DE102016015743B3 - BICYCLE DISC BRAKE CALIPER - Google Patents

Abstract

Bicycle disc brake caliper (10, 110, 210) having: at least one piston (12) movable along a predetermined axis (SX); a brake caliper body (14, 114) having a bearing surface (20, 120) and the holds at least one piston (12), the bearing surface (20, 120) running parallel to a plane having the predetermined axis (SX) and facing the bicycle frame (4); and a heat conduction suppressing structure (16, 116) provided on the support surface (20, 120).

Description

The present invention relates to a brake caliper, in particular a bicycle disc brake caliper.

In connection with the bicycle disc brake caliper, a construction has been discussed in which a through hole is formed on the bicycle frame and a screw member for screwing into the caliper body of the bicycle disc brake caliper is passed through the through hole. DE 60 2006 000 813 T2 discloses, for example, a bicycle disc brake caliper that is bolted to the front fork. Also shows DE 20 2013 008 253 U1 a disc brake caliper, which is equipped with thermally insulating materials to reduce the heat transfer from the brake pads to the caliper housing. US 2004/0 094 375 A1 also describes a bicycle disc brake caliper in which the heat transfer from the brake pads to the piston and the brake caliper can be reduced by an insulating arrangement.

With these conventional disc brake calipers, the heat generated by braking can still be transferred from the caliper body to the bicycle frame and the like. Proceeding from the prior art, the present invention is therefore based on the object of suppressing the conduction of heat from the brake caliper body.

The object is achieved according to the invention with a bicycle disc brake caliper having the features of claim 1. Advantageous further developments of the bicycle disc brake caliper are described in subclaims 2 to 17.

The bicycle disc brake caliper according to the present invention includes at least a piston, a caliper body, and a heat conduction suppressing structure. At least one piston is movable along a given axis. The brake caliper body has a bearing surface which runs parallel to a plane which has the predetermined axis and which faces the bicycle frame. The caliper body also holds at least one piston. The heat conduction suppressing structure is provided on the support surface.

In this bicycle disc brake caliper, it is possible to suppress heat conduction from the caliper body to the bicycle frame and the like by providing the heat conduction suppressing structure on the support surface of the caliper body that faces the bicycle frame.

The heat conduction suppressing structure may have a plurality of recesses provided on the support surface. According to this embodiment, it is possible to reduce the area of the support surface in contact with the frame by means of the cutouts and to prevent heat conduction from the brake caliper body to the bicycle frame easily and effectively.

The support surface can have a mounting hole for mounting the brake caliper body on the bicycle frame. The multiple recesses can be provided such that the distances from the center of the mounting hole to the centers of the multiple recesses are the same in the radial direction of the mounting hole. According to this configuration, since the distances from the mounting hole to the plurality of recesses are the same, heat can be evenly distributed and heat build-up can be suppressed.

The plurality of recesses can be provided such that the centers of the plurality of recesses are equally spaced in the circumferential direction of the mounting hole. According to this embodiment, it is possible to distribute heat even more evenly and to further prevent heat build-up.

The mounting hole can be designed as a screw hole. According to this configuration, it is possible to mount the caliper body on the bicycle frame and the like by means of a screw component such as a bolt.

When viewed from the direction orthogonal to the support surface, the plurality of recesses can be shaped into circles. According to this configuration, since the recesses are circular and easy to machine, the recesses can be formed inexpensively and easily.

The bicycle disc brake caliper can also have an anti-skid structure provided on the support surface. According to this embodiment, it is possible to prevent the movement of the brake caliper body in relation to the bicycle frame and the like by means of the anti-skid structure.

The heat conduction suppressing structure may have an intermediate member provided between the support surface and the bicycle frame. According to this configuration, it is possible to further prevent heat conduction from the brake caliper body to the bicycle frame and the like using a material (e.g., ceramic, stainless steel, etc.) with a lower thermal conductivity than that of the brake caliper body in the intermediate component.

