Closure device, preferably for closing a sealing flap of an opening

Abstract

A closure device having a lock element that can be locked on a mating piece, preferably for closing a sealing flap of an opening, in particular an inspection flap, preferably in a drywall construction, in particular for a wall or a ceiling is provided. A closure device is distinguished by the fact that the lock element is arranged in such a way that, preferably under the action of a spring, in a first position with respect to the mating piece it is or can be moved into a locking position and, in a second position, it reaches a position and/or a state without any blocking action.

Claims

1. A closure device comprising: a lock element that locks on a planar mating piece, wherein said lock element has a latching jaw and has an operative rotational range of motion of approximately 180 degrees; a holder having a pair of peripheral edges and a top edge and which moves relative to said mating piece comprising a shaft, such that said lock element is pivotably mounted on said shaft, the shaft positioned on an end of the lock element away from the latching jaw; a rotational spring secured to said holder and said lock element such that under the action of said rotational spring, said lock element rotates from a first position where said lock element is locked on said mating piece to a second position, where said lock element reaches a state without any blocking action; said rotational spring is mounted about said shaft and applies a rotational biasing force to said lock element in a direction transverse to the direction of motion of said holder, wherein said lock element rotates in a direction transverse to the direction of motion of said holder; said locking element being configured and dimensioned to be completely within said peripheral edges, and said top edge in a closing position in said first position as said holder moves transversely relative to the mating piece, and in said second position, said locking element is moved perpendicularly to said holder through action of said rotational spring as said holder moves further relative to said mating piece in a direction of travel.

2. The closure device according to claim 1, characterized in that the rotational spring is a leg spring, of which one leg acts on the lock element and the other leg is supported on an abutment.

3. The closure device according to claim 1, characterized in that said holder is formed substantially as a freely projecting finger.

4. The closure device according to claim 3, characterized in that the mating piece has a receptacle for the holder, wherein the receptacle is substantially an opening.

5. The closure device according to claim 1, characterized in that the mating piece is at least one of: substantially formed in the manner of a striker plate and substantially formed as a fitting of an opening edge or opening frame of an opening to be closed.

6. The closure device according to claim 1, characterized in that the lock element is part of a closure setup of a sealing flap of an opening to be closed.

7. The closure device according to claim 1, characterized in that the closure setup is a fitting or part of a fitting.

8. The closure device according to claim 1, characterized in that the latching jaw, in the first position, locks with the mating piece, wherein the latching jaw has a pawl region acting in the direction counter to the direction of action of the spring.

9. The closure device according to claim 8, characterized in that the latching jaw has the pawl region in the region of one of its jaw faces, specifically on that jaw face which, in the first position, faces or is closer to the second position, and that the latching jaw has on its other jaw face a run-off flank which, during the position-change movement of the lock element from the first to the second position, forces the lock element to pivot in the direction counter to the spring action and releases the latching jaw in a position-change movement in the direction of the second position.

10. The closure device according to claim 1, characterized in that the lock element has an entry guide path on its side facing away from the direction of the second position.

11. The closure device according to claim 1, characterized in that the lock element is at least one of: formed substantially in the manner of a cam disc and arranged in a gap in the holder, on a shaft at least partly bridging the gap.

12. The closure device according to claim 1, wherein the lock element closes a sealing flap of an opening, in particular an inspection flap, in a drywall construction, in particular for a wall or a ceiling.

13. A closure device, comprising: a locking element, with a latching jaw, that pivotally mounts on a shaft, said shaft positioned on an end of said lock element away from said latching jaw and locks on a mating piece, wherein said locking element has an operative rotational range of motion of approximately 180 degrees; a holder upon which said lock element is pivotably mounted, said holder defining a slot in which said locking element pivots and which completely encloses said locking element in a closing position when said holder is engaging the mating piece; and a rotational spring mounted on said shaft and including two ends, one of said ends secured to said holder and the other of said ends secured to said lock element such that said rotational spring biases said locking element toward an open position transverse to a direction of motion of said holder relative to the mating piece, wherein said biasing force is applied perpendicularly to the direction of motion of said holder, wherein said lock element rotates in a direction transverse to the direction of motion of said holder.

