Double-lock ratchet pawl structure anti-dislodging high-security metal handcuffs

Abstract

The invention belongs to the field of police equipment, and provides a high-security metal handcuff with a double-lock ratchet pawl structure to prevent the handcuffs from being opened, comprising: a handcuff body and a fan beam, which are combined into handcuffs for use; a main body mechanism, which is arranged on the handcuff body and the fan beam, and is used for the fan beam to rotate and adjust in the handcuff body; a lock core assembly, which is arranged in the handcuff body, and is used for the fan beam to rotate, lock and open in the handcuff body; a safety mechanism, which is arranged in the lock core assembly; in an unlocking state where no key is inserted, the ratchet can only rotate in one direction, and the handcuffs can be locked in one direction through gear transmission with the fan beam, and no object can be inserted between the ratchet and the fan beam, thereby fundamentally eliminating the possibility of opening the handcuffs by inserting foreign objects, and at the same time, the double lock core structure and the spacer structure reduce the possibility of illegally opening the handcuffs through the keyhole, and secondly, through the folding hinge, the range of motion of both hands is greatly reduced, and the comfort of holding the handcuffs is increased, thereby improving the safety performance and practicality of the handcuffs.

Description

Technical Field

[0001] The invention belongs to the field of police equipment, in particular to a pair of high-security metal handcuffs with a double-locking ratchet and pawl structure to prevent dislodging. Background Art

[0002] Handcuffs are the most commonly used police restraints in single police equipment. The K1 handcuffs currently in service use a three-row tooth-double anti-push spacer structure, the handcuff grip adopts an inclined structure, the two handcuff rings are connected by a rotating double-ring chain, and the side of the leaf spring against the lock teeth is divided into three branches;

[0003] However, the three rows of teeth can be easily opened by inserting three small / flat hard objects (such as thin iron wires or toothpicks). At the same time, the chain can rotate 360°, and the hands have a large range of movement, resulting in sufficient space for the handcuffs to open, posing a hidden danger of being easily opened. In addition, the handcuffs are not easy to grasp, and there is a risk of slipping when handcuffs are quickly put on. Secondly, the leaf spring branches are too narrow and easily damaged (the leaf springs age / break when the handcuffs fall from a height / encounter an impact / are used for a long time / are exposed to dust and moisture), which increases the probability of quality problems during the processing process.

[0004] Therefore, those skilled in the art have proposed a double-locking ratchet-pawl structure anti-dislodging high-security metal handcuffs to solve the problems raised by the background art. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a high-security metal handcuff with a double-locking ratchet and pawl structure to prevent dislodging, so as to solve the problem of potential safety hazards of handcuffs in the prior art.

[0006] The invention discloses a high-security metal handcuff with a double-lock ratchet pawl structure and anti-dislodging, comprising: a handcuff body and a fan beam, which are combined into handcuffs for use; a main body mechanism, which is arranged on the handcuff body and the fan beam and is used for the fan beam to rotate and adjust in the handcuff body; a lock core assembly, which is arranged in the handcuff body and is used for the fan beam to rotate, lock and unlock in the handcuff body; and a safety mechanism, which is arranged in the lock core assembly and is used for locking and protecting the fan beam.

[0007] Preferably, the main body mechanism comprises two cuff body pieces fixedly arranged on the cuff body, a fan beam is rotatably arranged between the two cuff body pieces, and two rows of double-row teeth are fixedly arranged on the side walls of the fan beam; and a plurality of anchor bolts are rotatably arranged on both of the two cuff bodies, the cuff bodies are rotatably arranged with two linking rings through the plurality of anchor bolts, and the two cuff bodies are rotatably arranged between them through the two linking rings.

[0008] Preferably, the main body structure further comprises a key hole formed on a side wall of the handcuff body, and a reverse locking hole is formed on the side wall of the handcuff body at a side of the key hole.

[0009] Preferably, the lock core assembly comprises two partitions fixedly arranged in the handcuff body, and a spacer is fixedly arranged between the two partitions; and the spacer has the same shape as the partition, and the width of the spacer is less than or equal to the width between the two double-row teeth.

