Coded lock

Abstract

According to the coded lock, the movable pressing lock catch piece is arranged in the shell and is matched with the coded wheel device for locking and unlocking, so that the coded lock achieves good balance in safety and convenience. The design of the pressing lock catch piece is ingenious, the pressing end of the pressing lock catch piece is convenient for a user to operate, and the lock catch end is tightly matched with the password wheel device, so that accurate control of password verification is realized. When a user correctly inputs a preset password, the password wheel device can rotate to a correct position according to a specific sequence, at the moment, the password wheel device does not abut against the lock catch end any more, and the lock catch piece is allowed to be pressed to move in the installation cavity. A user only needs to slightly press the pressing end, and unlocking of the lock can be achieved through a releasing mechanism of the lock catch end. By means of the design, the unlocking process is simplified, the safety of the coded lock is improved, and even if the coded lock is forcibly unlocked by external force, the coded lock is difficult to unlock due to blocking of the code wheel device 2.

Description

Technical Field

[0001] The utility model relates to the technical field of password locks, in particular to a password lock. Background Art

[0002] A combination lock is a lock that uses a mechanical number combination to open, without the need for a traditional key, thus avoiding the awkward situation of forgetting or losing the key. However, existing combination locks are inflexible, complex in structure, and difficult to change the combination. Summary of the Invention

[0003] In view of this, the utility model provides a password lock.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A combination lock comprises a shell, a combination wheel device and a push-lock fastener, wherein an installation cavity is formed in the shell, the combination wheel device is arranged in the installation cavity, and the push-lock fastener is movably arranged in the installation cavity, the push-lock fastener has a pressing end and a locking end, the pressing end extends out of the shell, and the locking end is arranged on one side of the combination wheel device. When the password of the combination wheel device is incorrect, one end of the combination wheel device presses against the locking end to limit the movement of the push-lock fastener in the installation cavity.

[0006] Preferably, the push lock has a main body and a guide part, the pressing end and the locking end are both arranged on the main body, the locking end is formed by protruding from one side of the main body located in the installation cavity and bending toward the password wheel device, and the locking end is connected to the password wheel device in a limiting manner.

[0007] Preferably, the password wheel device includes a mounting seat, a mounting box, a limiting plate and a password wheel assembly, the mounting box is detachably fixed to the mounting seat, an inclined protruding end is provided on the mounting seat, the inclined protruding end is inclined from the top of the mounting seat toward the top of the mounting box, the limiting plate is provided on the inclined protruding end, the limiting plate has a limiting end, the password wheel assembly is provided on the mounting seat, one end of the password wheel assembly presses the limiting plate, and under the pressure of the password wheel assembly, the limiting end of the limiting plate presses against the locking end.

[0008] Preferably, a gap is provided between the inclined protruding end and the mounting seat.

[0009] Preferably, the guide portion is a columnar structure arranged on the side of the main body away from the pressing end, a guide hole is provided on the inner wall of the installation cavity away from the pressing end, and the guide portion extends into the guide hole and is connected to the inner wall of the installation cavity.

[0010] Preferably, reinforcing ribs are also provided in the installation cavity, and the reinforcing ribs include guide reinforcing ribs and limiting reinforcing ribs. The guide reinforcing ribs are provided on one side of the installation cavity close to the pressing end, and a guide groove is provided on the guide reinforcing rib. The main body is connected to the guide reinforcing rib through the guide groove, and the limiting reinforcing rib is provided in the installation cavity.

[0011] Preferably, a fixing piece is provided on a side of the housing away from the pressing end, and a fixing hole is provided on the fixing piece.

[0012] The beneficial effect of the present invention is that by arranging a movable push-lock fastener in the housing and cooperating with the password wheel device for locking and unlocking, the password lock achieves a good balance between security and convenience. The push-lock fastener is exquisitely designed, and its pressing end is convenient for users to operate, while the locking end closely cooperates with the password wheel device to achieve precise control of password verification. When the user correctly enters the preset password, the password wheel device will rotate to the correct position in a specific order. At this time, the password wheel device no longer presses against the locking end, allowing the push-lock fastener to move in the installation cavity. The user only needs to gently press the pressing end to open the lock through the release mechanism of the locking end. This design not only simplifies the unlocking process, but also improves the security of the password lock, because even if an external force attempts to force it to open, it will be difficult to open due to the obstruction of the password wheel device 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Attachment Figure 1 Schematic diagram of the password lock structure;

