JPS6249058B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a vacuum cleaner that can discharge accumulated dust from the bottom surface of a dust case.

[Prior Art] Conventionally, as shown in Japanese Utility Model Publication No. 52-19416, this type of vacuum cleaner has been equipped with a plurality of inner and outer parts centered around one axis in the vertical direction in a recess that is open above the main body. There is a device in which a dust collecting body having a cylindrical filter is removably installed, and a dust collecting bag for storing dust is removably installed at the lower end of the dust collecting body.

As another example, as shown in Japanese Utility Model Application Publication No. 50-87757, a dust case is equipped with a plurality of wave-shaped cylindrical filters inside and outside centered around one axis in the vertical direction, and a dust remover for removing dust from the filters. There are things with this.

[Problems to be Solved by the Invention] However, while the former and latter conventional filters can efficiently perform dust suction by using a plurality of inner and outer cylindrical filters, they are difficult to deal with accumulated dust. In particular, it is difficult to easily and reliably remove dust adhering to the surface of the filter. That is, when trying to remove adhering dust reliably, the former method requires applying vibration to the dust collector by hitting the dust collector, and the latter method According to some sources, it may be necessary to operate the dust remover many times, but these methods are time-consuming and troublesome, and there is no guarantee that the attached dust can be removed reliably. If you hit the dust collector many times or operate the dust remover many times,
It is unsanitary as fine dust may scatter and pollute the surrounding area.

[Purpose of the Invention] Therefore, the present invention makes it possible to reliably remove dust adhering to the surface of a filter by a simple operation, and also to hygienically dispose of accumulated dust. It is.

[Means for Solving the Problems] In order to achieve the above-mentioned objects, the present invention particularly provides the following features:
A dust scraping plate is provided in the dust collecting container portion and is operated to move vertically by a lever protruding from the outside of the dust collecting container portion, and the dust scraping plate is arranged inside the inner filter. an annular inner part, an annular outer part disposed outside the outer filter, and a connecting part connecting the inner part and the outer part, and the inner part includes an inner part of the inner filter. A sheet-like elastic plate that is in contact with the peripheral surface is fixed, and a sheet-like elastic plate that is in contact with the outer circumferential surface of the outer filter is fixed to the outer part.

[Function] According to the above-described means, by setting the dust collection bag inside the lid and operating the electric blower with the lid closed, the dust-containing airflow sucked into the dust collection container is The dust passes through a double cylindrical filter (inside and outside), and at this time, the dust is filtered by the filter and accumulated in the dust collection container.

On the other hand, in order to dispose of the dust accumulated in the dust collection container, after removing the dust case from the main case and opening the lid, operate the lever to move the dust scraping plate downward. An elastic plate fixed to the inner annular inner part rubs the inner circumferential surface of the inner filter, and an elastic plate fixed to the outer annular outer part rubs the outer circumferential surface of the outer filter at the same time. It is possible to simultaneously remove dust adhering to each circumferential surface of the inner and outer filters, and to hygienically store the dust in the dust collection bag together with the dust that had previously accumulated in the dust collection container. .

An embodiment embodying the present invention will be described in detail below with reference to the accompanying drawings. Note that this embodiment shows the configuration of the present invention.

4 in the figure is a main case housing an electric blower 5 and a cord winding device 6;
A bowl-shaped receiving portion that opens upward is integrally formed. Reference numeral 8 denotes a bulge that protrudes further forward from the front surface of the main case 4, and its upper surface is sloped forward. A first gear 9 projects from the front surface of the main case 4 and is rotatably supported, and meshes with the cord winding device 6. Reference numeral 10 denotes a communication port formed on the upper surface of the bulge 8 so as to sandwich the first gear 9, and the communication port 10 is connected to the electric blower 5 through the communication port 10 through the inner wall of the bulge 8. An air passageway is formed that leads to.

