TWI630332B - Bicycle disc caliper - Google Patents

Abstract

The heat transfer from the caliper body is suppressed.

The bicycle disc caliper (14) has: at least one A piston (12), a caliper body (14), and a heat conduction suppression structure (16). At least one piston (12) is movable along a predetermined axis (SX). The caliper body (14) has an opposing face (20) that extends parallel to a plane containing a predetermined axis (SX) and faces the bicycle frame (4). The caliper body (14) holds at least one piston (12). The heat conduction suppressing structure (16) is disposed on the opposing surface (20).

Description

Bicycle disc caliper

The present invention relates to brake calipers, and more particularly to bicycle calipers.

In the bicycle caliper, it was studied to form a through hole in the bicycle frame, and the bolt member was passed through the through hole and screwed into the caliper body of the bicycle caliper.

In conventional disc calipers, heat generated by braking may be transmitted from the caliper body to the bicycle frame or the like.

An object of the present invention is to suppress heat conduction from a caliper body.

The bicycle disc caliper according to the present invention includes at least one piston, a caliper main body, and a heat conduction suppressing structure. At least one piston can be along The predetermined axis moves. The caliper body has an opposing face that extends parallel to a plane containing a predetermined axis and faces the bicycle frame. The caliper body holds at least one piston. The heat conduction suppressing structure is disposed on the opposing surface.

In the bicycle caliper, by providing a heat conduction suppressing structure on the opposing surface of the caliper body facing the bicycle frame, heat conduction from the caliper body to the bicycle frame or the like can be suppressed.

The heat conduction suppressing structure includes a plurality of concave portions provided on the opposing faces. With this configuration, the area of contact with the frame facing the facing surface can be reduced by the recess, and heat conduction from the caliper body to the bicycle frame can be easily and effectively suppressed.

The opposing faces have mounting holes for mounting the caliper body to the bicycle frame. The plurality of recesses are provided such that the distance from the center of the mounting hole to the center of the plurality of recesses is equal in the radial direction of the mounting hole. According to this configuration, since the distance between the plurality of recesses and the mounting hole is equal, the heat energy can be uniformly dispersed, and the heat energy concentration can be suppressed.

The plurality of concave portions are provided such that the centers of the plurality of concave portions are spaced apart at equal intervals in the circumferential direction of the mounting hole. With this configuration, heat energy can be more uniformly dispersed, and heat energy concentration can be further suppressed.

The mounting hole can be formed as a threaded hole. According to this configuration, the caliper body can be attached to the bicycle frame or the like by a screw member such as a bolt.

The plurality of concave portions are each formed to have a circular shape when viewed in a direction orthogonal to the opposing surface. With this configuration, the recess is easy to mechanically add The circular shape of the work makes it possible to form the recesses inexpensively and easily.

The bicycle disc caliper further includes a slip preventing structure provided on the opposite side. With this configuration, the movement of the caliper body to the bicycle frame or the like can be suppressed by the anti-slip structure.

The heat conduction suppressing structure includes an intermediate member disposed between the opposing surface and the bicycle frame. According to this configuration, by using a material having a lower thermal conductivity than the caliper body (for example, ceramic, stainless steel, or the like) in the intermediate member, heat conduction from the caliper body to the bicycle frame or the like can be further suppressed.

The caliper main body has an arrangement recessed portion for arranging the intermediate member and disposed on the opposing surface. With this configuration, the movement of the intermediate member can be restricted by arranging the recesses.

The arrangement recess has a mounting hole for mounting the caliper body to the bicycle frame. The intermediate member has a communication hole corresponding to the mounting hole. According to this configuration, the intermediate member and the caliper body can be attached to the bicycle frame or the like in the arrangement recessed portion by the attachment member that mounts the hole and the communication hole.

The mounting hole can be formed as a threaded hole. According to this configuration, the caliper body and the intermediate member can be attached to the bicycle frame by a screw member such as a bolt.

The intermediate member and the arrangement recess are configured to position the intermediate member with respect to the arrangement recess. With this configuration, the movement of the intermediate member can be prevented.

