JP4425737B2 - Disc brake - Google Patents

Disc brake Download PDF

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JP4425737B2
JP4425737B2 JP2004221795A JP2004221795A JP4425737B2 JP 4425737 B2 JP4425737 B2 JP 4425737B2 JP 2004221795 A JP2004221795 A JP 2004221795A JP 2004221795 A JP2004221795 A JP 2004221795A JP 4425737 B2 JP4425737 B2 JP 4425737B2
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pin
guide hole
axial direction
groove
convex portions
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JP2006038164A (en
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茂 林
隆 佐野
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Hitachi Astemo Ltd
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Hitachi Automotive Systems Ltd
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Description

本発明は、車両に用いて好適なディスクブレーキに関する。   The present invention relates to a disc brake suitable for use in a vehicle.

ディスクブレーキには、パッドを支持するキャリアに、パッドを両側から挾持可能なキャリパを摺動可能に支持する構成のものがある。そして、キャリパをキャリアに摺動自在に支持する摺動案内部として、キャリパに設けられたガイド穴にキャリアに固定されたピンを摺動可能に嵌合させるものや、逆にキャリアに設けられたガイド穴にキャリパに固定されたピンを摺動可能に嵌合させるものがある。   Some disc brakes are configured to slidably support a caliper that can hold the pad from both sides on a carrier that supports the pad. And as a sliding guide part that slidably supports the caliper to the carrier, a pin fixed to the carrier is slidably fitted into a guide hole provided in the caliper, or conversely provided on the carrier There is one in which a pin fixed to a caliper is slidably fitted into a guide hole.

このようなディスクブレーキにおいては、摺動案内部への埃や塵の進入を防ぐために伸縮自在のブーツが設けられることになるが、このブーツの一部をガイド穴とピンとの間に介在させるものがある(例えば特許文献1参照)。このようにブーツをガイド穴とピンとの間に介在させると、例えば制動方向が切り替わったとき等に生じるピンとガイド穴との打音を低減することができる。
特開昭54−35567号公報
In such a disc brake, a telescopic boot is provided to prevent dust and dust from entering the sliding guide part. A part of this boot is interposed between the guide hole and the pin. (See, for example, Patent Document 1). When the boot is interposed between the guide hole and the pin in this way, for example, the hitting sound between the pin and the guide hole that occurs when the braking direction is switched or the like can be reduced.
JP 54-35567 A

上記したブーツのガイド穴とピンとの間の介在部には、内部容積の変化を伴うブーツの伸縮を良好に行わせるために空気通路を形成する必要がある。このため、ブーツの介在部にはピンの軸線方向に直線状に貫通する貫通溝がピン側に形成されている。しかしながら、このようにブーツの介在部のピン側にピンの軸線方向に直線状に貫通して貫通溝を形成すると、ピンからガイド穴に伝わる力の方向がこの貫通溝の方向に向いたときに、軸線方向の全長にわたって貫通溝にピンが入り込んで移動しガイド穴に当たり上記打音を発生させてしまう可能性があった。   It is necessary to form an air passage in the intervening portion between the guide hole and the pin of the boot described above so that the boot can be expanded and contracted with a change in the internal volume. For this reason, a through groove that penetrates linearly in the axial direction of the pin is formed on the pin side in the interposed portion of the boot. However, when the through groove is formed by linearly penetrating in the axial direction of the pin on the pin side of the intervening portion of the boot in this way, when the direction of the force transmitted from the pin to the guide hole is directed toward the through groove There is a possibility that the pin enters the through groove and moves over the entire length in the axial direction and hits the guide hole to generate the hitting sound.

したがって、本発明は、ピンとガイド穴との打音を確実に低減することができるディスクブレーキの提供を目的とする。   Therefore, an object of the present invention is to provide a disc brake capable of reliably reducing the hitting sound between the pin and the guide hole.

上記目的を達成するために、請求項1に係る発明は、一対のパッドと、これら一対のパッドを摺動自在に支持するキャリアと、該キャリアに複数の摺動案内部を介して摺動自在に支持されるとともに、前記一対のパッドを両側から挾持可能なキャリパとを有し、前記摺動案内部が、前記キャリアおよびキャリパのいずれか一方に形成されたガイド穴と、前記キャリアおよびキャリパのいずれか他方に設けられ前記ガイド穴に摺動自在に嵌合されるピンと、これらピンとガイド穴との隙間を覆うブーツとを備えたディスクブレーキにおいて、前記ガイド穴と前記ピンとの間に前記ブーツの介在部を介在させ、該介在部には、前記ピン側の内周部に、前記ガイド穴と前記ピンとの間に介在した状態で前記介在部の軸線方向に開口して貫通する貫通溝が形成され、前記貫通溝は、軸線方向に異なる少なくとも二カ所の位置が互いに円周方向にずれる形状をなしていることを特徴としている。 In order to achieve the above object, the invention according to claim 1 includes a pair of pads, a carrier that slidably supports the pair of pads, and a slidable portion through the plurality of sliding guide portions. And a caliper capable of holding the pair of pads from both sides, wherein the sliding guide portion is formed with a guide hole formed in one of the carrier and the caliper, and between the carrier and the caliper. In a disc brake comprising a pin provided on any one of the pins and slidably fitted into the guide hole, and a boot that covers a gap between the pin and the guide hole, the boot of the boot is interposed between the guide hole and the pin. the intermediate portion is interposed, the said intermediate portion, the inner peripheral portion of the pin side, through an opening in the axial direction of the intermediate portion in a state of being interposed between the guide hole and the pin through There is formed, the through groove is characterized in that differ by at least two places located in the axial direction has a shape deviating in the circumferential direction.

