JP6039901B2 - solenoid valve - Google Patents

solenoid valve Download PDF

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JP6039901B2
JP6039901B2 JP2012005765A JP2012005765A JP6039901B2 JP 6039901 B2 JP6039901 B2 JP 6039901B2 JP 2012005765 A JP2012005765 A JP 2012005765A JP 2012005765 A JP2012005765 A JP 2012005765A JP 6039901 B2 JP6039901 B2 JP 6039901B2
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valve
valve body
pipe member
outlet port
electromagnetic coil
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JP2013145015A (en
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木船　仁志
仁志 木船
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Fujikoki Corp
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Description

本発明は、自動車のウインドウォッシャ装置のウォッシャ液の流路の切り換えなどに用いられる電磁弁に関する。   The present invention relates to an electromagnetic valve used for switching a flow path of a washer liquid in a window washer device of an automobile.

図４は、上記電磁弁の一例を示し、この電磁弁１は、弁室２ａを有する弁本体２と、弁室２ａ内に配置される弁体３と、弁体３を保持する弁ホルダ４と、弁ホルダ４を下方に付勢するコイルばね６と、弁室２ａから上方に延設されるパイプ部材７と、パイプ部材７を囲繞する吸引子８と、吸引子８を囲繞する電磁コイル９と、電磁コイル９を収容するハウジング１１等で構成される。   FIG. 4 shows an example of the solenoid valve. The solenoid valve 1 includes a valve body 2 having a valve chamber 2a, a valve body 3 disposed in the valve chamber 2a, and a valve holder 4 for holding the valve body 3. A coil spring 6 that urges the valve holder 4 downward, a pipe member 7 that extends upward from the valve chamber 2a, an attractor 8 that surrounds the pipe member 7, and an electromagnetic coil that surrounds the attractor 8. 9 and a housing 11 for accommodating the electromagnetic coil 9.

弁本体２は、樹脂製で、上方が開口する弁室２ａ及び弁座２ｂを有し、弁室２ａには、弁体３が収容される。弁本体２の下面及び側面には、各々流出管１３及び流入管１４が一体に設けられ、弁室２ａは、流出管１３の内部の出口ポート１３ａ及び流入管１４の内部の入口ポート１４ａに連通すると共に、パイプ部材７の内部の出口ポート７ａに連通する。弁本体２の上端部は、モールド１５の下端部と超音波溶接により接合される（接合部１８）。   The valve body 2 is made of resin and has a valve chamber 2a and a valve seat 2b that open upward, and the valve body 3 is accommodated in the valve chamber 2a. An outflow pipe 13 and an inflow pipe 14 are integrally provided on the lower surface and side surface of the valve body 2, and the valve chamber 2 a communicates with an outlet port 13 a inside the outflow pipe 13 and an inlet port 14 a inside the inflow pipe 14. In addition, it communicates with the outlet port 7 a inside the pipe member 7. The upper end portion of the valve body 2 is joined to the lower end portion of the mold 15 by ultrasonic welding (joint portion 18).

弁体３は、図５に示すように、ゴムやその他の樹脂からなる弾性体で形成され、平面状の天井面３ａと、弁体３の外周面に形成される大径部３ｂと、下方に開口する空間３ｃとを備える。   As shown in FIG. 5, the valve body 3 is formed of an elastic body made of rubber or other resin, and has a flat ceiling surface 3a, a large diameter portion 3b formed on the outer peripheral surface of the valve body 3, and a lower part. And a space 3c that is open.

図４に示すように、弁ホルダ４は、磁性材料からなり、水平方向に貫通する複数の貫通孔４ａと、下端部において上記弁体３の外周面に形成された段部を保持する環状保持部４ｂとを備える。   As shown in FIG. 4, the valve holder 4 is made of a magnetic material, and has a plurality of through holes 4 a penetrating in the horizontal direction and an annular holding for holding a step formed on the outer peripheral surface of the valve body 3 at the lower end. Part 4b.

付勢部材としてのコイルばね６は、モールド１５の中央下面１５ａと弁ホルダ４との間に介装され、弁ホルダ４を常時下方に付勢する。   The coil spring 6 as an urging member is interposed between the central lower surface 15a of the mold 15 and the valve holder 4, and urges the valve holder 4 downward at all times.

パイプ部材７は、弁本体２の弁室２ａから上方に延設され、内部の出口ポート７ａが流出口７ｂを介して弁室２ａに連通する。   The pipe member 7 extends upward from the valve chamber 2a of the valve body 2, and the internal outlet port 7a communicates with the valve chamber 2a via the outflow port 7b.

