Motor housing assembly structure

Abstract

The present invention discloses a motor housing assembly structure, which relates to the technical field of motor assembly, and includes a motor housing assembly, a stator assembly, and a base. A U-shaped frame is fixedly provided at the top of the base, a placement table is fixedly provided at the middle position of the top of the base, and the placement table is located directly below the U-shaped frame. A cylinder is fixedly provided at the top of the horizontal portion of the U-shaped frame. The housing assembly includes an outer shell and a plurality of fixings, which are circumferentially distributed and fixedly provided on the inner wall of the outer shell, and a fixing portion is provided on one side of the fixing. The present invention provides support to the stator assembly and ensures the coaxiality of the stator assembly and the motor shaft by engaging each fixing portion with each connecting groove on the stator assembly. At the same time, the present invention can effectively clamp and fix the motor housing during the assembly of the motor end cover.

Description

Technical Field

[0001] The invention relates to the technical field of motor assembly, and in particular to a motor housing assembly structure. Background Art

[0002] The motor that people usually refer to is the electronic starter. The motor refers to an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. Its main function is to generate driving torque. As a power source for electrical appliances or various machines, its main function is to convert electric energy into mechanical energy. The motor drives the starter rotor to rotate through the energized coil in the magnetic field. The small gear on the rotor drives the engine flywheel to rotate, thereby driving the crankshaft to rotate and start the car. The two component innovations of the new low-cost spark plug with a ceramic core base and the starter laid the technical foundation for the development of automobiles.

[0003] A motor generally includes a shaft, a rotor, and a stator. A plurality of magnets may be provided in the rotor. The motor is classified as an interior permanent magnet (IPM) motor, in which the magnets are inserted into the core of the rotor, or a surface permanent magnet (SPM) motor, in which the magnets are attached to the surface of the core of the rotor.

[0004] The existing motor housing is usually assembled by pressing the stator end cover of the motor with the motor housing, usually using a hammer to knock it in and fix it, or by pressing it with a pressing device. However, during the pressing process, the motor housing needs to be fixed to prevent the housing from sliding during the pressing process, which will cause the end cover to fail to press. Therefore, it is necessary to add clamping and fixing parts to the pressing device, which will increase the pneumatic components of the device, resulting in a high production cost of the pressing device. In addition, using the existing assembly method, the stator and the housing are assembled by gluing. This assembly structure requires load-bearing, which makes the stator equivalent to being in a cantilever state. There is a risk of failure under long-term alternating electromagnetic forces, and it is not easy to ensure coaxiality. Summary of the invention

[0005] In order to solve the problems of the prior art, the present invention specifically adopts the following technical solutions:

[0006] The present invention provides a motor housing assembly structure, comprising a motor housing component, a stator component and a base;

[0007] A U-shaped frame is fixedly provided at the top of the base, a placing platform is fixedly provided at the middle position of the top of the base, the placing platform is located directly below the U-shaped frame, a cylinder is fixedly provided at the top of the horizontal part of the U-shaped frame, a cross bar is slidably provided in the U-shaped frame, the output end of the cylinder passes through the top of the U-shaped frame and extends into the U-shaped frame and is fixedly connected to the top of the cross bar, a pressure head is fixedly provided at the middle position of the bottom end of the cross bar, a fixing seat is fixedly provided on one side adjacent to the horizontal parts of the U-shaped frame, a push plate is slidably provided on one side adjacent to the fixing seats, and a clamp is fixedly provided on one side adjacent to the push plates;

[0008] The shell assembly includes an outer shell and multiple fixing parts, which are distributed circumferentially and fixedly arranged on the inner wall of the outer shell and are respectively connected and fixed to the outer shell; a fixing part is arranged on a side of the fixing part away from the outer shell, and multiple connecting grooves are arranged on the stator assembly, and the fixing part is clamped with the connecting grooves.

[0009] A further solution is that a first slide groove is provided in the vertical portion of the U-shaped frame, and a second slide groove is provided in the fixed seat.

[0010] A further solution is that a slider is slidably provided in the first slide groove, the slider is fixedly connected to the side adjacent to the cross bar, a rack plate is fixedly provided at the rear bottom end of the slider, and a fixed plate is fixedly provided in the second slide groove.

