JPH0234159Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates primarily to a caliper brake that is attached to a front fork or a back fork of a bicycle frame.

(Prior Art) In general, this type of caliper brake has a box-shaped shoe holding part and a screw protruding outward from the back of the shoe holding part, as described in, for example, Japanese Utility Model Publication No. 1716/1983. A brake shoe is held in each of the shoe holding parts of a pair of shoe holders having a part, and the threaded part is attached to the holder mounting part of a pair of brake arms by a nut screwed into the threaded part. The wheel rim is fixed, and each brake arm is swung by operating a brake lever, and each brake shoe is pressed against a wheel rim to perform braking.

By the way, each of the brake arms is made of metal,
It is formed by forging or casting, and the surface is plated.

(Problems to be Solved by the Invention) However, if the brake arm is formed by forging or casting, the external design of the brake arm will be limited, and the decorative value cannot be enhanced. It was hot.

By the way, in order to solve this problem, it is conceivable to cover the brake arm with a synthetic resin covering.

However, since the shoe holder attached to each brake arm is made of metal to increase durability in order to hold the brake shoe, if only the brake arm is covered with the covering, The brake arm and brake shoe do not match, giving the impression of a foreign object.

Therefore, in order to eliminate this foreign body feeling, it is conceivable to cover the entire brake arm and the shoe holder with a synthetic resin covering.

However, if the shoe holder is covered with a covering,
A covering body that covers the shoe holder is present between the contact surface between the shoe holding part of the shoe holder and the brake arm, and the tightening force of the nut is applied to the shoe holding part through this covering. Therefore, there is a problem in that the fixing strength of the shoe holder by tightening the nut is reduced. or,
Although it is conceivable to separately provide a holder cover to cover the shoe holder, in this case, there is a problem that it becomes difficult to attach the holder cover.

The present invention solves the above-mentioned problem by providing two cover bodies separately from the show holder made of metal. Of the two cover bodies,
Appearance when the brake arm is covered with the covering body by covering the side surface of the shoe holding part in the shoe holder with one cover body and covering the back side of the shoe holding part and the nut with the other cover body The above appearance can be improved, and the fixing strength of the shoe holder can be sufficiently increased by tightening the nut.

(Means for solving the problem) Therefore, the present invention has a box-shaped shoe holding part 6.
1, 71, and screw portions 62, 72 protruding outward from the back surface of the shoe holding portions 61, 71.
The shoe holding portion 6 of the pair of shoe holders 6 and 7
The brake shoes 4 and 5 are held at the brake arms 1 and 71, respectively, and the pair of brake arms 2 and 3 are mounted as holders using nuts 8 and 9 which are screwed into the threaded parts 62 and 72, respectively. Part 21, 3
A caliper brake fixed to 1,
A frame-shaped first cover body 1 that covers the side surfaces of the shoe holding parts 61 and 71 in the shoe holders 6 and 7;
2, 13, and a second cover body 14 that covers the rear surfaces of the shoe holding parts 61, 71 and the nuts 8, 9,
15, and these first cover bodies 1
2, 13 and second cover bodies 14, 15 are provided.

(Function) With the pair of shoe holders 6 and 7 holding the brake shoes 4 and 5 fixed to the brake arms 2 and 3 by tightening the nuts 8 and 9, the shoe holders 6 and 7 are While inserting the first cover bodies 12 and 13 on the outside of the shoe holding parts 61 and 71,
The second cover bodies 14 and 15 are attached to the shoe holding portion 6.
1, 71 and the nuts 8, 9,
The second cover bodies 14, 15 are connected to the first cover bodies 12, 13 by the coupling means provided between the second cover bodies 14, 15 and the first cover bodies 12, 13.
The shoe holder 6, 7 can be combined with the nut 8, 9 while improving the external design.
In addition to sufficiently increasing the fixing strength of the brake arms 2 and 7, the shoe holders 6 and 7 can be
3, the first cover bodies 12, 13 and the second cover bodies 14, 15 can be easily attached.

(Example) What is shown in the drawing is a side-pull type caliper brake, in which a C-shaped brake arm 2 having a holder attachment part 21 at one end and a C-shaped brake arm 2 having a holder attachment part 21 at one end are attached to a pivot shaft 1 to be attached to the front fork or back fork of a bicycle. A pair of shoe holders holding brake shoes 4 and 5 are mounted on the holder mounting portions 21 and 31 of the brake arms 2 and 3, respectively. 6 and 7 are fixed by tightening nuts 8 and 9, while a fixture 10 for fixing one end of the operating wire W is attached to the other end of the C-shaped brake arm 2, and the other end of the Y-shaped brake arm 3 is fixed. At the end, there is a support 11 for the outer tube O that guides the wire W.
is attached so that the brake arms 2 and 3 are swung and braked by pulling the wire W.

