CN219012259U - Safety handcuffs with protection device - Google Patents

Abstract

The utility model relates to the technical field of handcuffs, in particular to an insurance handcuff with a protection device, which comprises a first handcuff component, a second handcuff component and a chain, wherein the first handcuff component is connected with the second handcuff component through the chain; the first handcuff component comprises a first cuff body, a second cuff body, a locking mechanism, a safety rod and a protection body, wherein one end of the second cuff body is hinged with one end of the first cuff body, the other end of the second cuff body is a free end, a chain is connected with the first cuff body, an open mounting cavity is formed in the other end of the first cuff body, the locking mechanism and the safety rod are both arranged in the mounting cavity and are both movably connected with the first cuff body, the protection body is arranged on the side part of the first cuff body, the safety rod is partially protruded out of the side part of the first cuff body, and the protection body is positioned beside the safety rod and partially wraps the safety rod. The safety handcuffs with the protection device can be used for conveniently and rapidly carrying out safety on handcuffs, can avoid misoperation, and provides convenience for police personnel when the police personnel execute tasks.

Description

Safety handcuffs with protection device

Technical Field

The utility model relates to the technical field of handcuffs, in particular to a safety handcuff with a protection device.

Background

After the controlled personnel are copied by utilizing handcuffs, the safety is usually required to be quickly opened, the controlled personnel are prevented from resisting and struggling or are prevented from being touched by mistake, the controlled personnel are made to copy and tighten by themselves, and a key is usually required to be used for opening the locking safety. The key is small, the key is not easy to take and operate quickly, in the time of taking the key, the controlled personnel can resist, the controlled personnel can lock and tighten more, the problems that the blood circulation of the controlled personnel is not smooth, hand necrosis and the like can occur easily even if the controlled personnel is not treated for a long time, and the controlled personnel can break loose control easily when the handcuffs are released by taking the key; in order to solve the problem, part of handcuffs are directly arranged outside in a safety manner, and the safety can be easily pressed outside, but at the same time, the safety is easy to operate by mistake before a person to be controlled is copied, and the handcuffs are locked, lose functions, cannot be opened and cannot be copied up until the key is used for resetting, so that the process of capturing criminals is quite unfavorable.

The prior patent discloses a novel handcuff, which consists of two outer sheets connected by a loose axle, a lock tongue, a fixing frame arranged between the two outer sheets and a ratchet block, wherein a safety device of the handcuff is a cuboid with a groove and a boss, the tail part of the safety device is a cylindrical integral part, the cylindrical tail part passes through a hole on the fixing frame and is exposed outside the fixing frame, when a person needs to be locked, the tail part of the safety device is only pressed by a thumb, the safety can be locked, the operation is simple, convenient, quick and flexible, and convenience is provided for public security personnel to execute tasks. The handcuffs are easy and convenient to lock, but the insurance is directly arranged outside, and the insurance is easily pressed down outside, and meanwhile, the misoperation is easy before the controlled personnel are copied, so that the handcuffs are required to be unlocked again before being used, and the capturing process is delayed.

Disclosure of Invention

The utility model aims to solve the problems that the conventional handcuffs are not convenient enough in the safety process or the safety process is easy but can cause misoperation, and provides the safety handcuffs with the protection device, which can be used for conveniently carrying out safety on handcuffs, can avoid misoperation and provides convenience for police personnel when executing tasks.

In order to solve the technical problems, the utility model adopts the following technical scheme:

providing a safety handcuff with a protection device, comprising a first handcuff component, a second handcuff component and a chain, wherein the first handcuff component is connected with the second handcuff component through the chain; the first handcuff assembly comprises a first cuff body, a second cuff body, a locking mechanism, a safety rod and a protection body, one end of the second cuff body is hinged with one end of the first cuff body, the other end of the second cuff body is a free end, a chain is connected with the first cuff body, an open mounting cavity is formed in the other end of the first cuff body, the locking mechanism and the safety rod are both arranged in the mounting cavity and are both movably connected with the first cuff body, the protection body is arranged on the side portion of the first cuff body, the safety rod is arranged on the side portion of the first cuff body in a protruding mode, the protection body is located on the side portion of the safety rod and is used for partially wrapping the safety rod, the free end of the second cuff body can be inserted into the first cuff body and then is clamped and locked with the locking mechanism, and the safety rod can be toggled from a gap between the first cuff body and the protection body to enable the safety rod to move back and forth to abut against the locking mechanism to limit or release the limit.

