JP4153210B2

JP4153210B2 - Valve device and pump device

Info

Publication number: JP4153210B2
Application number: JP2002018649A
Authority: JP
Inventors: 真晃木山; 将則竹内; 愼一伊藤
Original assignee: Asmo Co Ltd
Current assignee: Asmo Co Ltd
Priority date: 2002-01-28
Filing date: 2002-01-28
Publication date: 2008-09-24
Anticipated expiration: 2022-01-28
Also published as: JP2003222262A

Description

【０００１】
【発明の属する技術分野】
本発明は、バルブ装置を備えたポンプ装置に関し、例えば、車両フロントウインドと車両リアウインドに択一的にウォッシャ液を吐出するウォッシャ用のポンプ装置に好適なものである。
【０００２】
【従来の技術】
従来、車両には、車両フロントウインドと車両リアウインドに択一的にウォッシャタンク内のウォッシャ液を吐出するポンプ装置を備えたものがある。そして、このようなポンプ装置としては、正逆回転可能なモータの回転軸にインペラを設け、正逆回転にて択一的に、即ち正回転時には一方の吐出口から、逆回転時には他方の吐出口から液体を吐出させるようにしたものがある。
【０００３】
このようなポンプ装置では、インペラ（セントリフューガルポンプの場合）を正回転させると一方の吐出口側の第１バルブ室内の圧力が大きな正圧となり、他方の吐出口側の第２バルブ室内の圧力が小さな正圧となる。又、インペラを逆回転させると他方の吐出口側の第２バルブ室内の圧力が大きな正圧となり、一方の吐出口側の第１バルブ室内の圧力が小さな正圧となる。そして、小さな正圧側の吐出口からの液体の吐出を防止するために、第１バルブ室と第２バルブ室との間に、該第１バルブ室内と該第２バルブ室内の圧力差によって前記吐出口と対応した通路を開閉する弁体を設け、大きな正圧側のバルブ室と対応した吐出口からのみ液体が吐出されるようにしたものが知られている。このようなポンプ装置では、１つのモータにて２つの吐出口から択一的に液体を吐出させることができる。
【０００４】
【発明が解決しようとする課題】
ところで、上記ポンプ装置は、前記モータや前記インペラ等を備えたポンプ本体の２つの本体吐出口に、前記第１及び第２バルブ室や前記弁体等を備えたバルブ装置が取り付けられて構成される。そして、バルブ装置としては、流入口及び吐出口を有した前記第１バルブ室を形成する第１分割ハウジングと、流入口及び吐出口を有した前記第２バルブ室を形成する第２分割ハウジングと、前記弁体とを備えたものがある。尚、第１及び第２分割ハウジングの２つの流入口は、前記本体吐出口にそれぞれ連結（連通）される。
【０００５】
しかしながら、上記バルブ装置では、第１バルブ室と第２バルブ室との間に弁体が介在されるように結合される第１分割ハウジングと第２分割ハウジングとの結合部分が、例えば、印籠結合可能な大筒部と該大筒部に内嵌される小筒部とされる。これにより、第１分割ハウジングと第２分割ハウジングとが異なる形状となる。よって、それらを成形するための金型が２種類必要、もしくは、同じ金型でも異なる型形状が必要となる。そして、第１及び第２分割ハウジングは異なる金型（型形状）で成形されるため、その成形時にそれぞれ（金型毎）の寸法誤差が生じることがある。よって、第１バルブ室と第２バルブ室の大きさが設計値からそれぞれズレることで、一方と他方で液体の流れが大きく異なるといった虞がある。又、大筒部と小筒部の径が設計値からそれぞれズレることで、良好な印籠結合を得ることができないといった虞がある。さらに、それぞれの流入口の位置が設計位置からそれぞれズレることで、該流入口を構成する流入筒部が平行とならず、該２つの流入口を２つの前記本体吐出口に同時に連結できないなど良好に連結できないといった虞がある。これらのことは、バルブ装置の歩留まりを低下させる原因となる。よって、バルブ装置の製造コストが高くなるという問題がある。
【０００６】
本発明は、上記問題点を解決するためになされたものであって、その目的は、低コストで製造することができるバルブ装置、及びポンプ装置を提供することにある。
【０００７】
【課題を解決するための手段】
請求項１に記載の発明は、流入口及び吐出口を有する第１バルブ室を形成するための第１分割ハウジングと、前記第１分割ハウジングに固定され、流入口及び吐出口を有する第２バルブ室を形成するための第２分割ハウジングと、前記第１バルブ室と前記第２バルブ室間に介在され、該第１バルブ室内と該第２バルブ室内の圧力差によって前記流入口又は前記吐出口を開閉する弁体とを備えたバルブ装置において、前記第１及び第２分割ハウジングは同一形状の分割ハウジングから構成され、該同一形状の分割ハウジングはそれぞれ嵌合部を備え、該嵌合部は、それを均等に分割する直線に対して一方側が一側嵌合部とされるとともに他方側が他側被嵌合部とされ、前記第１分割ハウジングの一側嵌合部と第２分割ハウジングの他側被嵌合部とが嵌合するとともに前記第１分割ハウジングの他側被嵌合部と第２分割ハウジングの一側嵌合部とが嵌合することで、前記第１分割ハウジングと第２分割ハウジングとが嵌合固定される。
【０００８】
請求項２に記載の発明は、請求項１に記載のバルブ装置において、前記第１及び第２分割ハウジングの前記両流入口を、前記第１及び第２分割ハウジングの周面からそれぞれ突出する筒状の流入筒部に形成し、前記第１及び第２分割ハウジングの前記嵌合部は、互いに嵌合固定されたとき、前記両流入筒部を平行に配置するように形成される。
【０００９】
請求項３に記載の発明は、請求項１又は２に記載のバルブ装置において、前記弁体を、弾性材料にて形成し、前記第１及び第２分割ハウジングは、互いに嵌合固定されたとき、その内側に前記弁体の外周縁部を挟持する挟持部を有する。
【００１０】
請求項４に記載の発明は、請求項３に記載のバルブ装置において、前記弁体は、前記外周縁部の内側に環状で薄肉の薄肉部と、前記薄肉部の更に内側に前記流入口又は前記吐出口を閉塞するための弁本体部とが連続して一体に形成されたものであって、前記第１及び第２分割ハウジングが互いに嵌合固定されたとき、前記外周縁部の内側に突出することで該外周縁部の内側への移動を規制して該弁体を保持する保持突起を前記第１及び第２分割ハウジングに形成し、前記保持突起の突出量は、前記薄肉部が導出される前記保持突起の間隔が前記薄肉部の肉厚より大きくなるように設定される。
【００１１】
請求項５に記載の発明は、流入口及び吐出口を有する第１バルブ室を形成するための第１分割ハウジング、前記第１分割ハウジングに固定され流入口及び吐出口を有する第２バルブ室を形成するための第２分割ハウジング、及び、前記第１バルブ室と前記第２バルブ室間に介在され該第１バルブ室内と該第２バルブ室内の圧力差によって前記流入口又は前記吐出口を開閉する弁体を有するバルブ装置と、モータが正回転または逆回転されることで、２つの前記流入口にそれぞれ連結される本体吐出口のうち何れか一方が他方に比べて大きな正圧の圧力の液体を供給するポンプ本体と、を備えたポンプ装置において、前記第１及び第２分割ハウジングは同一形状の分割ハウジングから構成され、該同一形状の分割ハウジングはそれぞれ嵌合部を備え、該嵌合部は、それを均等に分割する直線に対して一方側が一側嵌合部とされるとともに他方側が他側被嵌合部とされ、前記第１分割ハウジングの一側嵌合部と第２分割ハウジングの他側被嵌合部とが嵌合するとともに前記第１分割ハウジングの他側被嵌合部と第２分割ハウジングの一側嵌合部とが嵌合することで、前記第１分割ハウジングと第２分割ハウジングとが嵌合固定される。
【００１２】
請求項６に記載の発明は、請求項５に記載のポンプ装置において、２つの前記本体吐出口は、所定間隔を有して並設されるものであって、前記第１及び第２分割ハウジングの前記両流入口を、前記第１及び第２分割ハウジング（１１，１２）の周面からそれぞれ突出する筒状の流入筒部に形成し、前記第１及び第２分割ハウジングの前記嵌合部は、互いに嵌合固定されたとき、前記両流入筒部を平行に配置するように形成される。
【００１３】
請求項７に記載の発明は、請求項５又は６に記載のポンプ装置において、前記弁体を、弾性材料にて形成し、前記第１及び第２分割ハウジングは、互いに嵌合固定されたとき、その内側に前記弁体の外周縁部を挟持する挟持部を有する。
【００１４】
請求項８に記載の発明は、請求項７に記載のポンプ装置において、前記弁体は、前記外周縁部の内側に環状で薄肉の薄肉部と、前記薄肉部の更に内側に前記流入口又は前記吐出口を閉塞するための弁本体部とが連続して一体に形成されたものであって、前記第１及び第２分割ハウジングが互いに嵌合固定されたとき、前記外周縁部の内側に突出することで該外周縁部の内側への移動を規制して該弁体を保持する保持突起を前記第１及び第２分割ハウジングに形成し、前記保持突起の突出量は、前記薄肉部が導出される前記保持突起の間隔が前記薄肉部の肉厚より大きくなるように設定される。
【００１５】
請求項９に記載の発明は、請求項５乃至８のいずれか１項に記載のポンプ装置において、前記本体吐出口と前記流入口とを、嵌着可能とし、そのいずれか一方に弾性材料よりなり嵌着された際に他方に密着するシール部材を設けた。
【００１６】
請求項１０に記載の発明は、筒状に突出した流入筒部に形成された流入口と吐出口とを有する第１バルブ室を形成するための第１分割ハウジングと、前記第１分割ハウジングに前記流入筒部の直交方向から嵌合固定され、筒状に突出した流入筒部に形成された流入口と吐出口とを有する第２バルブ室を形成するための第２分割ハウジングと、前記第１バルブ室と前記第２バルブ室間に介在され、該第１バルブ室内と該第２バルブ室内の圧力差によって前記吐出口を開閉して前記第１分割ハウジング側の前記流入口と前記吐出口及び前記第２分割ハウジング側の前記流入口と前記吐出口を択一的に連通する弁体と、を備えたバルブ装置において、前記第１及び第２分割ハウジングは同一形状の分割ハウジングから構成され、該同一形状の分割ハウジングはそれぞれ略円環状の嵌合部を備え、該嵌合部は、それを均等に分割する直線に対して一方側が一側嵌合部とされるとともに他方側が他側被嵌合部とされ、前記第１分割ハウジングの一側嵌合部と第２分割ハウジングの他側被嵌合部とが嵌合するとともに前記第１分割ハウジングの他側被嵌合部と第２分割ハウジングの一側嵌合部とが嵌合することで、前記第１分割ハウジングと第２分割ハウジングとが嵌合固定され、前記嵌合部には、前記第１及び第２分割ハウジングの嵌合部が嵌合固定されたときに周方向に係合することで２つの前記流入筒部を平行に位置せしめる回り止め凸部及び回り止め凹部が形成され、前記一側嵌合部は前記回り止め凹部を含んで構成されるとともに前記他側被嵌合部は前記回り止め凸部を含んで構成される。
【００１７】
請求項１１に記載の発明は、請求項１０に記載のバルブ装置において、前記第１及び第２分割ハウジングのそれぞれに形成された前記吐出口は、前記第１及び第２分割ハウジングの嵌合固定状態において同一直線上に形成されると共に、前記第１及び第２バルブ室の前記直線方向内方に筒状に突出した内側吐出筒部及び前記直線方向外方に筒状に突出した外側吐出筒部を有し、前記第１及び第２分割ハウジングの前記流入筒部は、その出口が前記内側吐出筒部の外周面に対向して設けられている。
【００１８】
（作用）
請求項１に記載の発明によれば、第１及び第２分割ハウジングには、それぞれ嵌合部が形成され、該嵌合部が、該嵌合部を均等に分割する直線に対して対称の位置にそれぞれ形成されて互いに嵌合可能な一側嵌合部と他側被嵌合部とからなることで、第１及び第２分割ハウジングが嵌合固定可能とされながらも両部品形状を同一形状にできる。よって、第１及び第２分割ハウジングを成形するための金型が１種類となる。又、バルブ装置のハウジングは、同一の金型で形成された第１及び第２分割ハウジング、すなわち同一部品同士を嵌合固定して構成されるため、部品種類を低減できると共に、各分割ハウジングの成形時の寸法誤差が統一される。
【００１９】
請求項２に記載の発明によれば、第１及び第２分割ハウジングの流入口は、第１及び第２分割ハウジングの周面からそれぞれ突出する筒状の流入筒部に形成され、第１及び第２分割ハウジングの嵌合部は、互いに嵌合固定されたとき、両流入筒部が平行に配置されるように形成される。よって、嵌合固定されたとき、２つの流入筒部がズレて非平行とされることがなく平行とされ、例えば外部の平行に配置された筒部等に同時に嵌合連結可能となり良好に連結することができる。
【００２０】
請求項３に記載の発明によれば、弁体は、弾性材料にて形成される。そして、弁体の外周縁部は、第１及び第２分割ハウジングが互いに嵌合固定されたとき、第１及び第２分割ハウジングがその嵌合部の内側に有する挟持部にて狭持される。よって、弁体にて第１及び第２バルブ室が区画されるとともに、前記嵌合部のシールがなされる。
【００２１】
請求項４に記載の発明によれば、前記弁体は、前記外周縁部の内側に環状で薄肉の薄肉部と、前記薄肉部の更に内側に前記流入口又は前記吐出口を閉塞するための弁本体部とが連続して一体に形成されたものとされる。そして、弁体の外周縁部は、第１及び第２分割ハウジングが互いに嵌合固定されたとき、外周縁部の内側に突出する第１及び第２分割ハウジングの保持突起にて内側への移動が規制され保持される。しかも、保持突起の突出量は、前記薄肉部が導出される前記保持突起の間隔が前記薄肉部の肉厚より大きくなるように設定されるため、該薄肉部が挟持されない。よって、弁体を確実に保持しながらも繰り返し撓む薄肉部の損傷を低減することができる。
【００２２】
請求項５に記載の発明によれば、第１及び第２分割ハウジングには、それぞれ嵌合部が形成され、該嵌合部が、該嵌合部を均等に分割する直線に対して対称の位置にそれぞれ形成されて互いに嵌合可能な一側嵌合部と他側被嵌合部とからなることで、第１及び第２分割ハウジングが嵌合固定可能とされながらも両部品形状を同一形状にできる。よって、第１及び第２分割ハウジングを成形するための金型が１種類となる。又、バルブ装置のハウジングは、同一の金型で形成された第１及び第２分割ハウジング、すなわち同一部品同士を嵌合固定して構成されるため、部品種類を低減できると共に、各分割ハウジングの成形時の寸法誤差が統一される。
【００２３】
請求項６に記載の発明によれば、第１及び第２分割ハウジングの流入口は、第１及び第２分割ハウジングの周面からそれぞれ突出する筒状の流入筒部に形成され、第１及び第２分割ハウジングの嵌合部は、互いに嵌合固定されたとき、両流入筒部が平行に配置されるように形成される。よって、嵌合固定されたとき、２つの流入筒部がズレて非平行とされることがなく平行とされ、例えば平行に配置された本体吐出口に同時に嵌合連結可能となり良好に連結することができる。
【００２４】
請求項７に記載の発明によれば、弁体は、弾性材料にて形成される。そして、弁体の外周縁部は、第１及び第２分割ハウジングが互いに嵌合固定されたとき、第１及び第２分割ハウジングがその嵌合部の内側に有する挟持部にて狭持される。よって、弁体にて第１及び第２バルブ室が区画されるとともに、前記嵌合部のシールがなされる。
【００２５】
請求項８に記載の発明によれば、前記弁体は、前記外周縁部の内側に環状で薄肉の薄肉部と、前記薄肉部の更に内側に前記流入口又は前記吐出口を閉塞するための弁本体部とが連続して一体に形成されたものとされる。そして、弁体の外周縁部は、第１及び第２分割ハウジングが互いに嵌合固定されたとき、外周縁部の内側に突出する第１及び第２分割ハウジングの保持突起にて内側への移動が規制され保持される。しかも、保持突起の突出量は、前記薄肉部が導出される前記保持突起の間隔が前記薄肉部の肉厚より大きくなるように設定されるため、該薄肉部が挟持されない。よって、弁体を確実に保持しながらも繰り返し撓む薄肉部の損傷を低減することができる。
【００２６】
請求項９に記載の発明によれば、本体吐出口と流入口は、嵌着可能とされ、そのいずれか一方には弾性材料よりなり嵌着された際に他方に密着するシール部材が設けられる。よって、本体吐出口と流入口とを容易に連結することができる。しかも、連結時にシール部材にて該個所のシールがなされる。
【００２７】
請求項１０に記載の発明によれば、第１及び第２分割ハウジングには、それぞれ略円環状の嵌合部が形成され、該嵌合部が、該嵌合部を均等に分割する直線に対して対称の位置にそれぞれ形成されて互いに嵌合可能な一側嵌合部と他側被嵌合部とからなることで、第１及び第２分割ハウジングが嵌合固定可能とされながらも両部品形状を同一形状にできる。よって、第１及び第２分割ハウジングを成形するための金型が１種類となる。又、バルブ装置のハウジングは、同一の金型で形成された第１及び第２分割ハウジング、すなわち同一部品同士を嵌合固定して構成されるため、部品種類を低減できると共に、各分割ハウジングの成形時の寸法誤差が統一される。また、第１及び第２分割ハウジングが有する略円環状の嵌合部が互いに嵌合固定されたとき、略円環状の嵌合部に形成された回り止め凸部及び回り止め凹部が周方向に係合することで２つの流入筒部が平行とされる。よって、嵌合固定されたとき、２つの流入筒部がズレて非平行とされることがなく、例えば外部の平行に配置された筒部等に同時に嵌合連結可能となり良好に連結することができる。
【００２８】
請求項１１に記載の発明によれば、流入筒部は、その出口が前記内側吐出筒部の外周面に対向して設けられているため、流入筒部から流入される液体が内側吐出筒部の周囲に回り込み易くなり、弁体に、より一様な圧力が加わることとなり、良好に吐出口が閉塞される。
【００２９】
【発明の実施の形態】
以下、本発明を車両のウォッシャ用のポンプ装置に具体化した一実施の形態を図１〜図６に従って説明する。ポンプ装置１は、図１に示すように、ポンプ本体２、及びバルブ装置３を備えている。
【００３０】
ポンプ本体２は、図１に示すように、モータ４、ハウジング５、インペラ６、及びポンプ室カバー７等を備えている。モータ４は、外部から供給される電源電圧に応じて回転軸８を正逆回転可能とされている。ハウジング５は、略有底筒形状に形成され、前記モータ４を略収容するモータ収容部５ａと、該モータ収容部５ａに沿って平行に延びる一対の流路５ｂ，５ｃ（図２参照）とが形成されている。モータ収容部５ａの底部（図１中、左側端部）には、外部に貫通する貫通孔５ｄが形成されている。そして、前記モータ４は、その回転軸８の先端部がシールされて貫通孔５ｄを貫通して外部に突出するようにモータ収容部５ａに収容される。この回転軸８の先端にはインペラ６（図２参照）が固定されている。
【００３１】
前記流路５ｂ，５ｃの一端部（回転軸８の先端側の端部であって、図１中、左側端部）は、そのまま外部に開口している。流路５ｂ，５ｃの他端部（図１中、右側端部）は、外部方向（ハウジング５の径方向外側）に屈曲され、ハウジング５から筒状に突出した本体吐出筒部５ｅ，５ｆ（図３参照）から外部に開口している。この２つの本体吐出筒部５ｅ，５ｆは、図３に示すように、所定間隔を有して並設され、平行に突出している。又、各本体吐出筒部５ｅ，５ｆの外周には、環状の嵌合凸部５ｇ及びリング収容凹部５ｈが形成され、該リング収容凹部５ｈには弾性材料（本実施の形態ではゴム材）よりなるシール部材としてのシールリング９が外嵌されている。尚、シールリング９は、リング収容凹部５ｈに外嵌された状態でその外周側が本体吐出筒部５ｅ，５ｆの外周から突出するように設定されている。又、本実施の形態では、本体吐出筒部５ｅ，５ｆが本体吐出口５ｉ，５ｊを構成している。
【００３２】
前記ハウジング５の一端部（回転軸８の先端側の端部であって、図１中、左側端部）には、ポンプ室カバー７が固定される。ポンプ室カバー７には、図１及び図２に示すように、前記インペラ６の回転を妨げないようにインペラ６と対応して凹設されたインペラ収容凹部７ａと、該インペラ収容凹部７ａの所定角度位置からそれぞれ前記流路５ｂ，５ｃの一端部に繋がるように凹設された第１及び第２連通凹部７ｂ，７ｃとが形成されている。この第１連通凹部７ｂは、図２に示すように、一端側（図１中、左側）から見て径方向外側に向かうほど反時計回り方向に向かうように湾曲して形成され、第２連通凹部７ｃは、一端側（図１中、左側）から見て径方向外側に向かうほど時計回り方向に向かうように湾曲して形成されている。又、ポンプ室カバー７のインペラ収容凹部７ａの底部中央には、図１に示すように、外部に貫通する取込孔７ｄが形成されている。尚、本実施の形態では、インペラ収容凹部７ａとハウジング５の一端面とによりポンプ室１０が形成されている。
【００３３】
バルブ装置３は、図３に示すように、バルブハウジングを構成する第１及び第２分割ハウジング１１，１２と、弁体１３とを備えている。
第１分割ハウジング１１は、流入口１４及び吐出口１５を有する第１バルブ室１６を形成するためのものであって、第２分割ハウジング１２は、流入口１７及び吐出口１８を有する第２バルブ室１９を形成するためのものである。弁体１３は、前記第１バルブ室１６と前記第２バルブ室１９との間に介在され、該第１バルブ室１６内と該第２バルブ室１９内の圧力差によって前記吐出口１５，１８の一方を開き、他方を閉じるためのものである。そして、前記第１及び第２分割ハウジング１１，１２は、互いに嵌合固定可能とされながらも両部品の形状は同一形状、すなわち同一部品として形成されている。
【００３４】
詳述すると、第１分割ハウジング１１は、図４及び図５に示すように、本体部２１と、外延部２２と、流入筒部２３と、内側吐出筒部２４と、外側吐出筒部２５とを備える。本体部２１は、略有底筒形状に形成されている。外延部２２は、本体部２１の開口部から径方向外側に延設されている。流入筒部２３は、本体部２１の外周（周面）の一部から本体部２１の中心軸Ｓ１直交方向（図４（ｂ）及び図５中、上方向）に筒状に突出して形成され、本体部２１の外側と内側を連通するように形成されている。内側吐出筒部２４は、本体部２１の底部中央から本体部２１の中心軸Ｓ１方向の内側方向（本体部２１の開口方向）に筒状に突出、すなわち第１バルブ室１６内側に筒状に突出して形成されている。外側吐出筒部２５は、本体部２１の底部中央から本体部２１の中心軸Ｓ１方向の外側方向（内側吐出筒部２４の逆方向）に筒状に突出、すなわち第１バルブ室１６外側に筒状に突出して形成されている。そして、内側及び外側吐出筒部２４，２５は、同一直線（前記中心軸Ｓ１）上で連通され、本体部２１の内側と外側を連通するように形成されている。尚、本実施の形態では、流入筒部２３が前記流入口１４を構成し、内側及び外側吐出筒部２４，２５が前記吐出口１５を構成している。
【００３５】
前記外延部２２には、嵌合部２６が形成されている。嵌合部２６は、外延部２２の外縁に沿って略円環状に形成されている。詳しくは、嵌合部２６は、外延部２２の外縁に沿って立設された略円弧形状の外円弧部２６ａと内円弧部２６ｂを備える。外円弧部２６ａと内円弧部２６ｂは、図４（ｂ）に示すように、本体部２１の軸方向から見て、嵌合部２６を均等に分割する直線であって、本体部２１の軸中心Ｓ１と流入筒部２３の軸中心を通る直線Ｌ１に対して（一方に外円弧部２６ａ、他方に内円弧部２６ｂとなるように）それぞれ対称の位置に形成されている。外円弧部２６ａには、その径方向の内外に貫通する連結スリット２６ｃが周方向に２つ形成されている。内円弧部２６ｂの外周面（外側の面）は、図４（ｂ）に示すように、前記外円弧部２６ａの内周面（内側の面）と、本体部２１の軸中心Ｓ１からの距離（半径）が等しくなるように設定されている。そして、内円弧部２６ｂの外周面には、該外周面と外円弧部２６ａの内周面を合わせた際に前記連結スリット２６ｃに嵌る連結爪２６ｄが形成されている。
【００３６】
又、前記嵌合部２６は、回り止め凹部２６ｅ，２６ｆ、及び回り止め凸部２６ｇ，２６ｈを備える。回り止め凹部２６ｅ，２６ｆと回り止め凸部２６ｇ，２６ｈは、図４（ｂ）に示すように、本体部２１の軸方向から見て、前記直線Ｌ１に対して（一方に回り止め凹部２６ｅ，２６ｆ、他方に回り止め凸部２６ｇ，２６ｈとなるように）それぞれ対称の位置に形成されている。尚、本実施の形態では、前記直線Ｌ１に対して一方（図４（ｂ）中、左方）の外円弧部２６ａ及び回り止め凹部２６ｅ，２６ｆ等が一側嵌合部を構成し、同直線Ｌ１に対して他方（図４（ｂ）中、右方）の内円弧部２６ｂ及び回り止め凸部２６ｇ，２６ｈ等が他側被嵌合部を構成している。
【００３７】
一方の回り止め凹部２６ｅと回り止め凸部２６ｇは、嵌合部２６の円周方向において前記流入筒部２３と１８０°反対側（点対称位置）において、互いに隣接して形成されている。回り止め凸部２６ｇは、前記内円弧部２６ｂの反流入筒部２３側から連続し径方向外側に延びるように形成されている。又、回り止め凹部２６ｅは、前記外円弧部２６ａの反流入筒部２３側端部と回り止め凸部２６ｇとによって形成される隙間である。
【００３８】
他方の回り止め凹部２６ｆと回り止め凸部２６ｈは、前記流入筒部２３側において、離間して形成されている。回り止め凸部２６ｈは、前記内円弧部２６ｂの流入筒部２３側から連続し径方向外側に延びるように形成されている。又、回り止め凹部２６ｆは、前記外円弧部２６ａの流入筒部２３側端部と中間円弧部２６ｉとによって形成される隙間である。ここで、前記中間円弧部２６ｉは、嵌合部２６の一部を構成するものであって、外延部２２の外縁に沿って前記内円弧部２６ｂの突出量Ｔ１（図４（ａ）参照）の略半分の突出量Ｔ２で立設され、前記回り止め凸部２６ｈから周方向に連続し前記直線Ｌ１に対して対称位置まで形成されたものである。
【００３９】
又、前記外延部２２において前記嵌合部２６の内側には、図４（ｂ）に示すように、本体部２１の軸方向から見て、円環状の平面である挟持部２７が形成されている。又、前記外延部２２において前記挟持部２７の内側であって、同外延部２２の内縁には、図４（ｂ）及び図５に示すように、円環状の保持突起２８が立設されている。
【００４０】
前記流入筒部２３は、図３に示すように、前記本体吐出筒部５ｅと嵌着可能となるように、その内周が前記本体吐出筒部５ｅの外周と対応して形成され、その内周には、前記本体吐出筒部５ｅの嵌合凸部５ｇと嵌合可能な環状の嵌合凹部２３ａが形成されている。又、流入筒部２３（流入口１４）の位置は、その本体部２１側端部（出口）が、前記内側吐出筒部２４の外周面と対向するように設定されている。
