Multipole brushless automotive blower assembly

Abstract

The present application relates to the technical field of air blower, in particular to a multi-pole brushless automobile air blower assembly, which comprises a shell, a motor and a fan, further comprises a cleaning assembly for cleaning the fan blade, a first electromagnet installed in a reciprocating screw rod, a first limiting assembly arranged between the bottom end of the reciprocating screw rod and the bottom plate; a force storage mechanism, which comprises a box body fixedly installed on the top wall in the shell, a clockwork arranged above the reciprocating screw rod, and a second limiting assembly arranged between the clockwork and the upper end of the reciprocating screw rod. According to the present application, a plurality of scraping frames are arranged above the fan blade, and the clockwork is charged by the force storage mechanism during the operation of the air blower. After the air blower stops running, the energy stored in the clockwork is released to drive the reciprocating screw rod to rotate, and the cleaning frame is driven to reciprocate by screw transmission to clean the fan blade of the air blower, thereby replacing the disassembly and cleaning of the air blower, prolonging the service life of the air blower, and ensuring the stable ventilation volume and quality for a long time.

Description

Technical Field

[0001] This invention relates to the field of blower technology, specifically to a multi-stage brushless automotive blower assembly. Background Technology

[0002] A blower is an electromechanical product that uses a brushless DC motor to drive the fan blades mounted on the shaft to rotate, drawing in air through the air inlet duct of the blower housing and creating directional airflow. Because brushless DC blowers possess a series of advantages such as simple structure, reliable operation, and convenient maintenance of AC blowers, they are widely used in ventilation and heat dissipation in electronic equipment. Existing automotive blowers generally use brushless blowers (to reduce weight and space occupation), and existing automotive blowers have multiple speed settings to more flexibly meet customer needs.

[0003] After prolonged use, especially due to static electricity and other reasons, existing blowers accumulate a lot of dust on their blades. As the number of uses and the time spent on the blowers increase, this not only reduces ventilation but also lowers air quality. The accumulated dust also affects the normal operation of the blower and causes abnormal noises. Existing blowers lack self-cleaning mechanisms and are only disassembled and cleaned when blockages occur. At this time, the dust mixed with oil on the blower blades is very sticky and difficult to clean. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a multi-stage brushless automotive blower assembly, which can effectively solve the problem of excessive internal dust that is difficult to clean after long-term use of existing blowers.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a multi-stage brushless automotive blower assembly, including a housing, a motor, and a fan. The fan includes a base plate and multiple fan blades mounted on the base plate. It also includes a cleaning assembly installed inside the housing for cleaning the fan blades, comprising a cleaning frame slidably mounted on the fan blades, with multiple scrapers fixedly mounted on the cleaning frame, each scraper corresponding to a fan blade. A reciprocating lead screw is rotatably mounted in the housing, and the cleaning frame has threaded holes that engage with the reciprocating lead screw. A first electromagnet is installed in the reciprocating lead screw. A first limiting component is provided between the bottom end of the reciprocating lead screw and the base plate, which is used to drive the reciprocating lead screw to rotate when the motor is powered on; a power storage mechanism is installed above the reciprocating lead screw, which is used to drive the reciprocating lead screw to rotate when the motor is powered off. The power storage mechanism includes a housing fixedly installed on the top wall of the housing, and the reciprocating lead screw rotates through the bottom wall of the housing. A mainspring is provided above the reciprocating lead screw, and a second limiting component is provided at the upper end of the mainspring and the reciprocating lead screw. The second limiting component is used for connecting and disconnecting the mainspring and the reciprocating lead screw.

[0007] Furthermore, the first limiting component includes a first magnet slidably mounted in the reciprocating lead screw, the first magnet being located below the first electromagnet and repelling the first magnet when the first electromagnet is energized. The first limiting component also includes a first limiting tube fixedly mounted on the bottom wall of the base plate, and a first limiting block matching the first limiting tube is connected below the first magnet.

[0008] Furthermore, a second piston tube is fixedly installed in the first limiting tube, a second piston rod is movably inserted into the upper end of the second piston tube, a pressure plate is fixedly installed at the upper end of the second piston rod, and a return spring is movably sleeved on the second piston rod. A sliding hole is opened on the cleaning frame, and the sliding hole is annular. Two telescopic rods are symmetrically installed on the bottom wall of the box, and the bottom end of the telescopic rod movably passes through the sliding hole. A first piston tube is fixedly installed at the bottom end of the telescopic rod. A first piston rod is movably inserted into one end of the first piston tube. A locking block is fixedly installed at the end of the first piston rod away from the first piston tube. An annular plate is fixedly installed on the bottom wall of the cleaning frame. Multiple locking holes matching the locking blocks are opened at equal intervals on the annular plate. A first connecting tube connects the first piston tube and the second piston tube.

