WO2023199370A1 - Electronic control device - Google Patents

Electronic control device Download PDF

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Publication number
WO2023199370A1
WO2023199370A1 PCT/JP2022/017465 JP2022017465W WO2023199370A1 WO 2023199370 A1 WO2023199370 A1 WO 2023199370A1 JP 2022017465 W JP2022017465 W JP 2022017465W WO 2023199370 A1 WO2023199370 A1 WO 2023199370A1
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WO
WIPO (PCT)
Prior art keywords
coil wire
electronic control
control device
case
motor housing
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PCT/JP2022/017465
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French (fr)
Japanese (ja)
Inventor
友宏 福田
晴晃 元田
Original Assignee
日立Astemo株式会社
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Priority to PCT/JP2022/017465 priority Critical patent/WO2023199370A1/en
Publication of WO2023199370A1 publication Critical patent/WO2023199370A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes

Definitions

  • the present invention relates to an electronic control device.
  • Vehicles are equipped with electronic control devices that use brushless motors, such as valve timing adjustment devices, electric brakes, electric water pumps, electric oil pumps, electric power steering, and electric throttle valves.
  • the electric motor of such an electronic control device is electrically connected to an electronic control section representing an engine control unit (hereinafter referred to as ECU) in order to supply electric power to a stator coil housed in a motor housing.
  • ECU engine control unit
  • the coil wires of an electric motor and the circuit board of an electronic control unit are electrically connected using an intermediate member such as a bus bar.
  • an intermediate member such as a bus bar.
  • the bus bar and the coil wire are electrically connected by caulking or fusing.
  • Patent Document 1 discloses a lead wire that is introduced into the housing of an electric motor and supplies power to the electric motor, and a lead wire that is disposed inside the housing and holds the lead wire inside the housing between the lead wire and the housing. A technique having a holding member is described. In the technique described in Patent Document 1, the coil wires of the electric motor are connected with lead wires.
  • the object of the present invention is to provide an electronic control device that can be downsized in consideration of the above-mentioned problems.
  • an electronic control device includes an electric motor having a motor housing, a coil wire housed in the motor housing, a circuit board to which the connecting end of the coil wire is connected, and a circuit board.
  • the motor housing includes a case on which a board is placed on one side and covers an opening of the motor housing.
  • the connecting end portion is bent relative to the winding portion of the coil wire and pulled out toward the opening of the motor housing.
  • the case has an opening hole through which the connecting end is inserted. Further, on the other surface of the case opposite to the one surface on which the circuit board is placed, a groove is formed which communicates with the opening hole and into which the winding on the connection end side of the coil wire is fitted.
  • FIG. 1 is an exploded perspective view showing an electronic control device according to an embodiment.
  • FIG. 1 is a cross-sectional perspective view showing an electronic control device according to an embodiment.
  • FIG. 1 is a sectional view showing an electronic control device according to an embodiment.
  • FIG. 2 is a plan view showing a case of an electronic control device according to an embodiment.
  • FIG. 5 is a plan view of the case of the electronic control device according to the embodiment, viewed from the opposite side to FIG. 4.
  • FIG. 6A to 6C are explanatory diagrams showing a coil wire correction operation in the electronic control device according to the embodiment.
  • FIG. 1 is an exploded perspective view showing an electronic control device.
  • FIG. 2 is a cross-sectional perspective view showing the electronic control device, and
  • FIG. 3 is a cross-sectional view showing the electronic control device.
  • an electric valve timing adjustment device that controls the opening and closing timing of an intake valve provided in a vehicle engine is applied as an example of an electronic control device.
  • This electric valve timing adjustment device is installed in the engine compartment of a vehicle.
  • the electronic control device 1 includes an electronic control section 2 representing an engine control unit (ECU) and an electric motor 3.
  • ECU engine control unit
  • the electronic control unit 2 controls the drive of the electric motor 3 based on control commands given from other electronic control devices mounted on the vehicle.
  • the electric motor 3 functions as a drive source for the electronic control device 1, which is a valve timing adjustment device.
  • a motor shaft, which is an output shaft of the electric motor 3, is connected to a reduction gear (not shown). Thereby, the reduction gear rotates according to the rotational direction and rotational speed of the electric motor 3.
  • the reduction gear is connected to a camshaft having a cam (not shown) for opening and closing an intake valve.
  • the reduction gear transmits the driving force of the electric motor 3 to the camshaft.
  • the electric motor 3 has a container-shaped motor housing 3a.
  • the motor housing 3a is formed into a substantially cylindrical shape, with one axial surface open and the other axial surface closed.
  • a plurality of coil wires 7 representing stator coils are accommodated in this motor housing 3a.
  • the plurality of coil wires 7 are arranged side by side along the circumferential direction of the motor housing 3a.
  • the motor housing 3a is provided with an insulator 10 indicating a coil holding portion.
  • a coil wire 7 is wound around the insulator 10. The coil wire 7 is then held by the insulator 10. Further, the connecting end 7a of the coil wire 7 is drawn out toward the opening of the motor housing 3a. The connecting end portion 7a is bent from the winding portion of the coil wire 7.
