Stator insulation frame, stator assembly, motor and industrial robot

Abstract

The present invention discloses a stator insulation frame, a stator assembly, a motor and an industrial robot, and relates to the field of motor technology. The stator insulation frame is applied to a stator core having a plurality of teeth, and the stator insulation frame includes a plurality of frame units, which are distributed along the circumference of the stator core and are connected one-to-one with the plurality of teeth. Each frame unit includes an outer frame, an inner frame and a winding portion, and the winding portion is connected between the outer frame and the inner frame. The outer wall of the winding portion is provided with a plurality of positioning ribs, and the plurality of positioning ribs are arranged at intervals along the radial direction of the stator core, and a wire slot for positioning the enameled wire is defined between two adjacent positioning ribs. The present invention not only reduces the difficulty of winding, but also improves the winding efficiency, and can also ensure that the coil formed by winding is uniform, improves the slot full rate, reduces the possibility of coil sliding, and improves the structural stability of the stator assembly.

Description

Technical Field

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

[0002] In the traditional stator winding process, the stator insulation frame is widely used to assist winding to improve the efficiency and accuracy of winding. However, during the winding process, the coil wound on the winding part is prone to slipping, which not only reduces the winding efficiency and increases the difficulty of winding, but also leads to uneven winding, resulting in loose and irregular coils, which in turn leads to a decrease in the stator slot fill rate. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a stator insulation frame, which can position the enameled wire during winding, reduces the difficulty of winding, and improves the winding efficiency, thereby improving the uniformity of the coil formed by winding.

[0004] The present invention also provides a stator assembly, a motor and an industrial robot comprising the stator insulation frame.

[0005] According to the stator insulation frame of the first aspect of the present invention, the stator insulation frame is applied to a stator core having a plurality of teeth, and the stator insulation frame comprises: a plurality of frame units, the plurality of frame units are distributed along the circumference of the stator core, and are connected one-to-one with the plurality of teeth, each of the frame units comprises an outer frame portion, an inner frame portion and a winding portion, the winding portion is connected between the outer frame portion and the inner frame portion, an outer side wall of the winding portion is provided with a plurality of positioning ribs, the plurality of positioning ribs are arranged at intervals along the radial direction of the stator core, and a wire groove for positioning the enameled wire is defined between two adjacent positioning ribs.

[0006] The stator insulation frame according to the embodiment of the present invention has at least the following beneficial effects:

[0007] The stator insulation frame of the embodiment of the present invention arranges multiple frame units along the circumference of the stator core so that the multiple frame units can be connected to the multiple tooth portions in a one-to-one correspondence, wherein each frame unit includes an outer frame portion, an inner frame portion and a winding portion, and the winding portion is connected between the outer frame portion and the inner frame portion, and the outer frame portion and the inner frame portion limit the coil wound on the winding portion, thereby reducing the risk of the coil detaching from the frame unit; the outer side wall of the winding portion is provided with a plurality of positioning ribs, wherein a wire groove for positioning the enameled wire is defined between two adjacent positioning ribs, and the wire groove can facilitate the operator to quickly locate the winding position, and wind the wire along the wire groove to form a coil, which not only reduces the difficulty of winding, but also improves the winding efficiency. In addition, it can also ensure that the coil formed by winding is uniform and improve the slot fill rate; the positioning ribs can limit the coil in the wire groove, reduce the possibility of coil sliding, and improve the structural stability of the stator assembly.

[0008] According to some embodiments of the present invention, a positioning step is provided at at least one end of the winding portion along the radial direction of the stator core, and a first wall surface for positioning the enameled wire is provided at the end of the positioning step away from the winding portion, and compared with the outer wall of the winding portion, the first wall surface is higher than the end surface of the positioning rib away from the winding portion.

[0009] According to some embodiments of the present invention, along the radial direction of the stator core, one of the multiple positioning ribs closest to the inner frame portion is a first positioning rib, and along the radial direction of the stator core, the positioning step is provided at one end of the winding portion close to the inner frame portion, and a second wall is provided on the end of the positioning step facing the outer frame portion, an edge of one end of the second wall is transitionally connected to an end surface of the first positioning rib facing away from the winding portion, and an edge of the other end is transitionally connected to the first wall, and the end surface of the first positioning rib facing away from the winding portion cooperates with the second wall to position the enameled wire.

[0010] According to some embodiments of the present invention, a width of the first wall surface along the radial direction of the stator core is greater than or equal to 3 mm and less than or equal to 6 mm.

[0011] According to some embodiments of the present invention, along the circumference of the stator core, the cross-section of the wire slot is rectangular to match the flat winding.

