JP6818128B2 - Disc brake - Google Patents

Disc brake Download PDF

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JP6818128B2
JP6818128B2 JP2019508629A JP2019508629A JP6818128B2 JP 6818128 B2 JP6818128 B2 JP 6818128B2 JP 2019508629 A JP2019508629 A JP 2019508629A JP 2019508629 A JP2019508629 A JP 2019508629A JP 6818128 B2 JP6818128 B2 JP 6818128B2
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disc
pin
main body
axial direction
mounting member
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JPWO2018179754A1 (en
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義季 岩橋
義季 岩橋
健男 雨宮
健男 雨宮
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Hitachi Astemo Ltd
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Hitachi Automotive Systems Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
    • F16D55/227—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing by two or more pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Description

本発明は、車両の制動を行なうためのディスクブレーキに関する。
本願は、２０１７年３月２７日に、日本に出願された特願２０１７−０６０９７４号に基づき優先権を主張し、その内容をここに援用する。The present invention relates to a disc brake for braking a vehicle.
The present application claims priority based on Japanese Patent Application No. 2017-060974 filed in Japan on March 27, 2017, the contents of which are incorporated herein by reference.

一枚の板材をプレス加工することによって形成されたキャリパブラケットに、摩擦パッドを支持する支持部および摩擦パッドのディスクロータから離れる方向の移動を規制する規制部を設ける技術がある（例えば、特許文献１参照）。 There is a technique in which a caliper bracket formed by pressing a single plate material is provided with a support portion for supporting the friction pad and a regulation portion for restricting the movement of the friction pad in a direction away from the disc rotor (for example, Patent Document). 1).

日本国特開２０１３−１９００３５号公報Japanese Patent Application Laid-Open No. 2013-190035

ディスクブレーキにおいて小型化が求められている。 Disc brakes are required to be miniaturized.

本発明は、小型化が可能なディスクブレーキを提供する。 The present invention provides a disc brake that can be miniaturized.

本発明の一態様に係るディスクブレーキは、車両の非回転部に固定される取付部材と、前記取付部材に支持されて、ディスクの外周側を跨いで配置されるキャリパと、前記キャリパによって前記ディスクの両面に押圧される一対の摩擦パッドと、前記取付部材に設けられ、前記一対の摩擦パッドにおけるディスク周方向の回出側である一端側に配置されて、ディスク軸方向に延びる棒状部材と、を備え、前記一対の摩擦パッドの両方における前記一端側は、前記棒状部材にディスク軸方向に摺動可能に支持される凹部が設けられた支持部を備え、前記取付部材は、前記車両に固定される第１の部位と、前記第１の部位から前記ディスク軸方向にて前記ディスクとは反対側に突出する第２の部位と、前記第２の部位からディスク径方向外側に延びる第３の部位と、を備え、前記棒状部材は、前記第３の部位に設けられ、前記支持部は、前記第１の部位と前記ディスク軸方向にラップする位置に配置されている。 The disc brake according to one aspect of the present invention includes a mounting member fixed to a non-rotating portion of the vehicle, a caliper supported by the mounting member and arranged across the outer peripheral side of the disc, and the disc by the caliper. A pair of friction pads that are pressed on both sides of the disc, and a rod-shaped member that is provided on the mounting member and is arranged on one end side of the pair of friction pads that is a rotation side in the disc circumferential direction and extends in the disc axial direction. The one end side of both of the pair of friction pads is provided with a support portion provided with a recess for slidably supporting the rod-shaped member in the disc axial direction, and the mounting member is fixed to the vehicle. A first portion to be formed, a second portion protruding from the first portion in the disc axial direction to the opposite side of the disc, and a third portion extending outward in the disc radial direction from the second portion. The rod-shaped member is provided at the third portion, and the support portion is arranged at a position where it wraps around the first portion in the disc axial direction.

上記したディスクブレーキによれば、小型化が可能となる。 According to the above-mentioned disc brake, miniaturization is possible.

本発明の実施形態のディスクブレーキを示す平面図である。It is a top view which shows the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキを示す正面図である。It is a front view which shows the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキを示す側面図である。It is a side view which shows the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキを示す側面図である。It is a side view which shows the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキを示す背面図である。It is a rear view which shows the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキを示す側断面図である。It is a side sectional view which shows the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキの取付部材を示す平面図である。It is a top view which shows the mounting member of the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキの取付部材を示す正面図である。It is a front view which shows the mounting member of the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキの取付部材を示す側面図である。It is a side view which shows the mounting member of the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキの取付部材を示す側面図である。It is a side view which shows the mounting member of the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキの取付部材を示す背面図である。It is a rear view which shows the mounting member of the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキの摩擦パッドを示す平面図である。It is a top view which shows the friction pad of the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキの摩擦パッドを示す正面図である。It is a front view which shows the friction pad of the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキの摩擦パッドを示す側面図である。It is a side view which shows the friction pad of the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキの摩擦パッドを示す背面図である。It is a rear view which shows the friction pad of the disc brake of embodiment of this invention. 本発明の実施形態のディスクブレーキの摩擦パッドを示す斜視図である。It is a perspective view which shows the friction pad of the disc brake of embodiment of this invention.

本発明の実施形態のディスクブレーキ１０は、二輪車や四輪車等の車両用、具体的には自動二輪車用のディスクブレーキである。本発明の実施形態のディスクブレーキ１０は、図１〜図６に示すようにディスク１１と、車両の非回転部に固定されてディスク１１の軸方向の一側に配置される取付部材１２と、ディスク１１を跨ぐように取付部材１２に支持されるキャリパ１３とを有している。また、このディスクブレーキ１０は、例えば図３に示すように、一対の摩擦パッド１５，１６と、ブーツ１７，１８とを有している。 The disc brake 10 of the embodiment of the present invention is a disc brake for vehicles such as two-wheeled vehicles and four-wheeled vehicles, specifically, for motorcycles. The disc brake 10 of the embodiment of the present invention includes a disc 11 as shown in FIGS. 1 to 6, a mounting member 12 fixed to a non-rotating portion of the vehicle and arranged on one side of the disc 11 in the axial direction. It has a caliper 13 supported by a mounting member 12 so as to straddle the disc 11. Further, the disc brake 10 has a pair of friction pads 15 and 16 and boots 17 and 18 as shown in FIG. 3, for example.

ディスク１１は、図２，図５に示すように円板状であり、ディスクブレーキ１０の制動対象である車両の図示略の車輪に設けられて車輪と一体に回転する。ここで、ディスク１１の軸方向をディスク軸方向、ディスク１１の径方向をディスク径方向、ディスク１１の周方向をディスク周方向とする。また、車両前進時のディスク１１の回転方向Ｒの入口側をディスク回入側、車両前進時のディスク１１の回転方向Ｒの出口側をディスク回出側とする。 As shown in FIGS. 2 and 5, the disc 11 has a disc shape, is provided on a wheel (not shown) of a vehicle to be braked by the disc brake 10, and rotates integrally with the wheel. Here, the axial direction of the disk 11 is the disk axial direction, the radial direction of the disk 11 is the disk radial direction, and the circumferential direction of the disk 11 is the disk circumferential direction. Further, the inlet side of the rotation direction R of the disc 11 when the vehicle is moving forward is the disc entry side, and the exit side of the rotation direction R of the disc 11 when the vehicle is moving forward is the disc exit side.

取付部材１２は、図７〜図１１に示すように、ブラケット２１と、いずれもブラケット２１とは別体で形成された後にブラケット２１に一体的に固定されるスライドピン２２、両用ピン２３（棒状部材）およびボス部材２４とを有している。 As shown in FIGS. 7 to 11, the mounting member 12 includes a bracket 21, a slide pin 22 which is formed separately from the bracket 21 and then integrally fixed to the bracket 21, and a dual-purpose pin 23 (rod-shaped). It has a member) and a boss member 24.

ブラケット２１は、一定厚さの一枚の金属製の板材からプレス成形により形成される。ブラケット２１は、主体部３１（第１の部位）と、交差部３２（第２の部位）と、延出部３３（第３の部位）との３つの部位を有している。ブラケット２１は、主体部３１と交差部３２と延出部３３との３つの部位のみから構成されている。 The bracket 21 is formed by press molding from a single metal plate having a constant thickness. The bracket 21 has three portions, a main body portion 31 (first portion), an intersection portion 32 (second portion), and an extension portion 33 (third portion). The bracket 21 is composed of only three parts, a main body portion 31, an intersection portion 32, and an extension portion 33.

