WO2019138672A1 - Noise reduction structure for in-vehicle dc motor and motor drive-type valve device - Google Patents

Noise reduction structure for in-vehicle dc motor and motor drive-type valve device Download PDF

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Publication number
WO2019138672A1
WO2019138672A1 PCT/JP2018/041156 JP2018041156W WO2019138672A1 WO 2019138672 A1 WO2019138672 A1 WO 2019138672A1 JP 2018041156 W JP2018041156 W JP 2018041156W WO 2019138672 A1 WO2019138672 A1 WO 2019138672A1
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Prior art keywords
motor
connector
coil
terminal
valve
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PCT/JP2018/041156
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French (fr)
Japanese (ja)
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真 間瀬
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愛三工業株式会社
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Publication of WO2019138672A1 publication Critical patent/WO2019138672A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators

Definitions

  • the present disclosure relates to a noise reduction structure that reduces noise generated from an on-vehicle DC motor, and a motor drive valve device that is opened and closed by the DC motor.
  • the on-vehicle DC motor may be affected by the noise generated from the DC motor in a motor-driven valve device driven to open and close by the DC motor.
  • noise generated by the DC motor may adversely affect the control of the DC motor and the operation of other components (for example, sensors and the like).
  • a choke coil is provided to reduce noise generated by a DC motor (see Patent Document 1).
  • a choke coil is provided in series in the middle of a connector terminal in which one end is disposed in a connector provided on a cover and the other end is connected to a motor terminal.
  • the connector terminal is divided, the choke coil is arranged between the divided connector terminals, and the choke coil is arranged. It is fixed to the cover. And it electrically connects to the connector terminal which divided the both ends of the choke coil. That is, the both ends of the choke coil are connected to the divided connector terminals by welding, soldering or the like.
  • the assembling operation is complicated (the number of processes increases) and the number of parts is increased, and thus the productivity is lowered and the product cost is disadvantageous.
  • the present disclosure has been made to solve the above-described problems, and provides a noise reduction structure and a motor-driven valve device for an on-vehicle DC motor that can improve productivity and reduce product cost.
  • the purpose is to
  • One mode of the present disclosure made to solve the above problems is a noise reduction structure for reducing noise generated from an on-vehicle DC motor, and connecting a motor terminal provided to the DC motor, the DC motor, and an external device.
  • a coil having a spring function is arranged in series in a compressed state between the connector terminal and the connector terminal provided in the connector.
  • the coil has a function as an inductance for noise reduction and a function as a connection part for electrically connecting the motor terminal and the connector terminal. Therefore, it is not necessary to divide the connector terminal or to connect the coil to the connector terminal by welding, soldering or the like. In addition, connection (fitting) components for connecting the motor terminal and the connector terminal are not necessary. Therefore, the productivity is improved and the cost is also advantageous.
  • a DC motor is driven to open and close a valve body, and the opening degree of the valve body is detected by a sensor to a target opening degree.
  • a motor-driven valve device to be controlled a valve housing provided with the valve body and the DC motor, a connector for connecting the valve device and an external device, a cover attached to the valve housing, and a spring function A coil having the above-mentioned configuration, and the coil is disposed in series in a compressed state between a motor terminal provided to the DC motor and a connector terminal provided to the connector.
  • a coil having a spring function is disposed in series in a compressed state between the motor terminal and the connector terminal.
  • the coil has a function as an inductance for noise reduction and a function as a connection part for electrically connecting the motor terminal and the connector terminal. Therefore, there is no need to divide connector terminals or connect coils by welding, soldering or the like.
  • connection (fitting) components for connecting the motor terminal and the connector terminal are not necessary. Therefore, the productivity is improved and the product cost is also advantageous.
  • the coil is directly fitted to the motor terminal or the connector terminal, and is fixed in contact with the motor terminal or the connector terminal at a coil inner diameter portion. preferable.
  • the coil can be fixed easily and reliably at a predetermined position. And if a cover is attached to a valve housing, a coil can be made into a compression state and it can arrange in series between a motor terminal and a connector terminal. Therefore, the working efficiency is improved, and the productivity can be further improved.
  • the guide member which accommodates a part of said coil is formed in the said connector terminal side or the said motor terminal side.
  • the coil can be easily and reliably disposed at a predetermined position. Then, by mounting the cover on the valve housing, the coil can be compressed and arranged in series between the motor terminal and the connector terminal. Therefore, the working efficiency is improved, and the productivity can be further improved.
  • the productivity can be improved and the product cost can be reduced.
  • EGR valve It is a perspective view of an EGR valve concerning an embodiment. It is a sectional view of an EGR valve concerning an embodiment. It is a disassembled perspective view of the EGR valve which shows the principal part of the noise reduction structure which concerns on embodiment. It is a disassembled perspective view (a cover is partially broken) of the EGR valve which shows the connection part of the coil in the noise reduction structure which concerns on embodiment. It is a disassembled perspective view of the EGR valve which shows the whole of the connector terminal in the noise reduction structure which concerns on embodiment.
  • an exhaust gas recirculation valve using a noise reduction structure of an on-vehicle DC motor
  • EGR valve exhaust gas recirculation valve
  • an exhaust gas recirculation passage EGR passage
  • EGR gas exhaust gas recirculation gas
  • the EGR valve is disposed in the EGR passage to adjust the flow rate of the EGR gas.
  • FIG. 1 shows the EGR valve in a perspective view
  • FIG. 2 shows the EGR valve in a sectional view
  • the EGR valve 1 includes a valve unit 10 configured of a butterfly valve (double eccentric valve), a motor unit 20 incorporating a DC motor 21, and a plurality of gears (gear group) And a speed reduction mechanism section 30 incorporating the speed reduction mechanism 31.
  • the valve portion 10 includes a pipe line 12 having a flow path 11 through which the EGR gas flows, and in the flow path 11, the valve seat 13, the valve body 14 and the tip of the rotary shaft 15 are disposed.
  • the rotational force of the DC motor 21 is transmitted to the rotating shaft 15 via the speed reduction mechanism.
  • the valve body 14 is opened and closed via the speed reduction mechanism 31 and the rotation shaft 15 by the drive of the DC motor 21.
  • Such an EGR valve 1 includes, as main components, a body 40, a DC motor 21, and a speed reduction mechanism 31 in addition to the valve seat 13, the valve body 14 and the rotating shaft 15.
  • the body 40 includes an aluminum valve housing 41 including the flow passage 11 and the conduit 12, and a synthetic resin cover 42 closing the open end of the valve housing 41.