[0012] According to some embodiments of the present invention, the minimum radial width of the wire slot along the stator core is greater than or equal to 1.5 mm and less than or equal to 5 mm, and the minimum circumferential depth of the wire slot along the stator core is greater than or equal to 0.3 mm and less than or equal to 1 mm.

[0013] According to some embodiments of the present invention, along the axial direction of the stator core, at least one end of the outer frame portion is provided with a first wire platform and two second wire platforms, the two second wire platforms are located on both sides of the first wire platform along the circumferential direction of the stator core, the second wire platforms are spaced apart from the first wire platforms, and a wire groove is defined between the second wire platforms and the first wire platforms.

[0014] According to some embodiments of the present invention, a minimum width of the wire slot along the circumferential direction of the stator core is greater than or equal to 3 mm.

[0015] According to some embodiments of the present invention, the end surface of the outer frame portion facing the inner frame portion and the end surface of the inner frame portion facing the outer frame portion are parallel to each other, the end surface of the inner frame portion facing away from the outer frame portion is an arc surface, and along the radial direction of the stator core, the minimum thickness of the inner frame portion is greater than or equal to 2 mm.

[0016] According to the stator assembly of the second aspect embodiment of the present invention, it includes the stator insulation frame described in the first aspect embodiment and a plurality of core units, the plurality of core units are connected to form the stator core, each of the core units is provided with a tooth portion, and the stator insulation frame is connected to the tooth portion.

[0017] The stator assembly according to the embodiment of the present invention has at least the following beneficial effects:

[0018] The stator assembly adopts the stator insulation frame of the first aspect embodiment, and a plurality of positioning ribs are provided on the outer side wall of the winding part of the stator insulation frame, wherein a wire groove for positioning the enameled wire is defined between two adjacent positioning ribs, and the wire groove can facilitate the operator to quickly locate the winding position, and wind the wire along the wire groove to form a coil, which not only reduces the difficulty of winding, but also improves the winding efficiency, thereby improving the production efficiency of the stator assembly. In addition, it can also ensure that the coil formed by winding is uniform and improve the slot fill rate; the positioning ribs can limit the coil in the wire groove, reduce the possibility of coil sliding, improve the structural stability of the stator assembly, and improve the reliability of the stator assembly.

[0019] According to some embodiments of the present invention, each of the frame units includes two frames, each of which is provided with a receiving groove. The two frames are respectively inserted at both ends of the core unit along the axial direction of the stator core. A guide angle is provided at the opening of the receiving groove, and the guide angle is used to guide the core unit into the receiving groove.

[0020] The motor according to the third aspect of the present invention comprises the stator assembly described in the second aspect of the present invention.

[0021] The motor according to the embodiment of the present invention has at least the following beneficial effects:

[0022] The motor adopts the stator assembly of the second aspect of the embodiment. By optimizing the structure of the stator insulation frame, not only the winding difficulty is reduced, but also the winding efficiency is improved, thereby improving the production efficiency of the motor. It can also ensure that the coil formed by the winding is uniform, improve the slot fill rate, and then improve the power density of the motor and improve the performance of the motor. In addition, the structural stability of the stator assembly can also be improved, so that the reliability of the motor is improved and the service life of the motor is extended.

[0023] An industrial robot according to an embodiment of a fourth aspect of the present invention comprises the motor described in an embodiment of the third aspect.

[0024] The industrial robot according to the embodiment of the present invention has at least the following beneficial effects:

[0025] The industrial robot adopts the motor of the third aspect of the embodiment, which increases the slot fill rate and thus the power density of the motor, thereby ensuring that the industrial robot can maintain efficient and stable operation in various complex tasks; by improving the reliability of the motor, the stability of the industrial robot is improved, the failure rate of the industrial robot is reduced, and the maintenance cost is reduced.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0028] Figure 1 is an overall schematic diagram of a stator assembly according to an embodiment of the present invention;

[0029] Figure 2 A front view of a stator assembly according to an embodiment of the present invention;

[0030] Figure 3 An assembly diagram of a stator insulation frame and a core unit according to an embodiment of the present invention;

[0031] Figure 4 A front view of a stator insulation frame according to an embodiment of the present invention;

[0032] Figure 5 for Figure 4 A partial enlarged view of the middle A;

[0033] Figure 6 A top view of a stator insulation frame according to an embodiment of the present invention;

[0034] Figure 7 is an overall schematic diagram of a frame body according to an embodiment of the present invention;

[0035] Figure 8 The figure is a schematic diagram of the exploded structure of the stator insulation frame and the core unit according to an embodiment of the present invention.

