screw cap

Abstract

The invention relates to a rotary lock (10, 110) for securing a door, wall or cover (12) to a frame or housing (14), comprising a rotary drive (18) for the rotary lock which can be mounted in a floating manner in an opening (16) arranged on the door, wall or cover (12), and a toothed rack (26).The rotary fastener (10, 110) is characterized in that the rack (26) has an elongated slot (36), one elongated side (38) of which forms the toothing (28) and the length of which is selected such that the rotary drive (18) rotates by 90 degrees or alternatively by 180 degrees, while a pinion (24) of the rotary drive (18) rolls from one slot end to the other slot end, that the rotary drive (18) forms a receptacle (42) for a tool or rotary socket wrench at its actuating end, and that the pinion (24) is arranged at a distance from the lower head side so that an annular groove (46) is formed, and that the slot (36) has a second elongated side (48) which has no toothing and which, in the central region of its longitudinal extent, forms an extension (50) which allows the drive to be inserted therethrough, while in the non-extended regions the two sides of the slot (36) are received by the annular groove (46).

Description

Background of the invention

[0001] The invention relates to a rotary lock for securing a door, wall or cover to a frame or housing, comprising a rotary drive for the rotary lock which is floatingly mounted in an opening arranged on the door, wall or cover and which can be received in a receiving part for the rotary lock which can be fastened to the frame or housing, wherein the rotary drive has a pinion which meshes with a toothing carried or formed by a rack in such a way that when the rotary drive is rotated, the rack executes a pushing movement in the direction of the rod extension, and that when the rack executes a pushing movement, the rotary drive is rotated by the rack. State of the art

[0002] Such a twist lock is essentially known from US 2007 / 0158951 A1.

[0003] Furthermore, WO 2004 / 101364 A2 discloses a housing with a positive internal locking mechanism, EP 0 568 680 B1 discloses a multi-point door locking mechanism with cam-slot elements, DE 197 42 512 A1 discloses a push rod lock for a cabinet door hinged to a switch cabinet body, DE 297 15 560 U1 discloses a pivot lever locking device, FR 2761717 A1 discloses a lock for a door, US6161881A discloses a window lock, DE 695 32 799 T2 discloses a lock for a container, DE 600 14 055 T2 discloses a bolt that can be closed by pressing, US 6,568,226 B1 discloses a rotary lock with a pulling unit and DE 20 33 041 A1 is a locking fitting for windows and doors. Object of the invention

[0004] The object of the invention is to further develop a screw cap of the type mentioned at the outset in such a way that it can be used more universally and, in particular, in the form of a kit. Solutions

[0005] The object of the invention is achieved with one embodiment in that the rack is made up of several parts and at least one bearing part and / or at least one rod part or coupling device is provided between the bearing part and the rod part.

[0006] The multi-part design of the rack allows for very flexible use, with the door, wall or lid as well as the frame or housing being of a design that can be provided with openings that can be arranged at the appropriate location. A floating arrangement of one of the components of the rotary lock that are to be locked together results in alignment, which is particularly important for sheet metal cabinets, as sheet metal cabinets can warp.

[0007] According to the invention, the rack has an elongated slot, one elongated side of which forms the toothing. The length of the slot is selected such that the rotary drive rotates 90 degrees or, alternatively, 180 degrees while the pinion rolls from one end of the slot to the other. This measure enables mutual alignment of the rack and pinion.

[0008] Furthermore, the rotary drive has a head with a receptacle for a tool or rotary socket wrench at its actuating end, and the pinion is arranged at a distance from the inner side of the head so that an annular groove is formed, which can also perform the alignment tasks.

[0009] This slot has a second elongated side which has no teeth, whereby the slot forms an extension in the middle area of ​​its longitudinal extent which allows the drive to be inserted through, while in the non-expanded area the two sides of the slot are received by the annular groove, which leads to an increase in the stability of the bearing of the rotary drive.

[0010] The rotary drive is guided particularly securely in its bearing when the teeth of the slot spring back, thus forming a smooth guide rail for mounting in the annular groove.