Further, each of the shoe holders 6 and 7 includes a box-shaped shoe holding section 61 and 71;
Threaded portions 62, 72 protruding outward from the back surface of 71
The brake shoes 4 and 5 are held in the shoe holding parts 61 and 71, and the threaded parts 62 and 72 are connected to the front packing holder mounting parts 21 and 3.
The threaded portion 62 is inserted into the long holes 22 and 32 provided in 1 and projects outward from the long holes 22 and 32,
The nuts 8 and 9 are screwed into the tip portions of the holder 72, and the shoe holders 6 and 7 are fixed to the holder attachment portions 21 and 31 by tightening the nuts 8 and 9.

However, in the embodiment shown in FIGS. 1 to 5, the shoe holding portion 6 in the shoe holders 6, 7
a frame-shaped first cover body 12 that covers the side surfaces of 1 and 71;
13, and second cover bodies 14, 15 that cover the back surfaces of the shoe holding parts 61, 71 and the nuts 8, 9.
These first cover bodies 12,
13 and the second cover bodies 14 and 15 are provided.

In the above configuration, the first cover body 12,
13 and the second cover bodies 14, 15 are integrally formed using synthetic resin via thin hinges 16, 17, and the first cover bodies 12, 13 are formed of the respective shoe holding parts 61, 71. It is formed into a rectangular shape with fitting holes 12a and 13a that fit on the outside,
Further, the second cover bodies 14 and 15 are formed into a rectangular shape with a size corresponding to the first cover bodies 12 and 13, and the lengths of these first cover bodies 12 and 13 and second cover bodies 14 and 15 are The thin hinges 16 and 17 forming part of the coupling means are provided at one end in the width direction, and the locking portions 12b and 13b forming a portion of the coupling means and the locking portions are provided at the other end. Engagement portions 14a, 15a are provided, and engagement of the engagement portions 14a, 15a with the locking portions 12b, 13b closes the second cover bodies 14, 15, and disengagement closes the second cover bodies 14, 15. The cover bodies 14, 15 can be opened to the first cover bodies 12, 13, and the inner surfaces of the second cover bodies 14, 15 are provided with grooves 14b for receiving the holder attachment parts 21, 31. 15b and recesses 14c and 15c for receiving the nuts 8 and 9.

Further, in the illustrated embodiment, the first cover body 1
Guide bodies 18 and 19 having guide surfaces 18a and 19a that come into contact with the outer periphery of the wheel A and guide the wheel toward the center between the brake shoes 4 and 5 are integrally provided on the lower surfaces of 2 and 13. It is set up.

Further, each of the brake arms 2 and 3 is formed by pressing a metal plate, and its surface is covered with synthetic resin coverings 20 and 30, and the holder mounting portions 21 and 31 are Show holding part 6
1 and 71 and the nuts 8 and 9 to expose the brake arms 2 and 3. 8 and 9 are in direct contact with the brake arms 2 and 3.

In addition, 40 and 50 in the figure are washers.

The present invention is constructed as described above, and the shoe holders 6 and 7 have threaded portions 62 and 7, as in the conventional case.
By tightening the nuts 8 and 9 that are screwed into the brake arms 72, the brake arms are fixed to the holder attachment portions 21 and 31 of the brake arms 2 and 3.

Then, the coupling between the locking parts 12b, 13b and the engaging parts 14a, 15a of the first cover bodies 12, 13 and the second cover bodies 14, 15 is released, and the second cover bodies 14, 15 are attached to the first cover body. 12, 13, the first cover bodies 12, 13 are attached to the shoe holding parts 61, 71 of the shoe holders 6, 7.
The second cover body 14, 15 is inserted into the outside and covers the side surfaces of these shoe holding parts 61, 71.
, with the thin hinges 16 and 17 as the center
The second cover bodies 14, 15 cover the rear surfaces of the shoe holding parts 61, 71 and the nuts 8, 9, and the engaging parts 14a, 15a are closed to the locking parts 12b, 13b. The second cover bodies 14, 15 are reliably connected to the first cover bodies 12, 13 by engaging with the first cover bodies 12, 13.