  • the valve body 14, the rotating shaft 15 and the DC motor 21 are provided in a valve housing 41.
  • the cover 42 is fixed to the valve housing 41 by a plurality of clips (not shown). Inside the cover 42, an opening degree sensor 45 is provided corresponding to the base end of the rotary shaft 15, and for detecting the opening degree (valve opening degree) of the valve body 14.
  • the opening degree sensor 45 detects a change in the magnetic field of the magnet 46 fixed to the gear rotating integrally with the valve body 14 and the rotating shaft 15 as a valve opening degree.
  • the cover 42 is provided with a connector 43 (see FIG. 3) for connecting to an electronic control unit (ECU) which is an external device for controlling the EGR valve 1 via a harness.
  • ECU electronice control unit
  • FIGS. 3 to 5 shows an exploded perspective view of the main part of the noise reduction structure in an exploded perspective view of the EGR valve
  • FIG. 4 shows an exploded perspective view of the EGR valve in which the cover is partially broken for connection of coils in the noise reduction structure
  • 6 shows a connector terminal embedded in the cover in a perspective view of the EGR valve. Note that, in FIGS. 3 to 5, illustration of parts that are not related to the noise reduction structure in the EGR valve is omitted.
  • the noise reduction structure in the EGR valve 1 uses a choke coil as shown in FIG. 3 to FIG. Specifically, coils 50a and 50b having a spring function are arranged in series in a compressed state between motor terminals 21a and 21b of DC motor 21 and connector terminals 43a and 43b of connector 43. ing.
  • the connector terminals 43a to 43f are two connector terminals 43a and 43b connected to the motor terminals 21a and 21b of the DC motor 21 and four connector terminals connected to the opening degree sensor 45.
  • Connector terminals 43c, 43d, 43e, 43f are included.
  • Most of the connector terminals 43a to 43f are embedded in the cover.
  • One end of each of the connector terminals 43a to 43f is arranged in line inside the connector 43, and the other end is connected to the coils 50a, 50b or the opening degree sensor 45. That is, the other ends of the connector terminals 43a and 43b are connected to the coils 50a and 50b, and the other ends of the connector terminals 43c to 43f are connected to the opening degree sensor 45.
  • the DC motor 21 is electrically connected to the ECU via the two coils 50a and 50b, the two connector terminals 43a and 43b, and the harness.
  • the opening degree sensor 45 is electrically connected to the ECU via the four connector terminals 43c to 43f and a harness.
  • flat portions 44a and 44b are formed at the other ends of the connector terminals 43a and 43b, and the flat portions 44a and 44b attach the cover 42 to the valve housing 41.
  • the motor terminals 21a and 21b are disposed immediately above.
  • the flat portions 44a and 44b are not embedded in the cover 42 and are exposed.
  • the coils 50a and 50b are disposed between the motor terminals 21a and 21b and the flat portions 44a and 44b of the connector terminals 43a and 43b.
  • each of the coils 50a and 50b is press-fit to each of the motor terminals 21a and 21b, and each of the coil inner diameter portions is in contact with the motor terminal. Therefore, one ends of the coils 50a and 50b are directly and easily fitted to the motor terminals 21a and 21b simply and securely. On the other hand, the other ends of the coils 50a and 50b are in contact with the flat portions 44a and 44b of the connector terminals 43a and 43b.
  • the guide member 51 which accommodates one part by the side of the other end of coil 50a, 50b is formed in the arrangement position of plane part 44a, 44b of connector terminal 43a, 43b.
  • the guide member 51 has a cylindrical shape and is integrally formed on the cover 42.
  • the coils 50a and 50b have a spring mechanism, and are provided in a compressed state between the motor terminals 21a and 21b and the connector terminals 43a and 43b. That is, in the present embodiment, the coils 50a and 50b are press-fitted to the motor terminals 21a and 21b, and the cover 42 is simply attached to the valve housing 41 to compress the coils 50a and 50b in the compressed state. , 43b may be provided in series. As a result, the coils 50a and 50b can maintain contact with the flat portions 44a and 44b of the connector terminals 43a and 43b, and electrically connect the motor terminals 21a and 21b to the connector terminals 43a and 43b. be able to. As a result, unlike the conventional EGR valve, the connection (fitting) component provided on the cover for connecting the motor terminal and the connector terminal becomes unnecessary.
  • the insulating films are not provided on the coils 50a and 50b, but in a compressed state of the coils 50a and 50b, there is a possibility that the windings of the coils 50a and 50b approach (or contact) to cause short circuit.
  • an insulating film may be provided on the windings of the coils 50a and 50b. Thereby, the short circuit in coil 50a, 50b can be prevented reliably.
  • the coils 50a and 50b having a spring function are disposed in series in a compressed state between the motor terminals 21a and 21b and the connector terminals 43a and 43b.
  • the coils 50a and 50b have a function as an inductance for reducing noise generated from the DC motor 21 and a function as a connection part for electrically connecting the motor terminals 21a and 21b and the connector terminals 43a and 43b.
  • the inductance of the coil changes depending on the shape of the coil (the number of turns and the coil diameter), the coil shape that provides the noise reduction effect most can be obtained according to the DC motor used. It should be decided.
  • the noise generated from the DC motor 21 is reduced by the coils 50a, 50b arranged in series between the motor terminals 21a, 21b and the connector terminals 43a, 43b. For this reason, the noise generated by the DC motor 21 is prevented from being applied to the connector terminals 43a to 43f. As a result, it is possible to prevent the opening sensor 45 from outputting a false output or the deterioration of the controllability of the DC motor 21 due to the noise generated from the DC motor 21.
  • coil 50a, 50b is made to contact connector terminal 43a, 43b in said embodiment
  • coil 50a, 50b can be press-fit and made to contact connector terminal 43a, 43b.
  • the ends of the connector terminals 43a and 43b may be bent toward the DC motor 21.
  • the coils 50a and 50b may be press-fit to the motor terminals 21a and 21b as in the above embodiment.
  • 21b may be bent to provide a flat portion, and the coils 50a and 50b may be brought into contact with the flat portion.
  • the guide member 51 is provided on the side of the connector terminals 43a and 43b, but the guide member 51 may be provided on the side of the motor terminals 21a and 21b.
  • the guide member 51 may be provided on either the connector terminal 43a, 43b side or the motor terminal 21a, 21b side, but may be provided on both the connector terminal 43a, 43b side and the motor terminal 21a, 21b side.
