CN109025552B - Self-fastening handcuffs and restraint chains - Google Patents

Abstract

The application relates to a self-tightening handcuff and a constraint chain, wherein a constraint cavity is arranged in a fixed end, and a traction rod and a linkage rod are arranged in the constraint cavity; the traction rod is inserted from a through hole of the fixed end, the linkage rod is of a bending structure, a through hole is formed in the linkage rod, and the linkage rod is in rotary fit with a linkage rod rotating shaft fixed on the wall of the constraint cavity through the through hole; the side of the lower part of the traction rod is provided with a notch, one end of the linkage rod is inserted into the notch, the other end of the linkage rod is provided with a linkage rod ratchet, and the linkage rod ratchet penetrates out of the bottom of the fixed end to be meshed with or separated from the movable arm ratchet. When an illegal person pulls the traction rod, one end of the traction rod moves upwards, the notch drives the linkage rod to move upwards, the other end of the linkage rod moves downwards and rotates clockwise, the ratchet of the linkage rod is meshed with the ratchet of the movable arm, and the movable arm is enabled to move, so that the aim of tightening handcuffs of all people is fulfilled. The self-tightening handcuffs are connected in series through the chains, so that a plurality of criminals can be restrained at the same time.

Description

Self-fastening handcuffs and restraint chains

technical field

The invention relates to a police device, in particular to a chain handcuff.

Background technique

Handcuffs are police equipment used by law enforcement officers in law enforcement and case handling by public security organs. However, the current police handcuffs have a single function, cannot realize the function of automatic tightening, and cannot effectively restrain criminals; when limiting the activities of multiple criminals at a time, ordinary handcuffs can only tighten the hands of one criminal at a time, Both feet of the criminals can still move freely, which increases the possibility of escaping, and it is not possible to handcuff multiple criminals at the same time.

Contents of the invention

The technical problem to be solved by the present invention is to provide a self-tightening handcuff and restraint chain, which can be automatically tightened when criminals try to break free from the handcuffs, thereby stopping or preventing them from escaping.

In order to solve the above technical problems, according to one aspect of the present invention, a self-tightening handcuffs are provided, including a fixed end, a fixed arm, and a moving arm, one end of the fixed arm is connected with the fixed end, and one end of the moving arm is connected with the fixed arm The other end is connected by a hinge shaft, and there is a protruding boom ratchet on the outer edge of the other end of the boom; there is a lock control cavity inside the fixed end, and the lock control cavity contains a non-reverse part, and the end of the non-reverse part is provided with the boom. Backlash ratchet with ratchet fit,

A restraint cavity is provided in the fixed end outside the lock control cavity, and a traction rod and a linkage rod are arranged in the restraint cavity;

The top of the fixed end is provided with a vertical through hole that communicates with the restraint cavity, and slide rails are fixed on both sides of the through hole wall; sliders are fixed on both sides of the middle part of the drawbar, and the drawbar is inserted through the through hole at the fixed end to make the slide block and slide rail slide fit;

The linkage rod has a bending structure, and a through hole is opened on the linkage rod, through which the rotation shaft of the linkage rod fixed on the wall of the restraint chamber is matched with the rotation; There are linkage rod ratchets, and the linkage rod ratchets pass through the bottom of the fixed end to mesh with or separate from the boom ratchets.

Further, the bottom of the confinement cavity is fixed with a first magnet, and the bottom end of the drawbar is provided with a second magnet capable of attracting the first magnet.

Further, a first elastic device is fixed in the confinement cavity, and the first elastic device is connected with the linkage rod, so that the linkage rod ratchet of the linkage rod keeps a tendency to leave the boom.

Further, the ratchet of the linkage rod is connected to the end of the linkage rod through a ratchet hinge shaft, and a second elastic device is fixed in the constraint cavity, and the second elastic device is connected to the ratchet of the linkage rod, so that the ratchet of the linkage rod is far away from the linkage rod. And approach the trend of the boom.

Further, the linkage shaft is installed on the side of the drawbar that deviates from the bending point of the linkage lever.

According to another aspect of the present invention, a restraint chain is provided, including a chain, and two above-mentioned self-tightening handcuffs, the top of the drawbar is connected with a connecting ring located outside the fixed end, and through the connecting ring of the self-tightening handcuffs The spacers are fixed on the chain.

Further, the end of the chain is fixed with a buckle.

Compared with the prior art, the invention provides a restraint chain with self-tightening handcuffs, law enforcement officers can tighten the hands of criminals through the handcuffs, and when there are multiple criminals, they can be connected in series. When a criminal pulls the chain through handcuffs When using self-tightening handcuffs, the prisoner's handcuffs will be tightened automatically, and the criminals will be warned to prevent escape, strengthen management, and reduce police expenditure. , ankle, etc.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the self-fastening handcuffs of the present invention;

Fig. 2 is the schematic diagram of linkage lever in the invention;

Fig. 3 is a schematic structural view of the draw bar of the self-tightening handcuffs of the present invention when it is stationary;

Fig. 4 is a structural schematic diagram of a restraint chain with self-fastening handcuffs.

