FIELD OF THE INVENTION
[0001] The present invention relates to a vacuum cleaner suitable for, in particular, cleaning
carpets and other flooring materials in buildings.
BACKGROUND
[0002] Typically, bag vacuum cleaners may comprise a body that is set on wheels to enable
it to follow the horizontal movements of an operator. The operator may pull the vacuum
cleaner along by means of a hose that is swivelably connected to the body, and that,
due to the suction of a motor provided in the body, carries dust and other dirt from
a nozzle end of the hose to a dust collection chamber inside the body. The dust collection
chamber may accommodate a disposable or reusable bag in which the dirt can be stored.
In order to be able to replace the dustbag when it is full, the dust collection chamber
may be accessible via a dust cover that is pivotably connected to the body. For ease
of use, the dust cover is usually located at a top side of the body when the vacuum
cleaner is in a working orientation.
[0003] To enable an operator to easily lift the vacuum cleaner, for example to transfer
it between different vertical floor levels, or to vacuum places that cannot be accessed
from floor level because the hose is too short, the vacuum cleaner may be provided
with one or more lifting handles. Such a handle may be pivotably connected to the
body, so as to allow it to be rotated back and forth between a folded position and
a raised position. In the folded position, the handle may reside close to the body
so as not to protrude there from, while it may be turned to its raised position when
lifting of the body is desired. Naturally, like the dust cover, the lifting handle
is preferably located at a top side of the body when it is in a working orientation.
[0004] In addition to the mere presence of a dust cover and a lifting handle, a desirable
vacuum cleaner may preferably fulfil some further desires. Function, for example,
prescribes that the dust collection chamber of the vacuum cleaner is as big as possible.
Generally, this translates into a vacuum cleaner wherein about one half (or less)
of the body is occupied by the motor, while the other half (or more) is occupied by
the dust collection chamber. To enable proper access to the dust collection chamber
for replacing a full dustbag accommodated therein, the pivotable dust cover must thus
extend across about half (or more) of the body. Another noteworthy functional desire
is that the lifting handle, in its raised position, is disposed substantially above
the center of mass of the body. Otherwise the body would start to rotate instantly
when lifted off of the floor. A stable feel may further be imparted to both the handle
and the dust cover by spacing apart their pivot points. The pivot points may preferably
be disposed near opposite sides of the body so as to maximize the distance between
them.
[0005] In combination, these functional requirements lead the dust cover and the lifting
handle to compete for structural junctures halfway the body, on opposite sides thereof.
This problem is worsened when a design that is both sleek and functional is strived
for. Sleekness may dictate a streamlined body profile, having as few interruption
lines in the outer face of the body as possible. Those interruption lines that are
practically necessary, such as for example interruption lines between the pivotable
dust cover on the one hand, and the lifting handle or a fixed top face part of the
body on the other, may preferably be straight and narrow. However, in order to enable
both the dust cover and the lifting handle to be pivotably arranged at their preferred
positions, bulky constructions and/or irregularly shaped interruption lines have thus
far been accepted as a consequence of simple structural solutions.
SUMMARY
[0006] It is an object of the present invention to provide for a vacuum cleaner, having
a lifting handle and dust cover, whose construction mitigates or overcomes the competition
between the lifting handle and the dust cover for structural junctures halfway the
body, thereby still allowing some or all of the above-mentioned functional and aesthetic
desires to be satisfied.
[0007] To this end, the invention provides a vacuum cleaner comprising a body, said body
including a dust collection chamber, and a dust cover, said dust cover being pivotably
connected to the body such that it is movable between a first dust cover position
and a second dust cover position. In the first dust cover position, the dust cover
at least partly closes off the dust collection chamber. In the second dust cover position,
the dust cover enables manual access to the dust collection chamber. The vacuum cleaner
further comprises a lifting handle for lifting the vacuum cleaner. The lifting handle
is pivotably connected to the dust cover such that it is movable between a first lifting
handle position and a second lifting handle position. When the dust cover is in the
first dust cover position, the lifting handle is substantially in line with the dust
cover when it is in the first lifting handle position, while the lifting handle protrudes
outward relative to the body when it is in the second lifting handle position.
[0008] A construction wherein the lifting handle is pivotably connected to the dust cover,
and wherein the dust cover is itself pivotably connected to the body of the vacuum
cleaner, allows the lifting handle and the dust cover to co-exist in something like
a cross-relationship. The battle for a place to connect to the body is thereby resolved.
