Plastic-coated rotor
By attaching a stainless steel shell to the outer and bottom walls of the magnets and combining it with a plastic shell design, the problem of insufficient rotor magnetic strength and torque limits was solved, thus improving safety and efficiency.
Patent Information
- Application Number
- CN202423266287.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The plastic or rubber coating on the outer layer of existing rotors affects the magnetic strength and torque limit, resulting in unsafe use and low efficiency.
The first outer shell, made of stainless steel, is attached to the outer and bottom walls of the magnet. Combined with the second outer shell, made of plastic, it features a shaft hole and groove structure to enhance the protection of the magnet and improve the injection molding effect.
It improves the rotor's surface magnetic strength and torque limit, ensuring safety and efficiency, while also improving injection molding results and reducing production costs.
Smart Images
Figure CN223680843U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a plastic-coated rotor. BACKGROUND
[0002] When carrying out some experiments in the laboratory which need to stir liquid, the magnetic stirrer is often used, the magnetic stirrer utilizes the transmission principle of permanent magnet coupling to carry out space transmission, so that the liquid and the equipment are isolated, the safe use of the equipment can be guaranteed, and the existing rotor is wrapped by plastic or rubber, which affects the surface magnetic intensity and torque limit of the rotor. SUMMARY
[0003] The utility model provides a plastic-coated rotor.
[0004] The utility model provides a plastic-coated rotor.
[0005] A plastic-coated rotor, including magnetic steel, the first shell is pasted on the bottom wall and the outer wall of the magnetic steel, the first shell is continued from the outer wall top to the inside of the bottom wall, the second shell is pasted on the top wall and the inner wall of the magnetic steel, the shaft hole is set up in the second shell, a plurality of grooves are set up in the top and the bottom of the shaft hole.
[0006] Preferably, the magnetic steel is a circular ring body.
[0007] Preferably, the material of the first shell is stainless steel.
[0008] Preferably, the material of the magnetic steel is high-performance bonded Nd-Fe-B.
[0009] Preferably, the material of the second shell is plastic.
[0010] Preferably, the first shell on the top of the outer wall and the inside of the bottom of the magnetic steel is curved and smoothly transitioned to the adjacent edge.
[0011] Preferably, the shaft hole is provided with a step hole extending inward, and the shaft key matched with the shaft is arranged on the inner wall of the shaft hole above the step hole.
[0012] Compared with the prior art, the plastic-coated rotor of the utility model is provided with the first shell pasted on the outer wall and the bottom wall of the magnetic steel, the first shell is used for protecting the magnetic steel, the surface magnetic intensity on the first shell is guaranteed due to the fact that the first shell is pasted on the magnetic steel, and the torque limit of the rotor is enhanced, the first shell on the top of the outer wall and the inside of the bottom wall of the magnetic steel is smoothly transitioned between the magnetic steel, plays a role in preventing the magnetic steel from being pulled out, and can realize plastic-coated clamping in the subsequent plastic-coated process, prevents the edge from being warped and the seam from being raised, and the grooves set up in the top and the bottom of the shaft hole of the second shell can improve the injection molding effect of the second shell. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is a perspective view of the plastic-covered rotor of the utility model.
[0014] Figure 2 It is a sectional view of the plastic-covered rotor of the utility model.
[0015] Figure 3 It is the A place enlarged view of the plastic-covered rotor of the utility model. Figure 2 Specific implementation
[0016] The utility model will be described further in detail below in combination with the embodiment of the drawings.
[0017] As Figures 1 to 3 shown, a plastic-covered rotor includes a magnetic steel 1, the magnetic steel 1 is a circular ring body, the first shell 3 is attached to the bottom wall and the outer wall of the magnetic steel 1, for protecting the magnetic steel 1, the material of the first shell 3 is stainless steel, which is fixed to the outside of the magnetic steel 1 by spinning process, the spinning process makes the thickness of the first shell 3 smaller, reduces the inner and outer transmission magnetic field action distance, ensures the surface magnetic intensity of the rotor, and enhances the torque limit value; The first shell 3 continues from the top end of the outer wall to the inside of the bottom wall, and the first shell 3 on the top of the outer wall and the inside of the bottom is curved and smoothly transitioned to the adjacent side.
[0018] The second shell 2 is attached to the top wall and the inner wall of the magnetic steel 1, the second shell 2 is provided with a shaft hole in the inside, a plurality of grooves 21 are arranged at intervals around the top and bottom of the shaft hole, a stepped hole extending inward is arranged in the inside of the shaft hole, a shaft key 22 matched with the shaft is arranged on the inner wall of the shaft hole above the stepped hole, and the stepped hole is used for axial limiting to facilitate the installation of the shaft.
[0019] The second shell 2 is integrally formed by injection molding, the transition connection of the first shell 3 at the edge not only plays a function of preventing falling off, but also facilitates plastic covering clamping and prevents the first shell 3 from being warped and jointed; The grooves 21 can prevent the second shell 2 from expanding and shrinking during injection molding, the grooves 21 reserved in advance can discharge internal gas, so as to avoid the appearance of hollow areas in the inside of the second shell 2 and improve the injection molding effect.
[0020] The material of the magnetic steel 1 is high-performance bonded neodymium iron boron, which can realize radial multi-stage magnetization of a single ring while meeting the torque performance requirements, has low production cost and good comprehensive performance; The material of the second shell 2 is plastic, specifically peek+30 glass fiber; The peek material has excellent mechanical properties, strong resistance to chemical substances and high thermal stability.
[0021] The utility model discloses a plastic -clad rotor is through the first shell 3 of setting first on the outer wall and bottom wall of magnet steel 1, the first shell 3 is used for protecting magnet steel 1, because the first shell 3 is attached on magnet steel 1, has guaranteed the surface magnetic intensity on the first shell 3, has strengthened the torque limit of rotor, the first shell 3 between magnet steel 1 is set with magnet steel 1 between the smooth transition of the outer wall top of magnet steel 1 and bottom wall inner side, has played the effect of preventing and has realized plastic -clad clamping in the subsequent plastic -clad process, prevents the edge and seam of warping, is provided with the recess 21 in the axial hole top and bottom of second shell 2 one week interval, can improve the injection molding effect of second shell 2.
[0022] Finally, it should be noted that: the above examples only illustrate the technical solutions of the utility model, rather than limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it still can modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.
Claims
1. A resin-encased rotor comprising a magnetic steel (1), characterized in that, The bottom wall and the outer wall of the magnetic steel (1) are attached with a first shell (3), which extends from the top end of the outer wall to the inner side of the bottom wall, the top wall and the inner wall of the magnetic steel (1) are attached with a second shell (2), the inside of the second shell (2) is provided with a shaft hole, a plurality of grooves (21) are arranged at the top and bottom of the shaft hole.
2. The encapsulated rotor of claim 1, wherein The magnetic steel (1) is a circular ring body.
3. The encapsulated rotor of claim 1, wherein The material of the first shell (3) is stainless steel.
4. The encapsulated rotor of claim 1 wherein, The material of the magnetic steel (1) is high-performance bonded Nd-Fe-B.
5. The encapsulated rotor of claim 1 wherein, The material of the second shell (2) is plastic.
6. The encapsulated rotor of claim 1 wherein, The first shell (3) on the top and the inner side of the bottom of the outer wall of the magnetic steel (1) is curved and smoothly transitioned to the adjacent side.
7. The encapsulated rotor of claim 1 wherein, The inside of the shaft hole is provided with an inwardly extending stepped hole, and the inner wall of the shaft hole above the stepped hole is oppositely provided with a shaft key (22) matched with the shaft.