Insulation frame, stator and motor

Abstract

The present invention belongs to the technical field of motors, and discloses an insulating skeleton, a stator, and a motor. The insulating skeleton includes a skeleton body and winding teeth, and a plurality of winding teeth are evenly arranged around the axis of the inner circle of the skeleton body, and at least one limiting space is arranged on the skeleton body corresponding to each winding tooth; the interior of each limiting space can be clamped with a limiting cover made of an insulating material, and the interior of the limiting cover can accommodate a wiring terminal, and at least one threading hole is provided on the limiting cover. The present invention sets a limiting space and a limiting cover, and after each coil is wound, the two ends of the winding wire and the end of the lead wire are riveted together through the wiring terminal to form a wiring terminal, and the wiring terminal is limited by the limiting cover, and the winding wire and the lead wire can pass through the threading hole, thereby eliminating the processes of welding the wiring terminal, sleeve insulating sleeve, hot blowing insulating sleeve, and fixing the terminal, greatly improving the production efficiency, and at the same time, improving the stability of the wiring terminal positioning, which helps to improve the quality of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to an insulating frame, a stator and a motor. Background Art

[0002] The stator is mainly composed of a stator core, an insulating frame and a stator winding. The insulating frame is provided at both ends of the stator core. Each insulating frame has several winding teeth for winding coils separately. Several coils constitute the stator winding. The insulating frame mainly supports and insulates the stator winding, and resists the electromagnetic force generated by the stator winding to prevent the winding from losing its shape or short-circuiting, so as to ensure the normal operation of the motor.

[0003] The existing insulating frame is provided with a wire inlet corresponding to each winding tooth along the radial direction of the stator core. When winding on the insulating frame, each winding wire enters the winding tooth through the wire inlet from the outside of the insulating frame, and is wound outside the two winding teeth to form an independent coil. The two ends of the winding wire and the end of the lead wire are gathered to form a terminal.

[0004] The current terminal needs to be covered with an insulating sleeve after welding, and hot air is blown to shrink and tightly cover the terminal to ensure the insulation of the terminal. Then the terminal needs to be tied and positioned on the sub-skeleton. The process is relatively cumbersome and greatly affects the production efficiency. Secondly, when the above-mentioned insulating skeleton is wound, the part of the winding wire between the wire inlet and the winding teeth protrudes from the surface of the insulating skeleton, causing the winding wire to be scratched against the protruding part of the insulating skeleton when it is wound near the wire inlet, causing damage to the paint film of the protruding part of the winding wire, thereby affecting the insulation of the winding wire. It is also inconvenient to position the coil, causing the coil to become loose after winding. In addition, part of the insulating skeleton is spliced ​​by multiple sub-skeletons arranged along the circumference of the stator core, but the splicing structure design of the sub-skeleton is unreasonable, and the production precision of the sub-skeleton is required to be high, which is inconvenient for automated splicing. Summary of the invention

[0005] The purpose of the present invention is to provide an insulating frame, a stator and a motor, which do not require welding of the terminal and sleeve connection of the insulating sleeve, so as to reduce production costs and improve production efficiency; at the same time, the winding wire is protected to ensure the insulation of the winding wire.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] An insulating frame is arranged at the end of the stator core along the axial direction thereof, the insulating frame comprising a frame body and winding teeth, a plurality of winding teeth are evenly arranged around the axis of the inner ring of the frame body, and at least one limiting space is arranged on the frame body corresponding to each winding tooth;

[0008] The interior of each of the limiting spaces can be snapped into a limiting cover made of insulating material, and the interior of the limiting cover can accommodate a wiring terminal, which is used to connect the two ends of the winding wire and the end of the lead-out wire to form a connecting end. At least one wire threading hole is provided on the limiting cover, and the wire threading hole is used for the winding wire and the lead-out wire to pass through the limiting cover, and limits the wiring terminal from moving out of the limiting cover.

[0009] Preferably, two limiting members are provided on the skeleton body along the radial direction thereof at intervals, the limiting space is formed between the two limiting members, and the limiting cover abuts between the two limiting members.

