JPH11137485A - Electric vacuum cleaner - Google Patents

Abstract

(57) [Problem] To provide a vacuum cleaner in which a storage box for a printed circuit board is arranged above an electric blower so as to cut off noise of the electric blower and reduce noise. SOLUTION: An electric blower 29 is held by a front support 30, a rear support 31 and a buffer 32, and a storage box 34 for storing a printed circuit board is disposed above the electric blower, and noise generated from the electric blower 29 is provided. A vacuum cleaner that shuts off air and provides spaces on the side and bottom surfaces of the electric blower 29 to ensure a sufficient exhaust passage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner used in ordinary households.

[0002]

2. Description of the Prior Art FIGS.
As shown in the figure, a dust collecting chamber 4 formed by the lower main body 1, the upper main body 2, and the lid 3 is formed in the front, and the electric blower 5 is provided with the front support 6, the rear support 7, the buffer 8 and the electric blower 5 in the rear. The electric blower room 5a held by the above is formed by the lower main body 1 and the upper main body 2. On the outer periphery of the electric blower 5, as shown in FIG. 6, a storage box 9b for storing a printed circuit board 9a is formed on an oblique side surface.
Further, a soundproof plate 10 is provided on the outer periphery of the electric blower 5 and the storage box 9
b. The reason for holding the storage box 9b of the printed circuit board 9a obliquely is that the electric blower 5 has the largest outer shape at the portion where the brush storage box 11 containing the carbon brush (not shown) is provided. By providing the storage box 9b in a direction perpendicular to the width direction, the compactness in the width direction has been achieved. On the other hand, as shown in FIG. 7, the cooling fins 9c for cooling the electronic components on the printed board 9a are held by being engaged with the holes 5c provided in the flange portion 5b of the electric blower 5, so that the printed board 9a is electrically driven. It could not be installed in a place away from the blower 5. Therefore, when the storage box 9b is held horizontally, the brush storage box 11 is held obliquely because it interferes with the brush storage box 11.

[0003]

In such a conventional vacuum cleaner, a part of the noise generated from the electric blower 5 is transmitted to the upper main body 2 through the soundproof plate 10. FIG.
In this case, the exhaust air from the electric blower 5 is exhausted to the outside via a path shown by an arrow. However, since the storage box 9b is provided on the path from the electric blower 5, the exhaust path is narrowed. In addition, since the exhaust gas crosses the end face of the storage box 9b due to the exhaust path, there is a problem that a wind noise is generated due to the exhaust noise. In addition, the sound from the bearing held at the rear part of the electric blower 5 was transmitted to the rear support 7 and leaked directly to the upper main body 2. The present invention aims to solve these problems and to provide a quiet vacuum cleaner.

[0004]

According to the present invention, a storage box for holding a printed circuit board is disposed horizontally above an electric blower, so that noise from the electric blower is cut off and an exhaust path is formed. By taking a large amount on the side and bottom surfaces of the electric blower, the exhaust path can be lengthened and noise can be reduced. Further, a bearing sound generated from inside the electric blower can be cut off by the substantially disk-shaped plate provided on the rear support, so that the noise can be further reduced.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION
By holding the storage box for storing the printed circuit board substantially horizontally above the electric blower, sound transmitted from the electric blower to the upper body can be prevented, and the side and lower surfaces of the electric blower can be effectively used as exhaust paths. Therefore, a long exhaust path can be taken, and noise can be reduced.

According to the invention of claim 2 of the present invention, the electric blower and the storage box are covered with a soundproof material so that noise from above the main body can be prevented from leaking, and the soundproof material prevents interference between the storage box and the upper main body. The transmission of vibration due to can be reduced.

