Abstract: A vehicle seat reclining device includes a ratchet and a guide assembled to be rotatable, a plurality of pawls that are supported by a pair of guide walls provided on the guide, mesh with the ratchet, and are arranged in the relative rotation direction and restrict relative rotation between the ratchet and the guide, and a cam that moves the pawls outward. One of the pawls is a main pawl having a rattle preventing structure. The main pawl includes a bulging portion configured to abut against the pressing portion. Each of the pawls other than the main pawl do not have a bulging portion corresponding to the bulging portion of the main pawl.

Abstract: A seat reclining device includes a ratchet and a guide assembled to be rotatable relative to each other, a pawl capable of restricting relative rotation between the ratchet and the guide, and a rotation cam that pushes and moves the pawl. The pawl has an eccentric structure in which the pawl is pressed and inclined to one side in the rotation direction due to a pressing force received from the rotation cam, and has a first protrusion that restricts the inclination of the pawl by contact with a guide wall that the first protrusion faces.

Abstract: A seat reclining device includes a ratchet, a guide, and pawls for locking relative rotation between the ratchet and the guide. The ratchet has a second convex portion protruding so as to abut against a ride-up protrusion of a main pawl. The second convex portion has, only in a partial region thereof in the rotation direction, a relief concave portion configured to avoid abutment in the rotation direction between the ride-up protrusion and the second convex portion.

Abstract: A vehicle seat reclining device includes a ratchet and a guide assembled to be rotatable, a plurality of pawls that are supported by a pair of guide walls provided on the guide, mesh with the ratchet, and are arranged in the relative rotation direction and restrict relative rotation between the ratchet and the guide, and a cam that moves the pawls outward. One of the pawls is a main pawl having a rattle preventing structure. The main pawl includes a bulging portion configured to abut against the pressing portion. Each of the pawls other than the main pawl do not have a bulging portion corresponding to the bulging portion of the main pawl.

Abstract: A seat reclining device includes a ratchet and a guide assembled to be rotatable relative to each other, a pawl capable of restricting relative rotation between the ratchet and the guide, and a rotation cam that pushes and moves the pawl. The pawl has an eccentric structure in which the pawl is pressed and inclined to one side in the rotation direction due to a pressing force received from the rotation cam, and has a first protrusion that restricts the inclination of the pawl by contact with a guide wall that the first protrusion faces.

Abstract: A seat reclining device includes a ratchet, a guide, and pawls for locking relative rotation between the ratchet and the guide. The ratchet has a second convex portion protruding so as to abut against a ride-up protrusion of a main pawl. The second convex portion has, only in a partial region thereof in the rotation direction, a relief concave portion configured to avoid abutment in the rotation direction between the ride-up protrusion and the second convex portion.

Abstract: Embodiments of the present invention include a vehicle seat having a frame member and a reinforcing member for reinforcing the frame member. The frame member has an elongated portion. The elongated portion is formed of resin and preferably has a flat-plate-like or bar-like configuration. The elongated portion includes a first portion, a front second portion and a rear second portion. The first portion may be arranged in a longitudinal manner with respect to the vehicle seat and extends vertically. The front second portion extends in the lateral direction of the vehicle seat from a front end of the first portion. The rear second portion extends in the lateral direction of the vehicle seat from a rear end of the first portion. The elongated portion is configured so that a neutral axis is positioned between the front and rear second portions.

Abstract: A vehicular seat air-conditioning system comprising a blower (11) which generates blown air, an intake duct (12) which is connected to an intake side of the blower (11), a seat air-conditioning duct (13) which is connected to the in-door air-conditioning unit (21) and in which cool air which was cooled by the in-door air-conditioning unit (21) flows, and a box-shaped part (14) which is formed by a separate member from chassis members forming the cabin space and which is connected to a downstream side end of the seat air-conditioning duct (13). The box-shaped part (14) have side walls (14b) which extend in a vertical direction and a bottom (14c) which closes a space surrounded by the side walls (14b) from the lower side, the top ends of the side walls (14b) form an opening part (14a) which opens facing the upper side in the vertical direction, and an upstream side end of the intake duct (12) is inserted into the inside of the box-shaped part (14) through the opening part (14a).

Abstract: A vehicle seat including a three-dimensional woven knitted fabric including a surface-layer-side base fabric, a back-layer-side base fabric, and an intermediate layer that three-dimensionally connects the surface-layer-side base fabric and the back-layer-side base fabric, the three-dimensional woven knitted fabric being tightly stretched on a seat frame by a locking member provided to an end portion thereof to form a seat surface, wherein an edge portion of the three-dimensional woven knitted fabric has a single-layer structure, which includes only the back-layer-side base fabric among the surface-layer-side base fabric, the back-layer-side base fabric and the intermediate layer, and wherein the locking member is provided to an end portion of the back-layer-side base fabric.

Abstract: A vehicle seat is provided. The vehicle seat includes a seat main body, and a duct that is provided in the seat main body. The duct includes an inlet port through which air is supplied, a first communication pipe which is branched from the inlet port and communicates with a first outlet port, and a second communication pipe which is branched from the inlet port and communicates with a second outlet port. The duct is provided with a heating device which is configured to supply or absorb heat to or from air flowing through at least one of the first communication pipe and the second communication pipe so as to generate a temperature difference between air discharged from the first outlet port and air discharged from the second outlet port.

