Non-contacting sensor multichip module with integral heat-sinks

• US 7,300,203 B2
• Filed: 10/06/2005
• Issued: 11/27/2007
• Est. Priority Date: 10/04/2001
• Status: Active Grant

• Current Assignee: Bourns Incorporated
• Original Assignee: Bourns Incorporated
• Inventors: Tola, Jeffrey
• Primary Examiner(s): VERBITSKY, GAIL KAPLAN
• Application Number:
  US11/244,880
• Publication Number:
  US 20060116846A1
• Time in Patent Office: 782 Days
• Field of Search: 374/208, 374/163, 374/141, 738/665, 361/687
• US Class Current: 374/208
• CPC Class Codes: G01K 1/14 Supports; Fastening devices; Arrangements for mounting thermometers in particular locations

Abstract

A sensor assembly having a housing including a first portion and a second portion. One of the portions of the housing includes a plurality of walls. The walls at least partially define a chamber. The assembly also includes a hinge connected to the first portion and to the second portion. The second portion is pivotable about the hinge from an open position with respect to the first portion to a closed position with respect to the first portion. The assembly also includes a sensor positioned within the chamber and substantially encircled by the plurality of walls. The sensor is partially enclosed by the first portion and second portion when the second portion is in the closed position.

Claims

1. A sensor assembly comprising:

a housing comprising a plurality of walls substantially entirely enclosing an internal chamber, the plurality of walls including a first wall comprising thermally-conductive material defining a heat sink, the first wall having an internal surface and an external surface;

a sensor element located within the chamber; and

an integrated circuit mounted within the housing via a mounting surface, the integrated circuit coupled to the sensor element and the first wall of the housing with substantially the entire mounting surface mounted directly to the first wall, wherein the integrated circuit is in heat-conductive communication with the internal surface of the first wall through substantially the entire mounting surface,

wherein the material of the first wall is responsive to heat generated by the integrated circuit by conducting heat away from the integrated circuit and sensor element and toward the external surface of the first wall to limit heat buildup proximate the integrated circuit, and

wherein the plurality of walls includes a plurality of integrally-formed plastic walls molded to the first wall.

2. The sensor assembly as claimed in claim 1, wherein the first wall comprises metal.

3. The sensor assembly as claimed in claim 1, wherein:

the heat sink is a first heat sink;

the plurality of walls further comprises a second wall opposite the first wall and between which the integrated circuit is located;

the second wall comprises thermally-conductive material defining a second heat sink.

4. The sensor assembly as claimed in claim 1, wherein the plurality of walls further comprises a second wall opposite the first wall, the sensor assembly further comprising an aperture defined in one of the first and second walls and adapted to receive an electrical connector for programming the integrated circuit.

5. The sensor assembly as claimed in claim 1, wherein the first wall is substantially planar.

6. The sensor assembly as claimed in claim 1, wherein the integrated circuit is mounted to the first wall.

7. The sensor assembly as claimed in claim 1, wherein the first wall is shaped to include a fin extending outwardly from the housing.

8. The sensor assembly as claimed in claim 1, wherein the plurality of integrally-formed plastic walls partially defines the internal chamber.

9. The sensor assembly as claimed in claim 3, wherein the plurality of walls includes a plurality of integrally-formed plastic walls located between the first and second walls and molded to at least one of the first and second walls.

10. The sensor assembly as claimed in claim 9, wherein the plurality of integrally-formed plastic walls partially defines the internal chamber.

11. A sensor assembly, comprising:

a sensor element;

a chamber defined by a plurality of walls enclosing the sensor element, the plurality of walls including a first wall of thermally conductive material defining a heat sink and having an internal surface substantially facing the chamber and an external surface substantially facing away from the chamber;

an integrated circuit coupled to the sensor element, the integrated circuit mounted to the internal surface of the first wall via a mounting surface, wherein substantially the entire mounting surface is mounted directly to the internal surface of the first wall to conduct heat from the integrated circuit, away from the sensor element, through substantially the entire mounting surface and the internal surface of the first wall, and to the external surface of the first wall,

wherein the plurality of walls includes a plurality of integrally-formed plastic walls molded to the first wall.

12. The sensor assembly as claimed in claim 11, wherein the first wall comprises metal.

13. The sensor assembly as claimed in claim 11, wherein:

the heat sink is a first heat sink;

the plurality of walls further comprises a second wall opposite the first wall and between which the integrated circuit is located;

the second wall comprises thermally-conductive material defining a second heat sink.

14. The sensor assembly as claimed in claim 11, wherein the plurality of walls further comprises a second wall opposite the first wall, the sensor assembly further comprising an aperture defined in one of the first and second walls and adapted to receive an electrical connector for programming the integrated circuit.

15. The sensor assembly as claimed in claim 11, wherein the first wall is substantially planar.

16. The sensor assembly as claimed in claim 11, wherein the integrated circuit is mounted to the first wall.

17. The sensor assembly as claimed in claim 11, wherein the first wall is shaped to include a fin extending outwardly with respect to the chamber.

18. The sensor assembly as claimed in claim 11, wherein the plurality of integrally-formed plastic walls partially defines the chamber.