[0010] Preferably, the limiting cover comprises:

[0011] a cover plate, the cover plate being located at one end of the stopper away from the frame body and abutting against the stopper;

[0012] A first cover sheet and a second cover sheet, wherein the first cover sheet and the second cover sheet are spaced apart between the two limiting members, distribution directions of the first cover sheet and the second cover sheet are arranged to intersect with distribution directions of the two limiting members at an angle, and the first cover sheet and / or the second cover sheet abut between the two limiting members.

[0013] Preferably, the threading hole is formed on the first cover sheet, and the first cover sheet is spaced apart from the limiter at a side edge close to the limiter.

[0014] Preferably, a limiting groove is provided on a side of at least one of the limiting members close to the second cover plate, the limiting groove is provided along the axial direction of the skeleton body, a limiting strip is provided on the second cover plate, and the limiting strip is plugged into and matched with the limiting groove.

[0015] Preferably, an extension piece is provided on at least one of the limit members at one end away from the skeleton body, and a limit block is provided on the limit member. The cross-sectional area of ​​the limit block perpendicular to the axial direction of the stator core gradually increases from away from the skeleton body to close to the skeleton body, and the limit cover is abutted between the limit block and the limit member.

[0016] Preferably, a wire inlet is provided on the skeleton body corresponding to each of the threading holes, and a wire embedding groove is provided at one end of the wire inlet close to the inner circle of the skeleton body, and the wire embedding groove extends toward the winding teeth along the axial direction of the skeleton body.

[0017] Preferably, the skeleton body is formed by splicing a plurality of sub-skeletons arranged along the circumference of the stator core, and along the circumference of the stator core, a connector is provided at one end of the sub-skeleton and a plug-in slot is provided at the other end; when two adjacent sub-skeletons are spliced, the connector of the rear sub-skeleton is plugged into and matched with the plug-in slot of the front sub-skeleton.

[0018] The stator comprises a stator core and an insulating frame, wherein the inner ring of the stator core is provided with a plurality of core teeth around its axis, and the insulating frame is provided with one at each end of the stator core along its axial direction, and the plurality of winding teeth are provided in one-to-one correspondence with the plurality of core teeth.

[0019] The motor comprises a rotor and a stator, wherein the stator is sleeved on the outer circumference of the rotor.

[0020] Beneficial effects of the present invention:

[0021] The present invention provides a limiting space corresponding to each winding tooth on the skeleton body, and the inside of each limiting space can be clamped with a limiting cover. After the winding wire is wound on the winding tooth, the two ends of the winding wire and the end of the lead wire can be riveted together through the terminal to form a terminal. The terminal can be placed in the limiting space, and then the limiting cover is directly clamped in the limiting space. The winding wire and the lead wire can pass through the limiting cover through the threading hole on the limiting space, and the terminal is restricted inside the limiting cover; thus, after the stator winding is wound, welding is not required, and it is directly fixed by riveting, and the terminal is limited and insulated by the limiting cover made of insulating material, thereby eliminating the process of sleeve-connecting the insulating sleeve, hot-blowing the insulating sleeve and fixing the terminal, greatly improving the production efficiency, and at the same time, improving the stability of the terminal positioning, which is helpful to improve the quality of the motor. In addition, the limiting cover also has a good protective effect on the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the stator of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the skeleton body of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure after the sub-frame and the limiting cover of the present invention are assembled;

[0025] Figure 4 It is an exploded view of the sub-frame and the limiting cover of the present invention;

[0026] Figure 5 It is a schematic structural diagram of the sub-skeleton of the present invention;

[0027] Figure 6 It is a schematic structural diagram of the wiring terminal of the present invention.

[0028] In the figure:

[0029] 100, stator core; 101, core teeth; 200, winding wire; 300, lead wire;

[0030] 1. Skeleton body; 2. Winding teeth; 21. Baffle; 22. Plug-in column; 3. Sub-skeleton; 31. Limiting space; 32. Limiting piece; 33. Limiting groove; 34. Plug-in piece; 35. Plug-in groove; 36. Overlapping piece; 361. Binding groove; 37. Extension piece; 371. Limiting block; 38. Wire inlet; 381. Wire embedding groove; 39. Wire duct; 4. Limiting cover; 41. Cover plate; 411. Notch; 42. First cover piece; 421. Threading hole; 43. Second cover piece; 431. Limiting strip; 5. Winding column; 6. Terminal block. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] Refer to the following Figures 1 to 6 The insulating frame, stator and motor provided by the present invention are described.

