CN217720961U

CN217720961U - Brushless direct current ground brush motor

Info

Publication number: CN217720961U
Application number: CN202221297064.9U
Authority: CN
Inventors: 王云彬; 田浪; 征玉龙; 吴冕
Original assignee: Suzhou Kaihang Electromotor Co ltd
Current assignee: Suzhou Kaihang Electromotor Co ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-11-01
Anticipated expiration: 2032-05-26

Abstract

The utility model discloses a brushless DC scrubbing brush motor, including the casing, casing one end is equipped with the end cover of being connected with it, is equipped with rotor subassembly, stator module and circuit board subassembly in proper order in casing and the end cover, and the other end that the end cover was kept away from to the casing is equipped with the casing bearing room, and the casing bearing indoor fixation is provided with down the bearing, and the one end that the casing is close to the end cover is equipped with the end cover bearing room, and its inside is equipped with the upper bearing. The utility model has the advantages that: the area behind the cooperation gear can be high, can effectively improve the clean ability of round brush, and the recess design of rotor subassembly has improved the inside heat-sinking capability of motor, and the motor generates heat lowly, and factor of safety is high, can intelligently control, can realize functions such as speed governing, brake, reversal during the use.

Description

Brushless direct current ground brush motor

Technical Field

The utility model relates to a brushless DC motor technical field specifically is a brushless DC brush motor.

Background

The traditional floor brush motor is a brush direct current floor brush motor, the brush direct current floor brush motor is matched with a high reduction ratio gear to drive a rolling brush to rotate, the torque of the brush direct current floor brush motor is small, the rotating speed is high, the gear ratio needs to be matched with the brush direct current floor brush motor to be high, the gear efficiency is low, the loading capacity after the brush direct current floor brush motor is matched with the gear is low (namely, the torque is small, the power is high), and in addition, the brush direct current motor cannot realize intelligent control.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a brushless DC ground brush motor to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a brushless DC scrubbing brush motor, includes the casing, casing one end is equipped with the end cover of being connected with it, the casing with be equipped with rotor subassembly, stator module and circuit board subassembly in the end cover in proper order, the casing is kept away from the other end of end cover is equipped with the casing bearing room, the casing bearing indoor fixation is provided with down the bearing, the casing is close to the one end of end cover is equipped with the end cover bearing room, and its inside is equipped with the upper bearing.

Furthermore, the stator assembly is attached to the inner wall of the casing, so that the stator assembly is more firmly attached to the casing and cannot fall off after the operation time is long.

Furthermore, the end cover bearing chamber is internally provided with a gasket which pre-loads the axial load of the upper bearing, so that the rigidity of the bearing is improved, and the motor is prevented from resonance.

Furthermore, the circuit board assembly lead passes through the end cover opening arranged in the middle of the end cover, the lead of the circuit board is not in contact with the rotor or the stator, and the installation is more neat and attractive.

Furthermore, the end cover is fixedly connected with the casing through a plurality of screws, so that the end cover is more stably connected with the casing, and the sealing effect of the end cover is ensured.

Furthermore, at least four air outlets are formed in the outer side of one end, close to the bearing chamber of the machine shell, and the plurality of air outlets can achieve the heat dissipation effect of the rotor assembly and the stator assembly in the machine shell, so that the purpose of excellent heat dissipation effect is achieved.

Further, the rotor subassembly includes iron core, four magnet steel and cooling fan blade, four openings have been seted up to the iron core, four magnet steel seted up with the split type structure that the iron core opening equals, just four magnet steel thickness are greater than the opening degree of depth can form certain recess like this, and this recess has promoted the inside heat-sinking capability of casing, makes the motor operation more stable, and four the magnet steel comprises two pairs of S utmost point and N utmost point magnet steel.

Further, the iron core pressure equipment in rotor subassembly middle part, four magnet steel pass through glue bond in the iron core opening, and adjacent two four magnet steel are higher than the iron core opening part forms groove structure, and its groove structure is formed through the matching of iron core and four magnet steel.

Advantageous effects

The utility model provides a brushless DC scrubbing brush motor, the area behind the cooperation gear carries the ability height, can effectively improve the clean ability of round brush, and the groove design of rotor subassembly has improved the inside heat-sinking capability of motor, and the motor generates heat lowly, and factor of safety is high, can intelligently control, can realize functions such as speed governing, brake, reversal during the use.

Drawings

FIG. 1 is a schematic sectional view of the overall structure of the present invention;

FIG. 2 is an exploded view of the overall structure of the present invention;

fig. 3 is a schematic structural view of the rotor assembly of the present invention;

fig. 4 is a schematic diagram of the iron core structure of the present invention.

Reference numerals

1-circuit board assembly, 2-screw, 3-end cover, 4-end cover bearing chamber, 5-gasket, 6-upper bearing, 7-machine shell, 8-stator assembly, 9-machine shell bearing chamber, 10-lower bearing, 11-rotor assembly, 12-air outlet, 13-end cover port, 14-iron core, 15-four magnetic steel, 16-cooling fan blade and 17-groove structure.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Examples

As shown in fig. 1-4, a brushless dc ground brush motor comprises a housing 7, an end cap 3 connected to one end of the housing 7, a rotor assembly 11, a stator assembly 8 and a circuit board assembly 1 sequentially arranged in the housing 7 and the end cap 3, a housing bearing chamber 9 arranged at the other end of the housing 7 far away from the end cap 3, a lower bearing 10 fixedly arranged in the housing bearing chamber 9, an end cap bearing chamber 4 arranged at one end of the housing 7 near the end cap 3, and an upper bearing 6 arranged in the housing.

