JPH0438924B2 - - Google Patents
Info
- Publication number
- JPH0438924B2 JPH0438924B2 JP26705186A JP26705186A JPH0438924B2 JP H0438924 B2 JPH0438924 B2 JP H0438924B2 JP 26705186 A JP26705186 A JP 26705186A JP 26705186 A JP26705186 A JP 26705186A JP H0438924 B2 JPH0438924 B2 JP H0438924B2
- Authority
- JP
- Japan
- Prior art keywords
- spring
- motor shaft
- elastic force
- valve
- rotation transmission
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 25
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 description 24
- 230000000694 effects Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Servomotors (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電気パルスモータを用いて弁部材の
軸方向への移動位置制御を行い流体制御し得るデ
ジタル弁に関し、特に電気パルスモータの正逆回
転するモータ軸の中立位置設定装置を備えたデジ
タル弁に関するものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a digital valve that can control the movement position of a valve member in the axial direction using an electric pulse motor to control fluid, and in particular, This invention relates to a digital valve equipped with a neutral position setting device for a motor shaft that rotates in reverse.
従来、この種のデジタル弁は、実開昭61−
19105号公報に示される如き構成が知られており、
電気パルスモータのモータ軸に外嵌したねじりコ
イルばねの両端部アームを弁本体側に設けた２個
の固定ピン部材にそれぞれ係合配置し、このねじ
りコイルばねの両端部アームへモータ軸側に設け
た２個の可動ピン部材をそれぞれ係合させるよう
にして、ねじりコイルばねの取付け弾性力により
モータ軸を所望の中立位置へ設定可能にし得ると
共に、モータ軸の中立位置からの回転に応じて可
動ピン部材によりねじりコイルばねをねじること
により復帰作用の弾性力が得られるよう設けてい
る。
Conventionally, this type of digital valve was developed in 1988.
A configuration as shown in Publication No. 19105 is known,
Both end arms of a torsion coil spring fitted externally on the motor shaft of the electric pulse motor are engaged with two fixing pin members provided on the valve body side, and the end arms of the torsion coil spring are connected to the motor shaft side. By engaging the two provided movable pin members, the motor shaft can be set to a desired neutral position by the mounting elastic force of the torsion coil spring, and the motor shaft can be set to a desired neutral position according to the rotation of the motor shaft from the neutral position. The movable pin member is provided so that elastic force for return action can be obtained by twisting the torsion coil spring.
ところが、モータ軸の中立位置の設定をねじり
コイルばねの両端部アームと係合する２個の可動
ピン部材及び固定ピン部材によつて得ているた
め、可動と固定の各ピン部材の配置を同一になる
よう設けなければ中立位置への設定におけるモー
タ軸に遊びが生じてしまい、モータ軸の中立位置
への正確な設定保持が得られにくい問題点があつ
た。
However, since the neutral position of the motor shaft is set by two movable pin members and a fixed pin member that engage with the arms at both ends of the torsion coil spring, the positions of the movable and fixed pin members are the same. Otherwise, there would be play in the motor shaft when setting it to the neutral position, and there would be a problem that it would be difficult to maintain the accurate setting of the motor shaft at the neutral position.
本発明は、かかる問題点を解消するもので、２
個のばねの弾性力を対向作用させてモータ軸の中
立位置を設定し、モータ軸の中立位置への正確な
設定保持が得られて電気パルス信号に対する弁部
材の位置制御の精度を向上できるようにしたデジ
タル弁を提供するものである。 The present invention solves these problems, and has two
The neutral position of the motor shaft is set by applying the elastic forces of the two springs in opposition to each other, and the accurate setting and maintenance of the motor shaft at the neutral position can be obtained, thereby improving the accuracy of position control of the valve member in response to electric pulse signals. The company provides a digital valve with a built-in digital valve.
