JP2001227658A - Three-way valve - Google Patents
Three-way valveInfo
- Publication number
- JP2001227658A JP2001227658A JP2000037318A JP2000037318A JP2001227658A JP 2001227658 A JP2001227658 A JP 2001227658A JP 2000037318 A JP2000037318 A JP 2000037318A JP 2000037318 A JP2000037318 A JP 2000037318A JP 2001227658 A JP2001227658 A JP 2001227658A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- flow path
- open state
- output shaft
- valve box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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- Multiple-Way Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は三方弁に関し、詳し
くは、３つの流路を同時に連通する三方弁に係るもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-way valve, and more particularly, to a three-way valve that simultaneously connects three flow paths.
【０００２】[0002]
【従来の技術】従来の経路を切り替える機能を有する一
般的な管路構成は、図１０に示すように、第１の管５１
とその軸線に対して直交する軸線を持つ第２の管５２及
び第３の管５３とをＴ字形状の継手５４を介して接続
し、第２の管５２及び第３の管５３に開閉弁５５、５６
を介装し、第１の管５１に開閉弁５７を介装している。2. Description of the Related Art As shown in FIG. 10, a general pipe structure having a function of switching a path is a first pipe 51 shown in FIG.
And a second pipe 52 and a third pipe 53 having an axis perpendicular to the axis thereof are connected via a T-shaped joint 54, and an on-off valve is connected to the second pipe 52 and the third pipe 53. 55, 56
, And an open / close valve 57 is provided in the first pipe 51.
【０００３】経路の切り替えは、第１の管路５１の開閉
弁５７を開放した状態において、二つの開閉弁５５、５
６の何れかを選択的に開放するか、双方の開閉弁を開放
することにより行っている。この操作によって第１の管
５１と第２の管５２と第３の管５３において任意の方向
に流れる。[0003] The switching of the route is performed by opening and closing the two on-off valves 55, 5 and 5 in a state where the on-off valve 57 of the first pipeline 51 is opened.
6 is selectively opened or both on-off valves are opened. By this operation, the fluid flows in an arbitrary direction in the first pipe 51, the second pipe 52, and the third pipe 53.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記したよう
な従来の構成においては、継手５４の他に、第２及び第
３の管５２、５３のそれぞれに開閉弁５５、５６を介装
することが必要で、装置構成が複雑で、かつその操作が
煩雑となる。However, in the conventional structure as described above, the on-off valves 55 and 56 are interposed in the second and third pipes 52 and 53, respectively, in addition to the joint 54. Is required, the apparatus configuration is complicated, and the operation is complicated.
【０００５】上記した構成において継手５４に変えて三
方弁を使用する構成が考えられる。しかし、従来の三方
弁の多くは一つのポートを入力ポートとし、残り２二つ
のポートを出力ポートとしており、弁の開閉操作によっ
て２二つの出力ポートの何れかを選択するものであるた
めに、二つの出力ポートから同時に出力することができ
なかった。In the above-described configuration, a configuration using a three-way valve instead of the joint 54 is conceivable. However, most of the conventional three-way valves have one port as an input port and the remaining two ports as output ports, and select one of two output ports by opening and closing the valve. It was not possible to output from two output ports at the same time.
【０００６】本発明は上記した課題を解決するものであ
り、流体の流れを三状態に切換え可能な三方弁を提供す
ることを目的とする。An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a three-way valve capable of switching a fluid flow between three states.
【０００７】[0007]
【課題を解決するための手段】上記した課題を解決する
ために、請求項１に係る本発明の三方弁は、弁箱の弁室
内に弁棒の軸線廻りに回転する回転弁体を配置し、弁箱
内に第１の弁箱内流路と第１の弁箱内流路と直交する方
向において相対向する第２、第３弁箱内流路とをそれぞ
れ弁室に連通して形成し、回転弁体に各弁箱内流路に対
向する３つの開口を有する弁体内流路を設けてなり、回
転弁体の回転によって第１の弁箱内流路と第２の弁箱内
流路とを連通する第１開状態と、全ての弁箱内流路を連
通する第２開状態と、第１の弁箱内流路と第３の弁箱内
流路とを連通する第３開状態とに順次切換える構成とし
たものである。According to a first aspect of the present invention, there is provided a three-way valve in which a rotary valve element that rotates about an axis of a valve shaft is disposed in a valve chamber of a valve box. And a first valve box flow path and second and third valve box flow paths opposed to each other in a direction orthogonal to the first valve box flow path are respectively formed in the valve box so as to communicate with the valve chamber. The rotary valve body is provided with a valve body flow path having three openings opposed to the respective valve box flow paths, and the first valve box flow path and the second valve box flow path are formed by rotation of the rotary valve body. A first open state communicating with the flow path, a second open state communicating with all the flow paths in the valve box, and a second open state communicating with the first flow path in the valve box and the third flow path in the valve box. It is configured to sequentially switch to three open states.
