JPH0533644Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an improvement of a bicycle lock having a double locking mechanism.

<Conventional technology> Conventional bicycle locks generally have a simple structure, so it is possible to unlock the bicycle by inserting a steel wire, etc. Something happened.

Therefore, in order to solve this problem, the applicant
Jitsukaiaki developed a bicycle lock with a double lock mechanism.
It was proposed in Publication No. 54-46694.

As shown in Figs. 5 and 6, this lock has a barb a that slides the casing in the front and back direction, and a locking pin a1 provided on this barb a that is freely rotatable to engage the locked state. A locking piece b, and a locking piece c (indicated by a dashed line in the figure) for locking the locking piece b,
Further, this engaging piece c has an L-shaped hole c1 formed therein, and is arranged so as to be slidable in the front and rear directions within the casing. And when it's locked,
The locking piece c is positioned on the rear side using a coil spring (not shown), and the locking piece b in the locked state is disposed with the tip locking part b1 in the gap c3 of the L-shaped hole c1. b cannot be rotated. By doing this, even if a steel wire or the like is inserted through the keyhole and the locking piece b is pressed, the locking between the locking piece b and the locking piece a cannot be released. On the other hand, to unlock the lock, insert the key body e from the keyhole between the locking piece b and the locking piece c in the casing as shown in FIG. Key body contact piece c4 provided on piece c
Push forward and lock the end locking part b1 of locking piece b to L.
The locking piece b is arranged in the wide part c2 of the shaped hole c1 so that the locking piece b can be rotated, and the locking piece b is rotated.
The latching between the bar and the bar plate a is released.

However, as shown in FIG. 5, the key body e inserted into the casing is in the unlocked state between the pivot pin f that pivotally supports the locking piece b and the locking pin a of the locking piece a. By being sandwiched between them, it is prevented from coming out from inside the casing. However, as the barb piece a slides forward, the pivot pin f and the locking pin a1 of the barb piece a become disconnected. The key body e may fall out from between the keys. In this unlocked state, the key body e
If it comes off, the locking pin a1 becomes a hindrance as shown in FIG. 6, making it impossible to insert the key body e into the casing. Moreover, even if an attempt is made to press the barlet piece a forward, the tip end locking part b1 of the locking piece b gets into the gap c3 of the L-shaped hole c1 and cannot be rotated, so the locking piece b gets in the way. As a result, sliding of the barb piece a toward the front side is prevented.

Therefore, in such a case, there is a problem that the lock can no longer be used as a lock, and as a result, the entire lock must be replaced.

<Problems to be solved by the invention> This invention was proposed in view of the above-mentioned circumstances.
The purpose of this is to have a double lock mechanism, and even if the key falls out of the casing in the unlocked state, it will still be able to slide toward the front of the bar, and it will remain in the normal locked state. Our goal is to provide a bicycle lock that can be used.

<Means for solving the problem> A bar 2 that slides the casing 1 in the front and back direction,
It is equipped with a locking piece 4 that locks the locking pin 21 provided on this barb piece 2 to make it into a locked state, and by pressing the key body 6, the locking piece 4 is pressed and moved. The present invention solves the above problems by providing a bicycle lock that unlocks and unlocks the bicycle, having the following features.

The bicycle lock of the present invention is provided with a locking piece 5 that further locks the locking piece 4.

The locking piece 5 includes a locking means for locking the locking piece 4, a key body abutting piece 53 that is pressed against the key body 6, and a locking piece presser that is pressed against the locking pin 21 of the lock piece 2. 55. It is disposed within the casing 1 so as to be able to slide in the front-rear direction.

The locking means locks the locked locking piece 4 that locks the barb piece 2 as the locking piece 5 slides to the rear side,
As the locking piece 5 slides forward, the locking of the locking piece 4 is released.

When the key body abutting piece 53 is pressed by the key body 6, the locking piece 5 is slid forward.

The barb pressing portion 55 is arranged so as to be pressed against the locking pin 21 as the barb 2 slides forward.

When the bar pressing portion 55 is pressed by the locking pin 21, the bar 5 can be slid forward.