〔問題点を解決するための手段〕
このため本発明は、弁本体へ嵌挿して軸方向へ
の移動により流体制御を行う弁部材と、弾性力を
弁部材へ付与して弁部材の一方向への移動を復帰
作用する第１ばねと、電気パルス信号に応じて正
逆回転する電気パルスモータと、電気パルスモー
タのモータ軸と連結してモータ軸の回転に応じて
弁部材を軸方向への目標位置に移動する変位部材
と、モータ軸の一方向への回転時のみにモータ軸
と一体回転可能に設けた回転伝達部材と、弾性力
を回転伝達部材に付与して回転伝達部材の一方向
への回転を復帰作用する第２ばねとを備え、第１
ばねの弾性力に起因して変位部材に回転力が発生
するよう弁部材と変位部材を偏心係合して配設
し、第１ばねと第２ばねの弾性力に起因する回転
力をモータ軸に対向作用させると共に第１ばねに
よる回転力よりも第２ばねによる回転力を大きく
設け、第２ばねの弾性力による回転伝達部材の回
転を停止可能に設けている。[Means for Solving the Problems] For this reason, the present invention provides a valve member that is fitted into a valve body and controls fluid by moving in the axial direction, and a valve member that applies elastic force to the valve member to move the valve member in one direction. an electric pulse motor that rotates forward and backward in response to an electric pulse signal; and a first spring that is connected to the motor shaft of the electric pulse motor to move the valve member in the axial direction according to the rotation of the motor shaft. a displacement member that moves to a target position; a rotation transmission member that is provided to be able to rotate integrally with the motor shaft only when the motor shaft rotates in one direction; a second spring for restoring the rotation in the first direction;
The valve member and the displacement member are arranged in eccentric engagement so that rotational force is generated in the displacement member due to the elastic force of the spring, and the rotational force due to the elastic force of the first spring and the second spring is transferred to the motor shaft. The rotational force of the second spring is made larger than the rotational force of the first spring, and the rotation of the rotation transmission member due to the elastic force of the second spring can be stopped.
かかる本発明の構成において、弁部材に付与す
る第１ばねの弾性力と回転伝達部材に付与する第
２ばねの弾性力に起因してモータ軸に回転力を対
向作用しており、モータ軸の中立位置での遊びを
実質的に零にできてモータ軸の中立位置への正確
な設定保持が容易に得られ、電気パルス信号に対
する弁部材の位置制御の精度を向上することがで
きる。
In such a structure of the present invention, a rotational force is applied to the motor shaft in opposition due to the elastic force of the first spring applied to the valve member and the elastic force of the second spring applied to the rotation transmission member. Since the play at the neutral position can be made substantially zero, the motor shaft can be easily set and maintained accurately at the neutral position, and the accuracy of position control of the valve member in response to electric pulse signals can be improved.
以下、本発明の一実施例を図面に基づいて説明
する。
Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図において、１は弁本体で、圧力流体を供
給する供給流路Ｐと流体アクチユエータ側へ接続
する一対の負荷流路Ａ，Ｂと低圧側へ接続する排
出流路Ｒとを有し、この各流路と連通し内部に穿
設した嵌合孔２に弁部材３を摺動可能に嵌挿して
いる。弁部材３は軸方向への移動により各流路
Ｐ，Ａ，Ｂ，Ｒ間を連通遮断して流体の流れ方向
を切換制御できるよう設けている。４は弁部材３
の一方向への移動を復帰作用させるための第１ば
ねで、弁部材３に外嵌して図示左方向への弾性力
をばね受け部材５を介し弁部材３に付与するよう
設けている。６は弁部材３の回り止めをするため
のピン部材、７はローラ部材で、弁部材３の端部
にその外周部分を弁部材端面より突出させて回転
可能に軸架している。８はモータ軸の中立位置設
定装置を示し、９は電気パルス信号に応じて正逆
回転する電気パルスモータ、１０は電気パルスモ
ータ９のモータ軸１１と連結の出力軸で、弁部材
３のローラ部材７を有する側の外方に弁部材３の
軸芯と直角にベアリング部材１３，１４を介し装
置本体１２へ回転可能に軸架して設けている。１
５はカム形状の変位部材で、弁部材３のローラ部
材７と当接係合するよう出力軸１０に一体的に取
付けており、変位部材１５は弁部材３に付与する
第１ばね４の弾性力を受け図示上方向から見て反
時計方向（矢印Ｆ）の回転力が発生するよう第２
図に示す如くローラ部材７の外周面と接点Ｙで当
接係合させて設けている。１７は出力軸１０にベ
アリング部材を介し回転可能に外嵌した回転伝達
部材で、出力軸１０が図示上方向から見て反時計
方向へ回転されたときピン部材１６との係合によ
り出力軸１０と一体回転すると共に、出力軸１０
が時計方向へ回転されたときは相対回転可能に設
けている。回転伝達部材１７には第３図に示す如
くその外周部に偏心配設したベアリング部材１８
の外周面にその半径方向からピストン部材１９を
介し第２ばね２０の弾性力を付与して前記第１ば
ね４の弾性力に起因して出力軸１０に発生するＦ
方向の回転力と対向作用する矢印F′方向の回転力
が発生するよう設けている。そして、各ばねの弾
性力に起因してモータ軸１１に発生する回転力は
第１ばね４より第２ばね２０の方が強くなるよう
設けている。２１は装置本体１２に螺合した停止
部材で、第４図に示す如く回転伝達部材１７の軸
部に半径方向へ突出した突出部２２と当接して前
記第２ばね２０の弾性力に起因する回転伝達部材
１７のF′方向の回転を停止可能に設けている。な
