A motor structure

Abstract

This invention relates to the field of motor technology, specifically to a motor structure. It includes a housing and a stator. A controller is fixedly mounted on the top of the housing. A rotating shaft is disposed inside the housing. The stator is disposed inside the housing and includes a first iron core fixedly mounted inside the housing. The first iron core has multiple rectangular slots inside, each containing multiple flat wires. Two insulating papers are placed inside the rectangular slots, with the flat wires positioned between the two insulating papers. By embedding flat wires in the rectangular slots and placing insulating papers and partitions, a semi-closed structure is formed with narrow slots facing the rotating shaft, increasing the copper filling rate within the slots and thus improving the current carrying capacity within the same volume. The partitions between the flat wires reduce the high-frequency skin effect and the risk of interlayer short circuits. The rotor section uses a V-shaped groove with a 120° included angle, allowing the magnetic fields of the two magnets to be superimposed.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and more specifically, to a motor structure. Background Technology

[0002] An electric motor is an electromagnetic energy conversion device that converts electrical energy into mechanical energy. It generates rotational torque by relying on electromagnetic induction and the interaction of magnetic fields, which drives the load to rotate or move in a straight line. It utilizes the principle of electromagnetism and magnetic force: the stator generates a rotating magnetic field when energized, and the rotor permanent magnet forms a fixed magnetic field. The two magnetic fields attract and repel each other, continuously pulling the rotor to rotate, thus realizing the conversion of electrical energy into mechanical energy.

[0003] According to existing technology, traditional round wire motors are limited by the geometric characteristics of the circular cross section, resulting in a large number of gaps between the wires. The remaining space is occupied by air and insulation materials. The air in the slot is a poor conductor, and heat is easy to accumulate inside the coil and is difficult to dissipate, leading to higher winding temperature and accelerated aging of insulation. Since the ends of the round wire winding retain a flared arc for easy wire threading, the end length is relatively long. This part of the copper wire does not participate in generating torque but continues to generate heat, which will increase copper loss and increase the difficulty of heat dissipation. Summary of the Invention

[0004] This invention provides a motor structure that, by embedding flat wires in rectangular slots and setting insulating paper and partitions, forms a semi-closed structure with narrow slots facing the shaft. This improves the copper filling rate in the slots, thereby increasing the current carrying capacity of the same volume. The partitions between the flat wires reduce the risk of high-frequency skin effect and interlayer short circuit. The rotor part adopts a V-shaped groove with an included angle of 120°, which allows the magnetic fields of the two magnets to be superimposed. The triangular grooves on both sides of the groove and the strip groove between the two grooves act as magnetic barriers, thereby solving the problems mentioned in the background art, namely: because the ends of the round wire windings retain a flared arc for easy wire threading, and the end length is relatively long, this part of the copper wire does not participate in generating torque but continues to generate heat, which will increase copper loss and heat dissipation difficulty.

[0005] To achieve the above objectives, the motor structure includes a housing and a stator. A controller is fixedly mounted on the top of the housing, and a rotating shaft is disposed inside the housing. The stator is disposed inside the housing and includes a first iron core fixedly mounted inside the housing. The first iron core has multiple rectangular slots inside, and multiple flat wires are embedded inside the rectangular slots. Two insulating papers are disposed inside the rectangular slots, and the multiple flat wires are disposed between the two insulating papers. A partition is disposed between two adjacent flat wires. A narrow slot is formed at one end of the rectangular slot facing the rotating shaft, and an elastic magnetic gap compensation structure plate is embedded at the edge of the narrow slot. The elastic magnetic gap compensation structure plate is an elastic steel sheet used to deform slightly with centrifugal force when the rotor rotates, dynamically compensating for uneven magnetic gap.

[0006] The rotating shaft is provided with a rotor on its outside. The rotor includes a second iron core that is fixedly connected to the outside of the rotating shaft. The second iron core has multiple grooves inside, and two grooves with an included angle of 120° are grouped together. The tips of the two grooves face the center point of the second iron core, and the openings of the two grooves face the outer circumference of the first iron core. Magnets are provided inside the grooves. Triangular grooves are provided inside the second iron core near both sides of the grooves, and a strip groove is provided between the two grooves.