In the embodiment, the stator assembly 8 is attached to the inner wall of the machine shell 7, so that the stable operation of the machine shell is ensured, the gasket 5 is arranged in the end cover bearing chamber 4 and pre-loads an axial load on the upper bearing, the bearing rigidity is improved, and the motor is prevented from resonance. The lead of the circuit board assembly 1 passes through an end cover port 13 arranged in the middle of the end cover 3, the lead of the circuit board is not contacted with the rotor or the stator, and the installation is more neat and beautiful.

The end cover 3 is fixedly connected with the shell 7 through the plurality of screws 2, the tight connection effect is obtained through the connection of the plurality of screws 2 and the shell 7, the sealing effect can be achieved, at least four air outlets 12 are formed in the outer side of one end, close to the shell bearing chamber 9, of the shell 7, the air outlets can dissipate heat inside the shell, the service life of the motor is prolonged, and the operation is more stable.

The rotor assembly 11 comprises an iron core 14, four magnetic steels 15 and cooling fan blades 16, wherein the iron core 14 is provided with four openings, the four magnetic steels 15 are provided with split structures equal to the openings of the iron core 14, and the thicknesses of the four magnetic steels 15 are larger than the depths of the openings; the iron core 14 is pressed in the middle of the rotor assembly 11, the four magnetic steels 15 are bonded in the opening of the iron core 14 through glue, and the two adjacent magnetic steels 15 are higher than the opening of the iron core 14 to form a groove structure 17.

The brushless direct current floor brush motor has low output torque, low heating of the motor and high safety factor, and is matched with the low reduction ratio gear to drive the rolling brush to rotate, so that the gear efficiency is improved, and the belt loading capacity after the gear is matched is high, so that the rolling brush can have a better cleaning effect; the volume is small, the roller brush can be arranged in the roller brush, the space is saved, meanwhile, the external sealing, the water and the dust can be prevented, and the service life is prolonged; the brushless motor is convenient for software control, and realizes the functions of speed regulation, braking, reversal and the like when in use.

Rotor core designs the opening of four equipartition angles in the rotor subassembly, and four magnet steels of N and S utmost point design into the split type structure that equals with rotor core opening angle, and four magnet steel thickness are higher than the opening degree of depth, and rotor core pressure equipment is in the rotor subassembly middle part, and four magnet steels of two antipodal glue adhesion are in the rotor core opening, and four adjacent magnet steels are higher than rotor core opening part and form groove structure. The motor circular telegram, the cooling fan blade is rotatory, and the air is inhaled from the end cover mouth, flows through four recesses of rotor subassembly, flows out by four air outlets again to reach the radiating effect in the motor.

The opening of the rotor core and the split design of the four magnetic steels save the use of materials, reduce the production cost, and the groove structure formed by the two greatly increases the air duct area, and improves the heat dissipation effect of the motor.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention.

Claims

1. The utility model provides a brushless DC scrubbing brush motor which characterized in that: including casing (7), casing (7) one end is equipped with end cover (3) of being connected with it, casing (7) with be equipped with rotor subassembly (11), stator module (8) and circuit board subassembly (1) in proper order in end cover (3), casing (7) are kept away from the other end of end cover (3) is equipped with casing bearing room (9), casing bearing room (9) internal fixation is provided with lower bearing (10), casing (7) are close to the one end of end cover (3) is equipped with end cover bearing room (4), and its inside is equipped with upper bearing (6).

2. The brushless dc ground brush motor according to claim 1, wherein: and the stator assembly (8) is attached to the inner wall of the casing (7).

3. The brushless dc brush motor according to claim 1, wherein: and a gasket (5) is arranged in the end cover bearing chamber (4).

4. The brushless dc ground brush motor according to claim 1, wherein: the lead of the circuit board assembly (1) passes through an end cover opening (13) arranged in the middle of the end cover (3).

5. The brushless dc ground brush motor according to claim 1, wherein: the end cover (3) is fixedly connected with the shell (7) through a plurality of screws (2).

6. The brushless dc ground brush motor according to claim 1, wherein: and at least four air outlets (12) are formed in the outer side of one end, close to the shell bearing chamber (9), of the shell (7).

7. The brushless dc brush motor according to claim 1, wherein: rotor subassembly (11) include iron core (14), four magnet steel (15) and cooling fan blade (16), four openings have been seted up in iron core (14), four magnet steel (15) seted up with the split type structure that iron core (14) opening equals, and four magnet steel (15) thickness is greater than the opening degree of depth, and four magnet steel (15) comprise two pairs of S utmost point and N utmost point magnet steel.

8. The brushless dc brush motor of claim 7, wherein: iron core (14) pressure equipment in rotor subassembly (11) middle part, four magnet steel (15) through glue bond in iron core (14) opening, and adjacent two magnet steel (15) are higher than iron core (14) opening part forms groove structure (17).