[0011] The twist lock is particularly effective when used with a spiral twist lock. However, it can also be used as a cross-bolt lock or a cam lock. Short description of the drawings

[0012] The invention is explained in more detail below with reference to embodiments shown in the drawings.

[0013] It shows: Fig. 1A shows a perspective view from the front of a rotary closure according to the invention in a double design as a multiple locking device; Fig. 1B the interlockable parts of the twist lock as a single lock in a perspective view from the front; Fig. 1C the double twist lock of the Fig. 1A, but perspective from behind; Fig. 1D a view similar to Fig. 1B, but seen from behind; Fig. 2A an exploded view of the arrangement according to Fig. 1A with rack in connection with a door; Fig. 2B an exploded view of the arrangement according to Fig. 1B without rack, in connection with a door; Fig. 3A to 3D in similar representations as Fig. 1A to 1D the arrangement shown there, but in connection with a door; Fig. 4, Fig. 5 and Fig. 6 perspective views of closures with spiral, cross pin or sash; Fig. 7A a similar view to Fig. 1A, but with an additional representation of the door leaf in the area of ​​one of the several rotary locks and a rotary lock receptacle according to Fig. 1B, Fig. 7B a similar view to Fig. 1C, but with an additional representation of the door leaf in the area of ​​one of the several rotary locks and a rotary lock receptacle according to Fig. 1D, Fig. 7C a similar view to Fig. 2A, but with a disc secured against rotation in the door leaf and a spiral compression spring for tolerance compensation, Fig. 7D a view like Fig. 7C, but with an O-ring for tolerance compensation, Fig. 7E a view like Fig. 7C, but with a spring washer for tolerance compensation, Fig. 7F a view similar to Fig. 1B, but with additional representation of the door leaf, Fig. 7G a view similar to the Fig. 1D, but with additional representation of the door leaf, Fig. 7H a view similar to the Fig. 2B, but with additional illustration of a disc spring, Fig. 8A an embodiment with simplified receptacle for the twist lock with end with cross pin, Fig. 8B an embodiment with a simplified receptacle for the screw cap with a spiral end, Fig. 9A, Fig. 9B and Fig. 9C in views similar to the Fig. 3C a spiral, a cross pin and a bolt closure, and Fig. 10A, Fig. 10B and Fig. 10C shows a simplified spiral rotary drive in three views. Best modes of carrying out the invention

[0014] Fig. 1A shows a perspective view from the front of a twist lock 10, here in the form of a spiral twist lock, for securing a door, wall or lid 12, see Fig. 3A, on a frame or housing 14, comprising an opening 16 arranged in the door, wall or cover 12, see Fig. 2A Floating rotary drive 18 of a rotary fastener 10, which can be received in a rotary fastener receiving part 20 that can be fastened to the frame or housing 14. The rotary fastener receiving part 20 can be fastened to the frame or housing, for example, by means of screws 22.

[0015] The rotary drive 18 has a pinion 24 that meshes with a toothing 28 carried or formed by a rack 26 such that, upon rotation of the rotary drive 18, the rack 26 performs a pushing movement in the direction of the rod extension, and such that the rotary drive 18 is rotated by the rack 26 by a pushing movement of the rack 26. As can be seen, the rack 26 is multi-part and consists of a bearing part 30 and optionally at least one rod part 32 and coupling devices 34 between the bearing part 30 and the rod part 32.

[0016] The coupling devices 34, which here consist of a pin 22 extending from the bearing part 30, onto which the rod part is plugged, make it possible to provide different distances between a first rotary lock 10 and, for example, a second rotary lock 110 and thus to realize a flexible adaptation to fastening points on the control cabinet at which, for example, the rotary lock receiving parts 20, 120 are arranged.

[0017] The rack 26 has an elongated slot 36, one elongated side 38 of which forms the toothing 28 and the length of which is selected such that the rotary drive 18 rotates by 90 degrees or alternatively by 180 degrees, while the pinion 24 rolls from one slot end to the other slot end.

