Quick-unlocking gear and rack transmission lock body

Abstract

The utility model relates to the field of locks, and discloses a lock quick-opening gear and rack transmission lock body which comprises a transmission plate body, a main lock tongue, an inclined tongue body, an inclined tongue shifting piece, two inclined tongue connecting pieces, a transmission plate linkage piece and a lock bottom shell. Two linkage teeth are rotatably arranged at the bottom end, close to one side, in the lock bottom shell, a first double-lug tooth is rotatably arranged at the middle position, close to one side, in the lock bottom shell, a second double-lug tooth is rotatably arranged at the upper end position, close to one side, in the lock bottom shell, and a transmission tooth is fixedly arranged at the upper end of the second double-lug tooth; straight teeth are fixedly arranged at the lower end of the transmission plate body. According to the utility model, through the rotation of the two linkage teeth, the horizontal movement of the transmission plate, the downward movement of the main spring bolt, the downward movement of the latch bolt connecting piece at the bottom end of the latch bolt linkage shaft by the latch bolt shifting piece, and the downward movement of the latch bolt body along with the downward movement of the latch bolt linkage shaft can be realized, so that the purpose of quick unlocking is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lockset especially relates to a lock fast opening gear rack drive lock body. BACKGROUND

[0002] Lockset is a mechanical device widely used in the security field, mainly used for protecting various articles and spaces. It is usually composed of several basic components, including lock body, key, lock cylinder and door bolt, etc. Each part has its unique function, which together constitutes a complete security system. The lock body is the main part of the lockset, usually containing internal mechanical structure and electrical elements (in electronic lockset). It is responsible for bearing external force and pressure, making the entire lockset more solid and durable. The design of the lock body will directly affect the security level of the lockset.

[0003] The existing door lockset is usually composed of a lock body, a lock cylinder and a door bolt. When in use, the key is inserted into the lock hole to overcome the elastic force of the spring to make the latch pin in the correct position, and then the lock is opened and locked by rotating the key. The traditional mechanical lock can be opened by a lock picking tool to some extent, especially some simple designed locksets. After a long time of use, the spring inside the lock will wear out or fail, resulting in a decrease in the performance of the lockset, affecting the smoothness of opening and locking.

[0004] Therefore, the skilled person in the art provides a lock fast opening gear rack drive lock body to solve the problems raised in the background art. SUMMARY

[0005] The utility model discloses a lock fast opening gear rack drive lock body to solve the problems raised in the background art, and the new utility model can quickly achieve the purpose of opening the lock through gear and rack engagement.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A lock fast opening gear rack drive lock body, comprising a transmission plate body, a main lock tongue, a latch body, a latch tab, two latch connecting pieces, a transmission plate linkage piece, a lockset bottom shell, a handle pull, a latch linkage shaft, a limiting column and a limiting guide column, the lockset bottom shell is provided with a C-shaped tooth on one side of the inner end, two linkage teeth are rotatably arranged on the bottom end of the inner side of the lockset bottom shell, a first double-ear tooth is rotatably arranged at the middle position of the inner side of the lockset bottom shell, a second double-ear tooth is rotatably arranged at the upper end position of the inner side of the lockset bottom shell, and a transmission tooth is fixedly arranged on the upper end of the second double-ear tooth.

[0008] The straight-tooth is fixedly arranged at the lower end of the transmission plate body, the big force plate is fixedly arranged at the lower end of the main lock tongue, the vertical limiting slot is arranged at the lower end of the big force plate, the guide pin is fixedly arranged at one corner of the big force plate, the sliding slot is arranged at the inner end of the transmission plate linkage piece, the C-shaped rack transmission plate poking piece is rotatably arranged at the other side of the inner end of the transmission plate body through the pin, and the guide slot is arranged at the middle position of the transmission plate body.

[0009] Further, the C-shaped tooth is meshingly connected with one of the two linkage teeth, and the two linkage teeth are meshingly connected.

[0010] Further, the linkage tooth is meshingly connected with the large gear of the first double-ear tooth, and the small gear of the first double-ear tooth is meshingly connected with the transmission tooth.