The pivot points of the lifting handle may reside under the dust cover, while the
pivot points of the dust cover may reside under the lifting handle. Accordingly, the
pivot points of the dust cover may for example even be disposed beyond halfway the
body (e.g. in favour of enlargement or better accessibility of the dust collection
chamber), without potentially pushing aside pivot points of the lifting handle from
a position halfway the body. All pivot points may be arranged close to the sides of
the body to ensure the stability of the lifting handle and the dust cover. Furthermore,
visually, a single straight and narrow interruption line may extend between the dust
cover on the one hand, and a top surface part of the body and the lifting handle on
the other.
[0009] These and other features and advantages of the invention will be more fully understood
from the following detailed description of certain embodiments of the invention, taken
together with the accompanying drawings, which are meant to illustrate and not to
limit the invention.
BRIEF DESCRIPTION OF THE FIGURES
[0010]
Figs. 1-2 are schematic perspective views of different, known vacuum cleaners that
feature a pivotable dust cover and lifting handle;
Fig. 3 is a side view of an exemplary vacuum cleaner according to the present invention;
Fig. 4 is a top view of the exemplary vacuum cleaner shown in Fig. 3;
Fig. 5 is a side view of the exemplary vacuum cleaner shown in Fig. 3, having the
lifting handle turned towards its second position;
Fig. 6 is a side view of the exemplary vacuum cleaner shown in Fig. 3, having the
dust cover turned towards its second position;
Figs. 7-9 are perspective views of the structure that pivotably connects the lifting
handle and the dust cover in the exemplary vacuum cleaner shown in Fig. 3; and
Fig. 10 is a schematic illustration of part of the geometry of the connection between
the lifting handle and the dust cover that enables the lifting handle to pivot freely
around the dustcover, even when both are provided with decorative bands with straight,
opposing edges.
DETAILED DESCRIPTION
[0011] In the drawings, identical reference numbers identify same or similar elements. Furthermore,
to improve drawing legibility, some elements in a figure may not be labeled in case
the respective elements are clearly recognizable and have already been identified
in one or more preceding figures.
[0012] Reference is first made to Figs. 1 and 2, which are schematic perspective views of
different, known vacuum cleaners 1. The Figs. 1 and 2 illustrate known solutions to
the problem of providing a vacuum cleaner with a lifting handle and a dust cover that
are both pivotable around an axis at about halfway the body. It is understood that
a vacuum cleaner 1 typically comprises a hose 2 and/or a tube structure 4 having a
nozzle 6 provided at an end thereof. For reasons of clarity, however, these elements
are depicted only in Fig. 2.
[0013] The vacuum cleaners 1, depicted in an upright position, comprise a body 8 that is
set on wheels. In addition to the visible rear wheels 10 a third, more forwardly disposed
wheel may provided at a bottom side of the body 8, such that, when the vacuum cleaner
1 is in a working position, it is supported by the three wheels that enable it to
stably move across a level floor. The bodies 8 of the vacuum cleaners 1 comprise a
motor, disposed in the back half thereof (in the upright orientation: the lower half),
and a dust collection chamber, disposed in the front half of the body (in the upright
orientation: the top half thereof). The dust collection chamber is covered by a dust
cover 12 that is provided with a hose connection opening 14 to which a hose 2 may
be swivelably connected. Clearly visible in both Fig. 1 and 2 is the interruption
line 22 in the top face of the body 8, which line demarcates the pivotable dust cover
12 from a non-pivotable, back top face part 28. To enable the dust cover 12 to pivot
around the interruption line 22, the hinges of the dust cover are located below (in
the upright orientation: behind) the top face part 28, less than optimally spaced
apart.
[0014] The body 8 of the vacuum cleaner 1 depicted in Fig. 1 features a circumferential,
oval structure 16. Said structure 16, which may also fulfil a bumper function, incorporates
two lifting handles 18, 20. A first lifting handle 18 is rigidly connected to the
body 8, and its primary use it to enable a user to transport the body in its upright
position, e.g. to and from a storage cabinet. A second lifting handle 20 is pivotably
connected to the body 8. As can be seen clearly, the interruption lines 24, which
signal the split construction of the oval structure to enable the pivotability of
the handle 20, are not in alignment with the interruption line 22. This is not beneficial
to the appearance of the vacuum cleaner. The same may in fact be said of the entire
oval structure 16, which seems to manifest itself as a separate identity that is formed
on the body 8, and that protrudes from the basic outer dimensions thereof. The oval
structure does, however, allow the pivot points of the handle 20 to be placed as desired,
irrespective of the size of the dust cover, as the two do not interfere.
