JP3798564B2 - Disc brake - Google Patents

Disc brake Download PDF

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Publication number
JP3798564B2
JP3798564B2 JP01216099A JP1216099A JP3798564B2 JP 3798564 B2 JP3798564 B2 JP 3798564B2 JP 01216099 A JP01216099 A JP 01216099A JP 1216099 A JP1216099 A JP 1216099A JP 3798564 B2 JP3798564 B2 JP 3798564B2
Authority
JP
Japan
Prior art keywords
rotor
peripheral side
disk rotor
shim plate
disc brake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP01216099A
Other languages
Japanese (ja)
Other versions
JP2000205311A (en
Inventor
浩平 大野
公廣 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Hosei Brake Industry Co Ltd
Original Assignee
Toyota Motor Corp
Hosei Brake Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp, Hosei Brake Industry Co Ltd filed Critical Toyota Motor Corp
Priority to JP01216099A priority Critical patent/JP3798564B2/en
Publication of JP2000205311A publication Critical patent/JP2000205311A/en
Application granted granted Critical
Publication of JP3798564B2 publication Critical patent/JP3798564B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【0001】
【産業上の利用分野】
本発明は、例えば車両を制動するためなどに用いられるディスクブレーキに関する。
【0002】
【従来の技術】
従来から、この種の装置としては、ディスクロータに押し付ける摩擦パッドの裏板背面にシム板を備え、裏板の側端部に一対のストッパ面を離間して設けるとともに、シム板に、一対のストッパ面の間にてディスクロータ側に向けて突出し摩擦パッドの裏板に係止されるとともに側部にてストッパ面に当接する係止部を形成したものがあった。この場合、例えば実開平4−127437号公報に示されているように、シム板の係止部の先端にストッパ面に向けて突出した爪片を形成し、同爪片によって、摩擦パッドのシムに対するディスクロータの回転方向の変位を弾性的に規制するようにしたものもあった。
【0003】
【発明が解決しようとする課題】
しかし、上記の前者の従来装置においては、ディスクロータの制動時に摩擦パッドがディスクロータに引きずられてシム板に対しディスクロータの回転方向に変位したとき、ストッパ面がシム板の係止部の側部全体に当接していたため、同係止部には基端部に集中的に応力が加わっていた。したがって、同係止部の耐久性が低いという問題があった。一方、上記の後者の従来装置においては、係止部の先端に爪片を形成していたため、構成が複雑であり、コストが高いという問題があった。
【0004】
【発明の概要】
本発明は上記問題に対処するためになされたものであり、その目的は、簡単かつ安価な構成で耐久性が高いシム板を備えたディスクブレーキを提供することにある。
【0005】
上記目的を達成するため、本発明は、ディスクロータに押し付けられる摩擦パッドの裏板のディスクロータ外周側と内周側に同ディスクロータの回転方向に離間して位置する一対のストッパ面をそれぞれ形成して、前記裏板の背面に前記ディスクロータの回転方向に相対変位可能に密着して組付けたシム板のディスクロータ外周側と内周側に同ディスクロータ側に向けてそれぞれ突出して形成した係止部をその両側にて前記各一対のストッパ面に当接するように組付けたディスクブレーキにおいて、前記シム板の各係止部の基端部分が前記裏板の各ストッパ面に当接しないように基端部分の前記ストッパ面に対向する部位又は同基端部分に対向する前記ストッパ面の部位に切り欠きを設けたことを特徴とするディスクブレーキを提供するものである。
【0006】
上記のように構成した本発明によるディスクブレーキにおいては、摩擦パッドがディスクロータに引きずられてシム板に対しディスクロータの回転方向に変位したとき、シム板の各係止部がその先端部にて摩擦パッドの裏板に形成したストッパ面との部分的な当接によりディスクロータの回転方向の力を受ける。したがって、応力が全体的に分散して加わることになるため、同シム板の各係止部の耐久性が向上する。また、この場合、上記の各ストッパ面に対する各係止部の基端部分にての当接をなくすために、単に切り欠きを設けるだけであるため、従来のように複雑な構成の爪片等を設ける必要がなく、簡単な構成により安価に実施できる利点がある。
【0008】
【発明の実施の形態】
a.第1の実施形態
以下、本発明の第1の実施形態を図面を用いて説明する。図1は同実施形態に係るディスクブレーキの摩擦パッド10及びシム板20の背面図であり、図2は図1の2−2線に沿って見た縦断面図である。
【0009】
摩擦パッド10は、このディスクブレーキのディスクロータとしてのディスクロータ30の両面側にそれぞれ配設されて、図示しない押圧部材によりディスクロータ30に押し付けられてディスクロータ30の回転を制動するものである。摩擦パッド10は、ディスクロータ30に押し付けられるライニング11と、ライニング11の背面に接合された裏板12とを備えている。裏板12のディスクロータ30外周側及び内周側の各側端部には、それぞれディスクロータ30の回転方向にて対向した各一対のストッパ面12a,12a,12b,12bが形成されている。
【0010】
シム板20は、裏板12の背面に密着して配設されるものであり、周縁部にそれぞれディスクロータ30側に向けて突出した係止部20a,20b,20bを形成して、同各係止部20a,20b,20bにより裏板12に係止されている。係止部20aは、図3に詳細に示すように、裏板12の一対のストッパ面12a,12aの間に配設されて、摩擦パッド10がシム板20に対してディスクロータ30の回転方向に変位したとき、両側の側部にてそれぞれ各ストッパ面12a,12aに当接するようになっている。また、係止部20aの基端部の両側の側部には、回避手段としての切り欠き20a1,20a1がそれぞれ形成されている。一対の係止部20b,20bは、裏板12の一対のストッパ面12b,12bの各内側位置にそれぞれ配設されて、上記摩擦パッド10の変位時に、各外側の側部にて各ストッパ面12b,12bに当接するようになっている。
【0011】
上記のように構成したこのディスクブレーキにおいては、ディスクロータ30の制動時、摩擦パッド10がディスクロータ30に引きずられてシム板20に対しディスクロータ30の回転方向に変位すると、同変位方向側のストッパ面12aがシム板20の係止部20aの側部に当接して同変位を規制する。このとき、同係止部20aの基端部の両側の側部にそれぞれ切り欠き20a1,20a1が形成されているため、各ストッパ面12a,12aは、係止部20aの基端部に当接することなく、係止部20aの先端部のみに当接する。したがって、係止部20aは先端部にてディスクロータ30の回転方向の力を受けることになるため、同係止部20aに加わる応力は同係止部20aの全体に分散して加わることになり、係止部20aの耐久性が高く保たれる。このように、単に係止部20aに切り欠き20a1,20a1を設けたという簡単かつ安価な構成により、シム板20の耐久性が高く保たれている。