主体部３１は、全体が一定厚さの平板状である。主体部３１は、図８，図１１に示すように、略円板状の基板部４１と、基板部４１の外周側から基板部４１の径方向に沿って外側に延出する第１延出板部４２と、基板部４１の外周側から基板部４１の径方向に沿って外側に延出する第２延出板部４３とを有している。第１延出板部４２と第２延出板部４３との成す角は鋭角となっている。 The main body 31 is a flat plate having a constant thickness as a whole. As shown in FIGS. 8 and 11, the main body portion 31 has a substantially disk-shaped substrate portion 41 and a first extension extending outward from the outer peripheral side of the substrate portion 41 along the radial direction of the substrate portion 41. It has a plate portion 42 and a second extending plate portion 43 extending outward from the outer peripheral side of the substrate portion 41 along the radial direction of the substrate portion 41. The angle formed by the first extension plate portion 42 and the second extension plate portion 43 is an acute angle.

主体部３１は、基板部４１から離間した位置で第１延出板部４２と第２延出板部４３との先端同士を連結する連結板部４４と、第２延出板部４３と連結板部４４との合流位置から第２延出板部４３の延長方向に延出する延長板部４５と、延長板部４５からその延在方向に直交する方向に若干突出する突出板部４６とを有している。第１延出板部４２と連結板部４４との成す角は鋭角となっている。第２延出板部４３と連結板部４４との成す角も鋭角となっている。突出板部４６は、基板部４１に対する第１延出板部４２の突出する方向と同方向に延長板部４５から突出している。 The main body portion 31 is connected to a connecting plate portion 44 that connects the tips of the first extending plate portion 42 and the second extending plate portion 43 to each other at a position separated from the substrate portion 41, and a second extending plate portion 43. An extension plate portion 45 extending in the extension direction of the second extension plate portion 43 from the confluence position with the plate portion 44, and a protruding plate portion 46 slightly protruding from the extension plate portion 45 in a direction orthogonal to the extension direction. have. The angle formed by the first extending plate portion 42 and the connecting plate portion 44 is an acute angle. The angle formed by the second extending plate portion 43 and the connecting plate portion 44 is also an acute angle. The protruding plate portion 46 projects from the extending plate portion 45 in the same direction as the protruding direction of the first extending plate portion 42 with respect to the substrate portion 41.

基板部４１には、図１１に示すように、その略中央位置に板厚方向に貫通する嵌合穴５１が形成されている。第１延出板部４２には、その基板部４１とは反対側の端部位置に板厚方向に貫通するネジ穴５２が形成されている。延長板部４５には延長板部４５の長さ方向に長い長穴５３が形成されている。 As shown in FIG. 11, the substrate portion 41 is formed with a fitting hole 51 penetrating in the plate thickness direction at a substantially central position thereof. The first extending plate portion 42 is formed with a screw hole 52 penetrating in the plate thickness direction at an end position on the side opposite to the substrate portion 41. The extension plate portion 45 is formed with an elongated hole 53 that is long in the length direction of the extension plate portion 45.

交差部３２は、主体部３１の突出板部４６の延長板部４５とは反対側の端縁部から延出している。交差部３２は、図７，図９，図１０に示すように、主体部３１に対して、その板厚方向における一側に鈍角に曲げられている。交差部３２は、主体部３１と交差するように主体部３１からその板厚方向における一側に突出している。交差部３２は、その主体部３１側の端縁の境界部５５が湾曲して滑らかに主体部３１に繋がっている。図８に示すように、交差部３２の主体部３１側の境界部５５は、延長板部４５および長穴５３に平行な直線状をなしている。交差部３２の境界部５５，５６が、延長板部４５および長穴５３に平行な直線状であるため、これらで両端縁部が構成される交差部３２も、延長板部４５および長穴５３に平行な直線状に延びている。 The intersection 32 extends from an edge portion of the main body 31 that is opposite to the extension plate portion 45 of the protruding plate portion 46. As shown in FIGS. 7, 9, and 10, the intersection 32 is bent at an obtuse angle to one side in the plate thickness direction of the main body 31. The intersection 32 projects from the main body 31 to one side in the plate thickness direction so as to intersect the main body 31. At the intersection 32, the boundary portion 55 of the edge on the main body 31 side is curved and smoothly connected to the main body 31. As shown in FIG. 8, the boundary portion 55 on the main body portion 31 side of the intersection portion 32 has a linear shape parallel to the extension plate portion 45 and the elongated hole 53. Since the boundary portions 55 and 56 of the intersection portion 32 are linear parallel to the extension plate portion 45 and the elongated hole 53, the intersection portion 32 whose both end edges are formed by these is also the extension plate portion 45 and the elongated hole 53. It extends in a straight line parallel to.

図７，図９，図１０に示すように、延出部３３は、全体が一定厚さの平板状であり、交差部３２の主体部３１とは反対側の端縁部から主体部３１と平行をなして主体部３１とは反対方向に延出している。交差部３２は延出部３３から延出部３３の板厚方向における一側に鈍角に曲げられており、延出部３３と交差するように延出部３３からその板厚方向における一側に突出している。交差部３２は、その延出部３３側の端縁の境界部５６が、湾曲して滑らかに延出部３３に繋がっている。交差部３２の延出部３３側の境界部５６は、図８に示すように、交差部３２の主体部３１側の境界部５５と平行になっている。延出部３３は、交差部３２から離れるほど幅が狭くなる先細の形状をなしている。延出部３３には、図１１に示すように、その板厚方向に貫通するネジ穴５８が形成されている。 As shown in FIGS. 7, 9, and 10, the extending portion 33 is a flat plate having a constant thickness as a whole, and the end portion of the intersection 32 opposite to the main portion 31 is connected to the main portion 31. It is parallel and extends in the direction opposite to the main body 31. The intersecting portion 32 is bent at an obtuse angle from the extending portion 33 to one side in the plate thickness direction of the extending portion 33, and from the extending portion 33 to one side in the plate thickness direction so as to intersect the extending portion 33. It is protruding. At the intersection 32, the boundary portion 56 of the edge on the extending portion 33 side is curved and smoothly connected to the extending portion 33. As shown in FIG. 8, the boundary portion 56 on the extension portion 33 side of the intersection portion 32 is parallel to the boundary portion 55 on the main portion 31 side of the intersection portion 32. The extending portion 33 has a tapered shape that becomes narrower as the distance from the intersection 32 increases. As shown in FIG. 11, the extending portion 33 is formed with a screw hole 58 penetrating in the plate thickness direction.

ブラケット２１は、主体部３１と延出部３３とが交差部３２のみを介して繋がっている。平行な主体部３１と延出部３３との間にこれらに交差するように交差部３２が形成されることで、図７，図９，図１０に示すように、段差形状が構成される。よって、延出部３３の板厚方向の主体部３１側には、交差部３２および主体部３１の両方と、主体部３１の板厚方向の位置がラップする空間６０が生じる。この空間６０は、延出部３３の板厚方向に直交する方向については、交差部３２側を除いて外側に抜けており、延出部３３の板厚方向については、延出部３３とは反対側に抜けている。 In the bracket 21, the main body portion 31 and the extension portion 33 are connected to each other only through the intersection 32. By forming the intersecting portion 32 between the parallel main body portion 31 and the extending portion 33 so as to intersect them, a stepped shape is formed as shown in FIGS. 7, 9, and 10. Therefore, on the main body 31 side of the extending portion 33 in the plate thickness direction, a space 60 is created in which both the intersecting portion 32 and the main body 31 and the position of the main body 31 in the plate thickness direction wrap. This space 60 is exited to the outside in the direction orthogonal to the plate thickness direction of the extension portion 33 except for the intersection 32 side, and is different from the extension portion 33 in the plate thickness direction of the extension portion 33. It is missing on the other side.

ボス部材２４は、図６に示すように、大径外径部６１とこれよりも小径の小径外径部６２とを有する段付き円筒状をなしている。ボス部材２４は、ブラケット２１の主体部３１の嵌合穴５１に小径外径部６２において嵌合されて固定されている。ボス部材２４は、図７，図９，図１０に示すように、ブラケット２１に取り付けられた状態で、主体部３１に対し、主体部３１の板厚方向における交差部３２の突出側つまり延出部３３の配置側に大径外径部６１が配置されている。これにより、ボス部材２４は、主体部３１から主体部３１の板厚方向における交差部３２の突出側つまり延出部３３の配置側に突出している。 As shown in FIG. 6, the boss member 24 has a stepped cylindrical shape having a large diameter outer diameter portion 61 and a smaller diameter outer diameter portion 62 having a smaller diameter. The boss member 24 is fitted and fixed in the fitting hole 51 of the main body portion 31 of the bracket 21 in the small diameter outer diameter portion 62. As shown in FIGS. 7, 9, and 10, the boss member 24 is attached to the bracket 21 and is extended to the protruding side of the intersection 32 in the plate thickness direction of the main body 31 with respect to the main body 31. A large-diameter outer diameter portion 61 is arranged on the arrangement side of the portion 33. As a result, the boss member 24 protrudes from the main body 31 toward the protruding side of the intersection 32 in the plate thickness direction of the main body 31, that is, the arrangement side of the extending portion 33.