[0018] The rotary drive 18 has at its actuating end a head with a receptacle 42 for a tool or rotary socket wrench, not shown, wherein the pinion 24 is arranged at a distance from the lower side 44 of the head 40 so that an annular groove 46 is formed.

[0019] The slot 36 has a second elongated side 48, which is smooth, i.e., has no teeth, and which forms an extension 50 in the central region of its longitudinal extent, allowing the shaft portion 52 of the rotary drive 18 to be inserted through, onto which the pinion 24 can be slid in a rotationally rigid manner and can be held in place with a locking washer 54. The two non-expanded portions of the two sides of the slot, in contrast, are accommodated by the annular groove and do not require the extension.

[0020] In order to achieve particularly good guidance on both sides of the slot, it is advantageous if the teeth of the slot 36 spring back.

[0021] To reduce the frictional forces, it is advantageous if the head 40 with its holder 42 runs into a recessed disc area 56.

[0022] The screw cap according to the invention is particularly advantageous when the screw cap is a spiral cap. The screw cap is Fig. 2B and is provided without a pinion. The spiral lock consists of an actuator with a spiral-shaped end 58. The head is mounted in a disc-shaped bearing with a recess, and the shaft passes through the opening 16 in the sheet metal 12. The actuator with the spiral 58 is held axially by a retaining ring 54. The receptacle 20 forms a spiral-shaped entry surface that receives the spiral 58 of the actuator, thereby attracting and centering the door 12 against the frame.

[0023] Spiral-shaped rotary fasteners designed for ¼ or ½ turn are known to be arranged individually, with the disadvantage that the fasteners must be operated individually. In contrast, the arrangement according to the invention has the advantage that it can be used not only as a single-point fastener, but also as a multi-point fastener with high compression capacity. This further development consists of at least one fastener and, if necessary, coupling elements of additional fasteners. As required, the rotary movement (closing process) is transmitted to additional locking points by the coupling rod 32, pinion 24, and rod drive 18.

[0024] The Fig. 2B shows an arrangement as a single-point closure, while the Fig. 2A shows a multi-point locking arrangement which is further extendable at the upper and lower ends.

[0025] Fig. 4 shows an enlarged view of the center of the Fig. 3 C with a representation of the closure according to the invention with a spiral, while Fig. 5 forms a shaft end with a cross pin, i.e. a cross pin closure 158, which engages behind an edge or contour not shown, which is formed or carried by a frame or the like, while Fig. 6. shows a shaft end with a sash 258, which is fixed to the shaft end by means of a locking screw and engages, for example, in the usual way behind a rear engagement surface of a frame (not shown here).

[0026] Fig. 7A is a similar perspective view from the front as Fig. 1A, but with an additional representation of the door leaf 12 in the area of ​​one, 10, of the several rotary locks 10, 110 and in each case an associated rotary lock receptacle 120 according to Fig. 1B or Fig. 20 according to Fig. 1A, while Fig. 7B a similar perspective view from behind as Fig. 1C, but with an additional representation of the door leaf 12 in the area of ​​one, 10, of the several rotary locks 10, 110 and in each case an associated rotary lock receptacle 120 according to Fig. 1D.

[0027] Fig. 7C shows in a similar view to Fig. 2A, an embodiment of a rotary lock with a disc 156 secured in the door leaf 112 by means of a projection 62 or recess 64 with respect to the door leaf 112 and a spiral compression spring 60 for axial tolerance compensation (damping) between disc 56 and head 40 of the associated rotary lock 110.

[0028] Fig. 7D is a view like Fig. 7C, but with an O-ring made of elastomer 160 for tolerance compensation, and Fig. 7E a view like Fig. 7C, but with a spring washer 260 (wave washer) to compensate for tolerances.

