Connection structure of external conductor terminal of electric cable

Patent metadata

Field	Value
Publication number	US-9660355-B2
Application number	US-201414534350-A
Country	US
Kind code	B2
Filing date	Nov 6, 2014
Priority date	May 7, 2012
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

A connection structure of an external conductor terminal for connection with an external conductor of an electric cable including the external conductor made up of twined cables enclosing an outer periphery of an insulating coating of one or more internal conductors and a protective coating covering the external conductor, wherein the external conductor terminal has a cylindrical connector portion connected to the external conductor and a terminal portion provided at one end of the connector portion; and the connector portion is fitted around a location on an outer periphery of the insulating coating where the external conductor is laid bare, the twined cables of the external conductor are provided in contact with an outer periphery of the connector portion, a ring member is fitted around outer peripheries of the twined cables and the twined cables are crimped.

First claim

What is claimed is:

1. A connection structure comprising:
an external conductor terminal;
an electric cable connected to the external conductor terminal,
the electric cable comprising one or a plurality of internal conductors connected to an internal conductor terminal, and an external conductor including twined cables provided so as to enclose an outer periphery of an insulating coating of one or a plurality of the internal conductors and a protective coating which covers an outer periphery of the external conductor, wherein
the external conductor terminal further comprises a cylindrical connector portion configured to be connected to the external conductor and a terminal portion provided at one end of the connector portion in its cylinder axis direction and integrally connected to the cylindrical connector portion;
the connector portion of the external conductor terminal is fitted to a location on an outer periphery of the insulating coating, between the twined cables and an unexposed portion of the insulating coating, where the external conductor is laid bare by peeling off the protective coating or an outer periphery of the protective coating at another location contiguous to the location,
the twined cables of the external conductor are provided in contact with an outer periphery of the connector portion, and
a ring member, having an inner diameter larger than a diameter of the electric cable and a length shorter than the location where the external conductor is laid bare, is fitted around outer peripheries of the twined cables, without contacting the protective coating, and the twined cables of the external conductor are crimped to the outer periphery of the connector portion.

2. The connection structure of claim 1 , wherein the terminal portion assumes a shape of a flat plate in a direction that crosses the cylinder axis direction of the connector portion and is stretched from a brim at one end of the connector portion in a direction of diameter expansion.

3. The connection structure of claim 1 , wherein the ring member has a diameter-expanded flange that extends from a brim of an opening at one end in a direction of diameter expansion or, in addition to having the diameter-expanded flange, a diameter-reduced flange that extends from a brim of an opening at the other end in a direction of diameter reduction.

4. The connection structure of claim 3 , wherein the ring member further has a diameter-reduced flange that extends from the brim of the opening at the other end in a direction of diameter reduction.

5. The connection structure of claim 1 , wherein a portion of the external conductor is laid bare from the ring member and the protective cover through a gap between the ring member and the protective coating.

6. The connection structure of claim 5 , wherein the gap extends in an insertion direction of the external conductor into the external conductor terminal.

7. The connection structure of claim 1 , wherein a length of a portion of the external conductor that is laid bare is greater than a total length of the connector portion in an insertion direction of the external conductor into the external conductor terminal.

8. The connection structure of claim 1 , wherein a first end surface of the cylindrical connector portion, in a longitudinal direction of the cylindrical connector portion, is directly connected to and is integral with the terminal portion, and
a second end surface of the cylindrical connector portion, opposing the first end surface, is extended from the terminal portion towards the protective coating.

9. The connection structure of claim 1 , wherein
the connection portion has a flange that extends from an entire circumference of a brim of an opening at one end of the connector portion in a cylinder axis direction, and
the terminal portion extends from the brim of the flange in the direction of diameter expansion.

10. The connection structure of claim 1 , wherein
the connection portion has a flange that extends from an entire circumference of a brim of an opening at one end of the connector portion in a cylinder axis direction, and
the terminal portion has a projection portion that extends from the brim of the flange in the direction of diameter expansion and extends along the lengthwise direction of the electric cable from a leading end of the projection portion.

11. The connection structure of claim 1 , wherein
the connection portion has a flange that extends from an entire circumference of a brim of an opening at one end of the connector portion in a cylinder axis direction, and
the terminal portion has a projection portion that extends from the brim of the flange in the direction of diameter expansion and extends along a direction perpendicular to the lengthwise direction of the electric cable from a leading end of the projection portion.

Assignees

• Yazaki Corp

Inventors

• Kato Hajime
• Tomine Kazuhiro
• Miyajima Takaaki

Classifications

• H01R9/0524 Primary

  Connection to outer conductor by action of a clamping member, e.g. screw fastening means (H01R9/0515 takes precedence) · CPC title

• H01R9/0518

  Connection to outer conductor by crimping or by crimping ferrule · CPC title

• H01R4/20 Primary

  using a crimping sleeve {(H01R4/01 takes precedence)} · CPC title

• H01R13/04

  Pins or blades for co-operation with sockets · CPC title

• H01R13/6591

  Specific features or arrangements of connection of shield to conductive members · CPC title