[0009] Furthermore, the second limiting component includes a rotating shaft fixedly installed at the center end of the mainspring, a second limiting tube fixedly installed at the bottom end of the rotating shaft, a second magnet slidably installed at the upper end of the reciprocating screw, and a second limiting block matching the second limiting tube elastically installed on the side of the second magnet away from the first electromagnet.

[0010] Furthermore, the second limiting assembly also includes a piston disc slidably installed in the second limiting tube, and a separation rod is provided at the bottom of the piston disc, and a third limiting block for engaging the reciprocating screw is provided at the end of the separation rod. A third piston tube is fixedly installed on the side wall of the housing, and a third piston rod is movably inserted into the third piston tube, and the end of the third piston rod away from the third piston tube is slidably connected to the spring. A second connecting tube connects the third piston tube and the second limiting tube.

[0011] Furthermore, the energy storage component also includes a one-way component, which includes a fixed tube fixedly installed in the housing, a second electromagnet fixedly installed in the fixed tube, a third magnet movably installed in the fixed tube, a limit plate elastically installed on the side of the third magnet away from the second electromagnet, a gear connected to the spring, and the limit plate used to limit the one-way rotation of the gear.

[0012] Furthermore, the base plate has multiple recycling ports, the housing is equipped with a collection box, and the collection box is connected to each recycling port. A baffle is rotatably installed at each recycling port, and a collection box is provided below the housing.

[0013] Furthermore, two rotating rods are symmetrically installed on both sides of the baffle. The two rotating rods are rotatably installed on the inner wall of the recycling port, and a coil spring is sleeved on the rotating rod.

[0014] The technical solution provided by this invention has the following advantages compared with known public technologies:

[0015] This solution features multiple scrapers above the fan blades. During blower operation, a power storage mechanism winds the mainspring. After the blower stops, the stored energy is released, driving a reciprocating screw to rotate. This screw drive then moves the cleaning frame back and forth to clean the blower blades. This replaces disassembling the blower for cleaning, extending its service life and ensuring stable ventilation volume and quality over a long period. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a partial cross-sectional view of the present invention;

[0018] Figure 2 This is a partial bottom view of the present invention;

[0019] Figure 3 This is a schematic diagram of the fan structure in this invention;

[0020] Figure 4 This is a schematic diagram of the structure between the cleaning frame and the energy storage component in this invention;

[0021] Figure 5 for Figure 4 Enlarged view of the structure of part A in the middle;

[0022] Figure 6 This is a structural schematic diagram of the cleaning frame in this invention from a bottom-up perspective;

[0023] Figure 7 This is an exploded view of the cleaning frame and the energy storage assembly in this invention;

[0024] Figure 8 This is a cross-sectional view of the reciprocating lead screw and the power storage assembly in this invention;

[0025] Figure 9 for Figure 8 Enlarged view of the structure of section B;

[0026] Figure 10 for Figure 8 Enlarged view of the structure of section C;

[0027] Figure 11 for Figure 8 Enlarged view of the structure of section D in the middle;

[0028] Figure 12 for Figure 8 Enlarged view of the structure of section E in the middle;

[0029] Figure 13 for Figure 8 Enlarged view of the structure of section F in the middle;

[0030] Figure 14 for Figure 8 Enlarged view of the structure of part F in the middle section.

[0031] The labels in the diagram represent: 1. Housing; 2. Motor; 3. Fan; 301. Base plate; 302. Fan blade; 4. Cleaning frame; 5. Scraper frame; 6. Slide groove; 7. Reciprocating lead screw; 8. Threaded hole; 9. Sliding hole; 10. Telescopic rod; 11. First piston tube; 12. Spring; 13. Gear; 14. First limit tube; 15. Second piston tube; 16. Second piston rod; 17. Pressure plate; 18. First electromagnet; 19. First magnet; 20. First limit. 21. First connecting pipe; 22. First piston rod; 23. Locking block; 24. Annular plate; 25. Second magnet; 26. Second limiting block; 27. Second limiting pipe; 28. Separating rod; 29. ​​Second connecting pipe; 30. Third piston pipe; 31. Third piston rod; 32. Fixing pipe; 33. Second electromagnet; 34. Third magnet; 35. Limiting plate; 36. Box body; 37. Recycling port; 38. Third limiting block; 39. Baffle; 40. Collection box. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] The present invention will be further described below with reference to embodiments.

