A connecting rod lock
By designing a linkage lock with both mechanical key and mechanical password locking methods, the problems of wear and tear and the single unlocking method are solved, and the stability, security and convenience are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SCOKE SMART HARDWARE (SHAOXING) CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-09
AI Technical Summary
Existing linkage locks are prone to wear, affecting sealing and compactness, and have a single opening method that is easy to jam, making them inconvenient to use.
A linkage lock was designed, which adopts a dual locking method of mechanical key and mechanical combination. It combines base, handle, lock cylinder assembly and linkage mechanism, and achieves multiple locking through components such as knurled pin, rotating shaft and combination wheel, which enhances impact protection and reduces wear through dust cover and impact pad.
It improves the stability and convenience of locks, prevents wear and tear, enhances security and aesthetics, avoids jamming, and improves the user experience.
Smart Images
Figure CN224338749U_ABST
Abstract
Description
Technical Field
[0001] This application relates to a linkage lock, belonging to the field of lock technology. Background Technology
[0002] Currently, linkage locks on the market are mostly used in communication facility cabinets or electrical cabinet doors. Their working principle is mainly as follows: when the handle is turned, the gear on the transmission shaft rotates, the gear meshes with the transmission bar, causing the transmission bar to move vertically, and driving the associated top and bottom rods to move relative to the cabinet door, thereby realizing the opening and closing of the cabinet.
[0003] However, during application, we found that the above-mentioned device is prone to wear. Although this can be mitigated by coating or plastic wrapping, the additional coating or plastic wrapping reduces the installation space for related components, which may compromise the sealing and compactness of the installation, hindering the stability of the linkage lock structure and affecting the use of the equipment. On the other hand, the lock has a relatively simple opening method, which is prone to jamming and is not convenient to use.
[0004] In view of the above, this application is hereby submitted. Utility Model Content
[0005] In view of this, this application provides a linkage lock that not only protects the handle from impact and protects components such as the base, but also provides a dual locking method using a mechanical key and a mechanical password.
[0006] Specifically, this application is implemented through the following scheme:
[0007] A linkage lock includes a base, a handle, a lock cylinder assembly, and a linkage mechanism. The base is provided with a mounting groove, and the mounting groove is provided with a shaft hole, a fixing pin, and a lock hole from top to bottom. The keypad assembly is fixed in the mounting groove by the fixing pin, and the linkage mechanism is installed on the back side of the base by pan head screws and the shaft hole.
[0008] The handle includes a connecting end and a movable end. The connecting end is connected to the side wall of the mounting groove and the rotating shaft through a knurled pin. The rotating shaft passes through the shaft hole and the other end is connected to the pan head screw. A matching notch is provided on the handle between the connecting end and the movable end. The matching notch is set to correspond to the code wheel of the code device assembly.
[0009] The lock cylinder assembly is installed on the movable end, and the latch is installed in the mounting groove by a pin. It is respectively set with the latch and the combination lock assembly of the lock cylinder assembly. The lock cylinder assembly and the latch cooperate to realize mechanical key locking, and the combination lock assembly cooperates with the latch to realize mechanical combination locking.
[0010] Furthermore, as a preferred option:
[0011] The movable end is equipped with a dust cover, which is located above the lock cylinder assembly.
[0012] The base has a lock lug notch at its bottom, and the handle has a lock lug on its back, with the lock lug and lock lug notch corresponding to each other. More preferably, the movable end has a fastening piece, which is an arc-shaped plate structure and fastens to the end of the base.
[0013] A wave-shaped gasket is provided between the connecting end and the rotating shaft.
[0014] The back of the movable end is provided with an anti-collision pad, which has a gradually changing thickness structure, with the thinner side facing the direction of the rotation axis.
[0015] The lock hole is provided with downward inclined guide plates on both sides, forming an oblique opening structure at the lock hole.
[0016] The cipher assembly includes cipher wheels, a support rod, a lock sleeve, and a code adjustment button. Several cipher wheels and lock sleeves are respectively fitted onto the support rod, the code adjustment button is located at the top of the support rod, and the bottom of the support rod is fastened to the lock.
[0017] More preferably:
[0018] It also includes a fixed housing, which is located above the latch and is fixed in the mounting groove by a fixing pin. The combination wheel and the lock sleeve are movably embedded in the fixed housing.
[0019] The support rod is provided with a stop rib, and the locking sleeve is provided with a sliding groove. 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 schematic diagram of the rear structure of this application;
[0023] Figure 3 This is a side view of the structure of this application;
[0024] Figure 4 This is a schematic diagram of the front structure of this application;
[0025] Figure 5 for Figure 4 Cross-sectional view along the MM direction;
[0026] Figure 6 for Figure 5A magnified view of part A in the middle;
[0027] Figure 7 for Figure 5 Cross-sectional view along the NN direction;
[0028] Figure 8 This is a schematic diagram of the split structure of this application;
[0029] Figure 9 This is a schematic diagram of the cryptographic component at part B in this application.
