A trolley lock

Abstract

The application provides a trolley lock and belongs to the technical field of locks. The trolley lock comprises a base, a handle and a lock cylinder assembly. The front surface of the base is provided with a handle assembly groove, and the bottom of the handle assembly groove is provided with a clamping groove. The back surface of the base is provided with a frame edge. The handle comprises a movable end and a connecting end. The back side of the movable end is provided with a button. The button is arranged correspondingly to the frame edge, and the button and the frame edge cooperatively form an anti-disengagement locking mechanism. The handle is installed in the handle assembly groove through the connecting end. The lock cylinder assembly is installed at the movable end of the handle. The lock cylinder assembly is provided with a lock bolt at the tail end. The lock bolt is arranged correspondingly to the clamping groove. The inner side of the handle is fixedly provided with a connecting shaft. The connecting shaft is provided with a connecting elbow. The connecting elbow is connected to an upper sliding block and a lower sliding block. The movable end of the handle is pulled, and the connecting shaft is synchronously and horizontally displaced, thereby driving the connecting elbow, the upper sliding block and the lower sliding block to move to the center position. The trolley lock of the application not only has a hidden anti-disengagement mechanism, but also has a pick-resistant design.

Description

Technical Field

[0001] This application relates to a lever lock, belonging to the field of lock technology. Background Technology

[0002] Pull-rod locks are a common feature in chassis and cabinets, often used in conjunction with pull-rod systems. A typical pull-rod lock generally includes a pull rod, base, and handle, resulting in a complex structure and cumbersome operation. In application, we have found that: the handle protrudes from the base, making it susceptible to prying or impact damage, or even detachment upon impact, leading to poor security and stability; the pull rod's actuation process is complex, and the operating space is limited, resulting in a large installation footprint and a small opening range in some applications.

[0003] In view of the above, this application is hereby submitted. Utility Model Content

[0004] In view of this, this application provides a lever lock that not only has a concealed anti-detachment mechanism, but also has an anti-pry design.

[0005] Specifically, this application is implemented through the following scheme:

[0006] A lever lock includes a base, a handle, and a lock cylinder assembly.

[0007] The base has a handle mounting groove on its front side, and a locking groove at the bottom of the handle mounting groove; the base also has a frame edge on its back side.

[0008] The handle includes a movable end and a connecting end. A button is installed on the back of the movable end, and the button is correspondingly positioned on the frame edge. The two work together to form an anti-disengagement lock. The handle is installed in the handle mounting slot through the connecting end.

[0009] The lock cylinder assembly is installed at the movable end of the handle, and a latch is installed at the end of the lock cylinder assembly, with the latch corresponding to a slot.

[0010] A connecting shaft is fixed to the inside of the handle, and a connecting arm is installed on the connecting shaft. The connecting arm is connected to the upper slider and the lower slider respectively. When the movable end of the handle is pulled, the connecting shaft moves laterally in sync, causing the connecting arm, the upper slider, and the lower slider to move towards the center position.

[0011] The aforementioned device is installed on the cabinet door. Rotating the lock cylinder assembly causes the latch to disengage from the slot, unlocking the lock cylinder assembly and the base. Pressing the button disengages the button from the frame, opening the anti-disengagement lock between the movable end of the handle and the base. Lifting the movable end causes the handle to swing counterclockwise relative to the connecting end, displacing the connecting shaft laterally. This, in turn, moves the connecting arm, upper slider, and lower slider towards the center position, lowering their height and completing the overall unlocking process. All these components work together to achieve synchronized unlocking. The handle is installed in a handle mounting groove, allowing the bottom surface of the handle to sink into the base, preventing tools from prying it open and providing an anti-pry effect.

[0012] Furthermore, as a preferred option:

[0013] The button is pinned to the back of the movable end of the handle. A spring is provided between the button and the back of the movable end. A latching tooth is provided on the side of the button facing the base, and the latching tooth is snapped into the frame edge. More preferably, the button is provided with a boss, and part of the spring is fitted onto the boss, with part protruding between the boss and the back of the movable end.

[0014] The connecting arm includes an upper arm and a lower arm. The upper end of the upper arm is pinned to the upper slider, and the lower end of the lower arm is pinned to the lower slider. The lower end of the upper arm and the upper end of the lower arm are pinned to the connecting shaft.

[0015] In the vertical direction, the upper slider includes a first groove and a second groove, with the upper end of the connecting arm pinned to the second groove of the upper slider; the lower slider includes a first groove and a second groove, with the lower end of the connecting arm pinned to the second groove of the lower slider. More preferably, the upper slider is provided with a guide plate, which is configured to cooperate with the second groove of the upper slider; the lower slider is provided with a guide plate, which is configured to cooperate with the second groove of the lower slider.

[0016] The base has mounting notches on its side, which correspond to the upper and lower sliders.