[0034] Example: A multi-stage brushless automotive blower assembly includes a housing 1, a motor 2, and a fan 3. The fan 3 includes a base plate 301 and multiple fan blades 302 mounted on the base plate 301. After prolonged use, especially due to static electricity, a lot of dust accumulates on the fan blades 302. With repeated use and extended usage time, this dust accumulation not only reduces ventilation but also lowers air quality. The accumulated dust also affects the blower's normal operation and causes abnormal noise. Existing blowers lack self-cleaning mechanisms; cleaning is only performed when the blower becomes clogged. At this time, the dust mixed with oil on the fan blades 302 is highly viscous and difficult to clean. To address these issues, this solution adds a cleaning component to the blower and cleans the fan blades 302 each time the blower stops operating, without affecting normal operation. The specific solution is as follows:

[0035] refer to Figures 1-14To achieve automatic cleaning of the fan blades 302, this solution installs a cleaning assembly inside the housing 1 for cleaning the fan blades 302. This assembly includes a cleaning frame 4 that slides on the fan blades 302. Multiple scrapers 5 are fixedly installed on the cleaning frame 4, and each scraper 5 corresponds one-to-one with a fan blade 302. The cleaning frame 4 has the same number of grooves 6 as the fan blades 302. The bottom of each fan blade 302 is fixedly installed on the base plate 301, while its sides are slidably installed in the corresponding grooves 6. Thus, when the fan blades 302 rotate, the cleaning frame 4 also rotates, achieving automatic cleaning of each blade. Each fan blade 302 corresponds one-to-one with the scraper 5. A reciprocating screw 7 is rotatably installed in the housing 1, and a threaded hole 8 is provided on the cleaning frame 4 to engage with the reciprocating screw 7. Multiple collection ports 37 are provided on the bottom plate 301. A collection box is installed on the housing 1, and the collection box is connected to each collection port 37. A baffle 39 is rotatably installed at the collection port 37, and a collection box 40 is provided below the housing 1. Two rotating rods are symmetrically installed on both sides of the baffle 39. The two rotating rods are rotatably installed on the inner wall of the collection port 37, and a coil spring is sleeved on the rotating rod.

[0036] The above-mentioned scraper 5 is as follows Figure 5 Each of the components consists of two arc-shaped plates, which are driven by a reciprocating screw 7 and a threaded hole 8 on the cleaning frame 4. This causes the cleaning frame 4 to drive the scraper 5 to move up and down reciprocally. The two arc-shaped plates clean both sides of each fan blade 302, removing dust. When the scraper 5 moves to its lowest point, its outer wall presses against the baffle 39 on the base plate 301, pushing the baffle 39 open and allowing dust to enter the collection port 37. When the scraper 5 moves up, the baffle 39 returns to its original position under the action of a coil spring, blocking the collection port 37. At this time, there is no airflow inside, and dust will not fly out of the collection port 37, achieving centralized collection of dust, preventing dust residue in the working space from causing secondary pollution, and improving the cleaning effect.

[0037] refer to Figures 1-14This solution also includes a first electromagnet 18 installed in the reciprocating screw 7. A first limiting assembly is provided between the bottom end of the reciprocating screw 7 and the base plate 301 for driving the reciprocating screw 7 to rotate when the motor 2 is energized. The first limiting assembly includes a first magnet 19 slidably installed in the reciprocating screw 7. The first magnet 19 is located below the first electromagnet 18 and repels the first magnet 19 when the first electromagnet 18 is energized. The first limiting assembly also includes a first limiting tube 14 fixedly installed on the bottom wall of the base plate 301. A first limiting block 20 matching the first limiting tube 14 is connected below the first magnet 19. A second piston tube 15 is fixedly installed in the first limiting tube 14. A second piston rod (16) is movably inserted into the upper end of the second piston tube 15. The upper end of the second piston rod 16 is fixedly installed with a pressure plate 17, and a return spring is movably sleeved on the second piston rod 16. The cleaning frame 4 has a sliding hole 9, which is annular. Two telescopic rods 10 are symmetrically installed on the bottom wall of the box 36, and the bottom end of the telescopic rod 10 moves through the sliding hole 9. The bottom end of the telescopic rod 10 is fixedly installed with a first piston tube 11. One end of the first piston tube 11 is movably inserted with a first piston rod 22. The end of the first piston rod 22 away from the first piston tube 11 is fixedly installed with a locking block 23. The bottom wall of the cleaning frame 4 is fixedly installed with an annular plate 24. Multiple locking holes matching the locking block 23 are opened at equal intervals on the annular plate 24. A first connecting pipe 21 connects the first piston tube 11 and the second piston tube 15.

