stator assembly, motor and compressor

Abstract

This invention discloses a stator assembly, a motor, and a compressor, relating to the field of motor technology. The stator assembly includes a stator core, windings, and constraint components. The stator core has multiple stator teeth. The windings include multiple coils wound on the stator teeth. The constraint components include a support base and multiple constraint members disposed on the support base, with the constraint members correspondingly positioned between adjacent coils and respectively pressing against the adjacent coils. This invention can suppress vibration and reduce noise during motor operation.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a stator assembly, a motor, and a compressor. Background Technology

[0002] The electric motor is an important component of the compressor. It uses alternating current to generate a rotating magnetic field in the stator, which in turn generates induced current and electromagnetic torque in the rotor, driving the rotor to rotate. The rotor drives the compressor crankshaft to rotate, realizing the reciprocating motion of the piston in the compression mechanism, so that refrigerant or air is continuously drawn in, compressed and discharged, completing the compression cycle.

[0003] When the compressor is running, the alternating current will generate an electromagnetic force through the coil. The direction and magnitude of the electromagnetic force will change periodically. However, the direction of the electromagnetic force generated by the coil at each stator tooth is different, which will cause the coil at different positions to vibrate irregularly, and may even excite the entire stator assembly to vibrate, generating a lot of noise. Summary of the Invention

[0004] The main objective of this invention is to provide a stator assembly designed to suppress vibration and reduce noise during motor operation.

[0005] To achieve the above objectives, the stator assembly proposed in this invention includes: The stator core has multiple stator teeth; The winding includes a plurality of coils respectively wound on the plurality of stator teeth; and The constraint component includes a support base and a plurality of constraint members disposed on the support base. The plurality of constraint members are correspondingly disposed between two adjacent coils and respectively press against the adjacent coils.

[0006] In one embodiment of this application, the support base is disposed at one axial end of the stator core, and the constraint member extends from one axial end of the stator core toward the other axial end.

[0007] In one embodiment of this application, the support base is configured as an annular structure coaxial with the stator core; a plurality of the constraint members are arranged at intervals along the circumference of the support base.

[0008] In one embodiment of this application, a stator slot is formed between two adjacent stator teeth. The stator assembly further includes an insulating frame, which includes an annular bracket and a plurality of slot insulating portions disposed on the annular bracket. The annular bracket is disposed at the axial end of the stator core. The plurality of slot insulating portions are inserted one-to-one into the plurality of stator slots, and the plurality of coils are respectively wound around the plurality of slot insulating portions. The support base is detachably fixed to the insulating frame.

[0009] In one embodiment of this application, the support base is fastened and fixed to the insulating frame.

[0010] In one embodiment of this application, a winding portion is provided between two adjacent slot insulation portions. In the radial direction of the annular bracket, a first wire-blocking portion and a second wire-blocking portion are respectively provided at both ends of the winding portion. The first wire-blocking portion is connected to the slot insulation portion, and the second wire-blocking portion is connected to the annular bracket. The support base is disposed opposite to the winding portion, and the support base is engaged with at least one of the first wire-blocking portion and the second wire-blocking portion.

[0011] In one embodiment of this application, the annular bracket has a cable routing groove around the second cable blocking portion, the second cable blocking portion has a protrusion on the side facing the cable routing groove, and the outer periphery of the support base has a plurality of fasteners, the fasteners engaging with the protrusion.

[0012] In one embodiment of this application, a plurality of the fasteners and a plurality of the restraints are arranged alternately around the periphery of the support base.

[0013] In one embodiment of this application, the radial ends of the support base are respectively connected to the first baffle portion and the second baffle portion.

[0014] In one embodiment of this application, the constraint member extends radially outward from the tip of the stator tooth along the stator core to the inner peripheral wall of the annular bracket.

[0015] In one embodiment of this application, the stator assembly includes two insulating frames, which are respectively disposed at opposite ends of the stator core, and the support base cooperates with either of the insulating frames.

