JPH0535039Y2 - - Google Patents

Description

[Detailed explanation of the idea]

【0001】

[Field of Industrial Application] The present invention relates to a center-pull type caliper brake mainly used for bicycles.

[0002]

[Prior Art] Generally, this type of center-pull type caliper brake has a brake shoe and a pair of first and second brakes that are pivotally supported on a fixed member, as shown in Japanese Utility Model Publication No. 57-53749. 2 brake arms, a connecting wire that connects via a carrier to the tip of an operating wire whose one end is attached to the brake lever, and a return that biases the brake arm in a direction that increases the distance between the brake shoes. A spring is provided at both end portions of the connecting wire, and hooking portions are provided at both ends of the connecting wire to releasably lock onto wire hooking portions provided on the brake arm, and each brake arm is moved to the return position by pulling the operation wire. Braking is performed by swinging against a spring.

【0003】

[Problems to be Solved by the Invention] When the connecting wire hook in the caliper brake configured as described above is detachably locked to the wire hooking part of the brake arm, it is necessary to remove the connecting wire. Then, the hooking body is engaged with and detached from the wire hooking part. However, since the connecting wire has a small wire diameter, it is difficult to grasp it, and moreover, the connecting wire with a small diameter has to be strongly pinched. It is difficult to engage and disengage from the wire hooking part on the body, and there is also the problem that the fingers that pinch the connecting wire hurt.

[0004] The present invention was devised in view of the above problems, and the purpose is to attach the hook in the connecting wire,
The object of the present invention is to enable the brake arm to be easily engaged and disengaged from the wire hooking portion of the brake arm, and to reduce the pain in the fingers during this engagement and disengagement operation.

【0005】

[Means for Solving the Problems] Accordingly, the present invention has a brake shoe 5 and a pair of first and second brake arms 2, 3 which are pivotally supported on a fixed member.
and a connecting wire 9 connected to the operating wire 6 via a carrier 8, the caliper brake is configured such that each brake arm 2, 3 swings and performs braking when the operating wire 6 is pulled. A hooking body 12 is provided at the tip of the connecting wire 9 to detachably lock the wire hooking portion 31 provided on the brake arm 3, and the hooking body 12 of the connecting wire 9 and the carrier A bulging portion 13 that bulges out relative to the connecting wire 9 is provided between the connecting portion and the connecting portion to the connecting wire 8 .

【0006】

[Function] Since the bulging portion 13 is provided between the hook 12 of the connecting wire 9 and the connecting portion to the carrier 8,
When the hooking body 12 of the connecting wire 9 is to be attached to and disengaging from the wire hooking portion 31 of the brake arm 3, the hooking body 12 is attached to the wire hooking portion by pinching the bulging portion 13 without pinching the connecting wire 9. 31, and the bulge 1 provided on the connecting wire 9 can be easily engaged and disconnected from the connecting wire 9 without pinching the connecting wire 9 directly.
3, the pain in the fingers performing the engagement and disengagement operations can be reduced.

[0007]

[Embodiment] The brake shown in Fig. 1 is a cantilever type centample caliper brake that is attached to the front fork H of a bicycle and used for braking the front wheel F.
The intermediate portions of bell crank-shaped first and second brake arms 2 and 3 are rotatably supported on the pair of fixed members 1, respectively, and the respective fixed members 1 and the first and second brake arms 2 and 3 are rotatably supported. A return spring 4 is interposed between the two brake arms 2 and 3, and a brake shoe 5 is attached to one free end of each of the brake arms 2 and 3.
are placed opposite to each other with the rim R of the bicycle in between,
Further, a wire fixture 7 is provided at the other free end of the first brake arm 2, and a wire hook portion 31 is provided at the other free end of the second brake arm 3. On the other hand, the intermediate part of the operating wire 6, which has one end attached to the brake lever and the other end fixed to the wire fixture 7, is fixed to the carrier 8 in a position-adjustable manner, and the carrier 8 and the second brake The arm 3 is connected to the arm 3 by a connecting wire 9. Further, the connecting wire 9 is formed separately from the operating wire 6, and is provided with a hooking body 12 at its tip portion that removably locks onto a wire hooking portion 31 provided on the second brake arm 3. In addition, a bulging portion 13 that bulges out relative to the connecting wire 9 is provided between the hooking body 12 of the connecting wire 9 and the connecting portion to the carrier 8.

[0008] In the illustrated embodiment, the bulging portion 13 has a structure that can be engaged with the wire hooking portion 31. In this case, by locking the bulging portion 13 to the wire hooking portion 31, the position of the carrier 8 can be lowered, so that, for example, the front wheel F
If there is a mudguard or the like outside, it is possible to prevent the connection wire 9 and the operating wire 6 from coming into contact with the mudguard or the like.

[0009] Furthermore, the wire fixing device 7 consists of a headed bolt with a wire insertion portion and a nut that is screwed into the bolt, and the tightening force of the nut and bolt causes the bolt to tighten. The tip of the operating wire 6 inserted into the wire insertion section is pressed against the inner surface of the wire insertion section and fixed.

[0010] Further, as shown in FIG. 2, the carrier 8 has a stepped surface on one side of a thick circular member, and a lower surface thereof as an insertion portion 81a for the wire 6, and
The stepped portion is a substantially fan-shaped guide surface 81b for guiding the wire 6, and the higher surface portion is provided with a screw hole 81c.
In addition, a carrier body 81 is provided with a latching hole 81d in its lower surface, a thin disc-shaped carrier body 81 having a through hole 82a corresponding to the screw hole 81c, and a latching hole 82b corresponding to the latching hole 81d. The fixing bolt 10 is screwed into the screw hole 81c from the through hole 82a to remove the press plate 82.
is pressed against the carrier body 81, and the wire 6 is pressed against the carrier body 81.
is clamped and fixed between the carrier body 81 and the holding plate 82, and the retaining hole 81
A hook 11 fixed to one end of the connecting wire 9 is hooked to the hook d and 82b.

