JP3660344B2

JP3660344B2 - Brake hydraulic pressure control device for vehicles

Info

Publication number: JP3660344B2
Application number: JP2003108096A
Authority: JP
Inventors: 勉天野; 淳山下
Original assignee: Nissin Kogyo Co Ltd
Current assignee: Nissin Kogyo Co Ltd
Priority date: 2003-04-11
Filing date: 2003-04-11
Publication date: 2005-06-15
Anticipated expiration: 2018-12-01
Also published as: JP2003267203A

Description

【０００１】
【発明の属する技術分野】
本発明は、乗用車両や自動二輪車等の車両のブレーキ液圧制御装置に関し、特に、車輪ブレーキのブレーキ液圧を制御するための制御弁手段が設けられるハウジングの一面に、前記制御弁手段を制御する電子制御ユニットを少なくとも収納する収納室をハウジングとの間に形成する合成樹脂製のカバーが取付けられ、前記ソレノイド部に少なくとも接続される複数の第１端子を有するカバー側コネクタに、複数の外部導線にそれぞれ連なる複数の第２端子を有する外部導線側コネクタが、第１および第２端子を相互に電気的に接続すべく着脱可能に装着されるようにしたものの改良に関する。
【０００２】
【従来の技術】
従来、かかるブレーキ液圧制御装置は、たとえば特許文献１等で既に知られている。
【０００３】
【特許文献１】
特開平２−２１６３５４号公報
【０００４】
【発明が解決しようとする課題】
ところで、このようなブレーキ液圧制御装置では、カバー側コネクタの第１端子と外部導線側コネクタの第２端子とが、両コネクタのコネクタハウジング間に形成されるコネクタ室で相互に電気的に接続されるのであるが、コネクタ室内に外部からの水が浸入して第１および第２端子の接続部に付着すると、通電不良が生じる可能性がある。そこで、両コネクタの接続時にはコネクタ室を密閉状態に保持するのが一般的である。
【０００５】
ところが、上述のようにコネクタ室を密閉状態に保持すると、第１および第２端子間での通電による温度変化によりコネクタ室の内圧が変化し、両コネクタのコネクタハウジングがそれぞれ変形し、コネクタ室のシールが不充分となる可能性がある。
【０００６】
また外部導線は導線が絶縁チューブで被覆されて成るものであり、該外部導線の外部導線側コネクタとは反対側の端部が水没したり、前記端部に水が付着したりすると、前記コネクタ室の内圧変化に伴って、絶縁チューブおよび導線間の間隙での毛細管現象により、外部の水がコネクタ室に吸い込まれる可能性がある。
【０００７】
本発明は、かかる事情に鑑みてなされたものであり、カバー側コネクタおよび外部導線側コネクタ間のコネクタ室の内圧変化を抑え、コネクタ室への水の吸込みを防止した車両用ブレーキ液圧制御装置を提供することを目的とする。
【０００８】
【課題を解決するための手段】
上記目的を達成するために、請求項１記載の発明は、マスタシリンダおよび車輪ブレーキ間を連通するとともに前記車輪ブレーキおよびリザーバ間を遮断する状態、マスタシリンダおよび車輪ブレーキ間を遮断するとともに前記車輪ブレーキおよびリザーバ間を連通する状態、ならびに前記車輪ブレーキを前記マスタシリンダおよび車輪ブレーキから遮断する状態を切換可能な制御弁手段が、ハウジングに設けられ、前記制御弁手段を制御する電子制御ユニットを少なくとも収納する収納室を前記ハウジングとの間に形成する合成樹脂製のカバーが前記ハウジングの一面に取付けられ、前記カバーに一体に連設される第１コネクタハウジングと、前記電子制御ユニットに少なくとも接続されて第１コネクタハウジング内に収容、支持される複数の第１端子とでカバー側コネクタが構成され、前記第１コネクタハウジングに着脱可能に係合する第２コネクタハウジングと、複数の外部導線に個別に連なって第２コネクタハウジング内に収容、支持される複数の第２端子とで外部導線側コネクタが構成され、カバー側および外部導線側コネクタの接続状態で前記両コネクタハウジング間に形成されるコネクタ室内で前記第１および第２端子が相互に電気的に接続され、前記両コネクタハウジング間ならびに前記各外部導線の第２コネクタハウジングへの挿入部がそれぞれシールされ、更に前記ハウジングには、前記リザーバに吸収されたブレーキ液を前記マスタシリンダ及び前記制御弁手段間に還流させるポンプを駆動する電動モータが取付けられる車両用ブレーキ液圧制御装置において、前記収納室が前記コネクタ室と前記電動モータ内とに連通しており、それら収納室とコネクタ室と電動モータ内とを外部に連通させる共通の通気孔が前記ハウジングに設けられることを特徴とする。
【０００９】
このような請求項１記載の発明の構成によれば、収納室がコネクタ室と電動モータ内とに連通しており、しかもそれら収納室とコネクタ室と電動モータ内とが、ハウジングに設けた共通の通気孔により外部に連通している。このようにコネクタ室が収納室に連通し、更に外部にも連通しているので、コネクタ室および収納室の内圧を外部の圧力に等しくして内圧の変化をより効果的に抑えることができ、したがってコネクタハウジングの変形に伴なうシール不良が生じたり、外部導線の絶縁チューブおよび導線間の間隙からの毛細管現象による水の吸込みが生じたりするのを防止できる。
【００１０】
また請求項２記載の発明は、マスタシリンダおよび車輪ブレーキ間を連通するとともに前記車輪ブレーキおよびリザーバ間を遮断する状態、マスタシリンダおよび車輪ブレーキ間を遮断するとともに前記車輪ブレーキおよびリザーバ間を連通する状態、ならびに前記車輪ブレーキを前記マスタシリンダおよび車輪ブレーキから遮断する状態を切換可能な制御弁手段が、ハウジングに設けられ、前記制御弁手段を制御する電子制御ユニットを少なくとも収納する収納室を前記ハウジングとの間に形成する合成樹脂製のカバーが前記ハウジングの一面に取付けられ、前記カバーに一体に連設される第１コネクタハウジングと、前記電子制御ユニットに少なくとも接続されて第１コネクタハウジング内に収容、支持される複数の第１端子とでカバー側コネクタが構成され、前記第１コネクタハウジングに着脱可能に係合する第２コネクタハウジングと、複数の外部導線に個別に連なって第２コネクタハウジング内に収容、支持される複数の第２端子とで外部導線側コネクタが構成され、カバー側および外部導線側コネクタの接続状態で前記両コネクタハウジング間に形成されるコネクタ室内で前記第１および第２端子が相互に電気的に接続され、前記両コネクタハウジング間ならびに前記各外部導線の第２コネクタハウジングへの挿入部がそれぞれシールされ、更に前記ハウジングの他面には、前記リザーバに吸収されたブレーキ液を前記マスタシリンダ及び前記制御弁手段間に還流させるポンプを駆動すべく前記電子制御ユニットによって作動制御される電動モータが取付けられる車両用ブレーキ液圧制御装置において、前記カバーには、前記コネクタ室を前記収納室に連通させる連通孔が設けられ、前記電動モータと前記電子制御ユニットとの間を接続するモータ用コネクタが、前記ハウジングにその一面と他面とに亘って設けた貫通孔を貫通していて、その貫通孔の内面と該モータ用コネクタとの間に、該収納室に連通する通気路が設けられ、この通気路を外部に連通させる通気孔が、該通気孔の前記通気路側への開口端を前記モータ用コネクタの側面に対向させて前記ハウジングに設けられることを特徴とする。
かかる構成によれば、電動モータと収納室内の電子制御ユニット間を接続するモータ用コネクタが、ハウジングにその一面と他面とに亘って設けた貫通孔を貫通していて、その貫通孔の内面と該モータ用コネクタとの間に、該収納室に連通する通気路が設けられ、この通気路を外部に連通させる通気孔が、該通気孔の通気路側への開口端をモータ用コネクタの側面に対向させてハウジングに設けられる。このようにコネクタ室が収納室に連通し、更に外部にも連通しているので、コネクタ室および収納室の内圧を外部の圧力に等しくして内圧の変化をより効果的に抑えることができ、従って、コネクタハウジングの変形に伴なうシール不良が生じたり、外部導線の絶縁チューブおよび導線間の間隙からの毛細管現象による水の吸込みが生じたりするのを防止できる。
【００１１】
【発明の実施の形態】
以下、本発明の実施の形態を、添付図面に示した本発明の一実施例に基づいて説明する。
【００１２】
図１〜図１２は本発明の一実施例を示すものであり、図１は乗用車両のブレーキ装置のブレーキ液圧回路図、図２はブレーキ液圧制御装置の側面図、図３は図２の３矢視図、図４は図２の４矢視図、図５は図４の５−５線断面図、図６は図４の６−６線断面図、図７は図６の７−７線断面図、図８は図４の８−８線断面図、図９は図８の９矢視部拡大図、図１０は図９の１０−１０線拡大断面図、図１１は図２の１１−１１線拡大断面図、図１２は図９の要部拡大図である。
【００１３】
先ず図１において、タンデム型のマスタシリンダＭは、車両運転者がブレーキペダルＰに加える踏力に応じたブレーキ液圧を発生する第１および第２出力ポート１₁、１₂を備えており、左前輪用車輪ブレーキＢ₁、右後輪用車輪ブレーキＢ₂、右前輪用車輪ブレーキＢ₃および左後輪用車輪ブレーキＢ₄と、前記第１および第２出力ポート１₁，１₂に個別に接続された第１および第２出力液圧路２₁，２₂との間にブレーキ液圧制御装置３が設けられ、該ブレーキ液圧制御装置３および右、左後輪用車輪ブレーキＢ₂，Ｂ₄間に、第１および第２比例減圧弁４₁，４₂がそれぞれ介設される。
【００１４】
ブレーキ液圧制御装置３は、左前輪用車輪ブレーキＢ₁、右後輪用車輪ブレーキＢ₂、右前輪用車輪ブレーキＢ₃および左後輪用車輪ブレーキＢ₄に個別に対応した第１、第２、第３および第４常開型電磁弁５₁〜５₄と、各常開型電磁弁５₁〜５₄にそれぞれ並列に接続される第１、第２、第３および第４チェック弁７₁〜７₄と、前記各車輪ブレーキＢ₁〜Ｂ₄に個別に対応した第１、第２、第３および第４常閉型電磁弁６₁〜６₄と、第１および第２出力液圧路２₁，２₂にそれぞれ個別に対応した第１および第２リザーバ８₁，８₂と、第１および第２リザーバ８₁，８₂に吸入弁１０₁，１０₂をそれぞれ介して接続されるプランジャ型の第１および第２ポンプ１１₁，１１₂と、両ポンプ１１₁，１１₂を駆動する共通一個の電動モータ１２と、第１および第２ポンプ１１₁，１１₂に吐出弁１３₁，１３₂をそれぞれ介して接続される第１および第２ダンパ１４₁，１４₂と、前記第１および第２出力液圧路２₁，２₂と第１および第２ダンパ１４₁，１４₂との間にそれぞれ介裝される第１および第２オリフィス１５₁，１５₂と、各常開型電磁弁５₁〜５₄、各常閉型電磁弁６₁〜６₄および電動モータ１２の作動を制御する電子制御ユニット１６とを備える。
