U.S. patent application number 12/699982 was filed with the patent office on 2010-10-28 for nozzle assembly for vacuum cleaner.
This patent application is currently assigned to SAMSUNG GWANGJU ELECTRONICS CO., LTD.. Invention is credited to Byung-Jo Lee.
Application Number | 20100269290 12/699982 |
Document ID | / |
Family ID | 42245364 |
Filed Date | 2010-10-28 |
United States Patent
Application |
20100269290 |
Kind Code |
A1 |
Lee; Byung-Jo |
October 28, 2010 |
NOZZLE ASSEMBLY FOR VACUUM CLEANER
Abstract
A nozzle assembly for a vacuum cleaner includes a case having an
inlet through which a dirt is drawn in from a surface to be cleaned
and an outlet, a drum brush that is rotatably mounted in an inner
space of the case, and a rotation preventing member that is
disposed between an inner wall of the case and the drum brush and
prevents the dirt from being rotated along the drum brush.
Inventors: |
Lee; Byung-Jo;
(Gwangju-City, KR) |
Correspondence
Address: |
OHLANDT, GREELEY, RUGGIERO & PERLE, LLP
ONE LANDMARK SQUARE, 10TH FLOOR
STAMFORD
CT
06901
US
|
Assignee: |
SAMSUNG GWANGJU ELECTRONICS CO.,
LTD.
|
Family ID: |
42245364 |
Appl. No.: |
12/699982 |
Filed: |
February 4, 2010 |
Current U.S.
Class: |
15/383 |
Current CPC
Class: |
A47L 9/0477
20130101 |
Class at
Publication: |
15/383 |
International
Class: |
A47L 5/26 20060101
A47L005/26 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 23, 2009 |
KR |
2009-35503 |
Claims
1. A nozzle assembly for a vacuum cleaner, comprising: a case
having an inlet through which a dirt is drawn in from a surface to
be cleaned, and an outlet; a drum brush that is rotatably mounted
in an inner space of the case; and a rotation preventing member
that is disposed between an inner wall of the case and the drum
brush and prevents the dirt from being rotated along the drum
brush.
2. The nozzle assembly of claim 1, wherein the rotation preventing
member is disposed opposite to the outlet, and the drum brush is
disposed between the rotation preventing member and the outlet.
3. The nozzle assembly of claim 2, wherein the rotation preventing
member is disposed in a position higher than a center of the drum
brush.
4. The nozzle assembly of claim 1, wherein the rotation preventing
member protrudes from the inner wall of the case toward the center
of the drum brush.
5. The nozzle assembly of claim 4, wherein the rotation preventing
member extends along a longitudinal direction of the drum
brush.
6. The nozzle assembly of claim 1, wherein the dirt is guided from
the inlet to the outlet either along a first flow path that enables
the dirt to move from the inlet directly to the outlet, or along a
second flow path that enables the dirt to move from the inlet to
the outlet via the rotation preventing member.
7. The nozzle assembly of claim 1, further comprising a discharge
guide member that encloses at least a portion of the drum brush to
guide the dirt blocked by the rotation preventing member toward the
outlet.
8. The nozzle assembly of claim 7, wherein the discharge guide
member has an end that is disposed adjacent to the rotation
preventing member.
9. The nozzle assembly of claim 8, wherein the end of the discharge
guide member is perpendicular to one side of the rotation
preventing member.
10. The nozzle assembly of claim 7, wherein the discharge guide
member encloses an upper portion of the drum brush.
11. The nozzle assembly of claim 7, wherein the discharge guide
member extends along a longitudinal direction of the drum
brush.
12. The nozzle assembly of claim 7, wherein the dirt is guided from
the inlet to the outlet either along a first flow path that enables
the dirt to move from the inlet directly to the outlet, or along a
second flow path that enables the dirt to move from the inlet to
the outlet via the rotation preventing member.
13. The nozzle assembly of claim 12, wherein the second flow path
comprises: a first sub flow path in which the dirt is guided toward
the rotation preventing member along a space between the discharge
guide member and the drum brush; a second sub flow path in which
the dirt comes into contact with the rotation preventing member so
that a moving direction of the dirt is converted; and a third sub
flow path in which the dirt is guided toward the outlet along a
space between the discharge guide member and the case.
14. The nozzle assembly of claim 1, wherein the rotation preventing
member comprises a plurality of bristles.
15. The nozzle assembly of claim 1, wherein the case comprises an
upper case and a lower case having the inlet, and the rotation
preventing member is mounted on an inner wall of the upper
case.
