Cabinet lock
By designing the main lock tongue, movable base plate, rocker arm and other structures, the stable locking and automatic unlocking of the cabinet lock is achieved, which solves the problems of unstable and low safety of the existing cabinet lock lock, and improves safety and performance.
Patent Information
- Application Number
- CN202421835932.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The locking of existing mechanical cabinet locks is unstable and has low safety.
A cabinet lock is designed, which adopts the coordination of the main lock tongue, movable base plate, rocker arm and other structures. The movable base plate and main lock tongue are driven by the handle, and the rocker arm rotates to drive the connection rod to move, realizing the linkage locking and unlocking of the main lock tongue and the secondary lock tongue.
It improves the stability of the cabinet lock in the locked state, enhances safety, and further improves the performance and durability through detailed structures such as guide holes, dustproof plates, lock core components, etc.
Smart Images
Figure CN222879465U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of locks, and in particular to a cabinet lock. Background Art
[0002] At present, cabinet locks are widely used in various industries, such as generator sets, trucks, etc. Existing mechanical cabinet locks usually lock the cabinet door by directly clamping the lock tongue on the cabinet body. The cabinet lock is mainly locked at a position of the cabinet body by the lock tongue, and the cabinet door is locked unstably and has low security. Utility Model Content
[0003] In order to improve the locking stability of the lock, the present application provides a cabinet lock.
[0004] The present application provides a cabinet lock, which adopts the following technical solution:
[0005] A cabinet lock comprises a lock seat, a handle, a lock body assembly and a lock tongue assembly, wherein the handle is rotatably connected to a groove of the lock seat, and further comprises a mounting plate fixed to the inner side of the lock seat, wherein a sliding groove is provided on a side of the mounting plate close to the lock seat, and the lock tongue assembly comprises:
[0006] A main lock tongue is slidably connected in the slide groove, and the main lock tongue comprises a lock tongue seat and a main body;
[0007] Two rocker arms are both rotatably mounted on the lock seat, and the two rocker arms are symmetrically distributed with the moving direction of the main lock tongue as the center line;
[0008] A movable shaft, rotatably connected to the lock tongue seat;
[0009] A movable bottom plate is slidably connected in the slide groove and is located between the lock seat and the lock tongue seat;
[0010] Wherein, the rocker arm includes two connecting pieces, one of which is provided with a waist hole, and the other connecting piece is provided with a connecting hole, and the mounting plate is provided with a movable hole for the connecting piece to extend into the slide groove, and the connecting pieces of the two rocker arms are respectively extended into the slide groove and movably connected with the movable shaft through the waist holes; one end of the movable shaft is connected to the movable bottom plate and moves with the movable bottom plate; the movement of the movable bottom plate is controlled by the handle; when the handle is pulled outward, the movable bottom plate drives the main lock tongue to move in the direction of unlocking, and the end of the rocker arm away from the movable shaft contracts toward the direction of the slide groove; an elastic member for driving the main lock tongue to move toward the locked state is installed in the slide groove.
[0011] By adopting the above technical solution, in actual use, auxiliary lock tongues can be installed at the upper and lower ends of the cabinet door, and connected to the mounting holes of the connecting piece of the rocker arm through the connecting rod to achieve linkage. When unlocking is required, the user pulls the handle outward, and the handle drives the movable bottom plate to move in the unlocking direction; the movement of the movable bottom plate drives the main lock tongue to move together, and at the same time, the rocker arm rotates accordingly under the drive of the movable shaft, so that the connecting piece of the rocker arm away from the end of the movable shaft shrinks toward the direction of the slide groove, and moves with the connecting rod, thereby releasing the locking state of the auxiliary lock tongue and the main lock tongue. When the user releases the handle, the elastic member releases the elastic force, pushing the auxiliary lock tongue and the main lock tongue back to the locked position, and realizing automatic locking of the cabinet door.
[0012] Optionally, a guide hole connected to the slide groove is provided on the side of the mounting plate away from the lock seat, and the guide hole extends along the moving direction of the main lock tongue. A limiting hole extending along the moving direction of the main lock tongue is provided on the movable bottom plate, and both ends of the movable axis are respectively located between the limiting hole and the guide hole.