  • the electronic control unit 2 is arranged so as to close the opening of the motor housing 3a of the electric motor 3.
  • the electronic control unit 2 includes a circuit board 4, a substantially flat case 5, and a cover 6.
  • the circuit board 4 is placed on one surface of the case 5. Further, the circuit board 4 is provided with a connecting portion 11 .
  • a connecting end 7a of a coil wire 7 that is inserted through an opening 8 provided in a case 5, which will be described later, is connected to the connecting portion 11.
  • the connecting portion 11 and the connecting end 7a of the coil wire 7 are connected by soldering. Thereby, the coil wire 7 and the circuit board 4 are electrically connected. Power is then supplied to the coil wire 7 via the circuit board 4.
  • the case 5 is attached to the electric motor 3 so as to cover the opening of the motor housing 3a of the electric motor 3. At this time, the other surface of the case 5 opposite to the one surface on which the circuit board 4 is placed faces the opening of the motor housing 3a.
  • the circuit board 4 and case 5 are then fixed to the electric motor 3 using fixing screws or the like. Further, one surface of the case 5 and the circuit board 4 are covered with a cover 6.
  • the cover 6 covers one side of the case 5 on which the circuit board 4 is placed. Then, the cover 6 is fixed to the case 5 using fixing screws or the like.
  • the case 5 and the cover 6 constitute a waterproof case that accommodates the circuit board 4 in a watertight space.
  • FIG. 4 is a plan view showing the case 5.
  • FIG. 5 is a plan view of the case 5 viewed from the opposite side to that shown in FIG.
  • the case 5 is formed with a plurality of opening holes 8 through which the connection ends 7a of the coil wires 7 are inserted.
  • the opening hole 8 is a through hole that penetrates from one side of the case 5 to the other side.
  • the opening hole 8 is formed at a position facing the connection portion 11 of the circuit board 4 placed on the case 5.
  • the connecting end 7a of the coil wire 7 is inserted into the opening hole 8.
  • a groove portion 9 is formed on the other surface of the case 5.
  • the groove portion 9 is a recessed portion recessed from the other surface of the case 5 toward one surface.
  • the groove portion 9 is formed continuously at the end of the opening hole 8 on the other side of the case 5 . Therefore, the groove portion 9 communicates with the end of the opening hole 8 . Furthermore, the groove portion 9 extends a predetermined length from the end of the opening hole 8 along the winding direction of the coil wire 7 .
  • the depth of the groove portion 9 is formed to be shallower than the diameter of the coil wire 7. A portion of the coil wire 7 fits into this groove 9.
  • the groove portion 9 holds the coil wire 7 together with the insulator 10.
  • the width of the groove portion 9 is formed to be slightly larger than the coil wire 7 in consideration of component tolerances of the coil wire 7.
  • the corner portion 12 in the groove portion 9 that connects with the end portion of the opening hole 8 has an R shape. Furthermore, the corner portion 12 of the groove portion 9 abuts a portion of the coil wire 7 where the connecting end portion 7a is bent.
  • the case 5 having the above-described configuration is made of resin or an insulated metal material.
  • FIGS. 6A to 6C are explanatory diagrams showing the correcting operation of the coil wire 7.
  • connection end 7a of the coil wire 7 is tilted diagonally with respect to the winding portion of the coil wire 7 due to the stress of the coil wire 7 itself. It's bent. Therefore, the winding on the connection end 7a side of the coil wire 7 is in a floating state with respect to the winding portion.
  • connection end 7a of the coil wire 7 is inserted through the opening hole 8 of the case 5, and the connection end 11 of the circuit board 4 is inserted. reach. Further, a portion of the coil wire 7 on the connection end 7 a side fits into the groove 9 of the case 5 . Then, the bending portion of the connecting end 7 a of the coil wire 7 contacts the corner 12 of the groove 9 .
  • connection end 7a side of the coil wire 7 is pushed down toward the winding part of the coil wire 7, and the connection end 7a is pulled out approximately perpendicularly to the winding part of the coil wire 7. Can be done.
  • the groove portion 9 of the case 5 can correct the floating state of the coil wire 7 from the winding portion.
  • the distance between the case 5 and the motor housing 3a can be narrowed, and the motor housing 3a and the electronic control device 1 can be downsized as a whole.
  • the corner portion 12 of the groove portion 9, which the bent portion of the coil wire 7 comes into contact with is formed in an R shape. Thereby, it is possible to prevent the load from concentrating on the part where the coil wire 7 is bent, and to reduce the stress applied to the connection part 11 of the circuit board 4 to which the connection end 7a of the coil wire 7 is soldered. Can be done.
  • the depth of the groove 9 into which the coil wire 7 fits is formed to be shallower than the diameter of the coil wire 7. Therefore, the coil wire 7 is held between the groove portion 9 and the insulator 10 that holds the coil wire 7. Thereby, movement in the axial direction and the radial direction in the coil wire 7 can be suppressed. As a result, the stress applied to the connecting portion 11 that connects to the connecting end 7a of the coil wire 7 can be reduced.
