Patent ID: 7194925
Filing Date: 2007-03-27
Classification: F02N,Y10T

Abstract:
1. A starter comprising: a starter motor driven in response to supply of electric power for generating a rotational force transmitted to an armature; a planetary reduction gear device for reducing a rotational speed of said armature, said planetary reduction gear device comprising a sun gear provided on a rotary shaft of said armature, planetary gears meshing with said sun gear, and an internal gear meshing with said planetary gears; an output shaft, supported by a housing, said output shaft is connected to said armature via said planetary reduction gear device for outputting a reduced rotation of said armature; a pinion gear provided on said output shaft for selectively meshing with a ring gear of an engine; and a shock absorbing device comprising a plurality of first friction plates all of which are provided stationarily relative to each other and to said housing and a plurality of second friction plates, all of which are provided stationarily relative to each other and to said internal gear, and receiving a torque transmitted from said internal gear, said shock absorbing device further comprising a transmitting section interposed between said second friction plates and said internal gear, said shock absorbing device is positioned next to said internal gear, wherein said plurality of first and second friction plates are laminated with each other so as to be brought into frictional engagement when said first friction plates and said second friction plates are pressed by pressing means, thereby obtaining a predetermined frictional torque, and wherein said first friction plates are engaged with an engaging portion of said housing, and said engaging portion of said housing extends in a direction along which said first and second friction plates are laminated to each other.