【0012】
b.第2の実施形態
次に、本発明の第2の実施形態を図面を用いて説明する。図4は、同実施形態に係るディスクブレーキの摩擦パッド10及びシム板20の拡大上側側面図である。同実施形態は、回避手段として、前記第1の実施形態にて採用したシム板20の係止部20aの切り欠き20a1,20a1に代えて、裏板12のストッパ面12a,12aのシム板20側の端部にそれぞれ形成した切り欠き12a1,12a1を採用したものである。
【0013】
上記のように構成したこの第2の実施形態に係るディスクブレーキにおいては、摩擦パッド10がシム板20に対しディスクロータ30の回転方向に変位したとき、各ストッパ面12a,12aは、係止部20aの基端部に当接することなく、係止部20aの先端部のみに当接する。したがって、前記第1の実施形態における場合と同様に、簡単かつ安価な構成でシム板20の耐久性が高く保たれる。
【0014】
なお、前記各実施形態においては、裏板12のストッパ面12a,12a,12b,12b及びシム板20の係止部20a,20b,20bのうちで、ディスクロータ30の外周側のストッパ面12a,12a又は係止部20aに、回避手段としての切り欠き12a1,12a1,20a1,20a1を形成するようにした。しかし、ディスクロータ30の内周側のストッパ面12b,12b又は係止部20b,20bに、回避手段としての切り欠きを形成するようにしてもよい。
【図面の簡単な説明】
【図1】本発明の第1の実施形態に係るディスクブレーキの摩擦パッド及びシム板の背面図である。
【図2】図1の2−2線に沿って見た縦断面図である。
【図3】前記摩擦パッド及びシム板の拡大上側側面図である。
【図4】本発明の第2の実施形態に係るディスクブレーキの摩擦パッド及びシム板の拡大上側側面図である。
【符号の説明】
10…摩擦パッド、12…裏板、12a…ストッパ面、12a1,20a1…切り欠き、20…シム板、20a…係止部、30…ディスク。
[0001]
[Industrial application fields]
The present invention relates to a disc brake used for braking a vehicle, for example.
[0002]
[Prior art]
Conventionally, as this type of device, a shim plate is provided on the back surface of the friction pad that is pressed against the disk rotor, and a pair of stopper surfaces are provided apart from each other at the side end portion of the back plate. There is one in which a locking portion that protrudes toward the disk rotor side between the stopper surfaces and is locked to the back plate of the friction pad and that contacts the stopper surface at the side portion is formed. In this case, for example, as shown in Japanese Utility Model Laid-Open No. 4-127437, a claw piece protruding toward the stopper surface is formed at the tip of the locking portion of the shim plate, and the shim of the friction pad is formed by the claw piece. Some disc rotors elastically restrict the displacement in the rotational direction of the disk rotor.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional device, when the friction pad is dragged by the disk rotor during the braking of the disk rotor and displaced in the rotation direction of the disk rotor with respect to the shim plate, the stopper surface is located on the side of the locking portion of the shim plate. Since it was in contact with the entire portion, stress was intensively applied to the base end portion of the locking portion. Therefore, there is a problem that the durability of the locking portion is low. On the other hand, in the latter conventional apparatus, since the claw piece is formed at the tip of the locking portion, there is a problem that the configuration is complicated and the cost is high.
[0004]
SUMMARY OF THE INVENTION
The present invention has been made to address the above-described problems, and an object of the present invention is to provide a disc brake including a shim plate having high durability with a simple and inexpensive configuration.
[0005]
