JPH10205192A - Mechanism for fixing proximal end of wire in lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanism for fixing the proximal end of a wire in a lock which enable the lock body to be small-sized, and which can be simply assembled, with which the lock cannot be illegally disassembled after being assembled. SOLUTION: In a mechanism for fixing a proximal end part of a wire in a lock composed of a lock body A and a wire body B, a key rod insertion hole 13 for receiving a key rod 23 formed in the proximal end side of the wire body B, and a stopper ring insertion hole 14 opened in a direction orthogonal to the key rod insertion hole 13 are formed in the lock body A. Further, a head piece of the key rod 23 integrally fixed to the proximal end of the wire body B is locked by a stopper ring 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock for locking a bicycle or motorcycle wheel through a cable such as a wire or a chain. The present invention relates to a mechanism for fixing a base end of a cord in a lock that can be fixed.

[0002]

2. Description of the Related Art Conventionally, there is a lock disclosed in Japanese Utility Model Publication No. 5-41171 as a lock that locks a wheel of a bicycle or a motorcycle through a cable. This lock is composed of a lock main body and a cord provided with a lock rod at both ends, and a lock rod formed on the proximal end side of the rope is inserted into the lock main body in a locked state so as to be assembled. . By the way, in this lock, a leaf spring formed in a tapered tubular shape is inserted and supported at a predetermined position in the lock main body, and a locking rod formed on the base end side of the cord is inserted into the lock to thereby form the leaf spring. After the leaf spring is temporarily expanded by using elasticity and the locking rod is inserted, the neck portion of the locking rod is locked to the leading edge of the leaf spring to prevent it from falling off.

[0003]

The above-mentioned conventional mechanism for fixing the base end portion of the cord in the lock uses a plate spring formed in a tapered cylindrical shape, so that the plate formed in the lock body has a tapered cylindrical shape. It is necessary to form a large recess for inserting the locking rod formed on the base end side of the spring and the rope locked by the leaf spring, and there is a problem that the lock body becomes large. Further, since it is necessary to form the leaf spring into a complicated shape such as a tapered cylindrical shape, the cost of members is increased,
The assembling also requires time and effort, and furthermore, when a pin or the like is inserted from the direction in which the lock rod is inserted, the leaf spring easily expands and the lock rod comes off.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the conventional locking mechanism of the end portion of the lock in the lock, and can reduce the size of the lock main body, assemble the lock easily, and improperly assemble the lock. It is an object of the present invention to provide a mechanism for fixing a base end portion of a cord in a lock which cannot be disassembled.

[0005]

In order to achieve the above object, the present invention provides a mechanism for fixing a basal end portion of a cord in a lock, the method comprising: fixing a basal end portion of a cord in a lock comprising a lock body and a cord body. In the mechanism, a lock rod insertion hole for inserting a lock rod formed on the base end side of the cord main body and a stopper ring insertion hole opened to the outside in a direction orthogonal to the lock rod insertion hole are formed in the lock body. The head piece of the lock rod integrally fixed to the base end side of the cord body inserted into the lock rod insertion hole is locked by a stopper ring.

In this case, a stopper mechanism for stopping the stopper ring can be provided.

The fixing mechanism for the base end of the cord is inserted into the lock rod insertion hole by means of a stopper ring inserted into a stopper ring insertion hole opened to the outside in a direction orthogonal to the lock rod insertion hole formed in the lock body. The head piece of the locking rod integrally fixed to the base end side of the cord main body is locked.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a lock mechanism of a lock according to the present invention.

The lock according to the present invention comprises a lock body A and a cord body B.

As shown in FIG. 1, a lock body A is provided with a plug 2 such as a cylinder lock or a magnet lock in a cavity 11 of a lock outer cylinder 1 so as to be rotatable by rotation of a key K and a knock pin 7. The fitting is made in the state where it is prevented from coming off. At the inner end of the plug 2, a short core rod 3 and a plurality of annular inclined cams 4 surrounding the same are formed, and a predetermined key K is inserted into a key hole (not shown) of the plug 2.
And turning the key K causes the plug 2 to rotate with the core rod 3 and the inclined cam 4.