[0030] Numbered in the diagram: 1. Base; 11. Mounting slot; 12. Shaft hole; 13. Lock hole; 131. Guide plate; 14. Fixing pin; 15. Lock lug notch; 2. Handle; 21. Connecting end; 211. Knurled pin; 212. Wave-shaped washer; 213. Anti-collision pad; 214. Washer; 22. Matching notch; 23. Moving end; 231. Snap-fit piece; 24. Lock lug; 3. Rotating shaft; 31. Sealing ring; 32. Elastic retaining ring; 33. Nut; 4. Lock cylinder assembly; 41. Latch; 42. Dust cover; 421. Screw; 422. Spring 1; 43. Lock; 431. Pin hole; 44. Torsion spring; 45. Pin; 5. Combination device assembly; 51. Combination wheel; 511. Fixing groove; 52. Support rod; 521. Support foot; 522. Spring 2; 523. Stop rib; 53. Lock sleeve; 531. Positioning rib; 532. Sliding groove; 54. Code switching button; 55. Fixing shell; 551. Spring-loaded buckle bar; 6. Linkage mechanism; 61. Transmission shell; 611. Connecting shaft; 612. Pan head screw; 62. Short rack; 63. Long rack; 7. Back cover. Detailed Implementation
[0031] 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.
[0032] 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.
[0033] 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.
[0034] This application provides a linkage lock, and embodiments of this application are described below with reference to the accompanying drawings.
[0035] See Figures 1 to 4 , Figures 1 to 4 The diagram shows this embodiment. It includes a base 1, a handle 2, a lock cylinder assembly 4, a keypad assembly 5, and a linkage mechanism 6.
[0036] A transmission housing 61 is mounted on the back of the base 1. A short rack 62 and a long rack 63 are mounted on the transmission housing 61. A connecting shaft 611 is provided on the side of the transmission housing 61 facing the base 1. A mounting groove 11 is provided on the front of the base 1. A shaft hole 12, a fixing pin 14, and a lock hole 13 are provided in the mounting groove 11 from top to bottom. The rotating shaft 3 is threaded into the shaft hole 12 by a nut 33 fitted on it, and is connected to the transmission housing 61 of the linkage mechanism 6 at its end by a pan head screw 612. When connected, a sealing ring 31 and an elastic retaining ring 32 are fitted on the rotating shaft 3 on both sides of the shaft hole 12. The fixing housing 55 of the keypad assembly 5 is installed in the mounting groove 11 by the fixing pin 14. A guide plate 131 is provided on the side of the lock hole 13 facing the handle. The guide plate 131 is inclined downward to form a bevel structure, which facilitates the smooth sliding of the handle 2 into the mounting groove 11 and prevents the handle 2 from scratching the base 1 during installation. A lock lug notch 15 is provided at the bottom of the base 1.
[0037] The handle 2 includes a connecting end 21 and a movable end 23. The connecting end 21 has a pin hole arranged laterally, and the corresponding end of the rotating shaft 3 also has a pin hole. A knurled pin 211 passes through the two pin holes, connecting the connecting end 21 to the rotating shaft 3 and simultaneously installing the handle 2 in the mounting groove 11. A washer 214 and a wave washer 212 are fitted between the connecting end 21 and the rotating shaft 3. When the handle 2 is lifted, they fix the connecting end 21 of the handle 2 to prevent the handle 2 from hitting the base 1 when it falls freely. A lock cylinder base is provided on the movable end 23, which corresponds to the lock hole 13. The lock cylinder assembly 4 is mounted on the movable end 23 through the lock cylinder base, and a latch 41 is installed on the end of the lock cylinder assembly that passes through the lock cylinder base. A dust cover mounting hole is provided below the lock cylinder base. The dust cover 42 is mounted on the movable end 23 by a screw 421 and a spring 422 fitted on the screw 421. It is normally fastened above the lock cylinder assembly 4 to protect the lock cylinder assembly 4. Below the dust cover mounting hole, the movable end 23 bends in an arc towards the base 1 to form a fastening piece 231. A lock nose 24 is provided on the corresponding handle 2. The lock nose 24 is inserted into the lock nose notch 15, which can be used to install a padlock to improve security. The fastening piece 231 is used to hide it, reducing the height of the exposed base and not affecting the aesthetics after the padlock is installed.
[0038] The latch 43 is provided with a pin hole 431, which is installed above the lock hole 13 by a pin 45 and is correspondingly set with the latch 41.
