Fan guard of a motor assembly

Abstract

The present invention belongs to the technical field of electric motor components, and specifically is a fan guard of an electric motor component, including a motor module, a guard device is provided at the bottom end of the motor module, the guard device includes a built-in insert cylinder, an isolation retaining ring is provided on the inner wall of the built-in insert cylinder, a fan blade component is provided at the axis of the built-in insert cylinder, and a mesh cover component is provided at the bottom of the built-in insert cylinder. The device is generally independently arranged at the bottom of the motor module to provide a heat dissipation function for the motor module. Since the filter screen needs to filter dust and impurities in the air, the device needs to be cleaned and replaced frequently after being used for a period of time. After cleaning, the filter screen can be repeatedly shaken by a small air pump to compress the cushion cylinder, thereby quickly drying the water stains on the outer surface of the filter screen and the inside of the mesh, and putting it into use in time.

Description

Technical Field

[0001] The invention belongs to the technical field of motor components, in particular to a fan guard of a motor component. Background Art

[0002] Motors that operate under extended conditions can generate excessive heat. The high temperatures caused by these conditions can degrade motor performance and shorten the overall life of the motor. To avoid these problems, many motors incorporate one or more fans that move outside air over the outer surface of the motor to draw away and dissipate the heat. These fans may be connected to a shroud that helps direct the majority of the moving fluid toward the outer surface of the motor.

[0003] Since the gas flow will drive the dust and impurities in the air to pass through the motor's mesh cover, the mesh cover not only plays the role of isolating the fan blades, but also plays a certain filtering role. However, the mesh cover needs to be cleaned and replaced frequently after using it for a period of time, otherwise the mesh holes will be blocked, which will easily lead to a decrease in the heat dissipation function of the motor. However, the cleaned mesh cover also needs to be dried in the sun and cannot be used immediately. Therefore, the motor cannot work normally during this period. Therefore, the fan guard of the motor needs to be improved. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention solves the technical problems thereof by adopting a technical solution: a fan guard of a motor assembly, comprising a motor module, wherein a guard device is arranged at the bottom end of the motor module;

[0005] The shield device comprises a built-in insert tube, an inner wall of the built-in insert tube is provided with an isolation baffle ring, a fan blade component is provided at the axis of the built-in insert tube, and a mesh cover component is provided at the bottom of the built-in insert tube;

[0006] The mesh cover component comprises a bottom collar, the inner wall of the bottom collar is clamped with a filter mesh cover, the upper surface of the bottom collar is evenly fixed with a wall-adhering slide plate, the top of the inner cavity of the wall-adhering slide plate is fixedly connected with a compression spring, the inner cavity of the bottom collar is evenly provided with auxiliary equipment, the top of the wall-adhering slide plate passes through the side socket of the built-in insert tube, so that the bottom collar can be attached to the lower surface of the built-in insert tube;

[0007] The auxiliary equipment includes a fixed support plate, the lower surface of which is fixedly connected to a small air pump, the bottom of the small air pump exhaust port is fixedly connected to a compression cushion tube, the bottom end of the compression cushion tube is fixedly connected to a limiting bottom cover, the upper surface of the limiting bottom cover is evenly fixed with embedded plug rods, the small air pump draws air through the side air inlet groove, and then pressurizes the compression cushion tube, thereby pushing the bottom ring.

[0008] Furthermore, the fan blade component includes a rotating shaft cylinder, and the lower part of the inner wall of the rotating shaft cylinder is fixedly connected with an plug-in inner disk, the plug-in inner disk is divided into two parts, an external ring shell and an inner disk of the inner wall, and the inner disk and the ring shell can rotate relative to each other, and a rotating motor is fixedly connected at the axis center of the lower surface of the plug-in inner disk, and the inner disk part is fixedly connected to the shaft rod of the rotating motor, and a buffer pad is fixedly connected at the axis center of the inner cavity of the plug-in inner disk, and a blade concentrating tube is fixedly connected to the top of the buffer pad, and rotating fan blades are evenly arranged on the upper part of the inner cavity of the blade concentrating tube.

[0009] Furthermore, the outer surface of the compression pad tube is slidably connected to the inner wall of the bottom sleeve ring through a reserved opening, the upper surface of the limiting bottom cover is fixedly connected to the inner cavity of the bottom sleeve ring through an embedded insertion rod, the outer surface of the fixed support plate is fixedly connected to the outer surface of the built-in insertion tube, the outer surface of the wall-attached slide plate passes through the inner cavity of the built-in insertion tube through a slot, and the bottom of the compression spring and the outer surface of the built-in insertion tube squeeze each other.

