JPS61187825A - Electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a soundproofing device for a vacuum cleaner.

BACKGROUND OF THE INVENTION Conventionally, this type of vacuum cleaner has been disclosed, for example, in Japanese Patent Application Laid-open No. 1986-10.
The structure was as shown in Japanese Patent No. 3637, and specifically, as shown in FIG.

That is, as one of the soundproofing devices for the fan motor 1, which is the main sound source of a vacuum cleaner, an annular soundproofing board 2 made of a sound-absorbing material is wound around the fan motor 1, and a substantially cylindrical soundproofing board 2 is wound around the fan motor 1 on the outer circumference thereof. A soundproof cylinder 3 was installed.

Problems to be Solved by the Invention However, in such a structure, the soundproof plate 2. The soundproofing air and sound hit the inner wall of the motor chamber 6, and the sound was propagated outside the vacuum cleaner body 4, so the vacuum cleaner was not sufficiently soundproofed and was very noisy.

Means for Solving the Problems The technical means of the present invention for solving the above-mentioned problems is to form a partition wall in the soundproof cylinder so that its cross section is approximately H-shaped, and to divide the upper and lower parts of the approximately H-shape into The middle part is used as an exhaust passage.

For production The effect of this technical means is as follows.

In other words, the sound generated when the exhaust air discharged from the fan motor flows, and the sound generated by the fan motor are:
The sound is insulated and attenuated by the soundproof cylinder, and the exhaust air is also discharged from the exhaust port of the vacuum cleaner body through an exhaust passage formed by the soundproof cylinder and the partition wall, and the exhaust air absorbs and absorbs sound in the exhaust passage. Since the vacuum cleaner is sound insulated, the sound energy is attenuated by what covers the fan motor and the exhaust passage, and the propagation of sound outside the vacuum cleaner body is significantly reduced, resulting in low noise.

Example An embodiment of the present invention will be described below based on the accompanying drawings.

In FIGS. 1 to 3, reference numeral 20 indicates the lower part of the main body, which has an upwardly opening dust collection chamber 21 on the front side and a fan motor chamber 24 containing a built-in fan motor 23 on the rear side partitioned by a main body partition 22. . 26 is arranged at the front part of the dust collection chamber 21, and the lower part of the main body 2
With the front cover secured to the hose (not shown)
It has a suction port 26 for connecting.

A dust collection bag 27 is attached to the dust collection chamber 21, and a removable dust lid 28 is attached to the upper opening.

Reference numeral 29 denotes a main body that covers the upper part of the fan exhaust chamber 24, and a rotatable handle 3o for carrying the vacuum cleaner main body is pivotally supported on the upper part.

Reference numerals 31 and 32 denote front wheels and rear wheels for movement disposed at the lower part of the lower body 2o.

Reference numeral 33 denotes a substantially cylindrical soundproof cylinder that covers the outer periphery of the fan motor 23 and supports the front and rear parts of the fan motor 23 via supporting rubber 34 and 35.

A partition wall 36 is located between the main body partition wall 22 and the support rubber 34, and is in contact with the main body partition wall 22 via a partition wall support 37.

Reference numeral 32 denotes an exhaust port formed in the soundproof cylinder 33, which guides the exhaust air of the fan motor 23 to the outside of the soundproof cylinder 33, and leads the exhaust air from the soundproof cylinder 33 to the exhaust passage 3.
9, and is discharged to the outside of the vacuum cleaner body from an exhaust port 40 arranged at the rear of the lower body 20.

Reference numeral 41 indicates a sound insulating plate made of a sound absorbing material or the like wound around the outer periphery of the fan motor 23, and reference numeral 42 indicates an exhaust port gasket located at the exhaust port.

Reference numeral 43 denotes a partition wall formed in the soundproof cylinder 33 so that its cross section is approximately H-shaped, and the discharge port 38 is located between the partition walls 43.
The space formed by the partition wall 43, the upper body 29, and the lower body 2o is defined as an exhaust passage 39.