スライドピン２２は、棒状である。スライドピン２２は、その軸方向の一端側の取付軸部６５と、残りのスライド軸部６６とを有している。スライドピン２２は、図１１に示すように取付軸部６５がブラケット２１の主体部３１のネジ穴５２に螺合されることで主体部３１に固定されている。スライドピン２２は、取付軸部６５においてブラケット２１に取り付けられた状態で、図７，図９，図１０に示すように、スライド軸部６６が、主体部３１から主体部３１の板厚方向における交差部３２の突出側つまり延出部３３の配置側に延出している。スライド軸部６６は、主体部３１に対して垂直に延出している。 The slide pin 22 has a rod shape. The slide pin 22 has a mounting shaft portion 65 on one end side in the axial direction and a remaining slide shaft portion 66. As shown in FIG. 11, the slide pin 22 is fixed to the main body 31 by screwing the mounting shaft 65 into the screw hole 52 of the main body 31 of the bracket 21. With the slide pin 22 attached to the bracket 21 at the attachment shaft portion 65, the slide shaft portion 66 is located in the plate thickness direction from the main body portion 31 to the main body portion 31 as shown in FIGS. 7, 9, and 10. It extends to the protruding side of the intersection 32, that is, to the arrangement side of the extending portion 33. The slide shaft portion 66 extends perpendicularly to the main body portion 31.

両用ピン２３は、棒状である。両用ピン２３は、その軸方向中間の取付軸部７１と、軸方向一側のスライド軸部７２と、軸方向他側のトルク受軸部７３と、を有している。両用ピン２３は、取付軸部７１が、図１１に示すように、ブラケット２１の延出部３３のネジ穴５８に螺合されることで延出部３３に固定されている。両用ピン２３は、取付軸部７１においてブラケット２１に取り付けられた状態で、図７，図９，図１０に示すように、スライド軸部７２が、延出部３３から延出部３３の板厚方向における交差部３２の突出側とは反対側つまり主体部３１の配置側とは反対側に延出している。また、トルク受軸部７３が、延出部３３から延出部３３の板厚方向における交差部３２の突出側つまり主体部３１の配置側に空間６０を通って延出している。延出部３３に設けられた両用ピン２３のスライド軸部７２およびトルク受軸部７３は、延出部３３に対し垂直に延びている。スライドピン２２のスライド軸部６６と両用ピン２３のスライド軸部７２とは同等の外径であり、両用ピン２３のトルク受軸部７３はこれらよりも外径が大径となっている。スライドピン２２および両用ピン２３は、ブラケット２１よりも剛性が高く耐摩耗性に優れる材料から構成されている。 The dual-purpose pin 23 has a rod shape. The dual-purpose pin 23 has a mounting shaft portion 71 in the middle in the axial direction, a slide shaft portion 72 on one side in the axial direction, and a torque receiving shaft portion 73 on the other side in the axial direction. As shown in FIG. 11, the dual-purpose pin 23 is fixed to the extension portion 33 by screwing the mounting shaft portion 71 into the screw hole 58 of the extension portion 33 of the bracket 21. The dual-purpose pin 23 is attached to the bracket 21 on the mounting shaft portion 71, and as shown in FIGS. 7, 9, and 10, the slide shaft portion 72 has a plate thickness from the extending portion 33 to the extending portion 33. It extends to the side opposite to the protruding side of the intersection 32 in the direction, that is, to the side opposite to the arrangement side of the main body 31. Further, the torque receiving shaft portion 73 extends from the extending portion 33 to the protruding side of the intersecting portion 32 in the plate thickness direction of the extending portion 33, that is, to the arrangement side of the main body portion 31 through the space 60. The slide shaft portion 72 and the torque receiving shaft portion 73 of the dual-purpose pin 23 provided in the extending portion 33 extend perpendicularly to the extending portion 33. The slide shaft portion 66 of the slide pin 22 and the slide shaft portion 72 of the dual-purpose pin 23 have the same outer diameter, and the torque receiving shaft portion 73 of the dual-purpose pin 23 has a larger outer diameter than these. The slide pin 22 and the dual-purpose pin 23 are made of a material having higher rigidity and excellent wear resistance than the bracket 21.

取付部材１２は、図１〜図４，図６に示すように、そのブラケット２１が、ディスク軸方向においてディスク１１の一面側であるアウタ側（車輪とは反対側）に配置された状態で、ブラケット２１の主体部３１において車両のディスク１１の近傍の非回転部（例えばフロントフォークのボトムケース）に固定される。その際に、取付部材１２は、図１，図３に示すように、ブラケット２１の主体部３１に対し延出部３３がディスク１１とは反対側（アウタ側）に位置する向きとされ、ボス部材２４の内側に図示略の車軸が配置された状態で、主体部３１の図２，図５に示す長穴５３に挿通される図示略のボルト等の締結部材によって主体部３１が車両の非回転部に固定される。 As shown in FIGS. 1 to 4 and 6, the mounting member 12 has its bracket 21 arranged on the outer side (opposite to the wheel), which is one side of the disc 11 in the disc axial direction. The main body 31 of the bracket 21 is fixed to a non-rotating portion (for example, the bottom case of the front fork) near the disc 11 of the vehicle. At that time, as shown in FIGS. 1 and 3, the mounting member 12 is oriented so that the extending portion 33 is located on the opposite side (outer side) of the disc 11 with respect to the main portion 31 of the bracket 21 and the boss. In a state where the axle (not shown) is arranged inside the member 24, the main body 31 is not a vehicle due to a fastening member such as a bolt (not shown) inserted into the elongated hole 53 shown in FIGS. 2 and 5 of the main body 31. It is fixed to the rotating part.

このように車両の非回転部に取り付けられた取付状態の取付部材１２のブラケット２１は、主体部３１の基板部４１が最もディスク径方向内側に配置される。第１延出板部４２および第２延出板部４３が基板部４１からディスク径方向に沿って外方に延出する。延長板部４５が第２延出板部４３の延長上でディスク径方向の外方にさらに延出する。これにより、長穴５３および交差部３２もディスク径方向に沿って延在する。 In the bracket 21 of the mounting member 12 in the mounted state mounted on the non-rotating portion of the vehicle in this way, the substrate portion 41 of the main body portion 31 is arranged on the innermost side in the disc radial direction. The first extension plate portion 42 and the second extension plate portion 43 extend outward from the substrate portion 41 along the disc radial direction. The extension plate portion 45 further extends outward in the disc radial direction on the extension of the second extension plate portion 43. As a result, the elongated hole 53 and the intersection 32 also extend along the disc radial direction.

また、取付状態の取付部材１２のブラケット２１は、第１延出板部４２よりも第２延出板部４３がディスク回出側に配置され、第２延出板部４３よりも延長板部４５がディスク回出側に配置され、交差部３２が、図５に示すように両用ピン２３のトルク受軸部７３よりもディスク回出側に配置される。 Further, in the bracket 21 of the mounting member 12 in the mounted state, the second extension plate portion 43 is arranged on the disc feeding side of the first extension plate portion 42, and the extension plate portion is located on the disc extension side of the second extension plate portion 43. 45 is arranged on the disc feeding side, and the intersection 32 is arranged on the disc feeding side of the torque receiving shaft portion 73 of the dual-purpose pin 23 as shown in FIG.

また、取付状態の取付部材１２のブラケット２１は、図１，図３に示すように、主体部３１から交差部３２がディスク軸方向にてアウタ側つまりディスク１１とは反対側に突出し、延出部３３が交差部３２の主体部３１とは反対側から図２，図５に示すように、ディスク径方向外側かつディスク回入側に延びる。よって、図１，図３に示すように、主体部３１に対して交差部３２と延出部３３とがディスク軸方向のアウタ側に段差状をなす。言い換えれば、延出部３３は、主体部３１よりもディスク軸方向のアウタ側に配置され、延出部３３の板厚方向の主体部３１側の空間６０は、延出部３３のインナ側つまりディスク１１側に設けられる。 Further, as shown in FIGS. 1 and 3, the bracket 21 of the mounting member 12 in the mounted state extends from the main body 31 so that the intersecting portion 32 projects to the outer side, that is, the side opposite to the disc 11 in the disc axial direction. As shown in FIGS. 2 and 5, the portion 33 extends from the side of the intersection 32 opposite to the main portion 31 to the outside in the disc radial direction and to the disc insertion side. Therefore, as shown in FIGS. 1 and 3, the intersecting portion 32 and the extending portion 33 form a step shape on the outer side in the disc axial direction with respect to the main body portion 31. In other words, the extension portion 33 is arranged on the outer side in the disc axis direction with respect to the main body portion 31, and the space 60 on the main body portion 31 side in the plate thickness direction of the extension portion 33 is the inner side of the extension portion 33, that is, It is provided on the disk 11 side.