In this way, the shoe holders 6, 7 can be completely covered including the nuts 8, 9 that fix the shoe holders 6, 7, and the holder mounting portions 21, 7 of the shoe holders 61, 71 can be covered completely. 31 can be brought into direct contact with the mounting parts 21, 31, and the fixing strength of the shoe holders 6, 7 by tightening the nuts 8, 9 can be sufficiently increased. Using the shoe holders 6, 7, the first cover body 1 is attached with the shoe holders 6, 7 fixed to the brake arms 2, 3.
2, 13 and the second cover bodies 14, 15 can be attached simply and easily.

Also, when assembling wheel A, such as when replacing wheel A with the caliper brake attached to the front fork or back fork, the wheel A is
Guide body 1 provided on the first cover body 12, 13
Guide surface 18a or 19 of either one of 8 and 19
Since the wheel A is guided to the center side between the brake shoes 4 and 5 at point a, the wheel A is guided to the center side between the brake shoes 4 and 5.
It can be easily inserted between the wheels, making it easier to assemble the wheels.

In addition, in the embodiment described above, the first cover body 1
2, 13 and the second cover bodies 14, 15 are made of synthetic resin, but they may be made of other materials. , thin hinge 16,1
7, locking parts 12b, 13b and engaging part 14a,
15a, but the thin hinges 16 and 17 may be omitted and the connection may be made using the locking portions 12b and 13b and the connecting portions 14a and 15a, but the structure is not particularly limited. It is not something that can be done.

(Effect of the invention) As described above, the present invention has the box-shaped shoe holding part 6.
1, 71, and screw portions 62, 72 protruding outward from the back surfaces of the shoe holders 61, 71,
Frame-shaped first cover bodies 12 and 13 that cover the side surfaces of 71
and second cover bodies 14 and 15 that cover the back surfaces of the shoe holding parts 61 and 71 and the nuts 8 and 9 that are screwed into the threaded parts 62 and 72, and these first cover bodies 12 and 13 and Second cover body 1
Since the connecting means for connecting the brake arms 2 and 15 is provided, even if the brake arms 2 and 3 are covered with a synthetic resin covering, not only can the shoe holder feel like a foreign object, but also the The degree of freedom in design selection can be increased and the decorative value thereof can be increased. Moreover, with the shoe holders 6 and 7 fixed to the brake arms 2 and 3, the first cover bodies 12 and 13 and Since the second cover bodies 14 and 15 can be attached, the shoe holder 6 and
7 can be sufficiently increased in fixing strength.

Moreover, not only can an existing shoe holder be used, but the first cover bodies 12, 13 and the second cover bodies 14, 15 can be attached with this shoe holder fixed to the brake arms 2, 3. Therefore, these first cover bodies 1
2, 13 and the second cover bodies 14, 15 can be attached simply and easily.

[Brief explanation of the drawing]

Figure 1 is a perspective view of only the main parts of the caliper brake of the present invention with the second cover body open, and Figure 2 is a perspective view of only the main parts of the caliper brake of the present invention with the second cover body closed. FIG. 3 is a perspective view of only the first and second cover bodies, FIG. 4 is a perspective view of only the shoe holder holding the brake shoe, and FIG. 5 is a partially cutaway front view of the whole. . 2, 3... Brake arm, 21, 31... Holder mounting part, 4, 5... Brake shoe, 6,
7... Shoe holder, 61, 71... Shoe holding part, 62, 72... Threaded part, 8, 9... Nut, 12, 13... First cover body, 14, 15...
...Second cover body.

Claims (1)

[Scope of utility model registration request] A pair of shoe holders 6 including box-shaped shoe holders 61, 71 and threaded portions 62, 72 protruding outward from the back surfaces of the shoe holders 61, 71;
The brake shoes 4 and 5 are held in the shoe holding parts 61 and 71 of 7, respectively, and the threaded parts 62 and 72 are connected to the pair of brake arms by nuts 8 and 9 that are screwed into the threaded parts 62 and 72, respectively. The caliper brake is fixed to the holder mounting portions 21 and 31 of 2 and 3, and the shoe holder 6,
frame-shaped first cover bodies 12, 13 that cover the side surfaces of the shoe holding parts 61, 71 in the shoe holding parts 7, and second cover bodies 14, 15 that cover the back surfaces of the shoe holding parts 61, 71 and the nuts 8, 9. Along with forming
A caliper brake characterized in that a coupling means for coupling the first cover bodies 12, 13 and the second cover bodies 14, 15 is provided.