Rotor magnet fixing structure

Abstract

The utility model provides a rotor magnet fixing structure which comprises a magnetic base body, a plurality of magnets and two end face silicon steel sheets. The magnetic substrate is formed by overlapping a plurality of silicon steel sheets, and a bonding area is formed on the outer periphery of the magnetic substrate; the inner side edges of the magnets are arranged in the combination area in a matched mode, and grooves are formed in the upper end faces and the lower end faces of at least part of the magnets in a concave mode respectively; the two end face silicon steel sheets are arranged on the upper end face and the lower end face of the magnetic base body respectively, at least one fixing petal is arranged on each end face silicon steel sheet in an outward protruding mode, the fixing petals cover the upper end faces and the lower end faces of the magnets respectively, and at least part of the fixing petals are respectively provided with a buckle in an axial protruding mode. And the grooves on the upper and lower end faces of the plurality of magnets are correspondingly interfered and buckled. Therefore, the number of elements, the cost and the precision requirement are reduced, the friction force which can be borne by an interface is improved, the fixing stability is improved, and the risks that any element in the rotor is damaged and the rotor breaks down and loses efficacy are greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotor structure, especially a rotor magnet fixing structure. BACKGROUND

[0002] The rotor structure of the current common motor is that the magnet cooperates with a plurality of silicon steel sheets to provide magnetic conduction and reduce iron loss. For example, as shown in the figure, the plurality of silicon steel sheets 91 are arranged on the outer periphery to cooperate with the plurality of magnets 92. Figure 1

[0003] At this time, in order to fix the plurality of magnets 92 and the plurality of silicon steel sheets 91, at least one fixing member 93 (such as a bolt) is used to pass through at least one hole 910 formed between the plurality of magnets 92 and the plurality of silicon steel sheets 91 to provide relative limiting between the plurality of magnets 92 and the plurality of silicon steel sheets 91. In some variations (not shown), the at least one fixing member 93 can also be directly formed on one of the plurality of magnets 92 or the plurality of silicon steel sheets 91 to cooperate with the at least one hole 910 on the other. However, in order to arrange the at least one fixing member 93 on the outer periphery of the plurality of silicon steel sheets 91 to fix the plurality of magnets 92, the at least one hole 910 must be formed, which limits the flexibility of arranging the plurality of magnets 92 on the outer periphery of the silicon steel sheets 91.

[0004] In addition, because the plurality of silicon steel sheets 91 are actually disc-shaped and are arranged in a multi-layered stacked manner (cylindrical) to cooperate with the plurality of magnets 92, the at least one fixing member 93 needs to limit the silicon steel sheets 91 layer by layer relative to the plurality of magnets 92 during fixing to ensure that each layer of silicon steel sheets 91 is fixed. However, because the plurality of silicon steel sheets 91 are arranged in a stacked manner, there is a tolerance between any two layers of silicon steel sheets 91, so that the at least one fixing member 93 needs to be improved in manufacturing precision to be successfully passed through the at least one hole 910, otherwise problems such as obstruction of passing through or loose cooperation between the plurality of silicon steel sheets 91 after passing through will be caused. Furthermore, because the plurality of silicon steel sheets 91 and the magnet 92 are made of hard materials, even if the at least one fixing member 93 is made of a ductile material, the friction force that can be tolerated between the interface of the plurality of silicon steel sheets 91 and the magnet 92 is still limited, which affects the fixing.

[0005] ​On the other hand, even if the positioning of the silicon steel sheets 91 of each layer is provided via the at least one fixing member 93, because the plurality of silicon steel sheets 91 are stacked on each other, the plurality of silicon steel sheets 91 closest to the upper and lower end faces are still prone to disengage from the relative positioning at both ends of the at least one fixing member 93. Therefore, the prior art also uses the way of additionally providing upper and lower cover plates (not shown) of the outer layer to fix the plurality of silicon steel sheets 91. However, the cover plates not only increase the volume of the rotor, but the cover plates themselves can also disengage, so that the fixing effect using the upper and lower cover plates is still limited.

