JPS6325385Y2 - - Google Patents
Info
- Publication number
- JPS6325385Y2 JPS6325385Y2 JP1983131784U JP13178483U JPS6325385Y2 JP S6325385 Y2 JPS6325385 Y2 JP S6325385Y2 JP 1983131784 U JP1983131784 U JP 1983131784U JP 13178483 U JP13178483 U JP 13178483U JP S6325385 Y2 JPS6325385 Y2 JP S6325385Y2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- insulator
- tip
- resin
- plate
- 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
Links
- 239000012212 insulator Substances 0.000 claims description 29
- 239000011347 resin Substances 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
- Braking Arrangements (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案はデイスクブレーキに使用される樹脂
ピストンの補強部材に関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a reinforcing member for a resin piston used in a disc brake.
従来、デイスクブレーキのパツドを押動する樹
脂ピストンは先端部より摩擦熱が伝達しにくいよ
うに、先端部にインシユレータを嵌合したものが
有るが、制動時の回転トルクの吸収に際し、樹脂
ピストン先端外周縁部にねじりモーメントが作用
し、クラツクの発生、またインシユレータとパツ
ド裏板の間に砂等が入り込んでインシユレータが
摩滅し、パツドの偏摩耗を生起する恐れがある。
Conventionally, the resin piston that pushes the pads of disc brakes has an insulator fitted to the tip so that frictional heat is less likely to be transferred from the tip. A torsional moment acts on the outer peripheral edge, which may cause cracks, and sand or the like may enter between the insulator and the back plate of the pad, causing wear on the insulator and uneven wear of the pad.
〔考案の目的〕
本考案は上記の点に鑑みなされたもので、樹脂
ピストンの先端部を補強し、制動時クラツクの生
じない樹脂ピストンを提供するにある。[Purpose of the invention] The present invention has been made in view of the above points, and the object is to provide a resin piston which has a reinforced tip portion and which does not cause cracks during braking.
前記の目的を達成するため、本考案において
は、デイスク両面に対向して配置した一対の摩擦
パツドを跨ぐキヤリパの作動部に、先端部にピス
トン径より小径の嵌合溝部を形成してインシユレ
ータを嵌合した樹脂ピストンを備えた車両用デイ
スクブレーキ装置において、インシユレータ前面
に密着し、パツトの裏板に当接する板状のインシ
ユレータ保護部と、前記嵌合溝部よりピストン軸
方向でピストンシール前方まで延出し、かつピス
トン先端側外周部に密着嵌合する周状のピストン
補強部とを一体形成したことを特徴とする。
In order to achieve the above object, in the present invention, a fitting groove portion having a smaller diameter than the piston diameter is formed at the tip of the actuating portion of the caliper that straddles a pair of friction pads arranged opposite to each other on both surfaces of the disk, thereby forming an insulator. In a vehicle disc brake device equipped with fitted resin pistons, there is a plate-shaped insulator protection part that is in close contact with the front surface of the insulator and comes into contact with the back plate of the parts, and a plate-shaped insulator protection part that extends from the fitting groove part to the front of the piston seal in the piston axial direction. It is characterized by integrally forming a circumferential piston reinforcing portion that protrudes from the piston and tightly fits into the outer peripheral portion of the tip end of the piston.
以下、本考案の実施例を図面に基いて説明す
る。デイスク１は車輪と一体に回転できるように
車軸に設けられており、このデイスク１をキヤリ
パ２が外周から跨いでいる。キヤリパ２はデイス
ク１の片側近傍で車体に固定されたブラケツト３
に、デイスク軸方向に螺着された一対の支持ボル
ト４にスリーブ５を介して摺動自在に設けられ、
デイスク軸方向に移動可能となつている。そして
デイスク１の両側にはパツド６，７が配置され、
このそれぞれの裏板６ａ，７ａをキヤリパ２に設
けた一対のハンガーピン８に挿通し、デイスク軸
方向に移動可能に吊持されている。キヤリパ２は
このパツド６，７およびデイスク１を跨ぐブリツ
ジ部２ａと、デイスク１の一側に配置されパツド
６を押動する樹脂ピストン９を収納した単一のシ
リンダ１０を有する作動部２ｂと、デイスク１の
他側に配置されパツド７を押動する反力片２ｃを
有する反作動部２ｄとからなつている。
Embodiments of the present invention will be described below with reference to the drawings. A disk 1 is provided on an axle so that it can rotate together with the wheel, and a caliper 2 straddles the disk 1 from the outer periphery. The caliper 2 is attached to a bracket 3 fixed to the vehicle body near one side of the disk 1.