請求項2に係る発明は、請求項1に係る発明において、前記介在部の内周部には、軸線方向に位置がずれ円周方向に一部重なり合う複数の凸部が形成され、これら凸部の間に前記貫通溝が形成されていることを特徴としている。   According to a second aspect of the present invention, in the first aspect of the invention, a plurality of convex portions that are displaced in the axial direction and partially overlap in the circumferential direction are formed on the inner peripheral portion of the interposition portion. The through groove is formed between the two.

請求項3に係る発明は、請求項1に係る発明において、前記介在部の内周部には、軸線方向に対し傾斜する複数の凸部が形成され、これら凸部の間に前記貫通溝が形成されていることを特徴としている。   According to a third aspect of the present invention, in the first aspect of the invention, a plurality of convex portions that are inclined with respect to the axial direction are formed on the inner peripheral portion of the interposition portion, and the through groove is formed between the convex portions. It is characterized by being formed.

請求項1に係る発明によれば、ガイド穴とピンとの間に介在するブーツの介在部の内周部に、ガイド穴とピンとの間に介在した状態で介在部の軸線方向に開口して貫通する貫通溝が形成され、貫通溝は、軸線方向に異なる少なくとも二カ所の位置が互いに円周方向にずれる形状をなしているため、ピンからガイド穴に伝わる力の方向が円周方向におけるいずれの方向となっても、軸線方向の全長にわたって貫通溝にピンが入り込んでしまうことがない。したがって、ピンとガイド穴との打音を確実に低減することができる。 According to the first aspect of the present invention, the inner peripheral portion of the interposed portion of the boot interposed between the guide hole and the pin opens in the axial direction of the interposed portion while being interposed between the guide hole and the pin. Since the through groove has a shape in which at least two positions different in the axial direction are shifted from each other in the circumferential direction, the direction of the force transmitted from the pin to the guide hole is any in the circumferential direction. Even if it becomes a direction, a pin does not enter a penetration groove over the full length of an axial direction. Therefore, it is possible to reliably reduce the hitting sound between the pin and the guide hole.

請求項2に係る発明によれば、介在部の内周部に、軸線方向に位置がずれ円周方向に一部重なり合う複数の凸部を形成することでこれら凸部の間に貫通溝を形成することになるため、凸部を円周方向に延在させても貫通溝を形成できる。よって、ピンの摺動時に介在部に凸部を介して回転方向の力が生じるのを防止することができる。   According to the second aspect of the present invention, a plurality of convex portions that are displaced in the axial direction and partially overlap in the circumferential direction are formed on the inner peripheral portion of the interposition portion, thereby forming a through groove between these convex portions. Therefore, the through groove can be formed even if the convex portion extends in the circumferential direction. Therefore, it is possible to prevent a force in the rotation direction from being generated in the interposition portion via the convex portion when the pin slides.

請求項3に係る発明によれば、介在部の内周部に、軸線方向に対し傾斜する複数の凸部を形成することでこれら凸部の間に貫通溝を形成することになるため、形状が簡単となり、コストを低減することができる。   According to the third aspect of the present invention, since a plurality of convex portions that are inclined with respect to the axial direction are formed on the inner peripheral portion of the interposition portion, a through groove is formed between the convex portions. Can be simplified and the cost can be reduced.

本発明の第1実施形態のディスクブレーキを図1〜図3を参照して以下に説明する。
第1実施形態のディスクブレーキ11は、車両の非回転部に固定される金属製のキャリア12と、このキャリア12にディスク13を挾むよう配設された状態で摺動自在に支持される一対のパッド14,15と、キャリア12とで構成される複数具体的には二カ所の摺動案内部16,16において該キャリア12にディスク13の軸線方向に摺動自在となるよう支持された、パッド14,15を両側から挾持可能なキャリパ17とで主に構成されている。
A disc brake according to a first embodiment of the present invention will be described below with reference to FIGS.
The disc brake 11 according to the first embodiment includes a metal carrier 12 fixed to a non-rotating portion of a vehicle and a pair of slidably supported in a state where the disc 12 is disposed between the carrier 12 and the carrier 13. A plurality of pads 14, 15 and a carrier 12, specifically, two pads, 16, 16 are supported by the carrier 12 so as to be slidable in the axial direction of the disk 13. The caliper 17 is configured mainly with a caliper 17 that can hold the pins 14 and 15 from both sides.

