Abstract: In a vehicle seat foldable by rotation of rotary links disposed below a seat cushion in a direction toward the seat cushion, a front end portion of the seat cushion includes a suspending portion of a cushion pad and a skin material covering the suspending portion. Contact portions of the front end portion of the seat cushion contacting the rotary links when the vehicle seat is in a folded state include a recessed portion provided at the suspending portion, and a flexible plate provided at an outer skin material downwardly extending along a front surface of the suspending portion in the skin material covering the recessed portion. The flexible plate is configured to restore the shape of the outer skin material when the rotary links are separated from the contact portions.

Abstract: A first member (back board 50) is provided with: a first plate-like portion 81 protruding in a first direction from the first member; a second plate-like portion 82 protruding in the first direction from the first member and located opposite the first plate-like portion in a second direction that is orthogonal to the first direction; a first engagement portion 81a protruding from a distal end portion of the first plate-like portion 81 toward the second plate-like portion 82 at a position shifted to a first side in a third direction that is orthogonal to the first direction and the second direction; and a second engagement portion 82a protruding from a distal end portion of the second plate-like portion 82 toward the first plate-like portion 81 at a position shifted to a second side that is opposite to the first side in the third direction, and the second member (main side frame 21) is provided with a first rod-like portion 91 configured to be disposed between the first plate-like portion 81 and the second pla

Abstract: A connector with built-in bent optical fibers includes an optical fiber array including a plurality of bent optical fibers each having a bent portion and a linear portion formed integrally with the bent portion, a ferrule having a plurality of positioning mechanisms that align end portions of the plurality of bent optical fibers, and a resin portion disposed at an outer periphery of the bent portion. The resin portion is filled in the ferrule. The bent portion has a bending angle of 85°-150°. When the bent portion of one bent optical fiber is divided into a plurality of regions along a longitudinal direction at 10°, a variation in bend radius among the plurality of regions excluding regions corresponding to 10° at both ends is 0.3 mm or less, an outer diameter of the bent portion of the bent optical fiber is smaller than an outer diameter of the linear portion.

Abstract: A vehicle seat which can retract a seat body in a refraction floor with components of a refraction structure not arranged on a surface of the retraction floor is provided by a simple structure. This includes: a support leg detachably retained by a leg retaining member, located on a vehicle body floor, and supporting a seat cushion; and a support base connected to the vehicle body floor to support a pivotable seat back. The seat back pivots relative to the support base to move the seat cushion to the refraction floor. The support leg pivots relative to the seat cushion in accordance with a pivotal movement of the seat back and reaches from the leg retaining member when the seat back has reached a predetermined pivoted position. The support leg is positioned lower than the leg retaining member when the vehicle seat is in a retracted state.

Abstract: A vehicle seat capable of housing a seat main body includes a seat pivot shaft to which the seat main body is connected to be pivotable, and a detachable leg whose upper end is mounted to the seat main body and whose lower end is detachably held onto a leg holding member on a vehicle body floor. When the seat main body moves from a housed state side to a usage state side, a leg guide portion causes a cushion abutting portion to abut a base abutting portion in advance, thereby guiding the detachable leg moving together with the seat main body to pass above a leg movement inhibiting portion which is a portion of a support base.

Abstract: An automotive folding seat device includes a seat support platform that is mounted on a floor, a cushion storage mechanism that is capable of moving a seat cushion from an in-use position to a storage position, a reclining mechanism that is capable of selectively holding a seat back at a raised position and a dropped-down position, and a coupling mechanism that provides a link between the reclining mechanism and the cushion storage mechanism, wherein the floor has formed thereon an elevated surface and a low surface, which is lower than the elevated surface, the seat support platform is mounted on the elevated surface, and the cushion storage mechanism is arranged so as to be capable of moving the seat cushion from the in-use position, which is higher than the elevated surface, to the storage position, which is close to the low surface.

