Stator insulation framework, motor stator and motor

Abstract

Provided are a stator insulation framework, a motor stator and a motor, the stator insulation framework comprises a framework body used for being connected with an end portion of a stator core, the framework body comprises a first framework portion and a second framework portion, and a framework winding groove is arranged between the first framework portion and the second framework portion; the first framework part is provided with a positioning block, and the positioning block is provided with a positioning part used for being matched with a winding tool. During winding, the winding tool can be matched with the positioning part on the positioning block to fix the stator iron core, so that the stator iron core can be prevented from shaking and shifting, the fixing effect of the winding tool on the stator iron core is improved, normal winding processing is ensured, and the winding quality is improved.

Description

Technical Field

[0001] This application relates to the field of motor technology, specifically to a stator insulation frame, a motor stator, and a motor. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy, widely used in various mechanical equipment, automation systems, and household appliances. An electric motor consists of a rotor and a stator. The stator can be formed by assembling multiple stator blocks, including the stator core and the stator windings wound on the stator core. When winding the stator windings, a winding fixture is needed to fix the stator core. However, current winding fixtures do not provide adequate fixation for the stator core, resulting in core wobbling and displacement, which affects the winding process and reduces winding quality. Utility Model Content

[0003] This application provides a stator insulation frame, a motor stator, and a motor, which can solve the problem of poor fixation of the stator core by the winding fixture.

[0004] According to one aspect of this application, one embodiment provides a stator insulation frame, comprising: a frame body for connecting to the end of a stator core, the frame body including a first frame portion and a second frame portion, a frame winding groove being provided between the first frame portion and the second frame portion; the first frame portion being provided with a positioning block, the positioning block being provided with a positioning portion for cooperating with a winding fixture.

[0005] In one embodiment, the positioning block is disposed on the side of the first skeleton portion away from the second skeleton portion, and the positioning block has grooves on opposite sides. The grooves are the positioning portions and are used to cooperate with the winding fixture to strengthen the connection between the stator insulation skeleton and the stator core.

[0006] In one embodiment, the skeleton body has a first side and a second side opposite to each other, the second side being used to cooperate with the end of the stator core, and the positioning block is provided with a connecting part, which is used to cooperate and connect with the mounting part provided at the end of the stator core.

[0007] In one embodiment, the skeleton body has opposing first side and second side, and opposing third side and fourth side. The third side and the fourth side are respectively provided with cantilevered limiting blocks. The limiting blocks extend from the first skeleton part in a direction away from the first side. The limiting blocks are used to embed in the stator slot to fix the insulating paper between the limiting blocks and the stator slot wall.

[0008] In one embodiment, the third side and the fourth side are respectively provided with relief grooves. The relief grooves are provided on the first skeleton part. The groove opening of the relief groove is located on the surface of the first skeleton part near the second side. The limiting block extends from the bottom of the relief groove in a direction away from the first side. A gap is left between the limiting block and the groove wall of the relief groove for the insertion of insulating paper in the stator groove.

[0009] In one embodiment, the distance between the opening of the relief groove and the bottom of the relief groove is greater than or equal to 0.3 mm.

[0010] In one embodiment, the side surface of the limiting block away from the inner side of the first frame portion is a combined surface. The combined surface includes a plane and an inclined surface. The plane and the inclined surface form a convex structure of the combined surface. The inclined surface is located on the side of the plane away from the center of the first frame portion. The plane is used to correspond to the plane portion of the stator slot wall. The inclined surface is used to correspond to the inclined portion of the stator slot wall. The plane portion of the stator slot wall and the inclined portion of the stator slot wall are connected to form a concave structure of the stator slot wall. The convex structure of the combined surface is used to press a portion of the insulating paper onto the concave structure of the stator slot wall.

[0011] Alternatively, the inner surface of the limiting block away from the first skeleton part is an arc-shaped convex surface, which is used to press part of the insulating paper onto the arc-shaped surface of the stator slot wall of the concave structure.

[0012] According to another aspect of this application, one embodiment provides a motor stator, including multiple stator blocks, each stator block including a stator core, insulating paper, stator windings, and two stator insulating frames as described above; the two insulating frames are respectively connected to both ends of the stator core, the first frame portion corresponds to the outer diameter side of the stator, the second frame portion corresponds to the inner diameter side of the stator, stator slots are provided on opposite sides of the stator core, the stator windings are wound in the stator slots and the frame winding slots, and the insulating paper is disposed in the stator slots to isolate the stator windings from the stator core.