吸引子８は、パイプ部材７を囲繞すると共に、電磁コイル９への励磁により弁ホルダ４を吸引するために備えられる。   The attractor 8 surrounds the pipe member 7 and is provided for attracting the valve holder 4 by exciting the electromagnetic coil 9.

電磁コイル９は、吸引子８を囲繞するように配置され、電磁コイル９の周囲はモールド１５で封止される。モールド１５の右上部１５ｂには、電磁コイル９に給電するための端子１６が設けられる。   The electromagnetic coil 9 is disposed so as to surround the attractor 8, and the periphery of the electromagnetic coil 9 is sealed with a mold 15. A terminal 16 for supplying power to the electromagnetic coil 9 is provided on the upper right portion 15 b of the mold 15.

プレート１２は、均一な厚さを有する磁性材料からなり、モールド１５にインサート成形される。   The plate 12 is made of a magnetic material having a uniform thickness, and is insert-molded into the mold 15.

ハウジング１１は、磁性材料からなり、モールド１５を覆うように装着され、プレート１２にかしめ固定される。   The housing 11 is made of a magnetic material, is mounted so as to cover the mold 15, and is caulked and fixed to the plate 12.

上記構成を有する電磁弁１は、電磁コイル９を励磁しない場合には、弁体３と一体化された弁ホルダ４がコイルばね６によって下方に付勢されているため、弁体３も下方に付勢されて弁本体２の弁座２ｂに当接し、出口ポート１３ａが閉じられ、出口ポート７ａが開く。   In the electromagnetic valve 1 having the above configuration, when the electromagnetic coil 9 is not excited, the valve holder 4 integrated with the valve body 3 is urged downward by the coil spring 6, so that the valve body 3 is also moved downward. It is urged to contact the valve seat 2b of the valve body 2, the outlet port 13a is closed, and the outlet port 7a is opened.

一方、電磁コイル９を励磁すると、弁体３と一体化された弁ホルダ４が吸引子８に吸引されて上方へ移動し、これに伴い、弁体３も上方に移動してパイプ部材７の流出口７ｂを塞ぎ、出口ポート７ａが閉じられ、出口ポート１３ａが開く。   On the other hand, when the electromagnetic coil 9 is energized, the valve holder 4 integrated with the valve body 3 is attracted by the attractor 8 and moves upward. With this, the valve body 3 also moves upward and the pipe member 7 The outlet 7b is closed, the outlet port 7a is closed, and the outlet port 13a is opened.

しかし、上記図４に示した電磁弁１においては、電磁コイル９に励磁し、図６に示すように、弁ホルダ４の環状保持部４ｂで下方から弁体３の大径部３ｂを持ち上げた際に、弁体３の上面３ａと、パイプ部材７の下端部７ｃとの当接部に応力が生じて弁体３の上面３ａが湾曲し、弁体３の上面３ａとパイプ部材７の下端部７ｃとの間に隙間が生じて流体が漏れるおそれがあった。   However, in the electromagnetic valve 1 shown in FIG. 4, the electromagnetic coil 9 is excited, and the large-diameter portion 3b of the valve body 3 is lifted from below by the annular holding portion 4b of the valve holder 4 as shown in FIG. At this time, stress is generated at the contact portion between the upper surface 3 a of the valve body 3 and the lower end portion 7 c of the pipe member 7, so that the upper surface 3 a of the valve body 3 is curved and the upper surface 3 a of the valve body 3 and the lower end of the pipe member 7 are There was a possibility that a fluid might leak due to a gap between the portion 7c and the fluid.

そこで、本発明は、上記電磁弁における問題点に鑑みてなされたものであって、弾性体からなる弁体と、パイプ部材との間の流体の漏れを防止することのできる電磁弁を提供することを目的とする。   Therefore, the present invention has been made in view of the problems in the above-described electromagnetic valve, and provides an electromagnetic valve capable of preventing fluid leakage between a valve body made of an elastic body and a pipe member. For the purpose.

