JPH04159169A - Power pressure assisted type operating device - Google Patents
Power pressure assisted type operating deviceInfo
- Publication number
- JPH04159169A JPH04159169A JP2283355A JP28335590A JPH04159169A JP H04159169 A JPH04159169 A JP H04159169A JP 2283355 A JP2283355 A JP 2283355A JP 28335590 A JP28335590 A JP 28335590A JP H04159169 A JPH04159169 A JP H04159169A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- booster
- piping
- connector
- power pressure
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 238000013016 damping Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Braking Systems And Boosters (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、車両等のブレーキ装置等で使用される動力圧
補助型作動装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power pressure auxiliary actuating device used in a brake device of a vehicle or the like.
この種の動力圧補助型作動装置としては、従来、特許１
−２８２０６２号公報に開示されたものがある。Conventionally, this type of power pressure auxiliary actuating device has been patented as follows:
There is one disclosed in Japanese Patent No. -282062.
ここに開示されている動力圧補助型作動装置は、モータ
により駆動され、作動液リザーバから配管を通して作動
液を吸入して圧液を吐出するポンプを備えた電動ポンプ
を有し、この圧液をシリンダ本体に組込んだマスタシリ
ンダ部と液圧式ブースタ部とを有する装置の該ブースタ
部のアキュムレータ室に配管を通して供給する構成とな
っている。The power pressure auxiliary actuating device disclosed herein has an electric pump that is driven by a motor and includes a pump that sucks hydraulic fluid from a hydraulic fluid reservoir through piping and discharges pressure fluid. It is configured to supply the liquid through piping to the accumulator chamber of the booster section of an apparatus having a master cylinder section and a hydraulic booster section built into the cylinder body.
［発明が解決しようとする課題］
このように、電動ポンプで倍力作用の圧液を倍力装置へ
供給する装置では、電動ポンプと倍力装置側とを別々に
車体に取付けても、電動ポンプの振動が配管を通して倍
力装置側へ伝達されるので、この振動がブレーキペダル
に伝わって運転者に不快感を与えることがあり、また倍
力装置等に組付けられている密封部材の耐久性の低下を
招いたりする。[Problems to be Solved by the Invention] In this way, in a device that uses an electric pump to supply pressure fluid for boosting to a booster, even if the electric pump and the booster are installed separately on the vehicle body, Since the vibrations of the pump are transmitted to the booster through the piping, this vibration may be transmitted to the brake pedal, causing discomfort to the driver, and may also reduce the durability of the sealing member installed in the booster, etc. It can lead to a decline in sexuality.
本発明は上記問題を解消するためになされたもので、ポ
ンプ側から倍力装置側への配管を通しての振動の伝達を
従来に比し低減させることかで゛きる動力圧補助型作動
装置を提供することを目的とする。The present invention has been made in order to solve the above problems, and provides a power pressure auxiliary actuating device that can reduce the transmission of vibration through piping from the pump side to the booster side compared to the conventional one. The purpose is to
本発明は上記目的を達成するため、液圧式倍力装置と、
外部動力により駆動され加圧液を吐出するポンプと、液
圧式倍力装置とポンプとを連絡して配置される配管とを
有する動力圧補助型作動装置において、前記配管の一部
を弾性的に支持する構成とした。In order to achieve the above object, the present invention includes a hydraulic booster,
In a power pressure auxiliary actuating device that includes a pump that is driven by external power and discharges pressurized liquid, and piping arranged to connect the hydraulic booster and the pump, a part of the piping is elastically connected. The structure is designed to support the
請求項２では、配管の途中を弾性的に支持し、請求項３
では、配管の液圧式倍力装置側端部を弾性的に支持した
。In claim 2, the pipe is elastically supported in the middle, and claim 3
In this case, the end of the piping on the side of the hydraulic booster was elastically supported.
請求項４では、配管の端部に形成した接続部と、液圧式
倍力装置の配管接続部とを摺動可能に密に嵌合させると
ともに、摺動方向に一対の弾性部材を配設して弾力的に
支持する構成とし、請求項５では、配管のポンプ側端部
またはポンプの吐出部に絞りを形成した。In claim 4, the connecting portion formed at the end of the piping and the piping connecting portion of the hydraulic booster are slidably and tightly fitted together, and a pair of elastic members are disposed in the sliding direction. According to a fifth aspect of the present invention, a restriction is formed at the end of the piping on the pump side or at the discharge portion of the pump.