取付状態の取付部材１２は、図５に示すように、延出部３３のネジ穴５８が、主体部３１のネジ穴５２よりもディスク径方向外側かつディスク回出側に位置する。その結果、ネジ穴５８に螺合された両用ピン２３は、ネジ穴５２に螺合されたスライドピン２２よりもディスク径方向外側かつディスク回出側に位置する。また、取付状態の取付部材１２は、図６に示すように、スライドピン２２のスライド軸部６６が、ディスク軸方向に延びる姿勢でブラケット２１からディスク１１とは反対側（アウタ側）に延出する。スライドピン２２はキャリパ１３のディスク軸方向に沿う移動を案内する。 In the mounting member 12 in the mounted state, as shown in FIG. 5, the screw hole 58 of the extending portion 33 is located outside the screw hole 52 of the main body portion 31 in the disc radial direction and on the disc feeding side. As a result, the dual-purpose pin 23 screwed into the screw hole 58 is located outside the disc radial direction and on the disc feeding side with respect to the slide pin 22 screwed into the screw hole 52. Further, as shown in FIG. 6, the mounting member 12 in the mounted state extends from the bracket 21 to the side opposite to the disc 11 (outer side) in a posture in which the slide shaft portion 66 of the slide pin 22 extends in the disc axis direction. To do. The slide pin 22 guides the caliper 13 to move along the disc axial direction.

取付状態の取付部材１２は、図１に示すように、両用ピン２３が、ディスク軸方向に延びる姿勢で、スライド軸部７２がブラケット２１からディスク１１とは反対側（アウタ側）に延出し、トルク受軸部７３がブラケット２１からディスク１１側（インナ側）に、延出部３３のディスク１１側に広がる空間６０を通って延出する。取付状態の取付部材１２は、両用ピン２３が、ディスク１１よりもディスク径方向の外側に配置されており、トルク受軸部７３がディスク軸方向にディスク１１を跨いで延出する。両用ピン２３は、スライド軸部７２がキャリパ１３のディスク軸方向に沿う移動を案内し、トルク受軸部７３が摩擦パッド１５，１６の制動トルクを受ける。つまり、両用ピン２３は、スライドピンとトルク受けピンとを兼ねる。 In the mounting member 12 in the mounted state, as shown in FIG. 1, the dual-purpose pin 23 extends in the disc axis direction, and the slide shaft portion 72 extends from the bracket 21 to the side opposite to the disc 11 (outer side). The torque receiving shaft portion 73 extends from the bracket 21 to the disc 11 side (inner side) through the space 60 extending to the disc 11 side of the extending portion 33. In the mounting member 12 in the mounted state, the dual-purpose pin 23 is arranged outside the disc 11 in the disc radial direction, and the torque receiving shaft portion 73 extends across the disc 11 in the disc axial direction. In the dual-purpose pin 23, the slide shaft portion 72 guides the movement of the caliper 13 along the disc axis direction, and the torque receiving shaft portion 73 receives the braking torque of the friction pads 15 and 16. That is, the dual-purpose pin 23 also serves as a slide pin and a torque receiving pin.

キャリパ１３は、図６に示すスライドピン２２と、図１に示す両用ピン２３のスライド軸部７２とによって、ディスク軸方向に移動可能となるように取付部材１２に支持される、いわゆるピンスライド型のキャリパである。キャリパ１３は、図１〜図６に示すキャリパボディ８１と、図１，図４に示すパッドピン８３と、図６に示すピストン８２と、ピストンシール８４と、ダストシール８５とを有している。 The caliper 13 is a so-called pin slide type that is supported by the mounting member 12 so as to be movable in the disc axial direction by the slide pin 22 shown in FIG. 6 and the slide shaft portion 72 of the dual-purpose pin 23 shown in FIG. It is a caliper of. The caliper 13 has a caliper body 81 shown in FIGS. 1 to 6, a pad pin 83 shown in FIGS. 1 and 4, a piston 82 shown in FIG. 6, a piston seal 84, and a dust seal 85.

キャリパボディ８１は、ディスク１１の外周側を跨いだ状態で、取付部材１２の図６に示すスライドピン２２と図１に示す両用ピン２３のスライド軸部７２とによって、ディスク軸方向に移動可能に支持されている。言い換えれば、キャリパボディ８１を含むキャリパ１３は、取付部材１２に支持されてディスク１１の外周側を跨いで配置される。キャリパボディ８１は、例えば図６に示すように、ディスク１１のアウタ側に配置されるシリンダ部９１と、シリンダ部９１のディスク径方向外側からディスク１１の径方向外側を越えるようにインナ側に延出するブリッジ部９２と、ブリッジ部９２のインナ側の端部からシリンダ部９１に対向するようにディスク径方向内側に延出する爪部９３とを有している。 The caliper body 81 can be moved in the disc axial direction by the slide pin 22 shown in FIG. 6 of the mounting member 12 and the slide shaft portion 72 of the dual-purpose pin 23 shown in FIG. 1 while straddling the outer peripheral side of the disc 11. It is supported. In other words, the caliper 13 including the caliper body 81 is supported by the mounting member 12 and is arranged so as to straddle the outer peripheral side of the disc 11. As shown in FIG. 6, for example, the caliper body 81 extends from the cylinder portion 91 arranged on the outer side of the disc 11 and the radial outside of the cylinder portion 91 to the inner side so as to extend beyond the radial outside of the disc 11. It has a protruding bridge portion 92 and a claw portion 93 extending inward in the radial direction of the disc so as to face the cylinder portion 91 from the end portion on the inner side of the bridge portion 92.

図２に示すように、キャリパボディ８１には、シリンダ部９１のディスク回転方向の中間位置からディスク径方向内方かつディスク回入側に斜めに突出するようにして摺動案内部１０１が形成されている。また、ブリッジ部９２とシリンダ部９１との境界付近からディスク回出側に突出するようにして摺動案内部１０２が形成されている。 As shown in FIG. 2, the caliper body 81 is formed with a sliding guide portion 101 so as to project diagonally inward in the disc radial direction and toward the disc turning side from an intermediate position in the disc rotation direction of the cylinder portion 91. ing. Further, the sliding guide portion 102 is formed so as to project from the vicinity of the boundary between the bridge portion 92 and the cylinder portion 91 toward the disc feeding side.

図６に示すように、摺動案内部１０１には、ブーツ保持穴１０５がディスク軸方向に貫通して形成されている。このブーツ保持穴１０５には、有底筒状のブーツ１７が嵌合されている。このブーツ１７にスライドピン２２のスライド軸部６６が嵌合されている。これにより、摺動案内部１０１は、このブーツ１７とともにスライドピン２２に摺動可能に支持されている。 As shown in FIG. 6, a boot holding hole 105 is formed in the sliding guide portion 101 so as to penetrate in the disc axial direction. A bottomed tubular boot 17 is fitted in the boot holding hole 105. The slide shaft portion 66 of the slide pin 22 is fitted to the boot 17. As a result, the sliding guide portion 101 is slidably supported by the slide pin 22 together with the boot 17.

図１に示すように、摺動案内部１０２には、ピン摺接穴１０７がディスク１１側から途中位置までディスク軸方向に沿って形成されている。このピン摺接穴１０７には両用ピン２３のスライド軸部７２が摺動可能に嵌合されている。これにより、摺動案内部１０２は、両用ピン２３のスライド軸部７２に摺動可能に支持されている。 As shown in FIG. 1, a pin sliding contact hole 107 is formed in the sliding guide portion 102 along the disk axial direction from the disk 11 side to an intermediate position. The slide shaft portion 72 of the dual-purpose pin 23 is slidably fitted in the pin sliding contact hole 107. As a result, the sliding guide portion 102 is slidably supported by the slide shaft portion 72 of the dual-purpose pin 23.

図６に示すように、ブーツ１７は、円筒状の中間部分が摺動案内部１０１のブーツ保持穴１０５内に嵌合されている。この部分が摺動案内部１０１と一体にスライドピン２２のスライド軸部６６上を摺動する。ブーツ１７は、開口側がスライドピン２２のブラケット２１側の取付軸部６５に係止されている。ブーツ１７は、スライドピン２２のブラケット２１からディスク１１とは反対側に延出する部分全体を覆っている。ブーツ１７は、ブラケット２１と摺動案内部１０１との間が、キャリパ１３の摺動案内部１０１のスライドピン２２に対する移動時に伸縮するように蛇腹状をなしている。 As shown in FIG. 6, in the boot 17, a cylindrical intermediate portion is fitted in the boot holding hole 105 of the sliding guide portion 101. This portion slides integrally with the slide guide portion 101 on the slide shaft portion 66 of the slide pin 22. The opening side of the boot 17 is locked to the mounting shaft portion 65 on the bracket 21 side of the slide pin 22. The boot 17 covers the entire portion of the slide pin 22 extending from the bracket 21 to the side opposite to the disc 11. The boot 17 has a bellows shape so that the distance between the bracket 21 and the sliding guide portion 101 expands and contracts when the sliding guide portion 101 of the caliper 13 moves with respect to the slide pin 22.