According to the scheme, the safety bar extends from the inside of the first cuff body to the outside of the first copying body and is changed into the operation device of safety, the safety bar can be directly stirred by hands from the gap between the first cuff body and the protection body to conduct safety operation on the cuffs, the safety bar is not required to be stirred by keys, convenience is provided for a capturing process, the time from wearing the cuffs to safety on the cuffs for a controlled person is saved, the problems that the controlled person is prevented from getting unsmooth blood circulation, even hand necrosis and the like due to the fact that the cuffs are locked more tightly by the controlled person against the force are avoided, the trouble that the controlled person breaks loose control caused by the fact that the controlled person is regulated by keys is also avoided, when a person needs to be locked, the safety can be locked only by stirring the end of the safety bar from the gap between the protection body and the side part of the first cuff body by the thumb, and the safety device is simple, quick and flexible in operation, and convenience is provided for public security personnel to execute tasks. Meanwhile, a protective body is arranged on the side part of the first copying body and used for protecting the safety lever, so that the influence on the use of handcuffs caused by false touch during the use of the handcuffs is prevented.

Further, the locking mechanism comprises a non-return piece and an elastic piece, the non-return piece and the elastic piece are both arranged in the mounting cavity, the non-return piece is rotationally connected with the first cuff body, one side of the elastic piece is in butt joint with the non-return piece, the other side of the elastic piece is in butt joint with the safety lever, a plurality of first ratchets are arranged on one side of the non-return piece, a plurality of second ratchets are arranged at the free end of the second cuff body, the first ratchets can be clamped with the second ratchets, a first bulge is arranged on the other side of the non-return piece, and the safety lever can move back and forth to avoid the first bulge or limit the first bulge in butt joint. When the free end of the second cuff body rotates anticlockwise relative to the first cuff body, the force is transmitted to the first ratchet from the second ratchet by utilizing the cooperation of the first ratchet and the second ratchet, and the backstop is pushed to compress the elastic piece to vacate a movable space for the second ratchet, so that the second ratchet can smoothly rotate; and the second cuff body cannot rotate clockwise due to the limit of the first ratchet teeth to the second ratchet teeth, so that the non-return effect is achieved. When the safety rod is positioned at a position for avoiding the first bulge, the safety rod is in a state of being closed, and the backstop piece can compress the elastic piece to enable the second cuff body to continuously rotate anticlockwise relative to the first cuff body, so that the handcuffs are tightly tightened; when the safety rod is positioned at the position for abutting and limiting the first bulge, the safety rod is in an unlocking state, the non-return piece cannot compress the elastic piece to enable the second handcuff body to continuously rotate anticlockwise relative to the first handcuff body, the handcuffs can keep unchanged in state, and even if a controlled person resists the force, the second handcuff body cannot be locked more tightly.

Further, the safety rod is arranged in the mounting cavity, the end part of the safety rod protrudes out of the side part of the first cuff body, a window which can be convenient for poking the safety rod is arranged between the protection body and the first cuff body, the safety rod can move back and forth relative to the first cuff body, and the first bulge can be avoided or limited by abutting with the first bulge. The safety lever is exposed at the window, the safety lever is required to be stirred only from the window, but the safety lever cannot be stirred from other positions, so that false touch is not easy to cause, the safety is opened when the safety is not ensured, convenience in the safety is ensured, and the normal use function of handcuffs is also ensured.

Further, a second protrusion which can be abutted against the first protrusion and a first groove which can avoid the first protrusion are arranged on the safety rod, and the first groove is arranged beside the second protrusion. The second bulge is used for being matched with the first bulge, so that the limit of the safety bar to the backstop is realized when the safety is opened, the backstop is prevented from swinging relative to the first cuff body, and the second cuff body cannot rotate relative to the first cuff body. The first groove is used for avoiding the first bulge, so that when the safety is closed, the backstop can swing relative to the first cuff body to compress the elastic sheet, so that a movable space is reserved for the second ratchet, and the second cuff body can rotate anticlockwise relative to the first cuff body, and the cuff loading operation is realized.

