JPH0229329Y2 - - Google Patents

Description

【考案の詳細な説明】 ［産業上の利用分野］ 本考案は、例えば自動車におけるエンジンバキ
ユーム等の圧力源からその圧力を負荷駆動用とし
て選択的に取出す場合等に使用される三方弁形の
弁装置に関する。[Detailed description of the invention] [Field of industrial application] The present invention is a three-way valve type used when selectively extracting pressure from a pressure source such as an engine vacuum in an automobile for driving a load. Regarding a valve device.

［従来技術］ 例えば自動車において、空調装置のエアダクト
開閉用のダンパを駆動する場合に、その駆動源と
してエンジンバキユームの圧力を利用することが
行なわれており、この場合にはその圧力を選択的
に取出すために三方弁形の弁装置が使用される。
ところが、従来の弁装置にあつては、弁本体部と
可動部分である操作部材との間を可撓性あるシー
ル部材によりシールする構造になされている関係
上、そのシール構造ひいては全体の構造が複雑化
してコスト高になるばかりか、操作部材の操作時
にはシール部材を変形させるために比較的大きな
力が必要となつてその操作性が悪化するという問
題点があつた。[Prior Art] For example, in automobiles, when driving the damper for opening and closing the air duct of an air conditioner, the pressure of the engine vacuum is used as the driving source, and in this case, the pressure is selectively used. A three-way valve type valve device is used to take out the water.
However, in conventional valve devices, the structure is such that a flexible seal member is used to seal between the valve body and the operating member, which is a movable part. Not only is this complicated and costly, but also a relatively large force is required to deform the sealing member when operating the operating member, resulting in poor operability.

［考案の目的］ 本考案は上記事情に鑑みてなされたものであ
り、その目的は、三方弁形のものでありながらシ
ール部材を１個用いるだけで済む上にシール構造
を簡略化できてコスト安になし得ると共に、操作
部材の操作に必要な荷重を小さくできて操作性を
向上させ得る等の効果を奏する弁装置を提供する
にある。[Purpose of the invention] The present invention was made in view of the above circumstances, and its purpose is to simplify the sealing structure by using only one sealing member despite the three-way valve type, and to reduce costs. It is an object of the present invention to provide a valve device that can be made inexpensively and has effects such as reducing the load necessary for operating an operating member and improving operability.

［考案の要約］ 本考案は上記目的を達成するために、ポート及
び互いに離間された第１、第２の弁孔を有したベ
ース部上にカバー部を被着して成る本体ケース、
前記ポート及び第１、第２の弁孔を覆つた状態で
周縁部が前記ベース部及びカバー部間に気密に挟
持されそのベース部との間で弁室を形成する可撓
材料製のシール部材、このシール部材に前記第
１、第２の弁孔と夫々対向するように形成された
第１、第２の弁体、前記シール部材を揺動可能に
保持しその揺動に応じて上記シール部材を第１の
弁体により前記第１の弁孔を閉鎖し且つ前記第２
の弁孔を開放させた第１の位置と前記第２の弁体
により前記第２の弁孔を閉鎖し且つ第１の弁孔を
開放させた第２の位置との間で往復動させる保持
部材、前記シール部材を常時において前記第１の
位置へ付勢するばね部材、並びに前記保持部材を
前記ばね部材のばね力に抗して揺動させて前記シ
ール部材を前記第２の位置へ移動させる操作手段
を設ける構成としたものであり、これによつて本
体ケースと可動部分である操作手段との間のシー
ルを不要にすると共に必要となるシール部材数が
１個で済むようにしたものである。[Summary of the invention] In order to achieve the above object, the present invention provides a main body case comprising a cover part attached to a base part having a port and first and second valve holes spaced apart from each other;
a seal member made of a flexible material whose peripheral edge is airtightly sandwiched between the base part and the cover part while covering the port and the first and second valve holes, and forms a valve chamber with the base part; , first and second valve bodies formed in the seal member to face the first and second valve holes, respectively, the seal member is swingably held, and the seal is moved in accordance with the swing. The member closes the first valve hole with the first valve body and closes the second valve hole with the first valve body.
Holding by reciprocating between a first position in which the valve hole is opened and a second position in which the second valve hole is closed by the second valve body and the first valve hole is opened. a spring member that always urges the sealing member to the first position, and the holding member is swung against the spring force of the spring member to move the sealing member to the second position. This configuration eliminates the need for a seal between the main body case and the operating means, which is a movable part, and only requires one sealing member. It is.

