A clutch assembly for a lock body

Abstract

A clutch assembly for a lock body, relating to the field of electronic lock technology, includes a clutch body, an upper shift plate, and a lower shift plate. The clutch body is a stepped shaft shape with a square hole at its center. Upper and lower bosses are correspondingly provided on the upper and lower stepped surfaces of the expanded diameter section in the middle of the clutch body, with two of each type, symmetrically arranged along the circumference of the expanded diameter section. Upper shift forks A and B are spaced apart on the circumference of the upper half of the expanded diameter section, and a lower shift fork extends along the circumference of the lower half of the expanded diameter section. The upper shift plate is fitted onto the upper stepped surface of the clutch body through a central through-hole A, and the lower shift plate is fitted onto the lower stepped surface of the clutch body through a central through-hole B. This invention achieves smooth locking and unlocking by linking the clutch body, upper shift plate, and lower shift plate with other components on the lock body.

Description

Technical Field

[0001] This utility model relates to the field of electronic lock technology, and in particular to a clutch assembly for a lock body. Background Technology

[0002] As is well known, the clutch is a crucial component for locking smart locks; however, existing clutches in smart locks still have the following problems in use:

[0003] (1) Traditional clutches have complex structures, usually consisting of a clutch core, sector gears or gear structures. When in use, the transmission teeth on the lever mesh with the transmission teeth on the clutch without gap or with small gap, which is more troublesome to manufacture. (2) The clutch only works by linking the lever with the large slide plate to achieve the opening and closing action. This structure has low anti-theft performance and a relatively simple function. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, this utility model discloses a clutch assembly for a lock body.

[0005] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0006] A clutch assembly for a lock body includes a clutch body, an upper shift plate, and a lower shift plate. The clutch body is a stepped shaft shape with a square hole at its center. An upper boss and a lower boss are provided on the upper and lower stepped surfaces of the expanded diameter section in the middle of the clutch body, with two of each. They are symmetrically arranged along the circumference of the expanded diameter section. An upper shift fork A and an upper shift fork B are spaced apart on the circumference of the upper half of the expanded diameter section, and a lower shift fork extends along the circumference of the lower half of the expanded diameter section. The upper shift plate is fitted onto the upper stepped surface of the clutch body through a central through-hole A, and the lower shift plate is fitted onto the lower stepped surface of the clutch body through a central through-hole B.

[0007] The clutch assembly for the lock body includes an upper fixed plate and a lower fixed plate that are fixedly connected by screws. Through holes A are respectively opened in the middle of the upper fixed plate and the lower fixed plate, and have the same structure. The through hole A includes a circular hole in the middle and an arc-shaped hole A extending along the outer edge of the circular hole. Two upper bosses on the upper step surface are respectively rotatably arranged in the arc-shaped hole A.

[0008] The clutch assembly for the lock body has three screw holes evenly spaced along the circumferential surfaces of the upper and lower fixed plates, which are fixedly connected by screws. An upper lever is located between two screw holes and extends outward on the outer circumferential surface of the lower fixed plate. An inverted "V" shaped contact extends outward along one side of the outer circumferential surface of the third screw hole.

[0009] The clutch assembly for the lock body has a lower lever extending outward along the outer circular surface of the lower lever plate. The through hole B includes a central circular hole and an arc-shaped hole B extending correspondingly along the outer edge of the circular hole. Two lower bosses on the lower step surface are respectively rotatably disposed in the arc-shaped hole B.

[0010] The clutch assembly for the lock body has an upper shift fork A with one side being an inclined plane and the other side having an inwardly concave surface, forming a convex surface A at the concave surface and the outer circular surface of the upper shift fork A.

[0011] The clutch assembly for the lock body has an upper shift fork B with one side being a concave arc-shaped surface and the other side being a convex arc-shaped surface B.

[0012] Due to the adoption of the above technical solution, this utility model has the following beneficial effects:

[0013] The clutch assembly for a lock body described in this utility model features an upper and lower paddle plate on the upper and lower parts of the clutch body, respectively. The clutch body is linked to the differential drive assembly and the rear boss of the lever of the lock body. The upper lever of the upper paddle plate and the lower lever of the lower paddle plate are linked to the sliding bracket of the tongue. The inverted "V"-shaped contact of the upper paddle plate meshes with the upper half gear of the differential drive assembly. When opening or closing the lock, the indoor handle in the square hole is raised or lowered, driving the clutch body to rotate. Since the upper and lower bosses of the clutch body are respectively located in arc-shaped holes A and B, the upper and lower paddle plates are driven to rotate. This utility model, through the linkage of the clutch body, upper and lower paddle plates, and other components on the lock body, enables smooth locking and unlocking, provides good anti-theft performance, has fewer structural parts, is easy and quick to install and disassemble, and has strong linkage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the clutch body of this utility model.

