A headrest device ensures the movement of a headrest frame body to a stay and enables a foaming resin molding of a headrest. A support portion having a semicircular cross section and restricting portions having an approximately U-shape cross section are formed on a plate body. Two sheets of plate bodies are connected with each other in an opposed manner. Then, a headrest pad made of foaming resin is integrally formed with the plate bodies.
A headrest device includes a stay member having a pair of vertical supporting bars adapted to be supported on a seat back of a vehicle seat and a horizontal supporting bar connecting the pair of vertical supporting bars, and a frame member having a connecting portion rotatably mounted on the horizontal supporting bar with a friction force existing between the horizontal supporting bar and the frame member. The frame member is provided with a slit extending along the connecting portion of the frame member and having ends extending towards the connecting portion. The portion of the frame defined by the slit can be resiliently deformed in the peripheral direction of the horizontal supporting bar and serve as a fulcrum point for adjusting the strength of the rotational friction force of the connecting portion.
A bus seat comprising an aisle support having a first hexagonally shaped aperture or cavity and a window side support having a second hexagonally shaped aperture or cavity. A seat is hinged to the aisle support and the window support. A seat back is employed which has hexagonally shaped apertures or cavities which each interengage hexagonal shaped torsion members which in turn interengage the cavities in the aisle and window supports. The first and second hexagonally shaped torsion members in combination with the apertures inhibit rotation of the seat back with respect to the aisle and the window side supports and absorb energy when the seat back is rotated relative to the aisle and window supports. The hexagonally shaped cavities are manufactured without significant knit lines formed as the flowability of fiber reinforced polymeric material is enhanced.
A head restraint arrangement for a vehicle seat and a method of manufacture. The head restraint arrangement comprises a support member, a cushion disposed around the support member, and an insert panel disposed in the cushion. The insert panel moves toward the support member in response to force exerted by a head of a seat occupant to distribute force and reduce deformation of the cushion.
