JPS62144580A - Electric driving circuit of movable member of automobile - Google Patents
Electric driving circuit of movable member of automobileInfo
- Publication number
- JPS62144580A JPS62144580A JP61277764A JP27776486A JPS62144580A JP S62144580 A JPS62144580 A JP S62144580A JP 61277764 A JP61277764 A JP 61277764A JP 27776486 A JP27776486 A JP 27776486A JP S62144580 A JPS62144580 A JP S62144580A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- switch
- movable member
- electric drive
- drive circuit
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0851—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load for motors actuating a movable member between two end positions, e.g. detecting an end position or obstruction by overload signal
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
- E05F15/689—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings specially adapted for vehicle windows
- E05F15/695—Control circuits therefor
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
- E05F15/41—Detection by monitoring transmitted force or torque; Safety couplings with activation dependent upon torque or force, e.g. slip couplings
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
- E05Y2900/55—Windows
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、操作スイッチを操作することにょシ直流電源
と正逆いずれの方向にも回転できるように結合される直
流駆動モータを備えると共に、該モータへの接続導線に
配置され、このモータにょシ駆動される自動車の可動部
材、例えば窓ガラス、サンル−フ等がその最終位置に達
した時にモータへの給電を遮断するためのスイッチを備
えた自動車の可動部材の電気駆動回路に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention comprises a DC drive motor that is coupled to a DC power source so that it can rotate in either forward or reverse directions when an operation switch is operated, and A motor vehicle equipped with a switch disposed in the connecting conductor to the motor for cutting off the power supply to the motor when a movable part of the motor vehicle driven by this motor, such as a window glass, a sunroof, etc., reaches its final position. The present invention relates to an electric drive circuit for a movable member.
従来の技術
従来、可動部材がその最終位置に達した時のモータの停
止は普通リミットスイッチを用いて行われ、これはモー
タの接続導線に配置されており、最終位置にある可動部
材にょシ作動されモータへの電流供給を中断する。2. Prior Art Traditionally, the stopping of a motor when the movable member has reached its final position has normally been achieved using a limit switch, which is placed in the connecting conductor of the motor and which activates the movable member in its final position. and interrupts the current supply to the motor.
発明が解決しようとする問題点
このようなリミットスイッチは、実際に可動部材が最終
位置にある時に初めてモータへの給電が遮断されるもの
であるため、極めて正確なボジショニングを必要とする
。モータへの給電の遮断が早過ぎると、これは特に閉鎖
運動に欠点が認められ、可動部材が完全にその閉鎖位置
に達していないため、窓ガラヌやサンルーフに不快な風
の雑音が生じるばかりでなく、気密が保たれない。この
欠点全僻けるため、リミットスイッチの作動の後モータ
への電流供給をなお一定時間維持し、可動部材が確実に
その最終位置まで移動するようにする時間素子を設ける
ことも公知である。経費が上昇することは別としても、
この場合モータは少なくとも短時間高い短絡電流を負荷
され、回路要素も高い電流で負荷されるため、その寿命
が減少する。リミットスイッチを用いず、その代わりに
可ＷＩｔＪ部材が最終位置に到達した時にモータのブロ
ックによシ生じる高い電力消費を遮断の信号として用い
る回路も同じ欠点をもっている。Problems to be Solved by the Invention Such a limit switch requires extremely accurate positioning because the power supply to the motor is cut off only when the movable member is actually in its final position. If the power supply to the motor is cut off too early, this is particularly noticeable in the closing movement, as the movable parts have not fully reached their closing position, which can only lead to unpleasant wind noises in the window panes and sunroofs. airtightness cannot be maintained. To overcome this drawback, it is also known to provide a time element which maintains the current supply to the motor for a certain period of time after actuation of the limit switch and ensures that the movable member has moved to its final position. Apart from rising costs,
In this case, the motor is loaded with high short-circuit currents at least briefly and the circuit elements are also loaded with high currents, which reduces their service life. Circuits that do not use a limit switch, but instead use the high power consumption caused by the blocking of the motor when the movable WItJ member reaches its final position, as a signal for disconnection, have the same drawbacks.