[0029] Fig. 7F is a view similar to the Fig. 1B, but with additional representation of the door leaf 12, and Fig. 7G a view similar to the Fig. 1D, but with additional representation of the door leaf 12, and Fig. 7H a view similar to the Fig. 2B, but with additional representation of a disc spring or spring washer or corrugated washer 260 for tolerance compensation between door leaf 12 and holder 120 or their fastening surface such as door frame, not shown.

[0030] In Fig. 8A is an embodiment with simplified receptacle 220 for the one-piece rotary lock, self-locking in the wall, with end with cross pin, and Fig. 8B an embodiment with simplified receptacle 320 for the twist lock with spiral end, Fig. 9A, Fig. 9B and Fig. 9C in views similar to the Fig. 3C a spiral, a cross pin and a bolt closure 110, 210 and 310 respectively, and Fig. 10A, Fig. 10B and Fig.10C shows in three views a simplified spiral rotary drive 410 with fastening or locking directly in the sheet metal or thin wall. Commercial exploitability of the invention

[0031] The invention can be commercially exploited in switch cabinet construction. List of reference symbols: 10, 110, 210, 310, 410 screw cap 12 Door, wall, lid 14 frames, housings 16 Breakthrough 18, 118 rotary drive 20, 120, 220, 320 screw cap holder 22 screws 24 pinions 26, 126 rack 28 teeth 30, 130 bearing part 32 rod part 34, 134 coupling devices 36 slot 38 slotted side 40 heads 42 recording 44 bottom page 46 ring groove 48 elongated page 50 Expansion 52 Shaft area of ​​the rotary drive 54 Retaining ring 56 recessed disc 58, 158, 258 spiral end, end with cross pin, end with quarter turn 60, 160, 260 spiral compression spring 62 lead 64 Return

Claims

A rotary lock (10, 110) for securing a door, wall, or cover (12) to a frame or housing (14), comprising a rotary drive (18) for the rotary lock, which can be mounted in a floating manner in an opening (16) arranged in the door, wall, or cover (12), and a toothed rack (26), wherein the rotary drive (18) can be received in a receiving part (20, 120) for the rotary lock (10, 110) fastened to the frame or housing (14), wherein the rotary drive (18) for the rotary lock (10, 110) has a pinion (24) which meshes with a toothing (28) carried or formed by the toothed rack (26) in such a way that upon rotation of the rotary drive (18), the toothed rack (26) executes a pushing movement, and that upon a pushing movement of the toothed rack (26), the rotary drive (18) is rotated by the toothed rack (26), wherein the rack (26) is multi-part and at least one bearing part (30, 130) and optionally at least one rod part (32) and coupling devices (34, 134) between the bearing part (30,130) and rod part (32), characterized in that the rack (26) has an elongated slot (36), one elongated side (38) of which forms the toothing (28) and the length of which is selected such that the rotary drive (18) rotates by 90 degrees or alternatively by 180 degrees, while the pinion (24) rolls from one end of the slot to the other end of the slot, that the rotary drive (18) forms a receptacle (42) for a tool or rotary socket wrench at its actuating end, and that the pinion (24) is arranged at a distance from the lower head side so that an annular groove (46) is formed, and that the slot (36) has a second elongated side (48) which has no toothing and which, in the central region of its longitudinal extent, forms an extension (50) which allows the drive to be inserted therethrough, while in the non-extended regions the two sides of the slot (36) be received by the annular groove (46). Twist lock according to claim 1, characterized in that the teeth (28) of the slot (36) spring back. Twist closure according to claim 1 or 2, characterized in that the closure is a spiral closure. Twist lock according to claim 1 or 2, characterized in that the lock is a transverse bolt lock which engages behind an edge or contour. Twist lock according to claim 1 or 2, characterized in that the lock is a cam lock which engages behind a locking surface. Twist lock according to one of claims 3 to 5, characterized in that the lock has an axial tolerance compensation device (damping) (60, 160, 260). Twist lock according to claim 6, characterized in that the tolerance compensation device (60, 160, 260) comprises a spiral spring (60), an O-ring (160), or a disc spring or spring washer or corrugated washer (260).

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