CN204068475U - Magnet rotor - Google Patents

Abstract

The utility model provides a kind of magnet rotor, magnet rotor comprises rotor core and is arranged on the magnetic shoe in the peripheral side of rotor core, the peripheral side of rotor core has the linkage section for installing magnetic shoe, the inner arc end face of magnetic shoe is connected with linkage section, and the radius of curvature of inner arc end face is less than the radius of curvature of linkage section.The magnetic shoe of magnet rotor of the present utility model is connected with rotor core, wherein the inner arc end face of magnetic shoe is connected with the linkage section of the circumference being positioned at rotor core, and the radius of curvature of inner arc end face is less than the radius of curvature of linkage section, such inner arc end face is that arch is connected on linkage section, the two ends of inner arc end face contact with linkage section, what make that magnetic shoe can be stable is arranged on rotor core, the situation that one end tilts can not be there is, ensure that the balance of magnet rotor, reduce torque pulsation in magnet rotor rotation process, improve Stability and dependability when motor runs.

Description

Magnet rotor

Technical field

The utility model relates to motor device field, more specifically, relates to a kind of magnet rotor.

Background technology

The rotor of motor is divided into magnet rotor and nonmagnetic rotor, and wherein magnet rotor comprises rotor core and is arranged on the magnetic shoe on rotor core, and magnetic shoe band is magnetic, and the magnetic interaction rotor driven core of magnetic shoe and stator rotates.

The structure of this magnet rotor as shown in Figure 1, the radius of curvature of inner arc end face 21 ' of the magnetic shoe 20 ' of magnet rotor of the prior art is equal with the radius of curvature of the linkage section 13 ' of the periphery of rotor core 10 ', thus inner arc end face 21 ' and linkage section 13 ' are bonded together, thus fixing magnetic shoe 20 ' and rotor core 10 '.But, because processing exists error, so above-mentioned design easily occurs that the radius of curvature of inner arc end face 21 ' is greater than the situation of the radius of curvature of linkage section 13 ', inner arc end face 21 ' will be caused like this can not to fit together with linkage section 13 ', and one end of magnetic shoe 20 ' tilts and and there is gap between rotor core 10 '.The balance of rotor can be destroyed like this, rotor is produced in rotation process and jolts, destroy Stability and dependability when motor runs, also reduce the useful life of motor.In addition, the magnet rotor for generator is similar to the magnetic rotor structure for motor, also there are the problems referred to above.

Utility model content

The utility model aims to provide a kind of magnet rotor, easily occurs that one end tilts when being connected with rotor core with the magnetic shoe solving prior art, causes the unbalanced problem of rotor core.

For solving the problems of the technologies described above, according to an aspect of the present utility model, provide a kind of magnet rotor, comprise rotor core and be arranged on the magnetic shoe in the peripheral side of rotor core, the peripheral side of rotor core has the linkage section for installing magnetic shoe, the inner arc end face of magnetic shoe is connected with linkage section, and the radius of curvature of inner arc end face is less than the radius of curvature of linkage section.

Further, linkage section is in the convex radially outward protruded along rotor core.

Further, on rotor core, compartment of terrain is provided with multiple magnetic shoe, and the peripheral side of rotor core comprises multiple linkage section, and rotor core comprises body and protrudes from multiple boss of body along the radial direction of rotor core, forms linkage section between adjacent boss.

Further, on rotor core, compartment of terrain is provided with multiple magnetic shoe, and the outer arc end face of multiple magnetic shoe is in circumferentially same.

Further, on rotor core, compartment of terrain is provided with multiple magnetic shoe, is separated between multiple magnetic shoe by injection moulding colloid.

Further, magnetic shoe is permanent magnet.

Further, on rotor core, compartment of terrain is provided with multiple magnetic shoe, and the magnetic of adjacent magnetic shoe is different.

Further, the maximum spacing between the inner arc end face of magnetic shoe and linkage section is 0.05mm to 0.2mm.

The magnetic shoe of magnet rotor of the present utility model is connected with rotor core, wherein the inner arc end face of magnetic shoe is connected with the linkage section of the circumference being positioned at rotor core, and the radius of curvature of inner arc end face is less than the radius of curvature of linkage section, such inner arc end face is that arch is connected on linkage section, the two ends of inner arc end face contact with linkage section, what make that magnetic shoe can be stable is arranged on rotor core, the situation that one end tilts can not be there is, ensure that the balance of magnet rotor, reduce torque pulsation in magnet rotor rotation process, improve Stability and dependability when motor runs.Meanwhile, to contact with two point modes with between linkage section due to inner arc end face and middlely form arcuate gap, when the stickup carrying out magnetic shoe and rotor core is fixed, the stability that magnetic shoe assembles and consistency can be ensured, can also glue quantity be saved, reduce costs.