The intermediate member is composed of a material having a thermal conductivity lower than that of the caliper body. With this configuration, the intermediate member can further suppress the The caliper body heats the bicycle frame or the like.

The caliper body is composed of an aluminum alloy. With this configuration, the caliper body can be configured lightly. The caliper body can be cooled by the outside air.

The intermediate member is made of stainless steel. According to this configuration, the intermediate member is made of stainless steel having a lower thermal conductivity than the aluminum alloy, and heat conduction from the caliper body to the bicycle frame or the like can be further suppressed.

The intermediate member is composed of a resin. According to this configuration, since the intermediate member is made of a resin having a lower thermal conductivity than the aluminum alloy, heat conduction from the caliper body to the bicycle frame or the like can be further suppressed. Further, by being made of a resin, the intermediate member can be made lighter.

The intermediate member has a slip-resistant configuration. With this configuration, the movement of the intermediate member with respect to the bicycle frame or the like can be restricted.

According to the present invention, heat conduction from the caliper body can be suppressed.

4‧‧‧Bicycle frame

4a‧‧‧Chain Bracket

10,110,210‧‧‧Bicycle disc calipers

12‧‧‧Piston

14, 114‧‧‧ caliper body

16, 116‧‧‧ Heat conduction suppression structure

18, 118‧‧‧ anti-slip structure

20, 120‧‧‧ relative faces

20a‧‧‧ mounting holes

26. 126‧‧‧ recess

120a‧‧‧Configure recess

130, 230‧‧‧ intermediate components

130a‧‧‧Connected holes

SX‧‧‧Predetermined axis

Fig. 1 is a side view of a bicycle brake caliper in a state in which a bicycle caliper according to a first embodiment of the present invention is attached to a bicycle frame.

Fig. 2 is a side elevational view showing the mounting portion of the bicycle brake caliper of Fig. 1.

Fig. 3 is a bottom view of the bicycle caliper of the first embodiment.

Fig. 4 is a view corresponding to Fig. 2 of the bicycle caliper according to the second embodiment of the present invention.

Fig. 5 is a view corresponding to Fig. 3 of the bicycle caliper according to the second embodiment of the present invention.

Fig. 6 is a plan view of the intermediate member of the second embodiment.

Fig. 7 is a view corresponding to Fig. 2 of a bicycle caliper according to a modification of the second embodiment of the present invention.

<First Embodiment>

In the first embodiment, the bicycle caliper (hereinafter simply referred to as "brake caliper") 10 according to the first embodiment of the present invention can be attached to the bicycle frame 4. The bicycle frame 4 is made of, for example, carbon fiber reinforced resin. In the first and second figures, the state in which the brake caliper 10 is attached to the chain holder 4a of the bicycle frame 4 is shown. In this case, the brake caliper 10 is for braking the disk 6 attached to the rear wheel (not shown).

The brake caliper 10 can also be attached to a front fork (not shown) attached to the front end portion of the bicycle frame 4. In the following descriptions, "front", "back", "left", "right", "upper" and "lower", and the meaning of the same meaning, means that the occupant rides on the handlebar toward the handlebar (both "Before," "Late," "Left," "Right," "Upper," and "Bottom" when viewed from the state of not shown.

The chain bracket 4a constituting the bicycle frame 4 has a first mount 4b and a second mount 4c for mounting the brake caliper 10. The first mount 4b and the second mount 4c are arranged at intervals in the front-rear direction, and are formed in a rectangular shape, and the first hole 4d is opened in the first mount 4b, and the second hole 4e is opened in the second mount 4c. . The chain holder 4a penetrates the first hole 4d and the second hole 4e. The first hole 4d and the second hole 4e are provided to fix the brake caliper 10 to the chain bracket 4a.

The brake caliper 10 is provided to brake the wheel of the bicycle by clamping the disk 6 by means of a brake shoe (not shown). The brake shoe is actuated by at least one piston 12 provided to the brake caliper 10. Since this configuration is generally well known, a detailed description is omitted here.

