Disc type motor rotor convenient for fixing magnetic steel
By creating shallow positioning grooves between the rotor support sections of the disc motor and using fixing rings and fastening rings to fix the magnets, the safety hazards of traditional adhesive fixing methods are solved, achieving reliable fixing and convenient assembly of the magnets.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-03
AI Technical Summary
In traditional disc motors, the magnets are fixed to the rotor with adhesive, which poses a safety hazard. The adhesive is prone to aging, which reduces the bonding strength and makes the magnets easy to fall off.
A shallow positioning groove is opened on the outside of the base circle between the support parts. The magnet is embedded in the shallow positioning groove and fixed by a fixing ring and a fastening ring. A rubber pad is set on the inner side of the fastening ring. Threaded holes are opened on both sides of the support part and bolts are used to fix it to the through holes of the fastening ring.
It effectively prevents the magnet from shifting during high-speed rotation, ensures reliable fixation, and is easy to assemble and disassemble.
Smart Images
Figure CN223967714U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of disc motor rotor technology, and specifically to a disc motor rotor that is easy to fix with magnets. Background Technology
[0002] Disc motors are widely used in electric vehicles, wind power generation, and other fields due to their small axial dimensions and high power density. In traditional disc motor rotors, magnets are usually fixed together with adhesive. This method poses certain safety hazards, as the adhesive is prone to deterioration and aging over time or at high temperatures, leading to a significant decrease in bonding strength and eventually causing the magnets to detach. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings and deficiencies of the existing technology by providing a disc motor rotor that is easy to fix with magnets.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a disc motor rotor that facilitates magnet fixing, comprising a rotor disc and multiple magnets. The rotor disc includes a base circle and multiple support parts. The support parts extend outward from the periphery of the base circle, and the magnets are located between the support parts. The innovation lies in: a shallow positioning groove is formed on the outside of the base circle between the support parts, and one end of the magnet is embedded in the shallow positioning groove. The outer ring of the support part and the magnet forms a complete circle, and a fixing ring is sleeved on the outside. Fastening rings are provided on both sides of the fixing ring. The cross-section of the fastening ring is L-shaped and covers both sides of the fixing ring. The inner ring of the fastening ring extends to the support part and is fixed to the support part by bolts.
[0005] Furthermore, multiple rubber pads are provided on the inner side of the fastening ring. The number of rubber pads is the same as the number of magnets, and the two correspond one-to-one. Under the action of the fastening ring, the rubber pads are tightly attached to both sides of the magnets.
[0006] Furthermore, the support portion has multiple threaded holes on both sides, with the threaded holes on the same side spaced apart and the threaded holes on both sides staggered. The fastening ring has multiple through holes, which correspond one-to-one with the threaded holes and are fixed by bolts.
[0007] The beneficial effects of this utility model after adopting the above structure are as follows:
[0008] This utility model uses a shallow positioning groove to position and fix one end of the magnet, while the support part limits the left and right sides of the magnet. Then, the other end of the magnet is limited by a fixing ring, and finally, the fixing ring is fixed by a fastening ring, which effectively prevents the magnet from shifting due to high-speed rotation. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model;
[0010] Figure 2 This is a schematic diagram of the rotor disk in this utility model;
[0011] Figure 3 This is a schematic diagram of the fastening ring in this utility model;
[0012] Figure 4 for Figure 3 Sectional view of AA.
[0013] Explanation of reference numerals in the attached figures:
[0014] 1. Rotor disc, 11. Base circle, 12. Support part, 13. Positioning shallow groove, 14. Threaded hole, 2. Magnet, 3. Fixing ring, 4. Fastening ring, 41. Through hole, 5. Rubber pad. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings.
[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.
[0017] See Figure 1-4 A disc motor rotor for easy magnet fixing includes a rotor disc 1 and multiple magnets 2. The rotor disc 1 includes a base circle 11 and multiple support parts 12. The support parts 12 extend outward from the periphery of the base circle 11. The magnets 2 are located between the support parts 12. A positioning shallow groove 13 is opened on the outside of the base circle between the support parts 12. One end of the magnet 2 is embedded in the positioning shallow groove 13. The outer rings of the support parts 12 and the magnets 2 form a complete circle, and a fixing ring 3 is sleeved on the outside. Fastening rings 4 are provided on both sides of the fixing ring 3. The cross-section of the fastening ring 4 is L-shaped and covers both sides of the fixing ring 3. The inner ring of the fastening ring 4 extends to the support part and is fixed to the support part 12 by bolts (not shown in the figure). Specifically, the magnet 2 is placed between the support parts 12, and its front end is inserted into the positioning shallow groove 13 to position and fix one end of the magnet 2. At the same time, the support parts 12 limit the left and right sides of the magnet 2, and then the other end of the magnet 2 is limited by the fixing ring 3. Finally, the fixing ring 3 is fixed by the fastening ring 4, which means the magnet 2 is fixed, effectively preventing the magnet from shifting due to high-speed rotation. The whole assembly process is convenient and quick, and it is also easy to disassemble.
[0018] In this embodiment, multiple rubber pads 5 are provided on the inner side of the fastening ring 4. The number of rubber pads 5 is the same as the number of magnets 2, and the two correspond one-to-one. Under the action of the fastening ring 4, the rubber pads 5 are tightly attached to both sides of the magnets 2. The rubber pads 5 are used to compensate for the height difference between the surface of the magnets and the inner wall of the fastening ring 4, and at the same time, they can further improve the fastening of the magnets.
[0019] In this embodiment, the support portion 12 has multiple threaded holes 14 on both its front and back sides, with the threaded holes on the same side spaced apart and staggered on both sides. The fastening ring 4 has multiple through holes 41, each corresponding to one of the threaded holes 14, and is secured with bolts. The spaced-apart distribution of the threaded holes 14 on the same side saves costs and ensures uniform force distribution on the fastening ring 4. The staggered arrangement of the threaded holes on both sides prevents interference between the bolts on both sides.
[0020] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A disc motor rotor for easy magnet fixing, comprising a rotor disc and a plurality of magnets, the rotor disc comprising a base circle and a plurality of support portions, the support portions extending outwardly from the periphery of the base circle, the magnets being located between the support portions, characterized in that: A shallow positioning groove is formed on the outer side of the base circle between the support parts. One end of the magnet is embedded in the shallow positioning groove. The outer ring of the support part and the magnet forms a complete circle, and a fixing ring is sleeved on the outside. Fastening rings are provided on both sides of the fixing ring. The cross-section of the fastening ring is L-shaped and covers both sides of the fixing ring. The inner ring of the fastening ring extends to the support part and is fixed to the support part by bolts.
2. The disc motor rotor for easy magnet fixing according to claim 1, characterized in that: Multiple rubber pads are provided on the inner side of the fastening ring. The number of rubber pads is the same as the number of magnets, and the two correspond one-to-one. Under the action of the fastening ring, the rubber pads are tightly attached to both sides of the magnets.
3. The disc motor rotor for easy magnet fixing according to claim 1, characterized in that: The support has multiple threaded holes on both sides, with the threaded holes on the same side spaced apart and the threaded holes on the two sides staggered. The fastening ring has multiple through holes, which correspond one-to-one with the threaded holes and are fixed by bolts.