[0011] A further solution is that a screw is rotatably provided on the lower inner wall of the slide groove one, the other end of the screw extends into the adjacent slide groove two and is rotatably connected to the fixed plate, and a gear is fixedly sleeved on the screw located in the slide groove one, and the gear is meshed with the adjacent rack plate gear.

[0012] A further solution is that a slide plate 1 is threadedly sleeved on the screw located in the slide groove 2, and a connecting rod is symmetrically fixedly connected to the side of the slide plate close to the clamping plate. The other end of the connecting rod passes through the fixed plate and extends to the other side of the fixed plate and is fixedly connected to the slide plate 2. A slide plate 3 is slidably arranged in the slide groove 2, and the slide plate 3 is located on the side of the slide plate close to the clamping plate, and the end of the push plate away from the clamping plate extends into the slide groove 2 and is fixedly connected to the side adjacent to the slide plate 3. A threaded seat matching the screw is passed through and fixedly embedded on the slide plate 1.

[0013] A further solution is that a side of the second slide plate close to the third slide plate is fixedly connected with a spring, and the other end of the spring is fixedly connected to a side adjacent to the third slide plate.

[0014] A further solution is that the shell assembly also includes a mounting portion and a plurality of blades, the mounting portion is arranged inside the shell assembly, a gap channel is provided between the mounting portion and the shell assembly, and the mounting portion is used to set the rotor assembly of the motor; the plurality of blades are connected to the shell assembly and the mounting portion, and the gap channel includes a plurality of air ducts.

[0015] A further solution is that a plurality of fixing members are connected to the blades, and the stator assembly is fixedly connected to the mounting portion.

[0016] A further solution is that the number of the blades is a positive integer multiple of the number of the fixing members.

[0017] A further solution is that a shaft is provided in the middle position inside the outer shell, bearings are symmetrically installed on the surfaces of both ends of the outer circumference of the shaft, a rotor core is sleeved between the bearings and located in the middle position of the outer circumference of the shaft, a plurality of mounting grooves are evenly provided on the surface of the rotor core, a tension detector is fixedly installed on the bottom surface inside the mounting groove, and a metal cable ball is fixedly installed on the middle position of the surface of one end of the tension detector.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention arranges a plurality of fixing members on the inner wall of the motor housing assembly and arranges a fixing portion on each fixing member, and each fixing portion is engaged and connected with each connecting groove on the stator assembly, thereby providing support to the stator assembly in different directions, so that the motor will not have the risk of failure when subjected to alternating electromagnetic forces during long-term operation in the later stage. In addition, the present invention ensures the coaxiality of the stator assembly and the motor shaft by encircling the fixing member on the housing assembly.

[0020] The present invention is provided with gears and springs. When in use, the motor housing is placed on a placing table, and then the end cover is sleeved on the rotating shaft. At this time, the cross bar is pushed downward by the cylinder, so that the cross bar pushes the slider to move downward in the first slide groove. At this time, the slider will drive the rack plate to move downward, thereby driving the gear to rotate through the rack plate, and then the gear drives the screw to rotate, and the slide plate is driven by the screw to slide in the second slide groove, so that the slide plate drives the slide plate to slide through the connecting rod, so that the slide plate drives the push plate to move through the slide plate three, and then the push plate drives the clamping plate to move. When the pressure head contacts the end cover, the slide plate three contacts the inner wall of the side adjacent to the second slide groove, and the clamping plate clamps the motor housing and fixes it. Then the cross bar continues to move downward, so that the end cover and the motor housing are assembled through the pressure head, and the slide plate two will continue to slide in the second slide groove, so that the slide plate two squeezes the spring, so as not to affect the contact between the clamping plate and the motor housing, and at the same time, it is avoided that the clamping plate applies a large force to the motor housing, thereby causing the phenomenon of damage to the electric motor housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a motor housing assembly provided by an embodiment of the present invention;

[0022] Figure 2 A front view of a stator assembly provided in an embodiment of the present invention;

[0023] Figure 3 for Figure 1 The enlarged view of point A in the middle;

[0024] Figure 4 A schematic diagram of the structure of a motor rotor provided by an embodiment of the present invention;

[0025] Figure 5 A side view of a slider and a slide groove provided in an embodiment of the present invention;

[0026] Figure 6 A schematic diagram of the structure of a motor housing after assembly provided by an embodiment of the present invention;

