Closure device for releasably connecting two parts

Abstract

A closure device for releasably connecting two parts. The closure device includes a first closure part and a second closure part, wherein for closing the closure device the first closure part is attachable to the second closure part and in a closed position is held at the second closure part, a first engaging protrusion of the first closure part and a second engaging protrusion of the second closure part, wherein for closing the first engaging protrusion can be brought in engagement with the second engaging protrusion in an engagement direction and in the closed position positively is in engagement with the second engaging protrusion, and a blocking element arranged at the second closure part. Between the first closure part and the second closure part a magnetic mechanism acts, which is formed to support the attachment of the first closure part to the second closure part by providing a force of magnetic attraction.

Claims

1. A closure device for releasably connecting two parts, comprising: a first closure part and a second closure part, wherein the first closure part is attachable to the second closure part for closing the closure device and, in a closed position, is mechanically fixed to the second closure part, a first engaging protrusion of the first closure part and a second engaging protrusion of the second closure part, wherein the first engaging protrusion is engageable with the second engaging protrusion in an engagement direction, a blocking element arranged on one of the first closure part and the second closure part, wherein the blocking element is spaced apart, when viewed along the engagement direction, from the engaging protrusion on the closure part on which the blocking element is arranged, wherein, on attachment of the first closure part to the second closure part, the blocking element is moved out of a normal position by cooperating with the other of the first closure part and the second closure part so that the first engaging protrusion is brought in engagement with the second engaging protrusion in the engagement direction, and, wherein the blocking element during or after establishment of the engagement, is reset into its normal position so that in the normal position the positive engagement of the first engaging protrusion with the second engaging protrusion is locked, and a magnetic mechanism formed to act between the first closure part and the second closure part in order to support the attachment of the first closure part to the second closure part by providing a force of magnetic attraction.

2. The closure device according to claim 1, wherein the first engaging protrusion and the second engaging protrusion are rigidly formed at a base body of the respectively associated closure part.

3. The closure device according to claim 1, wherein the engagement direction is directed along a load direction in which a load acts when the closure device is properly used.

4. The closure device according to claim 1, wherein the blocking element is realized by a blocking tongue arranged at a base body of the second closure part, which is formed to elastically back away from its normal position during attachment of the first closure part to the second closure part in a direction transverse to the engagement direction and again get back into its normal position during or after production of the engagement.

5. The closure device according to claim 1, wherein, in the closed position, the blocking element blockingly acts on a blocking nose arranged on the other of the first closure part and the second closure part and different from the engaging protrusion of the other of the first closure part and the second closure part.

6. The closure device according to claim 1, further comprising an actuating mechanism for opening the closure device, which is formed to act on the blocking element upon actuation, in order to eliminate the blockage of the engagement between the first engaging protrusion and the second engaging protrusion by moving the blocking element out of its normal position.

7. The closure device according to claim 1, further comprising an actuating mechanism for opening the closure device, the actuation mechanism being formed such that on actuation a blocking nose of the blocking element is moved in order to release the locking of the engagement between the first engaging protrusion and the second engaging protrusion.

8. The closure device according to claim 7, wherein the actuating mechanism includes a lever element pivotally arranged on a base body of the one of the first closure part and the second closure part about a pivot axis, the lever element comprising the blocking nose.

9. The closure device according to claim 8, wherein the lever element includes a lever portion which on pivoting the lever element for opening the closure device operatively interacts with the other of the first closure part and the second closure part such that a force on the first closure part relative to the second closure part opposite to the engagement direction is produced.

10. The closure device according to claim 1, wherein for opening the closure device the first closure part or a part of the first closure part is to be moved relative to the second closure part, in order to eliminate the blockage of the engagement between the first engaging protrusion and the second engaging protrusion and/or the positive engagement between the first engaging protrusion and the second engaging protrusion.

11. The closure device according to claim 10, wherein at the first closure part and/or at the second closure part a ramp is arranged, which is formed to separate the first closure part from the second closure part in a direction vertical to the engagement direction, when moving the first closure part or the part of the first closure part.

12. The closure device according to claim 1, wherein the blocking element is formed such that the locking of the engagement between the first engaging protrusion and the second engaging protrusion is released if a force larger than a threshold force is applied on the first closure part in a direction opposite the engagement direction.

13. The closure device according to claim 1, wherein at least one of the first closure part and the second closure part include a slope section formed such that, on attachment of the first closure part to the second closure part in a closing direction different from the engagement direction, the first engaging protrusion is guided relative to the second engaging protrusion to move the first closure part opposite to the engagement direction until the first engaging protrusion is engageable with the second engaging protrusion.

14. The closure device according to claim 1, wherein the magnetic mechanism is formed by a first magnet of the first closure part and a second magnet of the second closure part, which magnetically attract each other on attachment of the first closure part to the second closure part, wherein the first magnet and the second magnet are offset to each other in the closed position, when viewed along the engagement direction, such that in the closed position a component of the force of magnetic attraction acts on the first closure part in the engagement direction.

15. The closure device according to claim 1, wherein the first closure part comprises two first engaging portions extending at an angle with respect to each other, and the second closure part comprises two second engaging protrusions extending at an angle with respect to each other.

16. The closure device according to claim 1, wherein the first closure element or the second closure element are retractably arranged at a housing such that in a retracted position the closure part is at least partly enclosed by the housing and on attachment of the first closure part to the second closure part for producing the engagement is extended from its retracted position.

17. A belt buckle, comprising: a first closure part and a second closure part, wherein the first closure part is attachable to the second closure part for closing the belt buckle and, in a closed position, is mechanically fixed to the second closure part, a first engaging protrusion of the first closure part and a second engaging protrusion of the second closure part, wherein the first engaging protrusion is engageable with the second engaging protrusion in an engagement direction, and a blocking element arranged on one of the first closure part and the second closure part, wherein the blocking element is spaced apart, when viewed along the engagement direction, from the engaging protrusion on the closure part on which the blocking element is arranged, wherein, on attachment of the first closure part to the second closure part, the blocking element is moved out of a normal position by cooperating with the other of the first closure part and the second closure part so that the first engaging protrusion is brought in engagement with the second engaging protrusion in the engagement direction, and wherein the blocking element during or after establishment of the engagement is reset into its normal position so that in the normal position the positive engagement of the first engaging protrusion with the second engaging protrusion is locked, wherein at least one of the first closure part and the second closure part comprises a belt webbing receptacle for receiving a belt, wherein in a loaded condition load forces act in between the closure parts along a load direction such that the first closure part is loaded relative to the second closure part in the engagement direction.

