JPH0527717Y2 - - Google Patents
Info
- Publication number
- JPH0527717Y2 JPH0527717Y2 JP1988046956U JP4695688U JPH0527717Y2 JP H0527717 Y2 JPH0527717 Y2 JP H0527717Y2 JP 1988046956 U JP1988046956 U JP 1988046956U JP 4695688 U JP4695688 U JP 4695688U JP H0527717 Y2 JPH0527717 Y2 JP H0527717Y2
- Authority
- JP
- Japan
- Prior art keywords
- camshaft
- caliper
- low
- brake
- actuating device
- 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 - Lifetime
Links
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000001141 propulsive effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案はデイスクブレーキの作動装置に関する
ものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an actuating device for a disc brake.
〈従来の技術〉
［従来例 １］
従来のデイスクブレーキの作動装置の一例を第
２図〜第５図により説明する。１は車輪等と一体
回転するデイスクで、２は車体の静止部等に固定
されるトルク受け部材で、３，４はトルク受け部
材２に平行に形成されたレールで、５，６はトル
ク受け部材２の一側に立設されたガイドピンで、
デイスク１の周方向に間隔を隔てている。７はそ
の軸方向中間部の両翼ボス部８，９が前記ピン
５，６に滑嵌合するキヤリパーで、この中間部の
液圧的作動装置部１０と、デイスク１を跨いで前
部に位置し液圧的作動装置部１０に対向するリア
クシヨン部１１と、液圧的作動装置部１０の後部
に位置する機械的作動装置部１２から成る。<Prior Art> [Prior Art Example 1] An example of a conventional disc brake actuating device will be described with reference to FIGS. 2 to 5. Reference numeral 1 is a disk that rotates integrally with the wheels, etc., 2 is a torque receiving member fixed to a stationary part of the vehicle body, 3 and 4 are rails formed parallel to the torque receiving member 2, and 5 and 6 are torque receiving members. A guide pin erected on one side of the member 2,
They are spaced apart in the circumferential direction of the disk 1. Reference numeral 7 denotes a caliper whose wing boss portions 8 and 9 at its axially intermediate portion are slidably fitted into the pins 5 and 6, and is located at the front across the hydraulic actuating device portion 10 and the disk 1 at the intermediate portion. It consists of a reaction section 11 facing the hydraulic actuator section 10 and a mechanical actuator section 12 located at the rear of the hydraulic actuator section 10.
１３，１４は液圧的作動装置部１０の同一軸線
上に穿設された大径穴と小径穴であり、これと直
交する方向の機械的作動装置部１２には有底穴１
５が穿設されている。１６は前記大径穴１３に密
に嵌合するピストン、１８，１９はデイスク１の
両側部に位置し、トルク受け部材２のレール３，
４上に可動的に装架された一対のパツドで、パツ
ド１８はピストン１６の前端面に、パツド１９は
キヤリパー７のリアクシヨン部１１に夫々当接し
ている。２０はデイスク１とパツド１８，１９の
〓間を自動的に調整する機能を備えるプツシユロ
ツドで、ボルト２１やナツト２５等から構成され
ている。ボルト２１はその頭部２２が前記小径穴
１４に密に嵌合すると共に、軸部２３の多条ねじ
がナツト２５に螺合し、ナツト２５の大径部２６
はピストン１６の後部に形成した盲穴１７の段付
面に当接している。尚、上記以外の自動調節部品
や手動調節用のボルト２７等についてはその説明
を省略する。２８は両端部を半球状に形成した作
動子で、その一端部がこれに対応するボルト２１
の頭部２２に形成した凹部２４に係合し、他端部
が後述するカムシヤフト２９のカム溝３０に係合
している。 13 and 14 are a large diameter hole and a small diameter hole drilled on the same axis of the hydraulic actuating device section 10, and a bottomed hole 1 is provided in the mechanical actuating device section 12 in a direction orthogonal thereto.
5 is drilled. 16 is a piston that fits tightly into the large diameter hole 13; 18 and 19 are located on both sides of the disk 1, and the rails 3 of the torque receiving member 2;
The pad 18 is in contact with the front end surface of the piston 16, and the pad 19 is in contact with the reaction portion 11 of the caliper 7, respectively. A push rod 20 has a function of automatically adjusting the distance between the disk 1 and the pads 18 and 19, and is composed of a bolt 21, a nut 25, and the like. The head 22 of the bolt 21 is tightly fitted into the small diameter hole 14, and the multi-start thread of the shaft portion 23 is screwed into the nut 25, and the large diameter portion 26 of the nut 25 is screwed into the bolt 21.
is in contact with a stepped surface of a blind hole 17 formed at the rear of the piston 16. Note that descriptions of automatic adjustment parts other than those mentioned above, manual adjustment bolts 27, etc. will be omitted. 28 is an actuator having hemispherical ends, one end of which is connected to the corresponding bolt 21.
