Abstract: A reference voltage generation circuit includes a Zener diode and a current generation circuit connected to the Zener diode in parallel. The current generation circuit includes a resistance voltage divider circuit, a transistor circuit and a voltage control circuit. The resistance voltage divider circuit has a branch portion for branching the current into two paths, and outputs a reference voltage acquired by voltage division through a resistive element. The transistor circuit includes two NPN transistors and a series resistance circuit in which resistive elements are connected in series. The two NPN transistors respectively having collectors, bases and emitters. The collectors are respectively connected to the two paths. The bases have a common connection. The series resistance circuit is connected between a ground and one of the emitters. The voltage control circuit equalizes respective collector potentials of the two NPN transistors.

Abstract: Provided is a vehicle seat fitted with a cup holder that includes a support wire member (41) including a pair of longitudinal portions (45) having base ends attached to either side of a side frame and extending in a forward direction, and a cross portion (46) extending between free ends of the longitudinal portions, a housing member (42) having a pair of side walls (47, 48), a front wall (49) extending between front edges of the side walls, and side flanges (51, 52) formed in lower edges of the side walls, the side flanges resting on the longitudinal portions of the support wire member, and a cup shaped container receiving member (60) having an open top and received in the housing member, a bottom end of the container receiving member being provided with a pair of engagement features (61) that are engaged by the longitudinal portions of the support wire member.

Abstract: Provided is a seat frame including a resin material and able to secure high rigidity. The present disclosure relates to a seat frame that forms a framework of a vehicle seat on which an occupant sits, and that is formed of resin and to have a closed hollow cross-sectional shape. A resin material that forms at least a portion of the seat frame contains at least a unidirectional material which is a carbon fiber resin having a fiber orientation where fibers run in one direction, and the one direction in which the fibers of the unidirectional material run is a direction in which a tensile force is applied.

Abstract: Provided is a vehicle seat fitted with a cup holder that includes a support wire member (41) including a pair of longitudinal portions (45) having base ends attached to either side of a side frame and extending in a forward direction, and a cross portion (46) extending between free ends of the longitudinal portions, a housing member (42) having a pair of side walls (47, 48), a front wall (49) extending between front edges of the side walls, and side flanges (51, 52) formed in lower edges of the side walls, the side flanges resting on the longitudinal portions of the support wire member, and a cup shaped container receiving member (60) having an open top and received in the housing member, a bottom end of the container receiving member being provided with a pair of engagement features (61) that are engaged by the longitudinal portions of the support wire member.

Abstract: Provided is a vehicle seat which has a simple structure, prevents the lower back region of an occupant from sinking into the seat back, induces backward rotation of the entire upper body when a rear-end collision occurs, and reduces the degree to which the neck region of the occupant independently tilts backward, and is therefore able to effectively reduce the load on the neck region and so on of the occupant. A vehicle seat is provided with a neck-burden reduction element that, during a rear-end collision, causes a greater amount of backward movement of a connection point between the neck region and a torso region of the occupant than the amount of backward movement of a lower torso region of the occupant, and causes an upper torso region of the occupant to sink into the seat back.

Abstract: Provided is a vehicle seat which is capable of easily mounting a reclining mechanism mounted to a seat back frame and a resin molding part of a seat cushion frame and realizes an improved workability. A reclining mechanism arranged on the lower end side of a seat back frame and the rear end side of a seat cushion frame are coupled with a coupling member, a metal member is integrally formed on the rear end side of the seat cushion frame, an upper part of the coupling member is mounted to the reclining mechanism, and a lower part of the coupling member is welded and connected to the metal member provided on the rear end side of the seat back frame.

Abstract: Provided is a readily-attached seat frame that has a compact periphery of a stay cloth attachment portion while maintaining a high deployment performance of an airbag. A seat frame is provided in which an airbag module is disposed in a seat back frame. The seat back frame is provided with a guide member end attachment member that locks ends of guide members for facilitating the deployment of an airbag provided in the airbag module, and the attachment positions of the guide members in the guide member end attachment member are disposed at the inside of the seat back frame in relation to the attachment position of the airbag module 6.

Abstract: A vehicle seat has a first member and a second member bonded to each other with an adhesive agent is provided with a projecting portion that projects from an adhering surface of the first member toward the second member with one end to the other end in a protruding direction of the projecting parts held on the inner side of an outer edge of the adhering surface. An adhesive agent layer formed by the adhesive agent interposed between the first member and the second member surrounds the projecting portion while in contact with the outer circumferential surface of the projecting portion.

Abstract: Provided is a seat frame including a resin material and able to secure high rigidity. The present disclosure relates to a seat frame that forms a framework of a vehicle seat on which an occupant sits, and that is formed of resin and to have a closed hollow cross-sectional shape. A resin material that forms at least a portion of the seat frame contains at least a unidirectional material which is a carbon fiber resin having a fiber orientation where fibers run in one direction, and the one direction in which the fibers of the unidirectional material run is a direction in which a tensile force is applied.

Abstract: A vehicle seat with a height adjustable seat bottom, includes left and right side frames each including a main body portion extending in a front-rear direction and a mount portion for a seat back frame protruding from a rear portion of the main body portion, which side frames constitute left and right frames of the seat bottom, a height adjustment mechanism configured to allow the left and right side frames to be lifted and lowered, and an operation unit including an operation knob configured to be operated by an occupant to cause the height adjustment mechanism to be actuated which operation unit is fixed to one of the left and right side frames. The operation unit is so disposed that at least a part thereof lies over the mount portion.

