KR100906740B1 - Blushless direct current motor - Google Patents

Abstract

The present invention relates to a BCD motor assembly, by coupling the rotor to the outside of the stator of the BCD motor and coupling the fan to the rotor, the coupling operation of the motor is easier, and vibration and noise are reduced as well as the motor. It reduces the size and improves the performance and efficiency of the BCD motor.

To this end, the BCD motor 100 of the present invention is formed in the upper case 110 having an air inlet 111, the lower case 120 having an air outlet 121, and formed in the lower case 120. A bushing 160 in which the shaft 130 is rotatably installed and a coupling groove 123 to which the PCB 162 is coupled to an outer circumferential surface thereof, and a bearing 161 coupled to the coupling groove 123, is installed. The stator 140 coupled to the coupling groove 123 generates an electromagnetic force, and the turbo fan is coupled to the upper end of the shaft 130 to suck and discharge air while rotating by interaction with the electromagnetic force of the stator 140. It consists of a rotating member 150 consisting of 151 and the magnet 152 and the yoke 153.

BCD motor, shaft, stator, turbo fan, magnet, yoke, rotating member

Description

BLUSHLESS DIRECT CURRENT MOTOR}

The present invention relates to a BCD motor assembly, and more particularly, to simplify the structure of a BCD motor, thereby facilitating the assembly and assembly of the motor, as well as reducing vibration and noise of the BCD motor. The present invention relates to a BLC motor to improve the performance and efficiency of a BLC motor.

In general, BLUSH LESS DIRECT CURRENT (BLDC) MOTOR is a brushless motor in DC motor. The BLDC motor is semi-permanent because it does not need to use brush as it controls the current through semiconductor elements. High torque is possible because of the relatively high torque, and it is easy to control the current in the motor drive circuit.

However, in the general BCD motor, since the motor and the fan are separated, the fan and the fan must be coupled to the shaft of the motor, so that the motor and the fan are coupled to the shaft because of the coupling of the BCD motor. And there was a problem that the workability due to the assembly work is lowered.

Since the motor and the fan are separated and the motor and the fan are axially coupled, there is a limit in reducing the BLC motor by the motor and the fan. There were also problems that were difficult to produce.

In addition, since the fan is axially coupled to the shaft of the motor, when the fan is not balanced when the fan is rotated by the driving force, that is, the rotational force of the motor, the fan is vibrated and rotated as the fan rotates. And not only noise is generated, there is also a problem that the workability is significantly reduced, such as a separate process for balancing the fan.

Not only this, the motor and fan may be damaged or damaged due to unbalance of the fan, as well as the fan may be separated from the motor due to long-term use and external shock, resulting in repair and replacement of the motor. There were also many problems.

On the other hand, due to the transmission of the rotational force of the motor to the fan shaft coupled to the motor through the shaft of the motor, the performance and efficiency of the BLC motor is also lowered as the rotational force of the motor is not completely transmitted to the fan. there was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to make it easier to combine and assemble the components of the BLC motor by changing and simplifying each structure of the BLC motor.

In addition, the present invention is to position the rotor outside the stator of the BCD motor and to couple the fan to the rotor so that the rotational force of the motor is transmitted to the fan as it is to improve the performance and efficiency of the BLC motor There is a purpose.

In addition, the present invention, as the fan is coupled to the rotor of the motor to reduce the vibration and noise generated in the BCD motor as well as to reduce the size of the BCD motor.

In order to achieve the above object, the present invention is a brushless BCD motor in the DC (DC) motor, as well as forming the upper side appearance of the BCD motor as well as to form the inside of the motor in a vacuum state An upper case having an air inlet, a lower case having an air discharge port to be coupled to the lower side of the upper case as well as forming an outer appearance of the lower side of the motor, and protruded to the inner side of the lower case so that the lower end of the shaft has an inner circumferential surface. A coupling groove portion rotatably installed and coupled to the outer circumferential surface of the PCB, a bushing coupled to the coupling groove to assist the rotation of the shaft, as well as preventing the flow of the shaft, and a bushing installed on the inner surface thereof, and above the PCB. Positioned as well as the stator is coupled to the outer peripheral surface of the coupling groove portion is generated an electromagnetic force, the upper, lower case In addition to being located inside the upper surface of the shaft coupled to the upper end of the shaft coupled to the upper end of the shaft to suck and discharge the outside air while being rotated with the shaft by the electromagnetic force of the stator There is formed a plurality of wings, as well as the bottom of the turbo fan to form an insertion groove, the magnet is inserted into the insertion groove of the turbo fan is a magnetic force is generated to rotate the turbo fan by interaction with the magnetic force of the stator and It is installed to surround the magnet, as well as inserted into the insertion groove portion is provided with a BCD motor, characterized in that consisting of a rotating member made of a yoke to prevent the magnetic force of the magnet to escape to the outside.

