Insulating frame, motor stator, motor and compressor

Abstract

The utility model discloses an insulating frame, a motor stator, a motor and a compressor, and relates to the technical field of motor equipment, the insulating frame is used for the motor stator, the insulating frame comprises a frame body and an outer baffle plate, the frame body is provided with a plurality of winding grooves, the outer baffle plate is connected with the frame body, and the outer baffle plate is provided with a wire inlet groove; the groove wall of at least one wire winding groove is connected to the outer baffle, the wire winding groove connected to the outer baffle is a first wire groove, and the groove walls of the connecting positions of the wire inlet groove and the first wire groove are in smooth transition connection. The utility model aims to ensure that the wire rod accurately enters the wire slot during winding through the insulating frame, thereby reducing the phenomena of wire disorder and displacement of the flat cable, and improving the insulating and voltage-withstanding capabilities of the winding and the stator with the winding.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, and particularly relates to an insulating frame, a motor stator, a motor and a compressor. Background Technique

[0002] At present, the winding methods of concentrated windings mainly include: needle winding, fly fork winding, spindle winding, etc. Spindle winding is suitable for the winding of segmented stators and single-frame windings. During winding, the tooling drives the stator or frame to make a rotational motion, and the wire nozzle drives the enameled wire to make a three-way feeding motion, which can achieve precise wire laying, and the slot fill factor can exceed 90%.

[0003] In the whole winding, the winding of the first turn is particularly important, which determines the tightness and reliability of the wire laying of the whole winding. At present, wire grooves are arranged on the insulating frame to limit the first-turn wire during winding, but there will still be problems of inaccurate wire entry during actual winding, resulting in wire entanglement and wire laying displacement, and the existing winding slot fill factor is relatively low. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose an insulating frame, a motor stator, a motor and a compressor, aiming to ensure that the wire accurately enters the wire groove during winding through the insulating frame, reduce the phenomenon of wire entanglement and wire laying displacement, and improve the slot fill factor of the winding.

[0005] To achieve the above object, the utility model proposes an insulating frame for the stator of a motor, and the insulating frame includes:

[0006] A frame body, wherein the frame body is formed with a plurality of winding grooves; and

[0007] An outer baffle, the outer baffle is connected to the frame body, and the outer baffle is provided with a wire inlet groove;

[0008] The groove wall of at least one of the winding grooves is connected to the outer baffle, and the winding groove connected to the outer baffle is the first wire groove, and the groove wall at the connection of the wire inlet groove and the first wire groove is smoothly transitionally connected.

[0009] In one embodiment, the extending direction of the groove body of the winding groove is the first direction, and the groove body of the wire inlet groove extends along the first direction;

[0010] In the direction away from the first wire groove, the cross-sectional area of the groove body of the wire inlet groove is gradually increased.

[0011] In one embodiment, the groove wall of a part of the wire inlet groove is inclined and inclined in the direction gradually away from the first wire groove;

[0012] And / or, the groove wall of the first wire groove is smoothly transitionally connected to the outer baffle;

[0013] And / or, the wire inlet groove is symmetrically arranged with respect to the first surface. The wire winding groove has a geometric center O, and the distance from O to the first surface is less than or equal to 0.25d, where d is the wire diameter of the coil.

[0014] In one embodiment, the distance between adjacent wire winding grooves is S, the wire diameter of the coil is d, and the range of S is 1.01d to 1.03d;

[0015] And / or, the distance between adjacent wire winding grooves is S, the wire diameter of the coil is d. The first wire groove has a geometric center O1, and the distance between O1 and the plate surface of the outer baffle is d / 2 to S / 2.

[0016] In one embodiment, the distance from the wire inlet groove to the first wire groove along the first direction is L, the distance of the wire inlet groove along its groove depth direction is h, the distance of the first wire inlet groove along its groove width direction is φ, and the wire diameter of the coil is d;

[0017] When h = d / 2, φ is greater than or equal to d.

[0018] In one embodiment, the outer baffle is further provided with a wire inlet and winding post, and the column body of the wire inlet and winding post extends along the first direction;

[0019] The wire diameter of the coil is d. The minimum distance from the wire inlet and winding post to the side of the outer baffle facing the frame body is greater than or equal to d, and the minimum distance from the wire inlet and winding post to the wire inlet groove is greater than or equal to d;

[0020] And / or, the outer baffle is further provided with a wire outlet groove, the wire outlet groove is arranged at an interval from the wire inlet groove, and the groove width of the wire outlet groove is between 0.95d and 1.05d;

[0021] And / or, the outer baffle is further provided with a wire outlet and winding post, and the column body of the wire outlet and winding post extends along the extending direction of the groove body of the wire winding groove;

[0022] And / or, when L = d, h is greater than or equal to d / 2;

[0023] And / or, when L = 2d, h is greater than or equal to d.

[0024] In one embodiment, the frame body includes two side plates and two end plates. The two side plates and the two end plates are respectively arranged in parallel at intervals, and each end plate is located between the two side plates and is connected to the ends of the two side plates;

[0025] The connection between the side plate and the end plate forms an edge, and the wire winding groove forms an arc groove at the edge.

[0026] In one embodiment, the two side plates and the two end plates enclose to form a mounting groove, and the frame body further includes at least one abutting platform;

[0027] The abutting platform is arranged on the side wall of the mounting groove.

[0028] In one embodiment, the abutting platform extends along the depth direction of the mounting groove;

[0029] And / or, the frame body further includes a wedge-shaped strip, the wedge-shaped strip is arranged on the side wall of the mounting groove, the wedge-shaped strip extends along the depth direction of the mounting groove, and the cross-sectional area of the wedge-shaped strip gradually decreases from one end adjacent to the outer baffle to the end far from the outer baffle.