According to a third aspect of the present invention, an exhaust port is provided on a front wall, a rear wall, a side surface, or a bottom surface of a storage box held above an electric blower. Immediately after the exhaust port, there is a wall of the upper body, so that the exhaust hits the wall and is dispersed to the side or below the electric blower, and finally flows out through an exhaust port provided in the upper body. As a result, the electronic components mounted on the printed circuit board are cooled, and the life of the electronic components is improved.

According to a fourth aspect of the present invention, the rear support and the buffer which support the rear portion of the electric blower are held by a claw provided on the rear support by a die cutting structure.

According to a fifth aspect of the present invention, the noise of the bearing of the electric blower is prevented by the soundproof wall provided at the central portion of the rear support to further reduce the noise.

[0010]

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 21 denotes a lower body, and an upper body 2 is provided in front of the lower body.
A dust collection chamber 24 formed by the cover 2 and the lid 23 is arranged, and an intake port 27 is formed in front of the dust collection chamber 24 by a front lid 25 and a check valve 26. Behind the check valve 26, a dust bag 28 is held. An electric blower chamber 33 is formed behind the lower main body 21 by holding an electric blower 29 with a front support 30, a rear support 31, and a buffer 32. Above the electric blower 29, a storage box 34 for storing a printed circuit board 34a constituting a control circuit is held. To avoid the brush storage box 29b of the electric blower 29, the printed circuit board 34a is
4, cooling fins 34c are formed in a U-shape below the printed circuit board 34a, and the lower part of the storage box 34 is cut out so as not to contact the brush storage box 29b of the electric blower 29. .

The operation of the above configuration is as follows.
Since there is no need to insert the cooling fins 34b into the cooling holes 29c provided in the electric blower 29, the printed circuit boards 34a
Can be held away from the electric blower 29, and the lower part of the storage box 34 can be released from the brush storage box 29b. Thereby, the storage box 34 can be held substantially horizontally above the electric blower 29.

Thus, the sound generated from the electric blower 29 can be cut off by disposing the storage box 34 above the electric blower 29. Further, since the side and lower surfaces of the electric blower 29 can be effectively used as an exhaust path and a long exhaust path can be obtained, it is possible to reduce exhaust noise.

(Embodiment 2) Next, a second embodiment of the present invention will be described with reference to FIGS.

The upper body 22 and the storage box 34 are brought close to each other, and the soundproof plate 35 is interposed therebetween.

The operation of the above configuration is as follows.
Since the upper body 22 and the storage box 34 are close to each other, it is difficult for exhaust gas to flow above the storage box 34, so that the electric blower 29
Noise from the vehicle can be effectively shut off. Further, by interposing a soundproof plate 35 between the storage box 34 and the upper main body 22, transmission of vibrations can be reduced and noise can be reduced.

(Embodiment 3) Next, a third embodiment of the present invention will be described with reference to FIGS. 1, 2 and 3. FIG.

An exhaust port 36 is provided behind the storage box 34.
The flow of exhaust gas from the electric blower 29 is indicated by an arrow. The exhaust gas first enters the inlet 34b provided in the front of the storage box 34, cools the cooling fins 34c held on the printed circuit board 34a, and then exhausts the exhaust gas provided in the rear. Although the air is exhausted from the opening 36, the exhaust is hit by the wall 37 behind the upper body 22 and diffused.

The operation of the above configuration is as follows.
Since the exhaust gas from the storage box 34 is once diffused by the wall 34 of the upper main body 22, the exhaust gas flows from the side direction and the lower surface direction as shown by arrows in FIG. It is more discharged outside the aircraft. As described above, since a long path is provided for the exhaust, the noise of the exhaust is also reduced.

(Embodiment 4) Next, a fourth embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The electric blower 29 is held by a front support 30, a rear support 31, and a buffer 32, and a claw 31a provided on the rear support 31 is formed by cutting a die.
I'm picking up.

