Brushless motor PCB driving module fixing structure

Abstract

The invention discloses a brushless motor PCB driving module fixing structure, and relates to the technical field of PCB driving modules. The brushless motor PCB driving module fixing structure comprises a mounting plate and a PCB driving module body, the mounting plate is provided with a plurality of threaded holes arranged in an array mode, the PCB driving module body comprises a shell and a PCB, the side wall of the shell is rotationally connected with a plurality of symmetrically-arranged rectangular pipes through a rotating mechanism, and the side wall of the shell is fixedly connected with the PCB. And a moving plate is connected into the rectangular pipe through a first reset mechanism, a first bolt is inserted into the top of the moving plate, and the first bolt and the threaded hole are fixed in a threaded mode. According to the brushless motor PCB driving module fixing structure, the position of the first bolt can be conveniently adjusted, the PCB driving module body is more convenient and faster to install and fix, the applicability is higher, meanwhile, the buffer protection effect can be achieved, the interior of the shell can be well cooled, and the service life of the shell is prolonged. Therefore, the use effect and the service life of the PCB driving module body are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of PCB drive modules, and in particular to a brushless motor PCB drive module fixing structure. Background Art

[0002] The brushless motor PCB drive module is an electronic component used to drive a brushless motor. A brushless motor is a motor that uses an electronic commutator instead of traditional mechanical brushes to control current commutation. It has the advantages of high efficiency, energy saving, small size, and long life. It is widely used in various power tools, home appliances, industrial control and other fields. The brushless motor PCB drive module is mainly composed of components such as the housing, PCB board, driver chip, MOS tube, rectifier bridge, etc.

[0003] However, most of the existing brushless motor PCB drive modules are fixed on the mounting plate by bolts. Since the threaded holes on different mounting plates have different spacings and the threaded holes may also be offset when opening, the PCB drive module is not convenient and quick enough to be fixed, and has poor applicability. At the same time, after the PCB drive module is installed and fixed, it is easily affected by vibration, and the internal heat dissipation effect is poor, which affects its use effect and lifespan. Summary of the invention

[0004] The object of the present invention is to provide a brushless motor PCB drive module fixing structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a brushless motor PCB drive module fixing structure, comprising a mounting plate and a PCB drive module body, the mounting plate is provided with a plurality of threaded holes arranged in an array, and the PCB drive module body comprises a shell and a PCB board, the side wall of the shell is rotatably connected with a plurality of symmetrically arranged rectangular tubes through a rotating mechanism, and a moving plate is connected inside the rectangular tube through a first reset mechanism, a first bolt is inserted into the top of the moving plate, and the first bolt is threadedly fixed with the threaded hole, the bottom of the shell is fixedly connected with a plurality of symmetrically arranged threaded seats, and the PCB board is provided with a plurality of threaded holes arranged in an array, and the PCB drive module body comprises a shell and a PCB board, the side wall of the shell is rotatably connected with a plurality of symmetrically arranged rectangular tubes through a rotating mechanism, and a moving plate is connected inside the rectangular tube through a first reset mechanism, a first bolt is inserted into the top of the moving plate, and the first bolt is threadedly fixed with the threaded hole, a plurality of symmetrically arranged threaded seats are fixedly connected with the bottom of the shell, and the PCB board is provided with a plurality of threaded holes arranged in an array ... The CB board is threadedly fixed to the threaded seat by a second bolt, the inner side wall of the shell is fixedly connected with a rubber cover, and the rubber cover is fixedly sleeved on the side wall of the threaded seat, the PCB board is arranged in the rubber cover, and a liquid storage cavity is formed between the rubber cover and the shell, a plurality of hollow heat dissipation covers are fixedly inserted into the side wall of the shell, a liquid supply mechanism for supplying liquid to the liquid storage cavity is arranged on the outer side wall of the shell, and a plurality of support rods arranged in an array are fixedly connected to the bottom of the shell, a first ball is arranged at the bottom of the support rod, and a stirring mechanism for stirring the coolant in the liquid storage cavity is arranged at the bottom of the shell.