In the figure, 1-self-tightening handcuffs, 2-fixed end, 21-fixed arm, 22-moving arm, 23-hinge shaft, 24-moving arm ratchet, 3-lock control chamber, 31-reversing check piece, 32 - Backlash ratchet, 4-constraint cavity, 41-drawing rod, 42-linkage rod, 4301-slide rail, 5-connecting ring, 4302-slider, 45-notch, 46-insert end, 47-linkage rod ratchet Teeth, 4801-link shaft, 4802-ratche hinge shaft, 4401-first magnet, 4402-second magnet, 4901-first elastic device, 4902-second elastic device, L-bending point, 6-chain , 7-lock.

Detailed ways

In order to enable those skilled in the art to better understand the present invention, the present invention will be further clearly and completely described below in conjunction with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

A kind of self-fastening handcuffs provided by a typical embodiment of the present invention, referring to Fig. 1, includes a fixed end 2, a fixed arm 21, and a moving arm 22, one end of the fixed arm is connected with the fixed end 2, and the moving arm 22 One end of the fixed arm 21 is connected with the other end of the fixed arm 21 through the hinge shaft 23, and the outer edge of the other end of the movable arm 22 has a protruding boom ratchet 24; the fixed end 2 has a lock control cavity 3 inside, and the lock control cavity 3 contains anti-reverse parts 31. A non-return ratchet 32 that cooperates with the boom ratchet 24 is provided at the end of the non-reverse member 31 . The boom ratchet 24 cooperates with the non-reverse ratchet 32 to realize the locking of the handcuffs.

The fixed end 2 on the outside of the lock control chamber 3 is provided with a restraint chamber 4 , and the restraint chamber 4 is provided with a traction rod 41 and a linkage rod 42 .

The top of the fixed end 2 is provided with a vertical through hole communicating with the restraint cavity 4, and slide rails 4301 are fixed on both sides of the through hole wall; sliding blocks 4302 are fixed on both sides of the middle part of the draw bar 41, and the draw bar 41 is inserted from the through hole of the fixed end 2 and The sliding block 4302 is slidingly matched with the sliding rail (4301). The linkage rod 42 is a bent structure, and there is a through hole on the linkage rod 42, through which it rotates and cooperates with the linkage rod shaft 4801 fixed on the wall of the confinement chamber 4; Insert the notch 45 , and the other end is provided with a linkage rod ratchet 47 , and the linkage rod ratchet 47 passes through the bottom of the fixed end to mesh with or separate from the boom ratchet 24 .

When the traction rod 41 moves along the slide rail 4302, the notch 45 drives the insertion end 46 at one end of the linkage rod to move up and down, so that the linkage rod ratchet 47 at the other end of the linkage rod engages or separates from the boom ratchet 24. The position where the top of the drawbar passes through the fixed end can be directly or indirectly connected to devices that limit the activities of criminals, and these devices can be ordinary handcuffs, another self-tightening handcuffs according to the present invention, chains, rods, walls, etc. When the traction rod 41 is not stressed, the linkage rod ratchet 47 is separated from the boom ratchet 24 . When the lawless person attempts to break free by force, the draw bar 41 is forced to pull outwards, and the notch 45 drives the insertion end 46 of the link bar 42 to move upwards, and the link bar ratchet 47 at the other end of the link bar engages with the boom ratchet 24 and promotes it. Move in the tightening direction to achieve further tightening.

In a preferred embodiment, the bottom of the confinement chamber 4 is fixed with a first magnet 4401 , and the bottom of the drawbar 41 is provided with a second magnet 4402 that can attract the first magnet. , the second magnet 4402 at the bottom of the drawbar 41 is adsorbed to the first magnet 4401 when the drawbar 41 is under no force or a small force, and produces a certain restraining force on the drawbar 41. When the drawbar 41 is subjected to a pulling force greater than In the case of the adsorption force between the magnets, the magnets are disengaged, and the drawbar 41 moves upward. On the one hand, it limits the movement of the drawbar due to any pulling force, and on the other hand, when the breakaway force is accumulated to a certain extent, the breakaway moment acts on the linkage The force of the rod is greater, and the tightening effect is more obvious.

In another preferred embodiment, a first elastic device 4901 is fixed in the constraint cavity 4, and the first elastic device 4901 is connected with the linkage rod 42, so that the linkage rod ratchet 47 of the linkage rod 42 is kept away from the boom 22 the trend of. Referring to Fig. 2 and Fig. 3, the first elastic device 4901 in the figure is a V-shaped reed, one end of which is connected to the wall of the confinement cavity, and the other end is connected to the end of the linkage rod 42 close to the ratchet 47 of the linkage rod. When the linkage rod 42 is subjected to the pulling force of the traction rod, it rotates clockwise, thereby compressing the first elastic device, so that the elastic device has energy storage for rebounding or resetting the linkage rod.