Further, the end part of the bumper close to the protective body is provided with anti-slip ribs. The anti-skid ribs can play an anti-skid role, and are convenient for manually poking the safety rod.

Further, a rotating shaft is arranged at the end part of the non-return piece, a second groove is arranged in the mounting cavity, the rotating shaft is arranged in the second groove, the bottom of the non-return piece, which is close to the rotating shaft, is abutted against the inner wall at one side of the mounting cavity, the first ratchet is arranged at the bottom of the non-return piece, which is far away from the rotating shaft, one side of the elastic piece is abutted against the top of the non-return piece, and the other side of the elastic piece is abutted against the bottom of the safety rod; the non-return piece can compress the spring plate when being stressed so as to swing towards the inner side of the installation cavity. The non-return piece can swing up and down by taking the rotating shaft as the center, when the top of the second ratchet wheel is abutted against the bottom of the first ratchet wheel, the first ratchet wheel extrudes the non-return piece to swing towards the inner side of the installation cavity, and the elastic piece is compressed, so that the second ratchet wheel at the bottom of the non-return piece has more movable space; when the second ratchet is abutted with the gap between two adjacent first ratchet teeth, the elastic piece is restored under the drive of elastic force, and the elastic piece downwards drives the non-return piece to swing towards the second ratchet teeth, so that the second ratchet teeth are clamped with the first ratchet teeth, and the second ratchet teeth do not have a movable space.

Further, the first handcuff body is provided with a safety poking hole and a key hole, the safety poking hole and the key hole are communicated with the mounting cavity, the safety poking hole and the key hole are respectively arranged at two ends of the mounting cavity, and the safety poking hole or the key hole can poke the safety rod to move. The safety poking hole and the key hole are through holes, and can poke the safety rod from the safety poking hole or the key hole, wherein the safety poking hole and the key hole are different in that the key hole can poke the limiting block only by inserting a key, the safety poking hole does not need to be operated by a special key, and the safety poking hole can be inserted from the safety poking hole by using the key to poke the safety rod; when the safety lever is shifted from the safety shifting hole to the key hole, the second bulge on the safety lever is abutted with the first bulge on the non-return piece, at the moment, the first ratchet of the non-return piece cannot swing upwards under the shifting of the second ratchet, and further the second ratchet is not provided with a movable space, so that the second ratchet is in a locking state, and the second cuff body cannot rotate relative to the first cuff body; the locking state of the handcuffs after the handcuffs are put on is that the safety bar is shifted towards the safety poking hole by inserting a key from a key hole, and the first bulge and the second bulge are released from abutting connection, so that the rotatable state of the second cuff body can be restored. The setting of the insurance poking hole can add a mode to poke the safety lever on the basis of manually poking the safety lever outside the first handcuff body, and is compatible with the operation habit of opening the insurance by using the key. The key hole is also used for inserting a key to unlock the handcuffs.

Further, the safety shifting hole is positioned at one end of the mounting cavity close to the rotating shaft, and the key hole is positioned at the other end of the mounting cavity far away from the rotating shaft; the safety lever is provided with a first poking part near the safety poking hole, the end part of the check piece near the key hole is provided with a second poking part, and the check piece can be forced to compress the elastic sheet from the key hole so as to swing towards the inner side of the installation cavity to unlock the locking mechanism. The key hole is arranged at the end part of the mounting cavity, which is far away from the rotating shaft, and can be used for poking the safety rod to align the first groove with the first bulge so as to close the safety; the ratchet wheel can also be used for poking the backstop, so that the backstop compresses the elastic sheet, and further, a movable space is vacated for the second ratchet teeth, and the second cuff body can rotate relative to the first cuff body. Preferably, the first poking part is of an arc structure, so that the safety rod is conveniently poked from the safety poking hole; the second stirring part is of a convex structure, so that the backstop is convenient to stir from the key hole.

Further, a key for unlocking and being inserted into the safety poking hole or the key hole is also included. The key can be used for poking the backstop and unlocking handcuffs; the safety lever can also be used for poking the safety lever to perform the operation of opening or closing the safety.

