Compressor motor stator assembly without wire binding

Abstract

The utility model relates to the technical field of compressor motor, specifically speaking is the compressor motor stator subassembly of no need to bind wire. It includes stator yoke, tooth part, winding and three -phase line on the winding of tooth part, and the upper end surface of stator yoke is connected with the upper framework, and the lower end surface of stator yoke is connected with the lower framework, and the upper framework outer cover is equipped with upper casing, and the lower framework outer cover is equipped with lower casing, and the inner wall surface of lower casing is with the gap of 1~1.5mm between winding upper end surface, be provided with a plurality of line outlet and plastic shell on lower casing, the plastic shell is L-shaped arrangement, the both ends of plastic shell L-shaped are provided with the wire hole for three -phase line to go in, and three -phase line is led out from line outlet under the state of not being bound wire, and is installed to the inside of plastic shell. Through the above technical scheme, the utility model solves the problem of high cost and large workload of operating personnel in the stator subassembly assembly process.

Description

Technical Field

[0001] This utility model relates to the field of compressor motor technology, specifically to a compressor motor stator assembly that does not require wiring. Background Technology

[0002] In the field of compressor motors, the stator assembly, as one of the core structures, directly affects the motor's operating efficiency, reliability, and production cost through its assembly process and stability.

[0003] The stator assembly of a conventional compressor motor typically consists of a stator yoke, winding teeth, upper and lower frames, and a housing. After the enameled wire winding is wound onto the teeth, it needs to be connected to the external circuit via three-phase leads to ensure current conduction and normal motor commutation. To prevent the three-phase leads from colliding with the housing during motor operation, which could lead to insulation damage, short circuits, or other problems, the three-phase leads must be fixed using a binding process. Generally, insulated wires, cable ties, or tape are used for binding, and the three-phase leads and parallel wires are bound one by one to the pre-set fixed structure on the frame or housing by manual labor or semi-automatic equipment.

[0004] The binding operation requires precise control of the binding force. If it is too tight, it will damage the insulation layer of the enameled wire, and if it is too loose, it will not be able to fix it. Furthermore, the binding position and method need to be adjusted according to the number of leads and the layout path, which greatly increases the workload of the operators. In addition, in order to cooperate with the binding process, the stator frame and cover need to reserve binding slots, fixing components and other structures, which not only increases the complexity of parts and mold development costs, but also occupies a lot of internal space of the motor, resulting in a larger overall size of the stator assembly. Utility Model Content

[0005] To address the problems in related technologies, this invention provides a compressor motor stator assembly that eliminates the need for wire binding. This device solves the problems of high cost and heavy workload for operators.

[0006] To solve the above problems, the following technical solutions are provided: The stator assembly of the compressor motor of this utility model, which does not require wire binding, includes a stator yoke, teeth, windings wound on the teeth, and three-phase wires. An upper frame is connected to the upper end face of the stator yoke, and a lower frame is connected to the lower end face of the stator yoke. An upper cover is fitted over the upper frame, and a lower cover is fitted over the lower frame. A gap of 1-1.5mm is provided between the inner wall of the lower cover and the upper end face of the windings. The lower cover is provided with multiple wire outlets and a plastic shell. The plastic shell is arranged in an L-shape, and wire holes for the three-phase wires to pass through are respectively provided at both ends of the L-shape of the plastic shell. The three-phase wires are led out from the wire outlets and installed into the plastic shell without being bound.

[0007] By adopting the above technical solution, only a 1-1.5mm gap is reserved between the inner wall of the lower casing and the upper end face of the winding, thereby axially limiting the three-phase wire portion within the lower casing. The gap size precisely matches the diameter of the three-phase wire and the vibration amplitude, preventing axial movement of the three-phase wire. Furthermore, no additional binding operation is required, saving on binding material costs and manual binding procedures, which helps reduce the workload of operators and lower costs, thus solving the problems of high cost and heavy workload for operators. The plastic casing also helps optimize the three-phase wire layout path, improving safety and assembly efficiency, eliminating the need for manual path arrangement and binding. This avoids problems such as wire crossing and tangling.

[0008] Furthermore, four cable outlets are distributed on the side wall of the lower cover opposite to the plastic shell. An annular plate is provided on the inner wall of the lower cover near the radially inner side corresponding to the cable outlets. A pressure wall extending radially is fixedly provided on the annular plate, and the pressure wall is arranged in a figure-7 shape.

[0009] The above solution uses a pressure wall to limit the radial displacement of the three-phase wires extending from the outlet, preventing the three-phase wires from moving radially during motor operation, and the limiting effect is relatively stable.

[0010] Furthermore, the lower cover is provided with a parallel junction box for installing three-phase parallel wires on the end face of a plurality of distributed outlets spaced apart. Both ends of the parallel junction box are arranged in an open shape.

