Active spring bolt capable of being opened leftwards and rightwards
The detachable bolt design solves the problem of cumbersome bolt direction adjustment in existing locks, enabling quick and convenient bolt direction adjustment and improving the installation efficiency and security of locks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU BOLAN INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-15
AI Technical Summary
Adjusting the direction of the existing lock tongue requires removing multiple screws, which is cumbersome, time-consuming, and labor-intensive, affecting the installation efficiency and security of the lock.
It adopts a detachable bolt design, which allows the bolt direction to be adjusted directly without opening the lock cover through the bolt support rod and limiting structure. The bolt can be switched to open left or right using fixing screws.
It enables quick and convenient adjustment of the locking tongue direction, improving installation efficiency and safety while reducing operating steps and labor intensity.
Smart Images

Figure CN224244600U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of door lock technology, specifically relating to an active lock tongue that can open to the left and right. Background Technology
[0002] The lock body is the main structural part of a door lock, typically including the lock cylinder, bolt, outer shell, and other internal components. It is the core of the lock, responsible for receiving control signals from the key or other unlocking methods and driving the movement of the bolt to lock or unlock the door. The bolt works by rotating the lock cylinder (i.e., driving the pivot) or by pressing a button, turning a switch, etc., causing the bolt to enter or exit the keyhole in the door frame.
[0003] To accommodate different door opening directions and installation requirements, the direction of the bolt needs to be adjusted during installation to prevent incomplete insertion or jamming, thus ensuring stable operation and increasing security and reliability. However, adjusting the bolt direction of existing locks requires removing screws from the lock body cover, opening the cover, and reversing the bolt direction. This operation is too cumbersome, requiring the removal of multiple screws and disassembly for adjustment, which is time-consuming and labor-intensive. Therefore, this utility model provides an active lock that can open from both sides. Utility Model Content
[0004] The purpose of this invention is to provide an active locking tongue that can open from both sides, thereby solving the problems mentioned in the background art.
[0005] The specific technical solution adopted in this utility model is as follows:
[0006] An active latch that can open to the left and right includes a lock body and a lock body panel provided on one side of the lock body. The surface of the lock body panel is provided with a latch hole, and the latch is also slidably installed in the latch hole and adapted to it.
[0007] The lock body has a latch support rod connected to one end of the latch inside the lock body. The other end of the latch support rod is connected to a latch trigger plate inside the lock body. A limiting support for supporting the latch support rod is provided inside the lock body near the latch trigger plate. A latch spring is sleeved on the surface of the latch support rod between the latch and the limiting support.
[0008] A connecting hole is provided on one side of the latch corresponding to one end of the latch support rod. Positioning holes are symmetrically provided on the upper and lower surfaces of the latch, and the positioning holes extend into the connecting hole. A fixing screw is installed in the positioning hole on the upper surface of the latch, and a positioning screw hole is provided on one end of the latch support rod corresponding to the fixing screw.
[0009] The present invention is further configured such that: one end of the locking tongue support rod has multiple raised textures arranged in a circumferential array on its surface, and the inner wall of the connecting hole has multiple recessed textures arranged in a circumferential array, wherein the raised textures at one end of the locking tongue support rod are adapted to the recessed textures on the inner wall of the connecting hole.
[0010] This utility model is further configured such that when one end of the latch support rod is inserted into the connecting socket, one end of the fixing screw extends through the positioning hole into the connecting socket and is threaded into the positioning screw hole.
[0011] The present invention is further configured such that: a limiting block is integrally provided at the top and bottom middle of the latch trigger plate; a limiting groove is symmetrically provided on the inner wall of the lock body corresponding to the two limiting blocks; and the upper and lower ends of the latch trigger plate slide within the limiting groove through the limiting blocks.
[0012] The present invention is further configured such that: the limiting support is fixed in the lock body, and the other end of the lock tongue support rod passes through the limiting support and is slidably connected to it.
[0013] The present invention is further configured such that: the locking tongue spring is sleeved on the outside of the locking tongue support rod, and one end of the locking tongue spring is fixed to one side of the limiting support.
