초록 ▼

An electric engine starter that has a motor frame and a planetary gear mechanism is provided with an internal shield that is operative to prevent brush dust from entering the planetary gear mechanism. The shield is formed of steel and has an outer annular flange that, prior to assembly to the starte

An electric engine starter that has a motor frame and a planetary gear mechanism is provided with an internal shield that is operative to prevent brush dust from entering the planetary gear mechanism. The shield is formed of steel and has an outer annular flange that, prior to assembly to the starter, is located at an angle to a plane that is normal to the longitudinal axis of the shield. When the shield is assembled to the starter, it is compressed between the motor frame and a support for the ring gear of the planetary gear mechanism. During this compression, the flange is deflected to develop a spring force. This spring force causes a gasket interposed between the flange and the motor frame to tightly seal against the motor frame. This spring force further causes the shield to tightly engage the ring gear support.

대표청구항 ▼

An electric engine starter comprising, an electric cranking motor having a frame, said cranking motor having an armature and an armature shaft connected to said armature, a drive housing secured to said frame, a pinion drive shaft disposed within said drive housing, a planetary gear mechanism connec

An electric engine starter comprising, an electric cranking motor having a frame, said cranking motor having an armature and an armature shaft connected to said armature, a drive housing secured to said frame, a pinion drive shaft disposed within said drive housing, a planetary gear mechanism connected between said armature shaft and said pinion drive shaft, said planetary gear mechanism having a ring gear that is supported by a ring gear support, said ring gear support carried by said drive housing, a shield disposed between said frame and said planetary gear mechanism, said shield having a radially and circumferentially extending wall portion which engages said ring gear support and having an outer imperforate annular flange that faces a surface of said frame, and a gasket disposed between and engaging said surface, and said annular flange, said annular flange being deflected to a position where it develops a spring force when said frame is secured to said drive housing, said spring force operative to force said gasket tightly against said frame and operative to maintain said shield tightly engaged with said ring gear support.