Rotating shaft and motor rotor having the same
AssigneeSystem General Corp.
InventorsShih-Jen Yang, Hung-Sen Tu, I-Hsing Chen, Chen-Cha Yang
Life of this patent
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Abstract
A rotating shaft disclosed by the present invention includes a plurality of bumps spacedly formed along an outer circumferential surface thereof. The bumps are each formed with two engagement portions extending outwardly and bilaterally and a deformation space therebetween. The engagement portions undergo resilient deformation toward the deformation space when subjected to a force, thus providing stable engagement with a magnetic body, protecting the magnetic body from cracks and damages during assembling, and enhancing yield. The present invention further discloses a motor rotor having the above-described rotating shaft.
Claims20
A rotating shaft having a plurality of bumps spacedly formed along an outer circumferential surface thereof such that magnetic bodies can be embedded between adjacent bumps, the rotating shaft being characterized in that:
- the bumps are each formed with two engagement portions extending outwardly and bilaterally and with a deformation space between the engagement portions, the engagement portions undergoing resilient deformation toward the deformation space when subjected to a force, wherein each of the bumps has a frame sectional structure, the tops of the two engagement portions of each of the bumps are connected together to form the frame sectional structure, wherein the bottoms of the two engagement portions of each of the bumps are connected together over the outer circumferential surface, and the two engagement portions are respectively located ay two side edges thereof,
- wherein recesses are formed on a center section of two sides of each of the magnetic bodies for engaging with the engagement portions to provide a clamping force.
A motor rotor, comprising:
- a rotating shaft having a plurality of bumps spacedly formed along an outer circumferential surface thereof, wherein the bumps are each formed with two engagement portions extending outwardly and bilaterally and with a deformation space between the engagement portions, the engagement portions undergoing resilient deformation toward the deformation space when subjected to a force, wherein each of the bumps has a frame sectional structure, the tops of the two engagement portions of each of the bumps are connected together to form the frame sectional structure, wherein the bottoms of the two engagement portions of each of the bumps are connected together over the outer circumferential surface, and the two engagement portions are respectively located at two side edges thereof;
- and
- a plurality of magnetic bodies respectively embedded between the bumps on the outer circumferential surface of the rotating shaft, two sides of each magnetic body being fixed by the engagement portions of two adjacent bumps, and recesses being formed on a center section of two sides of each of the magnetic bodies for engaging with the engagement portions to provide a clamping force.
Dependencies are inferred from the claim text.