Vehicular component assembly with hard coated element

• US 6,454,449 B2
• Filed: 09/25/2001
• Issued: 09/24/2002
• Est. Priority Date: 07/17/1997
• Status: Expired due to Term

• Current Assignee: Donnelly Corporation (Magna International Incorporated)
• Original Assignee: Donnelly Corporation (Magna International Incorporated)
• Inventors: Nestell, David E., Ainsworth, James T.
• Primary Examiner(s): O'Shea, Sandra
• Assistant Examiner(s): Alavi, Ali
• Application Number:
  US09/962,743
• Publication Number:
  US 20020012250A1
• Time in Patent Office: 364 Days
• Field of Search: 362/520, 362/267, 362/549, 362/310, 362/311, 362/293, 362/509, 362/510, 359/513, 428/412
• US Class Current: 362/520
• CPC Class Codes: B29C 2045/14459 injecting seal elements
• CPC Class Codes: B29C 45/14311 using means for bonding the coating to the articles B29C45/14795 takes precedence
• CPC Class Codes: B29L 2011/0016 Lenses
• CPC Class Codes: B29L 2031/265 Packings, Gaskets
• CPC Class Codes: B29L 2031/30 Vehicles, e.g. ships or aircraft, or body parts thereof vanes or blades B29L2031/08, air bags B29L2022/027
• CPC Class Codes: B29L 2031/747 Lightning equipment
• CPC Class Codes: F21S 41/28 Cover glass
• CPC Class Codes: F21S 41/29 Attachment thereof for achieving variable light distribution F21S41/63
• CPC Class Codes: F21S 45/10 Protection of lighting devices cooling of lighting devices F21S45/40; waterproofing of lighting devices F21S45/50
• CPC Class Codes: Y10T 428/31507 Of polycarbonate

Abstract

A vehicle component assembly includes a hard coated polymeric element with a resinous polymeric molded element or gasket integrally molded to a predetermined area thereof. Preferably, the element is a polycarbonate optical lens, such as a headlight lens, which is coated with a protective coating or hard coat which provides abrasion resistance and optionally includes ultraviolet radiation absorbers to protect the resinous polymeric molded element from UV radiation degradation. Adhesion is improved by priming the area of the polycarbonate element which receives the gasket with a primer coating. Preferably, the area to be gasketed is primed with a first adhesion promoting primer followed by a second adhesion promoting primer, wherein the first adhesion promoting primer improves the adhesion of the second primer to the protective coating, while the second primer, in turn, improves the adhesion of the molded element or gasket to the first primer and the hard coated element. The gasket is preferably molded on a peripheral portion of the element which may include grooves or other formed portions for mechanical interlocking the gasket with the polymeric element. Preferably, the gasket is formed from a melt-processible gasket material, such as polyvinyl chloride, thermoplastic urethane, or an ethylene-styrene polymer.

Claims

1. A vehicular lighting assembly suitable for use in a vehicle, said vehicular lighting assembly comprising:

a light source;

a polymeric element including a protective coating on at least a portion of said polymeric element, said light source projecting light through said polymeric element when said light source is powered by a power source; and

a polymeric molded member integrally molded on and bonding to at least a portion of said protective coating.

2. The lighting assembly according to claim 1, further comprising an attachment member extending from said polymeric molded member.

3. The lighting assembly according to claim 2, wherein said polymeric element includes said attachment member.

4. The lighting assembly according to claim 2, wherein said attachment member is at least partially molded with said polymeric molded member.

5. The lighting assembly according to claim 2, wherein said attachment member comprises a fastener.

6. The lighting assembly according to claim 1, wherein said polymeric element comprises a polycarbonate element.

7. The lighting assembly according to claim 6, wherein said polycarbonate element includes a primer coating on at least a portion of said protective coating, said polymeric molded member being integrally molded with said polymeric element on at least a portion of said primer coating.

8. The lighting assembly according to claim 1, further comprising an ultraviolet radiation absorber/stabilizer for protecting said polymeric element from ultraviolet radiation degradation.

9. The lighting assembly according to claim 8, wherein said protective coating comprises said ultraviolet radiation absorber/stabilizer.