キャリア12は、ガイド穴20がそれぞれ穿設される二カ所のガイド穴形成部21,21を有しており、ガイド穴形成部21,21がキャリア12においてディスク円周方向(図1における上下方向)における両端位置となり、かつ各ガイド穴形成部21に穿設された各ガイド穴20がディスク軸線方向(図1における左右方向)に沿うようにディスク13に対し配置されて車体側に固定される。   The carrier 12 has two guide hole forming portions 21 and 21 in which the guide holes 20 are respectively drilled, and the guide hole forming portions 21 and 21 are in the disk circumferential direction (vertical direction in FIG. 1). ) And the guide holes 20 formed in the respective guide hole forming portions 21 are arranged with respect to the disk 13 along the disk axial direction (left-right direction in FIG. 1) and fixed to the vehicle body side. .

ガイド穴形成部21の内側位置には相互に対向するように一対のパッドガイド23,23が設けられており、これらパッドガイド23,23により、パッド14,15はディスク軸線方向へ摺動自在となるようにそれぞれの両端位置において支持されることになる。   A pair of pad guides 23, 23 are provided inside the guide hole forming portion 21 so as to face each other, and the pads 14, 15 can be slid in the disk axial direction by the pad guides 23, 23. It will be supported at each end position.

キャリパ17は、シリンダ部24と、シリンダ部24の一側から延出するディスクパス部25と、ディスクパス部25のシリンダ部24に対し反対側からシリンダ部24に対向するよう延出する爪部26とを有しており、シリンダ部24の両側には相反方向に延出するように延出部27,27がそれぞれ形成されている。   The caliper 17 includes a cylinder part 24, a disk path part 25 extending from one side of the cylinder part 24, and a claw part extending from the opposite side to the cylinder part 24 of the disk path part 25 so as to face the cylinder part 24. 26, and extending portions 27 are formed on both sides of the cylinder portion 24 so as to extend in opposite directions.

そして、シリンダ部24には、その爪部26側に開口するよう図示せぬボアが形成されており、該ボアには、図示せぬピストンが摺動自在に嵌合されている。   A bore (not shown) is formed in the cylinder portion 24 so as to open to the claw portion 26 side, and a piston (not shown) is slidably fitted into the bore.

キャリパ17の両延出部27,27には、それぞれ、ボアの軸線方向(図1における左右方向)に沿って貫通する取付穴30が形成されている。そして、各延出部27には、それぞれ、爪部26の方向に延出するようにピン31,31が取付穴30に嵌入されるボルト32,32により固定されている。   Each of the extended portions 27 of the caliper 17 is formed with a mounting hole 30 penetrating along the axial direction of the bore (left-right direction in FIG. 1). And in each extension part 27, the pins 31 and 31 are being fixed by the volt | bolts 32 and 32 inserted in the attachment hole 30, respectively so that it may extend in the direction of the nail | claw part 26, respectively.

そして、これらのピン31がキャリア12の各ガイド穴20に摺動可能に嵌合されることで、キャリパ17はキャリア12に摺動可能に支持されることになる。   The pins 31 are slidably fitted into the guide holes 20 of the carrier 12 so that the caliper 17 is slidably supported by the carrier 12.

このようにキャリア12に支持された状態で、キャリパ17は、シリンダ部24のボアに嵌合された図示せぬピストンをディスク軸線方向に沿わせた状態でパッド15のディスク13に反対側に対向配置させることになり、ディスクパス部25をシリンダ部24の一側からディスク13の外周部を跨ぐよう延出させることになって、爪部26をディスクパス部25のシリンダ部24に対し反対側からパッド14のディスク13に対し反対側に対向配置させる。   In this state supported by the carrier 12, the caliper 17 faces the disk 13 of the pad 15 on the opposite side in a state where a piston (not shown) fitted in the bore of the cylinder portion 24 is aligned along the disk axial direction. The disc path portion 25 is extended from one side of the cylinder portion 24 so as to straddle the outer peripheral portion of the disc 13, and the claw portion 26 is opposite to the cylinder portion 24 of the disc path portion 25. To the opposite side of the pad 14 with respect to the disk 13.