[0027] Figure 7 A schematic diagram of the assembly structure of a motor housing and a stator assembly provided in an embodiment of the present invention;

[0028] The accompanying drawings are marked as follows: 10-outer shell; 11-fixing part; 110-fixing part; 12-mounting part; 13-blade; 2-stator assembly; 20-base; 21-U-shaped frame; 210-slideway one; 211-slider; 212-rack plate; 22-placing table; 23-cylinder; 24-cross bar; 25-pressure head; 26-fixing seat; 260-slideway two; 261-fixing plate; 27-push plate; 28-clamp plate; 29-connecting groove; 3-clearance channel; 40-screw; 41-gear; 42-slide plate one; 43-connecting rod; 44-slide plate two; 45-slide plate three; 46-spring; 51-rotor core; 52-mounting groove; 53-tension detector; 54-metal cable ball. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] like Figure 1-7 As shown, one embodiment of the present invention discloses a motor housing assembly structure, including a motor housing assembly, a stator assembly 2 and a base 20;

[0031] A U-shaped frame 21 is fixedly provided at the top of the base 20, a placing table 22 is fixedly provided at the middle position of the top of the base 21, and the placing table 22 is located directly below the U-shaped frame 21. A cylinder 23 is fixedly provided at the top of the horizontal portion of the U-shaped frame 21, a cross bar 24 is slidably provided inside the U-shaped frame 21, an output end of the cylinder 23 passes through the top of the U-shaped frame 21 and extends into the U-shaped frame 21 and is fixedly connected to the top of the cross bar 24, a pressure head 25 is fixedly provided at the middle position of the bottom end of the cross bar 24, a fixing seat 26 is fixedly provided at one side adjacent to the horizontal portions of the U-shaped frame 21, a push plate 27 is slidably provided at one side adjacent to the fixing seats 26, and a clamping plate 28 is fixedly provided at one side adjacent to the push plates 27;

[0032] In this embodiment, a first slide groove 210 is provided in the vertical portion of the U-shaped frame 21 , and a second slide groove 260 is provided in the fixing seat 26 .

[0033] In this embodiment, a slider 211 is slidably provided in the slide groove 1 210 , and the slider 211 is fixedly connected to the side adjacent to the cross bar 24 . A rack plate 212 is fixedly provided at the rear bottom end of the slider 211 , and a fixed plate 261 is fixedly provided in the slide groove 260 .

[0034] In this embodiment, a screw rod 40 is rotatably provided on the lower inner wall of the slide groove 1 210, and the other end of the screw rod 40 extends into the adjacent slide groove 260 and is rotatably connected to the fixed plate 261. A gear 41 is fixedly sleeved on the screw rod 40 located in the slide groove 1 210, and the gear 41 is meshed with the adjacent rack plate 212 gear.

[0035] Through the above arrangement, this embodiment has a slide groove 1 in the vertical part of the U-shaped frame. The cylinder pushes the cross bar downward, so that the cross bar pushes the slider to move downward in the slide groove 1. At this time, the slider will drive the rack plate to move downward, thereby driving the gear to rotate through the rack plate, and then the gear drives the screw to rotate.

[0036] In this embodiment, a slide plate 42 is threadedly sleeved on the screw rod 40 located in the second slide groove 260, and a connecting rod 43 is symmetrically fixedly connected to the side of the slide plate 42 close to the clamping plate 28. The other end of the connecting rod 43 passes through the fixed plate 261 and extends to the other side of the fixed plate 261 and is fixedly connected to the slide plate 2 44. A slide plate 3 45 is slidably provided in the second slide groove 260, and the slide plate 3 45 is located on the side of the slide plate 42 close to the clamping plate 28. The end of the push plate 27 away from the clamping plate 28 extends into the second slide groove 260 and is fixedly connected to the side adjacent to the slide plate 3 45. A threaded seat matching the screw rod 40 is fixedly embedded on the slide plate 1 42.

[0037] It should be noted that in this embodiment, the screw drives the slide plate 1 to slide in the slide groove 2, so that the slide plate 1 drives the slide plate 2 to slide through the connecting rod, so that the slide plate 2 drives the push plate to move through the slide plate 3, and then the push plate drives the clamping plate to move.

[0038] In this embodiment, a side of the second slide plate 42 close to the third slide plate 45 is fixedly connected with a spring 46 , and the other end of the spring 46 is fixedly connected to a side adjacent to the third slide plate 45 .