As described above, the present invention has a BCD motor for installing a rotating member provided with a stator and a turbo fan having a plurality of rotor blades in the case, the turbofan is formed integrally with the rotating member functioning as a rotor As a result, by simplifying the structure of the BCD motor, the coupling and assembling work between the components of the BCD motor is more easily and easily performed.

In addition, as the motor and the fan are integrally formed, the performance and efficiency of the BLC motor can be improved under the same conditions, and the size of the BLC motor can be reduced as well as the size desired by consumers and buyers under the same performance. It also works.

In addition, the problem of balance between the motor and the fan, that is, as the fan is integrally coupled to the rotor side of the motor, the balance between the motor and the fan is always in a separate state for balancing the fan. Not only does this need to be performed, but also prevents damage and breakage of the motor and fan due to unbalance of the fan, and enables the BCD motor to be used for a long time, as well as preventing the motor and the fan from being separated and generated by the motor and the fan. It also has the effect of reducing vibration and noise.

On the other hand, by installing a rotating member that is a rotor to the outside of the stator, the driving force, that is, the rotational force of the motor is transmitted to the fan as it is intake and discharge the air into the motor effect of improving the performance and efficiency of the BLC motor There is also.

By the above effects, the product of the present invention, that is, the BLC motor assembly of the present invention is very useful for real life and industrial use as well as to improve the consumer's reliability as well as the purchase motivation.

Hereinafter, a preferred embodiment according to the embodiment of the present invention configured as described above will be described in more detail with reference to FIGS. 1 to 5.

1 is a perspective view showing the structure of the present invention the BCD motor, Figure 2 is a perspective view showing the present invention the BCD motor from the bottom, Figure 3 is a cross-sectional view showing a cross-sectional view of the present invention the BCD motor, Figure 4 is an exploded perspective view showing each configuration of the BCD motor of the present invention in a separated state, Figure 5 is a cross-sectional view showing each configuration of the BCD motor of the present invention in a cross-sectional view.

The present invention is provided with a BLUSH LESS DIRECT CURRENT MOTOR 100 to suck and discharge external air by a power applied from the outside.

The BC motor 100 is provided with a case forming the exterior of the BC motor 100, the case is located on the upper side of the BC motor 100 is the interior of the BC motor 100 The upper case 110 is installed to form a vacuum state, and is located on the lower side of the BC motor 100, that is, the lower side of the upper case 110 to be coupled to and separated from the upper case 110 The lower case 120 is installed.

The upper case 110 and the lower case 120 are coupled and separated by hook fastening, that is, a plurality of hooks 112 are formed on the outer circumferential surface of the upper case 110, and the lower case 120 On the outer circumferential surface, a plurality of engaging jaw 122 is fastened to each of the hooks 112, respectively.

An air inlet 111 is formed in the upper case 110 to allow outside air to be sucked into the motor 100, and an air outlet for discharging air in the motor 100 to the lower case 120. 121 is formed.

On the outer surface of the lower case 120 in which the air discharge port 121 is positioned, a plurality of induction wings 124 for guiding the flow of the discharged air to facilitate the discharge of air to the outside of the motor 110. Is formed, and each of the guide vanes 124 is bent at a predetermined angle in the flow direction of the discharge air so as to smoothly flow the discharge air.

Each of the guide vanes 124 may be formed on the outer side of the outer surface of the lower case 120 in which the air outlet 121 is located, or may be formed on the inner side of the outer surface of the lower case 120 as shown in FIG. 2. It may be formed on either side as long as it guides the flow of discharge air more smoothly.

The inner side of the lower case 120 has a coupling groove 123 protruding toward the inner side of the motor (100).

The inner circumferential surface of the coupling groove 123 is rotatably installed a shaft 130 for rotating the fan of the motor 100 to be described later, that is, the lower end of the shaft 130 is inserted into the coupling groove 123 It is.

Here, the coupling groove 123 is inserted into the bushing 160 to prevent the flow of the shaft 130, as well as to couple and fix the shaft 130 to the lower case 120, the bushing ( A bearing 161 is provided between the inner surface of the 160 and the outer surface of the shaft 130 to allow the rotation of the shaft 130 to be more smoothly performed.

