A type of code-trace padlock

Abstract

This utility model relates to the field of lock technology, specifically to a code-finding padlock, comprising a lock shell, a locking cord, a combination assembly, and a lock cylinder assembly. The lock shell includes a first shell and a second shell. The top of the first shell has a keyhole for inserting the end of the locking cord. The combination assembly includes a center rod, multiple number wheels, and multiple inner sleeves. A code-finding indicator is provided on the part of each inner sleeve protruding from the number wheels. The first shell has a viewing hole. The lock cylinder assembly is mounted on the second shell, and the second shell and the first shell are locked together, blocking the viewing hole. When a code-finding operation is required, after inserting the correct key into the lock cylinder assembly, the second shell and the lock cylinder assembly within it can detach from the first shell, thus exposing the viewing hole. The user can see the inner sleeves through the viewing hole. When the number wheels and inner sleeves are rotated to the position corresponding to the code-finding indicator in the viewing hole, the number wheel is in the correct combination position, achieving the code-finding purpose. Compared with existing technologies, this design is convenient to operate, simple in structure, and easy to manufacture.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a code-finding padlock. Background Technology

[0002] The combination lock in the prior art includes a lock shell and a combination lock cylinder. The combination lock cylinder is located inside the lock shell and has a bolt, multiple lock sleeves and multiple combination dials. The lock sleeves are fitted outside the bolt, and the combination dials are respectively fitted outside the lock sleeves and can drive the corresponding lock sleeves to rotate together.

[0003] When the combination lock is locked, the bolt rests against the underside of the strike plate that has not been rotated to the correct angle, preventing it from being pulled upwards to achieve the locking purpose. When the user turns the combination dial, causing the strike plate to rotate to the correct unlocking position, the combination lock is unlocked. In the unlocked state, all the notches on the strike plates are aligned in a straight line and aligned with the corresponding protrusions on the bolt. The user can then pull the bolt upwards through the notches on the strike plates to unlock the lock.

[0004] However, the aforementioned combination locks do not provide a mechanism for users to find the correct password. In other words, when users forget the passwords they set, they must test each password one by one or directly break the combination lock.

[0005] Later, a combination lock was disclosed in Chinese patent document CN206448639U, which includes a lock shell, a key cylinder, a combination cylinder, a bolt, and a code-finding component. The key cylinder provides users with an alternative unlocking method besides the combination lock, preventing users from being unable to open the lock if they forget the combination. In addition, a method for retrieving the combination lock was designed. Since the key cylinder is connected to the code-finding push plate of the code-finding component through its upper push seat, when the user unlocks the lock with the key, it will drive the code-finding push plate to move, and cause the push rod in the code-finding component to lock the combination dial of the combination lock cylinder. That is, in the unlocked state, the user can retrieve the previously set combination lock simply by turning the combination dial of the combination lock cylinder to a position where it cannot be turned any further.

[0006] Existing combination locks capable of code finding all have a code finding component installed inside the lock. After the lock core is unlocked, the code finding component pushes against the inner sleeve of the combination lock, resulting in a complex structure and high cost. Utility Model Content

[0007] In view of the above-mentioned technical problems, the present invention provides a code-finding padlock.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A code-finding padlock is provided, comprising a lock shell, a lock cord, a combination component, and a lock cylinder component. The lock shell includes a first housing and a second housing, and the top of the first housing has a key hole for inserting the end of the lock cord. The password component is installed in the first housing, which includes a central rod, multiple digital wheels and multiple inner sleeves. The multiple inner sleeves are coaxially installed on the inner side of the multiple digital wheels in a corresponding manner, and the inner sleeves rotate together with the corresponding digital wheels. The digital wheels partially extend out of the first housing. The central rod coaxially passes through the multiple inner sleeves. The central rod is longitudinally positioned and its end is provided with a button that extends out of the first housing. When the password is incorrect, the axial movement of the center rod is restricted by the inner sleeve, and the end of the lock rope inserted into the keyhole is stuck; only when the password is correct can the center rod move axially, and the lock rope end is released by pressing the button with external force. The part of the inner sleeve that protrudes from the number wheel is provided with a code-finding mark, and the first housing is provided with an inspection hole. When the number wheel and the inner sleeve are rotated to the correct code, the code-finding mark aligns with the inspection hole. The lock cylinder assembly is installed in the second housing. The second housing is locked to the first housing to block the inspection hole. The second housing can only be separated from the first housing after the key is unlocked.