In order to achieve the above object, according to the present invention, a pair of stopper surfaces that are spaced apart in the rotational direction of the disk rotor are formed on the disk rotor outer peripheral side and inner peripheral side of the back plate of the friction pad pressed against the disk rotor, respectively. Then, the shim plate assembled in close contact with the back surface of the back plate so as to be relatively displaceable in the rotational direction of the disc rotor is formed so as to project toward the disc rotor side on the disc rotor outer peripheral side and inner peripheral side, respectively. In the disc brake assembled so that the locking portions are in contact with the pair of stopper surfaces on both sides thereof, the base end portions of the locking portions of the shim plate are in contact with the stopper surfaces of the back plate. also provides a disc brake, characterized in that a notch portion of the stopper surface opposed to sites or Domototan portion opposed to the stopper surface of the proximal portion so as not to It is.
[0006]
In the disc brake according to the present invention configured as described above, when the friction pad is dragged by the disc rotor and displaced in the direction of rotation of the disc rotor with respect to the shim plate, each locking portion of the shim plate is at its tip. A force in the rotational direction of the disk rotor is received by partial contact with the stopper surface formed on the back plate of the friction pad. Therefore, since stress is dispersed and applied as a whole, the durability of each locking portion of the shim plate is improved. Also, in this case, in order to eliminate the abutment at the base end portion of each locking portion with respect to each of the stopper surfaces, a notch piece having a complicated structure as in the prior art is simply provided. There is an advantage that it can be implemented inexpensively with a simple configuration.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
a. First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a rear view of the friction pad 10 and shim plate 20 of the disc brake according to the embodiment, and FIG. 2 is a longitudinal sectional view taken along line 2-2 of FIG.
[0009]
The friction pads 10 are respectively disposed on both sides of a disk rotor 30 as a disk rotor of the disk brake, and are pressed against the disk rotor 30 by a pressing member (not shown) to brake the rotation of the disk rotor 30. The friction pad 10 includes a lining 11 that is pressed against the disk rotor 30, and a back plate 12 that is joined to the back surface of the lining 11. A pair of stopper surfaces 12 a, 12 a, 12 b, and 12 b that are opposed to each other in the rotational direction of the disk rotor 30 are formed on the side end portions on the outer peripheral side and inner peripheral side of the back plate 12.
[0010]
The shim plate 20 is disposed in close contact with the back surface of the back plate 12, and is formed with locking portions 20a, 20b, and 20b that protrude toward the disk rotor 30 at the periphery, respectively. The back plate 12 is locked by the locking portions 20a, 20b, and 20b. As shown in detail in FIG. 3, the engaging portion 20 a is disposed between the pair of stopper surfaces 12 a and 12 a of the back plate 12, and the friction pad 10 rotates in the rotational direction of the disc rotor 30 with respect to the shim plate 20. Is displaced to the stopper surfaces 12a, 12a at the side portions on both sides. Further, notches 20a1 and 20a1 as avoiding means are formed on both sides of the base end portion of the locking portion 20a. The pair of locking portions 20b and 20b are respectively disposed at the respective inner positions of the pair of stopper surfaces 12b and 12b of the back plate 12, and when the friction pad 10 is displaced, the respective stopper surfaces at the respective outer side portions. 12b, 12b abuts.