[0006] Preferably, the rotating mechanism comprises a first connecting block fixedly connected to the side wall of each rectangular tube, and the side wall of each first connecting block is rotatably connected to a second connecting block via a rotating pin, and the second connecting block is fixed to the side wall of the shell.

[0007] Preferably, the first reset mechanism includes two symmetrically arranged first sleeves fixedly connected to the inner wall of the rectangular tube, and a first sleeve rod is inserted into the first sleeve, the other end of the first sleeve rod is fixed to the side wall of the movable plate, and the side wall of the first sleeve is sleeved with a first spring.

[0008] Preferably, the liquid supply mechanism includes a liquid storage box fixedly connected to the side wall of the shell, and a piston is connected to the liquid storage box through a second reset mechanism, a liquid supply hole is provided between the liquid storage box and the liquid storage cavity, and the movement of the piston is driven by a first pushing mechanism.

[0009] Preferably, the second reset mechanism includes two symmetrically arranged second sleeves fixedly connected to the top of the liquid storage tank, and a second sleeve rod is inserted into the second sleeve, the lower end of the second sleeve rod is fixed to the top of the piston, and the side wall of the second sleeve is sleeved with a second spring.

[0010] Preferably, the first pushing mechanism comprises a pushing rod fixedly connected to the bottom of the piston, and a second ball is arranged at the lower end of the pushing rod.

[0011] Preferably, the stirring mechanism includes a fan disposed in the liquid storage chamber, and the fan is rotatably connected to the bottom of the shell through a first rotating shaft, and the rotation of the first rotating shaft is driven by a driving mechanism.

[0012] Preferably, the driving mechanism includes a driven pulley fixedly mounted on the side wall of the first rotating shaft, and the bottom of the shell is fixedly connected to an L-shaped support plate, the bottom of the support plate is rotatably connected to a driving pulley via a second rotating shaft, and the driving pulley and the driven pulley are transmitted by pulleys, and the rotation of the second rotating shaft is driven by a second driving mechanism.

[0013] Preferably, the second pushing mechanism includes a plurality of hemispherical grooves provided on the side wall of the second ball bearing, and the side wall fixed sleeve of the second rotating shaft is provided with a gear, the bottom of the support plate is fixedly connected with an L-shaped connecting plate, and the bottom of the connecting plate is connected with a rack through a third reset mechanism, the rack is meshed with the gear, the side wall of the rack is fixedly connected with a moving rod, and the other end of the moving rod is inserted in the groove.

[0014] Preferably, the third reset mechanism includes two symmetrically arranged fixed blocks fixedly connected to the bottom of the connecting plate, and the side walls of the fixed blocks are fixedly connected to two symmetrically arranged guide rods, the side walls of each guide rod are sleeved with a slider, and the slider is fixed to the side wall of the rack, and the side walls of each guide rod are sleeved with a third spring.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This brushless motor PCB drive module fixing structure, by setting a first reset mechanism, etc., when it is necessary to install and fix the PCB drive module body, it can be adjusted according to the position of the threaded hole, and the rectangular tube and the movable plate can be rotated and adjusted by the rotating mechanism. At the same time, the movable plate can be telescopically adjusted along the rectangular tube, so as to adjust the position of the first bolt to ensure that the first bolt can be aligned with the threaded hole. It is not only suitable for the installation and fixation of threaded holes in different positions, but also can be installed and fixed when the position of the threaded hole is offset, so that the installation and fixation is more convenient and quick, and the applicability is stronger. After installation and fixation, when vibration occurs, the first spring can be deformed, which can play a buffering and protective effect, and prevent its internal components from loosening or even being damaged due to severe vibration.