[0030] The present utility model further provides a motor stator, including:

[0031] A stator body, the stator body includes a stator yoke and a plurality of stator teeth;

[0032] A winding, the winding is arranged on the stator teeth;

[0033] The winding includes a coil group and an insulating frame as described above.

[0034] In one embodiment, the coil group includes an incoming line segment, a multi-layer closely arranged segment, and an outgoing line segment;

[0035] The incoming line segment is arranged in the incoming line winding post and the incoming line groove of the outer baffle, the closely arranged segment is arranged on the frame body, and the outgoing line segment is arranged in the outgoing line winding post and the outgoing line groove.

[0036] The present utility model further provides a motor, including the motor stator as described above.

[0037] The present utility model further provides a compressor, including the motor as described above.

[0038] The insulating frame of the technical solution of the present utility model is used for the stator of a motor, including a frame body and an outer baffle, the outer baffle is connected to the frame body, the frame body is formed with a plurality of winding grooves, the groove wall of at least one winding groove is connected to the outer baffle, the outer baffle is provided with an incoming line groove, the groove wall of the incoming line groove adjacent to one end of the first wire groove is smoothly transitionally connected to the groove wall of the first wire groove, the incoming line groove is used to introduce the enameled wire into the winding groove, and the enameled wire is first wound on the first wire groove. By setting the groove wall of the incoming line groove and the groove wall of the first wire groove to be smoothly transitionally connected at the connection, the winding of the coil is smoother and more reliable, ensuring that the wire accurately enters the wire groove, especially the first wire groove, reducing the phenomenon of wire entanglement and wire arrangement displacement, improving the slot filling rate of the winding, and improving the insulation withstand voltage capacity of the winding and the stator with the winding. Description of the Drawings

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0040] Figure 1 Structural schematic diagram of an insulating frame in an embodiment of the present invention;

[0041] Figure 2 For Figure 1 Partial enlarged view of part A in

[0042] Figure 3 Structural schematic diagram of another perspective of the insulating frame in an embodiment of the present invention;

[0043] Figure 4 Structural schematic diagram of yet another perspective of the insulating frame in an embodiment of the present invention;

[0044] Figure 5 Structural schematic diagram of a winding in an embodiment of the present invention.

[0045] Explanation of the reference numerals in the drawings:

[0046] 100, insulating frame; 1, frame body; 1a, installation groove; 11, first side plate; 12, second side plate; 13, upper end plate; 131, jumper step; 1311, jumper guiding surface; 14, lower end plate; 15, winding groove; 151, first wire groove; 152, second wire groove; 16, arc groove; 17, abutting platform; 18, wedge-shaped strip; 2, outer baffle; 2a, thickened part; 21, wire inlet groove; 22, wire outlet groove; 23, wire inlet winding post; 24, wire outlet winding post; 3, inner baffle; 400, winding; 401, coil group; 4011, inlet wire segment; 4012, inlet wire winding segment; 4013, inlet wire groove segment; 4014, densely arranged segment; 4015, outlet wire segment; 4016, outlet wire winding segment; 4017, outlet wire groove segment.

[0047] The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the drawings. Detailed implementation manners

[0048] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0049] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0050] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0051] To achieve the above object, please refer to Figures 1 to 4 As shown, the present invention provides an insulating frame 100 for the stator of a motor. The insulating frame 100 includes a frame body 1 and an outer baffle 2. The frame body 1 is formed with a plurality of winding grooves 15. The outer baffle 2 is connected to the frame body 1, and the outer baffle 2 is provided with an inlet groove 21; the groove wall of at least one winding groove 15 is connected to the outer baffle 2, and the winding groove 15 connected to the outer baffle 2 is the first winding groove 151, and the groove wall at the connection between the inlet groove 21 and the first winding groove 151 is smoothly transitionally connected.

[0052] In this embodiment, the insulating frame 100 is applied to the stator of the motor and is suitable for a tooth-yoke separated stator structure. Specifically, the main structure of the stator forms a plurality of radially distributed stator teeth. A stator yoke sleeved on the stator teeth is arranged on the periphery of the main structure. The stator yoke and the main structure are separable structures. A stator slot is formed between two adjacent stator teeth. Before installing the stator yoke, the insulating frame 100 with the coil winding 400 needs to be installed in the stator slot. By setting the main structure with stator teeth and the stator yoke as separable structures, it is convenient to install the insulating frame 100 winding 400 in two adjacent stator slots, and the insulating frame 100 winding 400 has a higher slot fill factor, that is, it can wind more coils, with higher installation accuracy and higher structural stiffness.

[0053] In this embodiment, the insulating frame 100 includes a frame body 1 and an outer baffle 2. The frame body 1 is the main installation structure of the insulating frame 100 and is also used for winding coils. The frame body 1 is a frame formed by connecting a plurality of side plates. The side plates are thin plate structures so that the coils can be wound on the plate surfaces of the plurality of side plates. At the same time, the outer baffle 2 is connected to the plurality of side plates so that the plane where the plate surface of the side plate is located and the plane where the plate surface of the outer baffle 2 is located are arranged at an angle. The plate surface area of the outer baffle 2 is larger than the area of the region enclosed by the plurality of side plates. When winding the coils on the frame body 1, the outer baffle 2 can be used to limit the coils to prevent the coils from being scattered and separated from the frame body 1.