そこで本発明の目的は、リミットスイッチを用いずにモ
ータの停止が可動部材のそれぞれの最終位置において正
確に行われ、しかもかかるｉ？！能によりモータを含む
回路要素の寿命を短かくすることのない冒頭に挙げた種
類の電気駆動回路ｋ ［１１や出すことにある。SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to accurately stop the motor at each final position of the movable member without using a limit switch, and to ensure that the i? ! Electric drive circuits of the type mentioned at the beginning, which do not shorten the life of the circuit elements including the motor due to their performance, are to be developed.
問題点を解決するだめの手段
この目的は本発明により次のようにして連成される。す
なわちモータの接続導線に配置されたスイッチが、モー
タの回転にて誘導された交流電圧から得られる信号によ
シ閉位置に保持されるのである。Means for Solving the Problem This object is achieved according to the invention in the following manner. That is, a switch located on the connecting conductor of the motor is held in the closed position by a signal derived from the alternating current voltage induced by the rotation of the motor.
作 用
この交流電圧はモータ回転数の関数であり、モータの静
止時にゼロとなるため、可動部材が最終位置に到達して
モータが停止する時直ちにモータへの給電が遮断される
。Operation This alternating current voltage is a function of the motor rotational speed and is zero when the motor is at rest, so that the power supply to the motor is interrupted as soon as the movable member reaches its final position and the motor stops.
本発明の好適な実施例においては、モータの接続導線に
インダクタンスが配置されており、交流電圧が該インダ
クタンスを介して降下すると共に、直流成分から分離さ
れ、更に整流を受けた上で、前記接続導線に配置された
スイッチを閉位置に保持するだめの信号として用いられ
る。In a preferred embodiment of the invention, an inductance is arranged in the connecting conductor of the motor, through which the alternating current voltage drops and is separated from the direct current component, further rectified and then It is used as a signal to keep a switch placed on a conductor in the closed position.
実施例
以下本発明の一実施例を添付図面に基づいて詳創に説明
する。EXAMPLE Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings.
第１図において、（１）は自動車窓ガラスの駆動モータ
を示し、その導線（２）、（３）は切替スイッチ（４）
によりバッテリ（５）のプラス極またはマイナス極のい
ずれとも結合することができる。切替スイッチ（４）は
トランスファリレーにより構成されており、その制御電
圧は制御・保持回路（６）から供給され、一方この制御
・保持回路（６）はハンドスイッチ（７）により作動さ
れる。切替スイッチ（４）は通常の構造のものであり、
コイルの励起のない時は図示した中立位置に保たれる。In Figure 1, (1) shows the drive motor for the automobile window glass, and its conductors (2) and (3) are the changeover switch (4).
It can be coupled to either the positive or negative terminal of the battery (5). The changeover switch (4) is constituted by a transfer relay, and its control voltage is supplied from a control/holding circuit (6), which is actuated by a hand switch (7). The changeover switch (4) has a normal structure,
When the coil is not energized, it is maintained in the neutral position shown.
ハンドスイッチ（７）がいずれかの作動位置に動かされ
ると、切替スイッチ（４）はこれに応じて作動され、駆
動モータ（１）を望みの回転方向に動作させる。ハンド
スイッチ（７）ヲ離した後切替スイッチ（４）は制砒・
Ｐｊ：持回系（６）により償スフだ位置に保たれる。制
御・保持回路（６）の構成は第２図に駆動モータ（１）
を一方向に回転させる時の状態で示されており、後に詳
しく述べる。When the hand switch (7) is moved to either operating position, the changeover switch (4) is actuated accordingly to operate the drive motor (1) in the desired direction of rotation. After releasing the hand switch (7), the changeover switch (4)
Pj: It is maintained at the compensation position by the recirculation system (6). The configuration of the control/holding circuit (6) is shown in Figure 2.
It is shown in the state when it is rotated in one direction, and will be described in detail later.
