CN219678244U - High-speed section of thick bamboo brushless motor that bloies - Google Patents

Abstract

The utility model discloses a high-speed blowing cylinder brushless motor, which comprises a motor shell, a motor main body and fan blades, wherein the motor main body comprises a motor stator and a motor rotor, and the motor rotor comprises a rotor mandrel and a cylindrical magnet; the motor shell comprises a shell outer cylinder and a shell inner cylinder; the motor stator is arranged in the shell inner cylinder, and the front end part of the rotor mandrel is fixedly connected with the fan blades; the front end part of the shell inner cylinder body is provided with a front bearing seat, and the front end part of the rotor mandrel is rotatably arranged on the front bearing seat through a front end bearing; the rear end part of the shell inner cylinder body is sleeved and fastened with a rear bearing seat, and the rear end part of the rotor mandrel is rotatably arranged on the rear bearing seat through a rear end bearing; the motor stator clamping limit is positioned between a stator shoulder of the shell inner barrel and the rear bearing seat; compression springs are respectively arranged between the front end bearing and the cylindrical magnet and between the rear end bearing and the cylindrical magnet. Through the structural design, the utility model has the advantages of novel structural design, simplicity and convenience in assembly, stability and high reliability.

Description

High-speed section of thick bamboo brushless motor that bloies

Technical Field

The utility model relates to the technical field of high-speed blowing cylinders, in particular to a brushless motor of a high-speed blowing cylinder.

Background

As a widely used home appliance, a blowing drum is widely used in daily life, and various types of blowing drum products exist in the prior art.

The patent number is: ZL202222164030.9, patent name: the utility model relates to a Chinese patent of a high-speed blower brushless motor, which comprises a motor, an air channel and fan blades, wherein the air channel is vertically sleeved at the upper end of the motor, the top of the motor penetrates through the top of the air channel, the fan blades are horizontally sleeved at the top of the air channel, and the bottom of the fan blades is connected with the top of the motor; further, as is apparent from fig. 2 of the above patent, the spindle of the rotor portion of the motor is mounted by two bearings, a front bearing and a rear bearing.

It should be noted that, for the high-speed blower brushless motor described above, it has the following drawbacks, in particular:

the defect 1 is that the front end part of the motor is directly sleeved and blocked in the air duct, and in order to ensure the installation stability of the motor, the motor is sleeved in the air duct in a tight fit mode, and the installation process is time-consuming and labor-consuming;

and 2, due to the lack of an elastic buffer structure, when the fan blades rotate positively and negatively and generate positive and negative thrust, the fan blades can enable the spindle of the rotor to move, so that the stability and the reliability are poor.

Disclosure of Invention

The utility model aims to provide a high-speed blowing cylinder brushless motor aiming at the defects of the prior art, and the high-speed blowing cylinder brushless motor has novel structural design, simple and convenient assembly and high stability and reliability.

In order to achieve the above object, the present utility model is achieved by the following technical scheme.

The high-speed blowing cylinder brushless motor comprises a motor shell, a motor main body and fan blades, wherein the motor main body comprises a motor stator and a motor rotor rotatably arranged in the motor stator, and the motor rotor comprises a rotor mandrel and cylindrical magnets sleeved and fastened on the periphery of the rotor mandrel;

the motor shell comprises a shell outer cylinder body and a shell inner cylinder body which is positioned in the shell outer cylinder body and is arranged at intervals with the shell outer cylinder body, and a shell air channel is formed between the shell outer cylinder body and the shell inner cylinder body; the motor stator is arranged on the shell inner cylinder, the front end part of the rotor mandrel extends to the front end side of the shell inner cylinder, and the front end part of the rotor mandrel is fixedly connected with the fan blades;

the front end part of the shell inner cylinder body is provided with a front bearing seat which is integrated with the shell inner cylinder body into a whole, and the front end part of the rotor mandrel is rotatably arranged on the front bearing seat through a front end bearing;

the rear end part of the shell inner cylinder body is sleeved and fastened with a rear bearing seat, and the rear end part of the rotor mandrel is rotatably arranged on the rear bearing seat through a rear end bearing; the inner wall of the front end part of the shell inner cylinder body is provided with a stator blocking shoulder, and a motor stator is clamped and limited between the stator blocking shoulder and the rear bearing seat;

a front end compression spring sleeved on the periphery of the rotor mandrel is arranged between the front end bearing and the cylindrical magnet, and a rear end compression spring sleeved on the periphery of the rotor mandrel is arranged between the rear end bearing and the cylindrical magnet.

