JP2003013649A - Ring lock for bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new stopper by improving the conventional ring lock for bicycle equipped with a stopper capable of blocking a random movement of a bolt lever at the locking position by the new stopper capable of connecting between a coupling portion protruded from a bolt lever and an operation knob for unlocking to one united body in a non-floating manner and making unnecessary the attachment of a spring exerting the operation knob. SOLUTION: Both the opened end portions 2 and 2 are faced each other and a curved bolt lever 3 is housed in a slidable manner together with a pulling spring 4 in a cylindrical lock body 1 forming a circular arc shape, the lock mechanism 5 is attached at one side of the lock main body, the bolt by the lever is pulled by the pulling spring by the operation of the lock mechanism, and a retreat from the locked position to the unlocked position is made possible by the ring lock for bicycle; a fitting groove 10 of the coupling portion 9 connecting the bolt lever to the operation knob 11 is provided at the top surface of the lock main body 1; and at the side edge of a start end portion 13 of this fitting groove, a connected stop portion 12 nearer to the inner side of the lock main body is provided, the connected lever is linked to the inside of the connected stop portion and the bolt lever 3 exerted by the pulling spring is held to the unlocking position by the stopper provided in the ring lock for the bicycle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a curved lock bar slidably accommodated together with a traction spring in an arcuate cylindrical lock body having both open ends facing each other. Regarding bicycle locks called ring locks or circle locks,
A non-return claw-shaped hooking part is provided at the start end of the fitting hole provided on the upper surface of the lock main body, so that the connecting part of the operating knob of the bar lock in the unlocked position is held by this hooking part. It is characterized by the provision of a stopper.

[0002]

2. Description of the Related Art A stopper which prevents a bar rod retracted to an unlocked position in a circle lock or a ring lock from being moved is disclosed in, for example, the prior application of the present applicant.
In addition to the publication, utility model registration No. 2506063 publication,
There is JP-A-8-303085 and the like.

[0003]

[Problems to be Solved by the Invention]
The stopper of the bar bar attached to the bicycle lock of the publication is pivotally attached to the upper end of the connecting part standing on the upper surface of the bar bar so as to be swingable in the front-back direction, and between the operating bar and the connecting part. The operating knob is biased in the forward tilting direction by the spring provided on the front side, and the front end portion of the operating knob that tilts forward is locked in the large-diameter portion provided at the starting end of the fitting groove to hold the bar bar in the unlocked position. Was doing.

Further, the stopper attached to the bicycle lock disclosed in Japanese Utility Model Laid-Open No. 12568/1993 has a fitting groove of a connecting portion provided on an outer surface of an arc-shaped lock body, and a hook-shaped side portion of the lock body. The operating knob together with the coil spring is mounted on the upper part of the connecting part protruding upwards so as to be able to move up and down, and the hooking part provided on the inner side surface of the lower end of the operating knob is provided on the outer surface of the lock body at the starting end of the fitting hole. The locking bar is held in the unlocked position by being locked by the notch, and the locking knob is pushed down to release the locking from the notch when locking.

The stopper of the bar in the bicycle lock disclosed in Japanese Patent Laid-Open No. 8-303085 is provided on the upper surface of the lock body.
A fitting groove with a large diameter portion is provided at the starting end, the operation knob is vertically movable fitted to the connecting portion projecting on the upper surface of the bar, and the coil spring is vertically provided in the fitting portion. Normally, the lower end of the operating knob is fitted into the large diameter portion of the fitting groove to hold the bar lock in the unlocked position, and when the locking operation is performed, the operating knob is pulled up against the coil spring from the large diameter portion. It was made to escape and to rotate the bar.

Each of the above-mentioned conventional stoppers has advantages and disadvantages, but in each case, it is necessary to movably connect the connecting portion projecting from the bar and the operating knob and to interpose a spring therebetween. It was Therefore, there is a drawback that extra parts are required and the assembling operation in a fine portion is complicated.