<Function> In the present invention, since the locking piece 5 is provided with the locking piece pressing part 55 arranged so as to be pressed against the locking pin 21 as the locking piece 2 slides forward, it is difficult to open the lock. Even if the key body 6 comes out of the casing in this state, as shown in FIG. 5 and presses the barb piece pressing part 55 forward. As the barb piece pressing part 55 is pressed forward, the loose fitting piece 43 provided at the tip of the locking piece 4 moves into the wide part of the L-shaped hole 51 as a locking means provided in the locking piece 5. will be placed,
The locking piece 4 becomes rotatable in the X direction in FIG. 3. Therefore, the locking pin 21 pushes away the locking piece 4 in the X direction, so that the barb piece 2 further slides forward. As shown in FIG. 4, when the locking pin 21 moves forward from the pin locking recess 42 of the locking piece 4, it fits into the pin locking recess 42 and is locked by the locking piece 4. It can be placed in the normal locked state.

Therefore, it is possible to prevent the lock from being unable to be used as a lock due to the inability to insert the key and the forward sliding of the barb as in the conventional case.

<Example> Hereinafter, the present invention will be specifically explained based on the drawings.

1 to 4 show an embodiment of the present invention, and FIG. 1 is an exploded perspective view of the lock. 2 to 4 are relationship diagrams showing the mutual positional relationship of the lock body and the key body, and FIG. 2 shows the unlocked state,
Figure 3 shows the unlocked state without the key body;
The figure shows the locked state.

Hereinafter, preferred embodiments of the invention will be described in detail by way of example with reference to these drawings. However, the dimensions, shapes, materials, relative positions, etc. of the components described in this example are not intended to limit the scope of this invention, unless specifically stated. , is merely an illustrative example.

In addition, front and back, top, bottom, left and right in the following explanatory text refer to front and back, top, bottom, left and right in the corresponding drawings.

As shown in FIG. 1, the bicycle lock of this embodiment includes a box 1 as a casing, a bar 2, a main body plate 3, a locking piece 4, a locking piece 5, and a key body 6. and,
It consists of other small parts.

The configuration of each component will be explained below.

A Box 1 The box 1 is a rectangular cylinder with a bottom by pressing a thin plate, and the front side has a barb insertion hole 11, a main body plate locking hole 12, and keyhole 13
A hole 17 is further drilled above the keyhole 13 for fixing a bracket for attaching the lock to the bicycle body.

Then, a barlet insertion hole 11' and a screw insertion hole 14 for fixing the main body plate are bored from below on the left side surface in the figure, and on the left and right of the screw insertion hole 14 for fixing the main body plate are the main body plate 3, which will be described later. Protrusions 15, 15' are provided into which the fitting holes 31, 31' fit.

(b) Bar piece 2 The bar piece 2 is made of a steel bar, and has a pin 21 approximately in the center.
has been planted.

Then, the barb piece 2 is inserted into the barb piece insertion hole 11,1 of the box body 1.
1', and moves the box body 1 in the front-rear direction (Z-
P direction). Also, the coil spring 22 causes the rear side (direction P in the figure)
is energized by

C. Main body plate 3 The main body plate 3 is made of a steel plate, and a locking piece rotating shaft 32 for pivoting the locking piece 4 is provided at the rear right side in the drawing, and a locking piece rotating shaft 32 for pivoting the locking piece 4 at the left end in the figure rotates the locking piece 4 in the left rotation direction. (Second
A spring 33 is fixed that biases in the Y direction in the figure.

A rectangular pin loose fitting hole 34 is bored diagonally from the left rear part to the right front part.

(The pin 21 of the bar 2 is inserted into the pin loose fitting hole 34, and as the bar 2 moves, the pin 21 of the bar 2 is inserted into the pin loose fitting hole 34.
A folded piece 35 bent upward is provided at the left end, and a screw hole 36 for screwing with the main body plate fixing screw 16 is provided in the center.

This screw hole 36 also serves as a projection for fixing a coil spring 37 that urges the engagement piece 5 forward.

Fitting holes 31 and 31' that fit into the projections 15 and 15' of the main body plate 3 are provided on the left and right sides of the screw hole 36.

D. Locking piece 4 The locking piece 4 has a pivot hole 41 bored in the rear center thereof to be pivoted to the main body plate 3.

A pin locking recess 42 for locking the pin 21 at the time of locking is provided at the left front end, and a pin locking recess 42 is provided at the left front end for locking the tip of the spring 33 and loosely fitting into the L-shaped hole 51 of the locking piece 5, which will be described later. A loose fit hole 43 is provided.