  • the width of the groove portion 9 is formed to be slightly larger than the coil wire 7, the vibration of the coil wire 7 can be suppressed by the groove portion 9.
  • the width of the groove 9 can also reduce the stress applied to the connecting portion 11 of the circuit board 4 that is connected to the connecting end 7a of the coil wire 7.
  • the connection end portion 7a of the coil wire 7 and the connection portion 11 of the circuit board 4 can be soldered. reliability can be ensured. Thereby, the coil wire 7 and the circuit board 4 can be connected without using an intermediate member such as a bus bar. As a result, a space for accommodating an intermediate member within the motor housing 3a is not required, so that the electronic control device 1 can be made smaller and the number of parts can also be reduced.
  • a valve timing adjustment device is applied as an example of an electronic control device
  • the present invention is not limited to this.
  • the electronic control device various other electronic control devices such as an in-vehicle motor using a brushless motor, an electric brake, an electric water pump, an electric oil pump, an electric power steering, an electric throttle valve, etc. are applied.
  • the present invention is effective as an electronic control device used under vibration conditions.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

This electronic control device comprises: an electric motor having a motor housing; a coil line; a circuit board; and a case. A connection terminal is bent towards a wound section of the coil line and is drawn out towards an opening of the motor housing. The case has formed therein an opening through which the connection terminal passes. In a second surface of the case opposite a first surface on which the circuit board is mounted, a groove is formed which communicates with the opening and in which a winding on the connection terminal side of the coil line fits.

Description

電子制御装置electronic control unit
　本発明は、電子制御装置に関する。 The present invention relates to an electronic control device.
　車両には、バルブタイミング調整装置や電動ブレーキ、電動ウォータポンプ、電動オイルポンプ、電動パワーステアリング、電動スロットルブルブなどのブラシレスモータを使った電子制御装置が搭載されている。このような電子制御装置の電動モータは、モータハウジング内に収容されたステータコイルに電力を供給するため、エンジンコンロールユニット(以下、ＥＣＵ)を示す電子制御部と電気的に接続されている。 Vehicles are equipped with electronic control devices that use brushless motors, such as valve timing adjustment devices, electric brakes, electric water pumps, electric oil pumps, electric power steering, and electric throttle valves. The electric motor of such an electronic control device is electrically connected to an electronic control section representing an engine control unit (hereinafter referred to as ECU) in order to supply electric power to a stator coil housed in a motor housing.
　一般的に、電動モータのコイル線と、電子制御部の回路基板とは、バスバー等の中間部材を用いて電気的に接続されている。なお、バスバーとコイル線は、カシメ又はヒュージングで電気的に接続されている。 Generally, the coil wires of an electric motor and the circuit board of an electronic control unit are electrically connected using an intermediate member such as a bus bar. Note that the bus bar and the coil wire are electrically connected by caulking or fusing.
　電動モータのコイル線と回路基板とを接続する技術としては、例えば、特許文献１に記載されているようなものがある。特許文献１には、電動モータのハウジング内に導入され、電動モータに対し電力を供給するリード線と、ハウジング内に配設され、ハウジング内のリード線をハウジングとの間にて挟持するリード線保持部材とを有する技術が記載されている。そして、特許文献１に記載された技術では、電動モータのコイル線をリード線で結線している。 As a technique for connecting the coil wire of an electric motor and a circuit board, there is, for example, one described in Patent Document 1. Patent Document 1 discloses a lead wire that is introduced into the housing of an electric motor and supplies power to the electric motor, and a lead wire that is disposed inside the housing and holds the lead wire inside the housing between the lead wire and the housing. A technique having a holding member is described. In the technique described in Patent Document 1, the coil wires of the electric motor are connected with lead wires.
特開２００３－１３４７１５号公報Japanese Patent Application Publication No. 2003-134715
　しかしながら、特許文献１に記載された技術で、モータハウジング内にリード線や、リード線を保持するリード線保持部材を設ける必要があった。そのため、特許文献１に記載された技術では、リード線やリード線保持部を収容する空間をモータハウジング内に設けることで、モータハウジングや装置全体が大型化する、という問題を有していた。 However, with the technique described in Patent Document 1, it was necessary to provide a lead wire and a lead wire holding member for holding the lead wire inside the motor housing. Therefore, the technique described in Patent Document 1 has a problem in that by providing a space in the motor housing to accommodate the lead wire and the lead wire holding portion, the motor housing and the entire device become larger.
　本目的は、上記の問題点を考慮し、小型化を図ることができる電子制御装置を提供することにある。 The object of the present invention is to provide an electronic control device that can be downsized in consideration of the above-mentioned problems.
　上記課題を解決し、目的を達成するため、電子制御装置は、モータハウジングを有する電動モータと、モータハウジングに収容されるコイル線と、コイル線の接続端部が接続される回路基板と、回路基板が一面に載置されるとともに、モータハウジングの開口を覆うケースと、を備えている。
　接続端部は、コイル線の巻回部に対して屈曲し、モータハウジングの開口に向けて引き出されている。ケースには、接続端部が挿通する開口孔が形成されている。そして、ケースにおける回路基板が載置される一面とは反対側の他面には、開口孔に連通し、コイル線における接続端部側の巻線が嵌まり込む溝部が形成されている。 In order to solve the above problems and achieve the purpose, an electronic control device includes an electric motor having a motor housing, a coil wire housed in the motor housing, a circuit board to which the connecting end of the coil wire is connected, and a circuit board. The motor housing includes a case on which a board is placed on one side and covers an opening of the motor housing.