[0016] The brushless motor PCB drive module fixing structure is provided with a liquid supply mechanism, etc., so that when the second ball is against the top of the mounting plate during installation and fixing, the piston is pushed to move upward, and at the same time, the second spring is compressed, thereby squeezing the coolant in the liquid storage tank, and the coolant is filled into the liquid storage cavity through the liquid supply hole, so that the rubber cover expands to wrap the PCB board, and at the same time, the heat is dissipated outwardly through the heat dissipation cover, which can not only provide a good wrapping and protection effect on the PCB board, but also provide a good heat dissipation and cooling effect on the PCB board, thereby ensuring the use effect and life of the PCB drive module body.

[0017] The brushless motor PCB drive module fixing structure is provided with a stirring mechanism, etc., so that after the PCB drive module body is installed and fixed, when vibration occurs, under the action of the first spring, the PCB drive module body can move, and the movement of the PCB drive module body drives the movement of the push rod. At the same time, the second ball rolls on the top of the mounting plate, and when the end of the moving rod slides out of the groove, the moving rod and the rack are pushed to move. At the same time, the third spring is deformed, and when the end of the moving rod slides into the groove again, the moving rod and the rack can move and reset under the action of the third spring, so that the rack can reciprocate on the side wall of the guide rod and drive the gear to reciprocate. The rotation of the gear drives the rotation of the second rotating shaft and the driving pulley, and drives the driven pulley and the first rotating shaft to rotate through the pulley, thereby driving the fan to rotate, so that the coolant in the liquid storage chamber can be stirred, so that the cooling and heat dissipation efficiency is higher and the effect is better, thereby ensuring the use effect and life of the PCB drive module body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional structural diagram of the liquid storage tank in the present invention; Figure 3 It is a schematic diagram of the position of the first pushing mechanism in the present invention; Figure 4 It is a partial cross-sectional structural schematic diagram of the housing in the present invention; Figure 5 It is a structural schematic diagram of the stirring mechanism in the present invention; Figure 6 for Figure 2 A schematic diagram of the enlarged structure at A in the middle; Figure 7 for Figure 3 A schematic diagram of the enlarged structure at B in the middle; Figure 8 for Figure 7 Schematic diagram of the enlarged structure at C in the middle; Fig. 9 for Figure 8 Schematic diagram of the enlarged structure at D in the middle.

[0019] In the figure: 1, mounting plate; 101, threaded hole; 2, rotating mechanism; 201, second connecting block; 202, rotating pin; 203, first connecting block; 3, first reset mechanism; 301, first sleeve; 302, first set of rods; 303, first spring; 4, liquid supply mechanism; 401, liquid storage tank; 402, liquid supply hole; 403, piston; 5, second reset mechanism; 501, second sleeve; 502, second set of rods; 503, second spring; 6, first pushing mechanism; 601, pushing rod; 602, second ball; 7, stirring mechanism; 701, first rotating shaft; 702, fan; 8, driving mechanism; 801, support plate; 802, second rotating shaft Axle; 803, driving pulley; 804, driven pulley; 805, pulley; 9, second pushing mechanism; 901, groove; 902, gear; 903, connecting plate; 904, rack; 905, moving rod; 10, third reset mechanism; 1001, fixed block; 1002, guide rod; 1003, slider; 1004, third spring; 11, PCB drive module body; 1101, shell; 1102, PCB board; 12, threaded seat; 13, second bolt; 14, heat dissipation cover; 15, rubber cover; 16, support rod; 17, first ball; 18, rectangular tube; 19, moving plate; 20, first bolt; 21, liquid storage chamber. Implementation

