Stator and motor

Abstract

The invention provides a stator, which comprises a stator core and an insulating part, the stator core comprises a stator yoke part and a stator tooth part, the insulating part comprises a first insulating part, the first insulating part covers at least part of the surface of the stator tooth part, the stator tooth part comprises a connecting section extending along the radial direction of the stator core, and the connecting section comprises a side wall, the side walls of the adjacent stator tooth parts are oppositely arranged, the first insulation part comprises a first insulation section, the first insulation section wraps the outer surface of the side wall, the first insulation section is provided with a notch, and at least part of the notch is located in the surface of the first insulation section. The invention further provides a motor, the motor comprises the block iron core, the block iron core comprises a block tooth part, the block tooth part comprises a connecting section, a first insulating section wrapping the outer surface of the side wall of the connecting section is provided with a notch, the average thickness of the insulating part located at the stator tooth part is increased through the arrangement of the notch, the forming speed of the insulating material at the stator tooth part is increased, and the service life of the motor is prolonged. And the probability of insufficient glue of the insulating part is reduced, so that the phenomenon of poor voltage resistance is reduced.

Description

Technical Field

[0001] This application relates to the technical field of motors, and particularly to a stator and a motor. Background Art

[0002] The stator includes a stator core and an insulating skeleton. The insulating skeleton wraps part of the surface of the stator core. The stator core includes a stator yoke and stator teeth. In the related art, when the insulating skeleton is formed on the stator core, considering the slot fill factor of winding, the insulating layer of the stator teeth located in the slot cannot be too thick. However, simply increasing the winding space that can be accommodated in the slot will result in the insulating layer of the stator teeth being too thin. In this way, the mold channel of the insulating layer of the stator teeth will be too narrow, reducing the forming speed of the insulating material on the stator teeth. During the later stage of injection molding, there will be a phenomenon of insufficient glue in the insulating layer of the stator core teeth, and then a phenomenon of poor withstand voltage will occur. Summary of the Invention

[0003] The purpose of this application is to provide a stator that reduces the phenomenon of poor withstand voltage.

[0004] This application provides a stator, which includes a stator core and an insulating member. The stator core includes a stator yoke and stator teeth. The stator yoke is located in the circumferential direction of the stator core, and the stator teeth extend towards the center direction of the stator. The insulating member includes a first insulating portion, and the first insulating portion covers at least part of the surface of the stator teeth. The stator teeth include a connecting section extending along the radial direction of the stator core. The connecting section includes a side wall, and the side walls of adjacent stator teeth are arranged opposite to each other. The first insulating portion includes a first insulating section, and the first insulating section wraps the outer surface of the side wall. The first insulating section has a notch, and at least part of the notch is located on the surface of the first insulating section.

[0005] By wrapping the side wall of the connecting section of the stator teeth with the first insulating section, and the first insulating section has a notch. The setting of the notch increases the average thickness of the insulating member located on the stator teeth, improves the forming speed of the insulating member on the stator teeth, reduces the probability of insufficient glue in the insulating member, and further reduces the occurrence of the phenomenon of poor withstand voltage.

[0006] Another purpose of this application is to provide a motor that reduces the phenomenon of poor withstand voltage.

[0007] The present application provides a motor, which includes a stator and a rotor. The stator includes a segmented iron core and an insulating member. The segmented iron core includes a segmented yoke portion and a segmented tooth portion. The segmented iron core is distributed around the rotation axis of the rotor, and the segmented iron cores are arranged in a circumferential enclosure. The segmented tooth portion extends from the segmented yoke portion towards the interior of the stator. The insulating member includes a first insulating portion. The segmented tooth portion includes a connecting section extending in the radial direction of the segmented iron core. The connecting section includes a side wall. The side walls of adjacent segmented tooth portions are arranged opposite to each other. The first insulating portion includes a first insulating section. The first insulating section wraps the outer surface of the side wall. The first insulating section has a notch, and at least part of the notch is located on the surface of the first insulating section.