[0054] At the same time, the insulating frame 100 further includes an inner baffle 3. Both the inner baffle 3 and the outer baffle 2 are thin plate structures. The inner baffle 3 is also connected to the plurality of side plates. The inner baffle 3 and the outer baffle 2 are arranged at intervals, so that the inner baffle 3 and the outer baffle 2 are connected to both sides of the frame body 1. When installing the insulating frame 100 on the stator teeth, the inner baffle 3 is closer to the root of the stator teeth, and the outer baffle 2 is arranged away from the root of the stator teeth, that is, the inner baffle 3 and the outer baffle 2 are arranged at intervals along the radial direction of the stator.

[0055] A winding space is formed between the inner baffle 3, the outer baffle 2 and the frame body 1. After the coils are wound on the frame body 1, they are all located in the winding space. And the winding space is an inverted trapezoidal space with a gradually shrinking width from the side of the outer baffle 2 to the side of the inner baffle 3 to adapt to the stator tooth structure.

[0056] Based on the above embodiments, the plurality of side plates are preferably four side plates, which include two side plates and two end plates. The two side plates and the two end plates are arranged in parallel at intervals. The two end plates are disposed between the two side plates and connected to the edges of the ends of the two side plates. The two side plates are disposed between the two end plates and connected to the edges of the ends of the two end plates. Moreover, the angle between the plane where each side plate is located and the plane where the outer baffle 2 is located is greater than or equal to 90°, and the angle between the plane where each side plate is located and the plane where the inner baffle 3 is located is greater than or equal to 90°, so as to reduce the interference probability between the frame and the coil during the main shaft winding of the insulating frame 100 and ensure the neatness and consistency of the wire arrangement on the frame body 1.

[0057] In this embodiment, as Figure 1 and Figure 2 shown, a plurality of winding grooves 15 are formed on the frame body 1. The cross-section of the winding groove 15 can be arc-shaped, square, V-shaped or other structural forms. The winding groove 15 is disposed on the side plate of the frame body 1, and the extending direction of the groove body of the winding groove 15 is consistent with the length direction of the side plate and the extending direction of the frame body 1. On the two side plates arranged in parallel and at intervals, winding grooves 15 are provided, and the winding grooves 15 on the two side plates are symmetrically arranged along the plane parallel to the side plates.

[0058] It can be understood that by providing the winding groove 15 on the plate surface of the frame body 1, when the frame body 1 is wound, the position of the enameled wire in the winding space can be effectively guided, and the wound winding 400 can be reliably limited, especially the first layer of coil wound on the frame body 1, to prevent the entire winding 400 from slipping and loosening.

[0059] In this embodiment, as Figures 1 to 4 shown, a wire inlet groove 21 is formed on the outer baffle 2. The depth direction of the wire inlet groove 21 extends towards the thickness direction of the outer baffle 2, and at the same time, the notch of the wire inlet groove 21 faces the frame body 1. Specifically, at one end of the outer baffle 2 along the extending direction of the frame body 1, a thickened portion 2a is provided. The thickness of the thickened portion 2a is greater than the thickness of other regions of the outer baffle 2, and the thickness direction of the thickened portion 2a extends away from the frame body 1. The wire inlet groove 21 is provided in the thickened portion 2a. By providing the thickened portion 2a, a wire inlet groove 21 with a larger width and depth can be provided on the originally thinner outer baffle 2, thereby ensuring the stability of the overall size and structure of the wire inlet groove 21 and facilitating the processing and forming of the wire inlet groove 21.

[0060] Moreover, the wire inlet groove 21 is used to introduce the enameled wire into the winding space. After the external enameled wire enters from the wire inlet groove 21, it then enters the winding space and is wound around the frame body 1.

[0061] In this embodiment, the wire winding groove 15 connected to the outer baffle 2 is the first wire winding groove 151, that is, among at least one wire winding groove 15, the one closest to the outer baffle 2 is the first wire winding groove 151. At the groove wall of the wire inlet groove 21 at one end adjacent to the first wire winding groove 151, it is smoothly and transitionally connected to the groove wall of the first wire winding groove 151. That is, one end of the wire inlet groove 21 is located at the top end plate of the frame body 1, and is smoothly and transitionally connected to the first wire inlet groove 21 at the top end plate. This smooth and transitional connection means that a smooth curved surface or straight surface is formed at the connection between the groove wall of the wire inlet groove 21 and the groove wall of the first wire winding groove 151, so as to ensure that when the first turn of the winding 400 is introduced from the wire inlet groove 21 into the wire winding space, it can be wound in the first wire winding groove 151 immediately, and ensure that the first turn of the winding 400 is more smoothly and reliably introduced from the wire inlet groove 21 into the first wire winding groove 151, preventing the enameled wire from being bent due to the edge or interfering with the second layer of winding 400, and also being able to wind more coils, improving the slot fill factor of the insulating frame 100.

[0062] The insulating frame 100 of this technical solution includes a frame body 1 and an outer baffle 2. The outer baffle 2 is connected to the frame body 1. The frame body 1 is formed with at least one wire winding groove 15. The groove walls of at least one wire winding groove 15 are connected to the outer baffle 2. The outer baffle 2 is provided with a wire inlet groove 21. The wire winding groove 15 connected to the outer baffle 2 is the first wire winding groove 151. The groove wall of the wire inlet groove 21 at one end adjacent to the first wire winding groove 151 is smoothly and transitionally connected to the groove wall of the first wire winding groove 151. The wire inlet groove 21 is used to introduce the enameled wire onto the wire winding groove 15, and the enameled wire is first wound on the first wire winding groove 151. By setting the groove walls of the wire inlet groove 21 and the first wire winding groove 151 to be smoothly and transitionally connected at the connection, the winding of the coil is made more smooth and reliable, ensuring that the wire accurately enters the wire groove 21, especially the first wire winding groove 151, reducing the phenomenon of wire entanglement and wire arrangement displacement, improving the slot fill factor of the winding 400, and improving the insulation withstand voltage ability of the winding 400 and the stator having the winding 400.