[0011] The above solution uses a parallel connector box to install parallel connectors without any binding materials. The parallel connectors can be fixed simply by placing them directly into the open-top parallel connector box, which helps reduce labor and binding costs.

[0012] Furthermore, existing wire binding for fixing parallel wires is prone to loosening due to vibration and electromagnetic force, resulting in displacement of the parallel wires and collisions and friction with other components, which can lead to insulation damage and short circuits. The parallel wire box can physically isolate the parallel wires, limit their radial and circumferential displacement, and prevent direct contact with the lower cover, thus reducing the risk of failure.

[0013] Furthermore, the inner wall surface of the lower cover near the radially inner side is provided with a plurality of limiting blocks extending along its axial direction, and the limiting blocks are evenly distributed along the inner wall surface of the lower cover.

[0014] In the above scheme, the limiting block is used to insert into the gap between two adjacent stop parts of the lower frame. The limiting block and the stop part form a tight stop on the radial inner side of the stator assembly, thereby preventing the three-phase line from moving to the radial inner rotor end.

[0015] Furthermore, the plastic shell is integrally molded on the lower cover, and the parallel cable box is integrally molded on the lower cover.

[0016] By adopting the above technical solution, the plastic shell, the parallel junction box and the lower shell are integrally molded, which helps to avoid the risk of the plastic shell shifting and the parallel junction box falling off due to long-term vibration of the motor.

[0017] Furthermore, the outer peripheral surface of the upper frame is provided with a wiring groove, the outer wall surface of the upper frame away from the stator yoke is provided with a first protrusion, and the upper cover is provided with a first groove that matches the first protrusion; the outer wall surface of the lower frame away from the stator yoke is provided with a second protrusion, and the lower cover is provided with a second groove that matches the second protrusion.

[0018] In the above scheme, the winding cross-tooth wires are directly embedded in the winding groove 15 by setting the wiring groove, which can achieve orderly arrangement.

[0019] Furthermore, the three-phase windings of the stator assembly are connected in a star configuration.

[0020] In the above scheme, the stator assembly is wound using a cross-tooth winding method, with only six leads, reducing the number of lines and improving the non-binding effect.

[0021] The above solution has the following advantages: 1. The compressor motor stator assembly of this utility model, which eliminates the need for wire binding, has only a 1-1.5mm gap between the inner wall of the lower housing 6 and the upper end face of the winding. This gap provides axial restraint for the three-phase wires that do not extend out of the outlet inside the lower housing. The gap size precisely matches the diameter of the three-phase wires and the vibration amplitude, preventing axial movement of the three-phase wires. Furthermore, no additional binding operation is required, saving on the cost of binding materials and manual binding procedures. This reduces the workload of operators and lowers costs, thus solving the problems of high cost and heavy workload for operators. The plastic shell 7 optimizes the layout path of the three-phase wires, improving safety and assembly efficiency, eliminating the need for manual path arrangement and binding.

[0022] 2. The parallel connector box allows for the installation of parallel connectors without the need for any binding materials. Simply place the parallel connector into the open-top box to secure it, reducing labor and binding costs. Existing binding methods for parallel connectors are prone to loosening due to vibration and electromagnetic forces, leading to connector displacement, collisions, and friction with other components, which can cause insulation damage and short circuits. The parallel connector box provides a physical barrier to the parallel connector, limiting its radial and circumferential displacement and preventing direct contact with the lower housing, thus reducing the risk of malfunctions. Attached Figure Description