[0010] Furthermore, the bottom end of the rotating shaft cylinder is rotatably connected to the axis of the outer surface of the filter screen cover, the lower surface of the rotating motor is fixedly connected to the outer surface of the filter screen cover, the outer surface of the rotating fan blade is rotatably connected to the inner wall of the built-in plug-in cylinder, and the top of the outer surface of the built-in plug-in cylinder is plugged into the inner wall of the motor module. A protective ring shell is fixedly connected to the side of the upper surface of the fixed support plate away from the built-in plug-in cylinder, a thrust spring is fixedly connected to the inner wall of the protective ring shell, and a pressure-sensitive clamping plate is fixedly connected to the side of the thrust spring close to the built-in plug-in cylinder, and the bottom of the pressure-sensitive clamping plate is slidably connected to the upper surface of the fixed support plate through a guide groove.

[0011] Furthermore, the isolation retaining ring includes a segmented slide plate, the upper surface of the segmented slide plate is evenly provided with spherical rotating holes, and the upper surface of the segmented slide plate is rotatably connected with embedded rotating beads through the spherical rotating holes. In order to avoid serious wear problems caused by direct contact between the rotating fan blades and the outer surface of the segmented slide plate, embedded rotating beads are arranged above the segmented slide plate to reduce wear problems. The lower surface of the segmented slide plate is fixedly connected with a pressure-sensitive gasket, and the outer surface of the pressure-sensitive gasket is fixedly connected to the inner wall of the built-in insert.

[0012] Further, the blade concentration cylinder comprises a top rotating cylinder, the upper part of the inner cavity of the top rotating cylinder is evenly provided with blade slots, the inner cavity of the top rotating cylinder is evenly provided with arcuate folding strips through the blade slots, the end of the arcuate folding strip close to the top rotating cylinder is fixedly connected with a thick spring, and the top of the thick spring is fixedly connected with a docking sleeve. The end of the arcuate folding strip close to the top rotating cylinder is slidably connected with the inner cavity of the top rotating cylinder through the blade slot, and the side of the arcuate folding strip away from the top rotating cylinder is rotatably connected with a wall-attached roller, and the outer surface of the wall-attached roller is rollingly connected with the outer surface of the rotating shaft cylinder.

[0013] Furthermore, through openings are evenly opened at the axis center of the bottom of the inner cavity of the top rotating drum, the top of the buffer pad is fixedly connected to the axis center of the lower surface of the top rotating drum through the through opening, and the root of the outer surface of the rotating fan blade is fixedly connected to the inner cavity of the top rotating drum through a blade slot.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The device is generally independently arranged at the bottom of the motor module to provide heat dissipation for the motor module. Since the filter cover needs to filter dust and impurities in the air, the device needs to be cleaned and replaced frequently after a period of use. The cleaned filter cover can be repeatedly shaken by a small air pump to compress the cushion cylinder, so as to quickly dry the water stains on the outer surface of the filter cover and the inside of the mesh, and put it into use in time.

[0016] 2. Since the mesh cover component and the protective cover equipment can be separated, and the actual air intake of the built-in plug-in tube after separation will be larger, so when the motor module needs urgent heat dissipation, the bottom ring can be opened to quickly increase the air intake flow rate to achieve further heat dissipation. In the process of the bottom ring fitting to the built-in plug-in tube, the air pressure inside the device can pass through the mesh of the filter mesh cover in the reverse direction to discharge impurities stuck in the mesh of the filter mesh cover, reducing the risk of clogging.

[0017] 3. After the device is installed at the bottom of the motor module, if it is only plugged in, the built-in plug-in tube will easily wear against the inner wall of the motor and cause slippage and looseness. Therefore, in order to avoid this problem, the external pressure-sensitive clamping plate will slide to the side that fits the outer surface of the motor module through the sliding groove of the fixed support plate under the thrust control of the thrust spring, and then clamp the outer surface of the motor module. The extrusion force is fed back by the pressure-sensitive clamping plate to ensure that the clamping is tight enough to avoid looseness.