[0039] The applicant also needs that, by setting a spring, the present embodiment can increase the movement stroke of the slide plate 2 after the clamp plate contacts the motor housing, thereby increasing the stroke of the rack plate and the slider, thereby increasing the stroke of the crossbar and the pressure head.

[0040] When the assembly structure provided by the present embodiment is in use, the motor housing is placed on the placing table, and then the end cover is sleeved on the rotating shaft. At this time, the cross bar is pushed downward by the cylinder, so that the cross bar pushes the slider to move downward in the slide groove 1. At this time, the slider will drive the rack plate to move downward, thereby driving the gear to rotate through the rack plate, and then the gear drives the screw to rotate, and the slide plate 1 is driven by the screw to slide in the slide groove 2, so that the slide plate 1 drives the slide plate 2 to slide through the connecting rod, so that the slide plate 2 drives the push plate to move through the slide plate 3, and then the push plate drives the splint to move. When the pressure head conflicts with the end cover, at this time, the slide plate 3 and the end cover collide with each other. The inner wall of the adjacent side of the second slide groove contacts each other, and the clamping plate clamps the motor housing and fixes it. Then the cross bar continues to move downward, so that the end cover and the motor housing are assembled through the pressure head. At the same time, the second slide plate will continue to slide in the second slide groove, so that the second slide plate squeezes the spring. When the assembly is completed, the cylinder drives the cross bar to move upward, so that the cross bar drives the slider to move upward, and then drives the screw rod to move in the opposite direction through the rack plate and the gear, so that the first slide plate drives the second slide plate to move in the opposite direction, so that the second slide plate drives the third slide plate to move in the opposite direction through the spring, and then drives the push plate and the clamping plate to move in the opposite direction through the third slide plate, thereby completing the entire assembly operation.

[0041] In this embodiment, a shaft 5 is provided in the middle position inside the outer shell, bearings 50 are symmetrically installed on the surfaces of both ends of the outer circumference of the shaft 5, a rotor core 51 is sleeved between the bearings 50 and located in the middle position of the outer circumference of the shaft 50, a plurality of groups of mounting grooves 52 are evenly opened on the surface of the rotor core 51, a tension detector 53 is fixedly installed on the bottom surface of the mounting groove 52, and a metal cable ball 54 is fixedly installed on the middle position of the surface of one end of the tension detector 53.

[0042] The embodiment of the present invention adopts a tension detector. During actual use, since the magnetic pole has magnetic force, the metal cable ball can be adsorbed. At this time, the magnetic adsorption will cause the metal cable ball to have an outward pulling force on the tension detector. The tension detector can detect the size of the tension in real time. Once the tension is less than the preset range, it means that the magnetic pole has lost its function. At this time, the personnel can be alerted to replace it in time. Since the installation position of the tension detector can be located, the fault can be quickly located, which is very convenient. Since the magnetic pole and the rotor core are connected by a retaining ring and an installation groove, loading and unloading operations can be facilitated, which shortens the maintenance time. It has the advantages of convenient loading and unloading and fault location.

[0043] The outer shell assembly includes an outer shell 10 and multiple fixing parts 11. The multiple fixing parts 11 are distributed circumferentially and fixedly arranged on the inner wall of the outer shell 10, and are respectively connected and fixed to the outer shell; a fixing part 110 is arranged on the side of the fixing part 11 away from the outer shell, and multiple connecting grooves 23 are arranged on the stator assembly 2, and the fixing part 110 is clamped with the connecting groove 23.

[0044] The number of the fixing members in this embodiment is set to three. It should be noted that the number of the fixing members can be set according to actual needs, and the present invention does not limit this.

[0045] It should be noted that the connection grooves 23 of this embodiment are all arc-shaped grooves, and the fixing parts 110 of each fixing member 11 are cylindrical. There is a gap of 0.1mm between each connection groove 23 and each fixing part 110 during assembly, and each connection groove 23 and each fixing part 110 are fixed by gluing. The diameter of the cylindrical fixing part 110 of each fixing member 11 is 2mm, and the thickness of each fixing member 11 itself is 0.92mm. The diameter of each fixing part 110 is slightly larger than the thickness of each fixing member 11 itself, which is conducive to eliminating the vibration of the stator assembly 2 when the motor is running. During assembly, glue can be applied first on the surface of the fixing portion 110 of each fixing part 11 and the connecting groove 23 of the stator assembly 2. After the fixing portion 110 of each fixing part 11 and the connecting groove 23 of the stator assembly 2 are aligned with each other, the stator assembly 2 is axially moved to a preset position on the outer shell 10 of the motor. This assembly method has a better fixing effect and is simple to operate. It ensures the positioning between the stator assembly 2 and the outer shell 10 and prevents the stator assembly 2 from vibrating at high speed.