これにより、図示せぬピストンがブレーキ液圧で爪部26の方向に突出すると、ピストンと爪部26とでパッド14,15をディスク13に対し両反対側から挾持し、これらパッド14,15をディスク13に接触させる。それとともにパッド14,15のディスク13への接触による反力でキャリパ17は両ピン31をそれぞれ対応するガイド穴20内で摺動させつつキャリア12に対し、パッド14,15をディスク13に適正に接触させる位置に移動する。   As a result, when a piston (not shown) protrudes in the direction of the claw portion 26 with the brake fluid pressure, the piston 14 and the claw portion 26 hold the pads 14 and 15 with respect to the disk 13 from both opposite sides. Contact the disk 13. At the same time, the caliper 17 causes the pads 14 and 15 to be properly placed on the disk 13 with respect to the carrier 12 while the caliper 17 slides both pins 31 in the corresponding guide holes 20 by the reaction force caused by the contact of the pads 14 and 15 with the disk 13. Move to the contact position.

両摺動案内部16は、それぞれ、ピン31とガイド穴20との隙間を覆うブーツ35,35を備えている。図2に示すように、ピン31の基端側(延出部27側)の外周面にはブーツ35の一端側を嵌合させるための環状の嵌合溝37が形成されている。また、ガイド穴形成部21のガイド穴20の開口側には、ガイド穴20のピン31が嵌合される主ガイド穴部39よりも大径の嵌合穴部40が形成されている。嵌合穴部40の主ガイド穴部39側の内周面には、嵌合穴部40よりも大径の環状の係止溝41が形成されている。   Both sliding guide portions 16 include boots 35 and 35 that cover the gap between the pin 31 and the guide hole 20, respectively. As shown in FIG. 2, an annular fitting groove 37 for fitting one end side of the boot 35 is formed on the outer peripheral surface of the base end side (extension portion 27 side) of the pin 31. A fitting hole 40 having a diameter larger than that of the main guide hole 39 into which the pin 31 of the guide hole 20 is fitted is formed on the opening side of the guide hole 20 of the guide hole forming part 21. An annular locking groove 41 having a larger diameter than the fitting hole 40 is formed on the inner peripheral surface of the fitting hole 40 on the main guide hole 39 side.

ブーツ35は、変形容易なゴム等の弾性材料からなるもので、図3に示すように、中間部分が薄肉蛇腹状の中間蛇腹部44とされており、一端開口側には中間蛇腹部44よりも半径方向内方に突出するように肉厚が厚くなる環状の嵌合部45が形成されている。また、他端開口側には中間蛇腹部44よりも半径方向外方に突出するように肉厚が厚くなる環状の嵌合部(介在部)46が形成されている。加えて、この嵌合部46の軸線方向の一側には半径方向外方に突出する環状の係止部47が形成され、軸線方向の他側にも半径方向外方に突出する環状の係止部48が形成されている。   The boot 35 is made of an elastic material such as rubber that can be easily deformed. As shown in FIG. 3, the intermediate portion has a thin bellows-like intermediate bellows portion 44, and the one end opening side has an intermediate bellows portion 44. Also, an annular fitting portion 45 is formed so that the wall thickness increases so as to protrude inward in the radial direction. In addition, an annular fitting portion (intervening portion) 46 is formed on the other end opening side so as to be thicker than the intermediate bellows portion 44 so as to protrude outward in the radial direction. In addition, an annular locking portion 47 that protrudes radially outward is formed on one side of the fitting portion 46 in the axial direction, and an annular engagement portion that protrudes radially outward also on the other side of the axial direction. A stop 48 is formed.

このようなブーツ35は、図2に示すように、ピン31を内側に挿入させた状態で一端側の嵌合部45をピン31の嵌合溝37に嵌合させるとともに、他端側の嵌合部46をガイド穴形成部21のガイド穴20の嵌合穴部40に嵌合させることで、ピン31およびガイド穴形成部21に取り付けられる。このとき、嵌合部46の一側の係止部47は係止溝41に嵌合され、他側の係止部48はガイド穴形成部21の嵌合穴部40側の端面に係止される。この状態でブーツ35の嵌合部46がガイド穴20とピン31との間に介在することになる。   As shown in FIG. 2, such a boot 35 has the fitting portion 45 on one end side fitted in the fitting groove 37 of the pin 31 with the pin 31 inserted inside, and the fitting on the other end side. By fitting the joint portion 46 into the fitting hole portion 40 of the guide hole 20 of the guide hole forming portion 21, it is attached to the pin 31 and the guide hole forming portion 21. At this time, the locking portion 47 on one side of the fitting portion 46 is fitted into the locking groove 41, and the locking portion 48 on the other side is locked to the end surface of the guide hole forming portion 21 on the fitting hole portion 40 side. Is done. In this state, the fitting portion 46 of the boot 35 is interposed between the guide hole 20 and the pin 31.

