Handcuff lock with password retrieving structure

Abstract

The utility model discloses a handcuff lock with a code retrieving structure, which belongs to the technical field of locksets and comprises a coded lock mechanism, the coded lock mechanism comprises a middle shaft, a groove is rotatably mounted on the middle shaft, a code wheel is clamped outside the middle shaft, the code retrieving mechanism comprises a fixed frame arranged in a sliding manner, a plurality of elastic code retrieving pins are mounted on the fixed frame, and a retrieving lock cylinder is arranged on the lower side of the fixed frame. The inner clamping ring is provided with a retrieving groove matched with the elastic code finding pin. According to the technical scheme, a key is inserted into the lock cylinder to be found, the lock cylinder is screwed to rotate, the fixing frame is jacked up, the elastic code finding pin abuts against the inner clamping ring and deforms, if a finding groove right faces the elastic code finding pin, the elastic code finding pin is directly clamped into the elastic code finding pin, at the moment, the code wheel cannot rotate, and it is indicated that the code at the position is correct; the other password wheels at the incorrect positions drive the inner clamping rings to rotate in the rotating process until the corresponding elastic code finding pins are clamped into the finding grooves, and in the mode, when all the password wheels cannot rotate any more, the correct password is found.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically a handcuff lock with a password retrieval structure. Background Technology

[0002] Mechanical combination handcuffs, as the name suggests, are handcuffs that use a mechanical combination lock mechanism to lock and unlock. These handcuffs typically contain a combination code; only by entering the correct code can the handcuffs be opened. Mechanical combination handcuffs may offer high security because the complexity of the code increases the difficulty of unauthorized opening. They may also be highly durable because their relatively simple mechanical structure is not easily affected by external environmental factors.

[0003] The utility model with announcement number CN219365699U provides a handcuff lock combination retrieval structure. The structure includes a handcuff body, a lock shell, and a mechanical combination lock. The mechanical combination lock includes an outer wheel, an inner wheel, and an axle, as well as a combination retrieval mechanism. The combination retrieval mechanism includes several pins and a drive mechanism to move each pin. The inner wheel has a slot, and the pins of the combination retrieval mechanism can be movably inserted into the slots of the inner wheel. When all the pins are inserted into the corresponding slots of the inner wheel, the combination wheel displays the correct combination. This utility model achieves combination retrieval by driving the pins into the slots of the inner wheel with a mechanical key. The combination retrieval is only activated when the key is matched. The structure is simple, easy to implement, difficult for others to retrieve, and has good security.

[0004] In the above structure, the password retrieval mechanism is relatively complex and contains many small parts, making it difficult to assemble during production. It is also difficult to maintain and repair during use, resulting in high usage costs for the handcuffs. Furthermore, the complex structure increases the risk of damage and causes inconvenience. Therefore, to address these issues, a handcuff lock with a password retrieval mechanism is proposed. Utility Model Content

[0005] The technical problem this invention aims to solve is to provide a handcuff lock with a password retrieval structure. When the password is correct, the retrieval grooves on the inner retaining ring all face downwards. A matching key is inserted into the retrieval lock cylinder and rotated, which in turn lifts the fixing frame, causing the elastic retrieval pin to press against the inner retaining ring and deform elastically. Under this premise, if the retrieval groove is directly aligned with the elastic retrieval pin, the pin will directly engage during its upward movement, preventing the password wheel from rotating, indicating that the password at that position is correct. The other incorrectly positioned password wheels will rotate, causing the inner retaining ring to rotate until the corresponding elastic retrieval pin engages in the retrieval groove. When all password wheels can no longer rotate, the correct password has been found. This retrieval structure is simple in construction, low in cost, and significantly reduces costs in production, installation, and maintenance. It is easy to use and solves the technical problems of existing password retrieval mechanisms, which are complex and contain many small parts, making assembly difficult during production and daily maintenance and repair challenging.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A handcuff lock with a password retrieval structure includes a housing on which a fixed locking ring is fixedly mounted. A movable locking ring is rotatably connected to the end of the fixed locking ring. The housing contains a locking tongue for locking the movable locking ring. The locking tongue can move up and down within a certain range. A locking spring is used to lock the locking tongue when it is raised, preventing it from moving down. In the above structure, the locking spring can limit the sliding of the locking tongue, ensuring that the locking tongue can always be in a fixed position and maintain a locking relationship between the movable locking ring and the fixed locking ring, preventing the movable locking ring from separating from the fixed locking ring.

