JPH0134763Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bicycle brake shoe mounting structure in which the brake shoe is held by a shoe holder.

Conventionally, the front, rear, left, and right side walls of a boat-shaped shoe holder are caulked to sandwich the base end of the brake shoe between the side walls, thereby fixing the brake shoe to the shoe holder. Therefore, attaching the brake shoe to the shoe holder requires caulking work, making installation very troublesome and difficult to replace the brake shoe.For example, if the brake shoe becomes worn, it is difficult to replace the brake shoe. The entire shoe holder had to be replaced, which became uneconomical.

In view of the above-mentioned problems, the purpose of the present invention is to provide a brake shoe mounting structure that allows easy attachment/detachment and replacement of the brake shoe with respect to the shoe holder, and that can firmly hold the brake shoe. Its features include: a boat-shaped shoe holder having a bottom wall and a pair of side walls in the width direction; an inner fitting member having a pair of side walls in the width direction and a locking portion protruding inward in the width direction from an end portion of the side wall portions opposite to the bottom wall portion; a brake shoe having a fitting part engaged with the part from the bottom wall side and a shoe body protruding outward from the inner fitting member to a side opposite to the holder; the bottom wall of the holder and the inner fitting member; and a fastener for tightening the bottom wall of the holder, and the brake shoe is fitted between the side walls by tightening the fastener to at least one of the inner surface of the side wall of the holder or the outer surface of the side wall of the inner fitting member. The main feature is that an inclined surface is provided that allows the side wall portion to slide toward the bottom wall while elastically deforming the side wall portion inward in the width direction so as to sandwich the side wall portion.

Hereinafter, the present invention will be described according to the illustrated embodiment. In FIGS. 1 to 4, 1 is a boat-shaped shoe holder, which includes a bottom wall 2, a pair of side walls 3 in the width direction, and a pair of side walls 4 in the longitudinal direction. and has. Reference numeral 5 denotes an internal fitting member made of an elastic metal plate or the like, which includes a bottom wall portion 6 facing the bottom wall 2 of the holder 1 from inside, and a pair of side walls in the width direction fitted between the side wall 3 of the holder 1. 7 and a pair of locking portions 8 protruding inward in the width direction from the opposite end of the side wall portion 7 from the bottom wall portion 6. The end surface and the outer surface of the locking portion 8 are flush with each other.

Reference numeral 11 denotes a brake shoe made of hard rubber, which is fitted into the inner fitting member 5 so as to be freely inserted and removed in the longitudinal direction, and has a fitting part 12 that is engaged with the locking part 8 from the bottom wall part 6 side; The shoe body 13 has a shoe body 13 that protrudes outward from the inner fitting member 5 on the side opposite to the holder 1, and the fitting portion 12 and shoe body 13 form a pair of widthwise fittings that fit into the locking portion 8. Neck 1 with groove 14 formed
They are integrally connected by 5.

18 is a tightening screw for tightening the bottom wall 2 of the holder 1 and the bottom wall part 6 of the internal fitting member 5;
9 and is screwed into a screw hole 17 in the bottom wall portion 6. The inner surface of the side wall 3 of the holder is an inclined surface 20 in which the distance between the side walls 3 gradually becomes narrower toward the bottom wall 2, and the outer surface of the side wall portion 7 of the inner fitting member 5 is formed such that the distance between the outer surfaces becomes smaller. It is an inclined surface 21 that gradually becomes narrower toward the bottom wall portion 6. Holder 1
Before the internal fitting member 5 is fitted into the internal fitting member 5, the angle β between the inclined surfaces 21 of the internal fitting member 5 is set as shown in FIG.
is larger than the angle α formed by the inclined surfaces 21, so that the inner fitting member 5 is inserted into the holder 1 and the bottom wall 2 and the bottom wall portion 6 are tightened with the screw 1.
8, the side wall portion 7 is elastically deformed inward in the width direction with respect to the side wall 3 and slid toward the bottom wall 2, and the brake shoe 11 is tightened between the side wall portions 7.
It is designed to sandwich the fitting part 12 of.

24 is a mounting shaft provided on the inner fitting member 5, and is attached to the bottom wall portion 6.
The holder 1 is protruded outward from the bottom wall 2 of the holder 1 through insertion holes 25 and 26, and the holder 1 is fixed to the tip of a bicycle's brake arm or the like via this attachment shaft 24.