そして、本実施形態において、嵌合部46のピン31側の内周部には、図3に示すように複数の凸部51が形成されている。各凸部51は、それぞれ、嵌合部46の円周方向に長い形状をなしており、突出する先端面52が嵌合部46と同軸の円弧状をなしていて、各先端面52でピン31の外周面に密着する。すべての先端面52は同一の円筒面に含まれることになり、この円筒面の径は、ピン31の外径およびこれより大径のガイド穴20の主ガイド穴部39の内径よりも小径となっている。   And in this embodiment, the some convex part 51 is formed in the inner peripheral part by the side of the pin 31 of the fitting part 46, as shown in FIG. Each convex portion 51 has a long shape in the circumferential direction of the fitting portion 46, and the protruding tip surface 52 has an arc shape coaxial with the fitting portion 46. It adheres to the outer peripheral surface of 31. All the tip surfaces 52 are included in the same cylindrical surface, and the diameter of the cylindrical surface is smaller than the outer diameter of the pin 31 and the inner diameter of the main guide hole portion 39 of the guide hole 20 having a larger diameter than this. It has become.

このような凸部51が複数、嵌合部46の軸線方向に位置を合わせて列をなし、このような列が、嵌合部46の軸線方向に位置をずらして複数列、具体的には三列形成されている。   A plurality of such convex portions 51 are aligned in the axial direction of the fitting portion 46 to form a row, and such a row is shifted in the axial direction of the fitting portion 46 to be a plurality of rows, specifically, Three rows are formed.

軸線方向に同じ列を構成する複数の凸部51は、嵌合部46の円周方向に等間隔で並べられており、その結果、軸線方向に同じ列を構成する複数の凸部51の隣り合うもの同士の間には嵌合部51の軸線方向に沿う溝部54が形成されている。また、凸部51が嵌合部46の軸線方向に複数列並べられることで、嵌合部46の軸線方向に隣り合う凸部51の列同士の間には嵌合部46の全周にわたる環状の溝部55が形成されている。   The plurality of convex portions 51 constituting the same row in the axial direction are arranged at equal intervals in the circumferential direction of the fitting portion 46, and as a result, adjacent to the plurality of convex portions 51 constituting the same row in the axial direction. A groove 54 along the axial direction of the fitting portion 51 is formed between the mating members. Further, by arranging a plurality of rows of convex portions 51 in the axial direction of the fitting portion 46, a ring extending over the entire circumference of the fitting portion 46 is provided between the rows of convex portions 51 adjacent to each other in the axial direction of the fitting portion 46. The groove portion 55 is formed.

そして、軸線方向に隣り合う列では一方の列の凸部51同士の間の溝部54の中央と、他方の列の凸部51の中央とが嵌合部46の円周方向における位置を合わせている。ここで、嵌合部46の円周方向における凸部51の幅は溝部54の幅よりも広くされている。よって、軸線方向に隣り合う列の凸部51同士は嵌合部46の円周方向において一部重なり合い、また、軸線方向に隣り合う列の一方の列の溝部54と、他方の列の溝部54とは嵌合部46の円周方向に一部も重ならず完全に位置を異ならせている。   And in the row | line | column adjacent to an axial direction, the center of the groove part 54 between the convex parts 51 of one row | line | column and the center of the convex part 51 of the other row | line | column align the position in the circumferential direction of the fitting part 46. Yes. Here, the width of the convex portion 51 in the circumferential direction of the fitting portion 46 is wider than the width of the groove portion 54. Therefore, the convex portions 51 in the rows adjacent in the axial direction partially overlap in the circumferential direction of the fitting portion 46, and the groove portions 54 in one row in the rows adjacent in the axial direction and the groove portions 54 in the other row. The position of the fitting portion 46 is completely different without overlapping in the circumferential direction.

なお、三列あるうちの最も中間蛇腹部44側の列と中央の列とが上記関係となっており、最も中間蛇腹部44とは反対側の列と中央の列とについても上記関係となっている。その結果、最も中間蛇腹部44側の列と最も中間蛇腹部44とは反対側の列とは、凸部51同士が嵌合部45の円周方向において位置が合い、溝部54同士も嵌合部46の円周方向において位置が合っている。   Of the three rows, the row closest to the middle bellows portion 44 and the middle row have the above relationship, and the row on the opposite side of the middle bellows portion 44 and the middle row also have the above relationship. ing. As a result, the projections 51 are aligned with each other in the circumferential direction of the fitting portion 45 in the row closest to the intermediate bellows portion 44 and the row opposite to the middle bellows portion 44, and the grooves 54 are also fitted in each other. The positions of the portions 46 are aligned in the circumferential direction.

