ELECTRICAL CONTROL DEVICE

• US 20160128208A1
• Filed: 05/24/2014
• Published: 05/05/2016
• Est. Priority Date: 06/28/2013
• Status: Abandoned Application

• Current Assignee: Wabco GmbH (Wabco Holdings Incorporated)
• Original Assignee: Wabco GmbH (Wabco Holdings Incorporated)
• Inventors: Bolik, Thomas, Kortlang, Tobias
• Application Number:
  US14/897,519
• Publication Number:
  US 20160128208A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H05K 5/0008 assembled by screws
• CPC Class Codes: H05K 5/0013 assembled by resilient members
• CPC Class Codes: H05K 5/0052 characterized by joining features of the housing parts
• CPC Class Codes: H05K 5/0069 having connector relating features for connecting the connector pins with the PCB or for mounting the connector body with the housing
• CPC Class Codes: H05K 5/061 sealed by a gasket held between a removable cover and a body, e.g. O-ring, packing
• CPC Class Codes: H05K 7/20436 Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
• CPC Class Codes: H05K 7/205 Heat-dissipating body thermally connected to heat generating element via thermal paths through printed circuit board [PCB] details of PCBs relating to heat transfer H05K1/0201

Abstract

An electrical control device (10, 70, 90) including a housing (12) for accommodating a printed circuit board (14), on which an electronic circuit (18) is arranged, wherein the printed circuit board (14) rests at least partially on a metallic heat sink (24) which forms a lower housing part (20), and is covered completely by an upper housing part (22), and in which electrical control device (10, 70, 90) the two housing parts (20, 22) are joined by a frictionally locking connection and are sealed with respect to one another by a circumferential sealing element (44). As a result, the housing (12) has a simple structural and vibration-resistant design which permits cost-effective large-scale fabrication.

Claims

1. An electrical control device (10, 70, 90) comprising

a housing (12) for accommodating a printed circuit board (14), on which an electronic circuit (18) is arranged,

wherein the printed circuit board (14) rests at least partially on a metallic heat sink (24) which forms a lower housing part (20), and is covered completely by an upper housing part (22), and

wherein the two housing parts (20, 22) are joined by a frictionally locking connection and are sealed with respect to one another by a circumferential sealing element (44), wherein the upper housing part (22) is formed with a plastic material, and in that the upper housing part (22) has a plug-type connection (46) which is formed integrally thereon and has at least two press-in contacts (48, 50) for electrically connecting the printed circuit board (14) to an external electrical circuit.

2. The electrical control device (10, 70, 90) as claimed in patent claim 1, wherein said electrical control device (10, 70, 90) is embodied in such a way that as a result of the joining of the two housing parts (20, 22), the electrical formation of contact of the printed circuit board (14) occurs automatically by the at least two press-in contacts (48, 50).

3. The electrical control device (10, 70, 90) as claimed in claim 1, wherein an intermediate layer (28) for improving the transfer of heat is arranged at least partially between an underside (26) of the printed circuit board (14) and the lower housing part (20).

4. The electrical control device (10, 70, 90) as claimed in claim 1, wherein a projection (34), which projects into an interior space of the housing (12), is formed at least in certain sections near a circumferential housing edge (32) which is formed on the upper housing part (22), and wherein the projection (34) rests after the joining of the two housing parts (20, 22) against a side of the printed circuit board (14) facing the upper housing part (22).

5. The electrical control device (10, 70, 90) as claimed in claim 1, wherein the lower housing part (20) has a cutout (56, 58) near the at least two press-in contacts (48, 50).

6. The electrical control device (10, 70, 90) as claimed in claim 1, wherein the housing edge (32) of the upper housing part (22) has a circumferential groove (40) with an approximately V-shaped cross-sectional geometry.

7. The electrical control device (10, 70, 90) as claimed in claim 6, wherein the lower housing part (20) has at the housing edge (32) a circumferential projection (42) with an approximately V-shaped cross-sectional geometry which extends in the direction of the groove (40).

8. The electrical control device (10, 70, 90) as claimed in claim 1, wherein the lower housing part (20) has a trough-shaped recess (30) of low depth for accommodating the printed circuit board (14) and securing it positionally with respect to forces acting perpendicularly with respect to its surface normal, and wherein the depth of this recess (30) corresponds at maximum to a thickness of the printed circuit board (14).

9. The electrical control device (10, 70, 90) as claimed in claim 7, wherein the sealing element (44) is arranged between the groove (40) of the upper housing part (22) and the projection (42) of the lower housing part (20).

10. The electrical control device (10, 70, 90) as claimed in claim 1, wherein the sealing element (44) is formed with an elastic plastic material with an approximately V-shaped cross-sectional geometry.

11. The electrical control device (10, 70, 90) as claimed in claim 1, wherein the press-in contacts (48, 50) are embodied in a pin shape and each have an end tip (52, 54) which can be pressed into the printed circuit board (14).

12. The electrical control device (10) as claimed in claim 1, wherein the frictionally locking connection is formed by at least one snap-in element (36) which is formed integrally on the housing edge (32) of the upper housing part (22) and which can be latched to the lower housing part (20).

13. The electrical control device (70) as claimed in claim 1, wherein the frictionally locking connection is formed by at least one attachment element (72), such as a screw (74) or a rivet.

14. The electrical control device (90) as claimed in claim 1, wherein the printed circuit board (14) is connected to the lower housing part (20) by at least one attachment element (92) such as a screw (94) or a rivet.