Terminal-attached electric wire and method of manufacturing terminal-attached electric wire

Patent metadata

Field	Value
Publication number	US-2021376500-A1
Application number	US-201816760260-A
Country	US
Kind code	A1
Filing date	Nov 9, 2018
Priority date	Nov 15, 2017
Publication date	Dec 2, 2021
Grant date	—

Abstract

A terminal-attached electric wire includes: an insulated electric wire which includes a core wire and an insulating material covering the periphery of the core wire; a terminal fitting electrically connected to the core wire at the end of the insulated electric wire; and an adhesive tube covering the end of the insulating material. The terminal-attached electric wire includes a molding portion formed to cover a region extending from a core wire-connected portion of the terminal fitting which is connected to the core wire to a middle portion in an axial direction of the adhesive tube. The outer peripheral surface of the adhesive tube is adhered to the inner peripheral surface of the molding portion. The inner peripheral surface of the adhesive tube is adhered to the outer peripheral surface of the insulating material.

First claim

1 . A terminal-attached electric wire, comprising:
an insulated electric wire including a core wire and an insulator that covers a periphery of the core wire; a terminal metal fitting electrically connected to the core wire at an end of the insulated electric wire; an adhesive tube that covers an end portion of the insulator; and a mold portion formed to cover a region from a portion of the terminal metal fitting connected to the core wire to an axially intermediate portion of the adhesive tube, wherein the adhesive tube is formed to be a tubular member before being arranged on the end portion of the insulator, the adhesive tube includes an outer circumferential surface that is adhered to an inner circumferential surface of the mold portion, and the adhesive tube includes an inner circumferential surface that is adhered to an outer circumferential surface of the insulator.

2 . The terminal-attached electric wire according to claim 1 , wherein the adhesive tube is single-layered.

3 . The terminal-attached electric wire according to claim 2 , wherein
the outer circumferential surface of the adhesive tube is adhered to the inner circumferential surface of the mold portion by welding, and the inner circumferential surface of the adhesive tube is adhered to the outer circumferential surface of the insulator by welding.

4 . The terminal-attached electric wire according to claim 2 , wherein the adhesive tube has a wall thickness set to be in a range of 100 μm to 1000 μm.

5 . The terminal-attached electric wire according to claim 2 , wherein the adhesive tube is formed from a thermoplastic resin having a cross-linked structure.

6 . The terminal-attached electric wire according to claim 2 , wherein the adhesive tube is a member obtained by shrinking a heat shrinkable tube through which the end portion of the insulator is inserted.

7 . A method for manufacturing a terminal-attached electric wire, the method comprising:
electrically connecting a terminal metal fitting to a core wire at an end of an insulated electric wire including the core wire and an insulator that covers a periphery of the core wire; inserting an end portion of the insulator through a tubular adhesive tube formed from a thermoplastic resin; adhering the adhesive tube to an outer circumferential surface of the end portion of the insulator; and forming a mold portion by performing insert molding using a region from a portion of the terminal metal fitting connected to the core wire to an axially intermediate portion of the adhesive tube as an insert so that the mold portion covers the region, wherein the forming a mold portion includes adhering an outer circumferential surface of the adhesive tube to an inner circumferential surface of the mold portion by welding.

Assignees

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

Inventors

• Hirose Mitsuru
• Fukumoto Koji
• Hashimoto Daisuke
• Nakamura Tetsuya
• Nakashima Kazuo
• Tanaka Shigeyuki
• Fujita Taro
• Nishikawa Shinya

Classifications

• H01R4/70 Primary

  Insulation of connections (end caps H01R4/22) · CPC title

• H01R43/005

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

• H01R11/12

  End pieces terminating in an eye, hook, or fork · CPC title

• H01B13/00

  Apparatus or processes specially adapted for manufacturing conductors or cables · CPC title

• H01R4/72 Primary

  using a heat shrinking insulating sleeve · CPC title