JPH0227221Y2 - - Google Patents
Info
- Publication number
- JPH0227221Y2 JPH0227221Y2 JP1984071504U JP7150484U JPH0227221Y2 JP H0227221 Y2 JPH0227221 Y2 JP H0227221Y2 JP 1984071504 U JP1984071504 U JP 1984071504U JP 7150484 U JP7150484 U JP 7150484U JP H0227221 Y2 JPH0227221 Y2 JP H0227221Y2
- Authority
- JP
- Japan
- Prior art keywords
- boot
- support pin
- annular seal
- caliper
- hole
- 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
- 230000007246 mechanism Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Landscapes
- Sealing Devices (AREA)
- Braking Arrangements (AREA)
Description
【考案の詳細な説明】
〔考案の対象及び産業上の利用分野〕
本考案は、自動車の車輪ブレーキなどに利用さ
れるデイスクブレーキ、特に、デイスクロータの
一側のパツドをデイスクロータに押圧するピスト
ンを内蔵してこのピストンの作動反力によりデイ
スクロータの他側のパツドをデイスクロータに押
圧するところのデイスクロータ軸線方向へ摺動可
能なキヤリパがこのキヤリパの孔を摺動可能に貫
通し且つ固定部材に固定されたデイスクロータ軸
線方向の支持ピンを介して固定部材に支持され、
前記孔のデイスクロータ軸線方向両側には蛇腹部
の一端の環状シール部が前記孔の開口部の内周溝
に取付けられてその内径全周で前記支持ピンに圧
接して前記支持ピンを摺動可能に弾性保持し、前
記蛇腹部の他端の環状シール部が自己の弾性力で
前記支持ピンの端部の外周溝に取付けられたブー
ツが配設されているデイスクブレーキに関するも
のである。[Detailed description of the invention] [Subject of the invention and industrial field of application] The present invention relates to a disc brake used for automobile wheel brakes, etc., and in particular to a piston that presses a pad on one side of the disc rotor against the disc rotor. A caliper that is slidable in the axial direction of the disc rotor and presses the pad on the other side of the disc rotor against the disc rotor by the action reaction force of this piston is slidably penetrated through the hole of this caliper and fixed. supported by the fixed member via a support pin in the axial direction of the disk rotor fixed to the member;
An annular seal portion at one end of the bellows portion is attached to the inner circumferential groove of the opening of the hole on both sides of the hole in the disk rotor axial direction, and the entire inner circumference of the annular seal portion presses against the support pin to slide the support pin. The present invention relates to a disc brake in which a boot is provided that can be elastically held, and an annular seal portion at the other end of the bellows portion is attached to an outer circumferential groove at the end of the support pin by its own elastic force.
この種のデイスクブレーキにおいては、パツド
の摩耗の進行に伴いキヤリパの位置がデイスクロ
ータ軸線方向一側に移動し、このキヤリパ移動に
よつて前記キヤリパの孔の両側に設置された一対
のブーツの一方が短縮してその内側空間容積が減
少し、その内側空間には正圧が発生する。ブーツ
の内側空間の正圧はブーツの蛇腹部を膨張させ、
ブーツの他端の環状シール部を支持ピンから浮き
上がらせて大気中に逃げるが、この時、加工費、
材料費、重量などの低減の制約によつて支持ピン
の外周溝が浅い場合にはブーツの他端の環状シー
ル部が支持ピンの外周溝からはみ出してシール不
良が発生すると言う問題があつた。
In this type of disc brake, the position of the caliper moves to one side in the axial direction of the disc rotor as the pad wear progresses, and this movement of the caliper causes one of the boots installed on both sides of the hole in the caliper to move. is shortened, its inner space volume decreases, and positive pressure is generated in the inner space. The positive pressure in the inner space of the boot causes the bellows of the boot to expand,
The annular seal at the other end of the boot lifts up from the support pin and escapes into the atmosphere, but at this time, processing costs,
When the outer circumferential groove of the support pin is shallow due to restrictions on reducing material costs and weight, there is a problem in that the annular seal portion at the other end of the boot protrudes from the outer circumferential groove of the support pin, resulting in a seal failure.