Accompanying drawing explanation

The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 diagrammatically illustrates the connection diagram of magnetic shoe of the prior art and rotor core;

Fig. 2 diagrammatically illustrates the connection diagram of magnetic shoe in the utility model and rotor core;

Fig. 3 diagrammatically illustrates the schematic diagram of the magnetic shoe in the utility model;

Fig. 4 diagrammatically illustrates the schematic diagram of the rotor core in the utility model;

Fig. 5 diagrammatically illustrates the stereogram of the magnet rotor in the utility model;

Fig. 6 diagrammatically illustrates the front view of the first magnet rotor in the utility model;

Fig. 7 diagrammatically illustrates the partial enlarged drawing in the Fig. 6 in the utility model; And

Fig. 8 diagrammatically illustrates the front view of the second magnet rotor in the utility model.

Reference numeral in figure: 10, rotor core; 11, body; 12, boss; 13, linkage section; 20, magnetic shoe; 21, inner arc end face; 22, outer arc end face; 30, injection moulding colloid.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.

According to an aspect of the present utility model, provide a kind of magnet rotor, as shown in Fig. 2 to 8, the magnetic shoe 20 that this magnet rotor comprises rotor core 10 and is arranged in the peripheral side of rotor core 10, it is characterized in that, the peripheral side of rotor core 10 has the linkage section 13 for installing magnetic shoe 20, the inner arc end face 21 of magnetic shoe 20 is connected with linkage section 13, and the radius of curvature of inner arc end face 21 is less than the radius of curvature of linkage section 13.

The magnetic shoe 20 of magnet rotor of the present utility model is connected with rotor core 10, wherein the inner arc end face 21 of magnetic shoe 20 is connected with the linkage section 13 of the circumference being positioned at rotor core 10, and the radius of curvature of inner arc end face 21 is less than the radius of curvature of linkage section 13, such inner arc end face 21 is connected on linkage section 13 in arch, the two ends of inner arc end face 21 contact with linkage section 13, what make that magnetic shoe 20 can be stable is arranged on rotor core 10, the situation that one end tilts can not be there is, ensure that the balance of magnet rotor, reduce torque pulsation in magnet rotor rotation process, improve Stability and dependability when motor runs.

Preferably, as shown in Figure 5 and Figure 8, on rotor core 10, compartment of terrain is provided with multiple magnetic shoe 20.More specifically, rotor core 10 is provided with even number magnetic shoe 20 altogether.Such as, magnet rotor in Fig. 2 to 8, each magnet rotor comprises 8 magnetic shoes 20.

Preferably, as seen in figs, on rotor core 10, compartment of terrain is provided with multiple magnetic shoe 20, the peripheral side of rotor core 10 comprises multiple linkage section 13, rotor core 10 comprises body 11 and protrudes from multiple boss 12 of body 11 along the radial direction of rotor core 10, forms linkage section 13 between adjacent boss 12.Boss 12, for splitting linkage section 13, also can provide guiding for magnetic shoe 20 simultaneously, make magnetic shoe 20 be installed on linkage section 13 more easily, also avoid magnetic shoe 20 contact with each other and affect magnetic.

Preferably, the center of body 11 offers axis hole.

Preferably, as shown in Figure 6 and Figure 8, on rotor core 10, compartment of terrain is provided with multiple magnetic shoe 20, and the outer arc end face 22 of multiple magnetic shoe 20 is in circumferentially same.The outer arc end face 22 of multiple magnetic shoe 20 is in circumferentially same, and magnet rotor can be made like this in rotation process to keep equal distance with stator, thus improves efficiency and the stability of motor.

Preferably, Fig. 5 to 7 shows first embodiment of magnet rotor of the present utility model, and in this embodiment, the two ends of the inner arc end face 21 of magnetic shoe 20 connect with linkage section 13 and bonding by bonding colloid.To contact with two point modes with between linkage section due to inner arc end face and middlely form arcuate gap, when the stickup carrying out magnetic shoe and rotor core is fixed, the stability that magnetic shoe assembles and consistency can be ensured, can also glue quantity be saved, reduce costs.

