-- A first electrical connection box includes a housing, a holder (50) that is provided inside the housing and holds an electrical component, and a terminal block (60) attached to the holder (50). The terminal block (60) includes a terminal support base (61) attached to the holder (50), and a busbar (62) supported on the terminal support base (61). The busbar (62) includes a planar first connection surface (84) to which a first wire (21) is to be electrically connected, and a planar second connection surface (86) to which a second wire (22) is to be electrically connected, the second wire (22) being different from the first wire (21). When a direction perpendicular to the first connection surface (84) is defined as a first direction (X11), the second connection surface (86) is perpendicular to a second direction (X12) that intersects with the first direction (X11). --

An electric power device includes a power control unit that is fixed to an upper portion of an automatic transmission case, with a gap interposed between the power control unit and the automatic transmission case, and a battery that is connected to the power control unit by a first wire extending rearward in a vehicle front-rear direction from the power control unit.

An electrical junction box is provided in which a wire that is drawn from a lower surface of an upper electric component block is accommodated with an excess length in an extensible tube capable of being extended and contracted in the length direction of the wire. In the extended state of the extensible tube, the upper electric component block can be separated from an upper surface of the lower electric component block by extending the excess length of the wire in the extensible tube. In the contracted state of the extensible tube, the extensible tube is accommodated between the upper electric component block and the lower electric component block in a state in which the wire meanders in the extensible tube and the excess length is absorbed.

An electronic control device 10 includes a circuit board 13 and first and second members 14, 15. Various electronic components are mounted on the circuit board. The first member has the circuit board attached thereto, and has a groove 14a in the periphery of an attachment part for the circuit board. The second member has a protrusion 15a to be placed in the groove. The groove and the protrusion are joined with first adhesive to form an internal space and a casing that accommodates the circuit board. Retention parts 18-1,18-2 that retain excess adhesive are provided in the groove in the first member. Each of the retention parts opens into an inner side wall of the groove.

A modular system has at least a first module (A, B) and a second module (D, E, H). The modules are configured such that a first apparatus having the first and second modules (A, B, D, E, H) is configured as a first control unit (1) for a first traction battery of a first motor vehicle. The first module (A, B) is configured for first functions of the first control unit (1) and the second module (D, E, H) is configured for second functions of the first control unit (1). The first module (A, B) also is configured such that a second apparatus having the first module (A, B) without the second module (D, E, H) is configured as the second control unit (2, 3) for a second traction battery of a second motor vehicle, with the second functions being absent from the second control unit (2, 3).

An electrical connection box is provided with a connector-attached board and a shield case that internally houses the connector-attached board. The connector-attached board is provided with a circuit board, a connector that is fixed to the circuit board and that engages with a mating connector, and an attachment that is attached to the connector. The shield case surrounds the circuit board and is provided with an upper short wall portion and a lower short wall portion that include a connector opening for facing the connector outside. The attachment is provided with a waterproof portion that covers the periphery of an engagement surface of the connector that faces the mating connector, and the waterproof portion is provided with a waterproof wall that covers the periphery of the connector and the mating connector.

A vehicle wheel-side apparatus incorporated into a vehicle wheel rotated around a steering rotation central axis with steering includes: an apparatus body; and a plurality of connection parts provided to the apparatus body, wherein each of the plurality of connection parts is a portion to which a wire-like transmission member extending from a vehicle body is connected, and each of the plurality of connection parts keeps the wire-like transmission member in a posture so that the wire-like transmission member is drawn from the apparatus body toward the steering rotation central axis.

An undercarriage wiring module includes: a wiring member connecting a vehicle body side apparatus and a vehicle wheel side apparatus; and a support member supporting the wiring member, wherein the wiring member includes a first wire-like transmission member and a second wire-like transmission member thinner than the first wire-like transmission member, and the support member supports the wiring member so that the first wire-like transmission member is located closer to a steering rotation central axis than the second wire-like transmission member in at least a part of the wiring member.

A modularly expandable electronic control unit comprises: an electronic circuit board on which a conductor track is disposed on a side in a region of lateral edges and enclosing an inner region and separating it from an outer region of the side, a housing having two halves for receiving the electronic circuit board. With the housing assembled, at least one housing half has an encircling electrically conductive shielding wall which rests on and establishes electrical contact with the conductor track and/or has at least one receptacle accessible from outside the assembled housing. The receptacle is disposed so the electronic module placed in the receptacle may be electrically connected to a module connection port disposed in the outer region of the electronic circuit board. The electronic circuit board has electrical connections between the module connection port and one or more electronic assemblies disposed on the inner region.

An electronic control unit (1) includes a connector (2), the connector includes a connector main body (21) and a plurality of terminals (23), the connector main body includes an attachment surface (24) and a seal arrangement portion (210) on a surface (25), the seal arrangement portion includes a first seal arrangement portion (211) formed in an arrangement direction of the terminals, and a second seal arrangement portion (212) that is continuous with both end portions (213) of the first seal arrangement portion and is inclined toward the electronic control board side as it goes toward the other end side facing one end side of an electronic control board (6), the first seal arrangement portion includes a plurality of predetermined portions (2112) formed so as to be directed toward the electronic control board side from a center side of the first seal arrangement portion toward both end sides of the first seal arrangement portion at both end portions of the first seal arrangement portion, the cover (3) includes a plurality of bent portions (312) formed so as to be directed toward the electronic control board side from a center side of the cover toward both end sides of the cover, and each of the predetermined portions is in contact with each of the bent portions.