Resin gear
AssigneeShowa Denko Materials Co., Ltd.
InventorsYoichi MORIO, Tatsuya AOYAGI
Life of this patent
Estimating the term…
Abstract
A space and an elastic member have a first part where a distance between an outer peripheral surface of a metal bush and an inner peripheral surface of a resin member is a first distance, a second part where the distance between the outer peripheral surface and the inner peripheral surface is a second distance different from the first distance, and a third part where the distance between the outer peripheral surface and the inner peripheral surface is a third distance different from the first distance in a cross section along a radial direction of a resin gear. The first part is provided between the second part and the third part in an axial direction of the resin gear.
Claims13
A resin gear comprising:
- an annular metal bush;
- and
- an annular resin member which is provided around the metal bush and comprises a tooth profile formed in an outer peripheral portion,
- wherein the metal bush and the resin member are disposed so as to be relatively rotatable in a direction of rotation of the resin gear,
- wherein a plurality of spaces entering an outer peripheral surface of the metal bush and an inner peripheral surface of the resin member are formed, so as to be aligned along the direction of rotation, between the metal bush and the resin member,
- wherein an elastic member is disposed in each space of the plurality of spaces,
- wherein the space and the elastic member comprises, in a cross section along a radial direction of the resin gear:
- a first part where a distance between the outer peripheral surface and the inner peripheral surface is a first distance;
- a second part where a distance between the outer peripheral surface and the inner peripheral surface is a second distance different from the first distance;
- and
- a third part where a distance between the outer peripheral surface and the inner peripheral surface is a third distance different from the first distance, and
- wherein the first part is provided between the second part and the third part in an axial direction of the resin gear.
Dependencies are inferred from the claim text.