WO2019138672A1 - Structure de réduction de bruit pour moteur à courant continu embarqué et dispositif de soupape de type motorisé - Google Patents

Structure de réduction de bruit pour moteur à courant continu embarqué et dispositif de soupape de type motorisé 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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WO
WIPO (PCT)
Prior art keywords
motor
connector
coil
terminal
valve
Prior art date
Application number
PCT/JP2018/041156
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English (en)
Japanese (ja)
Inventor
真 間瀬
Original Assignee
愛三工業株式会社
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Filing date
Publication date
Application filed by 愛三工業株式会社 filed Critical 愛三工業株式会社
Publication of WO2019138672A1 publication Critical patent/WO2019138672A1/fr

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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)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Motor Or Generator Frames (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

L'invention concerne une structure de réduction de bruit destinée à réduire le bruit généré par un moteur à courant continu embarqué, des bobines ayant une fonction de ressort étant disposées en série dans un état comprimé entre une borne de moteur disposée sur le moteur à courant continu et une borne de raccord disposée sur un raccord pour raccorder un dispositif externe au moteur à courant continu.
PCT/JP2018/041156 2018-01-10 2018-11-06 Structure de réduction de bruit pour moteur à courant continu embarqué et dispositif de soupape de type motorisé WO2019138672A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018001666A JP2019120218A (ja) 2018-01-10 2018-01-10 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
JP2018-001666 2018-01-10

Publications (1)

Publication Number Publication Date
WO2019138672A1 true WO2019138672A1 (fr) 2019-07-18

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PCT/JP2018/041156 WO2019138672A1 (fr) 2018-01-10 2018-11-06 Structure de réduction de bruit pour moteur à courant continu embarqué et dispositif de soupape de type motorisé

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WO (1) WO2019138672A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7321110B2 (ja) * 2020-02-05 2023-08-04 愛三工業株式会社 電動式バルブ装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003322043A (ja) * 2002-04-30 2003-11-14 Mikuni Corp 部品の電気的接続構造、ＥＣＵ（ＥｌｅｃｔｒｏｎｉｃＣｏｎｔｒｏｌＵｎｉｔ）およびエンジン制御装置
JP2007292043A (ja) * 2006-03-30 2007-11-08 Aisan Ind Co Ltd 電子スロットル装置
US20090101104A1 (en) * 2006-11-13 2009-04-23 Holley Performance Products, Inc. Air valve and method of use
JP2016037902A (ja) * 2014-08-07 2016-03-22 株式会社デンソー 電動アクチュエータ装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003322043A (ja) * 2002-04-30 2003-11-14 Mikuni Corp 部品の電気的接続構造、ＥＣＵ（ＥｌｅｃｔｒｏｎｉｃＣｏｎｔｒｏｌＵｎｉｔ）およびエンジン制御装置
JP2007292043A (ja) * 2006-03-30 2007-11-08 Aisan Ind Co Ltd 電子スロットル装置
US20090101104A1 (en) * 2006-11-13 2009-04-23 Holley Performance Products, Inc. Air valve and method of use
JP2016037902A (ja) * 2014-08-07 2016-03-22 株式会社デンソー 電動アクチュエータ装置

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