Connection cap and cable connection method utilizing same

• US 20050164547A1
• Filed: 12/01/2004
• Published: 07/28/2005
• Est. Priority Date: 01/26/2004
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Sakaguchi, Tadahisa, Onuma, Masanori
• Granted Patent: US 7,074,077 B2
• Time in Patent Office: Days
• US Class Current: 439/521
• CPC Class Codes: H01R 4/70 Insulation of connections end caps H01R4/22

Abstract

The connection cap includes a rear end wall positioned at a rear end of the connection cap for confining a sealing uncured resin, an opening positioned at a forward end of the connection cap for inserting a jointing portion of core wires of electrical cables, and a cylindrical wall extending from the opening to the rear end wall. The cylindrical wall has an inner surface formed with a plurality of ribs for positioning the jointing portion in the connection cap. The ribs are distributed in a circumferential direction to uniformly support the electrical cable. The uncured resin intrudes clearances each defined between adjacent two of the ribs. The inner surfaces of ribs define an inscribed circle having a diameter substantially the same as an outer diameter of the conductive sleeve. Advantageously, the ribs each have a forward end portion formed with a tapered surface gradually rising toward the rear end of connection cap.

Claims

1. A connection cap comprising:

a rear end wall positioned at a rear end of the connection cap for confining a sealing uncured resin,

an opening positioned at a forward end of the connection cap for inserting a jointing portion of core wires of sheathed cables, and

a cylindrical wall extending from the opening to the rear end wall,

wherein the cylindrical wall has an inner surface formed with a plurality of ribs circumferentially uniformly disposed for positioning the jointing portion in the connection cap.

2. The connection cap recited in claim 1 wherein the ribs are extended parallel to an axial direction of the connection cap.

3. The connection cap recited in claim 1 wherein the ribs each have a forward end portion formed with a tapered surface gradually rising toward the rear end of connection cap.

4. The connection cap recited in claim 1 wherein the cylindrical wall has an inner surface formed with a shoulder abutting against an end of the jointing portion of the core wires to axially position the jointing portion in the connection cap.

5. The connection cap recited in claim 1 wherein the cylindrical wall has a reduced inner diameter portion for receiving a leading end part of the jointing portion of the core wires.

6. The connection cap recited in claim 1 wherein the ribs define an inscribed circle having a diameter substantially the same as or slightly smaller than an outer diameter of the jointing portion.

7. A cable connection method utilizing the connection cap recited in claim 1 comprising the steps of:

defining the jointing portion by press-contacting the wire cores with a sleeve surrounding the wire cores by means of a rotary swaging unit, and

inserting the jointing portion into the connection cap from the opening.