The rear bearing seat is provided with a plurality of rear vent holes which respectively and completely penetrate from front to back, and the front end part of the shell inner cylinder body is provided with a plurality of front vent holes which respectively and completely penetrate from front to back at the front end bearing and the stator shoulder.

The motor stator is characterized in that a plurality of stator grooves which completely penetrate from front to back are formed in the outer surface of the motor stator, and a clearance air channel is formed between the motor stator and the inner wall of the shell inner barrel at the positions of the stator grooves.

The front end part of the rotor mandrel is sleeved with a front end gasket positioned between the front end bearing and the front end compression spring, the front end part of the front end compression spring is abutted with the front end gasket, and the front end gasket is abutted and limited on the front end bearing;

the rear end part of the rotor mandrel is sleeved with a rear end gasket positioned between the rear end bearing and the rear end compression spring, the rear end part of the rear end compression spring is abutted with the rear end gasket, and the rear end gasket is abutted and limited on the rear end bearing.

Wherein, the outer wall of the outer shell body is provided with a plurality of outer shell body grooves which linearly extend from front to back.

The shell outer cylinder body and the shell inner cylinder body are provided with a plurality of guide vanes, and the shell outer cylinder body, the shell inner cylinder body and the guide vanes are of an integrated structure.

Wherein, the back bearing seat is provided with a PCB board, and the PCB board is fixedly welded with an opposite-plug connector;

the coil winding of motor stator passes through metal PIN needle and PCB board electric connection, and metal PIN needle welds in the PCB board, and metal PIN needle passes through the internal circuit of PCB board and to inserting connector electric connection.

Wherein, the winding frame of the motor stator is provided with four metal PIN needles, the motor stator is provided with four pairs of magnetic poles, and each metal PIN needle is welded with the PCB respectively;

the four metal PIN needles are designed in a three-long and one-short way, one end part of the corresponding coil winding of each pair of magnetic poles is respectively and electrically connected with the short metal PIN needle, and the other end part of the corresponding coil winding of each pair of magnetic poles is respectively and electrically connected with the corresponding long metal PIN needle

The rear bearing seat is further provided with a conductive insulating sheet positioned on the front side of the PCB, and the conductive insulating sheet is positioned between the PCB and the rear end bearing.

Compared with the prior art, the utility model has the following beneficial effects:

1. in the process of mounting the motor main body, the motor main body is embedded into the inner cylinder body of the shell, then the rear bearing seat is sleeved and fastened on the rear end part of the inner cylinder body of the shell, and at the moment, the motor stator part of the motor main body is matched with the rear bearing seat through the stator shoulder of the inner cylinder body of the shell to be clamped and fixed, so that the mounting is simple and convenient;

2. for the spring combined structure consisting of the front end compression spring and the rear end compression spring, the combined structure can form spring pre-pressing acting force on the front side and the rear side of the cylindrical magnet, and when the fan blades rotate positively and negatively and generate positive and negative thrust, the spring pre-pressing acting force can effectively reduce the axial movement of the rotor mandrel, so that noise generated by movement can be effectively reduced, and the stability and the reliability are better.

Drawings

The utility model will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the utility model.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a schematic structural view of another view of the present utility model.

Fig. 4 is an exploded view of fig. 3.

Fig. 5 is a schematic cross-sectional view of the present utility model.

Fig. 6 is a schematic structural view of the motor housing of the present utility model.

Fig. 7 is a schematic structural view of the rear bearing housing of the present utility model.