[0018] 4. After the rotating fan blades have been working continuously for a long time, dust will be absorbed on the outer surface. At this time, the weight of the rotating fan blades will increase. When the rotating fan blades are placed on top of the segmented slide again, the pressure-sensitive washers can weigh the rotating fan blades to determine whether the rotating fan blades need to be cleaned, thereby ensuring that the blowing capacity of the rotating fan blades is always good. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the shield device of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the mesh cover component of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the auxiliary equipment of the present invention;

[0023] Figure 5 is a cross-sectional view of a fan blade component of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the isolation retaining ring of the present invention;

[0025] Figure 7 It is a cross-sectional view of the blade concentrating tube of the present invention.

[0026] In the figure: 1. Motor module; 2. Guard device; 21. Built-in plug-in cylinder; 22. Isolation retaining ring; 3. Mesh cover component; 31. Bottom ring; 32. Filter mesh cover; 33. Wall-attached slide plate; 34. Compression spring; 5. Auxiliary equipment; 51. Fixed support plate; 52. Protective ring shell; 53. Thrust spring; 54. Pressure-sensitive clamp; 55. Small air pump; 56. Compression pad cylinder; 57. Limiting bottom cover; 4. Fan blade component; 41. Rotating shaft cylinder; 42. Rotating motor; 43. Plug-in inner disk; 44. Buffer cushion; 45. Blade concentration cylinder; 46. Rotating fan blade; 221. Segmented slide plate; 222. Pressure-sensitive gasket; 223. Embedded rotating bead; 451. Top rotating cylinder; 452. Blade slot; 453. Arc folding strip; 454. Wall-attached roller; 455. Docking sleeve; 456. Thick spring. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0028] Example 1, please refer to Figure 1-Figure 5 , the present invention provides a technical solution: a fan guard of a motor assembly, comprising a motor module 1, a guard device 2 is provided at the bottom end of the motor module 1;

[0029] The shield device 2 comprises a built-in insert tube 21, an isolation baffle ring 22 is arranged on the inner wall of the built-in insert tube 21, a fan blade component 4 is arranged at the axis of the built-in insert tube 21, and a mesh cover component 3 is arranged at the bottom of the built-in insert tube 21;

[0030] The mesh cover component 3 includes a bottom collar 31, the inner wall of which is clamped with a filter mesh cover 32, a wall-adhering slide plate 33 is evenly fixed on the upper surface of the bottom collar 31, a compression spring 34 is fixedly connected to the top of the inner cavity of the wall-adhering slide plate 33, and auxiliary equipment 5 is evenly arranged in the inner cavity of the bottom collar 31. The top of the wall-adhering slide plate 33 penetrates the side socket of the built-in insert tube 21, so that the bottom collar 31 can be attached to the lower surface of the built-in insert tube 21;

[0031] The auxiliary equipment 5 includes a fixed support plate 51, the lower surface of which is fixedly connected to a small air pump 55, the bottom of the exhaust port of the small air pump 55 is fixedly connected to a compression cushion tube 56, the bottom end of the compression cushion tube 56 is fixedly connected to a limiting bottom cover 57, and the upper surface of the limiting bottom cover 57 is evenly fixed with embedded plug rods. The small air pump 55 draws air through the air inlet groove on the side, and then pressurizes the compression cushion tube 56, thereby pushing the bottom sleeve 31.

[0032] The fan blade component 4 includes a rotating shaft cylinder 41, a plug-in inner disk 43 is fixedly connected to the lower part of the inner wall of the rotating shaft cylinder 41, a rotating motor 42 is fixedly connected to the axis center of the lower surface of the plug-in inner disk 43, a buffer pad 44 is fixedly connected to the axis center of the inner cavity of the plug-in inner disk 43, a blade concentration cylinder 45 is fixedly connected to the top of the buffer pad 44, and rotating fan blades 46 are evenly arranged on the upper part of the inner cavity of the blade concentration cylinder 45.

[0033] The outer surface of the compression pad tube 56 is slidably connected to the inner wall of the bottom ring 31 through a reserved opening, the upper surface of the limiting bottom cover 57 is fixedly connected to the inner cavity of the bottom ring 31 through an embedded insertion rod, the outer surface of the fixed support plate 51 is fixedly connected to the outer surface of the built-in insert tube 21, the outer surface of the wall-attached slide plate 33 passes through the inner cavity of the built-in insert tube 21 through a slot, and the bottom of the compression spring 34 and the outer surface of the built-in insert tube 21 are squeezed against each other.