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 9The present invention provides a technical solution: a brushless motor PCB drive module fixing structure, comprising a mounting plate 1 and a PCB drive module body 11, the mounting plate 1 is provided with a plurality of array-arranged threaded holes 101, and the PCB drive module body 11 comprises a shell 1101 and a PCB board 1102, the side wall of the shell 1101 is rotatably connected with a plurality of symmetrically arranged rectangular tubes 18 through a rotating mechanism 2, and a moving plate 19 is connected in the rectangular tube 18 through a first reset mechanism 3, a first bolt 20 is inserted into the top of the moving plate 19, and the first bolt 20 is threadedly fixed with the threaded hole 101, the bottom of the shell 1101 is fixedly connected with a plurality of symmetrically arranged threaded seats 12, and the PCB board 1102 is threadedly fixed with the threaded seat 12 through a second bolt 13, the inner side wall of the shell 1101 is fixedly connected with a rubber cover 15, and the rubber cover 15 is fixedly sleeved on the side wall of the threaded seat 12, the PCB board 1102 is arranged in the rubber cover 15, and a liquid storage chamber 21 is formed between the rubber cover 15 and the shell 1101, and the shell 1 A plurality of hollow heat dissipation covers 14 are fixedly inserted into the side wall of the shell 101, a liquid supply mechanism 4 for supplying liquid to the liquid storage chamber 21 is provided on the outer wall of the shell 1101, and a plurality of support rods 16 arranged in an array are fixedly connected to the bottom of the shell 1101, and a first ball 17 is provided at the bottom of the support rod 16. The function of the support rod 16 and the first ball 17 is to ensure that there is a certain distance between the PCB drive module body 11 and the mounting plate 1 after the PCB drive module body 11 is installed and fixed, so as to facilitate heat dissipation, and when the PCB drive module body 11 shakes, the first ball 17 can also roll, and a stirring mechanism 7 for stirring the coolant in the liquid storage chamber 21 is provided at the bottom of the shell 1101, so as to facilitate the adjustment of the position of the first bolt 20, so that the installation and fixation of the PCB drive module body 11 is more convenient and quick, and the applicability is stronger. At the same time, it can play a buffering and protective effect, and can achieve a good heat dissipation and cooling effect on the interior of the shell 1101, thereby ensuring the use effect and life of the PCB drive module body 11.

[0022] The rotating mechanism 2 includes a first connecting block 203 fixedly connected to the side wall of each rectangular tube 18, and the side wall of each first connecting block 203 is rotatably connected to the second connecting block 201 through a rotating pin 202. The second connecting block 201 is fixed to the side wall of the shell 1101 to facilitate rotational adjustment of the rectangular tube 18 and the movable plate 19.

[0023] The first reset mechanism 3 includes two symmetrically arranged first sleeves 301 fixedly connected to the inner wall of the rectangular tube 18, and a first sleeve rod 302 is inserted in the first sleeve 301, the other end of the first sleeve rod 302 is fixed to the side wall of the movable plate 19, and the side wall of the first sleeve 301 is sleeved with a first spring 303, which can enable the movable plate 19 to be telescopically adjusted along the rectangular tube 18. At the same time, after the installation and fixation are completed, when vibration occurs, the first spring 303 can be deformed to play a buffering and protective effect.

[0024] The liquid supply mechanism 4 includes a liquid storage tank 401 fixedly connected to the side wall of the shell 1101, and a piston 403 is connected to the liquid storage tank 401 through a second reset mechanism 5, a liquid supply hole 402 is set between the liquid storage tank 401 and the liquid storage chamber 21, and the movement of the piston 403 is pushed by the first pushing mechanism 6. When installing and fixing, the piston 403 is pushed upward by the first pushing mechanism 6, and at the same time, the second spring 503 is compressed, thereby squeezing the coolant in the liquid storage tank 401, and the coolant is filled into the liquid storage chamber 21 through the liquid supply hole 402, so that the rubber cover 15 expands and wraps the PCB board 1102. At the same time, the heat is dissipated outwardly through the heat dissipation cover 14, which can not only provide a good wrapping and protection effect on the PCB board 1102, but also provide a good heat dissipation and cooling effect on the PCB board 1102, thereby ensuring the use effect and life of the PCB drive module body 11.

[0025] The second reset mechanism 5 includes two symmetrically arranged second sleeves 501 fixedly connected to the top of the liquid storage tank 401, and a second sleeve rod 502 is inserted into the second sleeve 501, the lower end of the second sleeve rod 502 is fixed to the top of the piston 403, and the side wall of the second sleeve 501 is sleeved with a second spring 503, which guides and resets the movement of the piston 403.