[0008] The combination lock mechanism includes a central shaft with a rotatable groove on it, around which combination wheels are engaged. The combination retrieval mechanism includes a slidingly mounted fixed frame with several elastic retrieval pins. A retrieval lock cylinder is located under the fixed frame. Furthermore, an inner retaining ring has a retrieval groove that engages with the elastic retrieval pins. By inserting a matching key into the retrieval lock cylinder and turning it, the fixed frame is lifted, causing the elastic retrieval pins to press against the inner retaining ring and deform elastically. Under these conditions, if the retrieval groove is aligned with an elastic retrieval pin, the pin will directly engage during its upward movement, preventing the combination wheels from rotating, indicating that the combination is correct at that position. The other combination wheels, when not in the correct position, will rotate, causing the inner retaining ring to rotate until the corresponding elastic retrieval pin engages in the retrieval groove. When all combination wheels are no longer able to rotate, the correct combination has been found.

[0009] In one possible implementation, the inner retaining ring has a receiving groove that fits into the locking spring. When the outer wall of the inner retaining ring contacts the locking spring, it squeezes the locking spring and causes it to tilt upwards. At this time, the top of the locking spring contacts the bolt. When the receiving groove faces the locking spring, the locking spring will spring back and lock into the receiving groove. At this time, the top of the locking spring separates from the bolt. Based on the above structure, when all the receiving grooves are facing the locking spring, that is, when all the combination wheels are rotated to the correct position, the locking spring can fully spring back into the receiving groove, and only then can it completely lose its limiting effect on the bolt.

[0010] In one possible implementation, a plurality of engaging protrusions are fixedly provided at the end of the inner retaining ring, and a plurality of inner retaining teeth are fixedly provided inside the password wheel. The inner retaining teeth and the engaging protrusions engage with each other. Based on the above structure, the engagement between the password wheel and the inner retaining ring can be achieved through the engagement between the inner retaining teeth and the engaging protrusions.

[0011] In one possible implementation, a mounting plate is fixedly installed inside the housing, and a toggle groove is provided on its back. The central shaft is slidably mounted on the mounting plate, and a number-changing lever is fixedly connected to its end. The end of the number-changing lever is located in the toggle groove. When it is necessary to change the code, all the elastic code-finding pins are first engaged in the retrieval groove, so that the inner retaining ring cannot rotate. At this time, the number-changing lever is moved to drive the central shaft to slide, so that the inner retaining ring separates from the code wheel. Then the code wheel can be rotated to change the code. After the code change is completed, the number-changing lever is moved to drive the central shaft to slide back, so that the inner retaining ring engages with the code wheel, thus completing the code change.

[0012] In one possible implementation, the movable locking ring has several toothed grooves with dimensions matching those of the locking tongue. At the same time, a reset spring is connected to the bottom of the locking tongue for resetting. The reset spring can apply a pushing force to the locking tongue, so that it can automatically reset when no external force is applied.

[0013] In one possible implementation, the cipher wheel has several grooves arranged in a circular array, in which numbers are drawn. A positioning spring is fixedly installed inside the outer shell, and a protrusion bend that matches the size of the groove is formed on the spring. The engagement between the positioning spring and the cipher wheel can ensure that the position where the cipher wheel stops each time it rotates is at a fixed angle, so that after each rotation, other structures can be smoothly engaged.

[0014] In one possible implementation, a connector is fixedly provided at the bottom of the outer shell for connecting a chain, so as to securely connect the two handcuffs together via the chain.

[0015] In one possible implementation, a cover plate is fixedly connected to the fixing frame to cover the bottom end of the elastic tracking pin, so that the elastic tracking pin is detachably connected to the fixing frame. The above structure can facilitate the disassembly and assembly of the elastic tracking pin and significantly improve the replacement efficiency of the elastic tracking pin.