[0011] Further, the second double-ear tooth is meshingly connected with the straight-tooth, and the guide pin is slidingly arranged in the inner end of the sliding slot.

[0012] Further, the handle pulling handle is composed of an upper pulling handle, a middle pulling handle and a lower pulling handle, the rack transmission plate poking piece is fixed with the middle pulling handle, and the two latch connecting pieces are connected with the upper pulling handle and the lower pulling handle respectively.

[0013] Further, the latch poking piece on the handle pulling handle is limited between the two latch connecting pieces at the bottom end of the latch linkage shaft, and the main lock tongue and the latch body are vertically moved through the upper part of the lock bottom shell through the big force plate and the latch linkage shaft respectively.

[0014] Further, the limiting column is movably arranged in the inner end of the vertical limiting slot, and the end of the limiting column is fixedly arranged in the horizontal guide slot at the upper end of the transmission plate linkage piece.

[0015] Further, the limiting guide column is movably arranged in the inner end of the guide slot.

[0016] The utility model has the advantages of the following:

[0017] The utility model provides a lock fast open gear rack drive lock body, sets up C type tooth and handle pull drag respectively on the lock cylinder installation site and handle installation site on the lock bottom shell, is engaged with first double ear tooth through two linkage tooth, is engaged with second double ear tooth through transmission tooth of first double ear tooth, reaches the pinion on second double ear tooth and transmission plate body bottom end straight tooth engagement, realizes the transmission of transmission plate body to horizontal direction, through the horizontal movement of transmission plate body, the guide peg on the big force plate of main lock bolt connection cooperates with the inclined guide sliding slot on transmission plate body, makes main lock bolt lower removal, when transmission plate body moves to right, linkage effect is produced to rack gear transmission plate paddle on transmission plate body rotation connection, rack gear transmission plate paddle produces rotation to the latch paddle connected on handle pull drag to make latch paddle lower removal to the latch linkage shaft bottom end latch connecting piece, the latch body removes along with the lower removal of latch linkage shaft, reaches the purpose that fast opens the lock. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the inside axonometric view of the utility model lock bottom shell;

[0019] Figure 2 It is the axonometric view of the utility model;

[0020] Figure 3 It is the inside overhead axonometric view of the utility model lock bottom shell;

[0021] Figure 4 It is the axonometric view of the utility model C type tooth and transmission tooth place;

[0022] Figure 5 It is the axonometric view of the utility model handle transmission plate body and hand pull drag.

[0023] Legend:

[0024] 1, transmission plate body; 2, big force plate; 3, main lock bolt; 4, latch body; 5, latch paddle; 6, latch connecting piece; 7, rack gear transmission plate paddle; 8, transmission plate linkage piece; 9, C type tooth; 10, linkage tooth; 11, lock bottom shell; 12, first double ear tooth; 13, transmission tooth; 14, second double ear tooth; 15, handle pull drag; 16, guide slot; 17, latch linkage axle; 18, straight tooth; 19, guide peg; 20, guide sliding slot; 21, vertical limit slot; 22, limit column; 23, limit guide column. DETAILED DESCRIPTION

[0025] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0026] With reference to Figures 1-5 An embodiment provided by the present application:

