EP2449934A2 - Suction nozzle assembly for a floor vacuum cleaner - Google Patents
Suction nozzle assembly for a floor vacuum cleaner Download PDFInfo
- Publication number
- EP2449934A2 EP2449934A2 EP11186312A EP11186312A EP2449934A2 EP 2449934 A2 EP2449934 A2 EP 2449934A2 EP 11186312 A EP11186312 A EP 11186312A EP 11186312 A EP11186312 A EP 11186312A EP 2449934 A2 EP2449934 A2 EP 2449934A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- suction
- suction nozzle
- articulation
- transverse axis
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 230000001186 cumulative effect Effects 0.000 claims description 6
- 230000008901 benefit Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 description 13
- 230000002349 favourable effect Effects 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000001955 cumulated effect Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L5/00—Structural features of suction cleaners
- A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
- A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
- A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
- A47L5/362—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back of the horizontal type, e.g. canister or sledge type
Definitions
- the invention relates to a suction nozzle arrangement for a canister vacuum cleaner, comprising a suction nozzle with a suction mouth, which has a front and a rear suction edge, wherein the suction nozzle is pivotable in a connecting part in a first joint about a front, horizontal transverse axis, further comprising a Saugrohrstutzen, which is pivotally connected to the connecting part about a second joint with a rear, horizontal transverse axis.
- the invention further relates to a floor vacuum cleaner equipped therewith.
- a suction nozzle arrangement of the type mentioned is from the utility model DE 20 2009 010 089 U1 known.
- the suction nozzle arrangement described therein consists of a suction nozzle with a transversely extending suction mouth, which is connectable to a vacuum source and is guided in the floor cleaning on the surface to be cleaned.
- the nozzle sole of the suction nozzle lies directly on the floor.
- the suction nozzle is usually further equipped with extendable busts, which raise the nozzle sole in use position, so that the suction brush slides on the projecting brush ends.
- thread catchers are also provided on the nozzle sole.
- the suction nozzle is pivotally mounted in a connecting part in a first joint about a front horizontal transverse axis in such a way that it consists of a ground parallel horizontal position can be raised within a predetermined by end stops angle.
- a second joint is further provided with a horizontal transverse axis, which allows tilting of the connecting part relative to the suction pipe.
- a substantially comparable suction nozzle arrangement in the form of a double-jointed nozzle is disclosed in the published patent application DE 10 2006 031 486 A1 described.
- the axis of rotation of the pair of rollers is arranged above the horizontal transverse axis of the second joint.
- the axes and the size of the rollers are dimensioned such that a vertical distance of 15 mm to 30 mm is provided between the contact point of the roller and the second joint of the connecting part.
- the suction pipe connection is in the second joint by an angle of 40 ° to 70 °, in particular by an angle of 50 ° to 60 °, pivotally.
- the tilting movement of the suction nozzle in the connecting part enabling, extending through the flow channel first joint is raised relative to the Saugdüsensohle by at least 35 mm, the suction nozzle by an angle of a maximum of 15 ° relative to the rest position until reaching a first stop position is tilted forward.
- the tilt angle is limited by reaching a second stop position by about 10 °.
- the front transverse axis of the first joint and the rear transverse axis of the second joint are in turn horizontally spaced in a range of 80 mm to 130 mm, in particular 90 mm to 110 mm.
- a double-jointed nozzle in which the suction nozzle has an arcuately curved outlet which is guided telescopically in a complementary pipe bend of the connecting part.
- the thereby determined horizontal transverse axis of the first joint is arranged behind the suction mouth and below the flow channel in the connecting part, while the second joint is located in the rear part of the connecting part slightly above the axis of rotation of the pair of rollers.
- An imaginary straight line, which connects the transverse axis of the first joint and the transverse axis of the second joint, thereby extends from front to rear by an angle of about 20 ° and hits the ground just behind the rear wall of the suction mouth. This is to ensure that the suction nozzle can be moved without tilting over the surface to be cleaned.
- FIG. 1 180 340 A2 Another arranged in a connecting part displaceable suction nozzle is in the European patent application EP 1 180 340 A2 disclosed.
- the suction nozzle is mounted vertically displaceable in this embodiment by means of a linear guide in the connecting part and is biased by a coil spring in the direction of the bottom.
- Suction nozzle arrangements of the type described above have basically proven in practice. However, not inconsiderable forces may be required to move the suction nozzle, which reduce the ease of use of the vacuum cleaner.
- the performance characteristics of vacuum cleaners for household use are determined according to the standard DIN EN 60312, for example with regard to the dust absorption capacity (Chapter 2.2.3) and the resistance to movement when moving the suction nozzle in the forward and reverse direction (Chapter 4.1). These properties are thus of particular importance both for a standard-compliant design of the vacuum cleaner as well as for a pleasant and effective handling. They are influenced by a variety of geometric and fluidic factors, which have to be matched to achieve a satisfactory result. In this case, a measure to improve a characteristic of use can certainly lead to a deterioration of another property.
- a specially trained suction nozzle is from the published patent application DE 10 2007 009 958 A1 known.
- Trained as sheet metal sole underside of the suction nozzle has a transversely extending suction mouth with on both sides of its long sides parallel to the ground extending support surfaces on which the suction nozzle slides when cleaning carpets.
- the width of the bearing surfaces is in this embodiment between 0.5 mm to 4 mm, preferably between 1 mm and 2 mm.
- the sheet-metal soleplate On the sides of the bearing surfaces facing away from the suction mouth, the sheet-metal soleplate is provided with angularly extending sliding surfaces, which in each case enclose an angle of 30 ° to 60 ° when cleaning with the floor.
- the regions of the sheet-metal soleplate assigned to the suction mouth, which form the front wall and the rear wall of the suction mouth, are bent approximately vertically upwards at an angle of 120 ° to 150 ° and respectively run with a radius of between 0.3 mm and 2 mm, in particular between 0.5 mm and 1 mm, in the assigned bearing surface.
- the geometry proposed in this document is capable of improvement with regard to a particularly high and uniform suction power with a pleasant sliding force.
- a suction nozzle with a front and a rear suction mouth is known, which are fluidly connected to a common mouth.
- This suction nozzle is also equipped with sliding surfaces, wherein a first, front sliding surface is provided from front to rear at an angle of 4 ° to 8 ° sloping to the front suction mouth, a second, middle sliding surface from front to back by 0.5 to 1, 5 mm sloping between the front and rear suction mouth is arranged and a third, rear Angleit Chemistry from front to rear with an angle of 1 ° and 5 ° rising behind the rear suction mouth.
- the Utility Model DE 29619645 U1 discloses a vacuum cleaner with suction head and operating rod, wherein a rotary swivel joint between the suction head and operating rod is arranged. It is stated that the pivot angle of the pivot joint is usually about 30 °.
- the publication US 2007/0067949 A1 discloses a vacuum cleaner with a nozzle body in which the actual nozzle is pivotally mounted about a hinge.
- the suction nozzle is curved at its lateral outlets to the front of the suction nozzle.
- In cross-section through the plane of symmetry of the suction nozzle includes one of the Joint axis to the front edge of the suction nozzle extending straight with a vertical according to the FIG. 2 an angle of about 55 °.
- the publication DE 3618803 A1 discloses a nozzle housing with 2 wheels arranged thereon. Such a housing is also from the published patent application DE 102008012889 A1 known. Next is on the publication DE 102007057349 A1 pointed.
- the invention has for its object to further develop a generic suction nozzle arrangement with respect to a reduction of the resistance to movement without affecting the dust-holding capacity.
