JP4441708B2 - Piercing - Google Patents

Description

  The present invention relates to an improved pierced crotch that prevents the capture subject from moving freely even if the operator releases his / her hand without the capture pin provided at the tip thereof being detached from the capture subject.

As a conventional example in which a part of the arm forming the pierced crotch is movable, one end of a cylindrical gripping rod 1 is formed in a U shape with a fixed arm 2 and a movable arm 3, and this U-shape is formed. There is a capture crotch where the movable arm 3 is operated by bringing the movable release button 8 provided in the inner part of the inside into contact with the person to be captured. (For example, see Patent Document 1)
Utility Model Registration No. 3115969 (page 3, FIG. 1)

Since the capture stab shown in Patent Document 1 assumes that the upper body and both feet of the person to be captured are sandwiched, the U-shaped part, which is the tip of the stab, becomes larger and heavier. Handling was difficult.
In addition, since the U-shaped part is large, even if the person to be captured is pursued on the wall side, if the body does not hit the movable release button 8 that operates the movable arm or hits the side of the button, the movable arm Was not reliable because it did not work.
For this purpose, a manual stop release means 10 is also provided, but the stop release means 10 is operated with the other hand while supporting the gripping rod 1 with one hand while securing the person to be captured in the U-shape. It was very difficult.
Furthermore, it is conceivable that the large fixed arm and the movable arm may be twisted when the person to be captured is uncovered and the arm is deformed. This deformation is caused by the meshing between the ratchet gear 4 and the claw 5. In addition, it is considered that the movable stopping means 7 may be adversely affected, which has caused a decrease in reliability.
The present invention has been made to eliminate such drawbacks. In order to reduce the size of the tip portion, the present invention captures the arms and legs while sandwiching them, and has high reliability and weak arm strength. The purpose is to provide stabbed thighs that can also be used.

Means for Solving the Invention

In order to solve the above problems, the present invention has the following configuration.
The piercing crotch according to claim 1
One end of a tubular strut is provided with a scissors capture comprising a fixed arm opening and closing a movable arm, said fixed arm consists of an arm main body A and the arm body B, the arm main body A and the A over arm body from each part of the B, extending each curved arm, the other end side opposite to the these arms is provided with mounting pieces for each attachment to the strut, each between the arm main body a and the arm body B Through the spacer, the movable arm is rotatably provided on a rotation shaft provided in the arm main body A, and the movable arm is provided with a gear,
The arm body A has a biasing spring that biases one end as a rotation fulcrum and biases the other end side in a direction contacting the gear, and a third rotating body provided with a small protrusion in the middle portion of the rod body; , when the movable arm is moved to the closed Jill direction, the gear and the small protrusion and is without meshed with each other, when moving in the direction in which the movable a over arm is opened, and the gear and the small projections are mutually A locking device formed so as to be engaged is provided, a wire is provided on the third rotating body in a direction opposite to the biasing spring, and an end of the wire is protruded from a grip at the other end of the support column to provide a ring shape, It is provided as an operation part of the unlocking means for opening the movable arm in the closed state .
According to a second aspect of the present invention , the operation part of the unlocking means for opening the movable arm in the closed state causes the wire to protrude from the end part of the grip, and a ring shape is provided at the tip part of the wire. It is a thing of Claim 1 characterized by the above-mentioned.
The piercing crotch according to claim 3
Provided at one end of a tubular strut, the arranged in stacking direction, a fixed arm consisting of a fixed arm body A pair consisting of curved shape which are arranged apart from each other and the fixed arm body B, a the fixed arm pairs, always closed is urged in a direction by biasing means, and a respective curved movable arms disposed rotatable state via a spacer between the pair of fixed arms With a capture clip,
A rod-shaped first rotating body provided on the fixed arm main body A and having a rotation fulcrum at an intermediate portion thereof , and one end of the rod-shaped first rotating body is urged by a spring in one direction. And the other end of the rod-shaped first rotating body has a rotation fulcrum at the intermediate portion. The first rotating body is restricted to a predetermined position by a stopper provided on the biasing direction side . one end of the second rotating body of the rod-shaped contact, of the second rotating body of the rod-shaped ends each is biased to rotate in each opposite direction by a pair of springs, the bar-like second A movable stopping means for maintaining the movable arm in an open state in which the protrusion provided on the movable arm is in contact with the other end of the rotating body and is always biased in the closing direction ;
A cord body stretched between the first rotating body forming the movable stopping means and a hole provided in the movable arm always biased in the closing direction is brought into contact with the person to be captured. it is, an actuating means for the previous SL movable stop means is released to operate the direction in which the movable arm is closed,
Provided in the fixed arm body A of the fixed arm, one end of the rotation fulcrum and without, with attaching the urging to Rubane the other end, an intermediate portion, provided the gear meshing with the small projection provided on said movable arm a third rotating member has a locking device which the third small projections of the rotating body have a spring for biasing the gear direction and prevented from rotating in the direction of opening the movable arm,
A wire for rotating the third rotating body biased in the gear direction by the spring constituting the locking device in a direction opposite to the biasing direction is the other end of the third rotating body. attached to, the wire passes through the tubular body of the strut, protrudes from the grip provided at an end portion of the strut is intended to and a lock release means having a ring-shaped at the distal end.

