CN113472130B - Direct current brushless motor - Google Patents

Direct current brushless motor Download PDF

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Publication number
CN113472130B
CN113472130B CN202110757631.8A CN202110757631A CN113472130B CN 113472130 B CN113472130 B CN 113472130B CN 202110757631 A CN202110757631 A CN 202110757631A CN 113472130 B CN113472130 B CN 113472130B
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CN
China
Prior art keywords
motor
threaded hole
protection box
water tank
plate
Prior art date
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Active
Application number
CN202110757631.8A
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Chinese (zh)
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CN113472130A (en
Inventor
张涵宇
周文龙
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Guilin Badawei Drive Technology Co ltd
Original Assignee
Shenzhen Badawei Operation Control Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Shenzhen Badawei Operation Control Technology Co ltd filed Critical Shenzhen Badawei Operation Control Technology Co ltd
Priority to CN202110757631.8A priority Critical patent/CN113472130B/en
Publication of CN113472130A publication Critical patent/CN113472130A/en
Application granted granted Critical
Publication of CN113472130B publication Critical patent/CN113472130B/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00Methods preventing fouling
    • B08B17/02Preventing deposition of fouling or of dust
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1735Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at only one end of the rotor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/02Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/26Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The invention relates to the technical field of direct current brushless motors, in particular to a direct current brushless motor, which comprises a protective box, wherein a ventilation net is arranged at the front end of the protective box, a motor fixing device is arranged at one end of the protective box, the motor fixing device comprises a motor main body, an output shaft is arranged at one end of the motor main body, a first baffle plate is arranged on the outer side of the output shaft at one end of the motor main body, a first threaded hole is formed in the side surface of the first baffle plate, a rolling bearing is arranged at one end inside the protective box, a second threaded hole is formed in one end inside the protective box, a first hexagonal screw is arranged inside the second threaded hole, a third threaded hole is formed in the other end of the protective box, a cooling mechanism is arranged inside the third threaded hole, and a push-pull device is arranged at the upper end of the protective box, simple structure, convenient operation can prevent that the dust from getting into the guard box inside, cools down to the guard box.

Description

Brushless DC motor
Technical Field
The invention relates to the technical field of direct current brushless motors, in particular to a direct current brushless motor.
Background
The brushless DC motor is composed of a motor main body and a driver, is a typical electromechanical integration product, is a brushless motor without a brush and a commutator, also called a commutator-free motor, and is a brushless type when the motor is born early in nineteen years, namely an AC squirrel-cage asynchronous motor, the motor is widely applied, but the asynchronous motor has many defects which cannot be overcome, so that the motor technology is slowly developed, transistors are born in the middle of the last century, therefore, the DC brushless motor which adopts a transistor commutation circuit to replace the brush and the commutator is produced, the novel brushless DC motor is called an electronic commutation type DC motor, overcomes the defects of the first generation brushless DC motor, the existing brushless DC motor can be protected by adding a protection box outside the motor when in use, but after adding the protection box, the heat dissipation of motor removes dust will be very difficult, and the use of motor can be influenced to the temperature rise in the protection box, and gets into too much dust in the protection box and probably cause the motor to damage, in order to solve above-mentioned problem, we have provided a DC brushless motor.
Disclosure of Invention
The invention mainly aims to provide a brushless direct current motor, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a direct current brushless motor comprises a protection box, wherein a ventilation net is installed at the front end of the protection box, a motor fixing device is arranged at one end inside the protection box, the motor fixing device comprises a motor main body, an output shaft is installed at one end of the motor main body, a first baffle plate is arranged on the outer side of the output shaft at one end of the motor main body, a first threaded hole is formed in the side surface of the first baffle plate, a rolling bearing is arranged at one end inside the protection box, a second threaded hole is formed in one end inside the protection box, a first hexagonal screw is installed inside the second threaded hole, a third threaded hole is formed in the other end of the protection box, a cooling mechanism is arranged inside the third threaded hole, a push-pull device is arranged at the upper end of the protection box and comprises a fixing plate, a sliding groove is formed in the front end of the fixing plate, the front end of fixed plate is provided with the push-and-pull door, both ends are provided with the slider around the push-and-pull door, the inside bottom of guard box is provided with the mounting panel.
Preferably, the cooling mechanism includes an external thread section of thick bamboo, the inside upper left corner of an external thread section of thick bamboo is provided with the water tank, the bottom both sides position of water tank is equipped with first filtration otter board and second filtration otter board, water tank surface upper end is equipped with first water inlet and second water inlet, first delivery port has been seted up to the interior bottom right side position of water tank, the inside of an external thread section of thick bamboo is provided with the cooling fan, the left side of cooling fan is equipped with brush board and coaxial rotation and connects, the left side of brush board is equipped with the cylinder through rotating the connection, the cylinder is located second filtration otter board right side, be threaded connection between an external thread section of thick bamboo and the third screw hole.