[0027] The lock fast opening gear rack transmission lock body comprises a transmission plate body 1, a main lock tongue 3, a latch body 4, a latch pushing piece 5, two latch connecting pieces 6, a transmission plate linkage piece 8, a lock bottom shell 11, a handle pulling drag 15, a latch linkage shaft 17, a limiting column 22 and a limiting guide column 23, the C-shaped tooth 9 is rotationally arranged on one side of the inner end of the lock bottom shell 11, two linkage teeth 10 are rotationally arranged on the bottom end of the inner side of the lock bottom shell 11, the first double-ear tooth 12 is rotationally arranged at the middle position of the inner side of the lock bottom shell 11, the second double-ear tooth 14 is rotationally arranged at the upper end position of the inner side of the lock bottom shell 11, the transmission tooth 13 is fixedly arranged on the upper end of the second double-ear tooth 14, the straight tooth 18 is fixedly arranged on the lower end of the transmission plate body 1, the big force plate 2 is fixedly arranged on the lower end of the main lock tongue 3, the vertical limiting groove 21 is arranged on the lower end of the big force plate 2, the guide nail 19 is fixedly arranged on one corner of the big force plate 2, the guide sliding groove 20 is arranged on the inner end of the transmission plate linkage piece 8, the rack transmission plate pushing piece 7 in the C-shaped form is rotationally arranged on the other side of the inner end of the transmission plate body 1 through a pin, the guide groove 16 is arranged at the middle position of the transmission plate body 1, the C-shaped tooth 9 is meshingly connected with one of the two linkage teeth 10, the two linkage teeth 10 are meshingly connected, the linkage tooth 10 is meshingly connected with the big gear of the first double-ear tooth 12, the small gear of the first double-ear tooth 12 is meshingly connected with the transmission tooth 13, the second double-ear tooth 14 is meshingly connected with the straight tooth 18, the guide nail 19 is slidingly arranged in the inner end of the guide sliding groove 20, the handle pulling drag 15 is composed of an upper pulling drag, a middle pulling drag and a lower pulling drag, and the rack transmission plate pushing piece 7 is fixed with the middle pulling drag, the two latch connecting pieces 6 are connected with the upper pulling drag and the lower pulling drag respectively, the latch pushing piece 5 on the handle pulling drag 15 is limitedly arranged between the two latch connecting pieces 6 at the bottom end of the latch linkage shaft 17, the main lock tongue 3 and the latch body 4 vertically move through the upper part of the lock bottom shell 11 through the big force plate 2 and the latch linkage shaft 17 respectively, the limiting column 22 is movably arranged in the inner end of the vertical limiting groove 21, the end of the limiting column 22 is fixedly arranged in the horizontal guide groove on the upper end of the transmission plate linkage piece 8, a second limiting column fixed with the lock bottom shell 11 is arranged in the inner end of the guide groove 16

[0028] Specifically, when the lock is opened by matching the lock core, the C-shaped tooth 9 is C-shaped and has a missing tooth position, so when the C-shaped tooth 9 is rotated and matched with the two linkage teeth 10, one of the two linkage teeth 10 will always be matched with the C-shaped tooth 9 to ensure uninterrupted transmission. The linkage tooth 10 is matched with the first double-eared tooth 12, the first double-eared tooth 12 is matched with the transmission tooth 13, and the second double-eared tooth 14 matched with the straight tooth 18 at the bottom end of the transmission plate body 1 is matched with the transmission tooth 13. When the C-shaped tooth 9 is rotated clockwise by the key, the second double-eared tooth 14 is driven by the linkage tooth 10 and the first double-eared tooth 12, the small gear on the second double-eared tooth 14 is matched with the straight tooth 18 at the bottom end of the transmission plate body 1, the transmission plate body 1 is horizontally moved to the right by the transmission force matched with the second double-eared tooth 14 through the straight tooth 18, and the transmission plate body 1 is horizontally moved to the right. Because the transmission plate body 1 is provided with an inclined guide sliding groove 20, when the transmission plate body 1 is horizontally transmitted to the right, the guide pin 19 on the big plate 2 connected with the main lock tongue 3 is matched with the inclined guide sliding groove 20 on the transmission plate body 1 through the horizontal movement of the transmission plate body 1, so that the main lock tongue 3 is lowered, and when the transmission plate body 1 moves to the right, the linkage effect is generated on the rack transmission plate tab 7 rotatably connected to the transmission plate body 1, the rack transmission plate tab 7 generates rotation on the latch tab 5 connected to the handle pull 15, so that the latch tab 5 lowers the latch connecting piece 6 at the bottom end of the latch linkage shaft 17, and the latch body 4 is lowered along with the downward movement of the latch linkage shaft 17, so that the purpose of fast unlocking is achieved. When the handle is quickly opened and closed: when the operator rotates the handle pull 15 clockwise through the handle, because the handle pull 15 is linked with the rack transmission plate tab 7 on the transmission plate body 1, the rack transmission plate tab 7 is linked with the latch tab 5, so that when the handle pull 15 rotates clockwise, the rack transmission plate tab 7 will move the transmission plate body 1 to the right, and the guide pin 19 on the big plate 2 will realize the downward movement of the main lock tongue 3 under the downward force of the guide sliding groove 20 on the transmission plate body 1, that is, the lock is opened. When the transmission plate body 1 moves to the right, it will link the transmission plate linkage piece 8, the transmission plate linkage piece 8 will drive the latch tab 5, and the latch tab 5 will drive the latch connecting piece 6 at the end of the latch linkage shaft 17. At this time, the latch body 4 is downwardly moved under the action force of the downwardly driven latch linkage shaft 17, so that the lock is opened. When the handle pull 15 rotates counterclockwise, the latch body 4 and the main lock tongue 3 will move upward to realize the locking, so that the main lock tongue 3 and the latch body 4 are matched to open and close the lock through gear linkage, the friction is reduced, the labor is saved compared with the previous lock transmission mechanism, the service life is improved, and the customer experience is better.