[0016] In one embodiment of this application, the radial dimension of the constraint gradually decreases from the support seat in a direction away from the support seat; And / or, the constraint member is a plate-like structure, and the corner of the end of the constraint member facing away from the support base is provided with an arc-shaped chamfer.

[0017] In one embodiment of this application, the stator assembly includes two sets of constraint components, which are respectively disposed at opposite ends of the stator core.

[0018] To achieve the above objectives, this application also provides an electric motor, including a rotor and the stator assembly described above, wherein the rotor and the stator assembly are driven together.

[0019] To achieve the above objectives, this application also provides a compressor, including a compression component and the aforementioned motor.

[0020] In the stator assembly of this invention, the winding includes multiple coils wound on multiple stator teeth. By setting a constraint component, which includes a support base and multiple constraint members, the constraint members are respectively disposed between two adjacent coils. The two adjacent coils are pressed and limited by the opposite side walls of the constraint members, which can enhance the stability of the coil structure. In this way, the tangential vibration of the coil and the stator teeth can be effectively suppressed, and static friction can be generated when the coil is subjected to radial electromagnetic force, thereby reducing the radial vibration of the coil. Thus, the vibration reduction and noise reduction of the whole machine can be achieved.

[0021] In addition, in this embodiment, multiple constraint components are installed on the support base, and multiple constraint components can be installed at the gaps between corresponding adjacent coils at one time, which can realize integral assembly, simplify the assembly steps, and improve assembly efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the stator assembly of this application; Figure 2 for Figure 1 Sectional view at point AA; Figure 3 for Figure 2 A magnified view of a section at point M; Figure 4 This is an exploded structural diagram of an embodiment of the stator assembly of this application; Figure 5 This is a schematic diagram of the constraint component in an embodiment of this application; Figure 6 for Figure 5 Bottom view of the embodiment; Figure 7 This is a schematic diagram of the insulating skeleton in an embodiment of this application.

[0024] Explanation of icon numbers: 100. Stator assembly; 1. Stator core; 11. Stator teeth; 101. Stator slot; 2. Winding; 21. Coil; 3. Constraint component; 31. Support base; 32. Constraint; 33. Fastener; 331. Chamfer; 4. Insulating frame; 41. Annular bracket; 411. Cable routing groove; 42. Slot insulation part; 43. Winding part; 44. First wire blocking part; 45. Second wire blocking part; 451. Protrusion.

[0025] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0029] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0030] When the compressor is running, the alternating current will generate an electromagnetic force through the coil. The direction and magnitude of the electromagnetic force will change periodically. However, the direction of the electromagnetic force generated by the coil at each stator tooth is different, which will cause the coil at different positions to vibrate irregularly, and may even excite the entire stator assembly to vibrate, generating a lot of noise.

[0031] Therefore, this invention proposes a stator assembly designed to suppress vibration and reduce operating noise during motor operation. The structure of the stator assembly will be described below by way of embodiments.

[0032] In embodiments of the present invention, such as Figures 1 to 4As shown, the stator assembly 100 includes a stator core 1, a coil winding 2, and a constraint component 3. The stator core 1 has multiple stator teeth 11. The coil winding 2 includes multiple coils 21 respectively wound on the multiple stator teeth 11. The constraint component 3 includes a support base 31 and multiple constraint members 32 disposed on the support base 31. The multiple constraint members 32 are correspondingly disposed between two adjacent coils 21 and respectively press against the adjacent coils 21.

[0033] Understandably, the stator core 1 has a ring-shaped structure, including an annular yoke. Multiple stator teeth 11 can be disposed on the inner or outer circumference of the annular yoke, suitable for both internal and external rotor motors. Specifically, each stator tooth 11 is wound with a coil 21, which together form a coil winding 2. By passing alternating current into the coil winding 2, electromagnetic force can be generated on the inner or outer side of the annular yoke. When applied to a motor, this can drive the internal or external rotor to achieve power output. Optionally, the number of stator teeth 11 can be 6, 8, 10, 12, or other numbers, and correspondingly, the number of coils 21 can be 6, 8, 10, 12, or other numbers.

