JPS5853473Y2 - Boot protection device for disc brakes - Google Patents
Boot protection device for disc brakesInfo
- Publication number
- JPS5853473Y2 JPS5853473Y2 JP1978116287U JP11628778U JPS5853473Y2 JP S5853473 Y2 JPS5853473 Y2 JP S5853473Y2 JP 1978116287 U JP1978116287 U JP 1978116287U JP 11628778 U JP11628778 U JP 11628778U JP S5853473 Y2 JPS5853473 Y2 JP S5853473Y2
- Authority
- JP
- Japan
- Prior art keywords
- boot
- disc
- caliper
- cylinder
- caliper body
- 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
Landscapes
- Sealing Devices (AREA)
- Braking Arrangements (AREA)
Description
【考案の詳細な説明】
本考案はディスクブレーキにおけるブーツ保護装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a boot protection device for a disc brake.
従来、ディスクブレーキ装置において、キャリパボディ
のシリンダ内へ水、ゴミ、砂等の異物の侵入を防止する
ブーツが用いられているが、キャリパボディの組付時或
はブラケットにキャリパボディをディスク軸方向に移動
可能に支持している一対のキャリパ支持ビンのうち、一
方のキャリパ支持ビンを取外し、他方のキャリパ支持ビ
ンな中心にキャリパボディを回動してディスクからずら
して摩擦パッドの支棒を行なうような作業時にブーツが
はみ出していると摩擦パッド裏板とピストンの間でブー
ツの噛み込みにより破損したり、摩擦パッド裏板のエッ
ヂ部でブーツを損傷することが多かった。Conventionally, in disc brake devices, boots have been used to prevent foreign matter such as water, dirt, and sand from entering into the cylinder of the caliper body. Of the pair of caliper support bins movably supported, remove one caliper support bin, rotate the caliper body around the center of the other caliper support bin, and shift it from the disc to support the friction pad. If the boot protrudes during such work, it often gets caught between the friction pad back plate and the piston and breaks, or the boot is damaged at the edge of the friction pad back plate.
以上の如く、ブーツの破損、損傷によりシリンダ内へゴ
ミ、砂等の異物が侵入するとピストンシールを傷つけて
、ブレーキ液洩れを起したり、シリンダ内壁やピストン
外周の変質及び発錆の原因となり、更に砂等の侵入によ
りピストンが自動的に戻らず重大な事故を招くこととな
る。As mentioned above, if foreign matter such as dirt or sand enters the cylinder due to breakage or damage to the boot, it can damage the piston seal, cause brake fluid leakage, and cause deterioration and rusting of the cylinder inner wall and piston outer circumference. Furthermore, due to the intrusion of sand, etc., the piston may not return automatically, resulting in a serious accident.
そこで、本考案は上記の点に鑑み考案されたもので、キ
ャリパボディをディスク軸方向に移動可能に支持する一
対のキャリパ支持ビンのうち、一方のキャリパ支持ビン
を取外すことによって、他方のキャリパ支持ビンを中心
にキャリパボディを回動させてディスクからずらして摩
擦パッドの交換を行なうようにしたディスクブレーキに
おいて、キャリパボディのシリンダ口縁下端部にシリン
ダ底方向に取付孔を形成し、該取付孔にディスク側へ突
出し、かつブラケットに当接しないブーツ切り防止部材
を嵌着固定したことを特徴とし、その目的とするところ
はシリンダ内へ水、ゴミ、砂等の異物の侵入を防止する
ブーツを保護し、ブーツの破損、損傷を有効に防止する
ブーツ保護装置を提供することにある。Therefore, the present invention has been devised in view of the above points. Of a pair of caliper support bins that support the caliper body movably in the disk axial direction, by removing one caliper support bin, the other caliper support can be removed. In a disc brake in which the friction pads are replaced by rotating the caliper body around a pin and displacing it from the disc, a mounting hole is formed in the lower end of the cylinder mouth of the caliper body toward the bottom of the cylinder, and the mounting hole is The feature is that a boot cutting prevention member that protrudes toward the disk side and does not come into contact with the bracket is fitted and fixed, and its purpose is to prevent foreign matter such as water, dirt, and sand from entering the cylinder. The object of the present invention is to provide a boot protection device that protects the boots and effectively prevents breakage and damage to the boots.
以下、本考案の一実施例を図面に基づいて説明すると、
１は車輪と一体回転するディスク、２はボルト孔３に挿
通されるボルトにより車体に固定されるブラケットで、
キャリパボディ４はインナ部５とアクタ部６とにより一
体成形されており、該インナ部５とアクタ部６でディス
ク１を跨ぎ、二対のキャリパ支持ビン７．７によりブラ
ケット２にディスク軸方向に移動可能に支持されていて
、インナ部５に形成したシリンダ９内に摺動可能に設け
られたピストン８の先端をインナ側の摩擦パラド１０の
裏板１１に当接させ、ピストン８０作用により摩擦パッ
ド１０を可動させる。Hereinafter, one embodiment of the present invention will be described based on the drawings.