[0010] Preferably, the lock core assembly also includes two ratchet wheels rotatably arranged in two partitions respectively, and a plurality of connecting teeth are fixedly arranged on the side walls of the ratchet wheels; a pawl is rotatably arranged in the two partitions below the ratchet wheels, a limiting tooth meshing with the connecting teeth is fixedly arranged on the top of one end of the pawl, and a No. 1 protrusion and a bump are fixedly arranged at one end of the pawl below the limiting tooth.

[0011] Preferably, the safety mechanism includes two limit blocks which are slidably arranged in two partitions respectively, and the limit blocks are located below the pawl, and a connecting rod is integrally formed on the limit blocks; a No. 2 protrusion is fixedly arranged at the middle position of the top of the limit block, and a protrusion one and a protrusion two are fixedly arranged at the top of one end of the limit block.

[0012] Preferably, the safety mechanism further comprises a leaf spring fixedly disposed in the two partitions, and the leaf spring is located between the pawl and the limit block.

[0013] Preferably, the safety mechanism also includes branch one and branch two integrally formed at one end of the leaf spring, and the branch one and branch two are respectively correspondingly engaged with the two pawls in the two partitions; the other end of the leaf spring is integrally formed with branch three and branch four, and the branch three and branch four are respectively abutted against the two limit blocks in the two partitions.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention meshes the pawl with the ratchet wheel. When the key is not inserted and the handcuffs are unlocked, the ratchet wheel can only rotate in one direction. The handcuffs can be locked in one direction through gear transmission with the fan beam. No object can be inserted between the ratchet wheel and the fan beam, which fundamentally eliminates the possibility of opening the handcuffs by inserting foreign objects. At the same time, the double lock core structure and the spacer structure reduce the possibility of illegally opening the handcuffs through the keyhole. Secondly, the foldable hinge greatly reduces the range of movement of both hands and increases the comfort of holding the handcuffs, thereby improving the safety performance and practicality of the handcuffs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a high-security metal handcuff with a double-locking ratchet and pawl structure to prevent diversion of the present invention;

[0017] Figure 2Another perspective view of the double-locking ratchet-pawl structure anti-diversion high-security metal handcuffs of the present invention, wherein a part of the handcuff body is removed to show its internal structure;

[0018] Figure 3 An exploded view of a double-locking ratchet-pawl structure anti-diversion high-security metal handcuffs of the present invention;

[0019] Figure 4 It is a diagram showing the partition structure of the present invention;

[0020] Figure 5 It is a diagram showing the leaf spring structure of the present invention;

[0021] Figure 6 This is a diagram showing the limit block structure of the present invention.

[0022] In the figure:

[0023] 1. Cuff body; 11. Linking ring; 12. Anchor bolt; 13. Cuff body piece; 131. Keyhole; 132. Anti-lock hole; 2. Lock core assembly; 21. Ratchet; 211. Limiting tooth; 212. No. 1 protrusion; 213. Protrusion; 22. Ratchet; 221. Connecting tooth; 23. Leaf spring; 231. Branch 1; 232. Branch 2; 233. Branch 3; 234. Branch 4; 24. Limiting block; 241. Protrusion 1; 242. Protrusion 2; 243. No. 2 protrusion; 244. Connecting rod; 25. Spacer; 26. Partition; 3. Fan beam; 31. Double-row teeth. DETAILED DESCRIPTION

[0024] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] Embodiment 1:

[0026] As attached Figure 1 To Attachment Figure 6 As shown:

[0027] The present invention provides a double-lock ratchet pawl structure anti-dislodging high-security metal handcuffs, comprising: a handcuff body 1 and a fan beam 3, which are combined into handcuffs for use; a main body mechanism, which is arranged on the handcuff body 1 and the fan beam 3, and is used for the fan beam 3 to rotate and adjust in the handcuff body 1; a lock core assembly 2, which is arranged in the handcuff body 1, and is used for the fan beam 3 to rotate in the handcuff body 1 to lock and unlock; a safety mechanism, which is arranged in the lock core assembly 2, and is used for locking and protecting the fan beam 3.