Fig. 1 to 7 include:

1-a motor housing; 11-an outer shell body; 111-an outer barrel groove; 12-a shell inner cylinder; 121-front bearing block; 122-stator shoulder; 123-front vent; 13-a shell air duct; 14-a deflector; 2-a motor body; 21-a motor stator; 211-stator grooves; 22-motor rotor; 221-rotor spindle; 222-a cylindrical magnet; 3-fan blades; 41-front end bearing; 42-rear end bearing; 5-a rear bearing seat; 51-a rear vent; 61-front end compression spring; 62-a rear end compression spring; 71-front end gasket; 72-a back end gasket; 81-a PCB board; 82-a mating connector; 83-metal PIN needle; 9-conductive insulating sheets.

Detailed Description

The utility model will be described with reference to specific embodiments.

In a first embodiment, as shown in fig. 1 to 5, a high-speed blowing-drum brushless motor includes a motor housing 1, a motor main body 2, and fan blades 3, wherein the motor main body 2 includes a motor stator 21, and a motor rotor 22 rotatably mounted in the motor stator 21, and the motor rotor 22 includes a rotor spindle 221 and a cylindrical magnet 222 sleeved and fastened on the periphery of the rotor spindle 221.

As shown in fig. 1 to 6, the motor housing 1 includes a housing outer cylinder 11, a housing inner cylinder 12 located inside the housing outer cylinder 11 and spaced from the housing outer cylinder 11, and a housing air duct 13 formed between the housing outer cylinder 11 and the housing inner cylinder 12; the motor stator 21 is mounted on the housing inner cylinder 12, the front end portion of the rotor spindle 221 extends to the front end side of the housing inner cylinder 12, and the front end portion of the rotor spindle 221 is fixedly connected to the fan blade 3.

Further, as shown in fig. 5, a front bearing block 121 integrally formed with the housing inner cylinder 12 is provided at the front end portion of the housing inner cylinder 12, and the front end portion of the rotor spindle 221 is rotatably mounted to the front bearing block 121 via a front end bearing 41.

Further, as shown in fig. 1 to 7, the rear end portion of the housing inner cylinder 12 is fitted with a rear bearing housing 5, and the rear end portion of the rotor spindle 221 is rotatably mounted to the rear bearing housing 5 via a rear end bearing 42; the inner wall of the front end part of the shell inner cylinder body 12 is provided with a stator blocking shoulder 122, and the motor stator 21 is clamped and limited between the stator blocking shoulder 122 and the rear bearing seat 5.

As shown in fig. 2, 4 and 5, a front compression spring 61 fitted around the rotor spindle 221 is provided between the front bearing 41 and the cylindrical magnet 222, and a rear compression spring 62 fitted around the rotor spindle 221 is provided between the rear bearing 42 and the cylindrical magnet 222.

When the high-speed blowing-cylinder brushless motor of the first embodiment works, after the coil windings of the motor stator 21 are electrified, magnetic field acting force is generated, and the magnetic field acting force acts on the cylindrical magnet 222 of the motor rotor 22, so that the cylindrical magnet 222 rotates, the rotating cylindrical magnet 222 drives the rotor core shaft 221 to rotate, the rotating rotor core shaft 221 drives the fan blades 3 to rotate, and the rotating fan blades 3 drive airflow to flow and enable the airflow to flow through the housing air duct 13 between the housing outer cylinder 11 and the housing inner cylinder 12.

It should be noted that, for the high-speed blowing barrel brushless motor of the first embodiment, during the installation of the motor main body 2, the motor main body 2 is first embedded into the housing inner barrel 12, and then the rear bearing seat 5 is fastened to the rear end of the housing inner barrel 12 in a sleeved manner, and at this time, the motor stator 21 of the motor main body 2 is engaged with the rear bearing seat 5 through the stator shoulder 122 of the housing inner barrel 12 for clamping and fixing. For the mode that the motor main body 2 in the prior art is directly sleeved and clamped on the shell inner barrel 12, in order to ensure the installation stability of the motor main body 2, the motor main body 2 is sleeved on the inner side of the shell inner barrel 12 in a tight fit mode, and the installation process is time-consuming and labor-consuming; for the clamping mode of the motor main body 2 of the first embodiment, the motor main body has the advantage of simple and convenient installation.