[0016] In summary, this utility model has the following beneficial technical effects:

[0017] When the password is correct, the retrieval slots on the inner retaining ring all face downwards. The matching key is inserted into the retrieval lock cylinder and rotated, which in turn lifts the fixing frame, causing the elastic retrieval pin to press against the inner retaining ring and deform elastically. Under this condition, if the retrieval slot is directly aligned with the elastic retrieval pin, the pin will directly engage during its upward movement, preventing the combination wheel from rotating, indicating that the password at that position is correct. The other combination wheels, in their incorrect positions, will rotate, causing the inner retaining ring to rotate until the corresponding elastic retrieval pin engages in the retrieval slot. When all combination wheels can no longer rotate, the correct password has been found. This retrieval structure is simple in construction, low in cost, and can significantly reduce costs in production, installation, and subsequent maintenance, making it easy to use. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the password retrieval mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram illustrating the working principle of the combination lock of this utility model;

[0023] Figure 5 This is a partial structural diagram of the combination lock mechanism of this utility model;

[0024] Figure 6 This is a rear view of the overall structure of this utility model;

[0025] Figure 7 This is a partial structural schematic diagram of the present invention.

[0026] In the diagram: 1. Outer shell; 11. Mounting plate; 12. Actuating groove; 2. Fixed locking ring; 3. Movable locking ring; 31. Tooth groove; 4. Lock tongue; 41. Return spring; 5. Locking spring; 6. Combination lock mechanism; 61. Central shaft; 62. Number changing lever; 63. Inner retaining ring; 631. Retrieval groove; 632. Snap-fit ​​protrusion; 633. Receiving groove; 64. Combination wheel; 641. Inner retaining tooth; 7. Combination retrieval mechanism; 71. Fixing bracket; 72. Cover plate; 73. Elastic retrieval pin; 74. Retrieval lock cylinder; 8. Connecting piece; 9. Positioning spring. Detailed Implementation

[0027] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0028] like Figure 1 - Figure 3 As shown, this embodiment provides a handcuff lock with a password retrieval structure, including a housing 1 on which a fixed locking ring 2 is fixedly installed. A movable locking ring 3 is rotatably connected to the end of the fixed locking ring 2. The housing 1 is provided with a locking tongue 4 for locking the movable locking ring 3. The locking tongue 4 can move up and down within a certain range. A locking spring 5 locks the locking tongue 4 when it is raised, preventing it from moving down. In the above structure, the locking spring 5 can restrict the sliding of the locking tongue 4, ensuring that the locking tongue 4 can always be in a fixed position and always maintain a locking relationship with the movable locking ring 3, preventing the movable locking ring 3 from separating from the fixed locking ring 2.

[0029] The outer casing 1 contains a combination lock mechanism 6, which includes a central shaft 61 with a groove rotatably mounted on it. A combination wheel 64 is engaged with the central shaft 61. A combination retrieval mechanism 7 includes a slidingly mounted fixed frame 71 with several elastic retrieval pins 73. A retrieval lock cylinder 74 is located on the lower side of the fixed frame 71. Furthermore, the inner retaining ring 63 has a retrieval groove 631 that engages with the elastic retrieval pins 73. By inserting a matching key into the retrieval lock cylinder 74 and rotating it, the fixed frame 71 is lifted, causing the elastic retrieval pins to engage. 73 presses against the inner retaining ring 63 and undergoes elastic deformation. Under this premise, if the retrieval groove 631 is directly aligned with the elastic retrieval pin 73, the elastic retrieval pin 73 will directly engage in it during the upward movement. At this time, the combination wheel 64 cannot rotate, indicating that the combination is correct at that position. The other combination wheels 64 that are not in the correct position will drive the inner retaining ring 63 to rotate during the rotation until the corresponding elastic retrieval pin 73 engages in the retrieval groove 631. When all the combination wheels 64 can no longer rotate, the correct combination has been found.