[0015] The lifting handle 20 of the vacuum cleaner 1 depicted in Fig. 2 may, in contrast
to that in Fig. 1, be folded neatly into close abutment with the back side of the
body 8, as shown. However, to resolve the issue of connecting both of the oppositely
pivoting dust cover 12 and handle 20 to a point about halfway the body, the vacuum
cleaner 1 has been provided with rather bulky hinges 26. The hinges 26 project outward
from the body, and thereby seriously impair the sleekness of its design.
[0016] Referring now to Figs. 3 and 4, which respectively show a side view and a top view
of an exemplary vacuum cleaner 1 according to the present invention. In Figs. 3 and
4, the lifting handle 300 is in the first lifting handle position, while the dust
cover 200 is in the first dust cover position. Both the lifting handle 300 and the
dust cover 200 thus abut the body 8. What may catch the eye, in particular in comparison
to the known vacuum cleaners 1 shown in Figs. 1 and 2, is the streamlined appearance
of the device. Particularly striking is the single, substantially straight and narrow
interruption line 100 that runs across the width of the body 8, from flank to flank.
Near the flanks, the interruption line 100 bends somewhat, but this is not out of
necessity. Instead, the bend was deliberately applied such that, in a side view, the
interruption line 100 extends perpendicularly to the horizontally sloping line that
separates the body 8 from the handle 300 and the dust cover 200. The interruption
line 100 demarcates the dust cover 200 on the one hand from the lifting handle 300
and another top face part 28 of the body 8 on the other. At the flanks of the body
8, decorative bands 202, 302 are visible. The first decorative band 202 is part of
the dust cover 200, the second decorative band 304 is part of the lifting handle 300.
It is understood that the decorative bands 202, 302 help to hide the actual construction
of the connection between the lifting handle 200 and the dust cover 200 from view.
As can be seen well in Fig. 3, the decorative bands 202, 302 join each other, in line,
at the interruption line 100, which line spaces them apart by a narrow margin. The
opposing edges of the decorative bands 202, 302 immediately adjacent to the interruption
line 100 run substantially parallel to each other, thereby giving the interruption
line part of its straight shape.
[0017] Surprisingly, and despite the fact that the Figs. 3 and 4 seem to indicate otherwise,
the dust cover 200 and the handle 300 are pivotable in opposite directions. This is
shown in Figs. 5 and 6. Fig. 5 shows another side view of the exemplary vacuum cleaner
1 shown in Fig. 3, now with the handle 300 pivoted clockwise towards its lifting position.
As can be seen, the handle 300 can be pivoted without being hindered by the proximity
of the dust cover 200. Pivoting the dust cover 200 in an anti-clockwise direction
is also possible, as illustrated by Fig. 6. In this case lifting handle 300 backs
away a little, which is a result of the fact that the handle is pivotably connected
to the dust cover 200, at a point beyond that at which the dust cover itself is pivotably
connected to the body 8.
[0018] The construction that pivotably connects the lifting handle 300 and the dust cover
200 together will now be examined in more detail with reference to Figs. 7-10. Figs.
7 and 8 are exploded perspective views of the relevant parts of the lifting handle
300 and the dust cover 200, while Fig. 9 is a detailed perspective view of the hinge
construction in action. Fig. 10 schematically illustrates some of the geometry involved.
[0019] As can be seen, the dust cover 200 comprises two dust cover pivot arms 204. Each
of these arms 204 comprises an extremity 206 at which it may be pivotably connected
to the body 8. Preferably, the dust cover pivot arms 204 are connected to the body
8 such that a distance between the arms measures a dimension, e.g. a width, of the
body. The relatively large separation of the arms 204, and hence of their pivoting
connections, may impart a feel of stability to the dustcover 200 when it is in its
opened position. The lifting handle 300 comprises two lifting handle pivot arms 304.
Each of these lifting handle pivot arms 304 comprises an extremity 306 at which it
may be pivotably connected to the dust cover 200, more in particular to a dust cover
pivot arm 204. To this end, the dust cover pivot arms 204 may for example be fitted
with a cylindrical recess 208 in which a pivot pin (not shown) may be receivable.
