JPS60185529A - 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 Field of the Invention The present invention relates to a vacuum cleaner using a paper bag as a dust collection filter and collection container.

Structure of a conventional vacuum cleaner and its problems Figure 1 shows the schematic structure of a conventional vacuum cleaner, which includes a main body 2 of the vacuum cleaner with a built-in motor fan 1, and a paper bag 3 that serves as a collection filter and collection container. It has a dust box 4.

Dust sucked together with air from the floor surface by the suction of the motor fan 1 passes through a floor nozzle and a hose (not shown), and enters the paper bag 3 through the hose connection hole 5 of the dust box 4. Dust in the air that is sucked in is filtered and collected by the paper bag 3. Then, only the clean air from which dust has been removed passes through the communication path 6 between the dust box 4 and the cleaner body 2, reaches the motor fan 1, and is discharged to the outside through the exhaust hole 7.

Further, the bottom of the machine is equipped with casters 8 and rollers 9 for improving running performance when using the vacuum cleaner, and the front of the machine is equipped with a handle 10 for carrying. moreover,
Several airtight packings 11 are placed on the paper i3 provided to communicate with the hose connection hole 5, and a soundproofing material 12 is applied to the exhaust side of the motor fan l.

Similar to filters that use folded thick filter paper, filters made from paper bags can become clogged as their inner surface becomes covered with fine particles from the dust in the intake air. , the air permeability decreases significantly.

Therefore, conventional vacuum cleaners using paper bags are equipped with a dust removal device 13 in order to remove fine dust attached to the inner surface of the paper bag, restore its breathability, and maintain the performance of the paper bag 3 as a filter for a longer period of time. was.

The dust removal device 13 has a push button 14 and a spring 15 as shown in FIG.
, consists of a diaphragm 16, and when the push button 14 is pressed, the tip of the push button 14 hits the diaphragm 16, the convex part of the diaphragm 18 is reversed, and an impact is generated at 5 o'clock, the impact is transmitted to the paper bag 3, and the Fine dust adhering to the inner surface of the paper bag 3 is brushed off by force.

When the push button 14 is not pressed, the wall 1 of the dust box 4
7 and the push button 14, it is pushed back and returned to its original state.

However, this conventional dust removal method only applies slight vibrations to the paper bag, and does not press the paper bag and deform it.
A sufficient dust removal effect could not be obtained. Therefore, it is difficult to recover the air permeability of the paper bag, and the life of the paper bag as a filter is also shortened.
No significant improvement was obtained when comparing the models with and without such a dust removal method.

OBJECT OF THE INVENTION The present invention solves the conventional drawbacks as described in 2.
With a simple mechanism, the paper bag is crushed by an inflatable body that expands using the negative pressure inside the dust box, greatly deforming the paper bag as a whole, making electric cleaning more effective in removing fine dust from the inner surface of the paper bag. The aim is to provide an opportunity.

Structure of the Invention In order to achieve the following, the present invention includes a main body of a vacuum cleaner with a built-in motor fan, and a dust box with a built-in paper bag serving as a dust collection filter and collection container that communicates with a hose connection hole for dust suction. The vacuum cleaner is equipped with an inflatable body having an air intake hole that communicates with outside air or exhaust air and can be opened and closed, on the outside of the paper bag in the dust box.

With this configuration, the negative pressure inside the dust box that occurs during use is used to cause outside air or exhaust air to flow into the inflatable body built into the dust box together with the paper bag, and this inflatable body is inflated to inflate the paper bag. The paper bag is compressed and deformed to ensure removal of fine dust from the inner surface of the paper bag.

Description of examples Examples will be described below with reference to the accompanying drawings.

FIG. 3 shows an example in which the present invention is applied to a canister-type vacuum cleaner, where 18 is the main body of the vacuum cleaner and has a built-in motor fan 18. 20 is a dust box, which has a built-in paper bag 21 that serves as a dust collection filter and a collection container.

This paper bag 21 communicates with a hose connection hole 28, and the dust sucked together with air from the surface to be cleaned passes through a floor nozzle, an extension pipe, and a hose (not shown), and is sucked into the paper bag 21 through the hose connection hole 26. . Only the dust is filtered and collected by the paper bag 21, and only the clean air from which dust is removed is sent to the dust box 2.
0 and the motor fan 1 through the vacuum cleaner main day communication route.
9 and is further discharged to the outside of the aircraft from the exhaust hole 22.

The vacuum cleaner is moved by casters 23 and rollers 24 while in use, and a handle 25 is used to carry it.

Also, the periphery of the paper bag 21 that communicates with the hose connection hole 26 should be machined! - Tight is made of soft material such as rubber 27
is used.

In normal use, the paper bag 21 is spread all the way inside the dust box 20 due to the pressure difference between the inside and outside of the paper bag 21 due to ventilation pressure loss due to the material of the paper bag 21. The entire circumferential surface of this paper bag 21 serves as a filter, and dust in the air that is sucked in is filtered and collected on the inner surface. Dust can be broadly classified into coarse dust, fibrous dust, and fine dust, and if the fine dust among them adheres to the inner surface of the paper bag 21, the paper bag 21 will become clogged, and its breathability will be significantly reduced. Therefore, when the +1 acid deposition of this fine dust reaches a certain point, it is necessary to remove the dust by some method.