is slidably provided via a sleeve 5 to a pair of support bolts 4 screwed in the disk axial direction,
It is movable in the direction of the disk axis. Pads 6 and 7 are arranged on both sides of the disk 1,
The respective back plates 6a, 7a are inserted through a pair of hanger pins 8 provided on the caliper 2, and suspended so as to be movable in the disk axial direction. The caliper 2 has a bridge portion 2a spanning the pads 6, 7 and the disk 1, and an operating portion 2b having a single cylinder 10 housing a resin piston 9 disposed on one side of the disk 1 and pushing the pad 6. It consists of a reaction part 2d having a reaction force piece 2c disposed on the other side of the disk 1 and pushing the pad 7.
前記樹脂ピストン９の先端内周に形成された嵌
合溝部１１には、アスベスト系のインシユレータ
１２が嵌合され、さらに、該ピストン９の先端に
補強部材１３が嵌着されている。この補強部材１
３は、例えばステンレス等の合成を有する材料か
らなり、インシユレータ１２の前面に密着する板
状のインシユレータ保護部１４と、樹脂ピストン
９先端の外周縁部に、インシユレータ嵌合溝部よ
りピストン底部方向に形成した周溝１５に密着嵌
合するインシユレータ保護部１４より厚肉の周状
のピストン補強部１６とを有し、インシユレータ
保護部１４がパツド６の裏板６ａに当接するよう
に設けられている。尚、ピストン補強部１６より
ピストン底部方向のシリンダ１０内周には、樹脂
ピストン９の外周面との間で油密を保持するた
め、ピストンシール１７が取付けられている。 An asbestos-based insulator 12 is fitted into a fitting groove 11 formed on the inner periphery of the tip of the resin piston 9, and a reinforcing member 13 is fitted to the tip of the piston 9. This reinforcing member 1
3 is made of a synthetic material such as stainless steel, and is formed on the plate-shaped insulator protection part 14 that is in close contact with the front surface of the insulator 12, and on the outer peripheral edge of the tip of the resin piston 9, extending from the insulator fitting groove toward the bottom of the piston. It has a circumferential piston reinforcing part 16 that is thicker than the insulator protection part 14 and tightly fits into the circumferential groove 15, and the insulator protection part 14 is provided so as to abut against the back plate 6a of the pad 6. A piston seal 17 is attached to the inner periphery of the cylinder 10 toward the bottom of the piston from the piston reinforcing portion 16 in order to maintain oil tightness with the outer periphery of the resin piston 9.
本考案の補強部材１３は以上のように構成され
ていて、制動時マスタシリンダ（図示せず）から
の圧油がシリンダ１０内に導入され、樹脂ピスト
ン９が図において左方へ押動し、インシユレータ
１２及び補強部材１３を介してパツド６をデイス
ク１に摩擦係合させて制動作用を行うが、補強部
材１３の周状のピストン補強部１６にて樹脂ピス
トン９の先端外周縁部に作用するねじりモーメン
トを受けて、樹脂ピストン９への応力を小さく
し、ピストンシール１７の機能を損うことなく、
樹脂ピストン９先端部のクラツクの発生を有効に
防止し得る。 The reinforcing member 13 of the present invention is constructed as described above, and during braking, pressure oil from the master cylinder (not shown) is introduced into the cylinder 10, and the resin piston 9 is pushed to the left in the figure. Braking action is performed by frictionally engaging the pad 6 with the disk 1 via the insulator 12 and the reinforcing member 13, and the circumferential piston reinforcing portion 16 of the reinforcing member 13 acts on the outer peripheral edge of the tip of the resin piston 9. In response to the torsional moment, the stress on the resin piston 9 is reduced, without impairing the function of the piston seal 17.
The occurrence of cracks at the tip of the resin piston 9 can be effectively prevented.
また、インシユレータ１２とパツド裏板６ａの
間に補強部材１３のインシユレータ保護部１４が
インシユレータ１２と密着して配設されるので、
砂等が入り込んでもインシユレータ１２は摩滅す
ることがない。 Moreover, since the insulator protection part 14 of the reinforcing member 13 is disposed between the insulator 12 and the pad back plate 6a in close contact with the insulator 12,
Even if sand or the like gets in, the insulator 12 will not be worn out.