[0016] Figure 3 This is a schematic diagram of the clutch body of this utility model from another direction.

[0017] Figure 4 This is a schematic diagram of the structure of the lower lever of this utility model.

[0018] Figure 5 This is a schematic diagram of the structure of the upper lever of this utility model.

[0019] Figure 6 This is a schematic diagram of the structure of this utility model in conjunction with the tie rod and differential drive assembly.

[0020] In the diagram: 1. Lower shifter; 2. Clutch body; 3. Upper shifter; 4. Square hole; 5. Convex surface A; 6. Upper shift fork A; 7. Lower boss; 8. Lower shift fork; 9. Upper shift fork B; 10. Convex surface B; 11. Handle; 12. Lower stepped surface; 13. Upper boss; 14. Upper stepped surface; 15. Expanded diameter section; 16. Upper shift lever; 17. Upper fixing plate; 18. Screw hole; 19. Lower fixing plate; 20. Contact; 21. Arc-shaped hole A; 22. Through hole A; 23. Lower shift lever; 24. Through hole B; 25. Arc-shaped hole B; 26. Pull rod; 27. Slant tongue moving bracket; 28. Differential drive assembly. Detailed Implementation

[0021] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0022] Combined with appendix Figure 1-5 The clutch assembly for the lock body includes a clutch body 2, an upper shift plate 3, and a lower shift plate 1. The clutch body 2 is a stepped shaft shape, with a square hole 4 at its center. Upper bosses 13 and lower bosses 7 are correspondingly provided on the upper stepped surface 14 and lower stepped surface 12 of the expanded diameter section 15 in the middle of the clutch body 2. Two upper bosses 13 and two lower bosses 7 are provided, symmetrically arranged along the circumference of the expanded diameter section 15. Upper shift forks A6 and B9 are spaced apart along the circumference of the upper half of the expanded diameter section 15, and a lower shift fork 8 extends along the circumference of the lower half of the expanded diameter section 15. The upper shift plate 3 is fitted onto the upper stepped surface 14 of the clutch body 2 through a central through-hole A22. The lower shift plate 1 is fitted onto the upper stepped surface 14 of the clutch body 2 through a central through-hole A22. The perforation B24 is fitted onto the lower stepped surface 12 of the clutch body 2; the upper paddle 3 includes an upper fixed plate 17 and a lower fixed plate 19 fixedly connected by screws, and the perforation A22 is respectively opened in the middle of the upper fixed plate 17 and the lower fixed plate 19, and the structure is the same. The perforation A22 includes a central circular hole and an arc-shaped hole A21 extending along the outer edge of the circular hole. The two upper bosses 13 on the upper stepped surface 14 are respectively rotatably arranged in the arc-shaped hole A21; a lower paddle 23 extends outward along the outer circular surface of the lower paddle 1, and the perforation B24 includes a central circular hole and an arc-shaped hole B25 extending along the outer edge of the circular hole. The two lower bosses 7 on the lower stepped surface 12 are respectively rotatably arranged in the arc-shaped hole B25.

[0023] Specifically, three screw holes 18 are evenly spaced along the circumferential surfaces of the upper fixing plate 17 and the lower fixing plate 19, and are fixedly connected by screws. An upper lever 16 is located between two screw holes 18 and extends outward on the outer circular surface of the lower fixing plate 19. An inverted "V" shaped contact 20 extends outward along one side of the outer circular surface of the third screw hole 18.

[0024] Specifically, one side of the upper shift fork A6 is an inclined plane, and the other side is provided with an inwardly concave surface. A convex surface A5 is formed at the concave surface and the outer circular surface of the upper shift fork A6. One side of the upper shift fork B9 is an inwardly concave arc-shaped surface, and the other side is an outwardly convex arc-shaped convex surface B10.

