Apparatus for dry side mounting a crash pressure sensor

• US 9,470,595 B2
• Filed: 08/29/2014
• Issued: 10/18/2016
• Est. Priority Date: 08/29/2014
• Status: Active Grant

• Current Assignee: TRW Automotive USLLC (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: TRW Automotive USLLC (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Ramsay, Mark W.
• Primary Examiner(s): FRISBY, KEITH J
• Application Number:
  US14/473,044
• Publication Number:
  US 20160061682A1
• Time in Patent Office: 781 Days
• Field of Search: 180/274, 280/735, 280/734, 340/436, 701/45
• US Class Current: 1/1
• CPC Class Codes: B60R 2021/01006 Mounting of electrical components in vehicles
• CPC Class Codes: B60R 21/0136 responsive to actual contact with an obstacle , e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle monitoring crash strength in combination with passenger seat detection B60R21/01558
• CPC Class Codes: G01L 19/0069 from the sensor to its support
• CPC Class Codes: G01L 19/142 Multiple part housings
• CPC Class Codes: G01L 19/147 Details about the mounting of the sensor to support or covering means
• CPC Class Codes: H05K 5/0078 specially adapted for acceleration sensors, e.g. crash sensors, airbag sensors

Abstract

A crash pressure sensor assembly includes a housing and an inlet arm extending from the housing, the inlet arm having a through bore. The housing is secured to a dividing panel so that a main portion of the housing is located on a first side of the dividing panel and the inlet arm extends through to a second side of the dividing panel. A pressure sensor is located in the housing so as to be on the first side of the dividing panel. The pressure sensor senses air pressure on the second side of the dividing panel via the through bore of the inlet arm and provides an electrical signal indicative of the sensed pressure. An electrical connector provides an electrical connection to the pressure sensor within the housing.

Claims

1. A crash pressure sensor comprising:

a housing;

an inlet arm extending from the housing, said inlet arm having a through bore;

a securing means for securing said housing to a dividing panel so that a main portion of the housing is located on a first side of the dividing panel and the inlet arm extends through to a second side of the dividing panel;

a pressure sensor located in said housing so as to be on the first side of the dividing panel, said pressure sensor sensing air pressure on the second side of the dividing panel via said through bore of said inlet arm and providing an electrical signal indicative of the sensed pressure;

an electrical connector for providing an electrical connection to said pressure sensor within said housing; and

a mounting substrate, said pressure sensor secured to said mounting substrate, said electrical connector including connector pins integrally formed with said substrate;

wherein said crash pressure sensor further includes a watertight sealing member surrounding said pressure sensor and at least a portion of said mounting substrate to form a watertight seal around said pressure sensor while allowing fluid communications between said pressure sensor and said through bore of said inlet arm.

2. The crash pressure sensor of claim 1 wherein said through bore of said inlet arm is sloped so as to direct water away from said pressure sensor.

3. The crash pressure sensor of claim 1

wherein a distal end of said inlet arm on the second side of the dividing panel is non-orthogonally angled relative to a center axis of the inlet arm so as to aid in water runoff away from said through bore.

4. A crash pressure sensor comprising:

a housing having a receiving portion and an inlet arm extending from the housing, said inlet arm having a through bore extending from a distal end of the inlet arm to the receiving portion;

a securing means for securing said housing to a dividing panel so that the receiving portion of said housing is located on a first side of the dividing panel and the inlet arm extends through to a second side of the dividing panel;

a base sensor unit dimensioned to be received in said receiving portion of said housing;

a pressure sensor located in said base sensor unit for sensing air pressure on the second side of the dividing panel via said through bore of said inlet arm and providing an electrical signal indicative of the sensed pressure; and

said base sensor unit including an electrical connector for providing an electrical connection to said pressure sensor.

5. The crash pressure sensor of claim 4 wherein said securing means is a groove located on said housing, said housing being press fit into a commensurate opening in the dividing panel and held to the dividing panel by the groove.

6. The crash pressure sensor of claim 4 wherein said through bore of said inlet arm is sloped so as to direct water away from said pressure sensor.

7. The crash pressure sensor of claim 4 wherein said base sensor unit further includes a mounting substrate, said pressure sensor secured to said mounting substrate, said electrical connector including connector pins integrally formed with said substrate.

8. The crash pressure sensor of claim 7 wherein said base sensor unit further includes a water tight sealing member surrounding said pressure sensor and at least a portion of said mounting substrate to form a watertight seal between said base sensor unit and said receiving portion of said housing while allowing fluid communications between said sensor unit and said through bore of said inlet arm.

9. The crash pressure sensor of claim 4 wherein the distal end of said inlet arm on the second side of the dividing panel is sloped to aid in water runoff away from an opening of said through bore.

10. The crash pressure sensor of claim 4 wherein said base sensor unit includes releasable locking tabs to releasably hold said base sensor unit to said housing.

11. The crash pressure sensor of claim 4 wherein said connector includes a key to ensure proper direction of any device plugged into said connector.