上記の問題を解消し得る従来技術としては、例
えば実公昭58−32026号公報に記載されたものが
ある。このものは、第５図に示したようにブーツ
２１，２２の一端の環状シール部２１ｂ，２２ｂ
の内径部位に複数個の軸方向溝２１ｄ，２２ｄを
設け、この軸方向溝２１ｄ，２２ｄとキヤリパ２
３の孔２３ａを介して両ブーツの内側空間２４，
２５を互に連通させるものであり、一方の内側空
間、例えば内側空間２４の正圧は軸方向溝２１
ｄ、孔２３ａ、軸方向溝２２ｄを通つて他方の内
側空間２５に逃がされる。しかしながら、自動車
走行時において車輪により跳ね上げられた小石が
ブーツ２１，２２の蛇腹部２１ａ，２２ａに衝突
する等の理由でブーツ２１，２２の蛇腹部２１
ａ，２２ａが破損した場合、水がブーツ２１，２
２の一端シール部２１ｂ，２２ｂの内径部位の軸
方向溝２１ｄ，２２ｄからキヤリパ２３の孔２３
ａに浸入し、キヤリパ２３の孔２３ａ内にてキヤ
リパ２３と支持ピン２６とが錆付いてブレーキ時
キヤリパが的確に移動しなくなると言う問題があ
る。 As a conventional technique capable of solving the above-mentioned problem, there is one described, for example, in Japanese Utility Model Publication No. 58-32026. As shown in FIG.
A plurality of axial grooves 21d and 22d are provided in the inner diameter portion of the caliper 2, and the axial grooves 21d and 22d are connected to the caliper 2.
The inner space 24 of both boots through the hole 23a of No. 3,
25 are in communication with each other, and the positive pressure in one of the inner spaces, for example, the inner space 24, is connected to the axial groove 21.
d, the hole 23a, and the axial groove 22d to escape into the other inner space 25. However, the bellows portions 21a, 22a of the boots 21, 22 are damaged due to reasons such as pebbles thrown up by the wheels when the car is running.
If the boots 21, 22a are damaged, water will leak into the boots 21, 2.
The hole 23 of the caliper 23 is inserted from the axial grooves 21d and 22d of the inner diameter portions of the one end seal portions 21b and 22b of the caliper 23.
There is a problem in that the caliper 23 and the support pin 26 become rusted in the hole 23a of the caliper 23, and the caliper does not move properly during braking.
また、ブーツの内側空間の正圧を大気中に逃が
す際に、ブーツの他端の環状シール部が支持ピン
の外周溝からはみ出してシール不良を発生すると
いう問題を解消し得る従来技術として、特開昭55
−76227号公報に記載されるものがある。このも
のは、支持ピンがキヤリパに固定されると共に固
定部材に形成された開口に嵌合され、支持ピンに
形成された外周溝にブーツの他端の環状シール部
を自己の弾性力で嵌着され、ブーツの一端の環状
シール部を固定部材の開口の縁部に径外方に開く
ように形成された周溝に自己の弾性により嵌着さ
れて、支持ピンと固定部材の開口間の摺動部を保
護するようにしたデイスクブレーキにおいて、ブ
ーツの一端の環状シール部の近傍の蛇腹部を固定
部材の外周に常時自己の弾性で嵌着させると共
に、ブーツがブーツ内側空間の正圧により変形し
て蛇腹部が固定部材より離間した際にブーツ内側
空間と外気を連通して正圧を逃がす常閉型の連通
路を設けている。しかしながら、このものにおい
ては、上記した従来技術と同じ問題を有するばか
りか、常閉型の連通路が開いて正圧を逃がす際に
水等が外部より侵入する恐れがあると共に、環状
シール部の近傍の蛇腹部を固定部材の外周に密封
シールさせる構成であるため、該蛇腹部が密着さ
れる固定部材の外周にシール部を形成する必要が
あつて当該デイスクブレーキの製造コストが嵩む
という問題がある。尚、このデイスクブレーキ
は、上記したように支持ピンがキヤリパに固定さ
れると共に固定部材に形成された開口に嵌合さ
れ、支持ピンに形成された外周溝にブーツの他端
の環状シール部を自己の弾性力で嵌着され、ブー
ツの一端の環状シール部を固定部材の開口の縁部
に径外方に開くように形成された周溝に自己の弾
性により嵌着されて、支持ピンと固定部材の開口
間の摺動部を保護するようにしたデイスクブレー
キであり、蛇腹部と固定部材との間で通常時は密
封シールし、ブーツ内側空間に正圧が発生した時
に両者間の密封シールが解かれ該正圧が逃がされ
るような構成は、キヤリパが支持ピンを介して固
定部材に支持され、キヤリパの孔のデイスクロー
タ軸線方向側には蛇腹部の一端の環状シール部が
孔の開口部の内周溝に取付けられその内径全周で
支持ピンに圧接して前記支持ピンを摺動可能に弾
性保護し、蛇腹部の他端の環状シール部が自己の
弾性力で支持ピンの短部の外周溝に取付けられた
ブーツが配設されているデイスクブレーキにおい
ては採用することができない。 In addition, when the positive pressure inside the boot is released to the atmosphere, the annular seal portion at the other end of the boot protrudes from the outer circumferential groove of the support pin, resulting in a seal failure. 1977