Further, in the first embodiment, the tip compression spring 61 has a tip portion that abuts against the inner ring of the tip bearing 41 and a rear end portion that abuts against the tip surface of the cylindrical magnet 222; the rear end compression spring 62 of the first embodiment may have a front end portion that abuts against the rear end surface of the cylindrical magnet 222 and a rear end portion that abuts against the inner ring of the rear end bearing 42. For the front end compression spring 61 and the rear end compression spring 62, the combined structure can form spring pre-pressing force on the front side and the rear side of the cylindrical magnet 222, and under the action of forward and reverse rotation of the fan blade 3 and forward and reverse pushing force and magnetic pulling force, the spring pre-pressing force can effectively reduce the axial movement of the rotor mandrel 221, so that noise generated by movement can be effectively reduced, and the stability and the reliability are better.

According to the above-mentioned circumstances, through the above-mentioned structural design, the high-speed blowing barrel brushless motor of this embodiment one has structural design novel, assembly simple and convenient, advantage that stable reliability is high.

As shown in fig. 2, 4, 5, 6 and 7, the second embodiment is different from the first embodiment in that: the rear bearing housing 5 is provided with a plurality of rear vent holes 51 which extend completely from front to rear, and the front end of the housing inner cylinder 12 is provided with a plurality of front vent holes 123 which extend completely from front to rear at the front end bearing 41 and the stator shoulder 122.

In the process of driving airflow to flow by the rotating fan blades 3, the ventilation hole structure formed by the rear ventilation hole 51 of the rear bearing seat 5 and the front ventilation hole 123 of the shell inner cylinder 12 can enable the airflow to pass through the motor main body 2, and the airflow passing through the motor main body 2 can accelerate heat dissipation of the motor main body 2, so that the heat dissipation effect of the motor main body 2 is improved and the service life of the motor main body is prolonged.

As shown in fig. 2, 4 and 6, the third embodiment is different from the second embodiment in that: the outer surface of the motor stator 21 is provided with a plurality of stator grooves 211 which completely penetrate from front to back respectively, and a clearance air duct is formed between the motor stator 21 and the inner wall of the shell inner cylinder 12 at the position of each stator groove 211 respectively.

With the above-described gap duct structure formed by the stator grooves 211, it is possible to further improve the ventilation and heat dissipation effects of the motor main body 2.

Specifically, the outer surface of the motor stator 21 of the third embodiment is provided with three stator grooves 211 distributed in an annular array, and the three stator grooves 211 can be designed to be two-size to realize misplacement positioning during assembly.

In the fourth embodiment, as shown in fig. 5, the fifth embodiment is different from the first embodiment in that: the front end portion of the rotor spindle 221 is fitted with a front end spacer 71 between the front end bearing 41 and the front end compression spring 61, the front end portion of the front end compression spring 61 abuts against the front end spacer 71, and the front end spacer 71 abuts against the front end bearing 41. Similarly, the rear end portion of the rotor spindle 221 is fitted with a rear end spacer 72 between the rear end bearing 42 and the rear end compression spring 62, the rear end portion of the rear end compression spring 62 abuts against the rear end spacer 72, and the rear end spacer 72 abuts against and is restrained at the rear end bearing 42.

As for the front-end washer 71, it is possible to avoid the front-end compression spring 61 from directly contacting and pressing against the inner ring of the front-end bearing 41; for the rear end spacer 72, it can be avoided that the rear end compression spring 62 directly contacts and presses against the inner race of the rear end bearing 42.

As shown in fig. 1 to 4, the fifth embodiment is different from the first embodiment in that: the outer wall of the outer shell 11 is provided with a plurality of outer shell grooves 111 extending straight from front to back.