Washers to reduce friction in the upper and lower portions of the bushing 160 in contact with the shaft 130 and the upper and lower surfaces of the bushing 160 and the bushing 160 inserted into the bearing 161 in the bushing 160. (163, 164) are combined, respectively.

On the other hand, the outer peripheral surface of the coupling groove 123 is coupled to the PCB 162 is configured a circuit for driving the motor 100.

The stator 140 is coupled to an outer circumferential surface of the coupling groove 133, which is above the PCB 162, to generate an electromagnetic force in which the N pole and the S pole are changed while an electric current flows. The stator 140 is manufactured by winding a coil copper wire.

The upper and lower cases 110 and 120 are located inside the top of the shaft 130 and rotate together with the shaft 130 by the electromagnetic force of the stator 140 and the outside air to the motor 100 Rotating member 150 is coupled to the suction and discharge into).

3 to 5, the rotary member 150, the upper end of the shaft 130, the turbo fan to be rotated together with the shaft 130 to suck and discharge the outside air into the motor 100 151 is coupled.

The upper surface of the turbo fan 151 is provided with a plurality of rotary blades 154 to suck and discharge air by the rotating turbo fan 151, the lower surface of the turbo fan 151 ), An insertion groove 155 is formed to insert the yoke 153 and the magnet 152 to be described later.

In the insertion groove 155 of the turbo fan 151 is installed a magnet (permanent magnet, 152) is generated magnetic force to rotate the turbo fan 151 by interaction with the electromagnetic force of the stator 140 is inserted have.

In addition, the yoke 153 between the insertion groove 155 and the magnet 152 encloses the magnet 152 in the insertion groove 155 to prevent the magnetic force of the magnet 152 from escaping to the outside. Insertion is installed.

That is, the yoke 153 is inserted and coupled into the insertion groove 155 in a state in which the magnet 152 is wrapped, and the yoke 153 is made of iron, which is a metal material so that the magnetic force of the magnet 152 does not escape to the outside. Preference is given to using.

On the other hand, a rubber packing 170 surrounding the outer circumferential surface is coupled to the outer circumferential surface of the upper case 110 and the lower case 120 in contact with each other to block the vibration path of the motor 100.

In addition, a through hole 125 may be formed at the center lower surface of the lower case 120 to discharge foreign substances and bearing 161 oil from the motor 100 to the outside, and the motor 100 may be formed in the through hole 125. The stopper 126 for opening and closing the through hole 125 is coupled to prevent foreign matter and bearing 161 oil from being discharged and leaked to the outside.

The operation of the present invention configured as described above is as follows.

First, when external power is applied to the BCD motor 100, an electric force is generated while current flows through the stator 140 of the motor 100.

The electromagnetic force of the stator 140 interacts with the magnet 152 of the rotating member 150 to rotate the rotating member 150.

That is, the electromagnetic force generated by the current flowing through the stator 140 is frequently converted into the N pole and the S pole, and thus interacts with the magnetic force (N pole and the S pole) of the magnet 152, thereby causing the magnet 152 to operate. The rotating member 150 is rotated as the action of being pushed and pulled by the stator 140 alternately takes place.

In other words, if the stator 140 and the magnet 152 are the same poles, the stator 140 and the magnet 152 together with the magnet 152 are pushed from the stator 140 by a force to push each other. Are different poles, the magnet 152 is pulled to the stator 140 by the force to attract each other, this action is made alternately.

Therefore, as the magnet 152 is rotated by the above action, that is, the stator 140 and the magnet 152 are pushed and pulled together, the magnet 152 is coupled to the shaft 130 and the shaft is coupled to the rotation. Member 150 is rotated simultaneously with shaft 130.

Since a plurality of rotor blades 154 are formed on the upper surface of the turbo fan 151 of the rotating member 150 rotating by the interaction between the stator 140 and the magnet 152, the rotating turbo fan ( External air of the motor 100 is sucked into the motor 100 through the air inlet 111 of the upper case 110 by the rotational force of the rotary blade 154 of the 151.

The outside air sucked into the motor 100 is continuously sucked by the rotating member 150 and the turbo fan 151 through the air inlet 111, and the sucked air is the motor ( 100) flow inside.

Air flowing in the motor 100 is discharged to the outside of the motor 100 through the air discharge port 121 formed in the lower case 120.