Further, the first handcuff assembly is identical in structure to the second handcuff assembly. The second handcuff assembly and the first handcuff assembly can be of the same structure and the same principle, so that the handcuffs of the utility model are formed together.

Compared with the prior art, the utility model has the beneficial effects that:

the safety rod is outwards extended to the side part of the first copying body to be changed into an operation device of the safety, so that the safety rod can be accurately and quickly shifted through the cooperation of the window and the anti-skid rib on the safety rod by manpower, the safety can be conveniently, quickly and simultaneously conveniently opened, the second bulge of the safety rod is in butt joint limit with the first bulge of the non-return part, and improper operation of a controlled person is avoided; the time from putting on handcuffs to putting on the handcuffs is saved for the controlled personnel; meanwhile, a protective body is arranged on the side part of the first copying body and used for protecting the safety rod, so that the safety rod is prevented from being touched by mistake when the handcuffs are used, and the use of the handcuffs is further affected. The safety lever can also be linked with the safety lever shifting hole, and is compatible with two operations of opening the safety lever by manually shifting and shifting the safety lever from the safety lever shifting hole through a key.

Drawings

Fig. 1 is a schematic structure of a safety handcuff with a protective device according to the present utility model.

Fig. 2 is a schematic view showing the structure of the first handcuff assembly of the present utility model.

Fig. 3 is a partial cross-sectional view of the first handcuff assembly of the present utility model at the first cuff body.

Fig. 4 is a schematic view of the structure of the present utility model in a safety open state.

Fig. 5 is a schematic view of the structure of the present utility model in the safety closed state.

The graphic indicia are illustrated as follows:

1. a first cuff body; 11. installing a cavity; 12. a second groove; 13. a safety poking hole; 14. a key hole; 2. a second cuff body; 21. a second ratchet; 3. a locking mechanism; 31. a non-return element; 311. a first ratchet; 312. a first protrusion; 313. a rotating shaft; 314. a second toggle part; 32. a spring plate; 4. a bumper; 41. a second protrusion; 42. a first groove; 43. an anti-slip rib; 44. a first toggle part; 5. a protective body; 51. a window; 101. a first handcuff assembly; 102. a second handcuff assembly; 103. a chain; 104. a key.

Detailed Description

The utility model is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

Example 1

Referring to fig. 1 to 5, a first embodiment of a safety handcuff with a protection device according to the present utility model includes a first handcuff assembly 101, a second handcuff assembly 102, and a chain 103, wherein the first handcuff assembly 101 and the second handcuff assembly 102 are fixedly connected by the chain 103; the first handcuff assembly 101 comprises a first cuff body 1, a second cuff body 2, a locking mechanism 3, a safety lever 4 and a protective body 5, wherein one end of the second cuff body 2 is hinged with one end of the first cuff body 1, the other end of the second cuff body 2 is a free end, a chain 103 is connected with the first cuff body 1, and the first cuff body 1 and the second cuff body 2 can relatively rotate to form a closed space for the handcuffs of a controlled person, and the handcuffs can be opened by rotation to release the controlled person; the other end of the first cuff body 1 is provided with an open mounting cavity 11, the locking mechanism 3 and the safety rod 4 are arranged in the mounting cavity 11, the locking mechanism 3 can swing up and down relative to the first cuff body 1, a closed space is formed between the first cuff body 1 and the second cuff body 2 by the locking mechanism 3, and then the locking mechanism is locked by the rear cooperative safety rod 4 to prevent controlled personnel from struggling off; the safety bar 4 can move left and right relative to the first cuff body 1, and the opening and closing of the safety are realized through the left and right movement of the safety bar 4 so as to limit the movement of the locking mechanism 3 or release the limitation; the protective body 5 is arranged on the side part of the first cuff body 1, part of the safety bar 4 protrudes out of the side part of the first cuff body 1, the protective body 5 is arranged on the side of the safety bar 4 and wraps the safety bar 4 partially, the protective body 5 plays a protective role on the end part of the safety bar 4, the safety bar 4 is prevented from being touched by mistake, and the safety is prevented from being opened by mistake, so that the normal use of handcuffs is prevented from being influenced; the free end of the second cuff body 2 can be inserted into the first cuff body 1 and then clamped and locked with the locking mechanism 3, and the safety rod 4 can be poked from the gap between the first cuff body 1 and the protective body 5 to move back and forth so as to carry out abutting limit or releasing limit on the locking mechanism 3. The second handcuff assembly 102 has the same structure as the first handcuff assembly 101 and is also composed of the same structure; the first handcuff assembly 101 and the second handcuff assembly 102 are connected together through the chain 103, so that the two hands of the controlled person are restrained.