The connecting end portion is bent relative to the winding portion of the coil wire and pulled out toward the opening of the motor housing. The case has an opening hole through which the connecting end is inserted. Further, on the other surface of the case opposite to the one surface on which the circuit board is placed, a groove is formed which communicates with the opening hole and into which the winding on the connection end side of the coil wire is fitted.
　上記構成の電子制御装置によれば、小型化を図ることができる。 According to the electronic control device having the above configuration, it is possible to achieve miniaturization.
実施の形態例にかかる電子制御装置を示す分解斜視図である。FIG. 1 is an exploded perspective view showing an electronic control device according to an embodiment. 実施の形態例にかかる電子制御装置を示す断面斜視図である。FIG. 1 is a cross-sectional perspective view showing an electronic control device according to an embodiment. 実施の形態例にかかる電子制御装置を示す断面図である。FIG. 1 is a sectional view showing an electronic control device according to an embodiment. 実施の形態例にかかる電子制御装置のケースを示す平面図である。FIG. 2 is a plan view showing a case of an electronic control device according to an embodiment. 実施の形態例にかかる電子制御装置のケースを図４とは反対側から見た平面図である。FIG. 5 is a plan view of the case of the electronic control device according to the embodiment, viewed from the opposite side to FIG. 4. FIG. 図６Ａから図６Ｃは実施の形態例にかかる電子制御装置におけるコイル線の矯正動作を示す説明図である。6A to 6C are explanatory diagrams showing a coil wire correction operation in the electronic control device according to the embodiment.
　以下、電子制御装置の実施の形態例について、図１～図６を参照して説明する。なお、各図において共通の部材には、同一の符号を付している。 Hereinafter, embodiments of the electronic control device will be described with reference to FIGS. 1 to 6. Note that common members in each figure are given the same reference numerals.
１．実施の形態例
１－１．電子制御装置の構成
　まず、実施の形態例（以下、「本例」という。）にかかる電子制御装置の構成について図１から図５を参照して説明する。
　図１は、電子制御装置を示す分解斜視図である。図２は、電子制御装置を示す断面斜視図、図３は、電子制御装置を示す断面図である。 1. Embodiment 1-1. Configuration of Electronic Control Device First, the configuration of an electronic control device according to an embodiment (hereinafter referred to as "this example") will be described with reference to FIGS. 1 to 5.
FIG. 1 is an exploded perspective view showing an electronic control device. FIG. 2 is a cross-sectional perspective view showing the electronic control device, and FIG. 3 is a cross-sectional view showing the electronic control device.
　本例では、電子制御装置の一例として、車両のエンジンに設けられた吸気バルブの開閉タイミングをコントロールする電動バルブタイミング調整装置を適用した例を説明する。この電動バルブタイミング調整装置は、車両のエンジンルームなどに搭載される。図１に示すように、電子制御装置１は、エンジンコンロールユニット（ＥＣＵ）を示す電子制御部２と、電動モータ３とを備えている。 In this example, an example will be described in which an electric valve timing adjustment device that controls the opening and closing timing of an intake valve provided in a vehicle engine is applied as an example of an electronic control device. This electric valve timing adjustment device is installed in the engine compartment of a vehicle. As shown in FIG. 1, the electronic control device 1 includes an electronic control section 2 representing an engine control unit (ECU) and an electric motor 3.
　電子制御部２は、車両に搭載される他の電子制御装置から与えられる制御指令に基づいて、電動モータ３の駆動を制御する。電動モータ３は、バルブタイミング調整装置である電子制御装置１の駆動源として機能する。電動モータ３の出力軸ではるモータシャフトは、不図示の減速機に接続される。これにより、減速機は、電動モータ３の回転方向及び回転速度に従って回転する。減速機は、図示しない吸気バルブ開閉用のカムを有するカムシャフトに接続される。そして、減速機は、電動モータ３の駆動力をカムシャフトに伝達する。 The electronic control unit 2 controls the drive of the electric motor 3 based on control commands given from other electronic control devices mounted on the vehicle. The electric motor 3 functions as a drive source for the electronic control device 1, which is a valve timing adjustment device. A motor shaft, which is an output shaft of the electric motor 3, is connected to a reduction gear (not shown). Thereby, the reduction gear rotates according to the rotational direction and rotational speed of the electric motor 3. The reduction gear is connected to a camshaft having a cam (not shown) for opening and closing an intake valve. The reduction gear transmits the driving force of the electric motor 3 to the camshaft.