[0046] It should also be noted that the fixing member 11 and the housing 10 in this embodiment can be manufactured by a mold and integrally formed, so it is not necessary to assemble the fixing member 11 to ensure the processing accuracy. Of course, different processing and manufacturing methods can also be selected according to actual application conditions.

[0047] In this embodiment, a plurality of fixing members are arranged on the inner wall of the motor housing assembly and a fixing portion is arranged on each fixing member. Each fixing portion is engaged and connected with each connecting groove on the stator assembly, thereby providing support to the stator assembly in different directions, so that the motor will not have the risk of failure when subjected to alternating electromagnetic forces during long-term operation in the later stage. In addition, the present invention ensures the coaxiality of the stator assembly and the motor shaft by surrounding the fixing member on the housing assembly.

[0048] In this embodiment, the shell assembly also includes a mounting portion 12 and a plurality of blades 13. The mounting portion 12 is arranged inside the shell assembly. There is a gap channel 3 between the mounting portion 12 and the shell assembly. The mounting portion 12 is used to set the rotor assembly of the motor; the plurality of blades are connected to the shell assembly and the mounting portion 12, and the gap channel 3 includes a plurality of air ducts.

[0049] In this embodiment, the fixing member 11 is connected to the blade 13 , and the stator assembly 2 is fixedly connected to the mounting portion 12 .

[0050] In this embodiment, the number of fixing members is set to three, and the number of blades is set to nine, which is three times the number of fixing members. This can not only ensure the air flow effect in the air duct, but also enhance the connection strength of the fixing members to a certain extent. It should be noted that the number of blades and the number of fixing members can be set according to different application scenarios.

[0051] The mounting portion 12 is used to mount the rotor assembly of the motor, and the nine blades 13 are respectively connected to the housing 10 and the mounting portion 12, dividing the gap channel 3 into a plurality of air ducts for ventilation. The three fixing members 11 are respectively connected to three blades of the nine blades 13, and the stator assembly 2 is fixed to the mounting portion 12, ensuring that the stator assembly 2 has a better fixing effect.

[0052] It should also be noted that the interconnected fixing members 11 and the blades 13 in this embodiment are integrally formed, which can simplify the assembly steps and increase the connection strength between the fixing members 11 and the blades 13. Of course, the entire housing can also be directly cast by a mold, which is more convenient to manufacture.

[0053] It should be noted that the outer diameter of the stator assembly 2 in this embodiment is consistent with the outer diameter of the mounting portion 12, so that the surface of the air duct is relatively smooth, ensuring the flow effect of the gas in the air duct. The stator assembly 2 and the mounting portion 12 are fixed by gluing, so that the stator assembly 2 and the mounting portion 6 have better connection strength, and when the motor rotates, the positioning between the stator assembly 2 and the outer shell can be ensured to prevent the stator assembly 2 from fluttering at high speed.

[0054] The assembly structure of the motor outer shell and stator assembly provided in this embodiment, when the motor is subjected to long-term alternating electromagnetic force, has a stable stress state at all times, and there is no risk of failure, because the stator assembly has the pulling force of the mounting portion of the outer shell in the axial direction and the supporting force of the three fasteners of the outer shell in the radial direction. This ensures the coaxiality of the stator assembly and the motor shaft.

[0055] Finally, it should be noted that the above only describes in detail the specific embodiments of the present invention. However, the present invention is not limited to the specific embodiments described above. Equivalent modifications and substitutions made by those skilled in the art to the present invention are also within the scope of the present invention. Therefore, equal changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of the present invention.