[0036] Figure Number:

[0037] Stator assembly 1000;

[0038] Stator insulation frame 10;

[0039] Frame unit 100; outer frame 110; first wire platform 111; first inner wall 1111; second wire platform 112; second inner wall 1121; avoidance position 1122; wire groove 113; first end surface 114; support portion 115; limit portion 116; inner frame 120; second end surface 121; third end surface 122; winding portion 130; outer wall 131; first side wall 1311; second side wall 1312; positioning rib 132; first positioning rib 1321; wire groove 133; positioning step 134; first wall surface 1341; second wall surface 1342; frame body 140; receiving groove 141; guide angle 142;

[0040] Stator core 20 ; core unit 201 ; tooth portion 2011 ; yoke portion 2012 . DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0044] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0045] It is understandable that the surface of the winding part of the stator insulation frame is usually designed to be smooth to reduce the resistance during winding. However, this smooth surface characteristic also means that it has a very limited effect on the coil limiting effect. When winding, the coil can easily slide on the winding part, making the winding operation unstable, which not only increases the difficulty of winding and reduces the efficiency of winding, but also affects the winding quality, resulting in uneven winding, which in turn causes the stator slot fill rate to decrease, affecting the performance level of the motor. After the winding is completed, the coil formed by the winding will also be displaced due to factors such as vibration, causing the coil to be loose and irregular, reducing the structural stability of the stator assembly and reducing the reliability of the motor.

[0046] To this end, some embodiments of the present invention provide a stator insulation frame 10, which is suitable for a motor, and specifically refers to Figures 1 to 8 The stator insulation frame 10 is shown for illustration.

[0047] Reference Figure 1 and Figure 2 As shown, in an embodiment of the present invention, a stator insulation frame 10 is applied to a stator core 20 having a plurality of tooth portions 2011. It can be understood that the stator core 20 of this embodiment can be an integrated structure, which includes a yoke 2012 and a plurality of tooth portions 2011, and the tooth portions 2011 are connected to the frame unit 100; the stator core 20 can also be a split structure, specifically, the stator core 20 includes a plurality of core units 201, each core unit 201 includes a tooth portion 2011 and a yoke 2012, the plurality of core units 201 are interconnected through the yoke 2012, and the tooth portions 2011 are connected to the frame unit 100.

[0048] Reference Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the stator core 20 is annular, and the stator insulation frame 10 includes: a plurality of frame units 100, the plurality of frame units 100 are distributed along the circumference of the stator core 20 and are interconnected, thereby forming an annular structure matching the stator core 20, and the plurality of frame units 100 are connected to the plurality of tooth portions 2011 in a one-to-one correspondence.

[0049] It can be understood that in the embodiment of the present invention, the stator insulation frame 10 can be a split structure. During assembly, the frame unit 100 can be mounted on the tooth portion 2011 to form an assembly body, and then multiple assembly bodies can be interconnected through the yoke 2012 and wound to form a ring structure to achieve assembly of the stator assembly 1000, which greatly reduces the assembly difficulty of the stator insulation frame 10 and improves the assembly efficiency of the stator insulation frame 10.

[0050] Reference Figure 3 and Figure 4As shown, in the embodiment of the present invention, each frame unit 100 includes an outer frame portion 110, an inner frame portion 120 and a winding portion 130. It should be noted that when the stator insulation frame 10 is assembled, the outer frame portion 110 is located on the outer side of the ring, the inner frame portion 120 is located on the inner side of the ring, and one end of the winding portion 130 is connected to the outer frame portion 110, and the other end is connected to the inner frame portion 120. In this embodiment, the outer frame portion 110 and the inner frame portion 120 can respectively limit the coil wound on the winding portion 130, so that the coil is kept in the winding portion 130, reducing the risk of detachment from the frame unit 100.

[0051] Among them, refer to Figure 3 and Figure 4 As shown, in the embodiment of the present invention, the outer side wall 131 of the winding part 130 is protruding to form a plurality of positioning ribs 132, and the positioning ribs 132 are integrally formed with the winding part 130. It should be noted that the outer side wall 131 of the winding part 130 includes a first side wall 1311 and a second side wall 1312, the first side wall 1311 is the wall surface of the winding part 130 along the axial direction of the stator core 20, and the second side wall 1312 is the wall surface of the winding part 130 along the circumferential direction of the stator core 20. In one example, the first side wall 1311 is provided with a plurality of positioning ribs 132; in another example, the second side wall 1312 is provided with a plurality of positioning ribs 132; in another example, the first side wall 1311 and the second side wall 1312 are respectively provided with a plurality of positioning ribs 132, and the plurality of positioning ribs 132 on the first side wall 1311 and the plurality of positioning ribs 132 on the second side wall 1312 are connected to each other one by one.