[0030] like Figure 4 - Figure 5As shown, the inner retaining ring 63 has a receiving groove 633 that fits with the locking spring 5. When the outer wall of the inner retaining ring 63 contacts the locking spring 5, it will squeeze the locking spring 5 and make it pop up. At this time, the top of the locking spring 5 contacts the bolt 4. When the receiving groove 633 faces the locking spring 5, the locking spring 5 will spring back and get into the receiving groove 633. At this time, the top of the locking spring 5 separates from the bolt 4. Based on the above structure, when all the receiving grooves 633 are facing the locking spring 5, that is, when all the combination wheels 64 are rotated to the correct position, the locking spring 5 can fully spring back into the receiving groove 633, and only then can it completely lose its limiting effect on the bolt 4.

[0031] like Figure 3 - Figure 5 As shown, a plurality of engaging protrusions 632 are fixedly provided at the end of the inner retaining ring 63, and a plurality of inner retaining teeth 641 are fixedly provided inside the code wheel 64. The inner retaining teeth 641 and the engaging protrusions 632 engage with each other. Based on the above structure, the engagement between the code wheel 64 and the inner retaining ring 63 can be achieved by the engagement between the inner retaining teeth 641 and the engaging protrusions 632.

[0032] like Figure 2 , Figure 3 , Figure 6 As shown, a mounting plate 11 is fixedly installed inside the outer casing 1, and a toggle groove 12 is opened on its back. The central shaft 61 is slidably installed on the mounting plate 11, and a number-changing lever 62 is fixedly connected to its end. The end of the number-changing lever 62 is located in the toggle groove 12. When it is necessary to change the code, all the elastic code-finding pins 73 are first made to be engaged in the retrieval groove 631, so that the inner retaining ring 63 cannot rotate. At this time, the number-changing lever 62 is moved to drive the central shaft 61 to slide, so that the inner retaining ring 63 is separated from the code wheel 64. At this time, the code wheel 64 can be rotated to change the code. After the code change is completed, the number-changing lever 62 is moved to drive the central shaft 61 to slide back, so that the inner retaining ring 63 is engaged with the code wheel 64, thus completing the code change.

[0033] like Figure 7 As shown, the movable locking ring 3 has several toothed grooves 31 with dimensions matching those of the locking tongue 4. At the same time, a reset spring 41 for resetting is connected to the bottom of the locking tongue 4. The reset spring 41 can apply a pushing force to the locking tongue 4, so that it can automatically reset when it is not subjected to external force.

[0034] like Figure 4 As shown, the cipher wheel 64 has several grooves arranged in a circular array, in which numbers are drawn. A positioning spring 9 is fixedly installed inside the outer shell 1, and a protrusion bend that matches the size of the groove is formed on it. The locking action between the positioning spring 9 and the cipher wheel 64 can ensure that the position where the cipher wheel 64 stops each time it rotates is a fixed angle, so that after each rotation, other structures can be smoothly locked together.

[0035] like Figure 1 - Figure 2 As shown, a connector 8 is fixedly installed at the bottom of the outer casing 1, which is used to connect the chain, so as to fix the two handcuffs together by the chain.

[0036] like Figure 3 As shown, a cover plate 72 is fixedly connected to the fixing frame 71, which is used to cover the bottom end of the elastic finding pin 73, so that the elastic finding pin 73 is detachably connected to the fixing frame 71. The above structure can facilitate the disassembly and assembly of the elastic finding pin 73 and significantly improve the replacement efficiency of the elastic finding pin 73.

[0037] The working principle and usage process of this utility model:

[0038] When the password is correct, the retrieval grooves 631 on the inner retaining ring 63 all face downwards. The matching key is inserted into the retrieval lock cylinder 74 and rotated, which in turn lifts the fixing frame 71, causing the elastic retrieval pin 73 to press against the inner retaining ring 63 and deform elastically. Under this condition, if the retrieval groove 631 is directly aligned with the elastic retrieval pin 73, the elastic retrieval pin 73 will directly engage in it during its upward movement. At this point, the password wheel 64 cannot rotate, indicating that the password at that position is correct. The other incorrect password wheels 64 will rotate, causing the inner retaining ring 63 to rotate until the corresponding elastic retrieval pin 73 engages in the retrieval groove 631. When all the password wheels 64 can no longer rotate, the correct password has been found. This retrieval structure is simple in construction, low in cost, and can significantly reduce costs in production, installation, and subsequent maintenance, making it easy to use.