[0008] The stator of the motor includes a segmented iron core and an insulating member. The segmented iron core is distributed around the rotation axis of the rotor, and the segmented iron cores are arranged in a circumferential enclosure. The segmented iron core includes a segmented yoke portion and a segmented tooth portion. The first insulating section with a notch is wrapped on the outer surface of the side wall of the segmented tooth portion. The setting of the notch increases the average thickness of the insulating member located at the segmented tooth portion, improves the forming speed of the insulating member at the segmented tooth portion, reduces the probability of insufficient glue in the insulating member, and further reduces the occurrence of poor withstand voltage phenomenon. Brief Description of the Drawings

[0009] Figure 1 is a schematic structural diagram of the stator of the present application from an angle;

[0010] Figure 2 is a schematic cross-sectional diagram of the stator of the present application;

[0011] Figure 3 is a schematic structural diagram of the insulating member of the present application from an angle;

[0012] Figure 4 is a schematic structural diagram of the insulating member of the present application from another angle;

[0013] Figure 5 is a schematic structural diagram of the segmented iron core of the present application;

[0014] Figure 6 is a schematic structural diagram of the stator of the present application from another angle;

[0015] Figure 7 is Figure 6 an enlarged schematic diagram of part A in

[0016] Figure 8 is an exploded schematic diagram of the segmented iron core in the stator;

[0017] Figure 9 is a schematic diagram of a product with the motor of the present application. Detailed Description of the Embodiment

[0018] To better understand the technical solution of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0019] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0020] As Figures 1-8 shown, the present application provides a stator 10, including a stator core 1 and an insulating member 2. The stator core 1 includes a stator yoke portion 11 and a stator tooth portion 12. The stator yoke portion 11 is located in the circumferential direction of the stator core 1, and the stator tooth portion 12 extends toward the center direction of the stator 10. The stator tooth portion 12 and the stator yoke portion 11 are arranged in a substantially T shape. The insulating member 2 includes a first insulating portion 212, and the first insulating portion 212 covers at least part of the surface of the stator tooth portion 12. The stator tooth portion 12 includes a connecting section 125 extending in the radial direction of the stator core 1. The connecting section 125 includes a side wall 1251. The side walls 1251 of adjacent stator tooth portions 12 are arranged opposite to each other. The first insulating portion 212 includes a first insulating section 2121, and the first insulating section 2121 wraps the outer surface of the side wall 1251. The first insulating section 2121 has a notch, and the notch is at least partially located on the surface of the first insulating section 2121.

[0021] A first insulating section with notches is provided on the side wall of the connecting section of the stator tooth portion. The setting of the notches minimizes the space occupied by the insulating member located in the stator tooth portion in the slot, while increasing the average thickness of the insulating member located in the stator tooth portion, improving the forming speed of the insulating material in the stator tooth portion, reducing the probability of insufficient glue in the insulating member, and thus reducing the occurrence of poor withstand voltage. In this application, the insulating layer covering the outer side wall 1251 of the connecting section 125 of the stator tooth portion 12 is defined as the first insulating section 2121, and the surface of the first insulating section 2121 is provided with notches. The first insulating section 2121 can be provided with only one notch, or the first insulating section can be provided with multiple notches. Multiple notches make the outer surface of the first insulating section form a wavy shape. The wavy outer surface, while increasing the average thickness of the insulating layer of the stator tooth portion, can also match the contour of the winding. Thus, compared with the solution of simply thickening the insulating layer of this part with a uniform thickness, it can also minimize the space occupation ratio of the insulating member in the slot and improve the slot filling rate. The width here refers to the distance between the first insulating section 2121 and the outer surface of the connecting section 125 of the stator tooth portion located inside it. Since the insulating member is formed on the stator core in a plastic-coated form, during the plastic coating process of the stator core, due to the path width of the mold for forming the insulating structure being too narrow and the injection time being too long, insufficient glue may occur in the latter half of the injection, that is, the insulating section far from the stator yoke portion. However, the first insulating section with a wavy structure widens the average width of the insulating section at this position. At this time, the path of the mold for forming the insulating structure becomes wider and the injection time is reduced, avoiding the occurrence of insufficient glue in the latter half of the injection. In this application, the first insulating section 2121 has at least two notches, the two notches are located on the surface of the first insulating section 2121, and at least part of the first insulating section 2121 is wavy.

[0022] Among them, the stator core can be composed of multiple segmented cores 102. The segmented cores 102 are distributed around the axis of the stator 10, and the segmented cores 102 are arranged in a circumferential enclosure. Here, the segmented cores 102 can be directly spliced to form the stator core, and can be welded together in a welding form to form an annular stator core. Such as Figure 5As shown, the segmented iron core 102 includes a segmented yoke portion 1021 and segmented tooth portions. The segmented tooth portions extend from the segmented yoke portion 1021 toward the inside of the stator 10. Splicing protrusions 10211 and splicing grooves 10212 are provided at opposite ends of the segmented yoke portion 1021. In this application, the splicing protrusions 10211 and splicing grooves 10212 of two segmented iron cores 102 are spliced with each other, and thus the two segmented iron cores 102 are spliced into an annular stator core. The segmented tooth portions are connected to the segmented yoke portion 1021, and the segmented tooth portions and the segmented yoke portion 1021 are designed in a T shape. The segmented tooth portions include free ends 124 arranged away from the segmented yoke portion 1021 and connecting segments 125 connecting the free ends 124 and the segmented yoke portion 1021. The free ends 124 protrude outward in a direction away from the connecting segments 125. In this application, the stator core is formed by splicing segmented iron cores. The segmented yoke portions 1021 enclose the stator yoke portion 11, and the segmented tooth portions are the stator tooth portions 12. Preferably, the insulating members located on both axial sides of the stator core are first formed on the segmented iron cores respectively, and then the segmented iron cores formed with the insulating members are spliced into the stator core.