[0052] Reference Figure 3 and Figure 4 As shown, in the embodiment of the present invention, a plurality of positioning ribs 132 are arranged at intervals along the radial direction of the stator core 20. Based on this, a wire groove 133 can be formed between two adjacent positioning ribs 132, and the wire groove 133 is suitable for accommodating the enameled wire. Specifically, during winding, the wire groove 133 can play a role of auxiliary positioning, which can not only facilitate the operator to quickly locate the winding position and facilitate accurate winding, but also play a guiding role, which is convenient for the operator to wind along the wire groove 133, thereby improving the accuracy of winding; it can also play a role of limiting, reducing the sliding of the enameled wire on the winding part 130, reducing the difficulty of winding, improving the winding efficiency and winding quality, making the coil formed by winding uniform and regular, and improving the slot full rate of the stator assembly 1000. After the winding is completed, the wire groove 133 can also play a role of limiting the coil wound therein, reducing the possibility of displacement of the coil due to external factors such as vibration, so that the coil can always remain compact and uniform, thereby improving the structural stability of the stator assembly 1000, and then improving the reliability of the motor.

[0053] It is understandable that, in order to perform winding for round wires, in the embodiment of the present invention, the slot wall of the wire slot 133 may be an arc surface. Specifically, along the circumference of the stator core 20, the cross-sectional shape of the wire slot 133 may be an arc or a semicircle, which is not limited in this embodiment. In addition, the slot wall of the wire slot 133 may also be a plane, and the cross-sectional shape of the wire slot 133 may also be a trapezoid, a square, etc. The cross-sectional shape of the wire slot 133 may be selected and set according to the shape and size of the enameled wire.

[0054] It is understandable that, compared to directly digging grooves on the outer side wall 131 of the winding part 130, that is, setting recessed wire grooves 133 on the first side wall 1311 and the second side wall 1312 of the winding part 130, this embodiment provides protruding positioning ribs 132, and the wire grooves 133 are formed by surrounding adjacent positioning ribs 132, so that fewer turns can be wound during winding, which not only improves the winding efficiency, but also reduces the use of wire and reduces material costs. In addition, the setting of the positioning ribs 132 provides a clear winding path and a limiting structure for the coil, so that the operator can more easily control the winding of the coil, reduce errors and corrections during the winding process, and reduce the error rate.

[0055] In the actual production process, when the first layer of winding is performed, it is difficult to locate the position of the winding due to the lack of support and positioning reference of the coil formed by the previous winding. After winding, the first layer of coils is also prone to displacement, which makes it difficult to effectively control the accuracy of the first layer of winding, reducing the winding efficiency of the first layer of coils. In addition, as the basis of the entire winding, the accuracy of the first layer of coils directly affects the quality and efficiency of subsequent windings. If the winding control of the first layer of coils is not accurate, it will not only reduce the winding efficiency of subsequent windings, but also affect the winding quality, such as loose and irregular coils. Such uncompact and irregular coils will reduce the slot fill rate, thereby having a negative impact on the overall performance of the motor.

[0056] For this purpose, refer to Figure 3 and Figure 4As shown, in the embodiment of the present invention, along the radial direction of the stator core 20, at least one end of the winding part 130 is provided with a positioning step 134, and the positioning step 134 is protruding from the first side wall 1311 of the winding part 130. The positioning step 134 can play a role in positioning the lower wire position for the winding of the first layer of coils. In one example, the inner end of the winding part 130 is provided with a positioning step 134, and the lower wire position of the first layer of coils is the position corresponding to the positioning step 134. In this embodiment, the winding can be performed from the inside to the outside; in another example, the outer end of the winding part 130 is provided with a positioning step 134, and the lower wire position of the first layer of coils is the position corresponding to the positioning step 134. In this embodiment, the winding can be performed from the outside to the inside; in another example, the inner end and the outer end of the winding part 130 are respectively provided with positioning steps 134, and the lower wire position of the first layer of coils is the position corresponding to the positioning step 134. In this embodiment, the winding can be performed from the inside to the outside or from the outside to the inside.

