Abstract: A vehicle seat includes a pressure-receiving member disposed rearwardly of an occupant between left and right side frames, and a rocking mechanism configured to cause a left side or a right side of the pressure-receiving member to move frontward and rearward. The rocking mechanism includes a first link member provided pivotally, a second link member provided pivotally on the first link member and pivotally connected to the pressure-receiving member, and an actuator configured to cause the first link member and the second link member to pivot.

Abstract: Stresses are decreased at joints of a support structure disposed on a body of a dump truck. The dump truck includes a body frame (2), a body (2), a support structure (12) disposed on the body and supported by the body frame, and load transmission structures configured to transmit a load from the support structure to the body frame and, to transmit a reaction force from the body frame to the support structure. The support structure has a plurality of vertical plates (12a, 12b) and a bottom plate (12c). The vertical plates are arranged along a direction in which the reaction force is received from the body frame, and the bottom plate is maintained in upward contact with these vertical plates. The bottom plate is divided into first areas and a second area. The first areas include areas where the bottom plate is in contact with the vertical plates, and the second area is an area other than the first areas.

Abstract: A headrest includes a right headrest pillar and a left headrest pillar apart from the right headrest pillar, a fixed frame disposed on the headrest pillars, a movable frame coupled to the fixed frame with a movable mechanism, and a front-back locking mechanism locking and unlocking a front-back movement of the movable frame relative to the fixed frame. The movable frame is movable in the front-back direction relative to the fixed frame. The front-back locking mechanism includes a plurality of engaged members disposed outside the right and left headrest pillars in a width direction thereof and a locking member having a plurality of engaging portions to be respectively engaged with the engaged members to lock the movement of the movable frame.

Abstract: A compact headrest having a simplified and more compact mechanism is provided. The headrest includes a first and a second headrest pillars, and a stationary unit disposed therebetween. The stationary unit is movable in a vertical direction along the pillars. The headrest further includes a movable unit movable forward away from the stationary unit and rearward toward the stationary unit through a moving mechanism. The headrest further includes a front-rear locking mechanism having a lock receiver and a locking component engaging therewith. The front-rear locking mechanism locks and unlocks the movable unit moving in a front-rear direction to the stationary unit. The headrest further includes a vertical locking mechanism locking and unlocking the stationary unit stepwise in a vertical direction along the pillars. The headrest further includes an operation unit for simultaneously operating the front-rear locking mechanism and the vertical locking mechanism in a substantially identical direction.

Abstract: A headrest includes linkage supports with high rigidity. The headrest includes a first headrest pillar and a second headrest pillar, a stationary unit disposed between the first and the second headrest pillars, a movable unit which is movable forward away from the stationary unit and backward toward the stationary unit, and a linkage linking the stationary unit with the movable unit. The linkage includes linkage segments. The stationary unit and the movable unit include supports, respectively. The linkage segments are rotatably connected to and supported by the respective supports. The supports each have a width in the widthwise direction and a thickness in the front-rear direction, the width is greater than the thickness.

Abstract: Disclosed is a body structure for a dump truck (1) having a body frame (3). The body structure is provided with hinge pins (5) to be located toward a rear of the body frame, a body (2A) to be tiltably disposed on the body frame via the hinge pins and to be adapted to load payload (9), and stiffening members arranged on outer surfaces of the body. The body is constructed at least of a floor board (62a), a front board (62b), side boards (62c), and a canopy (62d). The stiffening members include side-board stiffeners (61) connecting upper portions of elongated joints between the side boards and the front board to portions of elongated joints between the side boards and the floor board. The latter portions are located rearward of positions laterally corresponding to a barycentric position (G) of the payload (9) in a longitudinal direction of the body.

Abstract: A headrest has suppressed components pertaining to position adjustment. The headrest includes: an affixed-side member is provided to a headrest pillar; a mobile-side member is joined to the affixed-side member with a mobile mechanism, and can move in front-back direction with respect to the affixed-side member; and a front-back locking mechanism locks and unlocks movement in front-back direction of the mobile-side member with respect to the affixed-side member. The front-back locking mechanism has: an engaged section; a locking member engages the engaged section; a biasing unit biases the locking member to the engaged section side; and a rotary operation member is held rotatably by the mobile-side member and operates the locking member. When operating the locking member, the rotary operation member rotates in direction of moving the locking member in reverse direction of the biasing direction of the biasing unit, releasing the state of engagement to the engaged section.