[0014] The technical effects achieved by this utility model are as follows:
[0015] This utility model relates to a movable latch that can open to the left and right. The latch and latch support are designed to be detachable, allowing the latch to be pulled out directly from the outside of the lock body without opening the lock cover. After rotating the latch, it can be inserted back into the latch hole and secured with the fixing screws. This enables the latch to open to the left and right without removing the lock body screws, making it convenient, quick, time-saving, and labor-saving, thus improving the installation efficiency of the lock body. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the lock body in this practical application;
[0017] Figure 2 This is a schematic diagram of the internal structure of the lock body in this utility model;
[0018] Figure 3 This is a schematic diagram of the installation of the locking tongue support rod in this utility model;
[0019] Figure 4 This is a schematic diagram of the locking tongue and locking tongue support rod in this practical application.
[0020] In the diagram: 1. Lock body; 2. Lock tongue; 21. Lock tongue support rod; 22. Lock tongue spring; 23. Limiting support; 24. Lock tongue trigger plate; 25. Limiting slide; 26. Limiting block; 3. Fixing screw; 31. Positioning hole; 32. Connecting socket; 33. Positioning screw hole; 4. Lock body panel; 41. Lock tongue hole; Detailed Implementation
[0021] To make the purpose and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.
[0022] like Figure 1-4 As shown, a movable latch that can open to the left and right includes a lock body 1 and a lock body panel 4 provided on one side of the lock body 1. The surface of the lock body panel 4 has a latch hole 41 and a latch 2 that is slidably installed and adapted to the latch hole 41. A latch support rod 21 is connected to one end of the latch 2 inside the lock body 1. The other end of the latch support rod 21 is connected to a latch trigger plate 24 inside the lock body 1. Limiting blocks 26 are integrally provided at the top and bottom middle of the latch trigger plate 24. Limiting grooves 25 are symmetrically provided on the inner wall of the lock body 1 corresponding to the two limiting blocks 26. The upper and lower ends of the latch trigger plate 24 slide in the limiting grooves 25 through the limiting blocks 26. One end of the latch support rod 21 is limited by the latch trigger plate 24, which can ensure that the latch support rod 21 will not deviate. On the one hand, it can ensure the accuracy of the latch 2 during adjustment, and on the other hand, it can ensure the stability of the latch 2 when it extends or retracts from the latch hole 41.
[0023] Inside the lock body 1, near the latch trigger plate 24, there is a limiting support 23 for supporting the latch rod 21. A latch spring 22 is sleeved on the surface of the latch rod 21 between the latch 2 and the limiting support 23. The limiting support 23 is fixed inside the lock body 1. The other end of the latch rod 21 passes through the limiting support 23 and is slidably connected to it. The latch spring 22 is sleeved on the outside of the latch rod 21, and one end of the latch spring 22 is fixed to one side of the limiting support 23. The limiting support 23 ensures the firm support of the latch rod 21 and further limits its movement. Secondly, as... Figure 2 As shown, a represents the drive shaft of the latch 2, and b represents the trigger plate of the latch 2. The trigger plate is connected to the drive shaft, and the trigger plate is located between the limit support 23 and the latch trigger plate 24. To open and close the latch 2, that is, to control the latch 2 to extend or retract from the latch hole 41, it is only necessary to control the drive shaft to drive the trigger plate to rotate clockwise, thereby pushing the latch trigger plate 24 to move along the limit slide groove 25, thereby causing the latch trigger plate 24 to drive the latch support rod 21 to move, thereby pulling the latch 2 back into the latch hole 41. Conversely, it pushes the latch 2 to extend.
[0024] A connecting hole 32 is provided on one side of the latch 2 corresponding to one end of the latch support rod 21. Positioning holes 31 are symmetrically provided on the upper and lower surfaces of the latch 2, extending through to the connecting hole 32. A fixing screw 3 is installed in the positioning hole 31 on the upper surface of the latch 2. A positioning screw hole 33 is provided on one end of the latch support rod 21 corresponding to the fixing screw 3. When one end of the latch support rod 21 is inserted into the connecting hole 32, one end of the fixing screw 3 extends through the positioning hole 31 into the connecting hole 32 and is threaded into the positioning screw hole 33. When it is necessary to adjust the left or right opening of the latch 2, it can be... Without opening the lock body cover, directly use the bolt to loosen the fixing screw 3 to remove it from the lock tongue 2, then pull out the lock tongue 2 to separate it from the lock tongue support rod 21. Then rotate the pulled-out lock tongue 2 180 degrees and insert it into the lock tongue hole 41. At the same time, one end of the lock tongue support rod 21 is inserted into the connecting hole 32. At this time, the positioning screw hole 33 corresponds to the positioning hole 31 on the surface of the lock tongue 2. Then screw the fixing screw 3 into the positioning screw hole 33 at one end of the lock tongue support rod 21 to fix the lock tongue 2, thereby completing the left and right reversing adjustment of the lock tongue 2.