[0034] Because the direction and magnitude of electromagnetic force change periodically, especially since the electromagnetic forces generated by the coils 21 of two adjacent stator teeth 11 are equal in magnitude but opposite in direction, the coils 21 are more prone to vibration, which can trigger resonance in the entire stator assembly 100 and ultimately cause significant noise. Based on this, this embodiment sets up a constraint component 3, which includes a support base 31 and multiple constraint members 32 disposed on the support base 31. The multiple constraint members 32 are respectively disposed between two adjacent coils 21. The opposite side walls of each constraint member 32 can press and limit the two coils 21 adjacent to it, making the fit between the coils 21 and the stator teeth 11 more stable. On the one hand, it can effectively suppress the tangential vibration generated by the tangential electromagnetic force on the coils 21 and the stator teeth 11. On the other hand, it can generate a certain static friction force when the coils 21 are subjected to radial electromagnetic force, thereby reducing the radial vibration of the coils 21 and ultimately achieving the effect of vibration reduction and noise reduction.

[0035] It should be noted that the support base 31 in this embodiment serves to support the installation of multiple constraint members 32. The multiple constraint members 32 are all set on the support base 31 to form an integral structure. In practical applications, the support base 31 can be directly assembled with the stator core 1 or the insulating frame 4, and the multiple constraint members 32 can be inserted into the gaps of the corresponding adjacent coils 21 at one time. Compared with the multiple installation method of independently installing the constraint members 32 at the gaps of each coil 21, this embodiment can simplify the assembly steps and improve the assembly efficiency. At the same time, the overall connection structure of the multiple constraint members 32 and the support base 31 can improve the structural strength and enhance the reliability of the stator assembly 100.

[0036] Understandably, the number of constraint members 32 can be determined according to the actual situation. For example, there can be three, four, or more. That is, constraint members 32 can be provided between all two adjacent coils 21, or constraint members 32 can be provided between a portion of the adjacent coils 21. Compared with the method of not providing constraint members 32 between all adjacent coils 21, this embodiment can constrain the coils 21, thereby achieving the effect of vibration reduction and noise reduction. Of course, in practical applications, in order to achieve a better noise reduction effect, it is preferable to provide constraint members 32 between all two adjacent coils 21.

[0037] In practical applications, the shape and structure of the constraint member 32 can be determined according to the actual situation. For example, it can be a plate-like structure, strip-like structure, block-like structure, cylindrical structure, or other irregular structure. The constraint member 32 is set between two adjacent coils 21. The constraint member 32 must not only provide pressure and limit the coils 21, but also prevent damage to the enamel coating of the coils 21. Therefore, the constraint member 32 can be made of materials with good insulation properties and certain deformation and support capabilities, such as plastics, elastic materials, rubber, etc.

[0038] In practical applications, the support base 31 can be directly assembled with the stator core 1, or it can be assembled with the insulating frame 4 in the stator assembly 100. The shape and structure of the support base 31 can be determined according to the actual situation, such as a ring structure, a rectangular structure, a triangular structure, or other shapes. The support base 31 serves as a fixed support and also has insulating properties, so it can be made of plastic with a certain strength.

[0039] Optionally, the constraint member 32 and the support base 31 can be integrally formed, for example, by injection molding or 3D printing. Optionally, the constraint member 32 and the support base 31 can be formed separately and then assembled and fixed together.

[0040] In summary, in the stator assembly 100 of the present invention, the winding 2 includes multiple coils 21 respectively wound on multiple stator teeth 11. By setting a constraint component 3, which includes a support base 31 and multiple constraint members 32, the multiple constraint members 32 are respectively disposed between two adjacent coils 21. The two adjacent coils 21 are pressed and limited by the opposite side walls of the constraint members 32, which can enhance the stability of the coil 21 structure. In this way, the tangential vibration of the coil 21 and the stator teeth 11 can be effectively suppressed, and static friction can be generated when the coil 21 is subjected to radial electromagnetic force, thereby reducing the radial vibration of the coil 21. Thus, the vibration reduction and noise reduction of the whole machine can be achieved.

