JP3232192B2 - Handcuffs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handcuff used for arresting or detaining a criminal or as a guard in a prison.

[0002]

2. Description of the Related Art Conventionally, handcuffs are disclosed in Japanese Patent Publication No. 59-52276.
As disclosed in Japanese Patent Application Laid-Open Publication No. H10-260, in order to lock the handcuff hung on the wrist so that the ring diameter does not expand or contract, a tooth hole is formed on the tip side surface of the arc-shaped rotating body, and inside the handcuff. A gear that engages with the tooth hole, a lock that engages with the gear, and a lock that locks the lock at a predetermined position are provided. The rotating body of the handcuff is rotatably supported by an arc-shaped portion extending from a casing, which is the main body of the handcuff. Further, the lock body is urged by a spring so as to engage with the gear and to be retractable with the rotation of the gear. Further, the lock is rotated by a predetermined angle between a position where the lock is locked so as not to be able to swing and a position where the lock is allowed to swing. The bias is held.

[0003] This handcuff is used in such a manner that when a handcuff is hooked, a rotating body is turned around a wrist to engage a tooth hole with a gear of a casing. At this time, the gear is engaged with the lock, but the lock retracts against the urging force of the spring, and the rotator easily rotates to the thickness of the wrist. In this state, even if the rotating body is pulled in the opening direction, the gear engaged with the tooth hole of the rotating body engages with the lock and the gear rotates only by applying a force in the compression direction and the bending direction to the lock. Without rotating, the rotating body does not swing. Then, the key is inserted into the casing so that the wrist is not further tightened, and the lock is rotated to lock the lock at a position where the lock body does not swing. When unlocking the handcuffs, the lock body is swung to the retracted position by a key. The handcuffs are removed from the wrist by pulling the rotating body.

[0004]

In the case of the above prior art, when a force in the direction of opening the rotating body is applied to the tablet, a force in the compression direction and a bending moment act on the tablet, Since the force is applied to the lock in a direction in which the lock deviates from the state where the lock locks the predetermined position of the lock, the position of the lock may become unstable and the lock may come off. There was a problem. Further, when a stronger force is applied, the gear may wind around the lock body, rotate, and the rotating body may come off. Further, when the lock is rotated to the unlocking position, the lock is rotated by the key. Therefore, it is necessary to form a wide portion for retracting the lock on the key. The reaction when turning the lock is
This caused the neck of the key to twist.

[0005] The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide a handcuff having a simple structure, high strength, and capable of securely locking.

[0006]

According to the present invention, there is provided an arc-shaped rotating body, a casing for rotatably holding the rotating body, and a casing at a base end of the casing. A space through which the tip of the rotating body can be inserted is formed, and at the tip of the rotating body,
A plurality of tooth holes are formed, a gear engaged with the tooth hole, a lock engaged with the gear, a spring member biasing the lock in the engagement direction, A lockable lock is provided at a position where the lock is engaged with the gear and at a position retracted from the gear, and the lock is engaged with the gear.
In this state, a force acts in the direction in which the rotating body comes off the casing.
In this case, the line of action of the force acting on the tablet via the gear causes the tablet to be compressed substantially toward the rotation axis of the tablet.
This is handcuffs configured to act in different directions .

The lock engages the lock with the gear.
Lock the lock and the lock with the lock
The abutting position is such that the rotating body is
When a force in the direction of pushing into the housing is applied,
The point of action of the force acting on the lock and the center of rotation of the lock
With respect to a line connecting the door, located on the opposite side to the rotational axis of the lock body. Further, a line connecting the contact position between the tablet and the tablet and the axis of rotation of the tablet, and a line connecting the contact position between the tablet and the tablet and the center of rotation of the tablet. The angle formed is 90 degrees or less.

[0008] The lock body has a locking portion for the lock.
A notch is formed to be positioned and engaged. And
Due to the rotation of the lock, the locking portion is one of the cutout portions.
The lock body is brought into contact with the gear by the lock
The locked state and the rotation of the lock
The lock is released and the locking portion is
And the lock body is engaged with the gear,
Due to the rotation of the locking pin, the above-mentioned locking part is the other of the above-mentioned notch part.
The lock body is disengaged from the gear by the lock in contact with the end.
In each of the retracted states, the lock of the lock is inserted into the cutout.
The stop is located. The lock has a key
A mating hole is formed, and the key contacts the engaging hole,
The child is rocked.