[0013] In one embodiment, the skeleton body has a first side and a second side opposite to each other, and a third side and a fourth side opposite to each other. The third side and the fourth side are respectively provided with a cantilevered limiting block. The limiting block extends from the first skeleton part in a direction away from the first side. The limiting block is embedded in the stator slot from the end of the stator core to fix the insulating paper between the limiting block and the stator slot wall.

[0014] The third side and the fourth side are respectively provided with relief grooves. The relief grooves are provided on the first skeleton part. The opening of the relief groove is located on the surface of the first skeleton part near the second side. The limiting block extends from the bottom of the relief groove in a direction away from the first side. There is a gap between the limiting block and the groove wall of the relief groove. The two ends of the insulating paper are respectively inserted into the gap space left at the corresponding ends.

[0015] According to another aspect of this application, one embodiment provides an electric motor, including a housing and an electric motor stator as described above, the electric motor stator being disposed within the housing.

[0016] According to the stator insulation frame, motor stator and motor of the above embodiments, the first frame part of the insulation frame is provided with a positioning block. The positioning block is provided with a positioning part for cooperating with the winding fixture. During winding, the winding fixture can cooperate with the positioning part on the positioning block to fix the stator core, which helps to prevent the stator core from shaking and shifting, improves the fixing effect of the winding fixture on the stator core, ensures normal winding processing and improves winding quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a stator insulation frame according to one embodiment;

[0018] Figure 2 This is a schematic diagram of a structure in which a gap is left between the limiting block and the wall of the relief groove in one embodiment;

[0019] Figure 3 This is a schematic diagram of the structure of the insulating frame, stator core, and insulating paper in one embodiment.

[0020] Figure 4 This is a schematic diagram of a limiting block pressing down on insulating paper according to one embodiment;

[0021] Figure 5 As one embodiment Figure 4 AA section view;

[0022] Figure 6 This is a schematic diagram of the stator core structure of one embodiment;

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Stator core, 101-Outer diameter side, 102-Inner diameter side, 103-Stator slot, 104-Stator slot wall, 105-Mounting part;

[0025] 2-Frame body, 201-Positioning block, 202-Positioning part, 203-Connecting part, 204-First frame part, 205-Second frame part, 206-Limiting block, 207-Combination surface, 208-Leaving groove, 209-Second side, 210-Third side, 211-Fourth side, 212-Wire passage groove, 213-Frame winding groove, 214-First side;

[0026] 3-Insulating paper. Detailed Implementation

[0027] The present application will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0028] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0029] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the objects being described and have no sequential or technical meaning. Unless otherwise specified, the terms "connection" and "linkage" used in this application include both direct and indirect connections (linkages).

[0030] In related technologies, the winding fixture does not effectively fix the stator core, resulting in stator core wobbling and displacement, which affects the winding process and reduces winding quality. To address this, this application provides a protruding positioning block on the outer side of the first frame portion. The positioning block has a positioning part, allowing the winding fixture to cooperate with the positioning part on the positioning block to fix the stator core during winding, thus solving many problems caused by the winding fixture's poor fixation of the stator core.

[0031] Please see Figures 1 to 6This application provides a stator insulation frame, including a frame body 2 and other functional components as needed, which are described in detail below.

[0032] like Figures 1-3 As shown, in this embodiment, the skeleton body 2 is used to connect with the end of the stator core 1. The skeleton body 2 includes a first skeleton part 204 and a second skeleton part 205. A skeleton winding groove 213 is provided between the first skeleton part 204 and the second skeleton part 205. The first skeleton part 204 is provided with a positioning block 201. The positioning block 201 is provided with a positioning part 202 for cooperating with the winding tooling.

