Electomotor
A technology of electric motors and pole shoes, applied in the field of electric motors, can solve the problems of low torque density, high cost, and expensive motors, etc., and achieve the effect of compact structure and low cost
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[0040] According to one embodiment, the rotor core 300 has a plurality 210 of pole shoes 211 , 212 , which preferably form a plurality 231 of recesses 230 oriented at least approximately in a spoke-like manner for accommodating a plurality of permanent magnets 240 . It should be pointed out, however, that the plurality of recesses 231 are here merely illustrative and not as a limitation of the invention to be arranged in the shape of a spoke, and can alternatively also be constructed on the rotor core 300 in any other way. The permanent magnets 240 are preferably glued and / or clamped or pressed into the recesses 230 . The permanent magnet 240 is preferably composed of a material without rare earths, depending on the type of block magnet, but can alternatively also have a rare earth material.
[0041] According to one specific embodiment, at least one preferably disk-shaped or plate-shaped multi-pole magnet 250 , 290 is arranged on at least one end side 201 , 202 of the rotor c...
Example
[0045] explanatory in image 3 A disk magnet 250, 290 is arranged on each end side 201, 202 of the rotor core 300, respectively. According to a first embodiment, each of the disk magnets 250 , 290 has a disk-shaped base body 399 , 398 with a plurality of 342 disk segments 340 , 341 , wherein a plurality of disk segments 340 , 341 Each disk segment in is composed of one of the plurality 322 of permanent magnets 320 , 321 . The plurality 322 of permanent magnets 320 , 321 preferably have an even number of permanent magnets 320 , 321 , which corresponds to the predetermined number of pole shoes 211 , 212 of the rotor core 300 or the number of permanent magnets 240 .
[0046] By way of explanation, the permanent magnets 320 used to form the disk section 340 have a magnetic north pole on their end side remote from the rotor core 300 , and the permanent magnets 321 used to form the disk section 341 have a magnetic south pole. Overall, the plurality 322 of permanent magnets 320 , 3...
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