[0007]

SUMMARY OF THE INVENTION Therefore, the problem to be solved by the present invention is that the connecting portion projecting from the bar and the operating knob can be integrally connected to each other without any play. In addition, a new stopper that facilitates assembling by omitting the attachment of the spring for urging the operation knob is provided.

[0008]

According to the present invention, as means for solving the above-mentioned problems, a bar bar curved with a traction spring is provided in a cylindrical lock body having an arcuate shape with both open ends facing each other. The rod is slidably accommodated, the lock mechanism is attached to the mounting part that extends to one side of the lock body, and the bar lock is pulled by the traction spring by the operation of this lock mechanism to retreat from the locked position to the unlocked position. A ring lock for a bicycle, wherein a fitting groove of a connecting portion for connecting the bar and the operating knob is provided in an arc shape on the upper surface of the lock body, and a side of a starting end portion of the fitting groove is provided. At the edge, a locking portion is provided that is biased toward the inside of the lock body, and the connecting portion is engaged in the locking portion so that the bar rod urged by the traction spring is held at the unlocked position. The present invention provides a bicycle ring lock equipped with the stopper.

In the bicycle ring lock of the present invention constructed as described above, the bar bar returned to the unlocked position, that is, the starting end of the arc-shaped fitting groove by the urging force of the traction spring is located at the fitting position of the bar bar. The pulling force of the pulling spring, which has a fixed spring bearing on the opposite side, automatically pulls it inside the arc-shaped lock body, so the connecting part with the operation knob at the upper end automatically It displaces inwardly, engages with a hooking portion provided on the side edge of the starting end portion, and a stopper is hooked on the bar.

Further, a starting end portion of the fitting groove for guiding the connecting rod is provided to be gently offset to the outside of the lock main body, and a latching portion for engaging with the connecting portion at the starting end portion is provided for the bar bar. According to the invention of claim 2, which is provided on the curved center line in the form of a check claw, the traction spring of the traction spring is temporarily eccentric to the outside along with the bar bar along the start end portion which is offset to the outside. Since it will be pulled inward by the urging force and will engage with the non-return claw-shaped hooking part located on the center line, use a strong stopper that is more difficult to disengage from the bar rod at the final position of the unlocking stroke. You can

When locking the bar bar with a stopper at the starting end of the fitting groove, the locking knob and the connecting bar are engaged by tilting the operating knob slightly toward the outside of the lock body when locking. Since it comes off, the stopper can be released almost in the same manner as the conventional stopper. In addition, the subsequent locking operation can be done smoothly.

As described above, the ring lock of the present invention, in which the bar lock can be stoppered even when the operating knob is directly connected to the connecting portion, can be mounted on the operating knob more easily than the conventional products. The cost can be reduced because the assembly can be performed without the need for attaching a spring. The present invention has solved the above problems as described above.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway vertical front view of the embodiment. In the figure, 1 is a cylindrical lock main body which is formed into an arc shape with both open end portions 2 and 2 facing each other, 3 is curved along the lock main body 1, and is provided with a traction spring 4. Bar bars 5 slidably accommodated in the main body 1 are installed on a mounting portion 6 extending to the left side of the lock main body 1 in the drawing, and a locking portion 3 ′ on the side surface of the bar 3 is provided.
The lock mechanism 7 is provided with a lock lever 7 which is engaged with the lock mechanism 7 so as to be swingable.

Reference numeral 9 denotes a connecting portion having a rectangular cross section that protrudes to the upper surface of the middle portion of the bar 3 and 10 is a fitting groove for allowing and guiding the sliding of the connecting portion 9 during locking and unlocking. The fitting groove 10, which is represented by a solid line in the drawing, opens on the upper surface of the lock body 1 with the upper half cut off. Also,
An operation knob 11 shown by a chain line in the drawing is fitted on an upper portion of the connecting portion 9 protruding above the fitting groove 10.