　図２及び図３に示すように、電動モータ３は、容器状のモータハウジング３ａを有している。モータハウジング３ａは、略円筒状に形成されており、軸方向の一面が開口し、軸方向の他面が閉じている。このモータハウジング３ａには、ステータコイルを示す複数のコイル線７が収容されている。複数のコイル線７は、モータハウジング３ａの周方向に沿って並べて配置されている。 As shown in FIGS. 2 and 3, the electric motor 3 has a container-shaped motor housing 3a. The motor housing 3a is formed into a substantially cylindrical shape, with one axial surface open and the other axial surface closed. A plurality of coil wires 7 representing stator coils are accommodated in this motor housing 3a. The plurality of coil wires 7 are arranged side by side along the circumferential direction of the motor housing 3a.
　また、モータハウジング３ａには、コイル保持部を示すインシュレータ１０が設けられている。インシュレータ１０には、コイル線７が巻回されている。そして、コイル線７は、インシュレータ１０に保持される。また、コイル線７の接続端部７ａは、モータハウジング３ａの開口部に向けて引き出されている。接続端部７ａは、コイル線７の巻回部から屈曲している。 Further, the motor housing 3a is provided with an insulator 10 indicating a coil holding portion. A coil wire 7 is wound around the insulator 10. The coil wire 7 is then held by the insulator 10. Further, the connecting end 7a of the coil wire 7 is drawn out toward the opening of the motor housing 3a. The connecting end portion 7a is bent from the winding portion of the coil wire 7.
　電動モータ３のモータハウジング３ａの開口を塞ぐようにして、電子制御部２が配置される。電子制御部２は、回路基板４と、略平板状のケース５と、カバー６とを備えている。回路基板４は、ケース５の一面に載置される。また、回路基板４には、接続部１１が設けられている。接続部１１には、後述するケース５に設けた開口孔８を挿通するコイル線７の接続端部７ａが接続される。接続部１１とコイル線７の接続端部７ａは、はんだ付けにより接続される。これにより、コイル線７と回路基板４が電気的に接続される。そして、回路基板４を介してコイル線７に電力が供給される。 The electronic control unit 2 is arranged so as to close the opening of the motor housing 3a of the electric motor 3. The electronic control unit 2 includes a circuit board 4, a substantially flat case 5, and a cover 6. The circuit board 4 is placed on one surface of the case 5. Further, the circuit board 4 is provided with a connecting portion 11 . A connecting end 7a of a coil wire 7 that is inserted through an opening 8 provided in a case 5, which will be described later, is connected to the connecting portion 11. The connecting portion 11 and the connecting end 7a of the coil wire 7 are connected by soldering. Thereby, the coil wire 7 and the circuit board 4 are electrically connected. Power is then supplied to the coil wire 7 via the circuit board 4.
　ケース５は、電動モータ３のモータハウジング３ａの開口を覆うようにして電動モータ３に取り付けられる。このとき、ケース５における回路基板４が載置される一面とは反対側の他面がモータハウジング３ａの開口と対向する。そして、回路基板４及びケース５は、電動モータ３に固定ねじ等を用いて固定される。また、ケース５の一面及び回路基板４は、カバー６により覆われる。 The case 5 is attached to the electric motor 3 so as to cover the opening of the motor housing 3a of the electric motor 3. At this time, the other surface of the case 5 opposite to the one surface on which the circuit board 4 is placed faces the opening of the motor housing 3a. The circuit board 4 and case 5 are then fixed to the electric motor 3 using fixing screws or the like. Further, one surface of the case 5 and the circuit board 4 are covered with a cover 6.
　カバー６は、回路基板４が載置されたケース５の一面を覆う。そして、カバー６は、固定ねじ等を用いてケース５に固定される。ケース５及びカバー６によって、回路基板４を水密な空間に収容する防水ケースを構成する。 The cover 6 covers one side of the case 5 on which the circuit board 4 is placed. Then, the cover 6 is fixed to the case 5 using fixing screws or the like. The case 5 and the cover 6 constitute a waterproof case that accommodates the circuit board 4 in a watertight space.
　図４は、ケース５を示す平面図である。図５は、ケース５を図４とは反対側から見た平面図である。
　図４及び図５に示すように、ケース５には、コイル線７の接続端部７ａが挿通する複数の開口孔８が形成されている。開口孔８は、ケース５の一面から他面にかけて貫通する貫通孔である。図２及び図３に示すように、開口孔８は、ケース５に載置される回路基板４の接続部１１と対向する位置に形成される。この開口孔８には、コイル線７の接続端部７ａが挿通する。 FIG. 4 is a plan view showing the case 5. FIG. 5 is a plan view of the case 5 viewed from the opposite side to that shown in FIG.
As shown in FIGS. 4 and 5, the case 5 is formed with a plurality of opening holes 8 through which the connection ends 7a of the coil wires 7 are inserted. The opening hole 8 is a through hole that penetrates from one side of the case 5 to the other side. As shown in FIGS. 2 and 3, the opening hole 8 is formed at a position facing the connection portion 11 of the circuit board 4 placed on the case 5. The connecting end 7a of the coil wire 7 is inserted into the opening hole 8.
