JP2004183904A - Disk brake for vehicle - Google Patents

Disk brake for vehicle Download PDF

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JP2004183904A
JP2004183904A JP2004094318A JP2004094318A JP2004183904A JP 2004183904 A JP2004183904 A JP 2004183904A JP 2004094318 A JP2004094318 A JP 2004094318A JP 2004094318 A JP2004094318 A JP 2004094318A JP 2004183904 A JP2004183904 A JP 2004183904A
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pad
disk
pieces
friction
friction pads
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Genichi Hatagoshi
弦一 波多腰
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Nissin Kogyo Co Ltd
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Nissin Kogyo Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a pad spring of one-sheet structure favorable for assemblability, productivity and cost performance by ensuring a predetermined set load required for a friction pad. <P>SOLUTION: Pad-pressing pieces 16a and 16b of crank-shaped section to press an outer surface in the radial direction of a disk of friction pads 4 and 4 and a connection piece 16d continuous to the pad pressing pieces 16a and 16b are provided on a pad spring 16. Pin contact parts 16g and 16h to be brought into elastic contact with an inner side surface in the radial direction of the disk of a hanger pin 15 are provided on the connection piece 16d and centers of reinforcing pieces 16f and 16f. The pad pressing piece 16a is formed slightly longer than the width in the axial direction of the disk of a top opening part 14, and the pad pressing 16b is formed shorter than the width in the axial direction of the disk of the top opening part 14. The reaction force from the hanger pin 15 is given as a resilient force inward of the disk to the pad pressing pieces 16a and 16b from the connection piece 16d and the reinforcing pieces 16f and 16f. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

本発明は、自動車や自動二・三輪車等の走行車両に搭載されるディスクブレーキに係り、詳しくは、ハンガーピンを用いて摩擦パッドを吊持する形式のディスクブレーキに関する。   The present invention relates to a disc brake mounted on a traveling vehicle such as an automobile or a motorcycle, and more particularly to a disc brake of a type in which a friction pad is suspended using a hanger pin.

一対の摩擦パッドを、キャリパボディにハンガーピンを用いて吊持する形式の車両用ディスクブレーキにあっては、摩擦パッドのディスク半径方向外側に板状のパッドスプリングを縮設し、摩擦パッドをパッドスプリングにてディスク内方へ付勢して、摩擦パッドが走行振動でガタ付いたり、制動時にディスク外方へ浮き上がることのないようにしている（例えば、特許文献１参照。）。   In a vehicle disk brake of a type in which a pair of friction pads are hung on a caliper body using hanger pins, a plate-shaped pad spring is contracted outside the friction pad in a radial direction of the disk, and the friction pad is padded. A spring is urged inwardly of the disk so that the friction pad does not rattle due to running vibration or float out of the disk during braking (for example, see Patent Document 1).

このディスクブレーキは、キャリパボディに架設されるハンガーピンを摩擦パッドの吊下げ片に挿通して、ディスクロータの両側に一対の摩擦パッドを対向配置し、パッドスプリングに一対のパッド抑え片と両パッド抑え片をつなぐ連結片とを設けて、ディスクロータの外側でディスク周方向に配設される連結片の中央を、ハンガーピンのディスク半径方向内側面に弾接し、双方のパッド抑え片を摩擦パッドのディスク半径方向外側面のディスク回入側と回出側とに当接させることにより、摩擦パッドをディスク内方へ付勢している。
特開平５−１８０２５０号公報 In this disc brake, a hanger pin installed on a caliper body is inserted into a suspension piece of a friction pad, a pair of friction pads are arranged on both sides of a disc rotor to face each other, and a pair of pad holding pieces and both pads are attached to a pad spring. A connecting piece that connects the holding pieces is provided, and the center of the connecting piece arranged in the disk circumferential direction outside the disk rotor is elastically contacted with the inner surface of the hanger pin in the radial direction of the disk, and both pad holding pieces are friction pads. The friction pad is urged inward of the disk by making contact with the disk inflow side and the outflow side of the disk radially outer surface.
JP-A-5-180250