1 is a disc that rotates together with the wheel, 2 is a bracket that is fixed to the vehicle body with a bolt inserted through the bolt hole 3,
The caliper body 4 is integrally molded with an inner part 5 and an actor part 6, and the inner part 5 and the actor part 6 straddle the disc 1, and the two pairs of caliper support pins 7.7 are attached to the bracket 2 in the disc axial direction. The tip of a piston 8, which is movably supported and slidably provided in a cylinder 9 formed in the inner part 5, is brought into contact with the back plate 11 of the friction pad 10 on the inner side, and friction is caused by the action of the piston 80. The pad 10 is moved.
またアクタ側にも裏板１３を有する摩擦パッド１２が設
けられている。A friction pad 12 having a back plate 13 is also provided on the actor side.
そして、キャリパ支持ビンγ、１の一方を取付して、他
方を中心にキャリパボディ４を回動させ、キャリパボデ
ィ４をディスク１からずらすことによって摩擦パッド１
０．１２の交換を行なう。Then, one of the caliper support bins γ, 1 is attached, and the caliper body 4 is rotated around the other, and the caliper body 4 is shifted from the disc 1, so that the friction pad 1 is
Perform a 0.12 exchange.
尚１４はシリンダ９内に設けられた弾性材料よりなるピ
ストンシールで、ピストン８の戻し及び圧力液体を密封
する。A piston seal 14 made of an elastic material is provided in the cylinder 9 and seals the return of the piston 8 and the pressure liquid.
□シリンダ９０口練肉周に形成したブーツ嵌合溝１５が
、またピノ１７Ｂ０口縁外周に形成したブーツ嵌合溝１
６が設けられ、ゴム等の弾性材料からなるブーツｆ１の
両端部を前記両ブーツ嵌合溝１５．１６に嵌合し、ブー
ツＩＴをピストン８とシリンダ９間に装着し、シリンダ
９内にゴミ、砂等の異物が侵入することを防止している
。□The boot fitting groove 15 formed on the periphery of the cylinder 90 mouth is also the boot fitting groove 1 formed on the outer periphery of the rim of the pinot 17B0.
6 is provided, and both ends of a boot f1 made of an elastic material such as rubber are fitted into the boot fitting grooves 15 and 16, and the boot IT is installed between the piston 8 and the cylinder 9 to remove dust from inside the cylinder 9. This prevents foreign matter such as sand from entering.
キャリパボディ４のシリンダ９′の口縁下端部９ａには
、シリンダ底方向に取付孔１８が形成され該取付孔１８
にディスク側へ突出し、かつブラケットに当接しないよ
うにビン状のブーツ切り防止部材１９を嵌着固定する。A mounting hole 18 is formed in the lower end 9a of the mouth edge of the cylinder 9' of the caliper body 4 toward the bottom of the cylinder.
A bottle-shaped boot cut prevention member 19 is fitted and fixed so as to protrude toward the disk side and not come into contact with the bracket.
向上記実施例では、ブーツ切り防止部材１９はビン状に
形成しているカｔ、本考案はこれに限ることなく、ブー
ツが組付けられた状態においてブーツ切り防止部材１９
はブーツ１Ｔよりもディスク１側に突出し、且つブラケ
ット２に当接しない長さのものであれば、ビン状以外例
えば板状等のものであってもよく又一本に限ることなく
二本以上適数本設けてもよいことは勿論である。In the embodiment described above, the boot cutting prevention member 19 is formed in a bottle shape, but the present invention is not limited to this, and the boot cutting prevention member 19 is formed in a state where the boot is assembled.
may be in a shape other than a bottle, such as a plate shape, as long as it protrudes toward the disc 1 side from the boot 1T and does not come into contact with the bracket 2.It is not limited to one shape, but may be two or more. Of course, an appropriate number may be provided.
また、ブーツ切り防止部材１９はキャリパボディ４の鋳
造成形時に一体的に設けてもよく、またはキャリパボデ
ィ４の成形後に嵌合孔を穿って、該孔に固着してもよい
。Further, the boot cutting prevention member 19 may be provided integrally during casting of the caliper body 4, or may be formed into a fitting hole after the caliper body 4 is formed and fixed in the hole.
本考案は上記の如く、キャリパボディのシリンダ口縁下
端部にシリンダ底方向の取付孔を設け、この取付孔にブ
ーツ切り防止部材をディスク側へ突出し、かつブラケッ
トに当接りないように設けたから、キャリパボディの組
付或はブラケットにキャリパボディを移動可能に支持し
ている一対のキャリパ支持ビンの一方を外し、キャリパ
ボディを回動してディスクからずらして摩擦パッドの交
換を行なうような場合の作業時においてもインナ側の摩
擦パッド裏板とピストンの間でブーツが噛み込まれ破損
したり、該摩擦パッド裏板のエッヂ部でブーツを損傷す
ることがなく、極めて簡単な構成でブーツの破損、損傷
を有効に防止することができる。As mentioned above, the present invention has a mounting hole in the lower end of the cylinder mouth of the caliper body toward the bottom of the cylinder, and the boot cutting prevention member is provided in this mounting hole so as to protrude toward the disk side and not come into contact with the bracket. , when replacing the friction pad by assembling the caliper body or removing one of the pair of caliper support bins that movably supports the caliper body on the bracket, rotating the caliper body and moving it away from the disc. Even during this work, the boot will not get caught between the inner side friction pad back plate and the piston and will not be damaged, and the boot will not be damaged by the edge of the friction pad back plate. Breakage and damage can be effectively prevented.