[0006] In summary, the plurality of silicon steel sheets 91 (or even the cover plates) that are not tightly fitted or disengage from the relative positioning not only affect the stability of the rotor in operation, but also are more likely to cause the plurality of magnets 92 to be broken or even the rotor to malfunction or fail due to collision, so that the prior art rotor structure not only has limited design flexibility, requires high manufacturing precision, is greatly affected by tolerances, and is also difficult to effectively provide stable positioning of the plurality of silicon steel sheets 91 relative to the plurality of magnets 92.

[0007] Therefore, how to solve the above-mentioned problems and deficiencies of the prior art is the research and improvement direction of the present inventor and relevant manufacturers in this industry. Content of the utility model

[0008] Therefore, in order to effectively solve the above-mentioned problems, the purpose of the present utility model is to provide a rotor magnet fixing structure.

[0009] The utility model provides a rotor magnet fixing structure, characterized by comprising:

[0010] A magnetic base body is formed by a plurality of silicon steel sheets stacked on each other along the axial direction, and at least one bonding area is formed at the outer periphery of the magnetic base body;

[0011] A plurality of magnets with a height corresponding to the magnetic base body has an outer flange and an inner side edge opposite to the outer flange, the plurality of magnets are respectively arranged at the bonding areas of the outer periphery of the magnetic base body with the inner side edges, and at least part of the upper and lower end faces of the plurality of magnets are respectively recessed with a groove; and

[0012] Two end face silicon steel sheets are respectively arranged at the upper and lower end faces of the magnetic base body, at least one fixing petal is respectively outwardly protruded at the periphery of the two end face silicon steel sheets corresponding to the plurality of magnets, the at least one fixing petal respectively covers the upper and lower end faces of the plurality of magnets, and at least part of the at least one fixing petal is respectively protruded with a buckle in the axial direction, the buckle respectively corresponds to and buckles the groove of the upper and lower end faces of the plurality of magnets.

[0013] The rotor magnet fixing structure, wherein the clasp is formed in a wedge shape and has an inward fastening wall corresponding to an inner side surface of the groove.

[0014] The rotor magnet fixing structure, wherein the clasp is formed in a semi-cylindrical shape and a circumferential surface of the clasp corresponds to an inner side surface of the groove.

[0015] The rotor magnet fixing structure, wherein the plurality of silicon steel sheets have corresponding even extension sections protruding from the outer periphery, and the extension sections of the plurality of silicon steel sheets are arranged in an axial direction to form even guide arms on both sides of the bonding area of the magnetic base.

[0016] The rotor magnet fixing structure, wherein the plurality of magnets recessed with the groove are greater than two, and the number of the at least one fixing petal of the two-end silicon steel sheet protruding with the clasp is greater than two.

[0017] The rotor magnet fixing structure, wherein the plurality of magnets recessed with the groove are symmetrically arranged on the bonding area of the outer periphery of the magnetic base.

[0018] Therefore, the rotor magnet fixing structure can be matched and fixed by the clasp of the at least one fixing petal and the plurality of magnet grooves, the stability of the fixing is directly improved by the two-end silicon steel sheet, no additional fixing member is needed, the number of components is reduced, the manufacturing precision requirement is reduced, the volume and material are reduced, the plurality of silicon steel sheets cannot be separated from the upper and lower ends of the magnetic base, the at least one fixing petal can be individually strained when the local part is subjected to uneven external force. In addition, the outer periphery of the magnetic base does not need to be perforated with any fixing member, so that the design and configuration of the plurality of magnets corresponding to the outer periphery of the magnetic base has greater flexibility. Therefore, the number of components, cost and precision requirement are reduced, the friction force that can be borne by the interface is improved, the stability of the fixing is improved, the risk of damage of any component in the rotor and rotor failure and failure is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Fig. 1 is a schematic view of a conventional rotor structure;

[0020] Figure 2 Fig. 2 is a schematic view of a three-dimensional combination of a rotor magnet fixing structure of the utility model;