本発明では、液圧式倍力装置とポンプとを連絡する配管
の一部を弾性的に支持するので、ポンプからの振動はこ
の弾性的支持部で吸収され、この支持部から倍力装置側
への伝達は低減される。In the present invention, a part of the piping that connects the hydraulic booster and the pump is elastically supported, so vibrations from the pump are absorbed by this elastic support and are transmitted from the support to the booster. transmission is reduced.
また、配管のポンプ側端部またはポンプの吐出部に絞り
を形成すると、圧液の脈動が低減されるので、その分、
倍力装置側への伝達される振動はより低減される。In addition, if a restriction is formed at the end of the piping on the pump side or at the discharge part of the pump, the pulsation of the pressure fluid will be reduced.
The vibrations transmitted to the booster side are further reduced.
以下、本発明の１実施例を図面を参照して説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第１図において、１はトーボード、２はマスタシリンダ
、３は作動液リザーバ、４はマスタシリンダ２に組付け
た液圧式倍力装置Ｈ／Ｂ、５はブレーキペダル、６は倍
力装置４に支持された電動ポンプ、７はアキュムレータ
である。８は高圧ホースからなる配管であって、電動ポ
ンプ６のポンプＰの吐出口６Ａから倍力装置４側へ伸び
、接続具９を介して倍力装置４の接続部４Ａに接続され
ている。２Ａ、２Ｂはマスタシリンダ２の吐出口である
。In Fig. 1, 1 is the toe board, 2 is the master cylinder, 3 is the hydraulic fluid reservoir, 4 is the hydraulic booster H/B assembled to the master cylinder 2, 5 is the brake pedal, and 6 is the booster 4. The supported electric pump, 7 is an accumulator. A piping 8 is a high-pressure hose, which extends from the discharge port 6A of the pump P of the electric pump 6 toward the booster 4, and is connected to the connecting portion 4A of the booster 4 via a connector 9. 2A and 2B are discharge ports of the master cylinder 2.
この電動ポンプ６は、第２図に示す如く、弾性連結体Ａ
とＢとで倍力装置４の本体１０に吊下げ支持されている
。この弾性連結体Ａは一端（上端が）倍力装置に固定さ
れる支持枠１１と一端（下端）が電動ポンプ６のモータ
Ｍ側に固定される支持枠１２との他方端相互を紙面表裏
方向に並ぶ複数個の弾性部材１３を介して連結してあり
、また連結体Ｂは一端（上端が）倍力装置４に固定され
る支持枠１４と一端（下端）が電動ポンプ６のポンプＰ
側に固定される支持枠１５との他方端相互を弾性部材１
６を介して連結しである。従って、電動ポンプ６は倍力
装置４に一体的に連結しであるが、電動ポンプ６の振動
は弾性部材１３．１６で吸収されることになり、弾性連
結体Ａ、Ｂを介しての倍力装置４への振動の伝達は充分
に小さ（なる。As shown in FIG. 2, this electric pump 6 has an elastic connector A.
and B are suspended and supported by the main body 10 of the booster 4. This elastic connecting body A has a support frame 11 whose one end (upper end) is fixed to the booster, and a support frame 12 whose one end (lower end) is fixed to the motor M side of the electric pump 6, and the other end of the support frame 12 is fixed to the motor M side of the electric pump 6. The connecting body B has one end (upper end) fixed to the support frame 14 fixed to the booster 4, and one end (lower end) connected to the pump P of the electric pump 6.
The elastic member 1 connects the other end with the support frame 15 fixed to the side.
It is connected via 6. Therefore, although the electric pump 6 is integrally connected to the booster 4, the vibration of the electric pump 6 is absorbed by the elastic members 13 and 16, and the vibration of the electric pump 6 is absorbed by the elastic members A and B. The transmission of vibrations to the force device 4 is sufficiently small.