【００１５】
第１常開型電磁弁５₁は、第１出力液圧路２₁および左前輪用車輪ブレーキＢ₁間に設けられ、第２常開型電磁弁５₂は、第１出力液圧路２₁および第１比例減圧弁４₁間に設けられ、第３常開型電磁弁５₃は、第２出力液圧路２₂および右前輪用車輪ブレーキＢ₃間に設けられ、第４常開型電磁弁５₄は、第２出力液圧路２₂および第２比例減圧弁４₂間に設けられる。
【００１６】
また第１〜第４チェック弁７₁〜７₄は、対応する車輪ブレーキＢ₁〜Ｂ₄からマスタシリンダＭへのブレーキ液の流れを許容するようにして、各常開型電磁弁５₁〜５₄に並列に接続される。
【００１７】
第１常閉型電磁弁６₁は、左前輪用車輪ブレーキＢ₁および第１リザーバ８₁間に設けられ、第２常閉型電磁弁６₂は、第１比例減圧弁４₁および第１リザーバ８₁間に設けられ、第３常閉型電磁弁６₃は、右前輪用車輪ブレーキＢ₃および第２リザーバ８₂間に設けられ、第４常閉型電磁弁６₄は、第２比例減圧弁４₂および第２リザーバ８₂間に設けられる。
【００１８】
ところで、第１常開型電磁弁５₁および第１常閉型電磁弁６₁は共働して第１制御弁手段Ｖ₁を構成し、第２常開型電磁弁５₂および第２常閉型電磁弁６₂は共働して第２制御弁手段Ｖ₂を構成し、第３常開型電磁弁５₃および第３常閉型電磁弁６₃は共働して第３制御弁手段Ｖ₃を構成し、第４常開型電磁弁５₄および第４常閉型電磁弁６₄は共働して第４制御弁手段Ｖ₄を構成する。
【００１９】
このような制御弁手段Ｖ₁〜Ｖ₄は、各車輪がロックを生じる可能性のない通常ブレーキ時には、電子制御ユニット１６により、マスタシリンダＭおよび車輪ブレーキＢ₁〜Ｂ₄間を連通するとともに車輪ブレーキＢ₁〜Ｂ₄およびリザーバ８₁，８₂間を遮断する状態に制御される。すなわち各常開型電磁弁５₁〜５₄が消磁、開弁状態とされるとともに各常閉型電磁弁６₁〜６₄が消磁、閉弁状態とされ、マスタシリンダＭの第１出力ポート１₁から出力されるブレーキ液圧は、第１常開型電磁弁５₁を介して左前輪用車輪ブレーキＢ₁に作用するとともに、第２常開型電磁弁５₂および第１比例減圧弁４₁を介して右後輪用車輪ブレーキＢ₂に作用する。またマスタシリンダＭの第２出力ポート１₂から出力されるブレーキ液圧は、第３常開型電磁弁５₃を介して右前輪用車輪ブレーキＢ₃に作用するとともに、第４常開型電磁弁５₄および第２比例減圧弁４₂を介して左後輪用車輪ブレーキＢ₄に作用する。
【００２０】
上記ブレーキ中に車輪がロック状態に入りそうになったときに、各制御弁手段Ｖ₁〜Ｖ₄のうちロック状態に入りそうになった車輪に対応する制御弁手段は、電子制御ユニット１６により、マスタシリンダＭおよび車輪ブレーキＢ₁〜Ｂ₄間を遮断するとともに車輪ブレーキＢ₁〜Ｂ₄およびリザーバ８₁，８₂間を連通する状態に制御される。すなわち第１〜第４常開型電磁弁５₁〜５₄のうちロック状態に入りそうになった車輪に対応する常開型電磁弁が励磁、閉弁されるとともに、第１〜第４常閉型電磁弁６₁〜６₄のうち上記車輪に対応する常閉型電磁弁が励磁、開弁される。これにより、ロック状態に入りそうになった車輪のブレーキ液圧の一部が第１リザーバ８₁または第２リザーバ８₂に吸収され、ロック状態に入りそうになった車輪のブレーキ液圧が減圧されることになる。
【００２１】
またブレーキ液圧を一定に保持する際には、各制御弁手段Ｖ₁〜Ｖ₄は、電子制御ユニット１６により、車輪ブレーキＢ₁〜Ｂ₄をマスタシリンダＭおよびリザーバ８₁，８₂から遮断する状態に制御される。すなわち常開型電磁弁５₁〜５₄が励磁、閉弁されるとともに、常閉型電磁弁６₁〜６₄が消磁、閉弁されることになる。さらにブレーキ液圧を増圧する際には、常開型電磁弁５₁〜５₄が消磁、開弁状態とされるともに、常閉型電磁弁６₁〜６₄が消磁、閉弁状態とされればよい。
【００２２】
このように各制御弁手段Ｖ₁〜Ｖ₄を電子制御ユニット１６で制御することにより、車輪をロックさせることなく、効率良く制動することができる。
【００２３】
ところで、上述のようなアンチロックブレーキ制御中に、電動モータ１２は電子制御ユニット１６により作動せしめられる。この電動モータ１２の作動に伴って第１および第２ポンプ１１₁，１１₂が駆動されるので、第１および第２リザーバ８₁，８₂に吸収されたブレーキ液は、第１および第２ポンプ１１₁，１１₂に吸入され、次いで第１および第２ダンパ１４₁，１４₂側へ吐出され、第１および第２オリフィス１５₁，１５₂を経て第１および第２出力液圧路２₁，２₂に還流される。このようなブレーキ液の還流によって、第１および第２リザーバ８₁，８₂のブレーキ液の吸収によるブレーキペダルＰの踏み込み量の増加を防ぐことができる。しかも第１および第２ポンプ１１₁，１１₂の吐出圧の脈動は第１および第２ダンパ１４₁，１４₂、ならびに第１および第２オリフィス１５₁，１５₂の協働作用により減衰されるため、上記還流によってブレーキペダルＰの操作フィーリングが阻害されることはない。
【００２４】
図２〜図４において、ブレーキ液圧制御装置３は、たとえばアルミニウム合金等によりブロック状に形成されるハウジング２０を備えるものであり、このハウジング２０に、第１〜第４常開型電磁弁５₁〜５₄、それらの常開型電磁弁５₁〜５₄と制御弁手段Ｖ₁〜Ｖ₄を構成する第１〜第４常閉型電磁弁６₁〜６₄、、第１〜第４チェック弁７₁〜７₄、第１および第２リザーバ８₁，８₂、第１および第２ダンパ１４₁，１４₂、第１および第２オリフィス１５₁，１５₂、ならびに第１および第２ポンプ１１₁，１１₂が設けられる。またハウジング２０の一面２０ａには合成樹脂製のカバー２１が取付けられ、該カバー２１とは反対側でハウジング２０の他面２０ｂに電動モータ１２のモータケース２２が取付けられる。
【００２５】
図５〜図７を併せて参照して、第１〜第４常開型電磁弁５₁〜５₄は、弁部５ａにソレノイド部５ｂがそれぞれ連設されて成るものであり、ハウジング２０の一面２０ａに開口するようにして該ハウジング２０の上部に設けられる４つの装着孔２３…に各弁部５ａ…が収容され、各ソレノイド部５ｂ…はハウジング２０の一面２０ａから突出する。また第１〜第４常閉型電磁弁６₁〜６₄は、弁部６ａにソレノイド部６ｂがそれぞれ連設されて成るものであり、ハウジング２０の一面２０ａに開口するようにして該ハウジング２０の上部に設けられる４つの装着孔２４…に各弁部６ａ…が収容され、各ソレノイド部６ｂ…はハウジング２０の一面２０ａから突出する。しかも装着孔２３…が横方向に並んでハウジング２０に設けられるのに対し、装着孔２４…は、それらの装着孔２３…の下方で横方向に並んでハウジング２０に設けられており、第１〜第４常開型電磁弁５₁〜５₄および第１〜第４常閉型電磁弁６₁〜６₄は上下に並列してハウジング２０に装着されることになる。
【００２６】
第１リザーバ８₁は、制御弁手段Ｖ₁，Ｖ₂に対応する位置でハウジング２０の下部に配設され、第２リザーバ８₂は、制御弁手段Ｖ₃，Ｖ₄に対応する位置でハウジング２０の下部に配設される。而して両リザーバ８₁，８₂は、図５で示すように、ハウジング２０の一面２０ａに開口するようにして該ハウジング２０に設けられる有底のリザーバ穴２６と、該リザーバ穴２６の閉塞端との間にリザーバ室２７を形成してリザーバ穴２６に摺動可能に嵌合される有底円筒状のピストン２８と、リザーバ穴２６の開口端部に嵌合される受け部材２９と、該受け部材２９のリザーバ穴２６からの抜け出しを阻止するようにしてリザーバ穴２６の開口端縁に装着される止め輪３０と、受け部材２９およびピストン２８間に縮設されるリザーバばね３１とでそれぞれ構成されるものであり、両リザーバ８₁，８₂のリザーバ室２７…が第１および第２ポンプ１１₁，１１₂に接続される。
【００２７】
第１ダンパ１４₁は、制御弁手段Ｖ₁，Ｖ₂および第１リザーバ８₁間に対応する位置でハウジング２０に配設され、第２ダンパ１４₂は、制御弁手段Ｖ₃，Ｖ₄および第２リザーバ８₂間に対応する位置でハウジング２０に配設される。而して両ダンパ１４₁，１４₂は、図６および図７で示すように、ハウジング２０の一面２０ａに開口するようにして該ハウジング２０に設けられる有底のダンパ穴３３と、該ダンパ穴３３の閉塞端との間にダンパ室３４を形成してダンパ穴３３に摺動可能に嵌合されるピストン３５と、ダンパ穴３３の開口端部に嵌合される受け部材３６と、該受け部材３６のダンパ穴３３からの抜け出しを阻止するようにしてダンパ穴３３の開口端縁に装着される止め輪３７と、受け部材３６およびピストン３５間に縮設されるダンパばね３８とでそれぞれ構成されるものであり、両ダンパ室１４₁，１４₂のダンパ室３４…が第１および第２ポンプ１１₁，１１₂に接続される。
【００２８】
第１および第２ポンプ１１₁，１１₂は、第１〜第４常閉型電磁弁６₁〜６₄と、第１および第２リザーバ８₁，８₂との間で、第１〜第４常閉型電磁弁６₁〜６₄の配列方向に沿う同軸の作動軸線を有してハウジング２０に配設されるものであり、両ポンプ１１₁，１１₂がそれぞれ備えるプランジャ４０…は、相互間に間隔をあけた位置に配置される。また両ポンプ１１₁，１１₂には、吸入弁１０₁，１０₂および吐出弁１３₁，１３₂がそれぞれ内蔵されている。
【００２９】
一方、電動モータ１２のモータケース２２は、有底円筒状のケース本体２２ａと、該ケース本体２２ａの開放端を閉じるように配置される蓋体２２ｂとから成るものであり、ケース本体２２ａおよび蓋体２２ｂがともに複数のねじ部材４１…によりハウジング２０の他面２０ｂに締結される。該電動モータ１２の出力軸４２は、蓋体２２ｂを回転自在に貫通し、ハウジング２０に設けられた凹部４３内まで延出されており、蓋体２２ｂに保持されたボールベアリング４４と、凹部４３の内端部に保持されたボールベアリング４５とによって支承される。しかも前記両ベアリング４４，４５間に位置する中間部で出力軸４２には偏心軸部４２ａが設けられており、該偏心軸部４２ａの外周に装着されるボールベアリング４６が、第１および第２ポンプ１１₁，１１₂における各プランジャ４０…の先端に当接される。したがって、電動モータ１２の作動によって出力軸４２が回転すれば、偏心軸部４２ａを介してボールベアリング４６に偏心運動が与えられ、これにより各プランジャ４０…にポンプ動作が与えられることになる。
【００３０】
カバー２１は、前記第１〜第４常開型電磁弁５₁〜５₄におけるソレノイド部５ａ…、前記第１〜第４常閉型電磁弁６₁〜６₄におけるソレノイド部６ｂ…を収納するとともに、第１および第２リザーバ８₁，８₂における受け部材２９…ならびに第１および第２ダンパ１４₁，１４₂における受け部材３６…を臨ませる収納室４８をハウジング２０との間に形成するようにして、複数のねじ部材４９…によりハウジング２０の一面２０ａに締結される。
【００３１】
カバー２１内の中間部には、第１〜第４常開型電磁弁５₁〜５₄の各ソレノイド部５ｂ…および第１〜第４常閉型電磁弁６₁〜６₄の各ソレノイド部６ｂ…を嵌合、支持する支持部５０が設けられ、該支持部５０には、該支持部５０で収納室４８を区画することがないように複数の開口部５２…が形成される。
