Abstract: A battery case comprises a tray member (20), a cover member (22), a first holding member (24) of a metal arranged to contact a tray flange (32) with its outer circumferential edge portion projecting outward from the tray flange by a predetermined length, a second holding member (26) of a metal arranged to contact a cover flange (36) with its outer circumferential edge portion projecting outward from the cover flange by a predetermined length, and a fastening means (28, 29) fastening the first and second holding members together at a predetermined location outwardly away from the tray and cover flanges.

Abstract: A battery case for a vehicle includes a tray member (22) made of resin and configured to hold a battery (38), one or more beam members (30) arranged so as to extend in at least one of width and longitudinal directions of the tray member, the one or more beam members supporting the tray member and having a recess (50) formed therein, and a bottom wall (58) interposed between the tray member and the one or more beam members and closing an aperture plane of the recess of the one or more beam members to form a closed cross-section, the bottom wall being constituted by a continuous metal plate underlying a bottom plate of the tray member.

Abstract: A battery case for a vehicle includes a tray member of resin, configured to hold batteries and having a plurality of projections formed on a bottom thereof, and a tray reinforcing member arranged so as to face the outer surface of the tray member and having at least one reinforcing member constituted by a metal plate, the reinforcing member being arranged on one side of the tray reinforcing member facing the tray member and raised from the one side of the tray reinforcing member. A recess is formed at least in the outer surface of one of the projections so as to correspond in position to the reinforcing member, and the reinforcing member is received in the recess.

Abstract: A battery case comprises a tray member (20), a cover member (22), a first holding member (24) of a metal arranged to contact a tray flange (32) with its outer circumferential edge portion projecting outward from the tray flange by a predetermined length, a second holding member (26) of a metal arranged to contact a cover flange (36) with its outer circumferential edge portion projecting outward from the cover flange by a predetermined length, and a fastening means (28, 29) fastening the first and second holding members together at a predetermined location outwardly away from the tray and cover flanges.

Abstract: An electric actuator that is structured simply, low in costs and high in both energy efficiency and operation accuracy and is capable of realizing frequent activation and stop is provided. In a return stroke in which a linear actuator is in low load operation state, an energy generated by an electric motor and a kinetic energy generated by movable portions when they stop are absorbed and accumulated by a coil spring. By this constitution, it becomes possible to cause the movable portions of the linear actuator to quickly stop while eliminating the necessity of giving a braking force by an electric or mechanical brake or the like and of providing a configuration designed for giving a braking force in a reliable manner such as one provided as a measure against heat generation. On the other hand, in an actuation stroke, the energy accumulated in the spring is released as operation energy of the movable portions when the spring extends and a driving force required of the electric motor is reduced.