【０００８】上記した構成により、第１、第２、第３の
弁箱内流路にそれぞれ管を接続した状態で、弁棒を介し
て回転弁体を回転操作することにより、第１の管と第２
の管を連通する第１開状態と、第１の管と第２の管及び
第３の管とを連通する第２開状態と、第１の管と第３の
管を連通する第３開状態とに順次選択的に切換える。し
たがって、継手や開閉弁を使用せずとも、単一の弁によ
って流体の流れを三状態に切換えることができる。[0008] With the above-described configuration, the first pipe is connected to the first, second, and third valve box flow paths, and the rotary valve body is rotated through the valve rod to form the first pipe. And the second
A first open state communicating the first pipe, a second open state communicating the first pipe with the second pipe and the third pipe, and a third open state communicating the first pipe with the third pipe. And the state. Therefore, the flow of fluid can be switched between three states by a single valve without using a joint or an on-off valve.
【０００９】また、請求項２に係る本発明の三方弁は、
弁棒に出力軸を連結して装着した回転操作用の減速機に
おいて、出力軸と一体成形したキャリアに出力軸の径方
向に突出する係合部を設け、キャリアを囲むケースに、
第１開状態で係合部を出力軸の径方向において受け止め
る第１ストッパーと、第３開状態で係合部を出力軸の径
方向において受け止める第２ストッパーとを設け、ケー
スの内側面に対向する係合部の外側面に凹部を設け、第
２開状態で凹部に対向するケースの所定位置に、凹部に
係合する球体を出力軸の径方向に出退自在に保持し、か
つ球体を凹部に向けて押圧する弾性体を有する開弁維持
手段を設けた構成としたものである。The three-way valve of the present invention according to claim 2 is:
In a reduction gear for rotational operation mounted on a valve stem connected to an output shaft, a carrier integrally formed with the output shaft is provided with an engaging portion projecting in a radial direction of the output shaft, and a case surrounding the carrier is provided.
A first stopper for receiving the engaging portion in the radial direction of the output shaft in the first open state and a second stopper for receiving the engaging portion in the radial direction of the output shaft in the third open state are provided to face the inner surface of the case. A concave portion is provided on the outer surface of the engaging portion to be engaged, and a sphere engaging with the concave portion is held at a predetermined position of the case facing the concave portion in the second open state so as to be able to move back and forth in the radial direction of the output shaft, and In this configuration, valve opening maintaining means having an elastic body pressed toward the recess is provided.
【００１０】上記した構成により、第１ストッパーでキ
ャリアの係合部を受け止めることで第１開状態を維持
し、第２ストッパーでキャリアの係合部を受け止めるこ
とで第３開状態を維持し、係合部の凹部に係合する球体
を弾性体の押圧力で押圧することで第２開状態を維持す
るので、三つの流体の流れ状態のいずれの状態において
も１００％の流路開度を確実に確保することができる。[0010] With the above structure, the first stopper is maintained in the first open state by receiving the engaging portion of the carrier, and the second stopper is maintained in the third open state by receiving the engaging portion of the carrier. Since the second open state is maintained by pressing the sphere engaged with the concave portion of the engagement portion with the pressing force of the elastic body, the flow path opening degree of 100% can be maintained in any of the three fluid flow states. It can be ensured reliably.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図１〜図５において、三方弁Ａ
は、溶接型の三方弁本体１０と操作機としての減速機２
０とを備えている。三方弁本体１０は、略Ｔ字形状の弁
箱１１と、単一の回転弁体１２と、この回転弁体１２を
回転操作するための弁棒１３とを備えており、弁棒１３
をその上端部において減速機２０の出力軸２１に連結し
ている。Embodiments of the present invention will be described below with reference to the drawings. 1 to 5, a three-way valve A
Is a welded three-way valve body 10 and a speed reducer 2 as an operating device.
0. The three-way valve body 10 includes a substantially T-shaped valve box 11, a single rotary valve element 12, and a valve rod 13 for rotating the rotary valve element 12.