[0036] Reference Figure 1 The motor includes a housing, a rotor and a stator. The stator is fixedly connected to the inner wall of the housing, and the rotor is rotatably arranged in the inner ring of the stator and is rotatably connected to the housing. The stator includes a stator core 100, an insulating frame and a stator winding. The inner ring of the stator core 100 is provided with a plurality of core teeth 101 around its axis; the insulating frame is connected to both ends of the stator core 100 along its axial direction; and the stator winding is wound on the stator core 100.

[0037] Reference Figure 2 The insulating skeleton includes a skeleton body 1 and winding teeth 2. The skeleton body 1 is arranged in a ring shape and is coaxially arranged with the stator core 100. A plurality of winding teeth 2 are evenly arranged around the axis line in the inner circle of the skeleton body 1. The plurality of winding teeth 2 are arranged in a one-to-one correspondence with the plurality of core tooth portions 101.

[0038] Specifically, the skeleton body 1 in this embodiment is composed of a plurality of sub-skeletons 3 arranged along the circumference of the stator core 100, and each sub-skeleton 3 is provided with at least one winding tooth 2. In this embodiment, nine sub-skeletons 3 are provided, and each sub-skeleton 3 is provided with a winding tooth 2, and each winding tooth 2 is also connected to a baffle 21 on the side away from the sub-skeleton 3, and the baffle 21 is used to limit the coil wound on the winding tooth 2 from being separated from the winding tooth 2. The spliced ​​insulating skeleton enables it to adapt to the operation of a standard winding machine, facilitates automated mass production, can improve production efficiency and reduce costs, and is also convenient for disassembly and maintenance.

[0039] Reference Figure 3 and Figure 4In order to achieve the positioning of the sub-skeleton 3, along the circumference of the stator core 100, one end of each sub-skeleton 3 is connected with a connector 34, and the connector 34 is located on the side of the sub-skeleton 3 close to or away from the winding teeth 2. The other end of each sub-skeleton 3 is provided with a plug-in groove 35. When two adjacent sub-skeletons 3 are spliced, the connector 34 of the rear sub-skeleton 3 is plugged into and matched with the plug-in groove 35 of the front sub-skeleton 3, so that multiple sub-skeletons 3 are spliced ​​end to end to form a skeleton body 1, and the sub-skeleton 3 is limited in the radial direction of the skeleton body 1, so that the sub-skeleton 3 is not easy to move along the radial direction of the skeleton body 1.

[0040] In addition, the connector 34 in this embodiment is block-shaped and is located on the side of the sub-skeleton 3 away from the winding teeth 2, that is, the connector 34 and the plug-in slot 35 are both located on the outer ring of the skeleton body 1, so that each sub-skeleton 3 can rotate relative to the sub-skeletons 3 at both ends along the axial direction parallel to the skeleton body 1. In addition, each sub-skeleton 3 is also connected with a lap joint 36, which is located at the plug-in slot 35 and extends out of the sub-skeleton 3. When two adjacent sub-skeletons 3 are spliced, the lap joint 36 of the previous sub-skeleton 3 is overlapped on the next sub-skeleton 3.

[0041] Based on the above, when splicing the skeleton body 1, the sub-skeletons 3 are first plugged together in sequence. When the last sub-skeleton 3 in the skeleton body 1 needs to be spliced, the sub-skeleton 3 is first placed in the gap between the two sub-skeletons 3, and the plug-in 34 is located on the outside of the previous sub-skeleton 3, and the plug-in slot 35 is located on the inside of the next sub-skeleton 3. Then the sub-skeleton 3 is rotated so that the plug-in 34 is in the plug-in slot 35 of the previous sub-skeleton 3, and the plug-in 34 of the next sub-skeleton 3 is located in the plug-in slot 35 of the sub-skeleton 3. At the same time, the lap joint 36 is on the next sub-skeleton 3 to complete the splicing of the sub-skeleton 3. At this time, the lap joint 36 limits the sub-skeleton 3 in the axial direction of the skeleton body 1, so that the sub-skeleton 3 is not easy to move along the axial direction of the skeleton body 1, thereby improving the stability of the skeleton body 1 structure. In addition, the sub-skeleton 3 is assembled in an overlapping manner, which does not require high precision for the sub-skeleton 3, is relatively simple during the installation process, and is easy to assemble through automated equipment, thereby improving production efficiency.

