JP4818307B2 - Disc brake for radial mount type vehicle - Google Patents

Disc brake for radial mount type vehicle Download PDF

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JP4818307B2
JP4818307B2 JP2008107453A JP2008107453A JP4818307B2 JP 4818307 B2 JP4818307 B2 JP 4818307B2 JP 2008107453 A JP2008107453 A JP 2008107453A JP 2008107453 A JP2008107453 A JP 2008107453A JP 4818307 B2 JP4818307 B2 JP 4818307B2
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disc
mounting
caliper body
disk
peripheral side
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JP2009257480A (en
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弦一 波多腰
克彦 芦田
千尋 増田
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Nissin Kogyo Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a radial mount type vehicular disc brake capable of securing necessary rigidity without increasing the size of a caliper body and a caliper mounting part and of suppressing brake squeal. <P>SOLUTION: A straight line L1 interconnecting centers in the axial line directions of mounting bolt insertion holes 6d, 6d provided in one action part 6a of the caliper body 6 is arranged on the disc inner peripheral side from the position of the axial lines C1, C1 of cylinder holes 6f, 6f. A reinforcement rib 6i is provided between the disc inner peripheral side face of the caliper body 6 and the caliper body central side outer peripheral face of a mounting boss part 6c. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、ラジアルマウント式車両用ディスクブレーキに関し、詳しくは、自動二輪車や自動車等の各種走行車両に用いられるディスクブレーキにおけるラジアルマウント式ピストン対向型のキャリパボディの車体への取付構造に関する。   The present invention relates to a disk mount brake for a radial mount type vehicle, and more particularly to a structure for mounting a radial mount type piston-facing caliper body on a vehicle body in a disc brake used in various traveling vehicles such as motorcycles and automobiles.

車両用ディスクブレーキとして、ディスクロータの両側部にブリッジ部にて連結された作用部を対向配置し、各作用部にピストンを収容するシリンダ孔をディスクロータ側へ開口させてそれぞれ設けるとともに、一方の作用部のディスク周方向両側部にディスク半径方向の取付ボルト挿通孔をそれぞれ設け、該取付ボルト挿通孔にそれぞれ挿通した取付ボルトによりキャリパボディを車体に取り付けるラジアルマウント式ピストン対向型車両用ディスクブレーキが知られている。また、このようなラジアルマウント式のキャリパボディにおいて、シリンダ孔の中心と取付ボルト挿通孔とを最短で結ぶ最短部に対して、取付ボルト挿通孔の軸線方向長さの中心位置をディスク外周側に位置させることにより、シリンダ孔の変形を防止することが行われている（例えば、特許文献１参照。）。
特許第３９３４０９５号公報 As a disk brake for a vehicle, action parts connected by bridge parts on both sides of the disk rotor are arranged to face each other, and each action part is provided with a cylinder hole that opens a piston rotor side. There is a radial mount type piston facing vehicle disc brake for mounting a caliper body to a vehicle body by providing mounting bolt insertion holes in the disk radial direction on both sides of the disk in the circumferential direction of the working portion, and mounting bolts respectively inserted into the mounting bolt insertion holes. Are known. Further, in such a radial mount type caliper body, the center position of the axial length of the mounting bolt insertion hole is on the outer peripheral side of the disk with respect to the shortest portion connecting the center of the cylinder hole and the mounting bolt insertion hole. By making it position, deformation of a cylinder hole is performed (for example, refer to patent documents 1).
Japanese Patent No. 3934095