このような構成にあっては、パッドスプリングの連結片にある程度の横幅を確保することによって、パッド抑え片から摩擦パッドに作用するセット荷重が保持されるが、ディスクロータ両側の摩擦パッドが、ライニングの摩耗に連れて徐々にディスクロータ方向へアジャストされて行き、さらにライニングの全部がフル摩耗した場合には、双方の摩擦パッドの裏板が、ディスクロータを直接挟むように位置して、パッドスプリングの連結片が、両摩擦パッドの吊下げ片の間に挟まれるため、連結片をディスクロータの厚さよりも幅広にすることができないという制約がある。   In such a configuration, by setting a certain width to the connecting piece of the pad spring, the set load acting on the friction pad from the pad holding piece is retained, but the friction pads on both sides of the disk rotor are When the lining is fully worn out, the back plates of both friction pads are positioned so as to directly sandwich the disk rotor, and the pad springs Is sandwiched between the hanging pieces of the friction pads, so that the connecting piece cannot be made wider than the thickness of the disk rotor.

このため、上述のディスクブレーキでは、略同一形状の２枚のパッドスプリングを重合して用いることによって、摩擦パッドを抑えるのに必要な所要のセット荷重を確保しているが、このような二枚重ね構造は、ばね下荷重の増加を招き、また組付け性と生産性並びにコスト面から不利であった。   For this reason, in the above-mentioned disc brake, a required set load necessary for suppressing the friction pad is secured by superposing and using two pad springs having substantially the same shape. This causes an increase in unsprung load, and is disadvantageous in terms of assemblability, productivity and cost.

そこで本発明は、一枚板構造のパッドスプリングに、摩擦パッドに作用するセット荷重を充分に確保して、上述の諸問題を解消した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。   SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle disk brake in which a set load acting on a friction pad is sufficiently secured in a single-plate pad spring, and the above-mentioned problems are solved.

本発明は、上述の目的に従って、ディスクロータの外側を跨いで配設されるキャリパボディのブリッジ部に、摩擦パッドを抜き差しする天井開口部を内外に貫通して設け、該天井開口部をディスク軸方向に貫通してキャリパボディに架設されるハンガーピンを摩擦パッドのパッド吊下げ片に挿通して、前記ディスクロータの両側部に一対の摩擦パッドを対向配置し、該一対の摩擦パッドを１枚構造のパッドスプリングにてディスク内方へ付勢する車両用ディスクブレーキにおいて、前記パッドスプリングは、前記一対の摩擦パッドのディスク半径方向外側面を押圧するパッド抑え片と、該パッド抑え片に連続して前記一対の摩擦パッドの吊下げ片の間をディスク周方向に配設され、前記ハンガーピンのディスク半径方向内側面に弾接する連結片とを有し、前記パッド抑え片は、天井開口部のディスク軸方向の幅よりも長く形成されると共に断面クランク状に形成されていることを特徴としている。かかる構成によれば、パッドスプリングの補強片は、摩擦パッドの反ディスクロータ側に配設され、ライニングの摩耗に連れてディスクロータ方向へアジャストする摩擦パッドに支障とならない。従って、横幅をディスクロータの板厚内に制限された連結片に不足するセット荷重を補強片に持たせることができるようになる。   According to the present invention, in accordance with the above-mentioned object, a ceiling opening through which a friction pad is inserted and removed is provided in a bridge portion of a caliper body disposed over the outside of a disk rotor so as to penetrate inside and outside, and the ceiling opening is formed by a disk shaft. A hanger pin, which penetrates the caliper body and penetrates in the direction, is inserted into a pad hanging piece of the friction pad, and a pair of friction pads are arranged to oppose each other on both sides of the disk rotor. In a vehicle disk brake for urging a disk inward with a pad spring having a structure, the pad spring includes a pad pressing piece that presses a radially outer surface of the pair of friction pads in the disk radial direction, and the pad pressing piece is continuous with the pad pressing piece. A connection is provided between the hanging pieces of the pair of friction pads in the circumferential direction of the disk and elastically contacts the inner surface of the hanger pin in the radial direction of the disk. Has the door, the pad pressing piece is characterized in that it is formed in a sectional shape of a crank while being longer than the disk axial direction of width of ceiling opening. According to this configuration, the reinforcing piece of the pad spring is disposed on the side of the friction pad opposite to the disk rotor, and does not hinder the friction pad that adjusts in the direction of the disk rotor as the lining wears. Therefore, the reinforcing piece can have a set load that is insufficient for the connecting piece whose lateral width is limited to the thickness of the disk rotor.

