Abstract: A passenger-seat airbag (32) includes a pair of left and right airbags (44, 46), and a root portion (48) that is connected to both of the left and right airbags (44, 46). When the passenger-seat airbag (32) is provided in a vehicle, an airbag folded portion (62) that forms the left and right airbags (44, 46) is positioned closer to the rear of the vehicle than the root portion (48) is, and a slack portion (49) that forms the root portion (48) is made upright along the airbag folded portion (62), and is positioned closer to the front of the vehicle than the airbag folded portion (62) is. Thus, the slack portion (49) is expanded and deployed toward a windshield earlier to form “a wall”. Then, the left and right airbags (44, 46) are stably deployed toward a passenger seat (toward the rear of the vehicle).

Abstract: A passenger-seat airbag includes a left airbag and a right airbag. A root portion connects a left-airbag root portion and a right-airbag root portion. An accordion-folded portion with relatively small folding widths is formed by accordion-folding both side portions of the root portion, whereby at least a gas-injection hole closest to each of both ends of an inflator in a longitudinal direction among a plurality of the gas-injection holes of the inflator is prevented from being closed by the root portion when the passenger-seat airbag is provided in a vehicle.

Abstract: Head restraint supporting structure of the present invention is such that a head restraint bracket supporting a head restraint is secured to a seat back frame, a stay of the head restraint being inserted into the head restraint bracket. Wherein the head restraint bracket is formed into a tubular shape by joining two end portions of a plate material having been bent, and is secured to the front face of the seat back frame so that junction between the two end portions abuts against the seat back frame. A reinforcement structure is formed at the upper end of the junction. This reinforcement structure prevents the upper end of the junction from being opened by a load being applied to the head restraint, thereby allowing the head restraint 9 to restrain reliably the rearward movement of occupant's head and hence to reliably protect the occupant's neck.

Abstract: When a vehicle is rear-ended and a seated user moves rearward in reaction to the rear-end collision, a load movement of a lumbar part of the seated user is sufficiently transmitted from a pressure plate of operating force generating means to an operating force generating mechanism, regardless of an amount of rearward tilting of a seat back. Then, a pressure roller serving as a driven member of the operating force generating mechanism largely deflects and sufficiently pulls inner cables of respective pulling cable devices, thereby smoothly moving both end portions of a headrest frame upward. As a result, the headrest frame is moved upward smoothly and reliably, and a headrest is moved in an upward-forward direction, that is, toward the head of the seated user smoothly and reliably.

Abstract: When a vehicle is rear-ended and a seated user moves rearward in reaction to the rear-end collision, a load generated by a rearward movement of a lumbar portion of the seated user is transmitted from a pressure plate of operating force generating means to an operating force generating mechanism. Then, a pressure roller of the operating force generating mechanism deflects and pulls inner cables of pulling cable devices, thereby moving both end portions of a headrest frame upward. As a result, the headrest frame is moved upward along with headrest supporting brackets smoothly and reliably, whereby a headrest attached to the headrest supporting brackets with headrest stays arranged between the headrest and the respective headrest supporting brackets is moved in the upward-forward direction, that is, toward the head of the seated user smoothly and reliably.

Abstract: When a vehicle is rear-ended and a seated user moves rearward in reaction to the rear-end collision, a load movement of a lumbar part of the seated user is sufficiently transmitted from a pressure plate of operating force generating means to an operating force generating mechanism, regardless of an amount of rearward tilting of a seat back. Then, a pressure roller serving as a driven member of the operating force generating mechanism largely deflects and sufficiently pulls inner cables of respective pulling cable devices, thereby smoothly moving both end portions of a headrest frame upward. As a result, the headrest frame is moved upward smoothly and reliably, and a headrest is moved in an upward-forward direction, that is, toward the head of the seated user smoothly and reliably.

Abstract: When a vehicle is rear-ended and a seated user moves rearward in reaction to the rear-end collision, a load generated by a rearward movement of a lumbar portion of the seated user is transmitted from a pressure plate of operating force generating means to an operating force generating mechanism. Then, a pressure roller of the operating force generating mechanism deflects and pulls inner cables of pulling cable devices, thereby moving both end portions of a headrest frame upward. As a result, the headrest frame is moved upward along with headrest supporting brackets smoothly and reliably, whereby a headrest attached to the headrest supporting brackets with headrest stays arranged between the headrest and the respective headrest supporting brackets is moved in the upward-forward direction, that is, toward the head of the seated user smoothly and reliably.

Abstract: Head restraint supporting structure of the present invention is such that a head restraint bracket supporting, a head restraint is secured to a seat back frame, a stay of the head restraint being inserted into the head restraint bracket. Wherein the head restraint bracket is formed into a tubular shape by joining two end portions of a plate material having been bent, and is secured to the front face of the seat back frame so that junction between the two end portions abuts against the seat back frame. A reinforcement structure is formed at the upper end of the junction. This reinforcement structure prevents the upper end of the junction from being opened by a load being applied to the head restraint, thereby allowing the head restraint 9 to restrain reliably the rearward movement of occupant's head and hence to reliably protect the occupant's neck.

Abstract: Granules/lumps poly-silicon raw material, low in raw material cost and free of the hazard of crack is additionally charged into a crucible in a safe and steady manner. In a single crystal growth according to the CZ method, poly-silicon raw material ins initially charged into a crucible. Above the initially charged poly-silicon raw material, a heat resistant tubular container is placed. The granules/lumps poly-silicon raw material for use in additional charging is charged inot the tubular container. The poly-silicon raw material initially charged into the crucible is melted. The poly-silicon raw material in the tubular container gradually and spontaneously comes down into the crucible, as the bulk of poly-silicon raw material is decreased according to the melting of the initially charged raw material.

Abstract: Granules/lumps poly-silicon raw material, low in raw material cost and free of the hazard of crack, is additionally charged into a crucible in a safe and steady manner.