[0009]

In the handcuff according to the present invention, when a force is applied to expand the rotating body, the force applied to the locking body from the gear is applied only in the compression direction toward the center of rotation of the locking body. The force in the direction of releasing the engagement between the body and the lock does not act, and the lock and the gear are not easily deformed or broken. Also, even if a force is applied to close the rotating body while the lock is in the locked state, the force acting on the lock via the gears compresses the lock in the direction of its rotation axis. The locking force acts in a direction to more securely engage the lock with the lock body.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 5 show an embodiment of the present invention. A handcuff of this embodiment comprises an arc-shaped rotating body 10 and a casing 14 having a casing 12. The rotating body 10 is made of an aluminum alloy, and has tooth holes 16 formed of a plurality of holes at regular intervals on the outer side surface in about half of the free end 11 side. In addition, along the tooth holes 16, on the side faces of the rotating body 10 facing each other,
A pair of arc-shaped grooves 17 are formed.

The casing 14 is a pair of aluminum alloy plate-like members, each having an arc-shaped portion 15 at the distal end, and a base end of the rotating body 10 between the arc-shaped portions 15. The part is supported by a pin 19. The casing 12 is composed of casings 14 arranged opposite to each other, and a pair of frames 18 is sandwiched between the peripheral edges thereof. The support plate 20 provided is provided. Protrusions 22 slightly protruding from the side surface are formed in the vicinity of the arcuate portion 15 of the casing 14, and the protrusions 22 engage with the arcuate grooves 17 as the rotating body 10 rotates, It guides in the moving direction.

A frame 18 provided in the casing 12 is fixed to the casing 14 by rivets 23, and a space is formed between the pair of casings 14 by the frame 18. A first rotating shaft 24 and a second rotating shaft 25 projecting from the support plate 20 are provided in the space of the casing 12, and further, a supporting column 26 and a retaining column 27 are integrally projectingly provided. ing. A gear 30 having projections at an equal pitch is supported on the first rotating shaft 24, and a base end of a lock 32 is supported on the second rotating shaft 25. Further, the support column 26 holds a leaf spring 34 which is a spring member having one end engaged with the locking column 27 and the other end engaged with the step portion 33 of the lock body 32. The leaf spring 34 is
And urges the lock body 32 toward the gear 30 side.

The lock body 32 has a notch portion 36 formed on one side of a base end portion of the lock body 32, the end contact surface 35 of which contacts the valley portion of the gear 30, and the base end portion supported by the second rotating shaft 25. ing. In the vicinity of the notch 36, a lock 40 formed corresponding to a key insertion hole 38 formed in the casing 14 on one side is located, and an engagement hole 42 of the lock 40 is formed. It is formed coaxially with the key insertion hole 38. Further, a locking portion 43 is provided at the tip of the lock 40.
The locking portion 43 is formed by the notch portion 36 of the lock body 32.
And the engaged portions 37 a, 3 on both sides of the notch 36.
7b. And this lock 4
Key 4 inserted from the key insertion hole 38 into the engagement hole 42
1 is inserted and abuts.

A first concave surface 50 and a second concave surface 52 are formed on the side of the lock 40 opposite to the locking portion 43. The first and second concave surfaces 50 and 52 are provided on an elastic body 54 such as a coil spring or rubber attached to the support plate 20 in the casing 12.
Is to be engaged. The first concave surface 50 engages with the elastic body 54 in a state where the locking portion 43 of the lock 40 is located in the space of the notch 36 of the lock body 32, and the second concave surface 52 Is engaged with the elastic body 54 at a position where it contacts the locked part 37b of the lock body 32.

At the lower end of the casing 12, a connecting chain 44 for connecting a pair of handcuffs and a ring member 46 for holding the connecting chain 44 on the casing 14 side are provided. One end of the ring member 46 has an annular shape and is connected to the connection chain 44, and the other end has an enlarged portion 47 having a large diameter at the tip of the neck portion 45. The expanded portion 47 is engaged with a hole 48 formed in each support plate 20 of the housing 12 to prevent the expansion. The neck 45 is inserted into a gap between the pair of frame bodies 18 and is held between the casings 14 on both sides.

The method of using the handcuffs of this embodiment is as follows. First, when the handcuffs are hooked, the rotating body 10 is turned around the wrist so that the tooth holes 16 at the tips thereof are engaged with the gears 30 of the casing 12. .
At this time, as shown in FIG.
Engages with the projections 22 of the housing 12 to stably swing the rotating body 10. At this time, the lock body 32 is engaged with the gear 30, but the locking portion 43 of the lock 40 is located in the space inside the notch 36 of the lock body 32, and the lock body 32 is The gear 30 can be retracted against the urging force, and the gear 30 rotates clockwise in the drawing as the rotating body 10 swings. And
The rotating body 10 moves easily until the ring formed by the rotating body 10 and the casing 14 becomes the thickness of the wrist.