そして、最も中間蛇腹部44側の列の凸部51間にある、嵌合部46の軸線方向に沿う溝部54と、最も中間蛇腹部44側の凸部51の列と中央の凸部51の列との間の環状の溝部55と、中央の列の凸部51間にある、嵌合部46の軸線方向に沿う溝部54と、中央の凸部51の列と最も中間蛇腹部44とは反対側の凸部51の列との間の環状の溝部55と、最も中間蛇腹部44とは反対側の列の凸部51間にある、嵌合部46の軸線方向に沿う溝部54とが連通しており、その結果、嵌合部46の内周部には、嵌合部46の軸線方向に貫通する複数通りの貫通溝57が形成されている。そして、上記したように嵌合部46の軸線方向に隣り合う列の溝部54同士が互いに嵌合部46の円周方向に完全に位置をずらしているため、すべての貫通溝57は、軸線方向に異なる少なくとも二カ所の位置が互いに円周方向に完全にずれる形状をなしている。   And the groove part 54 along the axial direction of the fitting part 46 between the convex parts 51 of the row | line | column by the side of the most intermediate bellows part 44, the row | line | column of the convex part 51 by the side of the most intermediate bellows part 44, and the convex part 51 of the center. The annular groove 55 between the rows, the groove 54 along the axial direction of the fitting portion 46 between the convex portions 51 of the center row, and the row of the central convex portions 51 and the most intermediate bellows portion 44 are An annular groove 55 between the row of convex portions 51 on the opposite side, and a groove portion 54 along the axial direction of the fitting portion 46 between the convex portions 51 in the row on the opposite side to the intermediate bellows portion 44. As a result, a plurality of through grooves 57 penetrating in the axial direction of the fitting portion 46 are formed in the inner peripheral portion of the fitting portion 46. And since the groove parts 54 of the row | line | column adjacent to the axial direction of the fitting part 46 mutually shifted the position mutually in the circumferential direction of the fitting part 46 as mentioned above, all the through-grooves 57 are axial directions. The positions of at least two different positions are completely deviated from each other in the circumferential direction.

なお、嵌合部46の内周部にピン31を嵌合させると、すべての凸部51の先端面52がピン31の外周面に密着することになり、このとき、ピン31の外周面と貫通溝57とで嵌合部46を軸線方向に貫通するとともにブーツ35の中間蛇腹部44の内側に連通する空気通路を形成することになる。   When the pin 31 is fitted to the inner peripheral portion of the fitting portion 46, the tip surfaces 52 of all the convex portions 51 are in close contact with the outer peripheral surface of the pin 31, and at this time, the outer peripheral surface of the pin 31 and The through-groove 57 forms an air passage that penetrates the fitting portion 46 in the axial direction and communicates with the inside of the intermediate bellows portion 44 of the boot 35.

以上に述べた第1実施形態のディスクブレーキ11によれば、ガイド穴20の嵌合穴部40とピン31との間に介在するブーツ35の嵌合部46の内周部に、軸線方向に貫通する貫通溝57が形成され、すべての貫通溝57は、軸線方向に異なる少なくとも二カ所の位置が互いに円周方向にずれる形状をなしているため、ピン31からガイド穴20に伝わる力の方向が円周方向におけるいずれの方向となっても、嵌合部46の軸線方向の全長にわたって貫通溝57にピン31が入り込んでしまうことがない。したがって、ピン31からガイド穴20に伝わる力の方向が円周方向におけるいずれの方向となっても、ピン31とガイド穴20との間にいずれかの凸部51が常に介在し、その結果、ピン31とガイド穴20との打音を確実に低減することができる。   According to the disc brake 11 of the first embodiment described above, in the axial direction on the inner peripheral portion of the fitting portion 46 of the boot 35 interposed between the fitting hole portion 40 of the guide hole 20 and the pin 31. Through-grooves 57 are formed, and all the through-grooves 57 have a shape in which at least two positions different in the axial direction are shifted from each other in the circumferential direction, and therefore the direction of the force transmitted from the pin 31 to the guide hole 20 No matter which direction in the circumferential direction, the pin 31 does not enter the through groove 57 over the entire length of the fitting portion 46 in the axial direction. Therefore, even if the direction of the force transmitted from the pin 31 to the guide hole 20 is any direction in the circumferential direction, one of the convex portions 51 is always interposed between the pin 31 and the guide hole 20, and as a result, The hitting sound between the pin 31 and the guide hole 20 can be reliably reduced.

また、嵌合部46の内周部に、軸線方向に位置がずれ円周方向に一部重なり合う複数の凸部51を形成することでこれら凸部51の間に貫通溝57を形成することになるため、凸部51を円周方向に延在させても貫通溝57を形成できる。よって、ピン31の摺動時に嵌合部45に凸部51を介して回転方向の力が生じるのを防止することができる。   In addition, by forming a plurality of convex portions 51 that are displaced in the axial direction and partially overlap in the circumferential direction on the inner peripheral portion of the fitting portion 46, the through groove 57 is formed between the convex portions 51. Therefore, the through groove 57 can be formed even if the convex portion 51 extends in the circumferential direction. Therefore, it is possible to prevent a force in the rotational direction from being generated in the fitting portion 45 via the convex portion 51 when the pin 31 slides.