[0028] refer to Figure 1 , Figure 2 and Figure 3 The main body includes a handcuff body 1, a fan beam 3, a key hole 131, a reverse lock hole 132, a link ring 11 and an anchor bolt 12;

[0029] Two cuff pieces 13 are fixedly connected to the cuff body 1, so that the ends of the two cuff pieces 13 can be rotatably connected with a fan beam 3, so that the fan beam 3 can be rotatably engaged in the cuff body 1, so as to facilitate the cooperation of the two cuff pieces 13 to achieve the purpose of locking the wrist, and two rows of double-row teeth 31 are integrally formed on the side wall of the fan beam 3, so that the two rows of double-row teeth 31 can be engaged in the cuff body 1, so as to achieve the purpose of locking the fan beam 3;

[0030] At the same time, a key hole 131 is provided on the handcuff body 1, so that when the fan beam 3 is locked in the handcuff body 1 through the double-row teeth 31, it can be opened and used by inserting a key into the key hole 131, so that the handcuff body 1 releases the lock on the double-row teeth 31, so that the fan beam 3 can be rotated on the handcuff body 1 to open, and a reverse locking hole 132 is provided on the side wall of the handcuff body 1 at the side of the key hole 131, so that after the fan beam 3 is rotated and locked in the handcuff body 1, the key can be inserted into the reverse locking hole 132 and rotated and turned, so that the fan beam 3 is in a locked protection state, so as to achieve the purpose of reverse locking, thereby preventing the fan beam 3 and the handcuff body 1 from being too tight due to external force. Injury to the wrist;

[0031] Secondly, a plurality of anchor bolts 12 are rotatably connected to the two handcuff bodies 1, so that the two lock core assemblies 2 are rotatably connected to the two link rings 11 through the plurality of anchor bolts 12, so that when the two handcuff bodies 1 and the fan beam 3 are respectively locked on the two wrists, the two link rings 11 can only rotate 180 degrees between the two handcuff bodies 1, and prevent the two handcuff bodies 1 from rotating 360 degrees, thereby improving the safety of the locking of the handcuff bodies 1 and the fan beam 3.

[0032] Embodiment 2:

[0033] refer to Figure 2 , Figure 3 and Figure 4 , the lock core assembly 2 includes a partition 26, a spacer 25, a ratchet 22 and a pawl 21;

[0034] By fixing a spacer 25 between the two partitions 26 inside the handcuff body 1, and setting the spacer 25 to have the same shape as the partition 26, and the thickness of the spacer 25 is less than or equal to the width between the two rows of double-row teeth 31, the structure of the spacer 25 can save installation costs, and the spacer 25 blocks the two partitions 26, which can prevent foreign objects from passing through the keyhole 131 and simultaneously toggling the two No. 1 protrusions 212, so that the meshing locking of the two pawls 21 on the two ratchet wheels 22 will not fail at the same time, thereby improving the locking safety of the handcuff body 1 and the fan beam 3;

[0035] At the same time, two ratchets 22 are rotatably connected in the two partitions 26, and a plurality of connecting teeth 221 are integrally formed on the side walls of the ratchet wheels 22, so that when the double-row teeth 31 on the fan beam 3 are rotated and engaged in the handcuff body 1, the double-row teeth 31 can mesh with the connecting teeth 221. Secondly, a pawl 21 is rotatably connected below the ratchet wheels 22 in the two partitions 26, and a limiting tooth 211 is integrally formed on the top of one end of the pawl 21, so that the limiting tooth 211 can mesh and lock the plurality of connecting teeth 221 on the side walls of the ratchet wheels 22, so as to achieve the purpose of locking the double-row teeth 31 and the fan beam 3 by the connecting teeth 221;

[0036] Secondly, one end of the pawl 21 is located below the limiting tooth 211, and two No. 1 protrusions 212 are integrally formed, and one end of the pawl 21 is set to be circular, so that the pawl 21 can rotate around the circular end, so that the No. 1 protrusion 212 can be used to cooperate with the key, so that the pawl 21 can be turned by the key, so that the limiting tooth 211 releases the meshing lock on the connecting tooth 221, thereby rotating the double-row teeth 31 and the fan beam 3 from the handcuff body 1 to open.