[0034] The bottom end of the rotating shaft cylinder 41 is rotatably connected to the axis of the outer surface of the filter screen cover 32, the lower surface of the rotating motor 42 is fixedly connected to the outer surface of the filter screen cover 32, the outer surface of the rotating fan blade 46 is rotatably connected to the inner wall of the built-in plug-in cylinder 21, and the top of the outer surface of the built-in plug-in cylinder 21 is plugged into the inner wall of the motor module 1. A protective ring shell 52 is fixedly connected to the side of the upper surface of the fixed support plate 51 away from the built-in plug-in cylinder 21, a thrust spring 53 is fixedly connected to the inner wall of the protective ring shell 52, and a pressure-sensitive clamping plate 54 is fixedly connected to the side of the thrust spring 53 close to the built-in plug-in cylinder 21, and the bottom of the pressure-sensitive clamping plate 54 is slidably connected to the upper surface of the fixed support plate 51 through a guide slot.

[0035] The device will be installed on the motor module 1 when actually used. Figure 1 As shown, the fan blade component 4 can play a role in guiding and blowing air when rotating, absorbing the external air into the interior of the motor module 1 through the filter cover 32, and then achieving a cooling effect.

[0036] When cleaning the mesh cover part 3 of the device, the device is pulled out from the bottom of the motor module 1, and then the top of the built-in insert tube 21 is clamped, and the bottom ring 31 is completely immersed in water. Then the small air pump 55 starts to work, first punching the compression pad tube 56 to stretch the compression pad tube 56, thereby pushing the bottom ring 31 to a deeper position in the water through the limiting bottom cover 57. At this time, the wall-attached slide plate 33 will slide downward relative to the built-in insert tube 21, and then the compression spring 34 is squeezed, and then the small air pump 55 extracts the gas inside the compression pad tube 56, and under the action of the elastic potential energy of the compression spring 34 and the contraction force of the compression pad tube 56, the bottom ring 31 is quickly pulled back to the initial height, and the above actions are repeated to rinse off the dust adsorbed on the filter mesh cover 32.

[0037] After the dust cleaning is completed, the lower part of the mesh cover component 3, especially the mesh inside the filter mesh cover 32, contains a large amount of water stains. At this time, continue to clamp the top of the built-in plug-in cylinder 21, and then start the rotating motor 42 to drive the rotating shaft cylinder 41 and the plug-in inner disk 43 to rotate, so that the rotating fan blades 46 draw air through the mesh of the lower filter mesh cover 32, and at this time, the filter mesh cover 32 is also repeatedly shaken under the control of the small air pump 55, thereby quickly drying the water stains on the outer surface of the filter mesh cover 32 and the inside of the mesh.

[0038] After the bottom end of the motor module 1 is inserted into the position between the built-in insert 21 and the pressure-sensing clamp 54, the external pressure-sensing clamp 54 will slide to the side of the outer surface of the motor module 1 through the sliding groove of the fixed support plate 51 under the thrust control of the thrust spring 53, thereby clamping the outer surface of the motor module 1.

[0039] The rotating motor 42 directly controls the rotation of the plug-in inner disk 43. At this time, the inner disk part of the plug-in inner disk 43 will drive the buffer pad 44 and the top rotating cylinder 451 to rotate. The bottom end of the arc-shaped folding strip 453 will rotate relative to the rotating shaft cylinder 41 through the wall-attached roller 454 on the inner wall. Therefore, after driving the rotating fan blades 46 to rotate, the rotating fan blades 46 will drive the top rotating cylinder 451 to deflect relative to the rotating shaft cylinder 41 due to inertia, thereby ensuring the overall stability of the rotating shaft cylinder 41.

[0040] Example 2, please refer to Figure 1-Figure 7The present invention provides a technical solution: on the basis of embodiment 1, the isolation retaining ring 22 includes a segmented slide plate 221, and spherical holes are evenly arranged on the upper surface of the segmented slide plate 221, and the upper surface of the segmented slide plate 221 is rotatably connected with an embedded rotating bead 223 through the spherical rotating hole. In order to avoid serious wear problems caused by direct contact between the rotating fan blades 46 and the outer surface of the segmented slide plate 221, an embedded rotating bead 223 is arranged above the segmented slide plate 221 to reduce the wear problem. A pressure-sensitive gasket 222 is fixedly connected to the lower surface of the segmented slide plate 221, and the outer surface of the pressure-sensitive gasket 222 is fixedly connected to the inner wall of the built-in insert 21.

