JP2012167724A

JP2012167724A - Vehicular disk brake

Info

Publication number: JP2012167724A
Application number: JP2011028135A
Authority: JP
Inventors: Tadahiro Aida; 忠洋合田; Sho Ota; 祥太田; Naoki Takayanagi; 直樹高柳
Original assignee: Nissin Kogyo Co Ltd
Current assignee: Hitachi Astemo Ltd
Priority date: 2011-02-14
Filing date: 2011-02-14
Publication date: 2012-09-06
Anticipated expiration: 2031-02-14
Also published as: JP5603797B2

Abstract

【課題】反力爪の偏摩耗を防止し、キャリパボディの耐久力を向上させると共に、コストの低減化を図る。
【解決手段】シリンダ孔７を有する作用部５ａと、一対の反力爪５ｉ，５ｉを有し、隣接する反力爪間にシリンダ孔切削用通孔５ｈを有する反作用部５ｂとをディスクロータ２の外周を跨ぐブリッジ部５ｃで連結してキャリパボディ５を形成する。作用部５ａと反作用部５ｂとの間に、ディスクロータ２を挟んで一対の摩擦パッド６，６を配置する。反力爪５ｉ，５ｉのディスクロータ側面５ｋに、反作用部側の摩擦パッド６を押圧する補強プレート１０を着脱可能に装着する。
【選択図】図１An object of the present invention is to prevent uneven wear of a reaction force claw, improve the durability of a caliper body, and reduce the cost.
A disk rotor includes an action portion having a cylinder hole and a reaction portion having a pair of reaction force claws and a cylinder hole cutting hole between adjacent reaction force claws. The caliper body 5 is formed by connecting with a bridge portion 5c straddling the outer periphery of the caliper. A pair of friction pads 6 and 6 are disposed between the action portion 5a and the reaction portion 5b with the disk rotor 2 interposed therebetween. A reinforcing plate 10 that presses the friction pad 6 on the reaction portion side is detachably attached to the disk rotor side surface 5k of the reaction force claws 5i, 5i.
[Selection] Figure 1

Description

本発明は、車両用ディスクブレーキに関し、詳しくは、シリンダ孔を有する作用部と、シリンダ孔切削用通孔の両側に形成される反力爪を有する反作用部とをブリッジ部で連結してキャリパボディを形成したピンスライド型の車両用ディスクブレーキに関する。 The present invention relates to a disk brake for a vehicle, and more specifically, a caliper body in which an action part having a cylinder hole and a reaction part having reaction force claws formed on both sides of a cylinder hole cutting through hole are connected by a bridge part. The present invention relates to a pin slide type disk brake for vehicles.

ピンスライド型の車両用ディスクブレーキでは、シリンダ孔を有する作用部と、シリンダ孔切削用通孔の両側に形成される反力爪を有する反作用部とをブリッジ部で連結してキャリパボディが形成されており、制動時には、昇圧した作動液によりピストンがシリンダ孔を前進し、作用部側の摩擦パッドを、ディスクロータの一側面に押圧すると共に、この反力によって、キャリパボディがスライドピンに案内されながら、作用部方向へ移動し、反力爪が反作用部側の摩擦パッドをディスクロータの他側面へ押圧する（例えば、特許文献１参照。）。 In a pin slide type vehicle disc brake, a caliper body is formed by connecting an action part having a cylinder hole and a reaction part having reaction force claws formed on both sides of a cylinder hole cutting through hole at a bridge part. During braking, the piston moves forward through the cylinder hole by the pressurized hydraulic fluid, and the friction pad on the working side is pressed against one side of the disk rotor, and this reaction force guides the caliper body to the slide pin. While moving in the direction of the action part, the reaction force claw presses the friction pad on the reaction part side against the other side of the disk rotor (for example, see Patent Document 1).

特開２００５−２８２７５８号公報JP 2005-282758 A

しかし、上述のような多くのピンスライド型の車両用ディスクブレーキでは、反力爪はシリンダ孔切削用通孔を挟んで形成されるため、爪のパッド当接面積が小さくなってしまい、ピストンからの推力を小さい面積で受けなければならないと共に、振動の影響も受けることから反力爪が摩耗する虞があり、摩耗が進むと反作用部側の摩擦パッドを適正な状態でディスクロータへ押圧できないことがあった。さらに、反力爪の摩耗が進んだ際には、キャリパボディ全体を交換しなくてはならないことからコストが嵩んでいた。 However, in many pin slide type vehicle disc brakes as described above, the reaction force claw is formed with the cylinder hole cutting through hole interposed therebetween. The thrust of the reaction force must be received in a small area and the reaction force claw may be worn due to the influence of vibration, and if the wear progresses, the friction pad on the reaction part side cannot be pressed to the disc rotor in an appropriate state was there. Further, when the reaction force claws are worn, the entire caliper body must be replaced, which increases costs.

そこで本発明は、ピストンからの推力及び振動を低減できるように、反力爪のパッド当接面積を確保して、反力爪の摩耗を防止し、キャリパボディの耐久力を向上させると共に、コストの低減化を図ることのできる車両用ディスクブレーキを提供することを目的としている。 Accordingly, the present invention secures the pad contact area of the reaction force claw so as to reduce the thrust and vibration from the piston, prevents the reaction force claw from being worn, improves the durability of the caliper body, and reduces the cost. An object of the present invention is to provide a vehicular disc brake capable of reducing the above.