図１に示すように、ブーツ１８は、両用ピン２３のスライド軸部７２のブラケット２１と摺動案内部１０２との間部分を覆う。ブーツ１８は、キャリパ１３の摺動案内部１０２の両用ピン２３のスライド軸部７２に対する移動時に伸縮するように蛇腹状をなしている。ブーツ１８は、一端部がキャリパ１３の摺動案内部１０２に係止され、他端部が両用ピン２３のブラケット２１側の取付軸部７１に係止されている。 As shown in FIG. 1, the boot 18 covers a portion between the bracket 21 of the slide shaft portion 72 of the dual-purpose pin 23 and the sliding guide portion 102. The boot 18 has a bellows shape so as to expand and contract when the dual-purpose pin 23 of the sliding guide portion 102 of the caliper 13 moves with respect to the slide shaft portion 72. One end of the boot 18 is locked to the sliding guide 102 of the caliper 13, and the other end is locked to the mounting shaft 71 on the bracket 21 side of the dual-purpose pin 23.

図６に示すように、シリンダ部９１には、有底のボア１１１が形成されている。ボア１１１は、爪部９３側に向かって開口するようにディスク軸方向に沿って形成されている。ボア１１１は、その円筒状の内周ガイド面１１２がピストン８２の軸方向移動を案内する。ボア１１１には、内周ガイド面１１２よりも径方向外方に凹む円環状のシール溝１１３と、シール溝１１３よりもボア１１１の開口側にあって内周ガイド面１１２よりも径方向外方に凹む円環状のシール溝１１４とを有している。シール溝１１３には円環状のピストンシール８４が配置され、シール溝１１４には円環状のダストシール８５が配置されている。これらピストンシール８４およびダストシール８５は、内側にピストン８２を嵌合させており、ピストン８２とボア１１１との隙間をシールする。 As shown in FIG. 6, a bottomed bore 111 is formed in the cylinder portion 91. The bore 111 is formed along the disc axial direction so as to open toward the claw portion 93 side. The cylindrical inner peripheral guide surface 112 of the bore 111 guides the axial movement of the piston 82. The bore 111 has an annular seal groove 113 that is concave outward in the radial direction from the inner peripheral guide surface 112, and a radial outer side than the inner peripheral guide surface 112 that is on the opening side of the bore 111 from the seal groove 113. It has an annular seal groove 114 that is recessed in. An annular piston seal 84 is arranged in the seal groove 113, and an annular dust seal 85 is arranged in the seal groove 114. The piston seal 84 and the dust seal 85 have a piston 82 fitted inside, and seal the gap between the piston 82 and the bore 111.

図１，図２に示すように、シリンダ部９１のディスク径方向外側かつディスク回入側には、ディスク回入側に突出する突出部１２１が形成されており、図１，図５に示すように爪部９３のディスク回入側にも、ディスク回入側に突出する突出部１２２が形成されている。 As shown in FIGS. 1 and 2, a protruding portion 121 protruding toward the disc turning side is formed on the outside of the cylinder portion 91 in the disc radial direction and on the disc turning side, and as shown in FIGS. 1 and 5. A protruding portion 122 protruding toward the disc turning side is also formed on the disc turning side of the claw portion 93.

図１に示すように、突出部１２１にはディスク軸方向に貫通するネジ穴１２５が形成されている。突出部１２２にはディスク軸方向に貫通する貫通孔１２６が形成されている。パッドピン８３は、突出部１２２の貫通孔１２６に挿入され突出部１２１のネジ穴１２５に螺合されてキャリパボディ８１に取り付けられる。パッドピン８３は、このようにキャリパボディ８１に取り付けられた状態で突出部１２１および突出部１２２を結んでディスク軸方向に延在している。パッドピン８３は、ディスク１１よりもディスク径方向外側、かつ、ブリッジ部９２および爪部９３よりもディスク回入側において、ディスク１１を跨ぐように配置されている。 As shown in FIG. 1, the protruding portion 121 is formed with a screw hole 125 penetrating in the disc axial direction. A through hole 126 that penetrates in the disc axial direction is formed in the protruding portion 122. The pad pin 83 is inserted into the through hole 126 of the protrusion 122, screwed into the screw hole 125 of the protrusion 121, and attached to the caliper body 81. The pad pin 83 connects the protruding portion 121 and the protruding portion 122 in a state of being attached to the caliper body 81 in this way and extends in the disc axial direction. The pad pin 83 is arranged so as to straddle the disc 11 on the outside of the disc 11 in the disc radial direction and on the disc turning side of the bridge portion 92 and the claw portion 93.

図４，図６に示すように、摩擦パッド１５は、ディスク１１の一面とピストン８２およびシリンダ部９１との間に配置されるアウタ側の摩擦パッドである。摩擦パッド１６は、ディスク１１の他面と爪部９３との間に配置されるインナ側の摩擦パッドである。摩擦パッド１５，１６は、同形状の裏板１３１と、裏板１３１に貼付される同形状の摩擦材１３２とから構成されており、裏板１３１に対する摩擦材１３２の貼付面が表裏逆向きになっている。つまり、摩擦パッド１５，１６は、鏡面対称形状をなしている。 As shown in FIGS. 4 and 6, the friction pad 15 is an outer-side friction pad arranged between one surface of the disk 11 and the piston 82 and the cylinder portion 91. The friction pad 16 is an inner friction pad arranged between the other surface of the disc 11 and the claw portion 93. The friction pads 15 and 16 are composed of a back plate 131 having the same shape and a friction material 132 having the same shape attached to the back plate 131, and the surfaces of the friction material 132 attached to the back plate 131 face upside down. It has become. That is, the friction pads 15 and 16 have a mirror-symmetrical shape.

ここでは、図１２〜図１６を参照して、アウタ側の摩擦パッド１５を説明する。裏板１３１は、図１２〜図１６に示すように全体が一定厚さの一枚の板材から形成される。摩擦パッド１５は、図１３に示すように、摩擦材１３２が貼付される主板部１３５と、主板部１３５の長さ方向一側の幅方向一側から長さ方向に沿って外方に延出する腕板部１３６と、主板部１３５の長さ方向他側の幅方向一側から長さ方向に沿って外方に延出する腕板部１３７（支持部）とを有している。腕板部１３６には、裏板１３１の厚さ方向に貫通するピン穴１４１が形成されており、腕板部１３７には主板部１３５とは反対側から主板部１３５側に向かって凹む形状の凹部１４２が裏板１３１の厚さ方向に貫通して形成されている。凹部１４２が形成されることで腕板部１３７の主板部１３５とは反対側の端部は、主板部１３５側の基部１４３と、基部１４３から主板部１３５とは反対方向に突出する一対の突出部１４４，１４５とを有している。腕板部１３６のピン穴１４１は主板部１３５の長さ方向に若干長い角穴である。 Here, the friction pad 15 on the outer side will be described with reference to FIGS. 12 to 16. As shown in FIGS. 12 to 16, the back plate 131 is formed of a single plate material having a constant thickness as a whole. As shown in FIG. 13, the friction pad 15 extends outward along the length direction from the main plate portion 135 to which the friction material 132 is attached and the width direction one side of the main plate portion 135 on one side in the length direction. It has an arm plate portion 136 to be formed, and an arm plate portion 137 (support portion) extending outward along the length direction from one side in the width direction on the other side in the length direction of the main plate portion 135. The arm plate portion 136 is formed with a pin hole 141 penetrating in the thickness direction of the back plate 131, and the arm plate portion 137 is recessed from the side opposite to the main plate portion 135 toward the main plate portion 135 side. The recess 142 is formed so as to penetrate the back plate 131 in the thickness direction. By forming the recess 142, the end portion of the arm plate portion 137 on the side opposite to the main plate portion 135 is a base portion 143 on the main plate portion 135 side and a pair of protrusions protruding from the base portion 143 in the direction opposite to the main plate portion 135. It has portions 144 and 145. The pin hole 141 of the arm plate portion 136 is a square hole slightly longer in the length direction of the main plate portion 135.

図６に示すように、一対の摩擦パッド１５，１６のうちの一方であるアウタ側の摩擦パッド１５は、摩擦材１３２をディスク１１側に、裏板１３１をシリンダ部９１およびピストン８２側に配置した状態とされ、図１に示すように裏板１３１の腕板部１３６をディスク回入側に、腕板部１３７をディスク回出側に配置した状態とされる。この状態で、摩擦パッド１５は、腕板部１３６のピン穴１４１内にキャリパ１３のパッドピン８３を挿通させ、腕板部１３７の凹部１４２に両用ピン２３のトルク受軸部７３を一部入り込ませる。これにより、摩擦パッド１５は、腕板部１３６がパッドピン８３に、腕板部１３７が両用ピン２３のトルク受軸部７３に、それぞれディスク周方向およびディスク径方向の移動がほぼ規制された状態でディスク軸方向に摺動可能に支持される。 As shown in FIG. 6, in the friction pad 15 on the outer side, which is one of the pair of friction pads 15 and 16, the friction material 132 is arranged on the disk 11 side, and the back plate 131 is arranged on the cylinder portion 91 and the piston 82 side. As shown in FIG. 1, the arm plate portion 136 of the back plate 131 is arranged on the disc feeding side, and the arm plate portion 137 is arranged on the disc feeding side. In this state, the friction pad 15 inserts the pad pin 83 of the caliper 13 into the pin hole 141 of the arm plate portion 136, and partially inserts the torque receiving portion 73 of the dual-purpose pin 23 into the recess 142 of the arm plate portion 137. .. As a result, in the friction pad 15, the movement of the arm plate portion 136 to the pad pin 83 and the arm plate portion 137 to the torque receiving shaft portion 73 of the dual-purpose pin 23 is substantially restricted in the disc circumferential direction and the disc radial direction, respectively. It is slidably supported in the disc axial direction.