The pivot pin may also extend through an eye 308 provided in the extremity 306 of
the associated lifting handle pivot arm 304. The recess 208 is preferably provided
in an inner side of the dust cover pivot arms 204, so as to facilitate hiding the
hinging connection from view. As well illustrated by Fig. 8, a lifting handle pivot
arm 304 may preferably be pivotably connected to a dust cover pivot arm 204 at a point
(i.e. recess 208) beyond that a which the latter is itself connectable to the body
8 (i.e. at extremity 206). In addition, the point 208 where the lifting handle pivot
arm 304 connects to the dust cover pivot arm 204 is preferably located at a longitudinal
point of the latter arm that is provided with the aforementioned decorative band 302.
This allows for a neatly narrow interruption line 100.
[0020] Fig. 10 schematically illustrates in more detail how the construction of Figs. 7
and 8 allows the decorative bands 202, 302 to be separated by a narrow, straight split
line 100 (cf. Fig. 3) without impairing their mutual pivotability. In addition to
said decorative bands 202, 302, which are shown in a side view (like in Fig. 3), Fig.
10 schematically shows the interruption line 100 and the recess 208 in the dust cover
pivot arm 202 (cf. Fig. 8). It is understood that the decorative band 302 pivots around
the center of the recess 208. To enable such rotation, the depicted distance 'b' must
be equal to or larger then the depicted distance 'a'. Here 'b' is the perpendicular
distance from the straight edge of decorative band 302 to the center of rotation,
while 'a' is the distance from said center to the corner of decorative band 202 around
which decorative band 302 will pass during its rotation. The reason that the condition
b ≥ a must be fulfilled is that 'b' is in fact the shortest distance between the center
of rotation and the decorative band 302. If this distance would be smaller than 'a',
decorative band 302 would inevitably run into the aforementioned corner of decorative
band 202. Fig. 10 makes it clear that, by making the distance 'a' smaller, the distance
'b' may be diminished as well. Practically, this means that moving the recess 208
upwards (towards the higher horizontal edge of the decorative band 202) may allow
for a narrower interruption line 100. This explains why the recess 208 is preferably
located at a relatively high position, close to the top edge of the decorative band
302, as can be seen in Fig. 8.
[0021] Put together, a connection between the lifting handle pivot arm 304 and a dust cover
pivot arm 204 may look like the one shown in perspective in Fig. 9. As was already
visible in Figs. 7 and 8, both the lifting handle pivot arm 304 and the dust cover
pivot arm 204 may comprise a number of spaced apart, substantially parallel plate
members 212, 312. The number of plate members 212, 312 may vary per embodiment. In
Fig. 9, a middle one of the three protruding plate members 312 provided on the lifting
handle pivot arm 304 is receivable in a recess between the two plate members 212 of
the dust cover pivot arm 204 to improve the stability of the connection. To the same
end, the plate members 212, 312 provided on both arms 204, 304 are arranged such that
they interlock (i.e. the plate members of the lifting handle pivot arm 304 interlock
with the plate members of the dust cover pivot arm 204). In an embodiment of the vacuum
cleaner, the middle one of the plate members 312 may be provided with a stop 314 that
is disposed such that it engages an edge of the recess between the two plate members
212 when the lifting handle 300 is in its second lifting handle position (as shown
in Fig. 9). This allows the lifting handle 300 to be fixed in its raised position.
As the plate members 212, 312 are typically flexible, a little force may suffice to
move the lifting handle 300 back into its first position.
[0022] Although illustrative embodiments of the present invention have been described with
reference to the accompanying drawings, it is to be understood that the invention
is not limited to these embodiments. Variations to the disclosed embodiments can be
understood and effected by those skilled in the art in practicing the claimed invention,
from a study of the drawings, the disclosure, and the appended claims. Reference throughout
this specification to "one embodiment" or "an embodiment" means that a particular
feature, structure or characteristic described in connection with the embodiment is
included in at least one embodiment of the present invention. Thus, the appearances
of the phrases "in one embodiment" or "in an embodiment" in various places throughout
this specification are not necessarily all referring to the same embodiment. Furthermore,
it is noted that the particular features, structures, or characteristics may be combined
in any suitable manner in one or more embodiments.
1. A vacuum cleaner (1), comprising:
- a body (8), said body including a dust collection chamber;
- a dust cover (200), said dust cover being pivotably connected to the body such that
it is movable between a first dust cover position, in which the dust cover at least
partly closes off the dust collection chamber, and a second dust cover position, in
which the dust cover enables manual access to the dust collection chamber;
- a lifting handle (300) for lifting the vacuum cleaner, said lifting handle being
pivotably connected to the dust cover such that it is movable between a first lifting
handle position and a second lifting handle position, whereby, when the dust cover
is in the first dust cover position, the lifting handle is substantially in line with
the dust cover when it is in the first lifting handle position and the lifting handle
protrudes outward relative to the body when it is in the second lifting handle position.
