CONNECTING STRUCTURE FOR AN ALUMINUM ELECTRIC CONDUCTOR AND A CONNECTOR

• US 20120295496A1
• Filed: 11/29/2010
• Published: 11/22/2012
• Est. Priority Date: 03/11/2010
• Status: Active Grant

• Current Assignee: Nippon Tanshi Co., Ltd.
• Original Assignee: PL Co., Ltd.
• Inventors: Suzuki, Mitsuru
• Granted Patent: US 8,882,549 B2
• Time in Patent Office: Days
• US Class Current: 439/882
• CPC Class Codes: H01R 4/184 comprising a U-shaped wire-receiving portion
• CPC Class Codes: H01R 4/188 having an uneven wire-receiving surface to improve the contact
• CPC Class Codes: H01R 4/203 having an uneven wire-receiving surface to improve the contact
• CPC Class Codes: H01R 4/2429 mounted in an insulating base
• CPC Class Codes: H01R 4/62 Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors H01R4/68 takes precedence

Abstract

To prevent electric resistance between an electric conductor and a coupling part made of aluminum from becoming larger by stopping cold flow in an aluminum electric conductor, an end section of the aluminum electric conductor is crimped at a crimping section of the coupling part, multiple projections are formed in the crimping section, each of the projections has a truncated quadrangular pyramid shape and also has four inclined planes, the projections are pressed into the surface of the aluminum electric conductor but bases of the projections are not inserted, a distorted region is formed on the surface of the aluminum electric conductor along the inclined plane, thereby forming multiple independent regions, each surrounded by distorted regions, on the surface of the aluminum electric wire.

Claims

1. A connecting structure for connecting an electric conductor made of aluminum to a coupling part;

wherein

a plurality of projections, each having an inclined plane, is formed in the coupling part,

the plurality of projections is pressed into a surface of the electric conductor made of aluminum, and

a plurality of distorted regions is formed on the surface of the electric conductor made of aluminum along the inclined plane.

2. The connecting structure for connecting the electric conductor made of aluminum according to claim 1;

wherein

a plurality of independent regions, each surrounded by the plurality of distorted regions, is formed on the surface of the electric conductor made of aluminum.

3. The connecting structure for connecting the electric conductor made of aluminum according to claim 1;

wherein

a plurality of opposing regions where respective distorted regions oppose one another are formed on the surface of the electric conductor made of aluminum.

4. The connecting structure for connecting the electric conductor made of aluminum according to claim 1;

wherein

an angle of gradient of the inclined plane is 45 to 75 degrees.

5. The connecting structure for connecting the electric conductor made of aluminum according to claim 1;

wherein distortion of each of the distorted regions is 16 to 32%.

6. The connecting structure for connecting the electric conductor made of aluminum according to claim 1;

wherein

the electric conductor made of aluminum is an aluminum electric wire, and distance between the centers of respective neighboring projection sections is 0.25 to 1.25 times the diameter of the aluminum electric wire.

7. A connector used for the connecting structure for the electric conductor made of aluminum according to claim 1;

the connector has a crimping section formed in a main body, a projection component is fixed to the crimping section, and a plurality of projections is formed in the projection component having an inclined plane.

8. The connector according to claim 7, wherein

the projection component is fixed to the crimping section by brazing.

9. The connector according to claim 7, wherein

the projection component is made of copper.

10. A connector used for the connecting structure for connecting the electric conductor made of aluminum according to claim 1;

wherein

a plurality of projections, each having an inclined plane, are formed in a crimping section of a post, and a plurality of projections, each having an inclined plane on the inner surface of an anchor, is formed.

11. The connector according to claim 10, wherein

the post comprises a handle and a crimping section bent into a quadrangular shape.

12. The connector according to claim 10, wherein

the anchor is made by bending a board into an approximately U-shape.

13. The connector according to claim 10, wherein the post is made of copper.

14. The connector according to claim 10, wherein the anchor is made of copper.

15. A connector used for the connecting structure for connecting the electric conductor made of aluminum according to claim 1;

a pressure-welding section having three or more tabular sections is formed in a main body, a groove is formed in each of the tabular sections, and an inclined plane is formed in the groove of each of the tabular sections.

16. The connector according to claim 15, wherein the pressure-welding section is made by bending a board.

17. The connector according to claim 15, wherein the pressure-welding section is made of copper.