［実施例］ 以下、本考案の実施例について、第１図及び第
２図を参照しながら説明する。[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2.

１はベース部２上にカバー部３を被着して成る
本体ケースで、ベース部２には、その中央部に位
置したポート２ａ及びこのポート２ａの左、右に
位置した第１の弁孔２ｂ、第２の弁孔２ｃが一列
状に形成されていると共に、その上面部の周囲全
域に渡つて溝部２ｄが刻設されている。４はシリ
コンゴムその他の可撓性ある材料より成るシール
部材で、これはその周縁部に前記溝部２ｄ内に嵌
り込む断面円形状の抜け止め兼用封止部４ａを有
する。そして、このシール部材４は、本体ケース
１内に前記ポート２ａ及び弁孔２ｂ，２ｃを覆つ
た状態で配置され、且つこの状態で前記封止部４
ａがベース部２とカバー部３との間に気密に挟持
されるものであり、これによつてこのシール部材
４とベース部２との間に弁室５が形成されてれい
る。また、斯かるシール部材４の下面（即ち弁室
５に臨む面）には、前記各弁孔２ｂ，２ｃに対向
するようにしてこれら弁孔２ｂ，２ｃを開閉する
ための一対の第１、第２の弁体６ａ，６ｂが一体
に形成されている。７は保持部材で、これは自身
が有する一対の透孔７ａ，７ｂに前記弁体６ａ，
６ｂを貫挿させることによつてシール部材４を保
持するように設けられ、ベース部２の上面中央部
に形成された受け部２ｅの支点として上記シール
部材４と共に左、右に揺動可能に構成されてい
る。このようにシール部材４を保持する保持部材
７が揺動可能に設けられた結果、弁体６ａ，６ｂ
は、保持部材７の揺動に応じて、弁孔２ｂを閉鎖
し且つ弁孔２ｃを開放させた第１の位置（第１図
参照）と弁孔２ｂを開放し且つ弁孔２ｃを閉鎖さ
せた第２の位置との間で往復動されるようにな
る。一方、カバー３の左方寄り部位には前記弁体
６ａに対応するようにしてばね受け凹部３ａが形
成されていると共に、シール部材４の左方部には
このばね受け凹部３ａと対向するようにしてばね
受け座４ｂが突設されており、これらばね受け凹
部３ａとばね受け座４ｂとの間にはばね部材たる
圧縮コイルばね８が介装されている。従つて、シ
ール部材４は、常時において上記圧縮コイルばね
８のばね力によつて前記第１の位置に付勢される
ようになつている。また、カバー３の右方寄り部
位には前記弁体６ｂに対応するようにしてガイド
筒３ｂが形成されており、このガイド筒３ｂ内に
は操作手段たる操作ロツド９が上下移動可能に配
設されている。尚、１０は操作ロツド９を常時に
おいて上方け付勢するための圧縮コイルばねであ
る。 Reference numeral 1 denotes a main body case consisting of a cover part 3 mounted on a base part 2, and the base part 2 has a port 2a located in the center thereof and first valve holes located on the left and right of this port 2a. 2b and a second valve hole 2c are formed in a line, and a groove 2d is carved across the entire circumference of the upper surface. Reference numeral 4 denotes a sealing member made of silicone rubber or other flexible material, and this sealing member has at its peripheral edge a sealing part 4a having a circular cross-section and serving as a stopper and fitting into the groove 2d. The sealing member 4 is disposed in the main body case 1 in a state covering the port 2a and the valve holes 2b, 2c, and in this state, the sealing member 4
A is airtightly sandwiched between the base portion 2 and the cover portion 3, and thereby a valve chamber 5 is formed between the seal member 4 and the base portion 2. Further, on the lower surface of the sealing member 4 (i.e., the surface facing the valve chamber 5), a pair of first and second holes are provided on the lower surface of the sealing member 4 (that is, the surface facing the valve chamber 5) for opening and closing the valve holes 2b and 2c so as to face each of the valve holes 2b and 2c. The second valve bodies 6a, 6b are integrally formed. Reference numeral 7 denotes a holding member, which has a pair of through holes 7a, 7b that hold the valve body 6a,
6b is inserted so as to hold the seal member 4, and can swing to the left and right together with the seal member 4 as a fulcrum of the receiving portion 2e formed at the center of the upper surface of the base portion 2. It is configured. As a result of the holding member 7 that holds the seal member 4 being swingably provided, the valve bodies 6a, 6b
In response to the swinging of the holding member 7, the first position (see FIG. 1) is where the valve hole 2b is closed and the valve hole 2c is open, and the valve hole 2b is opened and the valve hole 2c is closed. and the second position. On the other hand, a spring receiving recess 3a is formed in a leftward portion of the cover 3 so as to correspond to the valve body 6a, and a spring receiving recess 3a is formed in a left side portion of the sealing member 4 so as to face the spring receiving recess 3a. A spring receiving seat 4b is provided in a protruding manner, and a compression coil spring 8 serving as a spring member is interposed between the spring receiving recess 3a and the spring receiving seat 4b. Therefore, the seal member 4 is always urged to the first position by the spring force of the compression coil spring 8. Further, a guide cylinder 3b is formed in a right-hand portion of the cover 3 so as to correspond to the valve body 6b, and an operating rod 9 serving as an operating means is disposed within this guide cylinder 3b so as to be movable up and down. has been done. Incidentally, reference numeral 10 denotes a compression coil spring for constantly biasing the operating rod 9 upward.