第３図は配管８と倍力装置４との接続構造を示したもの
である。２０は接続具９のプラグであって、頭部２ＯＡ
と軸部２０Ｂおよびねじ部２０Ｃからなる外形を有し、
軸部２０Ｂの周面に開口してねじ部２０Ｃの下端に達す
る通路２１を形成されており、軸部２ＯＢには環状コネ
クタ２２がシールリング２３を介在して外嵌されている
。このコネクタ２２の上端と下端には外径を縮径したか
たちの嵌合用段部２４．２５を形成されており、この段
部２４．２５に、段部の高さより大きい厚さを持つ環状
弾性部材２６Ａ、２６Ｂが嵌着されている。コネクタ２
２には、更に、周面に開口する配管接続孔２７と該配管
接続孔２７と通路２１を連絡するための半径方向の通路
２日が形成されている。コネクタ２２の配管接続孔２７
には鋼管が溶接され、この鋼管に配管８の一端が接続さ
れる。この例では、配管８を溶接した鋼管により配管接
続孔２７に接続しているが、第４図に示す如くコネクタ
２２にボス部２９を形成して接続具８０を螺合接続し、
この接続具８０に配管を接続するようにしてもよい。６
０はガスケットである。FIG. 3 shows the connection structure between the piping 8 and the booster 4. 20 is a plug of the connector 9, and the head 2OA
It has an outer shape consisting of a shaft portion 20B and a threaded portion 20C,
A passage 21 is formed in the circumferential surface of the shaft portion 20B and reaches the lower end of the threaded portion 20C, and an annular connector 22 is externally fitted onto the shaft portion 2OB with a seal ring 23 interposed therebetween. The upper and lower ends of this connector 22 are formed with fitting step portions 24.25 having a reduced outer diameter. Members 26A and 26B are fitted. Connector 2
2 is further formed with a pipe connection hole 27 opening on the circumferential surface and a radial passage for communicating the pipe connection hole 27 and the passage 21. Piping connection hole 27 of connector 22
A steel pipe is welded to the steel pipe, and one end of the piping 8 is connected to this steel pipe. In this example, the piping 8 is connected to the piping connection hole 27 by a welded steel pipe, but as shown in FIG.
A pipe may be connected to this connector 80. 6
0 is a gasket.
この接続具９はプラグ２０のねじ部２０Ｃを倍力装置４
の接続部４Ａの接続孔４ａに螺入して該接続部４Ａに取
着される。この取着状態で、接続部４Ａとコネクタ２２
との下面との間には弾性部材２６Ｂが介在し、プラグ２
０の頭部２ＯＡとコネクタ２２の上面との間には弾性部
材２６Ａが介在し、コネクタ２２の内周面とプラグ２０
の外周面との間にはシールリング２３が介在しているの
で、配管８の振動につれてコネクタ２２が振動しても、
この振動は弾性部材２６Ａ、２６Ｂ、シールリング２３
で吸収されることになり、プラグ２０には殆ど伝達され
ず、従って、ポンプ６から配管８を通して倍力装置４に
伝わる振動は楊めて小さい。This connector 9 connects the threaded portion 20C of the plug 20 to the booster 4.
It is screwed into the connection hole 4a of the connection part 4A and attached to the connection part 4A. In this attached state, the connection part 4A and the connector 22
An elastic member 26B is interposed between the lower surface of the plug 2 and the lower surface of the plug 2.
An elastic member 26A is interposed between the head 2OA of the connector 20 and the upper surface of the connector 22, and the elastic member 26A is interposed between the inner peripheral surface of the connector 22 and the plug 20.
Since the seal ring 23 is interposed between the outer peripheral surface of the connector 22 and the outer circumferential surface of the
This vibration is caused by the elastic members 26A, 26B and the seal ring 23.
Therefore, the vibration transmitted from the pump 6 to the booster 4 through the piping 8 is very small.
