WO2017064570A2

WO2017064570A2 - Expansion compensated on-glass connection element

Info

Publication number: WO2017064570A2
Application number: PCT/IB2016/001964
Authority: WO
Inventors: Thomas Reul
Original assignee: Fractal Technologies
Priority date: 2015-10-10
Filing date: 2016-10-10
Publication date: 2017-04-20
Also published as: WO2017064570A3; DE202015007100U1; CN209632341U; WO2017053940A1

Abstract

An expansion-compensated electrical glass solder connection element which, due to its special design, can be soldered onto glass. The connection element mainly compensates the mechanical tensions which occur at the interface between the connection element and the glass by means of an appropriate geometry, with simultaneously high electrical conductivity.

Description

EXPANSION COMPENSATED ON-GLASS CONNECTION ELEMENT

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of priority under Article 8 of the Patent Cooperation Treaty to German Utility Model Application No. 20 2015 007 100.7, having a filing date of October 10, 2015, the entire disclosure of which is hereby incorporated herein by reference.

DESCRIPTION

The invention comprises of an expansion-compensated electrical glass solder connection element which can be soldered or bonded to suitable contact surfaces of windowpanes, glass panels or composite windowpanes.

The special feature of this expansion-compensated electrical glass solder connection element is that, in contrast to the connections currently in use, it has the advantage of reducing the mechanical tensions incurred at the interfaces between the connection element and the glass which are caused by the different thermal expansion coefficients of the materials used, with simultaneously high electrical conductivity. This is achieved by means of a special geometry which enables the thermally-related expansions to be compensated in one, two or three spatial directions. For this purpose, the connection element is provided with appropriate slots.

Conventional electrical glass solder connection elements comprise either of copper or brass materials and feature a high to extremely-high electrical conductivity corresponding to the material, but also a relatively high thermal expansion coefficient compared to glass, which then causes increased mechanical tension at the interface between the connection element and the glass.

Other conventional electrical glass solder connection elements, on the other hand, comprise of a combination of steel and copper materials or steel and brass materials (in which the steel section preferably contacts the glass as a bridge due to the lower thermal expansion coefficient compared to copper or brass) or are completely manufactured from steel. The current is conducted to the bridge via a flat plug contact, normally a reed, either by means of a flexible braid or a wire. In this process, especially low-expansion steels are used and are combined with a multitude of solder alloys, but they have the major disadvantage inherent in steels of multiple increases in the specific electrical resistance value (a factor of 6 to 40 and more) compared to copper or brass.

Typically, the expansion-compensated electrical glass solder connection elements can be designed in two versions.

Version 1 consists of a bridge and an electrically functional element; in the simplest case, a conductor with a plug contact which is attached to this bridge. Version 2 consists of a bridge and an electrically functional element; in the simplest case, a conductor and a screw contact.

Key: Expansion-compensated electrical glass solder connection element, schematic

1 - Soldering foot

2 - Connection area

3 - Conductive material

4 - Optional electrical function element (e.g. coil, filter, circuit with circuit board) Key: Version 1 expansion-compensated glass solder connection element

1 - Soldering foot

2 - Connection area

3 - Conductive material

4 - Optional electrical function element (e.g. coil, filter, circuit with circuit board) 5 - Conductor (wire, braid or strip)

6 - Optional electrical function element (e.g. coil, filter, circuit with circuit board)

7 - Plug connector

Key: Version 2 expansion-compensated glass solder connection element

1 - Soldering foot

2 - Connection area

3 - Conductive material

7 - Screw connection

Claims

WE CLAIM:

1. An expansion-compensated electrical glass solder connection element which, due to its special design, can be soldered onto glass, characterised in that the connection element mainly compensates the mechanical tensions which occur at the interface between the connection element and the glass by means of an appropriate geometry, with

simultaneously high electrical conductivity.

2. The expansion-compensated electrical glass solder connection element according to claim 1, characterised in that the connection element features an appropriate geometry between the surfaces contacting the glass which mainly compensates for the expansion of the preferably copper element between the surfaces contacting the glass.

3. The expansion-compensated electrical glass solder connection element according to claim 1, characterised in that the connection element features an appropriate geometry between the surfaces contacting the glass which mainly compensates for the expansion of the preferably brass element between the surfaces contacting the glass.

4. The expansion-compensated electrical glass solder connection element according to claim 1, characterised in that the connection element features an appropriate geometry between the surfaces contacting the glass which mainly compensates for the expansion of the preferably aluminium element between the surfaces contacting the glass.

5. The expansion-compensated electrical glass solder connection element according to claim 1, characterised in that the connection element features an appropriate geometry between the surfaces contacting the glass which mainly compensates for the expansion of the preferably magnesium element between the surfaces contacting the glass.

6. The expansion-compensated electrical glass solder connection element according to claim 1, characterised in that the connection element features an appropriate geometry between the surfaces contacting the glass which mainly compensates for the expansion of the preferably polymer element between the surfaces contacting the glass.

7. The expansion-compensated electrical glass solder connection element according to claim 1, characterised in that the connection element features an appropriate geometry between the surfaces contacting the glass which is able to compensate for the expansion of the preferably conductive material elements in one axial direction.

8. The expansion-compensated electrical glass solder connection element according to claim 1, characterised in that the connection element features an appropriate geometry between the surfaces contacting the glass which is able to compensate for the expansion of the preferred element in two axial directions.

9. The expansion-compensated electrical glass solder connection element according to claim 1, characterised in that the connection element features an appropriate geometry between the surfaces contacting the glass which is able to compensate for the expansion of the element in three axial directions.

10. The expansion-compensated electrical glass solder connection element according to claim 1, characterised in that the connection element can be combined with ternary solder alloys.

11. The expansion-compensated electrical glass solder connection element according to claim 1, characterised in that the connection element can be combined with quaternary solder alloys.

12. The expansion-compensated electrical glass solder connection element according to claim 1, characterised in that the connection element can be combined with electrically conductive thermoplastic plastics.

13. The expansion-compensated electrical glass solder connection element according to claim 1, characterised in that the connection element can be combined with binary solder alloys.