EP1531202B1 - Sweeper - Google Patents

Sweeper Download PDF

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Publication number
EP1531202B1
EP1531202B1 EP04026985A EP04026985A EP1531202B1 EP 1531202 B1 EP1531202 B1 EP 1531202B1 EP 04026985 A EP04026985 A EP 04026985A EP 04026985 A EP04026985 A EP 04026985A EP 1531202 B1 EP1531202 B1 EP 1531202B1
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EP
European Patent Office
Prior art keywords
housing
pivot arm
handle
pivot
sweeper according
Prior art date
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Application number
EP04026985A
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German (de)
French (fr)
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EP1531202A3 (en
EP1531202A2 (en
Inventor
Roland Schick
Hans-Peter Wolf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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Publication of EP1531202A2 publication Critical patent/EP1531202A2/en
Publication of EP1531202A3 publication Critical patent/EP1531202A3/en
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Classifications

    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/22—Floor-sweeping machines, hand-driven
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4041—Roll shaped surface treating tools
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4052—Movement of the tools or the like perpendicular to the cleaning surface
    • A47L11/4058—Movement of the tools or the like perpendicular to the cleaning surface for adjusting the height of the tool
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/02—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt
    • E01H1/04—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt taking- up the sweepings, e.g. for collecting, for loading
    • E01H1/045—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt taking- up the sweepings, e.g. for collecting, for loading the loading means being a rotating brush with horizontal axis