[0033] It is understood that in this embodiment, the first skeleton part 204 can correspond to the outer diameter side 101 of the stator, that is, after assembly, the first skeleton part 204 is located on the outer diameter side of the stator, and the second skeleton part 205 can correspond to the inner diameter side 102 of the stator, that is, after assembly, the second skeleton part 205 is located on the inner diameter side of the stator. In this embodiment, the outer diameter of the stator is the part of the outer peripheral sidewall of the stator, and the inner diameter of the stator is the part of the hole wall of the inner hole of the stator. This embodiment does not limit the structure between the first skeleton part 204 and the second skeleton part 205. It has a skeleton winding groove 213. The skeleton winding groove 213 can form a groove structure for the stator winding together with the stator groove 103 on the stator core 1. For example, the first skeleton part 204 and the second skeleton part 205 can be connected by a plate structure. The plate structure forms a skeleton body 2 similar to the "I" shape with the first skeleton part 204 and the second skeleton part 205. The plate structure corresponds to the bottom of the skeleton winding groove 213, and the first skeleton part 204 and the second skeleton part 205 correspond to the groove wall of the skeleton winding groove 213. This embodiment does not limit the specific shape of the positioning block 201. For example, it can be triangular, rectangular, semi-circular or irregular structure. The positioning block 201 has a protruding structure on the first skeleton part 204, so it is not easy to interfere with other parts when assembled with the winding fixture.

[0034] In the stator insulation frame provided in the above embodiment, the first frame part 204 is provided with a positioning block 201. The positioning block 201 is provided with a positioning part 202 for cooperating with the winding fixture. During winding, the winding fixture can cooperate with the positioning part 202 on the positioning block 201 to fix the stator core 1, which helps to prevent the stator core 1 from shaking and shifting, improves the fixing effect of the winding fixture on the stator core 1, ensures normal winding processing, and improves winding quality.

[0035] In one embodiment, such as Figure 1 , Figure 2As shown, the positioning block 201 is located on the side of the first frame portion 204 away from the second frame portion 205. The positioning block 201 has grooves on opposite sides, which are positioning portions 202. These grooves are used to cooperate with the winding fixture to strengthen the connection between the stator insulation frame and the stator core 1. In some embodiments, during winding, the protrusion of the winding fixture is inserted into the corresponding groove. Because the insulation frame is assembled on the two opposite ends of the stator core 1, the insulation frame and the stator core 1 are fixed together. After the protrusion of the winding fixture is inserted into the corresponding groove on the insulation frame located at the end of the stator core 1, the stator core 1 can be positioned, which helps prevent the stator core 1 from shaking or shifting, and strengthens the connection between the stator insulation frame and the stator core 1. In this embodiment, the positioning block 201 has grooves on both opposite sides, which helps improve the positioning effect. In some embodiments, a groove can be provided on each opposite side of the positioning block 201. This embodiment does not specifically limit the shape of the grooves; for example, they can be, but are not limited to, arc-shaped grooves, rectangular grooves, or triangular grooves, etc. In some embodiments, the positioning part 202 may also be a boss structure, and a corresponding groove structure is provided on the winding fixture, so that the boss structure can be inserted into the groove structure on the winding fixture to form a positioning. In some application scenarios, the positioning part 202 may also be a hole structure provided on the positioning block 201, and a corresponding columnar protrusion is provided on the winding fixture, so that the columnar protrusion can be inserted into the hole structure on the winding fixture to form a positioning. When a hole structure is provided on the positioning block 201, hole structures may be provided on both opposite sides of the positioning block 201, or only one hole structure may be provided on the positioning block 201.

[0036] In one embodiment, such as Figure 1 , Figure 2 , Figure 6As shown, the frame body 2 has a first side 214 and a second side 209. The second side 209 is used to mate with the end of the stator core 1. The positioning block 201 is provided with a connecting part 203, which is used to mate with the mounting part 105 provided at the end of the stator core 1. In some embodiments, during assembly, the connecting part 203 on the positioning block 201 can be made to engage with the mounting part 105 on the stator core 1. The engagement between the connecting part 203 and the mounting part 105 can limit the mutual displacement between the insulating frame and the stator core 1. In this embodiment, the convex-concave fit can be a fit between a boss and a hole or slot. For example, the connecting part 203 can be a boss, and the mounting part 105 can be a hole. During assembly, the boss on the positioning block 201 is inserted into the hole provided on the end face of the stator core 1 to form a convex-concave fit connection; or the connecting part 203 can be a hole, and the mounting part 105 can be a boss. During assembly, the boss provided on the end face of the stator core 1 is inserted into the hole on the positioning block 201 to form a convex-concave fit connection. This embodiment does not limit the specific number of connecting parts 203, and one or more can be provided. The connecting parts 203 and the mounting parts 105 on the stator core 1 can correspond one-to-one. In this embodiment, the surface of the positioning block 201 away from the first side 214 can be flush with the side of the second side 209. After assembly, the positioning block 201 can fit against the end face of the stator core 1, that is, the force on the positioning block 201 can be better transmitted to the stator core 1, which is more conducive to the assembly between the winding fixture and the positioning block 201.

