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Electric motor having a printed circuit board attached to a stator and at least partially supporting a bearing
| Details |
Inventors: Lesak, Alan E.;
Assignee: A. O. Smith Corporation (Milwaukee, WI)
Primary Examiner: Schuberg; Darren
Assistant Examiner: Scheuermann; David W.
Attorney, Agent or Firm: Michael Best & Friedrich LLP
An electric motor that includes a stator, a rotor including a rotor shaft and a support member coupled to the stator. A first bearing is at least partially disposed within the support member and a printed circuit board is coupled to the stator. A second bearing is at least partially disposed within the printed circuit board. The first bearing and the second bearing cooperate to support the rotor shaft for rotation relative to the stator. |
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DETAILED DESCRIPTION Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following figures.
The invention is capable of other embodiments and of being practiced or of being carried out in various ways.
Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
The use of "including," "comprising," or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.
Unless specified or limited otherwise, the terms "mounted," "connected," "supported," and "coupled" and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings.
Further, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings.
As shown in the FIGS.
1 and 2, a motor 10, in the form of a brushless DC C-frame motor, includes a stator 15, a rotor 20, and a printed circuit board 25.
For the construction shown, the stator 15 includes a C-frame portion 30 and a bar portion 35.
The C-frame portion 30 is formed from a plurality of laminations that are stacked in intimate contact and bonded to one another (e.
g.
, welded, riveted, adhesive bonding, and the like).
The C-frame portion 30 includes a first portion 40 that defines an aperture 45 that passes through the various laminations and is sized to receive the rotor 20.
The aperture 45 at least partially defines two stator poles that interact with the rotor 20 to produce the desired rotor rotation, as is well known in the motor art.
The C-frame portion 30 of the stator 15 also includes a first leg 55 and a second leg 66.
The first and second legs 55, 60 extend from the ends of the first portion and are substantially perpendicular to the first portion 40
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Generators or Motors 