[0041] In addition, in this embodiment, multiple constraint members 32 are installed on the support base 31, and multiple constraint members 32 can be installed at the gaps of the corresponding adjacent coils 21 at one time, which can realize integral assembly, simplify the assembly steps, and improve assembly efficiency.

[0042] Please see Figure 1 , Figure 2 as well as Figure 4 In one embodiment of this application, the support base 31 is disposed at one axial end of the stator core 1, and the constraint member 32 extends from one axial end of the stator core 1 toward the other axial end.

[0043] Understandably, the support base 31 is located at one axial end of the stator core 1, and the constraint member 32 is located at one end of the support base 31, extending from the support base 31 in a direction away from it, thus forming a roughly vertical connection structure and improving the structural strength of the constraint member 3. In actual installation, multiple constraint members 32 can be directly inserted into the gaps between corresponding adjacent coils 21 along the axial direction of the stator core 1. At this time, the opposite side walls of the constraint member 32 abut against the two adjacent coils 21 respectively. The constraint member 32 extends from one axial end of the stator core 1 towards the other axial end, increasing the mating area between the constraint member 32 and the adjacent coils 21, achieving better abutment and limiting effect, and further enhancing the vibration reduction and noise reduction effect. Furthermore, the support base 31 is located at one axial end of the stator core 1, which does not occupy the radial space of the stator assembly 100, facilitating the miniaturization of the motor design.

[0044] Please see Figure 1 , Figure 2 as well as Figure 4 In one embodiment of this application, the support base 31 is configured as a ring structure coaxial with the stator core 1; a plurality of constraint members 32 are arranged at intervals along the circumference of the support base 31.

[0045] This design makes the layout of the constraint component 3 more regular. Multiple constraint components 32 are arranged at intervals along the circumference of the support base 31, which can achieve uniform limiting constraint on each coil 21 distributed in the circumference, making the force on each coil 21 in the circumference more balanced and improving the overall structural reliability.

[0046] It should be noted that the constraint member 32 can extend from one axial end of the stator core 1 to the other axial end, or the constraint member 32 can extend from one axial end of the stator core 1 to a certain position in the middle.

[0047] In practical applications, the stator assembly 100 may have only one set of constraint components 3, or it may have two sets of constraint components 3. When there is only one set of constraint components 3, one support 31 of the constraint component 3 may be set at one axial end of the stator core 1, and multiple constraint members 32 may extend from one axial end of the stator core 1 to the other axial end. When the stator assembly 100 includes two sets of constraint components 3, the two sets of constraint components 3 are respectively set at opposite ends of the stator core 1, and the two support 31 may be respectively set at the two axial ends of the stator core 1. The multiple constraint members 32 installed on the two support 31 may extend towards each other from one axial end of the stator core 1 toward the other axial end.

[0048] In one embodiment of this application, the radial dimension of the constraint member 32 gradually decreases from the support base 31 toward the direction away from the support base 31. This design can be understood as having a guide slope on the outer surface of the constraint member 32 or gradually decreasing the wall thickness of the constraint member 32. In this way, the structural shape of the constraint member 32 can be a regular shape or an irregular shape. This design reduces the difficulty of inserting the constraint member 32 into the gap between two adjacent coils 21, improving assembly efficiency.

[0049] In one embodiment of this application, the constraint member 32 is a plate-shaped structure, and an arc-shaped chamfer 331 is provided at the corner of the end of the constraint member 32 away from the support base 31. With this design, the plate-shaped constraint member 32 can abut and limit the two adjacent coils 21 respectively on its opposite sides, effectively increasing the abutment area and improving the pressure limiting effect; at the same time, the arc-shaped chamfer 331 at the corner of the end of the constraint member 32 away from the support base 31 can, on the one hand, play a guiding role in the insertion process, and on the other hand, prevent the corner from being too sharp and damaging the insulation of the coil 21.