[0041] The blade concentration cylinder 45 comprises a top rotating cylinder 451, and the upper part of the inner cavity of the top rotating cylinder 451 is evenly provided with blade slots 452, and the inner cavity of the top rotating cylinder 451 is evenly provided with arcuate folding strips 453 through the blade slots 452, and the end of the arcuate folding strip 453 close to the top rotating cylinder 451 is fixedly connected with a thick spring 456, and the top of the thick spring 456 is fixedly connected with a docking sleeve 455. The end of the arcuate folding strip 453 close to the top rotating cylinder 451 is slidably connected to the inner cavity of the top rotating cylinder 451 through the blade slot 452, and the side of the arcuate folding strip 453 away from the top rotating cylinder 451 is rotatably connected with a wall-attaching roller 454, and the outer surface of the wall-attaching roller 454 is rollingly connected with the outer surface of the rotating shaft cylinder 41.

[0042] Through openings are evenly opened at the axis center of the bottom of the inner cavity of the top rotating cylinder 451, the top of the buffer pad 44 is fixedly connected to the axis center of the lower surface of the top rotating cylinder 451 through the through opening, and the root of the outer surface of the rotating fan blade 46 is fixedly connected to the inner cavity of the top rotating cylinder 451 through the blade slot 452.

[0043] When the rotating fan blade 46 rotates, the actual speed may be adjusted due to the output power of the rotating motor 42. Since the overall structure of the rotating fan blade 46 is slightly bent downward relative to the top drum 451, the top drum 451 of the rotating fan blade 46 will move vertically due to the constantly changing centrifugal force of the rotating fan blade 46. On the one hand, the load-bearing buffer cushion 44 will be squeezed and changed. On the other hand, the floating dust attached to the outer surface of the rotating fan blade 46 will be blown away by the gas brought out by the blade slot 452. When the top drum 451 slides vertically, it will move relative to the arc folding strip 453 through the docking sleeve 455 and the thick spring 456, thereby causing the rotating fan blade 46 to rotate while shaking in the vertical direction.

[0044] When the rotating fan blade 46 is stationary, it will be placed above the segmented slide plate 221. When the rotating fan blade 46 just starts to rotate, its lower surface will contact the outer surface of the embedded rotating bead 223, thereby driving the embedded rotating bead 223 to rotate. When the rotating fan blade 46 rotates at a faster speed, the rotating fan blade 46 and the embedded rotating bead 223 gradually tend to separate. At this time, the weight borne by the pressure-sensitive gasket 222 will decrease, thereby playing a role in speed regulation. At the same time, after the rotating fan blade 46 absorbs dust, its own weight will increase. When the rotating fan blade 46 is placed above the segmented slide plate 221 again, the pressure-sensitive gasket 222 can weigh the rotating fan blade 46 to determine whether the rotating fan blade 46 needs to be cleaned.

[0045] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A fan guard of a motor assembly, comprising a motor module (1), wherein a guard device (2) is provided at the bottom end of the motor module (1), characterized in that: The shield device (2) comprises a built-in insert cylinder (21), an inner wall of the built-in insert cylinder (21) is provided with an isolating retaining ring (22), a fan blade component (4) is provided at the axis of the built-in insert cylinder (21), and a mesh cover component (3) is provided at the bottom of the built-in insert cylinder (21); The mesh cover component (3) comprises a bottom collar (31), the inner wall of the bottom collar (31) being clamped with a filter mesh cover (32), the upper surface of the bottom collar (31) being evenly fixed with a wall-adhering slide plate (33), the top of the inner cavity of the wall-adhering slide plate (33) being fixedly connected with a compression spring (34), and the inner cavity of the bottom collar (31) being evenly provided with auxiliary equipment (5); The auxiliary equipment (5) comprises a fixed support plate (51), the lower surface of the fixed support plate (51) being fixedly connected to a small air pump (55), the bottom of the exhaust port of the small air pump (55) being fixedly connected to a compression cushion cylinder (56), the bottom end of the compression cushion cylinder (56) being fixedly connected to a limiting bottom cover (57), and the upper surface of the limiting bottom cover (57) being evenly fixed with embedded plug rods.

