To provide a further effective method for preventing expansion of a gap by utilizing three-dimensional dimension increases in a bearing part structure of an aluminum crank case (1) for supporting a rotary member through a bearing (9) composed of a steel member.
In the bearing part structure of the crank case (1), a plurality of piece members (12) each having an approximately trapezoidal shape are arranged between the crank case (1) and a bearing outer ring (9A) concentrically to the bearing, an outer peripheral surface (12a), end faces (12b) and side faces (12c) of each piece member are embedded in a bearing part (10) of the crank case, an inner peripheral surface (12d) of the piece member is opposed to an outer peripheral surface of the bearing outer ring (9A), an interval between the end faces (12b) of the piece member and an interval between the side faces (12c) are gradually opened to the outer peripheral surface of the bearing outer ring (9A), and a linear expansion coefficient of the piece member (12) is larger than a linear expansion coefficient of the crank case (1).
KURIHARA HIROSHI
HARADA NORITAKA
| JPH06307440A | 1994-11-01 | |||
| JPH09242745A | 1997-09-16 | |||
| JP2003184648A | 2003-07-03 | |||
| JP2008180237A | 2008-08-07 | |||
| JPS63100293A | 1988-05-02 | |||
| JP2002349342A | 2002-12-04 | |||
| JPH06307440A | 1994-11-01 | |||
| JPH09242745A | 1997-09-16 | |||
| JP2003184648A | 2003-07-03 | |||
| JP2008180237A | 2008-08-07 |
Nakamura Kun
Junko Kanzawa