本発明の車両用ディスクブレーキは、従来の二枚重ね構造のものと較べると、軽量化によるばね下荷重の軽減が図れ、またパッドスプリングの生産性とキャリパボディへの組付け性に優れると共に、コスト的にも有利なものとなる。   The disc brake for a vehicle according to the present invention can reduce the unsprung load by weight reduction as compared with the conventional two-layered structure, and is excellent in productivity of pad springs and in ease of assembling to a caliper body, and at a low cost. Is also advantageous.

以下、本発明の一形態例を図１乃至図４に基づいて説明する。ディスクブレーキ１は、図示しない車輪と矢印Ａ方向へ一体に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た４ポット対向型のキャリパボディ３と、キャリパボディ３の作用部３ａ，３ｂ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４，４とを持っている。   An embodiment of the present invention will be described below with reference to FIGS. The disc brake 1 includes a disc rotor 2 that rotates integrally with a wheel (not shown) in the direction of arrow A, a four-pot opposed caliper body 3 fixed to the vehicle body at one side of the disc rotor 2, and a caliper body 3 And a pair of friction pads 4 and 4 which are arranged to face each other with the disk rotor 2 interposed between the action portions 3a and 3b.

キャリパボディ３は、作用部３ａ，３ｂのそれぞれに、ディスクロータ２の外側を跨いで配設されるブリッジ部３ｃの半部ずつを一体形成した一対のキャリパ半体３ｄ，３ｅを、４本の連結ボルト７で連結して構成されており、作用部３ａ，３ｂに対向して設けられた大小４個のシリンダ孔８には、それぞれコップ状のピストン９が液密に内挿され、各ピストン９とシリンダ孔８の底部との間に液圧室１０が画成されている。   The caliper body 3 includes a pair of caliper halves 3 d and 3 e integrally formed with each of the action portions 3 a and 3 b, each of which has a half of a bridge portion 3 c disposed across the outside of the disk rotor 2. Cup-shaped pistons 9 are inserted into the four large and small cylinder holes 8 provided opposite to the action portions 3a, 3b in a liquid-tight manner. A hydraulic chamber 10 is defined between 9 and the bottom of the cylinder hole 8.

車体取付け側となる一方の作用部３ａには、ディスク回出側の液圧室１０に作動液を導入するためのユニオン孔１１と、作動液中の混入エアを排出するためのブリーダスクリュ１２とが設けられている。作用部３ａの２つの液圧室１０，１０は図示しない液通孔にて連通し、またディスクロータ２を挟んでディスク回入側と回出側のそれぞれに対向する２つずつの液圧室１０，１０が、ブリッジ部３ｃを貫通する２本の液通孔１３，１３にて連通している。   The one working portion 3a on the vehicle body mounting side has a union hole 11 for introducing a hydraulic fluid into the hydraulic chamber 10 on the disc outlet side, and a bleeder screw 12 for discharging air mixed in the hydraulic fluid. Is provided. The two hydraulic chambers 10 and 10 of the action portion 3a communicate with each other through a liquid through hole (not shown), and two hydraulic chambers respectively opposed to the disk inlet side and the disk outlet side with the disk rotor 2 interposed therebetween. 10 and 10 communicate with each other through two liquid through holes 13 and 13 penetrating the bridge portion 3c.