Definitions

  • the invention relates to a sweeper with the features of the preamble of claim 1,
  • a floor area for example a parking space or a hall area
  • the sweeping material is transferred by means of the rotatable sweeping roller in the hopper.
  • the sweeping roller has a plurality of bristles, and frequent use of the sweeper on rough ground surfaces can lead to wear of the bristles, so that the position of the sweeping roller must be readjusted to the ground surface to be cleaned.
  • a similarly configured height adjustment device whose position can also be adjusted by means of a set screw, is from the DE 87 17 834 U1 known.
  • the use of screws requires in most cases the use of additional tools to change the broom in position, since the screws usually sit tight and therefore can not be solved by hand easily.
  • a change in position of the sweeping roller usually several revolutions of the screws are required, this leads to a cumbersome handling.
  • Another disadvantage is that the user can only poorly recognize the actual position of the sweeping roller based on the screws, so that an additional display device is required to make the position of the sweeping roller for the user recognizable.
  • a sweeper of the type mentioned in which the height adjustment cooperates with a structurally complex adjustment mechanism, which has a protruding from the housing of the sweeper turntable with recessed grips, is rotatably held on an eccentric, which in turn cooperates with a two-armed lever height adjustment ,
  • the eccentric on the outside on several locking recesses into which a detent of the two-armed lever can engage.
  • the two-armed lever is resiliently biased by a spring in the direction of the locking recesses of the eccentric.
  • To adjust the height of the user must overcome the elastic biasing force to rotate the turntable, with unfavorable leverage, so that the height adjustment of the sweeping roller a considerable amount of force may be required
  • a sweeper is known in which a sweeping roller is rotatably supported on two pivotable support arms. To adjust the height of the sweeping roller it can be lifted by means of a frame which is also mounted pivotably.
  • a sweeper is known with a housing, a hopper and a sweeping roller covered by the housing, which is rotatably mounted on a height adjustment device about a rotation axis.
  • the height adjustment device comprises two support arms in the form of cheeks on which the sweeping roller is rotatably mounted.
  • the height adjustment device is pivotable about a pivot axis aligned parallel to the axis of rotation of the sweeping roller.
  • the adjusting mechanism has a pivotable about the pivot axis Swivel lever, which moves in the course of a pivoting movement along a side part of the housing.
  • Object of the present invention is to develop a generic sweeper such that the position of the sweeping roller can be changed with relatively little effort, the sweeper having a structurally simple structure.
  • a handle is disposed on the protruding from the housing end portion of the pivot arm, which is held between a detent position in which the pivot arm is locked, and a release position in which the pivot arm is pivotable, reciprocally movable on the pivot arm is. If the position of the sweeping roller to be changed, so this can be moved from its locking position to its release position of the handle and then the pivot arm can be pivoted to the desired pivot position and then locked again by means of the handle, preferably locked to the housing.
  • the transition between the detent position and the release position of the handle can be done for example by rotation of the handle.
  • a structurally particularly simple embodiment of the sweeper can be achieved in that the handle in the longitudinal direction of the pivot arm is displaced back and forth. To release the handle from its rest position, for example, be provided that the handle is pressed by the user in the direction of the pivot axis.
  • a particularly simple handling can be achieved in that the transition of the handle from its detent position to its release position by lifting the handle from the housing. The user must in such an embodiment, the handle only slightly pull outward and then can transfer the pivot arm in a new pivot position.
  • latching elements for example latching nubs or latching depressions
  • latching elements are arranged on the housing and are arranged with corresponding latching elements of the latching elements Handle together.
  • the locking elements, with which the handle is engageable are arranged on the outside of the housing.
  • the handle on its housing-facing underside has locking receptacles, engage in the outside of the housing arranged locking nubs.
  • the handle has a housing surrounding the end region of the pivot arm surrounding sleeve, which is resiliently biased by a spring element in the direction of the locking elements of the housing.
  • the sleeve is held displaceably in the longitudinal direction of the pivot arm and, contrary to the action of the spring element, can move from a detent position in which it bears against the detent elements of the housing into a release position in which it is positioned at a distance from the detent elements arranged on the housing. be transferred.
  • the release position of the handle is predetermined in an advantageous embodiment of the invention by a stop element, which is arranged on the protruding from the housing end of the pivot arm.
  • the stop element can in this case form a counter holder for the user when operating the handle. This is particularly advantageous in light-weight, hand-pushed sweepers that can be moved with little force. It is favorable in this case if the spring element is clamped between the stop and the sleeve.
  • the spring element can be configured as a coil spring surrounding the pivoting arm.
  • the sleeve can be acted upon with a compressive force in the direction of the housing of the sweeper.
  • the sleeve surrounds the coil spring in the circumferential direction.
  • the sleeve thus forms a mechanical protection for the coil spring.
  • the sweeper has two wheels and at least one support wheel, wherein the wheels are rotatable about a common axle and wherein the pivot axis of the height adjustment device is aligned coaxially to the wheel axle.
  • the wheels may be coupled via a drive train with the sweeping roller, so that the rotational movement of the wheels is transmitted to the sweeping roller.
  • the orientation of the pivot axis of the height adjustment coaxial with the wheel axle of the wheels has the advantage that during a pivoting movement of the height adjustment of the drive train between the wheels and the sweeping roller does not need to be readjusted
  • the housing engages over the sweeping roller.
  • a particularly simple operation of the sweeper for changing the position of the sweeping roller can be achieved in that the housing in a sweeping roller overlapping region based on the pivot axis is arc-shaped, because this has the advantage that when pivoting the pivot arm of the distance, the Handle to the housing, remains unchanged.
  • FIG. 1 schematically a sweeper 10 is shown with a frame 12 to which a hopper 14 is held.
  • a hopper 14 In the hopper 14 18 debris can be transferred by means of a covered by a housing 16 sweeping roller, such as dirt, leaves and stones.
  • a housing 16 sweeping roller, such as dirt, leaves and stones.
  • From the frame 12 is oriented obliquely to the vertical upward from a push bar 20 which is releasably connectable to the frame 12, and in its rear region on the frame 12, two wheels 22, 24 are mounted, which are rotatable about a common axle 26.
  • the wheels 22, 24 are on a known per se and therefore to achieve a better overview in the drawing, not shown drive train with the arranged between the two wheels 22, 24 sweeping roller 18 in rotary connection such that a rotational movement of the wheels 22, 24 on the Sweeping roller 18 is transferred.
  • the sweeping roller 18 has a plurality of sweeping bristles 28, by means of which a bottom surface 30 to be cleaned can be swept.
  • a bottom surface 30 to be cleaned can be swept.
  • wear of the sweeping bristles 28 is inevitable.
  • the Broom 18 at an in FIG.
  • cross member 44 is centrally from a relative to the pivot axis 36 radially aligned pivot arm 46 which is rigidly connected to the cross member 44 and an elongated passage opening 48 of the housing 16 passes through and projects with a free end portion 50 via the housing 16.
  • the free end portion 50 of the pivot arm 46 is surrounded by a handle 54, which is held in the longitudinal direction of the pivot arm 46 slidably on the free end portion 50 on its free end of the pivot arm 46 releasably connected by means of a connecting screw.
  • the handle 54 has a sleeve 56 which surrounds the free end portion 50 of the pivot arm 46 in the circumferential direction and is connected in the amount of the stop element 52 integrally with a transverse handle portion 58.
  • the grip part 58 is configured in the shape of a trough and receives the transverse stop element 52.
  • the handle 54 is thus configured a total of T-shaped.
  • the sleeve 56 In its handle portion 58 facing end portion, the sleeve 56 has a receptacle 60 in which a helical compression spring 62nd is arranged, which surrounds the outer end portion of the free end portion 50 of the pivot arm 46 in the circumferential direction and is clamped between the stop member 52 and a bottom wall of the receptacle 60.
  • the compression spring 62 By means of the compression spring 62, the sleeve 56 is resiliently biased in the direction of the housing 16.
  • the housing 16 is formed in the region of the passage opening 48 with respect to the pivot axis 36 arcuate and has on both sides of the elongated passage opening 48 locking elements in the form of locking knobs 64 which cooperate with corresponding locking elements in the form of locking recesses 66 which in the housing 16 facing end face of the sleeve 56 are formed.
  • the height adjustment device 32 can be pivoted about the pivot axis 36 by means of the pivot arm 46.
  • the pivot arm 46 can then be locked again to the housing 16 by the handle 54 is transferred from its spaced apart from the housing 16 release position in its resting directly on the housing 16 detent position in which he kept reliable under the action of the compression spring 62 becomes.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Refuse-Collection Vehicles (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

Sweeping machine comprises a housing (16), a sweepings container, and a sweeping roller (18) covered by the housing and rotatably mounted on a height-adjusting device (32). The height-adjusting device can be pivoted by an adjusting mechanism about a pivot axis (36) running parallel to the axis of rotation (40). The adjusting mechanism has a pivot arm (46) that protrudes out of the housing and can be locked in different positions about the pivot axis. Preferred Features: The end region (50) of the pivot arm protruding out of the housing is provided with a handle (54) that is held on the pivot arm so that it can be displaced between a lock-in position, in which the pivot arm is locked, and a release position, in which the pivot arm can be pivoted.

