Electrical connector for a pressure sensor stem

• US 6,722,927 B1
• Filed: 05/28/2003
• Issued: 04/20/2004
• Est. Priority Date: 05/28/2003
• Status: Active Grant

• Current Assignee: Rosemount Incorporated (Emerson Electric Company)
• Original Assignee: Rosemount Incorporated (Emerson Electric Company)
• Inventors: Strei, David, Eriksen, Christopher L., Gravel, James L., Olson, Randall C.
• Primary Examiner(s): Zarroli, Michael C.
• Application Number:
  US10/446,457
• Time in Patent Office: 328 Days
• Field of Search: 439/736, 439/733.1, 439/625, 439/752, 737/56
• US Class Current: 439/736
• CPC Class Codes: G01L 19/0084 to the outside of the housing other details about the housing see G01L19/14
• CPC Class Codes: H01R 12/714 with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
• CPC Class Codes: H01R 13/504 different pieces being moulded, cemented, welded, e.g. ultrasonic, or swaged together
• CPC Class Codes: H01R 13/6595 with separate members fixing the shield to the PCB
• CPC Class Codes: H01R 13/6683 with built-in sensor

Abstract

An electrical connector protects a pressure sensor stem that protrudes from a pressure sensor capsule. The electrical connector includes a baseplate with a central hole and a peripheral wall joined to the baseplate and protruding below the baseplate. The peripheral wall slidingly engages the pressure sensor capsule as the pressure sensor stem passes through the central hole to protrude above the baseplate. A protective wall joined to the baseplate protrudes above the pressure sensor stem and protects the pressure sensor stem. A lead frame in the protective wall provides electrical connections to sensor contact pads on the pressure sensor stem.

Claims

1. An electrical connector for connection to a pressure sensor stem that protrudes from a pressure sensor capsule, the electrical connector comprising:

a baseplate with a central hole therethrough;

a peripheral wall joined to the baseplate and protruding below the baseplate, the peripheral wall being shaped to slidingly engage the pressure sensor capsule as the pressure sensor stem passes through the central hole to protrude above the baseplate;

a protective wall joined to the baseplate to protrude above the pressure sensor stem, the protective wall protecting the pressure sensor stem; and

a lead frame disposed in the protective wall providing electrical connections to sensor contact pads on the pressure sensor stem.

2. The electrical connector of claim 1 wherein the baseplate, the peripheral wall and the protective wall comprise plastic resin.

3. The electrical connector of claim 1 wherein the pressure sensor stem has sensor electrical contact pads and the protective wall comprises a slot aligned with the sensor contact pads.

4. The electrical connector of claim 3 wherein the lead frame is molded in the protective wall adjacent the slot.

5. The electrical connector of claim 4 wherein the lead frame includes bonding pads adapted to bond to bond wires joined to the sensor contact pads.

6. The electrical connector of claim 4 wherein the lead frame is arranged in a dual in-line package (DIP) pattern and includes protruding surface-mount (SM) contacts.

7. The electrical connector of claim 6 further comprising an alignment pin that is joined to the baseplate and protrudes adjacent the protruding surface mount contacts.

8. The electrical connector of claim 1 further comprising an RFI protective shield molded into the protective wall.

9. The electrical connector of claim 1 wherein the peripheral wall includes gripping surfaces that are shaped to grip the pressure sensor capsule.

10. The electrical connector of claim 1 wherein the protective wall forms a potting cavity around the pressure sensor stem, the potting cavity being shaped for filling with a potting compound.

11. The electrical connector of claim 1 further comprising a component mounting surface shaped for mounting an electronic circuit.

12. The electrical connector of claim 1 wherein the baseplate extends peripherally from the protective wall, and the protective wall has external surfaces adapted for insertion in a mounting hole.