[0013] Optionally, the locking tongue assembly further includes a dustproof plate, which is connected to the movable shaft and moves in the slide groove following the movable shaft. The dustproof plate always covers the guide hole during the process of following the movement of the movable shaft.
[0014] By adopting the above technical solution, the dustproof plate always covers the guide hole when following the movable shaft, thereby further protecting the guide hole from the intrusion of dust and other debris. At the same time, the dustproof plate can also play a role in noise reduction.
[0015] Optionally, the lock body assembly includes a lock core seat, a lock core and a shift block, the lock core seat is fixed on the lock seat, the lock core is located in the lock core seat, the shift block is fixedly connected to the lock core, the rotation of the shift block is controlled by the lock core, a locking plate is fixed to the end of the movable bottom plate away from the main body, and when the shift block rotates to the farthest end and abuts against the locking plate, the main lock tongue is locked in a locked state
[0016] By adopting the above technical solution, the rotation of the dial block is controlled by the lock core, thereby controlling the position of the locking plate, thereby realizing the locking and unlocking operations of the main lock tongue.
[0017] Optionally, an unlocking block is provided at one end of the movable bottom plate close to the main body, and a pushing block is fixed to one end of the handle close to the mounting plate for pushing the unlocking block to move in a direction away from the main lock tongue when the handle is opened outward.
[0018] Optionally, the rocker arm further includes a rivet, the rivet passes through the rocker arm and is fixed on the lock seat, the rocker arm further includes a sleeve coaxially sleeved on the rivet, and the rocker arm is limited between the rivet and the sleeve.
[0019] By adopting the above technical solution, the stability and durability of the rocker arm are improved through the fixing method of rivets and sleeves.
[0020] Optionally, the rivet is of a stepped structure, the riveted section at the front end of the rivet passes through the mounting plate and the lock seat, and the step between the middle end of the rivet and the riveted section presses and fixes the mounting plate on the lock seat.
[0021] By adopting the above technical solution, the rivet has a stepped structure, which can effectively fix the mounting plate on the lock seat, thereby enhancing the stability of the overall structure.
[0022] Optionally, a limiting buckle for inserting the mounting plate is also fixed on the inner side of the lock seat.
[0023] By adopting the above technical solution, the position of the mounting plate is further limited, ensuring accurate matching between the components.
[0024] In summary, the present application includes at least one of the following beneficial effects:
[0025] 1. The present invention adopts the coordination of the main lock tongue, the movable bottom plate, the rocker arm and other structures, so that the cabinet lock is more stable in the locked state, and the safety is effectively improved.
[0026] 2. The present invention further enhances the performance and durability of the cabinet lock by providing detailed structures such as guide holes, dustproof plates, and lock core components. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 is a schematic diagram of the structure of the handle in the embodiment of the present application;
[0028] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application;
[0029] Figure 3 is an exploded schematic diagram of a mounting plate in an embodiment of the present application;
[0030] Figure 4 is an exploded schematic diagram of a rocker arm in an embodiment of the present application;
[0031] Figure 5 It is an exploded schematic diagram showing the connection relationship between the mounting plate and the lock seat in the embodiment of the present application;
[0032] Figure 6 is a partial cross-sectional view of an embodiment of the present application;
[0033] Figure 7 is an exploded schematic diagram of an embodiment of the present application;
[0034] Figure 8 It is a partial cross-sectional view of a lock body assembly according to an embodiment of the present application.
[0035] Description of reference numerals:
[0036] 1. Lock seat; 11. Opening; 12. Limit buckle;
[0037] 1.Handle; 21.Push block;
[0038] 2. Mounting plate; 31. Slide groove; 32. Guide hole; 33. Movable hole; 34. Retaining edge;
[0039] 3. Lock tongue assembly;
[0040] 41. main lock tongue; 411. lock tongue seat; 412. main body;
[0041] 42, rocker arm; 421, connecting piece; 4211, waist hole; 4212, connecting hole; 422, rivet; 423, sleeve;
[0042] 43. Movable axis;
[0043] 44, movable bottom plate; 441, locking plate; 442, limiting hole; 443, unlocking block; 444, blocking hook;
[0044] 45. Dustproof plate;
[0045] 4. Lock body assembly; 51, lock core seat; 52, lock core; 53, shift block; 54, lock body nut; 55, lock cap; 56, screw;
[0046] 5. Elastic parts. DETAILED DESCRIPTION
[0047] The present application is further described in detail below in conjunction with the accompanying drawings.