【００３２】
電子制御ユニット１６は、電気回路がプリントされる基板５３に半導体チップ５４等が搭載されて成るものであり、カバー２１内のハウジング２０とは反対側で基板５３が前記支持部５０に締結される。しかも前記支持部５０には複数の導電性金属製のバスバー５１…が埋設されており、これらのバスバー５１…により、第１〜第４常開型電磁弁５₁〜５₄の各ソレノイド部５ｂ…および第１〜第４常閉型電磁弁６₁〜６₄の各ソレノイド部６ｂ…が、電子制御ユニット１６に接続される。
【００３３】
カバー２１には、ハウジング２０から側方にはみだす突出部２１ａが一体に形成されており、該突出部２１ａには、雄型であるカバー側コネクタ５５が設けられる。
【００３４】
このカバー側コネクタ５５は、カバー２１の前記突出部２１ａと一体にして箱形に形成される第１コネクタハウジング５６と、第１コネクタハウジング５６の内部に収容、支持される複数本の雄型である第１コネクタ端子５７…とで構成されるものであり、第１コネクタ端子５７…は電子制御ユニット１６およびバスバー５１…を介して各ソレノイド部５ｂ…，６ｂ…に接続され、また電子制御ユニット１６およびモータ用コネクタ５８を介して電動モータ１２に接続される。
【００３５】
図８において、ハウジング２０の下部には、該ハウジング２０の一面２０ａおよび他面２０ｂ間にわたる貫通孔５９が穿設されており、前記モータ用コネクタ５８が該貫通孔５９を抜き差し可能に貫通する。
【００３６】
図９および図１０を併せて参照して、カバー２１の前記貫通孔５９に対応する部分には、上記貫通孔５９と同軸で有底の第１位置決め孔６０を有するボス６１が一体に形成され、その第１位置決め孔６０内には、電子制御ユニット１６を介して前記第１コネクタ端子５７…のうちの２つにそれぞれ連なる正負一対の第２接続端子６２，６２が固定的に並設される。
【００３７】
さらに電動モータ１２におけるケース本体２２ａの内周には、ケース本体２２ａおよび蓋体２２ｂとの間をシールされる合成樹脂製のブラシホルダ６３が嵌着されており、上記貫通孔５９と同軸で有底の第２位置決め孔６４を有するボス６５がブラシホルダ６３に一体に形成され、その第２位置決め孔６４内に、電動モータ１２内の通電コイルに連なる正負一対の第２接続端子６６…が固定的に並設される。しかもボス６５は、蓋体２２ｂを貫通して前記貫通孔５９に突入するように配置される。
【００３８】
正負一対の第１接続端子６２，６２および正負一対の第２接続端子６６…は全て雄型に形成されており、正極である第１および第２接続端子６２，６６間、負極である第１および第２接続端子６２，６６間が一個のモータ用コネクタ５８を介して接続される。
【００３９】
モータ用コネクタ５８は、合成樹脂製のコネクタ本体６７と、該コネクタ本体６７の両側面に支持される耐熱合金製の一対の導電体６８，６８とで構成される。貫通孔５９を貫通するコネクタ本体６７の両端部は第１および第２位置決め孔６０，６４に相対回転不能に嵌合され、第１および第２位置決め孔６０，６４の閉塞端で軸方向移動が規制される。またコネクタ本体６７は、相対向する一対の支持壁６７ａ、６７ａと、両支持壁６７ａ、６７ａの各中間部間を一体に連結する絶縁隔壁６７ｂと、絶縁隔壁６７ｂの両面に突設されるリブ６７ｃ，６７ｃを一体に備えるものであり、一対の導電体６８，６８は、絶縁隔壁６７ｂの両側でコネクタ本体６７に装着される。
【００４０】
一方、各導電体６８，６８の両端には、雄型の前記第１および第２接続端子６２，６２；６６…に対応する雌型の接続部６９，６９；７０…がプレス加工により形成される。したがって電子制御ユニット１６および電動モータ１２間がモータ用コネクタ５８を介して電気的に接続されることになり、このモータ用コネクタ５８と、貫通孔５９の内面との間には、収納室４８の下部に通じる通気路７３が形成されることになる。
【００４１】
ところで、ハウジング２０およびカバー２１の接合面間には、モータ用コネクタ６８、常開型電磁弁５₁〜５₄、常閉型電磁弁６₁〜６₄、第１および第２リザーバ８₁，８₂、ならびに第１および第２ダンパ１４₁，１４₂を無端状に囲繞するシール部材７１が設けられており、ハウジング２０および電動モータ１２の接合面間には、モータ用コネクタ６８および出力軸４３を囲繞するシール部材７２が設けられる。したがって、雨水や洗浄水等がハウジング２０と、カバー２１および電動モータ１２との各接合面間に浸入することがあっても、少なくともモータ用コネクタ６８までの浸入は上記シール部材７１，７２により防止される。
【００４２】
図１１において、カバー２１に連設されたカバー側コネクタ５５には、複数の外部導線７５，７５…の端部に共通に設けられる外部導線側コネクタ７６が着脱可能に接続される。この外部導線側コネクタ７６の第２コネクタハウジング７７は、カバー側コネクタ５５の第１コネクタハウジング５６に嵌合される嵌合部７７ａと、該嵌合部７７ａとの間に前記第１コネクタハウジング５６を挿脱可能に挿入せしめる外筒部７７ｂとを一体に有して合成樹脂により形成されており、カバー側コネクタ５５の第１コネクタハウジング５６に着脱可能に係合し得るものである。
【００４３】
カバー側コネクタ５５への外部導線側コネクタ７６の接続時に、カバー側コネクタ５５の第１コネクタハウジング５６と、外部導線側コネクタ７６の第２コネクタハウジング７７における嵌合部７７ａとの間にはコネクタ室７８が形成され、このコネクタ室７８内に、第１および第２コネクタハウジング５６，７７の接触面間から水が浸入することを防止するために、嵌合部７７ａの外面には第１コネクタハウジング５６の内面に弾発的に接触する環状のシール部材７９が装着される。
【００４４】
外部導線側コネクタ７６の第２コネクタハウジング７７における嵌合部７７ａには、カバー側コネクタ５５が備える複数の第１コネクタ端子５７，５７…をそれぞれ内端側から個別に挿入せしめる接続孔８０，８０…が両端を開口せしめて設けられており、各第１コネクタ端子５７，５７…を挿脱可能に嵌合せしめるように雌型に形成される第２コネクタ端子８１，８１…が各接続孔８０，８０…内の一端側に配置される。
【００４５】
ところで、各外部導線７５，７５…は、導電性金属から成る導線８２，８２…が合成樹脂製の絶縁チューブ８３，８３…で被覆されて成るものであり、各接続孔８０，８０…内に外端側から挿入される外部導線７５，７５…の端部において絶縁チューブ８３，８３…から引出された導線８２，８２…に、各第２コネクタ端子８１，８１…が固着される。
【００４６】
しかも各外部導線７５，７５…の絶縁チューブ８３，８３…の外面と、各接続孔８０，８０…の外端側内面との間には環状のシール部材８４，８４…が介装されており、各外部導線７５，７５…は各シール部材８４，８４…を介して第２コネクタハウジング７７に支持されることになる。また各外部導線７５，７５…の第２コネクタハウジング７７への挿入部から各接続孔８０，８０…を経てコネクタ室７８に水が浸入することも前記シール部材８４，８４…で阻止される。
【００４７】
各外部導線７５，７５…の外部導線側コネクタ７６への連結部は、合成樹脂製のブーツ８５で覆われる。
【００４８】
カバー２１には、カバー側および外部導線側コネクタ５５，７６間に形成されるコネクタ室７８を、カバー２１およびハウジング２０間に形成される収納室４８に連通せしめる連通孔８６が設けられる。一方、ハウジング２０の下部には、モータ用コネクタ５８および貫通孔５９間に形成されている通気路７３が通じているので、前記コネクタ室７８も該通気路７３に通じることになる。
【００４９】
図２および図３に注目して、車体フレーム８８には、ハウジング２０の下面に対向する支持板部８９ａと、該支持板部８９ａの両端に直角に連設されてハウジング２０の両側面に対向する一対の支持板部８９ｂ，８９ｂとを備えるブラケット８９が固定されており、ハウジング２０は、マウント手段９０を介して支持板部８９ａに取付けられるとともに、マウント手段９１，９１を介して支持板部８９ｂ，８９ｂに取付けられる。
【００５０】
図１２を併せて参照して、ハウジング２０の下部と、ブラケット８９の支持板部８９ａとの間に設けられるマウント手段９０は、上下に延びる軸線を有して支持板部８９ａ上に固着されるマウント軸９２と、該マウント軸９２を嵌入せしめる円筒状のマウントラバー９３とから成るものである。一方、貫通孔５９の下方に位置する部分でハウジング２０の下部には、前記マウントラバー９３を嵌合せしめる取付け孔９４が設けられる。
【００５１】
またハウジング２０には通気孔９５が前記取付け孔９４と同軸に設けられており、この通気孔９５は、内端を貫通孔５９の中間部に開口せしめた小径孔部９５ａの外端に、該小径孔部９５ａよりも大径であるが前記取付け孔９４よりも小径である大径孔部９５ｂが、外方に臨む環状の段部９５ｃを両孔部９５ａ，９５ｂ間に形成するようにして同軸に連なって成るものである。
【００５２】
すなわち通気孔９５は、その内端を貫通孔５９の中間部に開口せしめるとともに外端を取付け孔９４に同軸に連ならせるようにしてハウジング２０の下部に設けられており、マウント手段９０のマウントラバー９３は、通気孔９５および取付け孔９４間に形成される環状の段部９６に当接するまで取付け孔９４に嵌合される。
【００５３】
通気孔９５における段部９５ｃには、たとえば商品名ゴアテックスで代表される通気防水素材により円形のシート状に形成される閉塞部材９７が当接される。一方、中央部に透孔９８を有して金属により円盤状に形成される押さえ部材９９が、通気孔９５の大径孔部９５ｂに圧入される。この押さえ部材９９には、閉塞部材９７側に突出した円形の突部９９ａが一体に設けられており、前記閉塞部材９７は、押さえ部材９９の突部９９ａと段部９５ｃとの間に挟持される。すなわち通気孔９５は閉塞部材９７で閉塞されることになる。
【００５４】
ハウジング２０内において、マウント手段９０および閉塞部材９７間には中間室１００が形成されており、この中間室１００を外部に通じさせる通気溝１０１が、マウント手段９０におけるマウントラバー９３の外面に設けられる。
【００５５】
ハウジング２０の上部両側には取付け突部１０２，１０２が一体に突設されており、それらの取付け突部１０２，１０２が、ブラケット９８の支持板部９８ｂ，９８ｂの上部にマウント手段９１，９１を介して取付けられる。
【００５６】
マウント手段９１は、ほぼ水平に延びる軸線を有して支持板部８９ｂ上に支持されるマウントボルト１０３と、該マウントボルト１０３の一部を嵌入せしめる円筒状のマウントラバー１０４とを備えるものであり、取付け突部１０２には、前記マウントラバー１０４を嵌合せしめる有底の取付け穴１０５が設けられる。
【００５７】
