JPS6232953Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a shoe mounting device for a bicycle caliper brake.

Conventionally, a vertical hole is formed at the tip of each brake arm of a pair of caliper brakes, and a mounting bolt provided integrally with the brake shoe is inserted into the vertical hole and the protruding end is connected to the nut. The brake shoe was fixed to the brake arm through fastening. The opposing position between the shoe block of the brake shoe and the rim of the wheel is adjusted by sliding the mounting bolt vertically within the groove of the vertical hole. However, the adjustment range is within the range of the vertical hole and is not very large, so if a bicycle enthusiast changes to a wheel with a different diameter, the diameter of the rim will naturally be different, and within the above adjustment range, the shoe block will not work. A problem arises in that an appropriate position facing the rim cannot be obtained. Therefore, bicycle enthusiasts and the like are required to change the mounting position of the brake or to use specially manufactured brakes, resulting in the disadvantage that modification costs are high. Furthermore, when the wheel diameter is changed frequently, it is necessary to replace the brake each time, resulting in a disadvantage that work efficiency is also poor.

Therefore, in view of the above problems, the present invention has been developed to enlarge the adjustment range of the brake shoe so that it can be adjusted appropriately for wheels of different sizes and diameters.The features of this invention are as follows: In the bicycle caliper brake 1, vertically elongated mounting holes 14, 15 are provided at the tips of the brake arms 2, 3, and a shoe structure 16 is detachably mounted in the mounting holes 14, 15. , a shoe holding member 18, a shoe 17 rotatably provided on one side of the shoe holding member 18, and a shaft center parallel to and spaced apart from the rotation axis of the shoe 17. protrudingly provided on the other side of the shoe holding member 18;
and a shaft member 20 having a male threaded portion 19,
By inserting the shaft member 20 into the mounting holes 14 and 15 so as to be relatively rotatable, and tightening and loosening the nut member 32 to the male threaded portion 19, the shaft member 20 is attached to the shaft member 20.
The shoe structure 16 is attached to the brake arms 2 and 3 so that the shoe structure 16 can be freely fixed and released from the shoe holding member 18.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Figures 1 to 4 show the first embodiment of the present invention, 1 is a caliper brake, and the brake is called a large arch or C-shaped arch. 1 brake arm 2,
A second brake arm 3 called a small arch or a Y-shaped arch is provided, and the middle of the first brake arm 2 and one end of the second brake arm 3 are overlapped with each other and pivoted to a center bolt 4 so as to be relatively rotatable. There is. Reference numeral 5 denotes a brake spring, which has an arch-like overall shape, and its central portion is held by a spring holder (not shown) that is pivotally supported by the center bolt 4, and its open ends are attached to the back surfaces of each brake arm 2, 3. The brake arms 2 and 3 are respectively engaged with protrusions 6 and 7 provided at symmetrical positions, thereby elastically biasing the brake arms 2 and 3 outward from each other around the axis of the center bolt 4. The second brake arm 3 has an arm portion 8 protruding from the middle thereof, and a connector 11 for fixedly supporting an end portion of an outer wire 10 of the Bowden wire 9 is provided at the free end of the arm portion 8. An inner wire 12 for brake operation passes through the connector 11, and its end is connected to one end 2a of the first brake arm 2 by a connector 13. Vertically long mounting holes 14 and 15 are provided at the lower ends of each of the brake arms 2 and 3, respectively.
15, a shoe structure 1 that constitutes a brake shoe;
6 are detachably attached to each other facing each other.

As shown in FIGS. 2 and 3, the shoe structure 16 includes a shoe 17, a rectangular plate-shaped shoe holding member 18, a shaft member 20 having a male threaded portion 19, and a disc-shaped holder 21. and a circular cover body 22. The shoe 17 consists of a shoe block 23 made of a wear-resistant rubber material or the like and having a trapezoidal cross section, and a boat-shaped shoe holder 24 that fixedly holds the shoe block 23. is caulked to one side of one end of the shoe holding member 18 with a rivet rivet 25 through an insertion hole appropriately opened at an eccentric position of the cover body 22, and the shoe 17, the cover body 22, and the shoe holding member are crimped to one side. The members 18 are rotatable relative to each other around the axis of the caulking stud 25. In addition, caulking stud 2
One end of 5 is fixed to the shoe holder 24.
The shaft member 20 is fixed to the other end of the shoe holding member 18 in a protruding manner, with its axis parallel to and spaced apart from the axis of the caulking stud 25 . The holding body 21 has an insertion hole 26 through which the shaft member 20 is inserted.
and a circular recess 27 into which the shoe holding member 18 is rotatably embedded around the axis of the insertion hole 26. Through the rotation of the shoe holding member 18, the caulking stud 25
An annular recess 29 is formed at the bottom of the circular recess 27 in which the caulking portion 28 is relatively slidable. entered, and
An annular wall 30 protruding from one side of the outer periphery of the cover body 22
is fitted into the circular recess 27 so as to be relatively rotatable. Then, the shaft member 20 protruding from the insertion hole 26 is inserted into the mounting hole 15, and a cap nut 32 (nut member) is screwed onto the male threaded portion 19 of the protruding end via a washer 31. bag nut 32
By fastening, the cap nut 32 and the shoe holding member 1 are
8, the brake arm 3 and the holding body 21, and the caulking portion 28 of the caulking stud 25 and the annular recess 29 of the holding body 21 are clamped, and the brake arm 3 and the holding body 21 are pressed together.
1 is fixed, and the shoe holding member 18 is fixed to the holding body 21.
A shoe 17 is fixed thereto, and a shoe structure 16 is fixed to the brake arm 3 here. Further, the other shoe structure 16 is also fixed to the brake arm 2 in the same manner as described above. As shown in FIG. 1, a rim 34 provided on a bicycle wheel 33
The shoe blocks 23, 23 of each shoe structure 16, 16 face each other on both sides, and the shoe blocks 23, 23 are movable toward and away from the side wall of the rim 34.