19. The sensor assembly as claimed in claim 13, wherein the plurality of walls includes a plurality of integrally-formed plastic walls located between the first and second walls and molded to at least one of the first and second walls.

20. The sensor assembly as claimed in claim 19, wherein the plurality of integrally-formed plastic walls partially defines the chamber.

21. A sensor assembly, comprising:

first and second stacked housings, each of the first and second stacked housings having a plurality of walls comprising;

a first wall;

a second wall opposite the first wall; and

a sensor element located between the first and second walls and enclosed within the plurality of walls; and

an integrated circuit located between the first and second walls of the first housing,

mounted to the first wall of the first housing via a mounting surface, the integrated circuit coupled to the sensor element of the first housing, and enclosed within the plurality of walls of the first housing with substantially the entire mounting surface mounted directly to the first wall of the first housing,

wherein the integrated circuit is in heat-conductive communication with the first wall of

the first housing through substantially the entire mounting surface,

wherein the first wall of the first housing comprises heat-conductive material defining a first heat sink;

wherein the first wall of the first housing is adjacent the second wall of the second housing; and

wherein the plurality of walls of the first housing includes a plurality of integrally-formed plastic walls molded to the first wall of the first housing.

22. The sensor assembly as claimed in claim 21, wherein the first wall of the first housing comprises metal.

23. The sensor assembly as claimed in claim 21, wherein the first and second stacked housings have substantially the same structure.

24. The sensor assembly as claimed in claim 21, wherein the first and second housings are connected by at least one electrical connector extending through an aperture in at least one of the first wall of the first housing and the second wall of the second housing.

25. The sensor assembly as claimed in claim 21, wherein the first wall of each housing is substantially planar.

26. The sensor assembly as claimed in claim 21, wherein the first wall of the first housing is shaped to include a fin extending outwardly from the first housing.

27. A sensor assembly comprising:

a housing comprising a plurality of walls substantially entirely enclosing an internal chamber, the plurality of walls including a first wall comprising thermally-conductive material defining a first heat sink and a second wall opposite the first wall and comprising thermally-conductive material defining a second heat sink, the first wall having an internal surface and an external surface;

a sensor element located within the chamber; and

an integrated circuit located between the first and second walls and mounted within the housing via a mounting surface, the integrated circuit coupled to the sensor element and the first wall of the housing with substantially the entire mounting surface mounted directly to the first wall, wherein the integrated circuit is in heat-conductive communication with the internal surface of the first wall through substantially the entire mounting surface,

wherein the material of the first wall is responsive to heat generated by the integrated circuit by conducting heat away from the integrated circuit and sensor element and toward the external surface of the first wall to limit heat buildup proximate the integrated circuit, and

wherein the plurality of walls includes a plurality of integrally-formed plastic walls located between the first and second walls and molded to at least one of the first and second walls.

28. The sensor assembly as claimed in claim 27, wherein the first wall comprises metal.

29. The sensor assembly as claimed in claim 27, wherein the sensor assembly further comprising an aperture defined in one of the first and second walls and adapted to receive an electrical connector for programming the integrated circuit.

30. The sensor assembly as claimed in claim 27, wherein the first wall is substantially planar.

31. The sensor assembly as claimed in claim 27, wherein the integrated circuit is mounted to the first wall.

32. The sensor assembly as claimed in claim 27, wherein the first wall is shaped to include a fin extending outwardly from the housing.

33. The sensor assembly as claimed in claim 27, wherein the plurality of integrally-formed plastic walls partially defines the internal chamber.

34. The sensor assembly as claimed in claim 27, wherein the plurality of integrally-formed plastic walls partially defines the internal chamber.

35. A sensor assembly, comprising:

a sensor element;

a chamber defined by a plurality of walls enclosing the sensor element, the plurality of walls including a first wall of thermally conductive material defining a first heat sink, a second wall opposite the first wall and comprising thermally-conductive material defining a second heat sink, the first wall having an internal surface substantially facing the chamber and an external surface substantially facing away from the chamber;

an integrated circuit located between the first and second walls and coupled to the sensor element, the integrated circuit mounted to the internal surface of the first wall via a mounting surface, wherein substantially the entire mounting surface is mounted directly to the internal surface of the first wall to conduct heat from the integrated circuit, away from the sensor element, through substantially the entire mounting surface and the internal surface of the first wall, and to the external surface of the first wall,

wherein the plurality of walls includes a plurality of integrally-formed plastic walls located between the first and second walls and molded to at least one of the first and second walls.

36. The sensor assembly as claimed in claim 35, wherein the first wall comprises metal.

37. The sensor assembly as claimed in claim 35, wherein the sensor assembly further comprising an aperture defined in one of the first and second walls and adapted to receive an electrical connector for programming the integrated circuit.

38. The sensor assembly as claimed in claim 35, wherein the first wall is substantially planar.

39. The sensor assembly as claimed in claim 35, wherein the integrated circuit is mounted to the first wall.

40. The sensor assembly as claimed in claim 35, wherein the first wall is shaped to include a fin extending outwardly with respect to the chamber.

41. The sensor assembly as claimed in claim 35, wherein the plurality of integrally-formed plastic walls partially defines the chamber.