Specifically, the locking mechanism 3 includes a backstop 31 and a spring plate 32, the backstop 31 and the spring plate 32 are both installed in the installation cavity 11, the backstop 31 is rotationally connected with the first handcuff assembly 1, one side of the spring plate 32 is abutted against the backstop 31, the other side is abutted against the bottom of the safety lever 4, the backstop 31 is enabled to realize the backstop function by the elasticity of the spring plate 32, and the second handcuff assembly 2 can also be enabled to rotate anticlockwise relative to the first handcuff assembly 1 so as to realize the closing of the first handcuff assembly 101; the bottom of the non-return piece 31 is provided with a plurality of first ratchets 311, the free end of the second cuff body 2 is provided with a plurality of second ratchets 21, the first ratchets 311 can be clamped with the second ratchets 21, under the action of the elasticity of the elastic sheet 32, the first ratchets 311 of the non-return piece 31 can be abutted and clamped with the second ratchets 21, and when the second cuff body 2 is pushed to rotate anticlockwise, the second ratchets 21 apply upward thrust to the first ratchets 311, the non-return piece 31 compresses the elastic sheet 32 to move upwards and continuously push the second cuff body 2, the second ratchets 21 can slide relative to the first ratchets 311, so that a closed space formed by the second cuff body 2 and the first cuff body 1 is reduced; however, under the restoring force of the elastic sheet 32, when the second cuff body 2 is released, the backstop 31 moves downwards, so that the first ratchet 311 is abutted and clamped with the second ratchet 21, and the second cuff body 2 cannot rotate relative to the first cuff body 1; because the first ratchet 311 and the second ratchet 21 are arranged in the shape, the first ratchet 311 is a unidirectional ratchet, and if the second cuff body 2 is rotated clockwise, the first ratchet 311 is blocked with the second ratchet 21, so that the second cuff body 2 cannot rotate clockwise, i.e. a controlled person cannot break loose at will; the top side of the backstop 31 is provided with a first bulge 312, and the bumper 4 can avoid the first bulge 312 or be in abutting limit with the first bulge 312 when moving back and forth. The safety rod 4 is arranged in the mounting cavity 11, the end part of the safety rod protrudes out of the side part of the first cuff body 1, a window 51 which is convenient for poking the safety rod 4 is arranged between the protective body 5 and the first cuff body 1, the safety rod 4 can move back and forth relative to the first cuff body 1, and the first bulge 312 can be avoided or limited by abutting with the first bulge 312. Further, the bumper 4 is provided with a second protrusion 41 capable of abutting against the first protrusion 312, and a first groove 42 capable of avoiding the first protrusion 312, and the first groove 42 is provided on the right side of the second protrusion 41. When the safety is opened, the first protrusion 312 abuts against the second protrusion 41 to limit, so that the safety rod 4 limits the backstop 31, and the backstop 31 is prevented from swinging relative to the first cuff body 1, so that the second cuff body 2 cannot rotate relative to the first cuff body 1. When the safety is closed, the first protrusion 312 is opposite to the first groove 42, the first groove 42 can form avoidance of the first protrusion 312, the backstop 31 can swing relative to the first cuff body 1 to enable the first protrusion 312 to enter into the first groove 42, the elastic sheet 32 is compressed, and further, a movable space is reserved for the second ratchet 21, so that the second cuff body 2 can rotate anticlockwise relative to the first cuff body 1, and the cuff loading operation is realized. Preferably, the end of the bumper 4 close to the shielding body 5 is provided with anti-slip ribs 43. The anti-skid ribs 43 can play a protective role, and are convenient for manually poking the safety rod 4.