　また、図５に示すように、ケース５の他面には、溝部９が形成されている。溝部９は、ケース５の他面から一面に向けて凹んだ凹部である。溝部９は、開口孔８におけるケース５の他面側の端部に連続して形成されている。そのため、溝部９は、開口孔８の端部に連通している。また、溝部９は、開口孔８の端部からコイル線７の巻線方向に沿って所定の長さで延在している。 Furthermore, as shown in FIG. 5, a groove portion 9 is formed on the other surface of the case 5. The groove portion 9 is a recessed portion recessed from the other surface of the case 5 toward one surface. The groove portion 9 is formed continuously at the end of the opening hole 8 on the other side of the case 5 . Therefore, the groove portion 9 communicates with the end of the opening hole 8 . Furthermore, the groove portion 9 extends a predetermined length from the end of the opening hole 8 along the winding direction of the coil wire 7 .
　溝部９の深さは、コイル線７の直径よりも浅く形成されている。この溝部９には、コイル線７の一部が嵌まり込む。そして、溝部９は、インシュレータ１０とともにコイル線７を挟持する。また、溝部９の幅の長さは、コイル線７の部品公差を考慮して、コイル線７よりも若干大きく形成されている。溝部９における開口孔８の端部と接続する角部１２は、Ｒ形状となっている。また、溝部９の角部１２は、コイル線７における接続端部７ａが屈曲する箇所に当接する。 The depth of the groove portion 9 is formed to be shallower than the diameter of the coil wire 7. A portion of the coil wire 7 fits into this groove 9. The groove portion 9 holds the coil wire 7 together with the insulator 10. Further, the width of the groove portion 9 is formed to be slightly larger than the coil wire 7 in consideration of component tolerances of the coil wire 7. The corner portion 12 in the groove portion 9 that connects with the end portion of the opening hole 8 has an R shape. Furthermore, the corner portion 12 of the groove portion 9 abuts a portion of the coil wire 7 where the connecting end portion 7a is bent.
　上述した構成を有するケース５としては、樹脂製、若しくは絶縁処理された金属材料により構成される。 The case 5 having the above-described configuration is made of resin or an insulated metal material.
２．コイル線の矯正動作
　次に、図６Ａから図６Ｃを参照して上述した構成を有する電子制御装置１におけるコイル線７の矯正動作について説明する。
　図６Ａから図６Ｃは、コイル線７の矯正動作を示す説明図である。 2. Correcting operation of coil wire Next, the correcting operation of the coil wire 7 in the electronic control device 1 having the above-described configuration will be described with reference to FIGS. 6A to 6C.
6A to 6C are explanatory diagrams showing the correcting operation of the coil wire 7. FIG.
　図６Ａに示すように、ケース５で電動モータ３に取り付ける前の状態では、コイル線７の接続端部７ａは、コイル線７自体の応力により、コイル線７の巻回部に対して斜めに屈曲している。そのため、コイル線７における接続端部７ａ側の巻線は、巻回部に対して浮いた状態となっている。 As shown in FIG. 6A, in the state before being attached to the electric motor 3 in the case 5, the connection end 7a of the coil wire 7 is tilted diagonally with respect to the winding portion of the coil wire 7 due to the stress of the coil wire 7 itself. It's bent. Therefore, the winding on the connection end 7a side of the coil wire 7 is in a floating state with respect to the winding portion.
　図６Ｂに示すように、ケース５を電動モータ３におけるモータハウジング３ａの開口を塞ぐと、コイル線７の接続端部７ａは、ケース５の開口孔８を挿通し、回路基板４の接続部１１に達する。また、コイル線７における接続端部７ａ側の一部は、ケース５の溝部９に嵌まり込む。そして、コイル線７における接続端部７ａが屈曲する箇所が溝部９の角部１２に当接する。 As shown in FIG. 6B, when the opening of the motor housing 3a of the electric motor 3 is closed with the case 5, the connection end 7a of the coil wire 7 is inserted through the opening hole 8 of the case 5, and the connection end 11 of the circuit board 4 is inserted. reach. Further, a portion of the coil wire 7 on the connection end 7 a side fits into the groove 9 of the case 5 . Then, the bending portion of the connecting end 7 a of the coil wire 7 contacts the corner 12 of the groove 9 .
　図６Ｃに示すように、ケース５を電動モータ３に取り付けると、コイル線７における接続端部７ａ側の巻線は、溝部９及び角部１２によりインシュレータ１０に向けて押圧される。そのため、コイル線７における屈曲する箇所は、溝部９及び角部１２により、コイル線７の巻回部に対して略９０度に屈曲するように矯正される。 As shown in FIG. 6C, when the case 5 is attached to the electric motor 3, the winding on the connection end 7a side of the coil wire 7 is pressed toward the insulator 10 by the groove 9 and the corner 12. Therefore, the bent portion of the coil wire 7 is corrected by the groove portion 9 and the corner portion 12 so that it is bent at approximately 90 degrees with respect to the winding portion of the coil wire 7.