[0050] Please see Figures 2 to 4 as well as Figure 7 In one embodiment of this application, a stator slot 101 is formed between two adjacent stator teeth 11. The stator assembly 100 also includes an insulating frame 4. The insulating frame 4 includes an annular bracket 41 and a plurality of slot insulating parts 42 disposed on the annular bracket 41. The annular bracket 41 is disposed at the axial end of the stator core 1. The plurality of slot insulating parts 42 are inserted into the plurality of stator slots 101 one by one. The plurality of coils 21 are respectively wound around the plurality of slot insulating parts 42. The support base 31 is detachably fixed to the insulating frame 4.

[0051] In this embodiment, the insulating frame 4 serves to install and fix the stator core 1. The insulating frame 4 includes an annular bracket 41 and multiple slot insulating parts 42. The annular bracket 41 connects the multiple slot insulating parts 42, which are correspondingly inserted into multiple stator slots 101, thus isolating the winding coil 21 from the stator teeth 11 and ensuring the insulation performance between the stator core 1 and the winding 2. It is understood that if two adjacent coils 21 pass through the same slot insulating part 42, the constraint member 32 is also inserted into the same slot insulating part 42, pressing and limiting the two coils 21. Based on this, by detachably fixing the support base 31 to the insulating frame 4, reliable installation of the multiple constraint members 32 can be achieved, and the ease of disassembly and assembly of the constraint members 32 can be improved, increasing assembly efficiency. In addition, the support base 31 is directly assembled using the insulating frame 4, without the need to set up a special assembly structure on the stator core 1 or add any other assembly structures. This design simplifies the overall structure of the stator assembly 100 and improves the structural compactness.

[0052] During installation, the multiple slot insulation parts 42 of the insulating frame 4 can be inserted into the multiple stator slots 101 to cover the wall of the stator teeth 11. At this time, the annular bracket 41 abuts against the end of the annular yoke of the stator core 1. Then, the coil is wound on the side of the slot insulation part 42 away from the slot wall of the stator slot 101 to form the corresponding coil 21. After that, the support base 31 drives the multiple constraint members 32 to be inserted into the space between two adjacent coils 21 along the axial direction of the stator core 1 and tightly fitted with the two coils 21. Finally, the support base 31 is fixed to the insulating frame 4 to realize the fixing function of the constraint member 3, the insulating frame 4, the stator core 1 and the winding 2.

[0053] In practical applications, the groove insulation part 42 can have a regular or irregular shape. Optionally, the groove insulation part 42 can be a cylindrical structure, a groove structure, a tubular structure, etc. Optionally, the groove insulation part 42 can be made of materials with good insulation properties, such as plastics, rubber, coated cloth or tubing, insulating impregnated fiber products, electrical films, composite products, and adhesive tapes. The annular bracket 41 serves as a fixed support and also has insulation properties, so it can be made of plastic with a certain strength. In practical applications, the annular bracket 41 and the groove insulation part 42 can be integrally molded structures, such as integral molding, 3D printing, or other molding methods.

[0054] Understandably, the detachable fixing method between the support base 31 and the insulating frame 4 can be determined according to the actual situation, such as snap-fit ​​fixing, screw fixing, or other fixing methods. In this embodiment, considering assembly efficiency, the support base 31 and the insulating frame 4 are fixed by snap-fit. In this way, during installation, it is only necessary to insert multiple constraint members 32 along the axial direction of the stator core 1 to achieve the snap-fit ​​connection between the support base 31 and the insulating frame 4. Compared with the screw fixing method, no additional fixing operation steps are required, making assembly convenient and the connection firm.

[0055] Please see Figures 2 to 4 as well as Figure 7 In one embodiment of this application, a winding portion 43 is provided between two adjacent slot insulation portions 42. In the radial direction of the annular bracket 41, a first wire-blocking portion 44 and a second wire-blocking portion 45 are respectively provided at both ends of the winding portion 43. The first wire-blocking portion 44 is connected to the slot insulation portion 42, and the second wire-blocking portion 45 is connected to the annular bracket 41. The support base 31 is arranged opposite to the winding portion 43, and the support base 31 is engaged with at least one of the first wire-blocking portion 44 and the second wire-blocking portion 45.

