• US 20120275909A1
  • Filed: 07/11/2012
  • Published: 11/01/2012
  • Est. Priority Date: 05/28/2010
  • Status: Active Grant
First Claim
Patent Images

1. A micro cooling fan, comprising:

  • a housing, having an accommodation space, a first inner surface, and a gap, wherein the gap is in communication with the accommodation space, and two opposite side edges of the gap have a groove respectively; and

    a main circuit board, comprising a first circuit board and a second circuit board, wherein the first circuit board has a stator, the second circuit board has a driving circuit, the stator is electrically connected to the driving circuit, the first circuit board is disposed on the first inner surface, and the second circuit board is embedded into the grooves and blocks the gap.

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