Next, the adjustment of the opposing positions of the rim 34 and the shoe block 23 will be described. First, when the cap nut 32 is loosened, the crimped portion 28 of the crimped rivet 25 becomes slidable relative to the annular recess 29, and the shoe 17 becomes rotatable relative to the shoe holding member 18. Furthermore, the shaft member 20 slides relative to the mounting hole 15, and the shoe 17 rotates about the shaft member 20, so that the shoe block 23 of the shoe 17 is fixed to the rim 22.
After adjusting the position of the cap nut 3 to the appropriate position of the cap nut 4,
Simply tighten 2.

The first embodiment of the present invention is constructed as described above, and when the shoe 17 rotates around the shaft member 20, the shoe holding member 18 is held at an eccentric position distant from the shaft member 20, which is the rotation axis. Since it is rotatably fixed, the shoe 17 can be vertically adjusted within the range _l1 through the rotation, as shown in FIGS. 2 and 4. Furthermore, shaft member 2
0 and the mounting hole 15 through relative sliding.
is vertically adjustable within range _l2 . That is, as shown in FIG. 4, the shoe 17 can be vertically adjusted in position within the total range L of range _l1 and range _l2 , and the adjustment range L is large, so that wheels of different diameters can be used. 33, the degree of adaptability is large, and the shaft member 2 of the shoe holding member 18
By rotating around 0, the shoe 17 can be finely adjusted back and forth, and the appropriate position facing the rim 34 of the wheel 33 can be determined by tightening and loosening the cap nut 32 and adjusting the shaft member 2.
0 and the mounting hole 15 and a simple adjustment operation by rotating the shoe 17 around the shaft member 20. That is, by tightening the cap nut 32, the shoe structure 16 and the brake arm 3 are fixed, and the shoe 17 and the shoe holding member 18 are fixed at the same time, resulting in good work efficiency. Furthermore, there is no need to change the mounting position of the brake, unlike in the past, and work efficiency is good even when the diameter of the wheel 33 is frequently changed. Further, shoe components 16, 16 are detachably attached to the respective attachment holes 14, 15 of the conventional brake arms 2, 3,
No specially manufactured brakes are required and it can be provided at low cost. Further, the shoe holding member 18 is embedded in the circular recess 27 of the holding body 21, and the cover body 22 is fitted into the circular recess 27.
7, it is possible to prevent dirt, dust, water, etc. from entering into the circular recess 27.

FIG. 5 shows a second embodiment of the present invention, in which the shoe holding member 18 is connected to a circular recess 27 of the holding body 21.
It is formed into a disc shape that is fitted into the inside of the holder so as to be relatively rotatable.

FIG. 6 shows a third embodiment of the present invention, in which the shoe holding member 18 is directly pressed and fixed to the peripheral edge of the mounting hole 15 of the brake arm 3.

In the above embodiments of the present invention, a separate shaft member 20 is fixed to the shoe holding member 18, but a structure in which the shaft member 20 is integrally formed may also be used, and the present invention is not limited to the embodiments.

In the present invention, a shoe component attached to a mounting hole of a brake arm can be rotatably fixed to a shoe holding member, a shaft member protruding from one side of the shoe holding member, and the other side of the shoe holding member. A conventional structure in which the adjustment range of the facing position between the shoe block and the rim is adjusted only by the elongated hole of the mounting hole. The shoe is larger than the previous model, and is therefore highly adaptable to changing wheels with different diameters.Furthermore, by rotating the shoe holding member around the shaft member, the shoe can be finely adjusted forward and backward, making it possible to change the wheel diameter. Even in this case, it is possible to easily obtain the proper opposing position between the wheel rim and the shoe block. Further, since the shoe can be freely fixed and released from the shoe holding member by tightening and loosening the male screw portion of the shaft member and the nut member, efficiency in adjustment work is improved. Furthermore, a conventional brake arm can be used as the brake arm to which the shoe structure is attached, which has the advantage of being inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the first embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main part of Fig. 1, Fig. 3 is an exploded perspective view of the main part of Fig. 1, and Fig. 4 is a The position adjustment explanatory diagram in the figure, and FIGS. 5 and 6 are sectional views of main parts showing other embodiments. 1... Caliper brake, 2... First brake arm, 3... Second brake arm, 14,1
5...Mounting hole, 16...Show component, 17...
shoe, 18... shoe holding member, 19... male threaded portion, 20... shaft member, 32... cap nut.

Claims (1)

[Scope of utility model registration request] In the bicycle caliper brake 1, vertically long mounting holes 14, 15 are provided at the distal ends of the brake arms 2, 3, and a shoe structure 16 is detachably mounted in the mounting holes 14, 15.
The shoe holding member 18 and the shoe holding member 1
Shoe 17 is rotatably provided on one side of 8.
and a shaft member 2 having an axis parallel to and spaced apart from the rotational axis of the shoe 17, protruding from the other side of the shoe holding member 18, and having a male threaded portion 19.
0, and the shaft member 20 is fitted into the mounting holes 14, 1.
5 so as to be relatively rotatable, and by tightening and loosening the nut member 32 to the male threaded portion 19,
A shoe mounting device for a bicycle caliper brake, characterized in that the shoe 17 is detachable from the shoe holding member 18 and the shoe component 16 is attached to the brake arms 2, 3.