Abstract: A vehicular circuit body includes a trunk line that extends in at least a front-and-rear direction of a vehicle, a plurality of control boxes that are provided on the trunk line, and a branch line that connects the control box to an accessory. The trunk line and the branch line each includes a power source line having a predetermined current capacity and a communication line having a predetermined communication capacity. The control box includes a branch line connection portion to which the branch line is connected, and a branch line control unit that distributes power from the trunk line to the branch line by controlling the branch line connection portion according to a control program. The control program can be externally changed based on the accessory connected to the branch line.

Abstract: Power is supplied and a communication path secured by connecting various accessories to branch lines, each of which branches from a main line included in backbone structures. Control of power distribution and the like is implemented by communication between higher-level control units arranged in a smart power supply box, for example, and lower-level control units arranged in area drivers, for example. A switching circuit is arranged at a connection location between the main lines and the branch lines, and is automatically switched such that the terminals to be connected are coordinated. Specifications such as the current of multiple terminals on the power supply side are commonly fixed, and the power to be distributed is controlled by switching the number of terminals to be used. Component standardization and a reduction in part numbers are made easier. The connection position can be freely changed.

Abstract: A vehicular circuit body includes a plurality of control boxes, a trunk line that connects the plurality of control boxes to each other, and a branch line that directly or indirectly connects the control box to an accessory. The trunk line and the branch line each includes a power source line having a predetermined current capacity and a communication line having a predetermined communication capacity. Each of the plurality of control boxes includes a plurality of branch line connection portions to and from which the communication line of the branch line is attachable and detachable. Each of the plurality of branch line connection portions is provided with a lock function portion that is physically or electrically brought into a lock state in a case where the branch line is not connected thereto.

Abstract: A vehicular circuit body includes a trunk line that includes a power source line having a predetermined current capacity and a communication line having a predetermined communication capacity, and that is routed in a vehicle body, a branch line that is directly or indirectly connected to an accessory, and a plurality of control boxes that are disposed in a distribution manner along the trunk line, each having a control unit that distributes at least one of power from the power source line, supplied to the trunk line, and a signal from the communication line, to the branch line connected to the trunk line. The trunk line is formed of a routing material having at least one kind of conductor among a flat conductor, a round bar conductor, and a stranded wire. The communication line of the trunk line is routed so that the plurality of control boxes are connected in a ring form.

Abstract: A circuit body routing structure includes a circuit body routed, with respect to a vehicle body having a rocker on which a center pillar is erected, along the rocker. The circuit body is formed of a long flat conductor having a conductor portion of a flat cross-sectional shape. The circuit body includes a linear portion disposed overlapping an upper surface of the rocker, and a detour portion disposed overlapping a side surface of the rocker on a vehicle interior side or a side surface of the center pillar on the vehicle interior side at a junction between the rocker and the center pillar.

Abstract: A tolerance absorbing structure of a first power supply distribution box includes a connection terminal to which one end part of a flat distribution member is connected and fixed; a storage case including a connection opening member into which the connection terminal is inserted and fixed to a vehicle body; an elastic support member configured to support the connection terminal freely movably in a three-dimensional direction with respect to the connection opening member; and a flexible conductor configured to connect a substrate connection part of a circuit conductor stored in the storage case and the connection terminal with an extra length.

Abstract: There is provided a routing structure of a circuit body in a rocker formed on a vehicle body. The circuit body routing structure has a recessed housing groove formed along an extending direction of the rocker on a side surface of the rocker at a vehicle interior side, a circuit body that is formed of a long flat conductor having a conductor portion of a flat cross-sectional shape and that is housed in the housing groove and routed on the rocker, and an interior material that is mounted on the rocker so as to cover an upper surface and the side surface of the rocker, and that holds the circuit body in the housing groove.

Abstract: A tolerance absorbing structure of a first power supply distribution box includes a connection terminal to which one end part of a flat distribution member is connected and fixed; a storage case including a connection opening member into which the connection terminal is inserted and fixed to a vehicle body; an elastic support member configured to support the connection terminal freely movably in a three-dimensional direction with respect to the connection opening member; and a flexible conductor configured to connect a substrate connection part of a circuit conductor stored in the storage case and the connection terminal with an extra length.

Abstract: A circuit body routing structure includes a circuit body routed, with respect to a vehicle body having a rocker on which a center pillar is erected, along the rocker. The circuit body is formed of a long flat conductor having a conductor portion of a flat cross-sectional shape. The circuit body includes a linear portion disposed overlapping an upper surface of the rocker, and a detour portion disposed overlapping a side surface of the rocker on a vehicle interior side or a side surface of the center pillar on the vehicle interior side at a junction between the rocker and the center pillar.

