Patent ID: 7325643
Filing Date: 2008-02-05
Classification: B60K,B60T

Abstract:
1. A reduction gear structure applied to a vehicle having a motor unit with a motor shaft for outputting a driving force for driving a driving wheel and a reduction gear device, wherein said reduction gear device includes: an input shaft operatively connected to said motor shaft; a reduction gear unit operatively connected to said input shaft; a brake disk supported by said input shaft in a relatively non-rotatable and axially movable manner; an operating member for pushing and moving said brake disk toward a braking surface; a housing for accommodating said reduction gear unit, said brake disk and said operating member; and a brake operating shaft which is supported rotatably about an axis by said housing along a radial direction of said brake disk and has an engagement part engaging with said operating member, wherein the engagement part of said brake operating shaft is formed into a non-circular shape in a cross-sectional view, in order that said operating member pushes and moves said brake disk according to the rotation of said brake operating shaft in any one of both directions about the axis.