Terminal-equipped wire and wire harness with resin coating on terminal fitting

Patent metadata

Field	Value
Publication number	US-10290957-B2
Application number	US-201815993989-A
Country	US
Kind code	B2
Filing date	May 31, 2018
Priority date	Jun 16, 2017
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

A terminal-equipped wire includes a wire with a core wire and an insulating coating with which the core wire is coated, and a terminal fitting that is attached to a leading end of the wire. The terminal fitting is electrically connected to the core wire in a core-wire crimp portion, and is fixed to the wire from an external side of the insulating coating in a coating crimp portion that is located rearward of the core-wire crimp portion in a longitudinal direction of the wire. The terminal-equipped wire also includes a resin-coated portion where a region containing the core-wire crimp portion and the coating crimp portion is coated with a resin. The resin-coated portion has a thin-walled portion with a reduced thickness, in a portion of the resin-coated portion that covers the insulating coating.

First claim

What is claimed is:

1. A terminal-equipped wire comprising:
a wire with a core wire and an insulating coating with which the core wire is coated;
a terminal fitting that is attached to a leading end of the wire, the terminal fitting being electrically connected to the core wire in a core-wire crimp portion and being fixed to the wire from an external side of the insulating coating in a coating crimp portion that is located rearward of the core-wire crimp portion in a longitudinal direction of the wire; and
a resin-coated portion where a region containing the core-wire crimp portion and the coating crimp portion are coated with a resin,
wherein, in a portion of the resin-coated portion that covers the insulating coating, the resin-coated portion has a thin-walled portion with a reduced thickness, and
the resin-coated portion has a polygonal shape in a cross section that is orthogonal to the longitudinal direction of the wire, and has the thin-walled portion in at least one corner portion of the polygonal shape.

2. The terminal-equipped wire according to claim 1 ,
wherein the resin-coated portion has a polygonal shape in a cross section that is orthogonal to the longitudinal direction of the wire, and has the thin-walled portion in every corner portion of the polygonal shape.

3. The terminal-equipped wire according to claim 1 ,
wherein a width, in the longitudinal direction of the wire, of the thin-walled portion at a surface of the resin-coated portion is 1% or more of a length of a portion of the resin-coated portion that covers the insulating coating.

4. The terminal-equipped wire according to claim 1 ,
wherein the resin from which the resin-coated portion is made is a polyester resin.

5. A wire harness comprising the terminal-equipped wire according to claim 1 .

6. A terminal-equipped wire comprising:
a wire with a core wire and an insulating coating with which the core wire is coated;
a terminal fitting that is attached to a leading end of the wire, the terminal fitting being electrically connected to the core wire in a core-wire crimp portion and being fixed to the wire from an external side of the insulating coating in a coating crimp portion that is located rearward of the core-wire crimp portion in a longitudinal direction of the wire; and
a resin-coated portion where a region containing the core-wire crimp portion and the coating crimp portion are coated with a resin,
wherein, in a portion of the resin-coated portion that covers the insulating coating, the resin-coated portion has a thin-walled portion with a reduced thickness, and
the insulating coating of the wire is exposed in at least a partial region of the thin-walled portion.

7. A terminal-equipped wire comprising:
a wire with a core wire and an insulating coating with which the core wire is coated;
a terminal fitting that is attached to a leading end of the wire, the terminal fitting being electrically connected to the core wire in a core-wire crimp portion and being fixed to the wire from an external side of the insulating coating in a coating crimp portion that is located rearward of the core-wire crimp portion in a longitudinal direction of the wire; and
a resin-coated portion where a region containing the core-wire crimp portion and the coating crimp portion are coated with a resin,
wherein, in a portion of the resin-coated portion that covers the insulating coating, the resin-coated portion has a thin-walled portion with a reduced thickness, and
a resin thickness of the thin-walled portion discontinuously changes in the longitudinal direction of the wire.

8. A terminal-equipped wire comprising:
a wire with a core wire and an insulating coating with which the core wire is coated;
a terminal fitting that is attached to a leading end of the wire, the terminal fitting being electrically connected to the core wire in a core-wire crimp portion and being fixed to the wire from an external side of the insulating coating in a coating crimp portion that is located rearward of the core-wire crimp portion in a longitudinal direction of the wire; and
a resin-coated portion where a region containing the core-wire crimp portion and the coating crimp portion are coated with a resin,
wherein, in a portion of the resin-coated portion that covers the insulating coating, the resin-coated portion has a thin-walled portion with a reduced thickness, and
the thin-walled portion has a tapered structure in which a width of the thin-walled portion in the longitudinal direction of the wire gradually narrows from an external side that is away from the wire toward a center of the wire.

Assignees

• Autonetworks Technologies Ltd
• Sumitomo Wiring Systems
• Sumitomo Electric Industries

Inventors

• Yamashita Takuya
• Nakamura Tetsuya
• Yamano Yoshiaki
• Ono Junichi
• Otsuka Takuji
• Ito Takaaki

Classifications

• H01R43/005

  for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing · CPC title

• H01R43/24

  Assembling by moulding on contact members · CPC title

• H01R43/048

  Crimping apparatus or processes (H01R43/042 takes precedence) · CPC title

• H02G15/046

  with bores or protruding portions allowing passage of cable conductors · CPC title

• H02G15/007

  Devices for relieving mechanical stress · CPC title