駆動モータ（１）につながるマイナス導￥ｉ１！ （８
）にはインダクタンス（９）が自装置されており、この
インダクタンス（９）により駆動モータ（１）で発生さ
れた交流電圧は降下する。一方該交流電圧はコンテ゛ン
サｑ１によりバッテリ（５）の直流電圧から分離され、
増幅器ｑυにより増幅されて制御・保持回路（６）に導
かれる。Negative conductor connected to drive motor (1) ¥i1! (8
) is equipped with an inductance (9), and the alternating current voltage generated by the drive motor (1) drops due to this inductance (9). On the other hand, the AC voltage is separated from the DC voltage of the battery (5) by a capacitor q1,
The signal is amplified by the amplifier qυ and guided to the control/holding circuit (6).
駆動モータ（１）が停止すると、切替スイッチ（４）が
作業位置にある場合でも駆動モータ（１）から交流電圧
が誘導されないため、マイナス導線（８）には交流電圧
でなく直流のみが流れ、従って制御・保持回路（６）に
はコンデンサ＜１０のため制御信号が送られない。この
ため制御・保持回路（６）により活性化されていた切替
スイッチ（４）が開かれる。When the drive motor (1) stops, no alternating voltage is induced from the drive motor (1) even when the changeover switch (4) is in the working position, so only direct current, not alternating voltage, flows through the negative conductor (8). Therefore, no control signal is sent to the control/holding circuit (6) since the capacitor is <10. For this reason, the changeover switch (4), which had been activated by the control/holding circuit (6), is opened.
第２図から明らかなように、増幅器Ｑ１）により増１陥
される交流電圧信号は駆動モータ（１）が回転している
時のみ現れ、制御・保持回路（６）にひいてダイオード
（２）により整流される。そして、整流された信号によ
りトランジスタ側が制御される。これにより先に駆動モ
ータ（１）の始動のため操作されたハンドスイッチ（７
）がバイパスされ、第１図の切替スイッチ（４）を駆動
モータ（１）の一方向回転用として示したスイッチ（４
′）のコイル（４ａ）は、ハンドスイッチ（７）を離し
た後も引続き活性化されるため、窓ガラスはその最終位
置（完全閉位置又は完全開位置）へと移動する。既に第
１図との関連で述べたように駆動モータ（１）の回転時
にのみ交流電圧信号が生じ、スイッチ（４′）のコイル
（４ａ）を活性化するに対し、駆動モータ（１）の停止
時には交流電圧が誘導されない。従って窓ガラスが最終
位置に達して駆動モータ（１）が停止すると、トランジ
スタ側はオフになり、スイッチ（４）のコイル（４ａ）
は無電流となるため、このスイッチ（４）は開き駆動モ
ータ（１）への電流供給が中断される。As is clear from FIG. 2, the AC voltage signal amplified by the amplifier Q1) appears only when the drive motor (1) is rotating and is passed through the control and holding circuit (6) to the diode (2). rectified by The transistor side is then controlled by the rectified signal. As a result, the hand switch (7) that was previously operated to start the drive motor (1)
) is bypassed, and the selector switch (4) in Figure 1 is replaced by a switch (4) shown for one-way rotation of the drive motor (1).
The coil (4a) of ') continues to be activated after releasing the hand switch (7), so that the window pane moves to its final position (fully closed or fully open position). As already mentioned in connection with FIG. No alternating current voltage is induced when stopped. Therefore, when the window glass reaches its final position and the drive motor (1) stops, the transistor side is turned off and the coil (4a) of the switch (4)
Since there is no current, this switch (4) is opened and the current supply to the drive motor (1) is interrupted.
