Front fork
AssigneeHitachi Astemo, Ltd.
InventorYasuhiro Aoki
Life of this patent
Estimating the term…
Abstract
A front fork includes a spring that is provided between a first cylindrical body and a second cylindrical body and applies a force in a direction to separate the first cylindrical body and the second cylindrical body, and a spring seat portion that is provided on an outer peripheral surface of the first cylindrical body and receives a first end of the spring. The spring seat portion includes a fixing portion that is fixed to the first cylindrical body, a spring seat body that is made of metal and receives the spring, and a third cylindrical body that is disposed between an inner peripheral surface of the spring seat body and the outer peripheral surface of the first cylindrical body and reduces a frictional force when the spring seat body rotates.
Claims2
A front fork, comprising:
- a first cylindrical body that is formed in a cylindrical shape;
- a second cylindrical body that surrounds an outer peripheral surface of the first cylindrical body and is provided so as to be movable in a direction of an axis with respect to the first cylindrical body;
- a spring that is provided between the outer peripheral surface of the first cylindrical body and an inner peripheral surface of the second cylindrical body and applies a force in a direction to separate the first cylindrical body and the second cylindrical body;
- and
- a spring seat portion that is provided on the outer peripheral surface of the first cylindrical body and receives a first end of the spring, wherein
- the spring seat portion includes;
- a fixing portion that is fixed to the first cylindrical body;
- a receiving member whose upper end surface abuts the fixing portion;
- and
- a spring seat body that is made of metal, receives the spring and is rotatably supported around the axis by the receiving member,
- the receiving member includes:
- a third cylindrical body that is disposed between an inner peripheral surface of the spring seat body and the outer peripheral surface of the first cylindrical body and reduces a frictional force when the spring seat body rotates about the axis;
- and
- a support portion that is provided between the fixing portion and the third cylindrical body and supports the spring seat body,
- the third cylindrical body and the support portion are integrally configured as one member, and
- the third cylindrical body and the support portion are formed of a material having a friction coefficient smaller than that of the spring seat body.
Dependencies are inferred from the claim text.