上記目的を達成するため、本発明の車両用ディスクブレーキは、シリンダ孔を有する作用部と、複数の反力爪を有し、隣接する反力爪間にシリンダ孔切削用通孔を有する反作用部とをディスクロータの外周を跨ぐブリッジ部で連結したキャリパボディの前記作用部と反作用部との間に、ディスクロータを挟んで一対の摩擦パッドを配置した車両用ディスクブレーキにおいて、前記反力爪のディスクロータ側面に、反作用部側の摩擦パッドを押圧する補強プレートを装着したことを特徴とし、前記補強プレートは、前記反力爪のディスクロータ側面に着脱可能に装着されると好適である、
また、前記反力爪のディスクロータ側面は、前記補強プレートの反ディスクロータ側に突出形成した嵌入部を嵌め込むための凹部を有し、前記補強プレートは、前記嵌入部を前記凹部に嵌入させた状態で前記反力爪に締結部材にて取り付けられると良好で、さらに、前記補強プレートは、反ディスクロータ側に、前記シリンダ孔切削用通孔の内周に嵌合するリング状の突出部を有していると好適である。また、前記補強プレートは、前記シリンダ孔切削用通孔に対応した位置に、シリンダ孔切削用通孔より小径の係止孔を設けると共に、反作用部側の摩擦パッドの裏板に、前記係止孔の内側を通過可能な大きさの係止部材を反ディスクロータ側に突設し、該係止部材の先端部を前記係止孔に挿通して反作用部側の摩擦パッドの裏板を前記補強プレートのディスクロータ側に当接させた状態で摩擦パッドを前記キャリパボディへの組付け位置に移動させることにより前記係止孔の内周部と前記係止部材の先端部とが係止状態となるものでも良く、さらに、前記シリンダ孔内に内挿されたピストンの先端内周に、リング状の爪部を全周に亘って形成し、前記爪部の内径を前記係止孔と同径に形成すると共に、作用部側の摩擦パッドの裏板に、前記爪部の内側を通過可能な大きさの係止部材をピストン内周壁方向に突設し、該係止部材の先端部を前記爪部の内側に挿通して作用部側の摩擦パッドの裏板を前記爪部のディスクロータ側に当接させた状態で摩擦パッドを前記キャリパボディへの組付け位置に移動させることにより前記爪部と前記係止部材の先端部とが係止状態となるものでも良い。 In order to achieve the above object, a disk brake for a vehicle according to the present invention has an action part having a cylinder hole and a reaction part having a plurality of reaction force claws and a cylinder hole cutting through hole between adjacent reaction force claws. In a vehicle disc brake in which a pair of friction pads is arranged with the disc rotor interposed between the action portion and the reaction portion of the caliper body connected by a bridge portion straddling the outer periphery of the disc rotor, the reaction force claw A reinforcing plate for pressing the friction pad on the reaction part side is mounted on the disk rotor side surface, and the reinforcing plate is preferably mounted detachably on the disk rotor side surface of the reaction force claw.
Further, the disk rotor side surface of the reaction force claw has a concave portion for fitting an insertion portion that protrudes from the reinforcing plate toward the opposite disk rotor side, and the reinforcing plate allows the insertion portion to be inserted into the concave portion. In this state, it is preferable that the reinforcing plate is attached to the reaction force claw with a fastening member. It is preferable to have The reinforcing plate is provided with a locking hole having a diameter smaller than that of the cylinder hole cutting through hole at a position corresponding to the cylinder hole cutting through hole, and the back plate of the friction pad on the reaction part side is provided with the locking plate. A locking member having a size capable of passing through the inside of the hole is provided on the side opposite to the disk rotor, and the tip of the locking member is inserted into the locking hole so that the back plate of the friction pad on the reaction part side is The friction pad is moved to the assembly position to the caliper body while being in contact with the disk rotor side of the reinforcing plate, whereby the inner peripheral portion of the locking hole and the distal end portion of the locking member are locked. Furthermore, a ring-shaped claw portion is formed over the entire inner periphery of the tip of the piston inserted in the cylinder hole, and the inner diameter of the claw portion is the same as that of the locking hole. The nail is formed on the back plate of the friction pad on the working part side. A locking member having a size that can pass through the inside of the piston protrudes toward the inner peripheral wall of the piston, and the front end of the locking member is inserted into the claw portion to attach the back plate of the friction pad on the working portion side. The friction pad may be moved to the assembly position to the caliper body in a state where the claw portion is in contact with the disk rotor side, and the claw portion and the distal end portion of the locking member may be locked. .