The brake caliper body can have an arrangement recess which is provided on the support surface for arranging the intermediate component. According to this configuration, it is possible to restrict the movement of the intermediate component through the arrangement recess.

The arrangement recess can have a mounting hole for mounting the brake caliper body on the bicycle frame. The intermediate component can have a connecting bore corresponding to the mounting bore. According to this embodiment, it is possible to mount the intermediate component and the brake caliper body on the bicycle frame and the like in the arrangement recess by means of a mounting component that runs through the mounting hole and the connecting hole.

The mounting hole can be designed as a screw hole. According to this configuration, it is possible to mount the caliper body and the intermediate component on the bicycle frame by means of a screw component such as a bolt.

The intermediate component and the arrangement recess can be designed such that the intermediate component is positioned in relation to the arrangement recess. According to this configuration, the intermediate member can be prevented from moving.

The intermediate component is made of a material with a lower thermal conductivity than that of the brake caliper body. According to this embodiment, it is possible to further prevent the conduction of heat from the brake caliper body to the bicycle frame and the like by means of the intermediate component.

The caliper body can be made from an aluminum alloy. According to this configuration, it is possible to make the caliper body light. It is possible to use outside air to cool the caliper body.

The intermediate component can be made of stainless steel. Since the intermediate component is made of stainless steel with a lower thermal conductivity than that of an aluminum alloy, it is possible according to this embodiment to further prevent the conduction of heat from the brake caliper body to the bicycle frame and the like.

The intermediate component can be made of resin. According to this configuration, since the intermediate component is made of resin with a lower thermal conductivity than that of the aluminum alloy, it is possible to further prevent the conduction of heat from the brake caliper body to the bicycle frame and the like. It is also possible to make the intermediate member light by using resin.

The intermediate component has an anti-skid construction. According to this configuration, it is possible to restrict the movement of the intermediate component with respect to the bicycle frame and the like.

According to the present invention, it is possible to prevent the conduction of heat from the brake caliper body.

• 1 eine Seitenansicht des Fahrrad-Scheibenbremssattels gemäß der ersten Ausführungsform der vorliegenden Erfindung ist, wenn der Fahrrad-Scheibenbremssattel am Fahrradrahmen montiert ist;
• 2 eine vergrößerte Seitenansicht des Montageteils des Fahrrad-Bremssattels in 1 ist;
• 3 eine Unteransicht des Fahrrad-Scheibenbremssattels der ersten Ausführungsform ist;
• 4 eine 2 entsprechende Darstellung des Fahrrad-Scheibenbremssattels gemäß der zweiten Ausführungsform der vorliegenden Erfindung ist;
• 5 eine 3 entsprechende Darstellung des Fahrrad-Scheibenbremssattels gemäß der zweiten Ausführungsform der vorliegenden Erfindung ist;
• 6 eine Draufsicht des Zwischenbauteils der zweiten Ausführungsform ist; und
• 7 eine 2 entsprechende Darstellung des Fahrrad-Scheibenbremssattels gemäß einer Modifikation der zweiten Ausführungsform der vorliegenden Erfindung ist.

Embodiments of the invention will now be described with reference to the accompanying drawings, in which:

• 1 Figure 3 is a side view of the bicycle disc brake caliper in accordance with the first embodiment of the present invention when the bicycle disc brake caliper is mounted on the bicycle frame;
• 2 FIG. 8 is an enlarged side view of the mounting part of the bicycle brake caliper in FIG 1 is;
• 3 Figure 3 is a bottom plan view of the bicycle disc brake caliper of the first embodiment;
• 4th a 2 Figure 12 is a corresponding illustration of the bicycle disc brake caliper according to the second embodiment of the present invention;
• 5 a 3 Figure 12 is a corresponding illustration of the bicycle disc brake caliper according to the second embodiment of the present invention;
• 6th Figure 3 is a plan view of the intermediate member of the second embodiment; and
• 7th a 2 Figure 13 is a corresponding illustration of the bicycle disc brake caliper in accordance with a modification of the second embodiment of the present invention.