Interchangeable, Fig. 8 shows second embodiment of magnet rotor of the present utility model, and in this embodiment, on rotor core 10, compartment of terrain is provided with multiple magnetic shoe 20, is separated between multiple magnetic shoe 20 by injection moulding colloid 30.Also be filled with injection moulding colloid 30 between adjacent magnetic shoe 20, injection moulding colloid 30 forms colloid layer and is fixed on rotor core 10 by magnetic shoe 20.

Preferably, linkage section 13 is curved, and the radius of curvature of linkage section 13 is less than the radius at linkage section 13 place of rotor core 10.Although linkage section 13 also can realize in plane connecting magnetic shoe 20 and the object preventing magnetic shoe from tilting, the radius of curvature of linkage section 13 is more close to the radius of curvature of inner arc end face 21, and magnetic shoe 20 is just more fastening with the connection of rotor core 10.

Preferably, magnetic shoe 20 is permanent magnet.Magnet rotor is p-m rotor, and the permanent magnetism electronics manufactured by p-m rotor has that force density is high, efficiency is high, easy to maintenance, advantages of simple structure and simple compared with traditional electrical excitation electromotor.

Preferably, on rotor core 10, compartment of terrain is provided with multiple magnetic shoe 20, and the magnetic of adjacent magnetic shoe 20 is different.

Preferably, as shown in Figure 7, the maximum spacing between the inner arc end face 21 of magnetic shoe 20 and linkage section 13 is 0.05mm to 0.2mm.This distance values is determined by the size of magnet rotor, and namely by the value of the radius of curvature R determination spacing δ of the linkage section 13 of rotor core 10, size is larger, and spacing is corresponding can be arranged larger.

As shown in Figure 4, after the value determining the maximum spacing δ between the inner arc end face 21 of magnetic shoe 20 and linkage section 13, account for the circumferential angle θ of rotor core 10 again according to the radius of curvature R of the linkage section 13 of rotor core 10 and magnetic shoe 20, just can calculate the radius of curvature r of inner arc end face 21, wherein:

$r=\frac{{\left(\mathrm{RSin}\frac{\mathrm{\θ}}{2}\right)}^2}{2R(1-\mathrm{Cos}\frac{\mathrm{\θ}}{2})+2\mathrm{\δ}}+\frac{R(1-\mathrm{Cos}\frac{\mathrm{\θ}}{2})+\mathrm{\δ}}{2}.$

The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.

Claims (8)

1. a magnet rotor, comprise rotor core (10) and be arranged on the magnetic shoe (20) in the peripheral side of described rotor core (10), it is characterized in that, the peripheral side of described rotor core (10) has the linkage section (13) for installing described magnetic shoe (20), the inner arc end face (21) of described magnetic shoe (20) is connected with described linkage section (13), and the radius of curvature of described inner arc end face (21) is less than the radius of curvature of described linkage section (13).

2. magnet rotor according to claim 1, is characterized in that, described linkage section (13) is in the convex radially outward protruded along described rotor core (10).

3. magnet rotor according to claim 1, it is characterized in that, the upper compartment of terrain of described rotor core (10) is provided with multiple described magnetic shoe (20), the peripheral side of described rotor core (10) comprises multiple described linkage section (13), described rotor core (10) comprises body (11) and protrudes from multiple boss (12) of described body (11) along the radial direction of described rotor core (10), forms described linkage section (13) between adjacent described boss (12).

4. magnet rotor according to claim 1, it is characterized in that, the upper compartment of terrain of described rotor core (10) is provided with multiple described magnetic shoe (20), and the outer arc end face (22) of multiple described magnetic shoe (20) is in circumferentially same.

5. magnet rotor according to claim 1, it is characterized in that, the upper compartment of terrain of described rotor core (10) is provided with multiple described magnetic shoe (20), is separated between multiple described magnetic shoe (20) by injection moulding colloid (30).

6. magnet rotor according to any one of claim 1 to 5, is characterized in that, described magnetic shoe (20) is permanent magnet.

7. magnet rotor according to claim 6, is characterized in that, the upper compartment of terrain of described rotor core (10) is provided with multiple described magnetic shoe (20), and the magnetic of adjacent described magnetic shoe (20) is different.

8. magnet rotor according to claim 1, is characterized in that, the maximum spacing between the inner arc end face (21) of described magnetic shoe (20) and described linkage section (13) is 0.05mm to 0.2mm.