【００４１】
前記内側吐出筒部２４の先端部（本体部２１の開口側端部）には、その内縁が本体部２１の中心軸Ｓ１方向に延設されてなる弁座部２４ａが形成されている。尚、この弁座部２４ａは、その断面が半円状に形成され、その成形時に、少なくともその先端部にバリ等が発生しないように金型の型合わせ面が配置されないようにして成形されている。
【００４２】
前記外側吐出筒部２５の先端部には、外部のホース等と容易に連結可能とするための係合突起２５ａが形成されている。
尚、本実施の形態では、前記第２分割ハウジング１２は、前記第１分割ハウジング１１と同一形状（同一部品形状）であるため、同様の部分に同様の符号を付してその詳細な説明を省略する。
【００４３】
そして、上記第１及び第２分割ハウジング１１，１２は、互いに内円弧部２６ｂの外周面に外円弧部２６ａの内周面が合わせられ、連結スリット２６ｃに連結爪２６ｄが嵌り、回り止め凹部２６ｅ，２６ｆに回り止め凸部２６ｇ，２６ｈが嵌ることで互いに嵌合固定可能とされている。
【００４４】
前記弁体１３は、図６（ｂ）に示すように、弾性材料（本実施の形態ではゴム材）よりなり、略円盤形状に形成されている。弁体１３は、肉厚の厚い外周縁部１３ａと、外周縁部１３ａの内側（径方向内側）に形成された環状で薄肉の薄肉部１３ｂと、薄肉部１３ｂの内側（径方向内側）、即ち中央に形成され、前記弁座部２４ａ（吐出口１５）を閉塞するための円盤形状で中肉の弁本体部１３ｃとが連続して一体成形されてなる。
【００４５】
ここで、図６（ａ），（ｂ）に示すように、上記のように第１及び第２分割ハウジング１１，１２が嵌合固定されたとき、対向する前記挟持部２７の間隔Ｈ１と、前記弁体１３の外周縁部１３ａの肉厚の厚さＷ１との関係は、間隔Ｈ１の方が厚さＷ１より小さくなるように（Ｈ１＜Ｗ１）設定されている。
【００４６】
又、上記のように第１及び第２分割ハウジング１１，１２が嵌合固定されたとき、対向する前記保持突起２８の間隔（薄肉部１３ｂが導出される保持突起２８の間隔）Ｈ２と、前記弁体１３の薄肉部１３ｂの肉厚の厚さＷ２との関係は、間隔Ｈ２の方が厚さＷ２より大きくなるように（Ｈ２＞Ｗ２）設定されている。
【００４７】
そして、上記第１及び第２分割ハウジング１１，１２と弁体１３は、図３に示すように、弁体１３が間に介在されるように嵌合部２６が嵌合固定されることで組み付けられている。このとき、弁体１３は、その外周縁部１３ａが前記挟持部２７にて狭持される。又、このとき、弁体１３は、外周縁部１３ａがその内側（径方向内側）に突出する保持突起２８にて内側（径方向内側）への移動が規制されて保持される。そして、このとき、第１及び第２分割ハウジング１１，１２の各本体部２１の内部は、弁体１３にてそれぞれ区画されることで第１バルブ室１６と第２バルブ室１９とを形成する。
【００４８】
又、このとき、嵌合部２６において、外円弧部２６ａと内円弧部２６ｂ、回り止め凹部２６ｅ，２６ｆと回り止め凸部２６ｇ，２６ｈは、本体部２１の軸中心Ｓ１と流入筒部２３の軸中心を通る直線Ｌ１に対してそれぞれ対称の位置に形成されていることから、第１及び第２分割ハウジング１１，１２を互いに嵌合固定したときに、２つの流入筒部２３が平行となるように配置される。詳しくは、このとき、上記のように配置された回り止め凹部２６ｅ，２６ｆに回り止め凸部２６ｇ，２６ｈが嵌り、互いに周方向に係合することから流入筒部２３が前記周方向にズレることなく平行となるように配置される。尚、このとき、２つの流入筒部２３は、図３に示すように、２つの本体吐出筒部５ｅ，５ｆと同様の所定間隔となるように設定されている。
【００４９】
上記のように組み付けられたバルブ装置３は、各流入筒部２３が各本体吐出筒部５ｅ，５ｆに嵌着されることで、詳しくは、流入筒部２３内に本体吐出筒部５ｅ，５ｆが嵌入され、嵌合凹部２３ａと嵌合凸部５ｇが嵌合されることで、ポンプ本体２に対して固定される。尚、このとき、流入筒部２３及び本体吐出筒部５ｅ，５ｆが樹脂材よりなり、若干撓むことから前記嵌入が可能となる。又、このとき、前記シールリング９は、リング収容凹部５ｈと流入筒部２３の内周との間で径方向に圧縮されて密着される。
【００５０】
上記のように構成されたポンプ装置１は、ポンプ本体２の取込孔７ｄが図示しない車両のウォッシャタンクに連通されるように車両に配設される。又、バルブ装置３の第１分割ハウジング１１の外側吐出筒部２５（吐出口１５）が図示しないホース等を介して車両フロントウインドのフロントウォッシャノズルに連通される。又、第２分割ハウジング１２の外側吐出筒部２５（吐出口１８）が図示しないホース等を介して車両リアウインドのリアウォッシャノズルに連通される。
【００５１】
上記のように構成されたポンプ装置１では、モータ４を駆動し、回転軸８及びインペラ６を正回転（本実施の形態では、図２中、反時計回り回転）させると、ウォッシャ液が取込孔７ｄから吸引され、該ウォッシャ液が第１連通凹部７ｂ側（一方の本体吐出筒部５ｅ側）に大きな正圧の圧力で供給される。尚、このとき、第２連通凹部７ｃ側（他方の本体吐出筒部５ｆ側）にも小さな正圧の圧力が加わる。
【００５２】
すると、第１連通凹部７ｂと連通した第１分割ハウジング１１側の第１バルブ室１６内の圧力が大きな正圧となり、第２連通凹部７ｃと連通した第２分割ハウジング１２側の第２バルブ室１９内の圧力が小さな正圧となる。
【００５３】
すると、第１バルブ室１６内と第２バルブ室１９内の圧力差によって前記弁体１３の弁本体部１３ｃが、第２バルブ室１９側（第２分割ハウジング１２側）の弁座部２４ａに押圧接触され、該吐出口１８が閉塞される（流入口１７と吐出口１８とが非連通とされる）。
【００５４】
よって、流入口１４と吐出口１５とが連通され、第１バルブ室１６側（第１分割ハウジング１１側）の吐出口１５からのみウォッシャ液が流出（吐出）される。これにより、ウォッシャ液がフロントウォッシャノズルから車両フロントウインドに噴射される。
【００５５】
一方、モータ４を駆動し、回転軸８及びインペラ６を逆回転（本実施の形態では、図２中、時計回り回転）させると、ウォッシャ液が取込孔７ｄから吸引され、該ウォッシャ液が第２連通凹部７ｃ側（他方の本体吐出筒部５ｆ側）に大きな正圧の圧力で供給される。尚、このとき、第１連通凹部７ｂ側（一方の本体吐出筒部５ｅ側）にも小さな正圧の圧力が加わる。
【００５６】
すると、第２連通凹部７ｃと連通した第２分割ハウジング１２側の第２バルブ室１９内の圧力が大きな正圧となり、第１連通凹部７ｂと連通した第１分割ハウジング１１側の第１バルブ室１６内の圧力が小さな正圧となる。
【００５７】
すると、第１バルブ室１６内と第２バルブ室１９内の圧力差によって前記弁体１３の弁本体部１３ｃが、第１バルブ室１６側（第１分割ハウジング１１側）の弁座部２４ａに押圧接触され、該吐出口１５が閉塞される（流入口１４と吐出口１５とが非連通とされる）。
【００５８】
よって、流入口１７と吐出口１８とが連通され、第２バルブ室１９側（第２分割ハウジング１２側）の吐出口１８からのみウォッシャ液が流出（吐出）される。これにより、ウォッシャ液がリアウォッシャノズルから車両リアウインドに噴射される。つまり、モータ４の回転方向を切り替えることにより、第１バルブ室１６内と第２バルブ室１９内の圧力差を生じせしめ、その圧力差によって弁体１３が流入口１４と吐出口１５及び流入口１７と吐出口１８を択一的に連通する。そして、連通された吐出口から車両フロントウインドまたは車両リヤウインドにウォッシャ液が供給される。
【００５９】
次に、上記実施の形態の特徴的な作用効果を以下に記載する。
（１）第１及び第２分割ハウジング１１，１２は、互いに嵌合固定可能とされながら同一形状とされている。よって、部品種類を低減できるので、その部品管理が容易となり、ひいては製造コストを低減することができる。又、第１及び第２分割ハウジング１１，１２を成形するための金型が１種類となる。これにより、金型を含む製造ライン等のコストが低減され、ひいては製造コストを低減することができる。又、第１及び第２分割ハウジング１１，１２は同一の金型で成形されるため、その成形時の寸法誤差が統一される（それぞれ別種類の寸法誤差が生じない）。また、同一形状の第１及び第２分割ハウジングを互いに嵌合固定することでバルブハウジングを構成、すなわち同一部品同士を嵌合固定してバルブハウジングを構成するため、第１バルブ室１６と第２バルブ室１９の大きさが仮に設計値からズレた場合でも両バルブ室内の液体の流れは略同一となり、両吐出口において近似した特性を得ることができる。このことから、バルブ装置３の歩留まりを向上させることができ、ひいてはバルブ装置３及びポンプ装置１の製造コストを低減することができる。
【００６０】
（２）嵌合部２６には、２つの流入筒部２３が平行となるようにするための回り止め凹部２６ｅ，２６ｆと回り止め凸部２６ｇ，２６ｈが形成される。そして、嵌合固定されたときに回り止め凹部２６ｅ，２６ｆに回り止め凸部２６ｇ，２６ｈが嵌り、互いに周方向に係合することから流入筒部２３が前記周方向にズレることなく平行となるように配置される。よって、２つの流入筒部２３を２つの本体吐出筒部５ｅ，５ｆに同時に嵌合連結できるので良好に連結固定することができる。
【００６１】
（３）弁体１３は、弾性材料よりなり、第１及び第２分割ハウジング１１，１２が嵌合固定されたときに、その外周縁部１３ａが前記嵌合部２６の内側に形成された挟持部２７にて狭持される。よって、弁体１３にて第１及び第２バルブ室１６，１９が区画されるとともに、該嵌合部２６のシールがなされる。
【００６２】
（４）弁体１３は、第１及び第２分割ハウジング１１，１２が嵌合固定されたときに、その外周縁部１３ａがその内側（径方向内側）に突出する保持突起２８にて内側（径方向内側）への移動が規制されて保持される。しかも、保持突起２８の突出量は、第１及び第２分割ハウジング１１，１２が嵌合固定されたときに対向する前記保持突起２８の間隔（対向間隔）Ｈ２が、弁体１３の薄肉部１３ｂの肉厚の厚さＷ２より大きくなるように設定されるため、該薄肉部１３ｂが挟持されない。よって、弁体１３を確実に保持しながらも繰り返し撓む薄肉部１３ｂの損傷を低減することができる。
【００６３】
（５）本体吐出筒部５ｅと流入筒部２３は、嵌着可能とされている。そして、本体吐出筒部５ｅのリング収容凹部５ｈに外嵌されたシールリング９は、リング収容凹部５ｈと流入筒部２３の内周との間で径方向に圧縮されて密着される。よって、本体吐出筒部５ｅと流入筒部２３とを容易に連結することができる。しかも、シールリング９の弾性（径方向に伸びようとする力）にて本体吐出筒部５ｅと流入筒部２３との連結が強固になる。更に、連結時にシールリング９にて該個所のシールがなされる。
【００６４】
（６）流入筒部２３（流入口１４）の位置は、その本体部２１側端部（出口）が、前記内側吐出筒部２４の外周面と対向するように設定されている。よって、流入筒部２３から流入されるウォッシャ液が内側吐出筒部２４の周囲に回り込み易くなり、弁体１３（弁本体部１３ｃ）の周囲に、より一様な圧力が加わることとなり、良好に弁本体部１３ｃが弁座部２４ａに押圧接触され、良好に吐出口１５，１８が閉塞される。これにより、いずれか一方の吐出口１５，１８からウォッシャ液が流出（吐出）される際に、他方の吐出口１５，１８からウォッシャ液が流出してしまう（漏れてしまう）ことが防止される。
【００６５】
（７）弁座部２４ａは、その断面が半円状に形成され、その成形時に、少なくともその先端部にバリ等が発生しないように金型の型合わせ面が配置されないようにして成形されている。よって、バリ等に阻害されることなく、良好に弁本体部１３ｃが弁座部２４ａに押圧接触され、良好に吐出口１５，１８が閉塞される。これにより、いずれか一方の吐出口１５，１８からウォッシャ液が流出（吐出）される際に、他方の吐出口１５，１８からウォッシャ液が流出してしまう（漏れてしまう）ことが防止される。
【００６６】
上記実施の形態は、以下のように変更して実施してもよい。
・上記実施の形態では、流入口１４は、本体部２１の外周の一部から本体部２１の中心軸Ｓ１直交方向に筒状に突出した流入筒部２３にて構成されるとしたが、第１及び第２分割ハウジングが嵌合固定可能で同一形状であれば、流入口を他の方向（例えば、中心軸Ｓ１方向）に開口したものに変更してもよい。尚、この場合、ポンプ本体２の本体吐出筒部５ｅ，５ｆ（本体吐出口５ｉ，５ｊ）形状を変更することで本体吐出口と流入口を連結したり、他の別部材を用いることで前記本体吐出口５ｉ，５ｊと流入口とを連結するといった必要がある。
【００６７】
このようにしても、第１及び第２分割ハウジングを成形するための金型が１種類となる。これにより、金型を含む製造ライン等のコストが低減され、ひいては製造コストを低減することができる。又、第１及び第２分割ハウジングは同一の金型で成形されるため、その成形時の寸法誤差が統一される（それぞれ別種類の寸法誤差が生じない）。
【００６８】
・上記実施の形態では、弁体１３は、第１及び第２分割ハウジング１１，１２が嵌合固定されたとき、その外周縁部１３ａがその内側（径方向内側）に突出する保持突起２８にて内側（径方向内側）への移動が規制されて保持されるとしたが、他の構成で（他の形状や別部材にて）保持されるようにしてもよい。例えば、挟持部２７と外周縁部１３ａに径方向に係合する係合凸部及び係合凹部を形成することで外周縁部１３ａの内側（径方向内側）への移動を規制して弁体を保持するようにしてもよい。このようにしても、上記実施の形態の効果（１）〜（３）、（５）〜（７）と同様の効果を得ることができる。又、このようにしても、薄肉部１３ｂが挟持されないため、薄肉部１３ｂの損傷を低減することができる。又、対向する前記保持突起２８の間隔（対向間隔）Ｈ２と、弁体１３の薄肉部１３ｂの肉厚の厚さＷ２とを同じ大きさとしても、上記実施の形態の効果（１）〜（３）、（５）〜（７）と同様の効果を得ることができる。
【００６９】
・上記実施の形態では、本体吐出筒部５ｅと流入筒部２３は、嵌着可能とされている。そして、本体吐出筒部５ｅのリング収容凹部５ｈに外嵌されたシールリング９は、リング収容凹部５ｈと流入筒部２３の内周との間で径方向に圧縮されて密着されるとしたが、シールリング９を連結時（嵌着時）に軸方向に圧縮されて密着されるように各形状を変更して実施してもよい。このようにしても、上記実施の形態の効果（１）〜（４）、（６）、（７）と同様の効果を得ることができる。又、このようにしても、連結時にシールリングにて該個所のシールがなされる。又、シールリング９を連結時以外の工程で組み付けられる他のシール部材に変更してもよい。このようにしても、上記実施の形態の効果（１）〜（４）、（６）、（７）と同様の効果を得ることができる。
【００７０】
・上記実施の形態の弁体１３は、第１バルブ室１６と第２バルブ室１９との間に介在され、第１バルブ室１６内と第２バルブ室１９内の圧力差によって吐出口１５，１８（又は流入口１４，１７）の一方を開き、他方を閉じるものであれば、他の構成のもの（例えば、複数の部材よりなるもの）に変更してもよい。このようにしても、上記実施の形態の効果と同様の効果を得ることができる。
【００７１】
・上記実施の形態の外側吐出筒部２５（吐出口１５，１８）を、その出口（先端）が本体部２１の中心軸Ｓ１方向以外の方向を向くように変更してもよい。例えば、外側吐出筒部を、その先端側が流入筒部２３の反対方向に屈曲した形状に変更してもよい。このようにしても、上記実施の形態の効果と同様の効果を得ることができる。
【００７２】
・上記実施の形態では、第１及び第２分割ハウジング１１，１２は同一形状であるとしたが、嵌合固定可能で、該嵌合部が略円環状に形成され嵌合固定されたときに周方向に係合して２つの流入筒部を平行に位置せしめる回り止め凸部及び回り止め凹部が形成されていれば、それぞれ異なる形状のものとしてもよい。例えば、第１分割ハウジングを、前記第１分割ハウジング１１の直線Ｌ１を中心線として、その一方側（図４（ｂ）中、左側）を対称に形成したものとし、第２分割ハウジングを、前記第１分割ハウジング１１の前記直線Ｌ１を中心線として、その他方側（図４（ｂ）中、右側）を対称に形成したものとしてもよい。このようにしても、第１及び第２分割ハウジングが嵌合されたときに、流入筒部が嵌合方向を軸とした周方向にズレることがなく平行となるように配置される。よって、流入筒部を本体吐出筒部５ｅ，５ｆに同時に嵌合連結できるので良好に連結固定することができる。
【００７３】
・上記実施の形態では、車両のウォッシャ用のポンプ装置１に具体化したが、ポンプ装置１を他の装置に用いて実施してもよい。
上記実施形態から把握できる技術的思想について、以下にその効果とともに記載する。
【００７４】
（イ）請求項２に記載のバルブ装置において、前記嵌合部を略円環状に形成し、該嵌合部が互いに嵌合固定されたとき、周方向に係合することで２つの前記流入筒部を平行に位置せしめる回り止め凸部及び回り止め凹部を前記嵌合部に形成したことを特徴とするバルブ装置。このようにすると、嵌合固定されたとき、回り止め凸部及び回り止め凹部が周方向に係合することで２つの流入筒部が平行とされる。
【００７５】
（ロ）請求項１乃至４及び上記（イ）のいずれかに記載のバルブ装置において、前記第１及び第２分割ハウジングのそれぞれに形成された前記吐出口は、前記第１及び第２分割ハウジングの嵌合固定状態において同一直線上に形成されると共に、前記第１及び第２バルブ室の前記直線方向内方に筒状に突出した内側吐出筒部及び前記直線方向外方に筒状に突出した外側吐出筒部を有し、前記第１及び第２分割ハウジングの前記流入口を、前記直線方向の直交方向に筒状に突出し、その出口が前記内側吐出筒部の外周面に対向した流入筒部に形成したことを特徴とするバルブ装置。このようにすると、流入筒部から流入される液体が内側吐出筒部の周囲に回り込み易くなり、弁体に、より一様な圧力が加わることとなり、良好に吐出口が閉塞される。
【００７６】
（ハ）請求項６に記載のポンプ装置において、前記嵌合部を略円環状に形成し、該嵌合部が互いに嵌合固定されたとき、周方向に係合することで２つの前記流入筒部を平行に位置せしめる回り止め凸部及び回り止め凹部を前記嵌合部に形成したことを特徴とするポンプ装置。このようにすると、嵌合固定されたとき、回り止め凸部及び回り止め凹部が互いに周方向に係合することで２つの流入筒部が平行とされる。
【００７７】
（ニ）請求項９に記載のポンプ装置において、前記シール部材を、嵌着された際に前記本体吐出口と前記流入口との間で径方向に圧縮されて密着するようにしたことを特徴とするポンプ装置。このようにすると、シール部材が、嵌着された際に本体吐出口と流入口との間で径方向に圧縮されて密着するため、請求項９に記載の発明の効果に加え、シール部材の弾性（伸びようとする力）にて本体吐出口と流入口との連結が強固になる。
【００７８】
（ホ）請求項５乃至９及び上記（ハ）、（ニ）のいずれかに記載のポンプ装置において、前記第１及び第２分割ハウジングのそれぞれに形成された前記吐出口は、前記第１及び第２分割ハウジングの嵌合固定状態において同一直線上に形成されると共に、前記第１及び第２バルブ室の前記直線方向内方に筒状に突出した内側吐出筒部及び前記直線方向外方に筒状に突出した外側吐出筒部を有し、前記第１及び第２分割ハウジングの前記流入口を、前記直線方向の直交方向に筒状に突出し、その出口が前記内側吐出筒部の外周面に対向した流入筒部に形成したことを特徴とするポンプ装置。このようにすると、流入筒部から流入される液体が内側吐出筒部の周囲に回り込み易くなり、弁体に、より一様な圧力が加わることとなり、良好に吐出口が閉塞される。
【００７９】
【発明の効果】
以上詳述したように、請求項１〜４、１０，１１に記載の発明によれば、低コストで製造することができるバルブ装置を提供することができる。
又、請求項５〜９に記載の発明によれば、低コストで製造することができるポンプ装置を提供することができる。
【図面の簡単な説明】
【図１】本実施の形態のポンプ装置の概略説明図。
【図２】本実施の形態のポンプ装置の概略説明図。
【図３】本実施の形態の本体吐出筒部及びバルブ装置の断面図。
【図４】（ａ）（ｂ）本実施の形態の第１及び第２分割ハウジングを説明するための説明図。
【図５】本実施の形態の第１及び第２分割ハウジングの断面図。
【図６】（ａ）本実施の形態の第１及び第２分割ハウジングの断面図。（ｂ）本実施の形態の弁体の断面図。
【符号の説明】
２…ポンプ本体、３…バルブ装置、４…モータ、９…シールリング（シール部材）、１１…第１分割ハウジング、１２…第２分割ハウジング、１３…弁体、１４…流入口、１５…吐出口、１６…第１バルブ室、１７…流入口、１８…吐出口、１９…第２バルブ室、２３…流入筒部、２４…内側吐出筒部、２５…外側吐出筒部、２６…嵌合部、２７…挟持部、２８…保持突起、Ｈ２…間隔、Ｗ２…厚さ、５ｉ，５ｊ…本体吐出口、１３ａ…外周縁部、１３ｂ…薄肉部、１３ｃ…弁本体部、２６ｅ，２６ｆ…回り止め凹部、２６ｇ，２６ｈ…回り止め凸部、Ｌ１…直線。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pump device provided with a valve device, and is suitable for, for example, a pump device for a washer that discharges washer fluid alternatively to a vehicle front window and a vehicle rear window.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, some vehicles include a pump device that discharges washer fluid in a washer tank alternatively to a vehicle front window and a vehicle rear window. As such a pump device, an impeller is provided on a rotating shaft of a motor that can rotate forward and backward, and alternatively by forward and reverse rotation, that is, from one discharge port during forward rotation and from the other during reverse rotation. Some have liquid discharged from the outlet.
[0003]
In such a pump device, when the impeller (in the case of a centrifugal pump) is rotated forward, the pressure in the first valve chamber on one discharge port side becomes a large positive pressure, and the pressure in the second valve chamber on the other discharge port side is increased. The pressure becomes a small positive pressure. When the impeller is rotated in the reverse direction, the pressure in the second valve chamber on the other discharge port side becomes a large positive pressure, and the pressure in the first valve chamber on one discharge port side becomes a small positive pressure. In order to prevent liquid from being discharged from the small positive pressure side discharge port, the discharge is caused by a pressure difference between the first valve chamber and the second valve chamber between the first valve chamber and the second valve chamber. A valve body that opens and closes a passage corresponding to an outlet is provided so that liquid is discharged only from a discharge port corresponding to a large positive pressure side valve chamber. In such a pump device, liquid can be discharged alternatively from two discharge ports with one motor.
[0004]
[Problems to be solved by the invention]
By the way, the pump device is configured such that a valve device including the first and second valve chambers, the valve body, and the like is attached to two main body discharge ports of a pump main body including the motor and the impeller. The The valve device includes a first divided housing that forms the first valve chamber having an inlet and a discharge port, and a second divided housing that forms the second valve chamber having an inlet and a discharge port. And the valve body. The two inlets of the first and second divided housings are connected (communicated) to the main body discharge port, respectively.