しかし、取付ボルト挿通孔の軸線方向長さの中心位置をディスク外周側に位置させると、必然的にキャリパボディを固定するための車体側のキャリパ取付部が必要以上に大型化することになり、製造コストの大幅な上昇を招くおそれがある。一方、キャリパボディのディスク内周側に取付ボルト挿通孔を形成した取付ボス部を突設することにより、キャリパ取付部を小型化できるが、この場合は、取付ボス部とキャリパ取付部との当接面がキャリパボディが受ける制動トルクに対してディスク内周側に配置されるため、当接面付近の剛性を高めなければならず、取付ボス部やキャリパ取付部を大型化させる必要が生じる。また、取付ボス部をキャリパボディから大きく突設させると、制動時に取付ボス部やキャリパ取付部が共振してブレーキ鳴きが発生しやすいという問題もあった。   However, if the center position of the axial length of the mounting bolt insertion hole is positioned on the outer peripheral side of the disk, the caliper mounting portion on the vehicle body side for inevitably fixing the caliper body will be unnecessarily large. There is a risk of a significant increase in manufacturing costs. On the other hand, the caliper mounting part can be reduced in size by projecting a mounting boss part with a mounting bolt insertion hole on the inner periphery of the caliper body, but in this case, the contact between the mounting boss part and the caliper mounting part Since the contact surface is arranged on the inner periphery side of the disk with respect to the braking torque received by the caliper body, the rigidity in the vicinity of the contact surface must be increased, and the mounting boss portion and the caliper mounting portion need to be enlarged. Further, when the mounting boss part is protruded largely from the caliper body, there is a problem that the brake noise is likely to occur due to the resonance of the mounting boss part and the caliper mounting part during braking.

そこで本発明は、キャリパボディやキャリパ取付部を大型化させることなく必要な剛性を確保し、ブレーキ鳴きの発生も抑えることができるラジアルマウント式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 Accordingly, an object of the present invention is to provide a radial mount type disc brake for a vehicle that can secure the necessary rigidity without increasing the size of the caliper body and the caliper mounting portion and can suppress the occurrence of brake squeal.

上記目的を達成するため、本発明のラジアルマウント式車両用ディスクブレーキは、ディスクロータを挟んで対向配置される一対の作用部をディスクロータの外周を跨ぐブリッジ部にて連結したキャリパボディの前記両作用部にピストンを収容するシリンダ孔をそれぞれ形成するとともに、一方の作用部のディスク周方向両側部にディスク半径方向の取付ボルト挿通孔を有する取付ボス部をディスク内周側に向けてそれぞれ突設し、前記取付ボルト挿通孔にそれぞれ挿通した取付ボルトにより前記キャリパボディを車体に取り付けるラジアルマウント式車両用ディスクブレーキにおいて、前記両取付ボルト挿通孔の軸線方向中心同士を結ぶ直線を前記シリンダ孔の軸線位置よりディスク内周側に配置するとともに、前記キャリパボディのディスク内周側面と前記取付ボス部のキャリパボディ中心側外周面との間に、リブ高さが、一方の作用部のシリンダ孔を設けた部分の外周面で最もディスク内周側に位置する部分（Ｅ１）から取付ボス部のディスク内周側端面とを結ぶ直線（Ｌ２）よりディスク内周側に突出しない範囲で形成された補強リブを設けたことを特徴としている。 In order to achieve the above object, a radial mount type vehicle disc brake according to the present invention includes a pair of caliper bodies in which a pair of action portions arranged opposite to each other with a disc rotor interposed therebetween are connected by a bridge portion straddling the outer periphery of the disc rotor. Cylinder holes for accommodating the pistons are formed in the working part, and mounting bosses with mounting bolt insertion holes in the disk radial direction are provided on both sides of the disk in the circumferential direction of one working part so as to project toward the inner peripheral side of the disk. In the radial mount type disc brake for mounting the caliper body to the vehicle body with the mounting bolts respectively inserted into the mounting bolt insertion holes, a straight line connecting the axial centers of the both mounting bolt insertion holes is an axis of the cylinder hole. The caliper body is disposed on the inner circumference side of the disc from the position. Between the click inner peripheral side and the caliper body center side outer peripheral surface of the mounting boss portion, a portion rib height, most positions in the disk circumferential side in the outer peripheral surface of the portion provided with the cylinder bore of one of the working portion A reinforcing rib formed in a range that does not protrude from the straight line (L2) from (E1) to the disk inner peripheral side end face of the mounting boss portion to the disk inner peripheral side is provided.