[0015] Attachment Figure 2 This is a schematic diagram of the decomposition of the password lock structure;

[0016] Attachment Figure 3 Schematic diagram of the interior of the installation cavity. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] The utility model provides the following technical solutions:

[0020] As attached Figure 1-3 As shown, the present invention discloses a combination lock, comprising a housing 1, a combination wheel device 2, and a push-lock fastener 3. A mounting cavity 4 is formed in the housing 1, the combination wheel device 2 is disposed in the mounting cavity 4, and the push-lock fastener 3 is movably disposed in the mounting cavity 4. The push-lock fastener 3 has a pressing end 5 and a locking end 6. The pressing end 5 extends out of the housing 1, and the locking end 6 is disposed on one side of the combination wheel device 2. When the password of the combination wheel device 2 is incorrect, one end of the combination wheel device 2 abuts against the locking end 6 to limit the movement of the push-lock fastener 3 in the mounting cavity 4. Specifically, in this design, by disposing a movable push-lock fastener 3 in the housing 1 and cooperating with the combination wheel device 2 to lock and unlock, the combination lock achieves a good balance between security and convenience. The design of the push-lock fastener 3 is ingenious. Its pressing end 5 is easy for the user to operate, while the locking end 6 closely cooperates with the combination wheel device 2 to achieve precise control of password verification. When the user correctly enters the preset combination, the combination wheel assembly 2 rotates to the correct position according to a specific sequence. At this point, the combination wheel assembly 2 no longer presses against the locking end 6, allowing the push-lock member 3 to move within the mounting cavity 4. The user simply presses the pressing end 5 to release the locking end 6, unlocking the lock. This design not only simplifies the unlocking process but also improves the security of the combination lock, as even external force attempts to force the lock open, hindered by the obstruction of the combination wheel assembly 2.

[0021] Furthermore, the push-lock fastener 3 has a main body 7 and a guide portion 8. The pressing end 5 and the locking end 6 are both disposed on the main body 7. The locking end 6 is formed by protruding from one side of the main body 7 located within the mounting cavity 4 and bending toward the code wheel device 2. The locking end 6 is in contact with the code wheel device 2 in a limited manner. Specifically, in this embodiment, the locking end 6 and the pressing end 5 are both disposed on the main body 7. This structural design not only ensures the overall stability of the push-lock fastener 3, but also makes operation more intuitive and simple. The guide portion 8 is disposed on one side of the main body 7 and cooperates with the structure within the mounting cavity 4 to ensure that the push-lock fastener 3 can maintain a stable trajectory during movement, reducing the risk of inconvenience or damage caused by deviation or shaking.

[0022] In other embodiments, the locking end 6 and the main body 7 are split structures, the locking end 7 is arranged on a locking block (not shown), and the locking block and the main body are detachably connected, and the detachable connection method is a screw connection.

[0023] Furthermore, the password wheel device 2 includes a mounting seat 9, a mounting box 10, a limiting plate 11 and a password wheel assembly. The mounting box 10 is detachably fixed to the mounting seat 9. The limiting plate 11 and the password wheel assembly are both arranged in the mounting box 10. An inclined protruding end 12 is provided on the mounting seat 9. The inclined protruding end 12 is inclined from the top of the mounting seat 9 toward the top side of the mounting box 10. The limiting plate 11 is provided on the inclined protruding end 12. The limiting plate 11 has a limiting end 13. The password wheel assembly is provided on the mounting seat 9. One end of the password wheel assembly presses the limiting plate 11. Under the pressure of the password wheel assembly, the limiting end 13 of the limiting plate 11 presses against the locking end 6. Specifically, in this embodiment, the code wheel assembly is a common code wheel structure in the prior art, consisting of multiple code wheels 14 and a rotating shaft 15. The code wheels 14 are mounted on the rotating shaft 15, and each code wheel 14 is engraved with numbers or letters. The user needs to rotate these code wheels 14 according to the preset code sequence to unlock the device. The code wheels 14 are interconnected by a precise mechanical structure, ensuring that each code wheel 14 can accurately correspond to the preset code position when rotating. The correct password is entered by rotating the code wheel 14, so that the code wheel 14 no longer presses the limit plate 11. When the password is entered correctly, the limit plate 11 loses the pressure of the code wheel assembly, and its limit end 13 disengages from the lock end 6, so that the movement of the pressing lock member 3 is no longer restricted.