[0005]
However, in the above valve device, the connecting portion between the first divided housing and the second divided housing, which are connected so that the valve body is interposed between the first valve chamber and the second valve chamber, is, for example, a stamped joint. The large tube portion that can be used and the small tube portion that is fitted into the large tube portion. Thereby, the first divided housing and the second divided housing have different shapes. Therefore, two types of molds for molding them are required, or different mold shapes are required even for the same mold. And since the 1st and 2nd division | segmentation housing is shape | molded by a different metal mold | die (mold shape), the dimension error of each (for every metal mold | die) may arise at the time of the shaping | molding. Therefore, there is a possibility that the liquid flow greatly differs between one and the other because the sizes of the first valve chamber and the second valve chamber deviate from the design values. Moreover, there is a possibility that good stamped joints cannot be obtained because the diameters of the large tube portion and the small tube portion deviate from the design values. In addition, the position of each inlet is shifted from the design position, so that the inflow cylinders constituting the inlet do not become parallel, and the two inlets cannot be connected to the two main body outlets at the same time. There is a possibility that it cannot be connected to. These cause a reduction in the yield of the valve device. Therefore, there is a problem that the manufacturing cost of the valve device increases.
[0006]
The present invention has been made to solve the above-described problems, and an object thereof is to provide a valve device and a pump device that can be manufactured at low cost.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is a first divided housing for forming a first valve chamber having an inlet and an outlet, and a second valve fixed to the first divided housing and having an inlet and an outlet. A second divided housing for forming a chamber, and the first or second valve chamber interposed between the first valve chamber and the second valve chamber, and the inlet or the discharge port depending on a pressure difference between the first valve chamber and the second valve chamber. In the valve device comprising a valve body for opening and closing the first and second divided housings Consists of split housings of the same shape, Each fitting part With , The fitting part Is , That For straight lines that divide One side is With one side fitting part And the other side With other side mating part And said First One side fitting part of split housing and Second split housing When the other side fitted portion is fitted and the other side fitted portion of the first divided housing and the one side fitted portion of the second divided housing are fitted, the first divided housing and With a second split housing Fitting fixed Be done .
[0008]
According to a second aspect of the present invention, in the valve device according to the first aspect, the both inflow ports of the first and second divided housings are respectively protruded from the peripheral surfaces of the first and second divided housings. The fitting portions of the first and second divided housings are formed so that both the inflow tube portions are arranged in parallel when fitted and fixed to each other.
[0009]
The invention according to claim 3 is the valve device according to claim 1 or 2, wherein the valve body is formed of an elastic material, and the first and second divided housings are fitted and fixed to each other. And a clamping part for clamping the outer peripheral edge of the valve body inside.
[0010]
According to a fourth aspect of the present invention, in the valve device according to the third aspect, the valve body includes an annular thin wall portion inside the outer peripheral edge portion, and the inflow port or the further inside the thin wall portion. A valve main body for closing the discharge port is formed continuously and integrally, and when the first and second divided housings are fitted and fixed to each other, the inner side of the outer peripheral edge Protrusions are formed on the first and second divided housings to hold the valve body by restricting the movement of the outer peripheral edge to the inside, and the amount of protrusion of the holding protrusions is such that the thin portion is The interval between the derived holding projections is set to be larger than the thickness of the thin portion.
[0011]
According to a fifth aspect of the present invention, there is provided a first divided housing for forming a first valve chamber having an inlet and an outlet, and a second valve chamber fixed to the first divided housing and having an inlet and an outlet. A second divided housing for forming, and the inlet or the outlet is opened and closed by a pressure difference between the first valve chamber and the second valve chamber interposed between the first valve chamber and the second valve chamber One of the main body outlets connected to the two inlets has a higher positive pressure than the other by the valve device having the valve body and the motor rotating forward or reverse. A pump apparatus comprising: a pump body for supplying a liquid, wherein the first and second divided housings Consists of split housings of the same shape, Each fitting part With , The fitting part Is , That For straight lines that divide One side is With one side fitting part And the other side With other side mating part And said First One side fitting part of split housing and Second split housing When the other side fitted portion is fitted and the other side fitted portion of the first divided housing and the one side fitted portion of the second divided housing are fitted, the first divided housing and With a second split housing Fitting fixed Be done .
[0012]
According to a sixth aspect of the present invention, in the pump device according to the fifth aspect, the two main body discharge ports are arranged in parallel at a predetermined interval, and the first and second divided housings are provided. Are formed in cylindrical inflow tube portions projecting from the peripheral surfaces of the first and second split housings (11, 12), respectively, and the fitting portions of the first and second split housings Is formed so that both the inflow cylinder portions are arranged in parallel when fitted and fixed to each other.
[0013]
The invention according to claim 7 is the pump device according to claim 5 or 6, wherein the valve body is formed of an elastic material, and the first and second divided housings are fitted and fixed to each other. And a clamping part for clamping the outer peripheral edge of the valve body inside.
[0014]
The invention according to claim 8 is the pump device according to claim 7, wherein the valve body includes an annular thin wall portion inside the outer peripheral edge portion, and the inflow port or the further inside the thin wall portion. A valve main body for closing the discharge port is formed continuously and integrally, and when the first and second divided housings are fitted and fixed to each other, the inner side of the outer peripheral edge Protrusions are formed on the first and second divided housings to hold the valve body by restricting the movement of the outer peripheral edge to the inside, and the amount of protrusion of the holding protrusions is such that the thin portion is The interval between the derived holding projections is set to be larger than the thickness of the thin portion.
[0015]
According to a ninth aspect of the present invention, in the pump device according to any one of the fifth to eighth aspects, the main body discharge port and the inflow port can be fitted, and one of them is made of an elastic material. A seal member is provided that comes into close contact with the other when fitted.
[0016]
According to a tenth aspect of the present invention, there is provided a first divided housing for forming a first valve chamber having an inlet and a discharge port formed in an inflow cylinder portion protruding in a cylindrical shape, and the first divided housing. A second divided housing for forming a second valve chamber having an inlet and an outlet formed in an inflow cylinder that is fitted and fixed from an orthogonal direction of the inflow cylinder and protrudes in a cylindrical shape; A first valve chamber and the second valve chamber, which are opened and closed by a pressure difference between the first valve chamber and the second valve chamber to open and close the inlet and the outlet on the first divided housing side. And a valve body that selectively communicates the inflow port on the second divided housing side with the discharge port, wherein the first and second divided housings are: It is composed of split housings of the same shape, each of the split housings of the same shape A substantially annular fitting part Preparation , The fitting part The one side is a one-side fitting portion and the other side is the other-side fitted portion with respect to a straight line that divides it evenly, and the one-side fitting portion and the second divided housing of the first divided housing When the other side fitted portion is fitted and the other side fitted portion of the first divided housing and the one side fitted portion of the second divided housing are fitted, the first divided housing and The second divided housing is fitted and fixed, and the fitting portion includes fitting portions of the first and second divided housings. Anti-rotation convex part and anti-rotation concave part for positioning the two inflow cylinder parts in parallel by engaging in the circumferential direction when the two are fitted and fixed But Formation The one-side fitting portion is configured to include the rotation-preventing concave portion, and the other-side mated portion is configured to include the rotation-preventing convex portion. .
[0017]
According to an eleventh aspect of the present invention, in the valve device according to the tenth aspect, the discharge port formed in each of the first and second divided housings is fitted and fixed to the first and second divided housings. An inner discharge cylinder portion that is formed on the same straight line in the state and protrudes in a cylindrical shape inward in the linear direction of the first and second valve chambers, and an outer discharge cylinder that protrudes in a cylindrical shape outward in the linear direction The inflow cylinder part of the first and second divided housings is provided with an outlet facing the outer peripheral surface of the inner discharge cylinder part.
[0018]
(Function)
According to the first aspect of the present invention, the first and second divided housings are each formed with a fitting portion, and the fitting portion is symmetrical with respect to a straight line that equally divides the fitting portion. Since the first and second divided housings can be fitted and fixed by forming one side fitting portion and the other side fitting portion that are formed in positions and can be fitted to each other, the shape of both parts is the same. Can be shaped. Therefore, there is one type of mold for molding the first and second divided housings. In addition, since the housing of the valve device is constituted by first and second divided housings formed by the same mold, that is, the same parts are fitted and fixed, the types of parts can be reduced, and each of the divided housings can be reduced. Dimensional error during molding is unified.
