A bidirectional adjusting and limiting lock cylinder linkage dial and lock cylinder driving mechanism

Abstract

This utility model provides a lock cylinder linkage lever and lock cylinder driving mechanism with bidirectional adjustable limit, relating to the field of lock technology. The lock cylinder linkage lever includes a fixed retaining ring and a fork. The fork, when rotating with the lock cylinder, achieves locking and unlocking by pushing from both sides. Fine-tuning devices are provided on both sides of the fork to adjust the pushing contact distance. The lock cylinder driving mechanism includes the aforementioned linkage lever, lock cylinder latch, and locking plate. The locking plate is slidably and rotatably connected to the lock cylinder through a lock cylinder hole. Torque is transmitted to the fork via a linkage contact plate. The locking plate slides in and out during rotation via the locking latch, achieving the locking and unlocking function. A limiting plate is provided on one side of the locking plate. The lock cylinder latch is crescent-shaped to strengthen the fixation between the linkage lever and the lock cylinder. This invention achieves bidirectional adjustable limit through fine-tuning devices, simplifying the assembly process, reducing maintenance costs, and ensuring long-term stable operation of the lock.

Description

Technical Field

[0001] This utility model relates to the field of lock manufacturing technology, and in particular to a lock cylinder linkage lever and lock cylinder drive mechanism with bidirectional adjustable limit. Background Technology

[0002] In actual use of locks, the smooth insertion and removal of keys depends on the lock cylinder rotating to a precise limit position. When the lock cylinder rotates to the designated position for unlocking or locking, the key can be pulled out smoothly. This process requires the lock cylinder and the internal limit structure of the lock to form a precise fit.

[0003] In traditional locks, the limit position is often calibrated by adjusting the bending angle of the linkage plate that contacts the shift fork. However, this adjustment method has directional limitations: it can only calibrate in one direction of lock cylinder rotation, and calibrating in one direction affects the calibration in the other direction; it cannot simultaneously meet the precise alignment requirements of limit positions in two directions. In practical applications, if the limit position deviates in either the unlocking or locking direction, the lock cylinder will not reach the designated position, resulting in difficulty in key insertion and removal and affecting the user experience.

[0004] Therefore, the existing technology lacks a lock cylinder transmission mechanism that can adjust the two directions of lock cylinder rotation separately to improve the stability of lock use. Summary of the Invention

[0005] The purpose of this utility model is to provide a lock cylinder linkage lever and lock cylinder drive mechanism with bidirectional adjustable limit, which solves the problem that traditional locks can only adjust the limit in one direction and cannot take into account the precise alignment of both unlocking and locking, thereby improving the smoothness of key insertion and removal and the stability of the lock.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A bidirectional adjustable limit lock cylinder drive mechanism includes a lock cylinder linkage lever, a lock cylinder latch, and a locking plate. The lock cylinder linkage lever includes a fixed retaining ring and a fork fixedly connected to the lock cylinder. The fixed retaining ring is sleeved on the outside of the lock cylinder, and two opposing lever teeth that engage with the outer groove of the lock cylinder are provided on the inner side of the fixed retaining ring. The fork is fixedly connected to the outside of the fixed retaining ring, and a pair of fine-tuning devices for adjusting the pushing contact distance are provided on both sides of the fork. The fine-tuning device is a metal plate fixed on the fork, or a combination of a through hole structure fixed on the fork and an adjusting screw. The lock cylinder latch has a crescent-shaped structure, which latches onto the outside of the lock cylinder and presses the fixed retaining ring to prevent it from loosening. The lock cylinder latch has two opposing latching teeth on its inner side that fit against the outer groove of the lock cylinder. The opening end of the lock cylinder latch and the top of the latching teeth are partially cut off, forming a V-shape for easy snapping and installation. The locking plate includes a lock cylinder hole, a locking slot, a linkage contact plate, and a limiting plate. The lock cylinder hole is located at one end of the locking plate and fits over the outside of the lock cylinder, allowing the locking plate to slide and rotate with the lock cylinder. The locking slot is located at the other end of the locking plate and engages with the button slot of the unlocking button to realize the locking and unlocking function. The linkage contact plate is fixed on the locking plate, corresponding to the position of the shift fork, and can contact the shift fork to transmit rotational torque. The limiting plate is fixed on one side of the locking plate.

