JP3241897U - Low vibration, low noise, high speed brushless motor - Google Patents

Abstract

A low-vibration, low-noise, high-speed brushless motor. A duct blade (302) is installed inside a motor shell (301) to form a first storage space, a ball bearing (203) is installed, a second storage space is formed in the ball bearing, and an O-shaped ring (303) is provided. is attached. A winding 104 is mounted on the stator core 101 . Contact pins 103 are inserted into the outer periphery of the stator core. A circuit board 105 is attached to the end surface of the motor shell, and a terminal base 106 is attached to the upper end. Magnetic steel 202 is inserted inside the stator core. One end of the motor rotating shaft 201 is connected to the magnetic steel, the other end of the motor rotating shaft is connected to the blade mounting part 304 after penetrating the ball bearing, and the fan 305 is mounted on the blade mounting part. The flexible contact between the O-ring and the motor shell eliminates vibration and noise caused by changes in the motor's rotation speed. [Selection drawing] Fig. 1

Description

This invention belongs to the technical field of DC brushless motors, and more particularly to a low-vibration, low-noise, high-speed brushless motor.

A DC brushless motor consists of a motor body and a driving device, and is a kind of commonly used mechanical-electrical integration products. A brushless motor refers to a motor that does not have brushes and a commutator (or collector ring), and is also called a commutatorless motor.

When the conventional DC brushless motor starts and stops or rotates at a predetermined rotational speed (second high speed), it may generate start-stop noise and high-frequency noise. Compared to when the brushless motor rotates at high speed, when the rotation speed of the brushless motor changes from the second high speed to the predetermined rotation speed, there is a risk of severe vibration. Therefore, it is necessary to invent a low-vibration, low-noise, high-speed brushless motor.

The purpose of this invention is to solve the problems of the prior art by providing a high speed brushless motor with low vibration and low noise.

A low-vibration, low-noise, high-speed brushless motor according to an embodiment of the present invention includes a motor shell, a stator core, contact pins, a circuit board, magnetic steel and a motor rotating shaft,
A duct blade is installed in an inclined direction inside the motor shell, a first storage space is formed in the motor shell, a ball bearing is installed in the first storage space, and the ball bearing contains forming a second storage space, wherein an O-ring is mounted in the second storage space;
A winding is mounted on the stator core,
The contact pin is inserted so as to be positioned on the outer periphery of the stator core,
The circuit board is attached to the end surface of the motor shell, and a terminal base is attached to the upper end of the circuit board,
The magnetic steel is inserted inside the stator core,
One end of the motor shaft is connected to magnetic steel, the other end of the motor shaft passes through a ball bearing and is connected to a blade mounting part, and a fan is mounted on the blade mounting part.

The number of ball bearings is two.

The O-ring is mounted on the outside of the ball bearing.

The low-vibration, low-noise, high-speed brushless motor further includes a coil frame, and the stator core is mounted on the coil frame.

A third receiving space is formed in the motor shell, and the motor is installed in the third receiving space.

When compared with the prior art, the matter of this invention can produce the effects of the invention described below.
In the low-vibration, low-noise, high-speed brushless motor of this invention, the first housing space and the second housing space are appropriately formed, and the ball bearing and O-ring are installed, so that the motor rotating shaft and the motor shell have a stable structure. can be configured. A ball bearing and an O-ring are attached to the front and rear of the motor rotation shaft, respectively, so that a stable structure can be constructed on both sides of the motor rotation shaft. The flexible contact between the O-ring and the motor shell can eliminate vibrations and noises formed when the motor's rotational speed changes.

1 is a schematic diagram of the structure of the low-vibration, low-noise, high-speed brushless motor of the present invention; FIG. 1 is a cross-sectional view showing the structure of the low-vibration, low-noise, high-speed brushless motor of the present invention; FIG. FIG. 4 is a structural diagram of a first storage space, a second storage space and a third storage space of the low-vibration, low-noise high-speed brushless motor of the present invention; FIG. 2 is a side view of the duct blade structure of the low-vibration, low-noise, high-speed brushless motor of the present invention; 1 is a perspective view of a duct blade structure of the low-vibration, low-noise, high-speed brushless motor of the present invention; FIG.

In order to explain the purpose, technical matters, and effects of the invention in more detail, the following will explain in more detail the matters related to the embodiments of the invention with reference to the drawings and examples. It should be noted that the following specific examples are intended to illustrate the invention, but not to limit it.

Hereinafter, the low-vibration, low-noise, high-speed brushless motor according to the embodiments of the present invention will be described in detail with reference to specific embodiments.

As shown in FIGS. 1 to 5, the low-vibration, low-noise high-speed brushless motor according to the embodiment of the present invention includes a motor shell 301, a stator core 101, contact pins ( contact pin 103 , circuit board 105 , magnetic steel 202 and motor rotating shaft 201 .