At its upper end is connected to the output shaft 21 of the speed reducer 20.
【００１２】溶接型の弁箱１１は、第１の管５１に接続
する第１の弁箱内流路１４Ａと、第１の管５１の軸線に
直交する軸線において相対向する第２、第３の管５２、
５３に接続する第２、第３の弁箱内流路１４Ｂ、１４Ｃ
と、これら三つの弁箱内流路１４Ａ、１４Ｂ、１４Ｃを
連通する弁室１５とを有し、弁室１５から弁箱内流路１
４Ｂ、１４Ｃへの開口部にはそれぞれ弁箱シート１６
Ｂ、１６Ｃを設けている。The welded valve box 11 includes a first and a second valve box passage 14A connected to the first pipe 51, and a second and a third pipes opposing each other on an axis perpendicular to the axis of the first pipe 51. Tube 52,
53, second and third valve box flow paths 14B, 14C
And a valve chamber 15 communicating these three valve box flow paths 14A, 14B, and 14C.
The opening to 4B and 14C has a valve box sheet 16 respectively.
B and 16C are provided.
【００１３】回転弁体１２は、内部に形成した弁体内流
路１７の三つの開口部１８Ａ、１８Ｂ、１８Ｃのそれぞ
れが弁箱１１の三つの弁箱内流路１４Ａ、１４Ｂ、１４
Ｃに対応し、閉塞部１８Ｄに弁箱側シート１６Ｂ、１６
Ｃに摺接可能な弁体シート１９を備えている。回転弁体
１２は三つの開口部１８Ａ、１８Ｂ、１８Ｃの軸線の交
点上に位置する中心軸周りに回転可能に弁箱１１の弁室
１５内に収納しており、弁棒１３の回転によって０〜１
８０°の範囲に亘って回転操作可能である。The rotary valve body 12 has three openings 18A, 18B, and 18C of a valve body flow path 17 formed therein, each having three valve body flow paths 14A, 14B, and 14 of the valve box 11.
C, the valve box side sheets 16B, 16
A valve body sheet 19 that can slide on C is provided. The rotary valve body 12 is housed in the valve chamber 15 of the valve box 11 so as to be rotatable around a central axis located on the intersection of the axes of the three openings 18A, 18B, 18C. ~ 1
Rotational operation is possible over a range of 80 °.
【００１４】上記の構成の三方弁本体１０においては、
弁棒１３を介して回転弁体１２を０〜１８０°の範囲で
回転操作することにより、図３の（ａ）、（ｂ）で示す
ように、第１の弁箱内流路１４Ａと第２の弁箱内流路１
４Ｂとを連通する第１開状態と、図４の（ａ）、（ｂ）
で示すように、第１の弁箱内流路１４Ａと第２の弁箱内
流路１４Ｂ及び第３の弁箱内流路１４Ｃとを連通する第
２開状態と、図５の（ａ）、（ｂ）で示すように、第１
の弁箱内流路１４Ａと第３の弁箱内流路１４Ｃとを連通
する第３開状態とに順次切換え可能である。In the three-way valve body 10 having the above configuration,
By rotating the rotary valve body 12 through the valve rod 13 in the range of 0 to 180 °, as shown in FIGS. 3A and 3B, the first valve box flow path 14A and the Flow path 1 in valve box 2
4B, and a first open state communicating with the second opening 4B, and (a) and (b) of FIG.
As shown in FIG. 5A, a second open state in which the first valve box flow path 14A communicates with the second valve box flow path 14B and the third valve box flow path 14C. , (B), the first
Can be sequentially switched to a third open state in which the valve body flow path 14A and the third valve case flow path 14C communicate with each other.
【００１５】一方、減速機２０は、図６に示すように、
ケース２２の上下位置に操作入力軸２３及び出力軸２１
を同軸心状に配置し、ケース２２の内部に両軸２１、２
３を連動するための第１遊星ギヤ２４ａ、内歯ギヤ２４
ｂ、サンギヤ２４ｃ、第２遊星ギヤ２４ｄなどからなる
減速機構２５を収納しており、出力軸２１を弁棒１３の
上端部に連結している。On the other hand, as shown in FIG.
The operation input shaft 23 and the output shaft 21
Are arranged coaxially, and the two shafts 21, 2
3 and a first planetary gear 24a and an internal gear 24
b, a sun gear 24c, a second planetary gear 24d, and the like. A reduction mechanism 25 is housed therein, and the output shaft 21 is connected to the upper end of the valve rod 13.
