Heat sink arrangement, electric motor, housing part, and springy clip

• US 7,733,651 B2
• Filed: 07/05/2007
• Issued: 06/08/2010
• Est. Priority Date: 07/06/2006
• Status: Active Grant

• Current Assignee: Dunkermotoren GMBH (Ametek Incorporated)
• Original Assignee: Dunkermotoren GMBH (Ametek Incorporated)
• Inventors: Hogg, Mario, Kaiser, Bernhard
• Primary Examiner(s): DATSKOVSKIY, MICHAIL V
• Application Number:
  US11/773,762
• Publication Number:
  US 20080007916A1
• Time in Patent Office: 1,069 Days
• Field of Search: 361702-712, 361721-724, 165/80.2, 165/80.3, 165/104.33, 165/185, 165/47, 310/43, 310/64, 310/68.C, 310/69, 310/154.14, 310/154.15, 310/154.17, 310/154.27
• US Class Current: 361/704
• CPC Class Codes: H02K 11/33 Drive circuits, e.g. power electronics H02K11/38 takes precedence
• CPC Class Codes: H02K 9/227 Heat sinks

Abstract

The invention relates to a heat sink arrangement with a heat sink element, with a cylindrical interior, in particular a housing of an electric motor or housing part for such, with power electronics integrated into the housing or housing part, with at least one electronics component attached to the heat sink element from inside, in which the heat sink element is a sector of a cylinder adapted to the cylindrical interior of the heat sink arrangement, and that a springy clip is present that presses onto the ends of the sector such that the heat sink element is pressed against the cylindrical interior by spreading, as well as to an electric motor, a housing part and a springy clip.

Claims

1. A heat sink arrangement with a heat sink element, with a cylindrical interior, in particular a housing of an electric motor or housing part for such, with power electronics integrated into the housing or housing part, with at least one electronics component attached to the heat sink element from inside, wherein the heat sink element is a sector of a cylinder adapted to the cylindrical interior of the heat sink arrangement, and a springy clip is present that presses onto the ends of the sector such that the heat sink element is pressed against the cylindrical interior by spreading, and wherein the ends have outwardly bending areas for being guided.

2. The heat sink arrangement according to claim 1, wherein the springy clip builds approximately a cylinder together with the heat sink element, in which the springy dip possesses at least one convexity inwards, that effects the spreading.

3. The heat sink arrangement according to claim 1, wherein the heat sink element carries recesses at its ends for engaging of the ends of the springy clip.

4. The heat sink arrangement according to claim 1, wherein the heat sink element has flat surfaces on its internal side for pressing on electronics components.

5. The heat sink arrangement according to claim 1, wherein the springy clip is less extended lengthwise than is the heat sink element.

6. Electric motor with housing and power electronics integrated into the housing, wherein the housing is constructed as a heat sink arrangement according to claim 1.

7. Housing part for adding to an electric motor, with integrated power electronics for this, wherein the housing part is constructed as a heat sink arrangement according to claim 1.