第５図は接続具９の他の例を示したもので、この接続具
は、第３図のものと同様にプラグ３０と環状のコネクタ
３１を有する。コネクタ３工はプラグ３０の外径より大
きい内径を有し、半径方向に貫通する配管接続部３２に
配管８の接続端を挿入される。プラグ３０は、その軸部
３０Ｂの頭部３０Ａ側寄りとねじ部３０Ｃ側寄りにそれ
ぞれシールを兼ねる弾性部材３３Ａ、３３Ｂが嵌着され
ており、両弾性部材３３Ａ、３３Ｂ間に、配管８の接続
端が開口し、プラグ３０の通路３４に連通する空間３５
を区画している。FIG. 5 shows another example of the connector 9, which has a plug 30 and an annular connector 31 similar to the one in FIG. The connector 3 has an inner diameter larger than the outer diameter of the plug 30, and the connecting end of the pipe 8 is inserted into a pipe connecting portion 32 penetrating in the radial direction. In the plug 30, elastic members 33A and 33B which also serve as seals are fitted to the head 30A side and the screw portion 30C side of the shaft portion 30B, respectively, and between the elastic members 33A and 33B, the piping 8 is connected. A space 35 that is open at the end and communicates with the passage 34 of the plug 30
are divided.
この接続具９は、接続部４Ａへの取付は状態で、プラグ
３０の頭部３０Ａとコネクタ３１の間、接続部４Ａとコ
ネクタ３１の間にシールリング３６．３７が介在する。This connector 9 is attached to the connecting portion 4A with seal rings 36 and 37 interposed between the head 30A of the plug 30 and the connector 31 and between the connecting portion 4A and the connector 31.
第６図は、接続具９の更に他の例を示したもので、配管
８を接続されるコネクタ４０は、接続部４Ａの接続孔４
ａに摺動可能に挿入し、上端部から左右に突出する腕部
４１．４２を遊貫するボルト４３．４４で接続部４Ａに
固定するが、腕部４１と接続部４Ａとの間およびボルト
４３の頭部との間に弾性部材４５Ａ、４５Ｂを介在して
ボルト４３を締付ける。同様に、腕部４２と接続部４Ａ
との間およびボルト４４０頭部との間に弾性部材４７Ａ
、４７Ｂを介在してボルトを締付ける。FIG. 6 shows still another example of the connector 9, in which the connector 40 to which the piping 8 is connected is connected to the connecting hole 4 of the connecting portion 4A.
a, and the arms 41, 42 protruding from the upper end to the left and right are fixed to the connecting part 4A with loosely penetrating bolts 43, 44. The bolt 43 is tightened with elastic members 45A and 45B interposed between the bolt 43 and the head of the bolt 43. Similarly, the arm portion 42 and the connecting portion 4A
and between the elastic member 47A and the head of the bolt 440.
, 47B and tighten the bolts.
この接続構造では、コネクタ４０は配管８の振動により
接続部４Ａの接続孔４ａ内を摺動することがあるが、こ
のコネクタ４０の腕部４１は弾性部材４５Ａ、４５Ｂを
介在して、また腕部４２は弾性部材４７Ａ、４７Ｂを介
在して接続部４Ａに連結されているので、コネクタ４０
の振動は倍力装Ｗ４へは殆ど伝達しない。In this connection structure, the connector 40 may slide inside the connection hole 4a of the connection part 4A due to the vibration of the pipe 8, but the arm part 41 of this connector 40 is Since the portion 42 is connected to the connecting portion 4A via the elastic members 47A and 47B, the connector 40
Almost no vibration is transmitted to the booster W4.
以上の第３図乃至第６図の実施例において、配管の接続
手段は、配管の振動方向を考慮し、この振動方向とコネ
クタの弾力支持方向とが一致するようにすればよい。In the embodiments shown in FIGS. 3 to 6 above, the pipe connecting means may be arranged in consideration of the vibration direction of the pipe so that the vibration direction coincides with the direction of elastic support of the connector.