16. The nozzle assembly of claim 1, wherein the case comprises an
upper case and a lower case having the inlet, and the rotation
preventing member is mounted on an inner wall of the lower case.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit under 35 U.S.C.
.sctn.119(a) from Korean Patent Application No. 10-2009-0035503,
filed on Apr. 23, 2009, in the Korean Intellectual Property Office,
and the entire disclosure of which is incorporated herein by
reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present disclosure relates to a nozzle assembly for a
vacuum cleaner, and more particularly, to a nozzle assembly for a
vacuum cleaner in which a drum brush is mounted.
[0004] 2. Description of the Related Art
[0005] Vacuum cleaners draw in materials to be cleaned, such as
dust or dirt, from a surface to be cleaned using a suction force,
and remove the drawn-in materials. In general, vacuum cleaners are
classified into canister type vacuum cleaners and upright type
vacuum cleaners.
[0006] An upright type vacuum cleaner is configured in which a
cleaner main body is connected directly to a nozzle assembly in
contact with a surface to be cleaned. Additionally, in most of
these upright type vacuum cleaners, a drum brush is mounted in the
nozzle assembly in order to increase the cleaning efficiency. The
drum brush rotates at a high speed and is in contact with the
surface to be cleaned, so that dirt or dust may be separated from
the surface to be cleaned, and that the separated dirt or dust may
flow in a dust-collector included in the cleaner main body through
the nozzle assembly.
[0007] However, when the nozzle assembly having the drum brush is
used, a part of the dirt or dust drawn into the nozzle assembly may
be made to rotate by a rotational force of the drum brush rotating
at the high speed, while being attached to the drum brush or
floating.
[0008] Accordingly, the dirt or dust is rotated along the drum
brush, and thus it is impossible for the dirt or dust to flow in
the dust-collector included in the cleaner main body, which results
in a reduction in the cleaning efficiency.
SUMMARY OF THE INVENTION
[0009] The present disclosure has been developed in order to solve
the above described and other problems in the related art.
Accordingly, an aspect of the present disclosure is to provide a
nozzle assembly for a vacuum cleaner that is capable of reducing an
amount of dirt, which is rotated along a drum brush, thereby
increasing a cleaning efficiency.
[0010] The above aspect is achieved by providing a nozzle assembly
for a vacuum cleaner, including a case having an inlet through
which a dirt is drawn in from a surface to be cleaned, and an
outlet; a drum brush that is rotatably mounted in an inner space of
the case; and a rotation preventing member that is disposed between
an inner wall of the case and the drum brush and prevents the dirt
from being rotated along the drum brush.
[0011] The rotation preventing member may be disposed opposite to
the outlet and the drum brush may be disposed between the rotation
preventing member and the outlet.
[0012] The rotation preventing member may be disposed in a position
higher than a center of the drum brush.
[0013] The rotation preventing member may protrude from the inner
wall of the case toward the center of the drum brush.
[0014] The rotation preventing member may extend along a
longitudinal direction of the drum brush.
[0015] The dirt may be guided from the inlet to the outlet either
along a first flow path that enables the dirt to move from the
inlet directly to the outlet, or along a second flow path that
enables the dirt to move from the inlet to the outlet via the
rotation preventing member.
[0016] The nozzle assembly may further include a discharge guide
member that encloses at least a portion of the drum brush to guide
the dirt blocked by the rotation preventing member toward the
outlet.
[0017] An end of the discharge guide member may be disposed
adjacent to the rotation preventing member.
[0018] The end of the discharge guide member may be perpendicular
to one side of the rotation preventing member.
[0019] The discharge guide member may enclose an upper portion of
the drum brush.
[0020] The discharge guide member may extend along a longitudinal
direction of the drum brush.
[0021] The second flow path may include a first sub flow path in
which the dirt is guided toward the rotation preventing member
along a space between the discharge guide member and the drum
brush, a second sub flow path in which the dirt comes into contact
with the rotation preventing member so that a moving direction of
the dirt is converted, and a third sub flow path in which the dirt
is guided toward the outlet along a space between the discharge
guide member and the case.
[0022] The rotation preventing member may include a plurality of
bristles that remove dirt from the drum brush.
[0023] The case may include an upper case and a lower case having
the inlet, and the rotation preventing member may be mounted on an
inner wall of the upper case.