A duct blade 302 is installed inside the motor shell 301 in an inclined direction, a first storage space 401 is formed in the motor shell 301, and a ball bearing ( ball bearing) 203 is installed, a second storage space 402 is formed in the ball bearing 203, an O-shaped ring 303 is installed in the second storage space 402,
A winding 104 is mounted on the stator core 101,
The contact pin 103 is inserted so as to be positioned on the outer circumference of the stator core 101,
The circuit board 105 is attached to the end face of the motor shell 301, the terminal base 106 is attached to the upper end of the circuit board 105,
The magnetic steel 202 is inserted inside the stator core 101,
One end of the motor rotating shaft 201 is connected to the magnetic steel 202, the other end of the motor rotating shaft 201 passes through the ball bearing 203 and is connected to the blade mounting part 304, and the fan 305 is mounted on the blade mounting part 304. It is attached.

In an embodiment of the present invention, a fan 305 is mounted on the blade mounting portion 304, and the blade mounting portion 304 is driven by the motor rotating shaft 201 to rotate, thereby driving the fan 305 to rotate at high speed. preferable. The duct blades 302 are installed in an inclined direction, and the air volume can be increased by the duct blades 302 and the side fan 305 rotating at high speed. By appropriately forming the first receiving space 401 and the second receiving space 402, and installing the ball bearing 203 and the O-shaped ring 303, the motor rotating shaft 201 and the motor shell 301 can form a stable structure. . A ball bearing 203 and an O-ring 303 are attached to the front and rear of the motor rotating shaft 201, respectively, so that a stable structure can be constructed on both sides of the motor rotating shaft 201. FIG. The flexible contact between the O-ring 303 and the motor shell 301 can eliminate the vibration and noise generated when the rotation speed of the motor changes.

As shown in FIGS. 1 and 2, the number of ball bearings 203 is two.

In an embodiment of the present invention, the other end of the motor rotating shaft 201 preferably passes through two ball bearings 203 and is connected to the rear blade mounting part 304 .

As shown in FIGS. 1 and 2, the O-ring 303 is preferably mounted outside the ball bearing 203 in the preferred embodiment of the present invention.

In the embodiment of this invention, it is preferable that the O-ring 303 and the motor shell 301 are in flexible contact to eliminate the vibration and noise generated when the rotation speed of the motor changes.

As shown in FIG. 1 , in a preferred embodiment of the present invention, the low-vibration, low-noise, high-speed brushless motor further includes a coil frame 102 , and the stator core 101 is mounted on the coil frame 102 .

In an embodiment of the present invention, a mounting position is formed within the coil frame 102, and the winding 104 is preferably mounted within the mounting position.

As shown in FIG. 3 , in the preferred embodiment of the present invention, the motor shell 301 defines a third receiving space 403 , and the motor is preferably installed in the third receiving space 403 .

In an embodiment of the present invention, the third receiving space 403 is preferably formed on one side of the first receiving space 401 .

In the low-vibration, low-noise high-speed brushless motor of this invention, the first housing space 401 and the second housing space 402 are properly formed, and the ball bearing 203 and the O-shaped ring 303 are installed so that the motor rotating shaft 201 and the motor Shell 301 can constitute a stable structure. A ball bearing 203 and an O-shaped ring 303 are installed on the front and rear sides of the motor rotating shaft 201, respectively, so that a stable structure can be constructed on both sides of the motor rotating shaft 201. FIG. The flexible contact between the O-ring 303 and the motor shell 301 can eliminate the vibration and noise generated when the rotation speed of the motor changes.

Although the embodiments of this invention have been described above, the embodiments are only examples of this invention, and this invention is not limited to the configurations of the above embodiments. Persons skilled in this technical field can make design changes, improvements, substitutions and modifications to the above-described embodiments without departing from the scope of the invention, and such design changes, improvements, substitutions and modifications are possible. Even if there is, it is natural that it is included in the range defined by the utility model registration claim of this device.

REFERENCE SIGNS LIST 101 stator core 102 coil frame 103 contact pin 104 winding 105 circuit board 106 terminal base 201 motor rotating shaft 202 magnetic steel 203 ball bearing 301 motor shell 302 duct blade 303 O-shaped ring 304 blade mounting portion 305 fan 401 first storage space 402 second Storage space 403 Third storage space

Claims (5)

Including motor shell, stator core, contact pin, circuit board, magnetic steel and motor rotating shaft,
A duct blade is installed in an inclined direction inside the motor shell, a first storage space is formed in the motor shell, a ball bearing is installed in the first storage space, and the ball bearing contains forming a second storage space, wherein an O-ring is mounted in the second storage space;
A winding is mounted on the stator core,
The contact pin is inserted so as to be positioned on the outer periphery of the stator core,
The circuit board is attached to the end surface of the motor shell, and a terminal base is attached to the upper end of the circuit board,
The magnetic steel is inserted inside the stator core,
One end of the motor rotating shaft is connected to magnetic steel, the other end of the motor rotating shaft passes through a ball bearing and is connected to a blade mounting part, and a fan is mounted on the blade mounting part. Low vibration, low noise, high speed brushless motor. 2. The low-vibration, low-noise, high-speed brushless motor of claim 1, wherein the number of said ball bearings is two. 3. The low-vibration, low-noise, high-speed brushless motor of claim 2, wherein the O-ring is mounted outside the ball bearing. The low-vibration, low-noise, high-speed brushless motor of claim 1, further comprising a coil frame, and wherein the stator core is mounted on the coil frame. 2. The low-vibration, low-noise, high-speed brushless motor of claim 1, wherein a third receiving space is formed in the motor shell, and the motor is installed in the third receiving space.

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