14. The closure device according to claim 13, characterized in that said lock element has a latching jaw which locks with said mating piece.

15. The closure device according to claim 14, characterized in that said latching jaw has a pawl region acting in the direction counter to the direction of action of said rotational spring.

16. The closure device according to claim 13, wherein said holder and said locking element are configured so that said locking element pivots between a first position where said locking element is enclosed within said slot and said locking element does not project from said holder, and a second position where said locking element is perpendicular to a longitudinal axis of said holder.

17. The closure device of claim 13, wherein the mating piece is planar, and defines an opening, said holder being dimensioned so that when said locking element is in said first position, said holder and said locking element pass through said opening.

18. A closure device, comprising: a locking element, with a latching jaw, that pivotally mounts on a shaft, said shaft positioned on an end of said lock element away from said latching jaw and locks on a planar mating piece; a holder upon which said lock element is pivotably mounted, said holder defining a slot in which said locking element pivots and which completely encloses said locking element in a closing position when said holder is engaging the mating piece; and a rotational spring mounted on said shaft and including two ends, one of said ends secured to said holder and the other of said ends secured to said lock element such that said rotational spring biases said locking element toward an open position transverse to a direction of motion of said holder relative to the mating piece, wherein said biasing force is applied perpendicularly to the direction of motion of said holder, wherein said lock element rotates in a direction transverse to the direction of motion of said holder, wherein the mating piece is planar, and defines an opening, said holder being dimensioned so that when said locking element is in said first position, said holder and said locking element pass through said opening.

19. The closure device according to claim 18, characterized in that said lock element has a latching jaw which locks with said mating piece.

20. The closure device according to claim 19, characterized in that said latching jaw has a pawl region acting in the direction counter to the direction of action of said rotational spring.

21. The closure device according to claim 18, wherein said holder and said locking element are configured so that said locking element pivots between a first position where said locking element is enclosed within said slot and said locking element does not project from said holder, and a second position where said locking element is perpendicular to a longitudinal axis of said holder.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Exemplary embodiments, from which further inventive features can also be gathered but which in principle are to be viewed merely as exemplary and which are not intended to restrict the subject matter of the invention or its protective scope, are illustrated in the drawing, in which,

(2) FIG. 1 shows a section through parts of a locking device according to the invention in a first position, namely in the open position,

(3) FIG. 2 shows the parts according to FIG. 1 in a second position, namely during closing,

(4) FIG. 3 shows the parts according to the preceding figures in a third position, namely in the locked position or closed position,

(5) FIG. 4 shows the parts according to the preceding figures in a fourth position,

(6) FIG. 5 shows the parts according to the preceding figures in a fifth position, namely during opening,

(7) FIG. 6 shows the parts according to the preceding figures in a sixth position, namely once more in the open position, which once more corresponds to the first position in FIG. 1,

(8) FIG. 7 shows a perspective view of a holder with an incorporated lock element of a closure device according to the invention according to the preceding figures,

(9) FIG. 8 shows an exploded illustration of the parts according to FIG. 7,

(10) FIG. 9 shows a further section through the parts of a closure device according to the invention according to FIGS. 1 to 6,

(11) FIG. 10 shows a further section through the parts of a closure device according to the invention according to FIG. 7, and

(12) FIG. 11 shows a perspective view of fittings with a closure device according to the invention.

DETAILED DESCRIPTION

(13) FIG. 1 shows, in section, a part of a striker plate 1 of a mating piece and a part of a closure setup 2 from an exemplary embodiment of a closure device according to the invention. The striker plate 1 has a receptacle 3 for the part of the closure setup 2 that is shown.

(14) Both the striker plate 1 and the closure setup 2 can each be parts of a fitting, and the fittings can in turn themselves be parts for an opening to be closed or for a sealing flap for such an opening.