[0023] The stator 10 further includes a winding 4. The stator core 1 is arranged in an annular shape. The stator yoke portion 11 is connected to the stator tooth portions 12. The stator 10 has a wire groove 101. The wire groove 101 is located between adjacent stator tooth portions 12. The insulating members 2 are arranged along the circumferential direction of the stator 10, and the insulating members 2 cover at least part of the surface of the stator 10.

[0024] As Figures 2-4 shown, the stator core 1 is in an annular shape. The insulating members 2 and the stator core 1 are arranged along the axial direction of the stator 10. The insulating members 2 are distributed on both axial sides of the stator 10. The first insulating segment 2121 extends along the axial direction of the stator 10. The first insulating segment 2121 includes a butt wall 21211. The butt wall 21211 extends along the radial direction of the stator 10. The first insulating segments 2121 of the insulating members 2 located on both axial sides of the stator 10 are arranged in butt joint, and at least part of the butt walls 21211 of the first insulating segments 2121 located on both axial sides of the stator 10 are in contact with each other.

[0025] As Figure 2As shown, the stator tooth portion 12 includes a first tooth portion surface 121, a second tooth portion surface, a third tooth portion surface 122, a fourth tooth portion surface, and a fifth tooth portion surface 123. The first tooth portion surface 121, the second tooth portion surface, the third tooth portion surface, and the fourth tooth portion surface are the outer surfaces of the connecting segment 125, and the fifth tooth portion surface is the outer surface of the free end 124. Among them, the fifth tooth portion surface 123 faces the rotor. Therefore, in this application, the insulating member 2 does not cover the fifth tooth portion surface 123, that is, the fifth tooth portion surface 123 is an exposed surface. The first tooth portion surface 121 extends along the radial direction of the stator 10. The first tooth portion surface 121 and the second tooth portion surface are axially opposite to each other. The third tooth portion surface 122 extends along the axial direction of the stator 10. The third tooth portion surface 122 and the fourth tooth portion surface are radially opposite to each other. The fifth tooth portion surface 123 extends along the axial direction of the stator 10. The fifth tooth portion surface 123 connects the first tooth portion surface 121, the second tooth portion surface, the third tooth portion surface 122, and the fourth tooth portion surface, and the fifth tooth portion surface 123 is located at one end of the stator tooth portion 12 away from the stator yoke portion 11. Among them, the third tooth portion surface 122 and the fourth tooth portion surface are the outer surfaces of the side wall 1251.

[0026] The first insulating portion 212 includes a second insulating segment 2123. The second insulating segment 2123 is connected to the first insulating segment 2121. The second insulating segment 2123 extends along the axial direction of the stator core 1. The stator tooth portion 12 includes a free end 124. The free end 124 is arranged away from the stator yoke portion 11. The free end 124 is connected to the connecting segment 125. The second insulating segment 2123 covers a part of the surface of the free end 124. The second insulating segment 2123 includes a first extending wall 21231 and a second extending wall 21232 connected to the first extending wall 21231. The first extending wall 21231 extends outward in a direction away from the first insulating segment 2121, and the second extending wall 21232 extends outward in a direction away from the first extending wall 21231. Here, the second insulating segment 2123 covers a part of the surface of the free end 124 because the fifth tooth portion surface 123 is a surface facing the rotor. In this application, the fifth tooth portion surface 123 is an exposed surface, and there is no insulating layer covering its outside.

[0027] The stator 10 further has a notch 104 and a leakage port 103. The notch 104 is located between the free ends 124 of adjacent stator tooth portions 12, and the leakage port 103 is located between the second extension walls 21231 of adjacent insulating members 2. The pitch of the leakage port 103 is smaller than the pitch of the notch 104. Here, the pitch between the second extension walls 21231 of adjacent insulating members 2 at the free ends 124 is smaller than the pitch between the free ends 124 of adjacent insulating members 2. In this way, the insulating member 2 at the free end 124 can isolate the winding in the wire groove 101 from contacting the stator as comprehensively as possible. At the same time, the setting of the leakage port 103 is also used to avoid interference between the second extension walls 21231 of adjacent insulating members 2. Since in this application, the form of separately wrapping insulating members on the segmented iron cores is adopted, and then the segmented iron cores formed with insulating members are enclosed to form a stator core, the setting of the leakage port is essential. And the notch is formed between the segmented tooth portions of the segmented iron cores mainly because if the segmented tooth portions of adjacent segmented iron cores are connected together, a serious magnetic leakage phenomenon will occur. Therefore, in order to prevent serious magnetic leakage, notches are provided between the segmented iron cores.