There is one described in the -76227 publication. In this case, the support pin is fixed to the caliper and fitted into an opening formed in the fixing member, and the annular seal part at the other end of the boot is fitted into the outer circumferential groove formed in the support pin by its own elastic force. The annular seal portion at one end of the boot is fitted into a circumferential groove formed radially outward at the edge of the opening of the fixing member by its own elasticity, thereby allowing sliding between the support pin and the opening of the fixing member. In the disc brake, the bellows part near the annular seal part at one end of the boot is always fitted onto the outer periphery of the fixing member by its own elasticity, and the boot is deformed by positive pressure in the space inside the boot. A normally closed communication path is provided that communicates the boot inner space with outside air and releases positive pressure when the bellows part is separated from the fixed member. However, this method not only has the same problems as the prior art described above, but also has the risk of water, etc. entering from the outside when the normally closed communication path opens to release positive pressure. Since the structure is such that the nearby bellows part is hermetically sealed to the outer periphery of the fixed member, it is necessary to form a sealing part on the outer periphery of the fixed member to which the bellows part is in close contact, which increases the manufacturing cost of the disc brake. be. In addition, as described above, in this disc brake, the support pin is fixed to the caliper and fitted into the opening formed in the fixing member, and the annular seal portion at the other end of the boot is inserted into the outer circumferential groove formed in the support pin. The annular seal part at one end of the boot is fitted by its own elasticity into a circumferential groove formed to open radially outward at the edge of the opening of the fixing member, and is fixed to the support pin. This is a disc brake that protects the sliding part between the openings of the members. Normally, there is a hermetic seal between the bellows part and the fixed member, and when positive pressure is generated in the space inside the boot, there is a hermetic seal between the two. In a configuration in which the positive pressure is released when the caliper is released, the caliper is supported by a fixed member via a support pin, and the annular seal part at one end of the bellows part is attached to the opening of the hole on the side of the caliper hole in the disk rotor axial direction. It is attached to the inner circumferential groove of the bellows part, and the entire inner circumference of the bellows part presses against the support pin to elastically protect the support pin so that it can slide. This method cannot be used for disc brakes that have a boot attached to the outer circumferential groove of the disc brake.
そこで本考案は、両ブーツの一端の環状シール
部をその内径全周で支持ピンに圧接させたものに
おいて、ブーツの内側空間の正圧を問題のない高
さに抑制することをその技術的課題とする。
Therefore, the technical problem of this invention is to suppress the positive pressure in the inner space of the boots to a level that does not cause problems, in which the annular seal portion at one end of both boots is pressed against the support pin around the entire inner circumference. shall be.