BRIEF DESCRIPTION OF THE DRAWING FIGURES
[0024] These and/or other aspects and advantages of the disclosure
will become apparent and more readily appreciated from the
following description of the embodiments, and accompanying drawings
in which:
[0025] FIG. 1 is a perspective view illustrating a vacuum cleaner
according to an exemplary embodiment of the present disclosure;
[0026] FIG. 2 is a sectional view illustrating a nozzle assembly
included in the vacuum cleaner illustrated in FIG. 1;
[0027] FIG. 3 is a sectional view, similar to FIG. 2, explaining a
second flow path illustrated in FIG. 2; and
[0028] FIG. 4 is a sectional view illustrating another embodiment
of a nozzle assembly according to the present disclosure.
[0029] Throughout the drawings, like reference numerals will be
understood to refer to like parts, components and structures.
DETAILED DESCRIPTION OF THE INVENTION
[0030] Hereinafter, a vacuum cleaner according to an exemplary
embodiment of the present disclosure will now be described in
greater detail with reference to the accompanying drawing
figures.
[0031] FIG. 1 is a perspective view illustrating a vacuum cleaner
according to an exemplary embodiment of the present disclosure.
[0032] Referring to FIG. 1, the vacuum cleaner includes a main body
100 and a nozzle assembly 200.
[0033] The main body 100 includes a suction motor unit 110, a
dust-collector 120, and a handle 130.
[0034] The suction motor unit 110 is disposed in a lower portion of
the main body 100, and includes a suction motor (not illustrated)
as a vacuum source to generate a suction force. The suction motor
is disposed in the suction motor unit 110.
[0035] The dust-collector 120 is disposed above the suction motor
unit 110, and separates dirt and dust (hereinafter, is referred to
as dirt) from air drawn in through the nozzle assembly 200 and
collects the separated dirt. The dust-collector 120 according to
the present disclosure is a cyclone dust-collector to whirl the
drawn-in air and to centrifugally separate the dirt from the
drawn-in air. However, the vacuum cleaner according to the present
disclosure may include other types of dust-collector for example a
dust-collector using a dust bag, instead of or in addition to the
dust-collector 120.
[0036] The handle 130 is detachably mounted to an upper end of the
main body 100, so that a user may easily move the vacuum cleaner to
a desired position using the handle 130. Additionally, the vacuum
cleaner of FIG. 1 may also be used as a canister-type vacuum
cleaner by detaching the handle 130 from the main body 100,
although not related to the aspect of the present disclosure. In
more detail, when the handle 130 is attached to the main body 100
as illustrated in FIG. 1, the vacuum cleaner may be used as an
upright-type vacuum cleaner, or when the handle 130 is detached
from the main body 100, the vacuum cleaner may be used as a
canister-type vacuum cleaner.
[0037] To allow the vacuum cleaner to be used as both a
canister-type vacuum cleaner and an upright-type vacuum cleaner,
the main body 100 includes a first connection hose 140 for fluid
communication between the nozzle assembly 200 and the
dust-collector 120 in upright cleaning mode, and a second
connection hose 150 for fluid communication between the handle 130
and the dust-collector 120 in canister cleaning mode. Additionally,
the main body 100 includes a flow path switch unit (not
illustrated) disposed in a rear side thereof to switch a flow path
so that the dust-collector 120 may fluidly communicate with the
nozzle assembly 200 or the handle 130 selectively according to
whether the handle 130 is attached or detached to or from the main
body 100.
[0038] In more detail, if the handle 130 is attached to the main
body 100, that is, if the vacuum cleaner is used in the upright
cleaning mode, the dust-collector 120 may fluidly communicate with
the nozzle assembly 200 by the flow path switch unit, so that the
dirt and air may be drawn into the dust-collector 120 from the
surface to be cleaned through the nozzle assembly 200.
Alternatively, if the handle 130 is detached from the main body
100, that is, if the vacuum cleaner is used in the canister
cleaning mode, the dust-collector 120 may fluidly communicate with
the handle 130 by the flow path switch unit, so that the dirt and
air may be drawn into the dust-collector 120 from the surface to be
cleaned, through another nozzle (not illustrated) connected to a
first end of the handle 130. In this situation, the air drawn into
the dust-collector 120 through the nozzle assembly 200 or through
the other nozzle connected to the first end of the handle 130 may
be discharged to the outside through the suction motor unit 110,
after a dust separating operation is finished in the dust-collector
120.
[0039] Reference numeral 160 of FIG. 1 indicates a pair of main
wheels (only one shown), which is disposed on a lower end of the
main body 100 at opposite sides of the main body, to easily move
the vacuum cleaner according to the present disclosure.
