Self-Locking Eyeglass System

Abstract

Self-locking eyeglass system, comprising at least one locking element and at least one frame element, wherein the frame element additionally comprises a connection element, which is intended for connecting with a locking element, and wherein the frame element is non-interrupted in its external circumference, and wherein the connection element is provided on the inner side, wherein the self-locking eyeglass system additionally comprises two hinge elements, which each comprises an adapter element, which matches a recess in the frame element, wherein each hinge element has a connection element, which coincides with the frame element's connection element, when the hinge elements are mounted in the at least one frame element's recess, and wherein each hinge element is secured to the at least one frame element by a locking element, whereby a convenient, flexible and uncomplicated way to assemble, separate, replace and service a self-locking eyeglass system is achieved.

Claims

1-12. (canceled)

13. A self-locking eyeglass system (1), comprising a frame element and an additionally frame element and also a nose bridge (9), where the nose bridge (9) connects the frame elements (2), which self-locking eyeglass system (1) further comprises one eyeglass lens (3) in each frame element (2), wherein each frame element (2) comprises a front side (4), a back side (5), an outer side (6) with an external circumference and an inner side (7) with an internal circumference, wherein each frame element (2) additionally comprises a connection element (11) of the frame element (2), which is intended for connection to the eyeglass lens (3), wherein each of the frame elements (2) is unbroken in its external circumference, and where the connection element (11) of the frame element (2) is provided on the inner side (7), wherein the nose bridge (9) has a connection element (13), which coincides with the frame element's connection element (11), when the nose bridge (9) is mounted in the frame elements (2), and wherein the nose bridge (9) is secured to the frame elements (2) by the eyeglass lens (3), wherein the nose bridge (9) comprises adapter elements (19) of the nose bridge (9), which are complementary to at least one first recess for the nose bridge (17) in each of the frame elements (2), wherein the adapter elements (19) of the nose bridge (9) are mounted in the first recess (17) for the nose bridge (9) and where the adapter elements (19) of the nose bridge (9) are locked onto each its own frame element (2) by the eyeglass lens (3), wherein the at least one first recess for the nose bridge (17), is provided from the inner side (7) in the direction towards the outer side (6).

14. The self-locking eyeglass system (1) according to claim 13, wherein the eyeglass lenses (3) constitute locking elements (3).

15. The self-locking eyeglass system (1) according to claim 13, wherein the adapter elements (19) of the nose bridge (9) have the connection element (13) of the nose bridge (9), which coincide with the connection element (11) of the frame element (2), when the adapter elements (19) of the nose bridge (9) are mounted in the first recesses (17) for the nose bridge (9), and wherein the adapter elements (19) of the nose bridge (9) are secured to their own frame element (2) by the eyeglass lens (3) and wherein each frame element (2) additionally comprises at least one second recess (15) for the nose bridge (9) extending on at least one of the frame element's front side (4) and back side (5), wherein each of the second recess (15) for the nose bridge (9) extends between the frame element's at least one first recess (17) for the nose bridge (9) and the frame element's outer side (6), wherein the second recess (15) for the nose bridge (9) is intended to accommodate the nose bridge (9).

16. The self-locking eyeglass system (1) according to claim 13, wherein the connection element (11) of the frame element (2) and the connection element (13) of the nose bridge (9) are intended for connection with the eyeglass lens (3).

17. The self-locking eyeglass system (1) according to claim 13, wherein each frame element (2) additionally comprises at least one further second recess (27) which extends on the at least one of the frame element's front side (4) and back side (5), wherein the at least one further second recess (27) extends between the frame element's at least one further first recess (28) and the frame element's outer side (6), wherein the at least one further second recess (27) is intended to accommodate a secondary eyeglass element (26).

18. The self-locking eyeglass system (1) according to claim 13, wherein the adapter elements of the nose bridge (19) comprise a longitudinal connection element (13), which when the adapter elements of the nose bridge (19) are mounted in the frame elements (2) is essentially located in the same plane as an edge of the inserted eyeglass lens (3), and wherein the longitudinal connection elements (13) are precisely intended to interact with the eyeglass lenses (3).

19. The self-locking eyeglass system (1) according to claim 13, wherein the adapter elements of the nose bridge (19) comprise another material on a side of the adapter elements (13) that is intended to face the eyeglass lens (3).

