Tension lock with dust cover self-locking and anti-vibration mechanism

Abstract

The utility model relates to a tension lock with a dust cover self-locking and anti-vibration mechanism, which is designed to solve the technical problem that the key hole of the existing similar products lacks a structural design for unlocking through a dust cover, and the locked steel bolt is easily ejected due to the lock rod spring when used in a scene with more vibration, causing the locked cabinet door to lose pre-tightening. The key points are that the outer diameter of the lock rod in the base of the tension lock is sleeved with a lock core, the outer diameter of the ring rib platform of the lock core in the base is provided with a dust cover spring, the waist grooves on both sides of the dust cover are fixed to the top opening in the base through the single-head knurled pins driven into the outer diameter of both sides of the base, the outer diameter of the steel wire retaining ring is fixed to the inner diameter of the base, and the ring rib platform of the lock core is limited to the inner diameter of the steel wire retaining ring; the inner diameter shape of the top opening of the dust cover corresponds to the outer diameter shape of the end boss of the lock core, and when the key is inserted into the opening at the top of the base to press the dust cover down to move below the boss at the end of the lock core, the lock core is unlocked and driven to rotate by the key.

Description

Technical Field

[0001] The utility model relates to a cam lock, which is a tension lock with a dust cover self-locking and anti-vibration mechanism. Background Art

[0002] The cam lock is a cylindrical lock that is easy to install. The cylindrical lock is a lock that rotates the shaft or lock core, and the components combined by the two, and drives the actuator to rotate to unlock or lock. It is small and cheap, easy to use in a variety of equipment, and is mainly used for metal cabinet doors, locomotive doors or rail transit distribution cabinets. The main installation method of the tension lock on the market is to lock and fix the base from behind the door panel with a large hexagonal nut, and waterproof it by pressing the base with a gasket. As disclosed in the Chinese patent document, the application number is 202222310338.X, the authorization announcement date is 2023.03.03, and the utility model name is "an automatic locking cam lock mechanism". However, conventional tool key tension locks generally lack a structural design for unlocking through a dust cover; when used in scenes with more vibration, the locked steel bolt will automatically bounce open due to the lock rod spring, causing the locked cabinet door to lose pre-tightening; although the lock rod S groove of the conventional tightening lock has a certain locking function, it is still not 100% safe, and this semi-enclosed lock may still fail. Therefore, it is necessary to further improve the existing unlocking device or similar products to meet the above-mentioned usage requirements. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a tension lock with a dust cover self-locking and anti-vibration mechanism in the art, so as to solve the technical problem that the key hole of the existing similar products lacks a structural design for unlocking through a dust cover, and the locked steel bolt is easily ejected due to the lock rod spring when used in scenes with more vibration, causing the locked cabinet door to lose pre-tightening. The purpose is achieved through the following technical solutions.

[0004] A tension lock with a dust cover self-locking and anti-vibration mechanism, the tension lock base outer diameter thread is provided with a large hexagonal nut, the top hole outer diameter of the base is provided with a raised outer flange, the square hole of the steel bolt is arranged at the square end of the lock rod protruding from the base, and the end of the lock rod at the square end is provided with an external hexagonal anti-loosening screw; the key points of its structural design are that the outer diameter of the lock rod in the base is sleeved with a lock core, the non-knurled pins on both sides of the lock rod are inserted into the S groove at one end of the lock core, the outer diameter of the spiral hole at the S groove of the lock rod is sleeved with an axle sleeve, and the end of the non-knurled pin protruding from the spiral hole at the lock core is simultaneously located at the L-shaped sleeve edge at the bottom of the axle sleeve, the bottom groove of the lock core in the base and the top groove of the lock rod are provided with a lock rod spring, and the outer diameter above the S groove of the lock core in the base is provided with a raised ring rib platform, A dust cover spring is provided on the outer diameter above the ring rib platform of the lock core in the base, and the dust cover spring is abutted against the bottom of the dust cover inserted into the outer diameter of the other end of the lock core in the top hole of the base, and the waist-shaped grooves on both sides of the dust cover are fixed to the top hole in the base through single-head knurled pins driven into the outer diameters on both sides of the base; a sealing ring is provided in the sealing groove at the outer diameter of the ring rib platform of the lock core, and a steel wire retaining ring is provided on the inner diameter of the base above the ring rib platform of the lock core, and the outer diameter of the steel wire retaining ring is snap-fixed to the inner diameter of the base, and the ring rib platform of the lock core is limited to the inner diameter of the steel wire retaining ring; the inner diameter shape of the top hole of the dust cover corresponds to the outer diameter shape of the end boss of the lock core. When the key is inserted into the hole at the top of the base to press the dust cover down and move it to below the boss at the end of the lock core, the lock core is unlocked and the lock core is driven to rotate by the key. Thus, when the key is inserted into the base, the dust cover is pressed down until the dust cover and the lock core fall off, and then the lock core can be further rotated by the key to unlock; otherwise, the tension lock cannot be unlocked or locked and is in a self-locking state; the boss of the above-mentioned lock core is an end portion larger than the diameter of the shaft.