[0040] The nozzle assembly 200 is in contact with the surface to be
cleaned, and draws in air along with the dirt from the surface to
be cleaned using the suction force provided by the suction motor
unit 110. The nozzle assembly 200 is rotatably connected to the
main body 100, and thus a user may operate the vacuum cleaner for
cleaning by tilting the main body 100 with respect to the nozzle
assembly 200 at various angles.
[0041] Hereinafter, the nozzle assembly 200 will be described in
greater detail with reference to FIGS. 2 and 3. FIG. 2 is a
sectional view illustrating the nozzle assembly 200 included in the
vacuum cleaner illustrated in FIG. 1, and FIG. 3 is a sectional
view, similar to FIG. 2, explaining a second flow path illustrated
in FIG. 2.
[0042] Referring to FIG. 2, the nozzle assembly 200 includes an
upper case 210, a lower case 220, an extension pipe 230, and a drum
bush 240.
[0043] The upper case 210 and the lower case 220 are engaged with
each other to form an inner space in the nozzle assembly 200 and to
form an external appearance of the nozzle assembly 200. The lower
case 220 includes an inlet 221, which is formed in a front portion
thereof and through which dirt and air flow in the nozzle assembly
200 from the surface to be cleaned. Additionally, the lower case
220 includes a pair of sub-wheels 222 (only one shown) that are
disposed on a bottom surface thereof to assist movement of the
nozzle assembly 200 on the surface to be cleaned.
[0044] The extension pipe 230 is installed in the inner space in
the nozzle assembly 200 in order to guide the dirt and air flowing
in the nozzle assembly 200 through the inlet 221 toward the first
connection hose 140 (see FIG. 1) and the second connection hose 150
(see FIG. 1). A first end of the extension pipe 230 is disposed
near the inlet 221 of the nozzle assembly 200, and a second end of
the extension pipe 230 is connected to the flow path switch unit
described above. Accordingly, the dirt and air flowing in the
nozzle assembly 200 through the inlet 221 may be guided toward the
first connection hose 140 through the extension pipe 230.
[0045] Additionally, the nozzle assembly 200 includes a guide case
211 that is disposed therein and connected to the first end of the
extension pipe 230. The guide case 211 may enable the dirt and air
flowing in the nozzle assembly 200 through the inlet 221 to flow in
the extension pipe 230. An outlet 212 of the guide case 211 is
sealed with the first end of the extension pipe 230, so that the
dirt and air drawn in the nozzle assembly 200 through the inlet 221
may flow in the extension pipe 230, rather than leaking out.
[0046] The drum brush 240 is installed in the inner space in the
nozzle assembly 200 so as to be adjacent to the inlet 221 formed on
the lower case 220. Additionally, the drum brush 240 receives a
rotational force from a drum brush driving motor (not shown), which
is disposed in the rear thereof, and is made to rotate by the
rotational force at a regular angular speed during cleaning.
[0047] The drum brush 240 includes a drum brush body 241 having a
substantially cylindrical shape, and a plurality of contact members
242 planted in all directions from an outer circumference surface
of the drum brush body 241. Each of the plurality of contact
members 242 protrudes a predetermined length from the inlet 221, so
if the drum brush 240 is rotated, the contact members 242 may
separate dirt from the surface to be cleaned. In particular, if the
surface to be cleaned is made of some kind of fabric, such as
carpet, the cleaning efficiency may be further improved by the drum
brush 240.
[0048] The nozzle assembly 200 further includes a discharge guide
member 250 and a rotation preventing member 260, as illustrated in
FIG. 2.
[0049] The discharge guide member 250 extends along the
longitudinal direction of the drum brush 240 so as to enclose an
upper portion of the drum brush 240. The discharge guide member 250
is installed in a space between the upper case 210 and the drum
brush 240, and is spaced apart a predetermined distance from the
drum bush 240. Although not illustrated in FIG. 2, the discharge
guide member 250 is connected to the upper case 210 and supported
by the upper case 210. Additionally, according to another exemplary
embodiment of the present disclosure, the discharge guide member
250 may be formed integrally with the upper case 210. As
illustrated in FIG. 2, the discharge guide member 250 encloses
about 1/3 of the circumference of the drum brush 240, but
dimensions of the drum brush 240 enclosed by the discharge guide
member 250 may be changed according to exemplary embodiments. In
addition, a left end 251 of the discharge guide member 250 may
desirably be disposed in a position higher than a center 243 of the
drum brush 240.
[0050] The rotation preventing member 260 includes a base member
261 and a plurality of bristles 262.