【００１６】図７に示すように、減速機２０の出力軸２
１と一体成形したキャリア２６には、径外方へ突出する
係合部２７を形成している。ケース２２には、回転弁体
１２が図３に示す第１開状態にあるとき（０°の回転位
置）、及び回転弁体１２が図５に示す第３開状態にある
とき（１８０°の回転位置）に、係合部２７の回転方向
両端面２７ａ、２７ｂに当接して回転弁体１２の回転位
置を規制するボルトからなるストッパー部材２９ａ、２
９ｂを螺合装着している。As shown in FIG. 7, the output shaft 2 of the speed reducer 20
An engaging portion 27 protruding radially outward is formed on the carrier 26 integrally formed with the carrier 1. In the case 22, the rotary valve element 12 is in the first open state shown in FIG. 3 (0 ° rotation position) and the rotary valve element 12 is in the third open state shown in FIG. (Rotational position), stopper members 29a, 2 made of bolts abutting against both end surfaces 27a, 27b in the rotational direction of the engaging portion 27 to regulate the rotational position of the rotary valve body 12.
9b is screwed.
【００１７】また、キャリア２６と減速機２０のケース
２２との間には、回転弁体１２が図４に示す第２開状態
に切換えられたとき（９０°の回転位置）に、回転弁体
１２を第２開状態に維持する開弁維持機構３０を設けて
いる。この開弁維持機構３０は、図８に示すように、キ
ャリア２６の係合部２７の外周面で回転方向の中央部に
形成した円錐形状の凹部３１と、ケース２２に出力軸２
１の径方向へ出入調整可能に螺合装着したボールプラン
ジャ３２とからなり、ボールプランジャ３２に収納した
圧縮コイルバネ（または皿バネ）３３によって鋼球３４
を円錐状の凹部３１に押圧する。Further, between the carrier 26 and the case 22 of the speed reducer 20, when the rotary valve body 12 is switched to the second open state shown in FIG. A valve opening maintaining mechanism 30 for maintaining the valve 12 in the second open state is provided. As shown in FIG. 8, the valve opening maintaining mechanism 30 includes a conical concave portion 31 formed at the center in the rotation direction on the outer peripheral surface of the engaging portion 27 of the carrier 26, and the output shaft 2
1 and a ball plunger 32 screwed into the ball plunger 32 so as to be adjustable in and out in the radial direction. The steel ball 34 is formed by a compression coil spring (or disc spring) 33 housed in the ball plunger 32.
Is pressed against the conical recess 31.
【００１８】以下、上記した構成における作用を説明す
る。三方弁Ａは、図９に示すように、第１、第２、第３
の弁箱内流路１４Ａ、１４Ｂ、１４Ｃにそれぞれ第１、
第２、第３の管５１、５２、５３を溶接により接続した
配管状態で用いられる。弁操作は、操作入力軸２３を人
力もしくは機械力で回転駆動し、減速機２０及び弁棒１
３を介して回転弁体１２を０〜１８０°の範囲で回転操
作することにより、３つの開状態に順次選択的に切換え
て所定の三方弁機能を達成する。The operation of the above configuration will be described below. As shown in FIG. 9, the three-way valve A includes first, second, third
The first and second passages 14A, 14B, and 14C in the valve box, respectively,
It is used in a pipe state where the second and third pipes 51, 52, 53 are connected by welding. For the valve operation, the operation input shaft 23 is rotationally driven by human power or mechanical power, and the speed reducer 20 and the valve stem 1 are rotated.
By rotating the rotary valve body 12 in the range of 0 to 180 ° via the switch 3, the three open states are selectively switched to achieve a predetermined three-way valve function.
【００１９】第１開状態では、図３に示すように、第１
のストッパー部材２９ａでキャリア２６の係合部２７を
受け止めて、第１の弁箱内流路１４Ａに接続した第１の
管５１と第２の弁箱内流路１４Ｂに接続した第２の管５
２とが連通する。In the first open state, as shown in FIG.
The first pipe 51 connected to the first valve box flow path 14A and the second pipe connected to the second valve box flow path 14B by receiving the engaging portion 27 of the carrier 26 with the stopper member 29a. 5
2 communicates.