[0028] The insulating member 2 further includes a second insulating portion 211. The second insulating portion 211 is arranged along the distribution direction of the stator yoke portion 11. The second insulating portion 211 covers at least part of the surface of the stator yoke portion 11. The second insulating portion 211 includes a third insulating segment 2111. The third insulating segment 2111 is connected to the first insulating segment 2121. The third insulating segment 2111 extends along the axial direction of the stator core 1, and the third insulating segment 2111 protrudes outward in a direction away from the first insulating segment 2121. The stator has a winding area, and at least part of the winding area is located between the second insulating segment 2123 and the third insulating segment 2111.

[0029] The second insulating portion 211 further includes a fourth insulating segment 2112. The fourth insulating segment 2112 is respectively connected to the third insulating segment 2111 and the first insulating segment 2121. The fourth insulating segment 2112 extends along the axial direction of the stator core 1, and the fourth insulating segment 2112 extends in a direction away from the third insulating segment 2111. The fourth insulating segment 2112 at least partially covers the inner surface of the stator yoke portion 11. The insulating member 2 includes a docking portion 22. The docking portion 22 is located at one end of the fourth insulating segment 2112 away from the first insulating segment 2121. In the radial direction of the stator 10, at least part of the docking portions 22 of adjacent insulating members 2 overlap.

[0030] As Figures 3-8As shown, the insulating member 2 includes an insulating body 21. The insulating body 21 includes a first insulating portion 212 and a second insulating portion 211. The second insulating portion 211 is connected to the first insulating portion 212. The second insulating portion 211 is arranged along the distribution direction of the stator yoke portion 11, and the second insulating portion 211 covers at least part of the surface of the stator yoke portion 11. The first insulating portion 212 is arranged along the distribution direction of the stator tooth portion 12, and the first insulating portion 212 covers at least part of the surface of the stator tooth portion 12. In this application, the insulating member 2 includes an insulating body 21 and a docking portion 22 that protrudes at least partially from the insulating body 21, and the docking portion 22 is connected to the insulating body 21. The insulating body 21 includes a second insulating portion 211 and a first insulating portion 212. The second insulating portion 211 is arranged along the distribution direction of the stator yoke portion 11, and the first insulating portion 212 is arranged along the distribution direction of the stator tooth portion 12. The second insulating portion 211 covers all or part of the surface of the stator yoke portion 11, and the first insulating portion 212 covers all or part of the surface of the stator tooth portion 12.

[0031] Specifically, the first insulating portion 212 includes a first insulating segment 2121, a second insulating segment 2123, and a fifth insulating segment 2122. The first insulating segment 2121 is connected to the fifth insulating segment 2122. The first insulating segment 2121 covers the third tooth surface 122 and the fourth tooth surface of the stator tooth portion 12. The fifth insulating segment 2122 covers the first tooth surface 121 and the second tooth surface of the stator tooth portion 12. The second insulating segment 2123 covers a part of the surface of the free end 124 of the stator tooth portion 12. There are two first insulating segments 2121, and the two first insulating segments 2121 are respectively connected to both sides of the fifth insulating segment 2122. The second insulating segment 2123 is connected to the side of the fifth insulating segment 2122 away from the stator yoke portion 11.

[0032] The second insulating segment 2123 includes a first extension wall 21231 and a second extension wall 21232 connected to the first extension wall 21231. The first extension wall 21231 extends outward in a direction away from the first insulating segment 2121, and the second extension wall 21232 extends outward in a direction away from the first extension wall 21231. Specifically, the extending direction of the first extension wall 21231 is the same as the protruding direction of the third insulating segment 2111, and the extending direction of the second extension wall 21232 is the same as the protruding direction of the fourth insulating portion 2112. The first insulating segment 2121 is connected to the second extension wall 21231 and the fourth insulating segment 2112.