  • the exhaust gas recirculation valve (EGR valve) is exemplified as the motor drive type valve device, but the present disclosure relates to other valve devices (for example, electronic throttle device, intake switching device, exhaust switching device, etc.) Can also be applied.
  • EGR valve exhaust gas recirculation valve
  • this indication is applied also to the in-vehicle electric product provided with a car-mounted DC motor besides this. be able to.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Motor Or Generator Frames (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

Provided is a noise reduction structure for reducing noise generated by an in-vehicle DC motor, wherein coils having a spring function are disposed in series in a compressed state between a motor terminal provided on the DC motor and a connector terminal provided on a connector for connecting an external device with the DC motor.

Description

車載用ＤＣモータのノイズ低減構造及びモータ駆動式弁装置Noise reduction structure for automotive DC motor and motor drive valve device
　本開示は、車載用ＤＣモータから発生するノイズを低減するノイズ低減構造、及びＤＣモータにより開閉駆動されるモータ駆動式弁装置に関する。 The present disclosure relates to a noise reduction structure that reduces noise generated from an on-vehicle DC motor, and a motor drive valve device that is opened and closed by the DC motor.
　車載用ＤＣモータは、ブラシとコミュテータとの間でノイズが発生するため、ＤＣモータにより開閉駆動されるモータ駆動式弁装置では、ＤＣモータから発生するノイズの影響を受けるおそれがある。例えば、ＤＣモータで発生するノイズが、ＤＣモータの制御や他部品（例えば、センサなど）の動作に悪影響を与えるおそれがある。 Since noise is generated between the brush and the commutator, the on-vehicle DC motor may be affected by the noise generated from the DC motor in a motor-driven valve device driven to open and close by the DC motor. For example, noise generated by the DC motor may adversely affect the control of the DC motor and the operation of other components (for example, sensors and the like).
　そのため、モータ駆動式弁装置（例えば、電子スロットル装置など）において、ＤＣモータで発生するノイズを低減するためにチョークコイルが設けられている（特許文献１参照）。この電子スロットル装置では、カバーに設けられたコネクタに一端が配置され他端がモータ端子に接続されるコネクタ端子の途中に、チョークコイルが直列に設けられている。 Therefore, in a motor drive type valve device (for example, an electronic throttle device or the like), a choke coil is provided to reduce noise generated by a DC motor (see Patent Document 1). In this electronic throttle device, a choke coil is provided in series in the middle of a connector terminal in which one end is disposed in a connector provided on a cover and the other end is connected to a motor terminal.
特開２００７－２９２０４３号公報JP 2007-292043 A
　しかしながら、上記の電子スロットル装置では、ＤＣモータとコネクタとの間にチョークコイルを直列に配置するために、コネクタ端子を分割し、分割したコネクタ端子の間にチョークコイルを配置して、チョークコイルをカバーに固定している。そして、チョークコイルの両端を分割したコネクタ端子に対して電気的に接続している。すなわち、チョークコイルの両端が分割したコネクタ端子に対して、溶接やはんだ付け等によって接続されている。そのため、組み付け作業の複雑化（工程数増加）や部品点数の増加を招くため、生産性が低下するとともに製品コスト面でも不利になってしまう。 However, in the above electronic throttle device, in order to arrange the choke coil in series between the DC motor and the connector, the connector terminal is divided, the choke coil is arranged between the divided connector terminals, and the choke coil is arranged. It is fixed to the cover. And it electrically connects to the connector terminal which divided the both ends of the choke coil. That is, the both ends of the choke coil are connected to the divided connector terminals by welding, soldering or the like. As a result, the assembling operation is complicated (the number of processes increases) and the number of parts is increased, and thus the productivity is lowered and the product cost is disadvantageous.
　そこで、本開示は上記した問題点を解決するためになされたものであり、生産性の向上及び製品コストの低減を図ることができる車載用ＤＣモータのノイズ低減構造及びモータ駆動式弁装置を提供することを目的とする。 Accordingly, the present disclosure has been made to solve the above-described problems, and provides a noise reduction structure and a motor-driven valve device for an on-vehicle DC motor that can improve productivity and reduce product cost. The purpose is to
　上記課題を解決するためになされた本開示の一形態は、車載用ＤＣモータから発生するノイズを低減するノイズ低減構造において、前記ＤＣモータに備わるモータ端子と、前記ＤＣモータと外部装置を接続するためのコネクタに備わるコネクタ端子との間に、バネ機能を有するコイルを圧縮状態で直列に配置していることを特徴とする。 One mode of the present disclosure made to solve the above problems is a noise reduction structure for reducing noise generated from an on-vehicle DC motor, and connecting a motor terminal provided to the DC motor, the DC motor, and an external device. A coil having a spring function is arranged in series in a compressed state between the connector terminal and the connector terminal provided in the connector.
　この車載用ＤＣモータのノイズ低減構造では、モータ端子とコネクタ端子との間に、バネ機能を有するコイルを圧縮状態で直列に配置している。これにより、コイルが、ノイズ低減のインダクタンスとしての機能と、モータ端子とコネクタ端子を電気的に接続する接続部品としての機能とを兼ね備える。そのため、コネクタ端子を分割したり、コネクタ端子に対してコイルを溶接やはんだ付け等によって接続する必要がなくなる。また、モータ端子とコネクタ端子とを接続するための接続（嵌合）部品が不要となる。従って、生産性を向上させるとともに、コスト面でも有利となる。 In the noise reduction structure of the on-vehicle DC motor, coils having a spring function are arranged in series in a compressed state between the motor terminal and the connector terminal. Thus, the coil has a function as an inductance for noise reduction and a function as a connection part for electrically connecting the motor terminal and the connector terminal. Therefore, it is not necessary to divide the connector terminal or to connect the coil to the connector terminal by welding, soldering or the like. In addition, connection (fitting) components for connecting the motor terminal and the connector terminal are not necessary. Therefore, the productivity is improved and the cost is also advantageous.
　上記課題を解決するためになされた本開示の別形態は、ＤＣモータにより弁体を開閉駆動するとともに、前記弁体の開度をセンサにより検出しながら前記弁体の開度を目標開度に制御するモータ駆動式弁装置において、前記弁体及び前記ＤＣモータが設けられる弁ハウジングと、弁装置と外部装置を接続するためのコネクタが設けられ、前記弁ハウジングに装着されるカバーと、バネ機能を有するコイルと、を備え、前記コイルは、前記ＤＣモータに備わるモータ端子と前記コネクタに備わるコネクタ端子との間に、圧縮状態で直列に配置されていることを特徴とする。 According to another embodiment of the present disclosure made to solve the above problems, a DC motor is driven to open and close a valve body, and the opening degree of the valve body is detected by a sensor to a target opening degree. In a motor-driven valve device to be controlled, a valve housing provided with the valve body and the DC motor, a connector for connecting the valve device and an external device, a cover attached to the valve housing, and a spring function A coil having the above-mentioned configuration, and the coil is disposed in series in a compressed state between a motor terminal provided to the DC motor and a connector terminal provided to the connector.
