CN222531466U

CN222531466U - Heat dissipation brushless DC motor shell

Info

Publication number: CN222531466U
Application number: CN202421180687.7U
Authority: CN
Inventors: 林青; 陈海青; 梁永飞
Original assignee: Wuxi Qingchuang Motor Manufacturing Co ltd
Current assignee: Wuxi Qingchuang Motor Manufacturing Co ltd
Priority date: 2024-05-28
Filing date: 2024-05-28
Publication date: 2025-02-25
Anticipated expiration: 2034-05-28

Abstract

The utility model belongs to the technical field of motors, in particular to a heat-dissipating brushless direct current motor shell which comprises a shell and a rear cover, wherein the front end of the shell is provided with a vent hole so that air flows out, a stator, a rotor and a driving shaft are arranged in the shell, one end of the driving shaft, which is positioned in the shell, is fixedly connected with a fan blade, the surface of the rear cover is provided with a plurality of vent holes, and the surface of the driving shaft is provided with a flow guide component.

Description

Heat dissipation brushless DC motor shell

Technical Field

The utility model relates to the technical field of motors, in particular to a heat-dissipation brushless direct current motor shell.

Background

The permanent magnet brushless direct current motor is a common control type motor and is characterized in that the rotating speed is low, the torque is large, when the permanent magnet brushless direct current motor is used, auxiliary use is mainly carried out through an internal permanent magnet mechanism, the permanent magnet is a thermosensitive element, and if the temperature is too high, the magnetic steel is demagnetized, so that the motor performance is reduced, and the service life of the brush motor is influenced;

In the prior art, the permanent magnet brushless direct current motor usually relies on the shell to naturally dissipate heat in order to solve the heat dissipation problem, but in some places where the external environment is relatively hot, the shell of the pure permanent magnet brushless direct current motor body naturally dissipates heat, so that good heat dissipation performance cannot be achieved, the service life of the motor is reduced, and the motor is extremely inconvenient to use.

The current chinese patent with publication number CN216599237U discloses a high-efficiency heat dissipating device for brushless dc motor stator, which comprises a brushless dc motor housing fixedly installed above the base, and the outer surface of the brushless dc motor housing is provided with a heat exchange tube, the upper part of the brushless dc motor housing is fixedly installed with a protective case, and the interior of the protective case is provided with a heat exchange seat, the interior of the heat exchange seat is provided with a heat dissipating plate, the interior of the base is fixedly installed with a motor stator, and the interior of the motor stator is provided with two bearings, the interior of the bearings is provided with a motor rotor in a penetrating manner, and one side of the motor rotor far away from the motor stator is provided with a fan blade.

In view of the above and related art, the inventor considers that the device usually has the following defects that the rotor drives the fan to radiate heat from the stator, and when air flows to the stator, the air flow is blocked by the stator, and the heat radiation effect of the air flow on a stator area far away from the fan is weaker, so that improvement is needed, and therefore, the invention provides a heat radiation brushless direct current motor housing.

Disclosure of utility model

In order to overcome the defects in the prior art and solve the technical problems, the utility model provides a heat-dissipation brushless direct current motor shell.

The technical scheme includes that the heat dissipation brushless direct current motor shell comprises a shell body and a rear cover, wherein the front end of the shell body is provided with vent holes so that air flows out, a stator, a rotor and a driving shaft are arranged in the shell body, one end of the driving shaft, which is positioned in the shell body, is fixedly connected with the fan blades, the surface of the rear cover is provided with a plurality of vent holes, the surface of the driving shaft is provided with a flow guide component, the flow guide component comprises a cavity, a plurality of groups of air outlet holes and an air inlet, the cavity is arranged in the driving shaft, the air outlet holes are formed in the surface of the driving shaft at equal intervals, the air inlet is formed in the surface of the driving shaft, when the brushless direct current motor operates, the driving shaft drives the fan blades to rotate, so that external air flows into the shell body from the vent holes to horizontally flow, flows into the cavity from the air inlet, and flows vertically from the air outlet holes to dissipate heat of the stator, and compared with the prior art, the heat dissipation effect of the stator is comprehensively improved.

Preferably, each group of air outlet holes is annularly provided with four.

Preferably, the flow guiding assembly further comprises a flow guiding plate fixedly arranged on the surface of the driving shaft, and when the air flows, the air flow is guided through the flow guiding plate, so that the air flow can flow from the air inlet into the cavity.