[0017] A U-shaped pressure plate is installed on the base, and the upper slider is installed on the base through the U-shaped pressure plate.

[0018] The latch is a sliding latch.

[0019] An upper pull rod is installed on the upper slider, and a lower pull rod is installed on the lower slider. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the present application;

[0022] Figure 2 This is a three-dimensional structural diagram from another perspective of this application;

[0023] Figure 3 This is a side view of this application;

[0024] Figure 4 This is a schematic diagram of the rear structure of this application;

[0025] Figure 5 This is a longitudinal sectional view of this application;

[0026] Figure 6 for Figure 5 Cross-sectional view along the AA direction;

[0027] Figure 7 This is a schematic diagram of the split structure of this application.

[0028] Numbered in the diagram: 1. Base; 11. Handle assembly slot; 12. Frame edge; 13. Slot; 14. Mounting notch; 15. U-shaped pressure plate; 2. Handle; 21. Button; 211. Pin hole; 212. Knurled pin; 213. Boss; 214. Spring; 215. Snap tooth; 22. Moving end; 23. Lock cylinder assembly slot; 24. Connecting shaft; 25. Connecting end; 251. Mounting shaft; 3. Lock cylinder assembly; 31. Latch; 4. Connecting arm; 41. Upper arm; 42. Lower arm; 5. Upper slider; 51. First slot; 52. Second slot; 53. Guide plate; 54. Screw; 55. Smooth rod pin; 6. Lower slider; 7. Upper pull rod; 8. Lower pull rod. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the technical solutions in the embodiments of this application will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit the technical solutions of this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0030] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or position shown in the accompanying drawings, and are only for ease of description and should not be construed as limiting the present technical solution.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of technical features. "A plurality of" means two or more, unless otherwise explicitly defined.

[0032] This application provides a lever lock, and embodiments of this application are described below with reference to the accompanying drawings.

[0033] See Figures 1 to 4 , Figures 1 to 4 The following diagrams show various angles of this embodiment. The components include a base 1, a handle 2, a lock cylinder assembly 3, a connecting arm 4, and upper and lower sliders 5 and 6.

[0034] The base 1 mainly consists of two parts: a front part and a back part. The front part is provided with a handle mounting groove 11, and the bottom of the handle mounting groove 11 is provided with a slot 13. The back part is provided with a frame edge 12 and a mounting notch 14.

[0035] The handle mounting groove 11 is deep enough to ensure that when the connecting end 25 of the handle 2 is installed through the mounting shaft 251, the bottom surface of the handle 1 is embedded in the base 1, avoiding prying, shaking, or collision, thus achieving the effect of anti-prying.

[0036] A lock cylinder mounting groove 23 is provided on the movable end 22 of the handle 2, and the lock cylinder assembly 3 is installed on the handle 2 through the lock cylinder mounting groove 23. A latch 31 is installed at the bottom of the lock cylinder assembly 3. The latch 31 can be a sliding latch, which is correspondingly set with the slot 13. When the key is inserted and the lock cylinder assembly 3 is rotated, the lock cylinder assembly 3 causes the latch 31 to deviate from the slot 13, and the locking structure between the lock cylinder assembly 3 and the base 1 is opened, completing the unlocking of the latch point.

[0037] A button 21 is installed on the back side of the movable end 22. The button 21 has a pin hole 211 through which a knurled pin 212 passes, securing the button 21 to the back side of the handle 2. The button 21 has a "7"-shaped structure. Its horizontal portion has an upward-protruding latch 215 at its end, which corresponds to the frame edge 12. In the locked state, the latch 215 engages with the frame edge 12, forming an anti-disengagement lock to prevent the movable end 22 from detaching from the base. Its vertical portion has a boss 213 at its end, on which a spring 214 is fitted. The spring 214 protrudes between the boss 213 and the back side of the movable end 22. The spring 214 enables the pressing of the button 21. When the button 21 is pressed, the latch 215 disengages from the frame edge 12, opening the anti-disengagement lock between the movable end 22 of the handle 2 and the base 1, thus unlocking the locking point.

[0038] A connecting shaft 24 is fixedly installed in the middle of the side of the handle 2 facing the handle mounting groove 11. The connecting arm 4 is pinned to the connecting shaft 24 by a smooth rod pin, so that it can move laterally with the connecting shaft 24 and also produce curved movement relative to the pin connection part. The connecting arm 4 is connected to the upper slider 5 and the lower slider 6 respectively. An upper pull rod 7 is installed on the upper slider 5 and a lower pull rod 8 is installed on the lower slider 6.

