Title:
ELECTRIC DRIVING DEVICE AND ELECTRIC POWER STEERING DEVICE
Document Type and Number:
Japanese Patent JP2017159770
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a novel electric driving device which prevents enlargement of the size in a radial direction since an electric motor part is integrated with an electronic control part with a redundant system in the electric driving device, and has a simple heat radiation structure by reducing the number of components as much as possible; and to provide an electric power steering device.SOLUTION: An electric driving device comprises: a motor housing 20 in which an electric motor is housed; a heat radiation base body 23 fixed to an end surface of the motor housing on a side opposite to an output part of a rotary shaft of the electric motor, and extending in a rotary shaft direction on a side opposite to the output part; one electronic control means with a redundant system having substrates 24 and 25 arranged in a direction in which the heat radiation base body 23 extends, and fixed to the heat radiation base body in a heat conductive manner; and the other electronic control means with a redundant system having substrates 26 and 27 arranged in a direction in which the heat radiation base body extends, and fixed to the heat radiation base body in a heat conductive manner. The substrates of the one electronic control means and the substrates of the other electronic control means are inclined relative to the direction in which the heat radiation base body extends, and mounted on the heat radiation base body, and heat is radiated from the motor housing through the heat radiation base body.SELECTED DRAWING: Figure 3
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Inventors:
FUJIMOTO MASAO
HAMADA KEIJI
HAMADA KEIJI
Application Number:
JP2016045429A
Publication Date:
September 14, 2017
Filing Date:
March 09, 2016
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
B62D5/04; H05K7/20
Domestic Patent References:
| JP2011250490A | 2011-12-08 | |||
| JP2012143037A | 2012-07-26 | |||
| JP2009176935A | 2009-08-06 | |||
| JP2009113526A | 2009-05-28 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation
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