Multi-pronged spring washer and cartridge mechanical combination lock

Abstract

The utility model discloses a kind of multi-paw spring washers, including washer body, at least two adjusting leaves are equipped on the washer body, and each adjusting leaf is set to downward inclination. The utility model further discloses a kind of box type mechanical combination lock, which includes lock box and the multi-paw spring washer, the shaft column of installing the washer body is equipped in the lock box, the inner wall surface of the lock box is equipped with the adjusting lock slot or adjusting lock block corresponding to the adjusting leaf, the adjusting lock slot or adjusting lock block is set to upward inclination, the inner wall surface of the lock box is also equipped with several positioning grooves or positioning platforms corresponding to the positioning buckle part. The design is simple in structure, convenient to use, the traditional spring washer is improved into liftable multi-paw spring washer, the adjusting mode of spring washer and lock box is changed, the precise, wide range, flexible adjustment of the tightness of wheel disc is realized, so as to improve the use performance and security of combination lock.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a multi-claw spring washer and its application in a box-type mechanical combination lock. Background Technology

[0002] Box-type mechanical combination locks are widely used. Currently, the structure of box-type mechanical combination locks on the market generally consists of three parts: a turntable, a lead screw, and a lock body. Multiple wheel discs are set inside the lock body. Each disc achieves the combination of codes through the driving point and the driven point. When the notches of all wheel discs are aligned, the nut will hook the lock hook. The turntable rotates, which drives the nut through the lead screw. The nut then drives the lock hook, and finally the lock hook drives the lock tongue to move, realizing the opening and closing of the lock.

[0003] However, current box-type mechanical combination locks all use a spring washer at the bottom of the wheel disc to adjust the tension. Ordinary spring washers have limitations in their adjustment method for box-type mechanical combination locks. Firstly, ordinary spring washers gradually lose elasticity over time due to repeated pressure and friction, resulting in unstable and inaccurate adjustment of the wheel disc tension. Secondly, once the spring washer is installed and fixed, the elastic force it provides is relatively fixed, and the range of adjustment is very limited, making it difficult to flexibly and conveniently adjust according to actual usage needs, and unable to meet diverse user scenarios. For example, in some situations where the combination lock has high security requirements, a tighter wheel disc is needed to prevent the combination from being easily cracked; while in some everyday usage scenarios, a slightly looser wheel disc can make operation smoother. Traditional spring washer structures cannot accommodate these different needs, and can only be adjusted by changing the thickness or increasing or decreasing the number of washers. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a multi-claw spring washer and its application in a box-type mechanical combination lock. By improving the spring washer and its assembly structure, it solves the problems of poor stability, small adjustment range, and insufficient flexibility inherent in traditional spring washer adjustment methods. This enables precise, wide-range, and flexible adjustment of the wheel disc tension, thereby improving the performance and security of the combination lock.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a multi-claw spring washer, including a washer body, wherein the washer body is provided with at least two adjusting blades, each of which is inclined downwards and can raise or lower the height of the spring by cooperating with mounting slots at different heights of the combination lock box.

[0006] Furthermore, the gasket body is annular, and the adjusting blades are evenly distributed circumferentially on the gasket body.

[0007] Furthermore, the number of adjustment sheets is preferably three or four.

[0008] Furthermore, the adjustment flap is disposed on the outer periphery of the gasket body.

[0009] Furthermore, the gasket body is also provided with a positioning flap, and the positioning flap has a positioning latch. The positioning latch is a downward-facing "V"-shaped bend or a single-tooth-shaped protrusion, which cooperates with positioning grooves located at different positions on the combination lock box to fix the gasket body.

[0010] Furthermore, the positioning plate is provided with a slot, hole, or lever for easy adjustment of the position of the spring. The lever may be tilted upwards, allowing the user to insert a lever into the slot or hole to move the spring, or to directly use their fingernail to press the lever to adjust the position of the spring.

[0011] This solution also discloses a box-type mechanical combination lock, including a multi-claw spring washer and a lock box as described above, as well as lock body components such as a wheel disc, retaining spring, round nut, lock hook, and lock tongue installed in the lock box. The lock box has a shaft for installing the washer body. The inner wall of the lock box has an adjustment lock groove or adjustment lock block corresponding to the adjustment leaf. The adjustment lock groove or adjustment lock block is inclined upward. The inner wall of the lock box also has several positioning grooves or positioning platforms corresponding to the positioning buckle. When the positioning buckle is engaged in different positioning grooves or positioning platforms, the adjustment leaf cooperates with the different height positions of the adjustment lock groove or adjustment lock block, thereby adjusting the height of the multi-claw spring washer in the lock box and realizing the adjustment of the tightness of the wheel disc stacked on the spring washer.

[0012] Furthermore, the adjusting lock groove or adjusting lock block is fan-shaped and evenly distributed around the outside of the shaft column.

