JPH05253113A - Vacuum cleaner - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a quiet electric vacuum cleaner that significantly reduces the exhaust noise of a motor fan. [Structure] By configuring the exhaust port 3a of the motor 3 to be located below the ventilation port 8a of the soundproof cylinder 8 that covers the motor 3, the exhaust gas of the motor fan 4 exits from the exhaust port 3a and becomes a medium soundproof material 9. After a collision, it rises and the middle soundproof material 11 and the vent 8
a. Since it passes through the outer soundproofing material 11 and is discharged, a quiet electric vacuum cleaner with a large noise reduction effect and less noise can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positional relationship between an exhaust port of a motor of a vacuum cleaner and a ventilation port of a soundproof tube.

[0002]

2. Description of the Related Art In recent years, there has been an increasing demand for vacuum cleaners to reduce the exhaust noise of motor fans.

A conventional vacuum cleaner will be described below. FIG. 2 shows the configuration of a conventional electric vacuum cleaner.
As shown in FIG. 2, the main body of the electric vacuum cleaner is composed of a main body upper part 1 and a main body lower part 2, and a lower part of a motor fan 4 of a motor 3 is attached to a concave part of the main body lower part 2 via a vibration isolating rubber 5. . The upper portion of the motor fan 4 is pressed by the metal case 7 via the antivibration rubber 6. The outer periphery of the portion of the motor 3 that protrudes into the upper portion 1 of the main body is covered with a soundproof tube 8, and a plurality of exhaust ports 3a provided in the motor 3 and a plurality of vent holes 8a provided in the soundproof tube 8 face the same horizontal plane. It is installed in. The soundproof cylinder 8 has an inner soundproof material 9 and an upper soundproof material 10 which are breathable around the inner circumference thereof, and an outer soundproof material 11 which is breathable around the outer circumference thereof.

The operation of the electric vacuum cleaner configured as described above will be described below. Exhaust gas generated from the motor fan 4 flows horizontally from the exhaust port 3a of the motor 3 directly through the middle soundproof material 9, the vent hole 8a, and the outer soundproof material 11 as shown by the arrow into the upper portion 1 of the main body while silencing the exhaust sound. And is exhausted from the main body upper exhaust port 1a.

[0005]

However, in the above-mentioned conventional configuration, the exhaust gas generated by the motor fan 4 passes through the exhaust port 3a at a right angle through the surface of the middle soundproof material 9, and passes through the vent hole 8a and the outer soundproof material 11. Since it is discharged to the outside through the main body upper exhaust port 1a, there is a problem that a sufficient noise reduction effect cannot be obtained and exhaust noise is large.

The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a low-noise electric vacuum cleaner in which exhaust noise of a motor fan is reduced.

[0007]

In order to achieve this object, an electric vacuum cleaner according to the present invention has a structure in which the motor is attached to the lower part of the main body so that the exhaust port of the motor is below the ventilation port of the soundproof cylinder. Have

[0008]

In this structure, the exhaust gas emitted from the exhaust port of the motor collides with the middle soundproof material and then rises, passes through the middle soundproof material, the ventilation hole of the soundproof cylinder, and the outer soundproof material, and is greatly damped to be the upper part of the main body. It will be discharged from the exhaust port.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same components as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 1, the exhaust port 3a of the motor 3
The motor 3 is attached to the lower part 2 of the main body so that the lower edge is flush with the metal case 7, and the exhaust port 3a is located below the ventilation port 8a of the soundproof cylinder 8.

The operation of the electric vacuum cleaner configured as described above will be described with reference to FIG. Motor fan 4
The generated exhaust gas is discharged from the exhaust port 3a, collides with the surface of the middle soundproofing material 9 as shown by an arrow, and then rises to reach the middle soundproofing material 9,
After passing through the ventilation hole 8a and the external soundproofing material 11, the sound is silenced and discharged from the upper exhaust port 1a of the main body.

As described above, according to this embodiment, the exhaust port 3
Since a is located below the vent hole 8a, the exhaust does not pass through the middle soundproofing material 9 surface at a right angle as in the conventional case, but collides with the middle soundproofing material 9 surface, is largely muted, and then rises to the middle soundproofing material. Since it is discharged through the material 9, the ventilation port 8a, and the external soundproof material 11, the sound deadening effect can be enhanced.

[0013]

As is apparent from the above description of the embodiments, the present invention is constructed so that the exhaust port of the motor is located below the ventilation port of the soundproof cylinder, so that the exhaust of the motor fan is the exhaust gas. Since it is discharged from the mouth, collides with the surface of the middle soundproofing material, is largely silenced, and then is discharged through the vent hole, a quiet electric vacuum cleaner with a large noise reduction effect and less exhaust noise can be realized.

[Brief description of drawings]

FIG. 1 is a sectional view of an electric vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a conventional electric vacuum cleaner.

[Explanation of symbols]

 2 Lower part of body 3 Motor 3a Exhaust port 8 Soundproof tube 8a Vent port

Claims (1)

[Claims] 1. An electric vacuum cleaner having a soundproof cylinder provided with a vent hole for covering an exhaust port of a motor, wherein the motor is attached to a lower portion of the main body so that the exhaust port is located below the vent port.