[0057] Reference Figure 3 and Figure 4 As shown, in the embodiment of the present invention, the positioning step 134 is provided with a first wall surface 1341, and the first wall surface 1341 is located at one end of the positioning step 134 away from the winding portion 130. The first wall surface 1341 is arranged in parallel with the first side wall 1311, and compared with the first side wall 1311 of the winding portion 130, the first wall surface 1341 is higher than the end surface of the positioning rib 132 away from the winding portion 130, that is, the first wall surface 1341 is further away from the first side wall 1311 than the end surface of the positioning rib 132. It can be understood that when winding, the first wall surface 1341 in the positioning step 134 that is more protruding than the positioning rib 132 can play a role in positioning. Specifically, when the operator goes offline, the enameled wire can be aligned with the first wall surface 1341 and wound along the first wall surface 1341, thereby forming the first layer of coils.

[0058] The setting of the positioning step 134 not only facilitates the operator to quickly locate the offline position, reduces the difficulty of winding the first layer of coils, and improves the winding efficiency of the first layer of coils, but also enables the winding position of the first layer of coils to be accurate, reduces the risk of subsequent coils being loose, irregular, and other problems, helps to ensure the winding quality and winding efficiency of subsequent windings, thereby improving the production efficiency and reliability of the stator assembly 1000, and also helps to improve the slot fill rate, thereby improving the power density of the motor and improving the performance of the motor.

[0059] It can be understood that, since the height of the first wall surface 1341 in the circumferential direction of the stator core 20 is higher than the positioning rib 132, the first wall surface 1341 is also higher than the slot wall of the wire slot 133. In order to smoothly transition to the winding of the subsequent relatively lower coil after the first layer of coils are wound, taking the positioning step 134 being provided at one end of the winding portion 130 close to the inner frame portion 120 as an example, refer to Figure 4 and Figure 5 As shown, in an embodiment of the present invention, along the radial direction of the stator core 20, the innermost one of the multiple positioning ribs 132 is the first positioning rib 1321, that is, the first positioning rib 1321 is the one closest to the inner frame portion 120, and the positioning step 134 is located between the first positioning rib 1321 and the inner frame portion 120.

[0060] Specifically, combined Figure 5 It can be understood that, in the embodiment of the present invention, the positioning step 134 is further provided with a second wall 1342, and the second wall 1342 is located at one end of the positioning step 134 facing the outer frame portion 110. The second wall 1342 can extend along the circumference of the stator core 20, and one end edge thereof is transitionally connected with the end face of the first positioning rib 1321 away from the winding portion 130, and the other end edge is transitionally connected with the first wall 1341. It can be understood that after completing the winding of the first layer of coils, the operator can align the end face of the first positioning rib 1321 away from the winding portion 130, and wind along the end face of the first positioning rib 1321. In this process, the end face of the first positioning rib 1321 away from the winding portion 130 and the second wall 1342 can jointly play the role of positioning the enameled wire, thereby improving the winding efficiency and winding accuracy.

[0061] After completing the winding of the end face of the first positioning rib 1321 away from the winding part 130, the operator can wind the wire groove 133 located outside the first positioning rib 1321. It can be understood that when the winding of the first layer of coils is completed and it is necessary to transition to the subsequent lower wire groove 133, winding the end face of the first positioning rib 1321 can guide the coil to descend smoothly, so that the coil can smoothly transition from a high place to a low place, which not only ensures the uniformity of the winding, but also greatly improves the smoothness of the winding, making the entire winding process smoother, improving both the winding efficiency and the winding quality.

[0062] It is understandable that the inventors learned during the experiment that if the width of the first wall 1341 along the radial direction of the stator core 20 is too small, it will not effectively limit the enameled wire when the first layer of coil is wound, which may cause the coil to deviate; if the width of the first wall 1341 is too large, although it provides a stronger limiting effect, it will increase the difficulty of transitioning to subsequent winding, making the overall winding process uneven. For this reason, refer to Figure 5 As shown, in the embodiment of the present invention, the width of the first wall surface 1341 along the radial direction of the stator core 20 is W1, which satisfies: 3mm (millimeter) ≤ W1 ≤ 6mm (millimeter). When the width W1 of the first wall surface 1341 is within this size range, it can effectively limit the winding of the first layer of coils and more smoothly transition to the subsequent winding at a lower position.

[0063] It is understood that in order to carry out winding for flat wire, refer to Figure 3 As shown, in the embodiment of the present invention, along the circumference of the stator core 20, the cross-sectional shape of the wire slot 133 is rectangular, so that the slot shape of the wire slot 133 matches the flat wire, so that the flat wire can effectively fill the wire slot 133, improve the compactness of the coil, and thus improve the slot fill rate. It should be noted that one end of the rectangle is provided with an opening for the enameled wire to pass through. In addition, the matching of the slot shape of the wire slot 133 with the flat wire can more fully limit the coil in the wire slot 133, further reducing the possibility of displacement of the coil.