18. A closure device for releasably connecting two parts, comprising: a first closure part and a second closure part, wherein the first closure part is attachable to the second closure part for closing the closure device and in a closed position is mechanically fixed to the second closure part, wherein the first closure part comprises two first engaging protrusions extending at an angle with respect to each other, and the second closure part comprises two second engaging protrusions extending at an angle with respect to each other, wherein the first engaging protrusions and the second engaging protrusions are moved into the closed position in a closing direction, wherein the first engaging protrusions are engageable with the second engaging protrusions in an engagement direction substantially perpendicular to the closing direction such that in the closed position the first engaging protrusions and the second engaging protrusions are in a positive locking engagement with each other, the positive locking engagement being operative to receive load forces acting on the first closure part with respect to the second closure part in the engagement direction, the closure device further comprising a magnetic mechanism formed to act between the first closure part and the second closure part in order to support the attachment of the first closure part to the second closure part by providing a force of magnetic attraction.

19. A closure device for releasably connecting two parts, comprising: a first closure part and a second closure part, wherein the first closure part is attachable to the second closure part for closing the closure device and, in a closed position, is mechanically fixed to the second closure part, a first engaging protrusion of the first closure part and a second engaging protrusion of the second closure part, wherein the first engaging protrusion is engageable with the second engaging protrusion in an engagement direction, a blocking element arranged on one of the first closure part and the second closure part, wherein, on attachment of the first closure part to the second closure part, the blocking element is moved out of a normal position by cooperating with the other of the first closure part and the second closure part so that the first engaging protrusion is brought in engagement with the second engaging protrusion in the engagement direction, and, wherein the blocking element during or after establishment of the engagement, is reset into its normal position so that in the normal position the positive engagement of the first engaging protrusion with the second engaging protrusion is locked, a magnetic mechanism formed to act between the first closure part and the second closure part in order to support the attachment of the first closure part to the second closure part by providing a force of magnetic attraction, and an actuating mechanism for opening the closure device, the actuation mechanism being formed such that on actuation a blocking nose of the blocking element is moved in order to release the locking of the engagement between the first engaging protrusion and the second engaging protrusion, wherein the actuating mechanism includes a lever element pivotally arranged on a base body of the one of the first closure part and the second closure part about a pivot axis, the lever element comprising the blocking nose.

20. A closure device for releasably connecting two parts, comprising: a first closure part and a second closure part, wherein the first closure part is attachable to the second closure part for closing the closure device and, in a closed position, is mechanically fixed to the second closure part, a first engaging protrusion of the first closure part and a second engaging protrusion of the second closure part, wherein the first engaging protrusion is engageable with the second engaging protrusion in an engagement direction, a blocking element arranged on one of the first closure part and the second closure part, wherein, on attachment of the first closure part to the second closure part, the blocking element is moved out of a normal position by cooperating with the other of the first closure part and the second closure part so that the first engaging protrusion is brought in engagement with the second engaging protrusion in the engagement direction, and, wherein the blocking element during or after establishment of the engagement, is reset into its normal position so that in the normal position the positive engagement of the first engaging protrusion with the second engaging protrusion is locked, and a magnetic mechanism formed to act between the first closure part and the second closure part in order to support the attachment of the first closure part to the second closure part by providing a force of magnetic attraction, wherein at least one of the first closure part and the second closure part include a slope section formed such that, on attachment of the first closure part to the second closure part in a closing direction different from the engagement direction, the first engaging protrusion is guided relative to the second engaging protrusion to move the first closure part opposite to the engagement direction until the first engaging protrusion is engageable with the second engaging protrusion.

21. A closure device for releasably connecting two parts, comprising: a first closure part and a second closure part, wherein the first closure part is attachable to the second closure part for closing the closure device and, in a closed position, is mechanically fixed to the second closure part, a first engaging protrusion of the first closure part and a second engaging protrusion of the second closure part, wherein the first engaging protrusion is engageable with the second engaging protrusion in an engagement direction, a blocking element arranged on one of the first closure part and the second closure part, wherein, on attachment of the first closure part to the second closure part, the blocking element is moved out of a normal position by cooperating with the other of the first closure part and the second closure part so that the first engaging protrusion is brought in engagement with the second engaging protrusion in the engagement direction, and, wherein the blocking element during or after establishment of the engagement, is reset into its normal position so that in the normal position the positive engagement of the first engaging protrusion with the second engaging protrusion is locked, and a magnetic mechanism formed to act between the first closure part and the second closure part in order to support the attachment of the first closure part to the second closure part by providing a force of magnetic attraction, wherein the magnetic mechanism is formed by a first magnet of the first closure part and a second magnet of the second closure part, which magnetically attract each other on attachment of the first closure part to the second closure part, wherein the first magnet and the second magnet are offset to each other in the closed position, when viewed along the engagement direction, such that in the closed position a component of the force of magnetic attraction acts on the first closure part in the engagement direction.

22. A closure device for releasably connecting two parts, comprising: a first closure part and a second closure part, wherein the first closure part is attachable to the second closure part for closing the closure device and, in a closed position, is mechanically fixed to the second closure part, a first engaging protrusion of the first closure part and a second engaging protrusion of the second closure part, wherein the first engaging protrusion is engageable with the second engaging protrusion in an engagement direction, a blocking element arranged on one of the first closure part and the second closure part, wherein, on attachment of the first closure part to the second closure part, the blocking element is moved out of a normal position by cooperating with the other of the first closure part and the second closure part so that the first engaging protrusion is brought in engagement with the second engaging protrusion in the engagement direction, and, wherein the blocking element during or after establishment of the engagement, is reset into its normal position so that in the normal position the positive engagement of the first engaging protrusion with the second engaging protrusion is locked, and a magnetic mechanism formed to act between the first closure part and the second closure part in order to support the attachment of the first closure part to the second closure part by providing a force of magnetic attraction, wherein the first closure part comprises two first engaging portions extending at an angle with respect to each other, and the second closure part comprises two second engaging protrusions extending at an angle with respect to each other.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The idea underlying the invention will be explained in detail below with reference to the exemplary embodiments illustrated in the Figures, in which:

(2) FIGS. 1A, 1B show different perspective views of a first exemplary embodiment of a closure device;

(3) FIGS. 2A, 2B show the perspective views of FIGS. 1A, 1B with attached actuating mechanism;

(4) FIGS. 3A-3G show top views of the closure device in different positions;

(5) FIGS. 4A-4G show sectional views along line C-C in the respectively associated FIG. 3A-3G;

(6) FIGS. 5A-5G show sectional views along line D-D in the respectively associated FIG. 3A-3G;

(7) FIGS. 6A, 6B show perspective exploded views of a second exemplary embodiment of a closure device;

(8) FIGS. 7A-7F show top views of the closure device in different positions;

(9) FIGS. 8A-8F show sectional views along line A-A according to the respectively associated FIG. 7A-7F;

(10) FIGS. 9A-9F show views of the closure device from below;

(11) FIGS. 10A, 10B show perspective exploded views of a third exemplary embodiment of a closure device;

(12) FIGS. 11A-11C show top views of the closure device in different positions;