As shown in FIG. 2, the brake caliper 10 is provided with at least one piston 12, a caliper main body 14, and a heat conduction suppressing structure 16. The brake caliper 10 is further provided with a slip preventing structure 18 (refer to Fig. 3). In the first embodiment, the brake caliper 10 is provided with a pair of pistons 12 that face each other in the left-right direction.

As shown in Fig. 2, in a state in which the caliper body 14 is attached to the chain bracket 4a, the pair of pistons 12 can face the disk 6, respectively. A pair of pistons 12 are movable along a predetermined axis SX of the caliper body 14, respectively. In the present embodiment, the predetermined axis SX extends in a direction substantially orthogonal to the disk 6.

The caliper body 14, for example, is made of an aluminum alloy, and the piston 12 is movably held. The caliper body 14 has at least one opposing face 20 that extends parallel to the plane including the predetermined axis SX and opposes the bicycle frame 4. In the present embodiment, the opposing surface 20 is opposed to the first mount 4b and the second mount 4c, and is interposed in the front-rear direction. There are two compartments.

As shown in FIG. 3, each of the opposing faces 20 has a mounting hole 20a for attaching the caliper body 14 to the bicycle frame 4. The two mounting holes 20a are formed by screw holes arranged in parallel. Mounting holes 20a are provided in the opposing faces 20 for mounting the caliper body 14 indirectly or directly to the bicycle frame 4. The mounting hole 20a is disposed in parallel with respect to a plane orthogonal to the predetermined axis SX. The mounting hole 20a is provided in the hole portion which is closed at the end opposite to the opposing surface 20 in the present embodiment. The mounting hole 20a is formed to be connectable to the first hole 4d and the second hole 4e. The first screw member 22 for attaching the caliper body 14 to the bicycle frame 4 is screwed into the front mounting hole 20a. A second screw member 24 for attaching the caliper body 14 to the bicycle frame 4 is screwed into the rear mounting hole 20b. The first screw member 22 and the second screw member 24 are, for example, bolts having hexagonal holes.

The heat conduction suppression structures 16 are respectively disposed on the two opposing faces 20. The heat conduction suppression structure 16 includes a plurality of concave portions 26 provided on the opposing surface 20. The plurality of recesses 26 include a plurality of first recesses 26a. The plurality of first recesses 26a are formed in a circular shape as viewed in a direction orthogonal to the opposing surface 20. In the first embodiment, the plurality of concave portions 26 further include at least one second concave portion 26b that is not circular.

The plurality of first recesses 26a opposed to the first mount 4b are provided such that the distance L from the center of the attachment hole 20a to the center of the plurality of first recesses 26a is equal in the radial direction of the attachment hole 20a. The first recess of the plurality (here, four) facing the second mount 4c The portion 26a is provided such that the centers of the plurality of first recesses 26a are spaced apart from each other at equal intervals in the circumferential direction of the attachment hole 20a. In the present embodiment, for example, the four first recesses 26a are disposed at intervals of 90 degrees apart. The first recessed portion 26a and the second recessed portion 26b are formed to have a depth of, for example, about 1 mm to 10 mm. The shape and position of the plurality of concave portions 26 are not limited to this embodiment, and can be arbitrarily set.

The anti-slip structure 18 indicated by hatching in FIG. 3 is provided on the opposing surface 20 facing the first mount 4b and the second mount 4c. The anti-slip structure 18 is formed by roughening the surface roughness of the opposing surface 20. The surface roughness of the opposing surface 20 is roughened by, for example, a spiral wire processing or a rough grinding process, and the anti-slip structure 18 is formed on the opposing surface 20. The surface roughness and the processing method of the anti-slip structure 18 can be arbitrarily set as long as a predetermined frictional resistance can be obtained. The anti-slip structure is not limited to surface processing. As the anti-slip structure, for example, another member having a large frictional resistance such as rubber may be provided on the opposing surface.