The invention's effect

According to the present invention, it is possible to obtain the following effects by sandwiching a person to be captured with a capture clamp composed of a fixed arm and a movable arm.
Namely, in the invention of claim 1, 2, for returning the movable arm activated, since only pulling the strings at hand side of the struts asked to support, also cumbersome operation using a key as in the prior art There is no quick response.
In invention of Claim 3, while having the same effect as said Claims 1 and 2, in addition, the cord body which becomes the operation means of the movable arm was stretched on the back side of the catching pin, so that a wide range was obtained. Since the operating means can be brought into contact with the person to be captured in the covered state, the movable arm can be operated reliably.
By adopting a structure combining the first rotating body and the second rotating body made of a rod as the movable stopping means of the movable arm, the movable arm can be reliably stopped and actuated. It became .
Disposed fixed arm into two-ply form, by which is rotated so as to sandwich the movable arm therebetween, even capture subjects violently in scissors capture, because twist or the like does not occur in each of the arms There was no adverse effect on each means caused by the deformation of the arm, and it was possible to obtain a great effect such as highly reliable piercing.

The present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the piercing of the present invention, and FIG. 2 is an exploded perspective view showing a part of FIG.
As shown in FIG. 1, the pierced crotch 10 of the present invention is provided with a grip 16 for support at one end of a support column 12, and is provided with a capture clip 20 on the other end side of the support column 12 for catching a person to be captured. .
As shown in FIG. 2, the catching pin 20 includes a fixed arm 21 and a movable arm 41. Between the fixed arm and the movable arm, the movable arm 41 is indicated by an arrow in the figure as indicated by a dotted line in FIG. Actuating means 55 for rotating in the direction shown is provided.
Such a pierced crotch 10 supports the grip 16 and the end of the support column 12 with both hands, and the arm or leg of the person to be captured abuts against the string-like actuating means 55 provided in the capture clip 20. Then, the movable arm 41 can be operated and pinched.
Further, a ring is provided at the end of the grip 16 via a string such as a wire, and a lock release means 70 is provided to release the movable arm 41 by pulling the ring.
The unlocking means 70 has an action of maintaining the clamped movable arm 41 in a locked state unless a wire-equipped ring provided at the grip 16 portion is pulled. That is, even if a force in the opening direction is applied to the movable arm 41, the locking means prevents the movable arm from being reversed.
The strut 12 and the catching pin 20 constituting the piercing crotch 10 as well as the operating means 55 and the unlocking means 70 will be described in more detail.

FIG. 3 is an exploded perspective view showing the capture clip shown in FIG. 2, and FIG. 4 is a partially exploded perspective view showing the main part of the capture clip shown in FIG. With reference to FIG. 3, the fixed arm 21 and the movable arm 41 forming the catching pin will be described.
The fixed arm 21 includes two arms, an arm main body A22 and an arm main body B32. The arm main body A22 extends a curved arm 24 from a part of a plate provided with a rotating shaft 23 made of a cylindrical protrusion, and is attached to the above-mentioned support column 12 at the other end facing the arm 24. For this purpose, a mounting piece 25 with a hole 26 is provided.
The arm main body B32 extends a curved arm 34 from a part of the plate provided with the shaft hole 33 to be inserted into the rotation shaft 23 provided in the arm main body A22, like the arm main body A22. An attachment piece 35 with a hole 36 is provided on the other end side opposite to that for attaching to the support column 12.
Further, the arm 24 of the arm main body A is provided with a columnar protrusion 28 that serves as a stopper when the movable arm 41 rotates.