[0042] Reference Figure 5 Furthermore, a plug-in column 22 is connected to each sub-frame 3 and the baffle 21 on one side close to the stator core 100, and a plug-in hole is provided at the end of the stator core 100 corresponding to each plug-in column 22, and a single plug-in column 22 can be plugged into a single plug-in hole. After the nine sub-frames 3 are spliced ​​into the frame body 1, the frame body 1 can be directly plugged into the end of the stator core 100, thereby realizing the overall positioning of the frame body 1.

[0043] It is worth noting that the lap joint 36 in this embodiment is L-shaped, and one end of the lap joint 36 is connected to the previous sub-frame 3, and the other end of the lap joint 36 is in contact with the next sub-frame 3. The L-shaped lap joint 36 forms a through hole between the lap joint 36 on the previous sub-frame 3 and the next sub-frame 3, and a binding groove 361 is provided on the lap joint 36, so that the lead wire 300 can be bound and fixed at the through hole, and the binding wire or the binding tie can be embedded in the binding groove 361 to prevent the binding position from shifting, that is, to prevent the lead wire 300 from moving abnormally.

[0044] It should be noted that all sub-skeletons 3 in the present embodiment are made of resin, specifically PPS resin or PBT resin. In the present embodiment, PPS resin (polyphenylene sulfide) is taken as an example. PPS resin has the advantages of being hard and brittle, having high crystallinity, being flame retardant, having good thermal stability, having high mechanical strength, and having excellent electrical properties. It has excellent thermal stability, wear resistance, creep resistance, and has excellent mechanical and electrical properties in a wide range (temperature, humidity, frequency). In some other embodiments, the sub-skeleton 3 may also be made of plastic. In addition, in the present embodiment, the winding teeth 2, the baffle 21, the connector 34, and the lap joint 36 are all formed integrally with the sub-skeleton 3, which helps to improve the strength of each component and improve the working stability of the sub-skeleton 3. In some other embodiments, the winding teeth 2, the baffle 21, the connector 34, and the lap joint 36 may also be fixedly connected to the sub-skeleton 3.

[0045] Reference Figure 3 and Figure 4 Furthermore, at least one limiting space 31 is provided on each sub-skeleton 3 corresponding to each winding tooth 2. In the present embodiment, a limiting space 31 is provided on each sub-skeleton 3, and the interior of the limiting space 31 is clamped with a limiting cover 4, and at least one threading hole 421 is provided on the limiting cover 4. The interior of the limiting cover 4 can accommodate a wiring terminal 6, and the wiring terminal 6 has a connecting hole for inserting the end of the winding wire 200 and the end of the lead-out wire 300 together. The threading hole 421 can allow the winding wire 200 and the lead-out wire 300 to pass through the limiting cover 4 and limit the terminal from moving out of the limiting cover 4.

[0046] Through the above arrangement, after the winding wire 200 is wound on the winding teeth 2, both ends of the winding wire 200 and the end of the lead wire 300 are all inserted into the connection hole, and the terminal 6 is riveted to form a terminal. Please refer to the final state. Figure 6 Then, the connection terminal 6 is placed in the limiting space 31 , and the limiting cover 4 is clamped in the limiting space 31 , the winding wire 200 and the lead wire 300 can pass through the limiting cover 4 through the threading hole 421 on the limiting space 31 , and the connection terminal 6 is confined inside the limiting cover 4 .

