JPS6018206Y2 - vacuum cleaner filter device - Google Patents

Description

[Detailed Description of the Invention] Technical Field This invention relates to a filter device for filtering dust in an electric vacuum cleaner.

Prior Art Conventional vacuum cleaners include a primary filter device having a coarse filter in the vacuum cleaner frame for filtering coarse dust such as cotton dust, and dust contained in the air that has passed through the primary filter. A secondary filter device having a fine filter for filtering fine dust, and a filter dust removal device provided on the secondary filter device to knock off dust attached to the fine filter into the vacuum cleaner frame. Common.

As the secondary filter device, the fine filter is bent into a wall shape, and the bent portion is formed into a substantially arc shape in cross section, so that the ridge line of the filter wall extends in the vertical direction. Some filters are placed in a predetermined position within a frame, and the upper and lower ends of the filter are closed with filter frames.

However, in this filter device, since the top surface of the filter frame located above the filter is formed to form a horizontal surface, fine dust in the air sucked into the vacuum cleaner accumulates on the top surface of the filter frame. Not only is it difficult to dispose of the dust outside the vacuum cleaner frame, but also, when the filter is removed, the dust accumulated on the filter may be scattered into the room, which is unsanitary.

Purpose This invention was made to eliminate the above-mentioned defects, and the purpose is to create a new electric machine that does not allow fine dust in the air sucked into the vacuum cleaner frame to accumulate on the top surface of the filter frame. An object of the present invention is to provide a filter device for a vacuum cleaner.

EXAMPLE Below, an example in which this invention is embodied in a filter device for an electric vacuum cleaner will be described with reference to the drawings. , 3 are removably connected at both upper and lower ends of corresponding surfaces.

A front cover 5 having an inlet 4 is rotatably attached to the front of the dust case 2 at its upper end, and can be opened by pressing an operation button 6.

A coarse primary filter 8 is provided in the front part of the dust case 2 via a filter frame 7, and filters air drawn in from the suction port 4 by the operation of an electric blower (not shown) in the blower case 3. The coarse dust contained therein is filtered out by this primary filter 8.

Further, a filter frame 9 is removably attached to the rear part of the dust case 2, and a fine secondary filter 10 whose planar shape is bent into a fold shape is integrally attached and molded to the front part of the filter frame 9. Fine dust contained in the air that has passed through the secondary filter 8 is filtered by the secondary filter 10.

The filter frame 9 and the secondary filter 10 constitute a filter device 11.

A filter dust remover 12 is provided on the filter frame 9 of the secondary filter 10, and is configured to blow off dust adhering to the secondary filter 10 to the lower part of the dust case 2.

That is, the filter frame 9 includes a vibrating part 13a having a plurality of elastic bodies and a base part 1 that integrally connects each vibrating part 13a.
3b is fixed at its base 13b, each vibrating part 13a is arranged between each fold of the secondary filter 10, and the lower end of each vibrating part 13a is arranged between each fold of the secondary filter 10. It protrudes backwards from.

A dust remover 17 has a pair of left and right levers 15 and a coil spring 16 attached to one of the levers 15 on the front surface of the mounting plate 14 which is fitted and fixed to the rear part of the filter frame 9.
is rotatably supported at its center, and as the dust remover 17 rotates, the coil spring 16
3a, the vibrating portion 13a is vibrated, thereby striking the secondary filter 10.

A first transmission gear 18 is rotatably supported at its central portion on the rear surface of the mounting plate 14, and the central portion of the dust remover 17 is fixed, and as the dust remover 17 rotates, the dust remover 17 is rotated. It is designed to rotate as one unit.

A support pin 19 protruding from the upper rear surface of the filter frame 9
A second transmission gear 20 is rotatably supported by and meshes with the first transmission gear 18 .

Further, a cord winding device (not shown) for winding up the power cord is provided in the blower case 3, and when both cases 2 and 3 are connected, the cord winding device rotates the cord reel. The second transmission gear 20 is rotated via a gear mechanism and a clutch mechanism of the greenhouse.