The effects of the above configuration are as follows.
As shown in FIG. 1, in order to hold the buffer 32 on the rear support 31 with claws 31 a formed by cutting off the rear support 31,
The shape of the mold is simplified, and the cost of the mold can be reduced. Further, since the hole 39 is formed on the side contacting the electric blower 29, heat radiation of the outer periphery of the electric blower 29 is promoted, and the cooling effect is improved.

Embodiment 5 Next, a fifth embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A substantially circular shield plate 40 is formed at the center of the rear support 31 which is attached to the rear of the electric blower 29 and holds the buffer 31 in a mold opening configuration.

The effects of the above configuration are as follows.
A bearing 41 for holding a shaft (not shown) of the electric blower 29 is held in the rear of the electric blower 29, and a rotating noise generated from the bearing 41 is formed in a rear portion of the rear support 31 by a die cutting structure. The shielding plate 40 prevents leakage to the outside directly.

[0026]

As is apparent from the above embodiment, according to the first aspect of the present invention, the storage box for storing the printed circuit board is arranged above the electric blower so that the electric blower can be easily connected to the electric blower. With this, noise can be prevented.

According to the invention of claim 2 of the present invention, the storage box and the upper body are brought close to each other, and a soundproof plate having a buffer effect is arranged therebetween, so that a large number of air blowers can be provided on the side and lower surfaces of the electric blower. Spaces can be provided. As a result, the exhaust from the electric blower can be diverted and discharged from the main body, so that the exhaust path can be lengthened and the exhaust noise can be reduced.

According to the third aspect of the present invention, an exhaust port is provided behind the storage box. Even if the exhaust gas is exhausted from here, the exhaust gas collides with the wall of the upper main body and diffuses here, and is discharged into the main body. For this reason, the exhaust gas is discharged through a long path, which leads to a reduction in noise.

According to the fourth aspect of the present invention, the cost of the mold can be reduced by forming the claws of the rear support by cutting off the mold.

According to the invention of claim 5 of the present invention, the noise of the main body is reduced by preventing the bearing noise of the electric blower by the shielding plate provided on the rear support.

[Brief description of the drawings]

FIG. 1 is a sectional view of a vacuum cleaner showing one embodiment of the present invention.

FIG. 2 is a partial view of a vacuum cleaner showing one embodiment of the present invention.

FIG. 3 is a partial perspective view of a vacuum cleaner showing one embodiment of the present invention.

FIG. 4 is a partially exploded perspective view showing another embodiment of the present invention.

FIG. 5 is a sectional view showing a conventional vacuum cleaner.

FIG. 6 is a rear view of the conventional electric blower as viewed from behind.

FIG. 7 is an exploded perspective view of an electric blower portion of a conventional vacuum cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Lower main body 22 Upper main body 24 Dust collection chamber 29 Electric blower 31 Rear support body 32 Relaxing body 33 Electric blower room 34 Storage box 34a Printed circuit board (control circuit) 35 Soundproof plate 36 Exhaust port 40 Shielding plate

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshiki Kuroki 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] 1. A dust collecting chamber disposed in front of a main body for collecting dust, an electric blower chamber disposed behind and including an electric blower, a control circuit for controlling the electric blower, and the control circuit. An electric vacuum cleaner comprising a storage box for storing the storage box, and the storage box is disposed substantially horizontally above an electric blower. 2. The vacuum cleaner according to claim 1, wherein the electric blower and the storage box are covered with a soundproof material. 3. The vacuum cleaner according to claim 1, wherein an exhaust port is provided on a front wall, a rear wall, a side surface, or a bottom surface of the storage box. 4. A claw for forming a rear support for supporting a rear portion of the electric blower and a rib wall for supporting the rear support via a buffer on a main body side, and holding the buffer on the rear support. The vacuum cleaner according to any one of claims 1 to 3, wherein the vacuum cleaner is formed integrally with a mold opening structure. 5. A shielding plate is formed in a central portion of a rear support for supporting a rear portion of the electric blower, with a mold opening structure.
The vacuum cleaner according to any one of claims 4 to 4.