[0005] The inner diameter of the top opening of the dust cover is an inner octagon, and the outer diameter of the corresponding boss at the end of the lock core is an outer octagon. The outer octagonal outer diameter of the lock core fits with the inner octagonal inner diameter of the dust cover. The outer octagonal outer diameter of the lock core is set at the lock core-shaped boss at the end of the lock core. The lock core is not limited to an octagon, and can also be a triangle, a square or a pentagon.

[0006] The bottom of the dust cover where the dust cover and the lock core are sleeved forms an annular groove, and the dust cover spring is sleeved into the annular groove at the bottom of the dust cover at the outer diameter of the lock core in the base.

[0007] An inner serrated locking washer and a waterproof liner are arranged at the outer diameter thread above the large hexagonal nut of the base.

[0008] The utility model has reasonable structural design, is easy to produce, install and use, has good dustproof effect and good stability; it solves the problems of similar tension locks on the market that they are not resistant to vibration, are accidentally unlocked or misoperated; it is suitable for use as a tension lock with a dust cover self-locking and anti-vibration mechanism, as well as a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the explosion structure of an embodiment of the utility model.

[0010] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure after assembly.

[0011] Figure 3 yes Figure 2 The cross-sectional structure of Figure 1 .

[0012] Figure 4 yes Figure 2 The cross-sectional structure of Figure 2 .

[0013] Serial number and name of the attached drawings: 1. Dust cover, 101. Waist-shaped groove, 2. Lock core, 201. S groove, 202. Ring rib platform, 3. Dust cover spring, 4. Bushing, 401. Socket edge, 5. Wire retaining ring, 6. Sealing ring, 7. Lock rod spring, 8. Single-head knurled pin, 9. Non-knurled pin, 10. Lock rod, 11. Base, 12. Waterproof gasket, 13. Internal serrated locking washer, 14. Large hexagonal nut, 15. Steel bolt, 16. External hexagonal anti-loosening screw. Implementation

[0014] Now, in conjunction with the accompanying drawings, the structure and use of the utility model are further described. Figure 1-Figure 4As shown, a large hexagonal nut 14 is provided at the outer diameter thread of the base 11 of the tension lock, a raised outer flange is provided at the outer diameter of the top hole of the base, an internal serrated locking washer 13 and a waterproof gasket 12 are provided at the outer diameter thread above the large hexagonal nut of the base; the square hole of the steel bolt 15 is arranged at the square end of the locking rod 10 extending from the base, and an external hexagonal anti-loosening screw 16 is provided at the end of the locking rod at the square end. The outer diameter of the lock rod in the base is sleeved with a lock core 2, and the non-knurled pins 9 extending out of both sides of the lock rod are inserted into the S-slot 201 at one end of the lock core. The outer diameter of the spiral hole at the S-slot of the lock rod is sleeved with a shaft sleeve 4, and the end of the non-knurled pin extending out of the spiral hole at the lock core is simultaneously located at the L-shaped sleeve edge 401 at the bottom of the shaft sleeve. A lock rod spring 7 is provided in the groove at the bottom of the lock core in the base and the groove at the top of the lock rod. A raised ring rib platform 202 is provided on the outer diameter above the S-slot of the lock core in the base, and a dust cover spring 3 is provided on the outer diameter above the ring rib platform of the lock core in the base. The dust cover spring is abutted against the bottom of the dust cover 1 sleeved on the outer diameter of the other end of the lock core in the top hole of the base, and the waist-shaped grooves 101 on both sides of the dust cover are fixed to the top hole in the base through the single-head knurled pins 8 driven into the outer diameter on both sides of the base. A sealing ring 6 is provided in the sealing groove at the outer diameter of the ring rib platform of the lock core, and a wire retaining ring 5 is provided at the inner diameter of the base above the ring rib platform of the lock core. The outer diameter of the wire retaining ring is snap-fixed to the inner diameter of the base, and the ring rib platform of the lock core is limited to the inner diameter of the wire retaining ring; the inner diameter shape of the top opening of the dust cover corresponds to the outer diameter shape of the end boss of the lock core. When the key is inserted into the opening at the top of the base and the dust cover is pressed down to move below the boss at the end of the lock core, the lock core is unlocked and the lock core is driven to rotate by the key.

[0015] The inner diameter of the top opening of the dust cover is an inner octagon, and the outer diameter of the corresponding boss at the end of the lock core is an outer octagon. The outer octagonal outer diameter of the lock core fits with the inner octagonal inner diameter of the dust cover. The bottom of the dust cover where the dust cover fits with the lock core forms an annular groove, and the dust cover spring is inserted into the annular groove at the bottom of the dust cover at the outer diameter of the lock core in the base.