(15) The closure setup 2 has a holder 4 formed substantially as a finger, which has a gap or slot 5, in which a lock element 6 is mounted such that it can pivot on a shaft 7. On the shaft 7, the lock element 6 is subject to the active force of a spring 8, which can be formed simply as a leg spring or else, for example, also as a spiral tension spring. Of the ends or legs 9, 10 of the spring 8, one is connected to the lock element 6 and the other is connected to the holder 4.

(16) The lock element 6 is formed substantially as a cam disc and, in particular, has a latching jaw 11 having a run-off flank 12 and an entry guide path 13. The functions of these aforementioned regions will be explained in more detail with the further figures.

(17) FIG. 1 shows the closure setup 2 in a first position, namely in the open position of the closure device. To close the closure device, the closure setup 2 is moved in the direction of the arrow 14 into a next position, which is illustrated in FIG. 2.

(18) FIG. 2 shows the parts according to FIG. 1 in a second position, although this is not yet the closed position. The same components are designated by the same reference numbers in FIG. 2, and also in the further figures, as in FIG. 1.

(19) In the illustration of FIG. 2, the free end of the closure setup 2 with the lock element 6 has been inserted a little further into the receptacle 3 of the striker plate 1. In this second position, as compared with the first position in FIG. 1, an outer side of a jaw face 15 of the latching jaw 11 has struck an edge of the receptacle 3 and, as a result of the movement of the closure setup 2 counter to the action of the spring 8, no matter whether this spring is a compression or tension spring, has been forced in the direction of the slot 5 into the slot 5. As a result, the free end of the closure setup 2 can be moved in a streamlined manner with the inactive lock element 6 further in the direction of the arrow 14 through the receptacle 3.

(20) In FIG. 3 the closed or locked position of the closure device according to the invention is now shown as a third position.

(21) In comparison with the second position in FIG. 2, the closure setup 2 has been pushed somewhat further into the receptacle 3 until the jaw face 15 comes behind the striker plate 1 and comes free of the edge of the receptacle, so that the lock element 6 was able to be pivoted out of the slot 5 somewhat under the action of the spring 8 but only until the latching jaw 11 engages around the edge of the receptacle 3 and locks with the latter, the run-off flank 12 now striking the edge of the receptacle 3 under the action of the spring 8 and, as a result, blocking further pivoting of the lock element 6.

(22) The locking achieved in this way is so stable that, even under the direct action of force counter to the direction of the arrow 14, the closure device cannot be opened. In particular, a sealing flap locked in this way on or in a room ceiling would not open even as a result of its weight. According to the invention, this is achieved inter alia by the formation of the inner side of the jaw face 15 as a pawl surface.

(23) In the claims and in this description, this third position is also designated as a first position of the lock element 6 with respect to the receptacle 3.

(24) FIG. 4 shows a fourth position of the parts according to FIG. 1. In this fourth position, the lock element 6 is shown in a state of a position also known as the second position with respect to the receptacle 3; it is also possible for this second position to be reached even closer to the receptacle 3 as soon as the lock element 6 has reached the state shown in FIG. 4, that is to say has come completely free out of the receptacle 3, to be specific, as seen from the first position or open position according to FIG. 1, behind the receptacle 3 and behind the closed or locked position shown in FIG. 3, the so-called first position.

(25) Although, in the locked position according to FIG. 3, the jaw faces of the latching jaw 11 block an automatic movement of the lock element 6 in both pivoting directions of the lock element 6, they cannot withstand a positive onward movement under the additional action of force in the direction of the arrow 14. The jaw face 15 is in any case not obstructive, since it blocks only in the direction counter to the arrow 14. However, the other jaw face cannot prevent such a movement either, since its inner side is formed as an oblique run-off flank 12 and therefore the force applied simply forces this run-off flank 12 out of the way counter to the action of the spring 8 with a force component.