ブリッジ部３ｃの中央には、矩形の天井開口部１４が、ディスクロータ２の両側部に摩擦パッド４，４を抜き差しできる大きさで内外に貫通形成されている。天井開口部１４の作用部側壁３ｆ，３ｆは、ディスク回入及び回出側の側壁よりも低く窪んでおり、作用部側壁３ｆ，３ｆのディスク回入側に別途のガイド溝３ｇ，３ｇが凹設されると共に、作用部側壁３ｆ，３ｆの外側中央には、作用部３ａ，３ｂの外面から突出したハンガーピン取付け用のボス部３ｈ，３ｉが、ディスク回入及び回出側の側壁と略同一の高さに延びている。   At the center of the bridge portion 3c, rectangular ceiling openings 14 are formed through the inside and outside of the disc rotor 2 so that the friction pads 4 can be inserted into and removed from both sides of the disc rotor 2. The action section side walls 3f, 3f of the ceiling opening 14 are recessed lower than the side walls on the disk entry and exit side, and separate guide grooves 3g, 3g are recessed on the disc entry side of the action section side walls 3f, 3f. In addition, bosses 3h and 3i for attaching hanger pins protruding from the outer surfaces of the operation portions 3a and 3b are provided substantially at the center of the outside of the operation portion side walls 3f and 3f. Extend to the same height.

作用部３ａ，３ｂのディスクロータ側面ディスク回入側及び回出側には、上下に分断されたトルク受け部３ｊ，３ｊが、天井開口部１４のディスク回入側面及び回出側面と面一に設けられており、各摩擦パッド４は、これらトルク受け部３ｊ，３ｊの間にライニング５と裏板６の本体部６ａを収容し、天井開口部１４内に位置する吊下げ片６ｂのピン孔６ｃに、天井開口部１４をディスク軸方向に貫通してボス部３ｈ，３ｉに架設されるハンガーピン１５を挿通して、ピストン９，９の前面にディスク軸方向へ移動可能に吊持されており、さらにハンガーピン１５との間に係着されたパッドスプリング１６にてディスク内方へ付勢されている。   The upper and lower divided torque receiving portions 3j, 3j are flush with the disk entrance side and the exit side of the ceiling opening 14 on the disk entrance side and the exit side of the action portion 3a, 3b. Each friction pad 4 accommodates the main body 6a of the lining 5 and the back plate 6 between the torque receiving portions 3j, 3j, and the pin holes of the hanging pieces 6b located in the ceiling opening 14. 6c, the hanger pin 15 which penetrates through the ceiling opening 14 in the disk axis direction and extends over the bosses 3h, 3i is inserted, and is hung on the front surfaces of the pistons 9, 9 so as to be movable in the disk axis direction. Further, the disk is urged inwardly by a pad spring 16 engaged with the hanger pin 15.

前記ユニオン孔１１には、別途の液圧マスタシリンダにブレーキホース（いずれも図示せず）を介して接続され、運転者のブレーキ操作によって液圧マスタシリンダで昇圧された作動液は、ユニオン孔１１を通して４つの液圧室１０へ供給され、各ピストン９をシリンダ孔８の開口部方向へ押動し、それぞれの摩擦パッド４のライニング５をディスクロータ２の側面へ押圧して、制動作用が行なわれる。   The union hole 11 is connected to a separate hydraulic master cylinder via a brake hose (both not shown), and the hydraulic fluid pressurized by the hydraulic master cylinder by a driver's brake operation is supplied to the union hole 11. To the four hydraulic chambers 10 to push each piston 9 toward the opening of the cylinder hole 8 and press the lining 5 of each friction pad 4 against the side surface of the disk rotor 2 to perform a braking action. It is.