[0009] Specifically, the lock cylinder assembly includes a lock core and a lock pin. The lock core is installed in the second housing and can rotate after the correct key is inserted. The lock pin is fixed to the top of the lock core, and a limiting protrusion is provided on the outer side of the lock pin. When the lock core is locked, the limiting protrusion is inserted into the inspection hole, causing the first housing and the second housing to lock together.

[0010] Specifically, the opening of the inspection hole is equipped with an arc-shaped guide wall.

[0011] Specifically, the second housing includes an inner housing and a U-shaped outer housing. The inner housing is fixed to the inside of the outer housing, the lock cylinder assembly is installed in the inner housing, and the outer housing is connected to the first housing.

[0012] Specifically, the first housing is provided with a guide groove, and the outer housing is provided with a guide rib. When the outer housing is longitudinally embedded in the first housing, the guide rib slides directionally along the guide groove.

[0013] Specifically, the limiting protrusion is embedded in the inspection hole to longitudinally clamp the first housing and the second housing; the bottom of the first housing is provided with a positioning post, and the bottom of the second housing is provided with a positioning hole. The positioning post is embedded in the positioning hole to laterally clamp the first housing and the second housing.

[0014] Specifically, the side of the first housing is provided with a clearance notch, and the inspection hole is located on the side wall of the clearance notch. When mated, the inner housing is embedded in the clearance notch.

[0015] Specifically, the outer side of the central rod is provided with multiple blocking protrusions arranged at intervals along the axial direction, and the inner side of each inner sleeve is provided with a relief groove. Only after the number wheel and the inner sleeve rotate to the correct code, the multiple blocking protrusions are aligned with the corresponding relief grooves, allowing the central rod to move axially; in this state, the code search mark is aligned with the inspection hole.

[0016] Specifically, the tracking marks and clearance slots of each inner sleeve are arranged symmetrically relative to the inner sleeve axis. When multiple tracking marks are aligned with the inspection hole, multiple blocking protrusions are aligned with multiple clearance slots.

[0017] Specifically, the first housing is equipped with a locking pin. When the combination lock is engaged, the part of the button located inside the first housing abuts against the locking pin, and the locking pin secures the end of the lock rope. When the combination unlocks, the button is pressed, thereby releasing the locking pin from restricting the end of the lock rope.

[0018] The beneficial effects of this utility model are: This utility model discloses a code-finding padlock. When a code is needed, after inserting the correct key into the lock cylinder assembly, the second housing and the lock cylinder assembly inside it can detach from the first housing, thus exposing the inspection hole. The user can see the inner sleeve through the inspection hole. When the number wheel and the inner sleeve are rotated until the code-finding mark corresponds to the inspection hole, the number wheel is in the correct code position, achieving the code-finding purpose. Compared with the prior art, it is convenient to operate, simple in structure, and easy to manufacture. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a code-finding padlock in one of the embodiments.

[0021] Figure 2 This is an exploded view of a traceable combination padlock as described in the embodiment.

[0022] Figure 3 This is a cross-sectional view of a code-finding padlock in the embodiment, with some segments of the lock rope omitted.

[0023] Figure 4 This is a schematic diagram of a code-finding padlock after the second housing has separated following key unlocking, as shown in the embodiment.

[0024] Figure label: Lock case 1; First housing 11, lock hole 111, inspection hole 112, guide wall 113, guide groove 114, positioning post 115, clearance notch 116; Second shell 12, inner shell 121, outer shell 122, guide rib 123, positioning hole 124; Lock rope 2; Password component 3, center rod 31, blocking protrusion 311, number wheel 32, inner sleeve 33, clearance groove 331, code search mark 332; Lock cylinder assembly 4, lock core 41, lock pin 42, limit protrusion 421; Button 5, latch 6. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] This embodiment presents a code-finding padlock, such as... Figures 1 to 4 As shown, the lock includes a lock housing 1, a lock rope 2, a combination key assembly 3, and a lock cylinder assembly 4. The lock housing 1 includes a first housing 11 and a second housing 12. The top of the first housing 11 is provided with a lock hole 111 for inserting the end of the lock rope 2. In the figure, one end of the lock rope 2 is fixed to the first housing 11 and cannot be separated, while the other end of the lock rope 2 can be separated after unlocking.

[0027] The password assembly 3 is installed in the first housing 11 and includes a central rod 31, multiple number wheels 32, and multiple inner sleeves 33. The inner sleeves 33 are coaxially mounted inside the corresponding number wheels 32, and rotate together with the corresponding number wheels 32. A portion of the number wheels 32 extends beyond the first housing 11. The central rod 31 coaxially passes through the inner sleeves 33. The central rod 31 is longitudinally positioned, and its end has a button 5 extending out of the top of the first housing 11. When the password is incorrect, the axial movement of the central rod 31 is restricted by the inner sleeves 33, the button 5 cannot be pressed, and the end of the locking rope 2 inserted into the lock hole 111 is locked. Once the password is correct, the central rod 31 can move axially, and external force presses the button 5 to release the end of the locking rope 2.