お、停止部材２１は装置本体１２を成す部材へ一
体形成するようにしても良い。 In FIG. 1, 1 is a valve body, which has a supply flow path P for supplying pressure fluid, a pair of load flow paths A and B connected to the fluid actuator side, and a discharge flow path R connected to the low pressure side, A valve member 3 is slidably fitted into a fitting hole 2 bored inside and communicating with each flow path. The valve member 3 is provided so as to be able to switch and control the flow direction of the fluid by blocking communication between the flow paths P, A, B, and R by moving in the axial direction. 4 is the valve member 3
This is a first spring for restoring movement in one direction, and is provided so as to be fitted onto the valve member 3 so as to apply elastic force to the valve member 3 in the left direction in the figure via the spring receiving member 5. Reference numeral 6 indicates a pin member for preventing rotation of the valve member 3, and reference numeral 7 indicates a roller member, which is rotatably mounted on an axis at the end of the valve member 3 with its outer peripheral portion protruding from the end face of the valve member. Reference numeral 8 indicates a neutral position setting device for the motor shaft, reference numeral 9 indicates an electric pulse motor that rotates in forward and reverse directions according to electric pulse signals, and reference numeral 10 indicates an output shaft connected to the motor shaft 11 of the electric pulse motor 9, which is connected to the roller of the valve member 3. It is rotatably mounted to the device main body 12 through bearing members 13 and 14 at a right angle to the axis of the valve member 3 on the outside of the side having the member 7. 1
5 is a cam-shaped displacement member, which is integrally attached to the output shaft 10 so as to abut and engage with the roller member 7 of the valve member 3; The second one is designed to receive the force and generate a rotational force in the counterclockwise direction (arrow F) when viewed from above in the figure.
As shown in the figure, it is provided so as to abut and engage with the outer circumferential surface of the roller member 7 at a contact point Y. Reference numeral 17 denotes a rotation transmission member which is rotatably fitted onto the output shaft 10 through a bearing member, and when the output shaft 10 is rotated counterclockwise when viewed from above in the figure, the output shaft 10 is rotated by engagement with the pin member 16. The output shaft 10 rotates integrally with the output shaft 10.
It is provided so that it can be relatively rotated when it is rotated clockwise. The rotation transmission member 17 has a bearing member 18 eccentrically installed on its outer periphery as shown in FIG.
The elastic force of the second spring 20 is applied to the outer circumferential surface of the output shaft 10 from the radial direction via the piston member 19 to reduce the F generated on the output shaft 10 due to the elastic force of the first spring 4.
It is provided so that a rotational force in the direction of arrow F' that acts opposite to the rotational force in the direction is generated. The second spring 20 is provided so that the rotational force generated on the motor shaft 11 due to the elastic force of each spring is stronger than that of the first spring 4. Reference numeral 21 denotes a stop member screwed onto the main body 12 of the apparatus, and as shown in FIG. The rotation of the rotation transmission member 17 in the F' direction can be stopped. Note that the stop member 21 may be integrally formed with a member constituting the device main body 12.