[0021] Figure 3 Fig. 3 is a schematic view of a three-dimensional exploded view of a rotor magnet fixing structure of the utility model;

[0022] Figure 4 Fig. 4 is a schematic view of a three-dimensional exploded view of a rotor magnet fixing structure of the utility model;

[0023] Figure 5 is a side sectional view of the rotor magnet fixing structure of the utility model;

[0024] Figure 6 is a side sectional view of another embodiment of the rotor magnet fixing structure of the utility model;

[0025] Figure 7 is an end face silicon steel sheet front view of the rotor magnet fixing structure of the utility model;

[0026] Figure 8 is an end face silicon steel sheet front view of another embodiment of the rotor magnet fixing structure of the utility model;

[0027] Figure 9 is a silicon steel sheet front view of the rotor magnet fixing structure of the utility model.

[0028] The figure mark explanation: magnetic base body 1;Combination area 10;Silicon steel sheet 11;Extension section 111;Guide arm 12;Magnet 2;Groove 20;Inner side 20a;Outer side flange 21;Inner side edge 22;End face silicon steel sheet 3;Fixed petal 31;Buckle 311;Fastening wall 311a;Peripheral surface 311b;Shaft hole 4;Riveting hole 5. Specific implementation

[0029] The above-mentioned purpose of the utility model and its structural and functional characteristics will be described according to the preferred embodiment of the attached drawing.

[0030] Please refer to Figure 2 is a three-dimensional combination schematic view of the rotor magnet fixing structure of the utility model; Figure 3 is a three-dimensional exploded schematic view of the rotor magnet fixing structure of the utility model; Figure 4 is a three-dimensional exploded schematic view of the rotor magnet fixing structure of the utility model; Figure 5 is a side sectional view of the rotor magnet fixing structure of the utility model; Figure 6 is a side sectional view of another embodiment of the rotor magnet fixing structure of the utility model; Figure 7 is an end face silicon steel sheet front view of the rotor magnet fixing structure of the utility model; Figure 8 is an end face silicon steel sheet front view of another embodiment of the rotor magnet fixing structure of the utility model;And, Figure 9 is a silicon steel sheet front view of the rotor magnet fixing structure of the utility model.

[0031] As Figures 2 to 4As shown, the utility model provides a rotor magnet fixed structure, include: a magnetic base 1, a plurality of magnet 2 and two end surface silicon steel sheet 3. The magnetic base 1 can be made of metal (such as silicon steel), provide the magnetic effect. The plurality of magnet 2 sets up in the outer periphery of the magnetic base 1, and is fixed by the two end surface silicon steel sheet 3 respectively corresponding from the upper end surface and lower end surface of the magnetic base 1 the plurality of magnet 2.

[0032] As Figure 9 Shown, the magnetic base 1 can be by a plurality of silicon steel sheets 11 mutually superimposed along the axial direction to constitute as the magnetic flux of the rotor. For example, the plurality of silicon steel sheets 11 are consistent with the circular disc shape, so that the circular plane between every two silicon steel sheets 11 disc-shaped circular can correspond to mutually superimposed with the same outer periphery, make the plurality of silicon steel sheets 11 in the axial direction height, and then form the magnetic base 1. Therefore, the magnetic base 1 has the circular plane consistent with the plurality of silicon steel sheets 11, but the axial height is the superposition of the plurality of silicon steel sheets 11 accumulated and presents the cylindrical shape. And, at least one binding area 10 is formed on the outer periphery of the magnetic base 1.

[0033] As Figure 3 And Figure 4 Shown, the height of the plurality of magnets 2 corresponds to the height of the magnetic base 1, and the plurality of magnets 2 correspond to the binding area 10, so that the plurality of magnets 2 are arranged in the binding area 10 of the magnetic base 1. For example, the cross section of the plurality of magnets 2 can be approximately crescent-shaped, so that the outer periphery is surrounded by at least two arc-shaped side edges, has an outer flange 21 outwardly, and an inner edge 22 facing the outer periphery of the magnetic base 1 for arrangement. Wherein, the outer flange 21 protrudes outwardly and the arc curvature is greater than the inner edge 22 opposite to the outer flange 21. The arc curvature, area shape and size of each of the inner edge 22 are respectively corresponding to the binding area 10 of the magnetic base 1 to be arranged therein. And, the plurality of magnets 2 are crescent-shaped upper end surface and lower end surface respectively recessed a groove 20.