Abstract: A vehicular circuit body includes a trunk line that includes a power source line and a communication line and is routed in a vehicle body, and a plurality of control boxes that are disposed in a distribution manner along the trunk line. In a vehicle, a first power source supplies power to an accessory mounted on the vehicle and a second power source supplies power which is higher in voltage than the power of the first power source to a drive source of the vehicle. The vehicular circuit body further includes a voltage drop unit that reduces the voltage of the power supplied from the second power source, to the voltage of the power of the first power source. To the power source line of the trunk line, the power from the first power source is supplied, and the power from the second power source is supplied through the voltage drop unit.

Abstract: The present invention pertains to a vehicular circuit body composed mainly a backbone trunk line portion provided in a vehicle and a plurality of backbone control boxes. An electrical connection path is realized with a structure which is simplified like a spine by connecting branch line sub-harnesses to backbone control boxes. An electrical connection between an engine room and a vehicle interior is performed by arranging a main power source cable and a part of a branch line sub-harness so as to penetrate a dash panel. Thus, it is possible to easily arrange the vehicular circuit body without reducing sealing performance of a portion penetrating the dash panel.

Abstract: A vehicular circuit body includes: a trunk line that includes a power source line having a predetermined current capacity and a communication line having a predetermined communication capacity, and that is routed in a vehicle body; a branch line that is connected to an accessory; and a plurality of control boxes that are disposed in a distribution manner along the trunk line, each having a control unit that distributes at least one of power from the power source line, supplied to the trunk line, and a signal from the communication line, to the branch line connected to the trunk line. The trunk line is formed of a routing material having at least one kind of conductor among a flat conductor, a round bar conductor, and a stranded wire.

Abstract: A vehicular circuit body includes a trunk line that includes a power source line having a predetermined current capacity and a communication line having a predetermined communication capacity, and that is routed in a vehicle body, a branch line that is directly or indirectly connected to an accessory, and a plurality of control boxes that are disposed in a distribution manner along the trunk line, each having a control unit that distributes at least one of power from the power source line, supplied to the trunk line, and a signal from the communication line, to the branch line connected to the trunk line. The trunk line is formed of a routing material having at least one kind of conductor among a flat conductor, a round bar conductor, and a stranded wire. The communication line of the trunk line is routed so that the plurality of control boxes are connected in a ring form.

Abstract: A vehicular circuit body includes a plurality of backbone control boxes, a backbone trunk line portion connecting the backbone trunk line portions to each other, and a branch line sub-harness. A trunk includes has a power source line and a communication line, and a control includes a trunk line connection portion and a branch line connection portion.

Abstract: A vehicular circuit body provided in a vehicle includes a trunk line that extends in at least a front-and-rear direction of the vehicle and a plurality of control boxes that are provided in the trunk line. The trunk line includes a power source line having a predetermined current capacity and a communication line having a predetermined communication capacity. The communication line is routed so that at least a part of the plurality of control boxes are connected in a ring form.

Abstract: A vehicular circuit body includes a trunk line that extends in at least a front-and-rear direction of a vehicle, a plurality of control boxes that are provided on the trunk line, and a branch line that connects the control box to an accessory. The trunk line and the branch line each includes a power source line having a predetermined current capacity and a communication line having a predetermined communication capacity. The control box includes a branch line connection portion to which the branch line is connected, and a branch line control unit that distributes power from the trunk line to the branch line by controlling the branch line connection portion according to a control program. The control program can be externally changed based on the accessory connected to the branch line.

Abstract: A vehicular circuit body includes a trunk line that includes a power source line and a communication line, and that is routed in a vehicle body; and a plurality of control boxes that are disposed in a distribution manner along the trunk line. The trunk line includes a first trunk line portion extending in a front-and-rear direction of the vehicle body and a second trunk line portion extending in a leftward-and-rightward direction of the vehicle body. The plurality of control boxes include a branch control box that connects the first trunk line portion and the second trunk line portion, and distributes power from one of the first trunk line portion and the second trunk line portion to the other one.

Abstract: A vehicular circuit body includes a trunk line that extends in a front-and-rear direction of a vehicle, a plurality of control boxes that are provided on the trunk line, and a branch line that connects the control box to an accessory. The trunk line and the branch line each includes a power line having a predetermined current capacity and a communication line having a predetermined communication capacity. The vehicle is divided into a plurality of regions. At least two control boxes are disposed in the regions which are different from each other, each of which includes a gateway conversing communication methods for the communication line of the branch line and the communication line of the trunk line. A plurality of the gateways are able to communicate with each other via the communication line of the trunk line.

Abstract: A vehicular circuit body provided in a vehicle includes: a trunk line that extends in at least a front-and-rear direction of the vehicle; and a plurality of control boxes that are provided in the trunk line, wherein each of the plurality of control boxes is able to connect with a branch line that is directly or indirectly connected to an accessory, and the trunk line includes a power source line and a communication line.

Abstract: A vehicular circuit body provided in a vehicle, includes: a trunk line that extends in at least a front-and-rear direction of the vehicle; and a plurality of control boxes that are provided in the trunk line, in which the trunk line includes power source lines of two systems and a communication line.