Police fetter with built-in rotating shaft double-locking mechanism

Abstract

The utility model belongs to the technical field of police fetters, in particular to a police fetter with a built-in rotating shaft double-locking mechanism, which comprises a limit ring, a lock hole and a connecting block, the lock hole is arranged at the side end of the limit ring, and the connecting block is arranged on the outer side of the middle of the limit ring. By arranging the opposite ratchet bars, the floating locking bars, the clamping teeth and the inserting grooves, when the structure is used, an operator opens the limiting ring through rotation of the serial connection shaft and then sleeves the ankle of a prisoner, the ankle is completely surrounded by the limiting ring and then the limiting ring is closed, the two opposite ratchet bars are inserted into the inserting grooves in the corresponding positions respectively, and then the prisoner is locked. The opposite ratchet bars are inserted into the inserting grooves, ratchets at the upper ends of the opposite ratchet bars make contact with clamping teeth at the lower ends of the floating locking bars, the floating locking bars are arranged in the inserting grooves, the opposite ratchet bars at the two ends can be controlled at the same time, and therefore the fetters can guarantee rapid unlocking and locking, and meanwhile the locking stability can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of police shackles, in particular to a police shackle with a built-in rotating shaft double locking mechanism. Background Art

[0002] Police leg shackles are a type of police and prison device used to restrain an inmate's feet and prevent escape. They typically consist of two parts: a ring and a chain. The ring is placed around the inmate's ankle and secured with a lock or rivets, while the chain connects the rings to restrict stride length. The primary function of police leg shackles is to prevent escape, achieved through their weight and stride length restriction. Heavy shackles make it difficult for the inmate to walk quickly, while stride length is limited by controlling the length of the chain. These leg shackles provide added security for detaining dangerous inmates.

[0003] The existing technology has the following deficiencies: The prior art, "A rotating shaft double locking mechanism for police shackles," with publication number CN207485157U, states that "its structure includes a shackle body, a fan beam, a rotating shaft, a shackle control box, an arc-shaped gear buckle, a limit gear portion, and a super anti-theft lock. The shackle control box is provided on the right side of the shackle body, the super anti-theft lock is provided on the top of the shackle control box, the limit gear portion is provided on the right inner side of the shackle control box, the fan beam is provided on the left side of the shackle body, the arc-shaped gear buckle is connected to the left side of the fan beam, a rotating shaft is provided between the shackle body and the fan beam, the connecting member is fixedly connected to a first screw hole inside the rotating shaft by a first internal hexagonal screw, and the connecting member is fixedly connected to a second screw hole inside the rotating shaft by a second internal hexagonal screw."

[0004] The above structure solves the problem of the rotating shaft easily falling off by setting up the shackle main body, fan beam, rotating shaft, shackle control box, arc-shaped gear buckle, limit gear part and super anti-theft lock. However, this structure only makes improvements to the rotating shaft part, and the current shackles are all locked by a one-way lock buckle. This method is not reliable enough and there is a risk of prisoners breaking free. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a police leg iron with a built-in rotating shaft and double locking mechanism, which solves the problem that the current one-way lock is not firm enough.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a police leg iron with a built-in rotating shaft double locking mechanism, comprising a limiting ring, a locking hole, and a connecting block, wherein the locking hole is provided at a side end of the limiting ring, the connecting block is provided at the outer side of the middle portion of the limiting ring, and the inner end of the connecting block is further provided with a serial connecting shaft;

[0007] A floating lock bar is further provided inside the limiting ring, and a latching tooth is further provided on the lower end surface of the floating lock bar.

[0008] As an optimal technical solution of the present invention, the limiting ring is an annular tubular structure as a whole, which is divided into two symmetrically distributed parts, and the relatively connected ends are fixedly connected to the connecting blocks. The serial shaft passes through the two groups of connecting blocks and establishes a movable connection on both sides of the limiting ring.

[0009] As an optimal technical solution of the present invention, the limiting ring also includes a slot and opposing ratchet bars. The slots are provided in two groups and are opened on the inner end faces of both ends of the limiting ring. The opposing ratchet bars are fixedly connected to the end of the limiting ring, and the inside of the slots is close to the floating lock bar.