[0038] When the motor 2 is energized, the first electromagnet 18 is also energized, which causes the first electromagnet 18 to generate magnetic force. Through the action of repulsion, the first magnet 19 is pushed outward of the reciprocating screw 7. The first magnet 19 drives the first limiting block 20 to move down and get into the first limiting tube 14, so that the base plate 301 rotates with the motor 2 and drives the reciprocating screw 7 to rotate. (It is worth noting that the first magnet 19 is installed in the reciprocating screw 7 by means of a slider and a groove, so the first limiting tube 14 drives the first limiting block 20 to rotate, the first limiting block 20 drives the first magnet 19 to rotate, and the first magnet 19 drives the reciprocating screw 7 to rotate.)

[0039] During the above process (the first limiting block 20 is engaged with the first limiting tube 14), the first limiting block 20 will also press the pressure plate 17. The pressure plate 17 will drive the second piston rod 16 to move down, which will increase the space in the upper part of the second piston tube 15 (the internal air pressure will decrease). This will allow air to be drawn from the two first piston tubes 11 through the first connecting pipe 21, causing the two first piston rods 22 to move into the first piston tube 11. This will drive the two locking blocks 23 away from the annular plate 24. At this time, the locking blocks 23 are separated from the locking holes. In this state, the telescopic rod 10 can slide freely in the sliding hole 9, that is, the cleaning frame 4 can rotate relative to the box 36. The cleaning frame 4 rotates under the push of the fan blade 302. Its rotation speed is the same as that of the bottom plate 301. The rotation speed of the reciprocating screw 7 is also the same as that of the bottom plate 301. Therefore, the reciprocating screw 7 and the cleaning frame 4 rotate synchronously and in the same direction. The two will not generate threaded transmission, that is, cleaning will not be performed when the blower is working normally.

[0040] When the motor 2 is de-energized, the first electromagnet 18 loses its magnetic force, and the first magnet 19 moves towards the first electromagnet 18 (upward) using the attraction force, causing the first limiting block 20 to leave the first limiting tube 14. The pressure plate 17 loses the pressure of the first limiting block 20, and the second piston rod 16 gradually returns to its original position under the elastic force of the return spring. The space in the upper half of the second piston tube 15 decreases (the air pressure increases), and the internal air enters the two first piston tubes 11 through the first connecting pipe 21, thereby pushing the first piston rod 22 out of the first piston tube 11. The first piston rod 22 drives the locking block 23 to approach the annular plate 24 and locks it in the locking hole (for easy and quick locking, the end of the locking block 23 can be set as a hemispherical shape). In this state, the telescopic rod 10 is locked in the locking hole by the locking block 23, and the box 36 is in a fixed state, so the cleaning frame 4 cannot rotate. However, it can move up and down through the telescopic rod 10. That is, after the blower stops working, the cleaning frame 4 can move up and down for cleaning. The specific implementation process is through the lower power storage mechanism.

[0041] refer to Figures 1-13A power storage mechanism is installed above the reciprocating screw 7 to drive the reciprocating screw 7 to rotate when the motor 2 is de-energized. The power storage mechanism includes a housing 36 fixedly installed on the top wall of the housing 1, and the reciprocating screw 7 rotatably passes through the bottom wall of the housing 36. A spring 12 is provided above the reciprocating screw 7. A second limiting assembly is provided at the upper end of the spring 12 and the reciprocating screw 7. The second limiting assembly is used for connecting and disconnecting the spring 12 and the reciprocating screw 7. The second limiting assembly includes a rotating shaft fixedly installed at the center end of the spring 12. A second limiting tube 27 is fixedly installed at the bottom end of the rotating shaft. A second magnet 25 is slidably installed at the upper end of the reciprocating screw 7. A second limiting block 26 matching the second limiting tube 27 is elastically installed on the side of the second magnet 25 away from the first electromagnet 18. The second limiting assembly also includes a piston disc slidably installed in the second limiting tube 27. The piston disc has a separation rod 28 at the bottom and a third limiting block 38 at the end of the separation rod 28 for engaging the reciprocating screw 7. A third piston tube 30 is fixedly installed on the side wall of the housing 36. A third piston rod 31 is movably inserted into the third piston tube 30 and is slidably connected to the spring 12 at the end of the third piston rod 31 away from the third piston tube 30. A second connecting pipe 29 is connected between the third piston tube 30 and the second limiting pipe 27. The power storage assembly also includes a one-way assembly. The one-way assembly includes a fixed pipe 32 fixedly installed in the housing 36. A second electromagnet 33 is fixedly installed in the fixed pipe 32. A third magnet 34 is movably installed in the fixed pipe 32. A limiting plate 35 is elastically installed on the side of the third magnet 34 away from the second electromagnet 33. A gear 13 is connected to the spring 12. The limiting plate 35 is used to limit the one-way rotation of the gear 13.