　これにより、コイル線７における接続端部７ａ側の巻線がコイル線７の巻回部に向けて押し下げられるとともに、接続端部７ａをコイル線７の巻回部に対して略垂直に引き出すことができる。このように、ケース５の溝部９によりコイル線７における巻回部から浮いた状態を矯正することでできる。その結果、ケース５とモータハウジング３ａの間隔を狭めることができ、モータハウジング３ａ及び電子制御装置１全体の小型化を図ることができる。 As a result, the winding on the connection end 7a side of the coil wire 7 is pushed down toward the winding part of the coil wire 7, and the connection end 7a is pulled out approximately perpendicularly to the winding part of the coil wire 7. Can be done. In this way, the groove portion 9 of the case 5 can correct the floating state of the coil wire 7 from the winding portion. As a result, the distance between the case 5 and the motor housing 3a can be narrowed, and the motor housing 3a and the electronic control device 1 can be downsized as a whole.
　上述したように、コイル線７の屈曲する箇所が当接する溝部９の角部１２は、Ｒ形状に形成されている。これにより、コイル線７が屈曲する箇所に荷重が集中することを防止することができ、コイル線７の接続端部７ａがはんだ付けされる回路基板４の接続部１１にかかる応力を低減することができる。 As described above, the corner portion 12 of the groove portion 9, which the bent portion of the coil wire 7 comes into contact with, is formed in an R shape. Thereby, it is possible to prevent the load from concentrating on the part where the coil wire 7 is bent, and to reduce the stress applied to the connection part 11 of the circuit board 4 to which the connection end 7a of the coil wire 7 is soldered. Can be done.
　さらに、コイル線７が嵌まり込む溝部９の深さは、コイル線７の直径よりも浅く形成されている。そのため、コイル線７は、溝部９と、コイル線７を保持するインシュレータ１０により、挟持される。これにより、コイル線７における軸方向及び径方向への動きを抑制することができる。その結果、コイル線７の接続端部７ａと接続する接続部１１にかかる応力を軽減することができる。 Furthermore, the depth of the groove 9 into which the coil wire 7 fits is formed to be shallower than the diameter of the coil wire 7. Therefore, the coil wire 7 is held between the groove portion 9 and the insulator 10 that holds the coil wire 7. Thereby, movement in the axial direction and the radial direction in the coil wire 7 can be suppressed. As a result, the stress applied to the connecting portion 11 that connects to the connecting end 7a of the coil wire 7 can be reduced.
　また、溝部９の幅は、コイル線７よりも若干大きく形成されているため、コイル線７の振動を溝部９で抑制することができる。この溝部９の幅の大きさによっても、コイル線７の接続端部７ａと接続される回路基板４の接続部１１にかかる応力を軽減することができる。 Further, since the width of the groove portion 9 is formed to be slightly larger than the coil wire 7, the vibration of the coil wire 7 can be suppressed by the groove portion 9. The width of the groove 9 can also reduce the stress applied to the connecting portion 11 of the circuit board 4 that is connected to the connecting end 7a of the coil wire 7.
　また、本例の電子制御装置１によれば、コイル線７を溝部９とインシュレータ１０で確実に保持することで、コイル線７の接続端部７ａと回路基板４の接続部１１とのはんだ付けの信頼性を確保することができる。これにより、コイル線７と回路基板４を接続する際にバスバー等の中間部材を用いずに接続することができる。その結果、モータハウジング３ａ内に中間部材を収容する空間が不要となるため、電子制御装置１の小型化を図ることができるとともに、部品点数の削減も図ることができる。 Further, according to the electronic control device 1 of the present example, since the coil wire 7 is securely held by the groove portion 9 and the insulator 10, the connection end portion 7a of the coil wire 7 and the connection portion 11 of the circuit board 4 can be soldered. reliability can be ensured. Thereby, the coil wire 7 and the circuit board 4 can be connected without using an intermediate member such as a bus bar. As a result, a space for accommodating an intermediate member within the motor housing 3a is not required, so that the electronic control device 1 can be made smaller and the number of parts can also be reduced.
　なお、上述しかつ図面に示した実施の形態に限定されるものではなく、請求の範囲に記載した発明の要旨を逸脱しない範囲内で種々の変形実施が可能である。 Note that the present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the gist of the invention as set forth in the claims.
　上述した実施の形態例では、電子制御装置の一例として、バルブタイミング調整装置を適用した例を説明したが、これに限定されるものではない。電子制御装置としては、ブラシレスモータを使った車載モータ、例えば、電動ブレーキ、電動ウォータポンプ、電動オイルポンプ、電動パワーステアリング、電動スロットルブルブなどその他各種の電子制御装置を適用されるものである。また、電子制御装置としては、振動条件下で用いられる電子制御装置に有効である。 In the embodiment described above, an example in which a valve timing adjustment device is applied as an example of an electronic control device has been described, but the present invention is not limited to this. As the electronic control device, various other electronic control devices such as an in-vehicle motor using a brushless motor, an electric brake, an electric water pump, an electric oil pump, an electric power steering, an electric throttle valve, etc. are applied. Furthermore, the present invention is effective as an electronic control device used under vibration conditions.