[0051] The base member 261 protrudes from an inner wall of the
upper case 210 along the length of the drum brush 240, toward
substantially the center 243 of the drum brush 240. Accordingly,
the base member 261 is substantially perpendicular to the left end
251 of the discharge guide member 250. Additionally, since the base
member 261 is disposed near the left end 251 of the discharge guide
member 250, the base member 261 is also disposed in a position
higher than the center 243 of the drum brush 240.
[0052] The plurality of bristles 262 are planted in an end of the
base member 261 adjacent to the drum brush 240. The plurality of
bristles 262 protrude toward the center 243 of the drum brush 240.
When the drum brush 240 is rotated, the plurality of bristles 262
may brush the dirt from the outer circumference surface of the drum
brush body 241 or from the contact member 242.
[0053] As described above, the nozzle assembly 200 includes the
discharge guide member 250 and the rotation preventing member 260,
and thus two inner flow paths 270 may be formed in the nozzle
assembly 200. In more detail, the nozzle assembly 200 includes a
first flow path 271 extending from the inlet 221 directly to the
outlet 212, and a second flow path 272 extending from the inlet
221, sequentially through an inner surface and an outer surface of
the discharge guide member 250 and to the outlet 212.
[0054] In this situation, since the second flow path 272 makes a
detour around the discharge guide member 250, the second flow path
272 is greater in length than the first flow path 271.
Additionally, the two inner flow paths 270 may be divided into the
first flow path 271 and the second flow path 272 in the vicinity of
a right end 252 of the discharge guide member 250, and the first
flow path 271 and the second flow path 272 may then be combined in
the vicinity of the outlet 212 of the guide case 211.
[0055] Therefore, the air and dirt A.sub.1 (see FIG. 2) that are
drawn into the nozzle assembly 200 may be partially discharged to
the extension pipe 230 along the first flow path 271, and the
remainder may be discharged to the extension pipe 230 along the
second flow path 272.
[0056] Referring to FIG. 3, the second flow path 272 includes a
first sub flow path 273, a second sub flow path 274, and a third
sub flow path 275.
[0057] The first sub flow path 273 enables the dirt drawn in
through the inlet 221 to flow in the rotation direction of the drum
brush 240 along the inner surface of the discharge guide member
250. In more detail, the first sub flow path 273 is a path along
which the dirt is moved in a space between the discharge guide
member 250 and the circumference of the drum brush 240 by the
rotational force of the drum brush 240.
[0058] Additionally, the second sub flow path 274 is a path in
which the movement direction of the dirt is converted by the
rotation preventing member 260. More specifically, the dirt moved
along the first sub flow path 273 collides with one side of the
base member 261 of the rotation preventing member 260 in the second
sub flow path 274, and thus a great deal of kinetic energy
transferred from the drum brush 240 may be lost.
[0059] The third sub flow path 275 enables the dirt that lost
kinetic energy due to the collision with the rotation preventing
member 260, to be moved along the outer surface of the discharge
guide member 250 by the suction force transferred from the main
body 100 in a direction opposite to the first sub flow path
273.
[0060] In this situation, the left end 251 of the discharge guide
member 250 and the rotation preventing member 260 may desirably be
disposed in the position higher than the center 243 of the drum
brush 240, so that a suction force enough to guide the dirt toward
the outlet 212 may be applied to the third sub flow path 275. If
the rotation preventing member 260 is disposed below the center 243
of the drum brush 240, it is impossible to apply a sufficient
suction force to the dirt flowing along the first sub flow path
273, and thus the dirt may continue to be rotated by the drum brush
240 along the circumference of the drum brush 240.
[0061] As described above, the two flow paths, namely, the first
flow path 271 and the second flow path 272 are formed between the
inlet 221 of the lower case 220 and the outlet 212 of the guide
case 211, and accordingly it is possible to prevent a part of the
dirt drawn in the nozzle assembly 200 from the surface to be
cleaned from not being discharged to the extension pipe 230 while
being rotated along the drum brush 240. In other words, a part of
the dirt drawn in the nozzle assembly 200 may be discharged to the
extension pipe 230 along the first flow path 271, and the remainder
may be discharged to the extension pipe 230 along the second flow
path 272 formed by the discharge guide member 250 and the rotation
preventing member 260.
[0062] Therefore, it is possible to remarkably reduce an amount of
dirt drawn in the nozzle assembly 200 that is rotated along the
drum brush 240 by the rotational force of the drum brush 240 but
not discharged to the extension pipe 230. Thus, the cleaning
efficiency of the vacuum cleaner may be enhanced.