[0019]
According to the second aspect of the present invention, the inlets of the first and second divided housings are formed in the cylindrical inflow cylinders protruding from the peripheral surfaces of the first and second divided housings, respectively. The fitting portion of the second divided housing is formed such that both inflow tube portions are arranged in parallel when fitted and fixed to each other. Therefore, when fitted and fixed, the two inflow cylinders are not shifted and non-parallel, and are parallel, for example, can be fitted and connected simultaneously to the externally arranged cylinders, etc. can do.
[0020]
According to invention of Claim 3, a valve body is formed with an elastic material. When the first and second divided housings are fitted and fixed to each other, the outer peripheral edge portion of the valve body is sandwiched between the holding portions that the first and second divided housings have inside the fitting portions. . Therefore, the first and second valve chambers are partitioned by the valve body, and the fitting portion is sealed.
[0021]
According to invention of Claim 4, the said valve body is for sealing the said inflow port or the said discharge port inside the said thin-walled part at the inner side of the said outer peripheral edge part, and the thin-walled part further inside the said thin-walled part. It is assumed that the valve main body is continuously formed integrally. When the first and second divided housings are fitted and fixed to each other, the outer peripheral edge of the valve body moves inward by the holding protrusions of the first and second divided housings that protrude inside the outer peripheral edge. Is regulated and retained. In addition, the protruding amount of the holding projection is set so that the interval between the holding projections from which the thin portion is led out is larger than the thickness of the thin portion, so that the thin portion is not sandwiched. Therefore, it is possible to reduce damage to the thin wall portion that repeatedly bends while reliably holding the valve body.
[0022]
According to the fifth aspect of the present invention, the first and second divided housings are each formed with a fitting portion, and the fitting portion is symmetrical with respect to a straight line that equally divides the fitting portion. Since the first and second divided housings can be fitted and fixed by forming one side fitting portion and the other side fitting portion that are formed in positions and can be fitted to each other, the shape of both parts is the same. Can be shaped. Therefore, there is one type of mold for molding the first and second divided housings. In addition, since the housing of the valve device is constituted by first and second divided housings formed by the same mold, that is, the same parts are fitted and fixed, the types of parts can be reduced, and each of the divided housings can be reduced. Dimensional error during molding is unified.
[0023]
According to the invention described in claim 6, the inflow ports of the first and second divided housings are formed in the cylindrical inflow tube portions protruding from the peripheral surfaces of the first and second divided housings, respectively. The fitting portion of the second divided housing is formed such that both inflow tube portions are arranged in parallel when fitted and fixed to each other. Therefore, when fitted and fixed, the two inflow cylinders do not shift and become non-parallel, and are parallel, for example, can be connected to the main body discharge port arranged in parallel at the same time and can be connected well. Can do.
[0024]
According to invention of Claim 7, a valve body is formed with an elastic material. When the first and second divided housings are fitted and fixed to each other, the outer peripheral edge portion of the valve body is sandwiched between the holding portions that the first and second divided housings have inside the fitting portions. . Therefore, the first and second valve chambers are partitioned by the valve body, and the fitting portion is sealed.
[0025]
According to invention of Claim 8, the said valve body is for sealing the said inflow port or the said discharge port in the inner side of the said outer peripheral edge part, and the thin-walled thin part further inside the said thin-walled part. It is assumed that the valve main body is continuously formed integrally. When the first and second divided housings are fitted and fixed to each other, the outer peripheral edge of the valve body moves inward by the holding protrusions of the first and second divided housings that protrude inside the outer peripheral edge. Is regulated and retained. In addition, the protruding amount of the holding projection is set so that the interval between the holding projections from which the thin portion is led out is larger than the thickness of the thin portion, so that the thin portion is not sandwiched. Therefore, it is possible to reduce damage to the thin wall portion that repeatedly bends while reliably holding the valve body.
[0026]
According to the ninth aspect of the present invention, the main body discharge port and the inflow port can be fitted, and either one of them is made of an elastic material and is provided with a seal member that comes into close contact with the other when fitted. . Therefore, the main body discharge port and the inflow port can be easily connected. In addition, the portion is sealed with a seal member at the time of connection.
[0027]
According to the invention of claim 10, The first and second divided housings are each formed with a substantially annular fitting portion, and the fitting portions are formed at symmetrical positions with respect to a straight line that equally divides the fitting portion. By comprising the one side fitting part and the other side fitting part which can be fitted, both parts shape can be made into the same shape, although the 1st and 2nd division | segmentation housing can be fitted and fixed. Therefore, there is one type of mold for molding the first and second divided housings. In addition, since the housing of the valve device is constituted by first and second divided housings formed by the same mold, that is, the same parts are fitted and fixed, the types of parts can be reduced, and each of the divided housings can be reduced. Dimensional error during molding is unified. Also, When the substantially annular fitting portions of the first and second divided housings are fitted and fixed to each other, the non-rotating convex portion and the non-rotating concave portion formed in the substantially annular fitting portion are engaged in the circumferential direction. By doing so, two inflow cylinder parts are made parallel. Therefore, when fitted and fixed, the two inflow cylinders do not shift and become non-parallel, for example, can be fitted and connected at the same time to the externally arranged cylinders, etc. it can.
[0028]
According to the eleventh aspect of the present invention, since the outlet of the inflow cylinder is provided so as to face the outer peripheral surface of the inner discharge cylinder, the liquid flowing in from the inflow cylinder is inside the discharge cylinder. It becomes easy to go around the periphery of the valve body, more uniform pressure is applied to the valve body, and the discharge port is well closed.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is embodied in a pump device for a vehicle washer will be described with reference to FIGS. As shown in FIG. 1, the pump device 1 includes a pump body 2 and a valve device 3.
[0030]
As shown in FIG. 1, the pump main body 2 includes a motor 4, a housing 5, an impeller 6, a pump chamber cover 7, and the like. The motor 4 can rotate the rotating shaft 8 forward and backward according to a power supply voltage supplied from the outside. The housing 5 is formed in a substantially bottomed cylindrical shape, and includes a motor accommodating portion 5a that substantially accommodates the motor 4, and a pair of flow paths 5b and 5c (see FIG. 2) that extend in parallel along the motor accommodating portion 5a. Is formed. A through hole 5d penetrating to the outside is formed in the bottom portion (left end portion in FIG. 1) of the motor housing portion 5a. The motor 4 is housed in the motor housing 5a so that the tip of the rotating shaft 8 is sealed and penetrates the through hole 5d and protrudes to the outside. An impeller 6 (see FIG. 2) is fixed to the tip of the rotating shaft 8.
[0031]
One end portions of the flow paths 5b and 5c (the end portion on the front end side of the rotating shaft 8 and the left end portion in FIG. 1) are opened to the outside as they are. The other end portions (the right end portion in FIG. 1) of the flow paths 5b and 5c are bent outward (in the radial direction of the housing 5) and protruded from the housing 5 into a cylindrical shape. (See FIG. 3). As shown in FIG. 3, the two main body discharge cylinder portions 5e and 5f are juxtaposed with a predetermined interval and project in parallel. An annular fitting convex part 5g and a ring accommodating concave part 5h are formed on the outer periphery of each main body discharge cylinder part 5e, 5f. The ring accommodating concave part 5h is made of an elastic material (a rubber material in the present embodiment). A seal ring 9 as a sealing member is externally fitted. The seal ring 9 is set so that its outer peripheral side protrudes from the outer periphery of the main body discharge cylinders 5e and 5f in a state of being fitted into the ring housing recess 5h. In the present embodiment, the main body discharge cylinder portions 5e and 5f constitute the main body discharge ports 5i and 5j.
[0032]
A pump chamber cover 7 is fixed to one end portion of the housing 5 (the end portion on the front end side of the rotating shaft 8 and the left end portion in FIG. 1). As shown in FIGS. 1 and 2, the pump chamber cover 7 has an impeller receiving recess 7a that is recessed corresponding to the impeller 6 so as not to prevent the impeller 6 from rotating, and a predetermined number of the impeller receiving recess 7a. First and second communicating recesses 7b and 7c are formed so as to be connected to one end portions of the flow paths 5b and 5c from the angular position. As shown in FIG. 2, the first communication recess 7b is formed so as to curve in the counterclockwise direction toward the radially outer side when viewed from one end side (left side in FIG. 1). The concave portion 7c is formed to be curved so as to go in the clockwise direction toward the radially outer side when viewed from one end side (left side in FIG. 1). Further, as shown in FIG. 1, an intake hole 7d penetrating to the outside is formed in the center of the bottom of the impeller accommodating recess 7a of the pump chamber cover 7. In the present embodiment, the pump chamber 10 is formed by the impeller accommodating recess 7 a and one end surface of the housing 5.
[0033]
As shown in FIG. 3, the valve device 3 includes first and second divided housings 11 and 12 that constitute a valve housing, and a valve body 13.