Reference numeral 44 denotes a partition gasket placed at the tip of the partition wall 43 of the soundproof cylinder 34, which is inscribed in the inner walls of the upper body 29 and the lower body 20, supports the soundproof cylinder 34, and prevents exhaust air from flowing outside the exhaust passage 39. I'm trying to make sure it doesn't get lost.

Further, the upper and lower exhaust passages 39 formed on the partition wall 43 have approximately the same cross-sectional area, and the upper and lower exhaust passages 39 have approximately the same cross-sectional area.
The fan motor 23, which is a sound source, is located approximately at the center in the height direction between 0 and 0, and the fan motor 23, which is a sound source, is kept away from the outer wall of the vacuum cleaner body.

Reference numeral 45 denotes an exhaust passage cover made of a sound-absorbing material having a square-shaped cross section so as to cover the inner side surface between the partition walls 43 and the opening side, and the inside thereof forms the exhaust passage 39.

Reference numeral 46 designates an annular sound-absorbing gasket placed at the front of the partition wall 36, which also provides soundproofing on the intake side.

With the above configuration, the exhaust air from the fan motor 23 passes through the soundproof plate 41, passes through the exhaust port 38 of the soundproof tube 33, and then passes through the exhaust passage 39. It passes through the exhaust port gasket 42 and is discharged to the outside of the cleaner body.

At this time, the sound generated by the fan motor 22 is absorbed by the soundproof plate 41, insulated by the soundproof cylinder 33, then absorbed by the exhaust passage cover 46, and insulated by the partition wall 43, and as a result, the energy of the sound is significantly attenuated. It is something that will be done.

In addition, the exhaust passage cover 46 absorbs the sound generated in various parts due to the exhaust air, and the partition wall 43 insulates the sound, so the energy of the sound is attenuated.Furthermore, the exhaust passage 39 is made longer, which doubles the effect. It is something that will be done.

Note that the vibration noise of the fan motor 23 is also suppressed by the support rubber 34. 35. Soundproof cylinder 33. This is a structure in which a partition wall gasket 44, a partition wall support 39, etc. are provided to damp vibrations, and is an effective soundproof structure against all sounds.

In addition, since the exhaust passage 39 is divided into upper and lower halves,
The sound energy is dispersed, thereby increasing the soundproofing effect, and although they merge at the exhaust port 40, they interfere with each other and the sound energy is attenuated, reducing the noise level of the vacuum cleaner.

Although the partition wall 43 is formed on the soundproof tube 33, the same effect can be obtained even if it is placed on the main body side.

Effects of the Invention The present invention forms a soundproof tube with an H-shaped cross section, and has two upper and lower sections.
If the exhaust passage is used as an exhaust passage, the fan motor will have a double or triple support structure, which will reduce vibration noise, wind noise, and other sounds at all frequencies, making it possible to clean with low noise. It provides an opportunity for

[Brief explanation of the drawing]

Fig. 1 is a front sectional view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a side sectional view, and Fig. 3 is an external perspective view of the same soundproof tube.
FIG. 4 is a sectional view of a conventional vacuum cleaner. 23...Fan motor, 33...Soundproof tube, 34°36...Support rubber, 39...-
・Exhaust passage, 40...--Exhaust port, 43...
・Bulkhead, 44... Patsukin. Name of agent: Patent attorney Toshio Nakao and 1 other person11
1! ! f 44″″-Hitsukin 39453B44 ~) h Deaf IC)

Claims (3)

[Claims] (1) A partition wall whose cross section is approximately H-shaped to correspond to the approximately cylindrical soundproof tube that covers the outer periphery of the fan motor and supports the front and rear parts of the fan motor via support rubber. The vacuum cleaner has a substantially H-shaped upper and lower space that communicates with an exhaust port of a vacuum cleaner main body so as to serve as an exhaust passage. (2) The vacuum cleaner according to claim 1, wherein the tip of the substantially H-shaped partition wall is brought into contact with the inner wall or guide rib of the vacuum cleaner body via a packing or the like. (3) The vacuum cleaner according to claim 1, wherein the exhaust passage cross-sectional areas of the substantially H-shaped upper and lower spaces are substantially equal.