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EP0050801B1 - Foldable mop frame - Google Patents

Foldable mop frame Download PDF

Info

Publication number
EP0050801B1
EP0050801B1 EP81108349A EP81108349A EP0050801B1 EP 0050801 B1 EP0050801 B1 EP 0050801B1 EP 81108349 A EP81108349 A EP 81108349A EP 81108349 A EP81108349 A EP 81108349A EP 0050801 B1 EP0050801 B1 EP 0050801B1
Authority
EP
European Patent Office
Prior art keywords
bearing shaft
stirrup
shaped
bearings
wiper frame
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.)
Expired
Application number
EP81108349A
Other languages
German (de)
French (fr)
Other versions
EP0050801A1 (en
Inventor
Roland Schunter
Bernfried Scheller
Rudolf Dupré
Ferdinand Hesse
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Priority to AT81108349T priority Critical patent/ATE6733T1/en
Publication of EP0050801A1 publication Critical patent/EP0050801A1/en
Application granted granted Critical
Publication of EP0050801B1 publication Critical patent/EP0050801B1/en
Expired legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/20Mops
    • A47L13/24Frames for mops; Mop heads
    • A47L13/25Wire frames
    • A47L13/253Wire frames of adjustable or foldable type

Definitions

  • the invention relates to a wiper frame of a floor wiper with bow-shaped frame parts to be inserted into the end pockets of an interchangeable cover, one of which is equipped with a gimbal-mounted handle sleeve in the plane of a bearing shaft which is gimbally fastened to a bearing shaft which runs on a pivotable about the longitudinal axis of the frame and is held in at least two bearings connected to the frame part fixed support plate and the other to fold to the bearings of the bearing shaft offset by 90 °, attached to the support plate and to be locked in the extended position pivoted into the plane of the support plate with the aid of a locking device.
  • DE-A-2704417 discloses a cleaning device with an end pocket for the entry of the end sections of an interchangeable cover having a cross member arranged on a handle.
  • the crossmember consists of two crossmember parts to be displaced relative to one another to reduce the end spacing, the position of use of which is to be locked by a locking member which can be rotated with the handle.
  • the telescopic displacement of the two cross member parts relative to one another resulting from the rotational movement of the handle requires a relatively complex mechanism which cannot ensure that a used cover can be deposited without the intervention of one hand.
  • the locking device consists of an extension arm of the frame part to be swung out in the slot of the device in the slot of the fixed frame part and an extension element to be pushed between the fixed frame part and the extension arm in the extended position , latch tongue pivotally mounted on the fixed frame part.
  • Locking and unlocking can be done with this wiper frame only by operating the locking device.
  • the locking device is to be operated with the foot so that the interchangeable cover - especially after use - does not have to be touched by hand when detaching from the wiper frame.
  • the foot-operated locking device can only be released when the device is placed on the floor, it is somewhat difficult to throw a used mop cover into a waste container after the lock has been released using the unlocked wiper frame.
  • the invention has for its object to design the wiping frame of the type mentioned so that the locking and unlocking of the foldable frame part in the extended position of the device without additional rocker arm by actuating the handle so that accidental loosening is not expected in normal handling is.
  • the solution according to the invention is characterized by a bracket which is coupled to the bearing shaft and has a substantially semicircular receptacle which is offset by approximately 90 ° to the longitudinal axis of the bearing shaft for a free leg of the bracket to be folded, which is to be defined in the extended position with the bracket, approximately parallel to the longitudinal axis Frame part.
  • the bracket thus forms, together with the free leg, the locking device to be actuated according to the invention directly by pivoting (ie not rotating) the handle inserted into the handle sleeve.
  • the bracket itself can be a metal arc connected to the bearing shaft in a cohesive manner, for example by welding.
  • a possibly more cost-effective version of the bracket that is more suitable for series production consists of a molded part, preferably made of plastic, with an approximately semicircular recess or groove offset by approximately 90 ° to the longitudinal axis for inserting and receiving the free leg. The molded part then has an opening for attaching to the bearing shaft, which is secured against rotation; in contrast to the integral connection, a positive or non-positive connection is provided here.
  • the invention is based on the fact that the handle during handling of the device practically only in the area of the right angle spanned back and forth or up and down between the vertical with respect to the floor or the support plate and the horizontal parallel to the support plate is pivoted. So if the arrangement is made so that the bracket only by pivoting the handle in the remaining right angle of its freedom of movement with the leg of the foldable frame part to be locked in engagement or out To be brought into engagement, is achieved by the invention that the locking or unlocking of the wiper frame can be effected by a simple pivoting movement of the wiper handle in an angular range not used in normal handling. Accordingly, since the typical movement sequence when using the device is taken into account and utilized for the locking function, the wiper frame according to the invention does not require any special rocker arm or the like which increases the outlay and may make handling more difficult.
  • the device according to the invention is particularly easy to handle if the bearing shaft in the area between two terminal bearings is approximately S-shaped with a center piece of the S-shape running perpendicular to the longitudinal direction of the frame, and if the semicircular bracket is swiveled by means of the handle sleeve the handle attached to the center piece is to be locked or unlocked around the longitudinal axis of the bearing shaft with the free leg of the frame part to be folded.
  • the bracket can, in particular in the area between the two end bearings, be molded or coupled to the bearing shaft.
  • the bracket which is preferably in the form of a molded plastic part, is in particular attached to a part of the S-shaped center piece which runs obliquely with respect to the longitudinal axis.
  • a correspondingly obliquely shaped slot of the shaped bracket there is a positive or non-positive connection that excludes a relative rotation of the bracket and bearing shaft.
  • the arrangement is also simple if the bracket itself is formed from an extension piece of the shaft extending beyond a terminal bearing of the bearing shaft. Because of the better fit, the clip-on bracket is usually cheaper for series production.