上記技術的課題を解決するために講じた手段
は、前記ブーツの蛇腹部に、ブーツの内側空間の
正圧により自己の弾性に抗して押し開かれてブー
ツ内側空間からブーツ外側空間への空気の流通を
許容しブーツ外側空間からブーツ内側空間への空
気の流通を阻止する空気通路を形成する逆止弁部
を一体に形成することである。
The means taken to solve the above technical problem is that the bellows part of the boot is pushed open against its own elasticity by the positive pressure of the inside space of the boot, and air flows from the inside space of the boot to the outside space of the boot. The present invention is to integrally form a check valve portion that forms an air passage that allows air to flow through the boot and prevents air from flowing from the boot outer space to the boot inner space.
而して、パツドの摩耗に応じてキヤリパがデイ
スクロータの軸線方向一側へ移動することにより
一方のブーツの内部空間に発生する正圧は、前記
逆止弁部の弾性力に応じた高さに抑制される。そ
のため、逆止弁部の弾性力を弱く設定して置くこ
とにより、ブーツの内側空間の正圧を問題のない
高さに抑制でき、ブーツの他端の環状シール部が
支持ピンの外周溝からはみ出しシール不良となる
ことが解消できる。
Therefore, as the caliper moves to one side in the axial direction of the disc rotor as the pad wears, the positive pressure generated in the internal space of one boot has a height corresponding to the elastic force of the check valve section. is suppressed. Therefore, by setting the elastic force of the check valve part to be weak, the positive pressure in the inner space of the boot can be suppressed to a level that does not cause problems, and the annular seal part at the other end of the boot can be removed from the outer circumferential groove of the support pin. This eliminates the problem of protruding seal defects.
而して、本考案によれば、ブーツが破損しても
キヤリパの孔内に浸水することがなく、キヤリパ
と支持ピンとが錆付いてブレーキ時にキヤリパが
的確に移動しないという問題も発生しない効果が
ある。そして、第５図の従来技術においては、ブ
ーツの一端の環状シール部の内径部位の軸方向溝
はブーツ成型技術の関係やブーツの一端の環状シ
ール部と支持ピンとの締代で軸方向溝がつぶれな
いようにする関係から比較的大きなものとなり、
ブーツの一端の環状シール部とキヤリパの孔の内
周間のシール面圧が軸方向溝の外径部位で相当に
低くなつてシール不良が発生する問題があるが、
本考案では各ブーツの一端の環状シール部がその
内径全周で支持ピンに圧接するためブーツの一端
の環状シール部とキヤリパの孔の内周溝間に必要
なシール面圧を全周に亘り与えることができ、従
つて上記シール不良が発生しない効果がある。
Therefore, according to the present invention, even if the boot is damaged, water will not infiltrate into the hole of the caliper, and there will be no problem that the caliper and support pin will rust and the caliper will not move properly during braking. . In the prior art shown in FIG. 5, the axial groove on the inner diameter of the annular seal portion at one end of the boot is formed due to the relationship between the boot molding technology and the tightness between the annular seal portion at one end of the boot and the support pin. It became relatively large due to the relationship of keeping it from collapsing,
There is a problem that the sealing surface pressure between the annular seal part at one end of the boot and the inner periphery of the caliper hole becomes considerably lower at the outer diameter part of the axial groove, resulting in a seal failure.
In this invention, the annular seal part at one end of each boot presses against the support pin over its entire inner circumference, so the necessary sealing surface pressure is applied between the annular seal part at one end of the boot and the inner circumferential groove of the caliper hole over the entire circumference. Therefore, there is an effect that the above-mentioned seal failure does not occur.