マウントボルト１０３は、ねじ軸部１０３ａと、該ねじ軸部１０３ａに同軸にかつ一体に連設される嵌入軸部１０３ｂと、ねじ軸部１０３ａおよび嵌入軸部１０３ｂの連設部から半径方向外方に張出す鍔部１０３ｃとを一体に備えるものである。一方、支持板部８９ｂの上部には、上方に開口したスリット１０６が設けられており、ねじ軸部１０３ａの鍔部１０３ｃ寄りの部分が該スリット１０６に上方から差し込まれる。而してねじ軸部１０３ａにはナット１０７が螺合され、このナット１０７と前記鍔部１０３ｃとの間に支持板部８９ｂが挟まれることにより、マウントボルト１０３が支持板部８９ｂに固定的に支持されることになる。
【００５８】
次にこの実施例の作用について説明すると、第１〜第４常開型電磁弁５₁〜５₄のソレノイド部５ａ…、第１〜第４常閉型電磁弁６₁〜６₄のソレノイド部６ｂ…を収容するとともに、電子制御ユニット１６を収納せしめる収納室４８が、ハウジング２０と、シール部材７１を介して該ハウジング２０に締結されるカバー２１との間に形成されるが、該収納室４８の下部に通気路７３を介して内端を通じさせる通気孔９５が外端を下方に向けて開口してハウジング２０に設けられており、該通気孔９５が通気防水素材から成る閉塞部材９７で塞がれている。したがって通気孔９５の内端および収納室４８間の連通構造にかかわらず、閉塞部際９７の働きにより収納室４８の呼吸を可能としつつ収納室への水の浸入を確実に防止することができ、通気孔９５および収納室４８間の連通構造を単純化してハウジング２０に施す加工を単純化することができる。
【００５９】
しかも電子制御ユニット１６および電動モータ１２間の電気的接続を果すためのモータ用コネクタ５８を挿通せしめるべくハウジング２０の両面２０ａ，２０ｂ間にわたって設けられる貫通孔５９の中間部に、通気孔９５の内端が開口されている。したがって電子制御ユニット１６および電動モータ１２間の電気的接続のための貫通孔５９を利用して通気孔９５の内端を収納室４８に通じさせるので、通気孔９５を収納室４８に通じさせるためだけの加工をハウジング２０に施す必要がなく、ハウジング２０に施す加工能率をより一層向上することができるとともに、ハウジング２０の小型化すなわちブレーキ液圧制御装置３の小型化を図ることができる。
【００６０】
またハウジング２０を車体フレーム８８に取付けるためのマウント手段９０，９１，９１のうちの１つ９０が備える円筒状のマウントラバー９３を嵌合せしめる取付け孔９３が、一直線状の通気孔９５の外端に同軸に連なってハウジング２０に設けられ、閉塞部材９７およびマウント手段９０間に形成される中間室１００を外部に連通させる通気溝１０１が、マウントラバー９３の外面に設けられている。したがって、閉塞部材９７を介しての収納室４８の呼吸を可能としつつ閉塞部材４８への異物の接触をマウントラバー９３で阻止して閉塞部材９７の耐久性を向上することができ、取付け孔９４と、通気孔９５とを同軸に穿孔加工するようにしてハウジング２０に施す加工能率をより一層向上することができる。
【００６１】
さらにカバー側コネクタ５５および外部導線側コネクタ７６の接続状態で第１および第２コネクタハウジング５６，７７間に形成されるコネクタ室７８は、カバー２１に設けられる連通孔８６を介して収納室４８に連通している。したがって、コネクタ室７８の内圧が変化することが極力抑制されることになり、内圧変化に伴なうコネクタハウジング５６，７７の変形に伴なうシール不良が生じたり、外部導線７５，７５…の絶縁チューブ８３…および導線８２…間の間隙からの毛細管現象によるコネクタ室７８への水の吸込みが生じたりするのを確実に防止することができる。
【００６２】
しかも収納室４８は、閉塞部材９７の働きにより、水の浸入を防止しつつ外部に連通しているので、コネクタ室７８および収納室４８の内圧を外部の圧力に等しくして内圧の変化をより一層効果的に抑えることができ、収納室４８からコネクタ室７８への水の浸入も確実に防止することができる。
【００６３】
以上、本発明の実施例を詳述したが、本発明は上記実施例に限定されるものではなく、特許請求の範囲に記載された本発明を逸脱することなく種々の設計変更を行なうことが可能である。
【００６４】
たとえば上記実施例では、通気孔９５を通気防水素材から成る閉塞部材９７で塞ぐことにより、収納室４８への水の浸入を防止しつつ収納室４８を外部に連通するようにしたが、収納室４８を外部に連通させる通路を迷路として形成して水の浸入を防止するようにしてもよい。
【００６５】
また本発明は、乗用車両だけでなく、自動二輪車用のブレーキ液圧制御装置にも適用可能である。
【００６６】
【発明の効果】
以上のように請求項１の発明によれば、収納室がコネクタ室と電動モータ内とに連通しており、しかもそれら収納室とコネクタ室と電動モータ内とが、ハウジングに設けた共通の通気孔により外部に連通している。このようにコネクタ室が収納室に連通し、更に外部にも連通しているので、コネクタ室および収納室の内圧を外部の圧力に等しくして内圧の変化をより効果的に抑えることができ、従って、コネクタハウジングの変形に伴なうシール不良が生じたり、外部導線の絶縁チューブおよび導線間の間隙からの毛細管現象による水の吸込みが生じたりするのを防止できる。
【００６７】
また請求項２の発明によれば、電動モータと収納室内の電子制御ユニット間を接続するモータ用コネクタが、ハウジングにその一面と他面とに亘って設けた貫通孔を貫通していて、その貫通孔の内面と該モータ用コネクタとの間に、該収納室に連通する通気路が設けられ、この通気路を外部に連通させる通気孔が、該通気孔の通気路側への開口端をモータ用コネクタの側面に対向させてハウジングに設けられる。このようにコネクタ室が収納室に連通し、更に外部にも連通しているので、コネクタ室および収納室の内圧を外部の圧力に等しくして内圧の変化をより効果的に抑えることができ、従って、コネクタハウジングの変形に伴なうシール不良が生じたり、外部導線の絶縁チューブおよび導線間の間隙からの毛細管現象による水の吸込みが生じたりするのを防止できる。
【図面の簡単な説明】
【図１】乗用車両のブレーキ装置のブレーキ液圧回路図である。
【図２】ブレーキ液圧制御装置の側面図である。
【図３】図２の３矢視図である。
【図４】図２の４矢視図である。
【図５】図４の５−５線断面図である。
【図６】図４の６−６線断面図である。
【図７】図６の７−７線断面図である。
【図８】図４の８−８線断面図である。
【図９】図８の９矢視部拡大図である。
【図１０】図９の１０−１０線拡大断面図である。
【図１１】図２の１１−１１線拡大断面図である。
【図１２】図９の要部拡大図である。
【符号の説明】
８₁，８₂・・・リザーバ
２０・・・ハウジング
２０ａ・・・カバーの一面
２１・・・カバー
４８・・・収納室
５５・・・カバー側コネクタ
５６・・・第１コネクタハウジング
５７・・・第１端子
７５・・・外部導線
７６・・・外部導線側コネクタ
７７・・・第２コネクタハウジング
７８・・・コネクタ室
８１・・・第２端子
８６・・・連通孔
Ｂ₁，Ｂ₂，Ｂ₃，Ｂ₄・・・車輪ブレーキ
Ｍ・・・マスタシリンダ
Ｖ₁，Ｖ₂，Ｖ₃，Ｖ₄・・・制御弁手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a brake fluid pressure control device for a vehicle such as a passenger vehicle or a motorcycle, and in particular, controls the control valve means on one surface of a housing provided with a control valve means for controlling the brake fluid pressure of a wheel brake. A cover made of a synthetic resin that forms a storage chamber for housing at least an electronic control unit is attached to the housing, and a plurality of external connectors are attached to the cover-side connector having a plurality of first terminals connected to the solenoid unit. The present invention relates to an improvement in which an external conductor side connector having a plurality of second terminals respectively connected to a conductor is detachably mounted to electrically connect the first and second terminals to each other.
[0002]
[Prior art]
Conventionally, such a brake fluid pressure control device is already known, for example, from Patent Document 1 and the like.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2-216354
[Problems to be solved by the invention]
By the way, in such a brake fluid pressure control device, the first terminal of the cover side connector and the second terminal of the external conductor side connector are electrically connected to each other in the connector chamber formed between the connector housings of both connectors. However, if water from the outside enters the connector chamber and adheres to the connection portions of the first and second terminals, there is a possibility that energization failure may occur. Therefore, it is common to keep the connector chamber sealed when both connectors are connected.