[0037] In one embodiment, such as Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, the skeleton body 2 has opposing first sides 214 and second sides 209, and opposing third sides 210 and fourth sides 211. The third sides 210 and fourth sides 211 are each provided with cantilevered limiting blocks 206. The limiting blocks 206 extend from the first skeleton portion 204 away from the first side 214. The limiting blocks 206 are used to embed into the stator slots 103 to fix the insulating paper 3 between the limiting blocks 206 and the stator slot wall 104. In this embodiment, the first sides 214 and second sides 209 are one opposing side on the skeleton body 2, and the third sides 210 and fourth sides 211 are another opposing side on the skeleton body 2. In this embodiment, the third sides 210 and fourth sides 211 correspond to the stator slots 103 on both sides of the stator core 1. The cantilevered limiting block 206 facilitates insertion into the stator slot 103. The limiting block 206 extends from the first frame portion 204 in a direction away from the first side 214, meaning it is positioned on the first frame portion 204. This means the limiting block 206 corresponds to the slot wall of the stator slot 103 near the stator outer diameter side 101. The limiting block 206 does not occupy the bottom of the stator slot 103, which helps improve the slot fill factor of the motor and reduce the volume of the insulating frame. The limiting block 206 embedded in the stator slot 103 also forms a mutual positioning between the insulating frame and the stator core 1. Combined with the connection between the connecting portion 203 on the positioning block 201 and the mounting portion 105 on the stator core 1, the insulating frame can be stably assembled at the end of the stator core 1. In this embodiment, the limiting block 206 is embedded in the stator slot 103 to fix the insulating paper 3 between the limiting block 206 and the stator slot wall 104. A certain gap can be left between the limiting block 206 and the stator slot wall 104 to accommodate the insulating paper 3. During assembly, the insulating paper 3 can be placed in the stator slot 103 first, and then the insulating frame can be assembled to the end of the stator core 1, so that the limiting block 206 is embedded in the stator slot 103 to fix the insulating paper 3 in the stator slot 103. In this embodiment, the stator slot wall 104 is provided with a part for the limiting block 206 to be embedded, and the shape of the embedded part can be adapted to the shape of the corresponding embedded part on the limiting block 206. Fixing the insulating paper 3 between the limiting block 206 and the stator slot wall 104 helps to improve the assembly stability of the insulating paper 3. In some embodiments, the limiting block 206 may also extend from the second frame portion 205 in a direction away from the first side 214, that is, the limiting block 206 is provided on the second frame portion 205. In this case, the limiting block 206 can also be inserted into the stator slot 103 to fix the insulating paper 3. In some embodiments, the limiting block 206 may also be provided on both the first frame portion 204 and the second frame portion 205.

[0038] In one embodiment, the third side 210 and the fourth side 211 are respectively provided with relief grooves 208. The relief grooves 208 are provided on the first frame portion 204, and the opening of the relief grooves 208 is located on the surface of the first frame portion 204 near the second side 209. The limiting block 206 extends from the bottom of the relief groove 208 in a direction away from the first side 214. A gap is left between the limiting block 206 and the groove wall of the relief groove 208 for the insertion of the insulating paper 3 in the stator slot 103. During assembly, the insulating paper 3 is inserted into the relief groove 208. After insertion, the insulating paper 3 protrudes from the end face of the stator core 1. That is, the relief groove 208 forms a relief space for the insulating paper 3 to protrude from the end face of the stator core 1. The protrusion of the insulating paper 3 from the end face of the stator core 1 helps to ensure the isolation effect of the insulating paper 3 and improve the stability of electrical isolation. In this embodiment, the clearance groove 208 also has a clearance opening communicating with its groove opening. The clearance opening is located on the side of the third side 210 or the fourth side 211, allowing the insulating paper 3 in the stator grooves 103 on opposite sides to extend from the clearance opening on the corresponding side. This extension direction is circumferential to the stator, which also helps to ensure the isolation effect of the insulating paper 3 and improve the insulation performance of the stator. In some embodiments, the distance between the limiting block 206 and the groove wall of the clearance groove 208 can be greater than or equal to the thickness of the insulating paper 3. Specifically, the distance between the limiting block 206 and the groove wall of the clearance groove 208 can be set to be equal to the thickness of the insulating paper 3.