The outer cylinder groove 111 formed in the outer wall of the outer cylinder 11 has the following two functions:

the action 1, the above-mentioned outer cylinder groove 111 can play a role of anti-slip, when the high-speed blowing cylinder brushless motor of the fifth embodiment is mounted on the blowing cylinder housing, the above-mentioned anti-slip groove can play a role of anti-slip, so as to improve the mounting stability of the high-speed blowing cylinder brushless motor of the fifth embodiment;

the action 2 and the outer cylinder groove 111 can further increase the heat dissipation area of the outer cylinder 11 of the housing, so as to improve the overall heat dissipation effect of the high-speed blower brushless motor of the fifth embodiment.

As shown in fig. 1 to 6, the sixth embodiment is different from the first embodiment in that: a plurality of guide vanes 14 are arranged between the outer shell barrel 11 and the inner shell barrel 12, and the outer shell barrel 11, the inner shell barrel 12 and the guide vanes 14 are of an integrated structure.

Embodiment seven, as shown in fig. 1 to 5, is different from embodiment one in that: the rear bearing seat 5 is provided with a PCB 81, and the PCB 81 is fixedly welded with an opposite-plug connector 82; the coil winding of the motor stator 21 is electrically connected with the PCB board 81 through the metal PIN 83, and the metal PIN 83 is welded on the PCB board 81, and the metal PIN 83 is electrically connected with the opposite connector 82 through the internal circuit of the PCB board 81.

It should be explained that the metal PIN 83 may be directly inserted into the bobbin structure of the motor stator 21, the coil winding is wound on the bobbin, and the end of the enameled wire of the coil winding is connected to the metal PIN 83 and electrically connected.

Also, the brushless motor of the high-speed blowing drum of the seventh embodiment can be quickly connected to the controller of the high-speed blowing drum by the interposition of the connector 82.

Embodiment eight, the difference between this embodiment eight and embodiment seven is: four metal PIN needles 83 are provided on the bobbin of the motor stator 21, and the motor stator 21 has four pairs of poles, and each metal PIN needle 83 is welded with the PCB board 81, respectively.

The four metal PIN needles 83 are designed to be three long and one short, and one end part of the coil winding corresponding to each pair of magnetic poles is respectively and electrically connected with the short metal PIN needles 83, namely the short metal PIN needles 83 are used as collinear PIN needles; the other ends of the corresponding coil windings of each pair of poles are electrically connected to corresponding long metal PIN needles 83, respectively.

Through above-mentioned design, the eighth end of a thread quantity when reducing coil winding wire winding of this embodiment, and can make the wire winding mode more simple swift to and have wire winding efficiency height, PIN needle outlet hole few, save space's advantage.

As shown in fig. 2, 4 and 5, the difference between the present embodiment nine and the embodiment seven is that: the rear bearing housing 5 is further provided with a conductive insulating sheet 9 located on the front side of the PCB board 81, and the conductive insulating sheet 9 is located between the PCB board 81 and the rear end bearing 42.

As for the conductive insulating sheet 9 of the eighth embodiment, it is located between the motor main body 2 and the PCB board 81, i.e., the conductive insulating sheet 9 can function as an insulating space between the motor main body 2 and the PCB board 81.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims (9)

1. The utility model provides a high-speed section of thick bamboo brushless motor that bloies, includes motor housing (1), motor main part (2), flabellum (3), and motor main part (2) are including motor stator (21), rotate install in motor rotor (22) inside motor stator (21), and motor rotor (22) are including rotor dabber (221), suit fastening in rotor dabber (221) peripheral cylinder magnetite (222);

the motor shell (1) comprises a shell outer cylinder (11) and a shell inner cylinder (12) which is positioned inside the shell outer cylinder (11) and is arranged at intervals with the shell outer cylinder (11), and a shell air channel (13) is formed between the shell outer cylinder (11) and the shell inner cylinder (12); the motor stator (21) is arranged on the shell inner cylinder body (12), the front end part of the rotor mandrel (221) extends to the front end side of the shell inner cylinder body (12), and the front end part of the rotor mandrel (221) is fixedly connected with the fan blades (3);

the front end part of the shell inner cylinder body (12) is provided with a front bearing seat (121) which is integrated with the shell inner cylinder body (12), and the front end part of the rotor mandrel (221) is rotatably arranged on the front bearing seat (121) through a front end bearing (41);

