Abstract: A operation knob device (10) for an armrest, that is configured to unlock the armrest and moves the armrest to a useable state, includes: a knob min body (30) having an operation knob (32); and an inner case (50) disposed around the knob main body (30) and configured to expose the operation knob (32) from a first opening (55). The inner case (50) includes a plurality of case protrusions (60) that protrude from a lower region (54a) of a lower edge of the first opening (55) toward the knob main body (30). The knob main body (30) includes a plurality of main body protrusions (40) that protrude toward the lower region (54a) of the inner case (50). The plurality of case protrusions (60) and the plurality of main body protrusions (40) are alternately disposed when viewed in a +Z direction.

Abstract: A operation knob device (10) for an armrest, that is configured to unlock the armrest and moves the armrest to a useable state, includes: a knob min body (30) having an operation knob (32); and an inner case (50) disposed around the knob main body (30) and configured to expose the operation knob (32) from a first opening (55). The inner case (50) includes a plurality of case protrusions (60) that protrude from a lower region (54a) of a lower edge of the first opening (55) toward the knob main body (30). The knob main body (30) includes a plurality of main body protrusions (40) that protrude toward the lower region (54a) of the inner case (50). The plurality of case protrusions (60) and the plurality of main body protrusions (40) are alternately disposed when viewed in a +Z direction.

Abstract: A seat slide device comprises a rail unit consisting of upper and lower guide rails and rollers disposed between the upper and lower guide rails. The upper guide rail includes a substantially channeled member consisting of a downwardly-opening, channeled portion, a vertical portion extending vertically and longitudinally from an upper wall of the downwardly-opening, channeled portion, and flanged portions formed at lower ends of both side walls of the downwardly-opening, channeled portion. The flanged portions of the upper guide rail are slidably engaged with the respective flanged portions of the lower guide rail when assembling. The vertical portion, the downwardly-opening, channeled portion, and the flanged portions of the upper guide rail are integrally formed by bending a piece of metal sheet. The vertical portion is formed by doubling over the metal sheet at an essentially center of the metal sheet.

Abstract: A powered seat slide device comprises upper and lower guide rails slidably fitted to each other, and a rail drive mechanism with a reversible motor and a reduction gear box. The drive mechanism includes a screw-threaded shaft being rotatable about its axis through the motor and the gear box and installed on one of the upper and lower guide rails, and a nut member being installed on another rail and screwed into the screw-threaded shaft for a relative axial motion of said screw-threaded shaft with respect to said nut member. An elastic shock-absorbing damper assembly (including essentially annular elastomeric damper) is supported on the screw-threaded shaft in front and in rear of the nut member. The damper assembly includes at least a plastic washer interposed between the nut member and the damper.