しかして、１１は例えば自動車においてエンジ
ンバキユームを利用して負荷を駆動する場合によ
く用いられる周知構成のダイアフラム式のアクチ
ユエータで、ダイアフラム１１ａによつて区切ら
れた大気室１１ｂ、負圧室11cを有すると共に、
復帰用ばね１１ｄを有し、その出力軸１１ｅが図
示しないワイヤを介して上記負荷に連結されてい
る。１２はエンジンのインテークマニホルドに連
結された負圧源としてのバキユームタンクであ
る。そして、例えば前記本体ケース１が有するポ
ート２ａは上記アクチユエータ１１の負圧室１１
ｃに連結され、また弁孔２ｂはバキユームタンク
１２に連結されると共に、弁孔２ｃは大気に連通
される。 Reference numeral 11 designates a diaphragm actuator with a well-known structure that is often used when driving a load using an engine vacuum in an automobile, for example, and includes an atmospheric chamber 11b and a negative pressure chamber 11c separated by a diaphragm 11a. Along with having,
It has a return spring 11d, and its output shaft 11e is connected to the load via a wire (not shown). 12 is a vacuum tank connected to the intake manifold of the engine and serving as a negative pressure source. For example, the port 2a of the main body case 1 is connected to the negative pressure chamber 11 of the actuator 11.
The valve hole 2b is connected to the vacuum tank 12, and the valve hole 2c is connected to the atmosphere.

