A motor rotor is provided. The motor rotor includes a plurality of magnetic members circumferentially disposed on a peripheral wall surface of a turning axle of the motor rotor, and both end surfaces of the turning axle are coupled with fastening members respectively; each of the magnetic members has a first fastening portion formed at each of its two ends; and the fastening member is provided with a plurality of second fastening portions corresponding in position to the first fastening portions, such that each of the magnetic members are firmly fixed in position to the turning axle.
1. A motor rotor, comprising:
a turning axle comprising a peripheral wall surface and two end surfaces;
a plurality of magnetic members circumferentially disposed on said peripheral wall surface of said turning axle, wherein first fastening portions are formed at two ends of each of said magnetic members; and
two fastening members coupled to said two end surfaces of said turning axle respectively and formed with a plurality of second fastening portions fixed in position to said first fastening portions respectively,
wherein each of said first fastening portions is a stepped portion; each of said second fastening portions is a corresponding opening, and the stepped portions are exposed outside the fastening members when fixed in position to the corresponding openings.
2. The motor rotor of claim 1 , wherein said turning axle comprises a plurality of magnetically permeable elements stacked and concatenated to one another.
3. The motor rotor of claim 2 , wherein said magnetically permeable elements are silicon steel sheets.
4. The motor rotor of claim 1 , wherein said magnetic members are permanent magnets.
5. The motor rotor of claim 1 , wherein said magnetic members are arc-shaped and correspond in shape to said peripheral wall surface.
6. The motor rotor of claim 1 , wherein said first fastening portions at the two ends of each of said magnetic members are equal in length.
7. The motor rotor of claim 1 , wherein said first fastening portions at the two ends of each of said magnetic members are unequal in length.
8. The motor rotor of claim 1 , wherein said first fastening portions formed at the two ends of each of said magnetic members are convex and concave respectively.
9. The motor rotor of claim 1 , wherein each of said first fastening portions is a groove, and each of said second fastening portions is a bump.
10. The motor rotor of claim 9 , wherein said first fastening portions at the two ends of each of said magnetic members are equal in sunken depth.
11. The motor rotor of claim 9 , wherein said first fastening portions at the two ends of each of said magnetic members are unequal in sunken depth.
12. The motor rotor of claim 1 , wherein the fastening members are one of non-magnetically permeable sheet metal members and plastic members.
13. The motor rotor of claim 12 , wherein the fastening members are sheet metal members made of one selected from the group consisting of aluminum, copper, zinc, tantalum, and stainless steel.
14. The motor rotor of claim 1 , wherein said turning axle further is formed with a first coupling portion, and each of said fastening members is formed with a second coupling portion corresponding in position to said first coupling portion.
15. The motor rotor of claim 14 , wherein said first coupling portion is an opening, and said second coupling portion is an opening.
16. The motor rotor of claim 15 , wherein said turning axle comprises a plurality of magnetically permeable elements stacked and concatenated to one another, and said first coupling portion is formed at magnetically permeable elements at two ends of said turning axle.
17. The motor rotor of claim 15 , wherein each of said fastening members is formed with an opening for said turning axle to run through, and said second coupling portion is disposed between said opening and said second fastening portion.
18. The motor rotor of claim 17 , wherein said second coupling portion and said opening are coaxial.
19. The motor rotor of claim 14 , wherein said turning axle comprises a plurality of magnetically permeable elements stacked and concatenated to one another and penentratedly connected to a main axle, with the first coupling portions being through holes formed in in said main axle, and said second coupling portions being hollow protruding posts extended from said openings and formed with through holes corresponding in position to said first coupling portions.
20. The motor rotor of claim 19 , further comprising bolts penetrating said first coupling portions and said through holes of said second coupling portions.