The first divided housing 11 is for forming a first valve chamber 16 having an inlet 14 and a discharge port 15, and the second divided housing 12 is a second valve having an inlet 17 and a discharge port 18. This is for forming the chamber 19. The valve body 13 is interposed between the first valve chamber 16 and the second valve chamber 19, and the discharge ports 15, 18 are caused by a pressure difference between the first valve chamber 16 and the second valve chamber 19. For opening one and closing the other. The first and second divided housings 11 and 12 are formed in the same shape, that is, the same component, while being able to be fitted and fixed to each other.
[0034]
Specifically, as shown in FIGS. 4 and 5, the first divided housing 11 includes a main body portion 21, an outer extension portion 22, an inflow cylinder portion 23, an inner discharge cylinder portion 24, and an outer discharge cylinder portion 25. Is provided. The main body portion 21 is formed in a substantially bottomed cylindrical shape. The outer extension 22 extends radially outward from the opening of the main body 21. The inflow cylinder part 23 is formed so as to protrude in a cylindrical shape from a part of the outer periphery (circumferential surface) of the main body part 21 in a direction orthogonal to the central axis S1 of the main body part 21 (upward in FIGS. 4B and 5). The outer side and the inner side of the main body 21 are communicated with each other. The inner discharge cylinder 24 protrudes in a cylindrical shape from the center of the bottom of the main body 21 toward the inner side in the direction of the central axis S1 of the main body 21 (the opening direction of the main body 21), that is, in the first valve chamber 16 inside. Protrusively formed. The outer discharge cylinder part 25 protrudes in a cylindrical shape from the center of the bottom part of the main body part 21 toward the outer side in the direction of the central axis S1 of the main body part 21 (the reverse direction of the inner discharge cylinder part 24). It is formed to protrude in a shape. The inner and outer discharge cylinder portions 24 and 25 are communicated on the same straight line (the central axis S1), and are formed to communicate the inner side and the outer side of the main body portion 21. In the present embodiment, the inflow tube portion 23 constitutes the inflow port 14, and the inner and outer discharge tube portions 24, 25 constitute the discharge port 15.
[0035]
A fitting part 26 is formed in the outer extension part 22. The fitting part 26 is formed in a substantially annular shape along the outer edge of the outer extension part 22. Specifically, the fitting part 26 includes a substantially arc-shaped outer arc part 26 a and an inner arc part 26 b erected along the outer edge of the outer extension part 22. As shown in FIG. 4B, the outer arc portion 26 a and the inner arc portion 26 b are straight lines that equally divide the fitting portion 26 when viewed from the axial direction of the main body portion 21. They are formed at symmetrical positions with respect to a straight line L1 passing through the center S1 and the axial center of the inflow cylinder portion 23 (so that one is the outer arc portion 26a and the other is the inner arc portion 26b). In the outer arc portion 26a, two connecting slits 26c penetrating inward and outward in the radial direction are formed in the circumferential direction. The outer peripheral surface (outer surface) of the inner arc portion 26b is a distance from the inner peripheral surface (inner surface) of the outer arc portion 26a and the axis center S1 of the main body portion 21 as shown in FIG. (Radius) is set to be equal. A connecting claw 26d that fits into the connecting slit 26c when the outer peripheral surface is combined with the inner peripheral surface of the outer arc portion 26a is formed on the outer peripheral surface of the inner arc portion 26b.
[0036]
Further, the fitting portion 26 includes anti-rotation recesses 26e and 26f and anti-rotation projections 26g and 26h. As shown in FIG. 4B, the rotation stopper recesses 26e and 26f and the rotation prevention protrusions 26g and 26h are formed with respect to the straight line L1 (on one side, the rotation prevention recesses 26e, 26f, and the anti-rotation projections 26g and 26h on the other side) are formed at symmetrical positions. In the present embodiment, one of the outer arc portions 26a and the rotation stopper recesses 26e and 26f (to the left in FIG. 4B) with respect to the straight line L1 constitutes one side fitting portion. The inner arc portion 26b and the rotation preventing convex portions 26g and 26h on the other side (right side in FIG. 4B) with respect to the straight line L1 constitute the other side fitted portion.
[0037]
One anti-rotation concave part 26e and anti-rotation convex part 26g are formed adjacent to each other on the opposite side (point symmetrical position) of the inflow cylinder part 23 in the circumferential direction of the fitting part 26. The anti-rotation convex portion 26g is formed so as to continue from the side of the inner circular arc portion 26b opposite to the inflow cylinder portion 23 and extend radially outward. The anti-rotation recess 26e is a gap formed by the end of the outer arc portion 26a on the side opposite to the inflow cylinder 23 and the anti-rotation projection 26g.
[0038]
The other anti-rotation recess 26f and the anti-rotation projection 26h are formed apart from each other on the inflow cylinder 23 side. The anti-rotation convex portion 26h is formed so as to continue from the inflow cylindrical portion 23 side of the inner circular arc portion 26b and extend radially outward. The anti-rotation recess 26f is a gap formed by the end of the outer arc portion 26a on the inflow cylinder portion 23 side and the intermediate arc portion 26i. Here, the intermediate arc portion 26i constitutes a part of the fitting portion 26, and the protruding amount T1 of the inner arc portion 26b along the outer edge of the outer extension portion 22 (see FIG. 4A). Is formed up to a symmetrical position with respect to the straight line L1 continuously in the circumferential direction from the anti-rotation convex portion 26h.
[0039]
Further, as shown in FIG. 4 (b), a pinching portion 27, which is an annular plane when viewed from the axial direction of the main body portion 21, is formed inside the fitting portion 26 in the outer extension portion 22. Yes. Further, as shown in FIGS. 4B and 5, an annular holding projection 28 is erected on the inner side of the pinching portion 27 in the outer extension portion 22 and on the inner edge of the outer extension portion 22. Yes.
[0040]
As shown in FIG. 3, the inflow cylinder part 23 is formed so that its inner periphery corresponds to the outer periphery of the main body discharge cylinder part 5e so that it can be fitted to the main body discharge cylinder part 5e. An annular fitting concave portion 23a that can be fitted with the fitting convex portion 5g of the main body discharge cylinder portion 5e is formed on the periphery. Further, the position of the inflow cylinder part 23 (inlet 14) is set so that the end part (outlet) on the main body part 21 side faces the outer peripheral surface of the inner discharge cylinder part 24.
[0041]
A valve seat portion 24 a having an inner edge extending in the direction of the central axis S <b> 1 of the main body portion 21 is formed at the distal end portion (the opening side end portion of the main body portion 21) of the inner discharge cylinder portion 24. The valve seat portion 24a has a semicircular cross section, and is molded so that the mold mating surface is not disposed so that at the time of molding, no burr or the like is generated at the tip. Yes.
[0042]
An engagement protrusion 25a is formed at the distal end of the outer discharge cylinder portion 25 so that it can be easily connected to an external hose or the like.
In the present embodiment, since the second divided housing 12 has the same shape (same part shape) as the first divided housing 11, the same reference numerals are given to the same parts, and the detailed description thereof will be given. Omitted.
[0043]
In the first and second divided housings 11 and 12, the inner circumferential surface of the outer arc portion 26a is aligned with the outer circumferential surface of the inner arc portion 26b, the coupling claw 26d is fitted in the coupling slit 26c, and the rotation preventing recess 26e. , 26f can be fitted and fixed to each other by fitting the rotation preventing projections 26g, 26h.
[0044]
As shown in FIG. 6B, the valve body 13 is made of an elastic material (a rubber material in the present embodiment) and has a substantially disk shape. The valve body 13 includes a thick outer peripheral edge portion 13a, an annular thin wall portion 13b formed on the inner side (radially inner side) of the outer peripheral edge portion 13a, an inner side (radial inner side) of the thin wall portion 13b, That is, it is formed in the center, and is integrally formed with a disc-shaped valve body portion 13c for closing the valve seat portion 24a (discharge port 15).
[0045]
Here, as shown in FIGS. 6A and 6B, when the first and second divided housings 11 and 12 are fitted and fixed as described above, an interval H1 between the opposing clamping portions 27, and The relationship between the outer peripheral edge 13a of the valve body 13 and the thickness W1 is set so that the interval H1 is smaller than the thickness W1 (H1 <W1).
[0046]
Further, when the first and second divided housings 11 and 12 are fitted and fixed as described above, the interval between the holding projections 28 facing each other (the interval between the holding projections 28 from which the thin portion 13b is led out) H2, The relationship with the thickness W2 of the thin portion 13b of the valve body 13 is set so that the interval H2 is larger than the thickness W2 (H2> W2).
[0047]
Then, as shown in FIG. 3, the first and second divided housings 11 and 12 and the valve body 13 are assembled by fitting and fixing a fitting portion 26 so that the valve body 13 is interposed therebetween. It has been. At this time, the outer peripheral edge portion 13 a of the valve body 13 is held between the holding portions 27. Further, at this time, the valve body 13 is held while the outer peripheral edge portion 13a is restricted from moving inward (inward in the radial direction) by the holding protrusion 28 protruding inward (inward in the radial direction). At this time, the interior of each main body 21 of the first and second divided housings 11 and 12 is partitioned by the valve body 13 to form the first valve chamber 16 and the second valve chamber 19. .
[0048]
At this time, in the fitting portion 26, the outer arc portion 26 a and the inner arc portion 26 b, the anti-rotation recess portions 26 e and 26 f, and the anti-rotation projection portions 26 g and 26 h are connected to the shaft center S 1 of the main body portion 21 and the inflow cylinder portion 23. Since the first and second divided housings 11 and 12 are fitted and fixed to each other, the two inflow cylinder portions 23 are parallel to each other because they are formed at symmetrical positions with respect to the straight line L1 passing through the axial center. Are arranged as follows. Specifically, at this time, the anti-rotation convex portions 26g and 26h are fitted into the anti-rotation concave portions 26e and 26f arranged as described above, and are engaged with each other in the circumferential direction, so that the inflow cylinder portion 23 is displaced in the circumferential direction. They are arranged so that they are parallel to each other. At this time, as shown in FIG. 3, the two inflow cylinders 23 are set to have a predetermined interval similar to that of the two main body discharge cylinders 5e and 5f.
