JPS5830541Y2 - vacuum cleaner - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a vacuum cleaner.

Generally, when using a vacuum cleaner, cotton dust adheres to some filters that have a function of capturing coarse dust, usually net filters, reducing the air suction efficiency.

Conventionally, a scraping body that scrapes cotton dust from a net filter is rotated, but since the stationary position of this scraping body is unspecified, it overlaps with the ventilation surface of the net filter, reducing ventilation efficiency. There are disadvantages such as lowering the net filter and the cotton dust that has been scraped off being attached to the net filter again.

This invention was devised in view of these points, and the purpose is to provide a vacuum cleaner that can effectively remove cotton dust from the net filter surface without impairing air permeability. It is something.

This device removes cotton dust from a net filter by sliding the cotton dust removing body, but by overlapping the frame of the cotton dust removing body and the frame of the net filter, the dust trapping surface of the net filter is This structure prevents the frame portion of the cotton dust removing body from being covered, thereby preventing a decrease in air permeability and allowing highly efficient cleaning.

A first embodiment of this invention will be explained based on FIGS. 1 to 4.

First, 1 is a main body case, and inside this main body case 1, an electric blower and a cord reel (not shown) are provided.

A dust collection case 2 is detachably attached to such a main body case 1.

A suction port 3 is formed in the front part of the dust collection case 2, and the rear part is open, and a filter unit 4 is attached to the outer circumference of the case through a backing 5 to ensure airtightness. It's broken.

This filter unit 4 houses a rosy filter 7 and a sponge filter 8 in a filter case 6, and also has a net filter 9 attached to the dust collection chamber side, which will be described later.

This net filter 9 consists of a frame body 10 made up of a plurality of vertical and horizontal crosspieces, and a net 11 positioned and integrated on the inner surface of this frame body 10.

Next, the dust collection case 2 and the filter unit 4
A dust collection chamber 12 is formed by this, and a compression plate 13 is provided on the upper part of this dust collection chamber 12 so as to be movable up and down.

A shaft portion 14 projecting upward is integrally formed on the compression plate 13, and a lead portion 15 is fixed to the upper end of the shaft portion 14, and is constantly urged upward by a compression spring 16.

Further, a cotton dust removing body 18 is rotatably attached to the edge of the compression plate 13 on the filter unit 4 side by a hinge 17, and this cotton dust removing body 18 is connected to the net filter 9 at all times. It is biased by a torsion spring (not shown).

The cotton dust removing body 18 is composed of a frame 19 having a shape that matches the upper part of the frame 10 of the net filter 9, and the interval between the frame 19 and the horizontal bars of the frame 10 is set to the compression plate. 13 and the working distance of the cotton dust remover 18.

Further, the cross-sectional shape of the frame portion 19 is triangular, and a flat portion 20 is in contact with the net filter 9, and a slope portion 21 is formed at least above.

In such a configuration, during use, air containing dust is sucked in from the suction port 3 and passes through the net filter 9, sponge filter 8, and Rossi filter 7 in order to trap dust, but the cotton dust is captured by the net filter 9. be captured first.

At this time, since the frame part 19 of the cotton dust remover 18 is positioned overlapping the frame body 10 of the net filter 9, the presence of the cotton dust remover 18 does not pose any problem for dust collection.

When a large amount of cotton dust adheres to the surface of the net filter 9 and the suction efficiency decreases, the lead part 15 is pushed to move the compression plate 13 up and down.

As a result, the dust in the dust collection chamber 12 is compressed and pushed downward, and at the same time, the cotton dust remover 18 removes the cotton dust on the surface of the net filter 9.

At this time, the cotton dust removing body 18 moves by a distance corresponding to the interval between the frame bodies 10 of the net filter 9, so the frame part 19 always passes through the ventilation area of the net 11 of the net filter 9, thereby removing the cotton dust. There is no possibility that the cotton dust will be sent to the frame 10 part and collect in the ventilation part by the net 11.

Further, the cross section of the cotton dust removing body 18 is triangular, and the slope portion 21 is particularly formed on the upper side, so that the return force of the cotton dust removing body 18 is small, and the dust removing body 18 does not become unable to return.

Therefore, dust will not accumulate on the upper surface of the compressor plate 13 when the compressor plate 13 is used in an unrestored state.

When disposing of dust, use dust collection case 2 from main case 1.
After separating the filter unit 4, the filter unit 4 is removed, but at this time, the cotton dust removing body 18 rotates in the direction in which the compressed dust in the dust collection chamber 12 is released, causing an obstacle to dust disposal. It will never become.

In addition, as shown in FIG. 4, the frame 1 of the net filter 9
If there is a shaded area in 0, the frame 1 of the cotton dust remover 18
Make 9 a similar shape.

Next, a second embodiment of this invention will be explained based on FIGS. 5 to 7.

The same parts as in the previous embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In this embodiment, an elongated hole 22 is formed in the rear part of the compression plate 13, the cotton dust removing body 18 is formed with a frame part 19 made of an elastically deformable material, and the upper part thereof has an L-shape that engages with the elongated hole 22. A hinge portion 23 is formed by two rods, and a rib 24 for preventing forward swing is integrally formed on the inner surface side to abut against the lower surface of the compression plate 13 and prevent it from falling toward the dust collection chamber 12 side. ing.

Therefore, if the frame portion 19 is kept in contact with the net filter 9 while the rib 24 for preventing forward vibration is in operation, the cotton dust can be removed in the same way as in the above case, and when the dust is thrown away, Rotates in the opening direction due to its own weight.

As mentioned above, this idea includes a slidable cotton dust removal body that removes cotton dust on the surface of the net filter in the dust collection chamber.
Since the frame of the cotton dust remover and the frame of the net filter are overlapped, the presence of the cotton dust remover does not impede ventilation during normal use. Even if the sliding stroke of the net filter is small, it is possible to remove cotton dust from the entire surface of the net filter.Also, by matching the spacing between the frame and the frame body with the working distance of the compression plate, the ventilation section of the net filter can be removed. This has the effect of preventing the accumulation of cotton dust.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway side view showing the first embodiment of this invention, Figure 2 is a perspective view showing the relationship between the net filter and the cotton dust remover, and Figure 3 is a sectional view of the frame. , FIG. 4 is a perspective view of a modified example, FIG. 5 is a longitudinal cross-sectional side view showing a second embodiment of this invention, FIG. 6 is an exploded perspective view of the compression plate and the cotton dust removing body, and FIG. FIG. 3 is a vertical side view when disposing of dust. 2...Dust collection case, 4...Filter unit, 9...Net filter, 10...
... Frame body, 12 ... Dust collection chamber, 18 ...
... Cotton dust removal body, 19 ... Frame part.

Claims (1)

[Scope of utility model registration request] 1. A net filter held by a frame body having a plurality of crosspieces and a filter unit located on the exhaust side of the net filter are provided in the dust collection chamber formed in the dust collection case, and the crosspieces and a part of the frame body are provided. A cotton dust removing body is provided with a frame portion that overlaps with the other, and is attached to the front surface of the intake side of the net filter so as to be able to slide freely and to be freely stationary at a position where the frame portion and the crosspiece of the frame body overlap. A vacuum cleaner featuring: 2. The electric appliance according to claim 1 of the utility model registration, characterized in that the working distance of the cotton dust removing body, the interval between the frames of the cotton dust removing body, and the interval between the frames of the net filter are set to be equal. Vacuum cleaner. 3. The electric vacuum cleaner according to claim 1, wherein the cross-sectional shape of the frame of the cotton dust removing body is triangular.