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Motor for electric power steering device with integrated controller and electric power steering device

A technology of electric power steering and control device, applied in power steering mechanism, electric steering mechanism, steering mechanism, etc., can solve the problems of component characteristic deterioration, shortened life, poor heat transfer, etc., and achieves suppression of characteristic deterioration and high performance Cost, low cost effect

Active Publication Date: 2011-02-23
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the conventional control-device-integrated electric power steering motor shown in Patent Document 1, since the drive board (drive circuit) of the control device is mounted on the motor side in the housing of the control device, there is a problem that the drive board (drive circuit) The heat transfer between the reduction mechanism (gear box) is poor, and the heat generated by the drive board cannot be efficiently dissipated to the reduction mechanism. Therefore, the characteristics of the components will be deteriorated due to heat generation, and the life will be shortened.
[0007] In addition, there is also the following problem: it is necessary to increase the heat capacity of the casing of the control device to reduce the influence of heat generation, so that the overall size, weight, and cost of the device increase.
[0008] In addition, in the conventional electric power steering motor with integrated control device disclosed in Patent Document 2, since the circuit case of the control device is made of resin, there is a problem that the heat transfer between the motor, the control device, and the speed reduction mechanism is relatively low. Poor, the heat of the motor cannot be efficiently dissipated to the reduction mechanism

Method used

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  • Motor for electric power steering device with integrated controller and electric power steering device
  • Motor for electric power steering device with integrated controller and electric power steering device
  • Motor for electric power steering device with integrated controller and electric power steering device

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Embodiment approach 1

[0026] based on Figure 1 to Figure 5 Embodiment 1 will be described. In addition, in each of the following drawings, the same or corresponding parts are described with the same reference numerals.

[0027] figure 1 It is a cross-sectional view showing the motor for the control-device-integrated electric power steering device and the electric power steering device in Embodiment 1 of the present invention.

[0028] figure 2 yes means figure 1 Cross-sectional view of the motor for the control unit-integrated electric power steering system.

[0029] image 3 yes means figure 2 An explanatory diagram of the assembly sequence of the control device.

[0030] Figure 4 is expressed in figure 2 A plan view of the inside of the case viewed from the motor side with the drive board attached to the reduction mechanism side case.

[0031] Figure 5 yes figure 2 circuit block diagram.

[0032] Figure 1 to Figure 5 Here, the motor 2 is a permanent magnet synchronous motor...

Embodiment approach 2

[0063] Image 6 It is a cross-sectional view showing the electric motor for the control-device-integrated electric power steering device and the electric power steering device in Embodiment 2 of the present invention.

[0064] Figure 7 yes means Image 6 Cross-sectional view of the motor for the control unit-integrated electric power steering system.

[0065] Figure 8 yes means Image 6 An explanatory diagram of the assembly sequence of the control device.

[0066] Figure 9 yes Image 6 circuit block diagram.

[0067] The motor 1 for an electric power steering apparatus with integrated control device and the electric power steering apparatus 41 according to Embodiment 2 are different from those in Embodiment 1 in the configurations of parts described below.

[0068] In Embodiment 1, the resolver as the rotation sensor 35 is attached to the center portion of the reduction mechanism side housing 17 on the motor 2 side, but in Embodiment 2, the resolver as the rotation...

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PUM

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Abstract

A motor (1) for an electric power steering device with an integrated controller comprises a motor (2) and a controller (15) for controlling driving of the motor (2) and having a metal case, which are formed integrally with each other. The motor (1) is mounted on a speed reduction mechanism (23). The motor (2), the controller (15) and the speed reduction mechanism (23) are arranged in this order in the axial direction and in substantially coaxial with each other. The heat emitted from a drive base plate and the motor can be efficiently transmitted to the speed reduction mechanism.

Description

technical field [0001] The present invention relates to a motor for an electric power steering device that is mounted on a vehicle and assists a driver's steering force, and an electric power steering device, and more particularly relates to a technology integrated with a control device. Background technique [0002] In a conventional electric power steering motor with integrated control device, a metal substrate on which a drive circuit is provided is mounted on the motor side in a casing of the control device. [0003] In addition, in the conventional motor for an electric power steering device with integrated control device, the casing of the control device is made of resin. (For example, refer to Patent Documents 1 and 2) [0004] Patent Document 1: Japanese Patent No. 3560701 (pp. 3-5, image 3 ) [0005] Patent Document 2: Japanese Patent No. 3774624 (pp. 5-10, Figure 7 ) [0006] In the conventional control-device-integrated electric power steering motor shown in...

Claims

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Application Information

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IPC IPC(8): H02K9/02H02K7/116H02K11/00B62D5/04
CPCH02K11/0031H02K11/0073B62D5/0406H02K7/1166H02K11/225H02K11/33
Inventor 园田功浅尾淑人阿久津悟
Owner MITSUBISHI ELECTRIC CORP