[0042] When motor 2 passes by, the first electromagnet 18 is energized to generate magnetic force, which pushes the second magnet 25 upward through repulsion, and the second limiting block 26 is locked into the second limiting tube 27. Through the limiting effect between the second limiting block 26 and the second limiting tube 27, the reciprocating screw 7 can drive the second limiting tube 27 to rotate. The second limiting tube 27 drives the upper spring 12 and gear 13 to rotate (it is worth noting that the second limiting tube 27 is a piston tube, and its port is provided with a slot that matches the second limiting block 26). As the mainspring 12 continues to rotate and wind, it gradually contracts, and its outer ring gradually approaches the center position of the mainspring 12. This causes the third piston rod 31 to be pulled, forcing the air in the third piston tube 30 into the second limiting tube 27 through the second connecting tube 29. This causes the piston disc in the second limiting tube 27 to move downward, driving the separating rod 28 to push the second limiting block 26 out of the second limiting tube 27. In this state, the reciprocating screw 7 and the second limiting tube 27 lose their limiting function, and the second limiting tube 27 can no longer follow the reciprocating screw 7 to continue rotating. That is, the mainspring 12 stops winding (winding is complete).

[0043] When the motor 2 is de-energized (the blower stops working), the first electromagnet 18 loses its magnetic force, the second magnet 25 moves downward, and both the second limit block 26 and the third limit block 38 move downward. The third limit block 38 locks the reciprocating screw 7. At this time, the spring 12 springs back, driving the second limit tube 27 to rotate. The second limit tube 27 drives the reciprocating screw 7 to rotate. According to the above situation, the cleaning frame 4 cannot rotate but can only move up and down. Thus, the up and down movement of the cleaning frame 4 is completed by the threaded transmission between the reciprocating screw 7 and the threaded hole 8 on the cleaning frame 4. During this process, the spring 12 gradually loosens, the third piston rod 31 gradually resets, the air in the second limit tube 27 is sucked away by the third piston tube 30, and the third limit block 38 gradually moves upward, gradually losing its limiting effect with the reciprocating screw 7. During this process, the scraper 5 moves up and down, completing the cleaning process.

