Acoustical window assembly for vehicle

• US 8,180,065 B2
• Filed: 10/12/2006
• Issued: 05/15/2012
• Est. Priority Date: 10/13/2005
• Status: Active Grant

• Current Assignee: Magna Mirrors of America Incorporated (Magna International Incorporated)
• Original Assignee: Magna Mirrors of America Incorporated (Magna International Incorporated)
• Inventors: Snider, Darin J.
• Primary Examiner(s): Nguyen, Dao H
• Assistant Examiner(s): Nguyen, Tram H
• Application Number:
  US12/088,560
• Publication Number:
  US 20080232609A1
• Time in Patent Office: 2,042 Days
• Field of Search: 381/86, 381/87, 381/306, 381/334, 381/344, 381/345, 381/336, 381/152, 381/190, 381/423, 381/424, 381/425
• US Class Current: 381/86
• CPC Class Codes: B60R 11/0223 of flat type
• CPC Class Codes: B60R 2011/0026 Windows, e.g. windscreen
• CPC Class Codes: H04R 2440/05 Aspects relating to the positioning and way or means of mounting of exciters to resonant bending wave panels
• CPC Class Codes: H04R 2499/13 Acoustic transducers and sound field adaptation in vehicles
• CPC Class Codes: H04R 7/04 Plane diaphragms
• CPC Class Codes: H04R 7/045 using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
• CPC Class Codes: H04R 7/12 Non-planar diaphragms or cones

Abstract

A window assembly for a vehicle includes a window panel (14), an actuating assembly (24) and a seal (22). The frame portion (16) partially surrounds a perimeter of the window panel and leaves a free perimeter portion (14c) of the window panel (14) at least partially free. The actuating assembly (24) is positioned at or near the free perimeter portion (14c) of the window panel (14) and is operated to vibrate the window panel. The seal (22) is disposed along the free perimeter portion to substantially seal the window panel relative to the vehicle panel while allowing movement of the window panel in response to the actuating assembly.

Claims

1. A window assembly for a vehicle, said window assembly comprising:

a frame portion;

a window panel, said frame portion partially surrounding a perimeter of said window panel and leaving a free perimeter portion of said window panel at least partially free;

an actuating assembly, said actuating assembly being positioned at or near said free perimeter portion of said window panel, said actuating assembly being operable to vibrate said window panel; and

a seal along said free perimeter portion to substantially seal said window panel relative to the vehicle while allowing movement of said window panel in response to said actuating assembly.

2. The window assembly of claim 1, wherein said frame portion is fixedly secured to a fixed perimeter portion of said window panel.

3. The window assembly of claim 2, wherein said fixed perimeter portion is substantially opposite from said free perimeter portion.

4. The window assembly of claim 3, wherein said window assembly is configured to allow flexing along other perimeter portions of said window panel between said fixed perimeter portion and said free perimeter portion.

5. The window assembly of claim 1, wherein said window panel comprises a rear window of a vehicle.

6. The window assembly of claim 1, wherein said actuating assembly comprises a piezoelectrical actuator that is operable to vibrate at or near said free perimeter portion of said window panel.

7. The window assembly of claim 6, wherein said piezoelectrical actuator is operable to excite an exciter device that converts the vibration of said piezoelectrical actuator to a desired vibration or movement at said window panel.

8. The window assembly of claim 7, wherein said desired vibration comprises movement of said exciter device toward and away from said window panel to impart an inward movement and an outward movement of said window panel at said free perimeter portion of said window panel.

9. The window assembly of claim 8, wherein said piezoelectrical actuator is oriented to impart movement in a direction generally along said window panel and said exciter device imparts movement in a direction generally normal to said window panel in response to said piezoelectrical actuator.

10. The window assembly of claim 9, wherein said exciter device includes a mounting plate for attaching to the vehicle, a window attaching plate for attaching to said window panel, and an exciter element that imparts movement of said window attaching plate toward and away from said mounting plate in response to said piezoelectric actuator.

11. The window assembly of claim 8, wherein said seal along said free perimeter portion of said window panel substantially seals said window panel at the vehicle during the movement or vibration of said window panel.

12. The window assembly of claim 1 including a limiting element that limits outward movement of said window panel relative to the vehicle frame portion.

13. The window assembly of claim 12, wherein said limiting element is substantially fixedly attached at an interior surface of said window panel and is configured to be movably attached to the vehicle frame portion with a frame engaging portion that limits outward movement of said window panel relative to the vehicle frame portion.