Preferably, the fixed plates are provided with two sets, the sliding door is located between the two sets of fixed plates, the outer surface size of the sliding block is matched with the inner size of the sliding groove, and the sliding block is connected with the sliding groove in a sliding mode.
Preferably, the output shaft is rotatably connected with the first baffle, four groups of first threaded holes are provided, four groups of second threaded holes are provided, the four groups of second threaded holes are uniformly arranged at one end of the peripheral protection box of the rolling bearing, and the positions of the first threaded holes correspond to the positions of the second threaded holes.
Preferably, the motor main body is fixedly installed at the upper end of the installation plate.
Preferably, be provided with the second hexagonal screw between the inside bottom of mounting panel and guard box, the inside bottom at the guard box is installed through the second hexagonal screw to the mounting panel.
Compared with the prior art, the invention has the following beneficial effects: the direct-current brushless motor is characterized in that an output shaft is inserted into a rolling bearing, then a motor main body can be installed at the bottom end of the interior of a protection box through a second hexagonal screw, a first threaded hole in a first baffle is aligned with a second threaded hole at the moment, the first hexagonal screw is screwed tightly, the motor main body is fixed and completed, a cooling fan is started, the cooling fan rotates a brush plate through a shaft, a plurality of through holes are formed in the brush plate, the brush plate rotates a roller through a rotating shaft, the cooling fan blows air into the protection box from the outside to cool the interior of the protection box, the air firstly passes through a first air filter screen plate when entering the interior of the protection box, the first air filter screen plate filters impurity sand grains in the air, and the second air filter screen plate uniformly wipes bubbles flowing through a first water outlet of a water tank to form a mesh of a second air filter screen plate through the roller, then bubble liquid with dust on the second air filter screen plate is formed into bubble shape by the suction force of the cooling fan to carry away the dust, when the bubbles enter the cavity, the rotating brush on the brush plate punctures the bubbles to prevent dust from entering the protective box, at the moment, the water mist area formed in the cavity can be recycled to the bubble liquid in the water tank through the second water outlet and the second water inlet, when the device in the protective box breaks down, the sliding door can be pulled to enable the sliding block to slide in the sliding groove, the sliding door is pulled open, then the device in the protective box is repaired, and the sliding door can be closed again after the repair is finished, the device is simple to operate and convenient to use, can prevent effectively that outside dust from getting into in the guard box and can cool down to the guard box is inside, prevent that the motor main part from using because factors such as temperature height or dust influence.
Drawings
Fig. 1 is a schematic view of an overall structure of a dc brushless motor according to the present invention;
fig. 2 is a schematic diagram of an internal structure of a dc brushless motor according to the present invention;
FIG. 3 is a schematic structural diagram of a motor fixing device of a brushless DC motor according to the present invention;
FIG. 4 is a schematic structural diagram of a cooling mechanism of a brushless DC motor according to the present invention;
fig. 5 is a schematic structural view of a push-pull device of a brushless dc motor according to the present invention;
FIG. 6 is a schematic view of a sectional structure of a fixing plate of a brushless DC motor according to the present invention
Fig. 7 is a schematic diagram of an internal structure of a cooling mechanism of a brushless dc motor according to the present invention.
In the figure: 1. a protection box; 2. a motor fixing device; 21. a motor main body; 22. a first baffle plate; 23. a first threaded hole; 24. an output shaft; 25. a rolling bearing; 26. a second threaded hole; 27. a first hexagonal screw; 3. a push-pull device; 31. a fixing plate; 32. a chute; 33. a sliding door; 34. a slider; 4. a cooling mechanism; 41. an externally threaded barrel; 42. a cooling fan; 43. a first air filter screen plate; 45. a second air filter screen; 46. a water tank; 47. a first water inlet; 48. a second water inlet; 54. a first water outlet; 53. a second water outlet; 49. a roller 50, a brush 52, a brush plate; 51. a through hole; 6. mounting a plate; 7. and a third threaded hole.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.
As shown in fig. 1 to 7, a brushless dc motor includes a protection box 1, and is characterized in that: the front end of the protection box 1 is provided with a ventilation net 5, one end inside the protection box 1 is provided with a motor fixing device 2, the motor fixing device 2 comprises a motor main body 21, one end of the motor main body 21 is provided with an output shaft 24, the outer side of the output shaft 24 at one end of the motor main body 21 is provided with a first baffle 22, the side surface of the first baffle 22 is provided with a first threaded hole 23, one end inside the protection box 1 is provided with a rolling bearing 25, one end inside the protection box 1 is provided with a second threaded hole 26, a first hexagonal screw 27 is arranged inside the second threaded hole 26, the other end of the protection box 1 is provided with a third threaded hole 7, a cooling mechanism 4 is arranged inside the third threaded hole 7, the left side of the cooling mechanism 4 is provided with a first air filter screen plate 43, and the right side of the cooling mechanism 4 is provided with a cooling fan 42, the upper end of the protection box 1 is provided with a push-pull device 3, the push-pull device 3 comprises a fixing plate 31, a sliding groove 32 is formed in the front end of the fixing plate 31, a sliding door 33 is arranged at the front end of the fixing plate 32, sliding blocks 34 are arranged at the front end and the rear end of the sliding door 33, and a mounting plate 6 is arranged at the bottom end of the inside of the protection box 1.