Abstract: Provided is a vehicle seat which has a simple structure, prevents the lower back region of an occupant from sinking into the seat back, induces backward rotation of the entire upper body when a rear-end collision occurs, and reduces the degree to which the neck region of the occupant independently tilts backward, and is therefore able to effectively reduce the load on the neck region and so on of the occupant. A vehicle seat is provided with a neck-burden reduction element that, during a rear-end collision, causes a greater amount of backward movement of a connection point between the neck region and a torso region of the occupant than the amount of backward movement of a lower torso region of the occupant, and causes an upper torso region of the occupant to sink into the seat back.

Abstract: Provided is a vehicle seat which has a simple structure, prevents the lower back region of an occupant from sinking into the seat back, induces backward rotation of the entire upper body when a rear-end collision occurs, and reduces the degree to which the neck region of the occupant independently tilts backward, and is therefore able to effectively reduce the load on the neck region and so on of the occupant. A vehicle seat is provided with a neck-burden reduction element that, during a rear-end collision, causes a greater amount of backward movement of a connection point between the neck region and a torso region of the occupant than the amount of backward movement of a lower torso region of the occupant, and causes an upper torso region of the occupant to sink into the seat back.

Abstract: Provided is a slide rail mechanism including a movable rail that is difficult to deform even if an external force acts on the movable rail and that is stably kept in a state in which a portion of the movable rail is inserted into an inner space of a lower rail. Of an upper rail, an inner portion inserted into an inner space of a hollow-shaped lower rail includes a region having a closed cross-section in a slidable movement direction of the upper rail, a normal direction of the closed cross-section being the slidable movement direction.

Abstract: A vehicle seat has a first member and a second member bonded to each other with an adhesive agent is provided with a projecting portion that projects from an adhering surface of the first member toward the second member with one end to the other end in a protruding direction of the projecting parts held on the inner side of an outer edge of the adhering surface. An adhesive agent layer formed by the adhesive agent interposed between the first member and the second member surrounds the projecting portion while in contact with the outer circumferential surface of the projecting portion.

Abstract: An attachment structure for a connecting member for seat and an attachment member includes a connecting member for seat in a form of a pipe and an attachment member provided with an engaging part to engage with an end portion of the connecting member for seat. The engaging part includes a plurality of contact portions circumferentially arrayed with a predetermined interval to make contact with an inner circumferential surface of the connecting member for seat, and a plurality of non-contact portions, each provided between the contact portions, making no contact with the inner circumferential surface of the connecting member for seat. An adhesive is applied to the non-contact portion when the engaging part of the attachment member engages with the end portion of the connecting member for seat.

Abstract: A vehicle seat frame includes a resin first frame segment and a resin second frame segment. The first and second frame segments constitute a closed cross-sectional structure. The first frame segment has protrusions protruding toward the second frame segment. The protrusions are in contact with the second frame segment so as to provide a space between the first and second frame segments. The space is filled with an adhesive.

Abstract: Provided is a vehicle seat having a seatback frame formed by combining a plurality of frames, wherein the number of components can be kept small, and functional members can be supported in a highly rigid and highly stable manner. The vehicle seat is configured to include at least a seatback frame for supporting the back of an occupant, and the seatback frame includes at least a frame main body formed by combining a front frame constituting the front portion, and a rear frame constituting the rear portion. In the portion where the front frame and the rear frame are joined, there are formed cylindrical support portions for supporting a headrest, and the support portions are configured having openings for inserting connection members for connecting the headrest and the frame main body.

Abstract: Provided is an airbag module equipped seat that has high attachment rigidity when a guide member for guiding the deployment direction of an airbag module is attached to the airbag module by using an attachment member. An airbag module equipped seat includes a side frame that extends along a side portion of the seat, an airbag module that is attached to the side frame, and a guide member that is attached to a trim cover of the seat to guide the deployment direction of the airbag module. The side frame includes a plurality of side frame elements that extend along the side portion of the seat and are connected to each other in at least one position while facing each other, and the guide member is attached to the side frame.

Abstract: A vehicle seat with a height adjustable seat bottom, comprises side frames (30) which constitute the seat bottom, front links (5) and rear links (6) pivotally connected to the side frames (30), slide rails (4) disposed under the side frames (30) to form a four-bar linkage with the side frames (30), the front links (5) and the rear links (6), and an operation unit (7) including an operation knob (71 B) configured to be operated to make a rotational motion which actuates the four-bar linkage for adjustment of a height of the seat bottom. The operation unit (7) includes a pinion gear (73) configured to be rotatable coaxially with the operation knob (71B) provided at one of the pair of side frames (30), and the front links (5) include a sector gear portion (51) configured to engage with the pinion gear (73), such that rotation of the pinion gear (73) causes the front links (5) to pivot.

Abstract: Provided is a vehicle seat which is capable of easily mounting a reclining mechanism mounted to a seat back frame and a resin molding part of a seat cushion frame and realizes an improved workability. A reclining mechanism arranged on the lower end side of a seat back frame and the rear end side of a seat cushion frame are coupled with a coupling member, a metal member is integrally formed on the rear end side of the seat cushion frame, an upper part of the coupling member is mounted to the reclining mechanism, and a lower part of the coupling member is welded and connected to the metal member provided on the rear end side of the seat back frame.