Abstract: Embodiments of the present invention include a vehicle seat having a frame member and a reinforcing member for reinforcing the frame member. The frame member has an elongated portion. The elongated portion is formed of resin and preferably has a flat-plate-like or bar-like configuration. The elongated portion includes a first portion, a front second portion and a rear second portion. The first portion may be arranged in a longitudinal manner with respect to the vehicle seat and extends vertically. The front second portion extends in the lateral direction of the vehicle seat from a front end of the first portion. The rear second portion extends in the lateral direction of the vehicle seat from a rear end of the first portion. The elongated portion is configured so that a neutral axis is positioned between the front and rear second portions.

Abstract: A connection end portion of an inner member is provided with engagement projections and a connection end portion of a stay is formed with reception grooves that are capable of axially receiving the engagement projections. When operation cable is axially inserted into a cylindrical support, the engagement projections are axially received in insertion grooves and are then transferred to terminal end positions thereof that are bent in one circumferential direction by a spring force of a spring member, so as to be elastically retained therein. When the stay is axially inserted into the cylindrical support in this condition, the engagement projections are axially received in the reception grooves and are then moved to terminal end positions thereof that are bent in the other circumferential direction. As a result, the operation cable is positioned in a condition in which the operation cable is suspended in the stay.

Abstract: A vehicle seat including a three-dimensional woven knitted fabric including a surface-layer-side base fabric, a back-layer-side base fabric, and an intermediate layer that three-dimensionally connects the surface-layer-side base fabric and the back-layer-side base fabric, the three-dimensional woven knitted fabric being tightly stretched on a seat frame by a locking member provided to an end portion thereof to form a seat surface, wherein an edge portion of the three-dimensional woven knitted fabric has a single-layer structure, which includes only the back-layer-side base fabric among the surface-layer-side base fabric, the back-layer-side base fabric and the intermediate layer, and wherein the locking member is provided to an end portion of the back-layer-side base fabric.

Abstract: A headrest moving mechanism includes linking members that links a support portion and a headrest base portion to each other; and elongated holes formed in the headrest base portion. The elongated holes slidably receive a connection shaft provided to the support portion, thereby determining a postural position of the support portion. The elongated holes are shaped so as to move the support portion forwardly and upwardly with respect to the headrest base portion from an initial position in a time before the vehicle back-side collision happens to a collision preparatory position as the linking members are rotated.

Abstract: A vehicle seat having a first support and a second support, and a first stay and a second stay for attaching a head rest to a seat back also includes a position adjusting mechanism and a retaining mechanism. The position adjusting mechanism adjusts positions of the stays with respect to the supports. The retaining mechanism prevents the stays from slipping out of the supports at positions above positions at which the stays are highest in an adjusted range by the position adjusting mechanism. A check hole for checking the connection state between two members, for example a cable and an operating rod, is formed in the first stay in such a position that the check hole is not visible when the stays are positioned in the adjusted range and is visible when the stays are prevented from slipping out of the supports by the retaining mechanism.

Abstract: A connection end portion of an inner member is provided with engagement protrusions, and a connection end portion of a stay is provided with reception grooves capable of axially receiving them. By inserting an operation cable into a tube of a fit-tube portion of an ascent/descent body, the engagement protrusions are axially received in insertion grooves, and are temporarily retained at terminal end portions thereof that are bent in one peripheral direction. When the stay is inserted into the tube of the fit-tube portion, the engagement protrusions are received in the reception grooves, and are transferred to terminal end portions thereof that are bent in the other peripheral direction. Through this operation, an axial connection state is attained in which the operation cable is suspended from the stay, and the headrest is attached to the ascent/descent body to become capable of ascending and descending with respect to the seat back.

Abstract: A stay is provided with an insulating member, so that only a lower stay body disposed on a lower side of the insulating member can be energized. Further, the lower stay body is set at a position in which the lower stay body is not exposed to an interior of the seat back when the head rest is vertically adjustably connected to the seat back.

Abstract: A vehicular seat air-conditioning system comprising a blower (11) which generates blown air, an intake duct (12) which is connected to an intake side of the blower (11), a seat air-conditioning duct (13) which is connected to the in-door air-conditioning unit (21) and in which cool air which was cooled by the in-door air-conditioning unit (21) flows, and a box-shaped part (14) which is formed by a separate member from chassis members forming the cabin space and which is connected to a downstream side end of the seat air-conditioning duct (13). The box-shaped part (14) have side walls (14b) which extend in a vertical direction and a bottom (14c) which closes a space surrounded by the side walls (14b) from the lower side, the top ends of the side walls (14b) form an opening part (14a) which opens facing the upper side in the vertical direction, and an upstream side end of the intake duct (12) is inserted into the inside of the box-shaped part (14) through the opening part (14a).

Abstract: A vehicle seat is provided. The vehicle seat includes a seat main body, and a duct that is provided in the seat main body. The duct includes an inlet port through which air is supplied, a first communication pipe which is branched from the inlet port and communicates with a first outlet port, and a second communication pipe which is branched from the inlet port and communicates with a second outlet port. The duct is provided with a heating device which is configured to supply or absorb heat to or from air flowing through at least one of the first communication pipe and the second communication pipe so as to generate a temperature difference between air discharged from the first outlet port and air discharged from the second outlet port.

Abstract: A connection end portion of an inner member is provided with engagement projections and a connection end portion of a stay is formed with reception grooves that are capable of axially receiving the engagement projections. When operation cable is axially inserted into a cylindrical support, the engagement projections are axially received in insertion grooves and are then transferred to terminal end positions thereof that are bent in one circumferential direction by a spring force of a spring member, so as to be elastically retained therein. When the stay is axially inserted into the cylindrical support in this condition, the engagement projections are axially received in the reception grooves and are then moved to terminal end positions thereof that are bent in the other circumferential direction. As a result, the operation cable is positioned in a condition in which the operation cable is suspended in the stay.