[0047] Firstly, the welding process of the terminal of the winding wire 200 and the lead wire 300 is omitted, and there is no need to set insulating sleeves and hot-blow insulating sleeves on the terminal, which not only improves the production efficiency, but also makes the riveting terminal 6 more convenient to operate with the help of automated equipment (such as riveting equipment) compared with setting insulating sleeves; secondly, the process of positioning the terminal is omitted, further improving the production efficiency; in addition, the limit cover 4 also has a good protective effect on the terminal 6, which helps to improve the stability of the terminal operation.

[0048] Specifically in this embodiment, two limiting members 32 are provided on each sub-frame 3 at intervals along the radial direction of the frame body 1. The limiting members 32 in this embodiment are provided in a plate shape, and the thickness direction of the limiting members 32 is perpendicular to the axial direction of the frame body 1, so that a limiting space 31 is formed between the two limiting members 32. In some other embodiments, the limiting members 32 may also be provided in a frame shape or a rod shape.

[0049] Further, the position-limiting cover 4 includes a cover plate 41, a first cover piece 42, and a second cover piece 43. The cover plate 41 is located at one end of the position-limiting member 32 away from the skeleton body 1 and abuts against the position-limiting member 32. The first cover piece 42 and the second cover piece 43 are arranged between the two position-limiting members 32 at intervals. The distribution direction of the first cover piece 42 and the second cover piece 43 is perpendicular to the distribution direction of the two position-limiting members 32. The first cover piece 42 and / or the second cover piece 43 abuts between the two position-limiting members 32. In this embodiment, only the second cover piece 43 abuts between the two position-limiting members 32, and the first cover piece 42 is provided with a threading hole 421. The side of the first cover piece 42 close to the position-limiting member 32 is arranged at intervals from the position-limiting member 32. In this embodiment, the material of the position-limiting cover 4 is consistent with the material of the sub-skeleton 3. In other embodiments, the first cover piece 42 and the second cover piece 43 can also abut between the two position-limiting members 32.

[0050] Through the above-mentioned arrangement, the limiting space 31 is firstly closed by the cover plate 41, the first cover sheet 42 and the second cover sheet 43. Since the threading hole 421 is provided on the first cover sheet 42, a single-side sealing structure is finally formed, and the creepage distance is increased under the premise of being able to thread the wire, so as to achieve the best insulation effect; the second cover sheet 43 is abutted between the two limiting members 32, and the limiting cover 4 can be frictionally limited to prevent the limiting cover 4 from being separated from the sub-frame 3; the first cover sheet 42 with the threading hole 421 is arranged at intervals from the limiting member 32, and the insulation effect between the terminal and the coil can be improved through air. In particular, the gap between the first cover sheet 42 and the limiting member 32 is less than or equal to 2mm, such as, the gap between the first cover sheet 42 and the limiting member 32 can be 1mm or 2mm, and the present embodiment is preferably 2mm, so as to improve the insulation effect between the terminal and the coil under the premise of ensuring the size of the first cover sheet 42.

[0051] It should be supplemented that the positions of the first cover plate 42 and the second cover plate 43 can be interchanged to adapt to different winding directions, that is, the direction of the threading hole 421 can be selected according to needs.

[0052] In order to further prevent the limit cover 4 from falling off, a limit groove 33 is provided on the side of at least one limit member 32 close to the second cover plate 43, and the limit groove 33 is provided along the axial direction of the stator core 100. A limit strip 431 is provided on the second cover plate 43, and the limit strip 431 is plugged and matched with the limit groove 33. Specifically in this embodiment, the two limit members 32 are provided with a limit groove 33 on the side close to each other, and the limit strip 431 is connected to each limit groove 33 on the second cover plate 43, and a single limit strip 431 is plugged and matched with a single limit groove 33. The limit cover 4 is limited by the cooperation of the limit strip 431 and the limit groove 33, so that the limit cover 4 cannot move along the distribution direction of the first cover plate 42 and the second cover plate 43.