[0034] In fact, as long as the rotor can be effectively stabilized, the number of the plurality of magnets 2 and the corresponding number of the plurality of binding areas 10 are not limited by the utility model. In this embodiment, for example, eight plurality of magnets 2 can be arranged, and each magnet 2 is arranged corresponding to one binding area 10. And, preferably, it can be arranged in a symmetrical form on the outer periphery of the magnetic base 1. Even in some embodiments, the plurality of magnets 2 can be arranged closely side by side on the outer periphery of the magnetic base 1, that is, there is no gap between the plurality of binding areas 10 corresponding to the outer periphery, and the design has greater flexibility, and the utility model is not limited by this.

[0035] And please refer toFigure 5 and Figure 6 As shown in FIG. 1, the two end surface silicon steel sheets 3 are respectively arranged on the upper end surface and the lower end surface of the magnetic base 1. That is, the two end surface silicon steel sheets 3 are respectively arranged on the outermost side of the plurality of silicon steel sheets 11 stacked on the magnetic base 1. For example, the two end surface silicon steel sheets 3 can be circular disc-shaped and have a circular plane similar to the plurality of silicon steel sheets 11, so as not to occupy extra volume. However, at least one fixing lobe 31 is respectively outwardly protruded from the periphery of the two end surface silicon steel sheets 3 corresponding to the plurality of magnets 2. At this time, as shown in FIG. 2, because the height of the plurality of magnets 2 is just corresponding to the height of the magnetic base 1, the at least one fixing lobe 31 protruding will respectively correspond to and cover at least a part of the upper end surface and the lower end surface of the magnet 2. Figure 7

[0036] The at least one fixing lobe 31 does not need to completely cover the magnet 2. For example, as shown in FIG. 3, even if the area covered by the at least one fixing lobe 31 is small (for example, rectangular), as long as the upper end surface and the lower end surface of the magnet 2 with a crescent-shaped cross section are respectively axially corresponding to the at least one fixing lobe 31, the effect of clamping the magnet 2 from the top and the bottom can still be achieved. Moreover, at least a part of the at least one fixing lobe 31 is respectively axially protruded with a buckle 311 corresponding to and clamping the groove 20 on the upper end surface and the lower end surface of the magnet 2. That is, the upper and lower ends of the magnet 2 are limited by the concave-convex matching. Figures 3 to 6

[0037] Therefore, the circular plane of the two end surface silicon steel sheets 3 and the at least one fixing lobe 31 protruded therefrom can make the upper and lower end surfaces of the magnetic base 1 and the magnet 2 at least partially covered by the two end surface silicon steel sheets 3. In this way, the plurality of magnets 2 can be limited at the outer periphery of the magnetic base 1 by the concave-convex matching, so as to prevent the plurality of magnets 2 from being unexpectedly separated from any direction, and at the same time, when the plurality of magnets 2 are fixed by the at least one fixing lobe 31 of the two end surface silicon steel sheets 3, the relative positions of the plurality of magnets 2 to each other are also fixed.

[0038] At this time, the plurality of magnets 2 are positioned around the outer periphery of the magnetic base 1, so as long as the distance between any two magnets 2 is less than the diameter of the magnetic base 1, and the common shaft is pivotally arranged in the shaft hole 4, the relative distribution of the plurality of magnets 2 around the outer periphery of the magnetic base 1 can be ensured. Therefore, the present application can effectively provide the limiting position of the fixing position of the two end surface silicon steel sheets 3 by covering a small area and directly fixing the plurality of magnets 2, so as to achieve the effect of fixing the plurality of magnets 2 and the magnetic base 1 with less volume and material.

