Method and device for connecting an electrical conductor to an electrical contact part

Patent metadata

Field	Value
Publication number	US-2016372881-A1
Application number	US-201414902049-A
Country	US
Kind code	A1
Filing date	Jun 14, 2014
Priority date	Jul 1, 2013
Publication date	Dec 22, 2016
Grant date	—

Abstract

The present invention relates to a method for connecting an electrical conductor ( 12 ) to an electrical contact part ( 14 ), which has a base part ( 16 ) and deformable flanks ( 18 ) connected thereto, wherein the flanks ( 18 ) are deformed by means of a device, which has a bending punch ( 26 ) and a resting region ( 24 ) for at least one section of the base part ( 16 ) of the electrical contact part ( 14 ), by means of the bending punch ( 26 ) in such a way that said flanks ( 18 ) compress the electrical conductor ( 12 ) with the contact part ( 14 ) in a force-fitting manner, wherein, at least within a lower dead center time period of the bending punch ( 26 ), the contact part ( 14 ), which is arranged at least partially between the resting region ( 24 ) and the bending punch ( 26 ), is acted upon through the resting region ( 24 ) in such a way that at least one component ( 20 ) of the electrical conductor ( 12 ) is cohesively connected to the base part ( 16 ) and/or at least one flank ( 18 ). The present invention also relates to a device designed for the method according to the invention.

First claim

1 . A method for connecting an electrical conductor with an electrical contact part which has a base part and deformable flanks connected thereto, the flanks being deformable by means of a device which has a bending die and a resting region for at least one section of the base part of the electrical contact part, by means of the bending die such that they force-fittingly press the electrical conductor with the contact part,
wherein at least within a lower dead center time period of the bending die the contact part, which is arranged at least partially between the resting region and the bending die, is acted on through the resting region such that at least one component of the electrical conductor is materially connected to the base part and/or at least one flank.

2 . The method according to claim 1 ,
wherein the effect that causes the material connection occurs by way of at least one opening in the resting region.

3 . The method according to claim 2 ,
wherein at least one laser beam passing through the at least one opening in the resting region causes the material connection.

4 . The method according to claim 1 ,
wherein the electrical conductor is acted on through at least one opening in the base part of the contact part such that at least one component of the electrical conductor is materially connected to the base part and/or at least one of the flanks.

5 . The method according to claim 4 ,
wherein the region on which the laser beam acts has a larger surface than the surface of the at least one opening in the base part, the surface perpendicular to the beam direction of the laser being having to be measured when impinging on the region.

6 . The method according to claim 1 ,
wherein the material connection occurs for a contact part having a longitudinal extension and a transverse extension at least in a partial region that is in the center with regard to the longitudinal extension.

7 . A device for connecting an electrical conductor having an electrical contact part, the electrical contact part having a base part and deformable flanks connected thereto, and the device has a plunger with a resting region for at least one section of the base part of the electrical contact part, a bending die which is configured to form the flanks such that they force-fittingly press the electrical conductor with the contact part and at least one laser device,
wherein the at least one laser device is configured to act on the contact part arranged at least partially between the resting region and the bending die through the at least one opening in the resting region such that at least one component of the electrical conductor is materially connected with the base part and/or at least one flank.

8 . The device according to claim 7 ,
wherein the device further comprises a controller that is configured to control the start time of the radiation of the laser beam(s), the duration of the radiation of the laser beam(s), the energy density of the laser beam(s), a variation of the energy density of the laser beam(s) during the welding process and/or the dead center time period of the bending die.

9 . The device according to claim 7 ,
wherein it has at least two plungers which are replaceable according to preselectable criteria.

10 . The device according to claim 7 ,
wherein it has a cleaning device for cleaning the opening and/or the resting region.

Assignees

• Audi Ag
• Schäfer Werkzeug- und Sondermaschinenbau GmbH

Inventors

• Bauer Hans
• Schäfer Markus
• Wolff Hansjörg

Classifications

• B23K26/20

  Bonding (soldering by means of radiant energy B23K1/005) · CPC title

• B23K31/003

  relating to controlling of welding distortion · CPC title

• H01R43/0221

  Laser welding (H01R43/0228 takes precedence) · CPC title

• B23K26/702

  Auxiliary equipment · CPC title

• B23K26/0622

  by shaping pulses · CPC title