The movable arm 41 includes a gear 42 provided with a shaft hole 43 for attachment to the rotary shaft 23 provided in the arm main body A22, a curved arm 44 provided extending from one end of the gear, and a base of the arm. The arm consists of a protruding piece 46 protruding in the opposite direction.
A hole 47 is provided in the projecting piece 46 to attach a wire for constantly urging the movable arm 41 in the closing direction, which will be described in detail later.
In order to assemble these arm main body A22, movable arm 41, and arm main body B32, shaft holes 43 provided in the movable arm 41 are inserted into the rotary shaft 23 provided in the arm main body A22. Is provided with a spacer 40 for smooth rotation of the movable arm. The spacer 40 is made of a material that is less worn and slippery, and forms a gap between the movable arm 41 and the fixed arm 21.
Furthermore, the shaft hole 33 provided in the arm main body B32 is inserted from this state, and is fixed by screwing or the like to form the skeleton of the catching clip 20. The movable arm 41 combined in this way is always urged in the closing direction, but it is necessary to hold the person to be captured by the movable stop means that sets the movable arm in an open state. The urging means for closing the movable arm 41 and the movable stopping means for opening the movable arm are provided in the catching pin 20 and will be described.

The internal structure of the capture clip 20 will be described.
As shown in FIG. 4, the movable arm 41 is attached to the arm main body A <b> 22 via the spacer 40. A biasing means 50 for biasing the movable arm in a direction to always close the movable arm is attached to the projecting piece 46 of the movable arm.
The urging means 50 includes a wire 51 provided with a spring 52 at an intermediate portion thereof, and one end of the wire is fixed to a hole 47 provided in the protruding piece 46. Although not shown, the other end side of the wire is fixed in the hollow of the support column 12 with the spring 52 being pulled.
Accordingly, the movable arm 41 is always urged in the direction indicated by the arrow F in the drawing by the action of the spring 52, thereby applying a force for closing the movable arm 41 in the direction indicated by the arrow A in the drawing. .
The movable arm 41 can be used by being set in the open state, and the movable stop means 60 that maintains the open state and prevents the movement of the movable arm will be described.

The movable stopping means 60 is provided on the arm main body A22, and is brought into contact with a first rotating body 61 made of a rotating body biased in one direction and one end of a rod body forming the first rotating body. The second rotating body 66 is combined.
The second rotator 66 is also a rod, and the movable arm 41 is opened by bringing the other end, which is not in contact with the first rotator 61, into contact with the protruding piece 46 of the movable arm 41. Is set. The first rotating body 61 and the second rotating body 66 will be described in more detail.
FIG. 5 is a detailed explanatory view of the movable stop means shown in FIG. As shown in FIG. 5, the first rotating body 61 forming the movable stopping means has a substantially linear rotating body 62 provided with a rotation fulcrum 63 at an intermediate portion thereof, and the rotating body 62 is connected to one end of the rotating body. An urging spring 64 urging in the direction and a projecting stopper 65 provided in the urging direction of the urging spring and in contact with the rotating body 62.
The other end side of the rotating body 62 not provided with the urging spring 64 is in contact with the second rotating body 66. The second rotating body 66 will be described.
The second rotator 66 has a rod-like rotator 68 provided with a rotation fulcrum 67 in the middle thereof, and a pair for urging the rotator 68 in the opposite direction to both ends of the rotator 68. By arranging the spring 69 in a V shape, it is easy to return to the original state when the rotating body 68 rotates.
The rotating body 62 that forms the first rotating body 61 and the rotating body 68 that forms the second rotating body 66 are arranged in an L shape, and the rotating bodies are not in contact with each other. The other end side of the body 68 is brought into contact with a protruding piece 46 provided on the movable arm 41 to serve as a movable stopping means 60.
That is, the movement of the movable arm 41 in the rotational direction is prevented by bringing the one end of the second rotating body 66 as the movable stop means 60 into contact with the protruding piece 46 of the movable arm 41 that is always biased in the closing direction. is doing.