[0010] As a preferred technical solution of the present invention, the floating lock bar is a strip-shaped structure as a whole, and is inserted into the limiting ring as a whole, wherein the latch teeth are distributed at the ends of both sides of the floating lock bar close to the opposite ratchet bar.

[0011] As a preferred technical solution of the present invention, the lock hole passes through from the outside to the inside of the limiting ring and is located at the lower end of the floating lock bar.

[0012] As a preferred technical solution of the present invention, the ratchet teeth on the upper end of the opposing ratchet bars and the latching teeth on the lower end of the floating lock bar are distributed facing each other in an arc shape, and a movable connection relationship is established by latching.

[0013] As a preferred technical solution of the present invention, the maximum angle that the limiting ring and the connecting block can rotate through the serial shaft is 150°.

[0014] Compared with the existing technology, the utility model provides a police leg iron with a built-in rotating shaft and double locking mechanism:

[0015] The police leg shackles with a built-in rotating shaft double locking mechanism are provided with opposing ratchet bars, a floating lock bar, latch teeth and a slot. When the structure is used, the operator rotates the limit ring through the serial shaft to open it, and then puts it on the prisoner's ankle. After the ankle is completely surrounded by the limit ring, the limit ring is closed, and the two sets of opposing ratchet bars are respectively inserted into the slots at corresponding positions. After the opposing ratchet bars are inserted into the slots, the ratchet teeth at the upper ends of the opposing ratchet bars contact the latch teeth at the lower end of the floating lock bar, and continue to penetrate deeper through the arc surface contact until they reach the appropriate position, and the opposing ratchet bars and the floating lock bar are locked with each other. At this time, the limit ring is locked and cannot be opened. When the structure needs to be opened, the operator only needs to insert the key into the lock hole and rotate it. The key pushes the floating lock bar upwards during rotation, and the latch teeth are disengaged from the ratchet teeth at the upper end of the opposing ratchet bars. At this time, the limit ring can be opened by toggling the limit ring to both sides.

[0016] The above settings and processes can make the structure have the following beneficial effects:

[0017] By setting up two sets of opposing ratchet bars and slots, the limit ring can be locked through bidirectional locking when closed, and by setting up a floating lock bar inside the slot, the opposing ratchet bars at both ends can be controlled at the same time, so that the shackles can ensure quick unlocking and locking while greatly increasing the stability when locked. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the lock hole position structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the installation position structure of the floating lock bar of the utility model;

[0021] Figure 4 This is a schematic diagram of the position of the latch teeth of the present utility model.

[0022] In the figure: 1. Limiting ring; 101. Slot; 102. Opposite ratchet bar; 2. Lock hole; 3. Connecting block; 4. Serial shaft; 5. Floating locking bar; 6. Tooth. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Please refer to this embodiment: A police leg iron with a built-in rotating shaft double locking mechanism includes a limiting ring 1, a locking hole 2, and a connecting block 3. The locking hole 2 is provided at the side end of the limiting ring 1, and the connecting block 3 is provided on the outside of the middle part of the limiting ring 1. The inner end of the connecting block 3 is also provided with a serial shaft 4.

[0025] A floating lock bar 5 is further provided inside the limiting ring 1 , and a latching tooth 6 is further provided on the lower end surface of the floating lock bar 5 .

[0026] In this embodiment, the limiting ring 1 is an annular tubular structure as a whole, which is symmetrically distributed in two parts, and the opposite ends are fixedly connected to the connecting blocks 3. The serial shaft 4 passes through the two sets of connecting blocks 3 and establishes a movable connection between the two sides of the limiting ring 1; the limiting ring 1 also includes a slot 101 and opposing ratchet bars 102. The slots 101 are provided in two groups and are provided on the internal end surfaces of both ends of the limiting ring 1. The opposing ratchet bars 102 are fixedly connected to the ends of the limiting ring 1, and the interior of the slots 101 is in close contact with the floating lock bar 5.

[0027] Specifically, such as Figure 1 and Figure 3 As shown, the serial shaft 4 passes through the connecting blocks 3 at the ends of both sides of the limiting ring 1, and enables the connecting blocks 3 and the limiting ring 1 to have a rotation effect;

[0028] In this embodiment, the floating lock bar 5 is a strip-shaped structure and is inserted into the interior of the limiting ring 1. The latch teeth 6 are distributed on both ends of the floating lock bar 5 near the opposite ratchet bars 102. The lock hole 2 runs from the outside to the inside of the limiting ring 1 and is located at the lower end of the floating lock bar 5.