[0039] Furthermore, when it is necessary to change the password, first make all the elastic code-finding pins 73 engage in the retrieval slots 631, so that the inner locking ring 63 cannot rotate. At this time, move the code-changing lever 62 to drive the central shaft 61 to slide, so that the inner locking ring 63 separates from the code wheel 64. Then, the code wheel 64 can be rotated to change the code. After the code change is completed, move the code-changing lever 62 to drive the central shaft 61 to slide back, so that the inner locking ring 63 engages with the code wheel 64, thus completing the password change.

[0040] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A handcuff lock with a password retrieval mechanism, characterized in that, include: The outer casing (1) is equipped with a fixed locking ring (2) and a movable locking ring (3), and the outer casing (1) is provided with a movable locking tongue (4) for locking the movable locking ring (3); The locking spring (5) blocks the latch (4) when it is raised, preventing it from moving down; The combination lock mechanism (6) includes a central shaft (61), on which an inner retaining ring (63) is rotatably mounted, and a combination wheel (64) is attached to its outer side; The password retrieval mechanism (7) includes a sliding fixed frame (71) on which several elastic retrieval pins (73) are installed. A retrieval lock cylinder (74) is provided on the lower side of the fixed frame (71). In addition, a retrieval groove (631) is provided on the inner retaining ring (63) to fit with the elastic retrieval pins (73). When the key is turned to retrieve the lock cylinder (74), it can rotate and press the fixed frame (71) to move upward, so that the elastic retrieval pins (73) engage with the retrieval groove (631).

2. The handcuff lock with a password retrieval structure according to claim 1, characterized in that: The inner retaining ring (63) has a receiving groove (633) that fits with the locking spring (5). When the outer wall of the inner retaining ring (63) contacts the locking spring (5), it will squeeze the locking spring (5) and make it lift up. At this time, the top of the locking spring (5) contacts the lock tongue (4). When the receiving groove (633) faces the locking spring (5), the locking spring (5) will spring back and be inserted into the receiving groove (633). At this time, the top of the locking spring (5) separates from the lock tongue (4).

3. A handcuff lock with a password retrieval structure according to claim 1, characterized in that: The inner retaining ring (63) has a plurality of retaining protrusions (632) fixedly provided at its end, and the password wheel (64) has a plurality of inner retaining teeth (641) fixedly provided inside, and the inner retaining teeth (641) and the retaining protrusions (632) engage with each other.

4. A handcuff lock with a password retrieval structure according to claim 1, characterized in that: An mounting plate (11) is fixedly installed inside the outer shell (1), and a toggle groove (12) is provided on its back. The central shaft (61) is slidably installed on the mounting plate (11), and a variable-signature lever (62) is fixedly connected to its end. The end of the variable-signature lever (62) is located in the toggle groove (12).

5. A handcuff lock with a password retrieval structure according to claim 1, characterized in that: The movable locking ring (3) has several toothed grooves (31) with dimensions matching those of the locking tongue (4). At the same time, a reset spring (41) for resetting is connected to the bottom of the locking tongue (4).

6. A handcuff lock with a password retrieval structure according to claim 1, characterized in that: The password wheel (64) has several grooves arranged in a circular array, in which numbers are drawn. The outer shell (1) is fixedly provided with a positioning spring (9), on which a raised bend that matches the size of the groove is machined.

7. A handcuff lock with a password retrieval structure according to claim 1, characterized in that: The bottom of the outer shell (1) is fixedly provided with a connector (8) for connecting the chain.

8. A handcuff lock with a password retrieval structure according to claim 1, characterized in that: A cover plate (72) is fixedly connected to the fixing frame (71), which is used to cover the bottom end of the elastic code pin (73), so that the elastic code pin (73) and the fixing frame (71) can be detachably connected.

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