(13) FIGS. 12A-12C show sectional views along line A-A in the respectively associated FIG. 11A-11C;

(14) FIGS. 13A, 13B show perspective exploded views of a further exemplary embodiment of a closure device;

(15) FIGS. 14A-14E show top views of the closure device in different positions;

(16) FIGS. 15A-15E show sectional views along line A-A in the respectively associated FIG. 14A-14E;

(17) FIGS. 16A-16D show top views of a further exemplary embodiment of a closure device;

(18) FIGS. 17A-17D show sectional views along line A-A in the respectively associated FIG. 16A-16D;

(19) FIG. 18A shows a perspective view of the closure device in an open position;

(20) FIG. 18B shows a separate view of a closure part of the closure device;

(21) FIGS. 19A-19F show perspective views of a further exemplary embodiment of a closure device in different positions;

(22) FIG. 20 shows a partly sectional view of a closure device with closure parts which each include engaging protrusions, wherein the engaging protrusions are arranged in a row;

(23) FIG. 21 shows a partly sectional, perspective view of an exemplary embodiment of a closure device in which the closure parts each include several engaging protrusions, wherein the engaging protrusions are arranged at the closure parts in the manner of a matrix;

(24) FIGS. 22A, 22B show perspective exploded views of a further exemplary embodiment of a closure device, in which one of the closure parts is retractable;

(25) FIGS. 23A-23E show top views of the closure device in different positions;

(26) FIGS. 24A-24E show sectional views along line D-D in the respectively associated FIG. 23A-23E;

(27) FIGS. 25A-25E show sectional views along line C-C in the respectively associated FIG. 23A-23E;

(28) FIGS. 26A-26B show exploded views of a further exemplary embodiment of a closure device with an actuating mechanism in the form of a lever element;

(29) FIGS. 27A-27D show top views of the closure devices in different positions; and

(30) FIGS. 28A-28D show sectional views along line B-B according to the respectively associated FIG. 27A-27D.

DESCRIPTION OF THE INVENTION

(31) A first exemplary embodiment of a closure device 1 is shown in FIGS. 1A and 1B as well as FIGS. 2A and 2B in different perspective views. The closure device 1 includes a first closure part 2 and a second closure part 3, which for closing of the closure device 1 can be attached to each other approximately in a closing direction X. In a closed position, engaging protrusions 220, 221 of the first closure part 2 mechanically are in engagement with engaging protrusions 320, 321 of the second closure part 3, so that by mechanism of the engaging protrusions 220, 221, 320, 321 the closure parts 2, 3 are held at each other.

(32) The first closure part 2 includes a base body 20 at which a belt webbing receptacle 21 is formed for fixing a belt. At the first closure part 2 an engaging mechanism 22 is formed, which substantially is formed by two engaging protrusions 220, 221 which each extend linearly and together form a V-shape. The engaging protrusions 220, 221 each are formed in the manner of undercuts.

(33) The second closure part 3 likewise includes a base body 30 at which a belt webbing receptacle 31 is mounted for fixing a belt. At the second base body 30 an engaging mechanism 32 is formed, which includes engaging protrusions 320, 321 which likewise are formed in the manner of undercuts and in the closed position are in engagement with the engaging protrusions 220, 221 of the first closure part 2.

(34) At the first closure part 2 two blocking noses 23, 24 are formed, which protrude from the latching protrusions 220, 221 and serve to cooperate with blocking elements 33, 34 of the second closure part 3 for blocking the closure device 1 in its closed position. The blocking elements 33, 34 are formed as elastic blocking tongues at the base body 30 of the second closure part 3 and extend in a tongue-like manner along an engagement direction Y (see e.g. FIGS. 1A, 1B and FIG. 5D) in which the first closure part 2 with its engaging protrusions 220, 221 is to be brought in engagement with the second closure part 3 with its engaging protrusions 320, 321.

(35) At the second closure part 3 an actuating mechanism 4 is provided in the form of an actuating slide which is shiftable on the base body 30 along the engagement direction Y and for this purpose encloses the base body 30 with a holding element 41 (see e.g. FIG. 2B). The actuating mechanism 4 in the form of the actuating slide includes actuating noses 42, 43 which serve to cooperate with the blocking elements 33, 34, in order to actuate the blocking elements 33, 34 for unblocking the closure device 1. For this purpose, the actuating noses 42, 43 can run up onto run-up slopes 330, 340 of the blocking elements 33, 34, as will yet be described below. At the actuating mechanism 4 in the form of the actuating slide further guide elements 44 are provided, by which the actuating mechanism 4 is guided on the base body 30 of the second closure part 3.

(36) The mode of operation of the closure device 1 will be explained below with reference to FIGS. 3A to 3G, 4A to 4G and 5A to 5G. FIGS. 3A to 3G show top views of the closure device 1, FIGS. 4A to 4G show sectional views along line C-C of FIGS. 3A to 3G, and FIGS. 5A to 5G show sectional views along line D-D of FIGS. 3A to 3G. In the Figures, the closure device is shown in different positions, wherein the Figures designated with A, B, C etc. each represent identical positions.

(37) In a starting position, shown in FIGS. 3A, 4A and 5A, the closure parts 2, 3 are present separate from each other. For closing the closure device, the first closure part 2 is attached to the second closure part 3 in a closing direction X, so as to mechanically bring the engaging protrusions 220, 221, 320, 321 and their closure parts 2, 3 in engagement with each other.

(38) For supporting the attachment and the production of the connection of the closure parts 2, 3 magnets 25 are arranged at the closure parts 2, 3, which, as can be taken from the sectional view of FIG. 4A, point towards each other with unlike poles, so that a force of magnetic attraction is effected between the closure parts 2, 3.

(39) When the closure parts 2, 3 are attached to each other in the closing direction X, the engaging protrusions 220, 221 of the first closure part 2 and the engaging protrusions 320, 321 of the second closure part 3 with run-up slopes 222, 322 at the engaging protrusions 220, 221, 320, 321 run up onto each other, so that the first closure part 2 is set back with respect to the second closure part 3 against the engagement direction Y, until the engaging protrusions 220, 221 of the first closure part 2 have moved past the engaging protrusions 320, 321 of the second closure part 3 and the first closure part 2 with its engaging protrusions 220, 221 can be brought in engagement with the engaging protrusions 320, 321 of the second closure part 3 in the engagement direction Y. This is shown in FIGS. 3B, 4B, 5B and 3C, 4C and 5C.