[0005]
However, when the connector chamber is held in a sealed state as described above, the internal pressure of the connector chamber changes due to a temperature change caused by energization between the first and second terminals, and the connector housings of both connectors are respectively deformed. The seal may be insufficient.
[0006]
The external conductor is formed by covering the conductor with an insulating tube. If the end of the external conductor opposite to the external conductor side connector is submerged or water adheres to the end, the connector As the internal pressure of the chamber changes, external water may be sucked into the connector chamber due to capillary action in the gap between the insulating tube and the conductor.
[0007]
The present invention has been made in view of such circumstances, and suppresses a change in the internal pressure of the connector chamber between the cover-side connector and the external conductor-side connector and prevents the vehicle from sucking water into the connector chamber. The purpose is to provide.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a state in which the master cylinder and the wheel brake communicate with each other and the wheel brake and the reservoir are disconnected, and the master cylinder and the wheel brake are disconnected and the wheel brake. Control valve means capable of switching between a state of communicating between the reservoir and the reservoir and a state of shutting off the wheel brake from the master cylinder and the wheel brake are provided in the housing, and at least an electronic control unit for controlling the control valve means is accommodated A synthetic resin cover that forms a storage chamber between the housing and the housing is attached to one surface of the housing, and is connected to at least the first connector housing integrally connected to the cover and the electronic control unit. A composite that is received and supported in the first connector housing. The first terminal includes a cover-side connector, a second connector housing that is detachably engaged with the first connector housing, and a plurality of external conductors individually connected to and accommodated in the second connector housing. The plurality of second terminals constitute an external conductor side connector, and the first and second terminals are electrically connected to each other in the connector chamber formed between the connector housings in a connected state of the cover side and the external conductor side connector. Are connected to each other, the insertion portions of the external conductors into the second connector housing are sealed , and the brake fluid absorbed in the reservoir is supplied to the master cylinder and the control. electric motor vehicle brake hydraulic pressure control apparatus odor mounted for driving a pump for circulating between the valve means , The storage chamber communicates with the said electric motor and said connector chamber, and wherein the common vent hole for communicating with their storage chamber and a connector chamber and the electric motor to the outside is provided in the housing To do.
[0009]
According to the configuration of the first aspect of the present invention, the storage chamber communicates with the connector chamber and the electric motor, and the storage chamber, the connector chamber, and the electric motor are provided in the housing. The vents communicate with the outside. In this way, the connector chamber communicates with the storage chamber, and further communicates with the outside, so that the internal pressure of the connector chamber and the storage chamber can be made equal to the external pressure, and the change in the internal pressure can be more effectively suppressed. or resulting accompanying poor sealing to the deformation of the connector housing Accordingly, cut with prevent or cause the suction of water by capillary action from the gap between the insulation tube and conductors of the external conductors.
[0010]
The invention according to claim 2 is a state in which the master cylinder and the wheel brake communicate with each other and the wheel brake and the reservoir are disconnected, and a state in which the master cylinder and the wheel brake are disconnected and the wheel brake and the reservoir communicate with each other. And a control valve means capable of switching a state in which the wheel brake is disconnected from the master cylinder and the wheel brake is provided in the housing, and a housing chamber for housing at least an electronic control unit for controlling the control valve means is defined as the housing. A cover made of synthetic resin formed between the first connector housing and the first connector housing integrally connected to the cover; and at least connected to the electronic control unit and accommodated in the first connector housing Cover with multiple first terminals supported A second connector housing configured to be detachably engaged with the first connector housing, and a plurality of second terminals housed and supported in the second connector housing individually connected to the plurality of external conductors. An external conductor side connector is configured, and the first and second terminals are electrically connected to each other in a connector chamber formed between the two connector housings in a connected state of the cover side and the external conductor side connector. The insertion portions of the external conductors into the second connector housing are sealed between the housings, and the brake fluid absorbed in the reservoir is recirculated between the master cylinder and the control valve means on the other surface of the housing. Vehicle equipped with an electric motor that is controlled by the electronic control unit to drive the pump In the brake fluid pressure control device, the cover is provided with a communication hole that allows the connector chamber to communicate with the storage chamber, and a motor connector that connects between the electric motor and the electronic control unit is provided in the housing. An air passage that passes through the through hole provided on the one surface and the other surface and communicates with the storage chamber is provided between the inner surface of the through hole and the motor connector. A vent hole communicating with the outside is provided in the housing with an open end of the vent hole toward the vent path facing a side surface of the motor connector.
According to whether this configuration, the motor connector for connecting the electric motor and the housing chamber of the electronic control unit, extend through the through-hole formed over its one surface and the other surface on the housing, of the through hole A vent path communicating with the storage chamber is provided between the inner surface and the motor connector, and a vent hole communicating the vent path with the outside has an opening end of the vent hole toward the vent path side of the motor connector. The housing is provided so as to face the side surface. Thus connector chamber communicates with the storage chamber, also because in communication, at equal pressure connector chamber and storage chamber to the outside of the pressure can reduce the change in the internal pressure more effectively to further external Therefore, it is possible to prevent the occurrence of poor sealing due to the deformation of the connector housing, or the suction of water due to capillary action from the gap between the insulating tube of the external conductor and the conductor .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.
[0012]
1 to 12 show one embodiment of the present invention. FIG. 1 is a brake hydraulic circuit diagram of a brake device for a passenger vehicle, FIG. 2 is a side view of the brake hydraulic pressure control device, and FIG. 4 is a sectional view taken along the line 5-5 in FIG. 4, FIG. 6 is a sectional view taken along the line 6-6 in FIG. 4, and FIG. 7 is a sectional view taken along the line 7 in FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 4, FIG. 9 is an enlarged view taken along the arrow 9 in FIG. 8, FIG. 10 is an enlarged cross-sectional view taken along line 10-10 in FIG. 2 is an enlarged cross-sectional view taken along line 11-11, and FIG. 12 is an enlarged view of a main part of FIG.
[0013]
First, in FIG. 1, a tandem master cylinder M includes first and second output ports 1 ₁ and 1 ₂ that generate brake fluid pressure in accordance with a pedaling force applied to a brake pedal P by a vehicle driver. The front wheel brake B ₁ , the right rear wheel brake B ₂ , the right front wheel brake B ₃ and the left rear wheel brake B _4, and the first and second output ports 1 ₁ and 1 ₂ individually. A brake hydraulic pressure control device 3 is provided between the connected first and second output hydraulic pressure paths 2 ₁ and 2 ₂ , and the brake hydraulic pressure control device 3 and the right and left rear wheel brakes B ₂ , Between B ₄ , first and second proportional pressure reducing valves 4 ₁ and 4 ₂ are interposed, respectively.
[0014]
The brake fluid pressure control device 3 includes _first and _first wheel brakes B ₁ for the left front wheel, a wheel brake B _{2 for} the right rear wheel, a wheel brake B ₃ for the right front wheel, and a wheel brake B ₄ for the left rear wheel. 2, first, second, third and fourth check valves connected to the third and fourth normally open electromagnetic valve 5 ₁ to 5 _4, in parallel to the normally open electromagnetic valves 5 ₁ to 5 ₄ 7 _{1 to} 7 ₄ , first, second, third and fourth normally closed solenoid valves 6 _{1 to} 6 ₄ individually corresponding to the wheel brakes B _{1 to} B ₄ , and first and second outputs. The first and second reservoirs 8 ₁ and 8 ₂ individually corresponding to the hydraulic pressure paths 2 ₁ and 2 ₂ , respectively, and the first and second reservoirs 8 ₁ and 8 ₂ via the suction valves 10 ₁ and 10 ₂ , respectively. common single electric motor for driving the first and second pump 11 of the plunger-type connected _1, and 11 _2, the both pumps 11 _1, 11 ₂ 2, the discharge valve 13 _1, 13 ₂ of the first and second dampers 14 are connected through respective _1, 14 ₂ to the first and second pumps 11 _1, 11 _2, the first and second output fluid First and second orifices 15 ₁ and 15 ₂ interposed between the pressure paths 2 ₁ and 2 ₂ and the first and second dampers 14 ₁ and 14 ₂ , respectively, and the normally open solenoid valves 5 ₁ to 5. 5 _4, and an electronic control unit 16 for controlling the operation of the normally closed solenoid valve ₆₁ through ₄ and the electric motor 12.
[0015]
The first normally open electromagnetic valve 5 ₁ is provided in the first hydraulic pressure output channel 2 ₁ and between the left front wheel brake B _1, a second normally open electromagnetic valve 5 _2, the first hydraulic pressure output channel 2 provided between ₁ and the first proportional pressure reducing valve 4 _1, third normally open electromagnetic valve 5 ₃ is provided between the second output fluid pressure passage 2 ₂ and the right front wheel brake B _3, fourth normally open type electromagnetic valve 5 ₄ is provided on the second output fluid pressure passage 2 ₂ and the second between the proportional pressure reducing valve 4 _2.
[0016]
The first to fourth check valves 7 _{1 to} 7 ₄ allow the brake fluid to flow from the corresponding wheel brakes B _{1 to} B ₄ to the master cylinder M, so that the normally open solenoid valves 5 ₁ to 5. 5 is connected to ₄ in parallel.
[0017]
The first normally closed solenoid valve ₆₁ is provided between the left front wheel brake B ₁ and the first reservoir 8 _1, second normally closed solenoid valve 6 _2, the first proportional pressure reducing valve 4 ₁ and the first provided between reservoir _81, third normally closed electromagnetic valve 6 ₃ is provided between the right front wheel brake B ₃ and the second reservoir 8 _2, fourth normally closed electromagnetic valve 6 ₄ second Provided between the proportional pressure reducing valve 4 ₂ and the second reservoir 8 ₂ .
[0018]
Incidentally, the first normally open electromagnetic valve 5 ₁ and the first normally closed solenoid valve ₆₁ constitute a first control valve means V ₁ in cooperation, the second normally open electromagnetic valve 5 ₂ and second normally The closed solenoid valve 6 ₂ cooperates to constitute the second control valve means V ₂ , and the third normally open solenoid valve 5 ₃ and the third normally closed solenoid valve 6 _{3 work} together to form the third control valve. constitute a means V _3, a fourth normally open electromagnetic valve 5 ₄ and the fourth normally closed electromagnetic valve 6 ₄ constitutes the fourth control valve unit V ₄ in cooperation.