[0007] Secondly, the outer shell is provided with a cooling device, which includes two feed pipes fixedly connected to the top of the shell. An oil inlet chamber is opened at the top of the shell, and an oil outlet chamber is opened at the bottom of the shell. Two partitions are fixedly connected between the oil inlet chamber and the oil outlet chamber. An oil outlet pipe is fixedly connected to the bottom of the shell. Multiple capillary holes are opened inside the first iron core near the rectangular groove. The capillary holes are used for cooling oil to pass through and flow into the rectangular groove to wet the outer surface of the flat wire.

[0008] Furthermore, a heat dissipation device is provided at the top of the two feed pipes. The heat dissipation device includes a diversion pipe fixedly connected to the top of the two feed pipes. A storage box is fixedly connected to the outside of the diversion pipe. Multiple heat sinks are fixedly connected inside the storage box. The heat sinks are used to discharge the heat absorbed by the cooling oil from the inside of the housing to the external environment. The heat sinks penetrate through the top of the storage box and extend outward. A fan assembly is provided on one side of the storage box. Multiple mounting bolts are threadedly connected to the fan assembly and the inside of the storage box. The fan assembly is located on one side of the multiple heat sinks.

[0009] Based on the above, a filter assembly is provided on one side of the oil outlet pipe. The filter assembly includes a filter box fixedly connected to the outside of the oil outlet pipe. A filter cartridge is embedded inside the filter box. The filter cartridge is a magnetic filter cartridge used to adsorb ferromagnetic impurities in the cooling oil. A receiving cavity is opened inside the filter box. The opening of the filter cartridge faces the oil outlet pipe. The filter cartridge is embedded inside the filter box through the receiving cavity. A sealing plate is fixedly connected inside the filter box.

[0010] Meanwhile, a circulating oil pump is provided outside the diversion pipe and the oil outlet pipe. A support assembly is provided at the end of the diversion pipe and the oil outlet pipe that are close to each other. The support assembly includes a sleeve rod located directly above the oil outlet pipe. Two sliding rods are slidably connected inside the sleeve rod. A receiving block and a top ring are fixedly connected at the ends of the two sliding rods that are far from each other. The receiving block is sleeved outside the oil outlet pipe. The top ring is located outside the diversion pipe. Two elastic bands are embedded inside the top ring. The two elastic bands are sleeved outside the diversion pipe. Two slots are opened inside the top ring near the elastic bands. The elastic bands are fitted with the top ring through the slots.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] In this motor structure, by embedding flat wires within rectangular slots and installing insulating paper and partitions, a semi-closed structure is formed with narrow slots. This improves the copper filling rate within the slots, increasing the current carrying capacity within the same volume. The partitions reduce the risk of interlayer short circuits. The rotor section uses V-shaped grooves with a 120° included angle, allowing the magnetic fields of the two magnets to overlap. The triangular slots and the strip slots between the two grooves act as magnetic barriers, guiding the magnetic lines of force along the main magnetic path. Simultaneously, elastic magnetic gap compensation structures are embedded at the edges of the narrow slots, using centrifugal force to dynamically compensate for magnetic gap unevenness through slight deformation, reducing tooth harmonics, actively reducing noise, and optimizing the motor's performance. The magnetic circuit, with the oil inlet and outlet chambers forming an oil path through the partition, guides the cooling oil to directly wet the surface of the flat wire through capillary pores, enabling direct heat absorption within the tank. The oil flows through the outlet pipe to the heat sink, where the fan unit discharges the heat to the external environment, lowering the oil temperature before it re-enters the motor for circulation. The distributor pipe and the receiving box ensure even distribution of the cooling oil, while the circulating oil pump provides power. The sleeve, slide bar, receiving block, and top ring secure the pipeline and accommodate thermal expansion. A magnetic filter cartridge adsorbs ferromagnetic impurities, preventing them from clogging the capillary pores or damaging the oil pump. The filter cartridge is embedded in the receiving cavity and is removable for easy maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is a side view of the stator structure in this invention;

[0015] Figure 3 In this invention Figure 2 An enlarged structural diagram at point A;

[0016] Figure 4 This is a cross-sectional view of the outer shell in this invention;

[0017] Figure 5 In this invention Figure 4 A magnified structural diagram at point B;

[0018] Figure 6 This is a side view of the heat dissipation device in this invention.