(40) When the engaging protrusions 220, 221, 320, 321 have been moved past each other, the first closure part 2 can be shifted relative to the second closure part 3 in the engagement direction Y, until the engaging protrusions 220, 221 of the first closure part 2 have come in engagement with the engaging protrusions 320, 321 of the second closure part 3, as is shown in FIGS. 3D, 4D and 5D. When attaching the first closure part 2 to the second closure part 3, the first closure part 2 with its blocking noses 23, 24 acts on the respectively associated blocking elements 33, 34, which as a result of the attachment are elastically deflected from their normal position and correspondingly back away in a direction transverse to the engagement direction Y, as can be taken from FIG. 5C. In the closed position, shown in FIG. 5D, the blocking noses 23, 24 have slid along the blocking elements 33, 34 and now engage in an opening 341 formed in engagement direction Y beyond the respectively associated blocking element 33, 34. By mechanism of the blocking elements 33, 34, which are formed rigid against the engagement direction Y, the engagement of the engaging protrusions 220, 221 of the first closure part 2 into the engaging protrusions 320, 321 of the second closure part 3 thus is blocked, so that the second closure part 2 cannot easily be moved relative to the second closure part 3 against the engagement direction Y and thus, the first closure part 2 cannot easily be released from the second closure part 3.

(41) When the closure device 1 is properly loaded in the closed position, forces act along a load direction F between the closure parts 2, 3 (see FIG. 5D), which can reliably and loadably be absorbed by the engagement of the engaging protrusions 220, 221, 320, 321. By mechanism of the blocking elements 33, 34, which cooperate with the blocking noses 23, 24, the closure device 1 additionally is secured against inadvertent opening.

(42) As can be taken from FIG. 4D, the magnets 25, 35 are arranged at the closure parts 2, 3 such that in the closed position they still have an offset to each other along the engagement direction Y. Thus, the magnet 35 of the second closure part 3, as seen along the engagement direction Y, is arranged behind the magnet 25 of the first closure part 2, so that also in the closed position there is still effected a force of magnetic attraction with a component in the engagement direction Y between the closure parts 2, 3, which leads to the fact that in the closed position the first closure part 2 is loaded relative to the second closure part 3 in the engagement direction Y and thus on the one hand the transfer of the first closure part 2 into the closed position and also the hold of the first closure part 2 at the second closure part 3 is magnetically supported.

(43) To open the closure device 1, the actuating mechanism 4 in the form of the actuating slide is actuated by shifting the actuating slide 4 relative to the base body 30 of the second closure part 3 in an actuation direction B parallel to the engagement direction Y, as is shown in FIGS. 3E, 4E and 5E. The actuating noses 42, 43 of the actuating slide 4 thereby run up onto the run-up slopes 330, 340 of the associated blocking elements 33, 34, so that the blocking elements 33, 34 are pushed aside transversely to the engagement direction Y, as is shown in FIG. 5E. The blocking noses 23, 24 thus are cleared, and the closure device 1 is unblocked, so that the closure parts 2, 3 can be released from each other, as is shown in FIGS. 3F, 4F, 5F and 3G, 4G, 5G.

(44) This design of the actuating mechanism is advantageous in particular because a user can perform the two operations necessary for opening (elimination of the blockage by the blocking piece and elimination of the engagement of the engaging protrusions) with one actuation.

(45) The closure parts 2, 3 for example can be designed in a simple form as injection-molded plastic parts. In this case, the magnets 25, 35 are attached to the closure parts 2, 3 as additional components, for example formed as neodymium magnets.

(46) The magnets 25, 35 in principle also can be omitted, in order to provide a purely mechanical closure device 1. In this case, the closure parts 2, 3 are to be attached to each other and engaged with each other manually.

(47) FIGS. 6A, 6B as well as FIGS. 7A to 7F, 8A-8F and 9A-9f show a further exemplary embodiment of a closure device 1. This closure device 1 includes a first closure part 2 and a second closure part 3 with one base body 20, 30 each, at which the engaging protrusions 220, 221, 320, 321 are formed. Each closure part 2, 3 carries a belt webbing receptacle 21, 31. At the second closure part 3 blocking elements 33, 34 are arranged.

(48) The mode of operation of the closure device is similar to the preceding exemplary embodiment, so that reference should be made to the above explanations. In contrast to the exemplary embodiment described above, however, this exemplary embodiment includes an actuating mechanism 4 with two actuating parts 40A, 40B, which are connected with each other via a spring element 45. The actuating mechanism 4 for example can be designed integrally as a plastic part. The actuating mechanism 4 is arranged in a receiving space 200 at the first closure part 2 and is held in the receiving space 200 via a housing cover 201. (For better clarity, the housing cover 201 is not shown in FIGS. 7A-7F, 8A-8F and 9A-9F). At each actuating part 40A, 40B a blocking nose 400A, 400B is arranged, which each extends through a gap 200A, 200B at the base body 20 of the first closure part 2.

(49) The mode of operation of the closure device 1 can be taken from FIGS. 7A-7F, 8A-8F and 9A-9F, in which the closure device 1 is shown in different positions.

(50) For closing, the closure parts 2, 3 are attached to each other in a closing direction X, wherein run-up slopes 222, 322 at the engaging protrusions 220, 221, 320, 321 run up onto each other andanalogous to the above descriptionmove the engaging protrusions 220, 221, 320, 321 past each other (see FIGS. 7A, 8A, 9A).

(51) The blocking noses 400A, 400B, which during attachmentdue to a pretension caused by the spring element 45, which pushes the actuating parts 40A, 40B away from each other, are located in an outer position in the respectively associated gap 200A, 200B, hit the blocking elements 33, 34 during attachment, so that the same are pushed out of their rest position (FIGS. 7B, 8B, 9B).

(52) When the engaging protrusions 220, 221 of the first closure part have passed the engaging protrusions 320, 321 of the second closure part 3 in the closing direction X, the engaging protrusions 220, 221 can be brought in engagement with the engaging protrusions 320, 321 of the second closure part 2 in the engagement direction Y (FIGS. 7C, 8C, 9C).

(53) In the closed position, the engaging protrusions 220, 221 of the first closure part 2 engage into the engaging protrusions 320, 321 of the second closure part 3, so that the first closure part 2 is mechanically held at the second closure part 3.

(54) When moving the second closure part in the engagement direction Y relative to the second closure part 3 for bringing the engaging protrusions 220, 221, 320, 321 in engagement, the blocking noses 400A, 400B also move along the respectively associated blocking elements 33, 34. In the closed position, the blocking noses 400A, 400B then lie in openings 331, 341 beyond the blocking elements 33, 34 (see FIG. 8C), so that the closure device 1 is blocked by mechanism of the blocking noses 400A, 400B and the blocking elements 33, 34 cooperating with the same and thus the engagement of the engaging protrusions 220, 221, 320, 321 with each other is secured.

(55) When the closure device 1 is to be opened, the actuating parts 40A, 40B of the actuating mechanism 4 are pushed towards each other in an actuating direction B (FIGS. 7D, 8D, 9D). The blocking noses 400A, 400B arranged at the actuating parts 40A, 40B thereby are moved out of the region of the blocking elements 33, 34 transversely to the engagement direction Y (FIG. 9D), so that the first closure part 2 with the engaging protrusions 220, 221 arranged thereon can be moved relative to the second closure part 3 against the engagement direction Y, without this movement being blocked by the blocking elements 33, 34.