次に、本発明の第2実施形態のディスクブレーキを、主に図4を参照して第1実施形態との相違部分を中心に以下に説明する。なお、第1実施形態と同様の部分には同一の符号を付しその説明は略す。   Next, a disc brake according to a second embodiment of the present invention will be described below mainly with reference to FIG. 4 with a focus on differences from the first embodiment. In addition, the same code | symbol is attached | subjected to the part similar to 1st Embodiment, and the description is abbreviate | omitted.

第2実施形態のディスクブレーキは、図4に示すようにブーツ35の嵌合部46の内周部に、嵌合部46の軸線方向に対し傾斜する複数の直線状の凸部61が等間隔で形成され、隣り合う凸部61同士の間に嵌合部46の軸線方向に対し傾斜して嵌合部46の軸線方向に貫通する直線状の貫通溝62が形成されている。すべての貫通溝62は、それぞれの中間蛇腹部44側(図4における上側)の端部が中間蛇腹部44とは反対側(図4における下側)の端部に対し嵌合部46の円周方向(図4における左右方向)に一部も重ならず完全に位置がずれるように傾斜している。   In the disc brake according to the second embodiment, as shown in FIG. 4, a plurality of linear convex portions 61 that are inclined with respect to the axial direction of the fitting portion 46 are equidistantly arranged on the inner peripheral portion of the fitting portion 46 of the boot 35. A linear through groove 62 that is inclined with respect to the axial direction of the fitting portion 46 and penetrates in the axial direction of the fitting portion 46 is formed between the adjacent convex portions 61. All the through-grooves 62 have a circular portion of the fitting portion 46 with respect to the end portion on the side opposite to the intermediate bellows portion 44 (the lower side in FIG. 4) at the end portion on the intermediate bellows portion 44 side (upper side in FIG. 4). It is inclined so that the position is completely shifted without overlapping in the circumferential direction (left and right direction in FIG. 4).

このような第2実施形態のディスクブレーキにおいても、すべての貫通溝62は、それぞれの中間蛇腹部44側の端部が中間蛇腹部44とは反対側の端部に対し嵌合部46の円周方向に完全に位置がずれるように傾斜しているため、ピン31からガイド穴20に伝わる力の方向が円周方向におけるいずれの方向となっても、嵌合部46の軸線方向の全長にわたって貫通溝62にピン31が入り込んでしまうことがない。したがって、第1実施形態と同様、ピン31とガイド穴20との打音を確実に低減することができる。   Also in the disc brake of the second embodiment as described above, all the through grooves 62 are arranged such that the end portions on the side of the intermediate bellows portion 44 are circular with respect to the end portion on the side opposite to the intermediate bellows portion 44. Since it is tilted so that the position is completely displaced in the circumferential direction, the force transmitted from the pin 31 to the guide hole 20 is in any direction in the circumferential direction over the entire length of the fitting portion 46 in the axial direction. The pin 31 does not enter the through groove 62. Therefore, as in the first embodiment, the hitting sound between the pin 31 and the guide hole 20 can be reliably reduced.

また、嵌合部46の内周部に、軸線方向に対し傾斜する複数の凸部61を形成することでこれら凸部61の間に貫通溝62を形成することになるため、形状が簡単となり、コストを低減することができる。   In addition, by forming a plurality of convex portions 61 that are inclined with respect to the axial direction on the inner peripheral portion of the fitting portion 46, the through grooves 62 are formed between the convex portions 61, so that the shape is simplified. Cost can be reduced.

なお、凸部の形状は、凸部間に形成される貫通溝の軸線方向に異なる少なくとも二カ所の位置が互いに円周方向に一部も重ならないように完全にずれる形状をなすようにすれば、上記に限定されることなく、例えば円弧状、階段状や波状等、種々の形状を適用できる。   In addition, the shape of the convex portion should be such that at least two positions different in the axial direction of the through groove formed between the convex portions are completely deviated so as not to overlap each other in the circumferential direction. Without being limited to the above, various shapes such as an arc shape, a staircase shape, and a wave shape can be applied.

また、摺動案内部16のピン31をキャリア12側に設けガイド穴20をキャリパ17側に形成する場合にも、上記は適用可能である。   The above is also applicable when the pin 31 of the sliding guide portion 16 is provided on the carrier 12 side and the guide hole 20 is formed on the caliper 17 side.

本発明の第1実施形態のディスクブレーキを示す要部を断面とした平面図である。It is the top view which made the principal part which shows the disc brake of 1st Embodiment of this invention the cross section. 本発明の第1実施形態のディスクブレーキを示す要部の拡大断面図である。It is an expanded sectional view of the important section showing the disc brake of a 1st embodiment of the present invention. 本発明の第1実施形態のディスクブレーキにおけるブーツを示すもので、(a)は中心軸を通る断面図、(b)は正面図である。BRIEF DESCRIPTION OF THE DRAWINGS The boot in the disc brake of 1st Embodiment of this invention is shown, (a) is sectional drawing which passes along a central axis, (b) is a front view. 本発明の第2実施形態のディスクブレーキにおけるブーツの嵌合部の部分展開図である。It is a partial expanded view of the fitting part of the boot in the disc brake of 2nd Embodiment of this invention.