[0019]
Such control valve means V _{1 to} V ₄ communicate with each other between the master cylinder M and the wheel brakes B _{1 to} B ₄ by the electronic control unit 16 during normal braking in which each wheel is not likely to be locked. The brakes B _{1 to} B ₄ and the reservoirs 8 ₁ and 8 ₂ are controlled to be disconnected. That is, the normally open solenoid valves 5 _{1 to} 5 ₄ are demagnetized and opened, and the normally closed solenoid valves 6 _{1 to} 6 ₄ are demagnetized and closed, so that the first output port of the master cylinder M brake fluid pressure outputted from the 1 ₁ is configured to act on the left front wheel brake B ₁ via the first normally open electromagnetic valve 5 _1, second normally open electromagnetic valve 5 ₂ and the first proportional pressure reducing valve Acts on the right rear wheel brake B ₂ via 4 ₁ . The brake fluid pressure outputted from the second output port 1 ₂ of the master cylinder M is configured to act on the right front wheel brake B ₃ through the third normally open electromagnetic valve 5 _3, fourth normally open electromagnetic acting on the left rear wheel brake B ₄ via the valve 5 ₄ and the second proportional pressure reducing valve 4 _2.
[0020]
When the wheel is about to enter the locked state during the brake, the control valve means corresponding to the wheel that is about to enter the locked state among the control valve means V _{1 to} V ₄ is controlled by the electronic control unit 16. The master cylinder M and the wheel brakes B _{1 to} B ₄ are disconnected, and the wheel brakes B _{1 to} B ₄ and the reservoirs 8 ₁ and 8 ₂ are controlled to communicate with each other. That normally open electromagnetic valve corresponding to the first to fourth wheel is likely to become locked out of the normally open electromagnetic valve 5 ₁ to 5 ₄ are energized, while being closed, the first to fourth normally Of the closed solenoid valves 6 _{1 to} 6 _4, the normally closed solenoid valve corresponding to the wheel is excited and opened. Thus, part of the brake fluid pressure of the wheel which is likely to become locked is absorbed in the ₂ first reservoir 8 ₁ or the second reservoir 8, the brake fluid pressure of the wheel which is likely to become locked is vacuum Will be.
[0021]
Further, when the brake fluid pressure is kept constant, each control valve means V _{1 to} V ₄ shuts off the wheel brakes B _{1 to} B ₄ from the master cylinder M and the reservoirs 8 ₁ and 8 ₂ by the electronic control unit 16. The state is controlled. That is, the normally open solenoid valves 5 _{1 to} 5 ₄ are excited and closed, and the normally closed solenoid valves 6 _{1 to} 6 ₄ are demagnetized and closed. When further pressure increase the brake fluid pressure, the normally open electromagnetic valve 5 ₁ to 5 ₄ are deenergized, both are opened, the normally closed solenoid valve ₆₁ through ₄ are demagnetized, the closed state Just do it.
[0022]
By controlling in this way the respective control valve means V ₁ ~V ₄ in the electronic control unit 16 without locking the wheels, it can be efficiently braked.
[0023]
Incidentally, the electric motor 12 is operated by the electronic control unit 16 during the antilock brake control as described above. Since the first and second pumps 11 ₁ and 11 ₂ are driven in accordance with the operation of the electric motor 12, the brake fluid absorbed in the first and second reservoirs 8 ₁ and 8 ₂ is the first and second pump fluids. pump 11 _1, 11 ₂ is sucked into and then the first and second dampers 14 _1, 14 is discharged to the ₂ side, first and second orifices 15 _1, the first and second output fluid through the 15 ₂ passage 2 Refluxed to ₁ and 2 ₂ . Such recirculation of the brake fluid can prevent an increase in the depression amount of the brake pedal P due to the absorption of the brake fluid in the first and second reservoirs 8 ₁ and 8 ₂ . Moreover, the pulsation of the discharge pressure of the first and second pumps 11 ₁ and 11 ₂ is attenuated by the cooperative action of the first and second dampers 14 ₁ and 14 ₂ and the first and second orifices 15 ₁ and 15 _2. Therefore, the operation feeling of the brake pedal P is not hindered by the reflux.
[0024]
2 to 4, the brake hydraulic pressure control device 3 includes a housing 20 formed in a block shape by, for example, an aluminum alloy, and the first to fourth normally open electromagnetic valves 5 are provided in the housing 20. _{1 to} 5 ₄ , their normally open solenoid valves 5 _{1 to} 5 ₄ and control valve means V _{1 to} V ₄ , the first to fourth normally closed solenoid valves 6 _{1 to} 6 ₄ , first to first 4 check valves 7 _{1 to} 7 ₄ , first and second reservoirs 8 ₁ and 8 ₂ , first and second dampers 14 ₁ and 14 ₂ , first and second orifices 15 ₁ and 15 ₂ , and first and second Two pumps 11 ₁ and 11 ₂ are provided. A synthetic resin cover 21 is attached to one surface 20 a of the housing 20, and a motor case 22 of the electric motor 12 is attached to the other surface 20 b of the housing 20 on the side opposite to the cover 21.
[0025]
Referring also to FIGS. 5 to 7, the first to fourth normally open solenoid valves 5 _{1 to} 5 ₄ are configured by connecting the solenoid portion 5 b to the valve portion 5 a, respectively. The valve portions 5a are accommodated in four mounting holes 23 provided in the upper portion of the housing 20 so as to open to the one surface 20a, and the solenoid portions 5b project from the one surface 20a of the housing 20. The first to fourth normally closed solenoid valves 6 _{1 to} 6 ₄ are configured such that the solenoid portion 6b is connected to the valve portion 6a, and the housing 20 is opened to the one surface 20a of the housing 20. Each of the valve portions 6a is accommodated in four mounting holes 24 provided in the upper portion of the housing, and each solenoid portion 6b projects from the one surface 20a of the housing 20. Moreover, the mounting holes 23 are provided in the housing 20 side by side in the horizontal direction, whereas the mounting holes 24 are provided in the housing 20 side by side in the horizontal direction below the mounting holes 23. through fourth normally open electromagnetic valve 5 ₁ to 5 ₄ and the first through fourth normally closed electromagnetic valve ₆₁ through ₄ will be mounted on the housing 20 in parallel vertically.
[0026]
The first reservoir 8 ₁ is disposed below the housing 20 at a position corresponding to the control valve means V ₁ and V ₂ , and the second reservoir 8 ₂ is a housing at a position corresponding to the control valve means V ₃ and V _4. 20 is disposed at the bottom. Thus, as shown in FIG. 5, the two reservoirs 8 ₁ and 8 ₂ are provided with a bottomed reservoir hole 26 provided in the housing 20 so as to open on one surface 20a of the housing 20, and a blockage of the reservoir hole 26. A bottomed cylindrical piston 28 that is slidably fitted into the reservoir hole 26 by forming a reservoir chamber 27 between the end and a receiving member 29 that is fitted to the open end of the reservoir hole 26; A retaining ring 30 attached to the opening edge of the reservoir hole 26 so as to prevent the receiving member 29 from coming out of the reservoir hole 26, and a reservoir spring 31 contracted between the receiving member 29 and the piston 28. and those composed respectively, both reservoirs _{_81,} 82 of the reservoir chamber 27 ... are connected to _two first and second pumps 11 _1, 11.
[0027]
The first damper 14 ₁ is disposed in the housing 20 at a position corresponding to between the control valve means V ₁ , V ₂ and the first reservoir 8 ₁ , and the second damper 14 ₂ is controlled by the control valve means V ₃ , V ₄ and It is arranged in the housing 20 at a position corresponding to between ₂ second reservoir 8. Thus, as shown in FIGS. 6 and 7, both dampers 14 ₁ and 14 ₂ are provided with a bottomed damper hole 33 provided in the housing 20 so as to open to one surface 20 a of the housing 20, and the damper hole. A damper chamber 34 formed between the closed end of the piston 33 and a piston 35 slidably fitted in the damper hole 33; a receiving member 36 fitted in the open end of the damper hole 33; A retaining ring 37 attached to the opening edge of the damper hole 33 so as to prevent the member 36 from coming out of the damper hole 33, and a damper spring 38 contracted between the receiving member 36 and the piston 35, respectively. It is intended to be, both the damper chambers 14 _1, 14 ₂ of the damper chamber 34 ... are connected to _two first and second pumps 11 _1, 11.
[0028]
The first and second pumps 11 ₁ and 11 ₂ are connected between the first to fourth normally closed solenoid valves 6 _{1 to} 6 ₄ and the first and second reservoirs 8 ₁ and 8 ₂ . 4 is intended to be disposed in the housing 20 has a coaxial actuating axes along the direction of arrangement of the normally closed solenoid valve ₆₁ through _4, the plunger 40 ... is provided with two pumps 11 _1, 11 _2, respectively, They are arranged at positions spaced from each other. Both pumps 11 ₁ and 11 ₂ have built-in suction valves 10 ₁ and 10 ₂ and discharge valves 13 ₁ and 13 ₂ , respectively.
[0029]
On the other hand, the motor case 22 of the electric motor 12 includes a bottomed cylindrical case body 22a and a lid body 22b disposed so as to close the open end of the case body 22a. The body 22b is fastened to the other surface 20b of the housing 20 by a plurality of screw members 41. The output shaft 42 of the electric motor 12 rotatably passes through the lid 22b and extends into a recess 43 provided in the housing 20, and includes a ball bearing 44 held by the lid 22b and a recess 43. It is supported by a ball bearing 45 held at the inner end of the bearing. In addition, the output shaft 42 is provided with an eccentric shaft portion 42a at an intermediate portion located between both the bearings 44 and 45, and a ball bearing 46 mounted on the outer periphery of the eccentric shaft portion 42a includes first and second bearings. The pumps 11 ₁ and 11 ₂ are brought into contact with the tips of the plungers 40. Therefore, if the output shaft 42 is rotated by the operation of the electric motor 12, an eccentric motion is given to the ball bearing 46 through the eccentric shaft portion 42a, and thereby a pump operation is given to each plunger 40.
[0030]
Cover 21 houses the first to fourth solenoid portion 5a of the normally open solenoid valves 5 ₁ to 5 ₄ ..., the first to fourth solenoid portion 6b in the normally closed solenoid valve ₆₁ through ₄ ... In addition, a storage chamber 48 is formed between the housing 20 and the receiving members 29... In the first and second reservoirs 8 ₁ and 8 ₂ and the receiving members 36 in the first and second dampers 14 ₁ and 14 ₂ . In this way, the plurality of screw members 49 are fastened to the one surface 20a of the housing 20.
[0031]
The intermediate portion of the cover 21, first to fourth normally open electromagnetic valve 5 ₁ to 5 each solenoid portion 5b of ₄ ... and the first through the solenoid of the fourth normally closed electromagnetic valve ₆₁ through ₄ 6b is provided, and a plurality of openings 52 are formed in the support portion 50 so that the storage chamber 48 is not partitioned by the support portion 50.
[0032]
The electronic control unit 16 is configured by mounting a semiconductor chip 54 or the like on a substrate 53 on which an electric circuit is printed, and the substrate 53 is fastened to the support portion 50 on the side opposite to the housing 20 in the cover 21. . Moreover said support portion 50 is embedded a plurality of conductive metal bus bar 51 ..., These bus bars 51 ..., the first to fourth respective solenoid portions 5b of the normally open electromagnetic valve 5 ₁ to 5 ₄ .. And the first to fourth normally closed solenoid valves 6 _{1 to} 64 ₄ are connected to the electronic control unit 16.
