H - Electricity – 02 – K
Patent
H - Electricity
02
K
248/1, 26/113
H02K 5/00 (2006.01) F04D 29/28 (2006.01) F04D 29/62 (2006.01) F16F 15/06 (2006.01) H02K 5/24 (2006.01) H02K 7/14 (2006.01)
Patent
CA 1048473
ABSTRACT OF THE DISCLOSURE Disclosed subject matter includes flexible motor mounting members particularly adapted for vibration induced flexing movement combined with oscillatory movement about a pivot axis at a point of attachment on a blower housing or other support. Short but strong mounting members are provided that have low torsional mode vibration transmissibilities. Leaf spring mounting arms have low torsional spring constants and yet have sufficient strength to withstand shipping and handling loads for motor/blower assemblies and to permit all angle motor mounting. The mounting member spring constants for axial, radial and tilting vibration modes are selected in specific forms so that the characteristic vibration transmissibility ratios for these modes are each close to unity. However, the characteristic torsional mode vibration transmissibility is substantially less than unity. In particularly preferred embodiments of the invention, sheet steel having a martensitic grain structure is utilized to form the mounting members. Sends in this material have a radius of at least seven times the thickness of the material. One method includes forming lugs or mounting members from the selected material and then trapping one end of these members between oppositely facing surfaces of fastening members. In some forms, the motor shell constitutes one fastening member and a holding plate is another fastening member and, it is preferred to capture a motor pad portion of the lug against the motor shell and projection weld the projections from the plate to the motor shell. This method by conventional welding processes. This also provides a very strong fastening scheme that meets the rigors of shipping and handling as well as the rigors caused by prolonged vibration. The free end of the lug is specifically configured to prevent Abstract - continued: deformation and tearing, and the lugs are extremely easy to mount to a blower housing simply by deflecting the mounting arms (when necessary) with finger pressure so as to align holes in the mounting arms with previously provided holes in the blower housing. In another form, the motor end of mounting lugs are trapped between two pieces of steel that are welded together to form a mounting block having a strap accommodating slot therein. The assembled blocks and members are then strapped to a motor shell. In one particular procedure, I sandwich the motor end of a mounting lug between a motor shell and a reinforcing member at a welding station and weld projections from the reinforcing member to the shell. Thereafter, a rotatable assembly is supported in the stator. After the above- mentioned welding step, but prior to shipping the final motor assembly, it is preferable that at least the motor shell be treated (e.g., by painting) for appearance and corrosion or rust prevention purposes.
266665
Litch Ernest W. (iii)
LandOfFree
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