A combination lock structure
By adopting a Y-shaped lock head structure and a design that combines male and female locks in the combination lock, the problems of mechanical combination locks being easily pried open and traditional locks being easily cracked are solved, achieving a more reliable, secure, and stable unlocking and locking process, and reducing costs.
Patent Information
- Application Number
- CN202522665835.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-16
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-16
AI Technical Summary
Existing mechanical combination locks have a simple structure and are easy to pry open, while traditional digital combination locks are easy to crack after the password is obtained. They lack more reliable, secure and stable lock designs.
It adopts a Y-shaped lock head structure, with the steel cable fixedly connected to the lock head through a connector. The lock head has female and male rows inside, and the combination lock wheel cooperates with the lock block. The combination control is achieved through the resistance spring and the limit pin, ensuring the reliability of unlocking and locking.
It improves the durability and security of the combination lock, reduces costs, and makes the unlocking and locking process smooth, enhancing both ease of use and security.
Smart Images
Figure CN224943583U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a combination lock, and more particularly to a combination lock structure. Background Technology
[0002] Combination locks are locks that open using combinations of numbers or symbols, mainly divided into two categories: mechanical combination locks and electronic combination locks. Mechanical combination locks unlock using a rotary dial that drives an internal disc or cam structure, while electronic combination locks rely on keypad input, and their password system is based on permutation and combination logic rather than completely random encryption. In 2025, the top ten mechanical combination lock brands included Master Locks, Yale, and Golden Point Atom, among others. Master Locks, founded in 1921, is a major global manufacturer of padlocks and portable security products. Traditional digital combination lock wheels have a relatively simple structure; by extending the steel cable, the combination can be continuously obtained through experimentation. However, there is a lack of a more reliable, secure, and stable product to meet the needs of users. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a combination lock structure.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a combination lock structure, including a steel cable and a lock head that are connected and fixed. The lock head has a Y-shaped structure. The two ends of the steel cable are inserted and fixed to the lock head. The ends of the steel cable are provided with fixed connectors. The lock head is provided with slots for the connectors to be inserted. The lock head has a cavity and female and male locking rings and a combination lock wheel placed in the cavity. The combination lock wheel is sleeved on the outside of the female locking ring. The male locking ring is inserted into the female locking ring and moves axially back and forth. The movement path of the male locking ring extends into the slot. The female locking ring has a slot in the radial direction. The male locking ring is provided with several locking blocks that extend out of the slot and cooperate with the combination lock wheel. The slot is provided with a locking gate, a push-out spring and a button. The locking gate and the button abut against each other. The button and the locking gate have an outward movement tendency due to the push-out spring. The locking gate is stopped and limited by moving to the male locking ring's movement path. The female locking ring is also sleeved with a spring that elastically abuts against the combination lock wheel. The female locking ring and the male locking ring are in a limited sliding cooperation.
[0005] The durability of the steel cable, or connector, connected to the lock cylinder is not as closely related to the outer casing as in traditional designs. Structurally, it can withstand loads of 140kg or 200kg. Furthermore, the outer casing does not need to be made of metal; plastic can be used, thus reducing costs. After unlocking, the pincushion extends a certain distance before being restricted, at which point the combination lock wheel cannot rotate, preventing the combination from being scrambled and affecting locking.
[0006] The female row is provided with a movable groove for the male row to be inserted, and one side wall of the movable groove has a guide plane.
[0007] The male ram is provided with a mounting groove and a damping spring placed in the mounting groove. The male ram has a tendency to move relative to the female ram through the damping spring.
[0008] The guide plane is provided with a limiting groove, and the male row is provided with a mounting hole and a limiting spring and a limiting pin placed in the mounting hole. The limiting pin is elastically engaged in the limiting groove by the limiting spring, and the limiting pin slides within the limiting groove.
[0009] The connector is provided with a locking hole, and the locking holes between the connectors overlap to allow the male connector to pass through and lock.
