Electric junction box for vehicle
An electric junction box for a vehicle includes a housing including a connector housing configured to be fitted to a counterpart connector, a plurality of connector terminals being provided in the connector housing, a joint busbar accommodated in the housing, the joint busbar integrally including a plurality of terminals configured to be respectively connected to ground terminals of the counterpart connector, the plurality of terminals being provided as a part of the plurality of connector terminals, and a conductive member supported by the housing and configured to be grounded to a vehicle body. The joint busbar includes a plate-shaped connection piece connected to the conductive member. The conductive member includes an elastic connection portion that is in elastic contact with the connection piece.
1 . An electric junction box for a vehicle, the electric junction box comprising:
a housing including a connector housing configured to be fitted to a counterpart connector, a plurality of connector terminals being provided in the connector housing;
a joint busbar accommodated in the housing and having a plate shape that includes a first side and a second side opposite to the first side, the joint busbar integrally including a plurality of terminals on the first side and configured to be respectively connected to ground terminals of the counterpart connector, the plurality of terminals being provided as a part of the plurality of connector terminals;
a circuit board accommodated in the housing; and
a conductive member supported by the housing and configured to be grounded to a vehicle body, wherein
the joint busbar includes a plate-shaped connection piece protruding from the second side of the joint busbar and being connected to the conductive member,
the conductive member includes an elastic connection portion that is in elastic contact with the connection piece,
the housing is provided with an insertion hole through which the conductive member is inserted from outside to inside the housing, and a guide portion,
the guide portion guides the conductive member to a position at the second side of the joint busbar where the conductive member is fitted to the connection piece of the joint busbar when the conductive member is inserted into the housing from outside through the insertion hole, and
the plurality of connector terminals, other than the plurality of terminals, are protruding from the second side of the joint busbar and connected to the circuit board.
2 . The electric junction box for a vehicle according to claim 1 , wherein
the conductive member is provided with, as the elastic connection portion, a pair of clamping pieces that clamp the connection piece of the joint busbar such that the connection piece is inserted between the clamping pieces.
3 . The electric junction box for a vehicle according to claim 2 , wherein
the connection piece of the joint busbar is provided with a recess portion, and
at least one of the pair of clamping pieces of the conductive member is provided with a protrusion that prevents the connection piece from coming off from the pair of clamping pieces by engaging with the recess portion of the connection piece.
4 . The electric junction box for a vehicle according to claim 1 , wherein
the conductive member is provided with, at an end portion of a portion of the conductive member that is inserted into the housing, a first fork terminal as the elastic connection portion, and
the first fork terminal is fitted to the connection piece of the joint busbar when the conductive member is inserted into the housing from outside.
5 . The electric junction box for a vehicle according to claim 1 , wherein a first part of the conductive member is inside the housing, and a second part of the conductive member is located outside the housing through the insertion hole.
6 . The electric junction box for a vehicle according to claim 5 , wherein the second part of the conductive member located outside the housing comprises a spring portion that comes into elastic contact with a grounding bracket fastened to the vehicle.
7 . The electric junction box for a vehicle according to claim 1 , wherein
the plurality of connector terminals, other than the plurality of terminals, are integrally included on the second side of the joint busbar, and
the plurality of connector terminals, other than the plurality of terminals, each extend along a length direction between a first end and a second end, the first end being integrally included on the second side of the joint busbar, and the second end being connected to the circuit board.
8 . An electric junction box for a vehicle, the electric junction box comprising:
a housing including a connector housing configured to be fitted to a counterpart connector, a plurality of connector terminals being provided in the connector housing;
a joint busbar accommodated in the housing, the joint busbar integrally including a plurality of terminals configured to be respectively connected to ground terminals of the counterpart connector, the plurality of terminals being provided as a part of the plurality of connector terminals; and
a conductive member supported by the housing and configured to be grounded to a vehicle body, wherein
the joint busbar includes a plate-shaped connection piece connected to the conductive member,
the conductive member includes an elastic connection portion that is in elastic contact with the connection piece,
the housing is provided with an insertion hole through which the conductive member is inserted from outside to inside the housing,
the conductive member is provided with, at an end portion of a portion of the conductive member that is inserted into the housing, a first fork terminal as the elastic connection portion,
the first fork terminal is fitted to the connection piece of the joint busbar when the conductive member is inserted into the housing from outside,
the conductive member is provided with a spring portion at another end portion of another portion of the conductive member that is located outside the housing, and
the spring portion is configured to come into elastic contact with a grounding bracket fastened to the vehicle body.
9 . An electric junction box for a vehicle, the electric junction box comprising:
a housing including a connector housing configured to be fitted to a counterpart connector, a plurality of connector terminals being provided in the connector housing;
a joint busbar accommodated in the housing, the joint busbar integrally including a plurality of terminals configured to be respectively connected to ground terminals of the counterpart connector, the plurality of terminals being provided as a part of the plurality of connector terminals; and
a conductive member supported by the housing and configured to be grounded to a vehicle body, wherein
the joint busbar includes a plate-shaped connection piece connected to the conductive member,
the conductive member includes an elastic connection portion that is in elastic contact with the connection piece,
the housing is provided with an insertion hole through which the conductive member is inserted from outside to inside the housing,
the conductive member is provided with, at an end portion of a portion of the conductive member that is inserted into the housing, a first fork terminal as the elastic connection portion,
the first fork terminal is fitted to the connection piece of the joint busbar when the conductive member is inserted into the housing from outside,
the housing is provided with a circuit board, and the circuit board has a ground circuit connected to a base end of a second conductive member, and
the second conductive member is provided with, at a top end, a second fork terminal fitted to the connection piece of the joint busbar.