[0063] In one embodiment, as Figure 2 shown, the extending direction of the groove body of the wire winding groove 15 is the first direction, and the groove body of the wire inlet groove 21 extends along the first direction; in the direction away from the first wire winding groove 151, the cross-sectional area of the groove body of the wire inlet groove 21 is gradually increasing.

[0064] In this embodiment, the extending direction of the groove body of the wire winding groove 15 is the same as the length direction of the side plate and the extending direction of the frame body 1, all being the first direction. At the same time, the extending direction of the groove body of the wire inlet groove 21 also extends substantially along the first direction. Meanwhile, from the end of the wire inlet groove 21 adjacent to the first wire groove 151 to the end far from the first wire groove 151, the cross-sectional area of the groove body of the wire inlet groove gradually increases; specifically, the wire inlet groove 21 has a groove depth direction extending along the thickness direction of the thickening part 2a and a groove width direction perpendicular to the groove depth direction. The wire inlet groove 21 extends substantially along the first direction, and as the wire inlet groove 21 moves away from the first wire groove 151, at least one of the groove depth and the groove width of the wire inlet groove 21 begins to increase, such as the groove depth gradually deepens, and / or the groove width gradually widens, so as to increase the cross-sectional area of the groove body of the wire inlet groove 21.

[0065] It can be understood that by setting the wire inlet groove 21 such that its cross-sectional area gradually increases from the end adjacent to the first wire groove 151 to the end far from the first wire groove 151, the end of the wire inlet groove 21 far from the first wire groove 151 is wider, which can facilitate the enameled wire to enter the wire inlet groove 21, that is, it is convenient for the wire inlet groove 21 to collect wire. And the end adjacent to the first wire groove 151 gradually shrinks, which can enable the wire inlet groove 21 to more accurately position the winding 400 and more accurately dock with the first wire groove 151, so that the wire can enter the first wire groove 151 accurately, reliably, smoothly and quickly, preventing interference, looseness or dislocation during the winding of the winding 400.

[0066] In one embodiment, the groove walls of some of the wire inlet grooves 21 are inclined and inclined along the direction gradually away from the first wire groove 151; it can be understood that the groove walls of the wire inlet grooves 21 are arranged to gradually move away from the frame body 1 (the first wire groove 151) from the end adjacent to the first wire groove 151 to the end far from the first wire groove 151 in the extending direction of the groove body thereof, so that the depth of the wire outlet end at the connection of the wire inlet groove 21 and the first wire groove 151 is shallower, and the depth of the wire inlet end at the end far from the first wire groove 151 is deeper, which can more smoothly introduce the winding 400 from the wire inlet groove 21 into the first wire groove 151 and prevent wire damage.

[0067] Optionally, the groove wall of the first wire groove 151 is smoothly connected to the outer baffle 2; it can be understood that by setting the groove wall of the first wire groove 151 and the plate surface of the outer baffle 2 to be smoothly connected, a continuous plane or curved surface is formed between the plate surface of the outer baffle 2 and the groove wall of the first wire groove 151, so as to ensure the smoothness and reliability of the first turn of the winding 400 entering the first wire groove 151, as well as the smoothness of the enameled wire from the wire inlet groove 21 to the first wire groove 151, effectively reducing the possible wire entanglement and interference during coil winding.

[0068] Optionally, the wire inlet groove 21 is symmetrically arranged with respect to the first surface. The winding groove 15 has a geometric center O, and the distance from O to the first surface is less than or equal to 0.25d, where d is the wire diameter of the coil. It can be understood that the wire inlet groove 21 is symmetrically arranged with respect to the first surface, the first surface is parallel to the plane where the side plate is located, and the winding groove 15 has a geometric center O. If the groove cross-section of the winding groove 15 is a part of a circle, the geometric center O is the center of the circle. If the cross-section of the winding groove 15 is V-shaped, the geometric center O is the center of the inscribed circle of the V shape. Among them, the distance from the geometric center O to the first surface is less than or equal to 0.25d, which can ensure that the first turn of the winding 400 is more smoothly and reliably introduced from the wire inlet groove 21 into the first wire groove 151, preventing the wire from bending or interfering with the second-layer winding 400.

[0069] In one embodiment, the distance between adjacent winding grooves 15 is S, the wire diameter of the coil is d, and the range of S is 1.01d to 1.03d. It can be understood that when the enameled wire is wound, certain tensile deformation will occur, resulting in a change in the wire diameter of the enameled wire. Among them, 1.01d to 1.03d is the tolerance interval of the winding stretch rate. Through this design tolerance, the distance between adjacent winding grooves 15 can be reasonably adjusted to prevent the problem that the first turn of the wire cannot be properly inserted due to the deviation of the wire diameter after stretching. At the same time, the tolerance rate of the wire diameter change of different windings 400 can also be improved.

[0070] Optionally, the distance between adjacent winding grooves 15 is S, the wire diameter of the coil is d, the first wire groove 151 has a geometric center O1, and the distance from O1 to the plate surface of the outer baffle 2 is d / 2 to S / 2. It can be understood that the distance between the geometric center O1 of the first wire groove 151 and the outer baffle 2 is greater than or equal to half of the wire diameter, which can ensure that the first turn of the winding coil can be reliably limited between the first wire groove 151 and the outer baffle 2 to improve the success rate of the first turn of the coil entering the first wire groove 151. At the same time, the distance between the geometric center O1 of the first wire groove 151 and the outer baffle 2 is less than or equal to half of the distance between adjacent winding grooves 15, which can also avoid the problems of wire arrangement disorder and wire arrangement displacement that may be caused by too large a distance, so that the enameled wire can accurately enter the first wire groove 151 during winding.