本発明の車両用ディスクブレーキによれば、補強プレートが、摩擦パッドの裏板のピストンに対向する部分に当接して、ディスクロータへの押圧力を受け、さらに、パッド当接面積が確保されることから、この押圧力を良好に受けることができ、反力爪が摩耗することがない。また、反力爪のディスクロータ側面に、補強プレートの嵌入部を嵌め込む凹部を形成し、補強プレートは、嵌入部を凹部に嵌め込んだ状態で反作用部に締結部材で固着されることにより、補強プレートをキャリパボディに簡単に装着することができる。さらに、補強プレートが摩耗した際には、補強プレートのみを交換すれば良く、コストの低減化を図ることができる。また、補強プレートの反ディスクロータ側に、シリンダ孔切削用通孔の内周に嵌合するリング状の突出部を設けたことにより、補強プレートを所定位置に確実に固定することができる。 According to the vehicle disc brake of the present invention, the reinforcing plate comes into contact with the portion of the back plate of the friction pad facing the piston, receives the pressing force to the disc rotor, and further secures the pad contact area. Therefore, this pressing force can be satisfactorily received, and the reaction force claw is not worn. Further, a concave portion for fitting the insertion portion of the reinforcing plate is formed on the side surface of the disk rotor of the reaction force claw, and the reinforcing plate is fixed to the reaction portion with a fastening member in a state where the insertion portion is fitted into the concave portion, The reinforcing plate can be easily attached to the caliper body. Furthermore, when the reinforcing plate is worn, it is only necessary to replace the reinforcing plate, and the cost can be reduced. Further, by providing a ring-shaped protrusion that fits to the inner periphery of the cylinder hole cutting through hole on the side opposite to the disk rotor of the reinforcing plate, the reinforcing plate can be securely fixed at a predetermined position.

さらに、補強プレートのシリンダ孔切削用通孔に対応した位置に、シリンダ孔切削用通孔より小径の係止孔を形成し、反作用部側の摩擦パッドの裏板に、前記係止孔の内側を通過可能な大きさの係止部材を反ディスクロータ側に突設し、該係止部材の先端部を係止孔に挿通して反作用部側の摩擦パッドの裏板を補強プレートのディスクロータ側に当接させた状態で摩擦パッドをキャリパボディへの組付け位置に移動させることにより係止孔の内周部と係止部材の先端部とを係止状態とすることにより、組み付けの際に反作用部側の摩擦パッドがディスクロータに対して傾くことがなく、組み付け性の向上を図ることができると共に、制動解除時に反作用部側の摩擦パッドを反力爪と一体的に移動させることができる。 Further, a locking hole having a smaller diameter than the cylinder hole cutting through hole is formed at a position corresponding to the cylinder hole cutting through hole of the reinforcing plate, and the inner side of the locking hole is formed on the back plate of the friction pad on the reaction part side. A locking member of a size that can pass through the disk rotor is provided on the side opposite to the disk rotor, the tip of the locking member is inserted into the locking hole, and the back plate of the friction pad on the reaction side is used as the disk rotor of the reinforcing plate In the state of assembling, the friction pad is moved to the assembly position to the caliper body while being in contact with the side, so that the inner peripheral portion of the locking hole and the tip of the locking member are locked. The friction pad on the reaction part side is not inclined with respect to the disk rotor, so that the assembly can be improved and the friction pad on the reaction part side can be moved integrally with the reaction force claw when the brake is released. it can.

また、シリンダ孔内に内挿されたピストンの先端内周に、リング状の爪部を全周に亘って形成し、前記爪部の内径を前記係止孔と同径に形成すると共に、作用部側の摩擦パッドの裏板に、前記爪部の内側を通過可能な大きさの係止部材をピストン内周壁方向に突設し、該係止部材の先端部を前記爪部の内側に挿通して作用部側の摩擦パッドの裏板を前記爪部のディスクロータ側に当接させた状態で摩擦パッドを前記キャリパボディへの組付け位置に移動させることにより前記爪部と前記係止部材の先端部とを係止状態とすることにより、組み付けの際に作用部側の摩擦パッドがディスクロータに対して傾くことがなく、組み付け性の向上を図ることができると共に、制動解除時に作用部側の摩擦パッドをピストンと一体的に移動させることができる。また、爪部の内径を係止孔と同径に形成したことにより、作用部側の摩擦パッドと反作用部側の摩擦パッドに同一の係止部材を用いることができる。 In addition, a ring-shaped claw portion is formed over the entire circumference on the inner periphery of the tip of the piston inserted into the cylinder hole, and the inner diameter of the claw portion is formed to be the same diameter as the locking hole. On the back plate of the friction pad on the part side, a locking member of a size that can pass through the inside of the claw part is projected in the direction of the inner peripheral wall of the piston, and the tip of the locking member is inserted into the inside of the claw part. Then, the claw portion and the locking member are moved by moving the friction pad to the assembly position on the caliper body in a state where the back plate of the friction pad on the working portion side is in contact with the disc rotor side of the claw portion. By engaging the front end of the disc, the friction pad on the working portion side does not tilt with respect to the disc rotor during assembly, so that the assembly can be improved and the working portion can be released when braking is released. Side friction pad can be moved together with the piston Kill. Further, since the inner diameter of the claw portion is formed to be the same as that of the locking hole, the same locking member can be used for the friction pad on the action portion side and the friction pad on the reaction portion side.

