Electrical drive unit
AssigneeDanaher Motion Stockholm AB
InventorsThord Agne Gustaf Nilson, Ulf Bengt Ingemar Karlsson
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Abstract
The present invention relates to an electrical drive unit comprising a circuit board, a plurality of components, attached to a first side of the circuit board, a heat sink, arranged on the first side of the circuit board, a positioning assembly, arranged on a second side of the circuit board opposite the first side of the circuit board. The circuit board comprises a plurality of holes between the first and second sides, where through the positioning assembly has a plurality of protrusions arranged against the plurality of components, such that each component of the plurality of components individually is pressed against the heat sink by the positioning assembly.
Claims12
An electrical drive unit comprising:
- a circuit board,
- a plurality of components, attached to a first side of said circuit board,
- a heat sink, arranged on said first side of said circuit board,
- a positioning assembly, arranged on a second side of said circuit board opposite said first side of said circuit board,
- said positioning assembly comprises a rigid part, a resilient part, and a dielectric spacer sandwiched together, wherein said dielectric spacer includes a plurality of protrusions and said dielectric spacer comprises a projection positioned opposite each protrusion of said plurality of protrusions,
- wherein said circuit board comprises a plurality of holes between said first and second sides, where through said positioning assembly has a plurality of protrusions extending through said plurality of holes and arranged against said plurality of components, such that each component of said plurality of components is individually pressed against said heat sink by said position assembly.
Dependencies are inferred from the claim text.