Abstract: A brake disc includes an annular disc body and fins. The fins are radially disposed on a back surface of the disc body. At least one of the fins have a bolt hole at a central portion of the fin in a radial direction of the disc body. The disc body includes an inner circumferential portion. The inner circumferential portion is positioned inward from the bolt hole in the radial direction. The inner circumferential portion decreases in thickness as the inner circumferential portion extends inward in the radial direction. The fins each include a top surface and a convex portion. The convex portion protrudes inward from an imaginary plane in the radial direction. The imaginary plane passes an end portion of the top surface and an inner circumferential edge of the back surface.

Abstract: A diverting agent and method for temporarily filling fractures. The diverting agent contains a powder-like polyvinyl alcohol-based resin (P1) and a pellet-like polyvinyl alcohol-based resin (P2), and has an adsorption coefficient kc of 0.01 or more and 1 or less.

Abstract: An autonomous vehicle which transports a user through autonomous driving, having: a body temperature sensor that detects a body temperature of the user; in-cabin signage attached in a vehicle cabin; and a sanitation controller that adjusts a sanitation state in the vehicle cabin. When the body temperature of the user detected by the body temperature sensor is greater than or equal to a predetermined threshold, the sanitation controller causes the in-cabin signage to display a sanitation caution message.

Abstract: A software updating method for transmitting update data for software installed in vehicle controllers via wireless communication from an operation managing server to a plurality of vehicles on which the vehicle controllers are respectively mounted, for causing each of the vehicle controllers to update the software, in which the operation managing server is configured to group the plurality of vehicles into a plurality of groups, and vary timings of causing the vehicle controllers to update the software on a group-by-group basis.

Abstract: Provided is a vehicle operation system including a first operation management server and a second operation management server. The first operation management server calculates a running route to the destination, a border point, and a scheduled arrival time at which the first vehicle is to arrive at the border point, and informs the second operation management server of these. Further, the first operation management server sends an operation instruction to the first vehicle to instruct it to run from the current position to the border point. The second operation management server sends an operation signal to a second vehicle to instruct it to arrive at the border point by the informed scheduled arrival time, and then to run from the border point to the destination after the user transfers from the first vehicle to the second vehicle at the border point.

Abstract: A single fuel cell, a plurality of which are to be stacked to form a fuel cell stack, includes a membrane electrode assembly having a structure including paired electrode layers and an electrolyte membrane held between the paired electrode layers, paired separators each forming a gas passage between the separator and the membrane electrode assembly, and a displacement absorber having a conductive property and interposed between one separator of the single fuel cell and an adjacent-side separator of another single fuel cell to be stacked adjacent to the single fuel cell. The displacement absorber is connected to at least any one of the separators.

Abstract: A laminated work production apparatus for producing a laminated work by punching a plate-like metal material into a plate-like work of a predetermined shape and stacking a plurality of the plate-like works includes a mold for punching the metal material, a stacking jig moving mechanism for moving a stacking jig to a stacking position where the plate-like works are stacked, a retention mechanism for retaining the punched plate-like works at a retaining position different from the stacking position until a preset number is reached, and a knockout mechanism for knocking out a plurality of plate-like works in a punching direction and stacking the plate-like works on the stacking jig arranged at the stacking position when the preset number of plate-like works are retained in the retention mechanism.

Abstract: A single fuel cell, a plurality of which are to be stacked to form a fuel cell stack, includes a membrane electrode assembly having a structure including paired electrode layers and an electrolyte membrane held between the paired electrode layers, paired separators each forming a gas passage between the separator and the membrane electrode assembly, and a displacement absorber having a conductive property and interposed between one separator of the single fuel cell and an adjacent-side separator of another single fuel cell to be stacked adjacent to the single fuel cell. The displacement absorber is connected to at least any one of the separators.

Abstract: Methods and apparatuses for manufacturing a press-molded product with a preform including a pair of side wall portions and a connecting wall portion are taught. The preform is pressed with a mold until at least one wall portion is bent toward a gap within the mold, and a plate thickness is increased at the at least one wall portion and the connecting wall portion by pressing other wall portions.