The other end engages with a cam groove 30 of a camshaft 29, which will be described later.
そしてパーキングブレーキの作動装置は、パー
キングブレーキ効力を十分に発揮させるために、
カムシヤフト回転部の摩擦抵抗の低減を図ること
が肝要であり、その一対策手段として従来はニー
ドルローラーベアリング３２を用いていた。即ち
カムシヤフト２９のカム溝３０側が前記有底穴１
５にニードルローラーベアリング３２を介して支
持されていた。又、有底穴１５から突出する突出
部３１にブレーキレバー３３の中間部がろう付け
等により一体に固着してある。ブレーキレバー３
３の一方端部はＵ字形に折り返されて溝３４を形
成し、図示しない遠隔操作用コントロールケーブ
ルのケーブルエンドを掛止する。又、ブレーキレ
バー３３の他方端部に形成した指状部３５はキヤ
リパー７に立設したストツパーピン３６の溝底に
当接している。３７はカムシヤフト２９の突出端
部３１に巻装したブレーキレバー３３の戻し用の
ねじりコイルばねで、その両端部をブレーキレバ
ー３３とストツパーピン３６に夫々掛止して、ブ
レーキレバー３３の指状部３５をストツパーピン
３６に弾接させる方向、すなわち、第４図におい
て時計方向の付勢力をブレーキレバー３３に与え
ている。３８は前記コントロールケーブルのアウ
ターケーシングを取着するブラケツトで、３９は
前記有底穴１５の開口を密閉する内金具付シール
部材である。 In order to fully utilize the parking brake effect, the parking brake operating device
It is important to reduce the frictional resistance of the rotating part of the camshaft, and a needle roller bearing 32 has conventionally been used as a means for this purpose. That is, the cam groove 30 side of the camshaft 29 is the bottomed hole 1.
5 via needle roller bearings 32. Further, the intermediate portion of the brake lever 33 is integrally fixed to the protruding portion 31 protruding from the bottomed hole 15 by brazing or the like. Brake lever 3
One end of 3 is folded back into a U-shape to form a groove 34, into which a cable end of a remote control cable (not shown) is hooked. Further, a finger-shaped portion 35 formed at the other end of the brake lever 33 is in contact with the groove bottom of a stopper pin 36 provided upright on the caliper 7. Reference numeral 37 denotes a torsion coil spring for returning the brake lever 33 which is wound around the protruding end 31 of the camshaft 29, and its both ends are hooked to the brake lever 33 and the stopper pin 36, respectively, so that the finger-like portion 35 of the brake lever 33 A biasing force is applied to the brake lever 33 in the direction of making it come into elastic contact with the stopper pin 36, that is, in the clockwise direction in FIG. 38 is a bracket for attaching the outer casing of the control cable, and 39 is a sealing member with an inner fitting for sealing the opening of the bottomed hole 15.
［従来例 ２］
第６図はカムシヤフト２９に軸受として、低摩
擦樹脂コーテイングを施した円筒状のベアリング
４０を有底穴１５に圧入したものである。[Conventional Example 2] FIG. 6 shows a camshaft 29 in which a cylindrical bearing 40 coated with a low-friction resin is press-fitted into a bottomed hole 15 as a bearing.
〈本考案が解決しようとする問題点〉
上述した従来のパーキングブレーキの作動装置
には次の問題がある。<Problems to be Solved by the Present Invention> The conventional parking brake actuation device described above has the following problems.
(イ) 前者のニードルローラーベアリングを用いた
場合には、高価であり、部品点数が増えて組立
てに手間がかかり、しかもカムシヤフトとロー
ラーの当りが線接触のため、カムシヤフトに局
部的にヘタリを生ずるという問題点を有してい
た。(b) If the former type of needle roller bearing is used, it is expensive, the number of parts increases, and it takes time to assemble, and furthermore, the camshaft and the roller are in line contact, resulting in local wear of the camshaft. There was a problem.
(ロ) 後者の円筒状のベアリングを用いた場合も、
高価であり、組立てに手間がかかるという問題
点が残されていた。(b) Even when using the latter cylindrical bearing,
Problems remained in that it was expensive and took time to assemble.