In the description of each of the following embodiments, the same structural elements have been given the same reference numerals and overlapping descriptions have been omitted. Furthermore, in each drawing, a part of the structural elements has been omitted, where appropriate, for simplicity of description.

In 1 For example, a bicycle disc brake caliper (hereinafter simply described as “brake caliper”) 10 according to the first embodiment of the present invention on a bicycle frame 4th to be assembled. The bike frame 4th is made of a carbon fiber reinforced resin, for example. In 1 and 2 is the caliper 10 mounted on a chain stay 4a of the bike frame 4th In this case the caliper becomes 10 for braking a brake disc mounted on the rear wheel, which is not shown in the figure 6th used.

Furthermore, the brake caliper 10 on the front fork (not shown in the figure), the one on the front end of the bicycle frame 4th is mounted, be mounted. Likewise, in the following descriptions, “front”, “rear”, “left”, “right”, “top”, “bottom” and their synonyms “front”, “back”, “left”, “right”, “top” "And" below "as seen when the cyclist is sitting on the saddle facing the handlebars (none of them shown in the figure).

The bike frame 4th forming chain stay 4a has a first assembly abutment surface 4b and a second assembly pad 4c for mounting the brake caliper 10 on. The first assembly area 4b and the second assembly pad 4c are arranged from front to back with a space therebetween and are superbly formed in rectangular shapes. A first hole 4d opens into the first assembly area 4b , and a second hole 4e opens into the second assembly area 4c . The first hole 4d and the second hole 4e penetrate the chain stay 4a . The first hole 4d and the second hole 4e are for fixing the brake calliper 10 on the chain stay 4a intended.

The caliper 10 is to hold the brake disc 6th between brake pads, which are not shown in the figure, provided for braking the bicycle wheel. The brake pads work with at least one piston 12th that on the caliper 10 is provided. Descriptions are omitted here for the sake of simplicity, since such a configuration is well known.

As in 2 shown, the caliper has 10 at least one piston 12th , a caliper body 14th and a heat conduction suppressing structure 16 on. Likewise, the caliper 10 also an anti-skid construction 18th on (see 3 ). In the first embodiment there are two pistons 12th facing each other, left and right on the caliper 10 intended.

As in 2 shown, the two pistons can 12th each of the brake disc 6th face when the caliper body 14th on the chain stay 4a is mounted. The two pistons 12th are each along a given axis SX of the caliper body 14th movable. In this embodiment, the predetermined axis runs SX in a direction substantially orthogonal to the brake disc 6th is.

The caliper body 14th is made of an aluminum alloy, for example, and holds the pistons 12th movable. The caliper body also has 14th at least one support surface 20th on that is parallel to a plane that is the given axis SX has, runs and the bicycle frame 4th is facing. In this embodiment there are two bearing surfaces 20th provided from front to back with a spacing therebetween that of the first assembly plant surface 4b and the second assembly pad 4c are facing.

As in 3 shown, each of the two bearing surfaces 20th a mounting hole 20a for mounting the caliper body 14th on the bike frame 4th on. The two mounting holes 20a are designed as screw holes arranged in parallel. The mounting holes 20a are on the contact surfaces 20th for direct or indirect mounting of the caliper body 14th on the bike frame 4th intended. The mounting holes 20a are parallel to a plane orthogonal to the given axis SX intended. In this embodiment the mounting holes are 20a as bores with closed ends opposite the bearing surfaces 20th intended. The mounting holes 20a are designed to match the first hole 4d and the second hole 4e stay in contact. A first screw component 22nd for mounting the caliper body 14th on the bike frame 4th is in the front mounting hole 20a screwed in. There is also a second screw component 24 for mounting the caliper body 14th on the bike frame 4th screwed into the rear mounting hole 20b. The first screw component 22nd and the second screw member 24 are for example hexagon socket screws.