20. The self-locking eyeglass system (1) according to claim 13, wherein the adapter elements of the nose bridge (19) are thus adapted to the first recesses for the nose bridge (17) in the frame elements (2), in that the adapter elements of the nose bridge (19) have opposite pulling forces and pushing forces in relation to the frame elements (2).

21. The self-locking eyeglass system (1) according to claim 13, wherein the self-locking eyeglass system (1) additionally comprises at least one clasp with a respective clasp arm (21) and clasp cushion, where the clasp is placed on the nose bridge (9) or the frame elements (2).

22. The self-locking eyeglass system (1) according to claim 13, wherein the frame elements (2) are made from materials with elastic properties.

23. The self-locking eyeglass system (1) according to claim 13, wherein the self-locking eyeglass system (1) additionally comprises a spring element (29) between at least one of the connection elements (11) of the frame element (2) and the connection element (13) of the nose bridge (9) and the frame element (2).

24. The self-locking eyeglass system (1) according to claim 14, wherein the adapter elements (19) of the nose bridge (9) have the connection element (13) of the nose bridge (9), which coincide with the connection element (11) of the frame element (2), when the adapter elements (19) of the nose bridge (9) are mounted in the first recesses (17) for the nose bridge (9), and wherein the adapter elements (19) of the nose bridge (9) are secured to their own frame element (2) by the eyeglass lens (3) and wherein each frame element (2) additionally comprises at least one second recess (15) for the nose bridge (9) extending on at least one of the frame element's front side (4) and back side (5), wherein each of the second recess (15) for the nose bridge (9) extends between the frame element's at least one first recess (17) for the nose bridge (9) and the frame element's outer side (6), wherein the second recess (15) for the nose bridge (9) is intended to accommodate the nose bridge (9).

25. The self-locking eyeglass system (1) according to claim 14, wherein the connection element (11) of the frame element (2) and the connection element (13) of the nose bridge (9) are intended for connection with the eyeglass lens (3).

26. The self-locking eyeglass system (1) according to claim 14, wherein each frame element (2) additionally comprises at least one further second recess (27) which extends on the at least one of the frame element's front side (4) and back side (5), wherein the at least one further second recess (27) extends between the frame element's at least one further first recess (28) and the frame element's outer side (6), wherein the at least one further second recess (27) is intended to accommodate a secondary eyeglass element (26).

27. The self-locking eyeglass system (1) according to claim 14, wherein the adapter elements of the nose bridge (19) comprise a longitudinal connection element (13), which when the adapter elements of the nose bridge (19) are mounted in the frame elements (2) is essentially located in the same plane as an edge of the inserted eyeglass lens (3), and wherein the longitudinal connection elements (13) are precisely intended to interact with the eyeglass lenses (3).

28. The self-locking eyeglass system (1) according to claim 14, wherein the adapter elements of the nose bridge (19) comprise another material on a side of the adapter elements (13) that is intended to face the eyeglass lens (3).

29. The self-locking eyeglass system (1) according to claim 14, wherein the adapter elements of the nose bridge (19) are thus adapted to the first recesses for the nose bridge (17) in the frame elements (2), in that the adapter elements of the nose bridge (19) have opposite pulling forces and pushing forces in relation to the frame elements (2).

30. The self-locking eyeglass system (1) according to claim 14, wherein the self-locking eyeglass system (1) additionally comprises at least one clasp with a respective clasp arm (21) and clasp cushion, where the clasp is placed on the nose bridge (9) or the frame elements (2).

31. The self-locking eyeglass system (1) according to claim 14, wherein the frame elements (2) are made from materials with elastic properties.

32. The self-locking eyeglass system (1) according to claim 14, wherein the self-locking eyeglass system (1) additionally comprises a spring element (29) between at least one of the connection elements (11) of the frame element (2) and the connection element (13) of the nose bridge (9) and the frame element (2).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The invention will in the following be explained in more detail by description of non-limiting embodiments, with reference to the figures, where:

[0047] FIG. 1A-FIG. 1D show an eyeglass system with a frame element and an eyeglass lens,

[0048] FIG. 2A-FIG. 2D show an eyeglass system with et frame element and two locking elements,

[0049] FIG. 3A-FIG. 3D show an eyeglass system with two frame elements and two locking elements,

[0050] FIG. 4A and FIG. 4B show an eyeglass system with two frame elements and two locking elements, where the frame elements are prepared for a clasp,

