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Title:
DAMPER ATTENUATION FORCE VARIABLE DEVICE, DAMPER SYSTEM EQUIPPED WITH SAID DEVICE, AND VEHICLE EQUIPPED WITH SAID DAMPER SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/087665
Kind Code:
A1
Abstract:
In order to address an overheating problem in an onboard ECU including a boosting control circuit, the purpose of the present invention is to provide a damper attenuation force variable device which includes a mechanism with which, even in a state in which a boosting transformer is covered with an electromagnetic shield, heat from the boosting transformer can be efficiently discharged, a damper system equipped with the device, and a vehicle equipped with the damper system. The damper attenuation force variable device according to the present invention is a device for controlling the attenuation force of a damper in which an electric viscous fluid is used, and is provided with: a boosting control circuit substrate on which a boosting transformer and a microprocessor for controlling the boosting transformer are mounted; and an airtight case in which the boosting control circuit substrate is housed. The damper attenuation force variable device is characterized in that: the boosting transformer is covered with a box-shaped electromagnetic shield with a filler therebetween; one surface of the box shape of the electromagnetic shield is abutted onto an inner surface of the airtight case opposing the airtight case; and the one surface opposing the airtight case includes a structure having ridges and recesses.

Inventors:
KONDOU Yoshihiro (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
ASANUMA Michihiro (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2018/037082
Publication Date:
May 09, 2019
Filing Date:
October 03, 2018
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
H01F27/02; B60G13/12; B60G17/015; B60R16/02; H01F30/10; F16F9/53
Domestic Patent References:
WO2014033852A12014-03-06
Foreign References:
JPH08113021A1996-05-07
JP2013182911A2013-09-12
JPS5425000Y21979-08-22
JPS61195025U1986-12-04
JPS61231709A1986-10-16
Attorney, Agent or Firm:
POLAIRE I.P.C. (13-11, Nihonbashikayabacho 2-chome Chuo-k, Tokyo 25, 〒1030025, JP)
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