(56) In that the blocking noses 400A, 400B in the associated gaps 200A, 200B are pushed further towards each other (in the actuating direction B, see FIGS. 7E, 8E, 9E), the blocking noses 400A, 400B act on the V-shaped engaging protrusions 320, 321 of the second closure part 2 in the actuating direction B and push the first closure part 2 away from the second closure part 3 against the engagement direction Y, so that releasing the closure parts 2, 3 from each other is supported mechanically.

(57) After unblocking the device and releasing the closure parts 2, 3 from each other, the first closure part 2 can be removed from the second closure part 3 (FIG. 7F, 8F, 9F).

(58) In the illustrated exemplary embodiment magnetic mechanism 25, 35 in turn are provided, which magnetically support the attachment of the closure parts 2, 3 to each other in the closing direction X. In this connection, reference is made to the observations on the first exemplary embodiment according to FIGS. 1-5.

(59) In the exemplary embodiment described with reference to FIGS. 6-9, the actuating mechanism 4 is formed with two separate, independently actuatable actuating parts 40A, 40B. For opening the closure device 1, the same must be moved towards each other along an actuating direction B transversely to the closing direction X and transversely to the engagement direction Y, so as to bring the blocking noses 400A, 400B out of their blocking position relative to the blocking elements 33, 34.

(60) In a further exemplary embodiment of a closure device 1, shown in FIGS. 10A, 10B as well as FIGS. 11A-11C and 12A-12C, a first closure part 2 includes a first engaging protrusion 220 and a second closure part 3 includes a second engaging protrusion 320. At a second closure part 3 there is also arranged a blocking element 33 in the form of a spring tongue, which is resiliently connected with a base body 30 of the second closure part 3.

(61) The mode of operation of the closure device 1 can be taken from FIGS. 11A-11C and 12A-12C, which show the closure device 1 in different positions.

(62) On closing (FIGS. 11A, 12A), the first closure part 2 is attached to the second closure part 3 in a closing direction X, wherein the engaging protrusions 220, 320 with run-up slope run up onto each other and thus the first closure part 2 is offset to the second closure part 3 against an engagement direction Y (vertical to the closing direction X). The first engaging protrusion 220 of the first closure part 2 also acts on the blocking element 33 of the second closure part 3, so that the blocking element 33 backs away approximately in the closing direction X and thus the engaging protrusion 220 of the first closure part 2 can be brought in engagement with the engaging protrusion 320 of the second closure part 3.

(63) At the first closure part 2 and the second closure part 3 magnets 25, 35 are arranged, which magnetically support the attachment of the closure parts 2, 3 to each other and for this purpose provide a force of magnetic attraction.

(64) In the closed position (FIGS. 11B, 12B), the engaging protrusion 220 of the first closure part 2 positively is in engagement with the engaging protrusion 320 of the second closure part 3, as is shown in FIG. 12B. In the closed position, the blocking element 33 takes its normal position in which the blocking element 33 extends along the engagement direction Y and blocks the first engaging protrusion 220 of the first closure part 2 against a movement against the engagement direction Y. In this case, the engaging protrusion 220 engages into an opening 331 on the part of the free end of the blocking element 33.

(65) For opening, the first closure part 2 can be shifted in an opening direction Z directed transversely to the closing direction X and transversely to the engagement direction Y into a cutout 332 of the second closure part 3, so that the engaging protrusion 220 of the first closure part 2 is removed from the region of the blocking element 33 and at the same time the engaging protrusion 220 is moved out of engagement with the engaging protrusion 320. The engaging protrusion 320 of the second closure part 3 slides in a groove-shaped cutout 224 of the first closure part 2 (FIG. 10A), so that the engaging protrusions 220, 320 mutually get out of engagement.

(66) Due to the opening movement of the first closure part 2 in the opening direction Z, the blockage by the blocking element 33 thus is eliminated on the one hand, in that the engaging protrusion 220 is removed from the region of the blocking element 33. On the other hand, the engagement between the engaging protrusions 220, 320 is eliminated, so that the first closure part 2 can be removed from the second closure par 3 not only against the opening direction Y, but also directly against the closing direction X.

(67) In principle, it is also conceivable that by shifting the second closure part 2 in the opening direction Z only the blockage or only the engagement of the engaging protrusions 220, 320 is eliminated. In the first case, the engaging protrusion 320 would extend along the entire width of the cutout 332. In the second case, the blocking element 33 would extend along the entire width of the cutout 332.

(68) The mode of operation of the closure device 1 otherwise is similar to the two exemplary embodiments described above, so that in addition reference will also be made to the above description.

(69) In a further exemplary embodiment shown in FIGS. 13A, 13B as well as FIGS. 14A-14E and FIGS. 15A-15E, a closure device 1 includes a first closure part 2 and a second closure part 3, which each include two engaging protrusions 220, 221, 320, 321 which each describe circular arc portions.

(70) The first closure part 2 includes a pin receptacle 26, into which a pin 36 of the second closure part 3 is inserted on closing the closure device 1. One of the engaging protrusions 220 of the first closure part 2 is arranged inside the pin receptacle 26, while the other one of the engaging protrusions 221 is located at an outer wall of the pin receptacle 26.

(71) The second closure part 3 includes a blocking element 33, which is formed as an elastic blocking tongue at a base body 30 of the second closure part 3.

(72) The mode of operation of the closure device 1 can be taken from FIGS. 14A-14E as well as FIGS. 15A-15E.

(73) For closing, the first closure part 2 is attached to the second closure part 3 in a closing direction X. The engaging protrusions 220, 221 with run-up slopes each run up onto the associated engaging protrusions 320, 321 of the second closure part 3, so that the first closure part 2 is offset relative to the second closure part 3 against the engagement direction Y (FIGS. 14A, 15A).

(74) During attachment, an engaging protrusion 220 of the two engaging protrusions 220, 221 of the first closure part 2 also gets in contact with the blocking element 33 and pushes the same out of is normal position in the closing direction X (FIGS. 14B, 15B), until the engaging protrusions 220, 221 get in engagement with each other in the engagement direction Y (FIGS. 14C, 15C and FIGS. 14D, 15D). In the closed position (FIGS. 14D, 15D), the engaging protrusions 220, 221, 320, 321 are positively in engagement with each other, wherein the engagement of the engaging protrusion 220 of the first closure part 2 as shown on the left in FIG. 15D is secured by the blocking element 33 against the engagement direction Y.

