ELECTRIC DRIVING DEVICE AND ELECTRIC POWER STEERING DEVICE

Japanese Patent JP2017159771

A

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 electronic control means 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: A heat radiation base body 23 extending in a rotary shaft direction is provided near a rotary shaft 50 of an electric motor, adjacent to an electric motor part EM. One substrate 24 (electronic control means) with a redundant system is fixed to the heat radiation base body 23 in a heat conductive manner in a direction in which the heat radiation base body 23 extends, and the other substrate 26 (electronic control means) is fixed to the heat radiation base body 23 in a heat conductive manner so as to face the one substrate 24 (electronic control means). Heat from each of the substrates (electronic control means) 24 and 26 is radiated to a motor housing 20 through the heat radiation base body 23. In addition, a rotational position detection circuit board 22 to which each of neutral terminals 31 of each phase of the electric motor is connected is provided between the heat radiation base body and the motor housing.SELECTED DRAWING: Figure 3

FUJIMOTO MASAO
HAMADA KEIJI
SAKASHITA TOMIO

JP2016045430A

September 14, 2017

March 09, 2016

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HITACHI AUTOMOTIVE SYSTEMS LTD

B62D5/04; H05K7/20

JP2011228379A	2011-11-10
JP2012120248A	2012-06-21
JP2012143037A	2012-07-26
JP2011250490A	2011-12-08
JP2011176999A	2011-09-08
JP2009176935A	2009-08-06
JP2009113526A	2009-05-28

Polaire Patent Business Corporation

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