The conduction suppression structure 16 is on each of the two contact surfaces 20th intended. The conduction suppression structure 16 has several recesses 26th on that on the support surfaces 20th are provided. The multiple recesses 26th have several first recesses 26a on. The first several recesses 26a viewed from the direction orthogonal to the bearing surfaces 20th , circular. In the first embodiment, the plurality of recesses 26th furthermore at least one non-circular second recess 26b on.

The first several recesses 26a that of the first assembly plant area 4b facing are provided so that the distances L. from the center of the mounting hole 20a to the middle of the several first recesses 26a in the radial direction of the mounting hole 20a are each the same. The several (here four) first recesses 26a that of the second assembly area 4c are facing are provided so that the centers of the plurality of first recesses 26a in the circumferential direction of the mounting hole 20a are equally spaced. In this embodiment, for example, there are four first recesses 26a provided separately every 90 degrees. The first cutouts 26a and the second recess 26b are with one Depth of, for example, approximately 1 mm - 10 mm. Furthermore, the shapes and locations of the plurality of recesses 26th can be arbitrarily set and are not limited to those in this embodiment.

The anti-skid construction 18th , in 3 shown by the hatching is, for example, on the bearing surfaces 20th provided that the first assembly plant surface 4b and the second assembly pad 4c are facing. The anti-skid construction 18th is made by roughening the surface texture of the contact surfaces 20th educated. The surface texture of the bearing surfaces 20th is roughened, for example, by corrugation or rough polishing, whereby the anti-skid construction 18th on the support surfaces 20th is formed. Furthermore, the surface texture of the anti-skid construction 18th and the machining method can be set arbitrarily as long as a predetermined frictional resistance can be achieved. Likewise, the anti-skid construction is not limited to surface treatment. For example, other components such as rubber with a higher frictional resistance on the bearing surfaces than the anti-skid construction can also be provided.

With the brake caliper 10 According to the first embodiment, such a configuration is the heat conduction suppressing structure 16 to reduce the use of the bike frame 4th in contact area on the support surfaces 20th who have favourited the bike frame 4th facing are provided. This allows the heat conduction from the caliper body 14th on the bike frame 4th be suppressed.

Likewise, the movement of the caliper body 14th based on the bicycle frame 4th by means of the anti-skid construction 18th on the support surfaces 20th be suppressed.

In the following descriptions, in the drawings, the same parts as in the first embodiment are given the same reference numerals and their descriptions are omitted; Descriptions of the parts that are the same as those in the first embodiment are given with three-digit reference numerals indicated by adding hundreds to the two-digit reference numerals in the first embodiment.

With the brake caliper 110 according to the second embodiment shown in FIG 4th , has a heat conduction suppressing structure 116 also two intermediate components 130 on. The intermediate components 130 are each between two contact surfaces 120 and a chain stay 4a intended. In particular, the two intermediate components 130 between a first assembly area 4b and a support surface 120 and between a second assembly pad 4c and a support surface 120 intended. Further, in the second embodiment, through the intermediate members 130 Gaps between the support surface 120 and the first assembly area 4b and between a support section and the second mounting abutment surface 4c educated. Therefore there is no anti-skid construction 18th on the support surfaces 120 intended.

As in 5 and 6th shown, the caliper body 114 Mounting holes 120a and arrangement recesses 114a for arranging the respective intermediate components 130 on the two support surfaces 120 on. The arrangement cutouts 114a are, for example, rectangular between the mounting holes 120a and first cutouts 126a educated. The intermediate components 130 and arrangement recesses 114a are designed so that the intermediate components 130 based on the arrangement recesses 114a are positioned.