In the brake caliper 10 according to the first embodiment of the present configuration, a heat conduction suppressing structure 16 for reducing the contact area with the bicycle frame 4 is provided on the opposing surface 20 facing the bicycle frame 4. Thereby, heat conduction from the caliper main body 14 to the bicycle frame 4 can be suppressed.

The movement of the caliper body 14 with respect to the bicycle frame 4 can be suppressed by the anti-slip structure 18 of the facing surface 20.

<Second Embodiment>

In the following description, the same structure as in the first embodiment is shown in the figure. The same reference numerals are used to omit the description, and the structure corresponding to the first embodiment is described in which the two-digit number of the first embodiment is increased by one digit to form a three-digit number.

In the brake caliper 110 of the second embodiment shown in FIG. 4, the heat conduction suppressing structure 116 further includes two intermediate members 130. The intermediate members 130 are respectively disposed between the two opposing faces 20 and the chain bracket 4a. Specifically, the two intermediate members 130 are disposed between the first mount 4b and the opposing surface 20 and between the second mount 4c and the opposing surface 20. In the second embodiment, a gap is formed between the opposing surface 20 and the first mounting seat 4b and between the opposing surface 20 and the second mounting seat 4c by the intermediate member 130. Thus, no anti-slip structure 18 is provided on the opposing face 20.

As shown in FIGS. 5 and 6, the caliper body 114 has a mounting hole 120a, and each of the opposing faces 20 has an arrangement recess 114a for arranging the intermediate member 130. The concave portion 114a is disposed, for example, in a rectangular shape between the attachment hole 120a and the first recess 126a. The intermediate member 130 and the arrangement recess 114a are configured to position the intermediate member 130 with respect to the arrangement recess 114a.

As shown in Fig. 6, the intermediate member 130 is composed of a material having a thermal conductivity lower than that of the caliper body 114. In the second embodiment, the intermediate member 130 is made of, for example, stainless steel. The intermediate member 130 is formed in a rectangular shape for positioning in the arrangement recess 114a. The intermediate member 130 has a communication hole 130a corresponding to the mounting hole 120a. The shape of the concave portion 114a and the intermediate member 130 is not limited to a rectangular shape as long as the intermediate member 130 can be positioned. It can be arbitrarily set.

In the second embodiment, the anti-slip structure 118 is provided in the intermediate member 130 that faces the first mount 4b and the second mount 4c. Then, the intermediate member 130 has the anti-slip structure 118 indicated by hatching in FIG. 6 on the face portion 130b facing the first mount 4b and the second mount 4c. The anti-slip structure 118 is formed by roughening the surface roughness of the face portion 130b in the same manner as in the first embodiment.

The plurality of concave portions 126 provided on the opposing surface 20 are formed of only the circular first concave portion 126a as shown in Fig. 5. The plurality of first recesses 126a opposed to the first mount 4b are provided such that the distance L from the center of the attachment hole 20a to the center of the plurality of first recesses 126a is equal in the radial direction of the attachment hole 20a. The plurality of first recesses 126a opposed to the second mount 4c are provided such that the centers of the plurality of first recesses 126a are spaced apart from each other at equal intervals in the circumferential direction of the attachment hole 20a.

<Modification of Second Embodiment>

In addition to the arrangement recessed portion 114a provided in the caliper body 114, the brake caliper 210 according to the modification of the second embodiment shown in FIG. 7 is provided to position the intermediate member 230 to the first mount 4b and the second. An additional arrangement recess 204f of the mount 4c is provided. In the modification, the anti-slip structure 118 is not provided in the intermediate member 230. A gap is formed between the opposing surface 120 and the first mount 4b and the second mount 4c. In a variant, the caliper body 114 can be positioned via the intermediate member 230 to the chain bracket 4a. The material of the intermediate member 230 is made of, for example, stainless steel.

<Other Embodiments>

The above is an embodiment of the present invention, and the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. In particular, the plural embodiments and modifications described in the present specification can be arbitrarily combined as needed.

(a) In the above embodiment, the brake caliper 10 is attached to the chain bracket 4a constituting the bicycle frame 4, and the brake caliper of the invention may be attached to, for example, a front fork (not shown) of the bicycle. Or a seat cushion bracket of the bicycle frame 4 (not shown).

