Patent ID: 7411327
Filing Date: 2008-08-12
Classification: F04D,H01L,H02K

Abstract:
1. A fan unit comprising: a motor having a revolving shaft; a motor supporting member located in a more forward direction than said revolving shaft, for supporting said motor, when one of two axial directions in which said revolving shaft extends is defined as the forward direction and the other of the two axial directions is defined as a backward direction; an impeller having a plurality of blades and mounted on said revolving shaft, for rotation, said impeller being located in the more backward direction than said motor supporting member; a fan casing with said impeller rotatably received therein; and a plurality of lead wires connected to said motor; wherein a plurality of lead wire engaging sections are provided at an outer wall of said fan casing, said lead wire engaging sections being arranged at predetermined intervals along a contour of the outer wall when said fan casing is viewed from a predetermined position located in the forward direction; said lead wire engaging sections are so configured to engage a part of said lead wires respectively and are used so as to prevent one or more of said lead wires from coming out of said fan casing during conveyance each of said lead wire engaging sections has: each of said lead wire engaging sections is configured to keep engaging the part of said lead wires when a force for pulling out the part of said lead wires through the lead-wire-inserting opening is not intentionally applied to said lead wires inserted through the lead-wire-inserting opening wherein said fan unit further comprises a plurality of webs arranged at predetermined intervals in the peripheral direction of said revolving shaft, for coupling said motor supporting member to said fan casing; said lead wires are arranged along one of said webs; said fan casing is located in the more backward direction than said motor supporting member; said outer wall section of said fan casing includes an outer peripheral surface extending in both of the axial direction and the peripheral direction surrounding a periphery of said revolving shaft; all of said lead wire engaging sections are provided on said outer peripheral surface of said outer wall section at the intervals in the peripheral direction; said lead wire engaging sections include a first lead wire engaging section, located adjacent to said one of said webs, into which said lead wires are to be first inserted, a last lead wire engaging section, arranged next to said first lead wire engaging section, into which said lead wires are to be last inserted, and one or more intermediate lead wire engaging sections arranged between said first lead wire engaging section and said last lead wire engaging section; the lead-wire-inserting opening of said first lead wire engaging section is open toward the backward direction, and the pair of lead-wire-extending openings are open toward both peripheral directions of said outer wall section; and wherein between the respective two adjacent lead wire engaging sections of said lead wire engaging sections including said first and last lead wire engaging sections and said one or more intermediate lead wire engaging section, one or more lead wire supporting section in contact with a part of said lead wires, for supporting the part of said lead wires is provided, so that said lead wires do not move in the backward direction.