[0019] Figure 7 In this invention Figure 6 A magnified structural diagram at point C;

[0020] Figure 8 This is a top view of the support component in this invention.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Outer casing; 2. Controller; 3. Stator; 31. First iron core; 32. Flat wire; 33. Insulating paper; 34. Partition plate; 35. Rectangular slot; 36. Narrow slot; 37. Elastic magnetic gap compensation structure plate; 4. Shaft; 5. Rotor; 51. Second iron core; 52. Groove; 53. Magnet; 54. Triangular slot; 55. Strip slot; 6. Cooling device; 61. Feed pipe; 62. Oil inlet chamber; 63. Capillary pore; 64. Spacer bar; 65. Oil outlet chamber; 66. Oil outlet pipe; 7. Heat dissipation device; 71. Diverter pipe; 72. Storage box; 73. Heat sink; 74. Fan assembly; 75. Mounting bolt; 8. Filter assembly; 81. Filter box; 82. Filter cartridge; 83. Sealing plate; 84. Storage chamber; 9. Support assembly; 91. Sleeve rod; 92. Slide rod; 93. Storage block; 94. Top ring; 95. Slot; 96. Elastic band. Detailed Implementation

[0023] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] Because the ends of the round wire winding retain a flared shape to facilitate wire threading, and the ends are relatively long, this part of the copper wire does not participate in generating torque but continues to generate heat, which will increase copper loss and make heat dissipation more difficult.

[0025] Therefore, in view of the above-mentioned problems, the present invention provides a motor structure, with reference to... Figure 2 , Figure 3 and Figure 5As shown, the device includes a housing 1 and a stator 3. A controller 2 is fixedly mounted on the top of the housing 1. A rotating shaft 4 is located inside the housing 1. The stator 3 is located inside the housing 1 and includes a first iron core 31 fixedly mounted inside the housing 1. The first iron core 31 has multiple rectangular slots 35 inside, which accommodate the neat arrangement of flat wires 32. Compared with traditional round wire windings, this improves the slot fill factor and makes the current transmission more stable. At the same time, the rectangular slot 35 structure facilitates the orderly embedding of the flat wires 32. Multiple flat wires 32 are embedded inside the rectangular slots 35. Embedding multiple flat wires 32 inside the rectangular slots 35 can utilize the space inside the slots to further improve the motor output torque. Two insulating... The insulating paper 33 and multiple flat wires 32 are positioned between two insulating papers 33 to prevent short circuits caused by wear of the flat wires 32. A partition 34 is provided between two adjacent flat wires 32 to prevent the flat wires 32 from rubbing against each other and damaging the insulation layer. A narrow groove 36 is opened at one end of the rectangular groove 35 facing the rotating shaft 4 to restrict the radial movement of the flat wires 32, prevent the flat wires 32 from loosening during high-speed operation, reduce magnetic flux leakage, improve the main magnetic flux utilization rate, and further reduce motor operating losses. An elastic magnetic gap compensation structure plate 37 is embedded in the edge of the narrow groove 36. The elastic magnetic gap compensation structure plate 37 is an elastic steel plate used to deform slightly with centrifugal force when the rotor 5 rotates, dynamically compensating for uneven magnetic gap.

[0026] refer to Figure 3 As shown, a rotor 5 is provided on the outside of the rotating shaft 4. The rotor 5 includes a second iron core 51 fixedly connected to the outside of the rotating shaft 4. The inside of the second iron core 51 is provided with multiple grooves 52, and two grooves 52 with an included angle of 120° are grouped together. By using permanent magnet torque plus magnetic reluctance torque, the power output of the motor is improved to adapt to high voltage and high current conditions. The tips of the two grooves 52 face the center point of the second iron core 51, and the openings of the two grooves 52 face the outer circumference of the first iron core 31, matching the air gap magnetic field formed by the stator 3, further optimizing the electromagnetic performance. Magnets 53 are provided inside the grooves 52. Triangular grooves 54 are provided on both sides of the grooves 52 inside the second iron core 51, and strip grooves 55 are provided between the two grooves 52. The arrangement of triangular grooves 54 and strip grooves 55 ensures the rationality of the magnetic circuit and avoids magnetic interference.