[0051] FIG. 5 shows details of an assembly of an eyeglass system,

[0052] FIG. 6A and FIG. 6B show details of a frame element,

[0053] FIG. 7 shows variants of hinge elements and nose bridges,

[0054] FIG. 8 shows variants of nose bridges,

[0055] FIG. 9 shows variants of nose bridges with clasp,

[0056] FIG. 10A and FIG. 10B show details of hinge elements,

[0057] FIG. 11 shows a separate eyeglass system,

[0058] FIG. 12A and FIG. 12B show another separate eyeglass system,

[0059] FIG. 13A and FIG. 13B show the assembly of hinge elements with frame elements,

[0060] FIG. 14A and FIG. 14B show the attachment of a nose bridge to a frame element,

[0061] FIG. 15A and FIG. 15B show the attachment of a nose bridge to another frame element,

[0062] FIG. 16 shows a variant of a frame element,

[0063] FIG. 17A and FIG. 17B show a variant of an eyeglass system,

[0064] FIG. 18A and FIG. 18B show an additional variant of an eyeglass system,

[0065] FIG. 19A and FIG. 19B show yet another variant of an eyeglass system,

[0066] FIG. 20 shows a variant of an eyeglass system with a bar,

[0067] FIG. 21 shows a frame element with a bar,

[0068] FIG. 22 shows an additional variant of an eyeglass system with a bar,

[0069] FIG. 23 shows details of an embodiment of the connection between a frame element, a hinge element and an eyeglass lens,

[0070] FIG. 24 shows details of another embodiment of the connection between a frame element, a hinge element and an eyeglass lens.

[0071] In the description of the figures, identical or corresponding elements will be given the same reference number in the different figures. Thus, an explanation of all details in each figure/embodiment will not be given.

LIST WITH REFERENCE NUMBERS

[0072] 1 Eyeglass system [0073] 2 Frame element [0074] 3 Eyeglass lens [0075] 4 Front side, Frame element [0076] 5 Back side, Frame element [0077] 6 Outer side, Frame element [0078] 7 Inner side, Frame element [0079] 8 Hinge element [0080] 9 Nose bridge [0081] 11 Connection element, Frame element [0082] 12 Connection element, Hinge element [0083] 13 Connection element, Nose bridge [0084] 14 Second recess, Frame element for Hinge element [0085] 15 Second recess, Frame element for nose bridge [0086] 16 First recess, Frame element for Hinge element [0087] 17 First recess, Frame element for nose bridge [0088] 18 Adapter element, Hinge element [0089] 19 Adapter element, Nose bridge [0090] 20 Groove [0091] 21 Clasp arm [0092] 23 Recess, Frame element for locking device [0093] 24 Locking device [0094] 25 Arm, Hinge element [0095] 26 Rod/Secondary eyeglass element [0096] 27 Second recess, Frame element for rod [0097] 28 First recess, Frame element for rod [0098] 29 Spring element [0099] 30 Hole.

DETAILED DESCRIPTION OF THE INVENTION

[0100] A self-locking eyeglass system according to the invention is shown in the FIGS. 1-12.

[0101] FIG. 1 shows in FIG. 1A-1B a variant and in FIG. 1C-1D another variant of a self-locking eyeglass system 1 with a frame element 2 and an eyeglass lens 3, where the frame element 2 has s front side 4, a back side 5, an outer side 6 with an external circumference and an inner side 7 with an internal circumference, where the frame element 2 is unbroken in its external circumference, and where the self-locking eyeglass system 1 has two hinge elements 8. The Frame element 2 is, via the hinge elements 8 intended for connection with eyeglass bars, not shown.

[0102] FIG. 2 shows in FIG. 2A-2B a variant and in FIG. 2C-2D another variant of a self-locking eyeglass system 1 with a frame element 2 and two eyeglass lenses 3, where the frame element 2 has a front side 4, a back side 5, an outer side 6 with an external circumference and an inner side 7 with an internal circumference, where the frame element 2 is unbroken in its external circumference and where the self-locking eyeglass system 1 has two hinge elements 8. The frame element 2 is via the hinge elements 8 intended to connection with not shown temple bars.