Further, at the back of the cavity 11 of the lock outer cylinder 1,
The locking cylinder 5 is inserted into the lock outer cylinder 1 in a non-rotating state, and a spring 6 is disposed between the rear surface of the locking cylinder 5 and the inner rear end face of the cavity 11, so that the locking cylinder 5 is always inserted. To the plug 2 side.

As shown in FIG. 3, the locking cylinder 5 receives the narrow portion 24b of the lock rod 24 inserted into the lock hole 12 from the outside of the lock outer cylinder 1 and the mushroom-shaped head piece 24a. A hole 50 is formed, and the rear edge 24 of the head piece 24a is
c to prevent the lock rod 24 from coming out. Further, a hole is formed in the locking cylinder 5 on the plug 2 side, the core rod 3 of the plug 2 is inserted into this hole, and a plurality of inclined cams 52 are formed in an annular shape on the peripheral edge of the plug. Of the inclined cam 4 is fitted. Further, the locking cylinder 5 is always pushed by the return spring 6 and the inclined cam 52 is moved to the inclined cam 4 of the plug 2.
When the plug 2 is turned, the inclined cam 4 pushes the locking cylinder 5 so that the locking hole 5 formed in the locking cylinder 5 faces the locking hole 12 of the lock outer cylinder 1. The corners 51 of the lock 50 are set so as to be separated from the head piece 24 a of the lock rod 24. The locking hole 50 is formed as a long hole in the front-rear direction in consideration of the retreat of the locking cylinder 5.

At the other end of the lock outer cylinder 1, a lock rod 23 at the base end of the other end of the cord body B having a required length is inserted.
A lock rod insertion hole 13 to be fixed is formed, and a stopper ring insertion hole 14 opened to the outside in a direction orthogonal to the lock rod insertion hole 13 is formed.

The position of the stopper ring insertion hole 14 formed on the outer surface of the lock outer cylinder 1 so as to open to the outside is as follows.
When the lock rod 23 on the proximal end of the cord body B is inserted into the stopper ring insertion hole 14 to a fixed position, the lock rod 23 on the proximal end is
Of the narrow portion 23b, that is, the back surface 2 of the head piece 23a
3c so that the lock ring 23 and the lock outer cylinder 1 are moved by the stopper ring 8 as shown in FIG.
Are determined so as to be integrated.

The cable body B covers a cable 21 made of a wire or a chain having a strength and a diameter that is not easily cut by pliers or the like, and an outer peripheral surface of the cable 21 to prevent theft. A tube 22 made of synthetic resin and a cord 2
1 and a locking rod 23 fixed to the lock outer cylinder 1 integrally formed on the base end side, and a locking rod detachable from the lock outer cylinder 1 integrally formed on the distal end side of the cord 21. It is composed of a lock rod 24.

As shown in FIG. 4, the stopper ring 8 is made of a resilient wire having a required diameter, for example, spring steel, and has an inner diameter smaller than the outer diameter of the head piece 23a of the lock rod 23. Then, it is formed in a ring shape having a cut portion so that the diameter is larger than the narrow portion 23b and the outer diameter is larger than the outer diameter of the head piece 23a of the lock rod 23.

As the stopper ring, as shown in FIGS. 5 to 6, an elastic wire having a required diameter, for example, a U-shaped snap ring deformed by using a spring steel is used. As shown in FIGS. 7 and 8, a stopper ring 81 formed as shown in FIGS. 7 and 8 and having a required thickness and elasticity, for example, a stopper ring 82 formed in a snap ring shape by pressing using spring steel is used. it can.