パッドスプリング１６は、断面クランク状に形成された長短一対の平行なパッド抑え片１６ａ，１６ｂと、パッド抑え片１６ａ，１６ｂの一部として内側部に連続する平板部１６ｃ，１６ｃと、両平板部１６ｃ，１６ｃの中央を連結する連結片１６ｄと、平板部１６ｃ，１６ｃから連結片１６ｄを挟んで突出する４枚のカバー部１６ｅと、対向するカバー部１６ｅ，１６ｅの外側を迂回して、平板部１６ｃ，１６ｃの側端から略台形に突出する補強片１６ｆ，１６ｆとからなっている。   The pad spring 16 includes a pair of long and short parallel pad pressing pieces 16a and 16b formed in a crank shape in cross section, flat plate sections 16c and 16c continuous to the inside as a part of the pad pressing pieces 16a and 16b, and both flat sections. A connecting piece 16d connecting the centers of the connecting portions 16c, 16c, four cover portions 16e projecting from the flat plate portions 16c, 16c with the connecting piece 16d interposed therebetween, and a flat plate bypassing the outside of the facing cover portions 16e, 16e. Reinforcement pieces 16f, 16f projecting from the side ends of the portions 16c, 16c in a substantially trapezoidal shape.

一方のパッド抑え片１６ａは、天井開口部１４のディスク軸方向の幅よりもやや長く形成され、他方のパッド抑え片１６ｂは、同じく天井開口部１４のディスク軸方向の幅よりもやや短く形成されている。また中央の連結片１６ｄは、ディスクロータ２の厚さと同一かこれよりもやや狭い横幅で形成されており、外側へ湾曲して盛上げた中間部の中央に、ハンガーピン１５の外径と同一円弧状のピン当接部１６ｇが凹設されている。連結片１６ｄと平行な補強片１６ｆ，１６ｆの中間部分は、パッド抑え片１６ａ，１６ｂや平板部１６ｃよりも外側に位置しており、この中間部分の中央には、連結片１６ｄのピン当接部１６ｇと同形のピン当接部１６ｈ，１６ｈが、連結片１６ｄのピン当接部１６ｇと同一直線上に凹設されている。   One pad pressing piece 16a is formed to be slightly longer than the width of the ceiling opening 14 in the disk axis direction, and the other pad pressing piece 16b is also formed to be slightly shorter than the width of the ceiling opening 14 in the disk axis direction. ing. The center connecting piece 16d is formed to have the same width as the thickness of the disk rotor 2 or a width slightly smaller than the thickness thereof. An arcuate pin contact portion 16g is recessed. An intermediate portion of the reinforcing pieces 16f, 16f parallel to the connecting piece 16d is located outside the pad holding pieces 16a, 16b and the flat plate portion 16c, and a pin contact of the connecting piece 16d is provided at the center of the intermediate portion. Pin contact portions 16h, 16h having the same shape as the portion 16g are recessed on the same straight line as the pin contact portion 16g of the connecting piece 16d.

上記パッドスプリング１６は、摩擦パッド４，４を天井開口部１４からディスクロータ２の両側部へ差し入れたのち、パッド抑え片１６ａ，１６ｂを、天井開口部１４内で裏板６，６の本体部６ａ，６ａの外面ディスク回入側端及び回出側端に掛け渡して、ディスク回入側の一方のパッド抑え片１６ａの両端を、ブリッジ部３ｃのガイド溝３ｇ，３ｇに収容する。これにより、中央の連結片１６ｄはディスクロータ２の外側に沿って位置し、両側部の補強片１６ｆ，１６ｆが天井開口部１４の作用部側壁３ｆ，３ｆの外側に位置すると共に、４枚のカバー部１６ｅが、裏板６の吊下げ片６ｂを挟みながら、摩擦パッド４，４のディスク半径方向外側を覆って配設される。   The pad spring 16 inserts the friction pads 4, 4 from the ceiling opening 14 into both sides of the disk rotor 2, and then removes the pad holding pieces 16 a, 16 b within the ceiling opening 14 to form the body portions of the back plates 6, 6. The two ends of one pad holding piece 16a on the disk entry side are accommodated in the guide grooves 3g, 3g of the bridge portion 3c by bridging the outer disk entry side end and the exit side end of 6a, 6a. Accordingly, the center connecting piece 16d is located along the outside of the disk rotor 2, the reinforcing pieces 16f on both sides are located outside the action portion side walls 3f, 3f of the ceiling opening 14, and the four connecting pieces 16d are located on the outside. A cover portion 16e is disposed so as to cover the outer sides of the friction pads 4 and 4 in the radial direction of the disk while sandwiching the hanging pieces 6b of the back plate 6.