　このモータ駆動式弁装置では、モータ端子とコネクタ端子との間に、バネ機能を有するコイルを圧縮状態で直列に配置している。これにより、コイルが、ノイズ低減のインダクタンスとしての機能と、モータ端子とコネクタ端子を電気的に接続する接続部品としての機能とを兼ね備える。そのため、コネクタ端子を分割したり、コイルを溶接やはんだ付け等によって接続する必要がなくなる。また、モータ端子とコネクタ端子とを接続するための接続（嵌合）部品が不要となる。従って、生産性が向上するとともに、製品コスト面でも有利となる。 In this motor drive type valve device, a coil having a spring function is disposed in series in a compressed state between the motor terminal and the connector terminal. Thus, the coil has a function as an inductance for noise reduction and a function as a connection part for electrically connecting the motor terminal and the connector terminal. Therefore, there is no need to divide connector terminals or connect coils by welding, soldering or the like. In addition, connection (fitting) components for connecting the motor terminal and the connector terminal are not necessary. Therefore, the productivity is improved and the product cost is also advantageous.
　そして、上記したモータ駆動式弁装置において、前記コイルは、前記モータ端子又は前記コネクタ端子に直接嵌合し、コイル内径部分にて前記モータ端子又は前記コネクタ端子に接触して固定されていることが好ましい。 Further, in the above-described motor drive type valve device, the coil is directly fitted to the motor terminal or the connector terminal, and is fixed in contact with the motor terminal or the connector terminal at a coil inner diameter portion. preferable.
　このような構成にすることにより、コイルを所定位置に簡単かつ確実に固定することができる。そして、弁ハウジングにカバーを装着すると、コイルを圧縮状態にしてモータ端子とコネクタ端子との間に直列に配置することができる。従って、作業効率が良くなり、生産性を一層向上させることができる。 With such a configuration, the coil can be fixed easily and reliably at a predetermined position. And if a cover is attached to a valve housing, a coil can be made into a compression state and it can arrange in series between a motor terminal and a connector terminal. Therefore, the working efficiency is improved, and the productivity can be further improved.
　また、上記したモータ駆動式弁装置において、前記コイルの一部を収容するガイド部材が、前記コネクタ端子側又は前記モータ端子側に形成されていることが好ましい。 Moreover, in the above-mentioned motor drive type valve apparatus, it is preferable that the guide member which accommodates a part of said coil is formed in the said connector terminal side or the said motor terminal side.
　このような構成にすることによっても、コイルを所定位置に簡単かつ確実に配置することができる。そして、弁ハウジングにカバーを装着することにより、コイルを圧縮状態にしてモータ端子とコネクタ端子との間に直列に配置することができる。従って、作業効率が良くなり、生産性を一層向上させることができる。 Also with such a configuration, the coil can be easily and reliably disposed at a predetermined position. Then, by mounting the cover on the valve housing, the coil can be compressed and arranged in series between the motor terminal and the connector terminal. Therefore, the working efficiency is improved, and the productivity can be further improved.
　なお、上記した車載用ＤＣモータのノイズ低減構造及びモータ駆動式弁装置において、コイルの圧縮状態で、コイルの巻線同士が近接（又は接触）して短絡するおそれがある場合には、コイルの巻線に絶縁被膜を設ければよい。これにより、コイルでの短絡を確実に防止することができる。 In the above-mentioned noise reduction structure and motor drive type valve device of the on-vehicle DC motor, when there is a possibility that the coil windings are close (or in contact) and short circuited in the compressed state of the coil, An insulating film may be provided on the winding. Thereby, a short circuit in the coil can be reliably prevented.
　本開示の車載用ＤＣモータのノイズ低減構造及びモータ駆動式弁装置によれば、生産性の向上及び製品コストの低減を図ることができる。 According to the noise reduction structure and the motor drive type valve device of the on-vehicle DC motor of the present disclosure, the productivity can be improved and the product cost can be reduced.
実施形態に係るＥＧＲ弁の斜視図である。It is a perspective view of an EGR valve concerning an embodiment. 実施形態に係るＥＧＲ弁の断面図である。It is a sectional view of an EGR valve concerning an embodiment. 実施形態に係るノイズ低減構造の主要部を示すＥＧＲ弁の分解斜視図である。It is a disassembled perspective view of the EGR valve which shows the principal part of the noise reduction structure which concerns on embodiment. 実施形態に係るノイズ低減構造におけるコイルの接続部分を示すＥＧＲ弁の分解斜視図（カバーは一部破断）である。It is a disassembled perspective view (a cover is partially broken) of the EGR valve which shows the connection part of the coil in the noise reduction structure which concerns on embodiment. 実施形態に係るノイズ低減構造におけるコネクタ端子の全体を示すＥＧＲ弁の分解斜視図である。It is a disassembled perspective view of the EGR valve which shows the whole of the connector terminal in the noise reduction structure which concerns on embodiment.
　本開示に係る実施形態であるモータ駆動式弁装置の一例として、本実施形態では、車載用ＤＣモータのノイズ低減構造を用いている排気還流弁（ＥＧＲ弁）について説明する。自動車に搭載されたエンジンシステムでは、エンジンから排気通路へ排出される排気の一部を排気還流ガス（ＥＧＲガス）として、吸気通路へ流して各気筒へ還流させる排気還流通路（ＥＧＲ通路）が設けられている。そして、ＥＧＲ弁は、ＥＧＲガスの流量を調節するためにＥＧＲ通路に配置されている。 As an example of a motor drive type valve device which is an embodiment according to the present disclosure, in the present embodiment, an exhaust gas recirculation valve (EGR valve) using a noise reduction structure of an on-vehicle DC motor will be described. In an engine system mounted on a motor vehicle, an exhaust gas recirculation passage (EGR passage) is provided, which causes a portion of the exhaust gas discharged from the engine to the exhaust passage to flow to the intake passage as an exhaust gas recirculation gas (EGR gas) and recirculate to each cylinder. It is done. The EGR valve is disposed in the EGR passage to adjust the flow rate of the EGR gas.