[0029] Specifically, such as Figure 2 、 Figure 3 、 Figure 4 As shown, the floating lock bar 5 passes through the interior of the limiting ring 1, and the latch teeth 6 are distributed near the end of the limiting ring 1, so that the opposing ratchet bar 102 can quickly establish connection with the latch teeth 6;

[0030] In this embodiment, the ratchet teeth at the upper end of the opposing ratchet bar 102 and the latch teeth 6 at the lower end of the floating lock bar 5 are distributed in an arc-shaped manner, and a movable connection relationship is established through latching; the maximum angle that the limit ring 1 and the connecting block 3 can rotate through the serial shaft 4 is 150°.

[0031] The working principle and usage process of the present invention are as follows: when the structure is used, the operator rotates the limit ring 1 to open it through the serial shaft 4, and then puts it on the prisoner's ankle. After the ankle is completely surrounded by the limit ring 1, the limit ring 1 is closed, so that the two sets of opposing ratchet bars 102 are respectively inserted into the slots 101 at the corresponding positions. After the opposing ratchet bars 102 are inserted into the slots 101, the ratchet teeth at the upper end thereof contact the latch teeth 6 at the lower end of the floating lock bar 5, and continue to deepen through the arc surface docking until they reach the appropriate position, and the opposing ratchet bars 102 and the floating lock bar 5 are locked with each other. At this time, the limit ring 1 is locked and cannot be opened. When the structure needs to be opened, the operator only needs to insert the key into the lock hole 2 and rotate it. The key during rotation pushes the floating lock bar 5 upward, and disengages the latch teeth 6 from the ratchet teeth at the upper end of the opposing ratchet bars 102. At this time, the limit ring 1 can be opened by shifting it to both sides.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A police leg iron with a built-in rotating shaft double locking mechanism, comprising a limiting ring (1), a locking hole (2), and a connecting block (3), wherein the locking hole (2) is arranged at the side end of the limiting ring (1), the connecting block (3) is arranged outside the middle of the limiting ring (1), and the inner end of the connecting block (3) is further provided with a serial connecting shaft (4), characterized in that: A floating lock bar (5) is further provided inside the limiting ring (1), and a latching tooth (6) is further provided on the lower end surface of the floating lock bar (5).

2. The police anklet with a built-in rotating shaft double locking mechanism according to claim 1, characterized in that: The limiting ring (1) is an annular tubular structure as a whole, and is symmetrically distributed in two parts. The relatively connected ends are fixedly connected to the connecting blocks (3). The serial connection shaft (4) passes through the two groups of connecting blocks (3) and establishes a movable connection between the two sides of the limiting ring (1).

3. The police anklet with a built-in rotating shaft double locking mechanism according to claim 1, characterized in that: The limiting ring (1) further comprises a slot (101) and an opposing ratchet bar (102), wherein the slot (101) is provided with two groups and is opened on the inner end faces at both ends of the limiting ring (1), and the opposing ratchet bar (102) is fixedly connected to the end of the limiting ring (1), and the interior of the slot (101) is tightly attached to the floating lock bar (5).

4. The police anklet with a built-in rotating shaft double locking mechanism according to claim 3, characterized in that: The floating lock bar (5) is a strip-shaped structure as a whole and is inserted into the interior of the limiting ring (1) as a whole, wherein the latch teeth (6) are distributed at the ends of both sides of the floating lock bar (5) close to the opposite ratchet bar (102).

5. The police anklet with a built-in rotating shaft double locking mechanism according to claim 1, characterized in that: The locking hole (2) passes through from the outside to the inside of the limiting ring (1) and is located at the lower end of the floating locking bar (5).

6. The police anklet with a built-in rotating shaft double locking mechanism according to claim 3, characterized in that: The ratchet teeth at the upper end of the opposing ratchet bar (102) and the latching teeth (6) at the lower end of the floating lock bar (5) are distributed facing each other in an arc, and a movable connection relationship is established through latching.

7. The police anklet with a built-in rotating shaft double locking mechanism according to claim 1, characterized in that: The maximum angle at which the limiting ring (1) and the connecting block (3) can rotate via the serial connection shaft (4) is 150°.

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