[0027] refer to Figure 4 and Figure 7As shown, the outer shell 1 is provided with a cooling device 6. The cooling device 6 includes two feed pipes 61 fixedly connected to the top of the outer shell 1 to stably introduce the cooling medium and realize the circulation supply of cooling oil. The top of the inner shell 1 is provided with an oil inlet chamber 62, and the bottom of the inner shell 1 is provided with an oil outlet chamber 65. Two partitions 64 are fixedly connected between the oil inlet chamber 62 and the oil outlet chamber 65. The bottom of the outer shell 1 is fixedly connected with an oil outlet pipe 66, so that the cooling oil is evenly distributed around the inner wall of the outer shell 1, which carries away the radiated heat of the shell and the iron core, avoids local heat accumulation, regulates the flow direction of the cooling oil and limits the circulation channel, and facilitates the smooth return and discharge of the cooling oil after heat absorption, realizing closed-loop circulation heat dissipation. The first iron core 31 is provided with multiple capillary holes 63 near the rectangular groove 35. The capillary holes 63 are used for the cooling oil to pass through and flow into the rectangular groove 35 to wet the outer surface of the flat wire 32.

[0028] refer to Figure 1 and Figure 6 As shown, a heat dissipation device 7 is provided at the top of the two feed pipes 61. The heat dissipation device 7 includes a diversion pipe 71 fixedly connected to the top of the two feed pipes 61, which diverts the returning cooling oil, allowing the oil to flow through different heat dissipation areas to avoid uneven heat dissipation caused by concentrated flow. A collection box 72 is fixedly connected to the outside of the diversion pipe 71, and multiple heat dissipation fins 73 are fixedly connected inside the collection box 72. The heat dissipation fins 73 are used to discharge the heat absorbed by the cooling oil from the inside of the outer casing 1 to the external environment, so that the oil temperature is reduced before it re-enters the motor circulation. Cooling is achieved by increasing the heat exchange area with multiple heat sinks 73, which conduct and dissipate the internal heat of the motor carried by the cooling oil. The heat sinks 73 extend through the top of the storage box 72 and outward to increase the contact area with the outside air. A fan assembly 74 is provided on one side of the storage box 72. Multiple mounting bolts 75 are threadedly connected between the fan assembly 74 and the storage box 72. The fan assembly 74 is located on one side of the multiple heat sinks 73 and is arranged directly opposite the heat sinks 73 to form forced airflow and accelerate the air flow on the surface of the heat sinks 73.

[0029] refer to Figure 7 As shown, a filter assembly 8 is provided on one side of the oil outlet pipe 66. The filter assembly 8 includes a filter box 81 fixedly connected to the outside of the oil outlet pipe 66, which provides a stable mounting carrier for the filter cartridge 82 and guides and limits the flow of cooling oil. The filter cartridge 82 is embedded inside the filter box 81. The filter cartridge 82 is a magnetic filter cartridge 82, which adsorbs ferromagnetic impurities such as iron core grinding debris and metal particles mixed in the oil, preventing impurities from entering the rectangular slot 35 of the stator 3 and the gap between the rotor 5 with the cooling oil circulation. The filter box 81 has a receiving cavity 84 inside. The opening of the filter cartridge 82 faces the oil outlet pipe 66. The filter cartridge 82 is embedded inside the filter box 81 through the receiving cavity 84. The embedded structure makes it easy to periodically remove the filter cartridge 82 to clean the adsorbed impurities. A sealing plate 83 is fixedly connected inside the filter box 81 to increase the sealing performance of the filter box 81 and prevent the cooling oil from leaking during the filtration process.

[0030] refer to Figure 8 As shown, a circulating oil pump is provided outside the diversion pipe 71 and the oil outlet pipe 66. A support assembly 9 is provided at the end of the diversion pipe 71 and the oil outlet pipe 66 that are close to each other. The support assembly 9 includes a sleeve rod 91 located directly above the oil outlet pipe 66. Two sliding rods 92 are slidably connected inside the sleeve rod 91. The distance between the sliding rods 92 can be adjusted by sliding the sliding rods 92 to adapt to pipelines with different installation distances. A receiving block 93 and a top ring 94 are fixedly connected at the ends of the two sliding rods 92 that are far from each other. The receiving block 93 is fitted outside the oil outlet pipe 66, and the top ring 94 is located outside the diversion pipe 71. Two elastic bands 96 are embedded inside the top ring 94. The two elastic bands 96 are fitted outside the diversion pipe 71 and form a ring-shaped limit for the oil outlet pipe 66 and the diversion pipe 71, respectively. Two slots 95 are opened inside the top ring 94 near the position of the elastic bands 96. The elastic bands 96 are fitted with the top ring 94 through the slots 95. The elastic bands 96 flexibly hug the pipeline, which can buffer vibration and impact.

