VEHICLE STARTER AND OVERLOAD-PROTECTION AND DAMPER DEVICE

摘要

An overload-protection and damper device for a vehicle starter is disclosed, the starter comprising an electric motor and a planetary-gear type speed reducing mechanism coupled with an output shaft of the electric motor. The overload-protection and damper device comprises a ring gear of the speed reducing mechanism, the ring gear having an outer circumference of a frusto-conical shape and defining an axial direction, a holder ring for receiving the ring gear therein, the holder ring having an inner circumference of a frusta-conical shape, with the outer circumference having a cone angle which is substantially equal to that of the inner circumference, and an elastic element applying an axial pushing force to the ring gear towards the holder ring so that the outer circumference biases against the inner circumference, forming a frictional fit therebetween. An increased maximum output torque can be provided by a simple structure.

主权项

1. An overload-protection and damper device for a vehicle starter, the starter comprising an electric motor and a planetary-gear type speed reducing mechanism coupled with an output shaft of the electric motor, the overload-protection and damper device comprising:
a ring gear of the planetary-gear type speed reducing mechanism, the ring gear having an outer circumference of a frusto-conical shape and defining an axial direction; a holder ring configured to receive the ring gear therein, the holder ring having an inner circumference of a frusto-conical shape, with the outer circumference having a cone angle which is substantially equal to that of the inner circumference; and an elastic element configured to apply an axial pushing force to the ring gear towards the holder ring so that the outer circumference biases against the inner circumference, forming a frictional fit therebetween.