(75) As shown for example in FIG. 15C, the blocking element 33 is bent elastically and thereby pretensioned on attachment of the first closure part 2 to the second closure part 3. This pretensioning force with at least one force component thereby acts on the engagement protrusion 220 in the engagement direction Y, so that in the pretensioned condition the contact surfaces between the blocking element 33 and the engaging protrusion 220 no longer are parallel, but at an angle to each other, and the engagement of the engaging protrusions 220, 221 with the engaging protrusions 320, 321 in the engagement direction Y is mechanically supported by the blocking element 33 due to the spring pretension. This effect advantageously can even be enhanced in that slopes 333 are provided at the blocking element 33 and/or the engaging protrusion 220, with which the blocking element 33 and the engaging protrusion 220 rest against each other in the pretensioned condition and which convert at least a part of the pretension into a force component directed in the engagement direction Y, which supports the engagement.

(76) At the closure parts 2, 3 magnets 25, 35 in turn are arranged, which magnetically attract each other and magnetically support the attachment of the closure parts 2, 3. In this respect, reference is also made to the explanations of the preceding exemplary embodiments.

(77) At the first closure part 2, an actuating mechanism 4 is arranged in the form of an actuating element 4 elastically connected with a base body 20 of the first closure part 2 and formed integrally with the base body 20, which for opening the closure device 1 is depressed in an actuating direction B directed along the closing direction X, so that the actuating element 4 acts on the blocking element 33 and moves the same out of a blocking normal position (FIGS. 14E, 15E). The engaging protrusion 220 thus is cleared, so that the first closure part 2 can be moved relative to the second closure part 3 in a release direction Y opposite to the engagement direction Y, and in this way the engaging protrusions 220, 221, 320, 321 can be moved out of engagement with each other.

(78) This is advantageous in particular because a user can perform the two operations necessary for opening (elimination of the blockage by the blocking piece and elimination of the engagement of the engaging protrusions) with one actuation.

(79) In a further exemplary embodiment of a closure device 1 as shown in FIGS. 16A-16D as well as 17A-17D and 18A, 18B, two closure parts 2, 3 are formed identical in construction and each include two engaging protrusions 220, 221, 320, 321. Due to the fact that the closure parts 2, 3 are formed as identical parts, a particularly easy manufacture is obtained, because only one tool is required for manufacturing the closure parts for example by mechanism of plastics injection molding.

(80) The closure parts 2, 3 each include a blocking element 27, 33 which in a closed position of the closure device 1 blockingly cooperates with an associated engaging protrusion 320, 221 of the respectively other closure part 3, 2.

(81) The mode of operation of the closure device 1 can be taken from FIGS. 16A-16D and FIGS. 17A-17D.

(82) For closing, the first closure part 2 is attached to the second closure part 3 in the closing direction X, whereby the blocking elements 27, 33 are moved out of their normal position by cooperating with the engaging protrusion 320, 221 of the respectively other closure part 3, 2 (see FIGS. 17A and 17B). By pushing aside the blocking elements 27, 33, the engaging protrusions 220, 221, 320, 321 can be brought in engagement with each other, in that the first closure part 2 is moved relative to the second closure part 3 in the engagement direction Y, until in the closed position (FIGS. 16C, 17C) the engaging protrusions 220, 221, 320, 321 positively are in engagement with each other. When transferring the engaging protrusions 220, 221, 320, 321 in the closed position, the blocking elements 27, 33 again get back into their normal position in which they block a movement of the first closure part 2 relative to the second closure part 3 against the engagement direction Y, so that the engagement of the engaging protrusions 220, 221, 320, 321 is secured against the engagement direction Y.

(83) To open the closure device 1, the first closure part 2 can be rotated relative to the second closure part 3 in an actuating direction Z, whereby the engaging protrusions 220, 221 of the first closure part 2 are brought out of engagement with the engaging protrusions 320, 321 of the second closure part 3 in the opening direction Z (FIGS. 16D, 17D). At the same time, the engaging protrusions 220, 321 thus get out of the region of the blocking elements 27, 33, so that the blocking mechanism 27, 33 no longer block the closure device 1. In the now open position, the closure parts 2, 3 can be removed from each other.

(84) During opening by rotating the first closure part 2 relative to the second closure part 3 in the opening direction Z, ramps 280 run up onto each other on a platform 28 of the closure parts 2, 3 (see FIG. 18B, in which the first closure part 2 is shown in a separate view; the second closure part 3 is identical in construction). Due to the ramps 280 of the closure parts 2, 3 running up onto each other, the first closure part 2 is separated from the second closure part 3 against the closing direction X on opening of the closure device 1, which is advantageous, in order to at the same time on opening effect a weakening of the magnetic forces acting between the magnets 25, 35 of the closure parts 2, 3. For opening, the first closure part 2 is rotated relative to the second closure part 3 by about 90 (FIG. 16B). Opening is possible by rotating both in the opening direction Z and against the opening direction Z, so that the first closure part 2 can be rotated relative to the second closure part 3 in both directions.

(85) The magnets 25, 35 advantageously are designed as rectangular magnets. When approaching each other, the magnets 25, 35 thereby are aligned such that the closure parts 2, 3 preferably are oriented in the longitudinally aligned position as shown in FIGS. 16A-16C, FIGS. 17A-17C. During a rotation, a magnetic backdriving torque is obtained, which in particular in the case of an only slight, possibly inadvertent deflection again sets the closure parts 2, 3 back into their longitudinally aligned orientation corresponding to the closed position.

(86) In a further exemplary embodiment of a closure device 1 as shown in FIGS. 19A-19F, a first closure part 2 can be attached to a second closure part 3 in a closing direction X. During attachment (FIGS. 19A, 19B), engaging protrusions 220, 320 of the first closure part 2 and of the second closure part 3 run up onto each other, so that the engaging protrusions 220, 320 slide along each other along run-up slopes and the first closure part 2 is offset relative to the second closure part 3 against an engagement direction Y. A blocking element 33 of the second closure part 3 also is pushed aside in closing direction X (FIG. 19C), so that the engaging protrusion 220 of the first closure part 2 can be moved past the engaging protrusion 320 of the second closure part 3, until the engaging protrusions 220, 320 can be positively brought in engagement with each other in the engagement direction Y (FIG. 19D). In the closed position (FIG. 19D), the blocking element 33 again is in its normal position in which the blocking element 33 blockingly acts on the engaging protrusion 220 of the first closure part 2 and thus secures the engagement of the engaging protrusions 220, 320 with each other. For opening, the first closure part 2 can be pivoted in an opening direction Z together with an object 202 arranged thereon. The engaging protrusion 220 with a rounded portion 223 moves along an end face of the blocking element 33, so that the positive engagement between the engaging protrusion 220 and the engaging protrusion 320 against the closing direction X is eliminated and the first closure part can be removed from the second closure part 3 against the closing direction X (FIG. 19F).

(87) With the exemplary embodiment shown in FIGS. 19A-19F for example a pair of glasses (for example ski goggles) or a vizor or the like can be fixed at a helmet (for example a ski helmet).

