Patent ID: 11878614
Assignee: TOKAI CHEMICAL INDUSTRIES, LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  A | IPC B

Claim 10:
11. A vehicle seat, comprising:
a frame;
a case, attached to the frame; and
a dynamic damper, accommodated in the case and comprising a mass and an elastic body,
wherein:
the elastic body at least comprises an annular elastic body as a member having a through hole,
the mass is fitted to the through hole of the annular elastic body, and an outer peripheral surface of the annular elastic body is arranged to contact an inner wall surface of the case,
wherein the mass is formed in a cylindrical columnar shape or an elliptical cylindrical columnar shape,
the annular elastic body is formed in a cylindrical shape or an elliptical cylindrical, and
an inner peripheral surface of the annular elastic body in a tubular shape is in contact with an outer peripheral surface of the mass in a columnar shape,
wherein the elastic body further comprises:
a first elastic body sheet, fitted to the through hole of the annular elastic body on a side of a first opening and contacting a surface of the mass on the side of the first opening; and
a second elastic body sheet, fitted to the through hole of the annular elastic body on a side of a second opening, which is opposite to the first opening, and contacting a surface of the mass on the side of the second opening.,
wherein the elastic body covers an entire surface of the mass such that no surface of the mass is exposed.