Housing for a control device having a printed circuit board with an electrically and thermally conducting lining

• US 5,418,685 A
• Filed: 10/14/1993
• Issued: 05/23/1995
• Est. Priority Date: 02/21/1992
• Status: Expired due to Term

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Jessberger, Thomas, Karr, Dieter, Harsch, Markus, Weber, Bernd, Jares, Peter, Hussmann, Dieter, Neuhaus, Dieter, Schupp, Karl
• Primary Examiner(s): Tolin, Gerald P.
• Application Number:
  US08/133,178
• Time in Patent Office: 586 Days
• Field of Search: 174/35 R, 174/35 GC, 174/51, 174/252, 165/80.3, 165/185, 257/708-710, 257/712, 257/713, 257/723, 257/724, 361/704, 361/705, 361/707, 361/712, 361/717-719, 361/720, 361/736, 361/752, 361/753, 361/816, 361/818
• US Class Current: 361/719
• CPC Class Codes: H05K 1/0209 External configuration of printed circuit board adapted for heat dissipation, e.g. lay-out of conductors, coatings
• CPC Class Codes: H05K 2201/09354 Ground conductor along edge of main surface edge contacts H05K3/403
• CPC Class Codes: H05K 2201/09781 Dummy conductors, i.e. not used for normal transport of current; Dummy electrodes of components
• CPC Class Codes: H05K 2201/10166 Transistor
• CPC Class Codes: H05K 2201/10446 Mounted on an edge soldering edge mounted components H05K3/3405; edge terminals H05K2201/1034
• CPC Class Codes: H05K 2201/10553 Component over metal, i.e. metal plate in between bottom of component and surface of PCB
• CPC Class Codes: H05K 7/20518 Unevenly distributed heat load, e.g. different sectors at different temperatures, localised cooling, hot spots
• CPC Class Codes: H05K 7/20854 Heat transfer by conduction from internal heat source to heat radiating structure H05K7/20863 takes precedence
• CPC Class Codes: H05K 7/209 Heat transfer by conduction from internal heat source to heat radiating structure H05K7/20909 takes precedence
• CPC Class Codes: H05K 9/0049 being metallic containers

Abstract

In order to provide protection against disruptive radiation and achieve good conduction of heat, a housing for control devices which has multiple parts is provided with a printed circuit board carrying power components and control elements with a peripherally extending lining of electrically and thermally conducting material. The printed circuit board is clamped between the housing halves in the region of the linings. The power components are contacted by the lining so as to be thermally conducting, while control elements which give off intensive disruptive radiation or are sensitive to such radiation are enclosed within connecting pieces projecting from the walls of the housing parts.

Claims

1. A housing for control devices, comprising a plurality of housing parts including at least one base part and at least one cover part composed of electrically conducting and thermally conducting materials;

at least one carrier member arranged inside said housing and carrying electrical power components and control elements;

at least one plug element secured in said housing and connecting to said components electrically from outside, said carrier member being a printed circuit board which is clamped at at least one portion of its outer region between portions of said base part and said cover part, said printed circuit board having a lining of electrically conducting and thermally conducting material, said lining being clamped between said housing parts and extending to an adjoining region on said board and is connected with the components so as to promote thermal conduction thereform, said housing parts having a dividing plane therebetween and a peripheral wall arranged substantially perpendicularly to said dividing plane, said housing parts having a flange region projecting inwardly from said peripheral wall, said flange region being at least partially peripheral and comprising an end face of one of said housing parts which contacts said printed circuit board and said lining and forms cross pieces with niches enclosing the components on said printed circuit board.

2. A housing as defined in claim 1, wherein said housing parts have cross pieces which define fields on said printed circuit board.

3. A housing as defined in claim 1, wherein said flange region is comprised of inwardly extending parts of said housing wall, said housing walls having other outwardly bent parts in an outer flange region in said one housing part, said printed circuit board with said lining being clamped between said outer flange region and another of said housing parts.

4. A housing for control devices, comprising a plurality of housing parts including at least one base part and at least one cover part composed of electrically conducting and thermally conducting materials;

at least one carrier member arranged inside said housing and carrying electrical power components and control elements;

at least one plug element secured in said housing and connecting to said components electrically from outside, said carrier member being a printed circuit board which is clamped at at least one portion of its outer region between portions of said base part and said cover part, said printed circuit board having a lining of electrically conducting and thermally conducting material, said lining being clamped between said housing parts and extending to an adjoining region on said board and is connected with the components so as to promote thermal conduction hereform, said housing parts having cross pieces provided with recesses at end faces which contact said printed circuit board for thermal conductor paths.

