Filter supporting structure for an upright-type vacuum cleaner

Details Filter supporting structure for an upright-type vacuum cleaner Filter supporting structure for an upright-type vacuum cleaner

2002-05-07

2004-09-21

Till, Terrence R. (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S347000, C055S495000, C055SDIG003

Reexamination Certificate

active

06792647

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to an upright-type vacuum cleaner, and more particularly, to a filter supporting structure for an upright-type vacuum cleaner.
2. Description of the Prior Art
A conventional upright-type vacuum cleaner cleans a surface to be cleaned, such as a floor or a carpet, by drawing dust and dirt entertained in air that is drawn from the outside by using a suction force generated inside of the cleaner body. As shown in
FIG. 1
, the conventional upright-type vacuum cleaner has a suction brush
1
, a body
2
rotatably connected with the suction brush
1
, and a handle
3
disposed at an upper part of the body
2
in order to allow a user to move the suction brush
1
. The body
2
is divided by a partition defining a dust-collecting chamber having a dust bag and a motor driving chamber having a motor. The dust-collecting chamber is closed by a dust cover
4
. In addition, at a side of the body
2
, there is a discharging grill
5
in fluid communication with the motor driving chamber.
A filter grill is formed at the partition in order to allow the air in the dust-collecting chamber to flow into the motor driving chamber. A filter for filtering the drawn air is installed in the filter grill. Vacuum cleaners apply various filter supporting structures into which the filter is installed.
FIG. 2
is an exploded perspective view schematically showing in detail a part of an upright-type vacuum cleaner applying a conventional filter supporting structure. As shown in
FIG. 2
, the conventional filter supporting structure includes the filter grill
31
formed at the partition
30
that divides the inside of the body
2
between the dust-collecting chamber
10
and the motor driving chamber
20
, a pair of supporting ribs
32
, one of which is shown in
FIG. 2
, disposed at both side-walls of the dust-collecting chamber
10
above the filter grill
31
, and a filter guard
50
embracing a filter
40
and installed on the filter grill
31
by being supported by the supporting ribs
32
. The filter guard
50
has a grid pattern including a plurality of holes.
According to the above filter supporting structure, the filter guard
50
embracing the filter
40
is installed on the filter grill
31
as a user pushes the filter guard
50
between the filter grill
31
and the supporting ribs
32
after installing the filter
40
in the filter guard
50
.
However, the conventional filter supporting structure needs a separate filter guard
50
to settle the filter
40
at the supporting ribs
32
, thus the production cost of the vacuum cleaner increases and the changing of the filter
40
becomes inconvenient to the user. Moreover, as the filter guard
50
has a grid pattern, the flow of the air passing through the filter
40
can be inhibited.
Furthermore, in the above conventional filter supporting structure, the supporting ribs
32
have a sharp edge, thus the dust bag can be torn by contact with the sharp edge.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a filter supporting structure for an upright-type vacuum cleaner that allows for the filter to be easily changed and reduces the production cost of the vacuum cleaner by removing the filter guard.
The above object is accomplished by providing a filter supporting structure for an upright-type vacuum cleaner according to the present invention having: a body divided by a partition into a dust-collecting chamber having a dust bag and a motor driving chamber; a filter grill formed at the partition in order to allow air to pass through the dust bag of the dust-collecting chamber and into the motor driving chamber, having a filter mounted thereon; supporting protrusions disposed at both sidewalls of the dust-collecting chamber in order to support both sides of the filter mounted on the filter grill; and a plurality of ribs disposed around the filter grill in order to support an upper side and a lower side of the filter.
Accordingly, the filter can be installed on the filter grill without the use of a separate filter guard. Therefore, the number of required elements is reduced and the filter can be easily changed.


REFERENCES:
patent: 3651536 (1972-03-01), Bolzan et al.
patent: 3668842 (1972-06-01), Batson et al.
patent: 6035486 (2000-03-01), McCormick
patent: 4430620 (1994-08-01), None
patent: 19754149 (1998-06-01), None
patent: 29813718 (1998-11-01), None
patent: 0391338 (1993-01-01), None
patent: 2746289 (1997-09-01), None
patent: 2002-136458 (2002-05-01), None

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