Shock absorber
AssigneeHitachi Astemo, Ltd.
InventorsKoichi YAMAKA, Riichi NAGAO
Life of this patent
Estimating the term…
Abstract
A protruding portion includes a fitting portion to which an outer periphery of a cylinder is fitted. When the cylinder and a closing member are assembled into an outer cylinder, a length from a contact portion to one end side end portion of the outer cylinder is longer than a length from the other end side end portion of the cylinder to one end side end portion on an outer peripheral side of the closing member. A length from one end side end surface of the protruding portion to the contact portion is longer than a difference between the length from the contact portion of a bottom portion to one end side end portion of the outer cylinder and the length from the other end side end portion of the cylinder to one end side end portion on the outer peripheral side of the closing member.
Claims7
A shock absorber comprising:
- a rod having one end side protruding outward;
- a cylinder having a cylindrical shape;
- an outer cylinder having a bottom portion provided on the other end side, disposed on an outer peripheral side of the cylinder to form a reservoir chamber between the cylinder and the outer cylinder;
- a closing member that closes an opening of the cylinder on one end side and an opening of the outer cylinder on one end side;
- a plurality of protruding portions extending in an axial direction of the cylinder from the bottom portion, protruding inward in a radial direction of the cylinder from an inner peripheral surface of the outer cylinder, and provided apart from each other in a circumferential direction of the cylinder;
- and
- a contact portion provided in the bottom portion, and with which the other end side end portion of the cylinder comes into contact,
- wherein the protruding portion includes a fitting portion to which an outer periphery of the cylinder is fitted,
- when the cylinder and the closing member are assembled into the outer cylinder, a length from the contact portion to one end side end portion of the outer cylinder is longer than a length from the other end side end portion of the cylinder to one end side end portion on an outer peripheral side of the closing member, and
- a length from one end side end surface of the protruding portion to the contact portion is longer than a difference between the length from the contact portion of the bottom portion to one end side end portion of the outer cylinder and the length from the other end side end portion of the cylinder to one end side end portion on the outer peripheral side of the closing member, and is smaller than a length from one end side end portion of the protruding portion to the other end side end portion of the contact portion.
Dependencies are inferred from the claim text.