上記目的を達成するため、本発明は、入口ポート及び第１の出口ポートの各々に連通する弁室を有する弁本体と、前記弁室内に配置される弾性体からなる弁体と、磁性材料からなり、前記弁体を下方から保持する環状保持部を有する弁ホルダと、該弁ホルダを前記第１の出口ポートの方向に付勢する付勢部材と、前記弁室に連通する第２の出口ポートを有し、前記弁室から上方に延設されるパイプ部材と、該パイプ部材を囲繞する吸引子と、該吸引子を囲繞する電磁コイルとを備え、前記電磁コイルを励磁することにより、前記弁ホルダが前記吸引子に吸引され、前記弁体の上面が前記パイプ部材の下端部に当接することにより、前記第２の出口ポートを閉じ、前記電磁コイルへの励磁を解除することにより、前記弁ホルダが前記吸引子から離間して前記弁体が前記第１の出口ポートを閉じる電磁弁であって、前記環状保持部は、前記パイプ部材の前記下端部の外径より大きな径で構成され、前記電磁コイルを励磁した際に、前記弁ホルダから前記弁体に与えられる応力により弾性変形して前記パイプ部材の下端部と前記弁体との当接部に生じる応力を吸収する応力吸収部を、前記弁体の下部と前記環状保持部とが当接する部分に備えることを特徴とする。 To achieve the above object, the present invention includes a valve body having a valve chamber communicating with each of an inlet port and a first outlet port, a valve body made of an elastic body disposed in the valve chamber, and a magnetic material. A valve holder having an annular holding portion for holding the valve body from below, a biasing member for biasing the valve holder in the direction of the first outlet port, and a second outlet communicating with the valve chamber A pipe member having a port and extending upward from the valve chamber; an attractor that surrounds the pipe member; and an electromagnetic coil that surrounds the attractor, and exciting the electromagnetic coil, By closing the second outlet port by releasing the excitation to the electromagnetic coil, the valve holder is sucked by the suction element, and the upper surface of the valve body comes into contact with the lower end portion of the pipe member. The valve holder from the suction element; An electromagnetic valve in which the valve body closes the first outlet port and between said annular holding portion is composed of a larger diameter than the outer diameter of the lower end portion of the pipe member was excited electromagnetic coil when, the stress absorbing portion for absorbing the stress generated in the contact portion is elastically deformed by the stress applied to said valve body from said valve holder and a lower end portion of the pipe member and the valve body, the lower portion of the valve body And a portion where the annular holding portion abuts .

そして、本発明によれば、応力吸収部を設けたことで、電磁コイルを励磁して弁ホルダが吸引子に吸引され、弁体の上面がパイプ部材の下端部に当接した際に、当接部に生じる応力を吸収することができるため、弁体の上面が湾曲せず、弁体の上面とパイプ部材の下端部と間の流体の漏れを確実に防止することができる。   According to the present invention, when the stress absorbing portion is provided, the electromagnetic coil is excited to attract the valve holder to the attractor, and when the upper surface of the valve body comes into contact with the lower end portion of the pipe member, Since the stress generated in the contact portion can be absorbed, the upper surface of the valve body is not curved, and fluid leakage between the upper surface of the valve body and the lower end portion of the pipe member can be reliably prevented.

上記電磁弁において、前記弁体の上部に前記環状保持部によって下方から保持される大径部を形成し、該大径部に前記環状保持部との当接面に開口する複数の切欠きを設け、該複数の切欠きの間の部位を前記応力吸収部とすることができる。 In the electromagnetic valve, before the large-diameter portion is formed which is held from below by the annular holding portion at the top of the Kiben body, a plurality of switching to open the contact surface between the front Symbol annular holding portion to the large diameter portion A notch is provided, and a portion between the plurality of notches can be the stress absorbing portion.

以上のように、本発明によれば、弁体の上面とパイプ部材の下端部との間の流体の漏れを確実に防止することができる電磁弁を提供することができる。   As described above, according to the present invention, it is possible to provide an electromagnetic valve that can reliably prevent fluid leakage between the upper surface of the valve body and the lower end portion of the pipe member.

本発明に係る電磁弁の一実施の形態を示す断面図である。It is sectional drawing which shows one Embodiment of the solenoid valve which concerns on this invention. 図１に示す電磁弁の弁体を示し、（ａ）は正面図、（ｂ）は下面図、（ｃ）は（ａ）のＡ−Ａ線断面図である。The valve body of the solenoid valve shown in FIG. 1 is shown, (a) is a front view, (b) is a bottom view, and (c) is a cross-sectional view along line AA in (a). 図１に示す電磁弁の電磁コイルへ励磁した状態を示し、（ａ）は弁体及びその近傍の拡大断面図、（ｂ）は（ａ）のＢ部拡大図である。The state which excited to the electromagnetic coil of the electromagnetic valve shown in FIG. 1 is shown, (a) is an enlarged sectional view of a valve body and its vicinity, (b) is the B section enlarged view of (a). 本発明及び従来の電磁弁を示す断面図である。It is sectional drawing which shows this invention and the conventional solenoid valve. 図４に示す従来の電磁弁の弁体を示し、（ａ）は正面図、（ｂ）は下面図、（ｃ）は（ａ）のＣ−Ｃ線断面図である。The valve body of the conventional solenoid valve shown in FIG. 4 is shown, (a) is a front view, (b) is a bottom view, and (c) is a sectional view taken along the line CC of (a). 図４に示す従来の電磁弁の電磁コイルへ励磁した際の弁体及びその近傍を示す拡大断面図である。It is an expanded sectional view which shows the valve body at the time of exciting to the electromagnetic coil of the conventional solenoid valve shown in FIG. 4, and its vicinity.