次に上記構成の作用について説明する。今、第
１図の状態即ち弁体６ａ，６ｂが第１の位置にあ
る状態では、弁孔２ｂが閉鎖され且つ弁孔２ｃが
開放されているため、アクチユエータ１１の負圧
室１１ｃがポート２ａ、弁室５及び弁孔２ｃを介
して大気に連通されるようになる。従つて、この
状態では、負圧室１１ｃと大気室１１ｂとの間に
圧力差が生じないため、出力軸１１ｅは何等移動
されない。この状態から操作ロツド９を押圧操作
すると、その操作ロツド９の先端によつてシール
部材４の右方部位が押し下げられて保持部材７が
シール部材４と共に揺動するようになり、弁体６
ａ，６ｂが第２の位置に移動されて弁孔２ｂが開
放され且つ弁孔２ｃが閉鎖されるようになり、以
てアクチユエータ１１の負圧室１１ｃがポート２
ａ、弁室５及び弁孔２ｂを介してバキユームタン
ク１２に連通されるようになる。従つて、この状
態では、負圧室１１ｃと大気室１１ｃとの間に大
きな圧力差が生じて、ダイアフラム１１ａひいて
は出力軸１１ｅが第１図中矢印方向に移動されて
負荷が駆動されるようになる。そして、この後に
操作ロツド９の押圧操作を解除すれば、保持部材
７及びシール部材４が圧縮コイルばね８のばね力
によつて第１図の状態に復帰されて、出力軸１１
ｅが元の位置に戻される。尚、この場合、操作ロ
ツド９にラツチ機構を設けておけば上記負荷の駆
動状態を継続することができる。 Next, the operation of the above configuration will be explained. Now, in the state shown in FIG. 1, that is, the state in which the valve bodies 6a and 6b are in the first position, the valve hole 2b is closed and the valve hole 2c is open, so that the negative pressure chamber 11c of the actuator 11 is in the port 2a. , the valve chamber 5 and the valve hole 2c communicate with the atmosphere. Therefore, in this state, there is no pressure difference between the negative pressure chamber 11c and the atmospheric chamber 11b, so the output shaft 11e is not moved at all. When the operating rod 9 is pressed from this state, the right part of the sealing member 4 is pushed down by the tip of the operating rod 9, and the holding member 7 swings together with the sealing member 4.
a, 6b are moved to the second position, the valve hole 2b is opened and the valve hole 2c is closed, so that the negative pressure chamber 11c of the actuator 11 is opened to the port 2.
a, it is communicated with the vacuum tank 12 via the valve chamber 5 and the valve hole 2b. Therefore, in this state, a large pressure difference is generated between the negative pressure chamber 11c and the atmospheric chamber 11c, and the diaphragm 11a and eventually the output shaft 11e are moved in the direction of the arrow in FIG. 1, so that the load is driven. Become. Then, when the pressing operation of the operating rod 9 is released, the holding member 7 and the sealing member 4 are returned to the state shown in FIG. 1 by the spring force of the compression coil spring 8, and the output shaft 11
e is returned to its original position. In this case, if the operating rod 9 is provided with a latch mechanism, the drive state of the load can be continued.

上記した本実施例によれば、三方弁形のもので
ありながら１個のシール部材４を設ければ済むと
共に、弁室５をシールするためにシール部材４の
周縁部を挟持するだけで済むものであつて、本体
ケース１と可動部分である操作ロツド９との間に
シールが不要な構造であるから、そのシール構造
が従来のように複雑化することがなく、以て全体
の構造を簡略化できてコスト安になし得る。勿
論、操作ロツド９の操作時において従来のように
大きな荷重を必要としないものであり、その操作
性を向上させ得る。また、本実施例によれば、ポ
ート２ａ及び弁体２ｂ，２ｃを同一方向から導出
することができるから、その配管作業を容易に行
ない得ると共に、配管部分のシール構造をも簡略
化することができるものである。 According to the present embodiment described above, only one seal member 4 needs to be provided even though it is a three-way valve type, and only the peripheral edge of the seal member 4 needs to be held in order to seal the valve chamber 5. Since the structure does not require a seal between the main body case 1 and the operating rod 9, which is a movable part, the seal structure does not become complicated as in the past, and the overall structure can be improved. It can be simplified and the cost can be reduced. Of course, when operating the operating rod 9, a large load is not required as in the conventional case, and the operability can be improved. Further, according to this embodiment, since the port 2a and the valve bodies 2b and 2c can be led out from the same direction, the piping work can be easily carried out, and the sealing structure of the piping portion can also be simplified. It is possible.

尚、本考案は上記した実施例に限定されるもの
ではなく、例えば第３図及び第４図に示す本考案
の第２の実施例のように、多連形の弁装置として
構成しても良く、この場合には、隣接する本体ケ
ース１が有する各ポート２ａの通気路１３を介し
て連通させる構成としている。 It should be noted that the present invention is not limited to the embodiments described above, and may be configured as a multiple valve device, for example, as in the second embodiment of the present invention shown in FIGS. 3 and 4. Preferably, in this case, each port 2a of the adjacent main body case 1 is configured to communicate through the ventilation path 13.