[0028] Specifically, the first housing 11 is provided with a locking pin 6. When the combination lock is engaged, the part of the button 5 located inside the first housing 11 abuts against the locking pin 6, and the locking pin 6 locks the end of the locking rope 2, preventing the end of the locking rope 2 from detaching. When the combination unlocks, the button 5 is pressed to create space for the locking pin 6 to move, thereby releasing the locking pin 6 from restricting the end of the locking rope 2.

[0029] Specifically, the outer side of the center rod 31 is provided with multiple blocking protrusions 311 arranged at intervals along the axial direction, and the inner side of each inner sleeve 33 is provided with a relief groove 331. Only after all the number wheels 32 and inner sleeves 33 have turned to the correct password, the multiple blocking protrusions 311 are aligned with the corresponding relief grooves 331, allowing the center rod 31 to move axially.

[0030] Each inner sleeve 33 has a code-finding mark 332 extending beyond the number wheel 32. The first housing 11 has a viewing hole 112. When the number wheel 32 and the inner sleeve 33 rotate to the correct code, the code-finding mark 332 aligns with the viewing hole 112. The four number wheels 32 in the diagram correspond to four inner sleeves 33, therefore four viewing holes 112 are needed to allow each inner sleeve 33's code-finding mark 332 to be visible. The code-finding mark 332 here is a slotted structure; in practice, it can be replaced with a raised, colored, or patterned mark, etc., to identify when the inner sleeve 33 has rotated to the expected position.

[0031] Specifically, the code mark 332 and the clearance groove 331 of each inner sleeve 33 are arranged symmetrically with respect to the axis of the inner sleeve 33. When multiple code marks 332 are aligned with the inspection hole 112, multiple blocking protrusions 311 are aligned with multiple clearance grooves 331.

[0032] In this embodiment, the lock cylinder assembly 4 is installed on the second housing 12. The second housing 12 is locked to the first housing 11, blocking the inspection hole 112. The second housing 12 can only be separated from the first housing 11 after the key is unlocked. Specifically, the lock cylinder assembly 4 includes a lock core 41 and a lock pin 42. The lock core 41 is installed on the second housing 12 and can rotate after the correct key is inserted. The lock pin 42 is fixed to the top of the lock core 41. A limiting protrusion 421 is provided on the outer side of the lock pin 42. When the lock core 41 is locked, the limiting protrusion 421 is inserted into the inspection hole 112, causing the first housing 11 and the second housing 12 to lock together.

[0033] Specifically, the opening of the inspection hole 112 is provided with an arc-shaped guide wall 113, which allows the limiting protrusion 421 to enter and exit the inspection hole 112 more smoothly.

[0034] Specifically, the second housing 12 includes an inner housing 121 and a U-shaped outer housing 122. The inner housing 121 is fixed to the inside of the outer housing 122, the lock cylinder assembly 4 is installed in the inner housing 121, and the outer housing 122 is connected to the first housing 11.

[0035] Specifically, the first housing 11 is provided with guide grooves 114 on the front and rear sides, and the outer housing 122 is provided with guide ribs 123 on the front and rear inner walls. When the outer housing 122 is longitudinally embedded in the first housing 11, the guide ribs 123 slide directionally along the guide grooves 114.

[0036] Specifically, the limiting protrusion 421 is embedded in the inspection hole 112 to longitudinally clamp the first housing 11 and the second housing 12; the bottom of the first housing 11 is provided with a positioning post 115, and the bottom of the second housing 12 is provided with a positioning hole 124. The positioning post 115 is embedded in the positioning hole 124 to laterally clamp the first housing 11 and the second housing 12.

[0037] Specifically, the side of the first housing 11 is provided with a clearance notch 116, and the inspection hole 112 is located on the side wall of the clearance notch 116. When mated, the inner housing 121 is embedded in the clearance notch 116.