図６に示すように、インナ側の摩擦パッド１６は、摩擦材１３２をディスク１１側に裏板１３１を爪部９３側に配置した状態とされ、図１に示すように裏板１３１の腕板部１３６をディスク回入側に腕板部１３７をディスク回出側に配置した状態とされる。この状態で、摩擦パッド１６は、腕板部１３６のピン穴１４１にキャリパ１３のパッドピン８３を挿通させ、腕板部１３７の凹部１４２に両用ピン２３のトルク受軸部７３を一部入り込ませる。これにより、摩擦パッド１６は、腕板部１３６がパッドピン８３に、腕板部１３７が両用ピン２３のトルク受軸部７３に、それぞれ、ディスク周方向およびディスク径方向の移動がほぼ規制された状態でディスク軸方向に摺動可能に支持される。トルク受軸部７３を含む棒状部材である両用ピン２３は、取付部材１２に設けられ一対の摩擦パッド１５，１６におけるディスク周方向の一端側（ディスク回出側）に配置されてディスク軸方向に延びている。 As shown in FIG. 6, the friction pad 16 on the inner side is in a state where the friction material 132 is arranged on the disc 11 side and the back plate 131 is arranged on the claw portion 93 side, and as shown in FIG. 1, the arm plate of the back plate 131 It is assumed that the portion 136 is arranged on the disc feeding side and the arm plate portion 137 is arranged on the disc feeding side. In this state, the friction pad 16 has the pad pin 83 of the caliper 13 inserted into the pin hole 141 of the arm plate portion 136, and the torque receiving portion 73 of the dual-purpose pin 23 is partially inserted into the recess 142 of the arm plate portion 137. As a result, in the friction pad 16, the movement of the arm plate portion 136 to the pad pin 83 and the arm plate portion 137 to the torque receiving shaft portion 73 of the dual-purpose pin 23 is substantially restricted in the disc circumferential direction and the disc radial direction, respectively. It is slidably supported in the disc axial direction. The dual-purpose pin 23, which is a rod-shaped member including the torque receiving shaft portion 73, is provided on the mounting member 12 and is arranged on one end side (disc feeding side) of the pair of friction pads 15 and 16 in the disc circumferential direction in the disc axial direction. It is extending.

図５に示すように、アウタ側の摩擦パッド１５は、ディスク１１の中心軸線に直交するディスク径方向において、ブラケットの主体部３１および交差部３２とはラップせずに延出部３３のみとラップするようになっている。言い換えれば、ディスク軸方向から見た場合に、アウタ側の摩擦パッド１５は、ブラケット２１の主体部３１および交差部３２とはラップせずに延出部３３のみとラップする。その際に、アウタ側の摩擦パッド１５は、腕板部１３７が延出部３３とラップする。 As shown in FIG. 5, the friction pad 15 on the outer side does not wrap with the main body portion 31 and the intersection 32 of the bracket in the disc radial direction orthogonal to the central axis of the disc 11, but wraps only with the extension portion 33. It is designed to do. In other words, when viewed from the disc axis direction, the friction pad 15 on the outer side does not wrap with the main body portion 31 and the intersection portion 32 of the bracket 21, but wraps only with the extension portion 33. At that time, the arm plate portion 137 of the friction pad 15 on the outer side wraps with the extension portion 33.

そして、ディスク１１とブラケット２１との間に配置されたアウタ側の摩擦パッド１５は、その腕板部１３７が、主体部３１に対して交差部３２と延出部３３とがディスク軸方向のアウタ側に段差状をなすことにより延出部３３のインナ側に生じる、主体部３１および交差部３２とディスク軸方向の位置が合う空間６０に配置される。これにより、腕板部１３７は、図１に示すように、主体部３１とディスク軸方向の位置がラップ可能であり、少なくとも摩擦材１３２が新品の状態で、主体部３１とディスク軸方向の位置がラップする。つまり、摩擦パッド１５の両用ピン２３に支持される部位である腕板部１３７は、主体部３１とディスク軸方向にラップする位置に配置されている。言い換えれば、腕板部１３７は、ディスク軸方向の位置が主体部３１と重なり合っている。 Then, in the friction pad 15 on the outer side arranged between the disc 11 and the bracket 21, the arm plate portion 137 has an outer portion 32 and the extending portion 33 in the disc axial direction with respect to the main body portion 31. It is arranged in the space 60 where the positions of the main body 31 and the intersection 32 and the disc axis direction are aligned with each other, which is generated on the inner side of the extension 33 by forming a step on the side. As a result, as shown in FIG. 1, the arm plate portion 137 can wrap the position of the main body portion 31 and the disc axial direction, and the position of the main body portion 31 and the disc axial direction is at least in a new state with the friction material 132. Wraps. That is, the arm plate portion 137, which is a portion supported by the dual-purpose pin 23 of the friction pad 15, is arranged at a position where it wraps around the main body portion 31 in the disc axial direction. In other words, the position of the arm plate portion 137 in the disc axial direction overlaps with the main body portion 31.

ここで、キャリパ１３が、取付部材１２のスライドピン２２および両用ピン２３のスライド軸部７２の両方に支持された二カ所支持の状態のまま、取付部材１２およびキャリパ１３から摩擦パッド１５，１６を取り外すことができる。 Here, the friction pads 15 and 16 are removed from the mounting member 12 and the caliper 13 while the caliper 13 is supported in two places supported by both the slide pin 22 of the mounting member 12 and the slide shaft portion 72 of the dual-purpose pin 23. Can be removed.

図１に示すように、取付部材１２のブラケット２１は、全体がディスク１１のアウタ側に配置されているため、インナ側の摩擦パッド１６は、ディスク径方向内側への移動時に取付部材１２に干渉することがない。このため、図５を参照すると、キャリパ１３からパッドピン８３を抜いた後、腕板部１３６側をディスク径方向内側に移動させながら、腕板部１３７を取付部材１２の両用ピン２３のトルク受軸部７３からディスク回入側に離す。これにより、アウタ側の摩擦パッド１５を、二カ所支持の状態のキャリパ１３および取付部材１２から取り外すことができる。 As shown in FIG. 1, since the entire bracket 21 of the mounting member 12 is arranged on the outer side of the disc 11, the friction pad 16 on the inner side interferes with the mounting member 12 when moving inward in the radial direction of the disc. There is nothing to do. Therefore, referring to FIG. 5, after removing the pad pin 83 from the caliper 13, the arm plate portion 137 is moved inward in the disc radial direction while the arm plate portion 137 is moved to the torque receiving shaft of the dual-purpose pin 23 of the mounting member 12. Separate from the unit 73 to the disc insertion side. As a result, the friction pad 15 on the outer side can be removed from the caliper 13 and the mounting member 12 in a state of being supported at two places.

図１に示すように、アウタ側の摩擦パッド１５の腕板部１３７を含む裏板１３１は、そのディスク径方向内側に位置する取付部材１２の主体部３１および交差部３２とディスク軸方向の位置がラップするため、主体部３１および交差部３２によってディスク径方向内側への移動範囲が制限される。図５を参照すると、アウタ側の摩擦パッド１５を外す場合、キャリパ１３からパッドピン８３を抜いた後、腕板部１３６側をディスク径方向内側に移動させながら、腕板部１３７を取付部材１２の両用ピン２３のトルク受軸部７３からディスク回入側に離す。このとき、アウタ側の摩擦パッド１５の裏板１３１は、そのディスク径方向内側に位置する主体部３１および交差部３２とディスク軸方向の位置がラップするため、主体部３１によってディスク径方向内側への移動範囲が制限される。このため、アウタ側の摩擦パッド１５を、主体部３１および交差部３２と干渉しない移動範囲で、腕板部１３７を両用ピン２３からディスク回入側に離せるように、両用ピン２３とキャリパ１３のブリッジ部９２との距離が設定されている。これにより、アウタ側の摩擦パッド１５を、二カ所支持の状態のキャリパ１３および取付部材１２から取り外すことができる。よって、摩擦パッド１５，１６は、キャリパ１３を、取付部材１２のスライドピン２２および両用ピン２３の両方に支持した二カ所支持の状態のまま、キャリパ１３に対して着脱可能となっている。 As shown in FIG. 1, the back plate 131 including the arm plate portion 137 of the friction pad 15 on the outer side is positioned in the disc axial direction with the main body portion 31 and the intersection 32 of the mounting member 12 located inside in the disc radial direction. Is wrapped, so that the main body portion 31 and the intersection portion 32 limit the range of movement inward in the disc radial direction. Referring to FIG. 5, when removing the friction pad 15 on the outer side, after removing the pad pin 83 from the caliper 13, the arm plate portion 137 is attached to the mounting member 12 while moving the arm plate portion 136 side inward in the disc radial direction. The pin 23 is separated from the torque receiving shaft portion 73 on the disc turning side. At this time, the back plate 131 of the friction pad 15 on the outer side wraps the main body portion 31 and the intersection 32 located inside in the disc radial direction and the positions in the disc axial direction, so that the main body portion 31 inward in the disc radial direction. The range of movement of is limited. Therefore, the dual-purpose pin 23 and the caliper 13 so that the friction pad 15 on the outer side can be separated from the dual-purpose pin 23 to the disc insertion side within a movement range that does not interfere with the main body portion 31 and the intersection portion 32. The distance from the bridge portion 92 of the above is set. As a result, the friction pad 15 on the outer side can be removed from the caliper 13 and the mounting member 12 in a state of being supported at two places. Therefore, the friction pads 15 and 16 can be attached to and detached from the caliper 13 while the caliper 13 is supported in two places supported by both the slide pin 22 and the dual-purpose pin 23 of the mounting member 12.

