KR19980075351A - Noise prevention structure of vacuum cleaner driving motor - Google Patents

Abstract

The present invention relates to a drive motor noise suppression device of a vacuum cleaner, and more particularly, to a noise prevention structure of a drive motor for reducing noise by extending an exhaust path of exhaust noise generated from the drive motor, In the vacuum cleaner having the dust collecting chamber 3 provided with 5) and the driving chamber 4 equipped with the driving motor 20 for providing suction force, the driving motor 20 is interposed between the dustproof members 32. Front cover 30 surrounding the front of the; One side is fixed to the front cover 30, the first chamber 40 surrounding the rear outer side of the drive motor 20 and; One side is fixed to the first chamber, and is formed to have a predetermined spaced space with the first chamber on the outside of the first chamber 40, and transfers air from the first chamber 40 by the first communication pipe 42 Receiving third chamber 60; It is arranged to maintain a predetermined distance with each chamber between the first chamber 40 and the third chamber 60, is isolated from the first chamber 40 and the third chamber (52) by the second communication tube (52) The noise is generated by extending the discharge path of the operation sound of the driving motor and the intake air by the noise prevention device composed of the second chamber 50 having the exhaust hole 62 which receives air from the air and discharges it to the driving chamber 4. This can be minimized.

Description

Noise prevention structure of vacuum cleaner driving motor

The present invention relates to a drive motor noise suppression apparatus of a vacuum cleaner, and more particularly, to a noise prevention structure of a drive motor that reduces noise by extending an exhaust path of exhaust noise generated from the drive motor.

Currently widely used vacuum cleaner is a dust bag provided to the dust collection chamber by the suction force generated by the drive motor mounted in the drive chamber of the main body to suck external dust or foreign matter, the drive motor is high High power motors with RPM are used. Therefore, the use of such a high-power motor generates a large amount of noise when driving the motor is required to regulate this.

Therefore, in the related art, a sound absorbing material or the like is installed on the exhaust path discharged from the driving motor to reduce the noise as described above.

1 and 2 show such a conventional noise suppression device, whereby a dust collecting chamber 3 and a driving chamber 3 divided by a partition wall 2 having a communication hole 2a in the main body 1 are shown. 4) is formed.

The dust collecting chamber 3 is provided with a dust bag 5, and the flexible pipe 6 is connected from the outside of the dust collecting chamber 3 to introduce air including dust from the outside. In addition, the drive chamber 4 is provided with a drive motor 10 which sucks air in the dust collecting chamber 3 through the communication hole 2a and discharges it to the discharge hole 4a formed at one side of the driving chamber 4. do. This drive motor 10 has a very high output as described above, and the driving noise is very loud when driven.

Therefore, the drive motor 10 is configured in a form wrapped around the front cover 11 and the rear cover 12, between the drive motor 10 and the front cover 11, a dustproof member (such as a sponge) 13) is provided. On the other hand, an air guide 14 having an exhaust hole 14a for discharging the sucked air downward is fixed to the rear end of the driving motor 10, and the air guide 14 is disposed on the upper portion of the rear cover 12. An exhaust hole 12a for discharging the discharged air to the drive chamber 4 is formed.

The inner surface of the rear cover 12 is provided with a felt 15 for dustproof light soundproofing, the end of the drive motor 10 is supported by the rear cover 12 by the anti-vibration rubber (16).

The vacuum cleaner having such a configuration sucks the air in the dust collecting chamber 3 toward the driving chamber 4 through the communication hole 2a on the partition wall 2 when the driving motor 10 is driven. Accordingly, as the pressure in the dust collecting chamber 3 drops, external air containing dust and foreign matter is sucked through a brush and a communication tube (not shown), and the air flows into the dust bag 5 through the flexible tube 6. . In the dust bag 5, dust and foreign substances are filtered out of the air, and only relatively clean air is sucked into the driving motor 10 through the communication hole 2a. At this time, a filter (not shown) is interposed on the communication hole 2a to filter out fine dust and the like contained in the air that has passed through the dust bag 5, and the air having good purification state is introduced into the driving motor 10. do.

The air introduced into the driving motor 10 is discharged into the rear cover 12 through the exhaust hole 14a of the air guide 14, and the air flows again through the rear cover 12 to form the upper exhaust hole. It is discharged to the drive chamber 4 via 12a. Then, the air discharged to the drive chamber 4 is once again filtered by the exhaust filter 17 provided in the discharge hole 4a so that the air having a very good purification state is discharged to the room.

