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Device for sealing an electrical connection

專利號
US10096986B2
公開日期
2018-10-09
申請人
Lisa Draexlmaier GmbH（DE Vilsbiburg）
發(fā)明人
Wolfgang Wimmer
IPC分類
H02G15/04; H01B1/02; H01B3/44; H01B3/46; H01R4/70; H01R13/52; H02G15/013
技術(shù)領(lǐng)域
conductor,adapter,insulation,sealing,contact,electrical,gasket,jacket,pvc,silicone
地域： Vilsbiburg

摘要

A sealing device to seal a connection between an electrical conductor with a PVC or silicone insulation, leaving one end of the conductor exposed, and a contact element electrically connected to the conductor. The contact element is covered with a jacket of a semi-crystalline thermoplastic material, and is exposed in the area of bonding with the conductor. A sleeve-shaped adapter of a semi-crystalline thermoplastic material is inserted and surrounds the conductor with a gasket at an end area of the PVC or silicon insulation. The device also includes an overmold of a thermoplastic or terpolymer elastomer that covers the exposed end of the conductor, the exposed portion of the contact element and at least portions of the adapter and of the jacket of the contact element.

說明書

1 2 3 4 5 6 7 8 9 10 11 12 13 14
CROSS REFERENCE TO RELATED APPLICATIONS

This application is based upon and claims the benefit of prior German Patent Application No. 10 2015 222 582.8, filed on Nov. 16, 2015, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to a device for sealing an electrical connection between an electrical conductor and a contact element with dissimilar insulating materials that do not permit uniform overmolding in order to seal the connection. Connections of this kind can be used in on-board electrical applications in automotive engineering.

BACKGROUND

German Patent Application Nos. DE 102012214161 A1, DE 102014004432 A1 and DE 102014004433 A1 disclose connecting electrical conductors and contact elements, for instance when the contact elements are paired with flat conductors. For an effective electrical connection the insulation is generally removed from both the conductor and the contact element to permit them to be interconnected, for instance by welding.

German Patent Application Nos. DE 102014004431 A1 and DE 102014004430 A1 give extrusion with a self-adhesive polypropylene as a possible solution for sealing the exposed transitional areas between conductor and contact element. In these cases, however, the different flat conductors and contact elements are provided with a uniform insulating material for which a compatible material can be selected for the extrusion.

German Patent Application No. DE 102012217618 A1 discloses another alternative by casting around a flat conductor.

權(quán)利要求

1
What is claimed is:1. A device for sealing an electrical connection between an electrical conductor having PVC or silicone insulation with an exposed end not covered by the insulation, and a contact element electrically connected to the electrical conductor, the contact element being covered by a jacket of semi-crystalline thermoplastic material except in an exposed bonding area, the device comprising:a sleeve-shaped adapter made of semi-crystalline thermoplastic material, the sleeve-shaped adapter comprising a gasket surrounding the electrical conductor in an end area of the insulation; andan overmold made of a thermoplastic or terpolymer elastomer, the overmold directly covering the exposed end of the electrical conductor, the exposed area of the contact element, at least a portion of the adapter, and at least a portion of the jacket of the contact element.2. The device according to claim 1, wherein the adapter is one of:a two-component injection-molded part with the gasket; ora single-component injection-molded part having the gasket secured to the adapter by a cap.3. The device according to claim 2, wherein:the gasket is arranged on an end of the adapter directed towards the insulation of the electrical conductor andthe gasket further comprises a sealing tip having an undercut, the sealing tip being situated on an end of the adapter directed toward the exposed end of the electrical conductor and configured to fit the insulation in the end area of the insulation.4. The device according to claim 2, wherein the gasket comprises at least one of a thermoplastic elastomer or silicone.5. The device according to claim 4, wherein the thermoplastic elastomer is a polyethylene.6. The device according to claim 2, wherein the gasket comprises a sealing ring having a plurality of sealing lips.7. The device according to claim 1, wherein the semi-crystalline thermoplastic material is a polypropylene.8. The device according to claim 1, wherein the contact element is one of a busbar or a flat conductor made of aluminum.9. The device according to claim 8, wherein the contact element is connected to the electrical conductor across a contact plate.10. The device according to claim 8, wherein the contact plate is a tiered contact plate.11. The device according to claim 1, wherein the electrical conductor is a round conductor made of aluminum.12. A device for sealing an electrical connection between an electrical conductor and a contact element electrically connected to the electrical conductor, the electrical conductor comprising insulation and the contact element being covered by a jacket, the device comprising:a sleeve-shaped adapter comprising a semi-crystalline thermoplastic material, the sleeve-shaped adapter further comprising a gasket surrounding the electrical conductor in a first end area of the insulation; andan overmold comprising at least one of a thermoplastic or terpolymer elastomer, the overmold directly covering:an exposed end of the electrical conductor not covered by the insulation;an exposed bonding area of the contact element not covered by the jacket,at least a portion of the adapter, andat least a portion of the jacket of the contact element.13. The device according to claim 12, wherein the adapter is one of:a two-component injection-molded part with the gasket, ora single-component injection-molded part having the gasket secured to the adapter by a cap.14. The device according to claim 13, wherein the gasket is arranged on an end of the adapter directed towards the insulation of the electrical conductor, the gasket further comprising:a sealing tip having an undercut, the sealing tip being situated on an end of the adapter directed toward the exposed end of the electrical conductor and configured to fit the insulation in the first end area of the insulation.15. The device according to claim 13, wherein the gasket comprises at least one of a thermoplastic elastomer or silicone.16. The device according to claim 13, wherein the gasket comprises a sealing ring having a plurality of sealing lips.17. The device according to claim 12, wherein the contact element is one of a busbar or a flat conductor made of aluminum.18. The device according to claim 12, wherein the contact element is connected to the electrical conductor across a contact plate.19. The device according to claim 18, wherein the contact plate is a tiered contact plate.20. The device according to claim 12, wherein the electrical conductor is a round conductor made of aluminum.
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