Abstract: An electrical junction box includes a circuit assembly, a first case that includes an upper wall and is provided with an accommodating portion for accommodating the circuit assembly, and a second case that is locked to the first case and covers the accommodating portion. A reservoir portion with a recessed shape capable of storing water infiltrating through a boundary between the first case and the second case is provided on the upper side of the upper wall of the accommodating portion, and the second case covers the upper side of the reservoir portion and is locked to the first case such that the distance of a gap between the upper edge of the reservoir portion and the inner surface of the second case is smaller than or equal to a predetermined distance.

Abstract: An electrical junction box that includes a circuit board on which a coil element is installed; a partition wall that surrounds the coil element and separates an installation region on the circuit board on which the coil element is installed from a region around the installation region; a frame that is formed in one piece with the partition wall and surrounds the circuit board; a heat dissipation plate on which the circuit board and the frame are placed; and a cover that covers the circuit board from the frame side, wherein the coil element is fixed to the partition wall using a synthetic resin material, and wherein the frame and the heat dissipation plate are positioned relative to each other through a recess-projection engagement, and the cover is fixed to the heat dissipation plate using screws.

Abstract: An electrical connection box includes a bus bar, a case to which the bus bar is fixed, a terminal that is connected to the bus bar, a fixing member that fixes a connection portion at which the terminal and the bus bar are connected to each other, and a base member that holds the fixing member. The fixing member and the base member are disposed at a position at which the fixing member and the base member overlap the connection portion of the bus bar, and when the connection portion at which the terminal and the bus bar are connected to each other is fixed, the base member moves in a direction in which the base member comes into contact with the bus bar.

Abstract: An electrical junction box includes an insulating substrate, a bus bar that is bonded to the insulating substrate, and a reinforcement plate that is bonded to a region of the insulating substrate to which the bus bar is not bonded. The reinforcement plate includes a through hole that allows passage of a shaft portion of a screw. A heat-dissipating member is stacked on a surface of the reinforcement plate opposite to the insulating substrate, and includes a screw hole into which the screw is screwed. A retaining member retains the respective positions of the insulating substrate, the bus bar, and the reinforcement plate, and the reinforcement plate includes an engagement portion that aligns the through hole and the screw hole by engaging with the retaining member.

Abstract: An electrical connection box includes a bus bar, a case to which the bus bar is fixed, a terminal that is connected to the bus bar, a fixing member that fixes a connection portion at which the terminal and the bus bar are connected to each other, and a base member that holds the fixing member. The fixing member and the base member are disposed at a position at which the fixing member and the base member overlap the connection portion of the bus bar, and when the connection portion at which the terminal and the bus bar are connected to each other is fixed, the base member moves in a direction in which the base member comes into contact with the bus bar.

Abstract: An electrical junction box includes a first circuit board that includes electroconductive paths; a second circuit board that includes electroconductive paths; a terminal module including (i) a plurality of terminals that connect the electroconductive paths of the first circuit board and the electroconductive paths of the second circuit board and (ii) an insulative connecting member that connects the plurality of terminals; and a retaining member that retains at least one of the first and second circuit boards. The retaining member has a fitting portion into which the connecting member is fitted.

Abstract: An electrical junction box includes an insulating substrate, a bus bar that is bonded to the insulating substrate, and a reinforcement plate that is bonded to a region of the insulating substrate to which the bus bar is not bonded. The reinforcement plate includes a through hole that allows passage of a shaft portion of a screw. A heat-dissipating member is stacked on a surface of the reinforcement plate opposite to the insulating substrate, and includes a screw hole into which the screw is screwed. A retaining member retains the respective positions of the insulating substrate, the bus bar, and the reinforcement plate, and the reinforcement plate includes an engagement portion that aligns the through hole and the screw hole by engaging with the retaining member.

Abstract: A coil assembly includes a coil unit in which a coil obtained by winding a winding wire is disposed around a magnetic core, a coil case that accommodates the coil unit, and a potting material with which an inside of the coil case is filled, and the coil case has an elastic fixing portion that is attachable to a resin member to which the coil case is to be fixed. The above-described configuration makes it possible to provide a coil assembly that is unlikely to crack and generate abnormal noises.