[0011]
In this disc brake configured as described above, when the disc rotor 30 is braked, if the friction pad 10 is dragged by the disc rotor 30 and displaced with respect to the shim plate 20 in the rotational direction of the disc rotor 30, the disc brake 30 is moved in the same direction. The stopper surface 12a abuts against the side portion of the locking portion 20a of the shim plate 20 to restrict the displacement. At this time, since the notches 20a1 and 20a1 are formed on both side portions of the base end portion of the locking portion 20a, the stopper surfaces 12a and 12a abut against the base end portion of the locking portion 20a. Without contact, only the tip of the locking portion 20a is abutted. Therefore, since the locking portion 20a receives the force in the rotational direction of the disk rotor 30 at the tip portion, the stress applied to the locking portion 20a is distributed and applied to the entire locking portion 20a. The durability of the locking portion 20a is kept high. As described above, the durability of the shim plate 20 is kept high by the simple and inexpensive configuration in which the notches 20a1 and 20a1 are simply provided in the locking portion 20a.
[0012]
b. Second Embodiment Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is an enlarged upper side view of the friction pad 10 and the shim plate 20 of the disc brake according to the embodiment. In this embodiment, as avoiding means, the shim plate 20 of the stopper surfaces 12a and 12a of the back plate 12 is used instead of the notches 20a1 and 20a1 of the locking portion 20a of the shim plate 20 employed in the first embodiment. The notches 12a1 and 12a1 formed at the end portions on the side are employed.
[0013]
In the disc brake according to the second embodiment configured as described above, when the friction pad 10 is displaced in the rotational direction of the disc rotor 30 with respect to the shim plate 20, the stopper surfaces 12a and 12a are provided with locking portions. It abuts only on the distal end portion of the locking portion 20a without abutting on the base end portion of 20a. Therefore, as in the case of the first embodiment, the durability of the shim plate 20 is kept high with a simple and inexpensive configuration.
[0014]
In each of the above embodiments, the stopper surfaces 12a, 12a, 12b, 12b of the back plate 12 and the stopper portions 12a, 20b, 20b of the shim plate 20 on the outer peripheral side of the disc rotor 30 are provided. Notches 12a1, 12a1, 20a1, and 20a1 as avoiding means are formed in 12a or the locking portion 20a. However, notches as avoiding means may be formed in the stopper surfaces 12b, 12b or the locking portions 20b, 20b on the inner peripheral side of the disk rotor 30.
[Brief description of the drawings]
FIG. 1 is a rear view of a friction pad and a shim plate of a disc brake according to a first embodiment of the present invention.
2 is a longitudinal sectional view taken along line 2-2 of FIG.
FIG. 3 is an enlarged upper side view of the friction pad and shim plate.
FIG. 4 is an enlarged upper side view of a friction pad and shim plate of a disc brake according to a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Friction pad, 12 ... Back plate, 12a ... Stopper surface, 12a1, 20a1 ... Notch, 20 ... Shim plate, 20a ... Locking part, 30 ... Disc.