[0064] In one example, the cross-sectional shape of the wire groove 133 is a rectangle with four right angles; in another example, the cross-sectional shape of the wire groove 133 is a rectangle with two right angles and the other two corners being arc transitions; in another example, the cross-sectional shape of the wire groove 133 is a rectangle with four arc transitions.

[0065] It is understandable that the minimum width of the wire slot 133 along the radial direction of the stator core 20 and the minimum depth of the wire slot 133 along the circumferential direction of the stator core 20 determine the limiting performance of the wire slot 133. The inventor learned during the experiment that if the minimum width of the wire slot 133 is too small, it will not only increase the difficulty of winding in the wire slot 133, but also cause the slot wall of the wire slot 133 to squeeze the coil; if the minimum width of the wire slot 133 is too large, the coil will have a large displacement space, and the wire slot 133 will not be able to play a limiting role. If the minimum depth of the wire slot 133 is too small, the wire slot 133 will not be able to completely cover the coil, and the coil will easily detach from the wire slot 133; if the minimum depth of the wire slot 133 is too large, the number of winding turns will increase unnecessarily, which will not only increase the time and material cost required for winding, but also reduce the production efficiency of the stator assembly 1000.

[0066] For this purpose, refer to Figure 5 As shown, in the embodiment of the present invention, the minimum width of the wire slot 133 along the radial direction of the stator core 20 is W2, which satisfies: 1.5mm (millimeter) ≤ W2 ≤ 5mm (millimeter); the minimum depth of the wire slot 133 along the circumferential direction of the stator core 20 is D, which satisfies: 0.3mm (millimeter) ≤ D ≤ 1mm (millimeter). When the minimum width W2 of the wire slot 133 and the minimum depth D of the wire slot 133 are within this size range, it can ensure that the winding difficulty is low, the wire slot 133 can also meet the limit requirements, and at the same time can save time and material costs.

[0067] Reference Figure 4 and Figure 6As shown, in the embodiment of the present invention, the outer frame 110 is provided with a first wire platform 111 and a second wire platform 112 at at least one end along the axial direction of the stator core 20, wherein two second wire platforms 112 are provided, and along the circumferential direction of the stator core 20, the two second wire platforms 112 are located on both sides of the first wire platform 111, and the second wire platform 112 is arranged at intervals from the first wire platform 111, and a wire groove 113 for the enameled wire to pass through is defined between the two. The first wire platform 111 and the second wire platform 112 respectively play the role of supporting the winding passing through the wire groove 113, wherein, in order to ensure the strength of the first wire platform 111, the first wire platform 111 is projected in a convex shape in the axial direction of the stator core 20. In order to facilitate the enameled wire passing through the wire groove 113, an end of the second wire platform 112 close to the wire groove 113 is provided with an avoidance position 1122, and the avoidance position 1122 is formed on the outer side of the second wire platform 112.

[0068] Reference Figure 6 As shown, in the embodiment of the present invention, the end surface of the first line platform 111 facing the second line platform 112 is the first inner wall 1111, the end surface of the second line platform 112 facing the first line platform 111 is the second inner wall 1121, and the first inner wall 1111 and the second inner wall 1121 are the groove walls of the wire groove 113. In the present embodiment, the frame unit 100 is made by injection molding, and in order to facilitate demolding, the first inner wall 1111 and the second inner wall 1121 are inclined. Specifically, in order to ensure the demolding effect, the angle between the first inner wall 1111 and the axial direction of the stator core 20 is b1, which satisfies: b1≥2°; the angle between the second inner wall 1121 and the axial direction of the stator core 20 is b2, which satisfies: b2≥2°. It should be noted that in the present embodiment, b1 and b2 can be the same or different, and the present embodiment does not limit this.

[0069] Reference Figure 7 As shown, in the embodiment of the present invention, the outer frame portion 110 includes a support portion 115 and a stop portion 116, wherein one end of the support portion 115 is connected to the end of the winding portion 130, and the other end is extended along the circumferential direction of the stator core 20 to form a platform structure capable of supporting the yoke portion 2012. One end of the stop portion 116 is connected to the support portion 115, and the other end is extended along the axial direction of the stator core 20 and in a direction away from the support portion 115. In this embodiment, since the stop portion 116 needs to support the enameled wire, based on this, in order to ensure the strength of the stop portion 116, the thickness of the stop portion 116 along the radial direction of the stator core 20 is greater than the thickness of the support portion 115.