When the rotating body 10 is pulled in the opening direction in this state, the gear 30 engaged with the tooth hole 16 of the rotating body 10
Exerts a force in the compression direction on the lock body 32 in an attempt to rotate counterclockwise in the drawing. That is, a first rotating shaft 24 that supports the gear 30 and a second rotating shaft 25 that supports the lock 32.
And the line connecting the point where the contact surface 35 of the lock body 32 abuts on the gear 30 forms a triangle, and even if the gear 30 tries to rotate counterclockwise, the first rotation shaft 24 and the second rotation shaft Since the distance between 25 does not change, the gear 30 cannot rotate counterclockwise from this state unless the gear 30 or the lock body 32 is compressed and crushed. Further, the force acting on the lock body 32 from the gear 30 is generated by the second rotating shaft 2 that supports the lock body 32.
Only the force in the direction that intersects with No. 5, and the useless moment and the force in other directions hardly act on the lock body 32. Therefore, even if the rotating body 10 is pulled in the opening direction, FIG.
As shown in the figure, the lock 32 engages with the gear 30 and the lock 32
Is applied only in the compression direction, the gear 30 does not rotate at that position, and the rotating body 10 does not swing.

Then, in order to lock the rotating body 10 so as not to tighten the wrist any more, the key 41 is inserted into the key insertion hole 38 of the casing 14 as shown in FIG.
The lock portion 43 is brought into contact with the locked portion 37b of the lock body 32 by rotating the lock member 43 counterclockwise in the drawing. At this time, as shown in FIG. 4, the second concave surface 52 of the lock 40 is engaged with the elastic body 54 to hold the position. In this state, the locking of the handcuffs of this embodiment is completed. Then, in this state, the rotating body 1
Even if it tries to open 0, as described above, the rotating body 10 does not move. Conversely, when the rotating body 10 is to be closed, a clockwise rotating force acts on the gear 30 and the lock body 32 is
Attempts to swing counterclockwise about the second rotation shaft 25 in the drawing. However, in the lock body 32, the locking portion 43 of the lock 40 contacts the engaged portion 37 a of the notch 36, and the head of the locking portion 43 contacts the slope 36 a of the notch 36. Therefore, the lock body 32 does not swing.

At this time, the gear 30, the lock body 32, the lock 40
First, the locking portion 43 of the lock 40 is locked in the lock 3 at a position where the lock 32 is engaged with the gear 30.
The position Q in contact with the second inclined surface 36a is defined by the center of rotation of the lock body 32 with respect to the line connecting the point of action P of the force acting on the lock body 32 from the gear 30 and the center of rotation O of the lock 40. The second rotary shaft 25 is located on the opposite side. In addition, the contact position Q between the locking portion 43 of the lock 40 and the inclined surface 36 a of the lock 32 is such that the second rotation shaft 25 of the lock 32 and the rotation of the lock 40 are centered on the contact position Q. The angle formed by the line connecting the center O is set to 90 degrees or less. Therefore, when the gear 30 tries to rotate clockwise in the drawing, the lock 32
Even if a counterclockwise force is applied to the lock 40, the position Q at which the locking portion 43 abuts is in the above-described positional relationship. To make the lock 40 more reliably come into contact with the locked portion 37b.
It only ensures a locked state by zero. Moreover,
The contact position Q of the lock 40, the second rotation shaft 25, and the rotation center O
Since the angle formed by the line segment connecting the
When 2 attempts to rotate counterclockwise, a counterclockwise force acts on the lock 40 in the same manner as described above.
It is set so that the lock 40 is more reliably brought into contact with the locked portion 37b, and the locked state by the lock 40 is ensured.

When unlocking the handcuffs, the key 41 is inserted through the key insertion hole 38 and inserted into the engagement hole 42 of the lock 40, and as shown in FIG. Turn clockwise. Thereby, the locking portion 43 of the lock 40 contacts the engaged surface 37 a of the notch 36 of the lock body 32 while
The lock body 32 is rotated counterclockwise against the urging force of the leaf spring 34 to bring the state shown in FIG. At this time, the lock 40 rotates clockwise beyond the first concave surface 50 of the lock 40, and the elastic body 54 is compressed and deformed. In this state, the lock body 32 is positioned outside the rotation locus of the gear 30, and the gear 30 can freely rotate. The handcuffs are removed from the wrist by swinging the rotating body 10 in the direction in which the rotating body 10 is spread.