[0039] ​​Further, since each of the at least one fixing flaps 31 is respectively protruded from the outer periphery of the two end surface silicon steel sheets 3, they can be independently affected without mutual influence, and each of the fixing flaps 31 can be respectively subjected to the outward tension strain to match the buckles 311 with the grooves 20 of the plurality of magnets 2, so that the need for additional fixing elements is eliminated, the problem of difficulty in fixing due to the hard material (e.g. silicon steel) is solved, and the stability of the protrusion-recess fixing is improved by the strain tension.

[0040] In order to match the at least one fixing flaps 31 of the two end surface silicon steel sheets 3 with the buckles 311 with the grooves 20 of the upper and lower end surfaces of the plurality of magnets 2 for fixing without being separated from the upper and lower ends, the protruding length and width of the at least one fixing flaps 31 and the spacing between the buckles 311 can be designed in accordance with the toughness and rigidity of the materials of the two end surface silicon steel sheets 3 and the magnetic base 1. In this way, the fixing function with toughness is directly achieved by the at least one fixing flaps 31, and additional elements for fixing are not required. Therefore, the number of elements is reduced, the plurality of magnets 2 can be effectively fixed by the tension in the protrusion-recess matching, the plurality of silicon steel sheets 11 in the magnetic base 1 are fastened in the axial direction, and the risk of separation of the plurality of silicon steel sheets 11 from the upper and lower ends of the magnetic base 1 is solved.

[0041] In this way, the two end surface silicon steel sheets 3 also have better design flexibility for adjusting the tension, which helps the setting operation of installing the two end surface silicon steel sheets 3, and makes the buckles 311 of the at least one fixing flaps 31 more stable when corresponding to the interference and buckling of the grooves 20. For example, when each fixing flap 31 needs to be fixed by applying tension, it is less likely to be limited by the fixed position of other fixing flaps 31 that have been protrusion-recess matched to the grooves 20. Even if subjected to external force during operation in the future, the at least one fixing flaps 31 can individually strain to disperse the uneven external force locally, thereby reducing the possibility of poor fixing effect due to the rigidity of the material and causing positional separation. The stability of the fixing is further improved.

[0042] As shown in Figure 5 Further, the buckles 311 can be wedge-shaped and respectively have a fastening wall 311a that is perpendicular to the axial direction of the two end surface silicon steel sheets 3. The grooves 20 have an inner side surface 20a. At this time, the inner side surface 20a and the fastening wall 311a on the contact surface are in contact with each other by tension, so that a larger friction force can be borne on the contact surface. In particular, due to the wedge-shaped arrangement, the deeper the interference of the buckle 311, the greater the thickness of the buckle 311 buckled, and the greater the tension (friction force borne) corresponding to the interference.

[0043] Further, the buckles 311 can be wedge-shaped and respectively have a fastening wall 311a that is perpendicular to the axial direction of the two end surface silicon steel sheets 3. The grooves 20 have an inner side surface 20a. At this time, the inner side surface 20a and the fastening wall 311a on the contact surface are in contact with each other by tension, so that a larger friction force can be borne on the contact surface. In particular, due to the wedge-shaped arrangement, the deeper the interference of the buckle 311, the greater the thickness of the buckle 311 buckled, and the greater the tension (friction force borne) corresponding to the interference. Figure 6As shown, the buckle 311 can also be formed as a protrusion in a semi-cylindrical shape, so that the circumferential surface 311b of the buckle 311 corresponds to the inner side surface 20a of the semi-circular arc of the recess 20 and is in close contact with each other. At this time, in addition to being able to provide tension to the at least one fixed petal 31 to provide close contact, the radial length and volume of the buckle 311 can also be set to be sufficient to fill the volume of the recess 20, so that the buckle 311 is in close contact and holds the recess 20 after being slightly extruded or deformed (e.g. pressed). At this time, the circumferential surface 311b extruded in the recess 20 can further uniformly fit the inner side surface 20a.