5. A housing as defined in claim 4, wherein said connecting pieces includes a region inside which the electrical components are located, said region protecting the electrical components from electrical and electromagnetic radiation and preventing them from radiating electrical or electromagnetic energy.

6. A housing for control devices, comprising a plurality of housing parts including at least one base part and at least one cover part composed of electrically conducting and thermally conducting materials;

at least one carried member arranged inside said housing and carrying electrical power components and control elements;

at least one plug element secured in said housing and connecting to said components electrically from outside, said carrier member being a printed circuit board which is clamped at at least one portion of its outer region between portions of said base part and said cover part, said printed circuit board having a lining of electrically conducting and thermally conducting material, said lining being clamped between said housing parts and extending to an adjoining region on said board and is connected with the components so as to promote thermal conduction therefrom.

7. A housing as defined in claim 6, wherein said housing parts each have a flange;

and further comprising means securely connecting said housing parts in a region including said flanges.

8. A housing as defined in claim 7, wherein said connecting means is clamping means.

9. A housing as defined in claim 7, wherein said connecting means is screwing means.

10. A housing as defined in claim 6, wherein one of said housing parts has a flange having an edge which is raised in direction of another of said housing parts and encloses end sides of said printed circuit board and said another housing part so as to overlap them.

11. A housing as defined in claim 6, wherein said printed circuit board has two sides, said lining including lining portions provided on said two sides of said printed circuit board and conducting connection parts connecting said lining portions with one another and extending through said printed circuit board.

12. A housing as defined in claim 6, wherein said printed circuit board has a recess which accommodate said lining and has a depth corresponding to a height of said lining.

13. A housing as defined in claim 12, wherein said lining is a copper layer inside said recess.

14. A housing as defined in claim 11, wherein said printed circuit board has bore holes receiving and guiding said connection parts.

15. A housing as defined in claim 14, wherein said lining includes said bore holes and makes contact from one side to the other side of said printed circuit board through said bore holes.

16. A housing as defined in claim 6, wherein said lining is composed of copper.

17. A housing as defined in claim 6, wherein said printed circuit board has edges, said lining covers said edges of said printed circuit board circumferentially.

18. A housing as defined in claim 6;

and further comprising cooling vanes connecting said components with said printed circuit board.

19. A housing as defined in claim 18, wherein said cooling vanes are soldered with said lining.

20. A housing as defined in claim 6, wherein said housing parts have a dividing plane and a peripheral wall extending perpendicularly to said dividing plane, said housing parts having cross pieces projecting from said peripheral wall so as to continue in an opposite one of said housing parts to be aligned and end in a plane of an end face of said housing parts, said printed circuit board being clamped between said cross pieces, said lining extending at least along a part of an end face of said cross pieces.

21. A housing as defined in claim 6, wherein said housing parts have a dividing plane therebetween and an outer wall extending parallel to said dividing plane, said housing parts having cross pieces projecting from said outer wall and continuing in an opposite one of said housing parts so as to align and end in a plane of an end face of said housing parts, said printed circuit board being clamped between said cross pieces, said lining extending at least along a part of an end face of said cross pieces.

22. A housing as defined in claim 6, wherein said housing parts have cross pieces which define fields on said printed circuit board.

23. A housing as defined in claim 21, wherein said housing parts have cross pieces which define fields on said printed circuit board.

24. A housing as defined in claim 6, wherein said housing parts have a peripheral wall and cross pieces with niches enclosing the components.

25. A housing as defined in claim 6;

and further comprising connecting pieces having end faces and including one connecting piece projecting from a housing wall of one of said housing parts and another connecting piece projecting from a housing wall from another housing part and being aligned with said one connecting piece, said printed circuit board being clamped between said end faces of said connecting pieces.

26. A housing as defined in claim 25, wherein said printed circuit board has a location where it is clamped between said connecting pieces and is provided at said location at both sides with a through-contacted lining which is at least partially conductive.

27. A housing as defined in claim 26, wherein said through-contacted lining on both board sides extends to an outer periphery of said printed circuit board.

28. A housing as defined in claim 6;

and further comprising means connecting said housing with a ground.