[0013] Furthermore, all of the positioning slots or positioning platforms are arranged in an arc shape with the shaft column as the center.

[0014] Furthermore, the inner wall of the lock box is also provided with a limit positioning block that blocks the positioning leaf to limit the angle position of the spring washer within the lock box.

[0015] The beneficial effects of this utility model are: the design is simple in structure and easy to use. It improves the traditional spring washer into a liftable multi-claw spring washer, changes the adjustment method of the spring washer and the lock box, and solves the problems of poor stability, small adjustment range and insufficient flexibility of the traditional spring washer adjustment method. It realizes precise, wide-range and flexible adjustment of the tightness of the wheel disc, thereby improving the performance and security of the combination lock. Attached Figure Description

[0016] Figure 1 This is a front view of a multi-claw spring washer structure according to the present invention; Figure 2 This is a side view of a multi-claw spring washer structure according to the present invention; Figure 3 This is a perspective view of a multi-claw spring washer structure according to the present invention; Figure 4 This is a front view of the lock box structure of this utility model; Figure 5 This is a perspective view of the lock box structure of this utility model. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] A multi-claw spring washer, such as Figures 1-3 As shown, the device includes a gasket body 1, which is annular in shape. The gasket body 1 has at least two adjusting flaps 11. In this embodiment, the adjusting flaps 11 are manufactured using stamping and bending processes. Preferably, there are three adjusting flaps 11, which are evenly distributed circumferentially around the outer periphery of the gasket body 1. The inner diameter of the gasket body 1 is preferably 16 mm, and the outer diameter is preferably 20 mm. The outer diameter of the adjusting flaps 11 is preferably 32 mm, and the width of each adjusting flap 11 is preferably 2 mm-3 mm. One end (the first end) of each adjusting flap 11 is connected to the gasket body 1, and the other end (the last end) is inclined downwards counterclockwise. The last end of the adjusting flap 11 has a crease and is parallel to the bottom surface of the gasket body 1. In other embodiments, the adjusting flaps 11 can also be welded to the bottom of the gasket body 1.

[0019] Furthermore, the gasket body 1 is also provided with a positioning leaf 12, which is connected to one of the adjustment leaf 11. The outer diameter of the positioning leaf 12 is preferably 55mm, and the width of the positioning leaf 12 is preferably 1.5mm-2.5mm. The positioning leaf 12 is provided with a positioning latch 121. The positioning latch 121 is a downwardly oriented "V"-shaped bend or a single-tooth-shaped protrusion, used to fix the gasket body 1.

[0020] Furthermore, the positioning plate 12 is provided with a slot 13, an opening, or a lever for conveniently adjusting the position of the spring. The lever may be tilted upwards, allowing the user to insert a lever into the slot 13 or opening to move the spring, or to directly use a fingernail to press the lever to adjust the position of the spring. The positioning plate 12 is also provided with a limit fastener 14 for conveniently fixing the gasket body 1.

[0021] Furthermore, the gasket body 1, the adjusting blade 11, and the positioning blade 12 are made of one piece of metal and then formed by stamping and bending processes. The thickness of the gasket body 1 is preferably 0.5mm-1mm, the downward tilting depth of the adjusting blade 11 is preferably 1.8mm-2mm, and the distance from the bottom of the positioning buckle 121 to the surface of the gasket body 1 is preferably 1.92mm.

[0022] This solution also discloses a box-type mechanical combination lock, including the multi-claw spring washer and lock box 2 described above. The lock box 2 also houses lock body components such as a wheel disc, retaining spring, round nut, lock hook, and lock tongue. The wheel disc, retaining spring, round nut, lock hook, and lock tongue are existing structures and will not be described in detail here. Figure 4 and Figure 5 As shown, the lock box 2 is provided with a shaft 21 for mounting the gasket body 1. The inner wall of the lock box 2 is provided with a downwardly recessed adjustment lock groove 22 corresponding to the adjustment leaf 11 (in other embodiments, an upwardly protruding adjustment lock block can also be used instead). The adjustment lock groove 22 (or adjustment lock block) is inclined upward counterclockwise. The inner wall of the lock box 2 is also provided with a number of protruding positioning platforms 23 corresponding to the positioning buckle part 12 (in other embodiments, a recessed positioning groove can also be used). When the positioning buckle part 121 is engaged with different positioning platforms 23 (or positioning grooves), the adjustment leaf 11 and the adjustment lock groove 22 (or adjustment lock block) are matched at different height positions, thereby adjusting the height of the multi-claw spring gasket in the lock box 2, and realizing the adjustment of the tightness of the wheel disc stacked on the multi-claw spring gasket. To prevent the positioning latch 121 from sliding out of the adjustment lock groove 22 (or the adjustment lock block), a pressure plate or locking plate can be provided in the lock box 2 to press or lock the position of the positioning leaf 12. Alternatively, the positioning latch 121 can be prevented from sliding out of the adjustment lock groove 22 by optimizing the angle of the positioning latch 121.

