# US 2019/0168695 A1 · Circuit body for vehicle and manufacturing method of circuit body for vehicle

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- Number: US 2019/0168695 A1
- Document ID: US20190168695A1
- Status: Published application
- Kind: A1
- Application number: 16/208,453
- Filed: 2018-12-03
- Published: 2019-06-06
- Earliest claimed: 2017-12-04
- Assignees: Yazaki Corporation
- Applicants: Yazaki Corporation
- Inventors: Masashi Nakamura; Masahiro Furukawa; Satoshi Enomoto; Akiyoshi Kanazawa
- Web page: https://patentgrep.com/patent/US20190168695A1

## CPC

- B60R 16/0207: {Wire harnesses}
- B60R 16/0215: {Protecting, fastening and routing means therefor}
- B60R 16/0239: {Electronic boxes}
- B60R 16/03: for supply of electrical power to vehicle subsystems {or for (circuit arrangements for charging batteries H02J7/00)}
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR

## Abstract

A circuit body for a vehicle is wired on a vehicle body of the vehicle for performing supply of electric power to an electrical component and communication of various communication signals with the electrical component. The circuit body includes: a plurality of control boxes separately disposed on the circuit body and capable of controlling input and output of at least one of the electric power and the communication signal; a trunk line harness connecting one of the plurality of control boxes and another of the plurality of control boxes; and a branch line harness connecting the control box and the electrical component. The trunk line harness includes a power line for transmitting electric power and a communication line for transmitting communication signals in a separated state. An end portion of the power line and an end portion of the communication line are connected to the control box.

## Claims

### Claim 1

A circuit body for a vehicle which is wired on a vehicle body of the vehicle for performing supply of electric power to an electrical component and communication of various communication signals with the electrical component, the circuit body comprising:
a plurality of control boxes separately disposed on the circuit body and capable of controlling input and output of at least one of the electric power and the communication signal;
a trunk line harness connecting one of the plurality of control boxes and another of the plurality of control boxes; and
a branch line harness connecting the control box and the electrical component,
wherein the trunk line harness comprises a power line for transmitting electric power and a communication line for transmitting communication signals in a separated state, and
wherein an end portion of the power line and an end portion of the communication line are connected to the control box.

### Claim 2 (depends on 1)

The circuit body according to claim 1,
wherein the branch line harness comprises one or more branch line harnesses which differ in accordance with a steering wheel position of the vehicle, and one or more branch line harnesses which are common regardless of the steering wheel position, and
the trunk line harness has a common structure regardless of the steering wheel position.

### Claim 3

A manufacturing method of a circuit body for a vehicle which is wired on a vehicle body of the vehicle for performing supply of electric power to an electrical component and communication of various communication signals with the electrical component, the circuit body comprising: a plurality of control boxes separately disposed on the circuit body and capable of controlling input and output of at least one of the electric power and the communication signal; a trunk line harness connecting one of the plurality of control boxes and another of the plurality of control boxes; and a branch line harness connecting the control box and the electrical component,
the manufacturing method comprising:
attaching connectors to end portions of a power line for transmitting electric power and a communication line for transmitting a communication signal so as to constitute the trunk line harness;
connecting the trunk line harness and the plurality of control boxes according to a predetermined routing shape; and
connecting the branch line harness and the plurality of control boxes according to a predetermined routing shape.

### Claim 4 (depends on 3)

The manufacturing method of the circuit body according to claim 3,
wherein the branch line harness comprises: one or more branch line harnesses which differ in accordance with a steering wheel position of the vehicle; and one or more branch line harnesses which are common regardless of the steering wheel position, and
wherein the trunk line harness has a common structure regardless of the steering wheel position.

### Claim 5 (depends on 3)

The manufacturing method of the circuit body according to claim 3,
wherein a part of the trunk line harness is selectively connected to the control box based on whether to form a loop structure in which at least part of the plurality of control boxes is annularly connected via the trunk line harness.