(88) In the exemplary embodiment of a closure device 1 as shown in FIG. 20, two closure parts 2, 3 formed as identically constructed parts each include a plurality of engaging protrusions 220, 320, which are arranged in a row at the respectively associated closure part 2, 3. The engaging protrusions 220, 320 are brought in engagement with each other by attaching the closure parts 2, 3 in a closing direction, wherein in the closed position shown in FIG. 20 the hold of the engaging protrusions 220, 320 at each other is secured by two blocking elements 27, 33 of the closure parts 2, 3, so that the engagement of the engaging protrusions 220, 320 cannot easily be eliminated.

(89) For actuation, the blocking elements 27, 33 can be actuated by hand, in that they are bent out of their blocking engagement with the associated engaging protrusions 320, 220. After moving the blocking elements 27, 33 away, the engaging protrusions 220, 320 then can be moved towards each other against the engagement direction Y, so that the closure parts 2, 3 can be separated from each other.

(90) In the exemplary embodiment of FIG. 21, in a modification of the exemplary embodiment of FIG. 20, a plurality of engaging protrusions 220, 320 each are arranged at two closure parts 2, 3 in the manner of a two-dimensional matrix. At each closure part 2, 3 a blocking element 27, 33 in turn is arranged, so that in the closed position the engagement of the engaging protrusions 220, 320 with each other is blocked.

(91) In principle, the number of the engaging protrusions 220, 320 at a closure part 2, 3 need not correspond with the number of the blocking elements 27, 33. In principle, one blocking element 27, 33 at a closure part 2, 3 is sufficient, in order to blockingly secure the engagement of the engaging protrusions 220, 330, wherein for secure blocking it is also possible to provide a plurality of blocking elements 27, 33 either at the first closure part 2 or at the second closure part 3 or at both closure parts 2, 3.

(92) In the exemplary embodiment of a closure device 1 as shown in FIGS. 22A, 22B as well as FIGS. 23A-23E, 24A-24E and FIGS. 25A-25E two closure parts 2, 3 are provided, of which a second closure part 3 is retractably arranged at a housing 5.

(93) A first closure part 2 includes engaging protrusions 220, 221, which are formed similar to the exemplary embodiment of FIGS. 1 to 5. At the first closure part 2, an actuating mechanism 4 is arranged in the form of a push button which serves for opening the closure device 1. The push button 4 includes actuating parts 40A, 40B which extend through openings 203, 204 at a base body 20 of the first closure part 2 and serve for acting on blocking elements 33, 34 of the second closure part 3. The push button 4 includes an opening 401 which is in engagement with a magnet receptacle 250 of the first closure part 3. At the magnet receptacle 250 a magnet 25 of the first closure part 2 is retained.

(94) The second closure part 3 likewise includes engaging protrusions 320, 321. At the second closure part 3 blocking elements 33, 34 are arranged in addition. In so far, the second closure part 3 is similar to the second closure part 3 according to the exemplary embodiment of FIGS. 1 to 5.

(95) The second closure part 3 is arranged at a housing 5 and can be shifted in the housing 5 along the closing direction X in which the closure parts 2, 3 can be attached to each other. The housing 5 includes a base body 50 with an opening 500, at which a stop 501 is arranged for limiting the shifting path of the second closure part 3. At the base body 50 a bottom 51 is arranged, on which a magnet 52 is retained at a magnet receptacle 511 (the magnet 52 also can be formed as ferromagnetic armature).

(96) The mode of operation of the closure device 1 will be explained below with reference to FIGS. 23A-23E, 24A-24E and 25A-25E.

(97) In a starting condition before closing the closure device 1, the second closure part 3 is in a retracted position inside the housing 5 (FIG. 24A). After opening the closure device 1, the second closure part 3 is pulled into this retracted position, in that the magnet 52 at the bottom 51 of the housing 5 cooperates with the magnet 35 of the second closure part 3 in a magnetically attracting manner and thus produces a force of magnetic attraction on the second closure part 3 into the housing 5.

(98) When the closure device 1 is to be closed, the first closure part 2 is approached to the housing 5, so that the magnet 25 of the first closure part 2 also is approached to the magnet 35 of the second closure part 3. Due to the force of magnetic attraction between the magnets 25, 35, the second closure part 3 is extended from its retracted position in the housing 5 (FIG. 24B), so that the second closure part 3 gets into an extended position in which the first closure part 2 can be brought in engagement with the second closure part 3.

(99) The shifting path of the second closure part 3 in the housing 5 here is limited by the stop 501 at the housing 5 as well as a stop 37 at the second closure part 3. In the extended position, these stops 501, 37 are in contact with each other, so that the second closure part 3 is in a defined position at the housing 5. In this position, at least the engaging protrusion 320 of the second closure part 3 protrudes from the opening 500 of the housing 5.

(100) When attaching the first closure part 2 to the second closure part 3, the engaging protrusion 220 of the first closure part 2 is urged onto the blocking element 33 of the second closure part 3 (FIG. 25B), so that the blocking element 33 backs away in the closing direction X and the engaging protrusions 220, 221 of the first closure part 2 get in engagement with the engaging protrusions 320, 321 (FIGS. 23C, 24C, 25C).

(101) In the closed position (FIGS. 23C, 24C, 25C), the engaging protrusions 220, 221, 320, 321 then are in engagement with each other, wherein the engagement against the engaging direction Y is secured by the blocking elements 33, 34.

(102) For opening, the actuating knob 4 is actuated in an actuating direction B parallel to the closing direction X, so that actuating parts 40A, 40B act on the respectively associated blocking elements 33, 34 and push the same out of their normal position (FIG. 25D). The blockage of the engagement of the engaging protrusions 220, 221, 320, 321 thus is eliminated, so that the engaging protrusions 220, 221 can be brought out of engagement with the engaging protrusions 320, 321 of the second closure part 3 against the engagement direction Y (FIGS. 23E, 24E, 25E). Out of this condition, the closure parts 2, 3 can be released from each other, so that the closure device 1 is opened.

(103) In an exemplary embodiment of a closure device 1 as shown in FIGS. 26A and 26B in two perspective exploded views and in FIGS. 27A-27D and 28A-28D in different positions two closure parts 2, 3 are provided, which in principle are formed in the manner of the exemplary embodiment described for example with reference to FIG. 1 to FIG. 5 and each include two engaging protrusions 220, 221, 320, 321, which are arranged V-shaped to each other and in the closed position of the closure device 1 positively are in engagement with each other. In this respect, reference will also be made to the above description.

(104) In the exemplary embodiment shown in FIGS. 26 to 28, the first closure part 2 includes an actuating mechanism 4 which is formed by a lever element 46. Via two tabs, the lever element 46 is pivotally arranged at pins 205, 206 of the base body 20 of the first closure part 2 and pivotable relative to the base body 20 about a pivot axis S. At the lever element 4 two blocking noses 460A, 460B are arranged at a front end remote from the tabs 461A, 461B, which in the closed position of the closure device 1 are in engagement with blocking elements 33, 34 rigidly formed at the base body 30 of the second closure part 3 and in this way block the positive engagement between the closure parts 2, 3 in the closed position against the engagement direction Y.