Description

Die Erfindung betrifft eine Kehrmaschine mit den Merkmalen des Oberbegriffes von Patentanspruch 1,The invention relates to a sweeper with the features of the preamble of claim 1,

Mittels derartiger Kehrmaschinen kann eine Bodenfläche, beispielsweise ein Parkplatz oder eine Hallenfläche, gekehrt werden, wobei das Kehrgut mittels der drehbaren Kehrwalze in den Kehrgutbehälter überführt wird. Die Kehrwalze weist eine Vielzahl von Borsten auf, und bei häufigem Einsatz der Kehrmaschine auf rauhen Bodenflächen kann es zu einer Abnutzung der Borsten kommen, so daß die Lage der Kehrwalze zu der zu reinigenden Bodenfläche nachgestellt werden muß. Hierzu wird in der EP 0 157 925 B1 eine Höhenverstelleinrichtung vorgeschlagen, an der die Kehrwalze drehbar gelagert ist und die mittels zweier Stellschrauben in ihrer Lage bezüglich der Bodenfläche eingestellt werden kann. Eine ähnlich ausgestaltete Höhenverstelleinrichtung, deren Lage ebenfalls mittels einer Stellschraube eingestellt werden kann, ist aus der DE 87 17 834 U1 bekannt. Der Einsatz von Stellschrauben erfordert in den meisten Fällen die Zuhilfenahme von zusätzlichem Werkzeug, um die Kehrwalze in ihrer Lage verändern zu können, da die Stellschrauben meist fest sitzen und deshalb von Hand nicht ohne weiteres gelöst werden können. Außerdem sind zu einer Lageänderung der Kehrwalze meist mehrere Umdrehungen der Stellschrauben erforderlich, dies führt zu einer umständlichen Handhabung. Nachteilig ist darüber hinaus, daß der Benutzer anhand der Stellschrauben die tatsächliche Stellung der Kehrwalze nur schlecht erkennen kann, so daß eine zusätzliche Anzeigevorrichtung erforderlich ist, um die Lage der Kehrwalze für den Benutzer erkennbar zu machen.By means of such sweeping machines, a floor area, for example a parking space or a hall area, can be swept, wherein the sweeping material is transferred by means of the rotatable sweeping roller in the hopper. The sweeping roller has a plurality of bristles, and frequent use of the sweeper on rough ground surfaces can lead to wear of the bristles, so that the position of the sweeping roller must be readjusted to the ground surface to be cleaned. This is in the EP 0 157 925 B1 proposed a height adjustment device on which the sweeping roller is rotatably mounted and which can be adjusted by means of two screws in position relative to the bottom surface. A similarly configured height adjustment device whose position can also be adjusted by means of a set screw, is from the DE 87 17 834 U1 known. The use of screws requires in most cases the use of additional tools to change the broom in position, since the screws usually sit tight and therefore can not be solved by hand easily. In addition, a change in position of the sweeping roller usually several revolutions of the screws are required, this leads to a cumbersome handling. Another disadvantage is that the user can only poorly recognize the actual position of the sweeping roller based on the screws, so that an additional display device is required to make the position of the sweeping roller for the user recognizable.

Aus der DE 94 03 681 U1 ist eine Kehrmaschine der eingangs genannten Art bekannt, bei der die Höhenverstelleinrichtung mit einer konstruktiv aufwendigen Verstellmechanik zusammenwirkt, die eine aus dem Gehäuse der Kehrmaschine herausragende Drehscheibe mit Griffmulden aufweist, an der drehfest ein Exzenter gehalten ist, der wiederum mit einem zweiarmigen Hebel der Höhenverstelleinrichtung zusammenwirkt. Hierzu weist der Exzenter außenseitig mehrere Rastvertiefungen auf, in die eine Rastnase des zweiarmigen Hebels einrasten kann. Um sicherzustellen, daß die Höhenverstelleinrichtung eine von der Drehscheibe vorgegebene Stellung beibehält, ist der zweiarmige Hebel mittels einer Feder in Richtung der Rastvertiefungen des Exzenters elastisch vorgespannt. Zur Höhenverstellung muß der Benutzer zum Verdrehen der Drehscheibe die elastische Vorspannkraft überwinden, wobei ungünstige Hebelverhältnisse vorliegen, so daß zur Höhenverstellung der Kehrwalze ein nicht unerheblicher Kraftaufwand erforderlich sein kannFrom the DE 94 03 681 U1 is a sweeper of the type mentioned, in which the height adjustment cooperates with a structurally complex adjustment mechanism, which has a protruding from the housing of the sweeper turntable with recessed grips, is rotatably held on an eccentric, which in turn cooperates with a two-armed lever height adjustment , For this purpose, the eccentric on the outside on several locking recesses into which a detent of the two-armed lever can engage. To ensure that the height adjustment maintains a predetermined position of the turntable, the two-armed lever is resiliently biased by a spring in the direction of the locking recesses of the eccentric. To adjust the height of the user must overcome the elastic biasing force to rotate the turntable, with unfavorable leverage, so that the height adjustment of the sweeping roller a considerable amount of force may be required

Aus der australischen Druckschrift AU 533 030 B2 ist eine Kehrmaschine bekannt, bei der eine Kehrwalze an zwei verschwenkbaren Tragarmen drehbar gehalten ist. Zur Höhenverstellung der Kehrwalze kann diese mittels eines Gestells angehoben werden, das ebenfalls verschwenkbar gelagert ist.From the Australian publication AU 533 030 B2 a sweeper is known in which a sweeping roller is rotatably supported on two pivotable support arms. To adjust the height of the sweeping roller it can be lifted by means of a frame which is also mounted pivotably.

Aus der Offenlegungsschrift DE 36 29 746 A1 ist eine Kehrmaschine bekannt mit einem Gehäuse, einem Kehrgutbehälter und einer vom Gehäuse überdeckten Kehrwalze, die an einer Höhenverstelleinrichtung um eine Drehachse drehbar gelagert ist. Die Höhenverstelleinrichtung umfaßt zwei Tragarme in Form von Wangen, an denen die Kehrwalze drehbar gelagert ist. Mittels einer Verstellmechanik ist die Höhenverstelleinrichtung um eine parallel zur Drehachse der Kehrwalze ausgerichtete Schwenkachse verschwenkbar. Die Verstellmechanik weist einen um die Schwenkachse verschwenkbaren Schwenkhebel auf, der sich im Zuge einer Verschwenkbewegung entlang eines Seitenteils des Gehäuses bewegt.From the publication DE 36 29 746 A1 a sweeper is known with a housing, a hopper and a sweeping roller covered by the housing, which is rotatably mounted on a height adjustment device about a rotation axis. The height adjustment device comprises two support arms in the form of cheeks on which the sweeping roller is rotatably mounted. By means of an adjusting mechanism, the height adjustment device is pivotable about a pivot axis aligned parallel to the axis of rotation of the sweeping roller. The adjusting mechanism has a pivotable about the pivot axis Swivel lever, which moves in the course of a pivoting movement along a side part of the housing.