第７図は本発明の他の実施例を示したもので、配管を途
中で弾性的に支持している点において前記の各場合と相
違する。電動ポンプ６は倍力装置４と別々に図示しない
車体に支持されており、ポンプＰから吐出される作動液
は吐出口６Ｂに設けた絞り５０を通して配管８Ａへ吐出
されて一次アキュムレータ５１に供給され、この−次ア
キュムレータ５１から配管８Ｂを通して倍力装置４に供
給される。配管８Ｂの倍力装置４の近傍は第８図に拡大
して示す筒状弾性部材５２を介在して支持筒５３に支持
されており、この支持筒５３は該支持筒５３からその軸
方向に伸びる支持枠５４のＬ字端部５５を、倍力装置４
の本体の外周に突設した突起５６に弾性部材５７を介在
してボルト５８で固定することにより倍力装置４に支持
しである。弾性部材５７はＬ字端部５５の孔５５Ａに嵌
着した環体であって、プレート５９を有する金属製の筒
６０がプレート５９を環体外端面に係合して挿入されて
いる。FIG. 7 shows another embodiment of the present invention, which differs from the above-described embodiments in that the piping is elastically supported midway. The electric pump 6 is supported by the vehicle body (not shown) separately from the booster 4, and the working fluid discharged from the pump P is discharged to the pipe 8A through a throttle 50 provided at the discharge port 6B, and is supplied to the primary accumulator 51. , is supplied from this -order accumulator 51 to the booster 4 through the piping 8B. The vicinity of the booster 4 of the pipe 8B is supported by a support tube 53 with a cylindrical elastic member 52 shown enlarged in FIG. The L-shaped end 55 of the extending support frame 54 is connected to the booster 4
It is supported by the booster 4 by interposing an elastic member 57 to a protrusion 56 protruding from the outer periphery of the main body and fixing it with a bolt 58. The elastic member 57 is a ring body fitted into the hole 55A of the L-shaped end portion 55, and a metal tube 60 having a plate 59 is inserted with the plate 59 engaged with the outer end surface of the ring body.
本実施例では、配管８Ｂの倍力装置４近傍を弾性部材５
７で支持し、この弾性部材５７を保持する支持筒５３は
弾性部材５７を介して倍力装置４に連結しであるので、
配管８Ｂに伝達された振動が倍力装置４に伝達されるこ
とは殆ど無い。In this embodiment, the elastic member 5
7 and which holds the elastic member 57 is connected to the booster 4 via the elastic member 57.
The vibrations transmitted to the pipe 8B are hardly transmitted to the booster 4.
また、本実施例では、ポンプＰの吐出口６Ｂに絞り５０
を設けであるので、ポンプＰから吐出される圧液の脈動
が平滑化されることになり、その分、配管８Ａ、８Ｂの
振動が低減するので、倍力装置４の振動は一層低減する
。In addition, in this embodiment, a throttle 50 is provided at the discharge port 6B of the pump P.
As a result, the pulsation of the pressure liquid discharged from the pump P is smoothed, and the vibrations of the pipes 8A and 8B are reduced accordingly, so that the vibrations of the booster 4 are further reduced.
なお、この絞りは配管８Ａのポンプ側端部に設けてもよ
く、前記した各側のポンプＰの吐出口もしくは配管８の
ポンプ側端部に設けて同様の効果を得ることができる。Note that this throttle may be provided at the pump side end of the pipe 8A, or may be provided at the discharge port of the pump P on each side described above or at the pump side end of the pipe 8 to obtain the same effect.
本発明は以上説明した通り、ポンプ吐出口と倍力装置と
を連絡する配管の一部を弾性的に支持したことにより、
配管に伝達されるポンプ側からの振動をこの弾性支持部
分で大幅に減衰させることができるので、上記振動の倍
力装置側への伝達は従来に比して著しく低減し、この振
動がブレーキペダルに伝わって運転者に不快感を与えた
り、また倍力装置等に組付けられている密封部材の耐久
性の低下を招いたりすることがなくなる。As explained above, the present invention elastically supports a part of the piping that connects the pump outlet and the booster, so that
This elastic support part can significantly attenuate the vibrations from the pump side that are transmitted to the piping, so the transmission of the vibrations to the booster side is significantly reduced compared to conventional systems, and this vibration is transmitted to the brake pedal. This eliminates the possibility of causing discomfort to the driver or reducing the durability of the sealing member assembled to the booster or the like.