[0023] Furthermore, the adjusting lock groove 22 (or adjusting lock block) is fan-shaped and is evenly distributed around the outside of the shaft post 21.

[0024] Furthermore, all the positioning platforms 23 (or positioning grooves) are arranged in an arc shape with the shaft column 21 as the center, forming an arc-shaped toothed band.

[0025] Furthermore, the inner wall of the lock box 2 is also provided with a limit positioning block 24 that cooperates with the limit buckle 14 to limit the angle position of the spring washer within the lock box.

[0026] Furthermore, the inner wall surface of the lock box 2 is also provided with markings 25 indicating the degree of adjustment.

[0027] Installation and adjustment process of this solution: First, install the multi-claw spring washer onto the shaft 21 inside the lock housing 2, ensuring that the adjusting blade 11 corresponds to the adjusting lock groove 22, and the positioning blade 12 corresponds to the positioning platform 23, allowing it to rotate freely along the arc-shaped serrated positioning platform 23. Then, sequentially install four copper wheel discs (the number of discs can be adjusted as needed) onto the shaft 21 and stack them on top of the multi-claw spring washer. Pay attention to the installation order and orientation of the wheel discs to ensure the normal function of the combination lock. After installing the wheel discs, use retaining rings to secure them and prevent them from falling off. Finally, install the round nut, then install the latch and lock hook, making them a single unit with the wheel discs. The combination lock is opened and closed by extending and retracting the latch.

[0028] During use, the tension of the copper plates can be adjusted according to actual needs. For example, to improve the security of the combination lock and make the wheel discs fit more tightly, rotate the multi-claw spring washer clockwise. This will cause the multi-claw spring washer to lift the four wheel discs, increasing the pressure on the wheel discs and tightening them. Conversely, to make the operation smoother and loosen the wheel discs appropriately, rotate the multi-claw spring washer counterclockwise. This will cause the adjusting blade 11 to drop, reducing the pressure on the wheel discs.

[0029] This solution offers precise and flexible adjustment. Compared to the fixed elasticity adjustment of traditional spring washers, the adjustable multi-claw spring washer allows for flexible adjustment of the pressure on the wheel disc by moving the positioning plate 12 in conjunction with the arc-shaped positioning platform 23, achieving precise control of the wheel disc tension and meeting the requirements of combination locks in different usage scenarios. This solution boasts high stability. The multi-claw spring washer structure is relatively stable, with precise positioning and convenient and quick operation. Furthermore, it is less susceptible to interference from external factors during adjustment, exhibiting superior adjustment stability compared to older spring washers that are prone to changes in elasticity, maintaining stable tension of the copper plate over a long period. This solution also provides strong security. By precisely adjusting the wheel disc tension, the combination lock maintains optimal security performance in various usage scenarios. For example, in high-security scenarios, tightening the wheel disc effectively prevents the combination from being cracked, improving the overall security of the combination lock.

[0030] The above description is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the scope of the present utility model patent application and the description of the utility model shall still fall within the scope of the present utility model patent.

Claims

1. A multi-claw spring washer, comprising a washer body, characterized in that, The gasket body is provided with a positioning plate and at least two adjustment plates. Each adjustment plate is inclined downwards. The positioning plate is provided with a positioning latch, which is a downwardly positioned "V"-shaped bend or a single-tooth-shaped protrusion.

2. A multi-claw spring washer according to claim 1, characterized in that, The gasket body is annular, and the adjusting blades are evenly distributed around the gasket body.

3. A multi-claw spring washer according to claim 1, characterized in that, The number of adjustment sheets is three or four.

4. A multi-claw spring washer according to claim 1, characterized in that, The adjustment flaps are disposed on the outer periphery of the pad body.

5. A multi-claw spring washer according to claim 1, characterized in that, The positioning leaf is provided with a slot, opening, or lever for easy to move.

6. A box-type mechanical combination lock, characterized in that, The invention includes a lock box and a multi-claw spring washer as described in any one of claims 1-5. The lock box has a shaft for mounting the washer body inside. The inner wall of the lock box has an adjustment lock groove or adjustment lock block corresponding to the adjustment leaf. The adjustment lock groove or adjustment lock block is inclined upward. The inner wall of the lock box also has a plurality of positioning grooves or positioning platforms corresponding to the positioning buckle.

7. A box-type mechanical combination lock according to claim 6, characterized in that, The adjusting lock grooves or adjusting lock blocks are fan-shaped and evenly distributed around the outside of the shaft column; all the positioning grooves or positioning platforms are densely distributed in an arc shape with the shaft column as the center.

8. A box-type mechanical combination lock according to claim 6, characterized in that, The inner wall of the lock box is also provided with a limit positioning block to block the positioning leaf.

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