弁明の効果
以上述べたように、本発明の′電気駆動回路によれば、
直流駆動モータと直流電源とを結ぶＭ続導線に凸装置さ
れた切替スイッチが、モータの回転によって誘導される
交流７ば圧から得られる信号で閉位置に保持されるよう
になっているので、自動車の窓ガラス等の可動部材が最
終位置に達してモータの回転が停止すれば直ちに交流電
圧がなくなり切替スイッチが開放され、モータへの給電
が遮断される。従って、従来の電気駆動回路のように、
正確なボジシ３ニングを必要とするリミットスイッチを
組込んだり、さらにリミットスイッチに付随してコスト
高の原因となる時間素子金膜けたり、またモータやその
他の回路要素に高い電流を流してそれらの寿命を短かく
したジすることなしに、可動部材がその完全な最終位置
に達した時にモータへの給電全確実に遮断することがで
きるものである。Effects of Defense As stated above, according to the electric drive circuit of the present invention,
The changeover switch provided on the M connection conductor connecting the DC drive motor and the DC power supply is held in the closed position by a signal obtained from the AC pressure induced by the rotation of the motor. When a movable member such as a windowpane of an automobile reaches its final position and the motor stops rotating, the alternating current voltage immediately disappears, the changeover switch is opened, and the power supply to the motor is cut off. Therefore, like a conventional electric drive circuit,
Incorporating a limit switch that requires accurate positioning, adding a gold film to the time element that is associated with a limit switch and causing high costs, and running a high current through a motor or other circuit elements. It is possible to reliably cut off the power supply to the motor when the movable member reaches its complete final position without shortening the service life of the motor.
図面は本発明の一実施例を示しており、第１図は電気駆
動回路の構成図、第２図はモータが一方向に回転する場
合の機能構成図である。
（１）・・・駆動モータ、（４）′・・・切替スイッチ
（スイッチ） 、＜５）・・・バッチ！Ｊ（ＬＸ流電
源） 、（６）・・・制御・保持回路、（８）・・・マ
イナス導線（接続導線） 、 （９）・・・インダクタ
ンス、ａ４・・・トランジスタ。The drawings show one embodiment of the present invention; FIG. 1 is a block diagram of an electric drive circuit, and FIG. 2 is a functional block diagram when the motor rotates in one direction. (1)... Drive motor, (4)'... Selector switch (switch), <5)... Batch! J (LX power supply), (6)...control/holding circuit, (8)...minus conductor (connection conductor), (9)...inductance, a4...transistor.
Claims (1)
いずれの方向にも回転できるように結合される直流駆動
モータを備えると共に、該モータへの接続導線に配置さ
れ、このモータにより駆動される可動部材がその最終位
置に達した時にモータへの給電を遮断するためのスイッ
チを備えた電気駆動回路であって、前記接続導線に配置
されたスイッチは、前記モータの回転にて誘導された交
流電圧から得られる信号により閉位置に保持されるよう
に構成されていることを特徴とする自動車の可動部材の
電気駆動回路。 ２、前記モータへの接続導線にインダクタンスが配置さ
れており、前記交流電圧が該インタグタンスを介して降
下すると共に直流成分から分離され、更に整流を受けた
上で、前記接続導線に配置されたスイッチを閉位置に保
持するための信号として用いられるように構成されてい
ることを特徴とする特許請求の範囲第１項に記載の電気
駆動回路。[Claims] 1. A DC drive motor is provided which is coupled to a DC power supply so as to be able to rotate in either forward or reverse direction by operating an operation switch, and which is disposed on a lead wire connected to the motor. An electric drive circuit comprising a switch for cutting off the power supply to the motor when the movable member driven by the motor reaches its final position, the switch disposed on the connecting conductor being configured to stop the rotation of the motor. 1. An electric drive circuit for a movable member of an automobile, characterized in that the electric drive circuit is configured to be held in a closed position by a signal obtained from an alternating current voltage induced by a motor. 2. An inductance is arranged in the connecting conductor to the motor, and the alternating current voltage drops through the intagtance and is separated from the direct current component, and is further rectified before being placed in the connecting conductor. An electric drive circuit according to claim 1, wherein the electric drive circuit is configured to be used as a signal for holding a switch in a closed position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3151307A DE3151307C2 (en) | 1981-12-24 | 1981-12-24 | Circuit arrangement for the electrical drive of a movable element, for example a window of a motor vehicle |
| DE3151307.7 | 1981-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62144580A true JPS62144580A (en) | 1987-06-27 |
Family
ID=6149682