[0053] In addition, at least one of the limiting members 32 is provided with an extension member 37 at one end away from the skeleton body 1, and a limiting block 371 is provided on the limiting member 32. From away from the skeleton body 1 to close to the skeleton body 1, the cross-sectional area of ​​the limiting block 371 perpendicular to the axial direction of the stator core 100 gradually increases, and the limiting cover 4 is abutted between the limiting block 371 and the limiting member 32. Specifically in this embodiment, the limiting member 32 close to the outer ring of the skeleton body 1 is integrally formed with an extension member 37, and the extension member 37 is located at one end away from the skeleton body 1 and extends in a direction away from the skeleton body 1, and a notch 411 is provided on the cover plate 41 at a position corresponding to the extension member 37; the limiting block 371 is integrally formed on a side of the extension member 37 close to the limiting cover 4, and the limiting block 371 is a triangular setting with the tip facing away from the limiting cover 4. Optionally, in some other implementations, an extension member 37 can also be provided on each limiting member 32.

[0054] When installing the limit cover 4, align the first cover plate 42 and the second cover plate 43 with the limit space 31 and squeeze them in the direction toward the sub-skeleton 3, so as to squeeze the limit block 371 through the cover plate 41. When the cover plate 41 passes through the limit block 371, it is abutted between the limit block 371 and the limit member 32. At this time, the limit block 371 limits the limit cover 4 in the axial direction of the skeleton body 1, so that the limit cover 4 cannot be separated from the sub-skeleton 3.

[0055] Furthermore, each sub-frame 3 is provided with a wire inlet 38 along the radial direction of the frame body 1. In this embodiment, two wire inlets 38 are provided on each sub-frame 3 along the circumference of the frame body 1, and the limiter 32 is located between the two wire inlets 38; the two wire inlets 38 are arranged axially symmetrically about the plane where the center of the sub-frame 3 along the circumference of the frame body 1 and the axis of the frame body 1 are located, and the distance between the plane in the previous sentence and the wire inlet 38 corresponds to a central angle of the frame body 1 greater than 20°. The provision of two wire inlets 38 can adapt to different orientations of the threading hole 421. It can be understood that the two wire inlets 38 can allow the winding wire 200 led out of either end of the limiter cover 4 to pass through, thereby improving adaptability; of course, in some other embodiments, if the orientation of the threading hole 421 is single and fixed, the wire inlet 38 can also be provided only at the threading hole 421.

[0056] In addition, each sub-frame 3 is provided with wire embedding grooves 381 at both ends of the wire inlet 38 along the radial direction of the frame body 1, and the wire embedding grooves 381 extend along the axial direction of the frame body 1 to a position close to the winding teeth 2, and the bottom of the wire embedding grooves 381 is a right-angle transition. Figure 3 When the winding wire 200 is led out from the limiting cover 4, it first passes through the wire inlet 38 and is close to the wire embedding groove 381 and then is wound on the winding tooth 2, so that the part of the winding wire 200 between the wire inlet 38 and the winding tooth 2 is embedded in the wire embedding groove 381 as much as possible, that is, the winding wire 200 does not protrude from the surface of the sub-skeleton 3 as much as possible, to prevent the winding wire 200 itself from being scratched with the part embedded in the wire embedding groove 381 during the subsequent winding process, thereby protecting the winding wire 200.

[0057] In order to further guide the winding wire 200, a wire groove 39 is provided at the connection between each sub-frame 3 and the winding tooth 2, and the first turn of the winding wire 200 can be embedded in the wire groove 39. It can be understood that when the winding wire 200 is wound on the winding tooth 2, the first turn is wound inside the wire groove 39, so that the first turn of the winding wire 200 wound on the winding tooth 2 is preliminarily limited to guide the winding wire 200 into the specified position, pave the way for the subsequent winding arrangement, and improve the neatness of the winding.