[0039] In one embodiment, the distance between the opening and the bottom of the relief groove 208 is greater than or equal to 0.3 mm. In this case, the length of the insulating paper 3 extending beyond the end face of the stator core 1 is greater than or equal to 0.3 mm, which is more conducive to improving the insulation performance of the stator. In some embodiments, the distance between the opening and the bottom of the relief groove 208 can also be set to less than 0.3 mm as needed.

[0040] In one embodiment, such as Figure 1 , Figure 2 , Figure 5 , Figure 6As shown, the inner surface of the limiting block 206 away from the first frame portion 204 is a composite surface 207. The composite surface 207 includes a plane and an inclined surface. The plane and the inclined surface form a convex structure on the composite surface 207. The inclined surface is located on the side of the plane away from the center of the first frame portion 204. The plane is used to correspond to the plane portion of the stator slot wall 104, and the inclined surface is used to correspond to the inclined portion of the stator slot wall 104. The plane portion and the inclined portion of the stator slot wall 104 are connected to form a concave structure stator slot wall 104. The convex composite surface 207 is used to press a portion of the insulating paper 3 onto the concave structure stator slot wall 104. In this embodiment, the plane and the inclined surface form a convex structure on the composite surface 207, that is, the thickness of the limiting block 206 gradually changes at the inclined surface, and the thickness of the limiting block 206 is greater closer to the plane. The inner surface of the limiting block 206 away from the first skeleton part 204 is a convex structure assembly surface 207. The convex structure assembly surface 207 corresponds to the shape of the stator slot wall 104 of the concave structure. After assembly, the convex structure assembly surface 207 is embedded in the stator slot wall 104 of the concave structure, which helps to reduce the protrusion height of the limiting block 206 on the stator slot wall 104 and is more conducive to winding processing.

[0041] In one embodiment, the inner surface of the limiting block 206 away from the first skeleton portion 204 can also be an arc-shaped convex surface. The arc-shaped convex surface is used to press a portion of the insulating paper 3 onto the arc-shaped surface of the stator slot wall 104 of the concave structure. After assembly, the arc-shaped convex surface is embedded in the stator slot wall 104 of the concave structure, which also helps to reduce the protrusion height of the limiting block 206 on the stator slot wall 104, and is more conducive to winding processing. In some embodiments, the inner surface of the limiting block 206 away from the first skeleton portion 204 can also be other convex structures, and correspondingly, other concave structures can also be provided on the slot wall of the stator slot 103, so that the convex structure can be embedded in either the concave or concave structure.

[0042] In some implementations, such as Figure 3 As shown, a wire passage groove 212 may also be provided on the first skeleton part 204, and the wire passage groove 212 is provided close to the first side 214 of the skeleton body 2. The wire end of the stator winding can extend into the skeleton winding groove 213 through the wire passage groove 212, or extend out of the skeleton winding groove 213.

[0043] In the stator insulation frame provided in the above embodiment, the first frame part 204 is provided with a positioning block 201. The positioning block 201 is provided with a positioning part 202 for cooperating with the winding fixture. During winding, the winding fixture can cooperate with the positioning part 202 on the positioning block 201 to fix the stator core 1, which helps to prevent the stator core 1 from shaking and shifting, improves the fixing effect of the winding fixture on the stator core 1, ensures normal winding processing, and improves winding quality.

[0044] Please see Figures 1 to 6This application also provides a motor stator, including multiple stator blocks. Each stator block includes a stator core 1, insulating paper 3, stator windings, and two stator insulating frames as described above. The two insulating frames are respectively connected to both ends of the stator core 1. The first frame portion 204 corresponds to the outer diameter side 101 of the stator, and the second frame portion 205 corresponds to the inner diameter side 102 of the stator. Stator slots 103 are provided on opposite sides of the stator core 1. The stator windings are wound in the stator slots 103 and the frame winding slots 213. The insulating paper 3 is disposed in the stator slots 103 to isolate the stator windings from the stator core 1.