[0044] In some embodiments, the magnetic base 1 and the end face silicon steel sheet 3 can be provided with the shaft hole 4 at the center, and a plurality of rivet holes 5 can also be provided along the inner periphery. The two end face silicon steel sheets 3 are also provided with the shaft hole 4 and the plurality of rivet holes 5, which correspond to the plurality of silicon steel sheets 11 and are stacked vertically, and rivets (not shown) are arranged in the plurality of rivet holes 5 to axially fasten the whole, thereby completing the assembly of the rotor magnet fixing structure of the utility model, which is compatible with the utility model.

[0045] In addition, referring to Figure 9 In some embodiments, the outer periphery of the plurality of silicon steel sheets 11 can also be respectively provided with two corresponding even extension sections 111. Referring to Figure 3 The even extension sections 111 are in groups of two. When the plurality of silicon steel sheets 11 are stacked, the magnetic base 1 is formed, and each combination area 10 is formed with an even guide arm (rib) 12 on both sides of the combination area 10. In this way, the plurality of magnets 2 arranged at the plurality of combination areas 10 can be effectively prevented from being circumferentially separated from the plurality of combination areas 10 during rotation of the rotor, because the even guide arms 12 on both sides of the plurality of combination areas 10 limit the plurality of magnets 2.

[0046] In addition, the outer periphery of the two end face silicon steel sheets 3 can also be formed with the even extension sections 111, but because the magnetic base 1 has already been formed with the even guide arms 12, the effect of limiting will not be affected even if only some of the silicon steel sheets 11 or the two end face silicon steel sheets 3 do not have the even extension sections 111, so the utility model is not limited in this regard.

[0047] In further embodiments, the even guide arms 12 can also be formed with claw portions (not shown) at the front ends to further clamp and limit the plurality of magnets 2 in the plurality of combination areas 10. Alternatively, the even guide arms 12 on both sides of the plurality of combination areas 10 can also be in the shape of a narrow mouth that is inwardly recessed towards the plurality of combination areas 10, so that the plurality of magnets 2 with a crescent cross section are limited at the left and right angles by the width of the narrow mouth, and are thus not easily separated from the plurality of combination areas 10.

[0048] In addition, in the embodiment with the even number of guide arms 12 providing the circumferential and narrow-mouthed limiting of the plurality of magnets 2, because the two sides of the even number of guide arms 12 are limited, and the at least one fixed petal 31 of the two end surface silicon steel sheets 3 respectively covers the upper end surface and the lower end surface of each magnet 2, even if any one of the plurality of magnets 2 does not have the groove 20 corresponding to the buckle 311 interfering and buckling, the upper and lower fastening while the plurality of magnets 2 cannot be separated can still be achieved. However, the two end surface silicon steel sheets 3 still need to be correspondingly fixed between the upper end surface and the lower end surface of the plurality of magnets 2, so at least part of the at least one fixed petal 31 and part of the plurality of magnets 2 need to be correspondingly concave-convex matched, and the buckle 311 and the groove 20 need to be provided for fixation.

[0049] At this time, the number of the plurality of magnets 2 with the groove 20 is at least greater than two, and the number of the at least one fixed petal 31 of the two end surface silicon steel sheets 3 with the buckle 311 is also correspondingly greater than two. For example, more than three. The rest do not need to be concave-convex matched. Thus, because the even number of guide arms 12 with narrow mouths are matched, the rest of the at least one fixed petal 31 even without the buckle 311 can limit the plurality of magnets 2 in the plurality of combined areas 10 from being separated.

[0050] For example, as shown in Figure 8 When the plurality of magnets 2 are eight, the even number of guide arms 12 with inward contraction and the two end surface silicon steel sheets 3 can only have four of the plurality of magnets 2 with the groove 20, and as long as four of the eight fixed petals 31 of each end surface silicon steel sheet 3 have the buckle 311, the plurality of magnets 2 can be fixed. In order to stably fix and evenly distribute the fastening tension, the plurality of magnets 2 with the groove 20 can be symmetrically arranged at the combined area 10 of the outer periphery of the magnetic base body 1. That is, as shown in Figure 8 In a spaced arrangement along the circumferential direction of the two end surface silicon steel sheets 3.