Therefore, when pulling out and winding up the power cord, the rotation of the cord reel is transmitted to the first transmission gear 18 via the gear mechanism, clutch mechanism, and second transmission gear 20, and the dust remover 17 is effectively rotated. As a result, dust adhering to the secondary filter 10 is efficiently brushed off.

Next, the configuration of the filter device 11 will be explained in detail. The filter frame 9 is made of synthetic resin material, and the first and second
As shown in the figure, an inclined portion 21 is formed at the rear portion of the upper surface, and is inclined largely downward toward the front.

A plurality of upper closing pieces 22 are provided at the front part of the inclined part 21 so as to extend forward in a finger-like manner, and close each upper end part of the pleated secondary filter 10. There is.

Each upper closing piece 22 is formed in the shape of a mountain from the front, and its ridgeline is gently sloped downward toward the front, and both left and right sides thereof form sloped surfaces 23 that are perpendicular to the ridgeline and sloped diagonally downward. .

The pleated secondary filter 1 is disposed on the lower front surface of the filter frame 9.
A plurality of lower closing pieces 24 are provided for closing the lower end of the 0, and ribs 24a are protruded from the lower surface thereof.

A plurality of filter support pieces 25 are provided on the front surface of the filter frame 9 and extend vertically along the inner surface of each front mounting portion of the secondary filter 10, and a pair of upper and lower projecting pieces 25 are provided on the rear surface of the filter frame 9.
a is formed.

Further, at the rear part of the filter frame 9, a plurality of bridging pieces 2 are provided which extend in the vertical direction along the outer surface of each rear covering part of the secondary filter 10.
6 is provided.

Therefore, during operation of the vacuum cleaner, the air that has passed through the secondary filter 8 enters between the upper surface of the filter frame 9 and the top inner surface of the dust case 2, and the fine dust contained in the air is removed from the air. Even if dust falls onto the filter frame 9 due to convection or the like, the dust will not accumulate on the top surface of the filter frame 9, and will flow along the slope 21 of the filter frame 9 and the slope 23 of the upper closing piece 22. The dust falls smoothly and accumulates at the bottom of the dust case 2.

Therefore, along with the dust removed from above the secondary filter 10 by the filter dust remover 12, the dust case 2
It can be easily thrown outside, and no dust is scattered indoors when the secondary filter 10 is removed.

Effects As detailed above, the idea is that the upper base of the filter frame has an inclined part that extends in the direction in which the folds of the filter are arranged and whose entire upper surface is inclined downward. A number of upper closing pieces protruding above the upper surface of each fold of the filter are formed on the front side, and the upper surface of each upper closing piece is sloped downward, and both sides of each ridge line are sloped diagonally downward. Due to the sloped surface, the fine dust in the air sucked into the vacuum cleaner frame does not accumulate on the top surface of the filter frame, and smoothly flows along the slope, the top surface of each upper closing piece, and the sloped surface. It can fall and be thrown out of the vacuum cleaner frame along with the dust filtered by the filter, and when the filter is removed, the dust does not scatter indoors, which is an excellent effect.

[Brief explanation of the drawing]

Figure 1 is a side view with the main parts of the vacuum cleaner cut away;
The figure is a front view showing an embodiment of this invention. 1...Vacuum cleaner frame, 9...Song filter frame,
DESCRIPTION OF SYMBOLS 10... Secondary filter, 21... Inclined part, 22... Upper closing piece, 23... Inclined surface.

Claims (1)

[Claims for Utility Model Registration] The filter 10 is folded into a pleat shape, and the filter 10 is placed in the vacuum cleaner frame 1 so that the ridge lines of the folds extend in the vertical direction, and both upper and lower ends of the filter 10 are bent. In a filter device closed by a filter frame 9, an inclined part 21 is formed at the upper base of the filter frame 9, and extends in the direction in which the folds of the filter 10 are arranged, and whose entire upper surface is inclined forwardly downward. A large number of upper closing pieces 22 are formed on the front side of the filter 21 so as to protrude above the upper surface of each fold of the filter 10, and the upper surface of each upper closing piece 22 is inclined downwardly toward the front. A filter device for an electric vacuum cleaner, characterized in that both sides have inclined surfaces 23 diagonally downward.