Preferably, the baffle is horn-shaped.

Preferably, the inside of the vent is fixedly connected with a dust screen, and dust in the airflow passing through the vent is filtered through the dust screen.

Preferably, the outer wall of the shell is fixedly provided with a plurality of heat radiation fins.

Preferably, the surface mounting of back lid has the clearance subassembly, the clearance subassembly includes the rotation axis, the rotation axis rotates the center department of installing at the back lid, the one end laminating drive shaft of rotation axis.

Preferably, one end of the rotating shaft is fixedly connected with a plurality of connecting columns, and the other end of the rotating shaft is fixedly connected with a hairbrush plate.

Preferably, the cleaning assembly further comprises a plurality of connecting grooves, the connecting grooves are formed in one end of the driving shaft, the connecting columns are inserted into the connecting grooves during motor assembly, the driving shaft drives the rotating shaft to rotate, the brush plate can clean the dust screen, dust attached to the surface is removed, the connecting columns automatically withdraw from the connecting grooves when the rear cover is opened, connection between the driving shaft and the rotating shaft is canceled, and the motor is convenient to disassemble and assemble.

Preferably, the surface of the rear cover is fixedly connected with a rain cover for shielding the ventilation opening.

The utility model has the advantages that:

1. According to the utility model, the fan blades are driven to rotate by the driving shaft, so that external air flows into the shell from the air inlet to cool the stator, and the air flows into the cavity from the air inlet and flows vertically from the air outlet, so that the cooling effect of the stator is comprehensively improved compared with the prior art.

2. According to the utility model, the connecting column is inserted into the connecting groove, so that the driving shaft drives the rotating shaft to rotate, the brush plate can clean the dust screen, dust attached to the surface is removed, and when the rear cover is opened, the connecting column automatically withdraws from the connecting groove, the connection between the driving shaft and the rotating shaft is canceled, and the motor is convenient to disassemble and assemble.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the housing of the present utility model;

FIG. 3 is a cross-sectional view of a drive shaft of the present utility model;

FIG. 4 is a schematic view of a cleaning assembly according to the present utility model;

Fig. 5 is a side view of fig. 4 in accordance with the present utility model.

In the figure, 1, a shell; 2, a rear cover, 3, a driving shaft, 4, fan blades, 5, a flow guiding component, 51, a cavity, 52, an air outlet, 53, an air inlet, 54, a flow guiding plate, 6, an air vent, 7, a dust screen, 8, a cleaning component, 81, a rotating shaft, 82, a connecting column, 83, a connecting groove, 84, a hairbrush plate, 9, a heat radiation fin and 10, and a rain shielding cover.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-3, a heat dissipation brushless dc motor housing includes a housing and a rear cover, a vent hole is formed in the front end of the housing to enable airflow to flow out, a stator, a rotor and a driving shaft are installed in the housing, one end of the driving shaft located in the housing is fixedly connected with a fan blade, a plurality of vents are formed in the surface of the rear cover, a flow guiding assembly is installed on the surface of the driving shaft and comprises a cavity, a plurality of groups of air outlet holes and an air inlet, the cavity is formed in the driving shaft, the air outlet holes are formed in the surface of the driving shaft at equal intervals, the air inlet is formed in the surface of the driving shaft, when the brushless dc motor operates, the driving shaft drives the fan blade to rotate, so that external airflow enters the housing through the vents to dissipate heat of the stator, and when the airflow flows, the airflow can flow from the air inlet to the cavity and vertically flow through the air outlet holes, so that the internal area of the stator can dissipate heat, compared with the prior art, the heat dissipation effect of the stator is comprehensively improved.

Four air outlet holes are annularly arranged in each group.

The air flow guiding assembly further comprises an air guiding plate which is fixedly arranged on the surface of the driving shaft, and when the air flow flows, the air flow is guided through the air guiding plate, so that the air flow can flow from the air inlet into the cavity.

The deflector is horn-shaped.

The inside fixedly connected with dust screen of vent filters the dust in the air current that passes through the vent through the dust screen.

The outer wall of the shell is fixedly provided with a plurality of radiating fins.

Example two

In a first embodiment, referring to fig. 4-5, another embodiment of the present utility model is provided, in which a cleaning assembly is mounted on a surface of a rear cover, the cleaning assembly includes a rotating shaft rotatably mounted at a center of the rear cover, and one end of the rotating shaft is attached to a driving shaft.