[0056] Understandably, the stator core 1 has a central hole in the middle for the rotor to be accommodated and rotated. Multiple stator slots 101 are arranged in a ring at intervals on the stator core 1. Correspondingly, multiple slot insulation parts 42 are arranged in a ring at intervals on the ring bracket 41 and correspond to the multiple stator slots 101. The winding part 43 covers the axial end face of the corresponding stator tooth 11. The winding coil 2 passes through the inner cavity of two adjacent slot insulation parts 42 and is wound onto the winding part 43 to ensure the insulation performance between the side wall and end face of the stator tooth 11 and the coil.

[0057] In this embodiment, by providing a first wire-blocking part 44 and a second wire-blocking part 45 at both ends of the winding part 43, the first wire-blocking part 44 is connected to the slot insulation part 42, which can restrict the movement of the coil 21 toward the center hole of the stator assembly 100. The second wire-blocking part 45 is connected to the annular bracket 41, which can restrict the movement of the coil 21 toward the radially outward side of the stator core 1. The support base 31 is arranged opposite to the winding part 43, which can restrict the movement of the coil 21 toward the axially outward side of the stator core 1. The constraint member 32 is inserted between two adjacent coils 21, which can restrict the movement of the coil 21 within the slot insulation part 42. Thus, the position of the coil 21 is effectively restricted, and the vibration of the coil 21 during motor operation can be suppressed, thereby reducing noise. At the same time, it also avoids contact between mechanical parts and motor windings 2 during motor operation, thus protecting motor windings 2.

[0058] Please see Figure 3To further enhance the limiting effect on the coil 21, in one embodiment, the radial ends of the support base 31 are connected to the first wire-blocking portion 44 and the second wire-blocking portion 45, respectively. It is understood that the circumferential surface of the first wire-blocking portion 44, the end face of the winding portion 43, and the circumferential surface of the second wire-blocking portion 45 together form an axially open groove structure. By connecting the radial ends of the support base 31 to the first wire-blocking portion 44 and the second wire-blocking portion 45, the support base 31 seals the axial opening of the groove structure, thereby further preventing the coil 21 from axially dislodging and improving the structural stability of the coil 21.

[0059] In one embodiment of this application, the support base 31 is engaged with at least one of the first wire-blocking portion 44 and the second wire-blocking portion 45. It is understood that the support base 31 may be engaged with only the first wire-blocking portion 44, or only the second wire-blocking portion 45, or both the first wire-blocking portion 44 and the second wire-blocking portion 45.

[0060] As an example, this embodiment adopts a fastening connection between the support base 31 and the second wire-blocking part 45. At this time, the inner periphery of the support base 31 can abut against the first wire-blocking part 44. The inner diameter of the support base 31 is not less than the diameter of the circumference of the inner sidewall of the first wire-blocking part 44. That is, the inner periphery of the support base 31 does not protrude radially inward from the first wire-blocking part 44. This design can ensure the limiting effect on the coil 21 while avoiding interference between the support base 31 and the inner rotor.

[0061] Please see Figure 3 , Figure 5 as well as Figure 7 In one embodiment of this application, the annular bracket 41 is provided with a cable routing groove 411 around the second cable blocking part 45, and a protrusion 451 is provided on the side of the second cable blocking part 45 facing the cable routing groove 411. The outer periphery of the support base 31 is provided with a plurality of fasteners 33, and the fasteners 33 are engaged with the protrusion 451.

[0062] Understandably, after the winding 2 coil is wound, it needs to be led out from the stator assembly 100 and connected externally. Based on this, this embodiment provides a wire routing groove 411 on the annular bracket 41 to guide the lead wire of the winding 2 coil. The second wire blocking part 45 can restrict the lead wire.