Aufgabe der vorliegenden Erfindung ist es, eine gattungsgemäße Kehrmaschine derart weiterzubilden, daß die Lage der Kehrwalze mit verhältnismäßig geringem Kraftaufwand verändert werden kann, wobei die Kehrmaschine einen konstruktiv einfachen Aufbau aufweist.Object of the present invention is to develop a generic sweeper such that the position of the sweeping roller can be changed with relatively little effort, the sweeper having a structurally simple structure.

Diese Aufgabe wird bei einer Kehrmaschine der eingangs genannten Art erfindungsgemäß dadurch gelöst, daß die Tragarme, an denen die Kehrwalze verdrehbar gelagert ist, über eine Querstrebe starr miteinander verbunden sind, wobei der Schwenkarm an der Querstrebe festgelegt ist und bezogen auf die Schwenkachse in radialer Richtung von der die beiden Tragarme miteinander verbindenden Querstrebe absteht.This object is achieved in a sweeper of the type mentioned in the present invention that the support arms on which the sweeping roller is rotatably mounted, are rigidly connected to each other via a transverse strut, wherein the pivot arm is fixed to the cross member and based on the pivot axis in the radial direction protrudes from the two support arms connecting cross member.

Bei der erfindungsgemäßen Kehrmaschine ist es zur Änderung der Lage der Kehrwalze relativ zu der zu reinigenden Bodenfläche lediglich erforderlich, den Schwenkarm um die Schwenkachse zu verschwenken und in der gewünschten Schwenkstellung zu arretieren, vorzugsweise mit dem Gehäuse zu verrasten. Hierbei ergeben sich durch den radial von der Querstrebe abstehenden Schwenkarm sehr günstige Hebelverhältnisse, so daß eine Lageänderung der Kehrwalze mit einem geringen Kraftaufwand verbunden ist. Die beiden Tragarme und die sie verbindende Querstrebe bilden in Kombination mit dem von der Querstrebe abstehenden Schwenkarm für die Kehrwalze eine gabelförmige Aufhängung aus, die vom Benutzer zur Änderung der Lage der Kehrwalze bezogen auf die Bodenfläche auf einfache Weise verschwenkt werden kann.In the sweeping machine according to the invention, it is necessary to change the position of the sweeping roller relative to the bottom surface to be cleaned only to pivot the pivot arm about the pivot axis and lock in the desired pivot position, preferably to lock with the housing. This results from the radially projecting from the cross brace arm very favorable leverage, so that a change in position of the sweeping roller is connected with a small amount of force. The two support arms and connecting them cross strut in combination with the projecting from the cross arm pivot arm for the sweeping roller from a fork-shaped suspension, which can be pivoted by the user to change the position of the sweeping roller relative to the bottom surface in a simple manner.

Von Vorteil ist es, wenn an dem aus dem Gehäuse herausragenden Endbereich des Schwenkarms ein Handgriff angeordnet ist, der zwischen einer Raststellung, in der der Schwenkarm arretiert ist, und einer Freigabestellung, in der der Schwenkarm verschwenkbar ist, hin und her bewegbar am Schwenkarm gehalten ist. Soll die Lage der Kehrwalze verändert werden, so kann hierzu der Handgriff aus seiner Raststellung in seine Freigabestellung bewegt werden und anschließend kann der Schwenkarm in die gewünschte Schwenkstellung verschwenkt und dann wieder mittels des Handgriffs arretiert werden, vorzugsweise mit dem Gehäuse verrastet werden.It is advantageous if a handle is disposed on the protruding from the housing end portion of the pivot arm, which is held between a detent position in which the pivot arm is locked, and a release position in which the pivot arm is pivotable, reciprocally movable on the pivot arm is. If the position of the sweeping roller to be changed, so this can be moved from its locking position to its release position of the handle and then the pivot arm can be pivoted to the desired pivot position and then locked again by means of the handle, preferably locked to the housing.

Der Übergang zwischen der Raststellung und der Freigabestellung des Handgriffs kann beispielsweise durch Drehung des Handgriffs erfolgen. Eine konstruktiv besonders einfache Ausgestaltung der Kehrmaschine kann dadurch erzielt werden, daß der Handgriff in Längsrichtung des Schwenkarms hin und her verschiebbar ist. Zum Lösen des Handgriffs aus seiner Raststellung kann beispielsweise vorgesehen sein, daß der Handgriff vom Benutzer in Richtung der Schwenkachse gedrückt wird. Eine besonders einfache Handhabung kann dadurch erzielt werden, daß der Übergang des Handgriffs von seiner Raststellung in seine Freigabestellung durch Abheben des Handgriffs vom Gehäuse erfolgt. Der Benutzer muß bei einer derartigen Ausführungsform den Handgriff lediglich etwas nach außen ziehen und kann dann den Schwenkarm in eine neue Schwenkstellung überführen.The transition between the detent position and the release position of the handle can be done for example by rotation of the handle. A structurally particularly simple embodiment of the sweeper can be achieved in that the handle in the longitudinal direction of the pivot arm is displaced back and forth. To release the handle from its rest position, for example, be provided that the handle is pressed by the user in the direction of the pivot axis. A particularly simple handling can be achieved in that the transition of the handle from its detent position to its release position by lifting the handle from the housing. The user must in such an embodiment, the handle only slightly pull outward and then can transfer the pivot arm in a new pivot position.

