To prevent abnormal abrasion in wall faces of a pair of gears 52 and a gear chamber, in a driving part of the pair of gears of a crankshaft or in gear curve parts of the pair of gears caused by twisting and rotary motion of the pair of gears, and to prevent abnormal noise from generating during operation of an electric compressor to prevent degradation in performance and reliability of the electric compressor.
Only the pair of gears 52 are housed in the pump case 51, and other parts are disposed on a side opposite to an auxiliary bearing of the pair of gears 52 to reduce the thickness in an axial direction of the pump case 51. At least a part of the pump case is housed in an auxiliary bearing housing space to hold its outer periphery by a cylindrical face shared with an auxiliary bearing, and the pump case and the auxiliary bearing are closely arranged. Since high positioning accuracy of the pair of gears 52 and the pump case 51 is kept, and distance between the pair of gears 52 and the auxiliary bearing 4a, run-out of a tip part of the crankshaft is suppressed to suppress a twisting motion of the pair of gears.
ABURAYA SEIJI
NOZU TOSHIHARU
TSUBOKAWA MASAHIRO
SAKAI MANABU
AOSHIKA MASAHARU
NARITA TSUTAYOSHI
JPH05164080A | 1993-06-29 | |||
JPH05231357A | 1993-09-07 | |||
JPH01149588U | 1989-10-17 | |||
JPH07189960A | 1995-07-28 |
Hiroki Naito
Daisuke Nagano