[0058] It is further configured that at least one winding pole 5 is provided on each sub-skeleton 3. In the present embodiment, a winding pole 5 is integrally formed at both ends of the sub-skeleton 3 along the circumference of the skeleton body 1. Each winding pole 5 is arranged in a T-shape, so that the winding wire 200 can be wound around the winding pole 5 after winding is completed, thereby preventing the coil from becoming loose.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An insulating frame, arranged at the end of a stator core (100) along its axial direction, the insulating frame comprising a frame body (1) and winding teeth (2), a plurality of winding teeth (2) being evenly arranged around the axis of the inner ring of the frame body (1), characterized in that: At least one limiting space (31) is provided on the skeleton body (1) corresponding to each of the winding teeth (2); The interior of each of the limiting spaces (31) can be snap-fitted with a limiting cover (4) made of insulating material. The interior of the limiting cover (4) can accommodate a connecting terminal (6), which is used to connect the two ends of the winding wire (200) and the end of the lead wire (300) to form a connecting end. The limiting cover (4) is provided with at least one threading hole (421), and the threading hole (421) is used for the winding wire (200) and the lead wire (300) to pass through the limiting cover (4), and limits the connecting terminal (6) from moving out of the limiting cover (4).

2. The insulating frame according to claim 1, characterized in that: Two limiting members (32) are arranged on the skeleton body (1) at intervals along its radial direction, the limiting space (31) is formed between the two limiting members (32), and the limiting cover (4) is abutted between the two limiting members (32).

3. The insulating frame according to claim 2, characterized in that: The limiting cover (4) comprises: a cover plate (41), the cover plate (41) being located at one end of the limiting member (32) away from the skeleton body (1) and abutting against the limiting member (32); A first cover sheet (42) and a second cover sheet (43), wherein the first cover sheet (42) and the second cover sheet (43) are arranged at intervals between the two limiting members (32), the distribution directions of the first cover sheet (42) and the second cover sheet (43) are arranged to intersect with the distribution directions of the two limiting members (32) at an angle, and the first cover sheet (42) and / or the second cover sheet (43) are abutted between the two limiting members (32).

4. The insulating frame according to claim 3, characterized in that: The threading hole (421) is formed on the first cover sheet (42), and the first cover sheet (42) is arranged at a distance from the limiter (32) at a side edge close to the limiter (32).

5. The insulating frame according to claim 3, characterized in that: A limiting groove (33) is provided on at least one of the limiting members (32) on a side close to the second cover plate (43), the limiting groove (33) being provided along the axial direction of the skeleton body (1), and a limiting strip (431) is provided on the second cover plate (43), the limiting strip (431) being plug-fitted into the limiting groove (33).

6. The insulating frame according to claim 3, characterized in that: An extension piece (37) is provided on at least one of the limiting members (32) at one end away from the skeleton body (1), and a limiting block (371) is provided on the limiting member (32). From away from the skeleton body (1) to close to the skeleton body (1), the cross-sectional area of ​​the limiting block (371) perpendicular to the axial direction of the stator core (100) gradually increases, and the limiting cover (4) is abutted between the limiting block (371) and the limiting member (32).

7. The insulating skeleton according to any one of claims 1 to 6, characterized in that: A wire inlet (38) is provided on the skeleton body (1) corresponding to each of the threading holes (421); a wire embedding groove (381) is provided at one end of the wire inlet (38) close to the inner ring of the skeleton body (1); and the wire embedding groove (381) extends along the axial direction of the skeleton body (1) toward the winding teeth (2).

8. The insulating skeleton according to any one of claims 1 to 6, characterized in that: The skeleton body (1) is formed by splicing together a plurality of sub-skeletons (3) arranged along the circumference of the stator core (100); along the circumference of the stator core (100), one end of the sub-skeleton (3) is provided with a plug-in component (34), and the other end is provided with a plug-in slot (35); when two adjacent sub-skeletons (3) are spliced ​​together, the plug-in component (34) of the latter sub-skeleton (3) is plugged into and matched with the plug-in slot (35) of the former sub-skeleton (3).

9. A stator, comprising a stator core (100), wherein the inner ring of the stator core (100) is provided with a plurality of core teeth (101) around its axis, wherein: It also includes the insulating skeleton as described in any one of claims 1 to 8, wherein one insulating skeleton is provided at both ends of the stator core (100) along its axial direction, and a plurality of the winding teeth (2) are provided in one-to-one correspondence with a plurality of the core teeth (101).

10. An electric motor, comprising a rotor, characterized in that It also includes the stator as claimed in claim 9, wherein the stator is sleeved on the outer circumference of the rotor.

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