Abstract: A vehicle seat is provided in which a projecting part is integrally provided in a middle part of a lower frame of a seat back frame forming a framework of a seat back and is extending further forward and upward than the lower frame. This enables the impact absorption when the seat back receives an impact load from the rear to be enhanced, while stabilizing the supporting force applied to the occupant by the seat back for supporting the occupant's back.

Abstract: A vehicle seat is provided in which a pressure-receiving member receiving the back of an occupant through an upper linking wire is supported on a seat back frame of a seat back, and an abutment member is provided on the pressure-receiving member, the abutment member restricting an amount of flexing of the pressure-receiving member by abutting against the upper linking wire when the amount of flexing exceeds a predetermined amount. This enables the amount of flexing of the pressure-receiving member for supporting the back of the occupant to be restricted, thereby stabilizing the support of the occupant.

Abstract: A vehicular seat capable of housing a seat back and a seat cushion connected to the seat back in a housing floor provided in a position lower than a vehicle body floor is described. The vehicular seat includes a support base connected to the vehicle body floor and to a lower end side of the seat back, a support leg having an upper end side mounted to the seat cushion and a lower end side connectable to the support base, and a leg holding member mounted to the support base and that detachably holds the lower end side of the support leg. The seat back is connected to the support base via right and left connecting brackets disposed on sides of the seat back and having first end sides mounted to corresponding lower end sides of the seat back and second end sides pivotally connected to the support base.

Abstract: A vehicle seat having a seat back and seat cushion connected to the seat back, the seat back and seat cushion being retractable to a retraction floor disposed lower than a vehicle body floor, is described. The vehicle seat includes: a support base connected to the vehicle body floor, disposed below the seat cushion, and pivotally connected to a lower end of the seat back; a detachable leg having an upper end attached to the seat cushion and lower end connectable to the support base; a leg retaining member attached to the support base to detachably retain the lower end of the detachable leg; and a base cover that covers the support base. The leg retaining member is disposed at a rear side of a front end of a portion of the base cover in a front to back direction of the seat to cover the support base from above.

Abstract: A vehicle seat which can retract a seat body in a refraction floor with components of a refraction structure not arranged on a surface of the retraction floor is provided by a simple structure. This includes: a support leg detachably retained by a leg retaining member, located on a vehicle body floor, and supporting a seat cushion; and a support base connected to the vehicle body floor to support a pivotable seat back. The seat back pivots relative to the support base to move the seat cushion to the refraction floor. The support leg pivots relative to the seat cushion in accordance with a pivotal movement of the seat back and reaches from the leg retaining member when the seat back has reached a predetermined pivoted position. The support leg is positioned lower than the leg retaining member when the vehicle seat is in a retracted state.

Abstract: A vehicle seat compactly stowed in a stowed state while suppressing contact between pivot links. A stowable seat includes an inner link, an outer link, and a guide link coupled to a seat cushion of the seat, the links are pivoted with respect to a vehicle body floor in order to move the seat cushion to a stowed position. The inner link, the outer link, and the guide link are arranged at positions different from each other in the width direction of the seat so that contact between the pivot links is suppressed. Further, the guide link is arranged at a position different from the inner link and the outer link in the front to back direction of the seat so that the seat can be compactly stowed.

Abstract: In a vehicle seat, left and right first frames extending in a front-rear direction are disposed apart from each other in a lateral direction. Each first frame includes a bottom wall to which a load sensor for measuring a weight of an occupant is attached, and sidewalls extending upward from left and right sides of the bottom wall. One or each of front and rear end portions of the left first frame is connected to a corresponding end portion of the right first frame by a connecting member. The bottom wall of at least one of the left and right first frames includes a connecting portion that is an end portion of the bottom wall to which the connecting member is connected and which extends outward in the front-rear direction farther beyond outer edges of the sidewalls, bending around the connecting member to its outer side in the front-rear direction.