　なお、本明細書において、「平行」及び「直交」等の単語を使用したが、これらは厳密な「平行」及び「直交」のみを意味するものではなく、「平行」及び「直交」を含み、さらにその機能を発揮し得る範囲にある、「略平行」や「略直交」の状態であってもよい。 In addition, although words such as "parallel" and "orthogonal" are used in this specification, these do not mean strictly "parallel" and "orthogonal", but include "parallel" and "orthogonal". , and may also be in a "substantially parallel" or "substantially perpendicular" state within the range where the function can be achieved.
　　１…電子制御装置、　２…電子制御部、　３…電動モータ、　３ａ…モータハウジング、　４…回路基板、　５…ケース、　６…カバー、　７…コイル線、　７ａ…接続端部、　８…開口孔、　９…溝部、　１０…インシュレータ（コイル保持部）、　１１…接続部、　１２…角部 1... Electronic control device, 2... Electronic control unit, 3... Electric motor, 3a... Motor housing, 4... Circuit board, 5... Case, 6... Cover, 7... Coil wire, 7a... Connection end, 8... Opening hole , 9...Groove section, 10...Insulator (coil holding section), 11...Connection section, 12...Corner section

Claims (6)

  1. 　モータハウジングを有する電動モータと、
    　前記モータハウジングに収容されるコイル線と、
    　前記コイル線の接続端部が接続される回路基板と、
    　前記回路基板が一面に載置されるとともに、前記モータハウジングの開口を覆うケースと、を備え、
    　前記接続端部は、前記コイル線の巻回部に対して屈曲し、前記モータハウジングの開口に向けて引き出されており、
    　前記ケースには、前記接続端部が挿通する開口孔が形成されており、
    　前記ケースにおける前記回路基板が載置される一面とは反対側の他面には、前記開口孔に連通し、前記コイル線における前記接続端部側の巻線が嵌まり込む溝部が形成されている
    　電子制御装置。     an electric motor having a motor housing;
    a coil wire housed in the motor housing;
    a circuit board to which the connecting end of the coil wire is connected;
    a case on which the circuit board is placed and which covers an opening of the motor housing;
    The connection end portion is bent with respect to the winding portion of the coil wire and pulled out toward the opening of the motor housing,
    The case has an opening hole through which the connection end is inserted,
    A groove portion is formed on the other surface of the case opposite to the surface on which the circuit board is placed, which communicates with the opening hole and into which the winding on the connection end side of the coil wire is fitted. There is an electronic control unit.
  2. 　前記溝部の深さは、前記コイル線の直径よりも浅く形成されている
    　請求項１に記載の電子制御装置。     The electronic control device according to claim 1, wherein the depth of the groove is shallower than the diameter of the coil wire.
  3. 　前記溝部は、前記開口孔における前記ケースの他面側の端部から前記コイル線の巻線方向に沿って所定の長さで延在している
    　請求項１に記載の電子制御装置。     The electronic control device according to claim 1, wherein the groove portion extends a predetermined length from the end of the opening on the other side of the case along the winding direction of the coil wire.
  4. 　前記溝部における前記開口孔の端部と接続する角部は、前記コイル線における屈曲する箇所に当接する
    　請求項１に記載の電子制御装置。     The electronic control device according to claim 1, wherein a corner portion of the groove portion that connects to an end portion of the opening hole abuts a bent portion of the coil wire.
  5. 　前記溝部の前記角部は、Ｒ形状に形成されている
    　請求項４に記載の電子制御装置。     The electronic control device according to claim 4, wherein the corner portion of the groove portion is formed in an R shape.
  6. 　前記モータハウジングには、前記コイル線が巻回され、前記コイル線を保持するコイル保持部が設けられ、
    　前記コイル線における前記接続端部側の巻線は、前記溝部と前記コイル保持部により挟持される
    　請求項１に記載の電子制御装置。
          The motor housing is provided with a coil holding portion around which the coil wire is wound and holding the coil wire,
    The electronic control device according to claim 1, wherein the winding on the connection end side of the coil wire is held between the groove and the coil holding portion.
PCT/JP2022/017465 2022-04-11 2022-04-11 Electronic control device WO2023199370A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0182649U (en) * 1987-10-26 1989-06-01
JP2007124801A (en) * 2005-10-28 2007-05-17 Nippon Densan Corp Fan motor
JP2014154745A (en) * 2013-02-12 2014-08-25 Denso Corp Electronic control unit
JP2019022311A (en) * 2017-07-14 2019-02-07 日本電産株式会社 Motor manufacturing method and motor
JP2021168531A (en) * 2020-04-09 2021-10-21 三菱電機株式会社 Iron core and coil assembly and manufacturing method thereof, rotary electric machine using iron core and coil assembly and manufacturing method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0182649U (en) * 1987-10-26 1989-06-01
JP2007124801A (en) * 2005-10-28 2007-05-17 Nippon Densan Corp Fan motor
JP2014154745A (en) * 2013-02-12 2014-08-25 Denso Corp Electronic control unit
JP2019022311A (en) * 2017-07-14 2019-02-07 日本電産株式会社 Motor manufacturing method and motor
JP2021168531A (en) * 2020-04-09 2021-10-21 三菱電機株式会社 Iron core and coil assembly and manufacturing method thereof, rotary electric machine using iron core and coil assembly and manufacturing method thereof

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