Reference numeral 11 denotes a dust case that is removably placed and fixed on the receiving part 7 of the main part case 4, and has a cylindrical dust collecting container part 12 that opens downward. Reference numeral 13 denotes a suction port extending in a substantially L-shape, and one end thereof is open to the front surface of the dust case 11 and the other end thereof is open to the dust collection container section 12. Reference numeral 14 denotes a protruding portion that protrudes rearward from the upper part of the rear surface of the dust case 11 in correspondence with the bulging portion 8, and the lower surface of the protruding portion 14 is provided with the bulging portion when the dust case 11 is attached to the receiving portion 7. It is inclined along the upper surface of the projecting portion 8. 1
Reference numeral 5 denotes a communication port formed in the lower surface of the protruding portion 14 corresponding to the communication port 10, and reference numeral 16 indicates a cylindrical filter device disposed vertically along the inner wall of the dust collection container portion 12. , double inner and outer filters 16a, 1 located substantially concentrically with a slight gap between them.
6b. The inner filter 1
6a has a cylindrical shape whose diameter gradually increases as it goes downward, and the outer filter 16
b has a cylindrical shape whose diameter gradually decreases as it goes downward. The lower end side of the space sandwiched between the inner and outer double filters 16a, 16b is closed by a filter frame 17 provided so as to bridge the lower ends of the inner and outer double filters 16a, 16b. The double inner and outer filter 16
The upper ends of a and 16b are the inner and outer double filters 1.
The space sandwiched between 6a and 16b is integrally fixed to the dust collecting container portion 12 so as to be able to communicate with the communication port 15 leading to the electric blower 5. The inner and outer double filters 16a and 16b are made of a material such as filter paper or nonwoven fabric.

18 is a second gear rotatably supported by the dust case 11;
When mounted, it meshes with the first gear 9.
A final gear 19 meshes with a third gear 20 that rotates together with the second gear 18, and is rotatably supported around the other end of the suction port 13. 21a is the double inner and outer filter 16a, 1
These are a large number of ribs provided between the filter frames 16a and 6b, and extend from the filter frame 17 to approximately the middle position between the top and bottom of the filters 16a and 16b. 21b is a repellent body attached to the final gear 19, the lower end of which can engage with the upper end of each rib 21a;
The rib 21a and the repellent body 21b constitute a dust removal device.

Reference numeral 22 denotes a dust scraping plate disposed inside the dust collection container section 12, which includes a cylindrical section 22a that surrounds the other end of the suction port 13 and extends in the vertical direction;
an annular inner part 22b extending substantially horizontally from the outer periphery of 2a toward the inner filter 16a; an annular outer part 22c located between the outer filter 16b and the dust collection container part 12; Approximately U for connecting the inner part 22b and the outer part 22c
The connecting portion 22d has a character shape. The connecting portion 22d extends across the notch 16c formed in the filter device 16, and two connecting portions 22d are provided at opposite positions in the radial direction, as shown in FIG. There is. Reference numeral 23 denotes a sheet-like elastic plate fixed to the dust removal plate 22, and is made of rubber or a flexible synthetic resin material. The outer peripheral portion of the elastic plate 23 fixed to the upper surface of the inner part 22b is connected to the inner filter 16a as shown in FIGS. 1 and 3.
The inner circumferential portion of the elastic plate 23 extends downward along and in contact with the inner circumferential surface of the elastic plate 23, and is fixed to the upper surface of the outer portion 22c.
As shown in the figure, it extends downward along and in contact with the outer peripheral surface of the outer filter 16b. 24 is the dust scraping plate 22
It is a lever for sliding operation in the vertical direction.
The base end is fixed to the connecting part 22d, and the distal end extends upward along the outer periphery of the dust collecting container part 12 after crossing the lower end of the dust collecting container part 12, and has a knob at the distal end. 24a is formed. The knob portion 24a is provided so as to be located in a space A created between the front surface of the main case 4 and the dust collection container portion 12 when the dust case 11 is mounted on the receiving portion 7.

Reference numeral 25 denotes a lid body which covers the opening of the dust collecting container section 12 in an openable/closable manner.
25a, and is fixed to the dust collecting container section 12 on the other side by a suitable clamping device. Reference numeral 26 denotes an annular elastic body provided at a portion of the lid 25 corresponding to the opening of the dust collecting container 12 to ensure airtightness between the dust collecting container 12 and the lid 25.

Reference numeral 27 denotes a soft impermeable dust collection bag, the opening of which is removably attached to the lower end opening of the dust collection container section 12 by an elastic band 28. The lid body 25 is capable of closing the lower end opening of the dust collecting container section 12 when the bottom of the dust collecting bag 27 protrudes outside the dust collecting container section 12. The bottom of the bag 27 is accommodated in a space B created between the main case 4 and the dust container section 12 when the dust case 11 is attached to the receiving section 7. 29 is a small hole bored in the lid 25, which allows the space between the lid 25 and the dust bag 27 to communicate with the electric blower 5 when the dust case 11 is attached to the receiving part 7. It is for.