[0033] An accommodating cavity is formed between the first insulating segment 2121 and the fifth insulating segment 2122 which are arranged opposite to each other. The first insulating portion 212 also has an opening 2124 connected to the accommodating cavity. The second extending wall 21232 is located on both sides of the opening 2124. The stator tooth 12 is at least partially located in the accommodating cavity. The fifth tooth surface 123 of the stator tooth 12 is exposed from the opening 2124. The first extending wall 21231 and the free end 124 of the stator tooth 12 are arranged radially. The outer contour of the second insulating segment 2123 matches the shape of the free end 124 of the stator tooth 12. The insulating part 2 is connected to each other in the axial direction of the stator core 1. The first insulating segment 2121 and the fifth insulating segment 2122 wrap the outer surface of the connecting segment 125 of the stator tooth 12. The first insulating segment 2121 and the relatively arranged fifth insulating segment 2122 form a connecting segment insulation layer for the connecting segment 125 of the stator tooth 12. The winding 4 is wound around the stator tooth 12 on the outside of this connecting segment insulation layer. The protruding first extension wall 21231 and the third insulating segment 2111 form a partial winding area of the winding 4. The first insulating segment 2121 is wrapped around the outer surface 1251 of the side wall 125 of the stator tooth 12, and at least part of the surface of the first insulating segment 2121 is wavy. In the present application, the outer surface of the first insulating segment 2121 is wavy. Since the first insulating segment 212 is completely wrapped around the side wall 1251 of the connecting segment 125 of the stator tooth 12, and the outer surface of the first insulating segment 2121 is wavy, the average thickness of the insulating layer located at the stator tooth 12 in the slot 101 is ensured, and the phenomenon of insufficient glue during the injection molding process is avoided to prevent the problem of poor withstand voltage. At the same time, the wavy design can also be adapted to the outer contour of the winding 4. On the basis of ensuring the thickness of the insulating layer, the proportion of the insulating layer in the slot is reduced as much as possible, thereby improving the slot fill rate.

[0034] The first insulating segment 2121 covers the longitudinally extending left and right surfaces of the stator tooth 12 , the fifth insulating segment 2122 covers the transversely extending upper and lower surfaces of the stator tooth 12 , and the second insulating segment 2123 covers a portion of the free end 124 of the stator tooth 12 .

[0035] The stator yoke 11 includes a first yoke surface 111, a second yoke surface, a third yoke surface 112 and a fourth yoke surface 113. The first yoke surface 111 and the second yoke surface are axially opposite to each other. The third yoke surface 112 and the fourth yoke surface 113 connect the first yoke surface 111 and the second yoke surface respectively. The fourth yoke surface 113 and the third yoke surface 112 are radially opposite to each other. The third yoke surface 112 is located on the outer circumferential surface of the stator yoke 11, and the fourth yoke surface 113 is located on the inner circumferential surface of the stator yoke 11.

[0036] Specifically, the second insulating portion 211 covers the first yoke surface 111, the second yoke surface, and the fourth yoke surface 113, and the first insulating portion 212 covers the first tooth surface 121, the second tooth surface, the third tooth surface 122, and the fourth tooth surface. The second insulating portion 211 includes a third insulating segment 2111 and a fourth insulating segment 2112. The third insulating segment 2111 is connected to the fourth insulating segment 2112, and the fourth insulating segment 2112 protrudes outward in a direction away from the third insulating segment 2111. It can be understood that the third insulating segment 2111 and the fourth insulating segment 2112 protrude in opposite directions along the thickness of the insulating member 2. There are two fourth insulating segments 2112, and the two fourth insulating segments 2112 on each insulating member 2 are arranged oppositely and extend toward the adjacent insulating member 2 respectively. In this application, the fourth yoke surface 113 and the third tooth surface 122 are located in the wire groove 101, and the insulating member 2 covers at least the first yoke surface 111, the second yoke surface, the fourth yoke surface 113, the first tooth surface 121, the second tooth surface, the third tooth surface 122, and the fourth tooth surface.

[0037] When the insulating member 2 is disposed on the stator 10, the third insulating segment 2111 covers the upper and lower two surfaces of the stator yoke 11 extending transversely, and the fourth insulating segment 2112 covers the inner surface of the stator yoke 11 extending longitudinally. Since the insulating members 2 are butt-jointed on both axial sides of the stator 10, the third insulating segment 2111 covers the first yoke surface 111 and the second yoke surface of the stator yoke 11, and the fourth insulating segment 2112 is at least partially inserted into the wire groove 101. The fourth insulating segments 2112 of the axially butt-jointed insulating members 2 cover the fourth yoke surface 113 of the stator yoke 11. In this application, the fourth insulating segment 2112 wraps the fourth yoke surface 113 of the stator yoke 11. Wherein, the insulating member 2 and the stator core 1 are arranged axially, and the insulating member 2 is distributed on both axial sides of the stator 10. That is, when the insulating member 2 is disposed on both axial sides of the stator 10, the third insulating segment 2111 of the insulating body 21 covers the upper and lower two surfaces of the stator yoke 11 extending transversely, the fourth insulating segment 2112 of the insulating body 21 covers the inner surface of the stator yoke 11 extending longitudinally, and the fourth insulating segment 2112 is located in the wire groove 101. Wherein, in this application, the fourth insulating segment 2112 completely wraps the fourth yoke surface 113 of the stator yoke 11. Of course, the fourth insulating segment 2112 can also wrap most of the fourth yoke surface 113 of the stator yoke 11. The complete wrapping of the fourth insulating segment 2112 on the fourth yoke surface 113 can further prevent the winding in the wire groove 101 from contacting the stator and reduce the probability of poor withstand voltage.