Claims (1)

ディスクロータに押し付けられる摩擦パッドの裏板のディスクロータ外周側と内周側に同ディスクロータの回転方向に離間して位置する一対のストッパ面をそれぞれ形成して、前記裏板の背面に前記ディスクロータの回転方向に相対変位可能に密着して組付けたシム板のディスクロータ外周側と内周側に同ディスクロータ側に向けてそれぞれ突出して形成した係止部をその両側にて前記各一対のストッパ面に当接するように組付けたディスクブレーキにおいて、
前記シム板の各係止部の基端部分が前記裏板の各ストッパ面に当接しないように基端部分の前記ストッパ面に対向する部位又は同基端部分に対向する前記ストッパ面の部位に切り欠きを設けたことを特徴とするディスクブレーキ。
Forming a pair of stopper surfaces located at a distance from each other in the disk rotor outer peripheral side and inner peripheral side of the back plate of the friction pad is pressed against the disc rotor in the rotational direction of the disk rotor respectively, the disk on the back of the back plate The shim plates that are assembled in close contact with each other so as to be relatively displaceable in the rotational direction of the rotor are provided with locking portions formed on the outer peripheral side and the inner peripheral side of the shim plate so as to protrude toward the disk rotor side. in disc brake assembly so as to abut against the stop surface,
The base end portion of each locking portion of the shim plate is not in contact with each stopper surface of the back plate, and the portion of the base end portion that faces the stopper surface or the stopper surface that faces the base end portion . A disc brake characterized by notches in the part .
JP01216099A 1999-01-20 1999-01-20 Disc brake Expired - Fee Related JP3798564B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP01216099A JP3798564B2 (en) 1999-01-20 1999-01-20 Disc brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP01216099A JP3798564B2 (en) 1999-01-20 1999-01-20 Disc brake

Publications (2)

Publication Number Publication Date
JP2000205311A JP2000205311A (en) 2000-07-25
JP3798564B2 true JP3798564B2 (en) 2006-07-19

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JP01216099A Expired - Fee Related JP3798564B2 (en) 1999-01-20 1999-01-20 Disc brake

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5855398B2 (en) * 2011-09-13 2016-02-09 曙ブレーキ工業株式会社 Disc brake pad assembly
JP5855397B2 (en) 2011-09-13 2016-02-09 曙ブレーキ工業株式会社 Disc brake pad assembly
DE102011118313B4 (en) * 2011-11-11 2013-09-26 Wabco Radbremsen Gmbh DISC BRAKE, ESPECIALLY FOR COMMERCIAL VEHICLES, AS WELL AS BRAKE PAD AND PRESSURE PLATE AS SEPARATE COMPONENTS FOR SUCH A DISC BRAKE
DE102011118314B4 (en) * 2011-11-11 2013-09-26 Wabco Radbremsen Gmbh DISC BRAKE, ESPECIALLY FOR COMMERCIAL VEHICLES, BRAKE PAD AND PRESSURE PLATE AS SEPARATE COMPONENTS FOR SUCH A DISC BRAKE

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