Abstract: A vehicle seat is provided comprising a seat back frame having right and left side frames, a headrest for supporting a head of a seat occupant, and a back-and-forth movable body provided inside a backrest that is positioned at a rear of the seat occupant, wherein a backward movement of the back-and-forth movable body forwardly moves the headrest to support the head of the seat occupant. The back-and-forth movable body is attached to each side frame through a link member and is provided with a backward protrusion protruding backward, and the backward protrusion extends laterally.

Abstract: A vehicle seat of the invention includes: a rectangular-shaped seat back frame (5) having a pair of side frames (6); a plurality of seat springs (34A, 34B) disposed between the side frames; a single plate-shaped flexible cushion plate (31) attached to the seat springs; a seat cushion (9) provided on the front side of the cushion plate; link mechanisms (15, 35) provided near the side frames; and a headrest (4) coupled to the link mechanisms (15). Both ends of the seat spring (34B) are coupled to the link mechanisms. When the seat spring (34B) is moved rearward, the headrest is moved forward. Both sides of each of the remaining seat springs (34A) are mounted to the side frames.

Abstract: A backrest frame 5 is provided with a cushion plate 31 of one substantially square plate form positioned behind the waist from the upper part of the back of a vehicle seat occupant, movably back and forth by way of a plurality of upper and lower parallel seat springs, one end of either one of a pair of right and left seat springs 34B of the plurality of upper and lower parallel seat springs is connected to a pair of lower link mechanisms 35 provided rotatably on the backrest frame 5, and a rear end collision sensor 40 is formed by the cushion plate 31 between the seat springs 34B for moving a headrest 4 forward, and a coupling part 39 of the other end of the seat spring 34B is directly attached to the lower link mechanism 35.

Abstract: When a pressure receiving plate provided at a seat back moves to a rear side of a vehicle body when a vehicle is collided from behind, a Bowden cable transmits movement of the pressure receiving plate to a headrest ascending mechanism as a tensile load, thereby quickly ascending a headrest to reliably hold a head of an occupant. The Bowden cable transmits only the tensile load, and hence the Bowden cable is not buckled. Reduction in weight is made possible as compared with the case using a rod for transmitting a compression load. Since the Bowden cable is light, it is not required to unreasonably place the pressure receiving plate at a position near the headrest ascending mechanism for reduction in weight, and hence the pressure receiving plate can be placed at the optimal position where a sufficient driving force is obtained at the time of collision. Thus, a headrest is ascended with favorable responsiveness upon a rear-end collision of a vehicle while using a thin transmission member with low rigidity.

Abstract: A vehicle seat of the invention has an upper movable member (10) supporting a headrest (3), a lower movable member (30) provided inside a backrest, and a coupling mechanism for coupling the upper movable member and the lower movable member. The coupling mechanism includes an upper link mechanism (15) positioned in an upper part of a side frame (40) and coupled to the upper movable member, a lower link mechanism (32) positioned in a lower part of the side frame and coupled to the lower movable member, and a rod (27) extending along the side frame and coupling the upper link mechanism and the lower link mechanism. The upper link mechanism amplifies a backward moving amount of the lower movable member, and moves the headrest forward.

Abstract: A vehicle seat of the invention includes: a rectangular-shaped seat back frame (5) having a pair of side frames (6); a plurality of seat springs (34A, 34B) disposed between the side frames; a single plate-shaped flexible cushion plate (31) attached to the seat springs; a seat cushion (9) provided on the front side of the cushion plate; link mechanisms (15, 35) provided near the side frames; and a headrest (4) coupled to the link mechanisms (15). Both ends of the seat spring (34B) are coupled to the link mechanisms. When the seat spring (34B) is moved rearward, the headrest is moved forward. Both sides of each of the remaining seat springs (34A) are mounted to the side frames.