[0048] The present application embodiment discloses a cabinet lock. Figure 1 , 2 The cabinet lock comprises a lock base 1, a handle 2, a mounting plate 3, a lock body assembly 5 and a bolt assembly 4. The handle 2 is rotatably connected to the groove of the lock base 1 through a rotating shaft, and is used to control the switch lock of the bolt assembly 4. The mounting plate 3 is fixed to the inner side of the lock base 1, and a sliding groove 31 is provided on the side of the mounting plate 3 close to the lock base 1. The bolt assembly 4 is installed between the mounting plate 3 and the lock base 1.
[0049] Reference Figure 2 , 3The bolt assembly 4 includes a main bolt 41, two rocker arms 42, a movable shaft 43 and a movable bottom plate 44. The main bolt 41 is slidably connected to the slide groove 31 of the mounting plate 3. The main bolt 41 includes a bolt seat 411 and a main body 412, which is responsible for directly locking the cabinet door. The movable shaft 43 is rotatably connected to the bolt seat 411 and is connected to the movable bottom plate 44 at the same time, so as to achieve the synchronous movement of the movable bottom plate 44 and the main bolt 41. The two rocker arms 42 are symmetrically distributed on the lock seat 1 with the moving direction of the main bolt 41 as the center line, and the rocker arms 42 are rotatably connected to the lock seat 1. One end of the rocker arm 42 extends into the slide groove 31 and is connected to the movable shaft 43 to achieve linkage with the main bolt 41.
[0050] Reference Figure 1 , 3 The movable bottom plate 44 is slidably connected to the slide groove 31 and is located between the lock base 1 and the lock tongue base 411. Furthermore, the lock base 1 is provided with an opening 11 connected to the slide groove 31, and the end of the movable bottom plate 44 close to the handle 2 is provided with an unlocking block 443 extending toward the opening 11, and the end of the handle 2 close to the movable bottom plate 44 is fixed with a push block 21, and the push block 21 is located on the movable path of the unlocking block 443. When the handle 2 is opened outward, the push block 21 can push the unlocking block 443, so that the movable bottom plate 44 moves with the main lock tongue 41 toward the unlocking direction.
[0051] Reference Figure 3 The movable bottom plate 44 is located at one end of the unlocking block 443 and is provided with a blocking hook 444 bent toward a direction away from the opening 11 . The blocking hook 444 extends into the lock tongue seat 411 to limit the lock tongue seat 411 to prevent the lock tongue seat 411 from escaping from the slide groove 31 .
[0052] Reference Figure 3 , 4 A guide hole 32 connected to the slide slot 31 is provided on one side of the mounting plate 3 away from the lock base 1. The guide hole 32 extends along the moving direction of the main lock tongue 41. A limiting hole 442 extending along the moving direction of the main lock tongue 41 is provided on the movable bottom plate 44. Both ends of the movable shaft 43 are respectively located between the limiting hole 442 and the guide hole 32. When the movable bottom plate 44 is locked, the limiting hole 442 can provide a moving space for the movable shaft 43, so that the user can push the main lock tongue 41 to retract into the slide slot 31.
[0053] Reference Figure 4 , 5The rocker arm 42 includes two connecting pieces 421 and a rivet 422, one of the connecting pieces 421 is provided with a waist hole 4211 for connecting with the movable shaft 43; the other connecting piece 421 is provided with a connecting hole 4212. The rivet 422 passes through the middle of the rocker arm 42 and is fixed on the lock seat 1. The rocker arm 42 also includes a sleeve 423 coaxially sleeved on the rivet 422. The rocker arm 42 is limited between the rivet 422 and the sleeve 423, and the rocker arm 42 can rotate around the axis of the rivet 422. The mounting plate 3 is provided with a movable hole 33 for the connecting piece 421 to extend into the slide slot 31. The connecting pieces 421 of the two rocker arms 42 extend into the slide slot 31 respectively, and are movably connected with the movable shaft 43 through the waist hole 4211.