＜ＥＧＲ弁の全体構成＞
　そこで、本実施形態に係るＥＧＲ弁の全体構成について、図１及び図２を参照しながら詳細に説明する。図１にＥＧＲ弁を斜視図で示し、図２にＥＧＲ弁を断面図で示す。図１及び図２に示すように、ＥＧＲ弁１は、バタフライ弁（二重偏心弁）で構成される弁部１０と、ＤＣモータ２１を内蔵するモータ部２０と、複数のギヤ（ギヤ群）で構成される減速機構３１を内蔵する減速機構部３０とを備えている。 <Overall configuration of EGR valve>
Then, the whole structure of the EGR valve which concerns on this embodiment is demonstrated in detail, referring FIG.1 and FIG.2. FIG. 1 shows the EGR valve in a perspective view, and FIG. 2 shows the EGR valve in a sectional view. As shown in FIGS. 1 and 2, the EGR valve 1 includes a valve unit 10 configured of a butterfly valve (double eccentric valve), a motor unit 20 incorporating a DC motor 21, and a plurality of gears (gear group) And a speed reduction mechanism section 30 incorporating the speed reduction mechanism 31.
　弁部１０は、ＥＧＲガスが流れる流路１１を有する管路１２を含み、流路１１の中には、弁座１３、弁体１４及び回転軸１５の先端部が配置されている。回転軸１５には、ＤＣモータ２１の回転力が減速機構を介して伝達されるようになっている。これにより、ＥＧＲ弁１では、ＤＣモータ２１の駆動により減速機構３１及び回転軸１５を介して、弁体１４が開閉される。 The valve portion 10 includes a pipe line 12 having a flow path 11 through which the EGR gas flows, and in the flow path 11, the valve seat 13, the valve body 14 and the tip of the rotary shaft 15 are disposed. The rotational force of the DC motor 21 is transmitted to the rotating shaft 15 via the speed reduction mechanism. As a result, in the EGR valve 1, the valve body 14 is opened and closed via the speed reduction mechanism 31 and the rotation shaft 15 by the drive of the DC motor 21.
　このようなＥＧＲ弁１は、主要な構成要素として、弁座１３、弁体１４及び回転軸１５の他に、ボディ４０、ＤＣモータ２１、減速機構３１を備えている。ボディ４０は、流路１１と管路１２を含むアルミ製の弁ハウジング４１と、弁ハウジング４１の開口端を閉鎖する合成樹脂製のカバー４２とを含む。弁体１４、回転軸１５及びＤＣモータ２１は、弁ハウジング４１に設けられている。カバー４２は、弁ハウジング４１に対し複数のクリップ（図示略）により固定される。このカバー４２の内側には、回転軸１５の基端に対応して配置され、弁体１４の開度（弁開度）を検出するための開度センサ４５が設けられている。そして、開度センサ４５は、弁体１４及び回転軸１５と一体的に回転するギヤに固定された磁石４６の磁界の変化を弁開度として検出する。また、カバー４２には、ＥＧＲ弁１を制御するための外部装置である電子制御装置（ＥＣＵ）に、ハーネスを介して接続するためのコネクタ４３（図３参照）が設けられている。 Such an EGR valve 1 includes, as main components, a body 40, a DC motor 21, and a speed reduction mechanism 31 in addition to the valve seat 13, the valve body 14 and the rotating shaft 15. The body 40 includes an aluminum valve housing 41 including the flow passage 11 and the conduit 12, and a synthetic resin cover 42 closing the open end of the valve housing 41. The valve body 14, the rotating shaft 15 and the DC motor 21 are provided in a valve housing 41. The cover 42 is fixed to the valve housing 41 by a plurality of clips (not shown). Inside the cover 42, an opening degree sensor 45 is provided corresponding to the base end of the rotary shaft 15, and for detecting the opening degree (valve opening degree) of the valve body 14. Then, the opening degree sensor 45 detects a change in the magnetic field of the magnet 46 fixed to the gear rotating integrally with the valve body 14 and the rotating shaft 15 as a valve opening degree. Further, the cover 42 is provided with a connector 43 (see FIG. 3) for connecting to an electronic control unit (ECU) which is an external device for controlling the EGR valve 1 via a harness.
＜ＥＧＲ弁のノイズ低減構造＞
　そして、ＥＧＲ弁１には、ＤＣモータ２１から発生するノイズを低減するためのノイズ低減構造が備わっている。そこで、このノイズ低減構造について、図３～図５を参照しながら説明する。図３に、ノイズ低減構造の主要部をＥＧＲ弁の分解斜視図で示し、図４に、ノイズ低減構造におけるコイルの接続についてカバーを一部破断したＥＧＲ弁の分解斜視図で示し、図５に、カバー内に埋設されるコネクタ端子をＥＧＲ弁の斜視図で示す。なお、図３～図５では、ＥＧＲ弁においてノイズ低減構造に関係しない部品の図示を省略している。 <Noise reduction structure of EGR valve>
The EGR valve 1 is provided with a noise reduction structure for reducing noise generated from the DC motor 21. Therefore, this noise reduction structure will be described with reference to FIGS. 3 to 5. 3 shows an exploded perspective view of the main part of the noise reduction structure in an exploded perspective view of the EGR valve, and FIG. 4 shows an exploded perspective view of the EGR valve in which the cover is partially broken for connection of coils in the noise reduction structure. 6 shows a connector terminal embedded in the cover in a perspective view of the EGR valve. Note that, in FIGS. 3 to 5, illustration of parts that are not related to the noise reduction structure in the EGR valve is omitted.
　ＥＧＲ弁１におけるノイズ低減構造は、図３～図５に示すように、チョークコイルを用いたものである。具体的には、ＤＣモータ２１に備わるモータ端子２１ａ，２１ｂと、コネクタ４３に備わるコネクタ端子４３ａ，４３ｂとの間に、バネ機能を有するコイル５０ａ，５０ｂを圧縮状態で直列に配置した構成となっている。 The noise reduction structure in the EGR valve 1 uses a choke coil as shown in FIG. 3 to FIG. Specifically, coils 50a and 50b having a spring function are arranged in series in a compressed state between motor terminals 21a and 21b of DC motor 21 and connector terminals 43a and 43b of connector 43. ing.