また本考案は、キャリパボディのシリンダ口縁下端部に
ブーツ切り防止部材を設けたから、全周に亘って設けた
りするよりもディスクブレーキを軽量にすることができ
、しかもブーツ嵌合溝がシリンダ口縁から比較的浅く形
成できるので、水や泥等の堆積が少なくなり、ピストン
の作動に影響をおよぼさず、またビン状や板状にするこ
とが可能となってこの点でもディスクブレーキの軽量化
が図れる。In addition, because the present invention provides a boot cut prevention member at the lower end of the cylinder mouth edge of the caliper body, the disc brake can be made lighter than when it is provided all around the circumference, and the boot fitting groove is located close to the cylinder mouth. Since it can be formed relatively shallowly from the edge, there is less accumulation of water and mud, which does not affect the operation of the piston, and it can be shaped into a bottle or plate shape, which is also the advantage of disc brakes. Lighter weight can be achieved.
さらにブーツ切り防止部材とキャリパボディとを別体と
したから、ディスク幅、パッド裏板厚さ、ライニング厚
さ等の変更があってもブーツ切り防止部材の長さの変更
ワみでよく、キャリパボディやブーツの部品共通化が図
れる。Furthermore, since the boot cut prevention member and the caliper body are separate pieces, even if changes are made to the disc width, pad back plate thickness, lining thickness, etc., the length of the boot cut prevention member only needs to be changed, and the caliper body is separated from the boot cut prevention member. It is possible to standardize body and boot parts.
図面は本考案の一実施例を示すもので、第１図は断面正
面図、第２図は第１図の■−■断面図である。
１はディスク、２はブラケット、４はキャリパボディ、
５はインナ部、６はアクタ部、Ｔはキャリパ支持ビン、
８はピストン、９はシリンダ、９ａは口縁下端部、１０
はインナ部側の摩擦パッドで、１１はその裏板、１４は
ピストンシール、１Ｔはブーツ、１８は取付孔、１９は
ブーツ切り防止部材である。The drawings show one embodiment of the present invention, and FIG. 1 is a sectional front view, and FIG. 2 is a sectional view taken along the line 1--2 of FIG. 1 is the disc, 2 is the bracket, 4 is the caliper body,
5 is the inner part, 6 is the actor part, T is the caliper support bin,
8 is a piston, 9 is a cylinder, 9a is a lower end of the mouth rim, 10
11 is a friction pad on the inner side, 11 is its back plate, 14 is a piston seal, 1T is a boot, 18 is a mounting hole, and 19 is a boot cut prevention member.
Claims (1)
一対のキャリパ支持ビンのうち、一方のキャリパ支持ビ
ンを取外すことによって、他方のキャリパ支持ビンを中
心にキャリパボディを回動させてディスクからずらして
摩擦パッドの交換を行なうようにしたディスクブレーキ
において、キャリパボディのシリンダ口縁下端部にシリ
ンダ底方向に取付孔を形成し、該取付孔にディスク側へ
突出し、かつブラケットに当接しないブーツ切り防止部
材な嵌着固定したことを特徴とするディスクブレーキに
おけるブーツ保護装置。Of a pair of caliper support bins that support the caliper body movably in the disc axial direction, by removing one caliper support bin, the caliper body can be rotated around the other caliper support bin and shifted from the disc to reduce friction. In a disc brake whose pads are replaced, a mounting hole is formed in the lower end of the cylinder mouth of a caliper body toward the bottom of the cylinder, and the boot cut prevention member projects into the mounting hole toward the disc side and does not come into contact with the bracket. A boot protection device for a disc brake, which is characterized by being fitted and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978116287U JPS5853473Y2 (en) | 1978-08-25 | 1978-08-25 | Boot protection device for disc brakes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978116287U JPS5853473Y2 (en) | 1978-08-25 | 1978-08-25 | Boot protection device for disc brakes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5534049U JPS5534049U (en) | 1980-03-05 |
| JPS5853473Y2 true JPS5853473Y2 (en) | 1983-12-05 |
Family
ID=29068693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978116287U Expired JPS5853473Y2 (en) | 1978-08-25 | 1978-08-25 | Boot protection device for disc brakes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5853473Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61110379U (en) * | 1984-12-24 | 1986-07-12 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5239071A (en) * | 1975-09-23 | 1977-03-26 | Akebono Brake Ind Co Ltd | Improved piston in a liquid pressure |
-
1978
- 1978-08-25 JP JP1978116287U patent/JPS5853473Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5239071A (en) * | 1975-09-23 | 1977-03-26 | Akebono Brake Ind Co Ltd | Improved piston in a liquid pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5534049U (en) | 1980-03-05 |
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