[0063] The second wire-blocking section 45 has a protrusion 451 on the side facing the cable tray 411. The outer periphery of the support base 31 has multiple locking elements 33, which can engage with the corresponding protrusion 451 to achieve the assembly function of the support base 31 and the insulating frame 4. Simultaneously, the protrusion 451 and the locking elements 33 of the support base 31 also provide better restraint for the wires within the cable tray 411, preventing the wires from detaching from the cable tray 411.

[0064] In this embodiment, by providing a protrusion 451 on the outer side of the second wire blocking part 45 and a fastener 33 that cooperates with the protrusion 451 on the outer periphery of the support base 31, the assembly function of the support base 31 and the insulating frame 4 can be realized, and the wire body in the wiring groove 411 can also be limited.

[0065] Optionally, the protrusion 451 can be a triangular structure to protect the wiring of winding 2. Optionally, the fastener 33 can be a hook structure.

[0066] Please see Figures 4 to 6 In one embodiment of this application, a plurality of snap fasteners 33 and a plurality of restraints 32 are arranged alternately around the periphery of the support base 31.

[0067] As can be seen from the foregoing embodiments, the second wire-blocking portion 45 is located at one end of the winding portion 43. The protrusion 451 on the second wire-blocking portion 45 and the slot insulation portion 42 are spaced apart and staggered in the circumferential direction of the insulating frame 4. Correspondingly, the fastener 33 and the slot insulation portion 42 are also spaced apart and staggered in the circumferential direction. Multiple constraint members 32 are inserted between adjacent coils 21 in the inner cavity of the corresponding slot insulation portion 42. By arranging multiple fasteners 33 and multiple constraint members 32 alternately around the periphery of the support base 31, uniform connection strength can be ensured at all points, and the constraint structure and the fixed structure can be kept from interfering with each other, resulting in a more regular overall assembly and better operational stability.

[0068] As an example, each second wire stop 45 can be provided with a protrusion 451, and correspondingly, the support base 31 is provided with a buckle 33 for each protrusion 451, and a constraint 32 is provided between each two adjacent coils 21. With this design, the protrusion 451 of each second wire stop 45 is engaged with the buckle 33 of the support base 31 one by one, the circumferential force is more uniform, and the connection is more stable; at the same time, the constraint 32 between adjacent coils 21 can effectively suppress vibration and achieve better noise reduction effect.

[0069] Please see Figures 2 to 4 In one embodiment of this application, the constraint member 32 extends radially outward from the tooth tip of the stator tooth 11 to the inner peripheral wall of the annular bracket 41.

[0070] This design increases the radial dimensions of the opposite side walls of the constraint member 32, thereby increasing the contact area between the constraint member 32 and the adjacent coil 21, further enhancing the limiting effect on the coil 21, and achieving better vibration reduction and noise reduction.

[0071] In addition, the inner peripheral wall of the ring bracket 41 can also support the constraint member 32, improving the overall structural strength of the constraint member 3 and making it less prone to deformation.

[0072] To improve the structural reliability of the stator assembly 100, in some embodiments, the stator assembly 100 may include two insulating frames 4, which are respectively disposed at opposite ends of the stator core 1. Multiple slot insulating portions 42 of each insulating frame 4 are inserted from opposite ends of the axial direction of the stator slot 101 until they are connected. The coil passes through the inner cavity of the two opposite slot insulating portions 42 at the same time, so that a coil 21 simultaneously winds the two opposite slot insulating portions 42. This can increase the supporting effect of the two annular supports 41 on the axial ends of the stator core 1, and further improve the structural reliability of the stator assembly 100.

[0073] In practical applications, one of the insulating frames 4 can be connected to the constraint component 3, or both insulating frames 4 can be connected to the constraint component 3. Regardless of the method, the assembly structure of the constraint component 3 and the insulating frame 4 can refer to the aforementioned embodiments in this specification, and will not be elaborated here.

