Title:
ELECTRONIC THROTTLE DEVICE AND ANODIZING TREATMENT METHOD
Document Type and Number:
Japanese Patent JP2023180518
Kind Code:
A
Abstract:
To secure reliability of an electronic throttle device by achieving both corrosion suppression of a bore inner wall of a housing and sufficient heat radiation performance of heat generation of a motor.SOLUTION: An electronic throttle device 1 comprises: a throttle body 11 including a bore 11a; a valve shaft 3 that is rotatably supported by the throttle body 11 and partially disposed in the bore 11a; a throttle valve 4 that is disposed in the bore 11a and fixed to the valve shaft 3; a DC-motor 5 that is provided in the throttle body 11 and rotationally drives the valve shaft 3; and a motor housing part 11c that is provided integrally with the throttle body 11 for housing the DC-motor 5. In the throttle body 11, only at least a part of an inner wall of the bore 11a is covered with an anodic oxide film 20, and a raw material is exposed in the other part.SELECTED DRAWING: Figure 3
Inventors:
YOSHIOKA MAMORU
KAWAI SHINJI
YAMAUCHI KEISUKE
KAWAI SHINJI
YAMAUCHI KEISUKE
Application Number:
JP2022093890A
Publication Date:
December 21, 2023
Filing Date:
June 09, 2022
Export Citation:
Assignee:
AISAN IND
International Classes:
F16K1/22; F01L7/06; F01L33/02; F02D9/10; F16K27/02; H02K7/116
Attorney, Agent or Firm:
Patent Attorney Corporation Cosmos International Patent and Trademark Office