【００２０】第２開状態では、図４に示すように、減速
機２０側のキャリア２６とケース２２との間に設けた開
弁維持機構３０の鋼球３４が圧縮コイルバネ（または皿
バネ）３３の押圧力によって円錐状の凹部３１に係合し
（図７参照）、回転弁体１２が振動などにより不測に動
くことを規制して、第１の管５１と第２の管５２及び第
３の管５３とを連通する。In the second open state, as shown in FIG. 4, the steel ball 34 of the valve opening maintaining mechanism 30 provided between the carrier 26 on the side of the speed reducer 20 and the case 22 holds the compression coil spring (or disc spring) 33. Engages with the conical concave portion 31 by the pressing force (see FIG. 7), restricts the rotary valve body 12 from unexpectedly moving due to vibration or the like, and prevents the first pipe 51, the second pipe 52 and the third pipe 51 from rotating. With the tube 53.
【００２１】第３開状態では、図５に示すように、第２
のストッパー部材２９ｂでキャリア２６の係合部２７を
受け止めて、第１の管５１と第３の管５３とを連通す
る。このことにより、三つの開状態のいずれにおいても
１００％の流路開度を確実に確保することができる。In the third open state, as shown in FIG.
The first pipe 51 and the third pipe 53 are communicated with each other by receiving the engagement portion 27 of the carrier 26 with the stopper member 29b. This ensures a 100% flow path opening in any of the three open states.
【００２２】[0022]
【発明の効果】以上のように本発明によれば、継手や複
数の開閉弁を使用しないで、単一の三方弁を使用して流
体の流れを三つの状態に切換えて所定の三方弁機能を確
実に達成することができ、複数の開閉弁の開閉を組み合
わせる従来の場合に比べて、弁操作が非常に容易である
とともに、流体の流れの切換えも迅速に行える。また、
三つの状態のいずれに切換えた場合でも、回転弁体の振
動等による不測の動きを規制して常に所定の流体の流れ
状態を確実に保持することができる。As described above, according to the present invention, by using a single three-way valve to switch the fluid flow to three states without using a joint or a plurality of on-off valves, a predetermined three-way valve function is achieved. Can be reliably achieved, the valve operation is very easy, and the flow of the fluid can be quickly switched as compared with the conventional case in which the opening and closing of a plurality of on-off valves are combined. Also,
In any of the three states, unexpected movement due to vibration of the rotary valve body or the like can be restricted to always maintain a predetermined fluid flow state.
【図１】本発明の実施の形態における三方弁の一部破断
側面図である。FIG. 1 is a partially cutaway side view of a three-way valve according to an embodiment of the present invention.
【図２】同三方弁の外観正面図である。FIG. 2 is an external front view of the three-way valve.
【図３】（ａ）、（ｂ）は同三方弁における弁体の第１
開状態の横断面図とその概略図である。FIGS. 3 (a) and 3 (b) show a first example of a valve element in the three-way valve.
It is a cross-sectional view of an open state and its schematic diagram.
【図４】（ａ）、（ｂ）は同三方弁における弁体の第２
開状態の横断面図とその概略図である。FIGS. 4A and 4B show a second example of a valve body of the three-way valve;
It is a cross-sectional view of an open state and its schematic diagram.
【図５】（ａ）、（ｂ）は同三方弁における弁体の第３
開状態の横断面図とその概略図である。FIGS. 5 (a) and 5 (b) show a third example of a valve element in the three-way valve.
It is a cross-sectional view of an open state and its schematic diagram.
【図６】同三方弁における減速機の構成を説明する一部
破断側面図である。FIG. 6 is a partially cutaway side view illustrating a configuration of a speed reducer in the same three-way valve.
【図７】図６のＡ−Ａ線に沿った断面図である。FIG. 7 is a sectional view taken along line AA of FIG. 6;
【図８】図７のＢ部の拡大図である。FIG. 8 is an enlarged view of a portion B in FIG. 7;
【図９】同三方弁の使用状態を説明する概略配管図であ
る。FIG. 9 is a schematic piping diagram for explaining a use state of the three-way valve.
【図１０】従来の三方弁機能を実現するための概略配管
図である。FIG. 10 is a schematic piping diagram for realizing a conventional three-way valve function.