[0026] The first pushing mechanism 6 includes a pushing rod 601 fixedly connected to the bottom of the piston 403, and a second ball 602 is provided at the lower end of the pushing rod 601. When the second ball 602 abuts against the top of the mounting plate 1, the piston 403 is pushed to move upward.

[0027] The stirring mechanism 7 includes a fan 702 arranged in the liquid storage chamber 21, and the fan 702 is rotatably connected to the bottom of the shell 1101 through the first rotating shaft 701. The rotation of the first rotating shaft 701 is driven by the driving mechanism 8. After the PCB drive module body 11 is installed and fixed, when vibration occurs, the first rotating shaft 701 and the fan 702 are driven to rotate by the driving mechanism 8, so that the coolant in the liquid storage chamber 21 can be stirred, so that the cooling and heat dissipation efficiency is higher and the effect is better, thereby ensuring the use effect and life of the PCB drive module body 11.

[0028] The driving mechanism 8 includes a driven pulley 804 fixedly sleeved on the side wall of the first rotating shaft 701, and the bottom of the shell 1101 is fixedly connected to an L-shaped support plate 801, the bottom of the support plate 801 is rotatably connected to a driving pulley 803 through a second rotating shaft 802, and the driving pulley 803 and the driven pulley 804 are transmitted through a pulley 805, the rotation of the second rotating shaft 802 is driven by the second pushing mechanism 9, and the second rotating shaft 802 is driven to rotate by the second pushing mechanism 9, the rotation of the second rotating shaft 802 drives the rotation of the driving pulley 803, and drives the driven pulley 804 and the first rotating shaft 701 to rotate through the pulley 805.

[0029] The second pushing mechanism 9 includes a plurality of hemispherical grooves 901 provided on the side wall of the second ball bearing 602, and a gear 902 is fixedly sleeved on the side wall of the second rotating shaft 802, and an L-shaped connecting plate 903 is fixedly connected to the bottom of the supporting plate 801, and a rack 904 is connected to the bottom of the connecting plate 903 through a third reset mechanism 10, and the rack 904 is meshed with the gear 902, and a moving rod 905 is fixedly connected to the side wall of the rack 904, and the other end of the moving rod 905 is inserted into the groove 901. When vibration occurs, under the action of the first spring 303, the PCB driving module body 11 can move, and the PCB When the driving module body 11 moves, it drives the push rod 601 to move. At the same time, the second ball 602 rolls on the top of the mounting plate 1. When the end of the moving rod 905 slides out of the groove 901, it pushes the moving rod 905 and the rack 904 to move. When the end of the moving rod 905 slides into the groove 901 again, the moving rod 905 and the rack 904 can move and reset under the action of the third reset mechanism 10, so that the rack 904 can reciprocate on the side wall of the guide rod 1002 and drive the gear 902 to rotate reciprocatingly. The rotation of the gear 902 drives the rotation of the second rotating shaft 802 and the driving pulley 803.

[0030] The third reset mechanism 10 includes two symmetrically arranged fixed blocks 1001 fixedly connected to the bottom of the connecting plate 903, and the side walls of the fixed blocks 1001 are fixedly connected to two symmetrically arranged guide rods 1002, and the side walls of each guide rod 1002 are sleeved with a slider 1003, and the slider 1003 is fixed to the side wall of the rack 904, and the side walls of each guide rod 1002 are sleeved with a third spring 1004, which guides and resets the movement of the rack 904.