[0029] Working principle: when the lock is opened by matching the lock cylinder, the C-shaped tooth 9 is C-shaped and has a toothless position, so when the C-shaped tooth 9 is matched with the two linkage teeth 10, the two linkage teeth 10 will always be engaged with the C-shaped tooth 9, ensuring uninterrupted transmission. The linkage tooth 10 is engaged with the first double-eared tooth 12, the first double-eared tooth 12 is engaged with the transmission tooth 13, and the transmission tooth 13 is engaged with the second double-eared tooth 14 engaged with the straight tooth 18 at the bottom end of the transmission plate body 1. When the C-shaped tooth 9 is rotated clockwise by the key, the second double-eared tooth 14 is driven by the linkage tooth 10 and the first double-eared tooth 12, and the small gear on the second double-eared tooth 14 is engaged with the straight tooth 18 at the bottom end of the transmission plate body 1. The transmission plate body 1 moves horizontally to the right through the transmission force of the straight tooth 18 matched with the second double-eared tooth 14. Since the transmission plate body 1 is provided with an inclined guide sliding groove 20, the transmission plate body 1 is horizontally transmitted to the right, and the guide pin 19 on the main lock tongue 3 connected to the big plate 2 is matched with the inclined guide sliding groove 20 on the transmission plate body 1, so that the main lock tongue 3 moves down. When the transmission plate body 1 moves to the right, the linkage effect is generated on the rack transmission plate tab 7 rotatably connected to the transmission plate body 1, the rack transmission plate tab 7 rotates the latch tab 5 connected to the handle pull 15, thereby moving the latch tab 5 downward, and the latch body 4 moves downward with the latch linkage shaft 17, achieving the purpose of fast unlocking. When the handle is quickly opened and closed: when the operator rotates the handle pull 15 clockwise, the rack transmission plate tab 7 on the transmission plate body 1 is linked with the handle pull 15, and the rack transmission plate tab 7 is linked with the latch tab 5, so that the handle pull 15 rotates clockwise and moves the transmission plate body 1 to the right with the linkage of the rack transmission plate tab 7. The guide pin 19 on the big plate 2 moves downward under the action of the guide sliding groove 20 on the transmission plate body 1, thereby realizing the downward movement of the main lock tongue 3, i.e. unlocking. When the transmission plate body 1 moves to the right, it links with the transmission plate linkage piece 8, which drives the latch tab 5, and the latch tab 5 drives the latch connecting piece 6 at the end of the latch linkage shaft 17. At this time, the latch body 4 moves downward with the downward driving force of the latch linkage shaft 17, thereby achieving the purpose of unlocking.