[0031] The working principle of this invention is as follows: After the motor starts, the controller 2 supplies power to the stator 3 winding. When the current passes through the flat wire 32, the current conduction is relatively stable because the flat wire 32 in the rectangular slot 35 has a high density and there is a partition 34 between adjacent flat wires 32. The two layers of insulating paper 33 in the slot and the partition 34 work together to prevent interlayer short circuits or insulation failure caused by wear. The narrow slot 36 of the rectangular slot 35 facing the shaft 4 cooperates with the rotor 5 to restrict the radial movement of the flat wire 32 and reduce leakage flux.

[0032] The rotating shaft 4 drives the rotor 5 to rotate. The magnets 53 in each set of V-shaped grooves 52 generate superimposed magnetic fields. The triangular grooves 54 on both sides of the groove 52 and the strip grooves 55 between the two grooves 52 form magnetic barriers, guiding the magnetic lines of force to flow mainly along the main magnetic circuit. The torque output is increased by using permanent magnet torque and magnetic reluctance torque together, which can adapt to high voltage and high current conditions. When the rotor 5 rotates, the elastic magnetic gap compensation structure plate 37 undergoes slight deformation with centrifugal force, dynamically compensating for magnetic gap unevenness, reducing tooth harmonics, realizing dynamic adaptive magnetic gap, actively reducing noise and optimizing the magnetic circuit.

[0033] As the motor continues to run, the flat wire 32 of the stator 3 and the iron core generate heat. The circulating oil pump provides power, and the cooling oil enters the oil inlet chamber 62 inside the housing 1 through the feed pipe 61 at the top of the housing 1. The partition bar 64 separates the oil inlet chamber 62 from the oil outlet chamber 65. The cooling oil is distributed around the inner wall of the housing 1. The cooling oil flows into the rectangular groove 35 through the capillary holes 63 and directly wets the outer surface of the flat wire 32. The oil is then collected through the oil outlet chamber 65 at the bottom of the housing 1 and discharged through the oil outlet pipe 66.

[0034] The diversion pipes 71 at the top of the two feed pipes 61 distribute the return oil. When the oil flows through the heat sink 73 inside the collection box 72, the heat is conducted to the outside through the heat sink 73. The fan group 74 forms air-cooled convection, which accelerates the air flow on the surface of the heat sink 73 and exhausts the heat into the environment, thereby reducing the oil temperature. The cooled oil then enters the motor again through the feed pipe 61.

[0035] During the circulation process, the magnetic filter cartridge 82 inside the filter box 81 adsorbs ferromagnetic impurities such as iron core grinding debris and metal particles mixed in the oil, preventing impurities from entering the capillary pores 63 of the rectangular groove 35 or the gap of the rotor 5 with the cooling oil. The filter cartridge 82 is embedded inside the filter box 81 through the receiving cavity 84, and works with the sealing plate 83 to prevent leakage.