[0045] It is understood that the motor stator in this embodiment can be formed by assembling multiple stator blocks into a circle. This embodiment does not impose specific restrictions on the specific splicing method between the separate stator blocks. The insulating frame in this embodiment is the same as in the above embodiment, and will not be described again here. In this embodiment, two insulating frames are respectively connected to both ends of the stator core 1. After connection, the winding slots 213 of the two insulating frames are connected to the stator slots 103 on opposite sides of the stator core 1 to form an annular slot structure that can be wound around by the stator winding. In this embodiment, the insulating frames are set at both ends of the stator core 1, and insulating paper 3 is set in the stator slots 103. The insulation performance of the stator is achieved by the insulating paper 3. There is no need to set an insulating part on the insulating frame that extends into the stator slots 103 to achieve insulation, thus avoiding the situation where the insulating part occupies the stator slots 103. Moreover, the insulating paper 3 is thick at the bottom and thin at the bottom, for example, it can be 0.15 mm, which is beneficial to increase the net slot area, improve the slot fill factor, and reduce the volume of the insulating frame. Furthermore, the length of the insulating paper 3 can be adjusted arbitrarily according to the length of the stator slot 103, and the assembly of the insulating frame will not be affected by the length of the stator slot 103, which is conducive to expanding the application range of the insulating frame.

[0046] In one embodiment, such as Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, the skeleton body 2 has a first side 214 and a second side 209, and a third side 210 and a fourth side 211. The third side 210 and the fourth side 211 are respectively provided with cantilevered limiting blocks 206. The limiting blocks 206 extend from the first skeleton part 204 in a direction away from the first side 214. The limiting blocks 206 are embedded in the stator slot 103 from the end of the stator core 1 to fix the insulating paper 3 between the limiting blocks 206 and the stator slot wall 104. Furthermore, the third side 210 and the fourth side 211 are respectively provided with relief grooves 208. The relief grooves 208 are located on the first frame part 204, and the opening of the relief grooves 208 is located on the surface of the first frame part 204 near the second side 209. The limiting block 206 extends from the bottom of the relief groove 208 in a direction away from the first side 214. There is a gap between the limiting block 206 and the groove wall of the relief groove 208. The two ends of the insulating paper 3 are respectively inserted into the gap space left at the corresponding ends. The limiting block 206 is embedded in the stator slot 103, which can form a mutual positioning between the insulating frame and the stator core 1. Combined with the connection between the connecting part 203 provided on the positioning block 201 and the mounting part 105 on the stator core 1, the insulating frame can be stably assembled on the end of the stator core 1. The limiting block 206 is embedded in the stator slot 103 to fix the insulating paper 3 in the stator slot 103, which helps to improve the assembly stability of the insulating paper 3. During assembly, the insulating paper 3 can also be inserted into the relief groove 208. After insertion, the insulating paper 3 extends out of the end face of the stator core 1. That is, the relief groove 208 forms a relief space for the insulating paper 3 to extend out of the end face of the stator core 1. The insulating paper 3 extending out of the end face of the stator core 1 helps to ensure the isolation effect of the insulating paper 3 and improve the stability of electrical isolation.

[0047] The motor stator provided in the above embodiment includes an insulating frame. The first frame portion 204 of the insulating frame is provided with a positioning block 201. The positioning block 201 is provided with a positioning part 202 for cooperating with the winding fixture. During winding, the winding fixture can cooperate with the positioning part 202 on the positioning block 201 to fix the stator core 1, which helps to prevent the stator core 1 from shaking and shifting, improves the fixing effect of the winding fixture on the stator core 1, ensures normal winding processing, and improves winding quality.

[0048] This application also provides an electric motor, including a housing and a motor stator as described above, wherein the motor stator is disposed within the housing.

[0049] It is understood that the motor stator in this embodiment is the same as the motor stator in the above embodiments, and will not be described again here. In some embodiments, the motor stator can be fixed in the housing by, but not limited to, a heat-shrinking process. The motor in this embodiment may also include other functional components or structures, such as a rotor, which is disposed in the inner hole of the stator, and the rotor and the housing can be assembled by bearings.

[0050] The motor provided in the above embodiment has a positioning block 201 on the first frame part 204 of the insulating frame. The positioning block 201 has a positioning part 202 for cooperating with the winding fixture. During winding, the winding fixture can cooperate with the positioning part 202 on the positioning block 201 to fix the stator core 1, which helps to prevent the stator core 1 from shaking and shifting, improves the fixing effect of the winding fixture on the stator core 1, ensures normal winding processing, and improves winding quality.