  • a locking device or locking device integrated in the gimbal handle holder which, in addition to the leg of the frame part to be folded, which is to be locked, consists only of a bracket attached to the longitudinal bearing shaft of the gimbal handle suspension. If here and in the following a brief mention is made of a (clip-on) plastic bracket, this indicates the difference from the bow-shaped bracket (to be attached with a material fit), which will probably always consist of metal.
  • the clip on the other hand can - as I said - made of other solid materials than plastic, e.g. B. made of metal.
  • the wiper frame - preferably made of stainless steel or galvanized sheet steel carrier plate 1, the longitudinal edges 2 of which should be bent semi-tubular on the underside.
  • the latter bend serves on the one hand to increase the stability of the plate 1 and on the other hand to accommodate the fixed frame part 3, which is designed, for example, as a bracket.
  • the bow ends of the fixed frame part 3 can be fixed within the semi-tubular bend at the edges 2 of the carrier plate 1 or can be resilient in the longitudinal direction of the plate.
  • the pivotable frame part 5 consisting of a flap bracket 5 is also fixed in bearings 4.
  • the cardanic holder of the stem sleeve 7, designated overall by 6, is pivotally arranged in bearings 8 in the center.
  • the dashed longitudinal axis 9 of the S-shaped bearing shaft 10 of the gimbal bracket 6 runs parallel to the direction of the width of the frame and perpendicular to the dashed bearing axis 11 of the bearing 4 of the frame part 5 to be pivoted.
  • the bearing shaft 10 is in the area between its terminal bearings 8 bent approximately S-shaped so that a perpendicular to the longitudinal axis 9 center piece 12 is formed as a bearing shaft of the stem sleeve 7.
  • bracket 15 Firmly connected to the S-shaped bearing shaft 10 in the exemplary embodiment is a semicircular bracket 15 which is offset by 90 ° to the longitudinal axis 9 of the bearing shaft 10.
  • This bracket 15 can either be attached to or molded onto the area between the two bearings 8 of the bearing shaft 10 or can be formed from an extension piece 19 of the shaft extending beyond a terminal bearing 8 according to FIG. 6 of the extended bearing shaft 10.
  • the bracket 15 represents one element of the lock 15 according to the invention.
  • the other element of the lock is formed by an extended, free one Leg 16 (or 20 according to FIG. 6) of the foldable frame part 5.
  • the free leg 16 or 20 is bent back after the bearing 4 approximately within the plane of the frame part 5 by 90 ° and projects either in the extended position of the wiper frame 1 to 5 in a central recess 17 of the carrier plate 1 or according to FIG. 6 on the side of the foldable bracket 15 by, for example, 2 cm beyond the carrier plate 1.
  • the longitudinal end 18 of the free leg 16 can be lifted somewhat out of the plane of the folding bracket or frame part 5 in the direction of the bearing axis 9, such that the arch of the bracket 15 engaging under the longitudinal end 18 is not appreciably on the underside of the frame via the carrier plate 1 projects down.
  • FIG. 3 shows the state of the locking, in which the bracket 15 engages under the longitudinal end 18 of the free leg 16 of the frame part 5 to be folded
  • FIG. 4 shows how the handle sleeve 7 is pivoted by approximately 180 ° with respect to FIG the longitudinal axis 9 of the bracket 15 comes out of engagement with the free leg 16.
  • the foldable frame part 5 is then - with the frame raised - by gravity from the system on the support plate 1 according to FIG. 5 and swings down about its bearing 4.
  • an arched bracket 15 which is integrally formed on the bearing shaft 10, in particular is made of steel or stainless steel and is welded on. 7 and 8, in which the same parts as in the previous figures are referred to, a more cost-effective version which is suitable for series production can be achieved with a form bracket 21, preferably made of plastic, to be clipped on.
  • This bracket 21, offset by 90 ° to the longitudinal axis 9, can be firmly and non-rotatably coupled to the S-shaped central part 12 of the bearing shaft 10 by simply plugging it on.
  • the semicircular, in particular formed as a groove 22, recess of the molded part can receive the free leg 16 of the foldable frame part 5 similar to the molded metal bracket 15.
  • the groove 22 has an inlet opening 23 which corresponds to the longitudinal end of the metal bracket 15.
  • the attachable bracket 21 should preferably consist of plastic because of the manufacturing effort.
  • the molded part according to the invention has a slip-on slot 24 which is to be designed in particular in such a way that a positive and non-rotatable connection to the bearing shaft 10 can be established by plugging on the bracket 21.
  • the hygienically perfect, clean cover provided with terminal pockets can be touched by hand on the unlocked wiper frame, for example folded to an angle of 20 to 30 °, as shown in FIG. 5.
  • the handle 14 is pivoted according to the preceding explanations to the lowest possible level in the angular range in which the wiper is not used in normal handling.
  • the folded-down frame part 5 is folded parallel to the carrier plate 1 after the cover has been pushed onto the bearing.
  • the free, bent back leg 16 of the foldable frame part 5 enters through the central recess 17 of the carrier plate 1 or according to FIG. 6 in the middle next to the carrier plate 1 into a position in which the longitudinal end 18 of the free leg 16 is removed from the bracket 15 (FIG. 1 to 5) or in the groove 22 (FIG. 7).
  • the stem 14 held in the S-shaped bearing shaft 10 only needs to be pivoted by approximately 180 ° and the bracket located on the bearing shaft 10 detects the free leg 16.
  • the device can be held by the handle, rotated through 180 ° using a container provided for storage, and then lifted. Since during this movement the bracket according to the invention releases the free, bent-back leg 16 (FIG. 4 or 8), the foldable frame part 5 pivots due to the force of gravity and the cover falls off by itself.
  • the device according to the invention is therefore u. a. especially for hospital cleaning, because the staff no longer comes into contact with the used and possibly bacterially contaminated covers. It is particularly advantageous that the mop cover can be loosened only by pivoting the handle and can therefore be easily inserted into a storage container when loosening.
  • the bow-shaped frame parts 3 and 5 according to the invention can be bent semicircularly at the longitudinal ends approximately according to FIG. 1 or can be provided with rounded ends according to FIG. 6.
  • rollers not shown, can be placed on the end parts of the brackets which are transverse to the longitudinal axis 9 and which facilitate insertion into the mop cover.
  • the two frame parts 3 and 5 expediently consist of approximately 6 mm thick round steel.

Landscapes

  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)

Description

Die Erfindung betrifft einen Wischrahmen eines Fußbodenwischers mit in die endseitigen Taschen eines Wechselbezugs einzusteckenden bügelförmigen Rahmenteilen, von denen das eine in der Ebene einer mit einer auf einer schwenkbar um die Rahmenlängsachse verlaufenden, in wenigstens zwei mit dem Rahmenteil verbundenen Lagern gehaltenen Lagerwelle kardanisch befestigten Stielhülse ausgerüsteten festen Trägerplatte festgelegt und das andere um zu den Lagern der Lagerwelle um 90° versetzte, auf der Trägerplatte befestigte Lager zu klappen und in der in die Ebene der Trägerplatte geschwenkten Streckstellung mit Hilfe einer Sperrvorrichtung zu arretieren ist.The invention relates to a wiper frame of a floor wiper with bow-shaped frame parts to be inserted into the end pockets of an interchangeable cover, one of which is equipped with a gimbal-mounted handle sleeve in the plane of a bearing shaft which is gimbally fastened to a bearing shaft which runs on a pivotable about the longitudinal axis of the frame and is held in at least two bearings connected to the frame part fixed support plate and the other to fold to the bearings of the bearing shaft offset by 90 °, attached to the support plate and to be locked in the extended position pivoted into the plane of the support plate with the aid of a locking device.