[0038] The insulating member 2 includes a butt joint portion 22, the butt joint portion 22 is located at one end of the fourth insulating section 2112 away from the first insulating section 2121, and in the radial direction of the stator 10, at least part of the butt joint portions 22 of adjacent insulating members 2 overlap.

[0039] In the present application, at least part of the butt joint portion 22 is located in the wire groove 101. In the radial direction of the stator 10, at least part of the butt joint portions 22 of adjacent insulating members 2 overlap, and at least part of the butt joint portion 22 covers the stator yoke portion 11. By arranging at least part of the butt joint portion 22 of the insulating member 2 in the wire groove 101 and ensuring that in the radial direction of the stator 10, the butt joint portions 22 of adjacent insulating members 2 overlap, there will be at least two layers of butt joint portions 22 between the wire groove 101 and the stator yoke portion 11, further reducing the probability that the winding located in the wire groove 101 contacts the stator 10, increasing the creepage distance, and reducing the risk of poor withstand voltage. In addition, covering at least part of the stator yoke portion 11 with the butt joint portion 22 can also reduce the probability that the winding contacts the stator 10 and reduce the risk of poor withstand voltage.

[0040] Specifically, the butt joint portion 22 is connected to the fourth insulating section 2112. The butt joint portion 22 includes a first butt joint end 221 and a second butt joint end 222. The first butt joint end 221 and the second butt joint end 222 of the butt joint portion 22 are respectively arranged corresponding to two fourth insulating sections 2112 of the second insulating portion 211. The first butt joint end 221 includes a first rib 2211, a first side wall 2212, and a third side wall 2213. The first rib 2211 protrudes from the first side wall 2212 in a direction away from the insulating body 21. The first rib 2211 and the first side wall are arranged in the radial direction. The third side wall 2213 is located on the side of the first rib 2211 close to the stator yoke portion 11. The second butt joint end 222 includes a second rib 2221 and a second side wall 2222. The second rib 2221 protrudes from the second side wall 2222 in a direction away from the insulating body 21. The second rib 2221 and the second side wall 2222 are arranged in the radial direction. Both the first side wall 2212 and the third side wall 2213 are located on the side of the fourth insulating section 2112 facing the adjacent insulating member 2. The first rib 2211 is located between the first side wall 2212 and the third side wall 2213. The third side wall 2213 is close to the third insulating section 2111, and the first side wall 2112 is far from the third insulating section 2111. Among them, combined Figure 6 、 Figure 7 As shown, the butt joint portion 22 has a first gap 223 and a second gap 224. The first gap 223 is located between the first rib 2211 and the second side wall 2222, and the second gap 224 is located between the second rib 2221 and the first side wall 2212.

[0041] The difference between the first docking end 221 and the second docking section 222 is that there is also a third side wall 2213 between the first rib 2211 of the first docking end 221 and the third insulating section 2111. The setting of the third side wall 2213 results in a gap between the first rib 2211 and the stator yoke 11. It can be understood here that, due to the setting of the second side wall 2222 in the second docking end 222, there is already a gap between the second rib 2221 and the stator yoke 11. To ensure the perfect splicing of the first docking end 221 and the second docking end 222 when they are spliced together, that is, to ensure that the first rib 2211 in the first docking end 221 is located in the groove formed between the second side wall 2222 and the second rib 2221 in the second docking end 222, and the second rib 2221 in the second docking end 222 is located in the groove formed between the first side wall 2211 and the first rib 2211 in the first docking end 221, the present application provides a third side wall 2213 between the first rib 2211 of the first splicing end 221 and the stator yoke 11. In this way, when the docking parts 22 of the insulating part 2 are spliced together, it is ensured that in the radial direction of the stator, at least part of the docking parts 22 overlap, so as to increase the creepage distance and reduce the contact probability between the winding and the stator.