次にかかる構成の作動を説明する。 Next, the operation of this configuration will be explained.
第１図ないし第４図は、電気パルスモータ９の
非操作時で、モータ軸１１は第１ばね４と第２ば
ね２０との弾性力に起因する対向作用の回転力を
受けて停止部材２１による回転伝達部材１７の停
止位置即ち中立位置へ設定保持されている。そし
て、弁部材３は各流路Ｐ，Ａ，Ｂ，Ｒ間を遮断し
ている。いま、この状態より、電気パルスモータ
９に電気パルス信号を印加してモータ軸１１を図
示上方向から見て時計方向へ回転操作すると、出
力軸１０の同方向への回転に伴い変位部材１５が
ローラ部材７を介し弁部材３を第１ばね４に抗し
て図示右方向の目標位置へ押圧移動せしめ、弁部
材３は各流路間を切換連通して流体制御する。こ
のとき、回転伝達部材１７はピン部材１６が係合
状態を解く方向へ回転されるため停止部材２１に
より停止された位置のままである。 1 to 4 show a state in which the electric pulse motor 9 is not operated, and the motor shaft 11 receives the rotational force of the opposing action caused by the elastic force of the first spring 4 and the second spring 20, and the stop member 21 The rotation transmitting member 17 is set and held at the stop position, that is, the neutral position. The valve member 3 blocks off the flow paths P, A, B, and R. Now, from this state, when an electric pulse signal is applied to the electric pulse motor 9 and the motor shaft 11 is rotated clockwise when viewed from above in the drawing, the displacement member 15 is rotated as the output shaft 10 rotates in the same direction. The valve member 3 is pressed and moved to a target position in the right direction in the figure through the roller member 7 against the first spring 4, and the valve member 3 switches and communicates the flow paths to control the fluid. At this time, the rotation transmission member 17 remains at the position stopped by the stop member 21 because the pin member 16 is rotated in the direction in which the engagement state is released.
次に、電気パルスモータ９への印加信号を断つ
と、第１ばね４の弾性力により弁部材３が原位置
に復帰移動されると共に変位部材１５に回転力が
発生されて出力軸１０はピン部材１６が回転伝達
部材１７と係合する原位置まで復帰回転し、モー
タ軸１１は中立位置へ設定保持される。 Next, when the applied signal to the electric pulse motor 9 is cut off, the elastic force of the first spring 4 causes the valve member 3 to move back to its original position, and rotational force is generated in the displacement member 15, so that the output shaft 10 is pinned. The member 16 rotates back to its original position where it engages with the rotation transmitting member 17, and the motor shaft 11 is set and held at the neutral position.
また、図示状態より、電気パルスモータ９に電
気パルス信号を印加してモータ軸１１を図示上方
向から見て反時計方向へ回転操作すると、出力軸
１０の同方向への回転に伴い、第１ばね４の弾性
力により弁部材３が変位部材１５のカム形状に沿
つて図示左方向への目標位置に移動されて各流路
Ｐ，Ａ，Ｂ，Ｒ間の流体制御を行い、回転伝達部
材１７はピン部材１６との係合により出力軸１０
と一体的に第２ばね２０の弾性力に起因する回転
力に抗して回転される。このとき、回転伝達部材
１７の突出部２２は停止部材２１との係合が解か
れる方向へ回転する。次に、電気パルスモータ９
への印加信号を断つと、第２ばね２０による回転
力により回転伝達部材１７はピン部材１６を介し
出力軸１０をともなつて突出部２２が停止部材２
１と係合する原位置まで復帰回転される。出力軸
１０の復帰回転により変位部材１５を介し弁部材
３は第１ばね４に抗して原位置へ復帰移動され、
モータ軸１１は中立位置へ設定保持される。 Further, from the illustrated state, when an electric pulse signal is applied to the electric pulse motor 9 and the motor shaft 11 is rotated counterclockwise when viewed from above in the figure, as the output shaft 10 rotates in the same direction, the first Due to the elastic force of the spring 4, the valve member 3 is moved along the cam shape of the displacement member 15 to a target position in the left direction in the figure, and performs fluid control between the flow paths P, A, B, and R, and rotates the rotation transmitting member. 17 is the output shaft 10 by engagement with the pin member 16.