[0033]
The cover 21 is integrally formed with a protruding portion 21a that protrudes laterally from the housing 20, and the protruding portion 21a is provided with a cover connector 55 that is a male type.
[0034]
The cover-side connector 55 includes a first connector housing 56 formed in a box shape integrally with the protruding portion 21 a of the cover 21, and a plurality of male molds housed and supported in the first connector housing 56. The first connector terminals 57 are connected to the solenoid parts 5b, 6b through the electronic control unit 16 and the bus bar 51, and the electronic control unit. 16 and the motor connector 58 are connected to the electric motor 12.
[0035]
In FIG. 8, a through hole 59 extending between one surface 20 a and the other surface 20 b of the housing 20 is formed in the lower portion of the housing 20, and the motor connector 58 penetrates the through hole 59 so that it can be inserted and removed.
[0036]
9 and 10 together, a boss 61 having a bottomed first positioning hole 60 that is coaxial with the through hole 59 is integrally formed in a portion corresponding to the through hole 59 of the cover 21. In the first positioning hole 60, a pair of positive and negative second connection terminals 62, 62 respectively connected to two of the first connector terminals 57... Via the electronic control unit 16 are fixedly arranged in parallel. The
[0037]
Further, a brush holder 63 made of synthetic resin that seals between the case main body 22a and the lid body 22b is fitted on the inner periphery of the case main body 22a of the electric motor 12, and is coaxial with the through hole 59. A boss 65 having a second positioning hole 64 at the bottom is formed integrally with the brush holder 63, and a pair of positive and negative second connection terminals 66 connected to the energizing coil in the electric motor 12 is fixed in the second positioning hole 64. Side by side. Moreover, the boss 65 is disposed so as to penetrate the cover body 22 b and enter the through hole 59.
[0038]
The pair of positive and negative first connection terminals 62 and 62 and the pair of positive and negative second connection terminals 66 are all formed in a male shape, and the first and second connection terminals 62 and 66 that are positive electrodes, and the first that is a negative electrode. The second connection terminals 62 and 66 are connected through a single motor connector 58.
[0039]
The motor connector 58 includes a connector body 67 made of a synthetic resin and a pair of conductors 68 and 68 made of a heat resistant alloy supported on both side surfaces of the connector body 67. Both end portions of the connector main body 67 passing through the through hole 59 are fitted into the first and second positioning holes 60 and 64 so as not to rotate relative to each other. Be regulated. The connector body 67 includes a pair of opposing support walls 67a and 67a, an insulating partition wall 67b that integrally connects the intermediate portions of the support walls 67a and 67a, and ribs that protrude from both surfaces of the insulating partition wall 67b. 67c and 67c are integrally provided, and the pair of conductors 68 and 68 are attached to the connector main body 67 on both sides of the insulating partition wall 67b.
[0040]
On the other hand, female connection portions 69, 69; 70,... Corresponding to the male first and second connection terminals 62, 62; 66,. The Therefore, the electronic control unit 16 and the electric motor 12 are electrically connected via the motor connector 58. Between the motor connector 58 and the inner surface of the through hole 59, the storage chamber 48 is provided. A ventilation path 73 leading to the lower part is formed.
[0041]
By the way, between the joint surfaces of the housing 20 and the cover 21, a motor connector 68, normally open solenoid valves 5 _{1 to} 5 ₄ , normally closed solenoid valves 6 _{1 to} 6 ₄ , first and second reservoirs 8 ₁ , 8 ₂ , and a seal member 71 that endlessly surrounds the first and second dampers 14 ₁ , 14 ₂ are provided, and a motor connector 68 and an output shaft are provided between the joint surfaces of the housing 20 and the electric motor 12. A seal member 72 surrounding 43 is provided. Therefore, even if rain water, washing water, or the like enters between the joint surfaces of the housing 20, the cover 21 and the electric motor 12, at least the penetration to the motor connector 68 is prevented by the seal members 71 and 72. Is done.
[0042]
In FIG. 11, an external conductor side connector 76 that is provided in common at the ends of the plurality of external conductors 75, 75... The second connector housing 77 of the external conductor side connector 76 has a fitting portion 77a fitted to the first connector housing 56 of the cover side connector 55, and the first connector housing 56 between the fitting portion 77a. Is integrally formed with a synthetic resin and can be removably engaged with the first connector housing 56 of the cover-side connector 55.
[0043]
When the external conductor side connector 76 is connected to the cover side connector 55, a connector chamber is provided between the first connector housing 56 of the cover side connector 55 and the fitting portion 77a of the second connector housing 77 of the external conductor side connector 76. 78 is formed, and in order to prevent water from entering between the contact surfaces of the first and second connector housings 56 and 77 in the connector chamber 78, the first connector housing is formed on the outer surface of the fitting portion 77a. An annular seal member 79 that elastically contacts the inner surface of 56 is mounted.
[0044]
In the fitting part 77a of the second connector housing 77 of the external conductor side connector 76, a plurality of first connector terminals 57, 57... Provided in the cover side connector 55 are individually inserted from the inner end side, respectively. Are provided with openings at both ends, and second connector terminals 81, 81, which are formed in a female shape so that the first connector terminals 57, 57,. , 80...
[0045]
The external conductors 75, 75... Are formed by covering the conductors 82, 82... Made of conductive metal with insulating tubes 83, 83. The second connector terminals 81, 81... Are fixed to the conductors 82, 82... Drawn from the insulating tubes 83, 83... At the ends of the external conductors 75, 75.
[0046]
In addition, annular seal members 84, 84... Are interposed between the outer surfaces of the insulating tubes 83, 83... Of the external conductors 75, 75. The external conductors 75, 75... Are supported by the second connector housing 77 via the seal members 84, 84. Further, the sealing members 84, 84... Prevent water from entering the connector chamber 78 through the connection holes 80, 80... From the insertion portions of the external conductors 75, 75.
[0047]
The connecting portion of each of the external conductors 75, 75... To the external conductor side connector 76 is covered with a boot 85 made of synthetic resin.
[0048]
The cover 21 is provided with a communication hole 86 that allows the connector chamber 78 formed between the cover side and the external conductor side connectors 55 and 76 to communicate with the storage chamber 48 formed between the cover 21 and the housing 20. On the other hand, an air passage 73 formed between the motor connector 58 and the through-hole 59 communicates with the lower portion of the housing 20, so that the connector chamber 78 also communicates with the air passage 73.
[0049]
2 and 3, the body frame 88 has a support plate portion 89 a that faces the lower surface of the housing 20, and is connected to both ends of the support plate portion 89 a at right angles to face both side surfaces of the housing 20. A bracket 89 including a pair of support plate portions 89b and 89b is fixed, and the housing 20 is attached to the support plate portion 89a via the mounting means 90 and the support plate portion via the mounting means 91 and 91. It is attached to 89b and 89b.
[0050]
Referring also to FIG. 12, the mounting means 90 provided between the lower portion of the housing 20 and the support plate portion 89a of the bracket 89 has an axis extending vertically and is fixed on the support plate portion 89a. The mount shaft 92 includes a mount rubber 93 having a cylindrical shape into which the mount shaft 92 is fitted. On the other hand, a mounting hole 94 into which the mount rubber 93 is fitted is provided at the lower portion of the housing 20 at a portion located below the through hole 59.
[0051]
The housing 20 is provided with a vent hole 95 coaxially with the mounting hole 94. The vent hole 95 is formed at the outer end of a small-diameter hole portion 95a having an inner end opened at an intermediate portion of the through hole 59. The large-diameter hole portion 95b having a diameter larger than that of the small-diameter hole portion 95a but smaller than that of the mounting hole 94 is formed so as to form an annular step portion 95c facing the outside between the two hole portions 95a and 95b. It consists of coaxial lines.
[0052]
That is, the vent hole 95 is provided in the lower part of the housing 20 so that the inner end thereof is opened in the middle part of the through hole 59 and the outer end is coaxially connected to the mounting hole 94. The rubber 93 is fitted into the attachment hole 94 until it contacts an annular step 96 formed between the ventilation hole 95 and the attachment hole 94.
[0053]
For example, a blocking member 97 formed into a circular sheet shape is made in contact with the stepped portion 95c of the vent hole 95 by a breathable waterproof material represented by, for example, a product name Gore-Tex. On the other hand, a pressing member 99 having a through hole 98 at the center and formed in a disk shape with metal is press-fitted into the large-diameter hole portion 95 b of the vent hole 95. The pressing member 99 is integrally provided with a circular protrusion 99a protruding toward the closing member 97, and the closing member 97 is sandwiched between the protrusion 99a and the step portion 95c of the pressing member 99. The That is, the vent hole 95 is closed by the closing member 97.
[0054]
In the housing 20, an intermediate chamber 100 is formed between the mounting means 90 and the closing member 97, and a ventilation groove 101 that allows the intermediate chamber 100 to communicate with the outside is provided on the outer surface of the mount rubber 93 in the mounting means 90. .
[0055]
Mounting protrusions 102, 102 are integrally projected on both sides of the upper portion of the housing 20, and these mounting protrusions 102, 102 are provided with mounting means 91, 91 above the support plate portions 98 b, 98 b of the bracket 98. Mounted through.
[0056]
The mounting means 91 includes a mounting bolt 103 having an axis extending substantially horizontally and supported on the support plate portion 89b, and a cylindrical mounting rubber 104 into which a part of the mounting bolt 103 is fitted. The mounting protrusion 102 is provided with a bottomed mounting hole 105 into which the mount rubber 104 is fitted.
[0057]
The mount bolt 103 includes a screw shaft portion 103a, a fitting shaft portion 103b that is coaxially and integrally connected to the screw shaft portion 103a, and a radially outward portion from the connecting portion of the screw shaft portion 103a and the fitting shaft portion 103b. And a flange portion 103c projecting from the bottom. On the other hand, a slit 106 opened upward is provided on the upper portion of the support plate portion 89b, and a portion of the screw shaft portion 103a near the flange portion 103c is inserted into the slit 106 from above. Thus, the nut 107 is screwed onto the screw shaft portion 103a, and the support plate portion 89b is sandwiched between the nut 107 and the flange portion 103c, so that the mount bolt 103 is fixed to the support plate portion 89b. Will be supported.
[0058]
Next, to explain the action of this embodiment, the first to fourth normally open solenoid portion 5a of the solenoid valve 5 ₁ to 5 ₄ ..., the solenoid unit of the first through fourth normally closed electromagnetic valve ₆₁ through ₄ 6b... And a storage chamber 48 for storing the electronic control unit 16 is formed between the housing 20 and the cover 21 fastened to the housing 20 via the seal member 71. A vent hole 95 is formed in the housing 20 with the outer end passing through the inner end through the vent path 73 in the lower part of the 48 and is provided in the housing 20. The vent hole 95 is a blocking member 97 made of a breathable waterproof material. It is blocked. Therefore, regardless of the communication structure between the inner end of the vent hole 95 and the storage chamber 48, the action of the closed portion 97 allows the storage chamber 48 to breathe while reliably preventing water from entering the storage chamber. In addition, the communication structure between the ventilation hole 95 and the storage chamber 48 can be simplified, and the processing applied to the housing 20 can be simplified.
