Permanent magnet rotor and method for mounting permanent magnet rotor
A technology of permanent magnets and permanent magnet rotors, applied to rotating parts of magnetic circuits, synchronous motors with stationary armatures and rotating magnets, magnetic circuits, etc., and can solve problems such as deviation, complicated rotor assembly, and deformation of iron shells
Inactive Publication Date: 2011-08-24
THE GATES CORP
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
The rotor assembly is complicated, and it is easy to cause large deviations during the assembly process, for example, the deformation of the iron shell caused by fixing the permanent magnets to the iron shell
Method used
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Embodiment Construction
[0020] The technical solutions and other beneficial effects of the present invention will be apparent through the detailed description of specific embodiments of the present invention below in conjunction with the accompanying drawings.
[0021] In the drawings, the rotor 1 is a permanent magnet rotor suitable for a brushless direct current (BLDC) motor with an inner stator (not shown in the drawings).
[0022] refer to figure 1 , The rotor 1 has an injection-molded load-bearing structure 2, the load-bearing structure 2 has a disc-shaped body 3, and the disc-shaped body 3 has a number of radially extending grooves 4.
[0023] The bearing structure 2 is overmolded on one end of the central axis 5 . The central shaft 5 can be made of metal and extends along the central axis of the dish 3 .
[0024] The outer edge of the disc-shaped body 3 is connected to a cylindrical cage body 6 , and the cage body 6 is centered on the shaft 5 and extends along the axial direction of the shaf...
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The invention relates to a permanent magnet rotor for a brushless electric motor and a method for mounting the permanent magnet rotor. The rotor comprises a carrier structure of molded plastic that includes a disc portion to which there is centrally fixed a shaft and whose periphery is joined to an essentially cylindrical cage portion coaxial with the shaft, in which portion there are disposed a magnetic flux conducting structure forming an essentially cylindrical wall which is coaxial with the shaft, and a plurality of permanent magnets shaped as ring segments, disposed at angular intervals within and adjacent to said flux conducting structure; the cage portion comprises a plurality of struts on the inner side of the magnetic flux conducting structure and such that between the magnetic flux conducting structure and each pair of adjacent struts there is defined a respective seat adapted to snugly receive a respective permanent magnet. The assembly of the rotor is simple and the deviation is small.
Description
technical field [0001] The present invention relates to motors, and more particularly to permanent magnet rotors suitable for use in internal stator brushless motors and methods of mounting permanent magnets to the rotor. Background technique [0002] The rotor of a traditional inner-stator brushless motor includes a rotating shaft, an annular iron shell fixed to one end of the rotating shaft, and permanent magnets fixed inside the iron shell. The rotor is complicated to assemble, and large deviations are likely to be caused during the assembly process, for example, the deformation of the iron shell is caused when the permanent magnet is fixed to the iron shell. [0003] Therefore, there is an urgent need for a rotor that is easy to assemble and has less deviation. Contents of the invention [0004] It is an object of the invention to provide a rotor that is easy to assemble and has less misalignment. The permanent magnet rotor suitable for internal stator brushless moto...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02K29/00H02K1/27H02K1/28
CPCH02K5/08H02K15/03H02K1/2786H02K21/22H02K1/28H02K1/2791Y10T29/49012
Inventor 卢斯亚诺·马齐托尼古拉·雷
Owner THE GATES CORP