[0071] In one embodiment, the distance from the wire inlet groove 21 to the first wire groove 151 in the first direction is L, the distance of the wire inlet groove 21 in its groove depth direction is h, the distance of the first wire inlet groove 21 in its groove width direction is φ, and the wire diameter of the coil is d; h = d / 2, and φ is greater than or equal to d.

[0072] It can be understood that at this time, half of the winding 400 is located in the wire inlet groove 21 and half is located in the first wire groove 151. By setting the groove width to be slightly larger than the diameter of the winding 400, the position of the winding 400 can be better positioned and there will be no interference.

[0073] In one embodiment, as Figures 1 to 4 shown, the outer baffle 2 is further provided with an incoming wire winding post 23, and the column body of the incoming wire winding post 23 extends along the first direction; the wire diameter of the coil is d, the minimum distance from the incoming wire winding post 23 to the side of the outer baffle 2 facing the frame body 1 is greater than or equal to d, and the minimum distance from the incoming wire winding post 23 to the incoming wire groove 21 is greater than or equal to d.

[0074] In this embodiment, the incoming wire winding post 23 is arranged on the outer baffle 2, the incoming wire winding post 23 and the incoming wire groove 21 are arranged at intervals, and at the same time, the incoming wire winding post 23 also extends along the first direction, and the incoming wire winding post 23 is in a columnar, rod-shaped or bar-shaped structure.

[0075] It can be understood that when winding the winding 400, the winding 400 will first wind 1 to 5 turns on the incoming wire winding post 23 to fix the enameled wire and ensure the stability and tightness of the subsequent winding 400. Then the winding will be introduced from the incoming wire winding post 23 into the incoming wire groove 21. Among them, it is set that the minimum distance from the incoming wire winding post 23 to the side of the outer baffle 2 facing the frame body 1 is greater than or equal to d, and the minimum distance from the incoming wire winding post 23 to the incoming wire groove 21 is greater than or equal to d, which can ensure that the 1 to 5 turns of winding wound on the incoming wire winding post 23 will not occupy the positions in the incoming wire groove 21 and the winding space, and avoid interference between the winding wound on the incoming wire winding post 23 and the enameled wire that has been or is being wound.

[0076] Optionally, the outer baffle 2 is further provided with an outgoing wire groove 22, the outgoing wire groove 22 is arranged at intervals with the incoming wire groove 21, and the groove width of the outgoing wire groove 22 is between 0.95d and 1.05d; at the same time, the outer baffle 2 is further provided with an outgoing wire winding post 24, and the column body of the outgoing wire winding post 24 extends along the extending direction of the groove body of the winding groove 15.

[0077] It can be understood that the outgoing wire winding post 24 is arranged on the periphery of the outgoing wire groove 22 of the outer baffle 2. The incoming wire winding post 23 and the outgoing wire winding post 24 can be injection molding features integrally provided with the insulating frame 100, or metal wiring terminals integrally injection molded with the insulating frame 100 to adapt to different electrical connection methods.

[0078] Meanwhile, after the wire winding on the frame body 1 is completed, the wire will be led out from the wire outlet groove 22. The outgoing wire segment 4015 of the wire is led out laterally upward from one side of the frame body 1. After moving towards the center of the winding 400, it is guided by the wire outlet groove 22 to the wire outlet winding post 24, and winds around the wire outlet winding post 24 for 1 to 5 turns to complete the winding of the winding 400. Further, the wire outlet groove 22 is designed on the side of the wire outlet winding post 24 close to the wire inlet groove 21, which can tighten the outgoing wire segment 4015 winding 400 towards the central plane of the winding 400, thereby avoiding problems such as loose outgoing wire or reduced electrical clearance between adjacent windings 400 caused by a gap between the outgoing wire and the winding 400. Winding the outgoing wire segment around the winding post can reliably fix the outgoing wire and avoid problems such as loose or displaced outgoing wire caused by subsequent processes, resulting in poor insulation withstand voltage and other problems.

[0079] Optionally, when L = d, h is greater than or equal to d / 2; it can be understood that when L = d2, a slot depth greater than half of the wire diameter can effectively prevent the incoming wire from interfering with the second-layer winding 400.

[0080] Optionally, when L = 2d, h is greater than or equal to d. It can be understood that when L = 2d, a slot depth greater than one wire diameter can effectively prevent the incoming wire from interfering with the third-layer winding 400.

[0081] In an embodiment, as Figure 1 and Figure 3 shown, the frame body 1 includes two side plates and two end plates. The two side plates and the two end plates are respectively arranged in parallel at intervals. Each end plate is located between the two side plates and is connected to the ends of the two side plates; the connection between the side plate and the end plate forms an edge, and the wire winding groove 15 forms an arc-shaped groove 16 at the edge.

[0082] In this embodiment, the two side plates are respectively the first side plate 11 and the second side plate 12. The first side plate 11 and the second side plate 12 are parallel and relatively spaced apart. The first side plate 11 and the second side plate 12 are thin plate structures. The two end plates are respectively the upper end plate 13 and the lower end plate 14. The upper end plate 13 and the lower end plate 14 are parallel and relatively spaced apart, so that the upper end plate 13 and the lower end plate 14 are located between the first side plate 11 and the second side plate 12 and are connected to the side edges at the ends of the first side plate 11 and the second side plate 12. Similarly, the first side plate 11 and the second side plate 12 are located between the upper end plate 13 and the lower end plate 14 and are connected to the end side edges of the upper end plate 13 and the lower end plate 14, so that the first side plate 11, the lower end plate 14, the second side plate 12, and the upper end plate 13 are connected in sequence to form the frame body 1 and enclose an installation groove 1a.