Ａ 三方弁Ａ １０ 三方弁本体 １１ 弁箱 １２ 回転弁体 １３ 弁棒 １４Ａ、１４Ｂ、１４Ｃ 弁箱内流路 １５ 弁室 １７ 弁体内流路 １８Ａ、１８Ｂ、１８Ｃ 開口部 ２０ 減速機 ２１ 出力軸 ２２ ケース ２６ キャリア ２７ 係合部 ２９ａ、２９ｂ ストッパー部材 ３０ 開弁維持機構 ３１ 凹部 ３２ ボールプランジャ ３３ 圧縮コイルバネ（または皿バネ） ３４ 鋼球 A Three-way valve A 10 Three-way valve body 11 Valve box 12 Rotating valve body 13 Valve rod 14A, 14B, 14C Flow path in valve box 15 Valve chamber 17 Flow path in valve 18A, 18B, 18C Opening 20 Reduction gear 21 Output shaft 22 Case 26 Carrier 27 Engagement part 29a, 29b Stopper member 30 Valve opening maintaining mechanism 31 Depression 32 Ball plunger 33 Compression coil spring (or disc spring) 34 Steel ball
Claims (2)
る回転弁体を配置し、弁箱内に第１の弁箱内流路と第１
の弁箱内流路と直交する方向において相対向する第２、
第３弁箱内流路とをそれぞれ弁室に連通して形成し、回
転弁体に各弁箱内流路に対向する３つの開口を有する弁
体内流路を設けてなり、回転弁体の回転によって第１の
弁箱内流路と第２の弁箱内流路とを連通する第１開状態
と、全ての弁箱内流路を連通する第２開状態と、第１の
弁箱内流路と第３の弁箱内流路とを連通する第３開状態
とに順次切換えることを特徴とする三方弁。A rotary valve body which rotates around an axis of a valve rod is disposed in a valve chamber of a valve box, and a first valve box flow path and a first valve box flow path are provided in the valve box.
The second opposing in the direction orthogonal to the flow path in the valve box of the second,
The third valve box flow path is formed in communication with the valve chamber, and the rotary valve body is provided with a valve body flow path having three openings facing the respective valve box flow paths. A first open state in which the first internal flow path and the second internal flow path are communicated by rotation, a second open state in which all the internal flow paths are communicated, A three-way valve which is sequentially switched to a third open state in which the inner flow path and the third valve box inner flow path are communicated.
作用の減速機において、出力軸と一体成形したキャリア
に出力軸の径方向に突出する係合部を設け、キャリアを
囲むケースに、第１開状態で係合部を出力軸の径方向に
おいて受け止める第１ストッパーと、第３開状態で係合
部を出力軸の径方向において受け止める第２ストッパー
とを設け、ケースの内側面に対向する係合部の外側面に
凹部を設け、第２開状態で凹部に対向するケースの所定
位置に、凹部に係合する球体を出力軸の径方向に出退自
在に保持し、かつ球体を凹部に向けて押圧する弾性体を
有する開弁維持手段を設けたことを特徴とする請求項１
に記載の三方弁。2. A reduction gear for rotation operation in which an output shaft is connected to a valve stem and mounted thereon, wherein a carrier integrally formed with the output shaft is provided with an engaging portion projecting in a radial direction of the output shaft to surround the carrier. A first stopper for receiving the engaging portion in the radial direction of the output shaft in the first open state, and a second stopper for receiving the engaging portion in the radial direction of the output shaft in the third open state; A concave portion is provided on the outer surface of the engaging portion facing the concave portion, and a sphere engaging with the concave portion is held at a predetermined position of the case facing the concave portion in the second open state so as to be able to move back and forth in the radial direction of the output shaft, and 2. A valve opening maintaining means having an elastic body for pressing a sphere toward a concave portion is provided.
The three-way valve according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000037318A JP2001227658A (en) | 2000-02-16 | 2000-02-16 | Three-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000037318A JP2001227658A (en) | 2000-02-16 | 2000-02-16 | Three-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001227658A true JP2001227658A (en) | 2001-08-24 |
Family
ID=18561221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000037318A Withdrawn JP2001227658A (en) | 2000-02-16 | 2000-02-16 | Three-way valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001227658A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003120854A (en) * | 2001-10-12 | 2003-04-23 | Kubota Corp | Opening display structure for three-way valve |
| JP2008261276A (en) * | 2007-04-11 | 2008-10-30 | Kawamoto Pump Mfg Co Ltd | Water supply device |
-
2000
- 2000-02-16 JP JP2000037318A patent/JP2001227658A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003120854A (en) * | 2001-10-12 | 2003-04-23 | Kubota Corp | Opening display structure for three-way valve |
| JP2008261276A (en) * | 2007-04-11 | 2008-10-30 | Kawamoto Pump Mfg Co Ltd | Water supply device |
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|
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