[0038] In the description of this utility model, it is obvious that the described embodiments are only a part of the embodiments of this utility model, and not all of them. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] In the description of this utility model, it should be noted that the terms "middle," "upper," "lower," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used 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. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A codeable combination padlock, characterized by: It includes a lock shell (1), a lock cord (2), a combination component (3) and a lock cylinder component (4). The lock shell (1) includes a first housing (11) and a second housing (12). The top of the first housing (11) is provided with a lock hole (111) for inserting the end of the lock cord (2). The password component (3) is installed on the first housing (11), which includes a central rod (31), multiple digital wheels (32) and multiple inner sleeves (33). The multiple inner sleeves (33) are coaxially installed on the inner side of the multiple digital wheels (32) in a corresponding manner, and the inner sleeves (33) rotate together with the corresponding digital wheels (32). The digital wheels (32) partially extend out of the first housing (11). The central rod (31) passes through the multiple inner sleeves (33) coaxially. The central rod (31) is longitudinally arranged and its end is provided with a button (5) extending out of the first housing (11). When the password is wrong, the axial movement of the center rod (31) is restricted by the inner sleeve (33), and the end of the lock rope (2) inserted into the lock hole (111) is stuck; after the password is correct, the center rod (31) can move axially, and the end of the lock rope (2) is released by pressing the button (5) with external force. The part of the inner sleeve (33) that protrudes from the number wheel (32) is provided with a code-finding mark (332), and the first housing (11) is provided with an inspection hole (112). When the number wheel (32) and the inner sleeve (33) turn to the correct code, the code-finding mark (332) aligns with the inspection hole (112). The lock cylinder assembly (4) is installed on the second housing (12). The second housing (12) and the first housing (11) are locked together to block the inspection hole (112). After the key is unlocked, the second housing (12) can be separated from the first housing (11).

2. A coded lockable padlock according to claim 1, characterised in that: The lock cylinder assembly (4) includes a lock core (41) and a lock pin (42). The lock core (41) is installed on the second housing (12) and can rotate after the correct key is inserted. The lock pin (42) is fixed to the top of the lock core (41). A limiting protrusion (421) is provided on the outside of the lock pin (42). When the lock core (41) is locked, the limiting protrusion (421) is embedded in the inspection hole (112), so that the first housing (11) and the second housing (12) are locked together.

3. A coded lockable padlock according to claim 2, wherein: An arc-shaped guide wall (113) is provided at the opening of the inspection hole (112).

4. A coded combination padlock according to claim 2, wherein: The second housing (12) includes an inner housing (121) and a U-shaped outer housing (122). The inner housing (121) is fixed to the inside of the outer housing (122). The lock cylinder assembly (4) is installed on the inner housing (121). The outer housing (122) is connected to the first housing (11).

5. A coded combination padlock according to claim 4 wherein: The first housing (11) is provided with a guide groove (114), and the outer shell (122) is provided with a guide rib (123). When the outer shell (122) is longitudinally embedded in the first housing (11), the guide rib (123) slides along the guide groove (114).

6. A code-traceable padlock according to claim 4, characterized in that: The limiting protrusion (421) is embedded in the inspection hole (112) to longitudinally clamp the first housing (11) and the second housing (12); the bottom of the first housing (11) is provided with a positioning post (115), and the bottom of the second housing (12) is provided with a positioning hole (124). The positioning post (115) is embedded in the positioning hole (124) to laterally clamp the first housing (11) and the second housing (12).

7. A code-traceable padlock according to claim 4, characterized in that: The side of the first housing (11) is provided with a clearance notch (116), and the inspection hole (112) is located on the side wall of the clearance notch (116). When mated, the inner housing (121) is embedded in the clearance notch (116).

8. A code-traceable padlock according to claim 1, characterized in that: The outer side of the center rod (31) is provided with multiple blocking protrusions (311) arranged at intervals along the axial direction, and the inner side of each inner sleeve (33) is provided with a relief groove (331). Only after the number wheel (32) and the inner sleeve (33) turn to the correct code, the multiple blocking protrusions (311) are aligned with the corresponding relief grooves (331), allowing the center rod (31) to move axially. In this state, the code search mark (332) is aligned with the inspection hole (112).

9. A code-traceable padlock according to claim 8, characterized in that: The code markers (332) and the clearance grooves (331) of each inner sleeve (33) are arranged symmetrically relative to the axis of the inner sleeve (33). When multiple code markers (332) are aligned with the inspection hole (112), multiple blocking protrusions (311) are aligned with multiple clearance grooves (331).

10. A code-traceable padlock according to claim 1, characterized in that: The first housing (11) is provided with a latch (6). When the password is locked, the part of the button (5) located inside the first housing (11) abuts against the latch (6), and the latch (6) locks the end of the lock rope (2). When the password is unlocked, the button (5) is pressed to release the latch (6) from the end of the lock rope (2).

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