[0074] The present invention also proposes an electric motor, which includes a rotor and a stator assembly 100. The specific structure of the stator assembly 100 is as described in the above embodiments. Since this electric motor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The rotor drives the stator assembly 100. Optionally, the rotor can be an inner rotor disposed inside the stator assembly 100, or an outer rotor disposed outside the stator assembly 100.

[0075] The present invention also proposes a compressor, which includes a compression component and a motor. The specific structure of the motor is as described in the above embodiments. Since the compressor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0076] Alternatively, the compressor can be an air conditioning compressor, a refrigerator compressor, or other types of compressors.

[0077] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A stator assembly, characterized in that, include: The stator core has multiple stator teeth; The winding includes multiple coils respectively wound on multiple stator teeth; as well as The constraint component includes a support base and a plurality of constraint members disposed on the support base. The plurality of constraint members are correspondingly disposed between two adjacent coils and respectively press against the adjacent coils.

2. The stator assembly as claimed in claim 1, characterized in that, The support base is located at one axial end of the stator core, and the constraint member extends from one axial end of the stator core toward the other axial end.

3. The stator assembly as described in claim 2, characterized in that, The support base is configured as a ring structure coaxial with the stator core; Multiple of the constraint members are arranged at circumferential intervals along the support base.

4. The stator assembly as claimed in claim 3, characterized in that, A stator slot is formed between two adjacent stator teeth. The stator assembly also includes an insulating frame. The insulating frame includes an annular bracket and a plurality of slot insulating parts disposed on the annular bracket. The annular bracket is disposed at the axial end of the stator core. The plurality of slot insulating parts are inserted into the plurality of stator slots one by one. The plurality of coils are respectively wound around the plurality of slot insulating parts. The support base and the insulating frame are detachably fixed.

5. The stator assembly as claimed in claim 4, characterized in that, The support base is fastened and fixed to the insulating frame.

6. The stator assembly as claimed in claim 5, characterized in that, A winding portion is provided between two adjacent slot insulation portions. In the radial direction of the annular bracket, a first wire-blocking portion and a second wire-blocking portion are respectively provided at both ends of the winding portion. The first wire-blocking portion is connected to the slot insulation portion, and the second wire-blocking portion is connected to the annular bracket. The support base is positioned opposite the winding portion, and the support base is engaged with at least one of the first wire-blocking portion and the second wire-blocking portion.

7. The stator assembly as claimed in claim 6, characterized in that, The annular bracket has a cable routing groove around the second cable blocking part, and the second cable blocking part has a protrusion on the side facing the cable routing groove. The outer periphery of the support base has multiple fasteners, which are engaged with the protrusion.

8. The stator assembly as claimed in claim 7, characterized in that, The multiple fasteners and multiple constraint members are arranged alternately around the periphery of the support base.

9. The stator assembly as claimed in any one of claims 6 to 8, characterized in that, The radial ends of the support base are respectively connected to the first baffle portion and the second baffle portion.

10. The stator assembly as claimed in any one of claims 4 to 8, characterized in that, The constraint member extends radially outward from the tip of the stator tooth along the stator core to the inner peripheral wall of the annular bracket.

11. The stator assembly as claimed in any one of claims 4 to 8, characterized in that, The stator assembly includes two insulating frames, which are respectively disposed at opposite ends of the stator core, and the support base cooperates with either of the insulating frames.

12. The stator assembly as claimed in any one of claims 2 to 8, characterized in that, The radial dimension of the constraint gradually decreases from the support base toward the direction away from the support base; And / or, the constraint member is a plate-like structure, and the corner of the constraint member opposite to the support base is provided with an arc-shaped chamfer.

13. The stator assembly as claimed in any one of claims 1 to 8, characterized in that, The stator assembly includes two sets of constraint components, which are respectively disposed at opposite ends of the stator core.

14. An electric motor, characterized in that, It includes a rotor and a stator assembly as described in any one of claims 1 to 13, wherein the rotor is driven to engage with the stator assembly.

15. A compressor, characterized in that, It includes a compression component and a motor as described in claim 14.

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