CN1921791B

CN1921791B - Floor nozzle for a vacuum cleaner

Info

Publication number: CN1921791B
Application number: CN2005800060980A
Authority: CN
Inventors: 马库斯·科内利森
Original assignee: Vorwerk and Co Interholding GmbH
Current assignee: Vorwerk and Co Interholding GmbH
Priority date: 2004-02-03
Filing date: 2005-02-01
Publication date: 2010-10-13
Anticipated expiration: 2025-02-01
Also published as: ATE472285T1; EP1711096A1; CN1921791A; RU2006131593A; WO2005082220A1; DE502005009822D1; JP2007520293A; EP1711096B1; DE102004005144A1

Abstract

The invention relates to a floor nozzle (1) for a vacuum cleaner with a vacuum chamber (3) defined to the front and rear in the direction of advance (r) by first defining means (8), for example by sliding blocks (9), whereby an optional rotating brush (6) is arranged within the vacuum chamber (3). According to the invention, the manipulation of a conventional floor nozzle on vacuuming a carpeted floor may be improved, whereby the first defining means, arranged in the normal direction of advance is fixed over a part of the width of the vacuum chamber and may be displaced over a part of the width in a sliding manner.

Description

The floor nozzle of dust catcher

The present invention relates to a kind of by the described floor nozzle of claim 1 preamble feature.

The floor nozzle of described type is known.Be arranged in suction chamber front side and rear side and for example be the demarcation device of slide plate in form, especially work during operation on the ground of carpeting, this moment, floor nozzle was bearing on the carpet pile by slide plate, and they provide a kind of almost closure of sealing of suction chamber.Here confirmed already disadvantageously, and especially on dense and/or villose carpet, formed high negative pressure in suction chamber, this causes increasing and skid force being increased based on friction.The skid force of described increase makes dust catcher be difficult to use.

By the known a kind of floor nozzle of DE-A4412988, it has one and is tightened to the valve that the cross section in the detent position is roughly Y shape in advance with spring.Can through-flow better thick foul by this valve.This valve is forcibly reacted to this thick foul, that is it transfers to upturned position by applied force thus, but in case thick foul in suction port inside, valve just returns to the home position again based on spring force.

From described prior art, technical problem to be solved by this invention is, the floor nozzle that improves type noted earlier is the operability when the ground suction operation of carpeting especially.

Above-mentioned technical problem is by being solved in the content described in the claim 1.Delimit the side valve type design of the movable part of device by first of described front, make floor nozzle can be adjusted at the negative pressure that exists in the suction chamber.Preferably, first of this front demarcation device is a slide plate.

In view of above-mentioned prior art, technical problem to be solved by this invention is.Above-mentioned technical problem is solved by the content of claim 1.By in front first delimit the side valve type project organization of movable section of device, make floor nozzle can be adjusted at the negative pressure that forms in the suction chamber.Preferably, the first demarcation device in front is a slide plate.The movable part of the side valve type of this slide plate can be opened wide a thick thing mouth in the distolateral zone of floor nozzle, on the one hand, bypass air can by its flow into adjust negative pressure and thereby adjust skid force; Thick on the other hand thing can enter in the suction chamber zone that is in negative pressure state by unlimited mouth in the side valve type motion parts zone of this that demarcation device in front.In addition, the bypass air of inflow is taken away the foul that is in by in the bypass air port area of opening wide on carpet, and this just provides another advantage.According to the design of the present invention by the side valve type motion parts of the demarcation device of described front, not only can open a bypass air mouth and be used to adjust the interior negative pressure of suction chamber, and also cause delimiting device, preferred anterior slide plate thus, the possibility of absorbing thick thing better is provided, if because the slide plate of non-motion, they will block the import that thick thing is gone to suction chamber.In addition advantageously, the movable part of described demarcation device is located at the central authorities between two standing parts of this demarcation device.The width of the demarcation device of described side valve type motion equals 0.25 to 0.5 of floor nozzle width, preferably equal its 1/3rd.The central authorities that are located at that the movable part of delimiting device faced floor nozzle have also proved favourable distolaterally, because the user tends to absorb thicker foul in central authorities usually.By this limited, width that the preferred amount level is about whole floor nozzle width 1/3rd of the movable part of delimiting device, prevented pine and/or dense carpet or the carpet section sucks and arch is gone in mouth.Regulation in to another favourable expansion design of theme of the present invention is in any case delimit device for the movable part of described demarcation device sets one second in the place ahead along direction of propulsion.In addition, the second demarcation device in this place ahead preferably is designed to the lip shape and for example makes with a kind of material of energy elastic reset, thereby for example is the form of sealing lip.This second demarcation device also extends transverse to the common direction of propulsion ground of floor nozzle.In addition, second delimit device, for example sealing lip and can only be located in first zone of delimiting under the movable part of device.But preferred design is, this second is delimited device and extend along the whole width of floor nozzle, and thereby not only be positioned at first and delimit before the movable part of device, and be positioned at before its standing part.Also suggestion relevantly therewith, second delimits device delimits acquisition supporting on the device first when the first movable part of delimiting device is in the sinking state.In addition, described supporting is preferably also implemented in the zone under the standing part of the first demarcation device.Second delimits device, for example sealing lip, aspect its shape of cross section and elasticity, delimits in the zone of movable part of device first at least and is designed to, and when delimiting device and be bearing on the so-called standard carpet by first, it only allows little air mass flow.Consequently reach the almost completely sealing of suction chamber.If owing to make tractional force bring up to a heavy handled value for the user in negative pressure high in the suction chamber, then shift by first side valve type of delimiting the movable part of device, cancel the second demarcation device or the affiliated section supporting in the wings of the second demarcation device that described correspondence sets, so there is more air to be inhaled in the suction chamber by open effective air scoop or bypass air mouth, meanwhile, the second demarcation device or sealing lip move along airflow direction is inwardly curved.This has also brought another advantage, and promptly thick thing can enter below the sealing lip and no longer be subjected to first to delimit stopping of device or slide plate in this zone now.In addition, however the second demarcation device still more or less inserts in the carpet pile constantly.Therefore on the carpet of self-figure, cause the appearance of fabrics that remains unchanged along whole suction port width.Under the situation of high negative pressure, air flows through carpet below the sealing lip or the second demarcation device, and this air-flow also is used to free and carry foul.Advantageously, the first movable part of delimiting device has designed the supporting ridge in order to support the second demarcation device.The supporting ridge has than first towards the floor that is towards the direction on the ground that will safeguard delimits for example little development length of slide plate of device.Therefore will support the contact position that ridge is chosen as the ground that it is not entered and will safeguard.In addition also preferably, delimit device and second first and delimit space of formation between the device.In order when cancelling the supporting of passing through the first demarcation device in the rear, further to improve the elastic deflection of the second demarcation device, in an expansion design to theme of the present invention, crack in the zone of the movable part of the first demarcation device in any case second delimits device, to constitute the subregion of lip shape.Different with it, second delimits section device and the corresponding setting of the movable part described first demarcation device, also can be designed as the form of bristle bar.Can stipulate also that by another kind expansion design along two movable parts that device is delimited in the width design first of floor nozzle, they are located at first respectively and delimit between two standing parts of device.Obtain first thus and delimit two of device these two segmentations can have a public support or analog fully along floor nozzle width motion segmentation spaced from each other, thereby can make their simultaneously and slippage equably.Therefore, a central canned paragraph of the first demarcation device can be set, its profile preferably is designed to have a wedge shape that faces the wedge top of direction of propulsion.Based on this central canned paragraph, it is tabular that the first central fixed area of delimiting device is configured as skiing.If in the process that (after the first movable part of delimiting device having been moved on to a position that discharges thick thing mouth) floor nozzle shifts forward, thick thing arrives the canned paragraph that is also referred to as the supporting top of the first demarcation device, then this thick thing advance and the support of air-flow under, through left side or right side be directed in the suction chamber.In addition, by means of this central canned paragraph of the first demarcation device, in the whole zone of bypass air mouth that discharges by the first movable part of delimiting device or thick thing mouth, the net span of carpet is divided equally substantially.This carpet ground or carpet section are compressed by central canned paragraph, so it can not be drawn in the suction chamber.Therefore, still keep open even run into dense carpet by first mouth of delimiting the movable part release of device.The user can make the first movable componental movement of delimiting device by the control guiding valve, preferably will control on the outer surface of upper that guiding valve is contained in floor nozzle.Therefore, the user can for example react to the increase of skid force by the passing of pin control type, promotes more or less whereby or the described first movable part of delimiting device of sinking.The user can drop to minimum level with the negative pressure in the suction chamber thus, and continues the peak power level work with dust catcher in case of necessity, meanwhile can not bring negative influence to receiving of cleaning capacity, for example fiber.Suggestion at last, the described first movable part of delimiting device is guided on an arc section, and is also preferred simultaneously, the center of described circular arc be in be contained in the suction chamber can the rotation of motor-driven hairbrush on.

Describe the present invention in detail by the accompanying drawing of only representing two kinds of embodiments below.In the accompanying drawing:

Fig. 1 represents the detailed perspective by floor nozzle of the present invention;

Fig. 2 represents the schematic cross sectional view cut open according to the straight line II-II among Fig. 1, relates to first and delimits the subsidence position of the movable part of device slide block shape;

Fig. 3 represents the view corresponding with Fig. 2, but relates to the position after the slippage of movable demarcation device;

Fig. 4 represents the floor nozzle partial bottom view, relates to second kind of form of implementation;

Fig. 5 represents the end view according to the floor nozzle of second kind of embodiment;

Fig. 6 represents the detailed perspective of second kind of embodiment, relates to the subsidence position of movable part;

Fig. 7 represents the schematic perspective view corresponding with Fig. 6, but relates to the raised position of movable demarcation device.

At first by Fig. 1 to 3 expression and a floor nozzle that is used for not shown dust catcher according to the present invention is described.This floor nozzle 1 is designed to annex, and it can couple together at circuit with on flowing by an adapter 2 and dust catcher.

Take over 2 and one and observe in distolateral suction chamber 3 along direction of propulsion r and to be connected to each other by flow technique, suction chamber is extended transverse to direction of propulsion r ground in floor nozzle, and downwards, that is faces the ground 4 that will safeguard and be shaped one and stitch shape suction nozzle 5.

In addition, being equipped with one in suction chamber 3 can motor-driven rotatable hairbrush 6, and this hairbrush almost extends along whole suction chamber width transverse to direction of propulsion r ground equally.For the operation of scrubbing on ground 4, the bristle of hairbrush 6 stretches out from device bottom 7 by suction nozzle 5 at downside.

Suction chamber 3 or suction nozzle 5 along direction of propulsion r see in front and in the back with equally transverse to direction of propulsion r extend first to delimit device 8 be the boundary.They are designed to the form of slide plate 9, and slide plate contacts with ground 4 to be processed with the seamed edge that it constitutes the cavetto on suction nozzle 5 borders.

Slide plate 9 cross sections are designed to circular arc and are concentric with hairbrush axis ground arrange, and the further slide plate 9 that stretches out from device bottom 7 downwards constitutes the border of suction chamber under the situation that keeps circular shape towards the direction of this device interior.Relevant therewith suction chamber wall section is represented with Reference numeral 10.

In addition, with separated by a distance along direction of propulsion r that slide plate 9 in front, establish in form and delimit device 11 for second of sealing lip 12, it is made with a kind of material, for example elastomeric material of energy elastic reset.Observe in the back of rear portion slide plate 9 along direction of propulsion r, also establish a this sealing lip 12 or this second a demarcation device 11.Two sealing lips 12 all are fixed on the device housings 13 or in the zone of device bottom 7, and delimit the device 8 the same whole width extensions along floor nozzle 1 with first.In addition, second delimits device 11 sightingpiston in cross section vertically extends towards the ground 4 that will safeguard, and, one of each sealing lip 12 for example put down gently on the ground 4 that will clean or have a little spacing ground to pass through with it at the free seamed edge of fining away on the cross section.By two the second described layout structures of delimiting devices 11, the similar suction chamber 3 of setting up suction operation required negative pressure for being used to of forming between them has been determined the border.

Along direction of propulsion r first central sections of observing of delimiting device 8 in front along floor nozzle 1 width, be designed to the movable part 14 of side valve type, it is concentric with on the arc section that hairbrush axis x extends at one and guides.This movable part 14 approximates 1/3rd of floor nozzle width greatly along floor nozzle 1 width length measured.

Movable part 14 is positioned at first central authorities of delimiting between 8 two standing parts 15 of device.

In addition, the first movable part 14 of delimiting device 8 has a supporting ridge 16 that is formed in above it back to that side of suction chamber.When the first movable part 14 of delimiting device 8 is in by subsidence position shown in Figure 2, this supporting ridge is used for being arranged on second of front in the rear support correspondence and delimits device 11 or sealing lip 12, for this latter has a projection 17 that contacts with this supporting ridge 16 in respective segments.

The second demarcation device 11 or sealing lip 12 crack in order to constitute lip shape subregion along first width of delimiting the movable part 14 of device 8.

The first movable part 14 of delimiting device 8 is connected with the control guiding valve 19 that is located at floor nozzle 1 outer surface of upper 18 places by a drive link 18.By control guiding valve 19, can pass through user's manual control, the first movable part 14 of delimiting device 8 is transferred to the upper position from vertical its lowermost position shown in Figure 2.

The first movable part 14 of delimiting device 8 is designed to effective air guiding valve, meanwhile at this regional internal shaping slide plate 9 is arranged.In addition, a part of this guiding valve, that is supporting ridge 16, sealing lip 12 to the internal support front.The cross section and the material of the sealing lip 12 of front are chosen as in the zone of movable part 14 at least, and making does not have too much air inwardly to enter in the suction chamber 3 by means of this supporting ridge 16 on so-called standard carpet.If first guiding valve or the movable part 14 of delimiting device 8 moves upward on circuit orbit as shown in Figure 3 now, the corresponding sealing lip 12 that is provided with just loses inside supporting role.Therefore, it can allow air to flow into suction chamber 3 when negative pressure is too high, and meanwhile sealing lip 12 bends inwards.Skid force is reduced.This also brings an advantage, and promptly thick thing can enter below the sealing lip 12 and no longer be subjected to stopping of slide plate in this zone now, because it upwards shifts.In addition, however sealing lip 12 still more or less inserts in the carpet pile constantly.Therefore cause the appearance of fabrics that remains unchanged in the carpet upper edge of so-called self-figure suction port overall with.When negative pressure was too high, air flow through carpet below sealing lip 12, and this is used to free foul and be transported in the suction chamber equally.

Can adjust skid force by influence negative pressure by control guiding valve 19, the movable part 14 of the first demarcation device 8 more or less be promoted for this reason or sink.

Fig. 5 to 7 expression is by second kind of embodiment of floor nozzle 1 of the present invention, the difference of the embodiment that it and front have been introduced is, along two movable parts 14 that device 8 is delimited in the width design first of floor nozzle 1, they always are arranged on first and delimit between two standing parts 15 of device 8.Wherein be provided with a central canned paragraph 20 of the described first demarcation device 8, it is designed to a wedge shape that faces the wedge top 21 of direction of propulsion r in shape.The first central canned paragraph 20 of delimiting device 8 is connected with two standing parts 15 externally by bridge 22.

Adopt this layout, cause two sections in the zone of the floor nozzle 1 distolateral first demarcation device 8 in front, they can be used to as effective air scoop.First motion parts 14 of delimiting the effective air scoop of release of device 8 is connected to each other above skateboard, and it is common like that by drive link 25 and guiding valve 19 displacements to be equivalent to first kind of embodiment.

First moulding of delimiting the central standing part 20 of device 8 is similar to skis.If when movable demarcation device 14 is opened that is promoted to thick thing guiding valve, the wedge that thick thing arrives middle body 20 pushed up 21 places, then thick thing advance and the support of air-flow under be directed in the suction chamber 3 from a left side or from the right side through this standing part 20 otherly.By central standing part 20 is set, will be in effective air scoop zone, that is dividing equally substantially by the net span that promotes carpet to be processed in the zone that movable part 14 discharges, thereby prevent from especially dense carpet section to be drawn in the suction nozzle 5.Therefore, described central standing part 20 plays hold down gag.

All disclosed features are the important content of (basis) invention.Also comprise the relevant/disclosed content of priority document (in first to file) of enclosing in the disclosed content of the application, for this reason, the feature of these files also all is in the application's the protection domain.

Claims

1. the floor nozzle of a dust catcher (1), it has a suction chamber (3) that constitutes the border, front and back along direction of propulsion (r) by the first demarcation device (8), wherein, be provided with rotatable hairbrush (6) in described suction chamber (3) inside, and, described suction chamber (3) has a width that equals this suction chamber transverse to the development length of direction of propulsion (r), it is characterized by: described first delimit device (8) the described suction chamber of formation (3) ahead boundaries part along the partial width of this suction chamber (3) be fix and can move by side valve type along 0.25 to 0.5 of floor nozzle width; And the motion parts (14) of doing described side valve type motion of the described first demarcation device can promote and sink to influence the skid force of floor nozzle.

2. according to the described floor nozzle of claim 1, it is characterized by, the described first movable part (14) of delimiting device (8) is located at this first central authorities of delimiting between two standing parts (15) of device (8).

3. according to the described floor nozzle of claim 1, it is characterized by, delimit device (11) in any case set second accordingly in the place ahead along direction of propulsion (r) with the movable part (14) of described demarcation device (8).

4. according to 3 described floor nozzles in the claim, it is characterized by, described second delimits device (11) is designed to the lip shape.

5. according to the described floor nozzle of claim 3, it is characterized by, described second delimits device (11) makes with a kind of material of energy elastic reset.

6. according to each described floor nozzle in the claim 3 to 5, it is characterized by, described second delimits device (11) obtains supporting on this first demarcation device when the described first movable part (14) of delimiting device (8) is in the sinking state.

7. according to each described floor nozzle in the claim 3 to 5, it is characterized by, the described first movable part (14) of delimiting device (8) designs in order to support the described second demarcation device (11) supporting ridge (16).

8. according to the described floor nozzle of claim 7, it is characterized by, described supporting ridge (16) has the little length of a ratio first demarcation device (8) towards the direction on ground.

9. according to each described floor nozzle in the claim 3 to 5, it is characterized by, delimit device (8) and second described first and delimit space of formation between the device (11).

10. according to the described floor nozzle of claim 4, it is characterized by, described second delimits device (11) always is bearing in described first and delimits in the zone of movable part (14) of device (8) in order to constitute lip shape subregion.

11. according to each described floor nozzle in the claim 1 to 5, it is characterized by, width along described floor nozzle (1) designs described first two movable parts (14) of delimiting device (8), and they always are arranged between two standing parts (15) of this first demarcation device (8).

12. according to the described floor nozzle of claim 11, it is characterized by, be provided with described first and delimit the central canned paragraph (20) of the described suction chamber of formation (3) ahead boundaries of device (8).

13. according to the described floor nozzle of claim 12, it is characterized by, described first profile of delimiting the central canned paragraph (20) of device (8) is designed to have a wedge shape that faces the wedge top (21) of direction of propulsion (r).

14. according to each described floor nozzle in the claim 1 to 5, it is characterized by, described first delimits the movable part (14) of device (8) by control guiding valve (a 19) motion.

15. according to the described floor nozzle of claim 14, it is characterized by, described control guiding valve (15) is contained on the outer surface of upper (18) of floor nozzle (1).

16. according to each described floor nozzle in the claim 1 to 5, it is characterized by, the described first movable part (14) of delimiting device (8) is guided on an arc section.