[0031] Working principle: During use, when the PCB drive module body 11 needs to be installed and fixed, the position of the threaded hole 101 can be adjusted, and the rectangular tube 18 and the movable plate 19 can be rotated and adjusted by the rotating mechanism 2. At the same time, the movable plate 19 can be telescopically adjusted along the rectangular tube 18, so as to adjust the position of the first bolt 20, and ensure that the first bolt 20 can be aligned with the threaded hole 101. It can not only be suitable for the installation and fixation of threaded holes 101 in different positions, but also can be installed and fixed when the position of the threaded hole 101 is offset, so that the installation and fixation is more convenient and quick, and the applicability is stronger. Moreover, after installation and fixation, when vibration occurs, the first spring 303 can be deformed, which can play a buffering and protective effect, and prevent its internal components from loosening or even being damaged due to severe vibration. During installation and fixing, when the second ball 602 abuts against the top of the mounting plate 1, the piston 403 is pushed to move upward, and at the same time, the second spring 503 is compressed, thereby squeezing the coolant in the liquid storage tank 401, and the coolant is filled into the liquid storage chamber 21 through the liquid supply hole 402, so that the rubber cover 15 expands to wrap the PCB board 1102, and at the same time, the heat is dissipated outwards through the heat dissipation cover 14, which can not only provide a good wrapping and protection effect on the PCB board 1102, but also provide a good heat dissipation and cooling effect on the PCB board 1102, thereby ensuring the use effect and life of the PCB drive module body 11; After the PCB driving module body 11 is installed and fixed, when vibration occurs, the PCB driving module body 11 can move under the action of the first spring 303, and the movement of the PCB driving module body 11 drives the movement of the push rod 601. At the same time, the second ball 602 rolls on the top of the mounting plate 1. When the end of the moving rod 905 slides out of the groove 901, the moving rod 905 and the rack 904 are pushed to move. At the same time, the third spring 1004 is deformed. When the end of the moving rod 905 slides into the groove 901 again, the moving rod 905 and the rack 904 can The third spring 1004 moves and resets, so that the rack 904 can reciprocate on the side wall of the guide rod 1002, and drive the gear 902 to rotate reciprocatingly. The rotation of the gear 902 drives the second shaft 802 and the active pulley 803 to rotate, and drives the driven pulley 804 and the first shaft 701 to rotate through the pulley 805, thereby driving the fan 702 to rotate, so that the coolant in the liquid storage chamber 21 can be stirred, so that the cooling and heat dissipation efficiency is higher and the effect is better, thereby ensuring the use effect and life of the PCB drive module body 11.

Claims

1. A brushless motor PCB drive module fixing structure, comprising a mounting plate (1) and a PCB drive module body (11), wherein the mounting plate (1) is provided with a plurality of threaded holes (101) arranged in an array, and the PCB drive module body (11) comprises a housing (1101) and a PCB board (1102), characterized in that: The side wall of the housing (1101) is rotatably connected to a plurality of symmetrically arranged rectangular tubes (18) via a rotating mechanism (2), and a moving plate (19) is connected inside the rectangular tube (18) via a first reset mechanism (3), a first bolt (20) is inserted into the top of the moving plate (19), and the first bolt (20) is threadedly fixed to the threaded hole (101), the bottom of the housing (1101) is fixedly connected to a plurality of symmetrically arranged threaded seats (12), and the PCB board (1102) is threadedly fixed to the threaded seat (12) via a second bolt (13), and the inner side wall of the housing (1101) is fixedly connected to a rubber cover (15), and the rubber cover (15) is fixedly sleeved on the threaded seat ( 12), the PCB board (1102) is arranged in the rubber cover (15), and a liquid storage chamber (21) is formed between the rubber cover (15) and the shell (1101), a plurality of hollow heat dissipation covers (14) are fixedly inserted into the side wall of the shell (1101), the outer side wall of the shell (1101) is provided with a liquid supply mechanism (4) for supplying liquid to the liquid storage chamber (21), and the bottom of the shell (1101) is fixedly connected with a plurality of support rods (16) arranged in an array, the bottom of the support rods (16) is provided with a first ball (17), and the bottom of the shell (1101) is provided with a stirring mechanism (7) for stirring the cooling liquid in the liquid storage chamber (21).