図５のI-I断面図である。It is II sectional drawing of FIG. 図１のII-II断面図である。It is II-II sectional drawing of FIG. 図１のIII-III断面図である。FIG. 3 is a sectional view taken along line III-III in FIG. 1. 本発明の一形態例を示すディスクロータ側から見た反力爪と補強プレートの説明図である。It is explanatory drawing of the reaction force nail | claw and the reinforcement plate which were seen from the disc rotor side which shows one example of this invention. 同じく車両用ディスクブレーキの正面図である。It is a front view of the disk brake for vehicles similarly. 同じく車両用ディスクブレーキの背面図である。FIG. 3 is a rear view of the vehicle disc brake. 同じく摩擦パッドと係止部材と補強プレートの分解斜視図である。It is a disassembled perspective view of a friction pad, a locking member, and a reinforcement plate similarly.

図１乃至図６は本発明の車両用ディスクブレーキの一形態例を示す図で、矢印Ａは車両前進時に前輪と一体に回転するディスクロータの回転方向であり、以下で述べるディスク回出側及びディスク回入側とは車両前進時におけるものとする。 FIGS. 1 to 6 are views showing one embodiment of the disk brake for a vehicle according to the present invention. An arrow A indicates a rotation direction of a disk rotor that rotates integrally with a front wheel when the vehicle moves forward. The disk entry side is when the vehicle is moving forward.

この車両用ディスクブレーキ１は、前進時に車輪と一体に矢印Ａ方向へ回転するディスクロータ２と、該ディスクロータ２の一側部で車体に固設されるキャリパブラケット３と、該キャリパブラケット３に一対のスライドピン４ａ，４ｂを介してディスク軸方向へスライド可能に支持されるピンスライド型のキャリパボディ５と、該キャリパボディ５の作用部５ａと反作用部５ｂの間に、ディスクロータ２を挟んで対向配置される一対の摩擦パッド６，６とを備えている。 The vehicle disc brake 1 includes a disc rotor 2 that rotates in the direction of an arrow A integrally with a wheel when moving forward, a caliper bracket 3 fixed to a vehicle body at one side of the disc rotor 2, and a caliper bracket 3 A disc rotor 2 is sandwiched between a pin slide type caliper body 5 supported so as to be slidable in the disc axial direction via a pair of slide pins 4a and 4b, and an action portion 5a and a reaction portion 5b of the caliper body 5. And a pair of friction pads 6 and 6 which are arranged to face each other.

キャリパブラケット３は、ディスク回出側のディスク外周側に、ディスクロータ２の外側をディスク軸と平行に跨ぐキャリパ支持腕３ａが延設され、該キャリパ支持腕３ａに一方のスライドピン４ａが装着され、また、キャリパブラケット３のディスク回入側で且つディスク内周側に、他方のスライドピン４ｂが装着される。さらに、キャリパブラケット３のディスク回出側で且つディスク内周側には、車体取付孔３ｂ，３ｂが設けられている。また、キャリパ支持腕３ａのディスク半径方向内側には、断面コ字状のトルク受け溝３ｃが形成されている。 The caliper bracket 3 has a caliper support arm 3a extending over the outer side of the disk rotor 2 in parallel with the disk axis on the outer periphery side of the disk on the disk delivery side, and one slide pin 4a is attached to the caliper support arm 3a. The other slide pin 4b is mounted on the caliper bracket 3 on the disk insertion side and on the inner circumferential side of the disk. Further, vehicle body mounting holes 3b and 3b are provided on the disk delivery side and the inner circumferential side of the caliper bracket 3. Further, a torque receiving groove 3c having a U-shaped cross section is formed inside the caliper support arm 3a in the disk radial direction.

キャリパボディ５は、ディスクロータ２の両側部に対向配置される上述の作用部５ａと反作用部５ｂと、ディスクロータ２の外側を跨いでこれらをつなぐブリッジ部５ｃとからなっている。作用部５ａには、シリンダ孔５ｄと一対の車体取り付け腕５ｅ，５ｅと、ユニオン孔５ｆ及びブリーダスクリュ５ｇとが設けられ、シリンダ孔５ｄには、ピストン７がピストンシール８を介して内挿され、ピストン７とシリンダ孔５ｄの底壁との間には、液圧室９が画成されている。ピストン７は、有底円筒状のコップ形に形成され、先端開口面にピストン内周側に突出する爪部７ａが全周に亘ってリング状に形成されている。 The caliper body 5 includes the above-described action part 5 a and reaction part 5 b that are arranged opposite to both sides of the disk rotor 2, and a bridge part 5 c that bridges the outside of the disk rotor 2 and connects them. The action portion 5a is provided with a cylinder hole 5d, a pair of vehicle body attachment arms 5e, 5e, a union hole 5f, and a bleeder screw 5g. A piston 7 is inserted into the cylinder hole 5d via a piston seal 8. A hydraulic chamber 9 is defined between the piston 7 and the bottom wall of the cylinder hole 5d. The piston 7 is formed in a cylindrical shape with a bottomed cylindrical shape, and a claw portion 7a that protrudes toward the inner peripheral side of the piston is formed in a ring shape over the entire circumference on the opening surface of the tip.