[0025] In implementing the clutch assembly for the lock body described in this utility model, during installation, the clutch assembly is placed in the clutch mounting position within the lock body. When unlocking is required, a handle rod is installed inside the square hole 4.

[0026] When the handle 11 is pressed down, the arc-shaped surface of the lower fork 8 of the clutch body 2 is linked with the differential drive assembly 28 on the lock body. When the clutch body 2 rotates, the convex surface A5 of the upper fork A6 abuts against the unlocking force point on the rear side of the hook of the lever 26, pushing the lever 26 upward. The large slide plate moves into the lock body, thereby driving the lock tongue to retract. When the handle returns to the horizontal state, the inverted "V" shaped contact 20 of the upper plate 3 meshes with the upper half gear of the differential drive assembly 28 to complete the unlocking action. At the same time, when the clutch body 2 rotates, the upper plate 3 and the lower plate 1 rotate together with the clutch body 2. The oblique tongue is driven by the upper lever 16 of the upper plate 3 and the lower lever 23 of the lower plate 1 to move the oblique tongue moving bracket 27 inward.

[0027] When locking is required, lift the handle 11, and the convex surface B10 on the upper shift fork B9 presses down on the locking force point on the upper side of the hook of the pull rod 26, pressing the pull rod 26 downward. The large sliding plate moves outward of the lock body, thereby driving the lock tongue to extend and complete the locking operation. The clutch assembly cooperates with the differential drive assembly 28, the inclined tongue moving bracket 27 and the pull rod 26 to smoothly complete the locking and unlocking operations.

[0028] The indoor handle, the inclined tongue moving bracket 27, the large slide plate, the pull rod 26, and the differential drive assembly 28 are all structural components inside the original lock body and are not within the protection scope of this application. Therefore, their specific structures will not be described in detail.

[0029] The parts of this utility model not described in detail are existing technologies.

[0030] The embodiments selected herein for the purpose of disclosing the inventive objectives of this utility model are currently considered appropriate; however, it should be understood that this utility model is intended to include all variations and modifications of the embodiments that fall within the scope of this concept and utility model.

Claims

1. A clutch assembly for a lock body comprising a clutch body, an upper paddle and a lower paddle, characterised in that: The clutch body is shaped like a stepped shaft, with a square hole at the center. Upper and lower bosses are provided on the upper and lower stepped surfaces of the expanded diameter section in the middle of the clutch body, with two of each. They are symmetrically arranged along the circumference of the expanded diameter section. Upper shift fork A and upper shift fork B are spaced apart on the circumference of the upper half of the expanded diameter section, and a lower shift fork extends along the circumference of the lower half of the expanded diameter section. The upper shift fork is fitted onto the upper stepped surface of the clutch body through the central through hole A, and the lower shift fork is fitted onto the lower stepped surface of the clutch body through the central through hole B.

2. The clutch assembly for a lock body of claim 1, wherein: The upper lever includes an upper fixing plate and a lower fixing plate that are fixedly connected by screws. The through hole A is respectively opened in the middle of the upper fixing plate and the lower fixing plate, and the structure is the same. The through hole A includes a round hole in the middle and an arc-shaped hole A extending along the outer edge of the round hole. Two upper bosses on the upper step surface are respectively rotatably set in the arc-shaped hole A.

3. The clutch assembly for a lock body of claim 1, wherein: Three screw holes are evenly spaced along the circumferential surfaces of the upper and lower fixing plates and are fixedly connected by screws. An upper lever is located between two screw holes and extends outward from the outer circumference of the lower fixing plate. An inverted "V" shaped contact extends outward from one side of the outer circumference of the third screw hole.

4. The clutch assembly for a lock body of claim 1, further characterized by: A lower lever extends outward along the outer circular surface of the lower lever. The through hole B includes a central circular hole and an arc-shaped hole B extending along the outer edge of the circular hole. Two lower bosses on the lower step surface are respectively rotatably set in the arc-shaped hole B.

5. The clutch assembly for a lock body of claim 1, further characterized by: One side of the upper shift fork A is an inclined plane, and the other side has an inwardly concave surface, forming a convex surface A at the concave surface and the outer circular surface of the upper shift fork A.

6. The clutch assembly for a lock body according to claim 1, characterized in that: One side of the upper shift fork B is a concave arc-shaped surface, and the other side is a convex arc-shaped surface B.

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