Drawings are provided for the actuating means 55 for rotating and moving the movable arm 41, which is kept open by the movable stop means 60, and the unlocking means 70 for returning the movable arm to the opened state if necessary. The description will be given with reference. FIG. 6 is an explanatory view showing the main parts of the movable arm actuating means and the lock releasing means.
As shown in FIG. 6, the actuating means 55 is in a straight line between the urging spring 64 side of the rotating body 62 forming the movable stop means 60 and the hole 48 provided in the movable arm 41 as shown in FIG. It consists of a wire 56 stretched on the wire. This wire is disposed on the back side of the capture pinch 20 in an open state and is covered with a tube 57.
With such a formation, when the person to be captured comes into contact with the wire 56, the wire is in a curved state, and the movable body 62 moves against the urging force of the urging spring 64, so that the movable stopping means 60 is moved. Is released and the movable arm is activated.
As shown in FIG. 6, the unlocking means 70 includes a third rotating body 71 provided with a small protrusion 72 that meshes with the gear 42 provided on the movable arm 41, and a spring 75 that biases the rotating body in one direction. , And a wire 76 for pulling in a direction opposite to the biasing direction of the spring.
One end of the third rotating body 71 is formed as a rotation fulcrum 73, a biasing spring 75 is attached to the other end side, and a small protrusion 72 is provided in the middle portion of the rod body to be fitted to the gear 42. . Note that the relationship between the gear 42 and the small protrusion 72 is such that when the movable arm 41 moves in the tightening direction, the gear 42 rotates without meshing with each other and the movable arm 41 returns to the opened state. It is formed so as to mesh with each other.
The third rotating body 71 and the urging spring 75 are arranged in a direction substantially orthogonal to each other, and the wire 76 provided in the opposite direction of the urging spring 75 passes through the cylindrical body of the column 12 and extends to the column. It protrudes from the grip 16 provided at the end of 12 and will be described with reference to FIG. FIG. 7 is an explanatory view showing an operation unit of the unlocking means.
The catching clip 20 is secured to both ends using an attachment hole 15 provided at one end of the column 12.
As shown in FIG. 7, the operation portion of the unlocking means 70 causes the wire 76 to protrude from the end portion of the grip 16, and a ring shape 78 is provided at the distal end portion of this wire.
When the movable arm 41 is operated in the tightening direction, the lock release means 70 formed in this way slides while the small protrusion 72 provided on the third rotating body 71 does not mesh with the gear 42 as described above. Move and move the movable arm. However, when the movable arm is moved in the returning direction, they both mesh with each other and act as a lock device that prevents the movable arm 41 from moving. Therefore, the trapped catcher can be kept without being released.

An example of use of the stabbing crotch 10 configured as described above and its operation will be described with reference to the drawings. FIG. 8 is a diagram for explaining the action of the catching pin, and FIG. 9 is a diagram for explaining the action of the unlocking means of FIG.
In order to use the piercing crotch 10, the movable arm 41 is set in an open state, the end portion of the support column 12 and the grip 16 are supported, and the catching person 20 mainly sandwiches the leg part of the subject.
When the leg abuts against the actuating means 55 provided in the inner part of the catching pin 20, the wire 56 as the actuating means 55 is bent into a sagging state as indicated by an arrow A in FIG. The first rotating body 61 as described above rotates and moves in the direction of arrow B in the figure, and comes off from the second rotating body 66.
As shown in FIG. 5, the second rotator 66 is arranged in a V-shape with a spring, and the rod-like rotator 68 is only kept in a horizontal state, and moves in the rotational direction with a weak force. Can be made.
One end of the rotating body 68 is in contact with the protruding piece 46 of the movable arm 41 that is always urged in the closing direction. However, the movable arm 41 cannot resist the strong force that closes the movable arm. The second rotating body 66 is also easily moved in the closing direction indicated by the arrow C in the drawing, and also in the direction indicated by the arrow D in the drawing.
The gear 42 integrated with the movable arm 41 is engaged with the small protrusion 72 provided on the third rotating body 71. However, as described above, the rotation of the movable arm in the closing direction is as follows. Since the rotation stopping function is not provided, the gear 42 is also rotated and moved together with the movable arm in the direction C indicated by the arrow in the drawing to be in the state shown in FIG.
However, since the small protrusion 72 can mesh with the opening direction of the movable arm 41, when the movable arm 41 is closed, it acts as a lock mechanism of the movable arm as shown in FIG. Therefore, it is a structure that does not cause any catcher who has pinched once to escape.