符号の説明Explanation of symbols

14,15 パッド
12 キャリア
16 摺動案内部
17 キャリパ
20 ガイド穴
31 ピン
35 ブーツ
46 嵌合部(介在部)
57,62 貫通溝
51,61 凸部
14, 15 Pad 12 Carrier 16 Sliding guide part 17 Caliper 20 Guide hole 31 Pin 35 Boot 46 Fitting part (intervening part)
57, 62 Through groove 51, 61 Convex part

Claims (3)

一対のパッドと、
これら一対のパッドを摺動自在に支持するキャリアと、
該キャリアに複数の摺動案内部を介して摺動自在に支持されるとともに、前記一対のパッドを両側から挾持可能なキャリパとを有し、
前記摺動案内部が、前記キャリアおよびキャリパのいずれか一方に形成されたガイド穴と、前記キャリアおよびキャリパのいずれか他方に設けられ前記ガイド穴に摺動自在に嵌合されるピンと、これらピンとガイド穴との隙間を覆うブーツとを備えたディスクブレーキにおいて、
前記ガイド穴と前記ピンとの間に前記ブーツの介在部を介在させ、
該介在部には、前記ピン側の内周部に、前記ガイド穴と前記ピンとの間に介在した状態で前記介在部の軸線方向に開口して貫通する貫通溝が形成され、前記貫通溝は、軸線方向に異なる少なくとも二カ所の位置が互いに円周方向にずれる形状をなしていることを特徴とするディスクブレーキ。
A pair of pads;
A carrier that slidably supports the pair of pads;
The carrier is slidably supported via a plurality of sliding guides, and has a caliper capable of holding the pair of pads from both sides,
A guide hole formed in one of the carrier and the caliper; a pin provided on the other of the carrier and the caliper; and a slidably fitted into the guide hole; In disc brakes with boots that cover the gap with the guide hole,
Interposing an intervening portion of the boot between the guide hole and the pin;
In the interposition part , a through groove is formed in the inner peripheral part on the pin side so as to open and penetrate in the axial direction of the interposition part in a state of being interposed between the guide hole and the pin. The disc brake is characterized in that at least two positions different in the axial direction are shifted from each other in the circumferential direction.
前記介在部の内周部には、軸線方向に位置がずれ円周方向に一部重なり合う複数の凸部が形成され、これら凸部の間に前記貫通溝が形成されていることを特徴とする請求項1記載のディスクブレーキ。   A plurality of convex portions that are displaced in the axial direction and partially overlap in the circumferential direction are formed in the inner peripheral portion of the interposition portion, and the through groove is formed between the convex portions. The disc brake according to claim 1. 前記介在部の内周部には、軸線方向に対し傾斜する複数の凸部が形成され、これら凸部の間に前記貫通溝が形成されていることを特徴とする請求項1記載のディスクブレーキ。   The disc brake according to claim 1, wherein a plurality of convex portions that are inclined with respect to the axial direction are formed on an inner peripheral portion of the interposition portion, and the through groove is formed between the convex portions. .
JP2004221795A 2004-07-29 2004-07-29 Disc brake Expired - Fee Related JP4425737B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2610519A1 (en) 2011-12-27 2013-07-03 Akebono Brake Industry Co., Ltd. Disc brake apparatus
JP2016537597A (en) * 2013-11-18 2016-12-01 シャシー・ブレークス・インターナショナル・ベスローテン・フェンノートシャップ Sliding caliper, disc and brake for discharging air between pin and bore

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016181896A1 (en) * 2015-05-08 2016-11-17 日立オートモティブシステムズ株式会社 Disc brake
CN112303153A (en) * 2019-07-29 2021-02-02 重庆长安汽车股份有限公司 Damping structure for pin shaft of brake caliper

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JPH0665632U (en) * 1993-02-24 1994-09-16 日清紡績株式会社 Pin slide type disc brake device
JP2000110946A (en) * 1998-10-06 2000-04-18 Koyo Sealing Techno Co Ltd Hermetic sealing device
JP2003056718A (en) * 2001-08-22 2003-02-26 Koyo Seiko Co Ltd Oil seal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2610519A1 (en) 2011-12-27 2013-07-03 Akebono Brake Industry Co., Ltd. Disc brake apparatus
US8857576B2 (en) 2011-12-27 2014-10-14 Akebono Brake Industry Co., Ltd. Disc brake apparatus
JP2016537597A (en) * 2013-11-18 2016-12-01 シャシー・ブレークス・インターナショナル・ベスローテン・フェンノートシャップ Sliding caliper, disc and brake for discharging air between pin and bore

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