〈本考案の目的〉
本考案は、従来装置の有するこのような問題点
に鑑みてなされたものであり、安価で、組立てが
簡単であると共に摩擦抵抗が小さく、しかもカム
シヤフトの耐摩耗性及び耐食性を著しく改善でき
る、デイスクブレーキの作動装置を提供すること
を目的とする。<Purpose of the present invention> The present invention was devised in view of the above-mentioned problems of conventional devices, and is inexpensive, easy to assemble, has low frictional resistance, and has improved wear resistance and corrosion resistance of the camshaft. The object of the present invention is to provide a disc brake actuating device that can significantly improve the performance of the disc brake.
〈本考案の構成〉
実施例について図面により説明する。尚、説明
にあたつて従来部品と同一の部品については同一
の符号を付してその説明を省略する。<Configuration of the present invention> Examples will be described with reference to the drawings. In addition, in the description, parts that are the same as conventional parts are given the same reference numerals, and the description thereof will be omitted.
(イ) 作動装置（第１図）
本考案はカムシヤフト２９の外周全面に低摩擦
樹脂Ｐをコーテイングし、これをキヤリパー後部
の自己潤滑性を持たない有底穴１５に直接組み込
んで構成する。(a) Actuating device (Fig. 1) The present invention is constructed by coating the entire outer circumference of the camshaft 29 with a low-friction resin P, and directly incorporating this into the bottomed hole 15, which does not have self-lubricating properties, at the rear of the caliper.
低摩擦樹脂Ｐとしては、二硫化モリブデンを各
種バインダーの溶剤溶液に分散させたものが最適
である。この材料中にカムシヤフト２９の単体或
はカムシヤフト２９にブレーキレバー３３を一体
化したものを浸漬した後、乾燥させれば表面に低
摩擦樹脂Ｐである硬質の潤滑皮膜が形成される。 The optimal low-friction resin P is one in which molybdenum disulfide is dispersed in a solvent solution of various binders. When the camshaft 29 alone or the brake lever 33 integrated with the camshaft 29 is immersed in this material and dried, a hard lubricating film made of the low-friction resin P is formed on the surface.
〈作用〉
(イ) サービスブレーキ時
ピストン１６とボルト２１の頭部２２により形
成される室に圧液を供給すると、ピストン１６が
前進してパツド１８をデイスク１に圧接し、その
反力によりキヤリパー７が後退し、パツド１９を
デイスク１に圧接しこれを制動する。<Operation> (a) During service braking When pressurized fluid is supplied to the chamber formed by the piston 16 and the head 22 of the bolt 21, the piston 16 moves forward and presses the pad 18 against the disc 1, and the reaction force causes the caliper to 7 moves backward, presses the pad 19 against the disk 1, and brakes it.
(ロ) パーキングブレーキ時
図示しないコントロールケーブルを牽引操作
し、ブレーキレバー３３を第４図における矢印Ａ
方向に回転すると、作動子２８を介してプツシユ
ロツド２０に推進力が作用する。この際、カムシ
ヤフト２９の表面にコーテイングした低摩擦樹脂
Ｐの潤滑皮膜により、カムシヤフト２０の回転抵
抗は極めて低いものとなる。(b) At the time of parking brake Pull the control cable (not shown) and move the brake lever 33 in the direction of arrow A in Fig. 4.
When the push rod 20 rotates in this direction, a propulsive force acts on the push rod 20 via the actuator 28. At this time, the rotational resistance of the camshaft 20 is extremely low due to the lubricating film of the low-friction resin P coated on the surface of the camshaft 29.
プツシユロツド２０の推進力を受けてパツド１
８がデイスク１に圧接すると共に、その反力によ
り他方のパツド１９がデイスク１に圧接して制動
状態を維持する。 Pushud 1 receives the propulsion of Pushud 20.
8 comes into pressure contact with the disc 1, and the other pad 19 comes into pressure contact with the disc 1 due to the reaction force, thereby maintaining the braking state.
〈本考案の効果〉
本考案は上述の通りであるから、次に記載する
効果を奏する。<Effects of the present invention> Since the present invention is as described above, it has the following effects.
(イ) カムシヤフトの外周全体に二硫化モリブデン
を含有する低摩擦樹脂コーテイングを施すと共
に、カムシヤフトをキヤリパー後部の自己潤滑
性を持たない有底穴に面接触させて収容した。
そのため、カムシャフトの回転部の回転抵抗が
小さく、しかも面ヘタリも小さい。(a) A low-friction resin coating containing molybdenum disulfide was applied to the entire outer circumference of the camshaft, and the camshaft was housed in surface contact with a bottomed hole that did not have self-lubricating properties at the rear of the caliper.
Therefore, the rotational resistance of the rotating part of the camshaft is small, and the surface flattening is also small.