[0023] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 A schematic diagram of the stator assembly of a compressor motor that does not require wire binding. Figure 2 An exploded view of the stator assembly of a compressor motor that does not require wiring. Figure 3 This is a schematic diagram of the lower cover of the stator assembly of a compressor motor that does not require wiring. Figure 4 for Figure 2 Enlarged diagram of section A in the middle; Figure 5 for Figure 2 Enlarged diagram of section B in the middle; Figure 6 This is a structural schematic diagram of the stator assembly of a compressor motor that does not require wire binding, from another perspective. Figure 7 A cross-sectional view of the stator assembly of a compressor motor that does not require wiring. Explanation of reference numerals in the attached drawings: 1. Stator yoke; 2. Tooth section; 3. Upper frame; 4. Lower frame; 5. Upper cover; 6. Lower cover; 7. Plastic shell; 8. Wire hole; 9. Terminal post; 10. Outlet; 11. Annular plate; 12. Wire pressing wall; 13. Parallel junction box; 14. Limiting block; 15. Cable routing groove; 16. First protrusion; 17. First groove; 18. Second protrusion; 19. Second groove; 20. Three-phase wire; 21. Parallel wire. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In specific embodiment 1, such as Figures 1-7As shown, the stator assembly of the compressor motor of this utility model that does not require binding wires includes a stator yoke 1, teeth 2, windings wound on the teeth, and three-phase wires 20. An upper frame 3 is connected to the upper end face of the stator yoke 1, and a lower frame 4 is connected to the lower end face of the stator yoke 1. An upper cover 5 is fitted over the upper frame 3, and a lower cover 6 is fitted over the lower frame 4. A gap x of 1~1.5mm is provided between the inner wall surface of the lower cover 6 and the upper end face of the windings. The lower cover 6 has multiple wire outlets and a plastic shell 7. The plastic shell 7 is arranged in an L-shape, and each end of the L-shape of the plastic shell 7 has a wire-passing hole 8 for the three-phase wires 20 to pass through. A terminal post 9 is provided on the upper end face of the plastic shell 7. Figure 7 As shown, only a 1-1.5mm gap x is reserved between the inner wall of the lower housing 6 and the upper end face of the winding, thereby axially limiting the three-phase wires 20 inside the housing. The gap size precisely matches the diameter and vibration amplitude of the three-phase wires 20, preventing axial movement of the three-phase wires 20. Furthermore, no additional binding operation is required, saving on binding material costs and manual binding procedures, which helps reduce the workload of operators and lower costs, thus solving the problems of high cost and heavy workload for operators. The plastic shell 7 optimizes the path arrangement of the three-phase wires 20, improving safety and assembly efficiency, eliminating the need for manual path arrangement and binding.

[0026] Multiple cable outlets 10 are distributed on the side wall of the lower cover 6 opposite to the plastic cover 7, such as... Figure 3 Four outlets are provided for leading out the three-phase wires 20 and the parallel wires 21. An annular plate 11 is provided on the radially inner side wall of the lower casing 6 corresponding to the outlet 10. A radially extending pressure wall 12 is fixedly installed on the annular plate 11, arranged in a "7" shape. This pressure wall 12 restricts the radial displacement of the three-phase wires 20 leading out of the outlet 10, preventing radial movement of the three-phase wires 20 during motor operation, and providing a relatively stable limiting effect. The L-shaped plastic casing 7 has wire-passing holes 8 at both ends. Combined with multiple outlets, this allows the three-phase wires 20 to extend from the inside of the frame through the outlet via the optimal path, pass through the pressure wall 12, and finally insert into the wire-passing hole 8. Even without binding, the three-phase wires 20 can be routed in an orderly manner, ensuring safety and reliability.

[0027] The inner wall surface of the lower cover 6 near the radial inner side is provided with several axially extending limiting blocks 14. The limiting blocks 14 are evenly distributed along the inner wall surface of the lower cover 6. The limiting blocks 14 are used to insert into the gap between two adjacent stop parts of the lower frame 4. The limiting blocks 14 and the stop parts form a tight stop on the radial inner side of the stator assembly, thereby preventing the three-phase line 20 from moving towards the radial inner rotor end.

[0028] In this embodiment 1, the stator assembly is wound using a cross-tooth winding method. For example, in a 6-pole 9-slot motor, the A-phase winding is wound according to tooth 1→4→7, the B-phase winding is wound according to tooth 2→5→8, and the C-phase winding is wound according to tooth 3→6→9. Each phase retains two lead wires at the beginning and end, resulting in only six lead wires. If a star connection is used, three of these lead wires are paralleled as the parallel head wire 21, and the other three are used as the three-phase wires 20. This reduces the number of lines and helps improve the non-binding wire effect.

[0029] The upper frame 3 has a wiring groove 15 on its outer peripheral surface. A first protrusion 16 is provided on the outer wall of the upper frame 3 at the end away from the stator yoke 1. A first groove 17, matching the first protrusion 16, is provided on the upper cover 5. The two work together to achieve a reliable connection of the upper cover 5. Through the wiring groove 15, the cross-tooth wires of the winding are directly embedded in the wiring groove 15, allowing for an orderly arrangement. The lower frame 4 has a second protrusion 18 on its outer wall at the end away from the stator yoke 1. A second groove 19, matching the second protrusion 18, is provided on the lower cover 6. The two work together to achieve a reliable connection of the lower cover 6 and to confirm the circumferential position of the lower cover 6 during connection, facilitating the lead-out of the three-phase wires 20 from the outlet.

[0030] In a specific embodiment 2, such as Figure 3 As shown, the difference between this embodiment and embodiment 1 is that in this embodiment, a parallel cable box 13 is provided on the end face of the lower cover 6 at the end face separated from the cable outlet. Both ends of the parallel cable box 13 are open, which facilitates the installation of the parallel cable 21 from either side. No binding material is required. The parallel cable 21 can be fixed by simply putting it into the open parallel cable box 13, which helps to reduce the cost of labor and binding. Moreover, the existing binding of parallel cables is prone to loosening due to vibration and electromagnetic force, resulting in the parallel cable displacement and collision and friction with other components, which can lead to insulation damage and short circuit. The parallel cable box 13 can form a physical barrier for the parallel cable, restricting the radial and circumferential displacement of the parallel cable and avoiding direct contact with the lower cover 6, which helps to reduce the risk of failure.