キャリパ１３は、図６に示すシリンダ部９１のボア１１１にブレーキ液が導入されると、ピストン８２がシリンダ部９１に対しディスク軸方向に沿ってディスク１１の方向に前進しアウタ側の摩擦パッド１５をディスク１１に向けて押圧する。すると、摩擦パッド１５が、両用ピン２３のトルク受軸部７３およびパッドピン８３を摺動してディスク１１の一面に摩擦材１３２において当接する。また、これにより生じる反力で、キャリパ１３は、摺動案内部１０１においてブーツ１７とともにスライドピン２２のスライド軸部６６上を摺動しつつ、摺動案内部１０２においてピン摺接穴１０７に嵌合された両用ピン２３のスライド軸部７２上を摺動して、シリンダ部９１をディスク１１から離間させる方向に移動する。すると、爪部９３がインナ側の摩擦パッド１６をディスク１１に向けて押圧する。すると、摩擦パッド１６が、両用ピン２３のトルク受軸部７３およびパッドピン８３を摺動してディスク１１の他面に摩擦材１３２において当接する。このようにして、キャリパ１３は、爪部９３とピストン８２とによって摩擦パッド１５，１６を両側から挟んでディスク１１を押圧することにより、ディスク１１つまり車輪の回転にブレーキをかける。 When the brake fluid is introduced into the bore 111 of the cylinder portion 91 shown in FIG. 6, the caliper 13 advances the piston 82 with respect to the cylinder portion 91 in the direction of the disc 11 along the disc axial direction, and the friction pad 15 on the outer side. Is pressed toward the disc 11. Then, the friction pad 15 slides the torque receiving shaft portion 73 and the pad pin 83 of the dual-purpose pin 23 and comes into contact with one surface of the disc 11 at the friction material 132. Further, due to the reaction force generated by this, the caliper 13 is fitted into the pin sliding contact hole 107 at the sliding guide portion 102 while sliding on the slide shaft portion 66 of the slide pin 22 together with the boot 17 at the sliding guide portion 101. The combined pin 23 slides on the slide shaft portion 72 to move the cylinder portion 91 away from the disk 11. Then, the claw portion 93 presses the friction pad 16 on the inner side toward the disc 11. Then, the friction pad 16 slides the torque receiving shaft portion 73 and the pad pin 83 of the dual-purpose pin 23 and comes into contact with the other surface of the disc 11 at the friction material 132. In this way, the caliper 13 brakes the rotation of the disc 11, that is, the wheel, by sandwiching the friction pads 15 and 16 from both sides by the claw portion 93 and the piston 82 and pressing the disc 11.

以上により、一対の摩擦パッド１５，１６は、ディスク１１の両面側に配置され、取付部材１２のディスク回出側のトルク受軸部７３とキャリパ１３のディスク回入側のパッドピン８３とに摺動可能に支持されて、キャリパ１３によってディスク１１の両面に押圧される。 As described above, the pair of friction pads 15 and 16 are arranged on both sides of the disc 11 and slide on the torque receiving shaft portion 73 on the disc feeding side of the mounting member 12 and the pad pin 83 on the disc feeding side of the caliper 13. Supportable and pressed by the caliper 13 on both sides of the disc 11.

ここで、車両の前進中の制動時に、一対の摩擦パッド１５，１６は、ディスク１１によってディスク回出側に押圧される。このとき、一対の摩擦パッド１５，１６は、基本的に、ピン穴１４１が長穴形状をなしている腕板部１３６がパッドピン８３にディスク回出側に押圧されることはなく、腕板部１３７の凹部１４２の底位置にある基部１４３が両用ピン２３のトルク受軸部７３に当接して両用ピン２３のトルク受軸部７３を押圧する。その際に、一対の摩擦パッド１５，１６から両用ピン２３のトルク受軸部７３には、図５に示すように、ディスク軸方向から見て、トルク受軸部７３の中心を通りディスク１１の回転中心と摩擦材１３２の中心とを結ぶ線に垂直な線上でディスク回出側に向く制動荷重Ｆが生じることになる。ディスク軸方向から見て、主体部３１および延出部３３との間に設けられた交差部３２は、この制動荷重Ｆの方向に対して平行ではなく常に所定の角度αで傾斜するように形成されており、常に角度αが４５°以下となるように形成されている。 Here, the pair of friction pads 15 and 16 are pressed by the disc 11 toward the disc rotation side during braking while the vehicle is moving forward. At this time, in the pair of friction pads 15 and 16, basically, the arm plate portion 136 in which the pin hole 141 has an elongated hole shape is not pressed by the pad pin 83 toward the disc feeding side, and the arm plate portion The base portion 143 at the bottom of the recess 142 of 137 abuts on the torque receiving shaft portion 73 of the dual-purpose pin 23 and presses the torque receiving shaft portion 73 of the dual-purpose pin 23. At that time, as shown in FIG. 5, the torque receiving shaft portion 73 of the pair of friction pads 15 and 16 to the dual-purpose pin 23 passes through the center of the torque receiving shaft portion 73 when viewed from the disc axis direction, and the disc 11 A braking load F facing the disc rotation side is generated on a line perpendicular to the line connecting the center of rotation and the center of the friction material 132. When viewed from the disc axis direction, the intersection 32 provided between the main body 31 and the extension 33 is formed so as not to be parallel to the direction of the braking load F but always to be inclined at a predetermined angle α. It is formed so that the angle α is always 45 ° or less.

上記した特許文献１に記載のディスクブレーキでは、一枚の板材をプレス加工することによって形成されたキャリパブラケットに、アウタ側の摩擦パッドを支持する支持部およびアウタ側の摩擦パッドのディスクロータから離れる方向の移動を規制する規制部を設けている。この構造では、アウタ側の摩擦パッドがキャリパブラケットの支持部に面接触することになり、ディスク軸方向の摺動抵抗が増え、引き摺りトルクが高くなってしまう。また、アウタ側の摩擦パッドの摩耗に対応するためにキャリパブラケットから支持部をディスク軸方向に突出させる必要があり、形状が複雑となってコスト増となってしまう。また、インナ側とアウタ側とで摩擦パッドの裏板を共通化できないため、部品点数増となってしまう。 In the disc brake described in Patent Document 1 described above, the caliper bracket formed by pressing a single plate material is separated from the support portion that supports the friction pad on the outer side and the disc rotor of the friction pad on the outer side. There is a regulatory department that regulates directional movement. In this structure, the friction pad on the outer side comes into surface contact with the support portion of the caliper bracket, the sliding resistance in the disc axial direction increases, and the drag torque increases. Further, in order to cope with the wear of the friction pad on the outer side, it is necessary to project the support portion from the caliper bracket in the disc axial direction, which complicates the shape and increases the cost. In addition, since the back plate of the friction pad cannot be shared between the inner side and the outer side, the number of parts increases.

これに対し、本発明の実施形態のディスクブレーキ１０は、取付部材１２の両用ピン２３でインナ側の摩擦パッド１６に加えてアウタ側の摩擦パッド１５を支持する。これにより、アウタ側の摩擦パッド１５が取付部材１２の両用ピン２３に線接触することになり、ディスク軸方向の摺動抵抗を抑え、引き摺りトルクを抑えることができる。 On the other hand, in the disc brake 10 of the embodiment of the present invention, the friction pad 15 on the outer side is supported in addition to the friction pad 16 on the inner side by the dual-purpose pin 23 of the mounting member 12. As a result, the friction pad 15 on the outer side comes into line contact with the dual-purpose pin 23 of the mounting member 12, and the sliding resistance in the disc axial direction can be suppressed and the drag torque can be suppressed.