[0054] The connection hole 4212 on the connecting piece 421 can be used to connect with the connecting rod, and the connecting rod is connected to the auxiliary lock tongues installed at both ends of the cabinet door. When unlocking is required, the user pulls the handle 2 outward, and the handle 2 drives the movable bottom plate 44 to move toward the unlocking direction through the push block 21. The movement of the movable bottom plate 44 drives the main lock tongue 41 to move together. At the same time, the rocker arm 42 rotates accordingly under the drive of the movable shaft 43, so that the connecting piece 421 at one end of the rocker arm 42 away from the movable shaft 43 shrinks toward the direction of the slide groove 31, and moves with the connecting rod, thereby releasing the locking state of the auxiliary lock tongue and the main lock tongue 41.
[0055] Reference Figure 5 The rivet 422 is a stepped structure with a gradually decreasing inner diameter. The riveted section at the end of the rivet 422 passes through the mounting plate 3 and is riveted to the lock seat 1. The step between the middle end of the rivet 422 and the riveted section tightly fixes the mounting plate 3 to the lock seat 1. A limit buckle 12 for inserting the mounting plate 3 is also fixed to the inner side of the lock seat 1. During installation, the mounting plate 3 is first inserted into the limit buckle 12 for positioning, and then passed through the rivet 422 for anchoring.
[0056] Reference Figure 6 An elastic member 6 is installed in the slide groove 31 for driving the main lock tongue 41 to move toward the locked state. Specifically, a downwardly bent rib 34 is provided at one end of the slide groove 31 away from the main lock tongue 41. In this embodiment, a spring is selected as the elastic member 6. One end of the spring abuts against the rib 34 at the bottom of the slide groove 31, and the other end abuts against the lock tongue seat 411. When the handle 2 is not subjected to external force, the spring is in a compressed state, and the main lock tongue 41 is pushed to the locked position by elastic force, thereby realizing automatic locking of the cabinet door.
[0057] Reference Figure 7 , 8The lock body assembly 5 includes a lock core seat 51, a lock core 52, a shift block 53, a lock body nut 54, a lock cap 55 and a screw 56. The lock core seat 51 passes through the lock cap 55 and the lock base 1 in sequence, and then is locked on the lock base 1 by the lock body nut 54. The lock core 52 is located in the lock core seat 51, and the shift block 53 is fixedly connected to the lock core 52 by the screw 56, so that the rotation of the shift block 53 is controlled by the lock core 52. A locking plate 441 is fixed to the end of the movable bottom plate 44 away from the main body 412. When the shift block 53 rotates to the farthest end and abuts against the locking plate 441, the movable bottom plate 44 is fixed, and the handle 2 cannot shift the movable bottom plate 44. After the shift block 53 is turned away, the movable bottom plate 44 can be unlocked and moved.
[0058] Reference Figure 2 , 3 The bolt assembly 4 also includes a dust plate 45. The main function of the dust plate 45 is to prevent dust and other debris from entering the interior of the slide groove 31 and reduce the noise during the overall use process. The dust plate 45 is connected to the movable shaft 43 and moves in the slide groove 31 following the movable shaft 43. Specifically, the dust plate 45 abuts against the bolt seat 411 and moves along the bottom of the slide groove 31. The dust plate 45 always covers the guide hole 32 during the movement of the movable shaft 43. When in use, the surface of the dust plate 45 in contact with the mounting plate 3 is coated with butter to help sliding.
[0059] The implementation principle of a cabinet lock in the embodiment of the present application is:
[0060] When unlocking is required, the user pulls the handle 2 outward, and the handle 2 drives the movable bottom plate 44 to move toward the unlocking direction through the push block 21. The movement of the movable bottom plate 44 drives the main lock tongue 41 to move together, and at the same time, the rocker arm 42 rotates accordingly under the drive of the movable shaft 43, so that the end of the rocker arm 42 away from the movable shaft 43 shrinks toward the slide groove 31, thereby releasing the locking state of the main lock tongue 41 and the auxiliary lock tongue.
[0061] When the user releases the handle 2, the elastic member 6 releases its elastic force, pushing the movable bottom plate 44 and the main locking tongue 41 back to the locked position, thereby achieving automatic locking of the cabinet door.