As in 6th shown are the intermediate components 130 made of a material with a lower thermal conductivity than that of the caliper body 114 manufactured. In the second embodiment, the intermediate components are 130 for example made of stainless steel. The intermediate components 130 are rectangular so that they fit into the arrangement recesses 114a are positioned. The intermediate components 130 have connecting holes 130a on the mounting holes 120a correspond. Furthermore, the shapes of the arrangement recesses 114a and intermediate components 130 can be set arbitrarily and are not limited to a rectangular shape as long as the intermediate members 130 can be positioned.

In the second embodiment, the anti-skid structure is 118 on the intermediate components 130 provided that the first assembly plant surface 4b and the second assembly pad 4c are facing. Thus, the intermediate components 130 an anti-skid construction 118 , represented by the hatching in 6th , on the surfaces 130b that of the first assembly plant area 4b and the second assembly pad 4c are facing on. The anti-skid construction 118 is made by roughening the surface texture of the surfaces 130b just like that in the first embodiment.

There are also several recesses 126 that are attached to the support surfaces 120 are provided, only from circular first recesses 126a , as in 5 shown. Here are the first several recesses 126a that of the first assembly plant area 4b are facing, provided that the distances L. from the center of the mounting hole 120a to the middle of the several first recesses 126a in the radial direction of the mounting hole 120a are each the same. The first several recesses 126a that of the second assembly area 4c are facing are provided so that the centers of the plurality of first recesses 126a in the circumferential direction of the mounting hole 120a are equally spaced.

With a brake caliper 210 according to the modification of the second embodiment shown in FIG 7th , are in addition to the arrangement recesses 114a who have favourited the caliper body 114 provides for additional arrangement cutouts 204f added, which are formed, the intermediate components 230 in the first assembly area 4b and the second assembly pad 4c to position. There is no anti-skid construction in the modification 118 on the intermediate components 230 intended. There are also gaps between the support surfaces 120 and the first assembly area 4b and the second assembly pad 4c educated. When modified, the caliper body 114 on the chain stay 4a via the intermediate components 230 be positioned. The material of the intermediate component 230 is for example stainless steel.

Although the descriptions have been made based on an embodiment of the present invention, this invention is not limited to the above-mentioned embodiments, and various modifications are possible without departing from the gist of the invention. In particular, the multiple embodiments and modifications written down in this description can be combined as required as required.

In the aforementioned embodiments, for example, the brake caliper of this invention can be attached to the front fork (not shown) or the seat stay (not shown) of the bicycle frame 4th of the bicycle, even if cases have been described in which the brake calliper 10 on the bike frame 4th forming chainstay 4a is mounted.

In the above-mentioned embodiments, the mounting hole 20a , 120a be formed as a through hole, even if the mounting hole 20a , 120a is provided with an opening only at one end.

In the second embodiment, the material of the intermediate component 130 , 230 any material with a lower thermal conductivity than that of the caliper body 114 even if stainless steel as an example of the material of the intermediate components 130 and 230 is used. For example, ceramic or resin can be used. Are the intermediate components 130 and 230 made of resin, polyimide resin, polyamide resin, polyacetal resin, fluoroethylene resin, polyacetal resin, phenol resin and the like are preferred. In particular, phenolic resin is more preferred because of its relatively low cost and higher heat resistance.

Even if it is disclosed in the aforementioned embodiments that the brake caliper with the first screw component 22nd and the second screw member 24 is screwed into the caliper body, the present invention is not limited thereto. The present invention is also applicable to a caliper in which at least one screw member is screwed into the frame through the caliper body.