[0039] Specifically, in this embodiment, Figure 2 , Figure 7 For example, the connecting arm 4 includes an upper arm 41 and a lower arm 42. The upper and lower ends of the upper arm 41 and the lower arm 42 both have pin holes. Vertically, the upper slider 5 has a first groove 51 and a second groove 52, with the first groove 51 at the top and the second groove 52 at the bottom. The lower slider 5 also has a first groove and a second groove, with the first groove at the bottom and the second groove at the top. The upper pull rod 7 is installed in the first groove 51 by a screw 54. The upper end of the upper arm 41 is installed in the second groove 52 by a smooth rod pin 55. The lower ends of the upper arm 41 and the upper ends of the lower arm 42 are respectively installed in the connecting shaft 24 by a smooth rod pin. The lower end of the lower arm 42 is pinned to the second groove of the lower slider 6 by a smooth rod pin. The lower pull rod 8 is installed in the first groove of the lower slider 6 by a screw. When the movable end 22 of the handle 2 is pulled... Figure 5 When the arrow swings in the direction shown, the connecting shaft 24 moves laterally in sync, causing the upper arm 41 and upper slider 5, lower arm 42 and lower slider 6 to move towards the center position. In response, the upper pull rod 7 and lower pull rod 8 also move towards the center position of the lock (the horizontal position where the connecting shaft 24 is located), achieving a displacement of up to 17.5mm for the upper pull rod 7 and lower pull rod 8. The cooperation between the connecting arm 4 and the upper slider 5, lower slider 6 and upper pull rod 7 and lower pull rod 8 greatly increases the operable space of the entire lock.

[0040] To facilitate installation and ensure the stability of the motion path, a guide plate 53 can be provided on the upper slider 5. Similarly, a guide plate can also be provided on the lower slider 6. The guide plate cooperates with the second groove to guide the displacement of the connecting arm 4. The guide plate can be formed by extending from one side wall of the second groove.

[0041] In some embodiments, the base 1 has a mounting notch 14 on its side, which corresponds to the upper slider 5 and the lower slider 6 to facilitate the screwing in.

[0042] In some embodiments, a U-shaped pressure plate 15 is installed on the base 1, and the upper slider 5 is installed on the base 1 through the U-shaped pressure plate 15.

[0043] The above-described embodiments are merely illustrative of several feasible implementations of the present invention, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the present invention, nor are the embodiments intended to limit the scope of protection in the claims of the present invention. For those skilled in the art, various modifications and improvements can be made without departing from the concept of the present invention. All equivalent implementations or changes that do not depart from the present invention should be included in the technology of the present invention.

Claims

1. A lever lock, comprising a base, a handle, and a lock cylinder assembly, characterized in that: The base has a handle mounting groove on its front side, and a locking groove at the bottom of the handle mounting groove; the base also has a frame edge on its back side. The handle includes a movable end and a connecting end. A button is installed on the back of the movable end, and the button is correspondingly positioned on the frame edge. The two work together to form an anti-disengagement lock. The handle is installed in the handle mounting slot through the connecting end. The lock cylinder assembly is installed at the movable end of the handle, and a latch is installed at the end of the lock cylinder assembly, with the latch corresponding to a slot. A connecting shaft is fixed to the inside of the handle, and a connecting arm is installed on the connecting shaft. The connecting arm is connected to the upper slider and the lower slider respectively. When the movable end of the handle is pulled, the connecting shaft moves laterally in sync, causing the connecting arm, the upper slider, and the lower slider to move towards the center position.

2. A lever lock according to claim 1, characterized in that: The button is pinned to the back of the movable end of the handle. A spring is provided between the button and the back of the movable end. The button has a latching tooth on the side facing the base, and the latching tooth is snapped into the frame edge.

3. A lever lock according to claim 2, characterized in that: The button has a boss, and a spring is fitted onto the boss, with part of it protruding between the boss and the back of the movable end.

4. A lever lock according to claim 1, characterized in that: The connecting arm includes an upper arm and a lower arm. The upper end of the upper arm is pinned to the upper slider, and the lower end of the lower arm is pinned to the lower slider. The lower end of the upper arm and the upper end of the lower arm are pinned to the connecting shaft.

5. A lever lock according to claim 1, characterized in that: In the vertical direction, the upper slider includes a first groove and a second groove, and the upper end of the connecting arm is pinned to the second groove of the upper slider; the lower slider includes a first groove and a second groove, and the lower end of the connecting arm is pinned to the second groove of the lower slider.

6. A lever lock according to claim 5, characterized in that: The upper slider is provided with a guide plate, which is configured to cooperate with the second groove of the upper slider; the lower slider is provided with a guide plate, which is configured to cooperate with the second groove of the lower slider.

7. A lever lock according to claim 1, characterized in that: The base has mounting notches on its side, which correspond to the upper and lower sliders.

8. A lever lock according to claim 1, characterized in that: A U-shaped pressure plate is installed on the base, and the upper slider is installed on the base through the U-shaped pressure plate.

9. A lever lock according to claim 1, characterized in that: The latch is a sliding latch.

10. A lever lock according to any one of claims 1 to 9, characterized in that: An upper pull rod is installed on the upper slider, and a lower pull rod is installed on the lower slider.

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