[0083] In this embodiment, a first edge is formed at the connection between the first side plate 11 and the upper end plate 13, a second edge is formed at the connection between the first side plate 11 and the lower end plate 14, a third edge is formed at the connection between the lower end plate 14 and the second side plate 12, and a fourth edge is formed at the connection between the second side plate 12 and the upper end plate 13. At the same time, arc-shaped grooves 16 are formed on the first edge, the second edge, the third edge, and the fourth edge of the wire inlet groove 21.

[0084] It can be understood that by providing the arc-shaped grooves 16 on the edges, the spatial position of the enameled wire can be effectively guided during winding, and the wound winding 400 can be reliably limited to prevent the winding 400 from slipping. At the same time, it will not cause excessive constraint on the winding path of the winding 400, increasing the freedom of operations such as jumper wires.

[0085] At the same time, a jumper step 131 is further provided on the upper end plate 13. The jumper step 131 is provided with a jumper guiding surface 1311. The winding groove 15 connected to the first wire groove 151 on the first side plate 11 is the second wire groove 152. The centroid of the second wire groove 152 is O2. At the same time, the centroid of the first wire groove 151 located on the second side plate 12 is O1. Then, the jumper guiding surface 1311 is substantially parallel to the plane K formed by O1 and O2, and the distance between the jumper guiding surface 1311 and the plane K is between d / 2 and S / 2. By providing the jumper step 131, a reliable guiding path is provided for the winding 400 when jumping from the first turn to the second turn, improving the reliability of precise wire arrangement.

[0086] In one embodiment, as Figure 1 and Figure 3 shown, two side plates and two end plates enclose to form an installation groove 1a. The frame body 1 further includes at least one abutting platform 17; the abutting platform 17 is provided on the side wall of the installation groove 1a.

[0087] In this embodiment, the frame body 1 is formed by two side plates and two end plates connected in sequence, enclosing to form an installation groove 1a located in the center of the frame body 1. The installation groove 1a is used for mating connection with the stator core. For example, the stator teeth of the stator core can be inserted into the installation groove 1a and tightly connected to the side wall of the installation groove 1a. Among them, the abutting platform 17 is provided on the side wall of the installation groove 1a and on the end plate. Among them, the extending direction of the abutting platform 17 can be set parallel or at an angle, which is not limited here.

[0088] It can be understood that when the stator teeth are inserted into the installation groove 1a, the abutting platform 17 can limit and position the stator core extending into the installation groove 1a, and leave a gap for the stator core at the corner of the installation groove 1a, avoiding interference between the stator core and the frame body 1 at the corner inside the installation groove 1a, so as to ensure the smooth installation of the stator core as a whole and improve the manufacturing tolerance of the frame body 1.

[0089] In one embodiment, as Figure 1 and Figure 3 shown, the abutting platform 17 extends along the depth direction of the installation groove 1a; it can be understood that the abutting platform 17 extending along the depth direction of the installation groove 1a means that the abutting platform 17 extends and is arranged along the direction of the connection line between the inner baffle 3 and the outer baffle 2. When the stator core extends into the installation groove 1a, the stator core always abuts against the abutting platform 17 and is arranged at a parallel interval with the side wall of the installation groove 1a, so as to improve the tightness of the connection between the stator core and the insulating frame 100.

[0090] Optionally, as Figure 3 shown, the frame body 1 further includes a wedge strip 18. The wedge strip 18 is arranged on the side wall of the installation groove 1a and extends along the depth direction of the installation groove 1a. The cross-sectional area of the wedge strip 18 gradually decreases from the end adjacent to the outer baffle 2 to the end far from the outer baffle 2; it can be understood that generally, the inner baffle 3 is closer to the axis of the stator core than the outer baffle 2, that is, closer to the root of the stator tooth. When the stator core is inserted into the installation groove 1a, it first passes through the inner baffle 3 and then extends towards the outer baffle 2. To ensure the tightness of the connection between the stator core and the frame body 1, the wedge strip 18 is provided, and the cross-sectional area of the wedge strip 18 is smaller at the position adjacent to the inner baffle 3 than at the position adjacent to the outer baffle 2. Thus, during the process of the stator core extending into the installation groove 1a, the stator core can be gradually clamped, so that the stator core is tightly assembled in the groove of the installation groove 1a, and the bonding force between the stator core and the insulating frame 100 is increased.

[0091] The present utility model also proposes a motor stator, as Figure 5 shown, the motor stator includes a stator main body and a winding 400. The winding is arranged on the stator teeth. The stator main body includes a stator yoke and a plurality of stator teeth. The winding 400 includes a coil group 401 and the above-mentioned insulating frame 100. The specific structure of the insulating frame 100 refers to the foregoing embodiments. Since this winding 400 adopts all the technical solutions of the foregoing all embodiments, it at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, and will not be elaborated herein one by one.

[0092] In one embodiment, the coil group 401 includes an incoming line segment 4011, a multi-layer closely arranged segment 4014, and an outgoing line segment 4015; the incoming line segment 4011 is arranged in the incoming line winding post 23 and the incoming line groove 21 of the outer baffle 2, the closely arranged segment 4014 is arranged on the frame body 1, and the outgoing line segment 4015 is arranged in the outgoing line winding post 24 and the outgoing line groove 22.