[0103] FIG. 3 shows in FIG. 3A-3B a variant and in FIG. 3C-3D another variant of a self-locking eyeglass system 1 with two frame elements 2 and two eyeglass lenses 3, where the frame elements 2 have a front side 4, a back side 5, an outer side 6 with an external circumference and an inner side 7 with an internal circumference, where the frame elements 2 are unbroken in their external circumference, and where the self-locking eyeglass system 1 has two hinge elements 8 and a nose bridge 9, where the nose bridge 9 connects to the frame elements 2. The frame elements 2 are, via the hinge elements 8 intended for connection with temple bars, not shown.

[0104] FIG. 4 shows in FIG. 4A-4B yet another variant of a self-locking eyeglass system 1 with two frame elements 2, and two eyeglass lenses 3, where the frame elements 2 have a front side 4, a back side 5, an outer side 6 with an external circumference and an inner side 7 with an internal circumference, where the frame elements 2 are unbroken in their external circumference, and where the self-locking eyeglass system 1 has two hinge elements 8 and a nose bridge 9, where the nose bridge 9 connects the frame elements 2.

[0105] FIG. 5 shows the details for an assembly of an eyeglass system 1 with a frame element 2, wherein there is mounted a hinge element 8 and a nose bridge 9, which is locked to the frame element 2 by an eyeglass lens 3. The figure shows different cross-sections of the eyeglass system 1, A-A from which it can be seen, how a hinge element 8 and a nose bridge 9 are connected in relation to the frame element 2 and in relation to the eyeglass lens 3, B-B shows a cross-section at the hinge element 8, C-C and D-D show cross sections of other places in the frame element 2.

[0106] Cross section D-D additionally shows that the frame element 2 has connection elements 11, which are intended for connection with an eyeglass lens 3, and that the connection elements 11 are provided on the inner side 7 of the frame element 2.

[0107] Cross section A-A additionally shows that the hinge element 8 also has connection elements 12 and that the nose bridge 9 has connection elements 13, which also are intended for connection with an eyeglass lens 3.

[0108] FIG. 6 shows details of a frame element 2, where the frame element comprises a second recess 14 running on the back side 5 of the frame element, where the second recess 14 runs between the frame element's inner side 7 and the frame element's outer side 6, where the second recess 14 is intended to accommodate a hinge element 8.

[0109] In the same manner, FIG. 6 shows details of a frame element 2, where the frame element also comprises a second recess 15 that runs on the frame element's back side 5, where second the recess 15 runs between the frame elements inner side 7 and the frame element's outer side 6, where the second recess 15 is intended to accommodate a nose bridge 9.

[0110] In the same manner, FIG. 6 shows different cross sections of the frame element 2, A-A shows a cross section of the frame element 2 and the frame element's connection element 11, B-B shows a cross section of the frame element x 2, where the nose bridge 9 is placed.

[0111] FIG. 6B shows the frame element 2 seen from the outer side 6 where the hinge element 8 is placed.

[0112] Cross-section C-C shows a first recess 16 in the frame element 2, where the first recess 16 is provided from the inner side 7 in the direction towards the outer side 6. The first recess 16 is intended to accommodate a hinge element 8. Correspondingly, there is shown a first recess 17 in the frame element 2, where the first recess 17 is provided from the inner side 7 in the direction towards the outer side 6, where the first recess 17 is intended to accommodate a nose bridge 9.

[0113] FIG. 7 shows hinge elements 8 and nose bridge 9, where each hinge element 8 comprises an adapter element 18, which is complementary to a first recess 16 in a frame element 2, and where the nose bridge 9 comprises adapter elements 19, which are complementary to the first recesses 17 in the frame elements 2.

[0114] FIG. 8 shows a nose bridge 9, from which it can be seen that nose bridge 9 has adapter elements 19, where each adapter element 19 has a connection element 13, which is intended for connection with an eyeglass lens 3. The longitudinal connection element 13, which reaches the adapter element 19 is mounted in a frame element 2, is essentially lying in the same plane as the edge of a placed eyeglass lens 3, and where the connection element 13 is intended to interact with an eyeglass lens 3 via a groove 20.

[0115] The adapter elements 19 on the nose bridge 9 can also comprise another material on the side of the adapter elements 19, which are intended to face an eyeglass lens 3, meaning on the connection element 13.

