Claims
- 1. In an air control device including a body, an air passage formed in said body, a throttle valve disposed in said air passage for controlling an air quantity flowing in said air passage, a throttle shaft for mounting said throttle valve and extending across said air passage, and a pair of first and second ball bearings mounted in said body for rotatably supporting said throttle shaft; a supporting structure of said throttle valve comprising:
- an inner ring of said first ball bearing engaged by interference fit with said throttle shaft;
- an outer ring of said first ball bearing engaged by clearance fit with said body;
- an annular groove formed on an outer circumference of said outer ring of said first ball bearing;
- a ring member fitted in said annular groove of said outer ring and engaged by interference fit with said body, said ring member being formed of a material having a thermal expansion rate equal to or near that of said body;
- a shoulder formed in said body;
- a stopper engaged by interference fit with said body;
- an inner ring of said second ball bearing engaged by clearance fit with said throttle, shaft; and
- an outer ring of said second ball bearing engaged by clearance fit with said body, said outer ring being fixedly sandwiched between said shoulder and said stopper.
Priority Claims (2)
Number |
Date |
Country |
Kind |
1-160487[U] |
Dec 1988 |
JPX |
|
64-97580[U] |
Aug 1989 |
JPX |
|
Parent Case Info
This is a divisional of co-pending application Ser. No. 432,913 filed on Nov. 7, 1989.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4549823 |
Nichting |
Oct 1985 |
|
4880207 |
Matsumoto et al. |
Nov 1989 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
60-26201 |
Aug 1985 |
JPX |
60129538 |
Jun 1987 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
432913 |
Nov 1989 |
|