[0049]
In the valve device 3 assembled as described above, each inflow cylinder portion 23 is fitted into each main body discharge cylinder portion 5e, 5f, and more specifically, the main body discharge cylinder portions 5e, 5f in the inflow cylinder portion 23. Is fitted, and the fitting recess 23a and the fitting projection 5g are fitted, so that the pump body 2 is fixed. At this time, the inflow cylinder portion 23 and the main body discharge cylinder portions 5e and 5f are made of a resin material and are slightly bent so that the insertion is possible. At this time, the seal ring 9 is compressed and brought into close contact with the ring accommodating recess 5 h and the inner periphery of the inflow cylinder portion 23 in the radial direction.
[0050]
The pump device 1 configured as described above is disposed in the vehicle such that the intake hole 7d of the pump body 2 communicates with a vehicle washer tank (not shown). Further, the outer discharge cylinder portion 25 (discharge port 15) of the first divided housing 11 of the valve device 3 is communicated with a front washer nozzle of a vehicle front window via a hose (not shown). Further, the outer discharge cylinder portion 25 (discharge port 18) of the second divided housing 12 is communicated with a rear washer nozzle of the vehicle rear window via a hose or the like (not shown).
[0051]
In the pump device 1 configured as described above, when the motor 4 is driven and the rotating shaft 8 and the impeller 6 are rotated forward (in the present embodiment, counterclockwise in FIG. 2), the washer fluid is removed. The washer liquid is sucked from the insertion hole 7d, and is supplied to the first communication recess 7b side (one main body discharge cylinder part 5e side) with a large positive pressure. At this time, a small positive pressure is also applied to the second communication recess 7c side (the other main body discharge cylinder portion 5f side).
[0052]
Then, the pressure in the first valve chamber 16 on the first divided housing 11 side that communicates with the first communication recess 7b becomes a large positive pressure, and the second valve chamber on the second split housing 12 side that communicates with the second communication recess 7c. The pressure in 19 becomes a small positive pressure.
[0053]
Then, due to the pressure difference between the first valve chamber 16 and the second valve chamber 19, the valve body 13c of the valve body 13 is moved to the valve seat portion 24a on the second valve chamber 19 side (second divided housing 12 side). The discharge port 18 is closed by being pressed and contacted (the inflow port 17 and the discharge port 18 are not communicated).
[0054]
Therefore, the inflow port 14 and the discharge port 15 communicate with each other, and the washer liquid flows out (discharges) only from the discharge port 15 on the first valve chamber 16 side (first divided housing 11 side). As a result, the washer liquid is sprayed from the front washer nozzle to the vehicle front window.
[0055]
On the other hand, when the motor 4 is driven and the rotating shaft 8 and the impeller 6 are rotated in the reverse direction (in this embodiment, clockwise in FIG. 2), the washer liquid is sucked from the intake hole 7d, and the washer liquid is A large positive pressure is supplied to the second communication recess 7c side (the other main body discharge cylinder portion 5f side). At this time, a small positive pressure is also applied to the first communication recess 7b side (one main body discharge cylinder portion 5e side).
[0056]
Then, the pressure in the second valve chamber 19 on the second divided housing 12 side communicating with the second communication recess 7c becomes a large positive pressure, and the first valve chamber on the first split housing 11 side communicating with the first communication recess 7b. The pressure in 16 becomes a small positive pressure.
[0057]
Then, due to the pressure difference between the first valve chamber 16 and the second valve chamber 19, the valve body portion 13c of the valve body 13 is moved to the valve seat portion 24a on the first valve chamber 16 side (first divided housing 11 side). The discharge port 15 is closed by being pressed and contacted (the inlet 14 and the discharge port 15 are not communicated).
[0058]
Therefore, the inflow port 17 and the discharge port 18 communicate with each other, and the washer liquid flows out (discharges) only from the discharge port 18 on the second valve chamber 19 side (second divided housing 12 side). As a result, the washer liquid is sprayed from the rear washer nozzle to the vehicle rear window. That is, by switching the rotation direction of the motor 4, a pressure difference between the first valve chamber 16 and the second valve chamber 19 is generated, and the valve body 13 is caused to flow into the inlet 14, the discharge port 15, and the inlet by the pressure difference. 17 and the discharge port 18 are alternatively communicated. Then, the washer liquid is supplied to the vehicle front window or the vehicle rear window from the communication outlet.
[0059]
Next, characteristic effects of the above embodiment will be described below.
(1) The first and second divided housings 11 and 12 have the same shape while being capable of being fitted and fixed to each other. Therefore, since the types of parts can be reduced, the parts can be easily managed, and the manufacturing cost can be reduced. Moreover, the metal mold | die for shape | molding the 1st and 2nd division | segmentation housings 11 and 12 becomes one type. Thereby, the cost of a production line including a mold is reduced, and as a result, the production cost can be reduced. In addition, since the first and second divided housings 11 and 12 are molded using the same mold, the dimensional errors at the time of molding are unified (no different types of dimensional errors occur). Further, the first and second divided housings having the same shape are fitted and fixed to each other to form a valve housing, that is, the same parts are fitted and fixed to form the valve housing. Even if the size of the valve chamber 19 deviates from the design value, the flow of liquid in both valve chambers is substantially the same, and approximate characteristics can be obtained at both discharge ports. From this, the yield of the valve device 3 can be improved, and as a result, the manufacturing costs of the valve device 3 and the pump device 1 can be reduced.
[0060]
(2) The fitting portion 26 is formed with anti-rotation recesses 26e and 26f and anti-rotation projections 26g and 26h for allowing the two inflow cylinders 23 to be parallel. Then, when fitted and fixed, the anti-rotation concave portions 26e and 26f are fitted with the anti-rotation convex portions 26g and 26h and are engaged with each other in the circumferential direction, so that the inflow cylinder portion 23 is parallel without being displaced in the circumferential direction. Are arranged as follows. Therefore, since the two inflow cylinder parts 23 can be simultaneously fitted and connected to the two main body discharge cylinder parts 5e and 5f, they can be connected and fixed satisfactorily.
[0061]
(3) The valve body 13 is made of an elastic material. When the first and second divided housings 11 and 12 are fitted and fixed, the outer peripheral edge portion 13a is sandwiched between the fitting portions 26. It is held by the part 27. Therefore, the first and second valve chambers 16 and 19 are partitioned by the valve body 13 and the fitting portion 26 is sealed.
[0062]
(4) When the first and second divided housings 11 and 12 are fitted and fixed, the valve body 13 is located on the inner side by a holding projection 28 whose outer peripheral edge portion 13a projects inwardly (inward in the radial direction) ( (Inward radial direction) is restricted and held. Moreover, the protruding amount of the holding projection 28 is such that the interval (opposite interval) H2 between the holding projections 28 facing each other when the first and second divided housings 11 and 12 are fitted and fixed is the thin portion 13b of the valve body 13. Since the thickness is set to be larger than the thickness W2, the thin portion 13b is not sandwiched. Therefore, it is possible to reduce damage to the thin wall portion 13b that repeatedly bends while reliably holding the valve body 13.
[0063]
(5) The main body discharge cylinder 5e and the inflow cylinder 23 can be fitted. The seal ring 9 fitted on the ring housing recess 5h of the main body discharge cylinder 5e is compressed and brought into close contact with the ring housing recess 5h and the inner periphery of the inflow cylinder 23 in the radial direction. Therefore, the main body discharge cylinder part 5e and the inflow cylinder part 23 can be easily connected. In addition, the connection between the main body discharge cylinder 5e and the inflow cylinder 23 is strengthened by the elasticity of the seal ring 9 (force to extend in the radial direction). Further, at the time of connection, the seal ring 9 seals the corresponding portion.
[0064]
(6) The position of the inflow cylinder part 23 (inlet 14) is set so that the end part (outlet) on the main body part 21 side faces the outer peripheral surface of the inner discharge cylinder part 24. Therefore, the washer liquid flowing in from the inflow cylinder portion 23 easily flows around the inner discharge cylinder portion 24, and more uniform pressure is applied to the periphery of the valve body 13 (valve body portion 13c). The valve body 13c is pressed against the valve seat 24a, and the discharge ports 15 and 18 are well closed. Thereby, when the washer liquid flows out (discharges) from one of the discharge ports 15, 18, it is prevented that the washer liquid flows out (leaks) from the other discharge port 15, 18. .
[0065]
(7) The valve seat portion 24a is formed in a semicircular cross section, and is molded so that the die mating surface of the mold is not disposed so that at least the burrs or the like are not generated at the tip of the valve seat portion 24a. Yes. Therefore, the valve main body portion 13c is pressed and contacted with the valve seat portion 24a satisfactorily without being obstructed by burrs or the like, and the discharge ports 15 and 18 are closed well. Thereby, when the washer liquid flows out (discharges) from one of the discharge ports 15, 18, it is prevented that the washer liquid flows out (leaks) from the other discharge port 15, 18. .
[0066]
The above embodiment may be modified as follows.
In the above embodiment, the inflow port 14 is configured by the inflow cylinder portion 23 that protrudes in a cylindrical shape in a direction orthogonal to the central axis S1 of the main body portion 21 from a part of the outer periphery of the main body portion 21. If the first and second divided housings can be fitted and fixed and have the same shape, the inlet may be changed to one opened in another direction (for example, the direction of the central axis S1). In this case, by changing the shape of the main body discharge cylinder portions 5e and 5f (main body discharge ports 5i and 5j) of the pump main body 2, the main body discharge port and the inflow port can be connected, or other separate members can be used. It is necessary to connect the main body discharge ports 5i, 5j and the inflow port.