その他、本考案は上記し且つ図面に示した各実
施例に限定されるものではなく、その要旨を逸脱
しない範囲で種々変形して実施することができる
ものである。 In addition, the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with various modifications without departing from the gist thereof.

［考案の効果］ 本考案によれば以上の説明すよつて明らかなよ
うに、三方弁形のものでありながらシール部材を
１個用いるだけで済む上にシール構造ひいては全
体の構造を簡略化できてコスト安になし得ると共
に、操作部材の操作に必要な荷重を小さくできて
操作性を向上させ得る等の実用上有益な効果を奏
するものである。[Effects of the invention] As is clear from the above explanation, according to the present invention, only one sealing member is required even though it is a three-way valve type, and the sealing structure and the overall structure can be simplified. In addition to reducing the cost, the load required for operating the operating member can be reduced to improve operability, which is beneficial in practical terms.

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

第１図及び第２図は本考案の第１の実施例を示
す夫々縦断側面図及び縦断正面図、また、第３図
及び第４図は本考案の第２の実施例を示す夫々第
１図相当図及び第２図相当図である。 図中、１は本体ケース、２はベース部、２ａは
ポート、２ｂは第１の弁孔、２ｃは第２の弁孔、
３はカバー部、４はシール部材、４ａは抜け止め
用封止部、５は弁室、６ａは第１の弁体、６ｂは
第２の弁体、７は保持部材、８は圧縮コイルばね
（ばね部材）、９は操作ロツド（操作手段）を示
す。 1 and 2 are a vertical side view and a vertical front view, respectively, showing a first embodiment of the present invention, and FIGS. 3 and 4 are a first embodiment, respectively, showing a second embodiment of the present invention. They are a figure corresponding to the figure and a figure corresponding to FIG. In the figure, 1 is the main body case, 2 is the base part, 2a is the port, 2b is the first valve hole, 2c is the second valve hole,
3 is a cover part, 4 is a sealing member, 4a is a sealing part for preventing slippage, 5 is a valve chamber, 6a is a first valve body, 6b is a second valve body, 7 is a holding member, and 8 is a compression coil spring. (spring member), 9 indicates an operating rod (operating means).

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ポート及び互いに離間された第１、第２の弁孔
を有したベース部上にカバー部を被着して成る本
体ケースと、前記ポート及び第１、第２の弁孔を
覆つた状態で周縁部が前記ベース部及びカバー部
間に気密に挟持されそのベース部との間で弁室を
形成する可撓材料製のシール部材と、このシール
部材に前記第１、第２の弁孔と夫々対向するよう
に形成された第１、第２の弁体と、前記シール部
材を揺動可能に保持するように設けられその揺動
に応じて上記シール部材を第１の弁体により前記
第１の弁孔を閉鎖し且つ前記第２の弁孔を開放さ
せた第１の位置と前記第２の弁体により前記第２
の弁孔を閉鎖し且つ第１の弁孔を開放させた第２
の位置との間で往復動させる保持部材と、前記シ
ール部材を常時において前記第１の位置へ付勢す
るばね部材と、前記保持部材を前記ばね部材のば
ね力に抗して揺動させて前記シール部材を前記第
２の位置へ移動させる操作手段とを具備したこと
を特徴とする弁装置。 A main body case comprising a cover part attached to a base part having a port and first and second valve holes spaced apart from each other, and a peripheral edge covering the port and the first and second valve holes. a seal member made of a flexible material, the part being airtightly sandwiched between the base part and the cover part and forming a valve chamber with the base part; and the first and second valve holes in the seal member, respectively. First and second valve bodies are formed to face each other, and the sealing member is provided to be swingably held, and in response to the swinging, the sealing member is moved by the first valve body to the first valve body. The first position in which the valve hole is closed and the second valve hole is opened, and the second valve body is in the second position.
The second valve hole is closed and the first valve hole is opened.
a holding member that reciprocates between the first and second positions; a spring member that always biases the sealing member toward the first position; and a spring member that swings the holding member against the spring force of the spring member. A valve device comprising: operation means for moving the seal member to the second position.