GLAZING

• US 20100060077A1
• Filed: 11/07/2007
• Published: 03/11/2010
• Est. Priority Date: 11/15/2006
• Status: Active Grant

• Current Assignee: Pilkington Automotive Deutschland GmbH (Pilkington PLC)
• Original Assignee: Pilkington Automotive Deutschland GmbH (Pilkington PLC)
• Inventors: Baranski, Detlef, Paulus, Peter, Eisenburg, Ingo, Kriegel-Gemmecke, Matthias
• Granted Patent: US 7,960,854 B2
• Time in Patent Office: Days
• US Class Current: 307/10.100
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10376 Laminated safety glass or glazing containing metal wires
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01Q 1/1285 with capacitive feeding through the windscreen
• CPC Class Codes: H04B 5/00 Near-field transmission systems, e.g. inductive or capacitive transmission systems
• CPC Class Codes: H04B 5/0031 for data transfer
• CPC Class Codes: H04B 5/0037 for power transfer
• CPC Class Codes: H04B 5/0093 with one coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/266 One coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

An automotive glazing having a non-galvanic contact for an electrical device associated with the glazing is disclosed. The glazing comprises a first ply and a second ply of transparent glazing material having a ply of interlayer material extending between the plies of glazing material. The glazing also comprises an electric circuit, having a first connector portion, situated adjacent the ply of interlayer material, the first connector portion being configured to form a coupling region such that electrical signals in the circuit are can be coupled between the coupling region and an electrical device placed on the glazing. A second connector portion is included on the surface of the second ply of glazing material situated away from the interlayer material, and connectable to an electrical device. The second connector portion is adapted to receive a ferromagnetic core. This leads to an increased coupling factor (efficiency), making the connection suitable for powering a variety of electrical devices used within automotive vehicles and conventionally mounted on glazings.

Claims

1. An automotive glazing, comprising:

a first ply and a second ply of transparent glazing material;

a ply of interlayer material extending between the plies of glazing material;

an electric circuit, comprising a first connector portion, situated adjacent the ply of interlayer material, the first connector portion being configured to form a coupling region such that electrical signals in the circuit can be coupled between the coupling region and an electrical device placed on the glazing; and

a second connector portion on the surface of the second ply of glazing material situated away from the interlayer material, and connectable to an electrical device;

wherein the second connector portion is adapted to receive a ferromagnetic core.

2. The glazing of claim 1, wherein the coupling has an inductive coupling component.

3. The glazing of claim 1, wherein the first connector portion forms the primary winding of an inductor.

4. The glazing of claim 3, wherein the second connector portion forms the secondary winding of an inductor.

5. The glazing of claim 1, wherein the electric circuit and the first connector portion are formed from an electrically conductive wire.

6. The glazing of claim 5, wherein the first connector portion is embedded in the interlayer material.

7. The glazing of claim 1, wherein the electric circuit and the first connection portion are formed from a region of electrically conductive silver print.

8. The glazing claim 1, wherein the first and second connector portions are in registration with each other.

9. The glazing claim 1, wherein the electrical device is one of a rain sensor, a light sensor, a lighting device, a moisture sensor, a camera, a route guidance receiver or an electrochromic mirror.

10. The glazing claim 1, wherein a control signal is sent to the device, and/or information is sent by the device by radio-frequency or infrared transmission.

11. The glazing of claim 1, wherein control signals are sent to the device and information signals are sent by the device in a different frequency band by coupling between the coupling region and the second connector portion.

12. The glazing of claim 1, wherein control signals are sent to the device and information signals are sent by the device by modulating the input power of the first connector portion and/or modulating a load provided by the device.

13. The glazing claim 1, further comprising a third connector position, situated adjacent the ply of interlayer material and configured to form a coupling region, and a fourth connector portion, situated the surface of the first ply of glazing material away from the interlayer material.

14. The glazing of claim 5, wherein the wire has a thickness in the region of 10-500 μ

m.

15. The glazing of claim 5, wherein the wire has a thickness in the region of 10-150 μ

m.

16. The glazing claim 1, wherein at least the first ply of transparent glazing material is one of annealed, toughened or semi-toughened silicate float glass.

17. The glazing claim 1, wherein the ply of interlayer material is polyvinyl butyral.

18. The glazing claim 1, further comprising an electrical device, mounted on the glazing, and in electrical contact with the second connector portion.

19. An automotive glazing, comprising:

a ply of transparent glazing material;

a ply of polymer material having a first surface placed on one surface of the ply of glazing material;

an electric circuit having a first electrical conductor portion situated between the ply of glazing material and the ply of polymer material;

an electrical device bonded to a second surface of the ply of polymer material, the electrical device comprising a second electrical conductor portion such that signals may be coupled between the first electrical conductor portion and the second electrical conductor portion,

wherein one of the second electrical conductor portion and the electrical device comprises a ferromagnetic core.

20. The glazing of claim 19, wherein the coupling has an inductive coupling component.

21. The glazing of claim 19, wherein the first connector portion forms the primary winding of an inductor.

22. The glazing of claim 21, wherein the second connector portion forms the secondary winding of an inductor.

23. The glazing of claim 19, wherein the electric circuit and the first connector portion are formed from an electrically conductive wire.

24. The glazing of claim 23, wherein the first connector portion is embedded in the ply of polymer material.

25. The glazing of claim 19, wherein the electric circuit and the first connection portion are formed from a region of electrically conductive silver print.

26. The glazing of claim 19, wherein the first and second connector portions are in registration with each other.

27. The glazing of claim 19, wherein the electrical device is one of a rain sensor, a light sensor, a lighting device, a moisture sensor, a camera, a route guidance receiver or an electrochromic mirror.

28. The glazing of claim 19, wherein a control signal is sent to the device, and/or information is sent by the device by radio-frequency or infrared transmission.

29. The glazing of claim 19, wherein control signals are sent to the device and information signals are sent by the device in a different frequency band by coupling between the coupling region and the second connector portion.

30. The glazing of claim 19, wherein control signals are sent to the device and information signals are sent by the device by modulating the input power of the first connector portion and/or modulating a load provided by the device.

31. The glazing of claim 19, further comprising a third connector position, situated adjacent the ply of interlayer material and configured to form a coupling region, and a fourth connector portion, situated the surface of the first ply of glazing material away from the interlayer material.

32. The glazing of claim 24, wherein the wire has a thickness in the region of 10-500 μ

m.

33. The glazing of claim 24, wherein the wire has a thickness in the region of 10-150 μ

m.

34. The glazing of claim 19, wherein the ply of transparent glazing material is one of annealed, toughened or semi-toughened silicate float glass.

35. The glazing of claim 19, wherein the ply of polymer material is self-adhesive.

36. The glazing of claim 19, wherein the ply of polymer material is polyethylene terephthalate.