[0042] In the present application, the docking part 22 is realized in the form of concave-convex splicing. Among them, when the docking parts 22 of adjacent insulating parts 2 are spliced together, there is a first gap 223 between the first rib 2211 of the first docking end 221 and the second side wall 2222 of the second docking end 222, and there is a second gap 224 between the second rib 2221 of the second docking end 222 and the first side wall 2211 of the first docking end 221. The settings of the first gap 223 and the second gap 224 are used to prevent assembly interference during the splicing process of the insulating part 2. Combined Figure 7 As shown, although there are the first gap 223 and the second gap 224 in the present application, when the first docking end 221 and the second docking end 222 of the docking part 22 are spliced together, in the radial direction of the stator, there is an overlapping part between the first rib 2211 and the second rib 2221. The settings of the first gap 223 and the second gap 224 will not expose the stator yoke 11 to the wire groove 101, and the docking part 22 can still play a role in shielding the stator yoke 11.

[0043] Specifically, the stator 10 has a first channel 13 located between the docking portion 22 and the stator yoke portion 11. In this application, since the first docking end 221 includes a third side wall 2213 located between the first rib 2211 and the stator yoke portion 11, and the third side wall 2213 extends along the radial direction of the stator 10, in this way, the third side wall 2213 creates a gap between the first rib 2211 and the stator yoke portion 11, and this gap is the first channel 13. The setting of the first channel 13 serves as a glue overflow prevention function. This is because the insulating member 2 is mostly made of plastic material, and when the insulating member 2 is formed on the stator core 1, it generally adopts a plastic coating form. The channel type setting similar to the first channel 13 is used to prevent plastic from overflowing.

[0044] Among them, the insulating member 2 in this application is made of an insulating material, preferably plastic, and the stator core is made of a metal material. As for the forming process of the insulating member 2 on the stator, this application does not make any limitations.

[0045] This application also provides a motor, including a stator 10 and a rotor 3. The stator 10 includes a plurality of segmented iron cores 102 and a plurality of insulating members 2. The segmented iron core 102 includes a segmented yoke portion 1021 and a segmented tooth portion. The segmented iron cores 102 are distributed around the rotation axis of the rotor 3, and the segmented iron cores 102 are arranged in a circumferential enclosure. The segmented tooth portion extends from the segmented yoke portion 1021 towards the inside of the stator 10. The insulating member 2 includes a first insulating portion 212. The segmented tooth portion includes a connecting section 125 extending along the radial direction of the segmented iron core 1. The connecting section 125 includes a side wall 1251. The side walls 1251 of adjacent segmented tooth portions are arranged opposite to each other. The first insulating portion 212 includes a first insulating section 2121. The first insulating section 2121 wraps the outer surface of the side wall 1251. The first insulating section 2121 has a notch, and the notch is at least partially located on the surface of the first insulating section 2121.

[0046] The first insulating section 2121 has at least two notches located on the surface of the first insulating section 2121, and at least part of the surface of the first insulating section 2121 is wavy. It should be noted here that several in this application means more than two.

[0047] Figure 9 For the product schematic diagrams of the stator and the motor provided by this application, the stator and the motor provided by this application can be applied to any product that requires a motor, including but not limited to products such as water pumps, compressors, actuators, brakes, and drivers.

[0048] The above embodiments are only used to illustrate the present application and do not limit the technical solutions described in the present application. The understanding of this specification should be based on those skilled in the art. For example, the directional descriptions such as "front", "rear", "left", "right", "up", and "down" are only used to describe the relationship between objects and are not substantive limitations. "Multiple" means at least two or more.

[0049] Although this specification has described the present application in detail with reference to the above embodiments, those of ordinary skill in the art should understand that those skilled in the art can still modify or equivalently replace the present application, and all technical solutions and their improvements that do not depart from the spirit and scope of the present application should be covered within the scope of the claims of the present application.

Claims

1. A stator, characterized in that, It includes a stator core (1) and an insulating member (2). The stator core (1) includes a stator yoke portion (11) and stator tooth portions (12). The stator yoke portion (11) is located in the circumferential direction of the stator core (1), and the stator tooth portions (12) extend towards the center direction of the stator (10). The insulating member (2) includes a first insulating portion (212), and the first insulating portion (212) covers at least part of the surface of the stator tooth portions (12). The stator tooth portions (12) include connecting segments (125) extending along the radial direction of the stator core (1). The connecting segments (125) include side walls (1251), and the side walls (1251) of adjacent stator tooth portions (12) are arranged opposite to each other. The first insulating portion (212) includes a first insulating segment (2121), and the first insulating segment (2121) wraps the outer surface of the side walls (1251). The first insulating segment (2121) has a notch, and the notch is at least partially located on the surface of the first insulating segment (2121).

