Patent ID: 9676307
Date: 2017-06-13
CPC Classifications: B60N

Claim:
1. An armrest that is used while being fixed on a seat frame through a fastening bolt, the armrest comprising: an arm body comprising a front portion and a rear portion and having a first through hole formed in the rear portion; an arm comprising a base and an arm portion, the arm having a recess in which the arm body is located, the arm portion extending in a forward direction from the base; a drum that includes a cylinder inserted in the first through hole, a bottom, and circular arc planar walls extending radially outward from an external circumferential surface of the cylinder, is arranged at the rear portion of the arm body, and pivots the arm body about the cylinder; and mounting metal fittings that are integrally connected to the bottom of the drum and can be mounted on the seat frame; wherein the armrest comprises an adjustment mechanism for adjusting a position of the arm between a storage state in which the arm portion of the arm is pivoted upward and a use state in which the arm portion of the arm is pivoted downward, wherein the circular arc planar walls each have a radial direction length of 10% or more of a length of the arm and a width in a circumferential direction of three times or more as large as a thickness of the cylinder, the circular arc planar walls being arranged in a front-and-rear direction of the arm body in the use state, and the arm body is sandwiched between the circular arc planar walls and the mounting metal fittings in an axial direction of the cylinder.