[0051] Therefore, the rotor magnet fixing structure of the utility model can cooperate with the plurality of silicon steel sheets 11 to complete the two end face silicon steel sheets 3 by protruding the at least one fixing lobe 31, thereby reducing the number of components, reducing the volume and material used, reducing manufacturing costs, and effectively providing the fixing effect of the plurality of magnets 2 relative to the magnetic base 1. In addition, each fixing lobe 31 protrudes from the outer edge of the two end face silicon steel sheets 3, stably provides fixed tension without affecting each other, can also disperse the uneven external force received locally, and improves the stability of the fixing. Furthermore, the at least one fixing lobe 31 does not occupy the space of the outer edge of the magnetic base 1, so that the plurality of magnets 2 can be more flexibly arranged. In addition, the at least one fixing lobe 31 of the utility model further adjusts in cooperation with the even number of guide arms 12, so that even if part of the concave-convex cooperation is omitted, stable fixing can still be achieved.

[0052] In summary, the plurality of magnets 2 only need to be respectively provided with the recess 20 corresponding to the buckle 311 on the upper end face and the lower end face, so as to provide stable limiting of the plurality of magnets 2 relative to the plurality of combination areas 10. In this way, the problems of high precision requirements for manufacturing through holes and limited design flexibility when additional fixing members are provided in the prior art are solved. At the same time, the utility model reduces the number of components, cost and precision requirements, improves the friction that the interface can withstand, improves the stability of the fixing, reduces the risk of damage caused by unexpected separation of any components in the rotor, and reduces the risk of rotor failure and failure.

[0053] The above has described the utility model in detail, and the above is only a preferred embodiment of the utility model, and should not limit the scope of the utility model. Any equivalent changes and modifications made according to the utility model should still belong to the patent coverage of the utility model.

Claims

1. A rotor magnet fixing structure, characterized in that, The application relates to a magnetic base, comprising: a magnetic base formed by a plurality of silicon steel sheets arranged in an axial direction; a plurality of magnets corresponding to the height of the magnetic base, having an outer flange and an inner edge opposite to the outer flange, the plurality of magnets are arranged in the coupling area of the outer edge of the magnetic base with the inner edge, and the upper end surface and the lower end surface of at least part of the plurality of magnets are respectively provided with a groove; and two end surface silicon steel sheets arranged on the upper end surface and the lower end surface of the magnetic base, the peripheral edge of the two end surface silicon steel sheets corresponds to the plurality of magnets and is respectively provided with at least one fixing lobe, the at least one fixing lobe covers the upper end surface and the lower end surface of the plurality of magnets, and at least part of the at least one fixing lobe is respectively provided with a buckle in the axial direction, the buckle corresponds to and holds the groove of the upper end surface and the lower end surface of the plurality of magnets.

2. The rotor magnet fixing structure according to claim 1, characterized by: The buckle is formed in a wedge type and has an inward fastening wall, and the fastening wall corresponds to and is forced with an inner side surface of the groove.

3. The rotor magnet fixing structure according to claim 1, wherein: The buckle is formed in a semi-cylindrical type, and a peripheral surface of the buckle corresponds to and is forced with an inner side surface of the groove.

4. The rotor magnet fixing structure according to claim 1, wherein: The peripheral edge of the plurality of silicon steel sheets is respectively provided with corresponding even extension sections, the extension sections of the plurality of silicon steel sheets are arranged in the axial direction, and even guide arms are formed on both sides of the coupling area of the magnetic base.

5. The rotor magnet fixing structure according to claim 4, characterized by: The number of the plurality of magnets provided with the groove is greater than two, and the number of the at least one fixing lobe of the two end surface silicon steel sheets provided with the buckle is greater than two.

6. The rotor magnet fixing structure according to claim 5, wherein: The plurality of magnets provided with the groove are symmetrically arranged in the coupling area of the outer edge of the magnetic base.

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