To release the trapped catcher, the lock mechanism must be released. The operation of this unlocking means 70 will be described.
To open the closed movable arm 41, when the ring 78 shown in FIG. 7 is pulled, the wire 76 shown in FIG. 9 moves in the direction indicated by the arrow E in the drawing. This movement causes the third rotating body 71 to rotate from the position indicated by the solid line to the position indicated by the dotted line in the drawing, so that the small protrusion 72 is separated from the gear and the stop mechanism is released.
While the stop mechanism is released, the ring-shaped 48 is supported by latching or the like, and the movable arm 41 can be returned to the open state by moving the movable arm 41 in the direction indicated by the arrow F in the drawing. .
Returning the movable arm 41 to the open state means that the protruding piece 46 gets over the second rotating body 66 and returns to the state in which both of them are hooked, and the wire 56 as the operating means 55 is also shown in FIG. It is stretched in a straight line. When the wire 56 becomes straight, the first rotating body 61 also returns to the original position, and the rotating body 62 and the rotating body 68 come into contact with each other as shown in FIG. Thus, the movable arm is kept open.

The pierced crotch 10 of the present invention is designed to reduce the size of the capture nip 20 by sandwiching the legs of the person to be captured, but also to make the capture nip 20 lighter. It supports weight reduction.
However, if the gear 42 part integrated with the movable arm 41 is made of an aluminum material, the gear part is made of an iron material because there is a risk of wear and reliability is lowered. Refer to the drawing for this structure. I will explain. FIG. 10 is an explanatory view showing the gear portion of the arm 41 in an exploded manner.
As shown in FIG. 10, a gear made of iron is press-fitted into a movable arm 41 made of aluminum. The iron gear is composed of a curved band provided with protrusions at both ends thereof, and a fitting gear 49 having a gear formed on the outside thereof.
On the movable arm 41 side, a notch 48 of the same shape for press-fitting the fitting gear 49 is provided, and both are integrated by fitting. Such a gear portion is made of an iron material, and the third rotating body 71 shown in FIG. 9 is also made of an iron material, so that a reliable piercing with little wear is obtained.

The piercing crotch 10 can be used immediately at any time by setting the catching pin 20 to be always open. The movable arm 41 can be operated simply by pressing the capture clip 20 against the arm or leg of the person to be captured, so that it can be easily captured, and it can be used by anyone because it is a lighter thigh. .
As shown in FIG. 3, the pierced crotch 10 is provided with a columnar protrusion 28 on the arm 24. The columnar protrusion 28 stops the rotation of the movable arm and allows a slight interval even when it is sandwiched. Is set.
In addition, by moving the support column 12 with the legs sandwiched, pain can be given to the leg of the person to be captured, so that it can be prevented from being counterattacked. The reason why the capture target person can be painful by moving the struts with the legs sandwiched between the left and right directions and the rotation direction is because of the sandwiching between the arc-shaped arms.
Even if the operator removes his / her hand from the pierced crotch in a sandwiched state, it is difficult not only to escape when the elongated pierced crotch is attached, but also to understand the handling of the pierced crotch, the unlocking means at the tip of the grip 16 Since 70 cannot be reached, it is impossible to release the movable arm and escape.

    It is a perspective view which shows the crotch of this invention.     It is a disassembled perspective view which fractures | ruptures and shows a part of FIG.     It is a perspective view which decomposes | disassembles and shows the capture clip shown in FIG.     It is a partially exploded perspective view which shows the principal part of the capture clip shown in FIG.     It is a detailed explanatory view of the movable stop means shown in FIG.     It is explanatory drawing which shows the principal part of the operation means of a movable arm, and a lock release means.     It is explanatory drawing which shows the operation part of a lock release means.     It is action | operation explanatory drawing of the capture clip shown in FIG.     It is action | operation explanatory drawing of the lock release means shown in FIG.     It is explanatory drawing which decomposes | disassembles and shows the gear part of a movable arm.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Stitch 12 Post 16 Grasping 20 Grasping clamp 21 Fixed arm 41 Movable arm 42 Gear 50 Energizing means 55 Actuating means 60 Movable stop means 61 First rotating body 66 Second rotating body 70 Unlocking means 71 Third rotating body

