JPH0447452Y2

JPH0447452Y2 -

Info

Publication number: JPH0447452Y2
Application number: JP1986044974U
Authority: JP
Priority date: 1986-03-27
Filing date: 1986-03-27
Publication date: 1992-11-10
Also published as: JPS62156633U

Description

【考案の詳細な説明】〔考案の目的〕（産業上の利用分野）本考案は自動車等に用いられるデイスクブレー
キ装置に関するものである。[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a disc brake device used in automobiles and the like.

（従来の技術とその問題点）従来のこの種のデイスクブレーキ装置は、作動
部にシリンダを反作動部に複数の反力片を有した
キヤリパと、上記シリンダ内に配置されるピスト
ンを有し、ブレーキ圧によつてピストンが一方へ
作動されて一方パツドをデイスクに押圧し、キヤ
リパの他方作動によつて、その反力片を介して他
方パツドがデイスクに押圧されてブレーキ作用を
なすものであつた。而して、上記反力片の横断
面、つまりデイスクの弦に沿つた反力片の横断面
は均一であつたので、ブレーキ作動時のパツドに
かかる面圧は、その中央部で低く周辺部で高くな
つて、パツドが凸摩耗し、寿命が低下するととも
に、消費液量が増加して、ペタルストロークが増
大するという問題点があつた。(Prior Art and its Problems) A conventional disc brake device of this type has a caliper having a cylinder as an actuating part and a plurality of reaction pieces as a non-actuating part, and a piston disposed within the cylinder. The piston is actuated in one direction by the brake pressure, pressing one pad against the disk, and when the caliper is actuated on the other side, the other pad is pressed against the disk via its reaction piece, producing a braking action. It was hot. Since the cross section of the reaction piece, that is, the cross section of the reaction piece along the chord of the disc, was uniform, the surface pressure applied to the pad during brake activation was low in the center and low in the periphery. There were problems in that the pads became high, the pads wore out convexly, the lifespan was shortened, and the amount of liquid consumed increased, resulting in an increase in the petal stroke.

〔考案の構成〕[Structure of the idea]

（問題点を解決するための手段）前記問題を解決するための技術的手段は、デイ
スクにパツドを係合させるキヤリパの反力片の厚
みをその中央部を最大とし周辺部程薄くする事で
ある。 (Means for solving the problem) A technical means for solving the above problem is to make the thickness of the reaction piece of the caliper that engages the pad with the disk to be maximum at the center and thinner at the periphery. be.

（作用）反力片の中央部を厚くする事によりパツドに均
等に力が加わり、パツドの偏摩耗を防止出来るの
で、パツドの均一な摩耗により長期間パツドの交
換をしなくともよいことになる。(Function) By making the center part of the reaction piece thicker, force is applied evenly to the pad and uneven wear of the pad can be prevented, so there is no need to replace the pad for a long period of time due to uniform wear of the pad. .

（実施例）以下本考案の実施例を第１図〜第４図に従つて
説明する。(Example) Examples of the present invention will be described below with reference to FIGS. 1 to 4.

