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Electric vacuum cleaner

A vacuum cleaner and electric technology, which is applied in the direction of vacuum cleaners, suction hoses, cleaning equipment, etc., can solve the problems that the noise of electric vacuum cleaners cannot be reduced, and the noise cannot be silenced.

Inactive Publication Date: 2013-02-06
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned conventional electric vacuum cleaner, there is still room for improvement from the viewpoint of effectively attenuating the noise generated by the air flowing in the hose or the extension pipe and improving the quiet performance of the electric vacuum cleaner.
[0008] That is, in the above-mentioned conventional electric vacuum cleaner, since the sound-absorbing material formed by a single density is arranged in the handle pipe and the extension pipe of the hose, it may not be possible to effectively make the sound absorbing material flow in the handle pipe and the extension pipe of the hose. The noise generated by the air is diffused into the sound-absorbing material
Therefore, the noise generated by the air flowing in the handle tube of the hose or the extension tube cannot be effectively silenced by the sound-absorbing material, and the noise of the electric vacuum cleaner cannot be reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0033] use Figure 1 to Figure 7 Embodiment 1 of the electric vacuum cleaner of this invention is demonstrated.

[0034] figure 1 It is an overall perspective view showing Embodiment 1 of the vacuum cleaner of the present invention. and, figure 2 It is an overall cross-sectional view of a vacuum cleaner body according to Embodiment 1 of the electric vacuum cleaner of the present invention. and, Figure 3A It is an overall perspective view of the extension pipe showing the state in which the second pipe body is housed inside the first pipe body in Embodiment 1 of the electric vacuum cleaner of the present invention, Figure 3B It is an overall perspective view of the extension pipe showing the extended state of the first pipe body and the second pipe body in Embodiment 1 of the electric vacuum cleaner of the present invention. and, Figure 4 yes Figure 3B This is an overall cross-sectional view of the extension pipe shown taken at the center in the longitudinal direct...

Embodiment approach 2

[0085] use Figure 8 Embodiment 2 of the electric vacuum cleaner of this invention is demonstrated. In addition, the same reference numerals are assigned to the same components as those in Embodiment 1, and description thereof will be omitted.

[0086] Figure 8 It is an overall cross-sectional view of the extension pipe according to Embodiment 2 of the electric vacuum cleaner of the present invention cut along the central portion in the longitudinal direction.

[0087] Such as Figure 8 As shown, in the present embodiment, the sound absorbing member 42 is composed of a first sound absorbing material 42a, a second sound absorbing material 42b, and a third sound absorbing material 42c. The first sound absorbing material 42a is arranged on the inner cover 41 side. The second sound absorbing material 42b is disposed on the side of the outer cover 35, and its density is higher than that of the first sound absorbing material 42a. The third sound absorbing material 42c is dispo...

Embodiment approach 3

[0096] use Figure 9 ~ Figure 12 Embodiment 3 of the electric vacuum cleaner of this invention is demonstrated. In addition, since the overall structure of an electric vacuum cleaner and the structure of a vacuum cleaner main body are the same as Embodiment 1, detailed description is abbreviate|omitted, and the hose which is the characteristic of this embodiment is demonstrated in detail below.

[0097] Figure 9 It is an overall perspective view of the hose in Embodiment 3 of the vacuum cleaner of the present invention. and, Figure 10 It is a central sectional view of the hose in Embodiment 3 of the vacuum cleaner of the present invention. and, Figure 11 It is an exploded perspective view of Embodiment 3 of the vacuum cleaner according to the present invention when the tip pipe is seen from above. and, Figure 12 It is an exploded perspective view of Embodiment 3 of the vacuum cleaner according to the present invention when the distal end pipe is viewed from below.

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PUM

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Abstract

The present invention provides an electric vacuum cleaner, comprising: a cleaner main body having a built-in electric blower for producing suction air, wherein the suction air is used for sucking the dust on a surface to-be-cleaned; and a sound absorption part, which is configured in an air induction way by which the suction wind generated by the electric blower reaches the cleaner main body. The sound absorption part comprises: a cylinder which is internally provided with a suction flow path constituting part of an air suction passage and at least one opening portion, a cover mounted on the cylinder and covering the opening portion, and a sound absorption member disposed between the opening portion and the cover. The sound absorption member is formed by the way that the density close to the cover body side is greater than that of the side close to the opening portion.

Description

technical field [0001] The present invention relates to electric vacuum cleaners. Background technique [0002] Conventionally, in this type of electric vacuum cleaner, in order to improve the quiet performance of the electric vacuum cleaner, a structure in which a sound-absorbing material is arranged in a handle pipe provided at the end of the hose near the extension pipe side has been proposed (for example, refer to Patent Document 1 ). [0003] That is, if Figure 13A As shown, a conventional electric vacuum cleaner includes a vacuum cleaner main body 201 , a suction hose (suction hose) 203 , an extension pipe 204 , and a suction tool 205 . An electric blower (not shown) is built in the electric vacuum cleaner main body 201 . One end of the suction hose 203 is detachably connected to the vacuum cleaner body 201 , and the other end has a handle pipe 202 . One end of the extension pipe 204 is detachably connected to the handle pipe 202 of the suction hose 203 . The suct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47L9/00A47L9/24
Inventor 星出真一恩田雅一藤原祐儿
Owner PANASONIC CORP
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