The second spring 20 is rotated integrally against the rotational force caused by the elastic force of the second spring 20. At this time, the protrusion 22 of the rotation transmission member 17 rotates in a direction in which it is disengaged from the stop member 21. Next, the electric pulse motor 9
When the applied signal is cut off, the rotation force of the second spring 20 causes the rotation transmission member 17 to move along with the output shaft 10 via the pin member 16, and the protrusion 22 moves to the stop member 2.
It is rotated back to the original position where it engages with 1. Due to the return rotation of the output shaft 10, the valve member 3 is returned to its original position via the displacement member 15 against the first spring 4,
The motor shaft 11 is set and held at a neutral position.
この作動において、電気パルスモータ９のモー
タ軸１１の中立位置への設定を得るのに、回転伝
達部材１７の第２ばね２０の弾性力による回転を
停止して設けた位置へモータ軸１１を第１ばね４
と第２ばね２０による対向作用の回転力により回
転して停止させることで行つているため、各構成
部材の加工や組付けの誤差に影響されることなく
モータ軸１１の中立位置での遊びを実質的に零に
でき、モータ軸１１の中立位置への正確な設定保
持が容易に得られて電気パルス信号に対する弁部
材３の位置制御の精度を向上することができる。
また、停止部材２１と突出部２２との当接位置を
変えて設けることにより回転伝達部材１７の回転
停止位置が変わり、モータ軸１１の中立位置を所
望位置へ正確に設定することができる。 In this operation, in order to set the motor shaft 11 of the electric pulse motor 9 to the neutral position, the motor shaft 11 is moved to the set position by stopping the rotation due to the elastic force of the second spring 20 of the rotation transmission member 17. 1 spring 4
Since this is done by rotating and stopping by the rotational force of the opposing action of the second spring 20, the play in the neutral position of the motor shaft 11 is not affected by errors in machining or assembly of each component. It is possible to make it substantially zero, and it is possible to easily maintain the accurate setting of the motor shaft 11 at the neutral position, thereby improving the accuracy of position control of the valve member 3 in response to the electric pulse signal.
Further, by providing the stop member 21 and the protrusion 22 at different contact positions, the rotation stop position of the rotation transmission member 17 is changed, and the neutral position of the motor shaft 11 can be accurately set to a desired position.
第５図及び第６図は本発明の他実施例を示し、
一実施例と同部材には同符号を付して異なる点に
ついてのみ説明する。 5 and 6 show other embodiments of the present invention,
The same members as in the first embodiment are given the same reference numerals, and only different points will be explained.
出力軸１０にこの出力軸の一方向への回転時の
み一体回転可能に外嵌した回転伝達部材２３は、
円板状に形成した鍔部２４の外周部側面にピン部
材２５を突出配設している。２６は回転伝達部材
２３に復帰作用の回転力を付与する第２ばねとし
てのねじりコイルばねで、一端部アームを回転伝
達部材２３のピン部材２５に他端部アームを装置
１２側に有したピン部材２７にそれぞれ係合して
弁部材３に付与する第１ばね４の弾性力に起因し
て出力軸１０に発生するＦ方向の回転力と対向作
用するF″方向の回転力が回転伝達部材２３に付
与するよう設けている。そして、回転伝達部材２
３は装置本体１２側に設けた停止部材２８にピン
部材２５が係合することでねじりコイルばね２６
によるF″方向の回転を停止可能にしている。 The rotation transmission member 23 is externally fitted onto the output shaft 10 so that it can rotate integrally only when the output shaft rotates in one direction.
