Module for measuring tire pressure

• US 6,619,110 B1
• Filed: 05/30/2001
• Issued: 09/16/2003
• Est. Priority Date: 12/11/1998
• Status: Expired due to Term

• Current Assignee: Visteon Global Technologies Incorporated (Visteon Corporation)
• Original Assignee: Johnson Controls Automotive Electronic (Johnson Controls International plc)
• Inventors: Delaporte, Françis
• Primary Examiner(s): Hirshfeld, Andrew H.
• Assistant Examiner(s): FERGUSON SAMRETH, MARISSA LIANA
• Application Number:
  US09/856,917
• Time in Patent Office: 839 Days
• Field of Search: 731/46, 737/06, 737/21, 737/27, 737/56, 731/462, 731/463, 731/468, 128/673, 128/675, 340/447
• US Class Current: 73/146.2
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60C 23/0494 Valve stem attachments positioned inside the tyre chamber

Abstract

The module comprises an air pressure sensor (3) with an air intake (4), a card (5) for supporting a printed circuit, the sensor (3) being mounted on said card, and an anti-contamination filter (6) for protecting the air inlet (4). The filter (6) extends through said card (5) and is in contact with the surface (3) via a contact surface (14, 15) forming a single sealing surface helping to seal the air inlet (4)

Claims

1. A module for measuring tire pressure, comprising an air pressure sensor (3), with an air inlet (4), and an anti-contamination filter (6) for protecting the air inlet (4), characterized in that the sensor (3) is mounted on a card (5) for supporting a printed circuit, the filter (6) extends through said card (5) and a contact surface (14, 15) is provided between the filter (6) and the sensor (3), forming a single sealing surface helping to seal the air inlet (4).

2. The module as claimed in claim 1, in which the filter (6) is attached to the sensor (3) by an impermeable adhesive (20).

3. The module as claimed in claim 1, in which the filter (6) is external to the sensor (3).

4. The module as claimed in claim 1, in which the sensor (3) and part of the filter (6) are embedded in a protective encapsulating resin (16) which acts as a brace, pressing the filter (6) against the sensor (3).

5. The module as claimed in claim 1, in which the filter (6) is made of a hydrophobic material.

6. The module as claimed in claim 1, in which the filter (6) has a convex free surface (17) for air intake.

7. The module as claimed in claim 1, in which the filter (6) is made of a microporous material.

8. The module as claimed in claim 2, in which the filter (6) is external to the sensor (3).

9. The module as claimed in claim 2, in which the sensor (3) and part of the filter (6) are embedded in a protective encapsulating resin (16) which acts as a brace, pressing the filter (6) against the sensor (3).

10. The module as claimed in claim 3, in which the sensor (3) and part of the filter (6) are embedded in a protective encapsulating resin (16) which acts as a brace, pressing the filter (6) against the sensor (3).

11. The module as claimed in claim 8, in which the filter (6) is made of a hydrophobic material.

12. The module as claimed in claim 8, in which the filter (6) has a convex free surface (17) for air intake.

13. The module as claimed in claim 8, in which the filter (6) is made of a microporous material.

14. The module as claimed in claim 9, in which the filter (6) is made of a hydrophobic material.

15. The module as claimed in claim 9, in which the filter (6) has a convex free surface (17) for air intake.

16. The module as claimed in claim 9, in which the filter (6) is made of a microporous material.

17. The module as claimed in claim 10, in which the filter (6) is made of a hydrophobic material.

18. The module as claimed in claim 10, in which the filter (6) has a convex free surface (17) for air intake.

19. The module as claimed in claim 10, in which the filter (6) is made of a microporous material.

20. A module for measuring tire pressure, comprising an air pressure sensor, with an air inlet, and an anti-contamination filter protecting the air inlet, wherein the filter extends through a card carrying electronic components and the sensor is coupled to the card.

21. The module as claimed in claim 20, wherein the filter is fixed to the sensor by an adhesive.

22. The module as claimed in claim 20, wherein a contact surface is provided between the filter and the sensor, and wherein the filter is fixed to the sensor along the contact surface.