Reference numeral 30 denotes a packing fixed to the dust case 11, which ensures airtightness between the main case 4 and the dust case 11 around the communication ports 10 and 15 when the dust case 11 is attached to the receiving part 7. ensure that

In the configuration as described above, when the electric blower 5 is driven now, the suction port 13 passes through the inner and outer dual filters 16a, 16b, and the communication ports 15, 10.
Air is suctioned through the suction air, and dust contained in the suctioned air is filtered by the filter device 16 and accumulated in the dust collection container section 12.

On the other hand, in order to dispose of the dust accumulated in the dust collection container part 12, first, the dust case 1 is removed from the main part case 4.
After removing 1, release the clamp device and remove the lid 2.
5 to open it as shown in FIG. 3, and then, when the knob 24a is pinched and the lever 24 is slid downward, the dust removal plate 22 moves downward, and the annular inner side of the dust removal plate 22 moves downward. The elastic plate 23 fixed to the inner part 22b rubs the inner circumferential surface of the inner filter 16a, and the elastic plate 23 fixed to the outer annular outer part 22c rubs the outer circumferential surface of the outer filter 16b, respectively. Therefore, it is possible to simultaneously and reliably remove the dust adhering to the respective peripheral surfaces of the inner and outer filters 16a and 16b, and the dust that has been accumulated in the dust collection container section 12 in advance can be removed from the dust collection bag 27.
It can be stored hygienically all at once. When the lever 24 is slid downward, the dust container section 12
Since the connecting portion 22d protruding further downward from the lower end of the dust collection bag 27 spreads out the dust collection bag 27 in advance, dust easily moves from the dust collection container portion 12 into the dust collection bag 27.

After removing the dust-filled bag 27 from the dust case 11 and throwing it away, insert a new dust bag 27 into the dust case 1.
1, and then, with the bottom of the dust collection bag 27 protruding outside the dust collection container section 12, the opening of the dust collection container section 12 is closed with the lid body 25, and the dust case 11 is then placed in the receiving section 7. Once attached, it can be used as a vacuum cleaner again.

When the cord winding device 6 rotates as the cord is taken in and taken out from the cord winding device 6, the rotation is transmitted to the final gear 19 via the first, second, and third gears 9, 18, and 20. As the final gear 19 rotates, the repelling body 21b repels the upper part of each rib 21a, and the vibration generated at this time removes dust from the filter device 16.

Now, if we closely observe the flow of air flowing in from the suction port 13, we will see that it flows from the suction port 13 into the dust collection container part 1
The air flow that has flowed into the interior of the air filter 2 is guided by the cylindrical portion 22d and flows toward the lid 25, collides with the lid 25 and returns to the suction port 13, and then passes through the inner filter 16a and then returns to the suction port 13. , after passing between the lower end of the filter device 16 and the lid 25, the outer filter 16
flows through b. At this time, air stagnation occurs in the space between the outer periphery of the cylindrical portion 22a and the inner filter 16a, and the dust filtered by the inner filter 16a is accumulated in that area. Further, since the suction air flow flows upward, the dust filtered by the outer filter 16b is accumulated sequentially from the upper part to the lower part.

In general, filters made of filter paper or non-woven fabric have higher ventilation resistance per unit area than, for example, cloth filters, and therefore it is necessary to increase the filtration area of the filter in order to reduce the ventilation resistance of the entire filter. There is.

Conventionally, in order to increase the filtration area of a filter, the filter has been folded into pleats. In such a folded filter, dust that has entered between the folds of the filter is difficult to separate from the filter, and even if the filter is removed from dust, it is difficult to clear the filter from clogging.

However, in this embodiment, the dust collection container section 1
2 is formed into a cylindrical shape, and the filter is arranged flat along the inner wall of the dust collecting container portion 12.
The filtration area of the filter can be increased without folding the filter, and furthermore, in this embodiment, the filter is constructed by double-layered inner and outer filters 16a and 16b located approximately concentrically with a slight gap between them. Since the device is constructed, the filtration area of the filter can be dramatically increased.