[0051] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A stator insulating former, characterized by, The application relates to a stator insulation skeleton for a stator. The skeleton body comprises a first skeleton part and a second skeleton part, and a skeleton winding slot is arranged between the first skeleton part and the second skeleton part; the first skeleton part is provided with a positioning block, and the positioning block is provided with a positioning part used for cooperating with a winding tool.

2. The stator insulating former of claim 1, wherein The positioning block is arranged on the side of the first skeleton part away from the second skeleton part, and opposite sides of the positioning block are provided with grooves, which are the positioning parts and are used for cooperating with the winding tool to strengthen the connection between the stator insulation skeleton and the stator core.

3. The stator insulating former of claim 2, wherein The skeleton body has opposite first and second sides, the second side is used for cooperating with the end of the stator core, the positioning block is provided with a connecting part used for cooperating with a mounting part arranged on the end of the stator core.

4. The stator insulating former according to any one of claims 1 to 3, characterized in that The skeleton body has opposite first and second sides and opposite third and fourth sides, the third and fourth sides are respectively provided with cantilever-shaped limiting blocks, the limiting blocks extend from the first skeleton part to the direction away from the first side, and the limiting blocks are used for embedding into stator slots to fix insulation paper between the limiting blocks and stator slot walls.

5. The stator insulating former of claim 4, wherein The third and fourth sides are respectively provided with accommodating grooves arranged on the first skeleton part, the groove openings of the accommodating grooves are located on the surface of the first skeleton part close to the second side, the limiting blocks extend from the groove bottoms of the accommodating grooves to the direction away from the first side, and a space is left between the limiting blocks and the groove walls of the accommodating grooves for the insertion of the insulation paper in the stator slots.

6. The stator insulating former of claim 5, wherein The distance between the groove opening and the groove bottom of the accommodating groove is greater than or equal to 0.3 mm.

7. The stator insulating former of claim 4, wherein The side surface of the limiting block away from the inner side of the first skeleton part is a combined surface, the combined surface comprises a plane and an inclined surface, the plane and the inclined surface form a convex combined surface, the inclined surface is located on the side of the plane away from the center of the first skeleton part, the plane is used for corresponding to the plane part of the stator slot wall, the inclined surface is used for corresponding to the inclined part of the stator slot wall, the plane part of the stator slot wall and the inclined part of the stator slot wall are connected to form a concave stator slot wall, and the convex combined surface is used for pressing part of the insulation paper on the concave stator slot wall. Alternatively, the side surface of the limiting block away from the inner side of the first skeleton part is an arc convex surface, and the arc convex surface is used for pressing part of the insulation paper on the arc surface of the concave stator slot wall.

8. An electric machine stator, characterized by The application further relates to a stator comprising a plurality of stator blocks, the stator blocks comprising a stator core, insulation paper, a stator winding and two stator insulation skeletons according to any one of claims 1-7; the two stator insulation skeletons are respectively connected to the two ends of the stator core, the first skeleton part corresponds to the outer diameter side of the stator, the second skeleton part corresponds to the inner diameter side of the stator, opposite sides of the stator core are provided with stator slots, the stator winding is arranged in the stator slots and the skeleton winding slots, and the insulation paper is arranged in the stator slots to isolate the stator winding from the stator core.

9. The motor stator of claim 8, wherein, The skeleton body has opposite first and second sides, and opposite third and fourth sides, the third and fourth sides are respectively provided with cantilever-shaped limiting blocks, the limiting blocks extend from the first skeleton part in a direction away from the first side, and the limiting blocks are embedded in the stator slot from the end of the stator core to fix the insulation paper between the limiting blocks and the stator slot wall; The third and fourth sides are respectively provided with a let-out groove, the let-out groove is arranged on the first skeleton part, the groove opening of the let-out groove is located on the surface of the first skeleton part close to the second side, the limiting blocks extend from the groove bottom of the let-out groove in a direction away from the first side, and a space is left between the limiting blocks and the groove wall of the let-out groove, and the two ends of the insulation paper are respectively inserted into the space left by the corresponding end.

10. An electric machine, characterized in that The electric machine stator as claimed in claim 8 or 9 is arranged in the shell.

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