List of reference symbols

4th

Bicycle frame

4a

Chain stay

4b

First assembly area

4c

Second assembly area

4d

First hole

4e

Second hole

6th

Brake disc

10, 110, 210

Bicycle disc brake caliper

12th

piston

14, 114

Caliper body

16, 116

Thermal conduction suppression structure

18, 118

Anti-skid construction

20, 120

Support surface

20a, 120a

Mounting hole

22nd

First screw component

24

Second screw component

26, 126

Recess

26a, 126a

First recess

26b

Second recess

114a

Arrangement recess

130, 230

Intermediate component

130a

Connecting hole

130b

surface

204f

Additional arrangement recess

L.

distance

SX

Predefined axis

Claims (17)

Bicycle disc brake caliper (10, 110, 210) that: at least one piston (12) movable along a predetermined axis (SX); a brake caliper body (14, 114) which has a bearing surface (20, 120) and holds the at least one piston (12), the bearing surface (20, 120) running parallel to a plane having the predetermined axis (SX) and facing the bicycle frame (4); and a heat conduction suppressing structure (16, 116) provided on the support surface (20, 120). Bicycle disc brake caliper (10, 110, 210) according to Claim 1 wherein the heat conduction suppressing structure (16, 116) has a plurality of recesses (26, 126) provided on the support surface (20, 120). Bicycle disc brake caliper (10, 110, 210) according to Claim 2 , wherein the support surface (20, 120) has a mounting hole (20a, 120a) for mounting the brake caliper body (14, 114) on the bicycle frame (4) and the plurality of recesses (26, 126) are provided so that the distances from the center of the mounting hole (20a, 120a) are equal to the centers of the plurality of recesses (26, 126) in the radial direction of the mounting hole (20a, 120a). Bicycle disc brake caliper (10, 110, 210) according to Claim 3 wherein the plurality of recesses (26, 126) are provided such that the centers of the plurality of recesses (26, 126) are equally spaced in the circumferential direction of the mounting hole (20a, 120a). Bicycle disc brake caliper (10, 110, 210) according to Claim 3 or 4th , wherein the mounting hole (20a, 120a) is designed as a screw hole. Bicycle disc brake caliper (10, 110, 210) according to one of the Claims 2 to 4th wherein the plurality of recesses (26, 126) viewed from a direction orthogonal to the support surface (20, 120) are each circular. Bicycle disc brake caliper (10) according to one of the Claims 1 to 4th which further comprises an anti-skid structure (18) which is provided on the support surface (20). Bicycle disc brake caliper (110, 210) according to Claim 1 wherein the heat conduction suppressing structure (116) has an intermediate member (130, 230) provided between the support surface (120) and the bicycle frame (4). Bicycle disc brake caliper (110, 210) according to Claim 8 wherein the brake caliper body (114) has an arrangement recess (114a), which is provided on the support surface (120), for arranging the intermediate component (130, 230). Bicycle disc brake caliper (110, 210) according to Claim 9 wherein the arrangement recess (114a) has a mounting hole (120a) for mounting the brake caliper body (114) on the bicycle frame (4) and the intermediate component (130, 230) has a connecting hole (130a) corresponding to the mounting hole (120a). Bicycle disc brake caliper (110, 210) according to Claim 10 , wherein the mounting hole (120a) is formed as a screw hole. Bicycle disc brake caliper (110, 210) according to one of the Claims 9 to 11 , wherein the intermediate component (130, 230) and the arrangement recess (114a) are formed such that the intermediate component (130, 230) is positioned with respect to the arrangement recess (114a). Bicycle disc brake caliper (110, 210) according to one of the Claims 8 to 11 wherein the intermediate component (130, 230) is made of a material with a lower thermal conductivity than that of the brake caliper body (114). Bicycle disc brake caliper (110, 210) according to Claim 13 wherein the caliper body (114) is made of an aluminum alloy. Bicycle disc brake caliper (110, 210) according to Claim 14 , wherein the intermediate component (130, 230) is made of stainless steel. Bicycle disc brake caliper (110, 210) according to Claim 14 wherein the intermediate member (130, 230) is made of resin. Bicycle disc brake caliper (110) according to one of the Claims 8 to 11 wherein the intermediate component (130) has an anti-skid structure (118).

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