As an implementation manner of this embodiment, the end portion of the non-return element 31, which is close to the protection body 5, is provided with a rotation shaft 313, the installation cavity 11 is provided with a second groove 12, the second groove 12 is communicated with the installation cavity 11, the rotation shaft 313 is installed in the second groove 12, the shape of the second groove 12 is matched with the shape of the rotation shaft 313, and shaking of the rotation shaft 313 in the second groove 12 is reduced; the bottom of the backstop 31 close to the rotating shaft 313 is abutted with the inner wall of one side of the installation cavity 11, the first ratchet 311 is arranged at the bottom of the backstop 31 far away from the rotating shaft 313, the bottom side of the elastic sheet 32 is abutted with the top of the backstop 31, the top side is abutted with the bottom of the safety rod 4, and the safety rod 4 is arranged at the top of the installation cavity 11; the check member 31 is biased to swing the compressible spring 32 inward of the mounting cavity 11. The second cuff body 2 is rotated clockwise, and the compressible elastic sheet 32 swings to the upper side of the installation cavity 11 when the second ratchet 21 pushes the first ratchet 311, so that a movable space is vacated for the second ratchet 21, and the second cuff body 2 can be smoothly rotated, so that a closing space formed by the first cuff body 1 and the second cuff body 2 is reduced.

As an embodiment of this example, the first cuff body 1 is provided with a safety pulling hole 13 and a key hole 14, the safety pulling hole 13 and the key hole 14 are both communicated with the mounting cavity 11, the safety pulling hole 13 and the key hole 14 are respectively arranged at two ends of the mounting cavity 11, and the safety lever 4 can be pulled to move from the safety pulling hole 13 or the key hole 14. Wherein, the safety poking hole 13 is positioned at one end of the installation cavity 11 close to the rotation shaft 313, and the key hole 14 is positioned at the other end of the installation cavity 11 far away from the rotation shaft 313; the bumper 4 is provided with a first poking part 44 near the bumper poking hole 13, the end part of the backstop 31 near the key hole 14 is provided with a second poking part 314, and the backstop 31 can be forced from the key hole 14 to compress the elastic sheet 32 to swing towards the inner side of the mounting cavity 11 so as to unlock the locking mechanism 3.

Example 2

This embodiment is a second embodiment of a safety handcuff with a protection device, which is similar to embodiment 1, except that it further includes a key 104 for unlocking and which can be inserted into the safety poking hole 13 or the key hole 14. The key 104 is used as a mating facility for unlocking the first and second handcuff assemblies 101 and 102 when they are in the locked state, specifically, by inserting the key 104 into the key hole 14 and pulling the second pulling part 314, the backstop 31 compresses the elastic piece 32 to swing, thereby freeing up space for the second ratchet 21 and rotating the second cuff body 2 clockwise relative to the first cuff body 1 to unlock the handcuff assemblies; the key 104 may also be used to open or close the safety, in particular, to release the safety by inserting the end of the safety lever 4 from the keyhole 14 such that the safety lever 4 protrudes out of the side of the first cuff body 1 and the first groove 42 is aligned with the first protrusion 312 to release the limit of the safety lever 4 to the backstop 31; or the key 104 is inserted from the safety poking hole 13 to poke the first poking part 44, so that the safety lever 4 moves towards the direction of the key hole 14, and the second bulge 41 is abutted with the first bulge 312 to form the limit of the check member 31, so that the safety is opened.

Example 3

This embodiment is a third embodiment of a safety handcuff with a protection device, which is similar to embodiment 2, except that the second handcuff assembly 102 adopts a different structure from the first handcuff assembly 101. Other configurations of the second cuff assembly 102 are possible within the knowledge of those skilled in the art.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. An insurance handcuff with a protection device comprises a first handcuff component (101), a second handcuff component (102) and a chain (103), wherein the first handcuff component (101) and the second handcuff component (102) are connected through the chain (103); the safety handcuff is characterized in that the first handcuff assembly (101) comprises a first cuff body (1), a second cuff body (2), a locking mechanism (3), a safety rod (4) and a protection body (5), one end of the second cuff body (2) is hinged with one end of the first cuff body (1), the other end of the second cuff body (2) is a free end, a chain (103) is connected with the first cuff body (1), an open installation cavity (11) is arranged at the other end of the first cuff body (1), the locking mechanism (3) and the safety rod (4) are arranged in the installation cavity (11) and are movably connected with the first cuff body (1), the protection body (5) is arranged at the side part of the first cuff body (1), the protection body (5) is arranged at the side of the safety rod (4) in a part protruding mode, the safety rod (4) is wrapped by the side of the protection body, and the free end of the second cuff body (2) can be inserted into the first cuff body (1) to lock the locking mechanism (3) or release the locking mechanism (4) from the first cuff body (1) to the limit position, and the locking mechanism (3) can be locked or released from the limit position of the locking mechanism (4) to move back and forth.