次に、連結片１６ｄと補強片１６ｆ，１６ｆの中央部をディスク内方へ押圧しながら、ボス部３ｈ，３ｉにハンガーピン１５を掛け渡して摩擦パッド４，４を吊持したのち、連結片１６ｄと補強片１６ｆ，１６ｆの押圧を解除すると、ディスクロータ２の外側で、連結片１６ｄのピン当接部１６ｇがハンガーピン１５のディスク半径方向内側面と弾接し、また摩擦パッド４，４の反ディスクロータ側を迂回した補強片１６ｆ，１６ｆのピン当接部１６ｈ，１６ｈが、同じくハンガーピン１５のディスク半径方向内側面と弾接する。ハンガーピン１５に弾接した連結片１６ｄと補強片１６ｆ，１６ｆにはハンガーピン１５からの反力が作用し、この反力はさらに裏板６，６の外面ディスク回入側端及び回出側端に掛け渡されたパッド抑え片１６ａ，１６ｂにディスク内方への弾発力として伝達され、両摩擦パッド４，４はパッド抑え片１６ａ，１６ｂに付与された弾発力によって、それぞれディスク内方へ付勢される。   Next, while pressing the central portions of the connecting pieces 16d and the reinforcing pieces 16f, 16f inwardly of the disc, the hanger pins 15 are hung over the bosses 3h, 3i to suspend the friction pads 4, 4, and then the connecting pieces 16d. When the pressing of the reinforcing pieces 16d and the reinforcing pieces 16f, 16f is released, the pin contact portion 16g of the connecting piece 16d elastically contacts the inner surface of the hanger pin 15 in the radial direction of the disc outside the disc rotor 2, and the friction pads 4, 4 The pin contact portions 16h, 16h of the reinforcing pieces 16f, 16f bypassing the side opposite to the disk rotor, also elastically contact the inner surface of the hanger pin 15 in the disk radial direction. A reaction force from the hanger pin 15 acts on the connecting piece 16d and the reinforcing pieces 16f, 16f elastically contacting the hanger pin 15, and this reaction force is further applied to the outer disk reciprocating side end and the revolving side of the back plates 6, 6. The frictional pads 4 and 4 are transmitted to the pad holding pieces 16a and 16b applied to the ends as resilient force toward the inside of the disc, and the friction pads 4 and 4 are resiliently applied to the pad holding pieces 16a and 16b. It is urged toward.