[0030] Finally, it should be pointed out that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A quick-opening gear and rack transmission lock body, comprising a transmission plate body (1), a main latch (3), a latch body (4), a latch lever (5), two latch connecting pieces (6), a transmission plate linkage piece (8), a lock base shell (11), a handle puller (15), a latch linkage shaft (17), a limiting post (22), and a limiting guide post (23), characterized in that: The C-shaped tooth (9) is rotatably arranged on one side of the lock bottom shell (11), two linkage teeth (10) are rotatably arranged on the bottom end of the lock bottom shell (11), a first double-ear tooth (12) is rotatably arranged at the middle position of one side of the lock bottom shell (11), and a second double-ear tooth (14) is rotatably arranged at the upper end position of one side of the lock bottom shell (11). The straight tooth (18) is fixedly arranged at the lower end of the transmission plate body (1), the main lock tongue (3) is fixedly arranged at the lower end of the transmission plate body (1), the vertical limiting groove (21) is formed at the lower end of the transmission plate body (1), the guide pin (19) is fixedly arranged at one corner of the transmission plate body (1), the guide sliding groove (20) is formed at the inner end of the transmission plate linkage piece (8), the C-shaped rack transmission plate pulling piece (7) is rotatably arranged at the inner end of the transmission plate body (1) through a pin, and the guide groove (16) is formed at the middle position of the transmission plate body (1).

2. A lock body for a quick opening pinion rack drive according to claim 1, wherein: The C-shaped tooth (9) is rotatably arranged on one side of the lock bottom shell (11), two linkage teeth (10) are rotatably arranged on the bottom end of the lock bottom shell (11), a first double-ear tooth (12) is rotatably arranged at the middle position of one side of the lock bottom shell (11), and a second double-ear tooth (14) is rotatably arranged at the upper end position of one side of the lock bottom shell (11).

3. A lock body for a quick opening pinion rack drive as defined in claim 1, wherein: The linkage tooth (10) is rotatably arranged on one side of the lock bottom shell (11), two linkage teeth (10) are rotatably arranged on the bottom end of the lock bottom shell (11), a first double-ear tooth (12) is rotatably arranged at the middle position of one side of the lock bottom shell (11), and a second double-ear tooth (14) is rotatably arranged at the upper end position of one side of the lock bottom shell (11).

4. A lock body for a quick opening pinion rack drive according to claim 1, wherein: The second double-ear tooth (14) is rotatably arranged on one side of the lock bottom shell (11), two linkage teeth (10) are rotatably arranged on the bottom end of the lock bottom shell (11), a first double-ear tooth (12) is rotatably arranged at the middle position of one side of the lock bottom shell (11), and a second double-ear tooth (14) is rotatably arranged at the upper end position of one side of the lock bottom shell (11).

5. A lock body for a quick opening pinion rack drive as defined in claim 1, wherein: The handle pulling piece (15) is composed of an upper pulling piece, a middle pulling piece and a lower pulling piece, and the rack transmission plate pulling piece (7) is fixedly arranged on the middle pulling piece.

6. A lock body for a quick opening pinion rack drive according to claim 1, wherein: The handle pulling piece (15) is composed of an upper pulling piece, a middle pulling piece and a lower pulling piece, and the rack transmission plate pulling piece (7) is fixedly arranged on the middle pulling piece.

7. A lock body for a quick opening pinion rack drive as defined in claim 1 wherein: The handle pulling piece (15) is composed of an upper pulling piece, a middle pulling piece and a lower pulling piece, and the rack transmission plate pulling piece (7) is fixedly arranged on the middle pulling piece.

8. A lock body for a quick opening pinion rack drive according to claim 1, wherein: The handle pulling piece (15) is composed of an upper pulling piece, a middle pulling piece and a lower pulling piece, and the rack transmission plate pulling piece (7) is fixedly arranged on the middle pulling piece. The handle pulling piece (15) is composed of an upper pulling piece, a middle pulling piece and a lower pulling piece, and the rack transmission plate pulling piece (7) is fixedly arranged on the middle pulling piece. The handle pulling piece (15) is composed of an upper pulling piece, a middle pulling piece and a lower pulling piece, and the rack transmission plate pulling piece (7) is fixedly arranged on the middle pulling piece. The handle pulling piece (15) is composed of an upper pulling piece, a middle pulling piece and a lower pulling piece, and the rack transmission plate pulling piece (7) is fixedly arranged on the middle pulling piece. 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