2. The safety handcuffs with the protection device according to claim 1, wherein the locking mechanism (3) comprises a non-return piece (31) and an elastic piece (32), the non-return piece (31) and the elastic piece (32) are both arranged in the installation cavity (11), the non-return piece (31) is rotationally connected with the first cuff body (1), one side of the elastic piece (32) is abutted with the non-return piece (31), the other side of the elastic piece is abutted with the safety rod (4), a plurality of first ratchets (311) are arranged on one side of the non-return piece (31), a plurality of second ratchets (21) are arranged at the free end of the second cuff body (2), the first ratchets (311) can be clamped with the second ratchets (21), a first bulge (312) is arranged on the other side of the non-return piece (31), and the safety rod (4) can make a back and forth movement to avoid or limit the first bulge (312) in an abutted mode.

3. Safety handcuffs with protection device according to claim 2, characterized in that the safety bar (4) is mounted in the mounting cavity (11) and the end part of the safety bar protrudes out of the side part of the first cuff body (1), a window (51) which is convenient for pulling the safety bar (4) is arranged between the protection body (5) and the first cuff body (1), the safety bar (4) can move back and forth relative to the first cuff body (1), and the first bulge (312) can be avoided or limited by abutting with the first bulge (312).

4. A safety handcuff with a protection device according to claim 3, characterized in that a second protrusion (41) capable of abutting against the first protrusion (312) and a first groove (42) capable of avoiding the first protrusion (312) are provided on the safety lever (4), and the first groove (42) is provided beside the second protrusion (41).

5. A safety handcuff with a protection device according to claim 3, characterized in that the end of the safety bar (4) close to the protection body (5) is provided with anti-slip ribs (43).

6. The safety handcuffs with the protection device according to claim 4, wherein the end part of the non-return element (31) is provided with a rotation shaft (313), the installation cavity (11) is provided with a second groove (12), the rotation shaft (313) is installed in the second groove (12), the bottom of the non-return element (31) close to the rotation shaft (313) is abutted with the inner wall at one side of the installation cavity (11), the first ratchet (311) is arranged at the bottom of the non-return element (31) far away from the rotation shaft (313), one side of the elastic sheet (32) is abutted to the top of the non-return element (31), and the other side of the elastic sheet is abutted with the bottom of the safety rod (4); the non-return element (31) can compress the spring sheet (32) to swing towards the inner side of the installation cavity (11) when being stressed.

7. The safety handcuffs with the protection device according to claim 6, wherein the first cuff body (1) is provided with a safety poking hole (13) and a key hole (14), the safety poking hole (13) and the key hole (14) are both communicated with the installation cavity (11), the safety poking hole (13) and the key hole (14) are respectively arranged at two ends of the installation cavity (11), and the safety bar (4) can be poked to move from the safety poking hole (13) or the key hole (14).

8. The safety handcuff with the protection device according to claim 7, wherein the safety poking hole (13) is positioned at one end of the installation cavity (11) close to the rotation shaft (313), and the key hole (14) is positioned at the other end of the installation cavity (11) far from the rotation shaft (313); a first poking part (44) is arranged at the position, close to the safety poking hole (13), of the safety lever (4), a second poking part (314) is arranged at the end, close to the key hole (14), of the check member (31), and the check member (31) can be forced to compress the elastic sheet (32) from the key hole (14) so as to swing towards the inner side of the installation cavity (11) to unlock the locking mechanism (3).

9. The safety handcuff with the protection device according to claim 7, further comprising a key (104) for unlocking and being insertable into the safety toggle hole (13) or the key hole (14).

10. Safety handcuff with protection device according to any of claims 1 to 9, characterized in that the first handcuff assembly (101) is structurally identical to the second handcuff assembly (102).

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