A pin member 25 is provided to protrude from the outer circumferential side surface of the disc-shaped flange 24. Reference numeral 26 denotes a torsion coil spring as a second spring that applies a rotational force for a return action to the rotation transmission member 23, and has one end arm on the pin member 25 of the rotation transmission member 23 and the other end arm on the device 12 side. The rotational force in the F″ direction that acts opposite to the rotational force in the F direction generated on the output shaft 10 due to the elastic force of the first spring 4 that engages with the member 27 and applies to the valve member 3 is transmitted to the rotation transmission member. 23.The rotation transmitting member 2
3 is a torsion coil spring 26 when the pin member 25 engages with a stop member 28 provided on the device main body 12 side.
This makes it possible to stop rotation in the F″ direction.
かかる構成によつて、出力軸１０に連結のモー
タ軸１１は、電気パルスモータ９の非操作時、第
１ばね４とねじりコイルばね２６との弾性力に起
因する対向作用の回転力を受けて停止部材２１に
よる回転伝達部材２３の停止によつて得られる中
立位置へ設定保持されると共に、電気パルスモー
タ９への電気パルス信号に応じて正逆回転し、一
実施例と同様の作用が得られる。 With this configuration, the motor shaft 11 connected to the output shaft 10 receives the opposing rotational force caused by the elastic force of the first spring 4 and the torsion coil spring 26 when the electric pulse motor 9 is not operated. The rotation transmitting member 23 is stopped by the stop member 21, so that it is set and held at the neutral position, and it rotates forward and backward in response to the electric pulse signal to the electric pulse motor 9, so that the same effect as in the first embodiment is obtained. It will be done.
このように本発明によれば、弁本体へ嵌挿して
軸方向への移動により流体制御を行う弁部材と、
弾性力を弁部材へ付与して弁部材の一方向への移
動を復帰作用する第１ばねと、電気パルス信号に
応じて正逆回転する電気パルスモータと、電気パ
ルスモータのモータ軸と連結してモータ軸の回転
に応じて弁部材を軸方向への目標位置に移動する
変位部材と、モータ軸の一方向への回転時のみに
モータ軸と一体回転可能に設けた回転伝達部材
と、弾性力を回転伝達部材に付与して回転伝達部
材の一方向への回転を復帰作用する第２ばねとを
備え、第１ばねの弾性力に起因して変位部材に回
転力が発生するよう弁部材と変位部材を偏心係合
して配設し、第１ばねと第２ばねの弾性力に起因
する回転力をモータ軸に対向作用させると共に第
１ばねによる回転力よりも第２ばねによる回転力
を大きく設け、第２ばねの弾性力による回転伝達
部材の回転を停止可能に設けたことにより、モー
タ軸を中立位置へ回転して停止させるための回転
力がモータ軸に確実に作用され、モータ軸の中立
位置での遊びを実質的に零にできモータ軸の中立
位置への正確な設定保持が容易に得られ、電気パ
ルス信号に対する弁部材の位置制御の精度を向上
することができる。
As described above, according to the present invention, the valve member is fitted into the valve body and performs fluid control by moving in the axial direction;
A first spring that applies an elastic force to the valve member to restore movement of the valve member in one direction, an electric pulse motor that rotates forward and backward in response to an electric pulse signal, and a motor shaft of the electric pulse motor that is connected to the first spring. a displacement member that moves the valve member to a target position in the axial direction according to the rotation of the motor shaft; a rotation transmission member that is provided so as to be able to rotate integrally with the motor shaft only when the motor shaft rotates in one direction; a second spring that applies force to the rotation transmission member to restore rotation of the rotation transmission member in one direction; and a valve member that generates rotational force in the displacement member due to the elastic force of the first spring. and a displacement member are disposed in eccentric engagement with each other, and the rotational force caused by the elastic force of the first spring and the second spring is applied oppositely to the motor shaft, and the rotational force due to the second spring is greater than the rotational force due to the first spring. By making it possible to stop the rotation of the rotation transmission member by the elastic force of the second spring, the rotational force for rotating the motor shaft to the neutral position and stopping it is reliably applied to the motor shaft, and the motor The play at the neutral position of the shaft can be made substantially zero, making it easy to accurately set and maintain the motor shaft at the neutral position, thereby improving the accuracy of position control of the valve member in response to electric pulse signals.