反作用部５ｂにはシリンダ孔切削用通孔５ｈの両側に一対の反力爪５ｉ，５ｉが設けられている。さらに、反力爪５ｉ，５ｉのディスクロータ側面５ｋのシリンダ孔切削用通孔５ｈの周囲にはダルマ状の凹部５ｍが形成され、該凹部５ｍに、ディスクロータ側面５ｋよりもディスクロータ側に突出し、反作用部側の摩擦パッド６の裏板６ａに当接する補強プレート１０が着脱可能に取り付けられている。また、反力爪５ｉ，５ｉの反ディスクロータ側面には、シリンダ孔切削用通孔５ｈ側の反力爪先端側とブリッジ部側の３箇所に、ボルト装着用凹部５ｎが形成され、各ボルト装着用凹部５ｎにボルト孔５ｐがそれぞれ穿設されている。 The reaction portion 5b is provided with a pair of reaction force claws 5i, 5i on both sides of the cylinder hole cutting through hole 5h. Further, a dharma-shaped recess 5m is formed around the cylinder hole cutting through hole 5h on the disk rotor side surface 5k of the reaction force claws 5i, 5i, and the recess 5m projects from the disk rotor side surface 5k to the disk rotor side. The reinforcing plate 10 that comes into contact with the back plate 6a of the friction pad 6 on the reaction portion side is detachably attached. Further, on the side of the counter-disk rotor of the reaction force claws 5i, 5i, bolt mounting recesses 5n are formed at three positions on the tip side of the reaction force claw on the cylinder hole cutting through hole 5h side and on the bridge portion side. Bolt holes 5p are formed in the mounting recesses 5n.

補強プレート１０は、摩擦パッド６の裏板６ａに当接する略半円状の当接部１０ａと、該当接部１０ａの反ディスクロータ側に形成され、前記凹部５ｍに嵌め込まれるダルマ状の嵌入部１０ｂと、該嵌入部１０ｂの反ディスクロータ側に形成され、シリンダ孔切削用通孔５ｈの内周に嵌合されるリング状の突出部１０ｃとを備え、双方の反力爪先端側とブリッジ部側の３箇所に、嵌入部１０ｂと当接部１０ａとに亘る雌ねじ孔１０ｄが前記ボルト孔５ｐと同軸に形成され、さらに、当接部１０ａのシリンダ孔切削用通孔５ｈに対応した位置に、シリンダ孔切削用通孔５ｈよりも小径となる係止孔１０ｅが穿設されている。また、係止孔１０ｅの径は、前記ピストン７に形成された爪部７ａの内径と同一に形成されている。 The reinforcing plate 10 has a substantially semicircular contact portion 10a that contacts the back plate 6a of the friction pad 6, and a dharma-shaped insertion portion that is formed on the opposite side of the disk rotor of the corresponding contact portion 10a and is fitted in the recess 5m. 10b and a ring-shaped projecting portion 10c formed on the inner circumference of the cylinder hole cutting through hole 5h, formed on the side opposite to the disk rotor of the fitting portion 10b. A female screw hole 10d extending between the fitting portion 10b and the contact portion 10a is formed coaxially with the bolt hole 5p at three locations on the portion side, and further, a position corresponding to the cylinder hole cutting through hole 5h of the contact portion 10a. Further, a locking hole 10e having a smaller diameter than the cylinder hole cutting through hole 5h is formed. The diameter of the locking hole 10e is the same as the inner diameter of the claw portion 7a formed in the piston 7.

各摩擦パッド６は、金属製の裏板６ａの一側面に、ディスクロータ２の側面と摺接するライニング６ｂを接合して構成され、裏板６ａの上部中央には吊下げ片６ｃが突設され、該吊下げ片６ｃの両側部にハンガーピン１１，１１を挿通するハンガーピン挿通溝６ｄ，６ｄが形成されている。また、裏板６ａのディスク回出側には、前記トルク受け溝３ｃに挿入される耳片６ｅが突設され、さらに、裏板６ａの他側面のディスクロータ周方向中央部に、係止部材１２を取り付けるための雌ねじ孔６ｆが形成されている。各摩擦パッド６は、前記ハンガーピン挿通溝６ｄ，６ｄに、作用部５ａと反作用部５ｂとに形成されたハンガーピン装着孔に架け渡されるハンガーピン１１，１１をそれぞれ挿通し、前記耳片６ｅをリテーナ１３を介して前記トルク受け溝３ｃに挿入することにより、ディスク軸方向に移動可能に吊持される。 Each friction pad 6 is formed by joining a lining 6b slidably in contact with the side surface of the disk rotor 2 to one side surface of a metal back plate 6a, and a hanging piece 6c projects from the upper center of the back plate 6a. Hanger pin insertion grooves 6d and 6d for inserting the hanger pins 11 and 11 are formed on both sides of the hanging piece 6c. Further, an ear piece 6e to be inserted into the torque receiving groove 3c protrudes from the disk delivery side of the back plate 6a, and further, a locking member is provided at the center of the other side of the back plate 6a in the disk rotor circumferential direction. A female screw hole 6f for attaching 12 is formed. Each friction pad 6 is inserted into the hanger pin insertion grooves 6d and 6d through hanger pins 11 and 11 spanned by hanger pin mounting holes formed in the action portion 5a and the reaction portion 5b, respectively. Is inserted into the torque receiving groove 3c through the retainer 13, and is suspended so as to be movable in the disk axial direction.