(26) With a further forced movement in the direction of the arrow 14, the lock element 6 can therefore assume the position shown in FIG. 4.

(27) FIG. 5 shows a fifth position of the parts according to FIG. 1. In this position shown, the closure setup 2 has been moved back in the direction of the arrow 16 and in the direction of the open position according to FIG. 1. In the position shown, the lock element 6 is just passing again through the receptacle 3. It can be seen here that the position or the state of the lock element 6 in FIG. 4 already had no blocking action, since without a blockade, as now shown in FIG. 5, the lock element 6 can be rotated into a non-blocking position in which it is aligned with the holder 4 and can be led in an unimpeded manner through the receptacle 3. The entry guide flank 13 is helpful for the corresponding pivoting of the lock element 6 and its entry into the receptacle 3.

(28) FIG. 6 shows once more the open position according to FIG. 1 and the completion of the closing/opening cycle of the closure device according to the invention.

(29) FIG. 7 shows a perspective view of the part of the closure setup 2 according to the invention according to the preceding figures.

(30) In FIG. 7, it can be seen particularly well how the lock element 6 is pivotably mounted on the shaft 7 in the slot 5 or gap of the holder 4. In addition, the finger shape of the holder 4 can clearly be seen. The lock element 6 can be recognized as a cam disc.

(31) In FIG. 8, the parts of the closure setup 2 according to FIG. 7 are shown once more in an exploded illustration. Further details can be seen better from this illustration. The spring 8 is not shown as a leg spring here but as a strip-like spiral spring that can be loaded in tension and can be led around the shaft 7.

(32) Additionally shown in FIG. 8 is a shaft bush section 17 for the shaft 7, moulded on the lock element 6.

(33) FIG. 9 shows a different section through the closure setup 2 than FIGS. 1 to 6. While FIGS. 1 to 6 show the section plane designated by A-A in FIG. 9, FIG. 9 shows a longitudinal sectional plane substantially perpendicular thereto.

(34) FIG. 10 shows a further, different section through the closure setup 2 according to the invention.

(35) If FIG. 9 shows a longitudinal section in the section plane designated by C-C in FIG. 10, FIG. 10 shows a cross section in the section plane designated by B-B in FIG. 9.

(36) FIG. 11 shows once more, by way of example, in a perspective view, fittings for an inspection opening with inspection flap with a closure device according to the invention. The inspection opening and the inspection flap to close the same are themselves not illustrated. In FIG. 11, only a few reference numbers have been used for orientation, for the sake of clarity.

(37) The fittings illustrated are corner fittings, preferably metal fittings, with which a frame or an edge of an inspection opening and a frame or edge of an inspection flap can also advantageously be reinforced. At the same time, these fittings can be fixed quickly and simply, for example with a few screws.

(38) The outer fitting 18 has been mounted on the inspection opening; the inner fitting 19 has been mounted on the inspection flap.

(39) Here, the inner fitting 19 bears the closure setup 2 with the lock element 6, and the outer fitting 18 bears the striker plate 1 with the receptacle 3.

(40) Closure devices according to the invention can also be configured differently, more simply or else in a more complicated manner. For example, thought could be given to introducing a hole directly into an outer frame of the inspection opening as a receptacle 3 for the closure setup 2, if profiles of an outer frame of the inspection opening and of an outer frame of the inspection flap overlap, or the closure setup 2 with the lock element 6 could be fitted to a flat holder 4 on an outer frame of the inspection opening, the holder 4 projecting in parallel behind the inspection opening as a lug and thus also being able to form a stop for the inspection flap in its closed position. Such a holder 4 could possibly be fitted to the left and right of the outer frame. The receptacle(s) 3 for this purpose could then be provided simply on an edge or frame of the inspection flap.

(41) Also indicated by way of example in FIG. 11 is an ejection spring 20, which ensures that when the closure device is unlocked, the inspection flap springs open slightly under spring pressure and can more easily be gripped and opened completely.