E. Biting piece 5 The biting piece 5 is made by bending a steel plate into a U-shape turned upside down, and has four claws 52, 52 on the front, back, left and right sides. serves as a guide that slidably holds the main body plate 3.

A key body abutting piece 53 is provided on the right rear portion facing downward, and an L-shaped hole 51 is provided on the left side thereof.

This L-shaped hole 51 has a wide part 51a on the right side and a narrow part 51b on the left side, into which the loose fitting piece 43 of the locking piece 4 is inserted. Therefore, in this engagement piece 5, the loose fitting piece 43 moves from the wide part 51a to the narrow part 51.
It slides in the front and back direction by the distance that it moves relatively to b. Further, when the loose fitting piece 43 comes to the wide part 51a, the locking piece 4 becomes rotatable, and when it comes to the narrow part 51b, it becomes unrotatable.

Approximately in the center, when the engaging piece 5 is combined with the main body piece 3 and pressed to the left in the figure, a pin loose fitting hole 3 is formed.
A rectangular recess 54 having the same shape as 4 is provided so that the tip of the pin 21 of the barb piece 2 inserted into the pin loose fitting hole 34 does not come into contact with it.
Further, a key body guide 55 is provided on the front right side portion. This key body 55 serves as a barb pressing part, and is formed so that the end of the locking piece 5 is bent and protrudes downward. After assembly, when the locking piece 5 is disposed on the front side, the front part of the key body guide 55 is located on the side of the pin loose fitting hole 34 as shown in FIG. On the other hand, when it is disposed on the rear side, its front part appears above the rear side of the pin loose fit hole 34 of the main body plate 3, as shown in FIG. The tip of the bar 2 protruding from the pin 21 comes into contact with the pin 21 and is pressed forward when moving forward through the pin loose fitting hole 34. The key body guide 55 also serves as a guide when the key body 6 is inserted into the box body 1 from the key body 13.

The recessed portion at the left end serves as a fitting hole 56 into which the coil spring 37 is fitted.

F. Key body 6 The key body 6 is a key whose right part (as shown in the figure) is folded back upwards to form a key body pressing part 61, and whose left part is bifurcated, with the rear branch 62 contacting the key body. The front branch 63 presses the loosely fitting piece 43 of the locking piece 4.

The configuration of each component is as described above.

Next, the positional relationship of each part will be explained with reference to FIGS. 2 to 4, and the function as a lock will be explained.

It should be noted that these figures are all viewed from the upper side of FIG. 1, and only the minimum necessary parts are shown to simplify the explanation.

FIG. 2 shows the unlocked state, and in this unlocked state, the locking piece rotating shaft 32 of the key body 6 is inserted into the fork part in the same way as shown in FIG. The branch 62 of the body 6 is held between the pin 21 of the locking piece 2 and the locking piece rotating shaft 32 while pressing the key body abutting piece 53 of the locking piece 5. Therefore, in this unlocked state, the locking piece 5 is located on the front side against the bias of the coil spring 37, and the loosely fitting piece 43 of the locking piece 4 is placed in the wide part 51a of the L-shaped hole 51. Accepting it.
As a result, as shown in FIG. 2, the locking piece 4 is in a state where it can rotate in the right direction (X direction in the figure).

To lock the door from this state, push the barb 2 forward. As a result, pin 2 of bar 2
1 slides to the front end of the pin loose fitting hole 34 while pushing away the locking piece 4 in the illustrated X direction. And pin 2
1 slides to the front end of the pin loose fitting hole 34, the locking piece 4 returns in the Y direction due to the bias of the spring 33, and the pin 21 enters the pin locking recess 42 of the locking piece 4 and engages the bar piece 2. The locking piece 4 is in the locked state, resulting in the locked state shown in FIG. In the locked state shown in FIG. 4, the pin 21 and the locking piece rotating shaft 3
The key body 6, which had been sandwiched between the locking pieces 2 and 2, is released and no longer presses the key body abutting piece 53 of the locking piece 5. As a result, the locking piece 5 comes to be located on the rear side due to the bias of the coil spring 37, receives the loose fitting piece 43 of the locking piece 4 in the narrow part 51b of the L-shaped hole 51, and at the same time The front portion of the guide 55 is disposed above the pin loose fitting hole 34. Therefore, in this state, the locking piece 4 cannot be rotated, and even if a steel wire or the like is inserted through the keyhole 13 and the locking piece 4 is pressed, the locking piece 4 and the locking piece 2 cannot be locked. It shall not be possible to cancel.