[0063] Additionally, the plurality of bristles 262 attached to one
end of the rotation preventing member 260 separate the dirt from
the outer circumference surface of the drum brush body 241 or from
the contact member 242, and accordingly, it is possible to further
increase an amount of dirt discharged to the extension pipe 230
along the second flow path 272. Therefore, the cleaning efficiency
of the vacuum cleaner may be greatly enhanced.
[0064] Hereinafter, the operation of the vacuum cleaner described
above according to the exemplary embodiment of the present
disclosure will be described with reference to FIGS. 1 and 2. The
vacuum cleaner according to the exemplary embodiment of the present
disclosure may be used as a canister-type vacuum cleaner, but an
upright-type vacuum cleaner only is now described as illustrated in
FIG. 1.
[0065] If a user operates the vacuum cleaner, the suction motor
(not illustrated) mounted in the suction motor unit 110 of the main
body 100, and the drum brush driving motor (not illustrated) in the
nozzle assembly 200 may be operated. Accordingly, the drum brush
240 mounted in the nozzle assembly 200 may be rotated at the
regular angular speed, and an external air containing the dirt may
be drawn in the nozzle assembly 200 from the surface to be cleaned,
through the inlet 221 of the lower case 220 by the suction force
exerted by the suction motor.
[0066] The air and dirt A.sub.1 (see FIG. 2), which are drawn into
the nozzle assembly 200 may be partially discharged to the
extension pipe 230 along the first flow path 271, and the remainder
may be discharged to the extension pipe 230 along the second flow
path 272 formed by the discharge guide member 250 and the rotation
preventing member 260.
[0067] As described above, the second flow path 272 is formed to
guide the dirt rotated along the drum brush 240 toward the
extension pipe 230, and thus it is possible to increase an amount
of dirt drawn in the main body 100 from the nozzle assembly 200.
Therefore, it is possible to increase the cleaning efficiency of
the vacuum cleaner.
[0068] The air containing the dirt A.sub.2 (see FIG. 2), which is
discharged to the extension pipe 230 through the first flow path
271 or the second flow path 272, may flow into the dust-collector
120 through the first connection hose 140. Subsequently, the dirt
may be centrifugally separated from the air in the dust-collector
120, the separated dirt may be collected in the dust-collector 120,
and air from which the dirt has been separated may be discharged
outside the vacuum cleaner through the suction motor.
[0069] Hereinafter, another embodiment of the nozzle assembly
according to the present disclosure will be described with
reference to FIG. 4. FIG. 4 is a sectional view illustrating
another embodiment of a nozzle assembly according to the present
disclosure.
[0070] Referring to FIG. 4, a nozzle assembly 200' includes a
discharge guide member 250' and a rotation preventing member 260'
in order to form the second flow path 272 (see FIG. 2) in the same
manner as the embodiment described above. However, a front end of a
lower case 220' of the nozzle assembly 200' extends upward higher
than the lower case 220 of the nozzle assembly 200, and
accordingly, the rotation preventing member 260' may extend from an
inner wall of the lower case 220.' Thus, the nozzle assembly 200'
is distinct from the nozzle assembly 200. Other constituents and
operations of the nozzle assembly 200' are the same as those of the
nozzle assembly 200 described above, so no further description
thereof is herein provided.
[0071] The rotation preventing members 260 and 260' include the
plurality of bristles 262 and 262' according to the exemplary
embodiments of the present disclosure as described above, but may
include the base members 261 and 261' only. In this situation, the
base members 261 and 261' may convert the movement direction of the
dirt rotated along the drum brushes 240 and 240', and accordingly
the second flow path 272 (see FIG. 2) to increase the cleaning
efficiency may also be formed.
[0072] Additionally, the vacuum cleaner for both upright and
canister modes has been described in the exemplary embodiments of
the present disclosure, but the present disclosure is also
applicable to an upright-type vacuum cleaner, or other types of
vacuum cleaner having a nozzle assembly in which a drum brush is
mounted.
[0073] Although representative exemplary embodiment of the present
disclosure has been shown and described in order to exemplify the
principle of the present disclosure, the present disclosure is not
limited to the specific exemplary embodiment. It will be understood
that various modifications and changes can be made by one skilled
in the art without departing from the spirit and scope of the
disclosure as defined by the appended claims. Therefore, it shall
be considered that such modifications, changes and equivalents
thereof are all included within the scope of the present
disclosure.
* * * * *