Abstract: In a back portion of a seat back provided with a lumbar support portion 20 and a side support portion 21, a seat back cover 30 for covering a back face of the seat back is provided. The seat back cover 30 is provided with a side portion 32 for covering an air bag module 50 by making a forward end portion, which is extended to the front side of a vehicle, come into contact with the side support portion 21. The side support portion 21 is provided being capable of oscillating to the front side of the vehicle with respect to the lumbar support 20. An air bag module 50 is arranged in an accommodation space 90 provided on the rear side of the side support portion 21.

Abstract: In a back portion of a seat back provided with a lumbar support portion 20 and a side support portion 21, a seat back cover 30 for covering a back face of the seat back is provided. The seat back cover 30 is provided with a side portion 32 for covering an air bag module 50 by making a forward end portion, which is extended to the front side of a vehicle, come into contact with the side support portion 21. The side support portion 21 is provided being capable of oscillating to the front side of the vehicle with respect to the lumbar support 20. An air bag module 50 is arranged in an accommodation space 90 provided on the rear side of the side support portion 21.

Abstract: When a pressure receiving plate provided at a seat back moves to a rear side of a vehicle body when a vehicle is collided from behind, a Bowden cable transmits movement of the pressure receiving plate to a headrest ascending mechanism as a tensile load, thereby quickly ascending a headrest to reliably hold a head of an occupant. The Bowden cable transmits only the tensile load, and hence the Bowden cable is not buckled. Reduction in weight is made possible as compared with the case using a rod for transmitting a compression load. Since the Bowden cable is light, it is not required to unreasonably place the pressure receiving plate at a position near the headrest ascending mechanism for reduction in weight, and hence the pressure receiving plate can be placed at the optimal position where a sufficient driving force is obtained at the time of collision. Thus, a headrest is ascended with favorable responsiveness upon a rear-end collision of a vehicle while using a thin transmission member with low rigidity.

Abstract: A holder for mounting an air bag module, the holder including a bottomed, substantially box-like body having a peripheral wall and an opening, the holder adapted to be fastened to a side plate of a seat back frame in a cavity of a back pad with the opening thereof facing a body of an automotive vehicle and with a bottom plate section thereof being applied to the side plate, and wrapped at the peripheral wall thereof by margin pieces which are provided around an opening portion in a side of a seat cover, rolled in the holder from the opening of the holder, and fastened to the holder, the air bag module having an air bag housed within an air bag case, the air bag module adapted to be incorporated in the holder and fastened to the side plate through the holder, whereby the air bag module is installed in the side of the seat back, the holder further including flanges, and at least first and second brittle sections serving as breaking portions, the peripheral wall including a front side wall section facing a front

Abstract: A module case having an air bag module accommodated therein is disposed in a side face of a seat back, so that a lid of the module case is opened by a pressure of an air bag expanded upon a side collision of a vehicle, and the air bag is deployed through the resulting opening, termed the “primary” opening into a vehicle compartment. As a result of a tear line provided in the module case, even if the lid is held down by the door which has been deformed by a shock resulting from the collision, so that the lid cannot be opened to provide the primary opening, the tear line in a case body of the module case is broken, whereby a front wall is pivoted forwardly to form an alternate or “secondary” opening from the module case. Therefore, the air bag can be deployed without hindrance through the alternate secondary opening defined in the front wall of the module case into the vehicle compartment.

Abstract: A holder for mounting an air bag module, the holder including a bottomed, substantially box-like body having a peripheral wall and an opening, the holder adapted to be fastened to a side plate of a seat back frame in a cavity of a back pad with the opening thereof facing a body of an automotive vehicle and with a bottom plate section thereof being applied to the side plate, and wrapped at the peripheral wall thereof by margin pieces which are provided around an opening portion in a side of a seat cover, rolled in the holder from the opening of the holder, and fastened to the holder, the air bag module having an air bag housed within an air bag case, the air bag module adapted to be incorporated in the holder and fastened to the side plate through the holder, whereby the air bag module is installed in the side of the seat back, the holder further including flanges, and at least first and second brittle sections serving as breaking portions, the peripheral wall including a front side wall section facing a front