また、本考案によれば、ブーツの内側空間の正
圧により自己の弾性に抗して押し開かれてブーツ
内側空間からブーツ外側空間への空気の流通を許
容しブーツ外側空間からブーツ内側空間への空気
の流通を阻止する空気通路を形成する逆止弁部に
より、ブーツ内側空間への泥水等の侵入を確実に
防止することができる。また更に本考案によれ
ば、この逆止弁部がブーツの蛇腹部に一体形成さ
れているため、固定部材側等に密封シール部を形
成する必要もないので、当該デイスクブレーキの
製造コストの増大を招くことがない。 Further, according to the present invention, the boot is pushed open against its own elasticity by the positive pressure in the inner space of the boot, allowing air to flow from the inner space of the boot to the outer space of the boot, and from the outer space of the boot to the inner space of the boot. The check valve part that forms an air passage that prevents air flow can reliably prevent muddy water and the like from entering the boot inner space. Furthermore, according to the present invention, since the check valve part is integrally formed with the bellows part of the boot, there is no need to form a seal part on the fixed member side, etc., which increases the manufacturing cost of the disc brake. It never invites.
以下、本考案の実施例を図面に基いて説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.
第４図において、１は車輪（図示省略）と一体
回転するデイスクロータ、２は固定部材でデイス
クロータ１の車両内側にて車両のナツクル等の非
回転部分（図示省略）に固定されている。固定部
材２はデイスクロータ１の車両内側のパツド３と
車両外側のパツド４とをデイスクロータ軸線方向
に摺動可能に支持する。パツド３をデイスクロー
タ１に押圧するピストン５を内蔵してピストン５
の作動反力でパツド４をデイスクロータ１に押圧
するキヤリパ６は一対の支持機構７Ａ，７Ｂによ
り固定部材２にデイスクロータ軸線方向へ摺動可
能に支持されている。 In FIG. 4, 1 is a disk rotor that rotates integrally with a wheel (not shown), and 2 is a fixed member that is fixed to a non-rotating part (not shown) such as a knuckle of the vehicle inside the disk rotor 1. The fixing member 2 supports a pad 3 on the inside of the vehicle and a pad 4 on the outside of the vehicle of the disc rotor 1 so as to be slidable in the axial direction of the disc rotor. The piston 5 has a built-in piston 5 that presses the pad 3 against the disc rotor 1.
The caliper 6, which presses the pad 4 against the disk rotor 1 with the action reaction force, is supported by a pair of support mechanisms 7A and 7B so as to be slidable on the fixed member 2 in the axial direction of the disk rotor.
支持機構７Ａは第１，４図示のように、キヤリ
パ６に一体形成された筒状部７と、この筒状部７
の孔８に挿通され且つその内孔９ａを挿通して固
定部材２に螺合するボルト１６により固定部材２
に螺合・固定される中空の支持ピン９と、孔８の
中央部に挿入されたスリーブ１０と、一対のゴム
製ブーツ１１及び１２とを主たる構成部材として
いる。ブーツ１１，１２は蛇腹部１１ａ，１２
ａ、一端環状シール部１１ｂ，１２ｂ、他端環状
シール部１１ｃ，１２ｃより成り、一端環状シー
ル部１１ｂ，１２ｂは孔８の開口部の内周溝８
ａ，８ｂにそれぞれ取付けられて支持ピン９を摺
動可能に弾性保持しており、他端環状シール部１
１ｃ，１２ｃは支持ピン９の端部の外周溝９ｂ，
９ｃにそれぞれ取付けられている。一端環状シー
ル部１１ｂ，１２ｂの外径と内周溝８ａ，８ｂの
底面間、一端環状シール１１ｂ，１２ｂの内径と
支持ピン９の外周面間にはそれぞれ締代が設定さ
れ、他端環状シール部１１ｃ，１２ｃと外周溝９
ｂ，９ｃの底面間にも締代が設定されている。ブ
ーツ１１，１２の一端環状シール部１１ｂ，１２
ｂはその内径全周で支持ピン９に圧接しているも
のである。第１〜３図に示すように、ブーツ１
１，１２の蛇腹部１１ａ，１２ａには内側空間１
４，１５の正圧で自己の弱い弾性力の抗して押し
開かれて空気通路を形成する逆止弁部１１ｄ，１
２ｄが一体形成されている。而して、キヤリパ６
が第２図で右方向へ移動することによる内側空間
１４の正圧は逆止弁部１１ｄを押し開くところの
低い圧力に制限される。 As shown in the first and fourth figures, the support mechanism 7A includes a cylindrical part 7 integrally formed with the caliper 6, and this cylindrical part 7.