[0067]
Even if it does in this way, the metal mold | die for shape | molding the 1st and 2nd division | segmentation housing will become one type. Thereby, the cost of a production line including a mold is reduced, and as a result, the production cost can be reduced. In addition, since the first and second divided housings are molded using the same mold, the dimensional errors at the time of the molding are unified (different types of dimensional errors do not occur).
[0068]
In the above embodiment, when the first and second divided housings 11 and 12 are fitted and fixed, the valve body 13 is formed on the holding projection 28 whose outer peripheral edge portion 13a projects inwardly (inward in the radial direction). However, it may be held in another configuration (with another shape or another member). For example, by forming an engagement convex portion and an engagement concave portion that engage in the radial direction between the sandwiching portion 27 and the outer peripheral edge portion 13a, the valve body is restricted from moving inwardly (in the radial direction) of the outer peripheral edge portion 13a. May be held. Even if it does in this way, the effect similar to the effect (1)-(3) of the said embodiment and (5)-(7) can be acquired. Moreover, even if it does in this way, since the thin part 13b is not clamped, damage to the thin part 13b can be reduced. Further, even if the interval (opposite interval) H2 between the holding projections 28 facing each other and the thickness W2 of the thin portion 13b of the valve body 13 are made the same size, the effects (1) to ( The same effects as 3) and (5) to (7) can be obtained.
[0069]
In the embodiment described above, the main body discharge cylinder 5e and the inflow cylinder 23 can be fitted. The seal ring 9 fitted on the ring receiving recess 5h of the main body discharge cylinder 5e is compressed in the radial direction between the ring receiving recess 5h and the inner periphery of the inflow cylinder 23 and is brought into close contact therewith. Each shape may be changed so that the seal ring 9 is compressed in the axial direction when the seal ring 9 is connected (attached). Even if it does in this way, the effect similar to the effect (1)-(4) of the said embodiment, (6), (7) can be acquired. Even in this case, the seal is made at the location by the seal ring at the time of connection. Further, the seal ring 9 may be changed to another seal member that is assembled in a process other than the connection. Even if it does in this way, the effect similar to the effect (1)-(4) of the said embodiment, (6), (7) can be acquired.
[0070]
The valve body 13 of the above embodiment is interposed between the first valve chamber 16 and the second valve chamber 19, and the discharge port 15, due to the pressure difference between the first valve chamber 16 and the second valve chamber 19. As long as one of 18 (or inflow ports 14 and 17) is opened and the other is closed, it may be changed to one having another configuration (for example, one made of a plurality of members). Even if it does in this way, the effect similar to the effect of the said embodiment can be acquired.
[0071]
-You may change the outer discharge cylinder part 25 (discharge outlets 15 and 18) of the said embodiment so that the exit (front-end | tip) may face directions other than the central-axis S1 direction of the main-body part 21. FIG. For example, you may change an outer discharge cylinder part into the shape where the front end side was bent in the opposite direction of the inflow cylinder part 23. FIG. Even if it does in this way, the effect similar to the effect of the said embodiment can be acquired.
[0072]
In the above embodiment, the first and second divided housings 11 and 12 have the same shape, but can be fitted and fixed, and when the fitting portion is formed in a substantially annular shape and fitted and fixed. As long as the anti-rotation convex part and the anti-rotation concave part which engage in the circumferential direction and position the two inflow cylinder parts in parallel are formed, they may have different shapes. For example, it is assumed that the first divided housing is formed symmetrically on one side (left side in FIG. 4B) with the straight line L1 of the first divided housing 11 as the center line, and the second divided housing is The other side (the right side in FIG. 4B) may be formed symmetrically with the straight line L1 of the first divided housing 11 as the center line. Even if it does in this way, when the 1st and 2nd division | segmentation housings are fitted, it arrange | positions so that an inflow cylinder part may become parallel without shifting | deviating to the circumferential direction centering on the fitting direction. Therefore, since the inflow cylinder part can be fitted and connected to the main body discharge cylinder parts 5e and 5f at the same time, it can be connected and fixed satisfactorily.
[0073]
In the above embodiment, the pump device 1 for a vehicle washer is embodied. However, the pump device 1 may be used for another device.
The technical idea that can be grasped from the above embodiment will be described below together with the effects thereof.
[0074]
(A) In the valve device according to claim 2, when the fitting portion is formed in a substantially annular shape and the fitting portions are fitted and fixed to each other, the two inflows are engaged with each other in the circumferential direction. A valve device characterized in that an anti-rotation convex portion and an anti-rotation concave portion for positioning the cylindrical portion in parallel are formed in the fitting portion. In this way, when fitted and fixed, the anti-rotation projection and the anti-rotation recess engage in the circumferential direction, so that the two inflow cylinders are parallel.
[0075]
(B) The valve device according to any one of claims 1 to 4 and (A), wherein the discharge port formed in each of the first and second divided housings is formed by the first and second divided housings. Are formed on the same straight line in the fitted and fixed state of the first and second valve chambers, the inner discharge cylinder portion protruding in the cylindrical direction inward in the linear direction, and the cylindrical discharge outward in the linear direction. An inflow in which the inflow ports of the first and second divided housings protrude in a cylindrical shape in a direction orthogonal to the linear direction, and the outlet faces the outer peripheral surface of the inner discharge tube portion. A valve device characterized by being formed in a cylindrical portion. If it does in this way, it will become easy for the liquid which flows in from an inflow cylinder part to go around the inner side discharge cylinder part, a more uniform pressure will be added to a valve body, and an outlet will be obstruct | occluded favorably.
[0076]
(C) The pump device according to claim 6, wherein the fitting portion is formed in a substantially annular shape, and when the fitting portions are fitted and fixed to each other, the two inflows are engaged with each other in the circumferential direction. A pumping device characterized in that a non-rotating convex portion and a non-rotating concave portion for positioning the cylindrical portion in parallel are formed in the fitting portion. In this way, when fitted and fixed, the anti-rotation projection and the anti-rotation recess engage with each other in the circumferential direction, so that the two inflow cylinders are parallel.
[0077]
(D) In the pump device according to claim 9, when the seal member is fitted, the seal member is compressed in the radial direction between the main body discharge port and the inflow port so as to be in close contact therewith. The pump device. In this case, when the sealing member is fitted, the sealing member is compressed and adhered in a radial direction between the main body outlet and the inflow port. Therefore, in addition to the effect of the invention according to claim 9, The connection between the main body discharge port and the inflow port is strengthened by elasticity (force to stretch).
[0078]
(E) The pump device according to any one of claims 5 to 9 and (c) and (d), wherein the discharge ports formed in the first and second divided housings are the first and second parts, respectively. An inner discharge cylinder portion that is formed on the same straight line in the fitted and fixed state of the second divided housing and protrudes in a cylindrical shape inward in the linear direction of the first and second valve chambers and outward in the linear direction. It has an outer discharge cylinder portion protruding in a cylindrical shape, and the inflow port of the first and second divided housings protrudes in a cylindrical shape in a direction orthogonal to the linear direction, and its outlet is an outer peripheral surface of the inner discharge cylinder portion A pump device characterized in that the pump device is formed in an inflow cylinder portion opposed to the tube. If it does in this way, it will become easy for the liquid which flows in from an inflow cylinder part to go around the inner side discharge cylinder part, a more uniform pressure will be added to a valve body, and an outlet will be obstruct | occluded favorably.
[0079]
【The invention's effect】
As described in detail above, according to the inventions described in claims 1 to 4, 10, and 11, it is possible to provide a valve device that can be manufactured at low cost.
Moreover, according to invention of Claims 5-9, the pump apparatus which can be manufactured at low cost can be provided.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory diagram of a pump device according to an embodiment.
FIG. 2 is a schematic explanatory diagram of a pump device according to the present embodiment.
FIG. 3 is a cross-sectional view of a main body discharge cylinder portion and a valve device of the present embodiment.
4A and 4B are explanatory views for explaining the first and second divided housings of the present embodiment.
FIG. 5 is a cross-sectional view of first and second divided housings according to the present embodiment.
6A is a cross-sectional view of first and second divided housings according to the present embodiment. FIG. (B) Sectional drawing of the valve body of this Embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 2 ... Pump main body, 3 ... Valve apparatus, 4 ... Motor, 9 ... Seal ring (seal member), 11 ... 1st division | segmentation housing, 12 ... 2nd division | segmentation housing, 13 ... Valve body, 14 ... Inlet, 15 ... Discharge Outlet, 16 ... first valve chamber, 17 ... inflow port, 18 ... discharge port, 19 ... second valve chamber, 23 ... inflow cylinder part, 24 ... inner discharge cylinder part, 25 ... outer discharge cylinder part, 26 ... fitting , 27 ... clamping part, 28 ... holding projection, H2 ... interval, W2 ... thickness, 5i, 5j ... main body discharge port, 13a ... outer peripheral edge part, 13b ... thin wall part, 13c ... valve main body part, 26e, 26f ... Anti-rotation concave part, 26g, 26h ... Anti-rotation convex part, L1 ... Straight line.