[0008] When closed, inserting the key and turning the lock cylinder causes the fork on the lock cylinder's linkage to rotate. The fork contacts and pushes the linkage contact plate of the locking plate, causing the locking plate to rotate. When the locking plate's locking latch engages with the button slot of the unlock button, the unlock button is locked and cannot be pressed to unlock. The limiting plate abuts against the inner wall of the lock, and the locking latch abuts against the button slot; their combined action keeps the locking plate in the closed limiting state. The fine-tuning device pushes the linkage contact plate, keeping the lock cylinder in the closed limiting state. Under normal circumstances, the keyhole is rotated to a position where the key can be easily removed. If the lock cylinder's closing limiting is offset, the fine-tuning device on one side of the fork can be adjusted to correct the lock cylinder's closing limiting and ensure smooth key removal.

[0009] When unlocking, inserting the key and turning the lock cylinder in the opposite direction will cause the fork on the lock cylinder's linkage to rotate in the opposite direction. The other side of the fork contacts and pushes the other side of the linkage contact plate of the locking plate, causing the locking plate to rotate in the opposite direction. The locking latch of the locking plate slides out, and the unlock button is in the open position. Pressing it will unlock the lock. The locking plate continues to rotate due to the fork until the other side of the limit plate abuts against the button fixing sleeve inside the lock. The locking plate is in the unlocking limit position. The other side of the fine-tuning device pushes against the other side of the linkage contact plate, keeping the lock cylinder in the unlocking limit position. Under normal circumstances, the keyhole is rotated to a position where the key can be easily pulled out. If the unlocking limit of the lock cylinder is offset, the fine-tuning device on the other side of the fork can be adjusted to correct the lock cylinder's unlocking limit and ensure that the key can be pulled out smoothly.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. Two-way precise limit adjustment to improve lock reliability: Through an independently adjustable fine-tuning device (adjustable on both sides of the lever fork), the unlocking and locking limits can be precisely controlled separately, solving the problem that traditional locks can only be adjusted in one direction. This ensures that the key can be accurately aligned in both the open and closed states, improving the stability and durability of the lock.

[0012] Smoother key insertion and removal, better user experience: The fine-tuning device can dynamically correct the lock cylinder limit, so that the keyhole is always at the best angle for easy removal, avoiding the problem of key jamming or difficulty in removal, and significantly improving the user operation experience.

[0013] Faster installation and debugging, reducing labor costs: The V-shaped cut design of the lock cylinder buckle optimizes the assembly of the lock cylinder buckle, enabling rapid installation; the two-way micro-adjustment function reduces the number of repeated adjustments, eliminating the need for multiple disassembly and assembly tests during installation, greatly improving installation efficiency, and is especially suitable for mass production and after-sales maintenance.

[0014] Reduced maintenance difficulty and extended service life: The fine-tuning device supports quick on-site calibration and can correct limit deviations without replacing parts; the V-shaped cut of the lock cylinder buckle reduces installation stress, reduces the risk of component wear, and extends the service life of the lock. Attached Figure Description

[0015] Figure 1 This utility model provides a schematic diagram of the combined structure of a lock cylinder drive mechanism for bidirectional adjustment and limiting.

[0016] Figure 2 The diagram shows the outer side of the combined structure of a lock cylinder drive mechanism for bidirectional adjustment and limiting according to this utility model.

[0017] Figure 3 The present invention relates to a schematic diagram of a lock cylinder buckle structure in a lock cylinder drive mechanism for bidirectional adjustment and limiting.

[0018] Figure 4 The present invention relates to a schematic diagram of the locking plate structure in a lock cylinder drive mechanism for bidirectional adjustment and limiting.

[0019] Figure 5 This utility model provides a schematic diagram of the unlocking button structure in a lock cylinder drive mechanism with bidirectional adjustable limit.

[0020] Figure 6 The schematic diagram of the lock cylinder linkage lever structure in Embodiment 1 of this utility model.