2. A brushless motor PCB drive module fixing structure according to claim 1, characterized in that: The rotating mechanism (2) comprises a first connecting block (203) fixedly connected to the side wall of each rectangular tube (18), and the side wall of each first connecting block (203) is rotatably connected to a second connecting block (201) via a rotating pin (202), and the second connecting block (201) is fixed to the side wall of the shell (1101).

3. The brushless motor PCB drive module fixing structure according to claim 1, characterized in that: The first reset mechanism (3) comprises two symmetrically arranged first sleeves (301) fixedly connected to the inner wall of the rectangular tube (18), a first sleeve rod (302) being inserted into the first sleeve (301), the other end of the first sleeve rod (302) being fixed to the side wall of the movable plate (19), and a first spring (303) being sleeved on the side wall of the first sleeve (301).

4. The brushless motor PCB drive module fixing structure according to claim 1, characterized in that: The liquid supply mechanism (4) comprises a liquid storage box (401) fixedly connected to the side wall of the housing (1101), and a piston (403) is connected to the liquid storage box (401) via a second reset mechanism (5). A liquid supply hole (402) is provided between the liquid storage box (401) and the liquid storage chamber (21), and the movement of the piston (403) is driven by a first driving mechanism (6).

5. A brushless motor PCB drive module fixing structure according to claim 4, characterized in that: The second reset mechanism (5) comprises two symmetrically arranged second sleeves (501) fixedly connected to the top of the liquid storage tank (401), and a second sleeve rod (502) is inserted into the second sleeve (501), the lower end of the second sleeve rod (502) is fixed to the top of the piston (403), and a second spring (503) is sleeved on the side wall of the second sleeve (501).

6. A brushless motor PCB drive module fixing structure according to claim 4, characterized in that: The first pushing mechanism (6) comprises a pushing rod (601) fixedly connected to the bottom of the piston (403), and a second ball (602) is provided at the lower end of the pushing rod (601).

7. A brushless motor PCB drive module fixing structure according to claim 6, characterized in that: The stirring mechanism (7) comprises a fan (702) arranged in the liquid storage chamber (21), and the fan (702) is rotatably connected to the bottom of the housing (1101) via a first rotating shaft (701), and the rotation of the first rotating shaft (701) is driven by a driving mechanism (8).

8. The brushless motor PCB drive module fixing structure according to claim 7, characterized in that: The driving mechanism (8) comprises a driven pulley (804) fixedly sleeved on the side wall of the first rotating shaft (701), and the bottom of the housing (1101) is fixedly connected to an L-shaped support plate (801), the bottom of the support plate (801) is rotatably connected to a driving pulley (803) via a second rotating shaft (802), and the driving pulley (803) and the driven pulley (804) are driven via a pulley (805), and the rotation of the second rotating shaft (802) is driven by a second driving mechanism (9).

9. A brushless motor PCB drive module fixing structure according to claim 8, characterized in that: The second pushing mechanism (9) comprises a plurality of hemispherical grooves (901) provided on the side wall of the second ball bearing (602), and a gear (902) is fixedly sleeved on the side wall of the second rotating shaft (802), the bottom of the support plate (801) is fixedly connected to an L-shaped connecting plate (903), and the bottom of the connecting plate (903) is connected to a rack (904) via a third reset mechanism (10), the rack (904) is meshed with the gear (902), the side wall of the rack (904) is fixedly connected to a moving rod (905), and the other end of the moving rod (905) is inserted into the groove (901).

10. A brushless motor PCB drive module fixing structure according to claim 9, characterized in that: The third reset mechanism (10) comprises two symmetrically arranged fixed blocks (1001) fixedly connected to the bottom of the connecting plate (903), and the side walls of the fixed blocks (1001) are fixedly connected to two symmetrically arranged guide rods (1002), the side walls of each of the guide rods (1002) are sleeved with a slider (1003), and the slider (1003) is fixed to the side wall of the rack (904), and the side walls of each of the guide rods (1002) are sleeved with a third spring (1004).

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