第１図、第２図においてブリツジ部３により車
輪（図示せず）と一体に回転するデイスク１をま
たいで一方に作動部４、他方に反作動部５を一体
的に形成されたキヤリパ２の作動部４には、シリ
ンダ６が形成され、反作動部５には複数の反力片
５ａ，５ｃが形成されている。キヤリパ２の作動
部４とデイスク１の間、反作動部５とデイスク１
の間にはそれぞれパツド８，９が周知のように配
置されている。作動部４に形成されたシリンダ６
内にはピストン１０が摺動可能に設けられ、マス
タシリンダ（図示せず）からホース（図示せず）
を介してシリンダ６内に供給される液圧によりピ
ストン１０が第１図で右方へ前進する。前進する
ピストン１０により、デイスク１側のライニング
８ａとピストン１０側の裏金８ｂを接合したパツ
ド８が加圧され前進し、回転するデイスク１と摩
擦を生じる。同時に、シリンダ６内に供給される
液圧によつてキヤリパ２が第１図で左方へ移動さ
れるので、デイスク１側のライニング９ａと反作
動部５側の裏金９ｂが接合されたパツド９がデイ
スク１側へ前進されて、デイスク１と周接され
る。この結果ブレーキ作用が行われる。上記反作
動部の反力片５ａ，５ｃの形状は第２図で明らか
なように、側面の肉圧（ｔ）に比し、中央部の肉
厚（Ｔ）が漸次大きくなるように形成される。従
つてパツド９にかかる面圧が均一となつて、パツ
ド９の偏摩耗が低減される。この第２図のものは
一対の反力片を有するもので比較的小型車に適用
される。第３図は中型車に適するもので、反作動
部５に、３ケの反力片５ａ，５ｂ，５ｃが設けら
れるもので、両側面の反力片５ａ，５ｃの肉厚
（ｔ）に比し、中央の反力片５ｂの肉厚（Ｔ）が
大とされる。第４図は大型車に適するもので、第
３図と同様に３ケの反力片５ａ，５ｂ，５ｃが設
けられるが、両側面の反力片５ａ，５ｃは側面か
ら中央にむかつて漸次肉厚が大（t₁からt₂）とさ
れ、中央の圧力片５ｂを同様に中央にむかつて肉
厚が漸次大（T₁からT₂）とされる。なおT₁はt₂
より大と設定されている。従つて第３、第４図の
ものもパツド９にかかる面圧が均一となつてパツ
ド９の偏摩耗が低減される。 1 and 2, a caliper 2 is integrally formed with an actuating part 4 on one side and a reaction part 5 on the other side, straddling a disk 1 which rotates together with a wheel (not shown) by a bridge part 3. A cylinder 6 is formed in the actuation part 4, and a plurality of reaction force pieces 5a, 5c are formed in the reaction part 5. Between the actuating part 4 and disc 1 of caliper 2, and between the counteracting part 5 and disc 1
Pads 8 and 9 are arranged between them in a known manner. A cylinder 6 formed in the actuating part 4
A piston 10 is slidably provided inside, and a hose (not shown) is connected from a master cylinder (not shown) to a hose (not shown).
The piston 10 moves forward to the right in FIG. 1 due to the hydraulic pressure supplied into the cylinder 6 through the piston 10. The advancing piston 10 pressurizes the pad 8, in which the lining 8a on the side of the disk 1 and the back metal 8b on the side of the piston 10 are joined, and moves forward, creating friction with the rotating disk 1. At the same time, the caliper 2 is moved to the left in FIG. is advanced toward the disk 1 side and is brought into circumferential contact with the disk 1. This results in a braking action. As is clear from FIG. 2, the shape of the reaction force pieces 5a and 5c of the reaction part is formed so that the wall thickness (T) at the center portion becomes gradually larger than the wall pressure (t) at the side surface. Ru. Therefore, the surface pressure applied to the pad 9 becomes uniform, and uneven wear of the pad 9 is reduced. The one shown in FIG. 2 has a pair of reaction pieces and is applied to relatively small cars. Fig. 3 is suitable for a medium-sized car, and the reaction part 5 is provided with three reaction force pieces 5a, 5b, 5c, and the wall thickness (t) of the reaction force pieces 5a, 5c on both sides is In comparison, the wall thickness (T) of the central reaction force piece 5b is large. Figure 4 is suitable for large vehicles, and similarly to Figure 3, three reaction force pieces 5a, 5b, 5c are provided, but the reaction force pieces 5a, 5c on both sides gradually move from the sides to the center. The wall thickness is made large (from t ₁ to t ₂ ), and as the central pressure piece 5b is similarly moved to the center, the wall thickness becomes gradually large (from T ₁ to T ₂ ). Note that T ₁ is t ₂
It is set to be larger. Therefore, the surface pressure applied to the pad 9 also becomes uniform in the case of FIGS. 3 and 4, and uneven wear of the pad 9 is reduced.

〔考案の効果〕[Effect of idea]

上記したように、本考案の反力片は、中央にむ
かつて肉厚が大となるので、パツドの偏摩耗、特
に凹摩耗を防止でき、パツドの寿命が向上すると
いう効果がある。 As mentioned above, since the reaction force piece of the present invention becomes thicker toward the center, it is possible to prevent uneven wear of the pad, especially concave wear, and has the effect of improving the life of the pad.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の縦断面図、第２図は本考案の
要部である作動部側のパツドに均一な反力を加え
る反力片を示す断面図、第３，４図は第２図の変
形例を夫々示す断面図である。１……デイスク、２……キヤリパ、３……ブリ
ツジ、４……作動部、５……反作動部、８，９…
…パツド、５ａ，５ｂ，５ｃ……反力片、１０…
…ピストン。 Fig. 1 is a longitudinal sectional view of the present invention, Fig. 2 is a sectional view showing a reaction force piece that applies a uniform reaction force to the pad on the actuating part side, which is the main part of the invention, and Figs. FIG. 7 is a cross-sectional view showing a modification of the figure. 1... Disc, 2... Caliper, 3... Bridge, 4... Actuating part, 5... Reacting part, 8, 9...
...Pad, 5a, 5b, 5c...Reaction force piece, 10...
…piston.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

作動部にマスタシリンダからの液圧により作動
可能なピストンを有するキヤリパの反作動部に、
２本以上の反力片をそなえたデイスクブレーキ装
置において、ブレーキ作動時デイスクにパツドを
係合させる前記反力片の中央部を厚く周辺を薄く
してなるデイスクブレーキ装置。 The reaction part of the caliper has a piston that can be actuated by hydraulic pressure from the master cylinder in the actuation part.
A disc brake device equipped with two or more reaction pieces, in which the reaction pieces engage a pad with the disk when the brake is actuated, and the reaction pieces are thick at the center and thin at the periphery.