Claims

1. A motor housing assembly structure, comprising a motor housing assembly, a stator assembly (2) and a base (20), characterized in that: A U-shaped frame (21) is fixedly provided at the top of the base (20), a placement table (22) is fixedly provided at the middle position of the top of the base (20), and the placement table (22) is located directly below the U-shaped frame (21). A cylinder (23) is fixedly provided at the top of the horizontal portion of the U-shaped frame (21), a cross bar (24) is slidably provided inside the U-shaped frame (21), an output end of the cylinder (23) passes through the top of the U-shaped frame (21) and extends into the U-shaped frame (21) and is fixedly connected to the top of the cross bar (24), a pressure head (25) is fixedly provided at the middle position of the bottom end of the cross bar (24), a fixed seat (26) is fixedly provided at one side adjacent to the horizontal portions of the U-shaped frame (21), a push plate (27) is slidably provided through one side adjacent to the fixed seats (26), and a clamping plate (28) is fixedly provided at one side adjacent to the push plates (27); The housing assembly comprises an outer shell (10) and a plurality of fixing members (11); the plurality of fixing members (11) are circumferentially distributed and fixedly arranged on the inner wall of the outer shell (10), and are respectively connected and fixed to the outer shell (10); a fixing portion (110) is arranged on a side of the fixing member (11) away from the outer shell (10); a plurality of connecting grooves (29) are arranged on the stator assembly (2), and the fixing portion (110) is clamped with the connecting grooves (29); The vertical portion of the U-shaped frame (21) is provided with a first slide groove (210), and the fixed seat (26) is provided with a second slide groove (260); A slider (211) is slidably disposed in each of the first slide grooves (210), each of the sliders (211) is fixedly connected to a side adjacent to the cross bar (24), a rack plate (212) is fixedly disposed at the rear bottom end of each of the sliders (211), and a fixing plate (261) is fixedly disposed in each of the second slide grooves (260); A screw rod (40) is rotatably provided on the lower inner wall of the first slide groove (210), the other end of each screw rod (40) extends into the adjacent second slide groove (260) and is rotatably connected to the fixed plate (261), and a gear (41) is fixedly sleeved on the screw rod (40) located in the first slide groove (210), and each gear (41) is meshed with a gear of the adjacent rack plate (212); The screw rod (40) located in the second slide groove (260) is threadedly sleeved with a slide plate one (42), and the slide plate one (42) is symmetrically fixedly connected to a connecting rod (43) on one side close to the clamping plate (28), and the other end of the connecting rod (43) passes through the fixed plate (261) and extends to the other side of the fixed plate (261) and is fixedly connected to the slide plate two (44), and the slide plate three (45) is slidably provided in the second slide groove (260), and the slide plate three (45) is located on the side of the slide plate two (44) close to the clamping plate (28), and the end of the push plate (27) away from the clamping plate (28) extends into the second slide groove (260) and is fixedly connected to the side adjacent to the slide plate three (45), and a threaded seat matching the screw rod (40) is fixedly embedded on the slide plate one (42); A spring (46) is fixedly connected to one side of the second slide plate (44) close to the third slide plate (45), and the other end of the spring (46) is fixedly connected to the adjacent side of the third slide plate (45).

2. The motor housing assembly structure according to claim 1, characterized in that: The housing assembly further comprises a mounting portion (12) and a plurality of blades (13); the mounting portion (12) is arranged inside the housing assembly; a gap channel (3) is provided between the mounting portion (12) and the housing assembly; the mounting portion (12) is used to arrange a rotor assembly of the motor; the plurality of blades are connected to the housing assembly and the mounting portion (12); the gap channel (3) comprises a plurality of air ducts.

3. The motor housing assembly structure according to claim 2, characterized in that: A plurality of fixing members (11) are connected to the blades (13), and the stator assembly (2) is fixedly connected to the mounting portion (12).

4. The motor housing assembly structure according to claim 2, characterized in that: The number of the blades (13) is a positive integer multiple of the number of the fixing members (11).

5. The motor housing assembly structure according to claim 1, characterized in that: A shaft is provided in the middle of the outer shell (10), bearings are symmetrically mounted on the surfaces of both ends of the outer circumference of the shaft, a rotor core (51) is sleeved between the bearings and located in the middle of the outer circumference of the shaft, a plurality of groups of mounting grooves (52) are evenly arranged on the surface of the rotor core (51), a tension detector (53) is fixedly mounted on the bottom surface of the mounting groove (52), and a metal cable ball (54) is fixedly mounted on the middle of one end surface of the tension detector (53).

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