　ここで、コネクタ端子４３ａ～４３ｆは、図５に示すように、ＤＣモータ２１に備わるモータ端子２１ａ，２１ｂと接続する２本のコネクタ端子４３ａ，４３ｂと、開度センサ４５に接続する４本のコネクタ端子４３ｃ，４３ｄ，４３ｅ，４３ｆを含む。これらのコネクタ端子４３ａ～４３ｆは、その大部分がカバーに埋設されている。コネクタ端子４３ａ～４３ｆの一端はコネクタ４３の内側に一列に並んで配置され、他端はコイル５０ａ，５０ｂ又は開度センサ４５に接続されている。すなわち、コネクタ端子４３ａ，４３ｂの他端がコイル５０ａ，５０ｂに接続され、コネクタ端子４３ｃ～４３ｆの他端が開度センサ４５に接続されている。 Here, as shown in FIG. 5, the connector terminals 43a to 43f are two connector terminals 43a and 43b connected to the motor terminals 21a and 21b of the DC motor 21 and four connector terminals connected to the opening degree sensor 45. Connector terminals 43c, 43d, 43e, 43f are included. Most of the connector terminals 43a to 43f are embedded in the cover. One end of each of the connector terminals 43a to 43f is arranged in line inside the connector 43, and the other end is connected to the coils 50a, 50b or the opening degree sensor 45. That is, the other ends of the connector terminals 43a and 43b are connected to the coils 50a and 50b, and the other ends of the connector terminals 43c to 43f are connected to the opening degree sensor 45.
　従って、ＤＣモータ２１は、２つのコイル５０ａ，５０ｂ、２本のコネクタ端子４３ａ，４３ｂ及びハーネスを介してＥＣＵと電気的に接続される。また、開度センサ４５は、４本のコネクタ端子４３ｃ～４３ｆ及びハーネスを介してＥＣＵと電気的に接続される。これにより、ＥＣＵからＤＣモータ２１及び開度センサ４５への電源供給と、ＥＣＵとＤＣモータ２１及び開度センサ４５との各種信号の送受信とが行われ、ＥＣＵによりＥＧＲ弁１の制御が実施される。 Therefore, the DC motor 21 is electrically connected to the ECU via the two coils 50a and 50b, the two connector terminals 43a and 43b, and the harness. In addition, the opening degree sensor 45 is electrically connected to the ECU via the four connector terminals 43c to 43f and a harness. As a result, power supply from the ECU to the DC motor 21 and the opening degree sensor 45 and transmission and reception of various signals between the ECU and the DC motor 21 and the opening degree sensor 45 are performed, and control of the EGR valve 1 is performed by the ECU. Ru.
　そして、図４及び図５に示すように、コネクタ端子４３ａ，４３ｂの他端部には平面部４４ａ，４４ｂが形成されており、この平面部４４ａ，４４ｂは、カバー４２を弁ハウジング４１に装着した状態において、モータ端子２１ａ，２１ｂの真上に位置するように配置されている。平面部４４ａ，４４ｂは、カバー４２に埋設されず露出している。そして、モータ端子２１ａ，２１ｂとコネクタ端子４３ａ，４３ｂの平面部４４ａ，４４ｂとの間にコイル５０ａ，５０ｂが配置されている。 As shown in FIGS. 4 and 5, flat portions 44a and 44b are formed at the other ends of the connector terminals 43a and 43b, and the flat portions 44a and 44b attach the cover 42 to the valve housing 41. In the above state, the motor terminals 21a and 21b are disposed immediately above. The flat portions 44a and 44b are not embedded in the cover 42 and are exposed. The coils 50a and 50b are disposed between the motor terminals 21a and 21b and the flat portions 44a and 44b of the connector terminals 43a and 43b.
　本実施形態では、コイル５０ａ，５０ｂの一端は、モータ端子２１ａ，２１ｂに対してそれぞれ圧入され、それぞれのコイル内径部分にてモータ端子に接触している。そのため、コイル５０ａ，５０ｂの一端が直接、モータ端子２１ａ，２１ｂに対して、簡単かつ確実に嵌合されて固定される。一方、コイル５０ａ，５０ｂの他端は、コネクタ端子４３ａ，４３ｂの平面部４４ａ，４４ｂに接触している。そして、コネクタ端子４３ａ，４３ｂの平面部４４ａ，４４ｂの配置位置には、コイル５０ａ，５０ｂの他端側の一部を収容するガイド部材５１が形成されている。このガイド部材５１は、円筒形状であり、カバー４２に一体成形されている。そのため、カバー４２を弁ハウジング４１に装着すると、コイル５０ａ，５０ｂの他端側の一部がガイド部材５１内に収容される。従って、ガイド部材５１により、コイル５０ａ，５０ｂの他端が所定位置、つまりコネクタ端子４３ａ，４３ｂの平面部４４ａ，４４ｂに簡単かつ確実に固定される。 In the present embodiment, one end of each of the coils 50a and 50b is press-fit to each of the motor terminals 21a and 21b, and each of the coil inner diameter portions is in contact with the motor terminal. Therefore, one ends of the coils 50a and 50b are directly and easily fitted to the motor terminals 21a and 21b simply and securely. On the other hand, the other ends of the coils 50a and 50b are in contact with the flat portions 44a and 44b of the connector terminals 43a and 43b. And the guide member 51 which accommodates one part by the side of the other end of coil 50a, 50b is formed in the arrangement position of plane part 44a, 44b of connector terminal 43a, 43b. The guide member 51 has a cylindrical shape and is integrally formed on the cover 42. Therefore, when the cover 42 is attached to the valve housing 41, a part of the other end side of the coils 50 a and 50 b is accommodated in the guide member 51. Accordingly, the other end of the coil 50a, 50b is fixed to the predetermined position, that is, the flat portion 44a, 44b of the connector terminal 43a, 43b simply and surely by the guide member 51.
　そして、コイル５０ａ，５０ｂは、バネ機構を有しており、圧縮状態でモータ端子２１ａ，２１ｂとコネクタ端子４３ａ，４３ｂとの間に設けられている。つまり、本実施形態では、コイル５０ａ，５０ｂをモータ端子２１ａ，２１ｂに圧入し、弁ハウジング４１にカバー４２を装着するだけで、コイル５０ａ，５０ｂを圧縮状態でモータ端子２１ａ，２１ｂとコネクタ端子４３ａ，４３ｂとの間に直列に設けることができる。これにより、コイル５０ａ，５０ｂは、コネクタ端子４３ａ，４３ｂの平面部４４ａ，４４ｂに対して接触状態を維持することができ、モータ端子２１ａ，２１ｂとコネクタ端子４３ａ，４３ｂとを電気的に接続することができる。これにより、従来のＥＧＲ弁のように、モータ端子とコネクタ端子とを接続するためにカバーに設けていた接続（嵌合）部品が不要になる。 The coils 50a and 50b have a spring mechanism, and are provided in a compressed state between the motor terminals 21a and 21b and the connector terminals 43a and 43b. That is, in the present embodiment, the coils 50a and 50b are press-fitted to the motor terminals 21a and 21b, and the cover 42 is simply attached to the valve housing 41 to compress the coils 50a and 50b in the compressed state. , 43b may be provided in series. As a result, the coils 50a and 50b can maintain contact with the flat portions 44a and 44b of the connector terminals 43a and 43b, and electrically connect the motor terminals 21a and 21b to the connector terminals 43a and 43b. be able to. As a result, unlike the conventional EGR valve, the connection (fitting) component provided on the cover for connecting the motor terminal and the connector terminal becomes unnecessary.