第１図は本発明の実施例を示す側面図、第２図は上記実
施例の電動ポンプと倍力装置との連結構造を示す図、第
３〜第６図は上記実施例における接続具の断面図、第７
図は本発明の他の実施例を示す構成図、第８図は第７図
の実施例における要部の拡大図である。
２−マスタシリンダ、４−液圧式倍力装置、３−電動ポ
ンプ、４Ａ−液圧式倍力装置の配管接続部、８．８Ａ、
８Ｂ−配管、
２０．３〇−接続具のプラグ、２２．３１．４０−接続
具のコネクタ、２６Ａ、２６Ｂ、−弾性部材、３３Ａ、
３３Ｂ−・−弾性部材４５Ａ、４５Ｂ、４７Ａ、 ４
７ Ｂ−弾性部材、５２．５７−弾性部材、５３−・支
持筒、５〇−絞り。
第１図
第３！！Ｉ
第４ｒＩ！ＪFig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is a diagram showing a connection structure between the electric pump and the booster in the above embodiment, and Figs. Cross section, 7th
The figure is a block diagram showing another embodiment of the present invention, and FIG. 8 is an enlarged view of the main part of the embodiment of FIG. 7. 2-master cylinder, 4-hydraulic booster, 3-electric pump, 4A-hydraulic booster piping connection, 8.8A,
8B-Piping, 20.30-Plug of connector, 22.31.40-Connector of connector, 26A, 26B,-Elastic member, 33A,
33B--Elastic members 45A, 45B, 47A, 4
7 B-Elastic member, 52.57-Elastic member, 53-・Support cylinder, 50-Aperture. Figure 1 3rd! ! I 4th rI! J
Claims (5)
作動を助ける液圧式倍力装置と、外部動力により駆動さ
れ加圧液を吐出するポンプと、液圧式倍力装置とポンプ
とを連絡して配置される配管とを有する動力圧補助型作
動装置において、前記配管の一部を弾性的に支持するよ
うにした動力圧補助型作動装置。(1) A hydraulic booster that is attached to the vehicle body and helps operate the master cylinder in response to input, a pump that is driven by external power and discharges pressurized fluid, and a hydraulic booster that connects the pump. What is claimed is: 1. A power pressure auxiliary actuating device having a piping arranged therein, wherein a part of the piping is elastically supported.
力圧補助型作動装置。(2) The power pressure auxiliary actuating device according to claim 1, wherein a portion of the piping is elastically supported.
請求項１記載の動力圧補助型作動装置。(3) The power pressure auxiliary actuator according to claim 1, wherein the end of the piping on the side of the hydraulic booster is elastically supported.
作動を助ける液圧式倍力装置と、外部動力により駆動さ
れ加圧液を吐出するポンプと、液圧式倍力装置とポンプ
とを連絡して配置される配管とを有する動力圧補助型作
動装置において、前記配管の端部に形成した接続部と、
液圧式倍力装置の配管接続部とを摺動可能に密に嵌合さ
せるとともに、摺動方向に一対の弾性部材を配設して弾
力的に支持するようにした動力圧補助型作動装置。(4) A hydraulic booster that is attached to the vehicle body and helps operate the master cylinder in response to input, a pump that is driven by external power and discharges pressurized fluid, and a hydraulic booster that connects the pump. A power pressure auxiliary actuator having a piping arranged therein, a connection portion formed at an end of the piping;
A power pressure auxiliary actuating device in which a piping connection portion of a hydraulic booster is slidably and closely fitted, and a pair of elastic members are disposed in the sliding direction to elastically support the actuating device.
を形成した請求項１乃至４記載の動力圧補助型作動装置
。(5) The power pressure assisted actuating device according to any one of claims 1 to 4, wherein a restriction is formed at the end of the piping on the pump side or at the discharge portion of the pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2283355A JPH04159169A (en) | 1990-10-23 | 1990-10-23 | Power pressure assisted type operating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2283355A JPH04159169A (en) | 1990-10-23 | 1990-10-23 | Power pressure assisted type operating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04159169A true JPH04159169A (en) | 1992-06-02 |
Family
ID=17664414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2283355A Pending JPH04159169A (en) | 1990-10-23 | 1990-10-23 | Power pressure assisted type operating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04159169A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016196297A (en) * | 2016-07-13 | 2016-11-24 | 日立オートモティブシステムズ株式会社 | Brake unit |
-
1990
- 1990-10-23 JP JP2283355A patent/JPH04159169A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016196297A (en) * | 2016-07-13 | 2016-11-24 | 日立オートモティブシステムズ株式会社 | Brake unit |
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