Abstract: A laminated work production apparatus for producing a laminated work by punching a plate-like metal material into a plate-like work of a predetermined shape and stacking a plurality of the plate-like works includes a mold for punching the metal material, a stacking jig moving mechanism for moving a stacking jig to a stacking position where the plate-like works are stacked, a retention mechanism for retaining the punched plate-like works at a retaining position different from the stacking position until a preset number is reached, and a knockout mechanism for knocking out a plurality of plate-like works in a punching direction and stacking the plate-like works on the stacking jig arranged at the stacking position when the preset number of plate-like works are retained in the retention mechanism.

Abstract: Methods and apparatuses for manufacturing a press-molded product with a preform including a pair of side wall portions and a connecting wall portion are taught. The preform is pressed with a mold until at least one wall portion is bent toward a gap within the mold, and a plate thickness is increased at the at least one wall portion and the connecting wall portion by pressing other wall portions.

Abstract: A method of producing a plate stack preform, including preparing a reinforcement stack having first and second reinforcing plates, overlapping first and second plates respectively larger in size than the first and second reinforcing plates on the first and second reinforcing plates, respectively, inserting a weld-preventing conductive plate between side peripheries of the overlapped first and second reinforcing plates, after the inserting operation, simultaneously conducting joining the first plate with the side periphery of the first reinforcing plate and joining the second plate with the side periphery of the second reinforcing plate by lap resistance welding, and then joining side peripheries of the first and second plates together by continuous welding.

Abstract: A tubing including an overlap portion formed by the first and second circumferential end portions overlapping and joined with each other, and a fluid leakage preventing member for preventing pressurized fluid from leaking from the tubing upon the tubing being subjected to hydrostatic forming. An apparatus and method for hydrostatic forming of a tubing having an overlap portion. The apparatus includes a die and a nozzle having fluid leakage preventing means for preventing the pressurized fluid supplied into the tubing from leaking from a clearance between the first and second circumferential end portions of the overlap portion of the tubing at the longitudinal end portions of the tubing.

Abstract: A method of producing a plate stack preform, including preparing a reinforcement stack having first and second reinforcing plates, overlapping first and second plates respectively larger in size than the first and second reinforcing plates on the first and second reinforcing plates, respectively, inserting a weld-preventing conductive plate between side peripheries of the overlapped first and second reinforcing plates, after the inserting operation, simultaneously conducting joining the first plate with the side periphery of the first reinforcing plate and joining the second plate with the side periphery of the second reinforcing plate by lap resistance welding, and then joining side peripheries of the first and second plates together by continuous welding.

Abstract: A tubing including an overlap portion formed by the first and second circumferential end portions overlapping and joined with each other, and a fluid leakage preventing member for preventing pressurized fluid from leaking from the tubing upon the tubing being subjected to hydrostatic forming. An apparatus and method for hydrostatic forming of a tubing having an overlap portion. The apparatus includes a die and a nozzle having fluid leakage preventing means for preventing the pressurized fluid supplied into the tubing from leaking from a clearance between the first and second circumferential end portions of the overlap portion of the tubing at the longitudinal end portions of the tubing.

Abstract: A compact vehicle production line. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.

Abstract: A compact vehicle production line is disclosed. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.

Abstract: A compact vehicle production line is disclosed. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.

Abstract: A compact vehicle production line is disclosed. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.

Abstract: An improvement on a vehicle body is provided which includes bumper brackets joining a bumper reinforcement to ends of side members extending longitudinally of the vehicle body. Each of the bumper brackets has a boss. The boss has formed therein a vertical hole extending vertically of the vehicle body and establishes a connection of the bumper reinforcement and a corresponding one of the side members through a bolt which is fitted within the vertical hole of the boss so as to allow the bumper bracket to rotate inwardly of the vehicle body within a given angular range when the impact acts on the bumper bracket upon occurrence of a font-end collision for ensuring transmission of axial collapsing pressure arising from the impact to the side members.