(105) For attaching the first closure part 2 to the second closure part 3 for closing the closure device 1, the first closure part 2 is approached to the second closure part 3 in closing direction X, as shown in FIGS. 27A, 28A. By magnets 25, 35 at the closure parts 2, 3 (or a magnet at a closure part 2, 3 and a magnetic armature at the other closure part 3, 2) this closing operation is magnetically supported, in that the closure parts 2, 3 are magnetically attracted to each other.

(106) As shown in FIGS. 27B, 28B, run-up slopes 222, 322 at the engaging protrusions 220, 221, 320, 321 impinge on each other and run up onto each other such that the first closure part 2 is offset relative to the second closure part 3 against the engaging direction Y, so that the first closure part with its engaging protrusions 220, 221 can slide past the engaging protrusions 320, 321 and can get in engagement with the engaging protrusions 320, 321.

(107) In the closed position, shown in FIGS. 27C, 28C, the engaging protrusions 220, 221, 320, 321 of the closure parts 2, 3 positively are in engagement with each other, so that in particular loads which act between the closure parts 2, 3 in engagement direction Y can effectively be absorbed.

(108) At the base body of the first closure part 2 a web guide 207 is provided, which on attachment of the closure parts 2, 3 gets in engagement with a groove guide 300 at the base body 30 of the second closure part 3. The closure parts 2, 3 thereby are fixed to each other transversely to the closing direction X and transversely to the engagement direction Y, so that a displacement of the closure parts relative to each other only is possible along the engagement direction Y. The mechanical stability of the closure device 1 thereby is improved.

(109) When attaching the closure parts 2, 3 to each other, the blocking noses 460A, 460B at the lever element 46 of the actuating mechanism 4 also impinge on the rigid blocking elements 33, 34 of the second closure part 3. The lever element 46 initially slightly backs away and is pivoted, as is shown in FIG. 28B. In the closed position, the blocking noses 460A, 460B come to lie behind the blocking elements 33, 34 as seen in engagement direction Y, so that a displacement of the first closure part 2 against the engagement direction Y relative to the second closure part 3 is blocked, as is shown in FIG. 28C. In the closed position, the closure parts 2, 3 thus are positively held at each other in engagement direction Y and blocked relative to each other against the engagement direction Y.

(110) For opening, the lever element 46 is actuated and for this purpose pivoted in an opening direction Z, as is shown in FIGS. 27D, 28D. The blocking noses 460A, 460B at the lever element 46 thereby get out of the region of the blocking elements 33, 34 at the second closure part 3, so that the blockage between the closure parts 2, 3 is eliminated.

(111) In addition, on actuation of the lever element 46 an end 463 of a lever portion 462 of the lever element 46 remote from the blocking noses 460A, 460B gets in engagement with an opening 310 in the base body 30 of the second closure part 3. By acting on an edge portion of this opening 310, a lever force is produced on the first closure part 2 against the engagement direction Y, which on actuation of the lever element 46 pushes the second closure part 2 with its engaging protrusions 220, 221 out of engagement with the engaging protrusions 320, 321 of the second closure part 3, as is shown in FIG. 28D.

(112) The lever element thus on the one hand serves for blocking the closure parts 2, 3 relative to each other in the closed position and on the other hand for supporting the opening operation for separating the closure parts 2, 3 from each other.

(113) The lever element 46 for example can be manufactured as metal part, for example as sheet-metal part of a ferromagnetic material. This has the advantage that a magnet 25 at the first closure part 2 attractingly acts on the lever element 46 and brings the same into a starting position in which the closure parts 2, 3 can be attached to each other. In this starting position, the blocking noses 460A, 460B at the lever element 46 are in a position in which they blockingly get in contact with the blocking elements 33, 34, when the closure parts 2, 3 are attached to each other. Due to the magnetic effect on the lever element 46, the lever element 46 also is held in this position when the closure device 1 is in the closed position, so that the closure parts 2, 3 are blocked in their position (FIG. 28C).

(114) In addition, the lever element 46 for example also can be biased in direction of its starting position with respect to the base body 20 of the first closure part 2 via a mechanical spring element, so that after actuation the lever element 46 also is set back into its starting position due to the mechanical spring action.

(115) Such mechanical spring bias is expedient in particular when no magnetic mechanism are provided at the closure parts 2, 3 and the closure device 1 thus is designed purely mechanical or when a magnetic armature (only) is provided at the first closure part 2.

(116) Setting back the lever element 46 also can be effected by interaction of the lever portion 462 with the second closure part 3, in that on attachment of the closure parts 2, 3 the lever portion 462 gets in contact with the second closure part 3 and the lever element 46 thereby is set back into its starting position.

(117) The idea underlying the invention is not limited to the exemplary embodiments described above, but can also be realized in completely different embodiments.

(118) The application possibilities for a closure device as described here are manifold. In particular, closure devices as described here can be used for connecting two parts, for example for connecting two belts, straps, cables, cords or the like or also as closure for a bag, a cover, a box, a glove box, or some other container. Closures as described here can also be used for connecting other parts, for example for connecting objects at a backpack, a jacket or trousers, as closure for school satchels, for fixing objects at a sports helmet, for fixing mobile phones or computers at holders, for fixing accessories such as e.g. a bicycle lock at a bicycle or for connecting other parts.

LIST OF REFERENCE NUMERALS

(119) 1 closure device 2 closure part 20 base body 200 receiving space 200A, 200B gap 201 housing cover 202 object 203, 204 openings 205, 206 pin 207 guide web 21 belt webbing receptacle 22 engaging mechanism 220, 221 engaging protrusion 222 run-up slope 223 rounded portion 224 cutout 23, 24 blocking nose 25 magnet 250 magnet receptacle 26 pin receptacle 27 blocking element 28 platform 280 ramp 3 closure part 30 base body 300 guiding groove 31 belt webbing receptacle 310 opening 32 engaging mechanism 320, 321 engaging protrusion 322 run-up slope 33, 34 blocking element 330, 340 run-up slope 331, 341 opening 332 cutout 333 bevel 35 magnet 350 magnet receptacle 36 pin 37 stop 4 actuating mechanism 40 base body 40A, 40B actuating part 400A, 400B blocking nose 401 opening 41 retaining element 42, 43 actuating nose 420, 430 run-up slope 44 guide elements 45 spring element 46 lever 460A, 460B blocking engagement element (blocking nose) 461A, 461B tabs 462 lever portion 463 end 5 housing 50 base body 500 opening 501 stop 51 bottom 510 elevation 511 magnet receptacle 52 magnet B actuating direction F load direction S pivot axis X closing direction Y engagement direction Y release direction Z opening direction