JPS5822689Y2 - vacuum cleaner - Google Patents

Description

[Detailed description of the invention] The present invention relates to a dust collection structure for a vacuum cleaner, and its purpose is to provide a vacuum cleaner that can obtain strong dust collection power over a long period of time with less reduction in dust collection power. It is in.

Generally, a vacuum cleaner equipped with a dust collection box is constructed as shown in FIG.

That is, 1 in the figure is a main body of a vacuum cleaner equipped with an electric blower 2 and a cord reel 3, and the main body lid 4 is pivotally mounted so that it can be opened upward.

A dust collection box 5 with an open top is detachably provided on one side of the main body 1, and a filter component 6 for closing the dust collection box 5 is provided inside the main body lid 4.

The filter component 6 includes a flat primary filter 7 facing the opening of the dust collection box 5, and a cylindrical wave-shaped secondary filter 8 disposed above the primary filter 7.

An intake pipe 9 provided on the main body lid 4 passes through the filter component 6 and opens into the dust collection box 5 at its end.

In the figure, 10 is a ventilation path, 11 is a locking member of the dust collection box 5, 12 is a backing, and 13 is a handle.

In a vacuum cleaner having such a structure, by operating the electric blower 2, air is caused to flow through the intake pipe 9, the primary filter 7, the secondary filter 8, the electric fan 2, and the outside of the main body as shown by the arrows in the figure. The secondary filter 7 removes coarse dust from the dust-containing air, and the secondary filter 8 removes fine dust, and the removed dust is collected in the dust collection box 5.

By the way, during the above-mentioned dust removal, cotton dust and dirt adhere to the lower surface of the primary filter 7, and as shown by characteristic B in FIG. I had to.

In order to remove the cotton dust adhering to the surface of the primary filter 7, it has been considered to slide something like a wiper from the end of the intake pipe 9 into contact with the surface of the primary filter 7, but the structure becomes complicated. There were also problems such as cotton dust getting tangled in the wiper.

The present invention solves the above-mentioned conventional drawbacks, and will be explained below with reference to FIG. 1 showing one embodiment.

Note that in FIG. 1, the same reference numerals as in FIG. 3 above indicate the same constituent members, and the explanation thereof will be omitted.

The characteristic structure of the present invention is that a filter component 6 is provided to close the opening of the dust collection box 5, and the filter component 6 includes a primary filter 7 facing the dust collection box 5 and a primary filter 7 located behind it. In an intake pipe 9 which penetrates through this filter component 6 and has an end opened to the dust collection box 5, the primary filter 7 and the secondary filter of the intake pipe 9 are connected to each other. A bypass filter 14 is provided in a portion located at the filter 8.

In the vacuum cleaner of the present invention having the above configuration, even if the surface of the primary filter 7 is clogged with cotton dust, there is an air flow from the bypass filter 14 to the secondary filter 8, and its dust suction power is maintained. There will be no decline.

Then, the coarse dust is removed by the side filter 14, and the surface of this side filter 14 is constantly cleaned by the suction flow in the direction of the dust collection box 5, preventing coarse dust from adhering to the side filter 14 and clogging it. The amount of dust collected can be increased as shown in characteristic A in FIG. 2.

In other words, the cleaning work can be continued until the dust collection box 5 is full of dust, and the number of times the garbage must be thrown away can be reduced, which has great practical effects.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a vacuum cleaner according to an embodiment of the present invention;
The figure is a dust suction force change characteristic diagram, and FIG. 3 is a sectional view of a conventional vacuum cleaner.

Claims (1)

[Scope of utility model registration request] A filter component is provided to close the opening of the dust collection box, and the filter component includes a primary filter facing the dust collection box and a secondary filter placed behind it, and the intake pipe is connected to the A vacuum cleaner that penetrates through a filter component and has an end opening into a dust collection box, characterized in that a side filter is provided in a portion of the intake pipe between a primary filter and a secondary filter.