Abstract: This relay unit includes: a first bus bar; a relay electrically connected to the first bus bar; and an apparatus cover for covering the first bus bar and the relay. The apparatus cover includes: an upper member in a box shape having a covered upper end, the upper member having an opening formed in a lower end; and a lower member bonded to the upper member such that the opening of the upper member is covered with the lower member. The lower member is formed of a resin having heat conductivity that is higher than that of the upper member. The first bus bar is connected to the lower member via a first inner heat conductive sheet such that heat can be transferred to the lower member, said first inner heat conductive sheet being disposed between the first bus bar and the lower member.

Abstract: A novel wire harness connecting structure for a housed circuit assembly is provided. The connecting structure is able to electrically connect a wire harness and a circuit assembly housed in a housing to each other, using a small number of parts, with high space efficiency. The wire harness connecting structure for housed circuit assemblies is used to electrically connect wire harnesses to circuit assemblies housed in a housing, wherein through holes are provided in a wall of the housing, circuit assembly connectors that are provided in the circuit assemblies face the through holes, and harness end connectors that are provided at ends of the wire harnesses are configured to be inserted into the through holes of the housing and to be connected to the circuit assembly connectors of the circuit assemblies.

Abstract: A wire harness connecting structure for two circuit assemblies is provided. The structure allows a wire harness to be easily connected to two circuit assemblies with high space efficiency, and can reduce noise in the wire harness. A first connection terminal is provided in a first circuit assembly and a second connection terminal is provided in a second circuit assembly are located adjacent to each other. Two electrical wire-side connection terminals are respectively provided at an end of a first electrical wire and an end of a second electrical wire are housed and positioned in a shared connector housing, and thus a single harness end connector is formed. A wire harness is constituted by the first electrical wire and the second electrical wire. The electrical wire-side connection terminals of the wire harness are configured to be electrically connected to the first connection terminal and the second connection terminal.

Abstract: This relay unit includes: a first bus bar; a relay electrically connected to the first bus bar; and an apparatus cover for covering the first bus bar and the relay. The apparatus cover includes: an upper member in a box shape having a covered upper end, the upper member having an opening formed in a lower end; and a lower member bonded to the upper member such that the opening of the upper member is covered with the lower member. The lower member is formed of a resin having heat conductivity that is higher than that of the upper member. The first bus bar is connected to the lower member via a first inner heat conductive sheet such that heat can be transferred to the lower member, said first inner heat conductive sheet being disposed between the first bus bar and the lower member.

Abstract: A novel wire harness connecting structure for a housed circuit assembly is provided. The connecting structure is able to electrically connect a wire harness and a circuit assembly housed in a housing to each other, using a small number of parts, with high space efficiency. The wire harness connecting structure for housed circuit assemblies is used to electrically connect wire harnesses to circuit assemblies housed in a housing, wherein through holes are provided in a wall of the housing, circuit assembly connectors that are provided in the circuit assemblies face the through holes, and harness end connectors that are provided at ends of the wire harnesses are configured to be inserted into the through holes of the housing and to be connected to the circuit assembly connectors of the circuit assemblies.

Abstract: A wire harness connecting structure for two circuit assemblies is provided. The structure allows a wire harness to be easily connected to two circuit assemblies with high space efficiency, and can reduce noise in the wire harness. A first connection terminal is provided in a first circuit assembly and a second connection terminal is provided in a second circuit assembly are located adjacent to each other. Two electrical wire-side connection terminals are respectively provided at an end of a first electrical wire and an end of a second electrical wire are housed and positioned in a shared connector housing, and thus a single harness end connector is formed. A wire harness is constituted by the first electrical wire and the second electrical wire. The electrical wire-side connection terminals of the wire harness are configured to be electrically connected to the first connection terminal and the second connection terminal.