10. The lighting assembly according to claim 1, wherein said polymeric molded member comprises a non-melt processible gasket material.

11. The lighting assembly according to claim 1, wherein said polymeric molded member comprises a melt processible gasket material.

12. The lighting assembly according to claim 1, wherein said polymeric molded member comprises a gasket material, said gasket material comprising at least one material chosen from a polyvinyl chloride, a styrene/butadiene/styrene elastomer, a styrene/ethylene/butadiene/styrene elastomer, a copolyester elastomer, a polyether blockamide, a thermoplastic urethane, a styrene butadiene rubber elastomer, an ethylene propylene diene terpolymer elastomer, and an ethylene propylene copolymer elastomer.

13. The lighting assembly according to claim 1, wherein said protective coating comprises one chosen from an organic coating, an inorganic coating, and an organic/inorganic coating.

14. The lighting assembly according to claim 13, wherein said protective coating comprises at least one of an oxide of silicon and an oxide of titanium.

15. The lighting assembly according to claim 1, wherein said polymeric element includes a contoured surface.

16. The lighting assembly according to claim 15, wherein said contoured surface follows a contour of the vehicle.

17. The lighting assembly according to claim 1, wherein said polymeric element is adapted to provide an optical property.

18. A lamp module suitable for use in a vehicle, the vehicle having a body and an opening in the body, said lamp module comprising:

a polymeric light transmitting element having a protective coating on at least a portion of said polymeric element; and

a polymeric member integrally molded on and bonding to at least a portion of said protective coating.

19. The lamp module according to claim 18, wherein said polymeric member comprises a portion adapted to cover a gap between said polymeric light transmitting element and the opening in the body of the vehicle.

20. The lamp module according to claim 18, wherein said polymeric light transmitting element comprises a polycarbonate element.

21. The lamp module according to claim 20, wherein said polycarbonate element is adapted to provide an optical property.

22. The lamp module according to claim 18, wherein said polymeric light transmitting element includes an inner side surface having said protective coating on at least a portion thereof, said polymeric member being injection molded on said protective coating on said portion of said inner side surface.

23. The lamp module according to claim 18, wherein said polymeric light transmitting element includes an inner side surface at a peripheral portion of said polymeric light transmitting element and an edge surface at said peripheral portion;

said polymeric member being injection molded on a portion of said protective coating on at least said inner side surface and said edge surface of said polymeric light transmitting element.

24. The lamp module according to claim 18, wherein said polymeric light transmitting element includes a contoured surface.

25. The lamp module according to claim 24, wherein said contoured surface follows the contour of the body of the vehicle.

26. The lamp module according to claim 24, wherein said polymeric light transmitting element comprises a lens.

27. The lamp module according to claim 18, wherein said polymeric light transmitting element further includes a primer coating, said primer coating being on at least a portion of said protective coating.

28. The lamp module according to claim 27, wherein said polymeric member is integrally molded on and bonded to at least a portion of said primer coating.

29. The lamp module according to claim 18, wherein said polymeric member comprises a non-melt processible gasket material.

30. The lamp module according to claim 18, further comprising a primer coating disposed between said protective coating and said polymeric member.

31. The lamp module according to claim 18, wherein said polymeric member comprises a melt processible gasket material.

32. The lamp module according to claim 18, wherein said polymeric member comprise a gasket material, said gasket material comprising at least one material chosen from a polyvinyl chloride, a styrene/butadiene/styrene elastomer, a styrene/ethylene/butadiene/styrene elastomer, a copolyester elastomer, a polyether blockamide, a thermoplastic urethane, a styrene butadiene rubber elastomer, an ethylene propylene diene terpolymer elastomer, and an ethylene propylene copolymer elastomer.

33. The lamp module according to claim 18, wherein said protective coating comprises one chosen from an organic coating, an inorganic coating, and an organic/inorganic coating.

34. The lamp module according to claim 32, where said protective coating comprises at least one of an oxide of silicon and an oxide of titanium.

35. The lamp module according to claim 18, wherein at least one of said polymeric light transmitting element and said protective coating includes an ultra violet radiation absorber/stabilizer.