[0116] FIG. 9 shows a nose bridge 9 with integrated clasp arm 21 (on the clasp arm 21 shall be mounted a clasp cushion not shown), from which it can be seen that the bridge 9 has adapter elements 19, where each adapter element 19 has a connection element 13, which is intended for connection with an eyeglass lens 3 via the groove 20.

[0117] FIG. 10 shows in FIG. 10A-10B details of the hinge elements 8, where adapter element 18 and connection element 12 are shown. The longitudinal connection element 12, which when the adapter element 18 is mounted in a frame element 2, is essentially lying in the same plane as the edge of a put in place eyeglass lens 3, and where the connection element 12 is intended to interact with an eyeglass lens 3.

[0118] In FIG. 10B a cross section A-A shows different variants of a hinge element's connection elements 12. The shown variants are also possible for frame element 2 and nose bridge 9, where all the connection elements can be made in the form of depressions (grooves) or protrusions (tongues) intended to receive an eyeglass lens 3, which is adapted to the form in question for connection element.

[0119] The adapter elements 18 on the hinge elements 8 can also comprise another material on the side of the adapter elements 18, which are intended to face an eyeglass lens 3, meaning on the connection element 12.

[0120] FIG. 11 shows a separated eyeglass system 1, from which can be seen that both the frame element's second recess 14 intended for hinge element 8 and the frame element's second recess 15 intended for the nose bridge 9 are place on the back side 5 of the frame element 2.

[0121] FIG. 12 shows yet another separated eyeglass system 1, from which it can be seen that the frame element's second recess 14 intended for hinge element 8 is placed on the front side 4 of the frame element 2, while the frame element's second recess 15 intended for the nose bridge 9 is placed on the back side 5 of the frame element 2.

[0122] The FIGS. 13 to 15 show how a hinge element 8 and a nose bridge 9 are put together with a frame element 2. The figures show in essence that the adapter elements 19 on the nose bridge 9 and the adapter elements 18 on the hinge elements 8 are so adapted to the first recesses in the frame elements 2, that both adapter elements 19 on the nose bridge 9 and the adapter elements 18 on the hinge elements 8 have opposite pull forces and push forces in relation to the frame elements 2.

[0123] FIG. 13 shows in FIG. 13A-13B the attachment of the hinge elements 8 to the frame elements 2, from which it can be seen that the hinge elements 8 are pulled in the direction from the frame elements' inner side 7 out towards the frame elements' outer side 6, where the hinge elements 8 also correspond with the second recess 14 in the frame element 2, where the second recess 14 runs between the frame element's first recess 16 to the hinge element 8 and the frame element's outer side 6. When a hinge element 8 is mounted in a frame element's first recess 16, the hinge element's connection element 12 shall coincide with the frame element's connection element 11, and each hinge element 8 can thus be fixed to a frame element 2 by an eyeglass lens 3.

[0124] FIG. 14 shows in FIG. 14A-14B the attachment of a nose bridge 9 to a frame element 2, from which it can be seen that the nose bridge 9 is pulled in the direction from the frame element's inner side 7 out towards the frame elements outer side 6, where the nose bridge 9 also corresponds to the second recess 15 in the frame element 2, where the second recess 15 runs between the frame element's first recess 17 and the nose bridge 9 and the frame element's outer side 6. When a nose bridge 9 is mounted in a frame element's first recess 17, the nose bridge's connection element 13 will coincide with the frame element's connection element 11, and the nose bridge 9 can then be fixed to a frame element 2 by an eyeglass lens 3. In FIG. 14 a hinge element 8 is already mounted.

[0125] FIG. 15 shows in FIG. 15A-15B the attachment of a nose bridge 9 to another frame element 2, where the attachment is performed in the same way as described in FIG. 14. In FIG. 15 a hinge element 8 is already mounted in each in its frame element 2, where the nose bridge 9 in FIG. 15A is mounted in one of the frame elements 2, and where it in FIG. 15B is mounted on the other frame element 2.

[0126] FIG. 16 shows a variant of a frame element 2, where a part of the frame element's connection element 11 in this variant partly consists of a first recess 23 in the frame element 2 and partly of a locking device 24. The cross-section A-A shows how the first recess 23 is larger in the cross section in the middle of the frame element 2.