パッド抑え片１６ａ，１６ｂに作用する弾発力は、中央の連結片１６ｄに設定されたセット荷重のほか、両側の補強片１６ｆ，１６ｆからも、横幅をディスクロータ２の板厚内に制限された連結片１６ｄに不足するセット荷重が作用するので、摩擦パッド４，４のガタ付きや制動時の浮き上がりを有効に防止することができる。また、双方の補強片１６ｆ，１６ｆは、摩擦パッド４，４の反ディスクロータ側を迂回して配設されるので、摩擦パッド４，４がライニング５の摩耗に連れてディスクロータ方向へアジャストし、ライニング５がフル摩耗して双方の裏板６，６がディスクロータ２を直接挟むように位置しても、パッドスプリング１６の連結片１６ｄや補強片１６ｆ，１６ｆが制動の支障となることはない。   The resilient force acting on the pad holding pieces 16a, 16b is limited in the width within the plate thickness of the disk rotor 2 by the set load set on the center connecting piece 16d and also by the reinforcing pieces 16f, 16f on both sides. Since the insufficient set load acts on the connecting piece 16d, it is possible to effectively prevent the friction pads 4 and 4 from rattling and floating during braking. Further, since both reinforcing pieces 16f, 16f are disposed so as to bypass the friction pads 4, 4 on the side opposite to the disk rotor, the friction pads 4, 4 adjust in the disk rotor direction as the lining 5 wears. Even if the lining 5 is fully worn and both back plates 6 and 6 are positioned so as to directly sandwich the disk rotor 2, the connecting pieces 16d and the reinforcing pieces 16f and 16f of the pad spring 16 do not hinder braking. Absent.

このように、本形態例のパッドスプリング１６は、一枚板構造でありながら、摩擦パッド４，４の抑えに必要な所要のセット荷重を持たせることができ、従来の二枚重ね構造のものと較べると、軽量化によるばね下荷重の軽減が図れ、またパッドスプリング１６の生産性とキャリパボディ３への組付け性に優れると共に、コスト的にも有利なものとなる。   As described above, the pad spring 16 of the present embodiment can have a required set load necessary for suppressing the friction pads 4 and 4 in spite of having a single-plate structure, and can be compared with the conventional two-layer structure. Thus, the unsprung load can be reduced by reducing the weight, and the productivity of the pad spring 16 and the assemblability to the caliper body 3 are excellent, and the cost is also advantageous.

さらに、パッドスプリング１６に設けた４枚のカバー部１６ｅが、裏板６の吊下げ片６ｂを挟んで、摩擦パッド４，４のディスク半径方向外側を覆うので、キャリパボディ３の内部に水や土砂が侵入しにくくなり、土砂の付着や錆によるディスクブレーキ１の作動不良を有効に抑制することができ、また耐久性の向上も図ることができる。   Further, the four cover portions 16e provided on the pad spring 16 cover the outer sides of the friction pads 4 and 4 in the disk radial direction with the hanging pieces 6b of the back plate 6 interposed therebetween, so that water or The earth and sand are less likely to enter, and the operation failure of the disc brake 1 due to the adhesion of earth and sand and rust can be effectively suppressed, and the durability can be improved.

本発明の一形態例を示すディスクブレーキの一部断面平面図1 is a partial cross-sectional plan view of a disc brake showing one embodiment of the present invention. 図１のII−II断面図II-II sectional view of FIG. 図２のIII −III 断面図III-III sectional view of FIG. 本発明の一形態例を示すパッドスプリングの斜視図FIG. 2 is a perspective view of a pad spring showing one embodiment of the present invention.

符号の説明Explanation of reference numerals

１…ディスクブレーキ、２…ディスクロータ、３…４ポット対向型のキャリパボディ、３ａ，３ｂ…作用部、３ｃ…ブリッジ部、３ｆ…天井開口部１４の作用部側壁、３ｈ，３ｉ…ハンガーピン取付け用のボス部、３ｊ…トルク受け部、４…摩擦パッド、５…ライニング、６…裏板、６ａ…裏板６の本体部、６ｂ…裏板６の吊下げ片、６ｃ…ピン孔、１４…天井開口部、１５…ハンガーピン、１６…パッドスプリング、１６ａ，１６ｂ…パッド抑え片、１６ｄ…連結片、１６ｅ…カバー部、１６ｆ…補強片、１６ｇ，１６ｈ…ピン当接部
DESCRIPTION OF SYMBOLS 1 ... Disc brake, 2 ... Disc rotor, 3 ... 4-pot facing caliper body, 3a, 3b ... Working part, 3c ... Bridge part, 3f ... Working part side wall of ceiling opening 14, 3h, 3i ... Hanger pin attachment Boss portion, 3j torque receiving portion, 4 friction pad, 5 lining, 6 back plate, 6a body portion of back plate 6, 6b hanging piece of back plate 6, 6c pin hole, 14 ... ceiling opening, 15 ... hanger pin, 16 ... pad spring, 16a, 16b ... pad holding piece, 16d ... connecting piece, 16e ... cover part, 16f ... reinforcing piece, 16g, 16h ... pin contact part