One end fixedly connected with a plurality of spliced pole of rotation axis, the other end fixedly connected with brush board of rotation axis.

The cleaning assembly further comprises a plurality of connecting grooves, the connecting grooves are formed in one end of the driving shaft, when the motor is assembled, the connecting columns are inserted into the connecting grooves, and then the driving shaft drives the rotating shaft to rotate, so that the brush plate can clean the dust screen, dust attached to the surface is removed, and when the rear cover is opened, the connecting columns automatically withdraw from the connecting grooves, the connection between the driving shaft and the rotating shaft is canceled, and the motor is convenient to disassemble and assemble.

All electric components in the scheme are connected with an adaptive power supply through wires by a person skilled in the art, and an appropriate controller is selected according to actual conditions so as to meet control requirements, specific connection and control sequences, and the electric connection is completed by referring to the following working principles in the working sequence among the electric components, wherein the detailed connection means are known in the art, and the following main description of the working principles and processes is omitted from the description of electric control.

None of the parts of the device are the same as or can be implemented using prior art.

When the brushless direct current motor operates, the driving shaft drives the fan blades to rotate, so that external air flows into the shell from the air inlet to cool the stator, the air flows into the cavity from the air inlet to flow vertically from the air outlet, and the cooling effect on the inner area of the stator is comprehensively improved compared with the prior art.

The dust in the air current through the vent is filtered through the dust screen, and during the motor equipment, insert the spliced pole inside of spread groove, and then make the drive shaft drive the rotation axis and rotate for the brush board can clear up the dust screen, gets rid of surface adhesion's dust, and when the back lid was opened, the spliced pole was withdrawed from the spread groove voluntarily, cancelled the drive shaft and was connected of rotation axis, made things convenient for the dismouting motor.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims

1. A heat dissipating brushless DC motor housing, comprising a housing (1) and a rear cover (2), wherein a stator, a rotor and a drive shaft (3) are installed inside the housing (1), and characterized in that: a fan blade (4) is fixedly connected to one end of the drive shaft (3) located inside the housing (1), a plurality of vents (6) are provided on the surface of the rear cover (2), a flow guide component (5) is installed on the surface of the drive shaft (3), the flow guide component (5) comprises a cavity (51), a plurality of groups of air outlet holes (52) and an air inlet (53), the cavity (51) is provided inside the drive shaft (3), the air outlet holes (52) are equidistantly provided on the surface of the drive shaft (3), and the air inlet (53) is provided on the surface of the drive shaft (3).

2. The heat-dissipating brushless DC motor housing according to claim 1, characterized in that each group of air outlet holes (52) is provided with four holes in a ring shape.

3. The heat dissipating brushless DC motor housing according to claim 1, characterized in that the guide assembly (5) further comprises a guide plate (54), and the guide plate (54) is fixedly mounted on the surface of the drive shaft (3).

4. The heat dissipating brushless DC motor housing according to claim 3, characterized in that the guide plate (54) is designed to be trumpet-shaped.

5. The heat-dissipating brushless DC motor housing according to claim 1, characterized in that a dustproof net (7) is fixedly connected to the interior of the vent (6).

6. The heat-dissipating brushless DC motor housing according to claim 1 is characterized in that a cleaning assembly (8) is installed on the surface of the rear cover (2), and the cleaning assembly (8) includes a rotating shaft (81), and the rotating shaft (81) is rotatably installed at the center of the rear cover (2), and one end of the rotating shaft (81) is in contact with the driving shaft (3).

7. The heat dissipating brushless DC motor housing according to claim 6, characterized in that: one end of the rotating shaft (81) is fixedly connected to a plurality of connecting columns (82), and the other end of the rotating shaft (81) is fixedly connected to a brush plate (84).

8. The heat dissipating brushless DC motor housing according to claim 6, characterized in that the cleaning component (8) further comprises a plurality of connecting grooves (83), and the connecting grooves (83) are provided at one end of the driving shaft (3).

9. The heat dissipating brushless DC motor housing according to claim 1, characterized in that a plurality of heat dissipating fins (9) are fixedly mounted on the outer wall of the housing (1).

10. The heat dissipating brushless DC motor housing according to claim 1, characterized in that a rain shield (10) is fixedly connected to the surface of the rear cover (2).