In another preferred embodiment, the linkage rod ratchet 47 is connected to the end of the linkage rod 42 through the ratchet hinge shaft 4802, and the second elastic device 4902 is fixed in the constraint cavity, and the second elastic device 4902 is ratcheted with the linkage rod. The teeth 47 are connected so that the linkage rod ratchet 47 tends to move away from the linkage rod 42 and approach the boom 22 . When the unscrupulous person pulls the drawbar intermittently, the linkage lever ratchet needs to cross a plurality of swing arm ratchets 24, and the second elastic device can make the linkage lever ratchet 47 automatically embed into the next swing arm ratchet 24 after crossing the top of one swing arm ratchet. Boom ratchet inner groove.

In a preferred embodiment, the linkage rod shaft 4801 is installed at a position away from the bending point (L) of the linkage rod 42 and close to the side of the traction rod. When the drawbar moves upwards, the ratchet at the other end of the linkage rod 42 has a tendency to move downwards in addition to the circular movement, so that the linkage rod ratchet 47 meshes with the boom ratchet 24 more rapidly.

Another typical embodiment of the present invention provides a restraint chain, referring to FIG. 4 , which includes a chain (6) and two self-tightening handcuffs 1 as described above. The top of the drawbar 41 is connected to a The connecting rings 5 of the handcuffs are fixed on the chain 6 at intervals of the connecting rings 5 of the self-tightening handcuffs. Preferably, the end of the chain 6 is fixed with a buckle 7 .

This embodiment can realize the series connection of multiple criminals. When any individual pulls the handcuffs forcefully, the pull ring on the handcuffs of other people will generate a pulling force on the draw bar 41. One end 41 of the draw bar moves upward, and the notch 45 drives the linkage bar. Move up, the other end of the linkage rod moves down and rotates clockwise, the linkage rod ratchet 47 engages with the boom ratchet 24, and the boom moves, thereby realizing the purpose of tightening the handcuffs of all people.

Claims (7)

1. The self-tightening handcuffs comprise a fixed end (2), a fixed arm (21) and a movable arm (22), wherein one end of the fixed arm is connected with the fixed end (2) into a whole, one end of the movable arm (22) is connected with the other end of the fixed arm (21) through a hinge shaft (23), and a protruding movable arm ratchet (24) is arranged on the outer edge of the other end of the movable arm (22); a lock control cavity (3) is arranged in the fixed end (2), the lock control cavity (3) comprises a check piece (31), and a check ratchet (32) matched with the movable arm ratchet (24) is arranged at the end part of the check piece (31), and is characterized in that:

a constraint cavity (4) is arranged in the fixed end (2) at the outer side of the lock control cavity (3), and a traction rod (41) and a linkage rod (42) are arranged in the constraint cavity (4);

the top of the fixed end (2) is provided with a vertical through hole communicated with the constraint cavity (4), and sliding rails (4301) are fixed on two sides of the wall of the through hole; the two sides of the middle part of the traction rod (41) are fixed with the sliding blocks (4302), and the traction rod (41) is inserted from the through hole of the fixed end (2) and enables the sliding blocks (4302) to be in sliding fit with the sliding rail (4301);

the linkage rod (42) is of a bending structure, a through hole is formed in the linkage rod (42), and the linkage rod is in rotary fit with a linkage rod rotating shaft (4801) fixed on the wall of the constraint cavity (4) through the through hole; the side of the lower part of the traction rod (41) is provided with a notch (45), one end of the linkage rod is inserted into the notch (45), the other end of the linkage rod is provided with a linkage rod ratchet (47), and the linkage rod ratchet (47) penetrates out of the bottom of the fixed end to be meshed with or separated from the movable arm ratchet (24).

2. The self-tightening handcuff according to claim 1, wherein the bottom of the restraint cavity (4) is fixed with a first magnet (4401), and the bottom end of the traction rod (41) is provided with a second magnet (4402) which can attract the first magnet.

3. Self-tightening handcuff according to claim 1 or 2, characterized in that the restraining chamber (4) is internally fixed with a first elastic means (4901), the first elastic means (4901) being connected to the linkage rod (42) for keeping the linkage rod ratchet (47) of the linkage rod (42) in a tendency to leave the movable arm (22).

4. A self-tightening handcuff according to claim 3, wherein the linkage rod ratchet (47) is connected to the end of the linkage rod (42) by a ratchet hinge shaft (4802), and a second elastic means (4902) is fixed in the constraining cavity, and the second elastic means (4902) is connected to the linkage rod ratchet (47) so that the linkage rod ratchet (47) has a tendency to move away from the linkage rod (42) and approach the movable arm (22).

5. The self-tightening handcuff (1) according to claim 4, wherein the link lever rotation shaft (4801) is installed at a side close to the traction lever at a position deviated from the bending point (L) of the link lever (42).

6. A restraint chain, characterized by comprising a chain (6) and more than two self-tightening handcuffs (1) according to claim 1, wherein the top of a traction rod (41) is connected with a connecting ring (5) positioned outside a fixed end (2), and the self-tightening handcuffs are fixed on the chain (6) at intervals through the connecting ring (5) of the self-tightening handcuffs (1).

7. A constraint chain according to claim 6, characterized in that the end of the chain (6) is fixed with a catch (7).