各係止部材１２は、裏板６ａの前記雌ねじ孔６ｆに螺着される雄ねじ部１２ａを備えた軸部１２ｂと、該軸部１２ｂの反ディスクロータ側先端に形成され、作用部側ではピストン７の爪部７ａに、反作用部側では補強プレート１０の係止孔１０ｅの内周部にそれぞれ係止するフランジ部１２ｃを備えている。軸部１２ｂの長さは、前記爪部７ａ及び前記当接部１０ａの厚さと等しいか、僅かに大きく設定されている。また、フランジ部１２ｃは、爪部７ａや係止孔１０ｅの内側を通過可能なように、爪部７ａや係止孔１０ｅの内径より小径に形成されている。 Each locking member 12 is formed at a shaft portion 12b having a male screw portion 12a screwed into the female screw hole 6f of the back plate 6a, and at the tip of the shaft portion 12b on the side opposite to the disk rotor. 7 claw portions 7 a are provided with flange portions 12 c that are respectively engaged with the inner peripheral portion of the engagement holes 10 e of the reinforcing plate 10 on the reaction portion side. The length of the shaft portion 12b is set to be equal to or slightly larger than the thickness of the claw portion 7a and the contact portion 10a. Further, the flange portion 12c is formed to have a smaller diameter than the inner diameter of the claw portion 7a and the locking hole 10e so that the flange portion 12c can pass inside the claw portion 7a and the locking hole 10e.

上述のように形成された摩擦パッド６，６のキャリパボディ５への組み付けは、まず、反力爪５ｉ，５ｉのディスクロータ側面側から、補強プレート１０の突出部１０ｃをシリンダ孔切削用通孔５ｈの周壁に沿わせながら挿入し、前記凹部５ｍに嵌入部１０ｂを嵌め込み、反力爪５ｉの反ディスクロータ側から各ボルト孔５ｐに取付ボルト１４（本発明の締結部材）をそれぞれ挿入すると共に、前記雌ねじ孔１０ｄに、取付ボルト１４の雄ねじ部１４ａを螺合させることにより、反力爪５ｉ，５ｉに補強プレート１０を取り付ける。次に、作用部側では、摩擦パッド６の裏板６ａに取り付けられた係止部材１２のフランジ部１２ｃを爪部７ａのピストン底部側に配置させてフランジ部１２ｃと爪部７ａとを係止させ、反作用部側では、摩擦パッド６の裏板６ａに取り付けられた係止部材１２のフランジ部１２ｃを係止孔１０ｅの突出部１０ｃ側に配置させてフランジ部１２ｃと係止孔１０ｅの内周部とを係止させ、前記ハンガーピン挿通溝６ｄ，６ｄに前記ハンガーピン１１，１１を挿通して摩擦パッド６，６をキャリパボディ５に吊持する。 Assembling of the friction pads 6 and 6 formed as described above to the caliper body 5 starts with the projecting portion 10c of the reinforcing plate 10 being inserted into the cylinder hole cutting through hole from the side of the disk rotor of the reaction force claws 5i and 5i. While inserting along the peripheral wall of 5h, the fitting portion 10b is fitted into the concave portion 5m, and the mounting bolts 14 (fastening members of the present invention) are inserted into the respective bolt holes 5p from the counter disk rotor side of the reaction force claw 5i. The reinforcing plate 10 is attached to the reaction force claws 5i and 5i by screwing the male screw portion 14a of the mounting bolt 14 into the female screw hole 10d. Next, on the action portion side, the flange portion 12c of the locking member 12 attached to the back plate 6a of the friction pad 6 is disposed on the piston bottom side of the claw portion 7a to lock the flange portion 12c and the claw portion 7a. On the reaction portion side, the flange portion 12c of the locking member 12 attached to the back plate 6a of the friction pad 6 is disposed on the protruding portion 10c side of the locking hole 10e so that the flange portion 12c and the locking hole 10e The peripheral portions are locked, and the hanger pins 11 and 11 are inserted into the hanger pin insertion grooves 6 d and 6 d to suspend the friction pads 6 and 6 on the caliper body 5.

本形態例の車両用ディスクブレーキ１によれば、制動時に、図示しない周知の液圧マスタシリンダで発生した液圧が、ユニオン孔５ｆを介して液圧室９に供給されると、ピストン７がシリンダ孔５ｄをディスクロータ方向へ前進して、作用部側の摩擦パッド６をディスクロータ２の一側面へ押圧する。次に、この反力によって、キャリパボディ５がスライドピン４，４に案内されながら作用部５ａ方向へ移動し、反作用部側の反力爪５ｉ，５ｉが補強プレート１０を介して反作用部側の摩擦パッド６をディスクロータ２の他側面へ押圧する。この時、補強プレート１０の当接部１０ａは、シリンダ孔切削用通孔５ｈの内径方向の一部を覆っていることから、摩擦パッド６の裏板６ａのピストン７に対向する中央部分に当接して、反力爪５ｉ，５ｉで受けるよりも広い面積でピストン７からの押圧力を受けることができ、反力爪５ｉ，５ｉが摩耗することがない。また、補強プレート１０が摩耗した際には、補強プレート１０のみを交換すれば良く、コストの低減化を図ることができる。 According to the vehicle disc brake 1 of this embodiment, when the hydraulic pressure generated in a well-known hydraulic master cylinder (not shown) is supplied to the hydraulic chamber 9 through the union hole 5f during braking, the piston 7 is The cylinder hole 5d is advanced in the direction of the disk rotor, and the friction pad 6 on the action part side is pressed against one side surface of the disk rotor 2. Next, by this reaction force, the caliper body 5 moves in the direction of the action portion 5 a while being guided by the slide pins 4, 4, and the reaction force claws 5 i, 5 i on the reaction portion side are moved to the reaction portion side via the reinforcing plate 10. The friction pad 6 is pressed against the other side of the disk rotor 2. At this time, the abutting portion 10a of the reinforcing plate 10 covers a part of the cylinder hole cutting through hole 5h in the inner diameter direction, so that it contacts the central portion of the friction pad 6 facing the piston 7 of the back plate 6a. In contact therewith, it is possible to receive a pressing force from the piston 7 over a larger area than that received by the reaction force claws 5i, 5i, and the reaction force claws 5i, 5i are not worn. Further, when the reinforcing plate 10 is worn, only the reinforcing plate 10 needs to be replaced, and the cost can be reduced.