2. The vacuum cleaner according to claim 1, wherein:
- the dust cover (200) comprises two dust cover pivot arms (204), each dust cover
pivot arm comprising an extremity (206) at which it is pivotably connected to the
body (8); and
- the lifting handle (300) comprises two lifting handle pivot arms (304), each lifting
handle pivot arm comprising an extremity (306) at which it is pivotably connected
to the dust cover.
3. The vacuum cleaner according to claim 2, wherein a first and a second of the lifting
handle pivot arms (304) are pivotably connected to, respectively, a first and a second
of the dust cover arms (204), in each case at a point (208) of the respective dust
cover pivot arm beyond the extremity (206) at which the latter is itself pivotably
connected to the body (8).
4. The vacuum cleaner according to any of the claims 2-3, wherein each of the dust cover
pivot arms (204) has an inner side (210), such that the inner sides of the dust cover
pivot arms face each other, and wherein the lifting handle pivot arms (304) are pivotably
connected to the dust cover pivot arms at said inner sides.
5. The vacuum cleaner according to any of the claims 2-4, wherein each of the lifting
handle pivot arms (304) comprises a decorative band (302), said decorative bands at
least partly covering the extremities (206) of the dust cover pivot arms (204) when
the dust cover (200) is in the first dust cover position and the lifting handle (300)
is in the first lifting handle position.
6. The vacuum cleaner according to claim 5, wherein each of the dust cover pivot arms
(204) comprises a decorative band (202), which decorative band extends away from the
extremity (206) at which a respective dust cover pivot arm is connected to the body
(8), starting at a longitudinal position on the dust cover pivot arm between said
extremity (206) and a point (208) where an extremity (306) of a lifting handle pivot
arm (304) pivotally connects to said dust cover pivot arm.
7. The vacuum cleaner according to claim 6, wherein a first and a second of the decorative
bands (202) of the dust cover (200) are disposed such that they are substantially
in line with, respectively, a first and a second of the decorative bands (302) of
the lifting handle (300) when the dust cover is in the first dust cover position and
the lifting handle is in the first lifting handle position
8. The vacuum cleaner according to any of the claims 2-7, wherein one of a lifting handle
pivot arm (304) and a dust cover pivot arm (204) connected thereto comprises at least
one protruding member, and wherein the other of said lifting arm and said dust cover
pivot arm comprises at least one recess configured for receiving said protruding member,
whereby the protruding member and the recess are disposed such that the protruding
member is gradually moved from the recess when the lifting handle (300) is moved from
the first lifting handle position to the second lifting handle position.
9. The vacuum cleaner according to claim 8, wherein the at least one protruding member
is one of a number of spaced apart, substantially parallel plate members (312, 212)
comprised by the respective arm (204, 304), and wherein the at least one recess is
formed between one of more substantially parallel plate members (312, 212) comprised
by the other respective arm (204, 304), whereby the plate members provided on both
arms are disposed such that the plate members (312) of the lifting handle pivot arm
(304) interlock with the plate members (212) of the dust cover pivot arm (204).
10. The vacuum cleaner according to claim 8 or 9, wherein the at least one protruding
member is provided with a stop, which is disposed such that it engages an edge of
the recess when the lifting handle (300) is in its second lifting handle position.
11. The vacuum cleaner according to any of the preceding claims, wherein the two dust
cover pivot arms (204) are spaced apart by a distance that corresponds to a dimension
of the body (8).
12. The vacuum cleaner according to any of the preceding claims, said vacuum cleaner having
a working orientation wherein the dust cover (200) and the lifting handle (300) are
disposed on a top side of the body (8).
13. The vacuum cleaner according to claim 12, wherein, when the vacuum cleaner is in its
working position and the lifting handle (300) is in the second lifting handle position,
the lifting handle is disposed substantially vertically above a center of mass of
the vacuum cleaner.
14. The vacuum cleaner according to claim 12 or 13, wherein, in a top view of the vacuum
cleaner (1) in its working orientation, when the lifting handle (300) is in the first
lifting handle position and the dust cover (200) is in the first dust cover position,
a first interruption line extends between the dust cover and a top face part (28)
of the body (8), and second interruption lines extend between the dust cover and the
lifting handle, whereby said first and second interruption lines are formed such that
they appear as one, substantially straight, continuous line (100).