- the object underlying the invention is in a suction nozzle arrangement for a vacuum cleaner, with a suction nozzle with a suction mouth, which has a front and a rear suction edge, wherein the suction nozzle is pivotable in a connecting part in a first joint about a front, horizontal transverse axis, further with a Saugrohrstutzen which is pivotally connected to the connecting part about a second joint with a rear, horizontal transverse axis, as well as with at least one roller, which is rotatably mounted about a first axis of rotation on the connecting part and offset from the first joint arranged rearwardly, thereby solved in that the longitudinal axis (G 2 ) of the intake manifold 14 with a vertical includes a rear articulation angle between 105 ° and 115 °.
- the intake manifold is intended for the connection of a suction pipe.
- the first and second joints are pivotable about their respective transverse axis, so the front and the rear transverse axis.
- Transverse axis means that the axis at provided operation of the suction nozzle assembly is substantially parallel to the ground, over which slides the suction nozzle of the suction nozzle assembly.
- the "front” joint is that of the two joints further away from the intake manifold, and the "rear” joint corresponding to the joint closer to the intake manifold.
- the "vertical" is orthogonal on a bottom of the front and rear suction edge and on the ground-level side of the roller adjacent straight line, which is hereinafter referred to as "horizontal".
- the vertical is perpendicular to an unyielding floor covering over which the suction nozzle of the suction nozzle assembly slides.
- the horizontal can be slightly offset and / or inclined by the immersion of the suction nozzle relative to the ground.
- the present inventors have found that with the rearward articulation angle according to the invention, with good dust pickup, the pushing force required to move the suction nozzle assembly over the ground, i. to move on the ground in a direction of movement parallel to the processed ground. It is particularly achievable that the power flow from the intake manifold in the direction of the suction mouth, especially when moving in the forward direction leads neither to burrowing of the suction nozzle in a resilient floor covering nor to unwanted lifting of the suction mouth, but the nozzle sole in a favorable position with respect to the friction force and dust pickup Aligns relative to the ground.
- a suction nozzle assembly for a vacuum cleaner with a suction nozzle with a suction mouth, which has a front and a rear suction edge, wherein the suction nozzle is pivotable in a connecting part in a first joint about a front, horizontal transverse axis
- a Saugrohrstutzen which is pivotally connected to the connecting part about a second hinge with a rear, horizontal transverse axis, and at least one roller, which rotatably mounted about a first axis of rotation on the connecting part and relative to the first joint according to Rear offset arranged, thereby achieved that a the front suction edge of the suction mouth and the front transverse axis of the first joint connecting straight line with a longitudinal axis (G 2 ) of the Saugrohrstutzens (14) includes a cumulative angle of articulation between 170 ° and 180 °, wherein the cumulative Angle of articulation ( ⁇ ) is the sum of the front articulation angle ( ⁇ ) is the sum of the front articulation angle (
- a suction nozzle assembly for a vacuum cleaner, having a suction nozzle with a suction mouth, which has a front and a rear suction edge, wherein the suction nozzle is pivotable in a connecting part in a first joint about a front, horizontal transverse axis , further comprising a suction tube, which is pivotally connected to the connecting part about a second joint with a rear, horizontal transverse axis, and at least one roller, which is rotatably mounted about a first axis of rotation on the connecting part and offset from the first joint rearwardly offset, achieved in that at least one slide on the connecting part (2) of the suction nozzle is rotatably mounted about a second axis of rotation, and the underside of the Gleitrads against a voltage applied from below to the front suction edge and rear suction edge and the roller straight up between 0.5 mm to 2.5 mm, in particular re between 1.0 and 1.5 mm, is spaced.
- the nozzle sole during the suction process as a result of the applied negative pressure easily in a resilient floor covering, especially a carpet immersed.
- the immersion depth for standard carpets may well be 2 mm.
- the object of the sliding wheels which are preferably arranged on both sides of the flow channel, is to guide the suction nozzle horizontally to the bottom surface during movement in the forward direction in order to prevent the suction nozzle from tipping over. Due to the distance according to the invention, the sliding wheel only comes into contact with the ground, However, if the suction nozzle dips beyond a predetermined amount in the resilient floor covering, does not increase the resistance to movement when not using the sliding roller. In addition, this arrangement leads to a particularly good dust collection when cleaning carpets.
- a vacuum cleaner with such a suction nozzle arrangement is also suitable.
- the rear articulation angle ( ⁇ ) is between 95 ° and 125 °, more preferably between 105 ° and 115 °.
- the inventors have found that in this design, a particularly good relationship between dust pickup and the pushing force required to move the suction nozzle assembly above the ground can be achieved.
- a particularly low movement resistance of the suction nozzle arrangement is achievable with the discs.
- the rear angle of articulation ( ⁇ ) is approximately 110 °.
- the front articulation angle ( ⁇ ) which encloses a straight line connecting the front suction edge of the suction mouth and the front transverse axis of the first articulation with a vertical extending downwards through the front transverse axis, is between 55 ° and 75 °, particularly preferably between 60 ° and 70 °. This too can advantageously contribute to a further reduction of the resistance to movement and thus to a particularly favorable ratio between dust pickup and the pushing force.
- the front angle of articulation ( ⁇ ) is approximately 65 °.
- the front suction edge of the suction mouth is the edge facing away from the front transverse axis.
- the cumulated angle of articulation ( ⁇ ) is between 170 ° and 180 °, more preferably between 173 ° and 177 °. In this way, a particularly favorable ratio between dust pickup and the pushing force, in particular a reduction of the resistance to movement, can be achieved overall. Particularly preferably, the cumulated angle of articulation ( ⁇ ) is approximately 175 °.
- the axis of rotation of the roller and the rear transverse axis of the second joint lie on a common vertical.
- the axis of rotation of the roller is vertically above or below the rear transverse axis.
- the connecting part can be supported by the roller advantageously in such a way that a particularly favorable introduction of force from the Saugrohrstutzen in the second joint and from there into the first joint.
- the axis of rotation of the roller (s) coincides with the rear transverse axis of the second joint.
- the diameter of the rollers is less than 75 mm, in particular between 40 mm and 60 mm, and with particular advantage approximately 50 mm.
- the first axis of rotation is thus less than 37.5 mm away from a (unyielding) bottom, and more preferably 25 mm vertically spaced therefrom.
- the preferred sliding wheel is arranged in the horizontal direction between the first joint and the second joint of the connecting part. This allows a particularly favorable ground-parallel alignment of the suction nozzle.
- the horizontal distance between the front transverse axis and the rear transverse axis i. the measured in a direction of a horizontal shortest distance between these two axes, is preferably between 80 and 90 mm, more preferably between 82 and 86 mm, particularly preferably about 84.5 mm.
- the present invention is particularly suitable for use with suction cups with metal sole.
- a metal sole is partially or even entirely made of metal, more preferably steel.
- a metal sole may be more resistant and therefore more durable than e.g. a sole made of plastic. Furthermore, it can contribute to an improvement in the ground contact and thus a further improved dust absorption by their weight. Also, it can give the suction nozzle a higher quality appearance.
- All directions and locations refer to a suction nozzle, which rests on a horizontal surface and in the forward direction, ie in the horizontal direction opposite to the longitudinal extension of a suction nozzle connected to the suction nozzle, is moved.
- suction nozzle assembly 1 consists of a connecting part 2, which is usually injection molded as a complex molded plastic component.
- a suction nozzle 3 is arranged, which is mounted via a first joint 4 about a front horizontal transverse axis 5 pivotally mounted in the connecting part 2.
- the housing of the suction nozzle is not shown for reasons of clarity.
- the suction nozzle 3 has a lubricious nozzle sole 6, which is guided directly over the bottom surface when cleaning a resilient floor covering.
- the nozzle sole 6 is pierced by a transversely extending suction mouth 7, which is in flow communication with the vacuum source of the vacuum cleaner and picks up the dust from the ground.