Abstract: A dump truck is provided with a frame, hinge pins and a body (5). The body is provided on a lower surface of a floor board (11a) thereof with a rail (12) along a longitudinal direction of the frame. The rail is a hollow structure member comprised of two side rail plates (12a) and a bottom rail plate (12b). The two side rail plates (12a) extend downwardly from the lower surface of the floor board (11a) of the body and oppose each other with an interval therebetween in a lateral direction of the frame, and the bottom rail plate (12b) is arranged in contact with respective lower end surfaces (12a-1) of these two side rail plates (12a). The dump truck (1) satisfies a relationship of Ts<Tb<Tf, where Ts is a thickness of the side rail plates, Tb is a thickness of the bottom rail plate, and Tf is a thickness of a top frame plate (2a-2) of the frame.

Abstract: A headrest is provided that can have increased comfort and safety. The headrest can include: an affixed-side member provided to a headrest pillar; a mobile-side member that is joined to the affixed-side member with a mobile mechanism therebetween and that can move in the front-back direction with respect to the affixed-side member; and a front-back locking mechanism that has an engaged section and a lock member that engages the engaged section, and that locks and unlocks the movement of the mobile-side member in the front-back direction. Also, the mobile-side member has a front-side cover for supporting a head. Furthermore, the engaged section is attached to the back surface of the front-side cover.

Abstract: A vehicle seat includes a pressure-receiving member disposed rearwardly of an occupant between left and right side frames, and a rocking mechanism configured to cause a left side or a right side of the pressure-receiving member to move frontward and rearward. The rocking mechanism includes a first link member provided pivotally, a second link member provided pivotally on the first link member and pivotally connected to the pressure-receiving member, and an actuator configured to cause the first link member and the second link member to pivot.

Abstract: A headrest includes linkage supports with high rigidity. The headrest includes a first headrest pillar and a second headrest pillar, a stationary unit disposed between the first and the second headrest pillars, a movable unit which is movable forward away from the stationary unit and backward toward the stationary unit, and a linkage linking the stationary unit with the movable unit. The linkage includes linkage segments. The stationary unit and the movable unit include supports, respectively. The linkage segments are rotatably connected to and supported by the respective supports. The supports each have a width in the widthwise direction and a thickness in the front-rear direction, the width is greater than the thickness.

Abstract: A headrest provides an improved feel on the head of an occupant and improved comfort for the occupant on a vehicle seat. The headrest includes a stationary unit to be disposed over a seat back with headrest pillars, and a movable unit which is movable forward apart from the stationary unit and rearward toward the stationary unit. The headrest further includes an X linkage linking the stationary unit with the movable unit. The X linkage includes an inside linkage segment and an outside linkage segment which are rotatably connected to each other via a connecting intersection located in the center of the X linkage. The movable unit includes a recessed portion that is bowed rearward and is disposed in the center of the movable unit in the right-left direction.

Abstract: A headrest is provided including a movable unit that can be shifted to multiple positions in the front-rear direction in a normal mode. A headrest includes first and second headrest pillars, a stationary unit disposed between the first and second headrest pillars, a movable unit movable apart from or close to the stationary unit toward a front or rear direction, an X linkage connecting the stationary unit to the movable unit and including an inside linkage segment and an outside linkage segment rotatably connected each other at a central connecting intersection, and a front-rear locking mechanism including a lock receiver and a locking component engageable with the lock receiver, to lock or unlock the movable unit movable relative to the stationary unit toward the front or rear direction.