[0036] The sliding rod 92 inside the sleeve rod 91 can slide to adjust the spacing. The elastic band 96 inside the top ring 94 is fitted with the top ring 94 through the slot 95 to flexibly wrap around the pipeline, buffering the vibration and impact caused by motor operation or oil pressure pulsation, and reducing the risk of joint loosening.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor structure, comprising a housing (1) and a stator (3), characterized in that: A controller (2) is fixedly installed on the top of the outer shell (1). A rotating shaft (4) is provided inside the outer shell (1). The stator (3) is located inside the outer shell (1). The stator (3) includes a first iron core (31) fixedly installed inside the outer shell (1). The first iron core (31) has multiple rectangular slots (35) inside. Multiple flat wires (32) are embedded inside the rectangular slots (35). Two insulating papers (33) are provided inside the rectangular slots (35). The multiple flat wires (32) are located between the two insulating papers (33). A partition (34) is provided between two adjacent flat wires (32). A narrow slot (36) is provided at one end of the rectangular slot (35) facing the rotating shaft (4). An elastic magnetic gap compensation structure plate (37) is embedded on the edge of the narrow slot (36). The elastic magnetic gap compensation structure plate (37) is an elastic steel plate used to deform slightly with centrifugal force when the rotor (5) rotates, dynamically compensating for uneven magnetic gap. The rotating shaft (4) is provided with a rotor (5) on its outside. The rotor (5) includes a second iron core (51) fixedly connected to the outside of the rotating shaft (4). The second iron core (51) has multiple grooves (52) inside, and two grooves (52) with an included angle of 120° are a group. The tips of the two grooves (52) face the center point of the second iron core (51), and the openings of the two grooves (52) face the outer circumference of the first iron core (31). Magnets (53) are provided inside the grooves (52). Triangular grooves (54) are provided on both sides of the grooves (52) inside the second iron core (51), and a strip groove (55) is provided between the two grooves (52). The outer shell (1) is provided with a cooling device (6), which includes two feed pipes (61) fixedly connected to the top of the outer shell (1). The top of the inner shell (1) is provided with an oil inlet chamber (62), and the bottom of the inner shell (1) is provided with an oil outlet chamber (65). Two spacers (64) are fixedly connected between the oil inlet chamber (62) and the oil outlet chamber (65). The bottom of the outer shell (1) is fixedly connected with an oil outlet pipe (66). The top of the two feed pipes (61) is provided with a heat dissipation device (7). The heat dissipation device (7) includes a diversion pipe (71) fixedly connected to the top of the two feed pipes (61). A storage box (72) is fixedly connected to the outside of the diversion pipe (71). Multiple heat sinks (73) are fixedly connected inside the storage box (72). The heat sinks (73) are used to discharge the heat absorbed by the cooling oil from the inside of the outer shell (1) to the external environment.

2. The motor structure according to claim 1, characterized in that: The first iron core (31) has multiple capillary holes (63) located near the rectangular groove (35). The capillary holes (63) are used to allow cooling oil to pass through and flow into the rectangular groove (35) to wet the outer surface of the flat wire (32).

3. The motor structure according to claim 1, characterized in that: The heat sink (73) extends through the top of the storage box (72) and outwards. A fan assembly (74) is provided on one side of the storage box (72). The fan assembly (74) and the storage box (72) are connected by multiple mounting bolts (75) with internal threads. The fan assembly (74) is located on one side of the multiple heat sinks (73).

4. The motor structure according to claim 2, characterized in that: A filter assembly (8) is provided on one side of the oil outlet pipe (66). The filter assembly (8) includes a filter box (81) fixedly connected to the outside of the oil outlet pipe (66). A filter cartridge (82) is embedded inside the filter box (81). The filter cartridge (82) is a magnetic filter cartridge (82) used to adsorb ferromagnetic impurities in the cooling oil.

5. The motor structure according to claim 4, characterized in that: The filter box (81) has a receiving cavity (84) inside. The opening of the filter cartridge (82) faces the oil outlet pipe (66). The filter cartridge (82) is embedded in the filter box (81) through the receiving cavity (84). A sealing plate (83) is fixedly connected inside the filter box (81).

6. The motor structure according to claim 3, characterized in that: A circulating oil pump is provided outside the diversion pipe (71) and the oil outlet pipe (66). A support assembly (9) is provided at the end of the diversion pipe (71) and the oil outlet pipe (66) that are close to each other. The support assembly (9) includes a sleeve rod (91) located directly above the oil outlet pipe (66). Two slide rods (92) are slidably connected inside the sleeve rod (91). A receiving block (93) and a top ring (94) are fixedly connected at the ends of the two slide rods (92) that are far from each other. The receiving block (93) is sleeved on the outside of the oil outlet pipe (66), and the top ring (94) is located on the outside of the diversion pipe (71).

7. The motor structure according to claim 6, characterized in that: The top ring (94) has two elastic bands (96) embedded inside. The two elastic bands (96) are sleeved on the outside of the diversion pipe (71). The top ring (94) has two slots (95) near the elastic bands (96) inside. The elastic bands (96) are fitted with the top ring (94) through the slots (95).

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