さらに、反作用部５ｂのディスクロータ側面５ｋに補強プレート１０を嵌め込む凹部５ｍを形成し、該凹部５ｍに嵌入部１０ｂを嵌着し、取付ボルト１４を螺着することにより、補強プレート１０を反力爪５ｉに簡単に装着することができ、また、取付ボルト１４を取り外すことにより、補強プレート１０を簡単に取り外すことができる。さらに、凹部５ｍと嵌入部１０ｂとをダルマ状に形成すると共に、補強プレート１０に、シリンダ孔切削用通孔５ｈの内周に嵌合する突出部１０ｃを設けたことにより、補強プレート１０をキャリパボディ５に簡単、且つ、確実に装着させることができる。 Further, a recess 5m for fitting the reinforcing plate 10 is formed on the disk rotor side surface 5k of the reaction portion 5b, the fitting portion 10b is fitted into the recess 5m, and the mounting bolts 14 are screwed, whereby the reinforcing plate 10 is anti-reacted. The reinforcing plate 10 can be easily attached to the forceps 5i, and the reinforcing plate 10 can be easily removed by removing the mounting bolts 14. Furthermore, the concave portion 5m and the fitting portion 10b are formed in a dharma shape, and the reinforcing plate 10 is provided with a protruding portion 10c that is fitted to the inner periphery of the cylinder hole cutting through hole 5h. It can be easily and reliably attached to the body 5.

また、摩擦パッド６，６をキャリパボディ５に組み付けた状態では、作用部側の摩擦パッド６は、係止部材１２がピストンに形成した爪部７ａに係止してピストン７に保持され、反作用部側の摩擦パッド６は、係止部材１２が補強プレート１０の係止孔１０ｅの内周部に係止して補強プレート１０に保持されていることから、組み付けの際に、摩擦パッド６，６がディスクロータ２に対して傾くことがなく、ディスクロータ２の付いた車輪を車体に良好に組み付けることができる。また、制動解除時には、ピストン７や反力爪５ｉと共に摩擦パッド６，６をディスクロータ２から引き離すことができることから、摩擦パッド６，６の引き摺りを抑制することができる。また、爪部の内径と係止孔とを同径に形成したことにより、作用部側の摩擦パッドと反作用部側の摩擦パッドに同一の係止部材を用いることができる。 Further, in a state where the friction pads 6 and 6 are assembled to the caliper body 5, the friction pad 6 on the action portion side is held by the piston 7 while being locked to the claw portion 7a formed on the piston by the locking member 12, and reacts. The friction pad 6 on the part side is held by the reinforcing plate 10 while the locking member 12 is locked to the inner peripheral portion of the locking hole 10e of the reinforcing plate 10, so that the friction pad 6, 6 does not tilt with respect to the disc rotor 2, and the wheel with the disc rotor 2 can be assembled to the vehicle body satisfactorily. Further, when braking is released, the friction pads 6 and 6 can be separated from the disc rotor 2 together with the piston 7 and the reaction force claw 5i, so that the drag of the friction pads 6 and 6 can be suppressed. Further, since the inner diameter of the claw portion and the locking hole are formed to have the same diameter, the same locking member can be used for the friction pad on the action portion side and the friction pad on the reaction portion side.

尚、本発明は上述の形態例に限るものではなく、多ポットのピンスライド型ディスクブレーキにも適用することができ、補強プレートは、適宜、反力爪のディスクロータ側面に取り付ければ良い。また、補強プレートは、突出部を備えていなくても良い。また、係止部材や係止孔やピストンの爪部を備えていない物でも良く、さらに、反作用部に設ける凹部や補強プレートに設ける嵌入部を省略することもでき、当接部を直接反力爪のディスクロータ側面に取り付けるようにしても良い。 The present invention is not limited to the above-described embodiment, but can be applied to a multi-pot pin slide type disc brake. The reinforcing plate may be appropriately attached to the side surface of the disc rotor of the reaction force claw. Further, the reinforcing plate may not include the protruding portion. Moreover, the thing which does not have a latching member, a latching hole, or the nail | claw part of a piston may be sufficient, Furthermore, the recessed part provided in a reaction part and the insertion part provided in a reinforcement plate can also be abbreviate | omitted, and a contact part is made direct reaction force. You may make it attach to the disk rotor side surface of a nail | claw.