[0016] Unlocking: Insert the tool key into the dust cover. After pressing the specified stroke, the dust cover limiter will be separated from the locking surface of the lock core. The lock core will rotate 180° counterclockwise. After the lock rod steel bolt extends a specified distance, it will rotate 90° counterclockwise and disengage from the lock buckle structure welded on the cabinet body. The cabinet door is opened to unlock. Pull out the key, the dust cover pops up, and the lock core completes self-locking.

[0017] Locking: Press down the cabinet door, insert the tool key into the dust cover, and after pressing the specified stroke, the dust cover limiter will be separated from the locking surface of the lock core, the lock core will rotate 180° clockwise, and the lock rod steel bolt will shrink the specified distance and then rotate 90° clockwise, and the lock structure welded on the cabinet body will be tightened and locked. The cabinet door is tightened to lock, the key is pulled out, the dust cover pops up, and the lock core completes self-locking.

[0018] Therefore, the tension lock is a dust cover with a waist-shaped groove, and involves a lock core with a tool lock core-shaped boss, and the boss height is the unlocking height of the lock core; when unlocking the tension lock, the dust cover needs to be pressed down with a key to a certain stroke before the lock core can be rotated to complete the unlocking. If the dust cover does not reach the specified height, the tension lock cannot complete the unlocking or locking action and is in a self-locking state; the above is the unlocking and locking action of the lock, which can maximize the stability and reliability of the locking system and has an anti-foolproof function.

[0019] To sum up, the tension lock relates to the field of cabinet accessories and tools. It is a vibration-proof tension lock suitable for use in rail transit distribution cabinets. It is a tension lock that can achieve 100% self-locking through a dust cover. The structure has a traditional tension lock S-groove semi-enclosed vibration-proof structure, and also has a dust cover self-locking mechanism. The structure has been tested to meet the IP65 dust and water resistance level, which solves the problem of the current tension lock having the steel bolt automatically unlocking in scenarios with more vibrations.

Claims

1. A tension lock with a dust cover self-locking and anti-vibration mechanism, wherein a large hexagonal nut (14) is provided at the outer diameter thread of the base (11) of the tension lock, a raised outer flange is provided at the outer diameter of the top hole of the base, a square hole of a steel bolt (15) is provided at the square end of a locking rod (10) extending from the base, and an outer hexagonal anti-loosening screw (16) is provided at the end of the locking rod at the square end; characterized in that The outer diameter of the lock rod (10) in the base (11) is sleeved with a lock core (2), and the non-knurled pins (9) extending from both sides of the lock rod are inserted into the S groove (201) at one end of the lock core. The outer diameter of the spiral hole at the S groove of the lock rod is sleeved with a shaft sleeve (4), and the end of the non-knurled pin extending from the spiral hole at the lock core is simultaneously located at the L-shaped sleeve edge (401) at the bottom of the shaft sleeve. A lock rod spring (7) is provided in the groove at the bottom of the lock core in the base and the groove at the top of the lock rod. A raised ribbed platform (202) is provided on the outer diameter above the S groove of the lock core in the base. A dust cover spring (3) is provided on the outer diameter above the ribbed platform of the lock core in the base. The dust cover spring and the outer diameter of the other end of the lock core in the top hole of the base are sleeved. The bottom of the dust cover (1) is abutted against each other, and the waist-shaped grooves (101) on both sides of the dust cover are fixed to the top hole in the base through single-head knurled pins (8) driven into the outer diameter of both sides of the base; a sealing ring (6) is provided in the sealing groove at the outer diameter of the ring rib platform of the lock core, and a steel wire retaining ring (5) is provided on the inner diameter of the base above the ring rib platform of the lock core. The outer diameter of the steel wire retaining ring is snap-fastened to the inner diameter of the base, and the ring rib platform of the lock core is limited to the inner diameter of the steel wire retaining ring; the inner diameter shape of the top hole of the dust cover corresponds to the outer diameter shape of the end boss of the lock core. When the key is inserted into the hole at the top of the base and the dust cover is pressed down to move below the boss at the end of the lock core, the lock core is unlocked and the lock core is driven to rotate by the key.

2. The tension lock with dust cover self-locking and anti-vibration mechanism according to claim 1, characterized in that The inner diameter of the top opening of the dust cover (1) is in an inner octagonal shape, and the outer diameter of the corresponding end boss of the lock core (2) is in an outer octagonal shape. The outer octagonal outer diameter of the lock core fits with the inner octagonal inner diameter of the dust cover.

3. The tension lock with dust cover self-locking and anti-vibration mechanism according to claim 1, characterized in that The bottom of the dust cover where the dust cover (1) and the lock core (2) are fitted together forms an annular groove, and the dust cover spring (3) is inserted into the annular groove at the bottom of the dust cover at the outer diameter of the lock core inside the base (11).

4. The tension lock with dust cover self-locking and anti-vibration mechanism according to claim 1, characterized in that An inner serrated locking washer (13) and a waterproof gasket (12) are provided at the outer diameter thread above the large hexagonal nut (14) of the base (11).

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