According to the handcuffs of this embodiment, regardless of the direction in which the rotating body is opened or closed after locking, the position is reliably maintained, and no unnecessary force is applied to the lock body 32 or the lock 40. ,
This ensures that the position of the lock body 32 is maintained. Further, the key 41 is simply inserted into the engagement hole 42 of the lock 40 and rotates the lock 40. The key 41 has a simple shape and is easy to operate. It doesn't break.

The lock body and the lock of the handcuff according to the present invention can be appropriately set, and the force acting on the lock body is oriented in the direction of the rotation axis depending on the positional relationship.
The engagement portion with the lock may be any as long as the line of action of the force is in the direction of the center of rotation and acts in a direction to increase the engagement with respect to an external force.

[0023]

The handcuff according to the present invention has a simple structure, increases the strength of the handcuff, and can reliably prevent malfunction. In particular, when a force to remove the rotating body is applied, the movement is surely prevented, and conversely, even when a force to reduce the diameter is applied, the swinging of the rotating body is reliably prevented. Therefore, the diameter of the handcuffs is not inadvertently reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment of a handcuff according to the present invention.

FIG. 2 is a left side view of the male member of the handcuffs according to the first embodiment of the present invention.

FIG. 3 is a sectional view taken along the line AA of the partially broken side showing the use state of the handcuffs of the first embodiment of the present invention.

FIG. 4 is a sectional view taken along the line AA of the first embodiment of the present invention, showing a use state of the locked state of the lock body of the handcuffs.

FIG. 5 is a sectional view taken along the line AA of the first embodiment of the present invention, showing a use state of the unlocked state of the lock body of the handcuffs.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Rotating body 12 Case 14 Case 16 Tooth hole 24, 25 Rotation axis 30 Gear 32 Lock body 34 Spring member 40 Lock 43 Locking part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 6-35559 (JP, U) Jiko 26-11800 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) E05B 75/00

Claims (5)

(57) [Claims] 1. An arc-shaped rotating body (10), a casing (14) rotatably holding the rotating body (10), and the rotating body (14) formed by the casing (14). An enclosure (12) having a space through which the tip of (10) can be inserted.
A plurality of tooth holes (16) provided at the tip of the rotating body (10); a gear (30) provided in the housing (12) and engaging with the tooth holes (16); This gear (30)
(32) A lock body (32) that engages with and stops rotation of the gear (30 ).
A spring member (34) for urging the lock body (32) in an engagement direction with the gear (30); and a lock member at a position where the lock body (32) is engaged with the gear (30). And a lock (40) capable of locking the body (32).
0) is engaged with the lock body (32), and
(10) acts in the direction away from the casing (12).
The lock (32) through the gear (30 )
The direction of action of the force acting on the tablet (32) is substantially directed to the rotation axis (25) of the tablet (32), and the direction in which the tablet (32) is compressed.
Handcuffs configured to act on . 2. The tablet (40) is connected to the tablet (3).
In a state where 2) is locked at a position engaged with the gear (30), the contact position (Q) between the lock (40) and the lock (32) is set to the position of the lock (32). Rotating body in position
The force in the direction of pushing (10) into the casing (12) acts.
Line connecting force acting point of <br/> acting on the lock body (32) through the gear (30) when had a (P), and a rotation center of the Joko (40) (O) The handcuff according to claim 1, wherein the lock is located on the opposite side of the rotation axis (25) of the lock body (32). 3. A line connecting the rotation axis (25) of the tablet (32) with the contact point (Q) between the tablet (40) and the tablet (32) as the center and the tablet. The handcuff according to claim 1, wherein the angle formed by the line segment connecting the rotation center (O) of (40) is 90 degrees or less. 4. The tablet (32) includes the tablet (4).
0) the notch (3) in which the locking portion (43) is positioned and engaged.
6) is formed, and the lock (40) is rotated to rotate the lock (40).
The stop (43) is in contact with one end of the notch (36).
It said lock member by said Joko (40) in contact (32) is above
The locked state at the position engaged with the gear (30)
This lock is released by the rotation of the lock (40) and the lock is released.
A locking portion (43) is located within the notch (36);
State in which the lock body (32) is engaged with the gear (30)
And the locking portion (43) by the rotation of the lock (40).
Abuts against the other end of the notch (36) and
The lock (32) is turned by the child (40) into the gear (30).
In each of the notched portions (36),
3. A lock according to claim 2, wherein the locking portion of the lock is located.
Or the handcuffs described in 3. 5. An engagement hole (42) through which a key (41) is inserted is formed in the lock (40).
The handcuff according to claim 4, wherein the key (41) abuts on (2) and the lock (40) is swung.