[0010] The beneficial effects of this utility model are as follows: The combination lock structure provided by this utility model achieves combination control through the cooperation of the combination lock wheel and the locking block on the male row. When the combination is correct, the locking block aligns with the combination lock wheel, and the male row can move along the axis of the female row under the push of the spring. Pressing the button can drive the lock gate to disengage from the male row's movement path, so that the male row can automatically unlock relative to the steel cable. Unlocking and locking are convenient and meet the design and usage requirements. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the combined structure of this utility model;
[0012] Figure 2 This is an exploded structural diagram of the present invention;
[0013] Figure 3 This is a schematic diagram of the lock-gate combination structure of this utility model;
[0014] Figure 4 This is a schematic diagram of the male row structure of this utility model;
[0015] Figure 5 This is a schematic diagram of the female ovary structure of this utility model;
[0016] Figure 6 This is a schematic diagram of the male row limiting structure of this utility model. Detailed Implementation
[0017] like Figures 1-6As shown, a combination lock structure includes a steel cable 1 and a lock head 2 connected and fixed. The lock head 2 has a Y-shaped structure. Both ends of the steel cable 1 are inserted and fixed to the lock head 2, and the ends of the steel cable 1 are provided with fixed connectors 3. The lock head 2 structure allows for bidirectional locking, facilitating multi-directional locking and unlocking operations, thus increasing flexibility and security. The steel cable 1 and lock head 2 are quickly assembled by inserting the connectors 3 into slots 12, and the structure is stable and reliable. The combination lock wheel 4 is sleeved on the outer periphery of the female lock 5. The engagement state of the lock block 6 and the combination lock wheel 4 is adjusted by rotation. When the correct password is entered, the lock block 6 completely disengages from the obstruction position, and the male lock 7 is axially ejected under the action of the resisting spring 10. This also includes pressing the button 8, which pushes the lock gate 9 to overcome the elastic force of the push-out spring 11 and retracts the lock gate 9 out of the movement path of the male lock 7. The cooperation between the lock block 6 and the combination lock wheel 4 is a mature technology, and it will not be elaborated or limited here.
[0018] The lock head 2 has a slot 12 for inserting a connector 3. The lock head 2 contains a cavity and a female locking pin 5, a male locking pin 7, and a combination lock wheel 4 placed within the cavity. The combination lock wheel 4 is sleeved on the outside of the female locking pin 5. The male locking pin 7 is inserted into the female locking pin 5 and moves axially back and forth. The movement path of the male locking pin 7 extends into the slot 12. The female locking pin 5 has a radial slot 13. The male locking pin 7 has several locking blocks 6 extending out of the slot 13 and engaging with the combination lock wheel 4. The slot 12 contains a locking gate 9, a push-out spring 11, and a button 8. The locking gate 9 and the button 8 abut against each other. The button 8 and the locking gate 9 have an outward tendency due to the push-out spring 11. The locking gate 9 is stopped and limited by its movement onto the male locking pin 7's movement path. A retaining spring 14 elastically abuts against the combination lock wheel 4, also sleeved on the outside of the female locking pin 5. The female locking pin 5 and the male locking pin 7 have a limited sliding fit. The male locking pin 7 is restricted in its movement, yet it moves axially relative to the female locking pin 5. The essence of locking and unlocking is whether the male connector 7 intervenes to prevent the connector 3 from being pulled out of the lock head 2. It should be noted that the locking gate 9, through the push-out spring 11, tends to push the button 8 outward, ensuring that the locking gate 9 always tends to block the movement path of the male connector 7, thus ensuring reliable locking. When the password is correct and the button 8 is pressed, the locking gate 9 retracts against the spring force of the push-out spring 11, and the male connector 7, under the action of the resistance spring 10, axially pops out, disengaging from the limit of the connector 3, achieving automatic unlocking. The entire process is smooth, with a compact structure, improving ease of use and security. Conversely, when the connector 3 is inserted into the slot 12 and the button 8 is pressed down, the male connector 7 is pushed into the slot 12, and at the same time, the male connector 7 also intervenes in the connector 3 to prevent it from coming out.