本考案は、以上説明した如く、インシユレータ
を装着した樹脂ピストンにインシユレータ前面に
密着し、パツドの裏板に当接する板状のインシユ
レータ保護部と、インシユレータの嵌合溝部より
ピストン軸方向でピストンシール前方まで延出
し、かつピストン先端側外周部に密着嵌合する周
状のピストン補強部とを一体形成した補強部材を
取付けたので、制動時の回転トルクの吸収の際に
生ずるねじりモーメントに対する強度をアツプ
し、ピストンシール機能を損うことなく、樹脂ピ
ストン先端外周縁部にクラツクが発生するのを防
止するとともに、摩擦パツドの裏板背面とインシ
ユレータ間に砂等が侵入するのを防ぎ、インシユ
レータが摩滅することを防止している。
As explained above, the present invention consists of a plate-shaped insulator protection part that is closely attached to the front surface of the insulator and abuts the back plate of the pad on a resin piston equipped with an insulator; By installing a reinforcing member integrally formed with a circumferential piston reinforcing part that extends up to the outer periphery of the piston tip and tightly fits into the outer periphery of the piston tip, it increases the strength against the torsional moment that occurs when absorbing rotational torque during braking. This prevents cracks from occurring on the outer periphery of the resin piston tip without impairing the piston sealing function, and also prevents sand from entering between the back plate of the friction pad and the insulator, and prevents the insulator from wearing out. It prevents you from doing so.
図面は本考案の一実施例を示す断面正面図であ
る。
９は樹脂ピストン、１２はインシユレータ、１
３は補強部材、１４はインシユレータ保護部、１
６はピストン補強部である。
The drawing is a sectional front view showing an embodiment of the present invention. 9 is a resin piston, 12 is an insulator, 1
3 is a reinforcing member, 14 is an insulator protection part, 1
6 is a piston reinforcement part.
Claims (1)
ツドを跨ぐキヤリパの作動部に、先端部にピスト
ン径より小径の嵌合溝部を形成してインシユレー
タを嵌合した樹脂ピストンを備えた車両用デイス
クブレーキ装置において、インシユレータ前面に
密着し、パツトの裏板に当接する板状のインシユ
レータ保護部と、前記嵌合溝部よりピストン軸方
向でピストンシール前方まで延出し、かつピスト
ン先端側外周部に密着嵌合する周状のピストン補
強部とを一体形成したことを特徴とするデイスク
ブレーキ用樹脂ピストンの補強部材。 A disc brake device for a vehicle equipped with a resin piston in which an insulator is fitted by forming a fitting groove with a smaller diameter than the piston diameter at the tip of the operating part of the caliper that straddles a pair of friction pads arranged facing each other on both sides of the disc. , a plate-shaped insulator protection part that closely contacts the front surface of the insulator and abuts against the back plate of the part, and a plate-shaped insulator protection part that extends from the fitting groove part to the front of the piston seal in the piston axial direction and is tightly fitted to the outer circumferential part of the tip end side of the piston. A reinforcing member for a resin piston for a disc brake, characterized in that it is integrally formed with a circumferential piston reinforcing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13178483U JPS6038944U (en) | 1983-08-26 | 1983-08-26 | Reinforcing material for resin pistons for disc brakes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13178483U JPS6038944U (en) | 1983-08-26 | 1983-08-26 | Reinforcing material for resin pistons for disc brakes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6038944U JPS6038944U (en) | 1985-03-18 |
| JPS6325385Y2 true JPS6325385Y2 (en) | 1988-07-11 |
Family
ID=30297822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13178483U Granted JPS6038944U (en) | 1983-08-26 | 1983-08-26 | Reinforcing material for resin pistons for disc brakes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6038944U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH071030Y2 (en) * | 1989-01-20 | 1995-01-18 | 大和テープ株式会社 | Decoration material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54152758A (en) * | 1978-05-23 | 1979-12-01 | Sumitomo Electric Ind Ltd | Cylinder dust-proof structure of disc brake |
| JPS5546856B2 (en) * | 1973-08-15 | 1980-11-26 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5546856U (en) * | 1978-09-21 | 1980-03-27 | ||
| JPS5574839U (en) * | 1978-11-20 | 1980-05-23 |
-
1983
- 1983-08-26 JP JP13178483U patent/JPS6038944U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5546856B2 (en) * | 1973-08-15 | 1980-11-26 | ||
| JPS54152758A (en) * | 1978-05-23 | 1979-12-01 | Sumitomo Electric Ind Ltd | Cylinder dust-proof structure of disc brake |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6038944U (en) | 1985-03-18 |
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