[0037] Embodiment three:

[0038] refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 , the safety mechanism includes a limit block 24 and a leaf spring 23;

[0039] Two limit blocks 24 are slidably connected in the two partitions 26, and a connecting rod 244 is integrally formed on the limit block 24, so that the limit block 24 can be easily slid and adjusted in the partition 26 through the connecting rod 244, and a convex part 1 241 and a convex part 242 are integrally formed on the top of one end of the limit block 24, so that the limit block 24 can be locked and opened for use by the convex part 1 241 and the convex part 242 on the convex block 213 on the pawl 21;

[0040] At the same time, a leaf spring 23 is fixedly connected between the pawl 21 and the limit block 24 in the two partitions 26, and a branch 1 231 and a branch 232 at one end of the leaf spring 23 are respectively engaged with the pawl 21 in the two partitions 26 {the branch 1 231 and the branch 232 are in an obtuse V shape}, so that the pawl 21 can automatically restore the locking engagement with the ratchet 22 through the elastic properties of the branch 1 231 and the branch 2 232 on the leaf spring 23 during use;

[0041] Secondly, branch three 233 and branch four 234 {branch three 233 and branch four 234 are in an acute V-shape} are integrally formed at the other end of the leaf spring 23, so that the leaf spring 23 is respectively abutted against the No. 2 protrusion 243 on the top of the two limit blocks 24 through branch three 233 and branch four 234, so that the leaf spring 23 can cooperate with the two No. 2 protrusions 243 through branch three 233 and branch four 234 to achieve the purpose of limiting the movement of the two limit blocks 24.

[0042] Working principle: When the handcuff body 1 is used in cooperation with the ratchet 22 through the pawl 21 and the limit block 24, a protrusion 213 is integrally formed on the pawl 21, and at one end of the limit block 24 close to the keyhole 131, a concave structure is formed by the convex part 1 241 and the convex part 242. When the protrusion 213 is located in the concave part in the concave structure between the convex part 1 241 and the convex part 242, the pawl 21 is in a non-reverse locking position, and the pawl 21 can be moved by the key from the keyhole 131, that is, the handcuff body 1 and the fan beam 3 can be opened. When the protrusion 213 on the pawl 21 is aligned with the convex part 242 of the concave structure between the convex part 1 241 and the convex part 242, the pawl 21 is in the reverse locking position, the pawl 21 cannot be moved, and the double-row teeth 31 cannot leave the meshing lock of the connecting teeth 221. That is, the handcuff body 1 and the fan beam 3 are locked, and the branch 1 231 and the branch 2 232 at one end of the leaf spring 23 abut against the two pawls 21, and the branch 3 233 and the branch 4 234 at the other end abut against the two limit blocks 24, so that the branch 3 233 and the branch 4 234 on the leaf spring 23 respectively cooperate with the No. 2 protrusions 243 on the two limit blocks 24, thereby limiting the movement of the limit blocks 24. At the same time, an anti-locking hole 132 is also provided on the handcuff body 1. When the handcuff body 1 and the fan beam 3 are locked, the limit block 24 is shifted from the non-anti-locking position to the anti-locking position by inserting the key into the anti-locking hole 132 to achieve anti-locking. When the handcuff body 1 and the fan beam 3 are to be opened, the key needs to be inserted into the keyhole 131, first rotated counterclockwise to shift the limit block 24 from the anti-locking position to the non-anti-locking position, and then rotated clockwise to open the handcuff body 1 and the fan beam 3.