In the vacuum cleaner according to the present invention, an air intake hole 28 separate from the hose connection hole 28 is provided on the top surface of the dust box 20, as shown in FIG. It can be opened and closed freely.

A paper bag 21 and an inflatable body 30 are attached to the outside of the first box 20. During normal use, by keeping the air intake hole 28 closed with the lid 28 as shown in FIG. 3, the paper bag 21 is sufficiently expanded inside the dust box 20 to obtain the maximum filter area. There is.

When the paper bag 21 becomes clogged with dust that has been inhaled due to continued use, the lid 29 can be slid to open the air intake hole 28 to allow outside air to flow into the inflatable body 30. Due to negative pressure, -expanding body 30
expands. Therefore, the pressure of this expanding body can conversely compress and deform the paper bag, making it possible to remove dust more completely and effectively than the method used in conventional vacuum cleaners, which removes dust by applying slight vibrations to the paper bag. Became. Moreover, by not only removing fine dust on the inner surface of the paper bag, but also compressing other coarse dust and fibrous dust, a double effect can be obtained in that the inner volume of the paper bag can be used more effectively.

To prevent dust inside the paper bag from flowing back to the hose side due to compressive deformation of the paper bag, attach the lid 3 to the hose connection hole 26 to increase the negative pressure inside the dust box. It is more effective if

The structure of the lid 28 provided on the air intake hole 28 of the inflatable body is as shown in Figure 5A, mouth.If the lid is a sliding type that opens and closes the air intake hole of the dust box, the air intake as shown in Figure 2186 is used. If the lid is pivoted around the pivot on the dust box, like the hole 32 and the lid 33, or the air intake hole 34 and the lid 35 shown in Figure 7A, As a valve-type lid using the attached/<ne,
Structures such as those shown in FIGS. 8 to 10 may also be used. 3
B, 38.40 is the air intake hole, 37.38.41 is the lid. In the case of a valve system that uses a spring, by adjusting the spring constant and spring load, if a certain amount of pressure loss occurs in the paper bag,
It is also possible for the valve to operate automatically and deform the paper bag to remove dust.

In the examples shown in FIGS. 3 and 4, the cover 29 of the air intake hole 28 and the i31 of the hose connection hole 2B are provided independently from each other, but
If these lids are interlocked and the opening of the air intake hole lid is synchronized with the closing of the hose connection hole lid, the negative pressure inside the dust box will constantly increase, making it more effective.

Furthermore, if the air intake hole 28 and the exhaust hole 22 are connected so as to guide the exhaust air from the motor fan 1B to the expansion body 21 instead of outside air, positive pressure of the exhaust gas is applied inside the expansion body 30, increasing the force of expansion. , the dust removal effect increases.

Effects of the Invention The vacuum cleaner according to the present invention has a simple mechanism in which a dust box containing a paper bag serving as a dust collection filter and collection container is provided with an inflatable body having an air intake hole that communicates with outside air or exhaust air and can be opened and closed. The inflatable body is inflated using the negative pressure 1 in the dust box or the positive pressure caused by exhaust air. Therefore, the expansion body compresses the paper bag, effectively removing dust from the inner surface of the paper bag, and compressing the dust inside the paper bag to increase its practical volume.

[Brief explanation of drawings]

Fig. 1 is a schematic structural diagram of a conventional paper bag type vacuum cleaner, Fig. 2 is an enlarged sectional view of a dust removal device, and Fig. 3 is a sectional view of main parts of a vacuum cleaner according to an embodiment of the present invention. The air intake hole is shown in a closed state. FIG. 4 is a sectional view of the same essential part, showing a state in which the hose connection hole is closed. Figure 5 A, the mouth is an enlarged sectional view of the cover of the air intake hole, Figure 6 is an enlarged perspective view showing another embodiment of the same, Figures 7 to 10 A, the mouth is the air intake hole, respectively. In the enlarged cross-sectional view showing an embodiment with a difference, A shows a closed state and a mouth shows an open state. 18...Vacuum cleaner main body 19...Motor fan 20
...Dust box 21...Paper bag 22...Exhaust hole 26...Hose connection hole 28.32.34.36.38.40...Air intake hole 29.33.35.37.38. 41... Lid 30...
- Expanding body 31...Lid agent Patent attorney Oshima -Ko Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Scope of Claims] (1) It has a main body of a vacuum cleaner with a built-in motor fan, and a dust box with a built-in paper bag as a dust collection filter and collection container that communicates with a hose connection hole for dust suction, A vacuum cleaner characterized in that an inflatable body is provided on the outside of a paper bag and has an air intake hole that communicates with outside air or exhaust air and can be opened and closed. (2) The vacuum cleaner according to claim 1, wherein the hose connection hole has a cover that can be opened and closed. (3) The vacuum cleaner according to claim 2, wherein a lid that opens and closes in conjunction with the air intake hole is used as the lid of the hose connection hole. (0) A vacuum cleaner according to claim 1, in which the air intake hole connected to the exhaust hole of the motor fan is used as the air intake hole. The vacuum cleaner according to claim 1, which uses a sliding lid that opens and closes the air intake hole. (8) The lid of the air intake hole is a lid that rotates around a pivot on the dust box. (7) The vacuum cleaner according to claim 1, in which a valve-type lid using a spring attached to a dust box is used as a cover for the air intake hole. Vacuum cleaner.