Claims

A first split housing (11) for forming a first valve chamber (16) having an inlet (14) and a discharge port (15);
A second divided housing (12) fixed to the first divided housing (11) and forming a second valve chamber (19) having an inlet (17) and a discharge port (18);
The inlet (14) is interposed between the first valve chamber (16) and the second valve chamber (19), and is caused by a pressure difference between the first valve chamber (16) and the second valve chamber (19). , 17) or a valve device (13) that opens and closes the discharge port (15, 18).
Said first and second divided housing (11, 12) is composed of divided housings having the same shape, of identity with a respective engagement portion divided housing one shape (26), fitting portion (26), it the other side is the other side fitted portion while being the other hand side is a side fitting portion with respect to the straight line (L1) that evenly divide a first and a side fitting portion of the first split housing (11) and one side fitting portion of the other side fitted portion and the second divided housing of the first divided housing with the other side fitted portion is fitted (11) (12) of the two divided housing (1 2) The valve device is characterized in that the first divided housing (11) and the second divided housing (12) are fitted and fixed by fitting.

The valve device according to claim 1,
Cylindrical inflow cylinders that project both the inlets (14, 17) of the first and second divided housings (11, 12) from the peripheral surfaces of the first and second divided housings (11, 12), respectively. Part (23),
The fitting portions (26) of the first and second divided housings (11, 12) are formed so that both the inflow cylinder portions (23) are arranged in parallel when fitted and fixed to each other. A valve device characterized by.

The valve device according to claim 1 or 2,
The valve body (13) is formed of an elastic material,
When the first and second divided housings (11, 12) are fitted and fixed to each other, the first and second divided housings (11, 12) have a holding part (27) that holds the outer peripheral edge part (13a) of the valve body (13) inside thereof. A valve device characterized by.

The valve device according to claim 3,
The valve body (13) has an annular thin wall portion (13b) inside the outer peripheral edge portion (13a), and the inflow port (14, 17) or the discharge port further inside the thin wall portion (13b). The valve body (13c) for closing the outlets (15, 18) is formed continuously and integrally,
When the first and second divided housings (11, 12) are fitted and fixed to each other, the inward movement of the outer peripheral edge (13a) is restricted by projecting to the inner side of the outer peripheral edge (13a). A holding projection (28) for holding the valve body (13) is formed on the first and second divided housings (11, 12),
The amount of protrusion of the holding projection (28) is such that the interval (H2) of the holding projection (28) from which the thin portion (13b) is led out is greater than the thickness (W2) of the thin portion (13b). A valve device characterized by being set.

A first divided housing (11) for forming a first valve chamber (16) having an inlet (14) and a discharge port (15), an inlet (17) fixed to the first divided housing (11), and A second divided housing (12) for forming a second valve chamber (19) having a discharge port (18), and interposed between the first valve chamber (16) and the second valve chamber (19). A valve body (13) for opening and closing the inflow port (14, 17) or the discharge port (15, 18) by a pressure difference between the first valve chamber (16) and the second valve chamber (19); A valve device (3);
When the motor (4) is rotated forward or backward, one of the main body discharge ports (5i, 5j) connected to the two inlets (14, 17) is larger than the other. A pump body (2) for supplying a liquid of pressure,
In a pump device comprising:
The first and second divided housings (11, 12) are composed of divided housings having the same shape, and each of the divided housings having the same shape includes a fitting portion (26), and the fitting portion (26) One side is a one-side fitting portion and the other side is a second-side fitted portion with respect to a straight line (L1) that equally divides the first and second housings (11). The other-side fitted portion of the two-divided housing (12) is fitted and the other-side fitted portion of the first divided housing (11) and the one-side fitted portion of the second divided housing (12). The pump device, wherein the first divided housing (11) and the second divided housing (12) are fitted and fixed by fitting.

The pump device according to claim 5,
The two main body discharge ports (5i, 5j) are arranged in parallel with a predetermined interval,
Cylindrical inflow cylinders that project both the inlets (14, 17) of the first and second divided housings (11, 12) from the peripheral surfaces of the first and second divided housings (11, 12), respectively. Part (23),
The fitting portions (26) of the first and second divided housings (11, 12) are formed so that both the inflow cylinder portions (23) are arranged in parallel when fitted and fixed to each other. A pump device characterized by.

The pump device according to claim 5 or 6,
The valve body (13) is formed of an elastic material,
When the first and second divided housings (11, 12) are fitted and fixed to each other, the first and second divided housings (11, 12) have a holding part (27) that holds the outer peripheral edge part (13a) of the valve body (13) inside thereof. A pump device characterized by.

The pump device according to claim 7,
The valve body (13) has an annular thin wall portion (13b) inside the outer peripheral edge portion (13a), and the inflow port (14, 17) or the discharge port further inside the thin wall portion (13b). The valve body (13c) for closing the outlets (15, 18) is formed continuously and integrally,
When the first and second divided housings (11, 12) are fitted and fixed to each other, the inward movement of the outer peripheral edge (13a) is restricted by projecting to the inner side of the outer peripheral edge (13a). A holding projection (28) for holding the valve body (13) is formed on the first and second divided housings (11, 12),
The amount of protrusion of the holding projection (28) is such that the interval (H2) of the holding projection (28) from which the thin portion (13b) is led out is greater than the thickness (W2) of the thin portion (13b). A pump device characterized by being set.

The pump device according to any one of claims 5 to 8,
The main body discharge port (5i, 5j) and the inflow port (14, 17) can be fitted, and a seal member (9) that is in close contact with the other when it is made of an elastic material. The pump apparatus characterized by providing.

A first divided housing (11) for forming a first valve chamber (16) having an inflow port (14) and a discharge port (15) formed in an inflow tube portion (23) protruding in a cylindrical shape;
An inflow port (17) and a discharge port (18) formed in the inflow tube portion (23) which is fitted and fixed to the first divided housing (11) from the orthogonal direction of the inflow tube portion (23) and protrudes in a cylindrical shape. A second split housing (12) for forming a second valve chamber (19) having
The discharge port (15) is interposed between the first valve chamber (16) and the second valve chamber (19), and is caused by a pressure difference between the first valve chamber (16) and the second valve chamber (19). , 18) to open and close the inlet (14) and the discharge port (15) on the first divided housing (11) side and the inlet (17) and the outlet on the second divided housing (12) side. A valve body (13) selectively communicating with the outlet (18);
In a valve device comprising
Said first and second divided housing (11, 12) is composed of divided housings having the same shape, with split housing fitting portion of each substantially annular of identity one shape (26), fitting portion (26 ) Is a one-side fitting portion on the one side with respect to the straight line (L1) that equally divides it, and the other side is the other-side fitting portion, and one-side fitting of the first divided housing (11) The mating portion and the other side fitted portion of the second divided housing (12) are fitted, and the other side fitted portion of the first divided housing (11) and one side fitting of the second divided housing (12). By fitting the joint portion, the first divided housing (11) and the second divided housing (12) are fitted and fixed,
When the fitting portions (26) of the first and second divided housings (11, 12) are fitted and fixed to the fitting portion (26) , the two inflows are engaged with each other in the circumferential direction. An anti-rotation convex part (26g, 26h) and an anti-rotation concave part (26e, 26f) for positioning the cylinder part in parallel are formed , and the one-side fitting part is configured to include the anti-rotation concave part (26e, 26f). And the other-side mated portion includes the rotation-preventing convex portion (26g, 26h) .

The valve device according to claim 10,
The discharge ports (15, 18) formed in each of the first and second divided housings (11, 12) are identical in the fitted and fixed state of the first and second divided housings (11, 12). An inner discharge cylinder portion (24) that is formed on a line and protrudes in a cylindrical shape inward in the linear direction of the first and second valve chambers (16, 19), and protrudes in a cylindrical shape outward in the linear direction. The outer discharge cylinder (25),
The inflow tube portion (23) of the first and second divided housings (11, 12) has an outlet provided facing the outer peripheral surface of the inner discharge tube portion (24). Valve device.