[0043] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0044] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0045] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0046] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A double-lock ratchet pawl structure anti-dislodging high-security metal handcuffs, characterized in that: include: The handcuff body (1) and the fan beam (3) are combined into handcuffs for use; The main body mechanism is arranged on the cuff body (1) and the fan beam (3) and is used for rotating and adjusting the fan beam (3) in the cuff body (1); A lock core assembly (2) is arranged in the handcuff body (1) and is used for the fan beam (3) to rotate in the handcuff body (1) to lock and unlock; The safety mechanism is arranged in the lock core assembly (2) and is used for locking and protecting the fan beam (3).

2. A double-locking ratchet-pawl structure anti-dislodging high-security metal handcuffs as claimed in claim 1, characterized in that: The main body mechanism comprises two cuff body plates (13) fixedly arranged on the cuff body (1), a fan beam (3) is rotatably arranged between the two cuff body plates (13), and two rows of double-row teeth (31) are fixedly arranged on the side wall of the fan beam (3); Furthermore, a plurality of anchor bolts (12) are rotatably arranged on the two cuff bodies (1), two linking rings (11) are rotatably arranged on the cuff bodies (1) through the plurality of anchor bolts (12), and the two cuff bodies (1) are rotatably arranged between them through the two linking rings (11).

3. A double-locking ratchet-pawl structure anti-dislodging high-security metal handcuffs as claimed in claim 2, characterized in that: The main body structure further comprises a key hole (131) formed on the side wall of the cuff body (1), and a reverse locking hole (132) is formed on the side wall of the cuff body (1) at the side of the key hole (131).

4. A double-locking ratchet-pawl structure anti-dislodging high-security metal handcuffs as claimed in claim 3, characterized in that: The lock core assembly (2) comprises two partitions (26) fixedly arranged in the handcuff body (1), and a spacer (25) is fixedly arranged between the two partitions (26); Furthermore, the spacer (25) and the partition plate (26) have the same shape, and the width of the spacer (25) is less than or equal to the width between the two double-row teeth (31).

5. A double-locking ratchet-pawl structure anti-dislodging high-security metal handcuffs as claimed in claim 4, characterized in that: The lock core assembly (2) further comprises two ratchet wheels (22) rotatably disposed in two partitions (26) respectively, and a plurality of connecting teeth (221) are fixedly disposed on the side walls of the ratchet wheels (22); A pawl (21) is rotatably provided in each of the two partitions (26) below the ratchet wheel (22); a limiting tooth (211) meshing with the connecting tooth (221) is fixedly provided at the top of one end of the pawl (21); and a No. 1 protrusion (212) and a convex block (213) are fixedly provided at one end of the pawl (21) below the limiting tooth (211).

6. A double-locking ratchet-pawl structure anti-dislodging high-security metal handcuffs as claimed in claim 5, characterized in that: The safety mechanism comprises two limit blocks (24) respectively slidably arranged in two partitions (26), and the limit blocks (24) are located below the ratchet (21), and a connecting rod (244) is integrally formed on the limit blocks (24); A second protrusion (243) is fixedly provided at the middle position of the top of the limit block (24), and a first protrusion (241) and a second protrusion (242) are fixedly provided at the top of one end of the limit block (24).

7. A double-locking ratchet-pawl structure anti-dislodging high-security metal handcuffs as claimed in claim 6, characterized in that: The safety mechanism also includes a leaf spring (23) fixedly arranged in the two partitions (26), and the leaf spring (23) is located between the pawl (21) and the limit block (24).

8. The double-locking ratchet-pawl structure anti-dislodging high-security metal handcuffs as claimed in claim 7, characterized in that: The safety mechanism further comprises a branch 1 (231) and a branch 2 (232) integrally formed at one end of the leaf spring (23), wherein the branch 1 (231) and the branch 2 (232) are respectively and correspondingly engaged with the two pawls (21) in the two partitions (26); The other end of the leaf spring (23) is integrally formed with a third branch (233) and a fourth branch (234), and the third branch (233) and the fourth branch (234) are respectively pressed against the two limit blocks (24) in the two partitions (26).

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