In this case, the stopper ring 81 inserted into the stopper ring insertion hole 14 is formed in the stopper ring insertion hole 14 by forming a recess 14a into which the protrusions 81a, 82a formed on the stopper rings 81, 82 are fitted. , 82. Thus, when the stopper rings 81 and 82 having the openings are used, by inserting a pin or the like from the stopper ring insertion hole 14, it is possible to prevent the assembled lock from being illegally disassembled.

The above-described fixing mechanism for the base end portion of the cord includes a stopper ring inserted into a stopper ring insertion hole 14 opened to the outside in a direction orthogonal to a lock rod insertion hole 13 formed in the lock outer cylinder 1 of the lock body A. The head piece 23a of the lock rod 23 integrally fixed to the base end side of the cord main body B inserted into the lock rod insertion hole 13 is locked by 8, 81, 82. In this case, the stopper rings 8, 81 and 82 can be directly inserted into the stopper ring insertion holes 14 from the outside, and in this state, the head of the lock rod 23 integrally fixed to the base end side of the cable body B. While the stopper ring 8, 81, 82 is expanded by the head piece 23a, the locking rod insertion hole 13 is
And the stopper rings 8, 81, 82 are
Of the lock rod insertion hole 13 by fitting into the narrow portion 23b of
The head piece 23a of the straight lock rod 23 is locked therein. When the stopper ring 81 is used, the lock rod 23
After inserting the head piece 23a into the lock rod insertion hole 13, the stopper ring 81 is directly inserted from outside into the stopper ring insertion hole 1.
4, the lock rod 2 is inserted into the lock rod insertion hole 13.
The third head piece 23a can be locked.

[0020]

According to the mechanism for fixing the basal end portion of a cord in a lock according to the present invention, a stopper ring inserted into a stopper ring insertion hole opened to the outside in a direction orthogonal to a lock rod insertion hole formed in the lock body. The head piece of the lock rod integrally fixed to the base end side of the cord body inserted into the lock rod insertion hole can be locked, the lock body can be downsized, and the stopper ring can be externally connected. Since the lock can be directly inserted into the stopper ring insertion hole, the assembling is simplified and the assembled lock can be prevented from being illegally disassembled.

Further, by providing a stopper ring rotation preventing mechanism, when the stopper ring having the opening is used, it is possible to prevent the assembled lock from being illegally disassembled.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one embodiment of a fixing mechanism of a base end portion of a cord in a lock according to the present invention.

FIG. 2 is an explanatory diagram of an operation of inserting and locking a lock rod at a basal end portion of a cable into a lock body.

FIG. 3 is an explanatory view of a locking cylinder.

4A and 4B are explanatory views of a stopper ring, wherein FIG. 4A is a front view and FIG. 4B is a side view.

FIG. 5 is an explanatory view of a different example of a stopper ring;
(A) is a front view, (B) is a side view.

FIG. 6 is a sectional view of a lock body using the stopper ring of FIG. 5;

FIG. 7 is an explanatory view of a different example of a stopper ring,
(A) is a front view, (B) is a side view.

FIG. 8 is a sectional view of a lock body using the stopper ring of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS A Lock main body B Cable main body 1 Lock outer cylinder 12 Lock hole 13 Lock rod insertion hole 14 Stopper ring insertion hole 21 Cable 22 Tube 23 Lock rod 23a Lock rod head 23b Narrow part 23c Back surface 24 Lock rod 8 Stopper ring 81 Stopper ring 82 Stopper ring

Claims (2)

[Claims] 1. A lock rod insertion hole for inserting a lock rod formed on a proximal end side of a rope main body into a lock main body in a lock mechanism for a proximal end of a rope in a lock composed of a lock main body and a rope main body. And a stopper ring insertion hole which is formed at the base end side of the cord body inserted into the lock rod insertion hole, forming a stopper ring insertion hole opened to the outside in a direction orthogonal to the lock rod insertion hole. A lock mechanism for fixing a basal end portion of a rope in a lock, wherein the lock member is locked by a stopper ring. 2. The locking mechanism according to claim 1, further comprising a stopper mechanism for stopping the stopper ring.