１…車両用ディスクブレーキ、２…ディスクロータ、３…キャリパブラケット、３ａ…車体取付孔、３ｂ…ピン取付孔、３ｃ…トルク受け溝、４ａ，４ｂ…スライドピン、５…キャリパボディ、５ａ…作用部、５ｂ…反作用部、５ｃ…ブリッジ部、５ｄ…シリンダ孔、５ｅ…車体取り付け腕、５ｆ…ユニオン孔、５ｇ…ブリーダスクリュ、５ｈ…シリンダ孔切削用通孔、５ｉ…反力爪、５ｋ…ディスクロータ側面、５ｍ…凹部、５ｎ…ボルト装着用凹部、５ｐ…ボルト孔、６…摩擦パッド、６ａ…裏板、６ｂ…ライニング、６ｃ…吊下げ片、６ｄ…ハンガーピン挿通溝、６ｅ…耳片、６ｆ…雌ねじ孔、７…ピストン、７ａ…爪部、８…ピストンシール、９…液圧室、１０…補強プレート、１０ａ…当接部、１０ｂ…嵌入部、１０ｃ…突出部、１０ｄ…雌ねじ孔、１０ｅ…係止孔、１１…ハンガーピン、１２…係止部材、１２ａ…雄ねじ部、１２ｂ…軸部、１２ｃ…フランジ部、１３…リテーナ、１４…取付ボルト、１４ａ…雄ねじ部 DESCRIPTION OF SYMBOLS 1 ... Vehicle disc brake, 2 ... Disc rotor, 3 ... Caliper bracket, 3a ... Car body mounting hole, 3b ... Pin mounting hole, 3c ... Torque receiving groove, 4a, 4b ... Slide pin, 5 ... Caliper body, 5a ... Action Part, 5b ... reaction part, 5c ... bridge part, 5d ... cylinder hole, 5e ... body mounting arm, 5f ... union hole, 5g ... bleeder screw, 5h ... cylinder hole cutting through hole, 5i ... reaction force claw, 5k ... Side surface of disk rotor, 5m ... recess, 5n ... recess for bolt mounting, 5p ... bolt hole, 6 ... friction pad, 6a ... back plate, 6b ... lining, 6c ... hanging piece, 6d ... hanger pin insertion groove, 6e ... ear Piece, 6f ... female screw hole, 7 ... piston, 7a ... claw part, 8 ... piston seal, 9 ... hydraulic chamber, 10 ... reinforcing plate, 10a ... contact part, 10b ... fitting part, 10c ... projecting part, 0d ... female screw hole, 10e ... locking hole 11 ... hanger pin 12 ... lock member, 12a ... male screw portion, 12b ... shaft portion, 12c ... flange portion, 13 ... retainer 14 ... mounting bolts, 14a ... male screw portion

Claims

A caliper body in which an action part having a cylinder hole and a reaction part having a plurality of reaction force claws and having a cylinder hole cutting through hole between adjacent reaction force claws are connected by a bridge part straddling the outer periphery of the disk rotor. In the vehicular disc brake in which a pair of friction pads are arranged between the action portion and the reaction portion with a disc rotor interposed therebetween, a reinforcing plate that presses the friction pad on the reaction portion side against the side of the disc rotor of the reaction force claw A disc brake for vehicles, characterized in that is mounted.

2. The vehicle disc brake according to claim 1, wherein the reinforcing plate is detachably attached to a side surface of the disc rotor of the reaction force claw.

The side surface of the disk rotor of the reaction force claw has a concave portion for fitting an insertion portion that protrudes toward the counter disk rotor side of the reinforcing plate, and the reinforcing plate has the insertion portion inserted into the concave portion. The vehicle disc brake according to claim 1, wherein the disc brake is attached to the reaction force claw with a fastening member.

3. The vehicle disk according to claim 1, wherein the reinforcing plate has a ring-shaped protrusion that fits on an inner periphery of the cylinder hole cutting through hole on the side opposite to the disk rotor. 4. brake.

The reinforcing plate is provided with a locking hole having a smaller diameter than the cylinder hole cutting through-hole at a position corresponding to the cylinder hole cutting through-hole, and the back surface of the friction pad on the reaction part side is provided with the locking hole. A locking member having a size that can pass through the inside protrudes from the disk rotor side, and the tip of the locking member is inserted into the locking hole so that the back plate of the friction pad on the reaction portion side is the reinforcing plate. The friction pad is moved to the assembly position to the caliper body in a state where the friction pad is in contact with the disk rotor side, whereby the inner peripheral portion of the locking hole and the distal end portion of the locking member are locked. The vehicle disc brake according to any one of claims 1 to 3, wherein the vehicle disc brake is provided.

A ring-shaped claw portion is formed over the entire inner periphery of the tip of the piston inserted into the cylinder hole, and an inner diameter of the claw portion is formed to be the same diameter as the locking hole. A locking member of a size that can pass through the inside of the claw portion is provided on the back plate of the side friction pad so as to project toward the inner peripheral wall of the piston, and the tip of the locking member is inserted into the inside of the claw portion. The friction pad is moved to the assembly position on the caliper body in a state where the back plate of the friction pad on the working part side is in contact with the disk rotor side of the claw part, thereby the claw part and the locking member are moved. 6. The vehicle disc brake according to claim 5, wherein the tip portion is locked.