In this embodiment, since the filter device 16 is not folded, dust adhering to the filter is easily separated from the filter, and good dust suction power is always exhibited.
Since 6 is cylindrical, the structure of the dust removal device for removing dust from the filter device 16 is simple.

[Effects of the Invention] As described in detail above, the present invention is particularly advantageous in that the dust collecting container 12 has a lever 24 that is moved vertically by a lever 24 that protrudes from the outer periphery of the dust collecting container 12. A dust scraping plate 22 is provided, and the dust scraping plate 22 has an annular inner part 22b arranged inside the inner filter 16a and an annular outer part 22c arranged outside the outer filter 16b. , its inner part 22b and outer part 22
A sheet-shaped elastic plate 23 that is in contact with the inner circumferential surface of the inner filter 16a is fixed to the inner part 22b, and the outer part 22c has a connecting part 22d that connects the outer filter 16a. A sheet-like elastic plate 23 is fixed in contact with the outer peripheral surface of the filter 16b.

Therefore, the double inner and outer cylindrical filter 16
By using the filters 16a, 16b,
Since the filtration area of 16b is large, not only can the best dust suction power be always exerted, but especially when disposing of accumulated dust, the dust case 11 can be removed from the main case 4 and the lid body 25 can be opened. , operate the lever 24 downward to remove the dust removal plate 22.
By a simple operation of moving the elastic plate 23 downward, the elastic plate 23 fixed to the inner annular inner part 22b will touch the inner circumferential surface of the inner filter 16a, and the elastic plate 23 fixed to the outer annular outer part 22c will touch the inner circumferential surface of the inner filter 16a. Since the outer circumferential surfaces of the outer filters 16b are rubbed at the same time, it is possible to simultaneously and reliably remove the dust adhering to the respective circumferential surfaces of the inner and outer filters 16a and 16b. The dust can be stored all at once in the dust collection bag 27 together with the dust that has been stored there. For this reason, there is no need for the troublesome operations of repeatedly hitting the dust collection container or operating the dust remover many times as in the conventional method mentioned at the beginning. There is no such thing as
It can be processed extremely hygienically.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the main parts of the vacuum cleaner, Figure 2 is a perspective view showing only the main case, Figure 3 is a cross-sectional view of the dust case showing how to dispose of dust, and Figure 4 is the same as Figure 1. 4-4 line reduced sectional view, Figure 5 is 5-5 in Figure 4
It is a line enlarged sectional view. In the figure, 4 is the main case, 5 is the electric blower, 11 is the dust case, 12 is the dust collection container, and 16a
is the inner filter, 16b is the outer filter, 1
7 is a filter frame, 22 is a dust removal plate, 22b
2 is an inner part, 22c is an outer part, 22d is a connecting part, 2
3 is an elastic plate, 24 is a lever, 25 is a lid, and 27 is a dust collection bag.

Claims (1)

[Scope of Claims] 1. A main case 4 which houses an electric blower 5 and has a receiving portion 7 at the lower front side, and a cylindrical collection unit which is removably placed and fixed on the receiving portion 7 and is open downward. A dust case 11 having a dust container part 12 is arranged inside the dust collecting container part 12 in a double cylindrical shape with an inner and outer cylinder centered around one axis in the vertical direction, and the lower end of the space between the two cylinders is a filter. A double inner and outer filter 16 is closed by a frame 17 and the upper end of the space communicates with the suction air passage of the electric blower 5.
a, 16b, a lid 25 that opens and closes the lower end opening of the dust collecting container 12, and a lid 25 that is removably attached to the lower end opening of the dust collecting container 12 inside the lid 25. In the vacuum cleaner equipped with the dust collection bag 27, the dust collection container part 12 is placed inside the dust collection container part 12.
A dust scraping plate 22 is provided which can be moved vertically by a lever 24 projecting to the outside, and the dust scraping plate 22 is attached to the inner filter 1.
an annular inner part 22b disposed inside 6a;
An annular outer part 22c disposed outside the outer filter 16b and a connecting part 22d connecting the inner part 22b and the outer part 22c are formed, and the inner filter 16a is connected to the inner part 22b.
A sheet-like elastic plate 23 that is in contact with the inner circumferential surface of the outer filter 16b is fixed, and a sheet-like elastic plate 23 that is in contact with the outer circumferential surface of the outer filter 16b is fixed on the outer part 22c. Machine.