Stick-type vacuum cleaner

Details Stick-type vacuum cleaner Stick-type vacuum cleaner

1999-12-16

2001-11-20

Moore, Chris K. (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S351000

Reexamination Certificate

active

06317921

ABSTRACT:

CLAIM OF PRIORITY
This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C. §119 from applications for STICK-TYPE VACUUM CLEANER earlier filed in the Korean Industrial Property Office on Aug. 13, 1999 and there duly assigned Ser. No. 33340/1999, and for STICK-TYPE VACUUM CLEANER earlier filed in the Korean Industrial Property Office on Aug. 13, 1999 and there duly assigned Ser. No. 33341/1999.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a vacuum cleaner, and more particularly to a stick-type vacuum cleaner enabling a user to clean recessed places such as a stairway, etc. more easily.
2. Description of the Prior Art
FIG. 1A
shows one example of a conventional stick-type vacuum cleaner.
FIGS. 1B and 1C
are detailed views of the main portions shown in FIG.
1
A. As shown, the conventional stick-type vacuum cleaner includes a body
10
, a dust collecting cup
20
, a motor-fan system
30
, and a handle
40
.
The body
10
includes first and second housings
11
and
12
which are coupled with each other by coupling means (not shown) such as screws, etc. The first and second housings
11
and
12
form a space therebetween by being coupled with each other, and in the space defined between the first and second housings
11
and
12
, the motor-fan system
30
is arranged.
A suction pipe
14
is formed on one side of the second housing
12
, having a suction channel
13
therein. An upstream portion of the suction pipe
14
is selectively connected with a brush assembly
50
for cleaning a floor, and an auxiliary tool
50
′ (See
FIG. 2
) for cleaning recessed places.
The dust collecting cup
20
is detachably connected with one side of the body
10
, and as shown in
FIG. 1C
, the dust collecting cup
20
includes a suction port
15
communicated with the suction channel
13
. The suction port
15
has a valve plate
25
for preventing a back flow of dust which is drawn into the dust collecting cup
20
.
A filter
24
is arranged at an outlet portion of the dust collecting cup
20
, to filter out the dust entrained in the air, and to collect the dust.
The motor-fan system
30
functions to generate an air flow moving through the brush assembly
50
and the suction channel
13
, and then into the dust collecting cup
20
. A filter
17
is positioned at an upstream portion of the motor-fan system
30
, to prevent any dust from being sucked into the motor-fan system
30
.
A plurality of discharge slots
16
are formed on the first housing
11
, to permit the air, which is drawn into the body
10
by the motor-fan system
30
, to be discharged out therethrough. Further, an auxiliary handle
18
is formed on the first housing
11
for enabling the user to handle the vacuum cleaner more easily when he/she cleans recessed places such as stairs, etc.
As shown in
FIG. 1B
, at the front lower side of the dust collecting cup
20
, a detaching button
22
having a hook
21
is biased outward by a spring
23
. On the second housing
11
, an interlocking portion
21
′ is formed at the position corresponding to the hook
21
to be interlocked with the hook
21
of the detaching button
22
. Accordingly, the dust collecting cup
20
is detachably mounted on one side of the body
10
by the detaching button
22
.
In the conventional stick-type vacuum cleaner constructed as above, when the motor-fan system
30
is operated, an air flow is generated, and the air flows through the brush assembly
50
, the suction channel
13
, and the suction port
15
, and then into the dust collecting cup
20
.
The dust is entrained in the air while the air is drawn into the body
10
of the vacuum cleaner through the brush assembly
50
, and flows through the suction channel
13
, the suction port
15
, and then into the dust collecting cup
20
, where the dust is finally collected by the filter formed therein.
Accordingly, in order to clean the floor, the user holds the handle
40
of the vacuum cleaner, and keeps tight contact of the lower surface of the brush assembly
50
with the floor, while moving the vacuum cleaner. Automatically, the floor cleaning process is performed as the dust on the floor is suctioned into the vacuum cleaner.
Meanwhile, in order to clean the recessed places such as stairs and gaps between floor boards, etc., the user separates the brush assembly
50
from the suction pipe
14
, and fits the auxiliary tool
50
′ to the suction pipe
14
(See FIG.
2
). Then, the user performs the cleaning process, moving the vacuum cleaner while holding the handle
40
and the auxiliary handle
18
.
According to the conventional stick-type vacuum cleaner constructed as above, however, it is bothersome for the user to clean the recessed places or the gaps with the auxiliary tool
14
, since the user has to separate the brush assembly
50
and fixes the auxiliary tool
50
′ with respect to the suction pipe
14
whenever he/she wants to use the auxiliary tool
50
′.
Further, according to the conventional stick-type vacuum cleaner constructed as above, while the user performs the cleaning process with the auxiliary tool
50
′ as shown in
FIG. 2
, the user has to keep carrying the vacuum cleaner, which is quite heavy, by holding the handle
40
and the auxiliary handle
18
with both hands.
SUMMARY OF THE INVENTION
The present invention has been developed to overcome the above-mentioned problems of the prior art, and accordingly, it is an object of the present invention to provide a stick-type vacuum cleaner enabling a user to perform a cleaning process by using an auxiliary tool without separating the brush assembly from the suction pipe.
Another object of the present invention is to provide a stick-type vacuum cleaner enabling a user to perform a cleaning process by using the auxiliary tool without having to carrying the vacuum cleaner by holding the vacuum cleaner with both hands during the cleaning process.
The above object is accomplished by a stick-type vacuum cleaner including: a dust collecting cup having a suction port formed thereon; a body having main and auxiliary suction channels which are communicated with the suction port; an adaptor body connected to the body, and having a connecting channel communicated with the auxiliary suction channel; a valve rotatably connected with the adaptor body at a position where the main and auxiliary suction channels meet, for selectively communicating the main suction channel and the auxiliary suction channel with the suction port; and a motor-fan system for generating an air flow which moves through the main and auxiliary channels, and then into the dust collecting cup.
Here, the adaptor body includes a valve separating prevention protrusion to be fitted in a recess formed on the valve, for preventing the separation of the valve from the adaptor body.
Further, the adaptor body includes a pair of valve turning prevention protrusions, between which locking protrusions formed on the valve are selectively placed to communicate the main suction channel or the auxiliary suction channel with the suction port.
Further, the above object is accomplished by a stick-type vacuum cleaner according to the present invention, including: a body having main and auxiliary suction channels; a dust collecting cup having main and auxiliary suction ports which are communicated with the main and auxiliary suction channels, respectively; a flexible hose arranged to be communicated with the auxiliary suction channel, the flexible hose whose outlet portion is attached to the auxiliary tool; means for selectively blocking the main suction channel; means for selectively blocking an air suction through the auxiliary suction channel; and a motor-fan system for generating an air flow which moves through the main suction channel and the auxiliary suction channel, and then into the dust collecting cup.
Here, the main suction channel blocking means is a valve formed on the main suction channel, and the means for blocking the air suction through the auxilia

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