[0024] Furthermore, a gap 16 is provided between the inclined protruding end 12 and the mounting seat 9. Specifically, in this embodiment, the provision of the gap 16 ensures that the inclined protruding end 12 has a certain amount of space to move when subjected to external force or vibration, thereby effectively preventing stress concentration and damage caused by a rigid connection, and also improving the flexibility and durability of the entire structure.

[0025] Furthermore, the guide portion 8 is a columnar structure disposed on a side of the main body 7 away from the pressing end 5. A guide hole 17 is defined on the inner wall of the mounting cavity 4 away from the pressing end 5. The guide portion 8 extends into the guide hole 17 and connects with the inner wall of the mounting cavity 4. Specifically, in this embodiment, a precise fit is employed between the guide portion 8 and the guide hole 17 to ensure smooth sliding of the guide portion 8 within the guide hole 17, while reducing friction and wear and providing guidance and limitation for the movement of the push lock member 3.

[0026] Furthermore, reinforcing ribs are provided in the installation cavity 4, comprising guide reinforcing ribs 18 and position-limiting reinforcing ribs 19. The guide reinforcing ribs 18 are provided on a side of the installation cavity 4 near the pressing end 5. A guide groove 20 is defined in the guide reinforcing rib 18, through which the main body 7 passes to connect with the guide reinforcing rib 18. The position-limiting reinforcing rib 19 is provided in the installation cavity 4. Specifically, in this embodiment, the provision of the guide reinforcing ribs 18 and the position-limiting reinforcing ribs 19 can limit the radial position of the push-lock fastener 3 in the installation cavity 4, preventing the push-lock fastener 3 from shaking or deflecting when subjected to external forces, thereby improving its stability and reliability.

[0027] Furthermore, a fixing member 21 is provided on a side of the housing 1 away from the pressing end 5, and a fixing hole 22 is provided on the fixing member 21. Specifically, in this embodiment, the fixing member 21 can be provided to fix the combination lock to an external carrier, and the external carrier can be provided with a snap structure to cooperate with the fixing hole 22 on the fixing member 21.

[0028] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combination lock, characterized by: The invention comprises a shell, a password wheel device and a push-lock fastener, wherein a mounting cavity is formed in the shell, the password wheel device is arranged in the mounting cavity, the push-lock fastener is movably arranged in the mounting cavity, the push-lock fastener has a pressing end and a locking end, the pressing end extends out of the shell, and the locking end is arranged on one side of the password wheel device. When the password of the password wheel device is incorrect, one end of the password wheel device presses against the locking end to limit the movement of the push-lock fastener in the mounting cavity.

2. The combination lock according to claim 1, characterized in that: The press lock component has a main body and a guide part. The pressing end and the locking end are both arranged on the main body. The locking end protrudes from one side of the main body located in the installation cavity and is bent toward the password wheel device. The locking end is connected to the password wheel device in a limiting manner.

3. The combination lock according to claim 2, characterized in that: The password wheel device includes a mounting seat, a mounting box, a limiting piece and a password wheel assembly. The mounting box is detachably fixed to the mounting seat. An inclined protruding end is provided on the mounting seat. The inclined protruding end is inclined from the top of the mounting seat toward the top of the mounting box. The limiting piece is provided on the inclined protruding end. The limiting piece has a limiting end. The password wheel assembly is provided on the mounting seat. One end of the password wheel assembly presses the limiting piece. Under the pressure of the password wheel assembly, the limiting end of the limiting piece presses against the locking end.

4. The combination lock according to claim 3, characterized in that: A gap is set between the inclined protruding end and the mounting seat.

5. The combination lock according to claim 2, characterized in that: The guide portion is a columnar structure and is arranged on the side of the main body away from the pressing end. A guide hole is provided on the inner wall of the installation cavity away from the pressing end. The guide portion extends into the guide hole and is connected to the inner wall of the installation cavity.

6. The combination lock according to claim 2, characterized in that: Reinforcing ribs are also provided in the installation cavity, and the reinforcing ribs include guide reinforcing ribs and limiting reinforcing ribs. The guide reinforcing ribs are provided on a side of the installation cavity close to the pressing end, and a guide groove is provided on the guide reinforcing ribs. The main body is connected to the guide reinforcing ribs through the guide groove, and the limiting reinforcing ribs are provided on the inner walls on both sides opposite to each other on the side of the installation cavity away from the pressing end.

7. The combination lock according to claim 1, characterized in that: A fixing piece is provided on a side of the shell away from the pressing end, and a fixing hole is provided on the fixing piece.

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