さらに、前記補強リブのリブ幅は、一方の作用部のシリンダ孔を設けた部分の外周面で最もディスク内周側に位置する部分（Ｅ１）のディスク軸線方向の外端（Ｅ２）と取付ボス部のディスク内周側の最外周部とを結ぶ直線（Ｌ３）より内部側で、前記摩擦パッドの着脱に干渉しない範囲に形成することが好ましい。また、前記キャリパボディはアルミ製であり、前記取付ボルトは鉄製であること、前記取付ボス部は、フロントフォークの下端に設けられたボトムケースから後方に突設したキャリパ取付部に取り付けられ、前記ボトムケースは鋳造にて製造されていることが好ましい。 Further, the rib width of the reinforcing rib is such that the outer end surface (E2) of the portion (E1) located closest to the inner periphery of the disc on the outer peripheral surface of the portion provided with the cylinder hole of one working portion and the mounting boss It is preferable to form it within a range that does not interfere with the attachment and detachment of the friction pad, on the inner side from the straight line (L3) connecting the outermost peripheral part of the inner part of the disk. Further, the caliper body is made of aluminum, the mounting bolt is made of iron, and the mounting boss portion is attached to a caliper mounting portion protruding rearward from a bottom case provided at a lower end of a front fork, The bottom case is preferably manufactured by casting .

本発明のラジアルマウント式車両用ディスクブレーキによれば、取付ボルト挿通孔を有する取付ボス部をシリンダ孔に対してディスク内周側に配置することにより、取付ボス部と車体側のキャリパ取付部との当接面をディスク内周側に位置させることができ、キャリパ取付部の小型化を図ることができる。また、補強リブの形状や配置をキャリパボディの構造に合わせて最適に設定することにより、ブレーキ鳴きも抑えることができる。特に、自動二輪車用の前輪用ディスクブレーキにおいては、通常はアルミ製のキャリパボディに対して鉄製で比較的重い取付ボルトを、キャリパボディが取り付けられるフロントフォークに近付けることができるので操舵フィーリングの向上も図れる。 According to the radial mount type vehicle disc brake of the present invention, the mounting boss portion and the caliper mounting portion on the vehicle body side are arranged by disposing the mounting boss portion having the mounting bolt insertion hole on the inner circumferential side of the disc with respect to the cylinder hole. Can be positioned on the inner peripheral side of the disk, and the caliper mounting portion can be downsized. In addition, brake noise can be suppressed by optimally setting the shape and arrangement of the reinforcing ribs according to the caliper body structure. In particular, in the front wheel disc brakes for motorcycles, usually improving the steering feeling since it is possible to bring the relatively heavy mounting bolts made of iron with respect to aluminum caliper body, the front fork caliper body is attached Can also be planned.

また、前記範囲内に補強リブを設けることにより、外観を損なわずに剛性を確保できるとともにブレーキ鳴きの発生も防止できる。   Further, by providing the reinforcing rib within the range, it is possible to ensure rigidity without impairing the appearance and to prevent the occurrence of brake squeal.

図１は本発明のラジアルマウント式車両用ディスクブレーキの一形態例を示すキャリパボディの正面図、図２は同じくキャリパボディの底面図、図３は図１のIII−III断面図、図４及び図５は本発明のラジアルマウント式車両用ディスクブレーキと従来のラジアルマウント式車両用ディスクブレーキとを比較して説明するためのもので、図４は本発明のラジアルマウント式車両用ディスクブレーキを自動二輪車の前輪用に用いた状態を示す正面図、図５は従来のラジアルマウント式車両用ディスクブレーキを自動二輪車の前輪用に用いた状態を示す正面図である。なお、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とし、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。   1 is a front view of a caliper body showing one embodiment of a radial mount type vehicle disc brake of the present invention, FIG. 2 is a bottom view of the caliper body, FIG. 3 is a sectional view taken along line III-III in FIG. FIG. 5 is a diagram for comparing and explaining a radial mount type vehicle disc brake of the present invention and a conventional radial mount type disc brake for a vehicle, and FIG. 4 shows an automatic operation of the radial mount type disc brake for a vehicle of the present invention. FIG. 5 is a front view showing a state in which a conventional radial mount type disc brake is used for a front wheel of a motorcycle. The arrow A is the direction of rotation of the disk rotor that rotates integrally with the front wheels when the vehicle moves forward, and the disk unloading side and disk unloading side described below are those when the vehicle moves forward.