2. The stator according to claim 1, wherein The insulating member (2) and the stator core (1) are arranged along the axial direction of the stator (10), and the insulating member (2) is distributed on both axial sides of the stator (10).

3. The stator according to claim 2, characterized in that, The first insulating segment (2121) extends along the axial direction of the stator (10). The first insulating segment (2121) includes a butt wall (21211), and the butt wall (21211) extends along the radial direction of the stator (10). The first insulating segments (2121) of the insulating members (2) on both axial sides of the stator (10) are butt-jointed, and at least part of the butt walls (21211) of the first insulating segments (2121) on both axial sides of the stator (10) are in contact with each other.

4. The stator according to any one of claims 1-3, characterized in that The first insulating segment (2121) has at least two notches, and the two notches are located on the surface of the first insulating segment (2121). At least part of the surface of the first insulating segment (2121) is wavy.

5. The stator according to any one of claims 1-3, characterized in that, The first insulating portion (212) includes a second insulating segment (2123). The second insulating segment (2123) is connected to the first insulating segment (2121), and the second insulating segment (2123) extends along the axial direction of the stator core (1). The stator tooth portions (12) include free ends (124), and the free ends (124) are arranged away from the stator yoke portion (11). The free ends (124) are connected to the connecting segments (125), and the second insulating segment (2123) covers part of the surface of the free ends (124).

6. The stator according to claim 5, characterized in that The second insulating segment (2123) includes a first extending wall (21231) and a second extending wall (21232) connected to the first extending wall (21231). The first extending wall (21231) extends outward in a direction away from the first insulating segment (2121), and the second extending wall (21232) extends outward in a direction away from the first extending wall (21231).

7. The stator according to claim 6, wherein The stator (10) further has notches (104) and leakage openings (103). The notches (104) are located between the free ends (124) of adjacent stator tooth portions (12), and the leakage openings (103) are located between the second extension walls (21231) of adjacent insulating members (2). The pitch of the leakage openings (103) is smaller than the pitch of the notches (104).

8. The stator according to claim 6, wherein The insulating member (2) further includes a second insulating portion (211). The second insulating portion (211) is arranged along the distribution direction of the stator yoke portion (11), and the second insulating portion (211) covers at least part of the surface of the stator yoke portion (11). The second insulating portion (211) includes a third insulating segment (2111). The third insulating segment (2111) is connected to the first insulating segment (2121), and the third insulating segment (2111) extends along the axial direction of the stator core (1). And the third insulating segment (2111) is convexly arranged outward in a direction away from the first insulating segment (2121). The stator has a winding area, and at least part of the winding area is located between the second insulating segment (2123) and the third insulating segment (2111).

9. The stator according to claim 8, characterized in that, The second insulating portion (211) further includes a fourth insulating segment (2112). The fourth insulating segment (2112) is respectively connected to the third insulating segment (2111) and the first insulating segment (2121). The fourth insulating segment (2112) extends along the axial direction of the stator core (1), and the fourth insulating segment (2112) extends in a direction away from the third insulating segment (2111). The fourth insulating segment (2112) at least partially covers the inner surface of the stator yoke portion (11).

10. The stator according to claim 9, characterized in that, The insulating member (2) includes a docking portion (22). The docking portion (22) is located at one end of the fourth insulating segment (2112) away from the first insulating segment (2121). In the radial direction of the stator (10), at least part of the docking portions (22) of adjacent insulating members (2) overlap each other.

11. A motor, comprising a stator (10) and a rotor (3), characterized in that, The stator (10) includes a segmented iron core (102) and an insulating member (2). The segmented iron core (102) includes a segmented yoke portion (1021) and segmented tooth portions. The segmented iron core (102) is distributed around the rotation axis of the rotor (3), and the segmented iron core (102) is arranged in a circumferential enclosure. The segmented tooth portions extend from the segmented yoke portion (1021) towards the interior of the stator (10). The insulating member (2) includes a first insulating portion (212). The segmented tooth portions include connection segments (125) extending in the radial direction of the segmented iron core (1). The connection segments (125) include side walls (1251). The side walls (1251) of adjacent segmented tooth portions are arranged opposite to each other. The first insulating portion (212) includes a first insulating segment (2121). The first insulating segment (2121) wraps the outer surface of the side wall. The first insulating segment (2121) has a notch, and the notch is at least partially located on the surface of the first insulating segment (2121).

12. The motor according to claim 11, characterized in that, The first insulating segment (2121) has at least two notches. The two notches are located on the surface of the first insulating segment (2121). At least part of the surface of the first insulating segment (2121) is wavy.

Images