Connection device and electric wire connection structure

Patent metadata

Field	Value
Publication number	US-11316287-B2
Application number	US-202017094834-A
Country	US
Kind code	B2
Filing date	Nov 11, 2020
Priority date	Nov 15, 2019
Publication date	Apr 26, 2022
Grant date	Apr 26, 2022

Abstract

A connection device includes a first braided conductor having a tubular shape, and a second braided conductor having a tubular shape. The connection device also includes a tubular member having a first opening end and a second opening end, and the tubular member having conductivity. A first annular member fixed to the first opening end in a state that the first braided conductor is sandwiched coaxially between the first annular member and an outer peripheral surface of the first opening end. A second annular member fixed to the second opening end in a state that the second braided conductor is sandwiched coaxially between the second annular member and an outer peripheral surface of the second opening end. The first braided conductor and the second braided conductor are conductively connected to each other through the tubular member.

First claim

What is claimed is:

1. A connection device comprising:
a first braided conductor having a tubular shape;
a second braided conductor having a tubular shape;
a tubular member having a first opening end and a second opening end, the tubular member having conductivity;
a first annular member configured to be fixed to the first opening end in a state that the first braided conductor is sandwiched coaxially between the first annular member and an outer peripheral surface of the first opening end;
a second annular member configured to be fixed to the second opening end in a state that the second braided conductor is sandwiched coaxially between the second annular member and an outer peripheral surface of the second opening end: and
a first annular electric wire holder provided between a first inner peripheral surface of the tubular member and a first electric wire which is covered with the first braided conductor to hold the first electric wire when the first electric wire is inserted through the tubular member,
wherein the first braided conductor and the second braided conductor are conductively connected to each other through the tubular member; and
wherein the tubular member has a locking hole and the first annular electric wire holder has a lock protrusion that engages with the locking hole.

2. The connection device according to claim 1 , further comprising:
a second annular electric wire holder provided between a second inner peripheral surface of the tubular member and a second electric wire which is covered with the second braided conductor to hold the second electric wire when the second electric wire is inserted through the tubular member; and
an annular water stop ring sandwiched between the first electric wire holder and the second electric wire holder in a tubular axial direction of the tubular member.

3. The connection device according to claim 2 ,
wherein each of the first electric wire holder and the second electric wire holder has a locked portion configured to be engaged with corresponding one of locking holes of the tubular member so as to be fixed to the tubular member.

4. The connection device according to claim 2 ,
wherein the first annular member and the second annular member are fixed to the tubular member by crimping the tubular member; and
wherein the first electric wire holder and the second electric wire holder are fixed to the tubular member by deformation of the tubular member due to the crimping.

5. An electric wire connection structure comprising:
the connection device according to claim 1 ;
the first electric wire having a first conductive core wire and being surrounded by the first braided conductor; and
the second electric wire having a second conductive core wire and being surrounded by the second braided conductor,
wherein the first conductive core wire is inserted through the tubular member, and the first braided conductor is fixed to the first opening end of the tubular member in a state of being coaxially sandwiched between an outer peripheral surface of the first opening end and the first annular member; and
wherein the second conductive core wire is inserted through the tubular member, and the second braided conductor is fixed to the second opening end of the tubular member in a state of being coaxially sandwiched between an outer peripheral surface of the second opening end and the second annular member.

6. The electric wire connection structure according to claim 5 ,
wherein the first conductive core wire and the second conductive core wire are comprised of different conductor materials from one another.

7. The electric wire connection structure according to claim 5 , further comprising:
a first water stop tube having a tubular shape and covering at least one of the first braided conductor and the second braided conductor so as to isolate the at least one of the first braided conductor and the second braided conductor from an outside.

8. The electric wire connection structure according to claim 5 , further comprising:
a second water stop tube having a tubular shape and configured to cover a connection part of the first conductive core wire and the second conductive core wire so as to isolate the connection part from an outside.

9. The electric wire connection structure according to claim 8 , wherein the second water stop tube is covered by the second braided conductor.

10. The electric wire connection structure according to claim 1 , wherein the lock protrusion engages and extends through the locking hole, such that the lock protrusion abuts the first braided conductor.

11. The electric wire connection structure according to claim 1 , wherein the annular water stop ring is formed of rubber;
wherein an inner peripheral lip portion is formed on an outer peripheral surface of the water stop ring and an outer peripheral lip portion is formed on an inner peripheral surface of the water stop ring; and
wherein the outer peripheral lip portion is in close contact with an inner peripheral surface of the tubular member, and the inner peripheral lip portion is in close contact with an outer peripheral surface of the first electric wire inserted into the tubular member.

Assignees

• Yazaki Corp

Inventors

• Tohyama Eiichi
• Oiwa Kazuyuki

Classifications

• H01R9/0518

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

• H01R13/6592

  the conductive member being a shielded cable · CPC title

• H01R43/048

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

• H01R9/0524

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

• H01R11/07 Primary

  the connecting locations being of the same type but different sizes · CPC title