According to the configuration of the above embodiment, the brake shoe 1
1 to the holder 1, first insert the fitting groove 14.
is aligned with the locking part 8, and the fitting part 12 of the brake shoe 11 is longitudinally inserted into the internal fitting member 5 from one longitudinal end of the fitting part 5, and the fitting part 12 of the brake shoe 11 is fitted into the internal fitting member 5 in the longitudinal direction. The inner fitting member 5 may be inserted into the holder 1 so that the inner fitting member 5 protrudes in the opposite direction and the screw hole 17 and the insertion hole 19 are aligned with each other, and then the bottom wall 2 and the bottom wall portion 6 are tightened with the tightening screw 18. By tightening the tightening screw 18, the side wall portion 7 of the inner fitting member 5 slides toward the bottom wall 2 through the inclined surfaces 20 and 21 with respect to the side wall 3, and at this time, the side wall portion 7 moves inward in the width direction. The fitting portion 12 is elastically deformed in the opposite direction, and the fitting portion 12 is strongly held between the side wall portions 7. Therefore, the shoe 11 can be easily attached without requiring caulking work, and the shoe 11 can be easily removed from the holder 1 by removing the tightening screw 18.

6 and 7 show another embodiment, in which the side walls 3 and 4 are formed shorter than the side wall 7 so that the end surface of the side wall 3 of the holder 1 is set back from the outer surface of the locking part 8 of the internal fitting member 5. At the same time, the fitting portion 12 of the shoe body 13
The side outer peripheral portion protrudes toward the side walls 3 and 4 of the holder 1, and when the fitting portion 12 is fitted into the inner fitting member 5, the elastic deformation of the shoe 1 is used to It is forcibly inserted from the locking part 8 side. The other points are the same as those of the previous embodiment, and the same effects are achieved.

In addition, in the above embodiment, the inner surface of the side wall 3 and the side wall portion 7
Although slopes 20 and 21 are formed on both of the outer surfaces, instead of this, the slope 21 may be provided only on the outer surface of the side wall 7 as shown in FIG. 9, or only on the inner surface of the side wall 3 as shown in FIG. An inclined surface 20 may also be provided. Further, in the embodiment described above, the tightening screw 18 is used as a tightening tool for tightening the bottom wall 2 and the bottom wall portion 6, but it is also possible to use a bolt nut or other fastening tool instead.

As described above, according to the present invention, by tightening the fastener 18, the side wall portion 7 is elastically deformed inward in the width direction so that the fitting portion 12 of the brake shoe 11 is sandwiched between the side wall portions 7. However, since the brake shoe 11 can be slid toward the bottom wall 2, the brake shoe 11 can be attached to the shoe holder 1 very easily without requiring caulking work as in the conventional case. Moreover, by removing the fastener 18, the shoe 11 can be easily removed from the holder 1, and the shoe 11 can be easily replaced. Further, the inner fitting member 5 has a locking portion 8 that engages the fitting portion 12, and the inner fitting member 5 is held in a state where its side wall portion 7 is elastically deformed inward in the width direction by tightening with the fastener 18. Since the shoe holder 1 is fitted inside the shoe holder 1, it is possible to hold the shoe holder 1 more firmly than simply holding the shoe 1 by caulking the side wall of the holder, and its practical effect is significant. It's large.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing an embodiment of the present invention, Fig. 2 is a front sectional view, Fig. 3 is a bottom view, Fig. 4 is an exploded perspective view, and Fig. 5 is a holder and internal view. A sectional view of the fitting member, FIG. 6 is a side sectional view showing another embodiment,
FIG. 7 is a front sectional view, FIG. 8 is an exploded perspective view, and FIGS. 9 and 10 are sectional views of a holder and an internal fitting member showing other embodiments, respectively. DESCRIPTION OF SYMBOLS 1...Show holder, 2...Bottom wall, 3...Side wall, 5...Inner fitting member, 6...Bottom wall part, 7...Side wall part, 8...Locking part, 11...Brake seat You, 1
2... Fitting portion, 13... Shoe body, 18... Tightening screw, 20, 21... Inclined surface.

Claims (1)

[Scope of utility model registration request] a boat-shaped shoe holder 1 having a bottom wall 2 and a pair of side walls 3 in the width direction; An internal fitting member 5 having a pair of side wall portions 7 in the width direction and a locking portion 8 protruding inward in the width direction from an end portion of the side wall portion 7 opposite to the bottom wall portion 6;
A fitting portion 12 that is fitted into the inner fitting member 5 and engaged with the locking portion 8 from the bottom wall portion 6 side, and a shoe body that projects outward from the inner fitting member 5 to the side opposite to the holder 1. 13; and a fastener 18 for tightening the bottom wall 2 of the holder 1 and the bottom wall 6 of the internal fitting member 5, and By tightening the fastener 18 on at least one of the outer surfaces of the side wall portion 7,
Slanted surfaces 20 and 21 are provided for sliding the side wall portion 7 toward the bottom wall 2 while elastically deforming the side wall portion 7 inward in the width direction so as to sandwich the fitting portion 12 of the brake shoe 11 between the side wall portions 7. A mounting structure for a bicycle brake shoe characterized by: