CN103565353A

CN103565353A - Floor tool for vacuum cleaning appliance

Info

Publication number: CN103565353A
Application number: CN201310337104.7A
Authority: CN
Inventors: T.M.麦克维伊
Original assignee: Dyson Ltd
Current assignee: Dyson Technology Ltd; Dyson Ltd
Priority date: 2012-08-03
Filing date: 2013-08-05
Publication date: 2014-02-12
Also published as: AU2013298317B2; GB201213842D0; WO2014020307A1; US20140033473A1; JP5913226B2; KR20150032595A; GB201312354D0; JP2014030728A; GB2504849A; AU2013298317A1; GB2504849B; EP2879562A1

Abstract

A floor tool for a vacuum cleaning appliance, the floor tool comprising a main body including a suction nozzle comprising a surface engaging skirt that depends downwardly to define an outer periphery of a suction chamber having a suction chamber outlet, the surface engaging skirt including a leading edge, a trailing edge, and side edges extending between the leading edge and the trailing edge, and wherein the trailing edge depends downwardly from the suction nozzle by a first distance and the leading edge depends downwardly from the suction nozzle by a second distance that is less than the first distance so as to define a predetermined gap with a floor surface, in use.

Description

Ground instrument for vacuum cleaning appliance

Technical field

The present invention relates to a kind of ground instrument for vacuum cleaning appliance, and be combined with the vacuum cleaning appliance of such ground instrument (no matter being as detachable block or as a body component).

Background technology

Vacuum cleaner is equipped with a series of instruments conventionally, for the treatment of different clean up tasks.For example, such instrument can be universal grounding instrument clean on the ground for hardstand and fabric face covering.Conventionally, ground instrument comprises the main body engaging with floor surface.This main body has the lower surface that comprises air-breathing opening, and foul and dust can enter ground instrument because the suction being produced by the attached vacuum cleaner of instrument is passed this air-breathing opening suction.Although ground instrument is relatively good at from floor surface and is removed loose dust and chip, they for example, are not good at so removing the foul of other form (stain, it may be left over by the liquid being sprinkled upon on hardstand covering) aspect.Certainly, there is the apparatus that can be used for clean such stain.An example is shown in US2002/0184726, and wherein long handle cleaning appliance comprises cleaning head, and cleaning foil is attached to this cleaning head removedly.So such apparatus can be used for scraping or wiping hardstand surface to remove obstinate stain by user.

It is also known that the combination of the function of vacuum cleaner ground instrument and cleaning foil, so that except the common function that picks up loose foul and chip, also provide the equipment of wiping foul and stain for ground instrument.As an example, JP9028638 has described a kind of device, and it combines mop and vacuum cleaner ground instrument by elongated ozzle is arranged as adjacent with mop retainer, and wherein mop is attached to mop retainer.Ground instrument is realized floor cleaning and vacuum cleaning function thus.In addition, EP1608253 discloses a kind of ground instrument for vacuum cleaner, and wherein rectangle support component carries disposable erasing part, and wherein elongated intake nozzle is positioned as adjacent with the long edge, front and back of support component.

Mop and the air-breathing ground instrument of even now combination have its advantage, and still the clean-up performance of such instrument on hardstand traded off, and their multifunctionality is restricted.The present invention invents in the situation that wanting to solve these shortcomings.

Summary of the invention

In first aspect, the invention provides and a kind ofly can or be connected to removedly the ground instrument of vacuum cleaning appliance with vacuum cleaning appliance one, this ground instrument comprises and is suitable for supporting cleaning foil; With at least one intake nozzle being communicated with conduit, this conduit is in use connected to vacuum cleaning appliance, wherein for controlling the neck of ground instrument, is coupled to supporting member, and wherein said at least one intake nozzle is configured to float with respect to neck.

The present invention provides the ground instrument in vacuum cleaning appliance situation thus, and it has dual-use function.First, ground instrument provides suction cleaning function, and the second, ground instrument has carrying cleaning foil with the ability of wiping floor surface when making vacuum cleaning floor surface.Intake nozzle is configured to float with respect to the connection neck of ground instrument, and this provides several benefits.First, the downward force that user applies via neck is directly transferred to supporting member, rather than to intake nozzle, this downward pressure has been improved the clean-up performance that is carried on the wiper blade on supporting member.The second, because very little downward force is applied to intake nozzle, so it can ride in floor surface lightly, and this is of value to the pickup capacity of intake nozzle.

Although can comprising, ground instrument of the present invention orientates the single intake nozzle contiguous with the front or rear edge of supporting member as, but alternate embodiment comprises the first and second intake nozzles, an ozzle is orientated as and the leading edge of supporting member and the corresponding vicinity in back edge.

In a preferred embodiment, intake nozzle is communicated with collector, and collector can be positioned at medium position with respect to supporting member, and each intake nozzle transports arm by fluid and is linked to collector.Fluid transports arm and therefore ozzle is configured to " overhung " configuration on supporting member.

Collector can pass a part for the neck of ground instrument and extend, and can size be arranged so that collector is allowed to respect to neck movement, thinks that intake nozzle provides the ability of " floating ".In order to allow user to handle ground instrument, neck can limit first, and it is attached to supporting member pivotly around first axle.First can be cylindrical form, and it limits at least in part the track configurations around its periphery, and this track configurations constructs and engage with the complementary slide block on supporting member, thereby track configurations can be along slider support/slip.Because the periphery edge of the part of cylindrical base only engages supporting member, so the middle part volume of cylindrical base part do not stopped substantially, thereby collector can pass it, thus collector is connected to supporting member.

For maneuverability is greatly provided, neck can comprise second portion, and it is connected to base portion part pivotly around the second axis, and this second axis is perpendicular to first axle.This allows ground instrument to rotate in being parallel to the plane of floor surface by rotation neck, effectively for ground instrument, offers the ability of " being turned to ".

In the embodiment shown, collector is communicated with flexible hose, and flexible hose extends to coupling part through the second portion of neck, and therefore for directing air to relevant vacuum cleaner from collector via neck.

In second aspect, the invention provides a kind of ground instrument for vacuum cleaning appliance, comprise body, be connected to body so that with respect to it neck around axis " A " pivotable, body comprises intake nozzle, wherein neck comprises base portion part, it limits the track construction of locating around its periphery at least in part, and body comprises slide block structure, it engages with the discrete portions of track construction, track construction can slide with respect to slide block structure, thus base portion is partly connected to body, but allows base portion part with respect to body pivotable.More particularly, track construction can comprise the edge of base portion part, and the structure of the slide block on body can comprise protuberance, this protuberance and this imbricate, and can slide with respect to it.Thus, the discrete point place of body on its edge keeps the base portion part of neck, and its middle part that means base portion part can keep unlimited.Therefore the unlimited central region of base portion part can receive the conduit of ground instrument.By selecting conduit with respect to the size of base portion part, conduit can be configured to respect to base portion partial floating.

The pivoting action of neck can be by the flanged limits extending internally around its finite part from edge, and the end points of flange is defined for the retainer of the pivoting action of restriction base portion.

Above-mentioned ground instrument provides dual-use function instrument, and its work is to aspirate chip from ground, and also utilization is wet or dry clean wiping part cleaning floor.Yet user may wish to make vacuum cleaning ground and not need wiping ground.Therefore, in the third aspect, the invention provides a kind of ground instrument for vacuum cleaning appliance, comprise the supporting member that is suitable for supporting cleaning foil; With at least one suction nozzle being communicated with conduit, wherein supporting member comprises removable pad, and it can be dismantled from supporting member; With the rolling configuration of dangling from supporting member.

The present invention has strengthened the multifunctionality of ground instrument, because this instrument can be used by the operator scheme with " air-breathing and wiping ", wherein intake nozzle combines removable pad in function, and can be by with " only air-breathing " pattern using, and wherein only intake nozzle is used to cleaning floor surface.Such configuration is passable, and in practice, by user, frequently as cleaner for cleaning hard floor, because can expect, floor surface need to make vacuum cleaning than using moist disposable dirt wiring-out implement wiping more frequent with needs.Therefore ground instrument is not restricted to and uses ground pad together with vacuum cleaning plant.

Supporting member can comprise loading plate, and removable pad can be separated from this loading plate, and the configuration of rolling may be provided on the downside of loading plate.

Although roll, configuration can be implemented as roller, ball, castor or even low friction slide rail, and a kind of selection is to roll to configure to comprise a plurality of wheels or roller, and described wheel or rod dangle downwards from supporting member, to limit the contact plane that is parallel to floor surface.

When removable pad is coupled to loading plate, wheel or roller can extend in the hole being limited in removable pad at least in part.

In above-mentioned ground instrument, the risk of existence is that the quite tortuous geometry of intake nozzle and fluid flowing passage may cause chip to be trapped within the flow path of instrument.There are the needs of alleviating this risk, and thus, in fourth aspect, the invention provides a kind of ground instrument for vacuum cleaning appliance, comprise the supporting member that is suitable for supporting cleaning foil, and at least one intake nozzle being communicated with conduit, wherein conduit comprises one or more plug members, described plug member can engage with the respective seat arranging in conduit, and stopper can remove from seat, so that the entrance that enters catheter interior to be provided.Therefore the present invention provides a kind of ground instrument, and its combination is aspirated and wiped clean ability, and has user's maintainability of improvement.

Plug member can be passed crimp head or be threadedly engaged with the respective seat that is fixed to them, thereby they can be installed securely.Alternatively, plug member can comprise tether, and it remains on plug member in the position that approaches seat for when plug member is removed, thereby reduces the possibility that plug member passes into silence.Alternatively, plug member can be by hinged with respect to conduit, thereby plug member can be by hinge through away from seat, but still be attached to conduit.

In a preferred embodiment, collector is configured in the medium position of supporting member, and the first and second intake nozzles are by the location, front and rear edge (along the direction of motion) against supporting member.In this embodiment, one or more plug members can be arranged on collector, and the centre entrance point that it is provided to conduit provides and removes the easiness of stopping up.In one embodiment, the first and second plug members are arranged on the opposed end place of the collector of basic tubulose.Therefore, entrance is arranged on each end of collector, and it also allows clean appliance directly to be promoted through collector.

An advantage of ground instrument of the present invention is that the ability that ground instrument picks up dust, fine hair and other chip from floor surface is enhanced.A part for this benefit realizes by arrange the first and second air-breathing chambers in each side of wiping supporting member, but this performance improvement is also realized by the structure of intake nozzle itself.Thus, aspect the 5th, the invention provides a kind of ground instrument for vacuum cleaning appliance, this ground instrument comprises main body, this main body comprises intake nozzle, this intake nozzle comprises the surface engagement skirt section of the neighboring of dangling to limit air-breathing chamber downwards, this air-breathing chamber has air-breathing chamber outlet, surface engagement skirt section comprises leading edge, back edge and the lateral edges extending between leading edge and back edge, and wherein back edge is from intake nozzle first distance of dangling downwards, and leading edge is from the intake nozzle second distance that dangles downwards, this second distance is less than this first distance, thereby in use limit predetermined gap with floor surface.

Whether therefore, in fact, intake nozzle configuration provides substantially the narrow gap across the whole width of ozzle, but must ，Gai gap, full duration gap more substantial chip can be sucked, enters intake nozzle, and so is sucked into relevant vacuum cleaner.In theory, skirt elements can be by being provided for ground-engaging surface and making with its any material that forms the ribbon-shaped members of sealing, thereby air stream can mainly enter intake nozzle by leading edge gap.For example, mane wall can provide suitable band.Yet preferably surface engagement skirt section is flexible, thereby there is the ability of the floor surface of fitting to, and be preferably the band of plastic material, such as rubber.

Although skirt section can form by several, each part forms the skirt section of basic continous, and it can also be formed by single material bands.Preferably, material bands is wrapped by the main body that is molded into intake nozzle, because this has been avoided one or more flexible strips to be attached to the complex technology that intake nozzle downside may need.

The accurate dimension in gap depends on the pumping power of the vacuum cleaning apparatus that ground instrument is used for to a certain extent.Yet, current imagination, 1mm provides the suitable high-speed air flow through gap to the gap between 4mm, allow large-scale chip to enter ground instrument by gap simultaneously.More preferably the gap width of about 3mm, that is to say, the distance that leading edge dangles downwards from intake nozzle is than the little 3mm of antemarginal distance, thus the gap of the 3mm of restriction and floor surface.

In one embodiment, longitudinally wall longitudinally extends along air-breathing chamber, air-breathing chamber is divided into the air-breathing chamber of front and rear.One or more openings can be arranged in longitudinal wall, or in its end, to allow fluid to flow, are passed in the opening between anterior air intake passage and rear portion air intake passage.

Skirt section can also comprise transverse wall, and it extends between back edge and leading edge, or extends between back edge and longitudinal wall, so that air-breathing chamber is divided into the first and second sub-chamber, each has relevant air-breathing chamber outlet sub-chamber.The transverse wall amount identical with the back edge in skirt section of can dangling downwards, or the amount identical with the leading edge in skirt section alternatively.

As mentioned above, the structure of intake nozzle has improved the ability that ground instrument picks up little chip especially especially, and importantly, picks up the dust in the gap (such as the gap of timber floor etc.) that is arranged in floor surface and the ability of chip.Yet a fourth aspect of the present invention has special practicality in the situation that of dual-use function ground instrument, its combination air suction function and hardstand wiping function.With which, main body can comprise the supporting member that is suitable for supporting cleaning foil, and wherein intake nozzle is orientated as with the first edge of supporting member contiguous.

The ground instrument of even now has single intake nozzle may be enough, but another intake nozzle is preferably provided, and it orientates as with second edge that is parallel to the first edge of supporting member contiguous.

When two intake nozzles are provided with opening in longitudinal wall, the first intake nozzle is configured to the flow area of the opening in longitudinal wall that flow area is different from the second intake nozzle.This effect produces " inspiratory force " biasing front intake nozzles or more to rear intake nozzle that arrive by vacuum cleaner more.

As already mentioned, the function of ground instrument combination attraction type instrument of the present invention and hardstand wiping device.Knownly by hook and ring fastening system, polishing piece is attached to substrate, and known wiper blade is wrapping to substrate, thereby the edge of wiper blade may be pushed in the gap structure being limited on wiper blade top.Yet such attachment method may not keep polishing piece securely, and wiper blade may be tended to be pulled during the seesawing of ground instrument and departs from this attached scheme.In order to improve, polishing piece can be attached to the device of attraction type ground instrument, the present invention provides a kind of ground instrument for vacuum cleaning appliance in thus aspect the 6th, comprise the supporting member that is suitable for supporting cleaning foil, at least one intake nozzle with contiguous supporting member, wherein this supporting member comprises loading plate and ground engagement pad, they releasably remain to together by clamp arrangements, thereby the edge of cleaning foil can be sandwiched between loading plate and ground pad, so that cleaning foil is firmly held on pad.

The user that is configured to like this provides the useful especially scheme that cleaning foil is attached to ground instrument, and this scheme is firmly fastened to cleaning foil, thereby it in use can not fluffed.In one embodiment, once cleaning foil is wrapping to ground pad, clamping device can operate and automatically lock ground pad when being pushed against loading plate at ground pad.Like this, it is upper that user only needs to shift loading plate onto pad, and two parts are locked into together, and this can complete from stand up position.This says it is particularly advantageous from customer-side.

Clamping device can comprise at least one button, and it can be operated with the ground pad that gets loose from loading plate by user.Button can be installed to around pivotal point the upper surface of ground pad, and limits latch surface, for coordinating with the snap surface being arranged on loading plate.The automotive latch of button arrangement can be by comprising that the snap surface of upper surface and inclined lower surface realizes, when ground pad contacts with plate, inclined lower surface is encountered the surface of button, this inclined surface forces button pivotable to cross fastener thus, to allow ground pad to engage completely with loading plate, it is in place that button recovers pivotable thus, so that ground pad is locked onto to loading plate.

Although an only button can be provided, it is to get loose by making a side of pad, and in a preferred embodiment, the first and second user-operable button are disposed in the place, every one end of the upper surface of ground pad, to engage with the corresponding fastener on loading plate.

The sufficient power that cleaning foil is firmly held between loading plate and ground pad can provide by cleaning foil being clipped between two parts.Yet in order to increase the maintenance of ground instrument on this sheet, loading plate/ground pad may further include promptly configuration, it is configured under the situation when cleaning foil is engaged with between ground pad and loading plate, promptly the edge of cleaning foil.Promptly configuration can limit by least one rib is set on the pad of ground, and this rib can engage with the corresponding conduit being arranged on loading plate.

Should be understood that the first, second, third, fourth, the 5th and the 6th aspect of the present invention preferably and/or can optional construction can with suitably combination each other.

Accompanying drawing explanation

Referring now to accompanying drawing, embodiments of the invention are only described by way of example, in the accompanying drawings:

Fig. 1 is according to the perspective view of vacuum cleaning appliance of the present invention and relevant ground instrument;

Fig. 2 is the perspective view from forward observation of the ground instrument from Fig. 1 of vacuum cleaner body separation;

Fig. 3 is the perspective view that the ground instrument in Fig. 2 is observed from rear;

Fig. 4 is and the similar view of Fig. 2, but the neck of ground instrument is partly removed to illustrate inner flow passage;

Fig. 5 a and 5b are the perspective views of the ground instrument in Fig. 2 and 3, but its intake nozzle assembly is removed so that the mode that neck is connected to the supporting member of ground instrument is shown;

Fig. 6 a and 6b are the views that is similar to Fig. 5 a and 5b, but neck is in obliquity;

Fig. 7 a is the side view of ground instrument, and its supporting member that shows ground instrument is at raised position, and Fig. 7 b is that Fig. 7 a is along the cutaway view of A-A line;

Fig. 8 a is the view that is similar to Fig. 7 a, but supporting member is dipping, and Fig. 8 b is that Fig. 8 a is along the cutaway view of A-A line;

Fig. 9 is the perspective view of the ground instrument of decomposed form;

Figure 10 is the perspective view from beneath of ground instrument, and wherein ground pad is removed so that the wheel layout of ground instrument is shown;

Figure 11 is the side view of the ground instrument in Figure 10;

Figure 12 is the view from beneath of the ground instrument in Figure 10 and 11;

Figure 13 is the view from beneath of the variant of the ground instrument in Figure 10; And

Figure 14 is the view of intake nozzle of another variant of ground instrument.

The specific embodiment

First with reference to figure 1, the vacuum cleaning appliance 2 of so-called " stick type vacuum cleaner " type comprises hand-held vacuum cleaner 4, and it can be carried by user's hand.

Elongated rod 6 is attached to hand-held vacuum cleaner 4, and this rod 6 extends downwardly into the ground instrument 8 that is arranged on excellent 6 ends, and ground instrument 8 is shelved in floor surface in conventionally using.This does not illustrate clearly in Fig. 1 to note floor surface, but its existence is undoubtedly.

Hand-held vacuum cleaner 4 comprises motor-driven fan unit (not shown), and it is disposed in electric machine casing 10 inside, and enters by being positioned at the air intake ozzle 12 suction air at the place, front portion of hand-held vacuum cleaner 4.Elongated rods 6 is connected to air intake ozzle 12, and ground instrument 8 and then be connected to rod 6 bottom.In use, dirty air is passed ground instrument 8 suction and enters and be directed into air intake ozzle 12 by rod 6.The dirty air that enters air intake ozzle 12 is through cyclone separation system 14, so and then relatively clean air via the exhaust outlet 16 that is positioned at place, rear portion, be expelled back into atmospheric environment, described cyclone separation system 14 by foul from air separation.Cyclone separation system 14 inside from air flow from foul be collected in case 18 for abandoning.Hand-held vacuum cleaner 4 is powered by the multiple-unit rechargeable battery being contained in battery case 20.

Ground instrument 8 can be by buckle 21 from rod 6 dismountings.Rod 6 and then can be by another buckle 23 from hand-held vacuum cleaner 4 dismounting.Hand-held vacuum cleaner 4 can thereby be used as separate unit is separated by pulling down rod 6, or alternatively, and hand-held vacuum cleaner 4, rod 6 and ground instrument 8 can be used as the hard floor surface cleaner device with air suction function and be used in combination.

Should be noted that the vacuum cleaner 2 in Fig. 1 shows a kind of possible configuration that wherein ground instrument 8 of the present invention can be used.The in the situation that of stick type vacuum cleaner, ground instrument 8 provides a kind of convenience of clean hardstand and portable mode of being used in particular for.Yet ground instrument 4 also can be used to the vacuum cleaner of other type, for example, be connected to rod and the hose of cartridge type or upright vacuum cleaner.Although preferably, ground instrument can be connected to relevant vacuum cleaner, and this is not necessary for the present invention, and ground instrument can be a body component, for example with the hand-held vacuum cleaner of Fig. 1 in excellent one.

Also forward Fig. 3 and Fig. 4 to, it illustrates in greater detail ground instrument 8, ground instrument 8 comprises main body 22 and can pivotable neck 24, can pivotable neck 24 for connecting ground instrument 8 to vacuum cleaner, and make the user can be across wanting cleaned floor surface to handle ground instrument.

Main body 22 comprises intake nozzle assembly 26 and the rectangular supporting member 28 of cardinal principle, can carry sheet cleaning element (not shown) on this supporting member 28.Intake nozzle assembly 26 comprises the first and second

elongated intake nozzles

30,32, and it is arranged as the corresponding long edge of contiguous supporting member 28.

In Fig. 2, ground instrument 8 is oriented as the left-hand side that makes its " front portion " Graph-Oriented.Therefore, it is respectively anterior intake nozzle 30 and rear portion intake nozzle 32 that the first and

second intake nozzles

30,32 can be considered to, and is after this so being called.

Intake nozzle assembly 26 comprises center air collector 34, and it is installed to the upper surface of supporting member 28.Each of the first and

second intake nozzles

30,32 is supported with respect to collector 34 by the first and second linking arms 36, this first and second linking arm 36 in every one end of collector 34, extend in opposite direction away from.Each linking arm 36 be hollow and therefore as ，Yan Gai fluid passage, fluid passage air, from

ozzle

30,32, be directed to collector 34.

Collector 34 is coupled to neck 24, thereby neck 24 can, around the middle body pivotable of the collector 34 between joint 38, engage collector 34 at these joint 38 place's linking arms 36.Yet, will be clear that, although neck can be around collector pivotable, collector can fluctuate with respect to neck.As indicated in Fig. 2, neck 24 is around axis A pivotable.

Neck 24 has hatch frame, its hold from collector 34 extend to neck 24 the flexible hose 40 of coupling part 42.Neck 24 is therefore for being directed to relevant vacuum cleaner from

intake nozzle

30,32 via coupling part 42 by air.As shown in Fig. 4 clearly, in Fig. 4, for the sake of clarity a part for neck 24 is removed, therefore flexible hose 40 extends to T junction pipe 44 from the coupling part 42 of neck, and this junction block 44 is connected to the both sides of collector 34 and for the air that flows through collector 34 is converged to flexible hose 40.T shape pipe 44 is connected to collector 34, thereby can angularly move around axis A.

In Fig. 5 a and 5b, intake nozzle assembly 26 has been removed, thereby clearly show that neck 24 is pivotably connected to the mode of supporting member 28.Substantially, neck 24 comprises the first and

second neck section

46,48, and it cooperates to limit universal joint each other.Like this, first (under) neck section 46 allows necks to swing up and down around axis A with respect to main body 22, and second (on) neck section 48 allow attaching parts 42 with respect to the first section 46 around the axis B pivotable perpendicular to axis A.This can easily be handled by user ground instrument 8, makes rotatablely moving of rod cause ground instrument in the wide range between neck and ground instrument, in being parallel to the plane on ground, rotates.

Consider this point, the first neck section 46 is roughly cylindrical form, and engages with supporting member 28, and it can be rotated around axis A.The first neck section 46 also comprises extension 50 straight line or box-like, and it vertically extends away from and limits opening 52, and through this opening, flexible hose 40 extends up through the inside of neck 24.The second neck section 48 comprises two parallel forks 54, and it is connected to box-like extension 50 by journal stirrup, thereby can swing around the axis B perpendicular to axis A.

The first neck section 46, more specifically its cylindrical part, engages with supporting member 28 by track construction 56.Each outer end of the first neck section 46 or " edge " comprise the orbit portion 58 around a part for its periphery, between the inwardly outstanding flange 60 that this orbit portion 58 extends at the remainder around periphery.Orbit portion 58 is maintained under the protuberance 62 of lug or tooth pattern, and this protuberance is limited by supporting member 28.The discrete portions of protuberance 62 engage rail portions 58, and along rail portion 58, move when neck 24 has a down dip on respect to supporting member 28.Protuberance 62 is therefore as " slide block structure ", and its engage rail part 58 also cooperates with it, to allow neck 24 pivotables.Term " discrete portions " is used to refer to the only sub-segments of engage rail portion 58 of orbit portion 58, and these layout permission neck section 46 maintenances are substantially unlimited, thereby collector can pass it.

Should note, Fig. 5 a and 5b show the neck in obliquity, by protuberance/slide block 62, the joint against an end of flange 60 is limited in this position, and Fig. 6 a and 6b show the neck in horizontally-inclined position, and this position is limited by another end of slide block 62 joint flanges 60.

Orbital arrangement 56 between neck 24 and supporting member 28 provides the direct connection between two parts, thereby neck can apply downward force to supporting member 28 during cleaning.Yet this connection is also surrounded and is kept collector 34, thereby allows collector with respect to supporting member 28(and also thus with respect to neck 24) float.In this respect, the diameter of the first neck section 46 is greater than the diameter of collector 34, thereby collector 34 can move with respect to it.This is particularly advantageous, because it allows downward force to be applied on supporting member 28 by neck, the wiping action that this promotes supporting member 28 makes the intake nozzle being associated with collector 34 to ride in floor surface lightly simultaneously, and can be by too at full tilt to pressing down.Because intake nozzle and floor surface are in light physical contact, so the ability that ground instrument removes foul from the gap of floor surface is enhanced.

In this embodiment, collector 34 is allowed to respect to the have an appointment vertical linearity motion of 5mm of supporting member 28, and the amount of this motion determines by the diameter difference between collector 34 and neck 24, yet, the value that should understand 5mm only provides as an example at this, and is not restrictive.Therefore, it will be appreciated by those skilled in the art that by the relative size of suitable selection collector and neck, in various degree unsteady is possible.

The effect of

unsteady intake nozzle

30,32 is shown in figure below: Fig. 7 a and 7b show the intake nozzle in dipping 30,32 with respect to supporting member 28, and Fig. 8 a and 8b show the intake nozzle in raised

position

30,32 with respect to supporting member 28.Collector 34 is with respect to the motion of supporting member 28 by post 64 guiding that are formed on collector 34 downsides, and this post 64 engages slidably with the bullport 34 that is arranged on the complementary shape on the upper surface of supporting member 28.Therefore intake nozzle and collector can vertically, that is to say along the direction perpendicular to floor surface and move up and down.In use, therefore, intake nozzle is always shelved in floor surface lightly, and irrelevant with the thickness of cleaning foil on the instrument of being used to.So supporting member 28 can hold the cleaning foil of different-thickness, and can not change the terrain clearance of intake nozzle.Thereby the pickup capacity of ground instrument 8 is held, and have nothing to do with the type that is fixed to the wiping element of supporting member.

Forward Fig. 9 to, " overhung " structure of intake nozzle assembly in this embodiment has configured has direction change airflow path relatively sharply, and it will be appreciated by those skilled in the art that the possibility between the parts that exist chip to be trapped in intake nozzle assembly.This problem can occur especially on long chip, such as hair and fine hair, and it may be stuck in around the angled path of instrument.For the solution to this is provided, collector 34 is provided with inlet device, and it is included in the first and second lids 68 of the relative end of collector 34.Lid 68 is circular, and can, by complementary channels 72 combinations in the open end 69 of lug 70 and collector 34, so that limit, reverse engage.Such torsion engage is preferred at present, because the positive action that it depends on user removes lid.Alternative can be simply to press-fit cooperation, may comprise that RUBBER O shape encircles to guarantee tight fit, but risk is to cover 68 may unexpected from collector 34, drop.As another, substitute, cover 68 and can be connected to by suitable holding device collector 34, thereby they can not removed completely by user.A kind of mode that realizes this is that mounting cover 68 makes them with respect to collector 34 pivotables, and thus, user can leave collector so that enter its inner passage by lid pivotable simply.Another substitutes can be that rope with certain form keeps lid, to allow in collector 34 and the separation of covering limited extent between 68.

Certainly, user may in the situation that only there is single lid to be arranged in one end of collector 34, remove chip from collector 34.Yet intake nozzle assembly 26 can all be had lid and more easily be safeguarded by the place, two ends at collector, because the entrance in every one end of collector is set up, and because its position is that the entrance in linking arm 36 is also provided.In addition, because collector 34 is tubulose and generally linear, therefore remove the visual inspection that two lids 68 allow along collector 34 length, and cleaning appliance, for example brush can be promoted completely through it, and this contributes to be adhered to removing of chip on collector inner surface.

As mentioned above, usually, ground instrument 8 has dual-use function: first, supporting member 28 is suitable for carrying moist material piece, the for example common obtainable disposable erasing part based on polyethylene (poly-based), thus ground instrument 8 can be used to wipe obstinate stain and foul from floor surface; And the second,

intake nozzle

30,32 removes loose dust and chip from floor surface, to arrive relevant vacuum cleaner by what aspirate by ground instrument with foul air flow delivery.In order to carry wiping element, supporting member 28 comprises ground pad 74 and pad loading plate 76, and it removably keeps together, thereby when two components bonding, wiper blade can be fixed between them, as by explanation now.

Fig. 9 shows ground pad 74 and the pad loading plate 76 being separated from each other.Ground pad 74 is roughly rectangular shape, and has the rectangle recess 78 that is limited to its upside, and loading plate 76 can be received in this rectangle recess 78.In use, cleaning foil can, around ground pad 74 parcels, make the end of cleaning foil extend upward and extend to the top at the long edge 80 of ground pad 74, so that be shelved in recess 78.Then ground pad 74 engages with loading plate 76, and is fixed to it, and this clamps cleaning foil to put in place.

Ground pad 74 is fixed to loading plate 76 by clamp arrangements 82.Clamp arrangements 82 comprises the first and second

door bolt parts

84,86, and it is positioned at the respective end place of ground pad 74.Corresponding the first and

second fasteners

88,90 that

door bolt part

84,86 can limit with the recess in each minor face edge by loading plate engage.

Each

door bolt part

84,86 comprises user-operable button, and this button has avette upper surface 92 substantially, and it limits shallow circular depressions 94, and this recess 94 is as the contact point of user's

finger.Button

84,86 is preferably engineering plastics, such as Merlon/polybutylene terephthalate (PBT) blend (polycarbonate/polybutylene terephthalate blend (PC+PBT)), this blend has high-strength characteristic and chemical inertness, and can there is color, to contrast with parts formation around, thereby make it eye-catching for user's vision.The high strength of PCT+PBT and chemical inertness are preferred for button, because button repeatedly actuates experience, and in use will suffer the common cleaning chemistry thing existing in family's cleaning foil, but be not necessary.

Button

84,86 is clearly shown that in Fig. 7 b, wherein in the drawings the button 86 of left-hand side in the state of being pressed, and in the drawings the button 84 of right-hand side in idle state.These buttons are identical in the present embodiment, thereby will only mention single button for the sake of brevity.Each

button

84,86 can be around pivotal point 96 pivotables that are limited on ground pad 74, and limit the latch surface 98 of extending towards Dian74 center, ground.The bias voltage device 100 of form of springs is provided, so that button is biased into rest position.Latch surface 98 can engage with the snap surface 102 that cooperates being arranged in the upright bead 104 being limited by ground pad 74, when two parts are firmly forced together, the latch surface 98 of button and 102 cooperations of the snap surface on ground pad 74 are to lock onto ground pad 74 by loading plate 76.

An advantage of clamp arrangements 82 is that

button

84,86 automatically locks with

fastener

88,90, and this makes easily assembling parts of user.For this reason,

fastener

88,90 comprises lower surface 106, and it is inclined upwardly, and limits thus cam face.When ground pad 74 contacts with loading plate 76, the upper surface 92 of cam face 106 contact buttons of fastener.This contact makes

button

84,86 angularly move around its pivotal point 96.The further motion towards loading plate 76 of ground pad 74 makes button eject stopping of snap surface 106, and then makes latch surface 98 lock snap surface 102, thus ground pad 74 is fixed to loading plate 76.

Loading plate 76 and ground pad 74 are fixed on wiping element between them together, and preferably, although be not necessary, bonded device is provided between pad and loading plate, to strengthen the clamping effect to wiping element.In this embodiment, bonded device comprises two elongate rib 108, is set to the corresponding long edge of the recess 78 near floor level pad 74, and they are projected in the corresponding conduit 110 being arranged on loading plate 76 downsides.Wiping element is effectively clamped and is put in place thus, and this has reduced the in use lower loosening possibility of wiping element of the effect that moves back and forth of ground instrument.

Except the function in conjunction with hardstand wiped clean device and hardstand vacuum tool, ground instrument 8 of the present invention has the equipment using under pure vacuum pattern that uses.If user wishes to sweep floor surface with dust catcher, still do not think and need wiping ground, this is useful.For this reason, loading plate 76 comprises the configuration 112 of rolling, and when not there is not ground pad 74, this rolling configuration 112 is supported on supporting member 28 in floor surface.

In this embodiment, as being shown clearly in Figure 10, the configuration 112 of rolling comprises two pairs of wheels 114, but these also may be implemented as roller or slide rail even.Each wheel 114 is maintained in corresponding wheel cover 116, and has the rolling axis of long axis (axis A) extension that is parallel to ground instrument 8, thereby wheel 114 is in use orientated along ground instrument direct of travel.As shown, wheel 114 arranges in pairs, and in every a pair of plane being aligned in perpendicular to the axis A of ground instrument, and thus, they are provided for the stable rolling contact point 76 of loading plate 76, and bear the power that is applied to ground instrument 8 by neck 24.

This illustrates particularly well in Figure 11, and wherein loading plate 76 is dipping, and power F applies by neck 24, and it is upper that wheel 114 is bearing in floor surface S by loading plate 76, and

intake nozzle

30,32 is with respect to loading plate 76 free floatings simultaneously.To understand, the key of this scheme is that wheel 114 is as the supporting-point of loading plate, thereby in this case, one group of suitable slide rail also will be carried out identical function with track, and is therefore considered to be comprised by term " configuration of rolling ".

Such instrument is passable, and in practice, by user, frequently as cleaner for cleaning hard floor, because can imagine, floor surface need to be used vacuum cleaner to sweep than it need to use wet disposable dirt wiring-out implement wiping more frequent.Therefore ground instrument is not restricted to using the equipment that vacuum cleaner is swept and is combined with ground pad, and this has strengthened the flexibility of ground instrument.

In the situation that ground pad 74 is attached to loading plate 76, wheel cover is received in the respective aperture 118 being arranged in ground pad 74, as shown in figure 12.

Another favorable characteristics of ground instrument 8 of the present invention is the structure of

intake nozzle

30,32, and it provides the good chip hit detect function on hardstand for ground instrument 8, as now by explanation.

With particular reference to Figure 10 and 12, each comprises the ground engagement skirt section 120 of general rectangular front and

rear intake nozzle

30,32, and it is from the hard top part Huo“ spine of intake nozzle " 122 dangle downwards.Another member or " partition wall " 124 laterally extend in the center between the long edge in skirt section 120, between two ends of intake nozzle, thus intake nozzle are divided into also the first air-breathing chamber 126 and the second air-breathing chamber 128 of registration.

Peripheral skirt/the wall 120 of air-breathing chamber 126,128 and partition wall 124, in this embodiment, be the one body being made of plastics, but it is contemplated that, skirt section 120 can be made by a plurality of independently bands.In this preferred embodiment, skirt section 120 is thermoplastic elastomer (TPE), and is wrapped by the spine 122 that is molded into intake nozzle, it should be understood that, this is not necessary, and skirt section also can be inserted in the groove being limited in intake nozzle.As another, substitute, skirt section 120 can also be formed by mane, but at present general flexiplast or rubber strip be due to its durability, and because they and be not inclined to and retain chip (may retain chip in mane situation), be preferably.

Each skirt section 120 can be believed to comprise back edge 130, and it orientates the corresponding long edge 80 of direct near floor level pad 74 as, and comprises leading edge 132, and it is away from ground pad 74.In addition, lateral edges 134 extends between front and rear edge 132,130, forms thus complete rectangular skirt section 120.

In order to promote good chip pickup capacity, the leading edge 132 in substantially whole skirt section 120 is shorter than back edge 130, thereby it is in use spaced apart from floor surface " S ".This is clearly shown that in Figure 11, and it shows and is spaced apart size " L ".In the present embodiment, interval or gap " L " is 3mm, but greater or lesser gap still provides benefit.Crucial consideration is that interval or gap " L " are selected with the given suction for being applied to ground instrument 8, maximizes the flowing velocity through

intake nozzle

30,32, still allows the chip of effective dimensions scope to enter air-breathing chamber 126,128 simultaneously.

The leading edge 132 of configuration intake nozzle is avoided cleaning course anterior " formula of the sweeping away snow accumulation " chip of intake nozzle (for the known ground instrument with holes or " profile of tooth " leading edge of often finding on existing hardstand instrument, this may occur) it by this way from floor surface S is spaced apart.In addition, by configure by this way front and rear intake nozzle both, in the stroke of the front and back of ground instrument, all realize identical advantage, but this is not necessarily.

On the contrary, the leading edge of

intake nozzle

30,32 limits straight linear edge, and its surface of mode ground-engaging with lip shape seal or " squeegee ", to prevent that accumulation of debris is on cleaning foil.Advantageously, this is avoided the life-span that floor surface is left vestige and extends cleaning foil.

Each of adjacent air-breathing chamber 126,128 is also provided with additional ground engagement member 136, is also the form of rubber strip, and it defines in the interior interior wall extending longitudinally of corresponding air-breathing chamber 126,128.Interior wall 136 or " longitudinal band " are divided into the first and second suction channels (being respectively front and rear suction channel) 138 by the inside of the first and second air-breathing chambers 126,128,140, it connects by hole or otch 142,144 fluids that are formed in band 136, limits thus " interface channel ".As can clearly be seen that from Figure 12, each

intake nozzle

30,32 comprises two air-breathing outlets 146, and it leads in linking arm 36, forms an outlet 146 in the rear portion of the air intake passage 140 of each air-breathing chamber 126,128.

In use, in the situation that ground instrument is positioned in floor surface, by relevant vacuum cleaner, be applied to the suction of ground instrument 8 in each two different pressure span of the interior generation of air-breathing chamber 216,128 of each ozzle 30,32.Due to the relative tightening seal around forming at rear portion air intake passage 140 with lateral edges 136 by back edge 130, relatively high vacuum is based upon in rear portion air intake passage 140.This promotes Air Flow relatively at a high speed, and it is of value to the chip that is arranged in the gap of floor surface is entrainmented to the air stream through rear air intake passage 140.In addition, because back edge 130 is straight and consistent, this has reduced the possibility that chip passes below back edge, the impact that its protection wiping element and ground pad are not picked up by chip.

Relatively low vacuum has been set up in providing of interface channel 142,144 in anterior air intake passage 138, so that the dust being arranged in floor surface can be entrainmented the fluid stream by air intake passage 138 before the suction of leading edge gap L with relative large chip.Then this fluid stream that carries dust be transported to rear portion air intake passage 140 from anterior air intake passage 138 by interface channel 142,144, is then transported in the linking arm 36 of intake nozzle assembly.Therefrom, air stream continues to flow to collector, and arrives flexible hose.

It should be noted that, the size that is limited to the hole 142,144 in the longitudinal band 136 in front and

rear intake nozzle

30,32 is also unequal.More specifically, the hole 142 in anterior intake nozzle 30 is semicircle form, and has larger flow area than the hole of the rectangular in form in rear portion intake nozzle 32 144.In this specific embodiment, the hole 142 in anterior intake nozzle 30 is the semicircle of radius 5mm, on the lower limb that is centered close to band 136 of radius, therefore causes being about 40mm ²flow area, and hole 144 in rear portion intake nozzle 32 is of a size of 9mm * 3mm, causes about 27mm ²flow area.It should be noted that these values are only exemplary.

The resistance of the current downflow area change being limited by the hole 144 in rear portion intake nozzle 32 to the Air Flow of rear portion intake nozzle 32, Comparatively speaking it have increases by the mobile effect of front intake nozzle 30.Therefore, air-breathing " power " that is applied to ground instrument by towards anterior intake nozzle 30 biasings, increases the pickup capacity in anterior ozzle 30 thus, and this is useful, because it is in anterior intake nozzle above when user promotes instrument along floor surface.

By intake nozzle being divided into two separate chamber 126,128, each chamber has corresponding front and rear air intake passage 138,140, can guarantee to be subjected to the high velocity fluid flow through air-breathing chamber across the whole width of ground instrument, this greatly promotes entrainmenting of chip and picks up.In addition, recessed leading edge 132 has reduced the formula of sweeping away snow of chip to be piled up, and has further improved thus the pickup capacity of ground instrument.

Other advantages can be by the embodiment in Figure 12 partition wall 148 a part remove realize.Figure 13 shows this point, can see that the front section of the partition wall in Figure 12 is removed, and only leaves the back section 150 of extending between longitudinal band 163 and the back edge in skirt section 120.Therefore, single anterior air intake passage 162 extends across the whole width of intake nozzle substantially.The front section of partition wall remove any " dead space " eliminated in anterior air intake passage, at this dead space place chip, may be detained or adhere.

Alternatively, the front section of the partition wall in Figure 10 124 does not need to be removed completely (as the embodiment of Figure 13).In one embodiment, the front section of partition wall 124 can be configured so that its back section than partition wall is more shallow.Between this lower limb in the front section of partition wall and floor surface, leave little gap, it means that air stream can discharge by this gap between Liang Ge front chamber 126,128.This improves pickup capacity by preventing any dead point in forward chamber 126,128, but the support structure to longitudinal wall 136 is still provided.

Some alternative intake nozzle structures have above been described.Another example is shown in Figure 14, and wherein for the sake of clarity, the single intake nozzle 30 of ground instrument is illustrated isolatedly.Note, in Figure 14, the parts common with previous embodiment are marked by identical Reference numeral.

Ground instrument described in above-described embodiment utilizes rubber strip to limit the ground engaging portions of intake nozzle.The ground instrument that is configured in is like this had the possibility that produces noise across floor surface push-and-pull time by user.Embodiment in Figure 14 has several features, and its intention reduces the in use issuable noise of instrument.

As in the previous embodiment, intake nozzle 30 shown in Figure 14 comprises the periphery heavy curtain of the rubber processing being limited by back edge 130, leading edge 132 and lateral edges 134, wherein leading edge 132 is with respect to back edge 130 " rise ", to limit elongated admission passage, for air stream, from leading edge 132 belows, flow into intake nozzle.

Yet, with reference to back edge 130, will see that it is provided with and inhomogeneous profile even or that straight profile is contrary.More specifically, the sidepiece part 170 of back edge 130 limits fluctuating profile, and sidepiece part 170 is positioned at the sidepiece of the middle body 172 with straight profile.The object of inhomogeneous profile is the friction attribute changing across back edge 130 length, to prevent the skirl possibility of sound of back edge 130 when it moves across smooth surface.Yet due to the flexibility of back edge 132, fluctuating profile can not adversely affect back edge sealing against the ability of floor surface.Although show fluctuating profile, it will be appreciated that for changing any inhomogeneous profile of the friction attribute of back edge 130 be also acceptable.For example, can be set to shallow city wall shape, or zig-zag.Yet current mild fluctuating profile is preferred, because can expect that it can more effectively keep its sealing property.In addition, back edge 130 is shown as separated with lateral edges 134 herein, and this contributes to the flexibility of back edge 130.

Lateral edges 134 is also provided with the measure that prevents noise.Here, the section 134a of the rubber processing of lateral edges 134 is increased some mane 174, and its section 134a than rubber processing extends farther, thereby flushes with back edge 132.Various technology can be used to fixedly mane part 174 and arrive intake nozzle.For example, mane can be molded directly in the polymeric material of intake nozzle, or mane can be secured together with short-term sexual norm by ridge member (not shown), as shown in figure 14, and by gluing, molded, shackle or other suitable tightening technology fix in position.

Compare with the band of rubber processing, mane part 174 has differentiated friction attribute, and has therefore further reduced the noise generation of intake nozzle 30.Yet because mane part 174 extends downwardly into the level identical with back edge 130, so they are also for effectively sealing the lateral edges 134 of intake nozzle, thus air can not discharge across this part, otherwise this pressure that can reduce ozzle keeps.

In the mode identical with previous embodiment, the inside of intake nozzle 30 is provided with single interior wall 136, and it longitudinally extends between its lateral edges 134 along intake nozzle 30, and therefore forms ground engagement member or the band of ozzle 30.Be different from previous embodiment, intake nozzle 130 does not arrange any partition wall, and therefore interior wall 136 is divided into anterior air intake passage 138 and rear portion air intake passage 140 by the inside of intake nozzle.By being arranged on the flow orifice 144 in wall 136, air is allowed to flow between anterior air intake passage 138 and rear portion air intake passage, and at anterior air intake passage 138 with between exporting 146, flows thus.

Interior wall 136 is also provided with the inhomogeneous profile of relief edges form.This inhomogeneous profile extends along its whole width substantially, and this provides identical reducing noise effect, keeps interior wall sealing against the ability of floor surface simultaneously.Yet, although relief edges is shown as substantially along the whole length of interior wall 136, it should be understood that, this is not necessary, and heterogeneity can provide by the abundant length along wall 136, so that obtain the reducing noise of expectation.

May change and can not deviate from the scope of the present invention being defined by the claims above-mentioned specific embodiment.For example, supporting member has been described as rectangle in the above, but it will be appreciated by those skilled in the art that other shape is also fine; For the intake nozzle of suitable modification, supporting member can also be triangle, rhombus or even avette.

In addition, although supporting member has been described to be specially adapted to use together with poly nonwoven cleaning foil with non-, it should be understood that, this is not that the present invention is necessary, and it can with the Wiping member of other types, such as clean fabric cloth is used together.Still alternatively, supporting member can carry porous cleaning element, is for example fixed on the foam-rubber cushion (for example, by hook ring type fastening system) of its downside or is integrally formed therewith.

Although ground instrument can be in principle formed by the material of wide region, plastics are because it is with low cost and easily manufacture and by preferably, because parts can form the shape (for example, by injection moulding) of almost any expectation.In ground instrument situation of the present invention, the selection of plastics affects validity and the long-term durability of ground instrument, because it is designed to use together with polishing piece, polishing piece contains number of chemical thing, and it can have adverse effect to some plastics.

Preferably, the first and second necks parts are made by injection-molded PC-PBT, because this material is very solid and the impact that can resist chemicals.Neck connector is preferably talcum filled polypropylene (PP), because it provides the intensity increasing for these parts, be applied to its power, and it is more cheap than PC-PBT so that stand via rod.

Intake nozzle assembly is mainly formed by polypropylene, and except skirt section, it is formed by thermoplastic elastomer (TPE) (TPE), and skirt section is preferably wrapped by the corresponding spine that is molded into intake nozzle.

Forward supporting member to, current imagination be, this bearing part is injection molding talcum filled polypropylene, for increasing intensity, and ground pad is for for the polypropylene (using intensity is provided) of upper surface with add the combination of blowing agent (thinking that it provides elasticity to a certain degree) as the thermoplastic elastomer (TPE) of the body of ground instrument, this combination has improved and the contacting of floor surface.

Claims

1. the ground instrument for vacuum cleaning appliance, this ground instrument comprises main body, this main body comprises intake nozzle, this intake nozzle comprises the surface engagement skirt section of the neighboring of dangling to limit air-breathing chamber downwards, this air-breathing chamber has air-breathing chamber outlet, this surface engagement skirt section comprises leading edge, back edge and the lateral edges extending between leading edge and back edge, and wherein back edge is from intake nozzle first distance of dangling downwards, and leading edge is from the intake nozzle second distance that dangles downwards, second distance is less than the first distance, thereby in use limit predetermined gap with floor surface.

2. ground instrument as claimed in claim 1, wherein said surface engagement skirt elements is flexible.

3. ground instrument as claimed in claim 1 or 2, at least one restriction at least one flexible strip of material, many manes and many filaments of wherein said surface engagement skirt elements.

4. ground instrument as claimed in claim 3, wherein said surface engagement skirt elements is limited by unitary plastic material bands.

5. ground instrument as claimed in claim 4, wherein said surface engagement skirt elements is wrapped by the support spine that is molded into intake nozzle.

6. as ground instrument in any one of the preceding claims wherein, wherein leading edge dangles downwards from intake nozzle, than the little certain distance of back edge, this distance 1 and 4mm between so that and floor surface be limited to 1 and 4mm between gap.

7. ground instrument as claimed in claim 6, wherein said distance is 3mm.

8. as ground instrument in any one of the preceding claims wherein, wherein longitudinally wall longitudinally extends along air-breathing chamber, air-breathing chamber is divided into the air-breathing chamber of front and rear.

9. ground instrument as claimed in claim 8, its mesospore comprises one or more openings, to allow fluid to flow, is passed in the opening between anterior air intake passage and rear portion air intake passage.

10. ground instrument as claimed in claim 8 or 9, wherein skirt section comprises transverse wall, it is in back edge and longitudinally between wall, extend, so that this air-breathing chamber is divided into the first and second sub-chamber, each sub-chamber has relevant air-breathing chamber outlet.

11. ground instruments as claimed in claim 9, extend between leading edge and back edge at the approximate mid-section place of wherein said wall between lateral edges.

12. ground instruments as claimed in claim 9, wherein said wall dangles downwards, is less than leading edge and the back edge certain distance in skirt section.

13. ground instruments as described in any one in claim 9 to 12, wherein said longitudinal wall comprises non-homogeneous profile along its length.

14. ground instruments as described in any one in claim 1 to 9, wherein skirt section comprises transverse wall, it extends between back edge and leading edge, so that this air-breathing chamber is divided into the first and second sub-chamber, each sub-chamber has relevant air-breathing chamber outlet.

15. ground instruments as claimed in claim 14, extend between leading edge and back edge at the approximate mid-section place of wherein said transverse wall between lateral edges.

16. ground instruments as claimed in claim 15, wherein said wall dangles downwards, is less than leading edge and the back edge certain distance in skirt section.

17. ground instruments as described in any one in claim 1 to 16, wherein said back edge comprises heterogeneous surface fillet along its length.

18. ground instruments as described in any one in claim 1 to 17, wherein at least one lateral edges comprises mane.

19. ground instruments as described in any one in claim 1 to 18, wherein main body also comprises supporting member, it is suitable for supporting cleaning element, and wherein intake nozzle is orientated the first edge of contiguous supporting member as.

20. ground instruments as claimed in claim 19, wherein another intake nozzle is set to orientate as second edge that is parallel to the first edge of contiguous supporting member.

21. ground instruments as claimed in claim 20, wherein said another intake nozzle is configured to basic identical with the first intake nozzle.

22. ground instruments as claimed in claim 21, when being subordinated to claim 9, wherein the opening in the longitudinal wall in the first intake nozzle has flow area, and this flow area is different from the flow area of the opening in longitudinal wall of the second intake nozzle.

23. 1 kinds of vacuum cleaners, comprise as ground instrument in any one of the preceding claims wherein.

24. 1 kinds of ground instruments, its as before herein with reference to as described in accompanying drawing and as shown in drawings.