In this embodiment, the temperature reducing mechanism 4 includes an external thread cylinder 41, a water tank 46 is disposed at an upper left corner inside the external thread cylinder 41, a first air filter screen 43 and a second air filter screen 45 are disposed at two side positions of a bottom of the water tank 46, the first air filter screen 43 filters large impurity sand particles in sucked air, a first water inlet 47 and a second water inlet 48 are disposed at an upper end of an outer surface of the water tank 46, a first water outlet 54 is disposed at a right side position of an inner bottom of the water tank 46, the water tank 46 can be used for storing bubble liquid, the bubble liquid flowing from the first water outlet 54 is expanded to a mesh to form a water film by the second air filter screen 45, a temperature reducing fan 42 is disposed inside the external thread cylinder 41, a brush plate 52 is coaxially and rotatably connected to a left side of the temperature reducing fan 42, brushes 50 made of plastic material are uniformly distributed on a left side of the brush plate 52, the brushes 50 can puncture bubbles wrapped with dust to form a water mist region blocking dust within a certain range, the left side of the brush plate 52 is provided with a roller 49 through rotating connection, the roller 49 is positioned at the right side of the second air filter screen plate 45, the roller 49 is used for evenly smearing bubble liquid adhered to the second air filter screen plate 45, and the external thread cylinder 41 is in threaded connection with the third threaded hole 7.
Specifically, the third threaded hole 7 can facilitate the disassembly of the external thread cylinder 41, and the external thread cylinder 41 is convenient to clean.
In this embodiment, the fixing plates 31 are provided with two sets, the sliding door 33 is located between the two sets of fixing plates 31, the outer surface size of the sliding block 34 is matched with the inner size of the sliding chute 32, and the sliding block 34 is slidably connected with the inner portion of the sliding chute 32.
Specifically, the sliding block 34 can be more conveniently slid inside the sliding door 33 through the sliding groove 32, the sliding door 33 can be driven to move through the sliding block 34, and the inside of the protection box 1 can be repaired conveniently.
In this embodiment, the output shaft 24 is rotatably connected to the first baffle 22, there are four sets of first threaded holes 23, there are four sets of second threaded holes 26, and the four sets of second threaded holes 26 are uniformly disposed at one end of the protection box 1 around the rolling bearing 25, and the positions of the first threaded holes 23 correspond to the positions of the second threaded holes 26.
Specifically, the motor main body 21 can be better fixed through the first threaded hole 23 and the second threaded hole 26, and the motor main body 21 is prevented from vibrating and affecting the use of the motor main body 21.
In this embodiment, the motor main body 21 is fixedly mounted on the upper end of the mounting plate 6.
In this embodiment, a second hexagonal screw is disposed between the mounting plate 6 and the inner bottom end of the protection box 1, and the mounting plate 6 is mounted at the inner bottom end of the protection box 1 through the second hexagonal screw.
Specifically, the motor main body 21 can be fixed at the lower end of the interior of the protection box 1 through the mounting plate 6, so that the motor main body 21 is convenient to mount.