The fixing member 2 is secured to the fixing member 2 by a bolt 16 that is inserted into the hole 8 of the
The main components are a hollow support pin 9 that is screwed and fixed to the hole 8, a sleeve 10 inserted into the center of the hole 8, and a pair of rubber boots 11 and 12. The boots 11, 12 have bellows parts 11a, 12
a, Consists of annular seal portions 11b, 12b at one end and annular seal portions 11c, 12c at the other end;
a and 8b to elastically hold the support pin 9 in a slidable manner, and the annular seal portion 1 at the other end
1c and 12c are outer circumferential grooves 9b at the ends of the support pins 9,
9c, respectively. A tightening allowance is set between the outer diameter of the annular seal portions 11b, 12b at one end and the bottom surfaces of the inner circumferential grooves 8a, 8b, and between the inner diameter of the annular seals 11b, 12b at one end and the outer circumferential surface of the support pin 9, and the annular seal at the other end. parts 11c, 12c and outer circumferential groove 9
A tightening allowance is also set between the bottom surfaces of b and 9c. One end annular seal portion 11b, 12 of the boots 11, 12
b is in pressure contact with the support pin 9 over its entire inner circumference. As shown in Figures 1-3, boots 1
The inner space 1 is provided in the bellows parts 11a and 12a of 1 and 12.
The check valve parts 11d and 1 are pushed open by the positive pressure of 4 and 15 against their own weak elastic force to form an air passage.
2d is integrally formed. Then, Calipa 6
The positive pressure in the inner space 14 caused by the movement of the check valve portion 11d to the right in FIG. 2 is limited to a low pressure that pushes the check valve portion 11d open.
逆止弁部１１ｄは通常は空気通路を閉じて内側
空間１４を大気から遮断する。逆止部部１２ｄ
は、ブーツ１２の内側空間１５には負圧が発生す
るだけであるから空気通路を閉じ放しである。し
かし、デイスクブレーキの組立時に内側空間１５
内の正圧を大気中に逃がすのに役立つ。尚、ブー
ツ１２の蛇腹部１２ａを環状シール部１２ｃの端
部に連結し且つこの連結部分を薄肉にしているた
め、内側空間１５の負圧は蛇腹部１２ａを支持ピ
ン９に押し付けるだけで、環状シール部１２ｃの
シール作用に悪影響を及ぼすことはない。 The check valve portion 11d normally closes the air passage and isolates the inner space 14 from the atmosphere. Non-return portion 12d
Since only negative pressure is generated in the inner space 15 of the boot 12, the air passage remains closed. However, when assembling the disc brake, the inner space 15
It helps release the positive pressure inside to the atmosphere. Incidentally, since the bellows part 12a of the boot 12 is connected to the end of the annular seal part 12c and this connection part is made thin, the negative pressure in the inner space 15 only presses the bellows part 12a against the support pin 9, and the ring-shaped seal part 12a is connected to the end of the annular seal part 12c. This does not adversely affect the sealing action of the seal portion 12c.
支持機構７Ｂは支持機構７Ａと同じ構造である
ため、その説明を省略する。 Since the support mechanism 7B has the same structure as the support mechanism 7A, the explanation thereof will be omitted.
尚、スリーブ１６は孔８の加工の便宜を図るた
めに用いられたもので、これを筒状部７と一体に
形成しても良い。 Note that the sleeve 16 is used to facilitate the machining of the hole 8, and may be formed integrally with the cylindrical portion 7.