[0021] Figure 7 The schematic diagram of the lock cylinder linkage lever structure in Embodiment 2 of this utility model. Detailed Implementation

[0022] Example 1: As Figure 1-6 As shown, a bidirectional adjustable limit lock cylinder drive mechanism includes a lock cylinder linkage lever, a lock cylinder latch 5, and a locking plate 6. The lock cylinder linkage lever includes a fixed retaining ring 1 and a fork 2 fixedly connected to the lock cylinder. The inner side of the fixed retaining ring 1 has two opposing lever teeth 4 that engage with the outer groove of the lock cylinder. The fork 2 is fixedly connected to the outer side of the fixed retaining ring 1, and a pair of fine-tuning devices 3 for adjusting the pushing contact distance are provided on both sides of the fork 2. The fine-tuning device 3 is a metal piece fixed to the fork 2. The fixed retaining ring 1, the fork 2, and the fine-tuning device 3 are integrally formed. The lock cylinder latch 5 has a crescent-shaped structure, fastens to the outer side of the lock cylinder, and presses against the fixed retaining ring 1 to prevent it from loosening. The inner side of the lock cylinder latch 5 has... There are two opposing latching teeth 11 that fit against the outer groove of the lock cylinder. The opening end of the lock cylinder latch 5 and the top of the latching teeth 11 are partially cut off, and the cut is V-shaped. The locking plate 6 includes a lock cylinder hole 7, a locking latch 8, a linkage contact plate 9, and a limiting plate 10. The lock cylinder hole 7 is located at one end of the locking plate 6 and is sleeved on the outside of the lock cylinder, so that the locking plate 6 and the lock cylinder are slidably and rotatably connected. The locking latch 8 is located at the other end of the locking plate 6 and cooperates with the button slot 14 of the unlocking button 13 inside the lock to realize the unlocking and locking functions. The linkage contact plate 9 is fixed on the locking plate 6 and corresponds to the position of the shift fork 2. It can contact the shift fork 2 and transmit rotational torque. The limiting plate 10 is fixed on one side of the locking plate 6.

[0023] When closed, inserting the key and turning the lock cylinder will rotate the fork 2 on the lock cylinder linkage lever. The fork 2 contacts and pushes the linkage contact plate 9 of the locking plate 6, causing the locking plate 6 to rotate. When the locking latch 8 of the locking plate 6 is engaged in the button slot 12 of the unlocking button 13, the unlocking button is in the locked state and cannot be pressed to unlock. The limiting plate 10 abuts against the inner wall of the lock, and the locking latch 8 abuts against the button slot 12. Together, they keep the locking plate 6 in the closed limiting state. The fine-tuning device 3 pushes the linkage contact plate 9, keeping the lock cylinder in the closed limiting state. Under normal circumstances, the keyhole is rotated to a position where the key can be easily pulled out. If the lock cylinder's closing limit is offset, the bending angle of the metal piece of the fine-tuning device 3 on one side of the fork 2 can be changed to correct the lock cylinder's closing limit and ensure that the key can be pulled out smoothly.

[0024] When unlocking, inserting the key and turning the lock cylinder in the opposite direction will cause the fork 2 on the lock cylinder linkage to rotate in the opposite direction. The other side of the fork 2 contacts and pushes the other side of the linkage contact plate 9 of the locking plate 6, causing the locking plate 6 to rotate in the opposite direction. The locking latch 8 of the locking plate 6 slides out, and the unlock button 13 is in the open state. Pressing it will unlock the lock. The locking plate 6 continues to rotate due to the fork 2 until the other side of the limit plate 10 abuts against the button fixing sleeve inside the lock. The locking plate 6 is in the unlocking limit state. The other side of the fine adjustment device 3 pushes against the other side of the linkage contact plate 9, so that the lock cylinder is in the unlocking limit state. Under normal circumstances, the keyhole is rotated to a position where the key can be easily pulled out. If the unlocking limit of the lock cylinder is offset, the unlocking limit of the lock cylinder can be corrected by changing the bending angle of the metal piece of the fine adjustment device 3 on the other side of the fork 2, ensuring that the key can be pulled out smoothly.

[0025] Example 1 has a simple structure, low manufacturing cost, and is suitable for mass production; the metal sheet is flexible to adjust, requires no additional tools, and is easy to maintain on site; the one-piece molding design reduces the risk of parts loosening and improves long-term stability.