[0093] In this embodiment, the coil group 401 is wound around the frame body 1. The incoming wire segment 4011 in the coil group 401 includes an incoming wire winding segment 4012 and an incoming wire groove segment 4013. The incoming wire winding segment 4012 is wound around the incoming wire winding post 23 of the frame body 1, and the incoming wire groove segment 4013 is arranged in the incoming wire groove 21. The multi-layer densely wound segment 4014 is wound around the frame body 1, that is, successively wound around the two side plates and the two end plates, and the multi-layer densely wound segment 4014 is wound layer by layer around the frame body 1. Preferably, the number of layers of the densely wound segment 4014 is an even number. At the same time, the outgoing wire segment 4015 includes an outgoing wire lead-out end, an outgoing wire winding segment 4016, and an outgoing wire groove segment 4017. Among them, the outgoing wire groove segment 4017 is arranged in the outgoing wire groove 22, and the outgoing wire winding segment 4016 is wound around the outgoing wire winding post 24.

[0094] It can be understood that the wire nozzle of the spindle winding machine winds the enameled wire around the incoming wire winding post 23 to form the incoming wire winding segment 4012 to fix the incoming wire, and then guides the enameled wire through the incoming wire groove 21 to form the incoming wire groove segment 4013, and then enters the first wire groove 151 through the incoming wire groove 21.

[0095] The wire nozzle introduces the enameled wire into the first wire groove 151 through the incoming wire groove 21, and winds the densely wound segment 4014 according to the wiring diagram. The densely wound segment 4014 includes the first layer winding 400, the second layer winding 400... the i-th layer winding 400, the (i + 1)-th layer winding 400... and the outermost layer winding 400 that are successively connected end to end and nested outward. Among them, the odd-layer windings 400 are roughly wound one by one along the frame body 1 from the outer baffle 2 side to the inner baffle 3 side, and the even-layer windings 400 are roughly wound one by one along the frame body 1 from the inner baffle 3 side to the outer baffle 2 side.

[0096] Preferably, the number of layers N of the winding 400 is an even number, and the even-layer windings 400 are wound from the inside to the outside. When winding to the last layer winding 400 and the outermost layer winding 400, the last turn of the outgoing wire returns to the outer baffle 2 side, and there is no need to cross multiple turns of the outgoing wire, which is beneficial to improving the tightness and stability of the outgoing wire.

[0097] Specifically, the wire nozzle introduces the enameled wire into the first wire groove 151 through the incoming wire groove 21, extends downward along the extending direction of the groove body of the first wire groove 151, that is, the first direction, passes through the arc-shaped groove 16 at the first edge and then winds around the end plate at the bottom, and then is introduced into the first wire groove 151 of the other side plate through the arc-shaped groove 16 at the second edge, and after passing through the arc-shaped groove 16 provided at the third edge, is introduced into the second wire groove 15 provided on the jumper guiding surface 1311 of the jumper step 131 to complete the winding of the first turn of the first layer winding 400.

[0098] The winding paths of the first turn of the winding 400 on the first side plate 11, the lower end plate 14, and the second side plate 12 are all perpendicular or parallel to the first direction. Only the winding path on the upper end plate 13 is inclined along the jumper guiding surface 1311. The wire nozzle moves the enameled wire a certain distance along the radially inner side, forming the first turn of the jumper.

[0099] Continuously, the wire nozzle introduces the enameled wire into the second winding groove 15 of the first side plate 11, successively passes through the second edge arc groove 16, the lower end plate 14, the third edge arc groove 16, the second winding groove 15 of the second side plate 12, the fourth edge arc groove 16, and then guides it into the arc groove 16 of the first edge along the first turn of the jumper, completing the winding of the second turn of the winding 400.

[0100] And so on, until the last turn of the winding 400 of the first layer is led out from the Nth winding groove 15 of the second side plate 12, the winding of the first layer of the winding 400 is completed. All jumpers of the first layer of the winding 400 are arranged on the side of the upper end plate 13, and the jumper path is arranged substantially parallel to the jumper guiding surface 1311.

[0101] At the first side plate 11 and the second side plate 12, virtual winding grooves 15 are formed between adjacent turns of the first layer of the winding 400 and between the winding 400 and the third side wall or the inner baffle 3 for guiding the precise positioning of the second layer of the winding 400. Continuously, the wire nozzle bypasses the arc groove 16 of the fourth edge with the enameled wire according to the wiring diagram and guides it to the position of the first turn of the second layer of the winding 400. The second layer of the winding 400 is wound from the inner baffle side to the outer baffle 2 side.

[0102] The position of the first turn of the second layer of the winding 400 can be determined by the third side wall and the winding 400, or by the inner baffle 3 and the winding 400 according to different wiring diagrams, or by any two adjacent turns of the first layer of the winding 400. The winding method of the second layer of the winding 400 is substantially the same as that of the first layer of the winding 400. On the first side plate 11, the second side plate 12, and the lower end surface, its winding path is parallel or perpendicular to the axial direction, and the jumper between adjacent turns is completed on the upper end surface, and the jumper direction is opposite to that of the first layer of the winding 400.

[0103] For the winding 400 of this embodiment, all jumpers are located on the side of the upper end plate 13, and the winding directions of the first side plate 11 and the second side plate 12 on the side located in the groove are both parallel to the axial direction, which can ensure that the winding 400 in the groove is wound completely according to the wiring diagram, ensuring the consistency of the production of the winding 400 and the consistency of the phase-to-phase insulation gap.

[0104] And, after the outermost winding 400 is wound, the wire nozzle leads out the enameled wire from the side of the second side plate 12 towards the upper end plate 13. Then it moves towards the wire outlet groove 22 to form a wire outlet lead-out section that tightens towards the center of the winding 400, clips the winding 400 into the wire outlet groove 22 to form a wire outlet groove section 4017, and then winds 1 to 5 turns around the wire outlet winding post 24 to form a wire outlet winding section 4016. The wire outlet lead-out section tightens the wire towards the inner side of the winding 400 to avoid generating a gap between the wire and the winding 400; the wire outlet groove section 4017 initially fixes the wire, and the wire outlet winding section 4016 further improves the reliability of the wire fixation.