[0127] FIG. 17 shows in FIG. 17A-17B a variant of an eyeglass system 1, where the frame element 2 has several first recesses 16 for use for a hinge element 8 and also has several second recesses 14 for use for a hinge element 8. Additionally, the frame element 2 has a first recess 17 for a nose bridge 9 and a second recess 15 for use for a nose bridge 9. The hinge element 8 as shown in FIG. 17B has two arms 25, where each arm 25 has an adapter element 18. Corresponding with the shown hinge element 8, a nose bridge 9 could also have more arms.

[0128] FIG. 18 shows in FIG. 18A-18B an additional variant of an eyeglass system 1, where the frame element 2 has a first recess 16 for use for a hinge element's adapter element 18 and has several second recesses 14 for use for the hinge element's arms 25. Additionally, the frame element 2 has a first recess 17 for a nose bridge 9 and a second recess 15 for use for a nose bridge 9. The hinge element 8 as shown in FIG. 18B has two arms 25, but only one adapter element 18.

[0129] FIG. 19 shows in FIG. 19A-19B yet an additional variant of an eyeglass system 1, where the frame element 2 has several first recesses 16 for use for a hinge element's adapter elements 18 and also has several second recesses 14 for use for the hinge element's arms 25. Additionally, the frame element 2 has a first recess 17 for a nose bridge 9. The hinge element 8 as shown in FIG. 19B has two arms 25, where each arm 25 has an adapter element 18.

[0130] The FIGS. 20 to 22 shows a variant of an eyeglass system 1 with a rod 26 (secondary eyeglass element), where each frame element 2 comprises at least one second recess 27 running on the frame element's front side 4 or back side 5, where the second recess 27 runs between the frame element's first recess 28 for the rod 26 and the frame element's outer side 6, where the second recess 27 is intended for receiving the rod 26.

[0131] FIG. 21 shows a frame element 2 for a rod 26, where the frame element's second recess 14 for the hinge element 8, the frame element's second recess 15 for the nose bridge 9 and the frame element's second recess 27 for the rod 26 are shown. All the second recesses are shown here on the frame element's back side 5.

[0132] FIG. 22 shows an additional variant of an eyeglass system 1 as noted in FIG. 20.

[0133] FIG. 23 shows details of the connection between a frame element 2, a hinge element 8 and an eyeglass lens 3 in the section A-A and details of the connection between a frame element 2 and an eyeglass lens 3 in the sections B-B, while the section C-C shows second recess 14 and first recess 16 in the frame element 2.

[0134] Section A-A shows details of the connection between a frame element 2, a hinge element 8 and an eyeglass lens 3, where the hinge element 8 via a second recess 14 and a first recess 16 is connected to the frame element 2, and where the hinge element's connection element 12 is connected to the eyeglass lens 3. Section A-A could in principle also be details of the connection between a frame element 2, a nose bridge 9 and an eyeglass lens 3.

[0135] The sections B-B show on top five different embodiments for connection elements 11 in the frame element 2 and below two additional different embodiments of the connection elements 11 in the frame element 2, where additionally a spring element 29 is provided. In the more highly placed of the two examples a spring element 29 is seen as being circular and for example made of rubber, and in the lower of the two examples a spring element 29 is seen as a spring.

[0136] Section C-C shows the second recess 14 and the first recess 16 in the frame element 2, provided for the hinge element's adapter element 18.

[0137] FIG. 24 shows details of the connection between a frame element 2, a hinge element 8 and an eyeglass lens 3 in section A-A and details of the connection between a frame element 2 and an eyeglass lens 3 in the sections B-B, while section C-C shows a hole 30 and first recess 16 in the frame element 2.

[0138] Section A-A shows details of the connection between a frame element 2, a hinge element 8 and an eyeglass lens 3, where the hinge element 8 via a hole 30 with rectangular cross section in the frame element 2 and a first recess 16 is connected to the frame element 2, and where the frame element's connection element 12 is connected to the locking 3.

[0139] The sections B-B show at the top five different embodiments of connection elements 11 in the frame element 2 and below two additional different embodiments of the connection element 11 in the frame element 2, where, in addition, a spring element 29 is provided. In the upper of the two examples a spring element 29 is seen as being circular and for example made of rubber, and in the lower of the two examples is seen a spring element 29 as a spring.

[0140] Section C-C shows the hole 30 and the first recess 16 in the frame element 2 provided to the hinge element's adapter element 18.

[0141] The invention is not limited to the above described embodiments that serve only the goal to make clear preferred embodiments of the invention.