2. The fan guard of the motor assembly according to claim 1, characterized in that: The fan blade component (4) comprises a rotating shaft cylinder (41), a plug-in inner disk (43) is fixedly connected to the lower portion of the inner wall of the rotating shaft cylinder (41), a rotating motor (42) is fixedly connected to the axis of the lower surface of the plug-in inner disk (43), a buffer cushion (44) is fixedly connected to the axis of the inner cavity of the plug-in inner disk (43), a blade concentration cylinder (45) is fixedly connected to the top of the buffer cushion (44), and rotating fan blades (46) are evenly arranged on the upper portion of the inner cavity of the blade concentration cylinder (45).

3. The fan guard of the motor assembly according to claim 2, characterized in that: The outer surface of the compression pad tube (56) is slidably connected to the inner wall of the bottom sleeve ring (31) through a reserved opening, the upper surface of the limiting bottom cover (57) is fixedly connected to the inner cavity of the bottom sleeve ring (31) through an embedded insertion rod, the outer surface of the fixed support plate (51) is fixedly connected to the outer surface of the built-in insertion tube (21), the outer surface of the wall-adhering slide plate (33) passes through the inner cavity of the built-in insertion tube (21) through a slot, and the bottom of the compression spring (34) and the outer surface of the built-in insertion tube (21) are pressed against each other.

4. The fan guard of the motor assembly according to claim 3, characterized in that: The bottom end of the rotating shaft cylinder (41) is rotatably connected to the axis center of the outer surface of the filter screen cover (32), the lower surface of the rotating motor (42) is fixedly connected to the outer surface of the filter screen cover (32), the outer surface of the rotating fan blade (46) is rotatably connected to the inner wall of the built-in plug-in cylinder (21), and the top of the outer surface of the built-in plug-in cylinder (21) is plugged into the inner wall of the motor module (1).

5. The fan guard of the motor assembly according to claim 4, characterized in that: A protective ring shell (52) is fixedly connected to the side of the upper surface of the fixed support plate (51) away from the built-in insert tube (21), a thrust spring (53) is fixedly connected to the inner wall of the protective ring shell (52), and a pressure-sensitive clamping plate (54) is fixedly connected to the side of the thrust spring (53) close to the built-in insert tube (21), and the bottom of the pressure-sensitive clamping plate (54) is slidably connected to the upper surface of the fixed support plate (51) via a guide groove.

6. The fan guard of the motor assembly according to claim 5, characterized in that: The isolation retaining ring (22) comprises a segmented slide plate (221), the upper surface of the segmented slide plate (221) being evenly provided with spherical holes, and the upper surface of the segmented slide plate (221) being rotatably connected to an embedded rotating bead (223) via the spherical rotating hole, and the lower surface of the segmented slide plate (221) being fixedly connected to a pressure-sensitive gasket (222), and the outer surface of the pressure-sensitive gasket (222) being fixedly connected to the inner wall of the built-in insert tube (21).

7. The fan guard of the motor assembly according to claim 2, characterized in that: The blade concentration cylinder (45) comprises a top rotating cylinder (451), the upper part of the inner cavity of the top rotating cylinder (451) being evenly provided with blade slots (452), the inner cavity of the top rotating cylinder (451) being evenly provided with arc-shaped folding strips (453) through the blade slots (452), one end of the arc-shaped folding strip (453) close to the top rotating cylinder (451) being fixedly connected to a thick spring (456), and the top of the thick spring (456) being fixedly connected to a docking sleeve (455).

8. The fan guard of the motor assembly according to claim 7, characterized in that: One end of the arc-shaped folding strip (453) close to the top rotating cylinder (451) is slidably connected to the inner cavity of the top rotating cylinder (451) via a blade slot (452), and the side of the arc-shaped folding strip (453) away from the top rotating cylinder (451) is rotatably connected to a wall-attaching roller (454), and the outer surface of the wall-attaching roller (454) is rollingly connected to the outer surface of the rotating shaft cylinder (41).

9. The fan guard of the motor assembly according to claim 8, characterized in that: Through openings are evenly arranged at the axis center of the bottom of the inner cavity of the top rotating cylinder (451); the top of the buffer cushion (44) is fixedly connected to the axis center of the lower surface of the top rotating cylinder (451) through the through opening; and the root of the outer surface of the rotating blade (46) is fixedly connected to the inner cavity of the top rotating cylinder (451) through the blade slot (452).

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