[0105] The present invention also proposes a motor, which includes a rotor assembly and the above-mentioned motor stator. The rotor assembly includes a rotor core and a permanent magnet provided on the rotor core. The rotor assembly is arranged in the center of the stator assembly, and an air gap is formed between the rotor assembly and the stator. The specific structure of this motor stator refers to the foregoing embodiments. Since this motor adopts all the technical solutions of all the foregoing embodiments, it at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which will not be elaborated here one by one.

[0106] The present invention also proposes a compressor, which includes the above-mentioned motor. The specific structure of this motor refers to the foregoing embodiments. Since this compressor adopts all the technical solutions of all the foregoing embodiments, it at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which will not be elaborated here one by one. Among them, the compressor can be a compressor with the above-mentioned motor, as well as an air conditioner, a washing machine, a refrigeration device, a new energy vehicle, an electric bicycle, etc. with a compressor.

[0107] The above is only an exemplary embodiment of the present invention, and it does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An insulating frame for the stator of an electric machine, characterized in that, The insulating frame includes: A frame body, where a plurality of wire winding grooves are formed in the frame body; and An outer baffle, which is connected to the frame body, and an inlet wire groove is provided on the outer baffle; The groove wall of at least one of the wire winding grooves is connected to the outer baffle. The wire winding groove connected to the outer baffle is the first wire groove, and the groove wall at the connection of the inlet wire groove and the first wire groove is smoothly transitionally connected.

2. The insulating frame according to claim 1, wherein The extending direction of the groove body of the wire winding groove is the first direction, and the groove body of the inlet wire groove extends along the first direction; In the direction away from the first wire groove, the cross-sectional area of the groove body of the inlet wire groove is gradually increasing; 3. The insulating frame according to claim 2, characterized in that, The groove wall of a part of the inlet wire groove is inclined and inclined along the direction gradually away from the first wire groove; And / or, the groove wall of the first wire groove is smoothly transitionally connected to the outer baffle; And / or, the inlet wire groove is symmetrically arranged with respect to the first plane. The wire winding groove has a geometric center O, and the distance from O to the first plane is less than or equal to 0.25d, where d is the wire diameter of the coil.

4. The insulating frame according to claim 1, characterized in that, The distance between adjacent wire winding grooves is S, the wire diameter of the coil is d, and the range of S is 1.01d to 1.03d; And / or, the distance between adjacent wire winding grooves is S, the wire diameter of the coil is d, the first wire groove has a geometric center O1, and the distance between O1 and the plate surface of the outer baffle is d / 2 to S / 2.

5. The insulating frame according to claim 2, wherein, The distance from the inlet wire groove along the first direction to the first wire groove is L, the distance of the inlet wire groove along its groove depth direction is h, the distance of the first inlet wire groove along its groove width direction is φ, and the wire diameter of the coil is d; When h = d / 2, φ is greater than or equal to d.

6. The insulating frame according to claim 5, characterized in that, The outer baffle is further provided with an inlet wire winding post, and the column body of the inlet wire winding post extends along the first direction; The wire diameter of the coil is d, the minimum distance from the inlet wire winding post to the side of the outer baffle facing the frame body is greater than or equal to d, and the minimum distance from the inlet wire winding post to the inlet wire groove is greater than or equal to d; And / or, the outer baffle is further provided with an outlet wire groove, the outlet wire groove is arranged at an interval from the inlet wire groove, and the groove width of the outlet wire groove is between 0.95d and 1.05d; And / or, the outer baffle is further provided with an outlet wire winding post, and the column body of the outlet wire winding post extends along the extending direction of the groove body of the wire winding groove; And / or, when L = d, h is greater than or equal to d / 2; And / or, when L = 2d, h is greater than or equal to d.

7. The insulating frame according to any one of claims 1 to 6, characterized in that, The frame body includes two side plates and two end plates. The two side plates and the two end plates are respectively arranged in parallel at intervals, and each end plate is located between the two side plates and connected to the ends of the two side plates; An edge is formed at the connection of the side plate and the end plate, and an arc groove is formed at the edge by the wire winding groove; 8. The insulating frame according to claim 7, wherein, The two side plates and the two end plates enclose to form an installation groove, and the frame body further includes at least one abutting platform; The abutting platform is arranged on the side wall of the installation groove; 9. The insulating frame according to claim 8, characterized in that, The abutting platform extends along the depth direction of the installation groove; And / or, the frame body further includes a wedge strip, the wedge strip is arranged on the side wall of the installation groove, the wedge strip extends along the depth direction of the installation groove, and the cross-sectional area of the wedge strip is gradually reduced from one end adjacent to the outer baffle to the end far from the outer baffle.

10. A motor stator, characterized in that, Comprising: A stator body, the stator body includes a stator yoke and a plurality of stator teeth; A winding, the winding is arranged on the stator teeth; The winding includes a coil group and an insulating frame according to any one of claims 1 to 9.

11. The motor stator according to claim 10, characterized in that, The coil group includes an incoming line segment, a multi-layer close-packed segment, and an outgoing line segment; The incoming line segment is arranged in the incoming line winding post and the incoming line groove of the outer baffle, the close-packed segment is arranged on the frame body, and the outgoing line segment is arranged in the outgoing line winding post and the outgoing line groove.

12. A motor, characterized in that, Comprising a motor stator according to any one of claims 10 or 11.

13. A compressor, characterized in that, Comprising a motor according to claim 12.

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