However, the conventional vacuum cleaner having such a configuration has a problem in that the exhaust noise due to the operation sound and the air discharge of the driving motor 10 is greatly generated.

That is, in the conventional structure, many sound-absorbing materials and dust-proof rubbers for dustproof and soundproof are adopted, but the actual air discharge path is short, so that sufficient time for reducing the noise of the discharged air is not secured. The noise was increased, and thus the situation was accompanied by a problem of low reliability of the product.

Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide an anti-noise device for a vacuum cleaner driving motor which can improve the performance of a product by minimizing the noise caused by the operation sound and exhaust of the driving motor. In providing.

1 is a cross-sectional view showing the internal configuration of a conventional vacuum cleaner

Figure 2 is an exploded perspective view showing the configuration of a conventional vacuum cleaner driving motor

Figure 3 is a cross-sectional view showing the configuration of a preferred embodiment of the noise prevention structure of the vacuum cleaner driving motor according to the present invention

Figure 4 is an exploded perspective view showing the configuration of a vacuum cleaner driving motor according to the present invention

5 is a cross-sectional view showing the configuration of a vacuum cleaner driving motor according to the present invention;

Figure 6 is an enlarged view of the main part showing the configuration of the vacuum cleaner driving motor according to the present invention

Figure 7 is a cross-sectional view showing the configuration of another embodiment of the noise prevention structure of the vacuum cleaner driving motor according to the present invention

Explanation of symbols on the main parts of the drawings

1: body 2: bulkhead

2a: Communist 3: Dust collection room

4: drive chamber 4a: discharge hole

5: dust bag 6: flexible tube

20: drive motor 30: front cover

32: dustproof member 40: first chamber

42: first communication pipe 50: second chamber

52: second communication tube 60: third chamber

62: vent hole 70: dustproof rubber

An object of the present invention comprises a vacuum cleaner having a dust chamber provided with a dust bag and a drive chamber equipped with a drive motor for providing a suction force, the front cover surrounding the front of the drive motor via a dustproof member; A first chamber having one side fixed to the front cover and surrounding a rear outer side of the driving motor; A third chamber having one side fixed to the first chamber, the third chamber being formed to have a predetermined separation space from the first chamber outside the first chamber, and receiving air from the first chamber by a first communication tube; An exhaust hole arranged to maintain a predetermined distance from each chamber between the first chamber and the third chamber, is isolated from the first chamber, and receives air from the third chamber by the second communication pipe and discharges the air into the driving chamber. It can be achieved by the noise prevention device of the vacuum cleaner having a second chamber equipped.

Hereinafter, a preferred embodiment of the drive motor noise suppression apparatus of the vacuum cleaner according to the present invention will be described in more detail with reference to the accompanying drawings. (The same configuration as in the prior art will be described with the same reference numerals as in the prior art. )

First, Figure 3 is a cross-sectional view of a vacuum cleaner employing a noise prevention device according to the present invention. According to this, the dust collection chamber 3 and the drive chamber 4 which are divided by the partition 2 which has the communication hole 2a are formed in the inside of the main body 1 ,.

The dust collecting chamber 3 is provided with a dust bag 5, and the flexible pipe 6 is connected to the dust collecting chamber 3 to introduce air including dust from the outside. In addition, the drive chamber 4 is provided with a drive motor 20 which sucks air in the dust collecting chamber 3 through the communication hole 2a and discharges it to the discharge hole 4a formed at one side of the driving chamber 4. do.

The drive motor 20 is configured to be surrounded by the front cover 30 and the plurality of chambers 40, 50, 60, a sponge, etc. between the drive motor 20 and the front cover 30 It is provided with a dustproof member (32).

Meanwhile, the chamber covers a rear end of the driving motor 20 and is coupled to have a first space 40 fixed to the front cover 30 and a predetermined spaced space outside the first chamber 40. The second chamber 50 and the third chamber 60 is fixed to the first chamber 40 to have a predetermined spaced space outside the second chamber 50.

The driving motor 20 and the second chamber 50 form a separation space required by the anti-vibration rubber 70 supported by the third chamber 60.

According to FIG. 5, the first chamber 40 and the third chamber 60 are communicated with each other by a plurality of first communication pipes 42 such that air in the first chamber 40 flows into the third chamber 60. It is. Further, at the inner circumferential edge of the second chamber 50, a plurality of second communication pipes 52 are formed to introduce air in the third chamber 60 into the second chamber 50.

The first communication pipe 42 and the second communication pipe 52 is preferably configured to cross each other so that the air introduced into the third chamber 60 sufficiently flows back into the second chamber 50.