It should be noted that, the present invention is a dc brushless motor, when in use, the output shaft 24 is inserted into the rolling bearing 25, then the motor main body 21 can be installed at the bottom end of the interior of the protection box 1 through the second hexagonal screw, at this time, the first threaded hole 23 on the first baffle 22 is aligned with the second threaded hole 26, the first hexagonal screw 27 is screwed, the motor main body 21 is fixed, the cooling fan 42 is started, the cooling fan 42 coaxially rotates the brush plate 52, the brush plate 52 has a plurality of through holes 51, the brush plate 52 rotates the roller 49 through the rotating shaft, the cooling fan 42 blows air into the protection box 1 from the outside to cool the interior of the protection box 1, when the air enters the protection box 1, the air firstly passes through the first air filter screen plate 43, the first air filter screen plate 43 filters impurity sand particles in the air, the second air filter screen plate 45 uniformly wipes bubble liquid flowing down through the first water outlet 54 of the water tank 46 through the roller 49 The mesh of the second air filter screen plate 45 is formed, then bubble liquid attached with dust on the second air filter screen plate 45 is formed into bubble bubbles through the suction force of the cooling fan 42 to take away the dust, when the bubbles enter the cavity, the bubbles are punctured through rotating the brush 50 on the brush plate 52, the dust is prevented from entering the protection box 1, at the moment, a water mist region is formed in the cavity, the bubble liquid circulating to the water tank 46 through the second water outlet 53 and the second water inlet 48 can be reused, when a device inside the protection box 1 breaks down, the sliding door 33 can be pulled to enable the sliding block 34 to slide inside the sliding groove 32, the sliding door 33 is pulled to repair the device inside the protection box 1, and the sliding door 33 can be closed again after the repair is finished.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. A direct-current brushless motor comprises a protection box (1) and is characterized in that a ventilation net (5) is installed at the front end of the protection box (1), a motor fixing device (2) is arranged at one end inside the protection box (1), the motor fixing device (2) comprises a motor main body (21), an output shaft (24) is installed at one end of the motor main body (21), a first baffle plate (22) is arranged on the outer side of the output shaft (24) at one end of the motor main body (21), a first threaded hole (23) is formed in the side edge surface of the first baffle plate (22), a rolling bearing (25) is formed in one end inside the protection box (1), a second threaded hole (26) is formed in one end inside the protection box (1), a first hexagonal screw (27) is installed inside the second threaded hole (26), a third threaded hole (7) is formed in the other end of the protection box (1), a cooling mechanism (4) is arranged inside the third threaded hole (7), a first air filter screen plate (43) is arranged on the left side of the cooling mechanism (4), a cooling fan (42) is arranged on the right side of the cooling mechanism (4), a push-pull device (3) is arranged at the upper end of the protective box (1), the push-pull device (3) comprises a fixed plate (31), a sliding groove (32) is formed in the front end of the fixed plate (31), a sliding door (33) is arranged at the front end of the fixed plate (31), sliding blocks (34) are arranged at the front end and the rear end of the sliding door (33), a mounting plate (6) is arranged at the bottom end inside the protective box (1), the cooling mechanism (4) comprises an external threaded cylinder (41), a water tank (46) is arranged at the upper left corner of the inside of the external threaded cylinder (41), and the water tank (46) can be used for storing bubble liquid, the bottom position of water tank (46) is equipped with first filtration otter board (43) and second filtration otter board (45), water tank (46) surface upper end is equipped with first water inlet (47) and second water inlet (48), first delivery port (54) have been seted up to the interior bottom right side position of water tank (46), the inside of external screw thread section of thick bamboo (41) is provided with cooling fan (42), the left side of cooling fan (42) is equipped with brush board (52) and coaxial rotation is connected, the left side of brush board (52) is equipped with cylinder (49), cylinder (49) are located the right side of second filtration otter board (45) side the external screw thread section of thick bamboo (41) is threaded connection with between third screw hole (7).
2. A dc brushless motor according to claim 1, wherein: the fixed plate (31) is provided with two sets, the sliding door (33) is located between the two sets of fixed plates (31), the outer surface size of the sliding block (34) is matched with the inner size of the sliding groove (32), the sliding block (34) is connected with the sliding groove (32) in a sliding manner, the cooling mechanism (4) comprises an external thread cylinder (41), a water tank (46) is arranged at the upper left corner of the inside of the external thread cylinder (41), a first air filter screen (43) and a second air filter screen (45) are arranged at the bottom of the water tank (46), a first water inlet (47) and a second water inlet (48) are arranged at the upper end of the outer surface of the water tank (46), a first water outlet (54) is formed at the right side of the inner bottom of the water tank (46), a cooling fan (42) is arranged inside the external thread cylinder (41), a hairbrush plate (52) is arranged on the left side of the cooling fan (42) and is connected with the same shaft in a rotating manner, a roller (49) is arranged on the left side of the brush plate (52), the roller (49) is positioned on the right side of the second air filter screen plate (45), and the external thread cylinder (41) is in threaded connection with the third threaded hole (7).
3. A dc brushless motor according to claim 1, wherein: the output shaft (24) is rotatably connected with the first baffle plate (22), four groups of first threaded holes (23) are provided, four groups of second threaded holes (26) are provided, the four groups of second threaded holes (26) are uniformly arranged at one end of the surrounding protection box (1) of the rolling bearing (25), and the positions of the first threaded holes (23) correspond to the positions of the second threaded holes (26).
4. A brushless dc motor according to claim 1, wherein: the motor main body (21) is fixedly arranged at the upper end of the mounting plate (6).
5. A brushless dc motor according to claim 1, wherein: be provided with second hexagonal screw between the inside bottom of mounting panel (6) and guard box (1), the inside bottom at guard box (1) is installed through second hexagonal screw in mounting panel (6).
CN202110757631.8A 2021-07-05 2021-07-05 Direct current brushless motor Active CN113472130B (en)

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CN113472130B true CN113472130B (en) 2022-09-30

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