On the other hand, if the key body 6 falls out when pushing the barb 2 forward to make it into the locked state, and there is no key body 6 in the unlocked state, the box of the key body 6 can be removed as shown in Fig. 3. Insertion into the bar 1 is prevented by the pin 21, and sliding of the bar 2 toward the front side is also prevented by the locking piece 4. However, in the present invention, the function of the key guide 55 of the locking piece 5 allows the barb piece 2 to slide forward.

Specifically, when the bar 2 is pressed forward from the unlocked state shown in FIG. Touch it and press it forward. By pressing this key body guide 55, the locking piece 5
slides forward. As a result, the loose fitting piece 43 of the locking piece 4, which was located in the gap 51b in the L-shaped hole 51, is now located in the wide part 51a of the L-shaped hole 51, and the locking piece 4 is in a rotatable state. becomes. Then, as you press the bar 2 further forward, the pin 2
1 contacts the key body guide 55 and also contacts the locking piece 4, pushes the locking piece 4 away in the X direction against the bias of the spring 33, and slides forward. After that, as in the case of normal locking, when the pin 21 slides to the rear end of the pin loose fitting hole 34, the locking piece 4
is returned by the bias of the spring 33, the pin 21 enters the pin locking recess 42 of the locking piece 4, and the locking piece 2
and the locking piece 4 are locked, resulting in a normal locked condition as shown in FIG. Thereby, the key body 6 can be inserted into the box body 1 through the keyhole 13 as usual. Therefore, it is possible to prevent the lock from being unable to be used as a lock due to the inability to insert the key as in the conventional case, and the bar being prevented from sliding forward. .

<Effects of the invention> As described above in the examples, the present invention uses the key body guide of the locking piece to guide the lock piece to the front side even if the key falls out of the casing in the unlocked state. The normal locked state can be achieved by pressing the button.

Therefore, it is possible to prevent the lock from being unable to be used as a lock due to the inability to insert the key body into the casing as in the conventional case, and the forward sliding of the barb piece. .

As described above, the present invention has a double lock mechanism, and even if the key body comes out of the casing in the unlocked state, the bar can be slid forward, and the lock can be used normally when the lock is in the locked state. It was possible to provide a bicycle lock that could be used for bicycles.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of the lock of the present invention, Fig. 2 is an explanatory view showing the unlocked state, and Fig. 3 is the state in the unlocked state without a key body. FIG. 4 is an explanatory diagram showing the locked state, FIG. 5 is an explanatory diagram showing the unlocked state of the conventional example,
FIG. 6 is an explanatory diagram showing a state in which the lock is unlocked without a key body in a conventional example. 2... Bar piece, 4... Locking piece, 5... Engagement piece, 6
...Key body.

Claims (1)

[Claims for Utility Model Registration] A key comprising a bar 2 that slides the casing 1 in the front-rear direction, and a locking piece 4 that locks a locking pin 21 provided on the barb 2 to lock the lock. In a bicycle lock in which the locking piece 4 is pressed and moved by pressing the body 6 to release the lock between the locking piece 4 and the barb piece 2, and the lock is opened, the locking piece 4 is further attached to the lock. Biting piece 5
The locking piece 5 is provided with a locking means for locking the locking piece 4, a key body abutting piece 53 that is pressed against the key body 6, and a locking pin 21 of the locking piece 2 that is pressed against the locking piece 2. The locking means has a bar pressing part 55 which is disposed so as to be able to slide in the front and back direction within the casing 1, and this locking means presses the barb 2 as the locking piece 5 slides rearward. The locking piece 4 in the locked state is held, and the locking piece 4 is released as the holding piece 5 slides forward, and the key body abutting piece 53 The locking piece 5 is slid forward by being pressed by the key body 6, and the locking piece pressing portion 55 is pressed by the locking pin 21 as the locking piece 2 is slid forward. The bicycle is arranged such that the locking piece 5 is slid forward when the locking pin 21 is pressed by the locking pin 21. lock.