[0031] In specific embodiment 3, the difference between this embodiment and embodiments 1 and 2 is that the plastic shell 7 is integrally molded on the lower cover 6, and the parallel connector box 13 is integrally molded on the lower cover 6. The plastic shell 7, the parallel connector box 13 and the lower cover are integrally molded, which helps to avoid the risk of the plastic shell 7 shifting and the parallel connector box 13 falling off due to long-term vibration of the motor.

[0032] During operation, the upper frame 3 is fixed to the upper end face of the stator yoke 1, and the lower frame 4 is fixed to the lower end face of the stator yoke 1, ensuring a stable connection between the upper frame 3, the lower frame 4, and the stator yoke 1. A cross-tooth winding method is used to wind the wires on the tooth section 2, so that only two wires are led out from each phase winding, for a total of six wires from the three phases. During the winding process, the cross-tooth branch wires of the upper winding are simultaneously embedded into the wire routing groove 15 on the outer circumference of the upper frame 3, initially completing the winding. Then, the upper cover 5 is installed, so that the first protrusion 16 engages with the first groove 17. The six wires led out from the winding are connected using a planetary connection method, with three wires connected in parallel as a parallel joint. Line 21, and the other three lines are fitted with insulating sleeves to serve as three-phase lines 20. The three-phase lines are arranged and fitted with upper and lower covers 6. Each three-phase line is passed through the corresponding outlet 10. The three-phase lines 20 inside the covers are fixed in place by the gap x between the inner wall of the lower cover 6 and the upper end face of the winding. Then, the three-phase lines 20 are passed through the wire pressure wall 12 and inserted into the wire hole 8 and connected to the terminal 9 to achieve three-phase line fixation without binding wires. The parallel wires are then processed. After the parallel wires of the winding are gathered and arranged, they are installed in the parallel wire box 13 to achieve parallel wire fixation without binding wires.

[0033] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all implementation methods here, and any obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A compressor motor stator assembly that does not require wire binding, comprising a stator yoke, teeth, windings wound on the teeth, and three-phase wires, wherein an upper frame is connected to the upper end face of the stator yoke, a lower frame is connected to the lower end face of the stator yoke, an upper cover is fitted over the upper frame, and a lower cover is fitted over the lower frame, characterized in that... A gap of 1~1.5mm is provided between the inner wall surface of the lower cover and the upper end surface of the winding; the lower cover is provided with multiple wire outlets and plastic shells, the plastic shells are arranged in an L shape, and the two ends of the L-shape of the plastic shells are respectively provided with wire holes for the three-phase wires to pass through. The three-phase wires are led out from the wire outlets and installed into the plastic shells without being tied.

2. The compressor motor stator assembly without binding wire as described in claim 1, characterized in that, Four cable outlets are distributed on the side wall of the lower cover opposite to the plastic shell. An annular plate is provided on the inner wall of the lower cover near the radial inner side corresponding to the cable outlet. A pressure wall extending radially is fixedly provided on the annular plate. The pressure wall is arranged in a figure-7 shape.

3. The wire-free compressor motor stator assembly as described in claim 1, characterized in that, The lower cover has a parallel junction box for installing three-phase parallel wires on the end face of a plurality of distributed outlets spaced apart. Both ends of the parallel junction box are arranged in an open shape.

4. The wire-free compressor motor stator assembly as described in claim 1, characterized in that, The inner wall surface of the lower cover near the radially inner side is provided with a plurality of limiting blocks extending along its axial direction, and the limiting blocks are evenly distributed along the inner wall surface of the lower cover.

5. The wire-free compressor motor stator assembly as described in claim 3, characterized in that, The plastic shell is integrally molded and disposed on the lower cover, and the parallel cable box is integrally molded and disposed on the lower cover.

6. The wire-free compressor motor stator assembly as described in claim 1, characterized in that, The outer peripheral surface of the upper frame is provided with a wiring groove, and the outer wall surface of the upper frame away from the stator yoke is provided with a first protrusion, and the upper cover is provided with a first groove that matches the first protrusion; the outer wall surface of the lower frame away from the stator yoke is provided with a second protrusion, and the lower cover is provided with a second groove that matches the second protrusion.

7. The wire-free compressor motor stator assembly as described in claim 1, characterized in that, The three-phase windings of the stator assembly are connected in a star configuration.

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