the method is characterized in that: the rear end part of the shell inner cylinder body (12) is sleeved and fastened with a rear bearing seat (5), and the rear end part of the rotor mandrel (221) is rotatably arranged on the rear bearing seat (5) through a rear end bearing (42); the inner wall of the front end part of the shell inner cylinder body (12) is provided with a stator shoulder (122), and the motor stator (21) is clamped and limited between the stator shoulder (122) and the rear bearing seat (5);

a front end compression spring (61) sleeved on the periphery of the rotor mandrel (221) is arranged between the front end bearing (41) and the cylindrical magnet (222), and a rear end compression spring (62) sleeved on the periphery of the rotor mandrel (221) is arranged between the rear end bearing (42) and the cylindrical magnet (222).

2. A high-speed blowing cartridge brushless motor as claimed in claim 1, wherein: the rear bearing seat (5) is provided with a plurality of rear vent holes (51) which respectively and completely penetrate from front to back, and the front end part of the shell inner cylinder body (12) is provided with a plurality of front vent holes (123) which respectively and completely penetrate from front to back at the front end bearing (41) and the stator shoulder (122).

3. A high-speed blowing cartridge brushless motor as claimed in claim 2, wherein: a plurality of stator grooves (211) which penetrate through the motor stator (21) completely from front to back are formed in the outer surface of the motor stator (21), and clearance air channels are formed between the motor stator (21) and the inner wall of the shell inner cylinder (12) at the positions of the stator grooves (211) respectively.

4. A high-speed blowing cartridge brushless motor as claimed in claim 1, wherein: the front end part of the rotor mandrel (221) is sleeved with a front end gasket (71) positioned between the front end bearing (41) and the front end compression spring (61), the front end part of the front end compression spring (61) is abutted with the front end gasket (71), and the front end gasket (71) is abutted and limited on the front end bearing (41);

the rear end part of the rotor mandrel (221) is sleeved with a rear end gasket (72) positioned between the rear end bearing (42) and the rear end compression spring (62), the rear end part of the rear end compression spring (62) is abutted with the rear end gasket (72), and the rear end gasket (72) is abutted and limited on the rear end bearing (42).

5. A high-speed blowing cartridge brushless motor as claimed in claim 1, wherein: the outer wall of the outer shell body (11) is provided with a plurality of outer shell body grooves (111) which extend from front to back in a straight line.

6. A high-speed blowing cartridge brushless motor as claimed in claim 1, wherein: a plurality of guide vanes (14) are arranged between the outer shell cylinder (11) and the inner shell cylinder (12), and the outer shell cylinder (11), the inner shell cylinder (12) and the guide vanes (14) are of an integrated structure.

7. A high-speed blowing cartridge brushless motor as claimed in claim 1, wherein: the rear bearing seat (5) is provided with a PCB (81), and the PCB (81) is fixedly welded with an opposite-plug connector (82);

the coil winding of the motor stator (21) is electrically connected with the PCB (81) through a metal PIN needle (83), the metal PIN needle (83) is welded on the PCB (81), and the metal PIN needle (83) is electrically connected with the opposite-plug connector (82) through an internal circuit of the PCB (81).

8. A high-speed blowing cartridge brushless motor as defined in claim 7, wherein: four metal PIN needles (83) are arranged on a winding frame of the motor stator (21), the motor stator (21) is provided with four pairs of magnetic poles, and each metal PIN needle (83) is welded with the PCB (81) respectively;

the four metal PIN needles (83) are designed to be three long and one short, one end part of the coil winding corresponding to each pair of magnetic poles is respectively and electrically connected with the short metal PIN needles (83), and the other end part of the coil winding corresponding to each pair of magnetic poles is respectively and electrically connected with the corresponding long metal PIN needles (83).

9. A high-speed blowing cartridge brushless motor as defined in claim 7, wherein: the rear bearing seat (5) is also provided with a conductive insulating sheet (9) positioned at the front side of the PCB (81), and the conductive insulating sheet (9) is positioned between the PCB (81) and the rear end bearing (42).