本形態例に示すディスクブレーキ１は、フロントフォーク２の下端に設けられたボトムケース３から後方に突設したキャリパ取付部４に取り付けられるもので（図４参照）、前輪と一体に回転するディスクロータ５と、該ディスクロータ５の一側部で車体に取り付けられるキャリパボディ６と、ディスクロータ５の両側部に配設されるキャリパボディ６の作用部６ａ，６ｂ間に、ディスクロータ５を挟んで対向配置される摩擦パッド７，７とを備えている。さらに、車体外側に配置される一方の作用部６ａのディスク周方向両側部には、ディスク半径方向の取付ボス部６ｃ，６ｃが形成され、該取付ボス部６ｃにはディスク半径方向の取付ボルト挿通孔６ｄがそれぞれ形成され、該取付ボルト挿通孔６ｄに挿通した取付ボルト８を車体側に設けたキャリパ取付部４にねじ込むことにより、キャリパボディ６が車体に取り付けられている。   The disc brake 1 shown in this embodiment is attached to a caliper mounting portion 4 projecting rearward from a bottom case 3 provided at the lower end of a front fork 2 (see FIG. 4), and is a disc that rotates integrally with a front wheel. The disc rotor 5 is sandwiched between the rotor 5, the caliper body 6 attached to the vehicle body on one side of the disc rotor 5, and the action portions 6 a and 6 b of the caliper body 6 disposed on both sides of the disc rotor 5. Friction pads 7, 7 arranged opposite to each other. Further, mounting boss portions 6c, 6c in the disk radial direction are formed on both sides in the disk circumferential direction of one action portion 6a arranged outside the vehicle body, and mounting bolts in the disk radial direction are inserted into the mounting boss portion 6c. Each of the holes 6d is formed, and the caliper body 6 is mounted on the vehicle body by screwing the mounting bolt 8 inserted into the mounting bolt insertion hole 6d into the caliper mounting portion 4 provided on the vehicle body side.

キャリパボディ６は、一対の作用部６ａ，６ｂを、ディスクロータ５の外周側を跨ぐブリッジ部６ｅにて一体に連結したモノコック構造の４ポットピストン対向型に形成され、作用部６ａ，６ｂには、２個ずつのシリンダ孔６ｆが対向してそれぞれ形成され、各シリンダ孔６ｆ内にピストン９が軸線方向に移動可能な状態でそれぞれ収容され、シリンダ孔６ｆとピストン９との間には液圧室１０がそれぞれ画成されている。各作用部６ａ，６ｂの隣り合う液圧室１０は連通孔６ｇでそれぞれ連通され、キャリパボディ６のディスク回出側にはユニオン孔１１とブリューダ孔（図示せず）とが設けられ、ブリューダ孔にはブリューダスクリュ１２が螺着されている。   The caliper body 6 is formed in a monocoque 4-pot piston facing type in which a pair of action portions 6a and 6b are integrally connected by a bridge portion 6e straddling the outer peripheral side of the disc rotor 5, and the action portions 6a and 6b include Two cylinder holes 6f are formed to face each other, and the pistons 9 are respectively accommodated in the cylinder holes 6f so as to be movable in the axial direction. A hydraulic pressure is provided between the cylinder holes 6f and the pistons 9. Each chamber 10 is defined. The hydraulic chambers 10 adjacent to each of the action portions 6a and 6b are communicated with each other through a communication hole 6g, and a union hole 11 and a bleeder hole (not shown) are provided on the disk delivery side of the caliper body 6, and the bleeder hole A brewer screw 12 is screwed into the screw.

前記各ピストン９とディスクロータ５との間には、前記摩擦パッド７が配置されている。摩擦パッド７は、ディスクロータ５の側面に摺接するライニング７ａと、該ライニング７ａが貼着された金属製の裏板７ｂとからなっている。この摩擦パッド７は、裏板７ｂの上部中央に設けた吊下げ片にディスク軸方向のハンガーピン１３が挿通され、ディスクロータ５の両側部にディスク軸方向へ移動可能に吊持される。   The friction pad 7 is disposed between each piston 9 and the disk rotor 5. The friction pad 7 includes a lining 7a that is in sliding contact with the side surface of the disk rotor 5, and a metal back plate 7b to which the lining 7a is attached. The friction pad 7 is hung so as to be movable in the disk axial direction on both sides of the disk rotor 5 by inserting a hanger pin 13 in the disk axial direction through a suspension piece provided at the upper center of the back plate 7b.