[0062] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A cabinet lock, comprising a lock base (1), a handle (2), a lock body assembly (5) and a lock tongue assembly (4), wherein the handle (2) is rotatably connected to a groove of the lock base (1), and characterized in that: It also includes a mounting plate (3) fixed to the inner side of the lock seat (1), a sliding groove (31) being provided on a side of the mounting plate (3) close to the lock seat (1), and the locking tongue assembly (4) includes: A main lock tongue (41) is slidably connected to the slide groove (31), and the main lock tongue (41) comprises a lock tongue seat (411) and a main body (412); Two rocker arms (42) are both rotatably mounted on the lock seat (1), and the two rocker arms (42) are symmetrically distributed with the moving direction of the main lock tongue (41) as the center line; A movable shaft (43) rotatably connected to the lock tongue seat (411); A movable bottom plate (44) is slidably connected to the slide groove (31) and is located between the lock seat (1) and the lock tongue seat (411); The rocker arm (42) comprises two connecting pieces (421), one connecting piece (421) is provided with a waist hole (4211), and the other connecting piece (421) is provided with a connecting hole (4212); the mounting plate (3) is provided with a movable hole (33) for the connecting piece (421) to extend into the slide groove (31); the connecting pieces (421) of the two rocker arms (42) are respectively extended into the slide groove (31) and are movably connected to the movable shaft (43) through the waist holes (4211); the movable shaft (43 ) is connected to the movable bottom plate (44) and moves with the movable bottom plate (44); the movement of the movable bottom plate (44) is controlled by the handle (2); when the handle (2) is pulled outward, the movable bottom plate (44) drives the main lock tongue (41) to move in the unlocking direction, and the end of the rocker arm (42) away from the movable shaft (43) contracts in the direction of the slide groove (31); an elastic member (6) is installed in the slide groove (31) for driving the main lock tongue (41) to move toward the locked state.
2. A cabinet lock according to claim 1, characterized in that: A guide hole (32) communicating with the slide groove (31) is formed on a side of the mounting plate (3) away from the lock seat (1); the guide hole (32) extends along the movable direction of the main lock tongue (41); a limiting hole (442) extending along the movable direction of the main lock tongue (41) is formed on the movable bottom plate (44); and two ends of the movable shaft (43) are respectively located between the limiting hole (442) and the guide hole (32).
3. A cabinet lock according to claim 2, characterized in that: The locking tongue assembly (4) further comprises a dustproof plate (45), wherein the dustproof plate (45) is connected to the movable shaft (43) and moves in the slide groove (31) following the movable shaft (43). When the dustproof plate (45) moves following the movable shaft (43), the guide hole (32) is always covered.
4. A cabinet lock according to claim 1, characterized in that: The lock body assembly (5) comprises a lock core seat (51), a lock core (52) and a shift block (53); the lock core seat (51) is fixed on the lock seat (1); the lock core (52) is located in the lock core seat (51); the shift block (53) is fixedly connected to the lock core (52); the rotation of the shift block (53) is controlled by the lock core (52); a locking plate (441) is fixed to one end of the movable bottom plate (44) away from the main body (412); when the shift block (53) rotates to the farthest end and abuts against the locking plate (441), the main lock tongue (41) is locked in a locked state.
5. The cabinet lock according to claim 1, characterized in that: An unlocking block (443) is provided at one end of the movable bottom plate (44) close to the main body (412), and a pushing block (21) is fixed at one end of the handle (2) close to the mounting plate (3) for pushing the unlocking block (443) to move in a direction away from the main locking tongue (41) when the handle (2) is opened outwards.
6. A cabinet lock according to claim 1, characterized in that: The rocker arm (42) further comprises a rivet (422), the rivet (422) passing through the rocker arm (42) and being fixed on the lock seat (1), the rocker arm (42) further comprises a sleeve (423) coaxially sleeved on the rivet (422), the rocker arm (42) being limited between the rivet (422) and the sleeve (423).
7. A cabinet lock according to claim 6, characterized in that: The rivet (422) is of a stepped structure; the riveted section at the front end of the rivet (422) passes through the mounting plate (3) and the lock seat (1); and the step between the middle end of the rivet (422) and the riveted section tightly fixes the mounting plate (3) on the lock seat (1).
8. A cabinet lock according to claim 7, characterized in that: A limiting buckle (12) for inserting the mounting plate (3) is also fixed on the inner side of the lock seat (1).