[0039] Combination Figures 5 to 9 The combination device assembly 5 includes combination wheels 51, support rods 52, lock sleeves 53, code adjustment buttons 54, and a fixing shell 55. The fixing shell 55 is fixed in the mounting groove 11 by fixing pins 14. The support rod 52 has a stop rib 523 and a support foot 521 at its bottom; the support foot 521 is fastened to the latch 43, and a spring 522 is fitted onto the support rod 52 above the support foot 521. The number of combination wheels 51 corresponds to the number of lock sleeves 53, and both are fitted onto the support rod 52. The combination wheels 51 have numbers 0-9 on their outer surface (corresponding matching notches 22 are provided on the handle 2), and a fixing groove 511 is provided inside. Except for the bottommost lock sleeve, the lock sleeves 53 above the combination wheels 51 are installed between the combination wheels through the fixing grooves 511. The lock sleeve 53 has a positioning rib 531. The stop rib 523 cooperates with the positioning rib 532 and the sliding groove 532 to achieve the positioning of the lock sleeve 531 and the support rod 52. A code adjustment button 54 is installed on the top of the support rod 52. When the code needs to be adjusted, first rotate the code wheel 51 to the preset correct code, then press the code adjustment button 54 to rotate the code wheel 51 to the set number, and release the code adjustment button 54 to complete the new code setting.
[0040] The aforementioned lock cylinder assembly 4, in conjunction with the latch 43, enables mechanical key locking, while the combination lock assembly 5, in conjunction with the latch 43, enables mechanical combination locking. If the combination is forgotten, first insert the mechanical key into the lock cylinder assembly, rotate the handle 2 to open it, lift the movable end 23 of the handle 2, reverse it to face the back of the handle 2, and rotate the combination wheel 51 until the notch in the lock sleeve 53 is fully exposed. The displayed combination is the correct combination.
[0041] In the above device, when the handle 2 is rotated 90˚, the linkage mechanism 6 can achieve an adjustment distance of up to 16mm, and when rotated to 135˚, the linkage mechanism 6 can achieve an adjustment distance of up to 23.5mm.
[0042] In some embodiments, a back cover 7 may also be installed on the back side of the base 1. The back cover 7 is fixed to the back side of the lock hole 13 to protect the lock cylinder assembly.
[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 link lock comprising a base, a handle, a lock cylinder assembly and a linkage mechanism, characterised in that: The base is provided with a mounting groove, and the mounting groove is provided with a shaft hole, a fixing pin and a lock hole from top to bottom. The password device assembly is fixed in the mounting groove by the fixing pin, and the connecting mechanism is installed on the back side of the base by pan head screws and shaft holes. The handle includes a connecting end and a movable end. The connecting end is connected to the side wall of the mounting groove and the rotating shaft through a knurled pin. The rotating shaft passes through the shaft hole and the other end is connected to the pan head screw. A matching notch is provided on the handle between the connecting end and the movable end. The matching notch is set to correspond to the code wheel of the code device assembly. The lock cylinder assembly is installed on the movable end, and the latch is installed in the mounting groove by a pin, corresponding to the latch and keypad assembly of the lock cylinder assembly respectively.
2. A link lock according to claim 1, wherein: The movable end is equipped with a dust cover, which is located above the lock cylinder assembly.
3. A link lock according to claim 1, wherein: The base has a lock lug notch at the bottom and a lock lug on the back of the handle, with the lock lug and lock lug notch corresponding to each other.
4. A link lock according to claim 3, wherein: The movable end is provided with a fastening piece, which is an arc-shaped plate structure and fastens to the end of the base.
5. A link lock according to claim 1, wherein: A wave-shaped gasket is provided between the connecting end and the rotating shaft.
6. A link lock according to claim 1, wherein: The back of the movable end is provided with an anti-collision pad, which has a gradually changing thickness structure, with the thinner side facing the direction of the rotation axis.
7. A link lock according to claim 1, wherein: The lock hole is provided with downward inclined guide plates on both sides, forming an oblique opening structure at the lock hole.
8. A link lock according to claim 1, wherein: The cipher assembly includes cipher wheels, a support rod, a lock sleeve, and a code adjustment button. Several cipher wheels and lock sleeves are respectively fitted onto the support rod, the code adjustment button is located at the top of the support rod, and the bottom of the support rod is fastened to the lock.
9. A link lock according to claim 8, wherein: It also includes a fixed housing, which is located above the latch and is fixed in the mounting groove by a fixing pin. The combination wheel and the lock sleeve are movably embedded in the fixed housing.
10. A link lock according to claim 8, wherein: The support rod is provided with a stop rib, and the locking sleeve is provided with a sliding groove.