　なお、本実施形態では、コイル５０ａ，５０ｂに絶縁被膜は設けていないが、コイル５０ａ，５０ｂの圧縮状態において、コイル５０ａ，５０ｂの巻線同士が近接（又は接触）して短絡するおそれがある場合には、コイル５０ａ，５０ｂの巻線に絶縁被膜を設ければよい。これにより、コイル５０ａ，５０ｂでの短絡を確実に防止することができる。 In the present embodiment, the insulating films are not provided on the coils 50a and 50b, but in a compressed state of the coils 50a and 50b, there is a possibility that the windings of the coils 50a and 50b approach (or contact) to cause short circuit. In this case, an insulating film may be provided on the windings of the coils 50a and 50b. Thereby, the short circuit in coil 50a, 50b can be prevented reliably.
　このように、本実施形態のＥＧＲ弁１によれば、モータ端子２１ａ，２１ｂとコネクタ端子４３ａ，４３ｂとの間に、バネ機能を有するコイル５０ａ，５０ｂが圧縮状態で直列に配置されている。これにより、コイル５０ａ，５０ｂが、ＤＣモータ２１から発生するノイズを低減するためのインダクタンスとしての機能と、モータ端子２１ａ，２１ｂとコネクタ端子４３ａ，４３ｂを電気的に接続する接続部品としての機能とを兼ね備える。 Thus, according to the EGR valve 1 of the present embodiment, the coils 50a and 50b having a spring function are disposed in series in a compressed state between the motor terminals 21a and 21b and the connector terminals 43a and 43b. Thus, the coils 50a and 50b have a function as an inductance for reducing noise generated from the DC motor 21 and a function as a connection part for electrically connecting the motor terminals 21a and 21b and the connector terminals 43a and 43b. Combine.
　そのため、コイル５０ａ，５０ｂを設けるためにコネクタ端子４３ａ，４３ｂを分割する必要がなく、またコイル５０ａ，５０ｂを溶接やはんだ付け等によって接続する必要もなくなる。また、モータ端子とコネクタ端子とを接続するための接続（嵌合）部品が不要となる。従って、ＥＧＲ弁１によれば、部品点数及び工程数の削減を図ることができるため、生産性が向上するとともに、製品コスト面でも有利となる。 Therefore, there is no need to divide the connector terminals 43a and 43b in order to provide the coils 50a and 50b, and it is not necessary to connect the coils 50a and 50b by welding, soldering or the like. In addition, connection (fitting) components for connecting the motor terminal and the connector terminal are not necessary. Therefore, according to the EGR valve 1, the number of parts and the number of processes can be reduced, so that the productivity is improved and the product cost is also advantageous.
　なお、コイルのインダクタンスは、コイルの形状（巻数やコイル径）により変化するため、使用するＤＣモータに応じてノイズ低減効果が最も得られるインダクタンスとなるコイル形状を、コイルの配置スペース等を考慮して決定すればよい。 In addition, since the inductance of the coil changes depending on the shape of the coil (the number of turns and the coil diameter), the coil shape that provides the noise reduction effect most can be obtained according to the DC motor used. It should be decided.
　そして、本実施形態のＥＧＲ弁１では、ＤＣモータ２１から発生するノイズが、モータ端子２１ａ，２１ｂとコネクタ端子４３ａ，４３ｂとの間に直列に配置されたコイル５０ａ，５０ｂにより低減される。このため、ＤＣモータ２１で発生するノイズが、コネクタ端子４３ａ～４３ｆにノイズが載ることがなくなる。これにより、ＤＣモータ２１から発生するノイズにより、開度センサ４５が誤出力したり、ＤＣモータ２１の制御性が悪化することを防止することができる。 And, in the EGR valve 1 of the present embodiment, the noise generated from the DC motor 21 is reduced by the coils 50a, 50b arranged in series between the motor terminals 21a, 21b and the connector terminals 43a, 43b. For this reason, the noise generated by the DC motor 21 is prevented from being applied to the connector terminals 43a to 43f. As a result, it is possible to prevent the opening sensor 45 from outputting a false output or the deterioration of the controllability of the DC motor 21 due to the noise generated from the DC motor 21.
　なお、上記した実施の形態は単なる例示にすぎず、本開示を何ら限定するものではなく、その要旨を逸脱しない範囲内で種々の改良、変形が可能であることはもちろんである。例えば、上記の実施形態では、コイル５０ａ，５０ｂをコネクタ端子４３ａ，４３ｂに接触させているが、コネクタ端子４３ａ，４３ｂにコイル５０ａ，５０ｂを圧入して接触させることもできる。この場合には、コネクタ端子４３ａ，４３ｂの端部をＤＣモータ２１に向けて折り曲げればよい。このようにしてコネクタ端子４３ａ，４３ｂにコイル５０ａ，５０ｂを圧入する場合、上記の実施形態のようにモータ端子２１ａ，２１ｂに対してコイル５０ａ，５０ｂを圧入してもよいし、モータ端子２１ａ，２１ｂを折り曲げて平面部を設け、その平面部にコイル５０ａ，５０ｂを接触させるようにしてもよい。 The embodiment described above is merely an example, and does not limit the present disclosure in any way, and it goes without saying that various improvements and modifications can be made without departing from the scope of the invention. For example, although coil 50a, 50b is made to contact connector terminal 43a, 43b in said embodiment, coil 50a, 50b can be press-fit and made to contact connector terminal 43a, 43b. In this case, the ends of the connector terminals 43a and 43b may be bent toward the DC motor 21. When the coils 50a and 50b are press-fit into the connector terminals 43a and 43b in this manner, the coils 50a and 50b may be press-fit to the motor terminals 21a and 21b as in the above embodiment. 21b may be bent to provide a flat portion, and the coils 50a and 50b may be brought into contact with the flat portion.
