IP Library Granted Patent US 12706228
Granted Patent B2
US 12706228 · App. 18/707,679 · Granted Aug 11, 2026

Wiring system

Inventors: Haruka Nakano (Mie, JP); Masaki Mizushita (Mie, JP); Yuya Fukami (Mie, JP); Jun Yamasaki (Mie, JP); Hitomi Nagasawa (Mie, JP); Motohiro Yokoi (Mie, JP)
Assignee: SUMITOMO WIRING SYSTEMS, LTD.
H01B7/0045H01B7/009
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Quick Facts
Patent No.
US 12706228
App. No.
18/707,679
Granted
Aug 11, 2026
Kind
B2
Abstract

A wiring system includes: a main wire-side wiring member including a plurality of main wire-side circuits and a plurality of main wire-side connectors, the plurality of main wire-side circuits bundled in a form with a plurality of connection ends; and a terminal-side wiring member including a terminal-side connector connected to any one of the plurality of main wire-side connectors and a terminal-side circuit connected to the terminal-side connector, wherein the plurality of main wire-side connectors include an extra-thin electrical wire connector, the plurality of main wire-side circuits include a plurality of extra-thin electrical wire connector connection circuits connected to the extra-thin electrical wire connector, and the plurality of extra-thin electrical wire connector connection circuits include an extra-thin electrical wire having a conductor cross-sectional area of 0.13 sq or less as an extra-thinnest electrical wire having a smallest conductor cross-sectional area.

Claims (25)

1 . A wiring system, comprising:

a main wire-side wiring member including a plurality of main wire-side circuits and a plurality of main wire-side connectors, the plurality of main wire-side circuits bundled in a form with a plurality of connection ends, and the plurality of main wire-side connectors connected to the plurality of connection ends, respectively; and

a terminal-side wiring member including a terminal-side connector connected to any one of the plurality of main wire-side connectors and at least one terminal-side circuit connected to the terminal-side connector, the terminal-side connector connected to any one of the plurality of main wire-side connectors so that the terminal-side circuit is electrically connected to at least some of the plurality of main wire-side circuits, wherein

the plurality of main wire-side connectors include an extra-thin electrical wire connector,

the plurality of main wire-side circuits include a plurality of extra-thin electrical wire connector connection circuits connected to the extra-thin electrical wire connector,

the plurality of extra-thin electrical wire connector connection circuits include at least one extra-thin electrical wire having a conductor cross-sectional area of 0.13 square mm or less as an extra-thinnest electrical wire having a smallest conductor cross-sectional area,

the terminal-side circuit includes a relative thick electrical wire having a conductor cross-sectional area larger than a conductor cross-sectional area of the extra-thinnest electrical wire,

the extra-thinnest electrical wire is connected to the relative thick electrical wire by connection of the terminal-side connector to the extra-thin electrical wire connector, and

the plurality of main wire-side circuits include a relative thick electrical wire having a conductor cross-sectional area larger than a conductor cross-sectional area of the extra-thinnest electrical wire.

2 . The wiring system according to claim 1 , wherein

the plurality of main wire-side circuits include a multipurpose circuit and a main wire-side circuit by use, and the wiring system exclusively includes as the terminal-side wiring member;

the terminal-side connector is one of a first purpose connector and a second purpose connector;

a first purpose wiring member including the first purpose connector and a first purpose circuit as the terminal-side circuit; and

a second purpose wiring member including the second purpose connector and a second purpose circuit as the terminal-side circuit,

when the first purpose connector is connected to the extra-thin electrical wire connector, the multipurpose circuit is connected to the first purpose circuit, and when the second purpose connector is connected to the extra-thin electrical wire connector, the multipurpose circuit is connected to the second purpose circuit, and

when the main wire-side circuit by use is connected to the first purpose circuit when the first purpose connector is connected to the extra-thin electrical wire connector, or is connected to the second purpose circuit when the second purpose connector is connected to the extra-thin electrical wire connector.

3 . The wiring system according to claim 1 , wherein

at least one of the plurality of main wire-side circuits connected to the extra-thin electrical wire connector is in an opened state while the terminal-side connector is connected to the extra-thin electrical wire connector.

4 . The wiring system according to claim 1 , wherein

the extra-thinnest electrical wire is an extra-thin electrical wire having a conductor cross-sectional area of 0.08 square mm or less.

5 . The wiring system according to claim 1 , wherein

the terminal-side wiring member includes the plurality of terminal-side circuits, and

the plurality of terminal-side circuits are branched to a plurality of circuits from the terminal-side connector to be connected to a plurality of electrical components while the terminal-side connector is connected to the extra-thin electrical wire connector.

6 . The wiring system according to claim 1 , wherein

a ratio of a total number of the extra-thin electrical wires having a conductor cross-sectional area of 0.13 square mm or less to a total number of the plurality of main wire-side circuits is equal to or larger than 40%.