また、両用ピン２３でアウタ側の摩擦パッド１５を支持するため、アウタ側の摩擦パッド１５の摩耗に対応するためにブラケット２１をディスク軸方向に突出させる必要がなくなり、ブラケット２１の形状の複雑化を抑えることができる。よって、コスト増を抑制することができる。 Further, since the friction pad 15 on the outer side is supported by the dual-purpose pin 23, it is not necessary to project the bracket 21 in the disc axial direction in order to cope with the wear of the friction pad 15 on the outer side, and the shape of the bracket 21 is complicated. Can be suppressed. Therefore, the cost increase can be suppressed.

また、取付部材１２の両用ピン２３で、アウタ側およびインナ側の両方の摩擦パッド１５，１６を支持する構造であるため、摩擦パッド１５，１６の裏板１３１を表裏反転させて使用できる共通部品にすることができる。よって、部品点数削減によるコスト削減を図ることができる。加えて、ディスクブレーキ１０が車両の左側に配置される場合と右側に配置される場合とについても、摩擦パッド１５，１６の裏板１３１を共通部品にすることができる。 Further, since the dual-purpose pin 23 of the mounting member 12 supports the friction pads 15 and 16 on both the outer side and the inner side, the back plates 131 of the friction pads 15 and 16 can be used by inverting them. Can be. Therefore, it is possible to reduce the cost by reducing the number of parts. In addition, the back plates 131 of the friction pads 15 and 16 can be used as common parts both when the disc brake 10 is arranged on the left side and the right side of the vehicle.

また、取付部材１２を、車両に固定される主体部３１と、主体部３１からディスク軸方向にてディスク１１とは反対側に突出する交差部３２と、交差部３２からディスク径方向外側に延びる延出部３３とを備えるブラケット２１と、両用ピン２３とで構成し、両用ピン２３を、延出部３３に設けている。つまり、間に交差部３２が介在することで主体部３１に対しディスク軸方向にずれた延出部３３に、両用ピン２３を取り付け、アウタ側の摩擦パッド１５の両用ピン２３に支持される腕板部１３７を、主体部３１とディスク軸方向にラップする位置に配置している。これにより、小型化が可能となる。 Further, the mounting member 12 extends outward from the main body 31 fixed to the vehicle, the intersection 32 protruding from the main body 31 in the disc axial direction to the opposite side of the disc 11, and the intersection 32 outward in the disc radial direction. It is composed of a bracket 21 having an extension portion 33 and a dual-purpose pin 23, and the dual-purpose pin 23 is provided in the extension portion 33. That is, the arm is supported by the dual-purpose pin 23 of the friction pad 15 on the outer side by attaching the dual-purpose pin 23 to the extension portion 33 that is displaced in the disc axial direction from the main body portion 31 due to the interposition of the intersection portion 32. The plate portion 137 is arranged at a position where it wraps around the main body portion 31 in the disc axial direction. This enables miniaturization.

また、主体部３１と延出部３３との間に設けられた交差部３２がブラケット２１を補強するリブとなり、ブラケット２１およびこれを含む取付部材１２の剛性を向上させることができる。これにより、ディスクやホイール等を原因とするブレーキ鳴きを低減することができる。 Further, the intersecting portion 32 provided between the main body portion 31 and the extending portion 33 serves as a rib for reinforcing the bracket 21, and the rigidity of the bracket 21 and the mounting member 12 including the bracket 21 can be improved. As a result, brake squeal caused by discs, wheels, and the like can be reduced.

また、交差部３２が、車両の前進制動時に、一対の摩擦パッド１５，１６から両用ピン２３のトルク受軸部７３が受ける制動荷重Ｆの方向に対して平行ではなく常に所定の角度αで傾斜するように形成されているため、ブラケット２１の剛性を向上させることができる。しかも、所定の角度αが４５°以下となるように形成されているため、ブラケット２１の剛性向上効果が高い。 Further, the intersection 32 is not parallel to the direction of the braking load F received from the pair of friction pads 15 and 16 by the torque receiving shaft portion 73 of the dual-purpose pin 23 during forward braking of the vehicle, and is always inclined at a predetermined angle α. Since it is formed so as to be used, the rigidity of the bracket 21 can be improved. Moreover, since the predetermined angle α is formed to be 45 ° or less, the effect of improving the rigidity of the bracket 21 is high.

上記実施形態は、車両の非回転部に固定される取付部材と、上記取付部材に支持されて、ディスクの外周側を跨いで配置されるキャリパと、上記キャリパによって上記ディスクの両面に押圧される一対の摩擦パッドと、上記取付部材に設けられ、上記一対の摩擦パッドにおけるディスク周方向の一端側に配置されて、ディスク軸方向に延びる棒状部材と、を備え、上記一対の摩擦パッドのうちの一方は、上記棒状部材に摺動可能に支持される支持部を備え、上記取付部材は、上記車両に固定される第１の部位と、上記第１の部位から上記ディスク軸方向にて上記ディスクとは反対側に突出する第２の部位と、上記第２の部位からディスク径方向外側に延びる第３の部位と、を備え、上記棒状部材は、上記第３の部位に設けられ、上記支持部は、上記第１の部位と上記ディスク軸方向にラップする位置に配置されている。
この構成により、小型化が可能となる。In the above embodiment, the mounting member fixed to the non-rotating portion of the vehicle, the caliper supported by the mounting member and arranged so as to straddle the outer peripheral side of the disc, and the caliper are pressed against both sides of the disc. Among the pair of friction pads, the pair of friction pads and a rod-shaped member provided on the mounting member, arranged on one end side of the pair of friction pads in the disc circumferential direction and extending in the disc axial direction, are provided. One is provided with a support portion slidably supported by the rod-shaped member, and the mounting member includes a first portion fixed to the vehicle and the disc in the disc axial direction from the first portion. The rod-shaped member is provided at the third portion and has a support, which includes a second portion protruding to the opposite side from the second portion and a third portion extending outward in the radial direction of the disc from the second portion. The unit is arranged at a position where it wraps around the first portion in the disc axial direction.
With this configuration, miniaturization becomes possible.

また、上記実施形態では、上記第２の部位は、上記棒状部材が受ける制動荷重方向に対し所定の角度で傾斜している。
この構成により、取付部材の剛性を向上させることができる。Further, in the above embodiment, the second portion is inclined at a predetermined angle with respect to the braking load direction received by the rod-shaped member.
With this configuration, the rigidity of the mounting member can be improved.

１０ ディスクブレーキ
１１ ディスク
１２ 取付部材
１３ キャリパ
１５，１６ 摩擦パッド
２３ 両用ピン（棒状部材）
３１ 主体部（第１の部位）
３２ 交差部（第２の部位）
３３ 延出部（第３の部位）
１３７ 腕板部（支持部）10 Disc brake 11 Disc 12 Mounting member 13 Caliper 15, 16 Friction pad 23 Dual pin (rod-shaped member)
31 Main part (first part)
32 intersection (second part)
33 Extension (third part)
137 Arm plate (support)

Claims (1)

車両の非回転部に固定される取付部材と、
前記取付部材に支持されて、ディスクの外周側を跨いで配置されるキャリパと、
前記キャリパによって前記ディスクの両面に押圧される一対の摩擦パッドと、
前記取付部材に設けられ、前記一対の摩擦パッドにおけるディスク周方向の回出側である一端側に配置されて、ディスク軸方向に延びる棒状部材と、を備え、
前記一対の摩擦パッドの両方における前記一端側は、前記棒状部材にディスク軸方向に摺動可能に支持される凹部が設けられた支持部を備え、
前記取付部材は、前記車両に固定される第１の部位と、前記第１の部位から前記ディスク軸方向にて前記ディスクとは反対側に突出する第２の部位と、前記第２の部位からディスク径方向外側に延びる第３の部位と、を備え、
前記棒状部材は、前記第３の部位に設けられ、
前記支持部は、前記第１の部位と前記ディスク軸方向にラップする位置に配置されている、ディスクブレーキ。 Mounting members fixed to the non-rotating part of the vehicle,
A caliper that is supported by the mounting member and is arranged so as to straddle the outer peripheral side of the disc.
A pair of friction pads pressed on both sides of the disc by the caliper,
A rod-shaped member provided on the mounting member, arranged on one end side of the pair of friction pads, which is a rotation side in the disc circumferential direction, and extending in the disc axial direction, is provided.
The one end side of both of the pair of friction pads is provided with a support portion provided with a recess that is slidably supported in the disc axial direction in the rod-shaped member.
The mounting member is formed from a first portion fixed to the vehicle, a second portion protruding from the first portion in the disc axial direction to the opposite side of the disc, and the second portion. With a third portion extending outward in the radial direction of the disc,
The rod-shaped member is provided at the third portion.
A disc brake in which the support portion is arranged at a position where it wraps around the first portion in the disc axial direction.
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