[0019] The female rack 5 has a movable groove 15 for inserting the male rack 7. One side wall of the movable groove 15 has a guide plane 16. The surface contact of the guide plane 16 is beneficial to the stability of the structure, making the relative sliding smoother and effectively reducing shaking and wear. The guide plane 16 extends axially and cooperates with the corresponding planar structure of the outer wall of the male rack 7 to achieve circumferential limiting and prevent rotational deviation. The male rack 7 has a mounting groove 17 and a stop spring 10 placed in the mounting groove 17. The male rack 7 has a tendency to move relative to the female rack 5 through the stop spring 10. The stop spring 10 is set to limit the depth of the male rack 7 entering the female rack 5 and to provide power for the male rack 7 to pop out. When the locking block 6 disengages from the engagement constraint of the combination lock wheel 4, the stop spring 10 releases its stored energy, pushing the male rack 7 to pop out axially, realizing automatic unlocking.
[0020] The guide plane 16 is provided with a limiting groove 18, and the male row 7 is provided with a mounting hole 19 and a limiting spring 20 and a limiting pin 21 placed in the mounting hole 19. The limiting pin 21 is elastically engaged in the limiting groove 18 by the limiting spring 20, and the limiting pin 21 slides within the limiting groove 18. In the radial direction, this makes the contact and relative movement between the male row 7 and the female row 5 more stable and reliable. At the same time, the design of the specific elastic force can also achieve staged positioning, which depends on the actual use needs. The connector 3 is provided with a locking hole 22, and the locking holes 22 between the connectors 3 overlap to allow the male row 7 to pass through and lock, which can save space and optimize the design in this embodiment.
[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. At the same time, the basic principles, main features, and advantages of this utility model have been shown and described above, which should be understood by those skilled in the art.
Claims
1. A combination lock structure, characterized in that, The device includes a connecting steel cable and a lock head. The lock head has a Y-shaped structure. Both ends of the steel cable are inserted and fixed to the lock head. The ends of the steel cable are provided with fixed connectors. The lock head has slots for the connectors to be inserted. The lock head has a cavity containing a female lock wheel, a male lock wheel, and a combination lock wheel. The combination lock wheel is sleeved on the outside of the female lock wheel. The male lock wheel is inserted into the female lock wheel and moves axially back and forth. The movement path of the male lock wheel extends into the slot. The female lock wheel has a radial slot. The male lock wheel has several locking blocks that extend out of the slot and cooperate with the combination lock wheel. The slot contains a locking gate, a push-out spring, and a button. The locking gate and the button abut against each other. The button and the locking gate have an outward tendency due to the push-out spring. The locking gate is stopped and limited by moving onto the male lock wheel's movement path. The female lock wheel is also sleeved with a spring that elastically abuts against the combination lock wheel. The female lock wheel and the male lock wheel have a limited sliding fit.
2. The combination lock structure as described in claim 1, characterized in that, The female row is provided with a movable groove for the male row to be inserted, and one side wall of the movable groove has a guide plane.
3. The combination lock structure as described in claim 2, characterized in that, The male ram is provided with a mounting groove and a damping spring placed in the mounting groove. The male ram has a tendency to move relative to the female ram through the damping spring.
4. The combination lock structure as described in claim 3, characterized in that, The guide plane is provided with a limiting groove, and the male row is provided with a mounting hole and a limiting spring and a limiting pin placed in the mounting hole. The limiting pin is elastically engaged in the limiting groove by the limiting spring, and the limiting pin slides within the limiting groove.
5. The combination lock structure as described in claim 1, characterized in that, The connector is provided with a locking hole, and the locking holes between the connectors overlap to allow the male connector to pass through and lock.