Von Vorteil ist es, wenn der Handgriff in seine Raststellung elastisch vorgespannt ist, denn dadurch wird eine unbeabsichtigte Verstellung des Schwenkarms zuverlässig vermieden.It is advantageous if the handle is resiliently biased in its rest position, as this unintentional adjustment of the pivot arm is reliably avoided.

Vorzugsweise sind am Gehäuse Rastelemente, beispielsweise Rastnoppen oder Rastvertiefungen, angeordnet, die mit korrespondierenden Rastelementen des Handgriffs zusammenwirken. Hierbei ist es günstig, wenn die Rastelemente, mit denen der Handgriff in Eingriff bringbar ist, außenseitig am Gehäuse angeordnet sind. Beispielsweise kann vorgesehen sein, daß der Handgriff auf seiner dem Gehäuse zugewandten Unterseite Rastaufnahmen aufweist, in die außenseitig am Gehäuse angeordnete Rastnoppen eingreifen.Preferably, latching elements, for example latching nubs or latching depressions, are arranged on the housing and are arranged with corresponding latching elements of the latching elements Handle together. It is advantageous if the locking elements, with which the handle is engageable, are arranged on the outside of the housing. For example, it can be provided that the handle on its housing-facing underside has locking receptacles, engage in the outside of the housing arranged locking nubs.

Bei einer bevorzugten Ausführungsform der erfindungsgemäßen Kehrmaschine weist der Handgriff eine den aus dem Gehäuse herausragenden Endbereich des Schwenkarms umgebende Hülse auf, die mittels eines Federelements in Richtung der Rastelemente des Gehäuses elastisch vorgespannt ist. Die Hülse ist in Längsrichtung des Schwenkarms verschiebbar an diesem gehalten und kann entgegen der Wirkung des Federelements aus einer Raststellung, in der sie an den Rastelementen des Gehäuses anliegt, in eine Freigabestellung, in der sie im Abstand zu den am Gehäuse angeordneten Rastelementen positioniert ist, überführt werden.In a preferred embodiment of the sweeping machine according to the invention, the handle has a housing surrounding the end region of the pivot arm surrounding sleeve, which is resiliently biased by a spring element in the direction of the locking elements of the housing. The sleeve is held displaceably in the longitudinal direction of the pivot arm and, contrary to the action of the spring element, can move from a detent position in which it bears against the detent elements of the housing into a release position in which it is positioned at a distance from the detent elements arranged on the housing. be transferred.

Die Freigabestellung des Handgriffs wird bei einer vorteilhaften Ausführungsform der Erfindung durch ein Anschlagelement vorgegeben, das an dem aus dem Gehäuse herausragenden Ende des Schwenkarms angeordnet ist. Das Anschlagelement kann hierbei einen Gegenhalter ausbilden für den Benutzer beim Betätigen des Handgriffs. Dies ist vor allem bei leichtgängigen, handgeschobenen Kehrmaschinen von Vorteil, die mit geringer Kraft verschoben werden können. Günstig ist es hierbei, wenn das Federelement zwischen dem Anschlag und der Hülse eingespannt ist.The release position of the handle is predetermined in an advantageous embodiment of the invention by a stop element, which is arranged on the protruding from the housing end of the pivot arm. The stop element can in this case form a counter holder for the user when operating the handle. This is particularly advantageous in light-weight, hand-pushed sweepers that can be moved with little force. It is favorable in this case if the spring element is clamped between the stop and the sleeve.

Das Federelement kann als den Schwenkarm umgebende Schraubenfeder ausgestaltet sein. Mittels der Schraubenfeder kann die Hülse mit einer Druckkraft in Richtung auf das Gehäuse der Kehrmaschine beaufschlagt werden.The spring element can be configured as a coil spring surrounding the pivoting arm. By means of the coil spring, the sleeve can be acted upon with a compressive force in the direction of the housing of the sweeper.

Vorzugsweise umgibt die Hülse die Schraubenfeder in Umfangsrichtung. Die Hülse bildet somit einen mechanischen Schutz für die Schraubenfeder.Preferably, the sleeve surrounds the coil spring in the circumferential direction. The sleeve thus forms a mechanical protection for the coil spring.

Vorzugsweise weist die Kehrmaschine zwei Laufräder sowie zumindest ein Stützrad auf, wobei die Laufräder um eine gemeinsame Radachse verdrehbar sind und wobei die Schwenkachse der Höhenverstelleinrichtung koaxial zur Radachse ausgerichtet ist. Die Laufräder können über einen Antriebsstrang mit der Kehrwalze gekoppelt sein, so daß die Drehbewegung der Laufräder auf die Kehrwalze übertragen wird. Die Ausrichtung der Schwenkachse der Höhenverstelleinrichtung koaxial zur Radachse der Laufräder hat den Vorteil, daß bei einer Schwenkbewegung der Höhenverstelleinrichtung der Antriebsstrang zwischen den Laufrädern und der Kehrwalze nicht nachjustiert werden muß,Preferably, the sweeper has two wheels and at least one support wheel, wherein the wheels are rotatable about a common axle and wherein the pivot axis of the height adjustment device is aligned coaxially to the wheel axle. The wheels may be coupled via a drive train with the sweeping roller, so that the rotational movement of the wheels is transmitted to the sweeping roller. The orientation of the pivot axis of the height adjustment coaxial with the wheel axle of the wheels has the advantage that during a pivoting movement of the height adjustment of the drive train between the wheels and the sweeping roller does not need to be readjusted

Wie eingangs erwähnt, übergreift das Gehäuse die Kehrwalze. Hierbei kann eine besonders einfache Bedienung der Kehrmaschine zur Lageänderung der Kehrwalze dadurch erzielt werden, daß das Gehäuse in einem die Kehrwalze überdeckenden Bereich bezogen auf die Schwenkachse kreisbogenförmig geformt ist, denn dies hat den Vorteil, daß bei einem Verschwenken des Schwenkarms der Abstand, den der Handgriff zum Gehäuse aufweist, unverändert bleibt.As mentioned above, the housing engages over the sweeping roller. Here, a particularly simple operation of the sweeper for changing the position of the sweeping roller can be achieved in that the housing in a sweeping roller overlapping region based on the pivot axis is arc-shaped, because this has the advantage that when pivoting the pivot arm of the distance, the Handle to the housing, remains unchanged.

Die nachfolgende Beschreibung einer bevorzugten Ausführungsform der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen:

Figur 1:
eine perspektivische Darstellung einer erfindungsgemäßen Kehrmaschine; und
Figur 2:
eine schematische Darstellung einer Höhenverstelleinrichtung der Kehrmaschine.
The following description of a preferred embodiment of the invention serves in conjunction with the drawings for further explanation. Show it:
FIG. 1:
a perspective view of a sweeping machine according to the invention; and
FIG. 2:
a schematic representation of a height adjustment of the sweeper.

In Figur 1 ist schematisch eine Kehrmaschine 10 dargestellt mit einem Rahmen 12, an dem ein Kehrgutbehälter 14 gehalten ist. In den Kehrgutbehälter 14 kann mittels einer von einem Gehäuse 16 überdeckten Kehrwalze 18 Kehrgut überführt werden, beispielsweise Schmutz, Laub und Steine. Vom Rahmen 12 steht schräg zur Vertikalen nach oben ausgerichtet ein Schubbügel 20 ab, der mit dem Rahmen 12 lösbar verbindbar ist, und in seinem rückwärtigen Bereich sind am Rahmen 12 zwei Laufräder 22, 24 gelagert, die um eine gemeinsame Radachse 26 verdrehbar sind. Die Laufräder 22, 24 stehen über einen an sich bekannten und daher zur Erzielung einer besseren Übersicht in der Zeichnung nicht dargestellten Antriebsstrang mit der zwischen den beiden Laufrädern 22, 24 angeordneten Kehrwalze 18 in Drehverbindung dergestalt, daß eine Drehbewegung der Laufräder 22, 24 auf die Kehrwalze 18 übertragen wird.In FIG. 1 schematically a sweeper 10 is shown with a frame 12 to which a hopper 14 is held. In the hopper 14 18 debris can be transferred by means of a covered by a housing 16 sweeping roller, such as dirt, leaves and stones. From the frame 12 is oriented obliquely to the vertical upward from a push bar 20 which is releasably connectable to the frame 12, and in its rear region on the frame 12, two wheels 22, 24 are mounted, which are rotatable about a common axle 26. The wheels 22, 24 are on a known per se and therefore to achieve a better overview in the drawing, not shown drive train with the arranged between the two wheels 22, 24 sweeping roller 18 in rotary connection such that a rotational movement of the wheels 22, 24 on the Sweeping roller 18 is transferred.

Die Kehrwalze 18 weist eine Vielzahl von Kehrborsten 28 auf, mit deren Hilfe eine zu reinigende Bodenfläche 30 gekehrt werden kann. Insbesondere bei der Reinigung von rauhen Bodenflächen 30 ist eine Abnutzung der Kehrborsten 28 unvermeidlich. Bei der erfindungsgemäßen Kehrmaschine 10 ist daher die Kehrwalze 18 an einer in Figur 2 schematisch dargesteiiten Höhenversteiieinrichtung 32 drehbar gelagert, die an jeder Stirnseite der zylinderförmigen Kehrwalze 18 einen Tragarm 34 aufweist, der um eine koaxial zur Radachse 26 ausgerichtete Schwenkachse 36 verschwenkbar am Rahmen 12 gehalten ist und an einem freien Endbereich eines ersten Hebelarms 38 die Kehrwalze 18 um eine Drehachse 40 drehbar lagert, während das freie Ende eines zweiten Hebelarms 42 des Tragarms 34 über eine parallel zur Schwenkachse 36 ausgerichtete Querstrebe 44 mit dem an der anderen Stirnseite der Kehrwalze 18 angeordneten Tragarm starr verbunden ist. Von der Querstrebe 44 steht mittig ein bezogen auf die Schwenkachse 36 radial ausgerichteter Schwenkarm 46 ab, der starr mit der Querstrebe 44 verbunden ist und eine längliche Durchgangsöffnung 48 des Gehäuses 16 durchgreift und mit einem freien Endbereich 50 über das Gehäuse 16 übersteht.The sweeping roller 18 has a plurality of sweeping bristles 28, by means of which a bottom surface 30 to be cleaned can be swept. In particular, when cleaning rough floor surfaces 30, wear of the sweeping bristles 28 is inevitable. In the sweeping machine 10 according to the invention is therefore the Broom 18 at an in FIG. 2 schematically stiffened Höhenversteiieinrichtung 32 rotatably mounted on each end face of the cylindrical sweeping roller 18 has a support arm 34 which is pivotally mounted about a coaxially aligned to the wheel axle 26 pivot axis 36 on the frame 12 and at a free end portion of a first lever arm 38, the sweeping roller 18 to a Rotary shaft 40 rotatably supports, while the free end of a second lever arm 42 of the support arm 34 is rigidly connected via a parallel to the pivot axis 36 aligned transverse strut 44 with the disposed on the other end face of the sweeping roller 18 support arm. Of the cross member 44 is centrally from a relative to the pivot axis 36 radially aligned pivot arm 46 which is rigidly connected to the cross member 44 and an elongated passage opening 48 of the housing 16 passes through and projects with a free end portion 50 via the housing 16.

Auf seinem freien Ende trägt der Schwenkarm 46 ein mittels einer Verbindungsschraube lösbar mit diesem verbundenes querstehendes Anschlagelement 52. Der freie Endbereich 50 des Schwenkarms 46 ist von einem Handgriff 54 umgeben, der in Längsrichtung des Schwenkarms 46 verschiebbar am freien Endbereich 50 gehalten ist.The free end portion 50 of the pivot arm 46 is surrounded by a handle 54, which is held in the longitudinal direction of the pivot arm 46 slidably on the free end portion 50 on its free end of the pivot arm 46 releasably connected by means of a connecting screw.

Der Handgriff 54 weist eine Hülse 56 auf, die den freien Endbereich 50 des Schwenkarms 46 in Umfangsrichtung umgibt und in Höhe des Anschlagelements 52 einstückig mit einem querstehenden Griffteil 58 verbunden ist. Das Griffteil 58 ist wannenförmig ausgestaltet und nimmt das querstehende Anschlagelement 52 auf. Der Handgriff 54 ist somit insgesamt T-förmig ausgestaltet. In ihrem dem Griffteil 58 zugewandten Endbereich weist die Hülse 56 eine Aufnahme 60 auf, in der eine schraubenförmige Druckfeder 62 angeordnet ist, die den außenstehenden Endabschnitt des freien Endbereichs 50 des Schwenkarms 46 in Umfangsrichtung umgibt und zwischen dem Anschlagelement 52 und einer Bodenwand der Aufnahme 60 eingespannt ist. Mittels der Druckfeder 62 wird die Hülse 56 elastisch in Richtung des Gehäuses 16 vorgespannt.The handle 54 has a sleeve 56 which surrounds the free end portion 50 of the pivot arm 46 in the circumferential direction and is connected in the amount of the stop element 52 integrally with a transverse handle portion 58. The grip part 58 is configured in the shape of a trough and receives the transverse stop element 52. The handle 54 is thus configured a total of T-shaped. In its handle portion 58 facing end portion, the sleeve 56 has a receptacle 60 in which a helical compression spring 62nd is arranged, which surrounds the outer end portion of the free end portion 50 of the pivot arm 46 in the circumferential direction and is clamped between the stop member 52 and a bottom wall of the receptacle 60. By means of the compression spring 62, the sleeve 56 is resiliently biased in the direction of the housing 16.

Das Gehäuse 16 ist im Bereich der Durchgangsöffnung 48 bezogen auf die Schwenkachse 36 kreisbogenförmig geformt und weist zu beiden Seiten der länglichen Durchgangsöffnung 48 Rastelemente in Form von Rastnoppen 64 auf, die mit korrespondierenden Rastelementen in Form von Rastaufnahmen 66 zusammenwirken, welche in die dem Gehäuse 16 zugewandte Stirnseite der Hülse 56 eingeformt sind.The housing 16 is formed in the region of the passage opening 48 with respect to the pivot axis 36 arcuate and has on both sides of the elongated passage opening 48 locking elements in the form of locking knobs 64 which cooperate with corresponding locking elements in the form of locking recesses 66 which in the housing 16 facing end face of the sleeve 56 are formed.

Soll die Lage der Kehrwalze 18 bezüglich der zu reinigenden Bodenfläche 30 verändert werden, so ist es hierzu lediglich erforderlich, den Handgriff 54 entgegen der Federkraft der Druckfeder 62 so weit nach außen zu ziehen, daß die Rastaufnahmen 66 die zugeordneten Rastnoppen 64 freigeben. Anschließend kann die Höhenverstelleinrichtung 32 mittels des Schwenkarms 46 um die Schwenkachse 36 verschwenkt werden. In einer gewünschten Schwenkstellung kann der Schwenkarm 46 anschließend wieder mit dem Gehäuse 16 verrastet werden, indem der Handgriff 54 aus seiner zum Gehäuse 16 beabstandeten Freigabestellung in seine unmittelbar am Gehäuse 16 anliegende Raststellung überführt wird, in der er unter der Wirkung der Druckfeder 62 zuverlässig gehalten wird.If the position of the sweeping roller 18 is to be changed with respect to the bottom surface 30 to be cleaned, then it is only necessary to pull the handle 54 against the spring force of the compression spring 62 so far outward that the locking receptacles 66 release the associated locking knobs 64. Subsequently, the height adjustment device 32 can be pivoted about the pivot axis 36 by means of the pivot arm 46. In a desired pivot position, the pivot arm 46 can then be locked again to the housing 16 by the handle 54 is transferred from its spaced apart from the housing 16 release position in its resting directly on the housing 16 detent position in which he kept reliable under the action of the compression spring 62 becomes.

Claims (11)

  1. A sweeper comprising a housing (16), a sweepings container (14) and a sweeping roller (18) covered by the housing (16), which sweeping roller is mounted on a height-adjusting device (32) for rotation about an axis of rotation (40), the height-adjusting device (32) being pivotable by means of an adjusting mechanism about a pivot axis (36) oriented parallel to the axis of rotation (40), the adjusting mechanism having a pivot arm (46), pivotable about the pivot axis (36), which projects out of the housing (16) and may be releasably locked in different pivot positions, and the height-adjusting device (32) comprising two supporting arms (34), pivotable about the pivot axis (36), on which supporting arms the sweeping roller (18) is rotatably mounted, characterised in that the supporting arms (34) are rigidly connected to one another via a cross-member (44), the pivot arm (46) being fixed to the cross-member (44) and extending from the cross-member (44) in the radial direction with respect to the pivot axis (36).
  2. A sweeper according to Claim 1, characterised in that a handle (54) is arranged on the end region (50) of the pivot arm (46) projecting out of the housing (16), which handle is held on the pivot arm (46) so as to be movable back and forth between a locked-in position, in which the pivot arm (46) is locked in place, and a release position, in which the pivot arm (46) is able to pivot.
  3. A sweeper according to Claim 2, characterised in that the handle (54) is displaceable back and forth in the longitudinal direction of the pivot arm (46).
  4. A sweeper according to Claim 2 or 3, characterised in that the handle (54) is resiliently prestressed into its locked-in position.
  5. A sweeper according to Claim 2, 3 or 4, characterised in that detent elements (64) are arranged on the housing (16), which detent elements cooperate with corresponding detent elements (66) of the handle (54).
  6. A sweeper according to Claim 5, characterised in that the detent elements (64) with which the handle (54) may be brought into engagement are arranged on the outside of the housing (16).
  7. A sweeper according to Claim 6, characterised in that the handle (54) has a sleeve (56) surrounding the end region (50) of the pivot arm (46) projecting out of the housing (16), which sleeve is resiliently prestressed by means of a spring element (62) in the direction of the detent elements (64) of the housing (16).
  8. A sweeper according to Claim 7, characterised in that the pivot arm (46) carries a stop element (52) on its end projecting out of the housing (16) and the spring element (62) is clamped between the stop element (52) and the sleeve (56).
  9. A sweeper according to Claim 7 or 8, characterised in that the spring element is designed as a helical spring (62) surrounding the pivot arm (46).
  10. A sweeper according to Claim 9, characterised in that the sleeve (56) surrounds the helical spring (62) in the circumferential direction.
  11. A sweeper according to one of the preceding claims, characterised in that the housing (16) in a region covering the sweeping roller (18) is shaped so as to be circular arc-shaped with respect to the pivot axis (36).
EP04026985A 2003-11-14 2004-11-12 Sweeper Active EP1531202B1 (en)

Applications Claiming Priority (2)

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DE10354520 2003-11-14
DE10354520A DE10354520A1 (en) 2003-11-14 2003-11-14 sweeper

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EP1531202A2 EP1531202A2 (en) 2005-05-18
EP1531202A3 EP1531202A3 (en) 2006-02-01
EP1531202B1 true EP1531202B1 (en) 2008-03-05

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DE (2) DE10354520A1 (en)
DK (1) DK1531202T3 (en)

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US8640294B2 (en) 2008-03-24 2014-02-04 Agri-Fab, Inc. Lawn sweeper assembly with adjustable brush assembly and hopper assembly and method of use thereof
CN105648952A (en) * 2016-03-01 2016-06-08 孙明焕 Road surface cleaning machine
WO2024083591A1 (en) 2022-10-21 2024-04-25 Alfred Kärcher SE & Co. KG Sweeping machine with storage surface
WO2024083611A1 (en) 2022-10-21 2024-04-25 Alfred Kärcher SE & Co. KG Sweeping machine with height adjustment device

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DE102006039700A1 (en) 2006-08-21 2008-02-28 Alfred Kärcher Gmbh & Co. Kg Hand-operated sweeper
DE102007021655B3 (en) * 2007-05-04 2008-09-25 Alfred Kärcher Gmbh & Co. Kg Mobile sweeper
DE102007025765A1 (en) * 2007-05-23 2008-11-27 Alfred Kärcher Gmbh & Co. Kg sweeper
US8393039B2 (en) 2008-03-24 2013-03-12 Agri-Fab, Inc. Lawn sweeper assembly with tilt-able hopper and latch assembly and method of use thereof
CN102661060A (en) * 2012-05-02 2012-09-12 梁海铭 Combined roller automatic sweeping and lifting garbage collecting mechanism with anti-winding structure
CN102677914A (en) * 2012-05-12 2012-09-19 梁海铭 Anti-twisting composite rolling broom automatic sweeping and lifting garbage-collecting mechanism
EP2850988A1 (en) 2013-09-23 2015-03-25 Sprintus GmbH Road sweeper
DE202013012345U1 (en) 2013-09-23 2016-06-02 Sprintus Gmbh sweeper
CN103711093B (en) * 2014-01-13 2015-10-28 益阳赫山链条制造有限公司 A kind of clearing apparatus
CN114606893A (en) * 2022-03-15 2022-06-10 湖州师范学院 Campus motor sweeper

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Publication number Priority date Publication date Assignee Title
US8640294B2 (en) 2008-03-24 2014-02-04 Agri-Fab, Inc. Lawn sweeper assembly with adjustable brush assembly and hopper assembly and method of use thereof
CN105648952A (en) * 2016-03-01 2016-06-08 孙明焕 Road surface cleaning machine
WO2024083591A1 (en) 2022-10-21 2024-04-25 Alfred Kärcher SE & Co. KG Sweeping machine with storage surface
WO2024083611A1 (en) 2022-10-21 2024-04-25 Alfred Kärcher SE & Co. KG Sweeping machine with height adjustment device
DE102022127925A1 (en) 2022-10-21 2024-05-02 Alfred Kärcher SE & Co. KG Sweeper with height adjustment device
DE102022127953A1 (en) 2022-10-21 2024-05-02 Alfred Kärcher SE & Co. KG Sweeper with storage area

Also Published As

Publication number Publication date
EP1531202A3 (en) 2006-02-01
DE10354520A1 (en) 2005-06-23
DK1531202T3 (en) 2008-04-07
EP1531202A2 (en) 2005-05-18
ATE388276T1 (en) 2008-03-15
DE502004006395D1 (en) 2008-04-17

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