また、モータ軸の中立位置への正確な設定保持
が得られるため、弁性能を用途に応じた最適なも
のに設けやすくできるといつた実用上の優れた作
用効果を奏する。 Furthermore, since the motor shaft can be accurately set and maintained at the neutral position, it is possible to easily set the valve performance to the optimum value depending on the application, which is an excellent practical effect.
第１図は本発明の一実施例を示すデジタル弁の
縦断面図、第２図ないし第４図は第１図の線−
、線−、線−に沿つた断面図、第５図
は他実施例を示すデジタル弁の主要部分の縦断面
図、第６図は第５図の線−に沿つた断面図で
ある。
１……弁本体、３……弁部材、４……第１ば
ね、９……電気パルスモータ、１１……モータ
軸、１５……変位部材、１７，２３……回転伝達
部材、２０，２６……第２ばね、２１，２８……
停止部材。
FIG. 1 is a vertical sectional view of a digital valve showing an embodiment of the present invention, and FIGS. 2 to 4 are lines taken along the line in FIG.
, FIG. 5 is a longitudinal sectional view of the main part of a digital valve showing another embodiment, and FIG. 6 is a sectional view taken along line - of FIG. 5. DESCRIPTION OF SYMBOLS 1... Valve body, 3... Valve member, 4... First spring, 9... Electric pulse motor, 11... Motor shaft, 15... Displacement member, 17, 23... Rotation transmission member, 20, 26 ...Second spring, 21, 28...
Stopping member.
Claims (1)
制御を行う弁部材と、弾性力を弁部材へ付与して
弁部材の一方向への移動を復帰作用する第１ばね
と、電気パルス信号に応じて正逆回転する電気パ
ルスモータと、電気パルスモータのモータ軸と連
結してモータ軸の回転に応じて弁部材を軸方向へ
の目標位置に移動する変位部材と、モータ軸の一
方向への回転時のみにモータ軸と一体回転可能に
設けた回転伝達部材と、弾性力を回転伝達部材に
付与して回転伝達部材の一方向への回転を復帰作
用する第２ばねとを備え、第１ばねの弾性力に起
因して変位部材に回転力が発生するよう弁部材と
変位部材を偏心係合して配設し、第１ばねと第２
ばねの弾性力に起因する回転力をモータ軸に対向
作用させると共に第１ばねによる回転力よりも第
２ばねによる回転力を大きく設け、第２ばねの弾
性力による回転伝達部材の回転を停止可能に設け
たことを特徴とするデジタル弁。1. A valve member that is inserted into the valve body and performs fluid control by moving in the axial direction, a first spring that applies elastic force to the valve member to restore movement of the valve member in one direction, and an electric pulse signal. an electric pulse motor that rotates in forward and reverse directions depending on a rotation transmission member provided to be rotatable integrally with the motor shaft only when the rotation transmission member rotates, and a second spring that applies elastic force to the rotation transmission member to restore rotation of the rotation transmission member in one direction; The valve member and the displacement member are disposed in eccentric engagement so that rotational force is generated in the displacement member due to the elastic force of the first spring, and the first spring and the second spring are arranged in eccentric engagement with each other.
The rotational force caused by the elastic force of the spring is applied oppositely to the motor shaft, and the rotational force of the second spring is set to be larger than the rotational force of the first spring, so that it is possible to stop the rotation of the rotation transmission member due to the elastic force of the second spring. A digital valve characterized by the fact that it is equipped with a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26705186A JPS63120974A (en) | 1986-11-10 | 1986-11-10 | Digital valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26705186A JPS63120974A (en) | 1986-11-10 | 1986-11-10 | Digital valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63120974A JPS63120974A (en) | 1988-05-25 |
| JPH0438924B2 true JPH0438924B2 (en) | 1992-06-26 |
Family
ID=17439358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26705186A Granted JPS63120974A (en) | 1986-11-10 | 1986-11-10 | Digital valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63120974A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0581511U (en) * | 1992-04-03 | 1993-11-05 | 三菱重工業株式会社 | Fluid pressure servo valve |
-
1986
- 1986-11-10 JP JP26705186A patent/JPS63120974A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63120974A (en) | 1988-05-25 |
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