前記取付ボス部６ｃのディスク内周側は、キャリパボディ６の底面（ディスク内周側面）よりディスク内周側に突出した状態で形成されるとともに、キャリパボディ６の上面（ディスク外周側面）には、取付ボルト挿通孔６ｄに挿通される取付ボルト８のボルト頭を収容する凹部６ｈが形成されている。取付ボルト挿通孔６ｄは、凹部６ｈの底面から取付ボス部６ｃのディスク内周側端面とにわたって形成されており、両取付ボルト挿通孔６ｄの軸線方向中心同士を結ぶ直線Ｌ１が、前記シリンダ孔６ｆの軸線Ｃ１の位置よりディスク内周側に位置するように配置されている。   The mounting boss portion 6c is formed on the inner peripheral side of the disc in a state of protruding from the bottom surface (disc inner peripheral side surface) of the caliper body 6 to the inner peripheral side of the disc, and on the upper surface (disc outer peripheral side surface) of the caliper body 6. A recess 6h that accommodates the bolt head of the mounting bolt 8 inserted through the mounting bolt insertion hole 6d is formed. The mounting bolt insertion hole 6d is formed from the bottom surface of the recess 6h to the inner peripheral end surface of the mounting boss 6c, and a straight line L1 connecting the axial centers of the both mounting bolt insertion holes 6d is the cylinder hole 6f. It is arranged so as to be located on the inner circumference side of the disk from the position of the axis C1.

また、ディスク内周側に突出した両取付ボス部６ｃのキャリパボディ中心側外周面とキャリパボディ６のディスク内周側面との間には、補強リブ６ｉがそれぞれ設けられている。この補強リブ６ｉは、図１及び図２に網掛けされた範囲に示すように、リブ高さは、一方の作用部６ａのシリンダ孔６ｆを設けた部分の外周面で最もディスク内周側に位置する部分Ｅ１から取付ボス部６ｃのディスク内周側端面６ｋとを結ぶ直線Ｌ２よりディスク内周側に突出しない範囲で形成されるとともに、リブ幅は、シリンダ孔６ｆを設けた部分の外周面で最もディスク内周側に位置する部分Ｅ１のディスク軸線方向の外端Ｅ２と取付ボス部６ｃのディスク内周側の最外周部６ｍとを結ぶ直線Ｌ３より内部側で、摩擦パッド７の着脱に干渉しない範囲に形成される。   Reinforcing ribs 6 i are respectively provided between the caliper body center outer peripheral surface of both mounting boss portions 6 c protruding to the inner peripheral side of the disc and the inner peripheral side surface of the caliper body 6. As shown in the shaded area in FIGS. 1 and 2, the reinforcing rib 6i has a rib height that is closest to the inner periphery of the disk on the outer peripheral surface of the portion where the cylinder hole 6f of the one action portion 6a is provided. The rib width is formed in a range that does not protrude from the straight line L2 connecting the position E1 to the disk inner peripheral end face 6k of the mounting boss 6c to the disk inner peripheral side, and the rib width is the outer peripheral surface of the portion provided with the cylinder hole 6f. The friction pad 7 is attached and detached on the inner side of the straight line L3 connecting the outer end E2 of the portion E1 located on the innermost peripheral side of the disc in the disc axial direction and the outermost peripheral portion 6m on the inner peripheral side of the mounting boss 6c. It is formed in a range that does not interfere.