Claims (1)

ディスクロータの外側を跨いで配設されるキャリパボディのブリッジ部に、摩擦パッドを抜き差しする天井開口部を内外に貫通して設け、該天井開口部をディスク軸方向に貫通してキャリパボディに架設されるハンガーピンを摩擦パッドのパッド吊下げ片に挿通して、前記ディスクロータの両側部に一対の摩擦パッドを対向配置し、該一対の摩擦パッドを１枚構造のパッドスプリングにてディスク内方へ付勢する車両用ディスクブレーキにおいて、前記パッドスプリングは、前記一対の摩擦パッドのディスク半径方向外側面を押圧するパッド抑え片と、該パッド抑え片に連続して前記一対の摩擦パッドの吊下げ片の間をディスク周方向に配設され、前記ハンガーピンのディスク半径方向内側面に弾接する連結片とを有し、前記パッド抑え片は、天井開口部のディスク軸方向の幅よりも長く形成されると共に断面クランク状に形成されていることを特徴とする車両用ディスクブレーキ。
A bridge opening of a caliper body disposed over the outside of the disk rotor is provided with a ceiling opening through which friction pads are inserted and removed through the inside and outside, and the ceiling opening penetrates in the disk axial direction and is mounted on the caliper body. The hanger pin is inserted into the pad hanging piece of the friction pad, and a pair of friction pads are arranged on both sides of the disc rotor so as to face each other. In the vehicle disc brake for urging, the pad spring includes a pad pressing piece that presses a radially outer surface of the pair of friction pads in a disk radial direction, and a suspension of the pair of friction pads continuously to the pad pressing piece. A connection piece disposed between the pieces in the circumferential direction of the disc and elastically contacting the inner surface of the hanger pin in the disc radial direction. Vehicle disc brake, characterized in that it is formed in a sectional shape of a crank while being longer than the disk axial direction of width of ceiling opening.
JP2004094318A 2004-03-29 2004-03-29 Disk brake for vehicle Pending JP2004183904A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004094318A JP2004183904A (en) 2004-03-29 2004-03-29 Disk brake for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004094318A JP2004183904A (en) 2004-03-29 2004-03-29 Disk brake for vehicle

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP01871397A Division JP3619943B2 (en) 1997-01-31 1997-01-31 Vehicle disc brake

Publications (1)

Publication Number Publication Date
JP2004183904A true JP2004183904A (en) 2004-07-02

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ID=32768343

Family Applications (1)

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JP2004094318A Pending JP2004183904A (en) 2004-03-29 2004-03-29 Disk brake for vehicle

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Country Link
JP (1) JP2004183904A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008014486A (en) * 2006-06-05 2008-01-24 Akebono Brake Ind Co Ltd Opposed piston type disc brake
JP2009068593A (en) * 2007-09-13 2009-04-02 Akebono Brake Ind Co Ltd Opposed piston type disc brake
WO2022045107A1 (en) 2020-08-25 2022-03-03 日立Astemo株式会社 Disc brake device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008014486A (en) * 2006-06-05 2008-01-24 Akebono Brake Ind Co Ltd Opposed piston type disc brake
JP4651640B2 (en) * 2006-06-05 2011-03-16 曙ブレーキ工業株式会社 Opposite piston type disc brake
JP2009068593A (en) * 2007-09-13 2009-04-02 Akebono Brake Ind Co Ltd Opposed piston type disc brake
WO2022045107A1 (en) 2020-08-25 2022-03-03 日立Astemo株式会社 Disc brake device

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