Pressure transducer

Patent metadata

Field	Value
Publication number	US-2016265998-A1
Application number	US-201615047063-A
Country	US
Kind code	A1
Filing date	Feb 18, 2016
Priority date	Mar 12, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

In an embodiment, a pressure transducer includes a first portion, a second portion, and a third portion. The third portion is positioned in a cavity contained in the second portion. In addition, a seal is placed in the cavity. The first portion and second include provisions for applying a downward pressure on the third portion when the first portion and the second portion are joined. The downward pressure is applied by the third portion to the seal the cavity. The first portion also includes a stop and the second portion also includes a snap member. The snap member includes a prong that contains a first edge and a second edge. The snap member allows movement of the first portion after the first edge of the prong meets the stop and restricts movement of the first portion after the second edge of the prong meets the stop.

First claim

What is claimed is:

1 . A pressure transducer comprising:
a first portion having a first edge, a second edge, and a third edge, the second edge of the first portion being adjacent to the third edge of the first portion, the second edge of the first portion and the third edge of the first portion forming a stop for the first portion; a second portion that is joined with the first portion, the second portion having a cavity and a snap member, the snap member having a prong, the prong having a proximal end at a tip of the snap member and a distal end that is open-ended, the distal end having a first edge and a second edge, the first edge being adjacent to the second edge; a seal contained in the cavity; and a third portion contained in the cavity, the third portion including electronic circuitry for generating a signal associated with a pressure sensed by the pressure transducer, wherein the first edge of the first portion applies a pressure to the third portion to compress the seal, and wherein the snap member (1) allows movement of the first portion after the first edge of the distal end of the prong meets the stop and (2) restricts movement of the first portion after the second edge of the distal end of the prong meets the stop.

2 . The pressure transducer of claim 1 , wherein the first portion includes a connector section to accommodate connecting the pressure transducer to an external device.

3 . The pressure transducer of claim 2 , wherein the first portion includes a keyed section to accommodate joining the first portion with the second portion.

4 . The pressure transducer of claim 3 , wherein the keyed section includes an edge that slopes downward from a point where the connector section meets the keyed section.

5 . The pressure transducer of claim 4 , wherein the edge slopes downward at an angle between 0 and 45 degrees.

6 . The pressure transducer of claim 3 , wherein the keyed section includes a first edge, a second edge, and a third edge, and
wherein the first edge of the keyed section is adjacent to a bottom surface of the keyed section and the third edge of the keyed section, the second edge of the keyed section is adjacent to a top surface of the keyed section and the third edge of the keyed section, and the third edge of the keyed section is adjacent to the first edge of the keyed section and the second edge of the keyed section, and wherein the third edge of the keyed section slopes towards the second edge of the keyed section.

7 . The pressure transducer of the claim 6 , wherein the third edge of the keyed section slopes downwards towards the second edge of the keyed section at an angle between 0 and 90 degrees.

8 . The pressure transducer of claim 1 , wherein the second portion includes an opening for receiving the first portion.

9 . The pressure transducer of claim 8 , wherein the second portion includes an edge that acts to align the first portion with the second portion during a joining of the first portion with the second portion.

10 . The pressure transducer of claim 1 , wherein the first edge of the prong is curved.

Assignees

• Sensata Technologies Inc

Inventors

• Lavado Michael J
• Younes Amin
• Altrui Stephanie
• Pellon Christian
• Janek Timothy

Classifications

• G01L9/0075 Primary

  using a ceramic diaphragm, e.g. alumina, fused quartz, glass · CPC title

• G01L19/0069

  from the sensor to its support · CPC title

• G01L19/142

  Multiple part housings · CPC title

• G01L9/0072 Primary

  using variations in capacitance · CPC title