Abstract: A vehicle seat is provided in which a pressure-receiving member receiving the back of an occupant through an upper linking wire is supported on a seat back frame of a seat back, and an abutment member is provided on the pressure-receiving member, the abutment member restricting an amount of flexing of the pressure-receiving member by abutting against the upper linking wire when the amount of flexing exceeds a predetermined amount. This enables the amount of flexing of the pressure-receiving member for supporting the back of the occupant to be restricted, thereby stabilizing the support of the occupant.

Abstract: A vehicle seat is provided in which a projecting part is integrally provided in a middle part of a lower frame of a seat back frame forming a framework of a seat back and is extending further forward and upward than the lower frame. This enables the impact absorption when the seat back receives an impact load from the rear to be enhanced, while stabilizing the supporting force applied to the occupant by the seat back for supporting the occupant's back.

Abstract: A first member (back board 50) is provided with: a first plate-like portion 81 protruding in a first direction from the first member; a second plate-like portion 82 protruding in the first direction from the first member and located opposite the first plate-like portion in a second direction that is orthogonal to the first direction; a first engagement portion 81a protruding from a distal end portion of the first plate-like portion 81 toward the second plate-like portion 82 at a position shifted to a first side in a third direction that is orthogonal to the first direction and the second direction; and a second engagement portion 82a protruding from a distal end portion of the second plate-like portion 82 toward the first plate-like portion 81 at a position shifted to a second side that is opposite to the first side in the third direction, and the second member (main side frame 21) is provided with a first rod-like portion 91 configured to be disposed between the first plate-like portion 81 and the second pla

Abstract: A vehicle seat (car seat S) includes a cushion member (seat back pad P), a support member (side frames 20) configured to support right and left portions of the cushion member, and a compressing member (skin member E and back board 50) configured to compress side portion constituent portions P31 which constitute the right and left portions of the cushion member.

Abstract: An optical amplifier device comprising an input/output section that inputs incident light and outputs emission light; a polarized light splitting section that causes a polarized light component of the incident light input from the input/output section to branch, and outputs first polarization mode light having a first polarization and second polarization mode light having a second polarization different from the first polarization; a polarization converting section that receives the first polarization mode light, converts the first polarization to the second polarization, and outputs first polarization converted light; and an optical amplifying section that amplifies the first polarization converted light input to one end of a waveguide, outputs the resulting amplified first polarization converted light from another end of the waveguide, amplifies the second polarization mode light input to the other end of the waveguide, and outputs the resulting amplified second polarization mode light from the one end of t

Abstract: The invention of the present application provides an SOA-PLC hybrid integrated polarization diversity circuit including a PLC-PBS chip and an SOA-COS whose respective waveguides are coupled to each other. The PLC-PBS chip includes: first and second optical waveguides; a Mach-Zehnder interferometer circuit; and a half-wave plate placed in the first optical waveguide which TM mode light is split into. The SOA-COS includes: a third optical waveguide connected to the first optical waveguide; a fourth optical waveguide connected to the second optical waveguide; and an SOA formed in at least one of the third and fourth optical waveguides. One end of the third optical waveguide and one end of the fourth optical waveguide are connected to a U-turn optical waveguide, the one ends being not connected to the first optical waveguide and the second optical waveguide, respectively.

Abstract: An optical amplifier device comprising an input/output section that inputs incident light and outputs emission light; a polarized light splitting section that causes a polarized light component of the incident light input from the input/output section to branch, and outputs first polarization mode light having a first polarization and second polarization mode light having a second polarization different from the first polarization; a polarization converting section that receives the first polarization mode light, converts the first polarization to the second polarization, and outputs first polarization converted light; and an optical amplifying section that amplifies the first polarization converted light input to one end of a waveguide, outputs the resulting amplified first polarization converted light from another end of the waveguide, amplifies the second polarization mode light input to the other end of the waveguide, and outputs the resulting amplified second polarization mode light from the one end of t