[0070] It is understandable that the inventors learned during the experiment that if the minimum width of the wire slot 113 along the circumferential direction of the stator core 20 is too small, it is difficult for the enameled wire to pass through the wire slot 113. Figure 7As shown, in the embodiment of the present invention, the minimum width of the wire groove 113 is W3, which satisfies: W3 ≥ 3 mm (millimeter). When the minimum width W3 of the wire groove 113 meets this size range, it can ensure that the enameled wire can pass through the wire groove 113 smoothly.

[0071] Reference Figure 4 As shown, in the embodiment of the present invention, the end face of the outer frame portion 110 facing the inner frame portion 120 is the first end face 114, the end face of the inner frame portion 120 facing the outer frame portion 110 is the second end face 121, and the end face of the inner frame portion 120 facing away from the outer frame portion 110 is the third end face 122. In this embodiment, the first end face 114 and the second end face 121 are parallel to each other, so as to cooperate with the coil wound on the winding portion 130 to limit the position, ensure that the coil is arranged compactly and orderly, so that the coil is arranged evenly, thereby improving the slot fill rate.

[0072] Reference Figure 4 As shown, in the embodiment of the present invention, the end surface of the inner frame portion 120 facing away from the outer frame portion 110 is an arc surface, and the thickness of the inner frame portion 120 along the radial direction of the stator core 20 can be uneven or uniform. Taking the uneven thickness of the inner frame portion 120 as an example, combined with Figure 4 It can be understood that the inner frame 120 has a large thickness at both ends along the circumference of the stator core 20 and a small thickness in the middle, and the minimum thickness of the inner frame 120 is in the middle of the inner frame 120. In order to ensure the strength of the inner frame 120, the minimum thickness of the inner frame 120 is H, satisfying: H ≥ 2 mm (millimeter).

[0073] The embodiment of the present invention further provides a stator assembly 1000 , comprising the stator insulation frame 10 of the above embodiment and a plurality of core units 201 , wherein the plurality of core units 201 are connected to form a stator core 20 , and each core unit 201 is provided with a tooth portion 2011 .

[0074] The stator assembly 1000 of this embodiment is provided with a plurality of positioning ribs 132 on the outer side wall 131 of the winding portion 130 of the stator insulation frame 10, wherein a wire groove 133 for positioning the enameled wire is defined between two adjacent positioning ribs 132, and the wire groove 133 can facilitate the operator to quickly locate the winding position, and wind the wire along the wire groove 133 to form a coil, which not only reduces the difficulty of winding, but also improves the winding efficiency, thereby improving the production efficiency of the stator assembly 1000, and in addition, it can also ensure that the coil formed by winding is uniform and improve the slot fill rate; the positioning rib 132 can limit the coil in the wire groove 133, reduce the possibility of coil sliding, improve the structural stability of the stator assembly 1000, and improve the reliability of the stator assembly 1000.

[0075] Since the stator assembly 1000 adopts all the technical solutions of the stator insulation frame 10 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0076] Reference Figure 8 As shown, in an embodiment of the present invention, the frame unit 100 is a split structure. Specifically, each frame unit 100 includes two frames 140, and the frame 140 is a semi-open structure, which is provided with a receiving groove 141 suitable for accommodating the core unit 201. The two frames 140 are respectively inserted at the two ends of the core unit 201 along the axial direction of the stator core 20. During assembly, the two ends of the core unit 201 can be respectively inserted into the receiving grooves 141 of the two frames 140, thereby completing the assembly. Based on this, in order to improve the assembly efficiency, the opening of the receiving groove 141 is provided with a guide angle 142 for guiding the core unit 201 to enter the receiving groove 141. Specifically, the guide angle 142 is provided between the groove wall of the receiving groove 141 and the end face of the frame 140 facing the core unit 201.

[0077] An embodiment of the present invention further provides a motor, comprising the stator assembly 1000 of the above embodiment. Specifically, the motor further comprises a rotor assembly, and the rotor assembly is arranged at the center of the stator assembly 1000 .

[0078] The motor of this embodiment optimizes the structure of the stator insulation frame 10, which not only reduces the difficulty of winding, but also improves the winding efficiency, thereby improving the production efficiency of the motor, and can also ensure that the coils formed by winding are uniform, improve the slot fill rate, and then improve the power density of the motor and improve the performance of the motor; in addition, the structural stability of the stator assembly 1000 can also be improved, so that the reliability of the motor is improved and the service life of the motor is extended.

[0079] Since the motor adopts all the technical solutions of the stator assembly 1000 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described in detail here.

[0080] The embodiment of the present invention further provides an industrial robot, including the motor of the above embodiment, which can be a servo motor, a stepper motor, a DC motor, an AC motor, etc. Specifically, taking the servo motor as an example, in this embodiment, the industrial robot includes a mechanical arm, and the servo motor is used to drive the movement of each joint of the mechanical arm. The servo motor is driven to operate by the servo driver, thereby driving the mechanical arm to move.