Abstract: A compact headrest having a simplified and more compact mechanism is provided. The headrest includes a first and a second headrest pillars, and a stationary unit disposed therebetween. The stationary unit is movable in a vertical direction along the pillars. The headrest further includes a movable unit movable forward away from the stationary unit and rearward toward the stationary unit through a moving mechanism. The headrest further includes a front-rear locking mechanism having a lock receiver and a locking component engaging therewith. The front-rear locking mechanism locks and unlocks the movable unit moving in a front-rear direction to the stationary unit. The headrest further includes a vertical locking mechanism locking and unlocking the stationary unit stepwise in a vertical direction along the pillars. The headrest further includes an operation unit for simultaneously operating the front-rear locking mechanism and the vertical locking mechanism in a substantially identical direction.

Abstract: A dump truck is provided with a frame, hinge pins and a body (5). The body is provided on a lower surface of a floor board (11a) thereof with a rail (12) along a longitudinal direction of the frame. The rail is a hollow structure member comprised of two side rail plates (12a) and a bottom rail plate (12b). The two side rail plates (12a) extend downwardly from the lower surface of the floor board (11a) of the body and oppose each other with an interval therebetween in a lateral direction of the frame, and the bottom rail plate (12b) is arranged in contact with respective lower end surfaces (12a-1) of these two side rail plates (12a). The dump truck (1) satisfies a relationship of Ts<Tb<Tf, where Ts is a thickness of the side rail plates, Tb is a thickness of the bottom rail plate, and Tf is a thickness of a top frame plate (2a-2) of the frame.

Abstract: A compact headrest includes a linkage segment with high rigidity. The headrest includes a stationary unit to be disposed over a seat back with headrest pillars, and a movable unit which is movable forward away from the stationary unit and rearward toward the stationary unit. The headrest further includes an X linkage linking the stationary unit with the movable unit. The X linkage includes an inside linkage segment and an outside linkage segment which are rotatably connected to each other via a connecting intersection located in the center of the X linkage. At least one of the inside linkage segment and the outside linkage segment has a substantially U-shaped cross section. The connecting intersection is disposed at a crossover of the inside linkage segment and the outside linkage segment.

Abstract: Stresses are decreased at joints of a support structure disposed on a body of a dump truck. The dump truck includes a body frame (2), a body (2), a support structure (12) disposed on the body and supported by the body frame, and load transmission structures configured to transmit a load from the support structure to the body frame and, to transmit a reaction force from the body frame to the support structure. The support structure has a plurality of vertical plates (12a, 12b) and a bottom plate (12c). The vertical plates are arranged along a direction in which the reaction force is received from the body frame, and the bottom plate is maintained in upward contact with these vertical plates. The bottom plate is divided into first areas and a second area. The first areas include areas where the bottom plate is in contact with the vertical plates, and the second area is an area other than the first areas.

Abstract: A vehicle seat includes a pressure-receiving member disposed rearwardly of an occupant between left and right side frames, and a rocking mechanism configured to cause a left side or a right side of the pressure-receiving member to move frontward and rearward. The rocking mechanism includes a first link member provided pivotally, a second link member provided pivotally on the first link member and pivotally connected to the pressure-receiving member, and an actuator configured to cause the first link member and the second link member to pivot.

Abstract: In a vehicle seat including a seat cushion and a seat back, the seat back includes: a seat back frame F2 comprising right and left side frames 20 constituting right and left frames of the seat back; a pressure-receiving portion 41 located between the right and left side frames 20 at a rear of an occupant and configured to be movable rearward relative to the right and left side frames 20; and support portions 42 extending laterally outward from right and left end portions of the pressure-receiving portion 41 and configured to support side portions of an upper body of the occupant in the seat back.

Abstract: A body for a dump truck includes a body frame, a bottom wall, front wall and left and right side walls arranged on the body frame. The bottom wall, front wall and left and right side walls define a payload section for loading a payload, an earth/sand anti-sticking device is arranged in a corner part of the payload section to prevent earth or sand from sticking in the corner part. A steel member is arranged outside and opposite to the earth/sand anti-sticking device such that a space is formed between the steel member and the earth/sand anti-sticking device. The body includes at least one steel rib having a ridge extending out from a surface of a plate that forms the earth/sand anti-sticking device, the ridge is fixedly secured by welding to the plate that forms the earth/sand anti-sticking device.