このような補強リブ６ｉを設けることにより、取付ボス部６ｃをキャリパボディ６のディスク内周側面からディスク内周側に大きく突出させたときでも、取付ボス部６ｃを大径化することなく取付ボス部６ｃの剛性を確保することができるとともに、制動時の取付ボス部６ｃの共振を抑制してブレーキ鳴きの発生も抑えることができる。また、前記範囲内に補強リブ６ｉを形成することにより、外観を損なうことがない。   By providing such a reinforcing rib 6i, even when the mounting boss portion 6c is greatly protruded from the inner peripheral surface of the caliper body 6 toward the inner peripheral side of the disc, the mounting boss portion 6c is not increased in diameter. The rigidity of the portion 6c can be ensured, and the resonance of the mounting boss portion 6c during braking can be suppressed to suppress the occurrence of brake squeal. Further, by forming the reinforcing rib 6i within the above range, the appearance is not impaired.

さらに、取付ボス部６ｃをキャリパボディ６のディスク内周側面からディスク内周側に突出させて両取付ボルト挿通孔６ｄの軸線方向中心同士を結ぶ直線Ｌ１が、前記シリンダ孔６ｆの軸線Ｃ１の位置よりディスク内周側に位置するように配置したことにより、特に、自動二輪車のようなバーハンドル車両における操舵フィーリングを向上させることができる。   Further, a straight line L1 that protrudes the mounting boss 6c from the inner peripheral surface of the caliper body 6 toward the inner peripheral side of the caliper and connects the axial centers of both mounting bolt insertion holes 6d is the position of the axis C1 of the cylinder hole 6f. By arranging so as to be located closer to the inner periphery of the disc, it is possible to improve steering feeling particularly in a bar handle vehicle such as a motorcycle.

すなわち、図４及び図５（比較を容易にするため、各例における同一の構成要素には同一の符号を付している。）に示すように、ディスクロータ５及びキャリパボディ６の基本構成を同一とした場合で比較すると、取付ボルト挿通孔６ｄと該取付ボルト挿通孔６ｄに最寄りのシリンダ孔６ｆの軸線Ｃ１とをそれぞれ最短（取付ボルト挿通孔６ｄと直交）で結ぶ直線Ｌ４，Ｌ５，Ｌ６，Ｌ７からの取付ボルト挿通孔６ｄのディスク内周側端面までの距離Ａ，ａ及び取付ボルト８のボルト頭までの距離Ｂ，ｂは、図４に示す本形態例の場合にはＡ＞Ｂとなり、ディスク内周側の距離Ａが大きくなるのに対し、図５に示す従来例の場合にはａ＜ｂとなり、ディスク内周側の距離ａが小さくなっている。   That is, as shown in FIG. 4 and FIG. 5 (in order to facilitate comparison, the same components in each example are given the same reference numerals), the basic configuration of the disc rotor 5 and caliper body 6 is shown. When compared with the same case, the straight line L4, L5, L6 connecting the mounting bolt insertion hole 6d and the axis C1 of the nearest cylinder hole 6f to the mounting bolt insertion hole 6d by the shortest (perpendicular to the mounting bolt insertion hole 6d). , L7 from the mounting bolt insertion hole 6d to the inner peripheral end surface of the disk, and distances B, b from the mounting bolt 8 to the bolt head A> B in the case of this embodiment shown in FIG. Thus, while the distance A on the inner circumference side of the disk becomes larger, in the case of the conventional example shown in FIG. 5, a <b, and the distance a on the inner circumference side of the disk becomes smaller.

したがって、取付ボルト８の長さ（Ｌ８）が同一とすれば、取付ボルト８の重心Ｇは、本形態例では従来例に比べてディスク内周側に位置することになり、各重心Ｇとフロントフォークの中心線（ステアリングセンタ）との距離Ｄ，ｄは、従来例の距離ｄに比べて本形態例の距離Ｄの方が短くなる。したがって、一般にアルミで形成されるキャリパボディ６に対して重量が嵩む鉄製の取付ボルト８の重心Ｇがステアリングセンタに近くなることから、操舵性が向上して操舵フィーリングが良好なものとなる。加えて、取付ボス部６ｃを突出させることによってキャリパ取付部４の突出量を小さくすることができるので、ボトムケース３を鋳造にて製造する際の湯回り性が向上し、ボトムケース３の生産性を高めることができる。   Therefore, if the length (L8) of the mounting bolt 8 is the same, the center of gravity G of the mounting bolt 8 is positioned on the inner periphery side of the disk in the present embodiment as compared with the conventional example. The distances D and d with respect to the center line (steering center) of the fork are shorter in the distance D of the present embodiment than in the distance d of the conventional example. Therefore, since the center of gravity G of the iron mounting bolt 8 that is generally heavier than the caliper body 6 made of aluminum is close to the steering center, the steering performance is improved and the steering feeling is improved. In addition, since the protruding amount of the caliper mounting portion 4 can be reduced by protruding the mounting boss portion 6c, the hot water performance when the bottom case 3 is manufactured by casting is improved, and the bottom case 3 is produced. Can increase the sex.