Numeral 12 is provided in the form of a check claw at the starting end portion (upper end portion in the drawing) 13 of the fitting groove 10 and engages with the connecting rod 9 as shown to hold the bar 3 in the locked position. It is a hook. In this embodiment, the starting end portion 13 provided with the hooking portion 12 is provided on the left side of the drawing, that is, at a position that is gently inclined to the outside of the lock body 1 and eccentric to the axis, and the hooking portion 12 is provided. It projects in a check claw shape at the side edge of the starting end portion 13 along the inside of the.

As shown in the figure, the connecting portion 9 engaging with the hooking portion 12 at the starting end portion 13 has the fixed spring receiving portion 14 on the diametrically opposite side of the circular arc of the lock body 1 and the traction spring 4 described above. To the inner side of the lock main body 1 together with the bar 3 and thereby deepen the engagement with the locking portion 12 and make close contact. Therefore, the stopper acts strongly against the delusion of the bar 3 when the ring lock vibrates. As described above, the cross-sectional shape of the connecting portion 9 for hanging the stopper on the bar 3 is not necessarily rectangular. For example, in the case of a circular cross section, it is conceivable to use a hook portion 12 having an inner surface formed with the same semicircle.

When the bar bar 3 in the unlocked position as shown in the drawing is advanced to the locked position as shown by the imaginary line in the figure, the operation knob 11 projecting on the upper surface of the lock body 1 is provided outside the lock body 1. When it is pushed so as to be slightly inclined, the engagement between the connecting rod 9 and the hooking portion 12 is released, and thereafter the operation knob 11 is pushed down against the traction spring 4 in the same manner as in the case of a normal ring lock. You can lock it. In the locking position, the locking lever 7 biased by the spring automatically engages with the locking portion 3'on the bar 3 and the bar 3 is held in the locking position against the bias of the traction spring 4. To be done.

In implementing the present invention, the structure of the lock mechanism 5 attached to the lock body 1 is not limited to the mode of the embodiment. Further, it goes without saying that the shape of the lock body 1 can be arbitrarily changed in design in accordance with the gist of the present invention.

[0019]

The bicycle ring lock of the present invention constructed as described above and used as described above has the operation knob directly attached to the connecting portion connecting the bar and the operation knob as described above. The number of parts can be reduced because it can be fixed and there is no need to specially incorporate a spring for urging the operation knob in the hooking direction. In addition, since it is not necessary to assemble a spring in a narrow part and the part can be easily assembled, the cost of this type of ring lock can be reduced, and there is no conventional ring lock for a bicycle equipped with a bar bar stopper. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a partially cutaway vertical front view showing an embodiment of the present invention.

[Explanation of symbols]

1 lock body 2 ends 3 bar bar 4 Traction spring 5 lock mechanism 6 Attachment 7 Locking lever 8 keys 9 connection 10 Mating groove 11 Operation pick 12 Hook 13 Starting point 14 Spring receiver

Claims (2)

[Claims] 1. A curved lock bar together with a traction spring is slidably housed in a circular arc-shaped lock main body having both open ends facing each other and extended to one side of the lock main body. A bicycle ring lock in which a lock mechanism is attached to a mounting portion provided, and the bar lock is pulled by a traction spring by the operation of the lock mechanism to retreat from a locked position to an unlocked position, the lock body comprising: On the upper surface of, the fitting groove of the connecting portion that connects the bar and the operation knob is provided in an arc shape, and on the side edge of the starting end of the fitting groove
A stopper is provided which is biased inside the lock main body, and the connecting portion is engaged in the locking portion to hold the bar bar urged by the traction spring in the unlocked position. Bicycle ring lock provided. 2. The fitting groove is provided at the starting end portion so as to be gently offset to the outside of the lock body, and the hooking portion is located on the curved center line of the bar bar and has a check claw shape. The bicycle ring lock according to claim 1, which is provided.