Abstract: The front pillar includes a pillar outer panel and a pillar inner panel. The pillar outer panel is disposed on an outside in a vehicle width direction. The pillar inner panel is disposed on an inside in the vehicle width direction. The pillar outer panel and the pillar inner panel form a closed cross-section. A cowl extends in the vehicle width direction and includes a cowl-side bent portion. The cowl-side bent portion is an end of the cowl on the outside in the vehicle width direction that is bent toward a rear side in a vehicle front-rear direction, and laid and welded on the outside in the vehicle width direction of a front end of the pillar inner panel.

Abstract: To obtain a laser joining structure and a laser joining method that can suppress a decrease in strength or rigidity of a third plate that is disposed at an interval apart from at least two metal plates. A laser joining structure has at least two metal plates whose superposed region, at which the at least two metal plates are superposed with one another, is joined by laser welded portions at two or more places, and a third plate that is disposed at an interval apart from the superposed region. A through-portion, that passes-through the third plate and through which laser light is irradiated onto the superposed region and that is of a number that is less than a number of the laser welded portions, is formed in the third plate.

Abstract: A vehicle upper section structure for a vehicle having a roof panel formed with an opening, a roof side rail, a cover member for the opening, and a pillar joined to the roof side rail, the vehicle upper section structure including: a frame that extends along a vehicle width direction further to an inside than the roof panel and the roof side rail; a movement section that is disposed at a vehicle width direction end portion of the frame and further to an upper side than the frame, and that moves the cover member; a roof reinforcement that extends along the vehicle width direction further to an upper side than the frame and the movement section, and that reinforces the roof panel; and a section that couples together the frame and the roof reinforcement in the vehicle up-down direction, further to the vehicle width direction inside than the movement section.

Abstract: The front pillar includes a pillar outer panel and a pillar inner panel. The pillar outer panel is disposed on an outside in a vehicle width direction. The pillar inner panel is disposed on an inside in the vehicle width direction. The pillar outer panel and the pillar inner panel form a closed cross-section. A cowl extends in the vehicle width direction and includes a cowl-side bent portion. The cowl-side bent portion is an end of the cowl on the outside in the vehicle width direction that is bent toward a rear side in a vehicle front-rear direction, and laid and welded on the outside in the vehicle width direction of a front end of the pillar inner panel.

Abstract: A vehicle frame structure includes a pair of hat-shaped panels that form a portion of a vehicle, each hat-shaped panel having a hat-shaped cross-section, the pair of hat-shaped panels facing each other and forming a closed sectional portion; a partition panel that is sandwiched by the pair of hat-shaped panels, and divides an inside of the closed sectional portion; and a laser welded portion where all of four or more plates including the pair of hat-shaped panels and the partition panel are overlapped and welded together at an identical position by laser welding.

Abstract: Provided are: a laser-bonded structure wherein deterioration of strength or rigidity of a third plate is suppressed, said third plate being disposed by being spaced apart from at least two metal plates; and a laser bonding method. The laser-bonded structure is provided with: at least two metal plates, which have two or more overlapping portions where the metal plates are disposed in a state wherein the metal plates are overlapping each other, and which are bonded by means of laser welding sections; and a third plate that is disposed by being spaced apart from the overlapping portions. The third plate has formed therein penetrating sections of a number smaller than the number of the laser welding sections, said penetrating sections penetrating the third plate, and having laser light radiated to the overlapping portions.

Abstract: A vehicle frame structure includes a pair of hat-shaped panels that form a portion of a vehicle, each hat-shaped panel having a hat-shaped cross-section, the pair of hat-shaped panels facing each other and forming a closed sectional portion; a partition panel that is sandwiched by the pair of hat-shaped panels, and divides an inside of the closed sectional portion; and a laser welded portion where all of four or more plates including the pair of hat-shaped panels and the partition panel are overlapped and welded together at an identical position by laser welding.

Abstract: A vehicle-body member joining structure includes: laser welded portions at which at least two panel members each constituting part of a vehicle body and made of a steel sheet are joined to each other by laser welding in a state where a predetermined gap is formed therebetween; and an electrodeposition coating film portion covering surfaces of the panel members and filling at least part of the gap.

Abstract: A multi-terminal power line protective relay system is provided, which divides a power transmission line having four or more terminals into two or more power line sections composed of three adjacent terminals and portions of the power transmission line lying among the three adjacent terminals and one of the three adjacent terminals being shared by two adjacent power line sections, and includes protective relays at the respective terminals including a current-driven differential protective relay element for detecting a fault occurring in a power line section through current-differential calculation by using measured currents, inter-terminal communication channels linking two protective relays at two different terminals; and intra-terminal communication channels linking two protective relays at each shared terminal.

Abstract: A multi-terminal power line protective relay system is provided, which divides a power transmission line having four or more terminals into two or more power line sections composed of three adjacent terminals and portions of the power transmission line lying among the three adjacent terminals and one of the three adjacent terminals being shared by two adjacent power line sections, and includes protective relays at the respective terminals including a current-driven differential protective relay element for detecting a fault occurring in a power line section through current-differential calculation by using measured currents, inter-terminal communication channels linking two protective relays at two different terminals; and intra-terminal communication channels linking two protective relays at each shared terminal.

Abstract: A front side member has: a front frame portion disposed such that a longitudinal direction of the front frame portion runs along a vehicle longitudinal direction; a rear frame portion which is offset toward a vehicle bottom side with respect to the front frame portion at a vehicle rear side of the front frame portion, and which is disposed such that a longitudinal direction of the rear frame portion runs along the vehicle longitudinal direction; and a connecting frame portion connecting a rear end of the front frame portion and a front end of the rear frame portion. A concave portion is formed at a vehicle top-bottom direction intermediate portion of the connecting frame portion. A dash cross member, which is disposed such that a longitudinal direction of the dash cross member runs along a vehicle transverse direction, is provided within the concave portion.

Abstract: A front side member has: a front frame portion disposed such that a longitudinal direction of the front frame portion runs along a vehicle longitudinal direction; a rear frame portion which is offset toward a vehicle bottom side with respect to the front frame portion at a vehicle rear side of the front frame portion, and which is disposed such that a longitudinal direction of the rear frame portion runs along the vehicle longitudinal direction; and a connecting frame portion connecting a rear end of the front frame portion and a front end of the rear frame portion. A concave portion is formed at a vehicle top-bottom direction intermediate portion of the connecting frame portion. A dash cross member, which is disposed such that a longitudinal direction of the dash cross member runs along a vehicle transverse direction, is provided within the concave portion.

Abstract: A module construction method in a steel structure building zone, including steps of: erecting truss column assemblies (1A), (1B) formed by arranging and joining a plurality of pillars; installing a truss beam assembly (1C) between the tops of the two truss column assemblies (1A), (1B) erected in parallel to construct a gate-shaped truss assembly (1D); installing the gate-shaped truss assemblies (1D) in opposition to fit in with the shape of the steel structure; and installing modules (6A), (6B), (6C) . . .