なお、本発明のラジアルマウント式車両用ディスクブレーキは、上述の形態例で示した自動二輪車の前輪用だけに限るものではなく、自動二輪車の後輪用或いは４輪用のラジアルマウント式車両用ディスクブレーキにも適用でき、ピストン数も任意である。また、前記補強リブのリブ高さ並びにリブ幅も、ともに上述の形態例にとらわれるものではない。さらに、キャリパボディはモノコック構造ではなく、２つの作用部を締結ボルトで締結する分割構造でもよい。   The radial mount type vehicle disc brake of the present invention is not limited to the front wheel of the motorcycle shown in the above-described embodiment, but the rear mount or four wheel radial mount type vehicle disc for the motorcycle. It can also be applied to brakes, and the number of pistons is arbitrary. Further, the rib height and the rib width of the reinforcing rib are not limited to the above-described embodiments. Furthermore, the caliper body may have a split structure in which two action parts are fastened with fastening bolts instead of a monocoque structure.

本発明のラジアルマウント式車両用ディスクブレーキの一形態例を示すキャリパボディの正面図である。1 is a front view of a caliper body showing one embodiment of a radial mount type disk brake for a vehicle according to the present invention. 同じくキャリパボディの底面図である。It is a bottom view of a caliper body similarly. 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. 本発明のラジアルマウント式車両用ディスクブレーキを自動二輪車の前輪用に用いた状態を示す正面図である。1 is a front view showing a state in which a disc brake for a radial mount type vehicle according to the present invention is used for a front wheel of a motorcycle. 従来のラジアルマウント式車両用ディスクブレーキを自動二輪車の前輪用に用いた状態を示す正面図である。FIG. 6 is a front view showing a state in which a conventional radial mount type vehicle disc brake is used for a front wheel of a motorcycle.

符号の説明Explanation of symbols

１…ディスクブレーキ、２…フロントフォーク、３…ボトムケース、４…キャリパ取付部、５…ディスクロータ、６…キャリパボディ、６ａ，６ｂ…作用部、６ｃ…取付ボス部、６ｄ…取付ボルト挿通孔、６ｅ…ブリッジ部、６ｆ…シリンダ孔、６ｇ…連通孔、６ｈ…凹部、６ｉ…補強リブ、６ｋ…ディスク内周側端面、６ｍ…取付ボス部のディスク内周側の最外周部、７…摩擦パッド、７ａ…ライニング、７ｂ…裏板、８…取付ボルト、９…ピストン、１０…液圧室、１１…ユニオン孔、１２……ブリューダスクリュ、１３…ハンガーピン   DESCRIPTION OF SYMBOLS 1 ... Disc brake, 2 ... Front fork, 3 ... Bottom case, 4 ... Caliper mounting part, 5 ... Disc rotor, 6 ... Caliper body, 6a, 6b ... Action part, 6c ... Mounting boss part, 6d ... Mounting bolt insertion hole , 6e ... bridge portion, 6f ... cylinder hole, 6g ... communication hole, 6h ... recess, 6i ... reinforcing rib, 6k ... disk inner peripheral side end surface, 6m ... outermost peripheral portion on the inner peripheral side of the mounting boss portion, 7 ... Friction pad, 7a ... Lining, 7b ... Back plate, 8 ... Mounting bolt, 9 ... Piston, 10 ... Hydraulic chamber, 11 ... Union hole, 12 ... Breuder screw, 13 ... Hanger pin

Claims (4)