[0026] Example 2: Based on Example 1, Example 2 optimizes the fine-tuning device 3, such as... Figure 7 As shown, the fine-tuning device 3 is a combination of a through-hole structure fixed on the shift fork 2 and an adjusting screw. The through-hole structure is integrally formed with the fixing ring 1 and the shift fork 2. The adjusting screw passes through the through-hole structure. By rotating the adjusting screws on both sides of the fine-tuning device 3, the pushing distance between the fine-tuning device 3 and the linkage contact plate 9 in both directions can be adjusted, thereby correcting the lock cylinder's unlocking and closing limits respectively, ensuring smooth key extraction. Embodiment 2 uses rotating adjusting screws to perform bidirectional adjustment of the lock cylinder limits, offering high adjustment accuracy and repeatability, making it suitable for high-precision locks.

Claims

1. A two-way adjustable limit lock cylinder linkage lever, comprising a fixed retaining ring (1) and a lever fork (2), wherein the fixed retaining ring (1) is fixedly connected to the lock cylinder, and the lever fork (2) is fixedly connected to the outside of the fixed retaining ring (1). When the lock cylinder is rotated, the lever fork (2) pushes the internal structure of the lock on both sides to realize the lock opening and closing function, characterized in that, The fork (2) is equipped with a fine-tuning device (3) on both sides to adjust the pushing contact distance.

2. The lock cylinder linkage lever for bidirectional adjustment and limiting as described in claim 1, characterized in that, The fine-tuning device (3) is a metal plate fixed on the fork (2).

3. The lock cylinder linkage lever for bidirectional adjustment and limiting as described in claim 2, characterized in that, The connection between the fixed retaining ring (1), the shift fork (2), and the fine-tuning device (3) is integrally formed.

4. The lock cylinder linkage lever for bidirectional adjustment and limiting as described in claim 1, characterized in that, The fine-tuning device (3) is a combination of a through-hole structure and an adjusting screw.

5. A lock cylinder linkage lever for bidirectional adjustment and limiting as described in claim 4, characterized in that, The through hole structure, the fixed retaining ring (1), and the shift fork (2) are integrally formed.

6. A lock cylinder drive mechanism for bidirectional adjustment and limiting, characterized in that, It includes a lock cylinder linkage paddle as described in any one of claims 1-5, the fixing ring (1) is sleeved on the outside of the lock cylinder, the fixing ring (1) has two opposing paddle teeth (4) that fit against the outer groove of the lock cylinder on the inner side, the lock cylinder drive mechanism also includes a lock cylinder buckle (5); the lock cylinder buckle (5) is fastened to the outside of the lock cylinder and presses against the fixing ring (1); the lock cylinder buckle (5) has a crescent-shaped structure, the lock cylinder buckle (5) has two opposing buckle teeth (11) that fit against the outer groove of the lock cylinder on the inner side, the opening end of the lock cylinder buckle (5) and the top of the buckle teeth (11) are partially cut off, and the cut is V-shaped.

7. A lock cylinder drive mechanism for bidirectional adjustment and limiting, characterized in that, It includes a lock cylinder linkage lever as described in any one of claims 1-5. The lock cylinder driving mechanism also includes a locking plate (6). The locking plate (6) is slidably and rotatably connected to the lock cylinder. The locking plate (6) can cooperate with other internal structures of the lock through rotation to realize the locking and unlocking function. The locking plate (6) includes a linkage contact plate (9). The linkage contact plate (9) is fixed on the locking plate (6) and corresponds to the position of the lever fork (2). It can contact the fine adjustment devices (3) on both sides of the lever fork (2) to transmit rotational torque.

8. The lock cylinder driving mechanism for bidirectional adjustment and limiting according to claim 7, characterized in that, The locking plate (6) also includes a limiting plate (10), which is fixed on the locking plate (6). The limiting plate (10) cooperates with other internal structures of the lock to restrict the locking plate (6) to rotate only within a certain angle.

9. A lock cylinder driving mechanism for bidirectional adjustment and limiting according to claim 8, characterized in that, The lock cylinder drive mechanism also includes an unlock button (13), the unlock button (13) includes a button slot (14), the locking plate (6) also includes a locking slot (8), the locking slot (8) matches the button slot (14), and by rotating the locking plate (6) in the forward and reverse directions, the locking slot (8) can slide into and out of the button slot (14) to lock and unlock the unlock button (13).

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