しかもカムシヤフトの防錆性を長期に亘り維
持できると共に、カムシヤフトと有底穴間のシ
ール性も極めて良好となる。 Furthermore, the rust prevention properties of the camshaft can be maintained over a long period of time, and the sealing performance between the camshaft and the bottomed hole is also extremely good.
くわえて作動子と接触するカムシヤフト外周
のカム溝の表面にも二硫化モリブデンを含有す
る低摩擦樹脂コーテイングが施されるため、グ
リース等の潤滑剤を塗布する必要がない。 In addition, the surface of the cam groove on the outer periphery of the camshaft that comes into contact with the actuator is also coated with a low-friction resin containing molybdenum disulfide, so there is no need to apply lubricant such as grease.
(ロ) カムシヤフトのみを対象に、二硫化モリブデ
ンを含有する低摩擦樹脂をコーテイグするだけ
であるから、製造コストを安価に抑えられる。(b) Since only the camshaft is coated with a low-friction resin containing molybdenum disulfide, manufacturing costs can be kept low.
(ハ) 部品点数が減少するので、組立工数を節減で
きる。(c) Since the number of parts is reduced, assembly man-hours can be reduced.
(ニ) 軸受の厚さ分だけキヤリパーの外形を小さく
できるため、重量の軽減が図れる。(d) Since the outer diameter of the caliper can be made smaller by the thickness of the bearing, the weight can be reduced.
第１図：本考案による第２図の−断面図、
第２図：従来のデイスクブレーキの縦断面図、第
３図：第２図の一部分を断面した平面図、第４
図：パーキングブレーキ装置部の外観図、第５
図：第２図の−断面図、第６図：第５図の変
形例を示す第２図の−断面図。
Figure 1: - cross-sectional view of Figure 2 according to the present invention,
Figure 2: Longitudinal cross-sectional view of a conventional disc brake, Figure 3: A partially sectional plan view of Figure 2, Figure 4.
Figure: External view of parking brake device section, 5th
Figures: A cross-sectional view of FIG. 2; FIG. 6: A cross-sectional view of FIG. 2 showing a modification of FIG. 5;
Claims (1)
体に往復回動するカムシヤフトを嵌装し、このカ
ムシヤフトとこれに直交するプツシユロツド間に
回転力を推進力に変換するカム機構を設け、前記
ブレーキレバーの回動による前記プツシユロツド
の推進力により、前記キヤリパーの前部に配設し
た一対のパツドをデイスクに摩擦係合せしめるよ
うに構成したデイスクブレーキの作動装置におい
て、 自己潤滑性を持たないカムシヤフトの外周全面
に、二硫化モリブデンを含有する低摩擦樹脂コー
テイングを施すと共に、 カムシヤフトの外周面を前記低摩擦樹脂コーテ
イングを介しキヤリパー後部の自己潤滑性を持た
ない有底穴の内周面に面接触させて構成すること
を特徴とする、 デイスクブレーキの作動装置。[Scope of claim for utility model registration] A cam mechanism in which a camshaft that reciprocates together with the brake lever is fitted into a bottomed hole at the rear of the caliper, and converts rotational force into propulsive force between the camshaft and a push rod perpendicular to the camshaft. A disc brake actuating device configured to frictionally engage a pair of pads disposed at the front part of the caliper with the disc by the propulsive force of the push rod caused by rotation of the brake lever, wherein the disc brake has self-lubricating property. A low-friction resin coating containing molybdenum disulfide is applied to the entire outer circumference of the camshaft, which does not have a camshaft, and the outer circumference of the camshaft is coated with the inner circumference of a bottomed hole that does not have self-lubricating properties at the rear of the caliper through the low-friction resin coating. An actuating device for a disc brake, characterized in that it is configured in surface-to-surface contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988046956U JPH0527717Y2 (en) | 1988-04-07 | 1988-04-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988046956U JPH0527717Y2 (en) | 1988-04-07 | 1988-04-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01149030U JPH01149030U (en) | 1989-10-16 |
| JPH0527717Y2 true JPH0527717Y2 (en) | 1993-07-15 |
Family
ID=31273191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988046956U Expired - Lifetime JPH0527717Y2 (en) | 1988-04-07 | 1988-04-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0527717Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4537475B2 (en) * | 2008-07-29 | 2010-09-01 | ヤマハモーターパワープロダクツ株式会社 | Support device for guiding line sensor of golf car |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51109338U (en) * | 1975-02-28 | 1976-09-03 |
-
1988
- 1988-04-07 JP JP1988046956U patent/JPH0527717Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01149030U (en) | 1989-10-16 |
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