[0059]
Moreover, in the middle of the through hole 59 provided between the both surfaces 20a and 20b of the housing 20 so as to allow the motor connector 58 for electrical connection between the electronic control unit 16 and the electric motor 12 to be inserted, The end is open. Accordingly, since the inner end of the vent hole 95 is communicated with the storage chamber 48 using the through hole 59 for electrical connection between the electronic control unit 16 and the electric motor 12, the vent hole 95 is communicated with the storage chamber 48. Therefore, the processing efficiency applied to the housing 20 can be further improved, and the housing 20 can be downsized, that is, the brake fluid pressure control device 3 can be downsized.
[0060]
An attachment hole 93 for fitting a cylindrical mount rubber 93 provided in one of the mounting means 90, 91, 91 for attaching the housing 20 to the vehicle body frame 88 is an outer end of the straight vent hole 95. A ventilation groove 101 is provided on the outer surface of the mount rubber 93 so as to be coaxially connected to the housing 20 and communicate with the outside of the intermediate chamber 100 formed between the closing member 97 and the mounting means 90. Accordingly, it is possible to improve the durability of the closing member 97 by allowing the mount rubber 93 to prevent the foreign material from contacting the closing member 48 while allowing the storage chamber 48 to breathe through the closing member 97. In addition, the processing efficiency applied to the housing 20 can be further improved by drilling the vent hole 95 coaxially.
[0061]
Further, the connector chamber 78 formed between the first and second connector housings 56 and 77 in the connected state of the cover side connector 55 and the external conductor side connector 76 is connected to the storage chamber 48 via the communication hole 86 provided in the cover 21. Communicate. Therefore, a change in the internal pressure of the connector chamber 78 is suppressed as much as possible, a seal failure occurs due to the deformation of the connector housings 56, 77 accompanying the change in internal pressure, or the external conductors 75, 75. Water suction into the connector chamber 78 due to capillary action from the gap between the insulating tubes 83 and the conductive wires 82 can be reliably prevented.
[0062]
In addition, the storage chamber 48 communicates with the outside while preventing the intrusion of water by the action of the closing member 97, so that the internal pressure of the connector chamber 78 and the storage chamber 48 is made equal to the external pressure, and the change of the internal pressure is further increased. It can suppress more effectively, and can also reliably prevent water from entering the storage chamber 48 into the connector chamber 78.
[0063]
Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.
[0064]
For example, in the above embodiment, the vent hole 95 is closed with the closing member 97 made of a breathable waterproof material so that the storage chamber 48 communicates with the outside while preventing water from entering the storage chamber 48. A passage that communicates 48 with the outside may be formed as a maze to prevent water from entering.
[0065]
Further, the present invention can be applied not only to a passenger vehicle but also to a brake fluid pressure control device for a motorcycle.
[0066]
【The invention's effect】
As described above, according to the first aspect of the present invention, the storage chamber communicates with the connector chamber and the electric motor, and the storage chamber, the connector chamber, and the electric motor have a common passage provided in the housing. It communicates with the outside through pores. In this way, the connector chamber communicates with the storage chamber, and further communicates with the outside, so that the internal pressure of the connector chamber and the storage chamber can be made equal to the external pressure, and the change in the internal pressure can be more effectively suppressed. Therefore, kill deformed or occur accompanying poor sealing the connector housing, the to suction is or generated water by capillary action from the gap between the insulation tube and conductor of the external conductor in prevention.
[0067]
According to the invention of claim 2, the motor connector for connecting between the electric motor and the electronic control unit in the storage room passes through the through hole provided in the housing over the one surface and the other surface, A ventilation path communicating with the storage chamber is provided between the inner surface of the through hole and the motor connector, and the ventilation hole communicating the ventilation path with the outside has an opening end of the ventilation hole toward the ventilation path side of the motor. It is provided in the housing so as to face the side surface of the connector. Thus connector chamber communicates with the storage chamber, also because in communication, at equal pressure connector chamber and storage chamber to the outside of the pressure can reduce the change in the internal pressure more effectively to further external Therefore, it is possible to prevent the occurrence of poor sealing due to the deformation of the connector housing, or the suction of water due to capillary action from the gap between the insulating tube of the external conductor and the conductor .
[Brief description of the drawings]
FIG. 1 is a brake hydraulic circuit diagram of a brake device for a passenger vehicle.
FIG. 2 is a side view of the brake fluid pressure control device.
FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2;
4 is a view taken in the direction of arrow 4 in FIG. 2;
5 is a cross-sectional view taken along line 5-5 of FIG.
6 is a cross-sectional view taken along line 6-6 of FIG.
7 is a cross-sectional view taken along line 7-7 of FIG.
8 is a cross-sectional view taken along line 8-8 in FIG.
FIG. 9 is an enlarged view of a portion indicated by an arrow 9 in FIG. 8;
10 is an enlarged sectional view taken along line 10-10 of FIG.
11 is an enlarged cross-sectional view taken along line 11-11 in FIG. 2;
12 is an enlarged view of the main part of FIG. 9. FIG.
[Explanation of symbols]
8 ₁ , 8 ₂ ... Reservoir 20... Housing 20a... One surface 21 of cover... Cover 48. First terminal 75 ... external conductor 76 ... external conductor side connector 77 ... second connector housing 78 ... connector chamber 81 ... second terminal 86 ... communication holes B ₁ and B ₂ , B ₃ , B ₄ ... Wheel brake M... Master cylinder V ₁ , V ₂ , V ₃ , V _4.

Claims

A state in which the master cylinder (M) and the wheel brakes (B ₁ , B ₂ , B ₃ , B ₄ ) communicate with each other and the wheel brakes (B _{1 to} B ₄ ) and the reservoirs (8 ₁ , 8 ₂ ) are disconnected. The master cylinder (M) and the wheel brakes (B ₁ , B ₂ , B ₃ , B ₄ ) are shut off and the wheel brakes (B _{1 to} B ₄ ) and the reservoirs (8 ₁ , 8 ₂ ) are communicated with each other. The state and the state in which the wheel brakes (B ₁ , B ₂ , B ₃ , B ₄ ) are disconnected from the master cylinder (M) and the wheel brakes (B ₁ , B ₂ , B ₃ , B ₄ ) can be switched. Control valve means (V ₁ , V ₂ , V ₃ , V ₄ ) are provided in the housing (20) and house at least the electronic control unit (16) for controlling the control valve means (V _{1 to} V ₄ ). Between the storage chamber (48) and the housing (20) A synthetic resin cover (21) is attached to one surface (20a) of the housing (20), the first connector housing (56) integrally connected to the cover (21), and the electronic control unit A cover-side connector (55) is constituted by a plurality of first terminals (57) that are at least connected to (16) and housed and supported in the first connector housing (56), and the first connector housing (56) A second connector housing (77) that is detachably engaged with each other, and a plurality of second terminals (81) that are individually connected to the plurality of external conductors (75) and housed and supported in the second connector housing (77). And the external conductor side connector (76) is formed between the connector housings (56, 77) in a connected state of the cover side and the external conductor side connector (55, 76). In the connector chamber (78), the first and second terminals (57, 81) are electrically connected to each other, and between the connector housings (56, 77) and the second of the external conductors (75). insertion of the connector housing (77) is sealed, respectively, further wherein the housing (20), said reservoir (8 _1, 8 ₂₎ the master cylinder and absorbed brake fluid (M) and said control valve means In a vehicular brake hydraulic pressure control apparatus to which an electric motor (12) for driving pumps (10 ₁ , 10 ₂ ) to be recirculated between (V ₁ , V ₂ , V ₃ , V ₄ ) is attached ,
The storage chamber (48) communicates with the connector chamber (78) and the electric motor (12). The storage chamber (48), the connector chamber (78), and the electric motor (12) are externally connected. The vehicle brake fluid pressure control device is characterized in that a common ventilation hole (95) communicating with the vehicle is provided in the housing (20) .

A state in which the master cylinder (M) and the wheel brakes (B ₁ , B ₂ , B ₃ , B ₄ ) communicate with each other and the wheel brakes (B _{1 to} B ₄ ) and the reservoirs (8 ₁ , 8 ₂ ) are disconnected. The master cylinder (M) and the wheel brakes (B ₁ , B ₂ , B ₃ , B ₄ ) are shut off and the wheel brakes (B _{1 to} B ₄ ) and the reservoirs (8 ₁ , 8 ₂ ) are communicated with each other. The state and the state in which the wheel brakes (B ₁ , B ₂ , B ₃ , B ₄ ) are disconnected from the master cylinder (M) and the wheel brakes (B ₁ , B ₂ , B ₃ , B ₄ ) can be switched. Control valve means (V ₁ , V ₂ , V ₃ , V ₄ ) are provided in the housing (20) and house at least the electronic control unit (16) for controlling the control valve means (V _{1 to} V ₄ ). Between the storage chamber (48) and the housing (20) A synthetic resin cover (21) is attached to one surface (20a) of the housing (20), the first connector housing (56) integrally connected to the cover (21), and the electronic control unit A cover-side connector (55) is constituted by a plurality of first terminals (57) that are at least connected to (16) and housed and supported in the first connector housing (56), and the first connector housing (56) A second connector housing (77) that is detachably engaged with each other, and a plurality of second terminals (81) that are individually connected to the plurality of external conductors (75) and housed and supported in the second connector housing (77). And the external conductor side connector (76) is formed between the connector housings (56, 77) in a connected state of the cover side and the external conductor side connector (55, 76). In the connector chamber (78), the first and second terminals (57, 81) are electrically connected to each other, and between the connector housings (56, 77) and the second of the external conductors (75). insertion of the connector housing (77) is sealed, respectively, yet on the other surface (20b) of the housing (20), said reservoir (8 _1, 8 ₂₎ to absorb the brake fluid to the master cylinder (M ) and an electric motor controlled actuated by said control valve means _{_{(V 1, V 2, V}} 3, V 4) pump (10 ₁ to reflux during 10 ₂₎ to drive the electronic control unit (16) ( 12) In the vehicle brake hydraulic pressure control apparatus to which 12) is attached ,
The cover (21) is provided with a communication hole (86) for communicating the connector chamber (78) with the storage chamber (48).
A motor connector (58) for connecting the electric motor (12) and the electronic control unit (16) is provided on the housing (20) across one surface (20a) and the other surface (20b). An air passage (73) communicating with the storage chamber (48) is provided between the inner surface of the through hole (59) and the motor connector (58). ,
A vent hole (95) for communicating the vent path (73) with the outside has an open end of the vent hole (95) toward the vent path (73) facing the side surface of the motor connector (58). A brake fluid pressure control device for a vehicle, which is provided in the housing (20) .