Claims (3)

One end of a tubular strut is provided with a scissors capture comprising a fixed arm opening and closing a movable arm, said fixed arm consists of an arm main body A and the arm body B, the arm main body A and the A over arm body from each part of the B, extending each curved arm, the other end side opposite to the these arms is provided with mounting pieces for each attachment to the strut, each between the arm main body a and the arm body B Through the spacer, the movable arm is rotatably provided on a rotation shaft provided in the arm main body A, and the movable arm is provided with a gear,
The arm body A has a biasing spring that biases one end as a rotation fulcrum and biases the other end side in a direction contacting the gear, and a third rotating body provided with a small protrusion in the middle portion of the rod body; , when the movable arm is moved to the closed Jill direction, the gear and the small protrusion and is without meshed with each other, when moving in the direction in which the movable a over arm is opened, and the gear and the small projections are mutually A locking device formed so as to be engaged is provided, a wire is provided on the third rotating body in a direction opposite to the biasing spring, and an end of the wire is protruded from a grip at the other end of the support column to provide a ring shape, A piercing crotch provided as an operation portion of an unlocking means for opening the movable arm in a closed state . The operation part of the unlocking means for opening the movable arm in the closed state is the end of the grip. The wire is projected and a ring shape is provided at the tip of this wire. The piercing crotch according to claim 1. One end of a tubular strut is provided with a scissors capture comprising a fixed arm opening and closing a movable arm, said fixed arm consists of an arm main body A and the arm body B, the arm main body A and the A over arm body from each part of the B, extending each curved arm, the other end side opposite to the these arms is provided with mounting pieces for each attachment to the strut, each between the arm main body a and the arm body B The movable arm is rotatably provided on a rotation shaft provided on the arm body A via a spacer ,
Said movable arm is a gear having a shaft hole for mounting the rotating shaft provided on the arm body A, extends from one end of the gear, the arm were each bent of said arm body A and the arm body B And a curved arm for forming the trapping pin, and a protruding piece protruding from the base of the arm in the opposite direction to the arm,
One end of a wire provided with a spring in the middle is fixed to the hole provided in the projecting piece of the movable arm, and the other end of the wire is fixed in the hollow of the column with the spring pulled. comprising, a biasing means for biasing the movable arm always closing direction,
A rod-shaped rotating body provided on the arm main body A and provided with a rotation fulcrum at an intermediate portion , an urging spring for urging the rotating body in one direction at one end of the rotating body, and an urging force of the urging spring The rotating body is opposed to each of both ends of the first rotating body which is provided in a biasing direction and includes a protrusion-like stopper that comes into contact with the rotating body, and a rotating body of a rod body provided with a rotation fulcrum at an intermediate portion. And a second rotating body formed by arranging a pair of springs biased in the direction of rotation in a V shape, and the other end side of the first rotating body not provided with the biasing spring Is brought into contact with one end of the second rotating body, and a projecting piece provided on the movable arm is brought into contact with the other end of the second rotating body , and is always urged in the closing direction. Movable stop means for preventing rotation of the movable arm and maintaining the movable arm in an open state ;
A wire stretched in a straight line between the biasing spring provided at one end of the first rotating body and a hole provided in the movable arm on the back side of the catching pin in an open state more becomes, and actuating means for rotating to close the movable arm of the catch pinching state was opened,
Provided on the arm main body A of the fixed arm, one end is a rotation fulcrum, a biasing spring is attached to the other end , and a small protrusion is provided in the middle part of the rod body to be provided on the movable arm. A third rotating body that is biased so as to be fitted to the gear, and when the movable arm moves in a closing direction, the small protrusion provided on the third rotating body is without intends gear engaged, it rotates moving the movable arm while sliding, I move Then the small projection and the gears mesh with each other in the direction in which the movable arm is opened, and the rotation child in the direction of opening the movable arm A locking device to prevent
A wire for rotating the third rotating body urged in the gear direction by the spring constituting the locking device in a direction opposite to the urging direction is the other end of the third rotating body. give taken to the side, the wire passes through the tubular body of the strut, so out collision from grip provided at an end portion of the strut comprises a lock release means having an operating portion provided with a ring-shaped at the distal end Stitching.

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