(b) In the above embodiment, the mounting hole 20a is provided with a hole having only one end side open, and the mounting hole 20a may be formed as a through hole.

(c) In the second embodiment, the material of the intermediate members 130 and 230 is exemplified by stainless steel, and the material of the intermediate member 130 may be any material having a thermal conductivity lower than that of the caliper main body 114. For example, ceramic or resin can be used. When the intermediate members 130 and 230 are resins, a polyimide, a polyacetal resin, a polyacetal resin, a fluorinated vinyl resin, a phenol resin, or the like is preferable. In particular, phenol resins are cheaper and have higher heat resistance, so that they are better.

(d) In the above embodiment, the brake caliper in which the first screw member 22 and the second screw member 24 are screwed into the caliper body is disclosed, but the present invention is not limited thereto. The present invention is also applicable to a brake caliper that is screwed into the frame by passing at least one threaded member through the caliper body.

Claims (15)

A bicycle disc caliper provided with: at least one piston, a caliper body, and a heat conduction suppressing structure; the at least one piston is movable along a predetermined axis; the caliper body has a parallel extension with respect to a plane including the predetermined axis And the opposing surface facing the bicycle frame; the caliper body for holding the at least one piston; the heat conduction suppression structure being disposed on the opposite surface; the heat conduction suppression structure comprising: a plurality of the opposite surfaces Concave. The bicycle disc caliper according to claim 1, wherein the opposite surface has: a mounting hole for mounting the caliper body to the bicycle frame; and the plurality of recesses are disposed from a center of the mounting hole to The distance from the center of the plurality of recesses is equal in the radial direction of the mounting hole. A bicycle disc caliper according to claim 2, wherein the plurality of recesses are provided such that centers of the plurality of recesses are spaced apart from each other at equal intervals in a circumferential direction of the mounting hole. A bicycle disc caliper according to claim 2, wherein the mounting hole is configured as a threaded hole. The bicycle disc caliper according to any one of claims 1 to 3, wherein the plurality of concave portions are formed to have a circular shape when viewed from a direction orthogonal to the opposing surface. A bicycle disc caliper provided with: at least one piston, a caliper body, and a heat conduction suppressing structure; the at least one piston is movable along a predetermined axis; the caliper body has a parallel extension with respect to a plane including the predetermined axis And the caliper body is configured to hold the at least one piston; the heat conduction suppression structure is disposed on the opposite surface; and the bicycle caliper is provided on the opposite surface Anti-slip construction. A bicycle disc caliper provided with: at least one piston, a caliper body, and a heat conduction suppressing structure; the at least one piston is movable along a predetermined axis; the caliper body has a parallel extension with respect to a plane including the predetermined axis And the caliper body is configured to hold the at least one piston; the heat conduction suppression structure is disposed on the opposite surface; and the heat conduction suppression structure includes: the opposite surface and the An intermediate member between the bicycle frames; wherein the caliper main body has an arrangement recessed portion that is disposed on the opposing surface to dispose the intermediate member. A bicycle disc caliper according to claim 7, wherein the arrangement recess has a mounting hole for attaching the caliper body to the bicycle frame, and the intermediate member has a communication hole corresponding to the mounting hole. A bicycle disc caliper according to claim 8 wherein said mounting hole is formed as a threaded hole. The bicycle disc caliper according to any one of claims 7 to 9, wherein the intermediate member and the disposing recess are configured to position the intermediate member with respect to the disposition recess. The bicycle disc caliper according to any one of claims 7 to 9, wherein the intermediate member is made of a material having a thermal conductivity lower than that of the caliper body. A bicycle disc caliper according to claim 11, wherein the caliper body is made of an aluminum alloy. A bicycle disc caliper according to claim 12, wherein the intermediate member is made of stainless steel. A bicycle disc caliper according to claim 12, wherein the intermediate member is made of a resin. A bicycle disc caliper according to any one of claims 7 to 9, wherein the intermediate member has a slip-stop configuration.