On the other hand, the third chamber 60 is formed with an exhaust hole 62 for discharging air in the second chamber 50 into the drive chamber 4.

The drive motor noise prevention structure of the vacuum cleaner according to the present invention having such a configuration sucks air in the dust collecting chamber 3 through the communication hole 2a on the partition wall 2 when the driving motor 20 is driven. . Accordingly, as the pressure in the dust collecting chamber 3 drops, external air containing dust and foreign matter is sucked through a brush and a communication tube (not shown), and the air is introduced into the dust bag 5 through the flexible tube 6. . In the dust bag 5, dust and foreign substances are filtered out of the air, and only relatively clean air is sucked into the driving motor 20 through the communication hole 2a. At this time, a filter (not shown) is interposed on the communication hole 2a to further filter out fine dust and the like contained in the air passing through the dust bag 5 to introduce the air having a good purification state into the driving motor 20. do.

Meanwhile, as shown in FIG. 6, air introduced into the driving motor 20 is introduced into the third chamber 60 through the first communication pipe 42 from the first chamber 40, and the third chamber 60. Air introduced into is introduced into the second chamber 50 through the second communication pipe (52). At this time, since the air introduced into the third chamber 60 sufficiently flows in the third chamber 60 and introduced into the second chamber 50, the noise is reduced.

The air introduced into the second chamber 50 flows back into the second chamber 50 and is discharged to the driving chamber 4 through the exhaust hole 62 formed at one side of the third chamber 60. . Then, the air discharged to the drive chamber 4 is once again filtered by the filter 17 provided in the discharge hole 4a so that the air having a very good purification state is discharged to the room.

According to the present invention, since the air flows through a relatively long path and is discharged to the driving chamber 4, the effect of noise attenuation is relatively doubled. That is, the discharge path is extended by the first and third chambers to be alternately flowed by the first communication pipe 42 and the second communication pipe 52 so that the discharge motor is extended so that the driving motor can pass through this path. The noise generated by the operation sound and exhaust of the 20 is discharged to the drive chamber 4 in a sufficiently attenuated state.

Meanwhile, according to the present invention, the first communication pipe and the second communication pipe 52 may expand the discharge side to increase the noise attenuation effect. That is, as shown in FIG. 7, in configuring each of the first communication pipes 42 and the second communication pipes 52, the pressure is momentarily dropped in the process of moving between chambers by making the diameter of the discharge side larger than the inlet side. The noise reduction effect can be further improved.

As described above, the noise preventing structure of the vacuum cleaner driving motor according to the present invention constitutes a first chamber having a predetermined buffer space at the periphery of the driving motor, respectively, and the second chamber and the third chamber are disposed outside the predetermined chamber. It is configured to have a spaced apart space, but the first chamber and the third chamber is in communication with each other, and the second chamber and the third chamber and the second chamber by communicating with the suction sound of the operating motor and dust collecting chamber The discharge path of the noise due to the exhaust of the air is configured to be long as well as to buffer the noise in each chamber, and to discharge the air discharged to the drive chamber from the second chamber to the outside through the discharge hole formed in the drive chamber It has the effect of minimizing noise.

Claims (3)

In constructing a vacuum cleaner having a dust collecting chamber 3 provided with a dust bag 5 and a driving chamber 4 equipped with a driving motor 20 for providing suction power, A front cover 30 surrounding the front of the driving motor 20 through the dustproof member 32; One side is fixed to the front cover 30, the first chamber 40 surrounding the rear outer side of the drive motor 20 and; One side is fixed to the first chamber, and is formed to have a predetermined spaced space with the first chamber on the outside of the first chamber 40, and transfers air from the first chamber 40 by the first communication pipe 42 Receiving third chamber 60; It is arranged to maintain a predetermined distance with each chamber between the first chamber 40 and the third chamber 60, is isolated from the first chamber 40 and the third chamber (52) by the second communication tube (52) And a second chamber (50) having an exhaust hole (62) for receiving air from the air and discharging it to the drive chamber (4). According to claim 1, wherein the first communication pipe 42 is configured to project radially outward from the outer periphery of the first chamber 40, the second communication pipe 52 is a radius from the inner peripheral surface of the second chamber (50) Noise prevention structure of the vacuum cleaner drive motor, characterized in that the protruding inward direction. The noise preventing structure of the vacuum cleaner driving motor according to claim 1, wherein the first communication pipe (42) and the second communication pipe (52) have a larger diameter of the discharge side than the diameter of the inlet side.