第１図は本考案の一実施例の要部を示す図、第
２図は第１図の一部拡大図、第３図は第２図中の
矢示方向から見た図、第４図は本考案の一実施
例の全体を示す図、第５図は従来装置の断面部分
図である。
１……デイスクロータ、２……固定部材、３，
４……パッド、５……ピストン、６……キヤリ
パ、９……支持ピン、１１，１２……ブーツ、１
１ｄ，１２ｄ……逆止弁部。
Figure 1 is a diagram showing the main parts of an embodiment of the present invention, Figure 2 is a partially enlarged view of Figure 1, Figure 3 is a view seen from the direction of the arrow in Figure 2, and Figure 4. 5 is a diagram showing an entire embodiment of the present invention, and FIG. 5 is a partial cross-sectional view of a conventional device. 1...Disc rotor, 2...Fixing member, 3,
4... Pad, 5... Piston, 6... Caliper, 9... Support pin, 11, 12... Boot, 1
1d, 12d...Check valve section.
Claims (1)
タに押圧するピストンを内蔵してこのピストンの
作動反力によりデイスクロータの他側のパツドを
デイスクロータに押圧するところのデイスクロー
タ軸線方向へ摺動可能なキヤリパがこのキヤリパ
に孔を摺動可能に貫通し且つ固定部材に固定され
たデイスクロータ軸線方向の支持ピンを介して固
定部材に支持され、前記孔のデイスクロータ軸線
方向両側には蛇腹部の一端の環状シール部が前記
孔の開口部の内周溝に取付けられてその内径全周
で前記支持ピンに圧接して前記支持ピンを摺動可
能に弾性保持し、前記蛇腹部の他端の環状シール
部が自己の弾性力で前記支持ピンの端部の外周溝
に取付けられたブーツが配設されているデイスク
ブレーキにおいて、前記ブーツの蛇腹部に、ブー
ツの内側空間の正圧により自己の弾性に抗して押
し開かれてブーツ内側空間からブーツ外側空間へ
の空気の流通を許容しブーツ外側空間からブーツ
内側空間への空気の流通を阻止する空気通路を形
成する逆止弁部を一体に形成したことを特徴とす
るデイスクブレーキ。 A caliper that has a built-in piston that presses a pad on one side of the disc rotor against the disc rotor, and that can slide in the axial direction of the disc rotor to press the pad on the other side of the disc rotor against the disc rotor by the reaction force of the piston's operation. is supported by the fixed member via a support pin in the disk rotor axial direction that extends slidably through a hole in the caliper and is fixed to the fixed member, and one end of the bellows portion is provided on both sides of the hole in the disk rotor axial direction. An annular seal part is attached to the inner circumferential groove of the opening of the hole and presses the entire inner circumference of the annular seal part to the support pin to elastically hold the support pin in a slidable manner, and an annular seal part at the other end of the bellows part In the disc brake, the boot is attached to the outer circumferential groove of the end of the support pin by its own elastic force, and the bellows part of the boot is attached to the bellows part by its own elastic force by the positive pressure of the inner space of the boot. A check valve part is integrally formed that forms an air passage that is pushed open against the resistance and allows air to flow from the boot inner space to the boot outer space and prevents air flow from the boot outer space to the boot inner space. A disc brake that is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7150484U JPS60182536U (en) | 1984-05-15 | 1984-05-15 | disc brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7150484U JPS60182536U (en) | 1984-05-15 | 1984-05-15 | disc brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60182536U JPS60182536U (en) | 1985-12-04 |
| JPH0227221Y2 true JPH0227221Y2 (en) | 1990-07-24 |
Family
ID=30609061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7150484U Granted JPS60182536U (en) | 1984-05-15 | 1984-05-15 | disc brake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60182536U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5576227A (en) * | 1978-12-01 | 1980-06-09 | Akebono Brake Ind Co Ltd | Sliding unit sealing mechanism of pin type disk brake |
-
1984
- 1984-05-15 JP JP7150484U patent/JPS60182536U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5576227A (en) * | 1978-12-01 | 1980-06-09 | Akebono Brake Ind Co Ltd | Sliding unit sealing mechanism of pin type disk brake |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60182536U (en) | 1985-12-04 |
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