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20268282U Pending JPS58134092U (en) | 1981-12-24 | 1982-12-22 | Electric drive circuit for moving parts of automobiles |
| JP61277764A Pending JPS62144580A (en) | 1981-12-24 | 1986-11-19 | Electric driving circuit of movable member of automobile |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20268282U Pending JPS58134092U (en) | 1981-12-24 | 1982-12-22 | Electric drive circuit for moving parts of automobiles |
Country Status (2)
| Country | Link |
|---|---|
| JP (2) | JPS58134092U (en) |
| DE (1) | DE3151307C2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1204907B (en) * | 1987-01-15 | 1989-03-10 | Cavis Cavetti Isolati Spa | CIRCUIT FOR THE CONTROL OF THE ROTATION OF MOTORS, USED FOR THE MOVEMENT OF ELECTRIC GLASSES AND FOR A MULTIPLICITY OF APPLICATIONS ON MOTOR VEHICLES AND SIMILAR |
| EP0306795B1 (en) * | 1987-09-11 | 1991-11-27 | Siemens Aktiengesellschaft | Electromotive driving device for the operation of windows, sliding roofs or the like, especially for motor vehicles |
| DE3816779A1 (en) * | 1988-05-17 | 1989-11-23 | Fritzmeier Georg Gmbh & Co | Cab for mobile working appliances, especially for commercial vehicles |
| FR2716231B1 (en) * | 1994-02-11 | 1996-05-15 | Chen Tse Hsing | Safety control device for motorized window glass of the type without detector, and its control method. |
| DE19654097A1 (en) * | 1996-12-23 | 1998-06-25 | Webasto Karosseriesysteme | System for monitoring and/or controlling DC motors esp. for driving adjustable elements in motor vehicles |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55150790A (en) * | 1979-05-15 | 1980-11-22 | Nippon Electric Ind Co Ltd | Drive control circuit of electric driver |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1110282B (en) * | 1960-05-28 | 1961-07-06 | Bosch Gmbh Robert | Electrical switching device for electric motors for opening and closing windows, sliding roofs, doors or the like, especially on motor vehicles |
| CH588779A5 (en) * | 1975-04-26 | 1977-06-15 | Papst Motoren Kg |
-
1981
- 1981-12-24 DE DE3151307A patent/DE3151307C2/en not_active Expired
-
1982
- 1982-12-22 JP JP20268282U patent/JPS58134092U/en active Pending
-
1986
- 1986-11-19 JP JP61277764A patent/JPS62144580A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55150790A (en) * | 1979-05-15 | 1980-11-22 | Nippon Electric Ind Co Ltd | Drive control circuit of electric driver |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3151307A1 (en) | 1983-07-14 |
| DE3151307C2 (en) | 1986-07-31 |
| JPS58134092U (en) | 1983-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2723918B2 (en) | Actuating device for movable member for closing opening of vehicle | |
| JPS59209093A (en) | Power window controller | |
| JPS62144580A (en) | Electric driving circuit of movable member of automobile | |
| US4164692A (en) | Operating mechanism for a pivotable sliding panel | |
| US4070607A (en) | Drive circuit for power operation of a movable part of a vehicle coachwork | |
| JPH048587B2 (en) | ||
| US6559614B2 (en) | Electrical circuit arrangement for controlling an electromotor in a motor vehicle | |
| US4362975A (en) | Device for controlling a bidirectional DC motor | |
| JPS5939064Y2 (en) | Safety device for electric sunroof device | |
| JPH10217763A (en) | Motor control device for switching mechanism | |
| JPS6070983A (en) | Opening and closing drive device of on-vehicle motor-driven apparatus | |
| JPS6159068B2 (en) | ||
| JPH03197232A (en) | Motor control device of sun roof for automobile | |
| JPH051996Y2 (en) | ||
| JPS6251078B2 (en) | ||
| JPH047353Y2 (en) | ||
| JP2520865Y2 (en) | Motor control device for automobile sunroof | |
| JPH05149054A (en) | Opening controller for car door | |
| JPS626237Y2 (en) | ||
| JPH06146718A (en) | Power window controller | |
| JPH0626073Y2 (en) | Motor control circuit | |
| JPS60133183A (en) | Power window control apparatus | |
| JPH0312071Y2 (en) | ||
| JPS6340619Y2 (en) | ||
| JP2558743B2 (en) | Flow control valve |