Ein Reinigungsgerät mit einem endseitige Taschen zum Eintritt der Endabschnitte eines an einem Stiel angeordneten Querträgers aufweisenden auswechselbaren Bezug ist aus der DE-A-2704417 bekannt. Der Querträger besteht dabei aus zwei zur Verringerung des Endabstandes gegeneinander zu verlagernden Querträger-Teilen, deren Gebrauchsstellung durch ein mit dem Stiel drehbares Sperrglied zu verriegeln ist. Die dabei aus der Drehbewegung des Stiels resultierende Teleskopverschiebung der beiden Querträger-Teile zueinander bedingt eine relativ aufwendige Mechanik, die ein problemloses Ablegen eines gebrauchten Bezugs ohne den Eingriff einer Hand nicht gewährleisten kann.DE-A-2704417 discloses a cleaning device with an end pocket for the entry of the end sections of an interchangeable cover having a cross member arranged on a handle. The crossmember consists of two crossmember parts to be displaced relative to one another to reduce the end spacing, the position of use of which is to be locked by a locking member which can be rotated with the handle. The telescopic displacement of the two cross member parts relative to one another resulting from the rotational movement of the handle requires a relatively complex mechanism which cannot ensure that a used cover can be deposited without the intervention of one hand.

Ein weiterer Fußbodenwischer, dessen mit einer schwenkbar gelagerten Stielhülse ausgerüsteter Wischrahmen mit einem nach unten zu klappenden Schenkel und mit der Arretierung dieses Schenkels dienenden Riegelorganen zu versehen ist, wird in der DE-A-25 51 678 beschrieben. Im Bekannten erfolgt das Entriegeln und Verriegeln der beiden in Taschen des Wischbezugs zu steckenden Rahmenteile durch eine Drehung des Stiels mit Hilfe einer an das Stielende angelenkten Riegelplatte. Da die Arretierung beim Handhaben des Geräts leicht durch unabsichtliches Drehen des Stiels (um dessen Lagerachse) zu entriegeln ist, wird im Bekannten dem Wischrahmen ein schwenkbar gelagerter federbelasteter Kipphebel zugeordnet, welcher die Riegelplatte in der Riegelstellung gegen unbeabsichtigtes Verdrehen sichert. Diese zusätzliche Sicherung bedingt einen erheblichen Herstellungsaufwand und erschwert die Handhabung, weil beim Verriegeln und Entriegeln bestimmte Hand- und Fußbetätigungen in vorgegebener Reihenfolge erforderlich sind, bei deren Nichtbeachtung Schäden an der Mechanik auftreten können.Another floor wiper, the wiping frame of which is equipped with a pivotably mounted handle sleeve and which is to be provided with a leg which can be folded down and with the locking elements of this leg, is described in DE-A-25 51 678. In the known, the unlocking and locking of the two frame parts to be inserted into pockets of the mop cover is carried out by rotating the handle with the aid of a locking plate articulated on the handle end. Since the locking mechanism can be easily unlocked by unintentionally turning the handle (around its bearing axis), the swivel frame is associated with a pivoted spring-loaded rocker arm, which secures the locking plate in the locking position against unintentional rotation. This additional security requires a considerable manufacturing effort and complicates handling, because when locking and unlocking certain hand and foot operations are required in a predetermined order, failure to do so may damage the mechanics.

Bei einem in der EP-A-0 017 208 beschriebenen Wischrahmen eines Fußbodenwischers besteht die Sperrvorrichtung aus einem in der Streckstellung des Geräts in einem Schlitz des festen Rahmenteils einzuschwenkenden Ausleger des herauszuklappenden Rahmenteils und einer in der Streckstellung zwischen das feste Rahmenteil und den Ausleger zu schiebenden, am festen Rahmenteil schwenkbar gelagerten Riegelzunge.In a wiper frame of a floor wiper described in EP-A-0 017 208, the locking device consists of an extension arm of the frame part to be swung out in the slot of the device in the slot of the fixed frame part and an extension element to be pushed between the fixed frame part and the extension arm in the extended position , latch tongue pivotally mounted on the fixed frame part.