[0081] The industrial robot of this embodiment improves the power density of the motor by increasing the slot fill rate, thereby ensuring that the industrial robot can maintain efficient and stable operation in various complex tasks; by improving the reliability of the motor, the stability of the industrial robot is improved, the failure rate of the industrial robot is reduced, and the maintenance cost is reduced.

[0082] Since the industrial robot adopts all the technical solutions of the motor of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described in detail here.

[0083] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A stator insulation frame, applied to a stator core having a plurality of teeth, characterized in that: The stator insulation frame comprises: A plurality of frame units, wherein the plurality of frame units are distributed along the circumference of the stator core and are connected one-to-one with the plurality of tooth portions, each of the frame units comprises an outer frame portion, an inner frame portion and a winding portion, the winding portion being connected between the outer frame portion and the inner frame portion, the outer side wall of the winding portion is provided with a plurality of positioning ribs, the plurality of positioning ribs are arranged at intervals along the radial direction of the stator core, a wire groove for positioning the enameled wire is defined between two adjacent positioning ribs, the cross-sectional shape of the wire groove along the circumference of the stator core is rectangular so that the groove shape of the wire groove matches the flat wire, the outer side wall of the winding portion comprises a first side wall, the first side wall is the wall surface of the winding portion along the axial direction of the stator core, at least one end of the winding portion along the radial direction of the stator core is provided with a positioning step, the lower wire position of the first layer of coils is the At a position corresponding to the positioning step, an end of the positioning step away from the winding part is provided with a first wall for positioning the enameled wire, the first wall is arranged parallel to the first side wall, and compared with the outer side wall of the winding part, the first wall is higher than the end face of the positioning rib away from the winding part, along the radial direction of the stator core, one of the multiple positioning ribs closest to the inner frame part is the first positioning rib, and along the radial direction of the stator core, the positioning step is arranged at an end of the winding part close to the inner frame part, and the positioning step is provided with a second wall at an end facing the outer frame part, the edge of one end of the second wall is transitionally connected with the end face of the first positioning rib away from the winding part, and the edge of the other end is transitionally connected with the first wall, and the end face of the first positioning rib away from the winding part cooperates with the second wall to position the enameled wire.

2. The stator insulation frame according to claim 1, characterized in that: A width of the first wall surface along the radial direction of the stator core is greater than or equal to 3 mm and less than or equal to 6 mm.

3. The stator insulation frame according to claim 1, characterized in that: Along the circumference of the stator core, the cross-section of the wire slot is rectangular.

4. The stator insulation frame according to claim 1, characterized in that: The minimum width of the wire slot along the radial direction of the stator core is greater than or equal to 1.5 mm and less than or equal to 5 mm, and the minimum depth of the wire slot along the circumferential direction of the stator core is greater than or equal to 0.3 mm and less than or equal to 1 mm.

5. The stator insulation frame according to claim 1, characterized in that: Along the axial direction of the stator core, at least one end of the outer frame is provided with a first wire platform and two second wire platforms, the two second wire platforms are located on both sides of the first wire platform along the circumferential direction of the stator core, the second wire platform is spaced apart from the first wire platform, and a wire groove is defined between the second wire platform and the first wire platform.

6. The stator insulation frame according to claim 5, characterized in that: The minimum width of the wire slot along the circumferential direction of the stator core is greater than or equal to 3 mm.

7. The stator insulation frame according to claim 1, characterized in that: The end surface of the outer frame portion facing the inner frame portion and the end surface of the inner frame portion facing the outer frame portion are parallel to each other, the end surface of the inner frame portion facing away from the outer frame portion is an arc surface, and along the radial direction of the stator core, the minimum thickness of the inner frame portion is greater than or equal to 2 mm.

8. A stator assembly, characterized in that: include: The stator insulation frame according to any one of claims 1 to 7; A plurality of core units are connected to form the stator core, each of the core units is provided with a tooth portion, and the stator insulation frame is connected to the tooth portion.

9. The stator assembly according to claim 8, characterized in that Each of the frame units includes two frames, each of which is provided with a receiving groove. The two frames are respectively inserted at both ends of the core unit along the axial direction of the stator core. A guide angle is provided at the opening of the receiving groove, and the guide angle is used to guide the core unit into the receiving groove.

10. A motor, characterized in that: Comprising the stator assembly according to claim 8 or 9.

11. An industrial robot, characterized in that: The motor comprising the motor described in claim 10.

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