次に、本発明を実施するための形態について図面を参照しながら詳細に説明する。   Next, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

図１は、本発明に係る電磁弁の一実施の形態を示し、この電磁弁２１の基本構成及び動作は、図４に示した電磁弁１と同様であって、弁体３に代えて弁体２３を備える点のみ異なる。   FIG. 1 shows an embodiment of an electromagnetic valve according to the present invention. The basic configuration and operation of the electromagnetic valve 21 are the same as those of the electromagnetic valve 1 shown in FIG. The only difference is that the body 23 is provided.

この弁体２３は、図２に示すように、従来と同様、ゴムや樹脂等の弾性体で形成され、平面状の天井面２３ａと、弁体２３の外周面に形成される大径部２３ｂと、下方に開口する空間２３ｃとを有し、さらに、大径部２３ｂの弁ホルダ４の環状保持部（図１、図３参照）４ｂとの当接面２３ｄ（図３（ｂ）参照）に開口するとともに大径部２３ｂの周方向に一定間隔で設けられる切欠き２３ｅと、隣接する切欠き２３ｅの間の突出部である応力吸収部２３ｆとを備える。   As shown in FIG. 2, the valve body 23 is formed of an elastic body such as rubber or resin, and has a flat ceiling surface 23 a and a large-diameter portion 23 b formed on the outer peripheral surface of the valve body 23. And a space 23c that opens downward, and a contact surface 23d (see FIG. 3B) of the large-diameter portion 23b with the annular holder 4b of the valve holder 4 (see FIGS. 1 and 3). And a notch 23e provided at regular intervals in the circumferential direction of the large diameter portion 23b, and a stress absorbing portion 23f that is a protrusion between adjacent notches 23e.

弁体２３を上記のように構成することで、図１において、電磁コイル９に励磁して弁ホルダ４が吸引子８に吸引され、図３に示すように、弁体２３の上面２３ａがパイプ部材７の下端部７ｃに当接した際に、当接部に生じる応力を、図３（ｂ）に示すように、応力吸収部２３ｆが弾性変形して弁ホルダ４に当接することによって吸収することができるため、弁体３の天井面２３ａが湾曲せず、弁体２３の天井面２３ａとパイプ部材７の下端部７ｃとの間の流体の漏れを確実に防止することができる。   By configuring the valve body 23 as described above, in FIG. 1, the electromagnetic coil 9 is energized to attract the valve holder 4 to the attractor 8, and as shown in FIG. As shown in FIG. 3 (b), the stress generated in the contact portion when it contacts the lower end portion 7 c of the member 7 is absorbed by the stress absorbing portion 23 f elastically deforming and contacting the valve holder 4. Therefore, the ceiling surface 23a of the valve body 3 is not curved, and fluid leakage between the ceiling surface 23a of the valve body 23 and the lower end portion 7c of the pipe member 7 can be reliably prevented.

上記実施の形態においては、弁体２３の大径部２３ｂに切欠き２３ｅを形成し、隣接する切欠き２３ｅの間の突出部で応力吸収部２３ｆを構成しているため、従来例に比べて部品点数が増加することがないという利点を有する。   In the above embodiment, the notch 23e is formed in the large-diameter portion 23b of the valve body 23, and the stress absorbing portion 23f is configured by the protruding portion between the adjacent notches 23e. There is an advantage that the number of parts does not increase.