- a back arc-shaped projecting pipe bend 8 is provided, which is guided telescopically displaceable and sealed in a complementary shaped flow channel of the connecting part 2.
- the curvature of the pipe bend 8 and the associated region of the flow channel takes place equidistant from the front transverse axis 5.
- the suction mouth 7 is delimited by an approximately vertically extending front wall 9 and an approximately vertically extending rear wall 10, which form a front suction edge 11 and a rear suction edge 12 in the transition to the nozzle sole 6.
- an imaginary straight line G 1 is drawn in a lateral view, which with one of the transverse axis 5 downwardly facing vertical V includes a front articulation angle ⁇ of 65 °.
- a second joint 13 is provided, via which the connecting part 2 is rotatably connected about a rear horizontal transverse axis with the Saugrohrstutzen 14 for connecting a suction pipe.
- rollers 15 are arranged on the connecting part 2 on both sides of the flow channel, which are rotatable about a transverse, horizontal first axis of rotation 16 and support the connecting part 2 in the rear region on the ground.
- the rollers 15 have a diameter D of 50 mm, so that the rotation axis 16 has a vertical distance H of 25 mm to the ground.
- the longitudinal axis G 2 of the Saugrohrstutzens 14 includes with the vertical V a rear angle of articulation ⁇ of 110 °.
- the selected cumulated angle of articulation ⁇ of 175 ° causes the flow of power from the suction pipe 14 in the direction of the suction mouth 7, especially when moving in the forward direction neither burying the suction nozzle 3 in a resilient flooring nor to an unwanted lifting of the suction mouth 7 leads, but aligns the nozzle sole 6 in a favorable position with respect to the frictional force and dust removal position relative to the ground.
- the front articulation angle ⁇ of 65 ° is particularly favorable with a view to a gentle turning of the air flow in the flow channel and the associated avoidance of pneumatic power losses, whereby the dust absorption is improved at a given intake air quantity.
- Fig. 2 how out Fig. 2 can be seen, between the first joint 4 for the suction nozzle 3 and the first axis of rotation 16 of the rollers 15 sliding wheels 17 17 rotatably mounted on the connecting part 2 about a second, also transverse and horizontal axis of rotation 18. More precisely, the sliding wheels are mounted in the housing of the suction nozzle, not shown for reasons of clarity.
- the second axis of rotation 18 is approximately centrally between the first axis of rotation 16 and the transverse axis 5 are arranged such that the sliding wheels 17 are raised in the rest position by a distance h of 1.25 mm from the ground. When sucking hard floors, the sliding wheels 17 do not come into contact with the bottom surface.
- the nozzle sole 6 penetrates into the floor covering due to the negative pressure. This leads to a lowering of the connecting part 2 and thus to a seating of the sliding wheels 17 on the bottom surface. As a result, a further tilting is counteracted, which would cause a significant increase in the resistance to movement.
- the horizontal distance A between the front and the rear transverse axis is 84.5 mm in the exemplary embodiment.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
Abstract
Description
Die Erfindung betrifft eine Saugdüsenanordnung für einen Bodenstaubsauger, mit einer Saugdüse mit einem Saugmund, welcher eine vordere und eine hintere Saugkante aufweist, wobei die Saugdüse in einem Verbindungsteil in einem erstes Gelenk um eine vordere, horizontale Querachse schwenkbar ist, ferner mit einem Saugrohrstutzen, welcher mit dem Verbindungsteil um ein zweites Gelenk mit einer hinteren, horizontalen Querachse schwenkbar verbunden ist.The invention relates to a suction nozzle arrangement for a canister vacuum cleaner, comprising a suction nozzle with a suction mouth, which has a front and a rear suction edge, wherein the suction nozzle is pivotable in a connecting part in a first joint about a front, horizontal transverse axis, further comprising a Saugrohrstutzen, which is pivotally connected to the connecting part about a second joint with a rear, horizontal transverse axis.
Die Erfindung betrifft ferner einen damit ausgestatteten Bodenstaubsauger.The invention further relates to a floor vacuum cleaner equipped therewith.
Eine Saugdüsenanordnung der eingangs genannten Art ist aus der Gebrauchsmusterschrift
Die Saugdüse ist in einem Verbindungsteil in einem ersten Gelenk um eine vordere horizontale Querachse in der Weise schwenkbar gelagert, dass sie aus einer bodenparallelen Horizontalstellung innerhalb eines durch Endanschläge vorgegebenen Winkels angehoben werden kann. Zwischen dem mit dem Sauggebläse strömungsverbundenen Saugrohr und der Ausmündung der Saugdüse ist ferner ein zweites Gelenk mit einer horizontalen Querachse vorgesehen, welches ein Kippen des Verbindungsteils relativ zum Saugrohr ermöglicht. Durch diese Doppelgelenkanordnung werden Unebenheiten des Bodens sowie eine Schrägstellung des Verbindungsteils ausgeglichen und ein stets vorteilhaftes Aufliegen der Düsensohle auf dem Boden erzielt. Im Bereich des zweiten Gelenks verläuft ferner die Drehachse eines Laufrollenpaars, welches den hinteren Teil des Verbindungsteils am Boden abstützt. Diese Ausbildung soll einem unkontrollierten Verkippen der Saugdüse bei Vorwärts- und Rückwärtsbewegung entgegenwirken.The suction nozzle is pivotally mounted in a connecting part in a first joint about a front horizontal transverse axis in such a way that it consists of a ground parallel horizontal position can be raised within a predetermined by end stops angle. Between the suction pipe connected to the suction fan suction pipe and the mouth of the suction nozzle, a second joint is further provided with a horizontal transverse axis, which allows tilting of the connecting part relative to the suction pipe. By this double joint arrangement unevenness of the soil and an inclination of the connecting part are compensated and achieved always advantageous resting the nozzle sole on the floor. In the region of the second joint further extends the axis of rotation of a pair of rollers, which supports the rear part of the connecting part on the ground. This training is intended to counteract an uncontrolled tilting of the suction nozzle in forward and backward movement.
Eine im Wesentlichen vergleichbare Saugdüsenanordnung in Form einer Doppelgelenkdüse wird in der Offenlegungsschrift
In dem Gebrauchsmuster
Eine weitere in einem Verbindungsteil verlagerbar angeordnete Saugdüse wird in der europäischen Patentanmeldung
Die Gebrauchseigenschaften von Staubsaugern für den Hausgebrauch werden nach der Norm DIN EN 60312 bestimmt, beispielsweise hinsichtlich des Staubaufnahmevermögens (Kapitel 2.2.3) sowie des Bewegungswiderstandes beim Verschieben der Saugdüse in Vorwärts- und Rückwärtsrichtung (Kapitel 4.1). Diese Eigenschaften sind somit sowohl für eine normgerechte Ausbildung des Staubsaugers als auch für eine angenehme und wirkungsvolle Handhabung von besonderer Bedeutung. Sie werden durch eine Vielzahl geometrischer und strömungstechnischer Faktoren beeinflusst, die zur Erzielung eines zufriedenstellenden Ergebnisses aufeinander abzustimmen sind. Dabei kann eine Maßnahme zur Verbesserung einer Gebrauchseigenschaft durchaus zu einer Verschlechterung einer anderen Gebrauchseigenschaft führen.The performance characteristics of vacuum cleaners for household use are determined according to the standard DIN EN 60312, for example with regard to the dust absorption capacity (Chapter 2.2.3) and the resistance to movement when moving the suction nozzle in the forward and reverse direction (Chapter 4.1). These properties are thus of particular importance both for a standard-compliant design of the vacuum cleaner as well as for a pleasant and effective handling. They are influenced by a variety of geometric and fluidic factors, which have to be matched to achieve a satisfactory result. In this case, a measure to improve a characteristic of use can certainly lead to a deterioration of another property.
Aus dem Stand der Technik sind zahlreiche Maßnahmen hinsichtlich der Kontur der Düsensohle bekannt, welche einen Einfluss auf die Gebrauchseigenschaften und im Besonderen auch auf den Bewegungswiderstand des Staubsaugers haben. Eine besonders ausgebildete Saugdüse ist aus der Offenlegungsschrift
Aus der Patentschrift
Die Offenlegungsschrift
Die Offenlegungsschrift
Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Saugdüsenanordnung hinsichtlich einer Verringerung des Bewegungswiderstands ohne Beeinträchtigung des Staubaufnahmevermögens weiterzuentwickeln.The invention has for its object to further develop a generic suction nozzle arrangement with respect to a reduction of the resistance to movement without affecting the dust-holding capacity.
Die der Erfindung zugrunde liegende Aufgabe wird bei einer Saugdüsenanordnung für einen Bodenstaubsauger, mit einer Saugdüse mit einem Saugmund, welcher eine vordere und eine hintere Saugkante aufweist, wobei die Saugdüse in einem Verbindungsteil in einem ersten Gelenk um eine vordere, horizontale Querachse schwenkbar ist, ferner mit einem Saugrohrstutzen, welcher mit dem Verbindungsteil um ein zweites Gelenk mit einer hinteren, horizontalen Querachse schwenkbar verbunden ist, sowie mit mindestens einer Laufrolle, die um eine erste Drehachse drehbar am Verbindungsteil gelagert und gegenüber dem ersten Gelenk nach hinten versetzt angeordnet ist, dadurch gelöst, dass die Längsachse (G2) des Saugrohrstutzens 14 mit einer Vertikalen einen hinteren Anlenkwinkel zwischen 105° und 115° einschließt.The object underlying the invention is in a suction nozzle arrangement for a vacuum cleaner, with a suction nozzle with a suction mouth, which has a front and a rear suction edge, wherein the suction nozzle is pivotable in a connecting part in a first joint about a front, horizontal transverse axis, further with a Saugrohrstutzen which is pivotally connected to the connecting part about a second joint with a rear, horizontal transverse axis, as well as with at least one roller, which is rotatably mounted about a first axis of rotation on the connecting part and offset from the first joint arranged rearwardly, thereby solved in that the longitudinal axis (G 2 ) of the intake manifold 14 with a vertical includes a rear articulation angle between 105 ° and 115 °.
Der Saugrohrstutzen ist für den Anschluss eines Saugrohrs vorgesehen. Die ersten und zweiten Gelenke sind um ihre jeweilige Querachse, also die vordere beziehungsweise die hintere Querachse schwenkbar. "Querachse" meint dabei, dass die Achse beim vorgesehenen Betrieb der Saugdüsenanordnung im Wesentlichen parallel zum Boden verläuft, über den die Saugdüse der Saugdüsenanordnung gleitet. Im Sinne der vorliegenden Erfindung ist das "vordere" Gelenk dasjenige der beiden Gelenke, das vom Saugrohrstutzen weiter entfernt ist, und das "hintere" Gelenk entsprechend das Gelenk, das dem Saugrohrstutzen näher ist.The intake manifold is intended for the connection of a suction pipe. The first and second joints are pivotable about their respective transverse axis, so the front and the rear transverse axis. "Transverse axis" means that the axis at provided operation of the suction nozzle assembly is substantially parallel to the ground, over which slides the suction nozzle of the suction nozzle assembly. For the purposes of the present invention, the "front" joint is that of the two joints further away from the intake manifold, and the "rear" joint corresponding to the joint closer to the intake manifold.
Im Sinne der vorliegenden Erfindung steht die "Vertikale" orthogonal auf einer von unten an der vorderen und hinteren Saugkante sowie an der bodennahen Seite der Laufrolle anliegenden Gerade, die nachfolgend als "Horizontale" bezeichnet wird. Beim vorgesehenen Betrieb der Saugdüsenanordnung verläuft die Vertikale senkrecht zu einem unnachgiebigen Bodenbelag, über den die Saugdüse der Saugdüsenanordnung gleitet. Bei der Reinigung weicher Bodenbeläge, beispielsweise von Teppichböden, kann die Horizontale durch das Eintauchen der Saugdüse gegenüber dem Boden geringfügig versetzt und/oder geneigt verlaufen.For the purposes of the present invention, the "vertical" is orthogonal on a bottom of the front and rear suction edge and on the ground-level side of the roller adjacent straight line, which is hereinafter referred to as "horizontal". In the intended operation of the suction nozzle assembly, the vertical is perpendicular to an unyielding floor covering over which the suction nozzle of the suction nozzle assembly slides. When cleaning soft floor coverings, such as carpets, the horizontal can be slightly offset and / or inclined by the immersion of the suction nozzle relative to the ground.
Die Erfinder haben gefunden, dass mit dem erfindungsgemäßen hinteren Anlenkwinkel bei guter Staubaufnahme die Schiebkraft verringert werden kann, die erforderlich ist, um die Saugdüsenanordnung über den Boden, d.h. auf dem Boden in eine Bewegungsrichtung parallel zum bearbeiteten Boden zu bewegen. Es ist insbesondere erreichbar, dass der Kraftfluss vom Saugrohrstutzen in Richtung des Saugmunds insbesondere bei Bewegung in Vorwärtsrichtung weder zu einem Eingraben der Saugdüse in einen nachgiebigen Bodenbelag noch zu einem ungewollten Abheben des Saugmunds führt, sondern die Düsensohle in einer hinsichtlich der Reibkraft und Staubaufnahme günstigen Position relativ zum Boden ausrichtet.The present inventors have found that with the rearward articulation angle according to the invention, with good dust pickup, the pushing force required to move the suction nozzle assembly over the ground, i. to move on the ground in a direction of movement parallel to the processed ground. It is particularly achievable that the power flow from the intake manifold in the direction of the suction mouth, especially when moving in the forward direction leads neither to burrowing of the suction nozzle in a resilient floor covering nor to unwanted lifting of the suction mouth, but the nozzle sole in a favorable position with respect to the friction force and dust pickup Aligns relative to the ground.
Außerdem wird die der Erfindung zu Grunde liegende Aufgabe bei einer Saugdüsenanordnung für einen Bodenstaubsauger, mit einer Saugdüse mit einem Saugmund, welcher eine vordere und eine hintere Saugkante aufweist, wobei die Saugdüse in einem Verbindungsteil in einem erstes Gelenk um eine vordere, horizontale Querachse schwenkbar ist, ferner mit einem Saugrohrstutzen, welcher mit dem Verbindungsteil um ein zweites Gelenk mit einer hinteren, horizontalen Querachse schwenkbar verbunden ist, sowie mit mindestens einer Laufrolle, die um eine erste Drehachse drehbar am Verbindungsteil gelagert und gegenüber dem ersten Gelenk nach hinten versetzt anordnet ist, dadurch gelöst, dass eine die vordere Saugkante des Saugmunds und die vordere Querachse des ersten Gelenks verbindende Gerade mit einer Längsachse (G2) des Saugrohrstutzens (14) einen kumulierte Anlenkwinkel zwischen 170° und 180° einschließt, wobei der kumulierte Anlenkwinkel (χ) die Summe aus dem vorderen Anlenkwinkel (α), den eine die vordere Saugkante (11) des Saugmunds (7) und die vordere Querachse (5) des ersten Gelenks (4) verbindende Gerade (G1) mit einer durch die vordere Querachse (5) nach unten verlaufenden Vertikalen (V) einschließt, und einem hinteren Anlenkwinkel (β), der die Längsachse (G2) des Saugrohrstutzens (14) mit der Vertikalen (V) einschließt.In addition, the object underlying the invention in a suction nozzle assembly for a vacuum cleaner, with a suction nozzle with a suction mouth, which has a front and a rear suction edge, wherein the suction nozzle is pivotable in a connecting part in a first joint about a front, horizontal transverse axis , Further comprising a Saugrohrstutzen which is pivotally connected to the connecting part about a second hinge with a rear, horizontal transverse axis, and at least one roller, which rotatably mounted about a first axis of rotation on the connecting part and relative to the first joint according to Rear offset arranged, thereby achieved that a the front suction edge of the suction mouth and the front transverse axis of the first joint connecting straight line with a longitudinal axis (G 2 ) of the Saugrohrstutzens (14) includes a cumulative angle of articulation between 170 ° and 180 °, wherein the cumulative Angle of articulation (χ) is the sum of the front articulation angle (α), the straight line (G 1 ) connecting the front suction edge (11) of the suction mouth (7) and the front transverse axis (5) of the first articulation (4) Front transverse axis (5) includes downwardly extending vertical (V), and a rear angle of articulation (β), which includes the longitudinal axis (G 2 ) of the Saugrohrstutzens (14) with the vertical (V).
Schließlich wird die der Erfindung zu Grunde liegende Aufgabe bei einer Saugdüsenanordnung für einen Bodenstaubsauger, mit einer Saugdüse mit einem Saugmund, welcher eine vordere und eine hintere Saugkante aufweist, wobei die Saugdüse in einem Verbindungsteil in einem ersten Gelenk um eine vordere, horizontale Querachse schwenkbar ist, ferner mit einem Saugrohrstutzen, welcher mit dem Verbindungsteil um ein zweites Gelenk mit einer hinteren, horizontalen Querachse schwenkbar verbunden ist, sowie mit mindestens einer Laufrolle, die um eine erste Drehachse drehbar am Verbindungsteil gelagert und gegenüber dem ersten Gelenk nach hinten versetzt anordnet ist, dadurch gelöst, dass mindestens ein Gleitrad an dem Verbindungsteil (2) der Saugdüse um eine zweite Drehachse drehbar gelagert ist, und die Unterseite des Gleitrads gegenüber einer von unten an der vorderen Saugkante und hinteren Saugkante sowie der Laufrolle anliegenden Gerade nach oben zwischen 0,5 mm bis 2,5 mm, insbesondere zwischen 1,0 und 1,5 mm, beabstandet ist.Finally, the object underlying the invention in a suction nozzle assembly for a vacuum cleaner, having a suction nozzle with a suction mouth, which has a front and a rear suction edge, wherein the suction nozzle is pivotable in a connecting part in a first joint about a front, horizontal transverse axis , further comprising a suction tube, which is pivotally connected to the connecting part about a second joint with a rear, horizontal transverse axis, and at least one roller, which is rotatably mounted about a first axis of rotation on the connecting part and offset from the first joint rearwardly offset, achieved in that at least one slide on the connecting part (2) of the suction nozzle is rotatably mounted about a second axis of rotation, and the underside of the Gleitrads against a voltage applied from below to the front suction edge and rear suction edge and the roller straight up between 0.5 mm to 2.5 mm, in particular re between 1.0 and 1.5 mm, is spaced.
Diese Lösung fußt auf der Erkenntnis der Erfinder, dass die Düsensohle beim Saugvorgang infolge des anliegenden Unterdrucks leicht in einen nachgiebigen Bodenbelag, insbesondere einen Teppichboden, eintaucht. Bei einem Saugluftstrom von 40 Litern/Sekunde kann die Eintauchtiefe bei üblichen Teppichböden durchaus 2 mm betragen. Aufgabe der vorzugsweise beiderseits des Strömungskanals angeordneten Gleiträder ist es, die Saugdüse bei Bewegung in Vorwärtsrichtung waagerecht zur Bodenfläche zu führen, um ein Abkippen der Saugdüse zu verhindern. Durch den erfindungsgemäßen Abstand gelangt das Gleitrad nur dann in Kontakt mit dem Boden, wenn die Saugdüse über ein vorgegebenes Maß hinaus in den nachgiebigen Bodenbelag eintaucht, erhöht den Bewegungswiderstand bei Nichtgebrauch der Gleitrolle jedoch nicht. Darüber hinaus führt diese Anordnung beim Reinigen von Teppichböden zu einer besonders guten Staubaufnahme.This solution is based on the knowledge of the inventors that the nozzle sole during the suction process as a result of the applied negative pressure easily in a resilient floor covering, especially a carpet immersed. With a suction air flow of 40 liters / second, the immersion depth for standard carpets may well be 2 mm. The object of the sliding wheels, which are preferably arranged on both sides of the flow channel, is to guide the suction nozzle horizontally to the bottom surface during movement in the forward direction in order to prevent the suction nozzle from tipping over. Due to the distance according to the invention, the sliding wheel only comes into contact with the ground, However, if the suction nozzle dips beyond a predetermined amount in the resilient floor covering, does not increase the resistance to movement when not using the sliding roller. In addition, this arrangement leads to a particularly good dust collection when cleaning carpets.
Zur Lösung der erfindungsgemäßen Aufgabe ist ferner ein Bodenstaubsauger mit einer derartigen Saugdüsenanordnung geeignet.To achieve the object according to the invention, a vacuum cleaner with such a suction nozzle arrangement is also suitable.
Vorteilhafte Aus- oder Weiterbildungen, welche einzeln oder in Kombination miteinander eingesetzt werden können, sind Gegenstand der abhängigen Ansprüche.Advantageous embodiments or developments, which can be used individually or in combination with each other, are the subject of the dependent claims.
Es ist bevorzugt, dass der hintere Anlenkwinkel (β) zwischen 95° und 125°, besonders vorzugsweise zwischen 105° und 115° beträgt. Die Erfinder haben gefunden, dass bei dieser Auslegung ein besonders gutes Verhältnis zwischen Staubaufnahme und die Schiebkraft, die erforderlich ist, um die Saugdüsenanordnung über den Boden zu bewegen, erreicht werden kann. Insbesondere ist ein besonders geringer der Bewegungswiderstand Saugdüsenanordnung beim Scheiben erreichbar. Besonders vorzugsweise beträgt der hintere Anlenkwinkel (β) näherungsweise 110°.It is preferred that the rear articulation angle (β) is between 95 ° and 125 °, more preferably between 105 ° and 115 °. The inventors have found that in this design, a particularly good relationship between dust pickup and the pushing force required to move the suction nozzle assembly above the ground can be achieved. In particular, a particularly low movement resistance of the suction nozzle arrangement is achievable with the discs. Particularly preferably, the rear angle of articulation (β) is approximately 110 °.
Vorteilhaft ist ferner, dass der vordere Anlenkwinkel (α), den eine die vordere Saugkante des Saugmunds und die vordere Querachse des ersten Gelenks verbindende Gerade mit einer durch die vordere Querachse nach unten verlaufenden Vertikalen einschließt, zwischen 55° und 75°, besonders vorzugsweise zwischen 60° und 70° beträgt. Auch dies kann vorteilhafterweise zu einer weiteren Verringerung des Bewegungswiderstands und damit zu einem besonders günstigen Verhältnis zwischen Staubaufnahme und die Schiebkraft beitragen. Besonders vorzugsweise beträgt der vordere Anlenkwinkel (β) näherungsweise 65°. Im Sinne der vorliegenden Erfindung ist die vordere Saugkante des Saugmunds dessen der vorderen Querachse abgewandte Kante.It is also advantageous that the front articulation angle (α), which encloses a straight line connecting the front suction edge of the suction mouth and the front transverse axis of the first articulation with a vertical extending downwards through the front transverse axis, is between 55 ° and 75 °, particularly preferably between 60 ° and 70 °. This too can advantageously contribute to a further reduction of the resistance to movement and thus to a particularly favorable ratio between dust pickup and the pushing force. Particularly preferably, the front angle of articulation (β) is approximately 65 °. For the purposes of the present invention, the front suction edge of the suction mouth is the edge facing away from the front transverse axis.
Es ist ein erreichbarer Vorteil des erfindungsgemäßen vorderen Anlenkwinkel, dass bei guter Staubaufnahme die Schiebkraft verringert werden kann, die erforderlich ist, um die Saugdüsenanordnung über den Boden zu bewegen. Insbesondere ist erreichbar, dass einerseits eine hinsichtlich der Reibkraft günstige Ausrichtung der Düsensohle relativ zum Boden erzielt wird, andererseits jedoch auch ein sanftes Einlenken des Luftstroms in den Düsenkanal bewirkt wird, wodurch pneumatische Leistungsverluste vermieden und die Staubaufnahme verbessert werden kann.It is an achievable advantage of the front articulation angle according to the invention that, with good dust absorption, the pushing force required to move the suction nozzle arrangement over the ground can be reduced. In particular, it can be achieved that on the one hand a favorable frictional force of the nozzle sole is achieved relative to the ground, on the other hand, however, a gentle turning of the air flow is effected in the nozzle channel, whereby pneumatic power losses can be avoided and the dust receptacle can be improved.
In einer bevorzugten Ausführung der Erfindung beträgt der kumulierte Anlenkwinkel (χ) zwischen 170° und 180°, besonders vorzugsweise zwischen 173° und 177°. Hierdurch kann insgesamt ein besonders günstiges Verhältnis zwischen Staubaufnahme und die Schiebkraft, insbesondere eine Verringerung des Bewegungswiderstands, erzielt werden. Besonders vorzugsweise beträgt der kumulierte Anlenkwinkel (β) näherungsweise 175°.In a preferred embodiment of the invention, the cumulated angle of articulation (χ) is between 170 ° and 180 °, more preferably between 173 ° and 177 °. In this way, a particularly favorable ratio between dust pickup and the pushing force, in particular a reduction of the resistance to movement, can be achieved overall. Particularly preferably, the cumulated angle of articulation (β) is approximately 175 °.
Vorzugsweise liegen die Drehachse der Laufrolle und die hintere Querachse des zweiten Gelenks auf einer gemeinsamen Vertikalen. Mit anderen Worten, die Drehachse der Laufrolle liegt vertikal über oder unter der hinteren Querachse. In dieser Ausführung der Erfindung kann das Verbindungsteil durch die Laufrolle vorteilhaft in der Weise abgestützt werden, dass eine besonders günstige Krafteinleitung von dem Saugrohrstutzen in das zweite Gelenk und von da aus in das erste Gelenk erfolgt.Preferably, the axis of rotation of the roller and the rear transverse axis of the second joint lie on a common vertical. In other words, the axis of rotation of the roller is vertically above or below the rear transverse axis. In this embodiment of the invention, the connecting part can be supported by the roller advantageously in such a way that a particularly favorable introduction of force from the Saugrohrstutzen in the second joint and from there into the first joint.
Bei einer besonders bevorzugten Ausführung der Erfindung, fällt die Drehachse der Laufrolle(n) mit der hinteren Querachse des zweiten Gelenks zusammen. Hierdurch kann insbesondere die Konstruktion der erfindungsgemäßen Saugdüsenanordnung vereinfacht werden, da Komponenten der Drehachse zugleich zur Ausbildung des zweiten Gelenks genutzt werden können.In a particularly preferred embodiment of the invention, the axis of rotation of the roller (s) coincides with the rear transverse axis of the second joint. In this way, in particular the construction of the suction nozzle arrangement according to the invention can be simplified, since components of the rotation axis can be used at the same time for the formation of the second joint.
Mit Vorteil beträgt der Durchmesser der Laufrollen weniger als 75 mm, insbesondere zwischen 40 mm und 60 mm, und mit besonderem Vorteil näherungsweise 50 mm. Die erste Drehachse ist somit weniger als 37,5 mm von einem (unnachgiebigen) Boden entfernt und besonders bevorzugt 25 mm zu diesem vertikal beabstandet. Durch diese Dimensionierung können die vorteilhaften Anlenkwinkel mit einer Beschränkung der Längserstreckung des Düsengehäuses verbunden werden. Eine Vergrößerung des Laufrollendurchmessers über den angegebenem Bereich hinaus wäre zwar grundsätzlich durchführbar, würde jedoch zu einer unüblichen langen Saugdüsenanordnung führen.Advantageously, the diameter of the rollers is less than 75 mm, in particular between 40 mm and 60 mm, and with particular advantage approximately 50 mm. The first axis of rotation is thus less than 37.5 mm away from a (unyielding) bottom, and more preferably 25 mm vertically spaced therefrom. By this dimensioning, the advantageous angle of articulation with a restriction of Longitudinal extension of the nozzle housing can be connected. Although an enlargement of the roller diameter over the specified range addition would be feasible in principle, but would lead to an unusual long Saugdüsenanordnung.
Das bevorzugte Gleitrad ist in horizontaler Richtung zwischen dem ersten Gelenk und dem zweiten Gelenk des Verbindungsteils angeordnet. Dies ermöglicht eine besonders günstige bodenparallele Ausrichtung der Saugdüse.The preferred sliding wheel is arranged in the horizontal direction between the first joint and the second joint of the connecting part. This allows a particularly favorable ground-parallel alignment of the suction nozzle.
Der horizontale Abstand zwischen der vorderen Querachse und der hinteren Querachse, d.h. der in eine Richtung einer Horizontalen gemessene kürzeste Abstand zwischen diesen beiden Achsen, beträgt vorzugsweise zwischen 80 und 90 mm, besonders vorzugsweise zwischen 82 und 86 mm, besonders vorzugsweise ca. 84,5 mm.The horizontal distance between the front transverse axis and the rear transverse axis, i. the measured in a direction of a horizontal shortest distance between these two axes, is preferably between 80 and 90 mm, more preferably between 82 and 86 mm, particularly preferably about 84.5 mm.
Die vorliegende Erfindung eignet sich insbesondere für den Einsatz bei Saugdüsen mit Metallsohle. Eine Metallsohle besteht teilweise oder sogar vollständig aus Metall, besonders vorzugsweise Stahl. Eine Metallsohle kann widerstandsfähiger und damit haltbarer sein als z.B. eine Sohle aus Kunststoff. Weiter kann sie durch ihr Gewicht zu einer Verbesserung des Bodenkontakts und damit einer weiter verbesserten Staubaufnahme beitragen. Auch kann sie der Saugdüse eine hochwertigere Anmutung verleihen.The present invention is particularly suitable for use with suction cups with metal sole. A metal sole is partially or even entirely made of metal, more preferably steel. A metal sole may be more resistant and therefore more durable than e.g. a sole made of plastic. Furthermore, it can contribute to an improvement in the ground contact and thus a further improved dust absorption by their weight. Also, it can give the suction nozzle a higher quality appearance.
Die Erfindung wird im Folgenden anhand schematischer Zeichnungen an einem Ausführungsbeispiel mit weiteren Einzelheiten näher erläutert.The invention is explained in more detail below with reference to schematic drawings of an exemplary embodiment with further details.
Es zeigen:
- Fig. 1:
- einen Teillängsschnitt durch eine erfindungsgemäße Saugdüsenanordnung;
- Fig. 2:
- einen weiteren Längsschnitt durch die Saugdüsenanordnung nach
Fig. 1 mit Darstellung eines Gleitrads.
- Fig. 1:
- a partial longitudinal section through a suction nozzle arrangement according to the invention;
- Fig. 2:
- a further longitudinal section through the suction nozzle arrangement according to
Fig. 1 with representation of a sliding wheel.
Alle Richtungs- und Ortsangaben beziehen sich auf eine Saugdüse, welche auf einer horizontalen Fläche aufliegt und in Vorwärtsrichtung, also in horizontaler Richtung entgegen der Längserstreckung eines mit der Saugdüse verbundenen Saugrohrstutzens, bewegt wird.All directions and locations refer to a suction nozzle, which rests on a horizontal surface and in the forward direction, ie in the horizontal direction opposite to the longitudinal extension of a suction nozzle connected to the suction nozzle, is moved.
Die in
Nach vorne und hinten ist der Saugmund 7 durch eine näherungsweise senkrecht verlaufende Vorderwand 9 sowie eine näherungsweise senkrecht verlaufende Rückwand 10 begrenzt, welche im Übergang zur Düsensohle 6 eine vordere Saugkante 11 und eine hintere Saugkante 12 ausbilden. Durch die vordere Querachse 5 und die vordere Saugkante 11 ist in seitlicher Ansicht eine gedachte Gerade G1 gezeichnet, welche mit einer aus der Querachse 5 nach unten weisenden Vertikalen V einen vorderen Anlenkwinkel α von 65° einschließt.Forwards and backwards, the suction mouth 7 is delimited by an approximately vertically extending
Im hinteren Bereich des Verbindungsteils 2 ist ein zweites Gelenk 13 vorgesehen, über welches das Verbindungsteil 2 um eine hintere horizontal verlaufende Querachse mit dem Saugrohrstutzen 14 zum Anschluss eines Saugrohrs drehverbunden ist. Im unteren Bereich des zweiten Gelenks 13 sind beiderseits des Strömungskanals Laufrollen 15 am Verbindungsteil 2 angeordnet, welche um eine quer verlaufende, horizontale erste Drehachse 16 drehbar sind und das Verbindungsteil 2 im hinteren Bereich am Boden abstützen. Die Laufrollen 15 weisen einen Durchmesser D von 50 mm auf, so dass die Drehachse 16 einen vertikalen Abstand H von 25 mm zum Boden aufweist. Die Längsachse G2 des Saugrohrstutzens 14 schließt mit der Vertikalen V einen hinteren Anlenkwinkel β von 110° ein.In the rear region of the connecting
Die Summe aus dem vorderen Anlenkwinkel α und dem hinteren Anlenkwinkel β bildet den kumulierten Anlenkwinkel χ = α + β.The sum of the front articulation angle α and the rear articulation angle β forms the cumulative angle of articulation χ = α + β.
Durch den gewählten kumulierten Anlenkwinkel χ von 175° wird bewirkt, dass der Kraftfluss vom Saugrohrstutzen 14 in Richtung des Saugmunds 7 insbesondere bei Bewegung in Vorwärtsrichtung weder zu einem Eingraben der Saugdüse 3 in einen nachgiebigen Bodenbelag noch zu einem ungewollten Abheben des Saugmunds 7 führt, sondern die Düsensohle 6 in einer hinsichtlich der Reibkraft und Staubaufnahme günstigen Position relativ zum Boden ausrichtet. Dabei ist der vordere Anlenkwinkel α von 65° besonders günstig mit Blick auf ein sanftes Einlenken des Luftstroms in den Strömungskanal und das damit verbundene Vermeiden pneumatischer Leistungsverluste, wodurch die Staubaufnahme bei vorgegebener Saugluftmenge verbessert wird.By the selected cumulated angle of articulation χ of 175 ° causes the flow of power from the suction pipe 14 in the direction of the suction mouth 7, especially when moving in the forward direction neither burying the
Wie aus
Der horizontale Abstand A zwischen der vorderen und der hinteren Querachse beträgt in dem Ausführungsbeispiel 84,5 mm.The horizontal distance A between the front and the rear transverse axis is 84.5 mm in the exemplary embodiment.
Die in der vorstehenden Beschreibung, den Ansprüchen und den Zeichnungen offenbarten Merkmale können sowohl einzeln als auch in beliebiger Kombination für die Verwirklichung der Erfindung in ihren verschiedenen Ausgestaltungen von Bedeutung sein.The features disclosed in the foregoing description, the claims and the drawings may be of importance both individually and in any combination for the realization of the invention in its various forms.
- 11
- Saugdüsenanordnungsuction nozzle
- 22
- Verbindungsteilconnecting part
- 33
- Saugdüsesuction nozzle
- 44
- Gelenkjoint
- 55
- Querachse (vorne)Transverse axis (front)
- 66
- Düsensohlenozzles sole
- 77
- Saugmundsaugmund
- 88th
- RohrbogenElbows
- 99
- Vorderwandfront wall
- 1010
- Rückwandrear wall
- 1111
- Saugkante (vorne)Suction edge (front)
- 1212
- Saugkante (hinten)Suction edge (rear)
- 1313
- Gelenkjoint
- 1414
- Saugrohrstutzenshort conduits
- 1515
- Laufrollecaster
- 1616
- Querachse (hinten)Transverse axis (rear)
- 16'16 '
- Drehachse (der Laufrolle 15)Rotary axis (the roller 15)
- 1717
- Gleitradsliding wheel
- 1818
- Drehachse (des Gleitrads 17)Rotary axis (of the sliding wheel 17)
- αα
- vorderer Anlenkwinkelfront articulation angle
- ββ
- hinterer Anlenkwinkelrear angle of articulation
- χχ
- kumulierter Anlenkwinkelcumulated angle of articulation
- AA
- Horizontaler Abstand zwischen der vorderen und der hinteren QuerachseHorizontal distance between the front and rear transverse axis
- DD
- Durchmesser (der Laufrolle 15)Diameter (roller 15)
- G1 G 1
- Gerade (Querachse 5 zu Saugkante 11)Straight (transverse axis 5 to suction edge 11)
- G2 G 2
- Längsachse des SaugrohrstutzensLongitudinal axis of the Saugrohrstutzens
- G3 G 3
-
Gerade (Saugkante 11 über Saugkante 12 zu Unterseite Laufrolle 15)Straight (
suction edge 11 viasuction edge 12 to underside roller 15) - hH
-
Abstand (Gleitrad 17 zur Geraden G3)Distance (sliding
wheel 17 to the straight line G 3 ) - HH
- Abstand (Drehachse 16 zur Geraden G3)Distance (rotation axis 16 to the straight line G 3 )
- VV
- Vertikalevertical
Claims (12)
eine die vordere Saugkante (11) des Saugmunds (7) und die vordere Querachse (5) des ersten Gelenks (4) verbindende Gerade (G1) mit einer Längsachse (G2) des Saugrohrstutzens (14) einen kumulierte Anlenkwinkel (χ) zwischen 170° und 180° einschließt, wobei der kumulierte Anlenkwinkel (χ) die Summe aus dem vorderen Anlenkwinkel (α), den eine die vordere Saugkante (11) des Saugmunds (7) und die vordere Querachse (5) des ersten Gelenks (4) verbindende Gerade (G1) mit einer durch die vordere Querachse (5) nach unten verlaufenden Vertikalen (V) einschließt, und einem hinteren Anlenkwinkel (β), den die Längsachse (G2) des Saugrohrstutzens (14) mit der Vertikalen (V) einschließt.Suction nozzle arrangement (1) for a vacuum cleaner with a suction nozzle (3) with a suction mouth (7), which has a front and a rear suction edge (11, 12), wherein the suction nozzle (3) in a connecting part (2) in a first Joint (4) about a front horizontal transverse axis (5) is pivotable, further comprising a Saugrohrstutzen (14) which is pivotally connected to the connecting part (2) about a second hinge (13) with a rear, horizontal transverse axis (16) , and with at least one roller (15) which is rotatably mounted about a first axis of rotation (16 ') on the connecting part (2) and relative to the first joint (4) after Rear offset arranged, in particular according to one of claims 1 to 3, characterized in that
a straight line (G 1 ) connecting the front suction edge (11) of the suction mouth (7) and the front transverse axis (5) of the first articulation (4) with a longitudinal axis (G 2 ) of the suction pipe stub (14) interposes an accumulated angle of articulation (χ) 170 ° and 180 °, wherein the cumulative angle of articulation (χ) is the sum of the front articulation angle (α), one of the front suction edge (11) of the suction mouth (7) and the front transverse axis (5) of the first articulation (4). connecting straight line (G 1 ) with a through the front transverse axis (5) extending downwards vertical (V), and a rear angle of articulation (β), the longitudinal axis (G 2 ) of the Saugrohrstutzens (14) with the vertical (V) includes.
eine die vordere Saugkante (11) des Saugmunds (7) und die vordere Querachse (5) des ersten Gelenks (4) verbindende Gerade (G1) mit einer Längsachse (G2) des Saugrohrstutzens (14) einen kumulierte Anlenkwinkel (χ) zwischen 170° und 180° einschließt, wobei der kumulierte Anlenkwinkel (χ) die Summe aus dem vorderen Anlenkwinkel (α), den eine die vordere Saugkante (11) des Saugmunds (7) und die vordere Querachse (5) des ersten Gelenks (4) verbindende Gerade (G1) mit einer durch die vordere Querachse (5) nach unten verlaufenden Vertikalen (V) einschließt, und einem hinteren Anlenkwinkel (β), den die Längsachse (G2) des Saugrohrstutzens (14) mit der Vertikalen (V) einschließt.Suction nozzle arrangement according to one of claims 1 to 3, characterized in that
a straight line (G 1 ) connecting the front suction edge (11) of the suction mouth (7) and the front transverse axis (5) of the first articulation (4) with a longitudinal axis (G 2 ) of the suction pipe stub (14) interposes an accumulated angle of articulation (χ) 170 ° and 180 °, wherein the cumulative angle of articulation (χ) is the sum of the front articulation angle (α), one of the front suction edge (11) of the suction mouth (7) and the front transverse axis (5) of the first articulation (4). connecting straight line (G 1 ) with a through the front transverse axis (5) extending downwards vertical (V), and a rear angle of articulation (β), the longitudinal axis (G 2 ) of the Saugrohrstutzens (14) with the vertical (V) includes.
die Drehachse (16') der Laufrolle (15) und die hintere Querachse (16) des zweiten Gelenks (13) auf einer gemeinsamen Vertikalen liegen.Suction nozzle arrangement according to one of the preceding claims, characterized in that
the axis of rotation (16 ') of the roller (15) and the rear transverse axis (16) of the second articulation (13) lie on a common vertical.
der Durchmesser (D) der Laufrolle (15) weniger als 75 mm, insbesondere zwischen 40 mm und 60 mm, und mit besonderem Vorteil näherungsweise 50 mm, beträgt.Suction nozzle arrangement according to one of the preceding claims, characterized in that
the diameter (D) of the roller (15) is less than 75 mm, in particular between 40 mm and 60 mm, and with particular advantage approximately 50 mm.
mindestens ein Gleitrad (17) an dem Verbindungsteil (2) der Saugdüse (3) um eine zweite Drehachse (18) drehbar gelagert ist, und die Unterseite des Gleitrads (17) gegenüber einer von unten an der vorderen Saugkante (11) und hinteren Saugkante (12) sowie der Laufrolle (15) anliegenden Gerade (G3) nach oben zwischen 0,5 mm bis 2,5 mm, insbesondere zwischen 1,0 und 1,5 mm, beabstandet ist.Suction nozzle arrangement (1) for a vacuum cleaner with a suction nozzle (3) with a suction mouth (7), which has a front and a rear suction edge (11, 12), wherein the suction nozzle (3) in a connecting part (2) in a first Joint (4) about a front horizontal transverse axis (5) is pivotable, further comprising a Saugrohrstutzen (14) which is pivotally connected to the connecting part (2) about a second hinge (13) with a rear, horizontal transverse axis (16) , and with at least one roller (15) which is rotatably mounted about a first axis of rotation (16) on the connecting part (2) and offset relative to the first joint (4) rearwardly, in particular according to one of claims 1 to 9, characterized that
at least one sliding wheel (17) on the connecting part (2) of the suction nozzle (3) about a second axis of rotation (18) is rotatably mounted, and the underside of the Gleitrads (17) opposite to a bottom of the front suction edge (11) and rear suction edge (12) and the roller (15) adjacent straight line (G 3 ) is upwardly between 0.5 mm to 2.5 mm, in particular between 1.0 and 1.5 mm, spaced.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010043515.5A DE102010043515B4 (en) | 2010-11-05 | 2010-11-05 | Suction nozzle arrangement and vacuum cleaner |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2449934A2 true EP2449934A2 (en) | 2012-05-09 |
EP2449934A3 EP2449934A3 (en) | 2017-12-27 |
EP2449934B1 EP2449934B1 (en) | 2020-01-01 |
Family
ID=45491232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11186312.2A Active EP2449934B1 (en) | 2010-11-05 | 2011-10-24 | Suction nozzle assembly for a floor vacuum cleaner |
Country Status (2)
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EP (1) | EP2449934B1 (en) |
DE (1) | DE102010043515B4 (en) |
Cited By (8)
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WO2014146734A1 (en) * | 2013-03-21 | 2014-09-25 | Aktiebolaget Electrolux | Vacuum cleaner nozzle with hinged rigid parts |
CN105266711A (en) * | 2014-06-03 | 2016-01-27 | 德国福维克控股公司 | Cleaner nozzle for a vacuum cleaner |
US20170280956A1 (en) * | 2016-03-31 | 2017-10-05 | New Ermes Europe S.R.L. | Suction head with improved suction channel |
USD922014S1 (en) | 2018-09-18 | 2021-06-08 | New Ermes S.r.l. | Accessory for vacuum cleaners |
CN113349676A (en) * | 2020-03-03 | 2021-09-07 | 苏州市春菊电器有限公司 | Dust collector floor brush with flexible rotating shaft structure |
US11224319B2 (en) | 2017-12-11 | 2022-01-18 | New Ermes Europe S.R.L. | Base plate for a vacuum cleaner suction head for the suction of fine dust and large debris |
USD953673S1 (en) | 2020-02-17 | 2022-05-31 | New Ermes Europe S.R.L. | Head of a vacuum cleaner |
US11564544B2 (en) | 2020-01-28 | 2023-01-31 | New Ermes Europe S.R.L. | Adapter device for a cordless electric vacuum cleaner |
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DE102012106570B4 (en) * | 2012-07-19 | 2014-08-28 | Wessel-Werk Gmbh | Vacuum cleaner nozzle, in particular for household vacuum cleaners |
DE102018122352A1 (en) * | 2018-09-13 | 2020-03-19 | Miele & Cie. Kg | Floor nozzle with a wheel arrangement, vacuum cleaner with a floor nozzle and method for producing a floor nozzle |
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US11564544B2 (en) | 2020-01-28 | 2023-01-31 | New Ermes Europe S.R.L. | Adapter device for a cordless electric vacuum cleaner |
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CN113349676A (en) * | 2020-03-03 | 2021-09-07 | 苏州市春菊电器有限公司 | Dust collector floor brush with flexible rotating shaft structure |
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Also Published As
Publication number | Publication date |
---|---|
DE102010043515A1 (en) | 2012-05-10 |
EP2449934A3 (en) | 2017-12-27 |
EP2449934B1 (en) | 2020-01-01 |
DE102010043515B4 (en) | 2014-10-16 |
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