[0044] It is worth noting that in order to ensure that the mainspring 12 rotates in one direction (maintains a tightened state) when the motor 2 is working, a one-way component is set up. That is, when the motor 2 is energized, the second electromagnet 33 in the fixed tube 32 is also energized. The repulsive force between the second electromagnet 33 and the third magnet 34 pushes the limiting plate 35 out of the fixed tube 32. The limiting plate 35 is a wedge-shaped block. When the teeth on the gear 13 press against the inclined surface on the limiting plate 35, they will squeeze it into the fixed tube 32. When the teeth on the gear 13 press against the right angle surface on the limiting plate 35, they will be blocked, thus achieving one-way rotation and ensuring that the mainspring 12 will not rotate back after it is fully wound when the motor 2 is energized.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-pole brushless automobile blower assembly, comprising a housing (1), a motor (2) and a fan (3), the fan (3) comprising a bottom plate (301) and a plurality of fan blades (302) mounted on the bottom plate (301), characterized in that, Also includes: The cleaning assembly is installed inside the housing (1) and is used to clean the fan blades (302). It includes a cleaning frame (4) that is slidably mounted on the fan blades (302). Multiple scrapers (5) are fixedly mounted on the cleaning frame (4), and the scrapers (5) correspond one-to-one with the fan blades (302). A reciprocating screw (7) is rotatably mounted in the housing (1), and the cleaning frame (4) is provided with a threaded hole (8) that is threaded to the reciprocating screw (7). The first electromagnet (18) is installed in the reciprocating screw (7), and a first limiting component is provided between the bottom end of the reciprocating screw (7) and the base plate (301) for driving the reciprocating screw (7) to rotate when the motor (2) is energized; A power storage mechanism is installed above the reciprocating screw (7) to drive the reciprocating screw (7) to rotate when the motor (2) is de-energized. The power storage mechanism includes a box (36) fixedly installed on the top wall of the housing (1), and the reciprocating screw (7) rotates through the bottom wall of the box (36). A spring (12) is provided above the reciprocating screw (7). A second limiting component is provided at the upper end of the spring (12) and the reciprocating screw (7). The second limiting component is used for connecting and disconnecting the spring (12) and the reciprocating screw (7). The second limiting component includes a rotating shaft fixedly installed at the center end of the mainspring (12), a second limiting tube (27) fixedly installed at the bottom end of the rotating shaft, a second magnet (25) slidably installed at the upper end of the reciprocating screw (7), and a second limiting block (26) matching the second limiting tube (27) elastically installed on the side of the second magnet (25) away from the first electromagnet (18). The second limiting assembly also includes a piston disc slidably installed in the second limiting tube (27), and a separation rod (28) is provided at the bottom of the piston disc, and a third limiting block (38) for engaging the reciprocating screw (7) is provided at the end of the separation rod (28). A third piston tube (30) is fixedly installed on the side wall of the housing (36), and a third piston rod (31) is movably inserted into the third piston tube (30), and the end of the third piston rod (31) away from the third piston tube (30) is slidably connected to the spring (12). A second connecting tube (29) is connected between the third piston tube (30) and the second limiting tube (27).

2. The multipole brushless automotive blower assembly of claim 1, wherein, The first limiting component includes a first magnet (19) slidably mounted in the reciprocating lead screw (7). The first magnet (19) is located below the first electromagnet (18) and repels the first magnet (19) when the first electromagnet (18) is energized. The first limiting component also includes a first limiting tube (14) fixedly mounted on the bottom wall of the base plate (301). A first limiting block (20) matching the first limiting tube (14) is connected below the first magnet (19).

3. The multipole brushless automotive blower assembly of claim 2, wherein, A second piston tube (15) is fixedly installed in the first limiting tube (14). A second piston rod (16) is movably inserted into the upper end of the second piston tube (15). A pressure plate (17) is fixedly installed at the upper end of the second piston rod (16), and a return spring is movably sleeved on the second piston rod (16). A sliding hole (9) is opened on the cleaning frame (4), and the sliding hole (9) is annular. Two telescopic rods (10) are symmetrically installed on the bottom wall of the box (36), and the bottom end of the telescopic rod (10) movably passes through the sliding hole (9). The bottom end of the retractor (10) is fixedly installed with a first piston tube (11), and a first piston rod (22) is movably inserted into one end of the first piston tube (11). A locking block (23) is fixedly installed at the end of the first piston rod (22) away from the first piston tube (11). An annular plate (24) is fixedly installed on the bottom wall of the cleaning frame (4). Multiple locking holes matching the locking block (23) are opened at equal intervals on the annular plate (24). A first connecting pipe (21) is connected between the first piston tube (11) and the second piston tube (15).

4. The multipole brushless automotive blower assembly of claim 1, wherein, The energy storage mechanism also includes a one-way component, which includes a fixed tube (32) fixedly installed in the housing (36), a second electromagnet (33) fixedly installed in the fixed tube (32), a third magnet (34) movably installed in the fixed tube (32), a limiting plate (35) elastically installed on the side of the third magnet (34) away from the second electromagnet (33), a gear (13) connected to the spring (12), and the limiting plate (35) used to limit the one-way rotation of the gear (13).

5. The multipole brushless automotive blower assembly of claim 1, wherein, The base plate (301) has multiple recycling ports (37), the housing (1) is equipped with a collection box, and the collection box is connected to each recycling port (37). A baffle (39) is rotatably installed at each recycling port (37), and a collection box (40) is provided below the housing (1).

6. The multipole brushless automotive blower assembly of claim 5, wherein, Two rotating rods are symmetrically installed on both sides of the baffle (39). The two rotating rods are respectively rotatably installed on the inner wall of the recycling port (37), and a coil spring is sleeved on the rotating rod.

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