１、２１ 電磁弁
２ 弁本体
２ａ 弁室
２ｂ 弁座
２３ 弁体
２３ａ 天井面
２３ｂ 大径部
２３ｃ 空間
２３ｄ 当接面
２３ｅ 切欠き
２３ｆ 応力吸収部
４ 弁ホルダ
４ａ 貫通孔
４ｂ 環状保持部
６ コイルばね
７ パイプ部材
７ａ 出口ポート
７ｂ 流出口
７ｃ 下端部
８ 吸引子
９ 電磁コイル
１１ ハウジング
１２ プレート
１３ 流出管
１３ａ 出口ポート
１４ 流入管
１４ａ 入口ポート
１５ モールド
１５ａ 中央下面
１５ｂ 右上部
１６ 端子
１８ 接合部 1, 21 Solenoid valve 2 Valve body 2a Valve chamber 2b Valve seat 23 Valve body 23a Ceiling surface 23b Large diameter portion 23c Space 23d Contact surface 23e Notch 23f Stress absorbing portion 4 Valve holder 4a Through hole 4b Annular holding portion 6 Coil spring 7 Pipe member 7a Outlet port 7b Outlet 7c Lower end 8 Suction element 9 Electromagnetic coil 11 Housing 12 Plate 13 Outlet pipe 13a Outlet port 14 Inlet pipe 14a Inlet port 15 Mold 15a Central lower surface 15b Upper right part 16 Terminal 18 Joint part

Claims (2)

入口ポート及び第１の出口ポートの各々に連通する弁室を有する弁本体と、
前記弁室内に配置される弾性体からなる弁体と、
磁性材料からなり、前記弁体を下方から保持する環状保持部を有する弁ホルダと、
該弁ホルダを前記第１の出口ポートの方向に付勢する付勢部材と、
前記弁室に連通する第２の出口ポートを有し、前記弁室から上方に延設されるパイプ部材と、
該パイプ部材を囲繞する吸引子と、
該吸引子を囲繞する電磁コイルとを備え、
前記電磁コイルを励磁することにより、前記弁ホルダが前記吸引子に吸引され、前記弁体の上面が前記パイプ部材の下端部に当接することにより、前記第２の出口ポートを閉じ、前記電磁コイルへの励磁を解除することにより、前記弁ホルダが前記吸引子から離間して前記弁体が前記第１の出口ポートを閉じる電磁弁であって、
前記環状保持部は、前記パイプ部材の前記下端部の外径より大きな径で構成され、
前記電磁コイルを励磁した際に、前記弁ホルダから前記弁体に与えられる応力により弾性変形して前記パイプ部材の下端部と前記弁体との当接部に生じる応力を吸収する応力吸収部を、前記弁体の下部と前記環状保持部とが当接する部分に備えることを特徴とする電磁弁。 A valve body having a valve chamber communicating with each of the inlet port and the first outlet port;
A valve body made of an elastic body disposed in the valve chamber;
A valve holder made of a magnetic material and having an annular holding portion for holding the valve body from below;
A biasing member that biases the valve holder in the direction of the first outlet port;
A pipe member having a second outlet port communicating with the valve chamber and extending upward from the valve chamber;
A suction member surrounding the pipe member;
An electromagnetic coil surrounding the attractor,
By energizing the electromagnetic coil, the valve holder is attracted by the attractor, and the upper surface of the valve body comes into contact with the lower end of the pipe member, thereby closing the second outlet port, and the electromagnetic coil By releasing the excitation to the solenoid, the valve holder is separated from the attractor and the valve body closes the first outlet port,
The annular holding portion is configured with a diameter larger than the outer diameter of the lower end portion of the pipe member,
A stress absorbing portion that absorbs stress generated at a contact portion between the lower end portion of the pipe member and the valve body by being elastically deformed by stress applied to the valve body from the valve holder when the electromagnetic coil is excited; The electromagnetic valve is provided in a portion where the lower part of the valve body and the annular holding portion come into contact with each other. 前記弁体の上部に前記環状保持部によって下方から保持される大径部を備え、
該大径部に前記環状保持部との当接面に開口する複数の切欠きを備え、
該複数の切欠きの間の部位が前記応力吸収部として機能することを特徴とする請求項１に記載の電磁弁。 Includes a large diameter portion which is held from below by the annular holding portion at the top of the front Kiben body,
Comprising a plurality of notches which open to the abutment surface of the front Symbol annular holding portion to the large diameter portion,
Solenoid valve according to claim 1 site between the plurality of notches is equal to or which function as the stress absorbing portion.
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JPS5511827B2 (en) * 1974-04-19 1980-03-27
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JPH0373772U (en) * 1989-11-22 1991-07-24
JP2576530Y2 (en) * 1992-04-22 1998-07-16 株式会社デンソー solenoid valve
JPH07180782A (en) * 1993-12-24 1995-07-18 Aisan Ind Co Ltd Solenoid valve
JP2703189B2 (en) * 1994-10-11 1998-01-26 シーケーディ株式会社 Three-way solenoid valve
DE10161995A1 (en) * 2001-12-18 2003-07-03 Bosch Gmbh Robert magnetic valve
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