[0011] When attaching the brake configured as described above to the front fork H of the bicycle, the fixing bolt 1
0, insert the tip of the operating wire 6 whose one end is fixedly supported by the brake lever into the wire insertion part 81a of the carrier body 81, and insert the tip of the operating wire 6 into the first brake arm 2. The operating wire 6 is guided to the side and inserted into the wire insertion part of the wire fixture 7, and the end of the operating wire 6 pulled out of the wire insertion part is pulled in the direction of arrow Y.
As the operating wire 6 is pulled, the other free ends of both brake arms 2 and 3 are pulled toward the carrier 8 via the operating wire 6 and the connecting wire 9, respectively. Both brake arms 2 and 3 rotate about both fixed members 1 as fulcrums, and brake shoe 5 is displaced in a direction approaching both side surfaces Ra of rim R. Moreover, since the operating wire 6 displaces the carrier 8 to the right in FIG.
From the center position between 3 and 3, the second
Displace it toward the brake arm 3 side. As a result, by pulling the operation wire 6,
When the operating wire 6 is pulled to a position where the shoe clearance of both brake shoes 5 is appropriate, the carrier 8 will be located at approximately the center position. Therefore, both brake shoes 5
The clearance adjustment is performed using the operating wire 6.
This can be done simply by towing with one hand.

[0012] Next, when the appropriate shoe clearance position is reached, the operating wire 6 is fixed to the other free end of the first brake arm 2 using the wire fixture 7. The tightening work 7 can be easily performed by holding the end of the operating wire 6 with one hand and operating the tool with the other hand. After this, if there is a positional deviation between the position of the carrier 8 and the center position, fine adjustment is made so that the carrier 8 is located at the center position, the position is corrected, and then the operation wire 6 is fixed to the carrier 8 by the fixing bolt 10. This fixing work can be easily performed using both hands when correcting the position of the carrier 8.

[0013] Furthermore, in the caliper brake configured as described above, by pulling and operating the operation wire 6, both the brake arms 2 and 3 are moved against the return spring 4 and the brake shoes 5
are rotated in the direction in which the brake shoes 5 approach each other (arrow X direction in FIG. 1), thereby bringing the braking surfaces 5a of each brake shoe 5 into pressure contact with both side surfaces Ra of the rim R, thereby braking the front wheel F. At the same time, upon release of this braking operation, both brake arms 2 and 3 are reversely rotated by the restoring force of the return spring 4 in the direction in which both the brake shoes 5 are separated from each other (in the direction of arrow X' in FIG. 1). It is. Furthermore, in the above configuration, when the hooking body 12 of the connecting wire 9 is to be engaged with or detached from the wire hooking part 31 of the second brake arm 3, the connecting wire 9 has the bulging part 1.
3, the hooking body 12 can be engaged with and disengaged from the wire hooking portion 31 by pinching the bulging portion 13, and this operation can be easily performed.

[0014] In addition, the brake of the present invention has a structure in which the first and second brake arms 2 and 3 are distributed to the left and right without intersecting each other as shown in the figure, as well as a brake that has a structure in which the first and second brake arms 2 and 3 are distributed to the left and right without crossing each other. It may be a center-pull type caliper brake with a structure in which the ends of the brakes are crossed and divided into left and right sides.

【0015】

[Effects of the Invention] As described above, the present invention has a brake shoe 5, a pair of first and second brake arms 2, 3 which are pivotally supported on a fixed member, and an operation wire 6 connected to the carrier 8. A caliper brake is provided with a connecting wire 9 to be connected, and is configured such that each of the brake arms 2 and 3 is swung and braked by pulling operation of the operating wire 6, and the tip of the connecting wire 9 has a A hooking body 12 that removably locks onto the wire hooking portion 31 provided on the brake arm 3 is provided, and the hooking body 12 is provided between the hooking body 12 of the connecting wire 9 and the connecting portion to the carrier 8. A bulging portion 13 that bulges out relative to the connecting wire 9
Therefore, when the hooking body 12 of the connecting wire 9 is to be attached to and disengaging from the wire hooking portion 31 of the brake arm 3, the hooking body 12 is removed by pinching the bulging portion 13 without pinching the connecting wire 9. can be easily engaged and disengaged from the wire hooking part 31, and since the bulging part 13 provided on the connecting wire 9 can be pinched without directly pinching the connecting wire 9, the finger that engages and disengages the connecting wire 9. The pain can be reduced and eased.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of a caliper brake according to the present invention.

FIG. 2 is an enlarged sectional view taken along line AA in FIG. 1;

FIG. 3 is an enlarged sectional view taken along line BB in FIG. 2;

[Explanation of symbols]

2, 3...brake arm 5... Brake shoe 9...Connection wire 8...Carrier 12...hanging body 13...bulge 6... Operation wire.

Claims (1)

[Scope of utility model registration request] 1. A pair of first and second brake arms 2 and 3 having a brake shoe 5 and pivotally supported by a fixed member, and a connecting wire 9 connected to an operating wire 6 via a carrier 8. and each brake arm 2, 3 is pulled by pulling the operation wire 6.
The caliper brake is configured to perform braking by swinging, and a hooking body 12 is provided at the tip of the connecting wire 9 to releasably lock onto a wire hooking portion 31 provided on the brake arm 3. With,
A center-pull type caliper brake characterized in that a bulging portion 13 that bulges with respect to the connecting wire 9 is provided between the hooking body 12 of the connecting wire 9 and the connecting portion to the carrier 8.