[0025] The surface of one end of the latch support rod 21 has multiple raised patterns arranged in a circumferential array, and the inner wall of the connecting hole 32 has multiple recessed patterns arranged in a circumferential array. The raised patterns on one end of the latch support rod 21 are adapted to the recessed patterns on the inner wall of the connecting hole 32. The purpose of setting raised patterns on one end of the latch support rod 21 to match the recessed patterns in the connecting hole 32 is to facilitate the guiding and limiting function when the latch support rod 21 is inserted into the connecting hole 32, ensuring that after it is fully inserted, the positioning screw hole 33 is exactly on the same center line as the positioning hole 31, which facilitates the screwing in of the fixing screw 3.
[0026] The working principle of this utility model is as follows: During use, if... Figure 1 and 2 As shown, when it is necessary to adjust the left and right sides of the latch 2, simply remove the fixing screw 3 on the latch 2, then pull the latch 2 out of the latch hole 41, rotate it 180 degrees, and then insert it back into the latch hole 41, so that one end of the latch support rod 21 is inserted into the connecting insertion hole 32 on the side of the latch 2. Then screw the fixing screw 3 into the latch 2 to connect and fix the latch support rod 21 to the latch 2, thus completing the left and right opening and reversing operation of the latch 2. This operation does not require opening the lock cover and can directly adjust the left and right opening and reversing, saving time and effort and making the operation convenient.
[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.
Claims
1. A movable latch capable of opening to the left and right, comprising a lock body (1) and a lock body panel (4) disposed on one side of the lock body (1), wherein a latch hole (41) is provided on the surface of the lock body panel (4), characterized in that, It also includes a latch (2) that is slidably installed in and adapted to the latch hole (41); The lock body (1) has a latch support rod (21) connected to one end of the latch (2) inside the lock body (1). The other end of the latch support rod (21) is connected to a latch trigger plate (24) inside the lock body (1). A limiting support (23) for supporting the latch support rod (21) is provided inside the lock body (1) near the latch trigger plate (24). A latch spring (22) is sleeved on the surface of the latch support rod (21) between the latch (2) and the limiting support (23). A connecting hole (32) is provided on one side of the latch (2) at one end of the latch support rod (21). Positioning holes (31) are symmetrically provided on the upper and lower surfaces of the latch (2), and the positioning holes (31) extend into the connecting hole (32). A fixing screw (3) is installed in the positioning hole (31) on the upper surface of the latch (2). A positioning screw hole (33) is provided on one end of the latch support rod (21) at the fixing screw (3).
2. The active locking tongue capable of opening to the left and right according to claim 1, characterized in that, The surface of one end of the latch support rod (21) has multiple raised patterns arranged in a circumferential array, and the inner wall of the connecting hole (32) has multiple recessed patterns arranged in a circumferential array. The raised patterns at one end of the latch support rod (21) are adapted to the recessed patterns on the inner wall of the connecting hole (32).
3. The active locking tongue capable of opening to the left and right according to claim 1, characterized in that, When one end of the latch support rod (21) is inserted into the connecting socket (32), one end of the fixing screw (3) extends through the positioning hole (31) into the connecting socket (32) and is screwed into the positioning screw hole (33).
4. A movable locking tongue capable of opening to the left and right according to claim 1, characterized in that, The top and bottom middle of the latch trigger plate (24) are integrally provided with a limiting block (26). The inner wall of the lock body (1) is symmetrically provided with limiting grooves (25) corresponding to the two limiting blocks (26). The upper and lower ends of the latch trigger plate (24) slide in the limiting grooves (25) through the limiting blocks (26).
5. A movable locking tongue capable of opening to the left and right according to claim 1, characterized in that, The limiting support (23) is fixed inside the lock body (1), and the other end of the lock tongue support (21) passes through the limiting support (23) and is slidably connected to it.
6. A movable locking tongue capable of opening to the left and right according to claim 1, characterized in that, The locking tongue spring (22) is sleeved on the outside of the locking tongue support rod (21), and one end of the locking tongue spring (22) is fixed to one side of the limiting support (23).