That is, the air flowing in the motor 100 is pushed by the air which is continuously sucked into the motor 100 by the rotation of the turbo fan 151, and the air is discharged from the air outlet 121 of the motor 100. It is discharged to the outside.

At this time, the discharged air is guided by a plurality of guide vanes 124 bent at a predetermined angle on the outer surface of the lower case 120 on the side of the air discharge port 121 by the guide vanes 124. Since the discharge air flows more smoothly, the discharge air is more easily discharged to the outside of the motor 100.

Here, once again to briefly describe the operation of the BCD motor 100, the BCD motor 100 is a rotating member 150 that functions as a stator 140 and a rotor in the upper, lower cases (110, 120) In addition, by installing the turbo fan 151 having a plurality of rotary blades 154 rotatably outside the stator 140, the BCD motor 100 is a fan is integrally formed in the motor Of course, while the turbo fan 151 of the rotating member 150 is rotated outside the stator 140 to suck and discharge the outside air.

The BCD motor 100 may be applied to a cleaner, a hair dryer, a hand dryer, or a product used in real life, such as a range hood or an industrial hot fan, and all products used for industrial purposes.

As described above, the BCD motor according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings described herein, and various modifications may be made by those skilled in the art within the technical scope of the present invention. Of course it can be done.

1 is a perspective view showing the structure of the present invention the BCD motor.

Figure 2 is a perspective view of the present invention the BCD motor as seen from the bottom.

Figure 3 is a sectional view showing a cross-sectional view of the present invention the BCD motor.

Figure 4 is an exploded perspective view showing each configuration of the present invention the BCD motor separated.

5 is a cross-sectional view showing each configuration of a BCD motor of the present invention in a cross-sectional view.

* Description of the symbols for the main parts of the drawings *

100: BCD motor 110: upper case

111: air intake 120: lower case

121: air discharge port 123: coupling groove

124: guide blade 130: shaft

140: stator 150: rotating member

151: turbo fan 152: magnet

153: yoke 154: rotary blade

160: bushing 161: bearing

170: rubber packing

Claims (7)

For brushless BCD motors from DC motors, An upper case having an air intake port to form an upper side appearance of the BCD motor as well as to form the inside of the motor in a vacuum state; A lower case having an air discharge port to form an outer appearance of the lower side of the motor as well as to be coupled to a lower portion of the upper case; A coupling groove portion protruding in the inner side of the lower case so that the lower end of the shaft is rotatably installed on the inner circumferential surface and the PCB is coupled to the outer circumferential surface; A bushing coupled to the coupling groove to support the rotation of the shaft as well as a bearing installed on an inner surface thereof to prevent the shaft from flowing; The stator is located above the PCB and fixedly coupled to the outer circumferential surface of the coupling groove to generate an electromagnetic force. The central portion is coupled to the upper end of the upper and lower cases as well as coupled to the upper end of the shaft and coupled to the upper end of the shaft to suck and discharge the external air while being rotated with the shaft by the electromagnetic force of the stator. Turbo fan forming a plurality of wings on the upper surface as well as the insertion groove on the lower surface to be sucked and discharged, and is inserted into the insertion groove of the turbo fan to rotate the turbo fan by interaction with the magnetic force of the stator BCD motor, characterized in that it is composed of a magnet that generates a magnetic force, and a rotating member that is installed to surround the magnet as well as inserted into the insertion groove portion to prevent the magnetic force of the magnet from escaping to the outside. The method of claim 1, The upper and lower portions of the bushing is a BCD motor, characterized in that the washer is coupled to each other to reduce the friction of the upper and lower surfaces of the bushing in contact with the shaft inserted into the bearing in the bushing. The method of claim 1, A plurality of hooks are formed on an outer circumferential surface of the upper case, and each hook is fastened to the outer circumferential surface of the lower case to form a plurality of locking jaws for coupling and fixing the upper case and the lower case to each other. The method of claim 1, BLC motor, characterized in that the rubber packing to block the vibration path of the motor is coupled to the outer peripheral surface of the upper case and the lower case in contact with each other. The method of claim 1, BLC motor, characterized in that the outer surface of the lower case located in the air discharge port of the lower case is formed with a plurality of guide vanes for guiding the flow of the discharged air. The method of claim 5, wherein Each of the induction wings are bent at a certain angle in the air flow direction Bildish motor, characterized in that formed. The method of claim 1, Bial DC motor, characterized in that for forming a through hole in the center lower surface of the lower case, the stopper coupled to the through hole to open and close the through hole.

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