Disk motor

Details Disk motor Disk motor

H - Electricity

02

K

H02K 3/28 (2006.01) H02K 1/16 (2006.01) H02K 1/27 (2006.01) H02K 3/12 (2006.01) H02K 21/24 (2006.01) H02K 29/00 (2006.01)

Patent

CA 2367333

A discoidal brushless DC motor having a stator (507) carrying windings (503) arranged in slots which radiate out from the centre of the stator to the periphery. The depth of each slot increases towards the centre of the stator. The slot, therefore, is wider (from side to side) and shallower towards the periphery of the stator, and narrower (from side to side) and deeper towards the centre of the stator. This arrangement ensures that the windings are contained below the surface (504) of the stator (507). The magnetic circuit includes a backing of a ferromagnetic material (509). This ferromagnetic material (509) can be a watch spring core made from a long strip of soft iron tape.

L'invention concerne un moteur c.c. en disque sans balais qui comporte un stator (507) sur lequel reposent des bobinages (503) disposés dans des fentes qui vont depuis le centre du stator à la périphérie. La profondeur de chaque fente augmente vers le centre du stator; ainsi, chaque fente est plus large (d'un côté à l'autre) et moins profonde (d'un côté à l'autre) vers la périphérie du stator mais plus étroite (d'un côté à l'autre) et profonde vers le centre du stator. Grâce à cette disposition, les bobinages se trouvent sous la surface (504) du stator (507). Le circuit magnétique comprend une couche de base en matériau ferromagnétique (509). Ce matériau ferromagnétique (509) peut se présenter comme un noyau enroulé sur lui-même à partir d'une longue bande en fer doux.

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