　また、上記の実施形態では、ガイド部材５１をコネクタ端子４３ａ，４３ｂ側に設けているが、ガイド部材５１をモータ端子２１ａ，２１ｂ側に設けることもできる。ガイド部材５１は、コネクタ端子４３ａ，４３ｂ側又はモータ端子２１ａ，２１ｂ側のいずれか一方に設ければよいが、コネクタ端子４３ａ，４３ｂ側とモータ端子２１ａ，２１ｂ側の両側に設けることもできる。 Further, in the above embodiment, the guide member 51 is provided on the side of the connector terminals 43a and 43b, but the guide member 51 may be provided on the side of the motor terminals 21a and 21b. The guide member 51 may be provided on either the connector terminal 43a, 43b side or the motor terminal 21a, 21b side, but may be provided on both the connector terminal 43a, 43b side and the motor terminal 21a, 21b side.
　また、上記の実施形態では、モータ駆動式弁装置として排気還流弁（ＥＧＲ弁）を例示したが、本開示はこれ以外の弁装置（例えば、電子スロットル装置、吸気切替装置、排気切替装置など）にも適用することができる。 Further, in the above embodiment, the exhaust gas recirculation valve (EGR valve) is exemplified as the motor drive type valve device, but the present disclosure relates to other valve devices (for example, electronic throttle device, intake switching device, exhaust switching device, etc.) Can also be applied.
　また、上記の実施形態では、本開示のノイズ低減構造を排気還流弁（ＥＧＲ弁）に適用した場合を例示したが、本開示はこれ以外に車載用ＤＣモータを備える車載電動製品にも適用することができる。 Moreover, although the case where the noise reduction structure of this indication was applied to the exhaust gas recirculation valve (EGR valve) was illustrated in said embodiment, this indication is applied also to the in-vehicle electric product provided with a car-mounted DC motor besides this. be able to.
１　　　ＥＧＲ弁
１４　　弁体
２１　　ＤＣモータ
２１ａ，２１ｂ　モータ端子
４１　　弁ハウジング
４２　　カバー
４３　　コネクタ
４３ａ～４３ｆ　コネクタ端子
４５　　開度センサ
５０ａ，５０ｂ　コイル
５１　　ガイド部材 DESCRIPTION OF SYMBOLS 1 EGR valve 14 Valve body 21 DC motor 21a, 21b Motor terminal 41 Valve housing 42 Cover 43 Connector 43a-43f Connector terminal 45 Opening degree sensor 50a, 50b Coil 51 Guide member

Claims (4)

  1. 　車載用ＤＣモータから発生するノイズを低減するノイズ低減構造において、
    　前記ＤＣモータに備わるモータ端子と、前記ＤＣモータと外部装置を接続するためのコネクタに備わるコネクタ端子との間に、バネ機能を有するコイルを圧縮状態で直列に配置している
    ことを特徴とする車載用ＤＣモータのノイズ低減構造。     In the noise reduction structure that reduces the noise generated from the automotive DC motor,
    A coil having a spring function is disposed in series in a compressed state between a motor terminal provided to the DC motor and a connector terminal provided to a connector for connecting the DC motor and an external device. Noise reduction structure for automotive DC motors.
  2. 　ＤＣモータにより弁体を開閉駆動するとともに、前記弁体の開度をセンサにより検出しながら前記弁体の開度を目標開度に制御するモータ駆動式弁装置において、
    　前記弁体及び前記ＤＣモータが設けられる弁ハウジングと、
    　弁装置と外部装置を接続するためのコネクタが設けられ、前記弁ハウジングに装着されるカバーと、
    　バネ機能を有するコイルと、を備え、
    　前記コイルは、前記ＤＣモータに備わるモータ端子と前記コネクタに備わるコネクタ端子との間に、圧縮状態で直列に配置されている
    ことを特徴とするモータ駆動式弁装置。     In a motor-driven valve device, the valve body is opened and closed by a DC motor, and the opening degree of the valve body is controlled by a sensor to control the opening degree of the valve body to a target opening degree.
    A valve housing provided with the valve body and the DC motor;
    A connector for connecting a valve device and an external device, and a cover mounted on the valve housing;
    And a coil having a spring function,
    The motor driven valve device, wherein the coil is disposed in series in a compressed state between a motor terminal provided to the DC motor and a connector terminal provided to the connector.
  3. 　請求項２に記載するモータ駆動式弁装置において、
    　前記コイルは、前記モータ端子又は前記コネクタ端子に直接嵌合し、コイル内径部分にて前記モータ端子又は前記コネクタ端子に接触して固定されている
    ことを特徴とするモータ駆動式弁装置。     The motor driven valve device according to claim 2.
    The motor driven valve device, wherein the coil is directly fitted to the motor terminal or the connector terminal, and is fixed in contact with the motor terminal or the connector terminal at a coil inner diameter portion.
  4. 　請求項２又は請求項３に記載するモータ駆動式弁装置において、
    　前記コイルの一部を収容するガイド部材が、前記コネクタ端子側又は前記モータ端子側に形成されている
    ことを特徴とするモータ駆動式弁装置。     The motor driven valve device according to claim 2 or 3.
    A motor driven valve device characterized in that a guide member for housing a part of the coil is formed on the connector terminal side or the motor terminal side.
PCT/JP2018/041156 2018-01-10 2018-11-06 Noise reduction structure for in-vehicle dc motor and motor drive-type valve device WO2019138672A1 (en)

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JP7321110B2 (en) * 2020-02-05 2023-08-04 愛三工業株式会社 electric valve device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003322043A (en) * 2002-04-30 2003-11-14 Mikuni Corp Electric connecting structure of component, ecu (electronic control unit), and engine control device
JP2007292043A (en) * 2006-03-30 2007-11-08 Aisan Ind Co Ltd Electronic throttle device
US20090101104A1 (en) * 2006-11-13 2009-04-23 Holley Performance Products, Inc. Air valve and method of use
JP2016037902A (en) * 2014-08-07 2016-03-22 株式会社デンソー Electric actuator device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003322043A (en) * 2002-04-30 2003-11-14 Mikuni Corp Electric connecting structure of component, ecu (electronic control unit), and engine control device
JP2007292043A (en) * 2006-03-30 2007-11-08 Aisan Ind Co Ltd Electronic throttle device
US20090101104A1 (en) * 2006-11-13 2009-04-23 Holley Performance Products, Inc. Air valve and method of use
JP2016037902A (en) * 2014-08-07 2016-03-22 株式会社デンソー Electric actuator device

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