ディスクロータを挟んで対向配置される一対の作用部をディスクロータの外周を跨ぐブリッジ部にて連結したキャリパボディの前記両作用部にピストンを収容するシリンダ孔をそれぞれ形成するとともに、一方の作用部のディスク周方向両側部にディスク半径方向の取付ボルト挿通孔を有する取付ボス部をディスク内周側に向けてそれぞれ突設し、前記取付ボルト挿通孔にそれぞれ挿通した取付ボルトにより前記キャリパボディを車体に取り付けるラジアルマウント式車両用ディスクブレーキにおいて、前記両取付ボルト挿通孔の軸線方向中心同士を結ぶ直線（Ｌ１）を前記シリンダ孔の軸線位置よりディスク内周側に配置するとともに、前記キャリパボディのディスク内周側面と前記取付ボス部のキャリパボディ中心側外周面との間に、リブ高さが、一方の作用部のシリンダ孔を設けた部分の外周面で最もディスク内周側に位置する部分（Ｅ１）から取付ボス部のディスク内周側端面とを結ぶ直線（Ｌ２）よりディスク内周側に突出しない範囲で形成された補強リブを設けたことを特徴とするラジアルマウント式車両用ディスクブレーキ。 A cylinder hole that accommodates a piston is formed in each of the two action parts of the caliper body in which a pair of action parts arranged opposite to each other across the disk rotor are connected by a bridge part that straddles the outer periphery of the disk rotor, and one action part Mounting bosses having mounting bolt insertion holes in the disk radial direction on both sides of the disk in the circumferential direction of the disk project toward the inner peripheral side of the disk, and the caliper body is mounted on the vehicle body by mounting bolts inserted through the mounting bolt insertion holes. In the radial mount type vehicle disc brake to be mounted on the disc, the straight line (L1) connecting the axial centers of the two mounting bolt insertion holes is arranged on the inner peripheral side of the disc from the axial position of the cylinder hole, and the disc of the caliper body between the inner peripheral side and the caliper body center side outer peripheral surface of the mounting boss portion, Li The disc is higher than the straight line (L2) connecting the portion (E1) located on the innermost peripheral side of the disc on the outer peripheral surface of the portion provided with the cylinder hole of one working portion and the inner peripheral side end surface of the mounting boss portion. A radial mount type vehicle disc brake, comprising a reinforcing rib formed so as not to protrude toward the inner peripheral side . 前記補強リブのリブ幅は、一方の作用部のシリンダ孔を設けた部分の外周面で最もディスク内周側に位置する部分（Ｅ１）のディスク軸線方向の外端（Ｅ２）と取付ボス部のディスク内周側の最外周部とを結ぶ直線（Ｌ３）より内部側で、前記摩擦パッドの着脱に干渉しない範囲に形成されることを特徴とする請求項１記載のラジアルマウント式車両用ディスクブレーキ。 The rib width of the reinforcing rib is such that the outer end surface (E2) of the portion (E1) located closest to the inner periphery of the disc on the outer peripheral surface of the portion provided with the cylinder hole of one working portion and the mounting boss portion. 2. The radial mount type vehicle disc brake according to claim 1, wherein the disc brake is formed in a range not interfering with the attachment and detachment of the friction pad, on the inner side from the straight line (L <b> 3) connecting the outermost peripheral portion on the disc inner periphery side. . 前記キャリパボディはアルミ製であり、前記取付ボルトは鉄製であることを特徴とする請求項１又は２記載のラジアルマウント式車両用ディスクブレーキ。 3. The radial mount type vehicle disc brake according to claim 1, wherein the caliper body is made of aluminum, and the mounting bolt is made of iron . 前記取付ボス部は、フロントフォークの下端に設けられたボトムケースから後方に突設したキャリパ取付部に取り付けられ、前記ボトムケースは鋳造にて製造されていることを特徴とする請求項１又は２又は３記載のラジアルマウント式車両用ディスクブレーキ。 The said mounting boss | hub part is attached to the caliper mounting part which protruded back from the bottom case provided in the lower end of the front fork, and the said bottom case is manufactured by casting. Or a radial brake disc brake according to 3 .
JP2008107453A 2008-04-17 2008-04-17 Disc brake for radial mount type vehicle Active JP4818307B2 (en)

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