Das Verriegeln und Entriegeln kann bei diesem Wischerrahmen allein durch Betätigen der Sperrvorrichtung erfolgen. Die Sperrvorrichtung ist mit dem Fuß zu betätigen, so daß der Wechselbezug - vor allem nach Gebrauch - beim Lösen von dem Wischrahmen nicht mit der Hand berührt werden muß. Da das Lösen der fußbetätigten Arretierung nur bei Auflage des Gerätes auf dem Boden erfolgen kann, bereitet es jedoch eine gewisse Schwierigkeit, einen gebrauchten Wischbezug nach dem Lösen der Verriegelung mit Hilfe des entriegelten Wischrahmens in einen Abfallbehälter zu werfen.Locking and unlocking can be done with this wiper frame only by operating the locking device. The locking device is to be operated with the foot so that the interchangeable cover - especially after use - does not have to be touched by hand when detaching from the wiper frame. However, since the foot-operated locking device can only be released when the device is placed on the floor, it is somewhat difficult to throw a used mop cover into a waste container after the lock has been released using the unlocked wiper frame.

Der Erfindung liegt die Aufgabe zugrunde, den Wischrahmen eingangs genannter Art so auszubilden, daß das Verriegeln und Entriegeln des klappbaren Rahmenteils in der Streckstellung des Gerätes ohne zusätzliche Kipphebel allein durch Betätigen des Stiels so erfolgen kann, daß ein zufälliges Lösen bei normaler Handhabung nicht zu erwarten ist.The invention has for its object to design the wiping frame of the type mentioned so that the locking and unlocking of the foldable frame part in the extended position of the device without additional rocker arm by actuating the handle so that accidental loosening is not expected in normal handling is.

Die erfindungsgemäße Lösung ist gekennzeichnet durch einen mit der Lagerwelle gekoppelten Bügel mit im wesentlichen halbkreisförmiger, um etwa 90° zur Längsachse der Lagerwelle versetzter Aufnahme für einen in der Streckstellung mit dem Bügel festzulegenden, etwa in der Parallele zu der Längsachse gebogenenen freien Schenkel des zu klappenden Rahmenteils.The solution according to the invention is characterized by a bracket which is coupled to the bearing shaft and has a substantially semicircular receptacle which is offset by approximately 90 ° to the longitudinal axis of the bearing shaft for a free leg of the bracket to be folded, which is to be defined in the extended position with the bracket, approximately parallel to the longitudinal axis Frame part.

Der Bügel bildet also zusammen mit dem freien Schenkel die erfindungsgemäß, unmittelbar durch Schwenken (also nicht Drehen) des in die Stielhülse gesetzten Stiels zu betätigende Sperrvorrichtung. Bei dem Bügel selbst kann es sich um einem stoffschlüssig, zum Beispiel durch Schweißen, mit der Lagerwelle verbundenen Bogen aus Metall handeln. Eine eventuell kostengünstigere und in der Serie paßgerechtere Ausführung des Bügels besteht gemäß weiterer Erfindung aus einem, vorzugsweise aus Kunststoff bestehenden, Formteil mit einer etwa halbkreisförmigen, um etwa 90° zu der Längsachse versetzten Ausnehmung oder Nut zum Einführen und Aufnehmen des freien Schenkels. Das Formteil weist dann eine Öffnung zum gegen Verdrehen gesicherten Aufstecken auf die Lagerwelle auf ; im Gegensatz zu dem stoffschlüssigen Verbinden ist hier also eine form- oder kraftschlüssige Verbindung vorgesehen.The bracket thus forms, together with the free leg, the locking device to be actuated according to the invention directly by pivoting (ie not rotating) the handle inserted into the handle sleeve. The bracket itself can be a metal arc connected to the bearing shaft in a cohesive manner, for example by welding. A possibly more cost-effective version of the bracket that is more suitable for series production, according to another invention, consists of a molded part, preferably made of plastic, with an approximately semicircular recess or groove offset by approximately 90 ° to the longitudinal axis for inserting and receiving the free leg. The molded part then has an opening for attaching to the bearing shaft, which is secured against rotation; in contrast to the integral connection, a positive or non-positive connection is provided here.

Die Erfindung geht davon aus, daß der Stiel beim Handhaben des Geräts praktisch nur in dem Bereich des einen zwischen der Senkrechten in Bezug auf den Fußboden bzw. die Trägerplatte und der parallel zur Trägerplatte verlaufenden Horizontalen aufgespannten rechten Winkels hin und her bzw. auf und ab geschwenkt wird. Wenn also die Anordnung so getroffen wird, daß der Bügel nur durch Schwenken des Stiels in den verbleibenden rechten Winkel seiner Bewegungsfreiheit mit dem zu verriegelnden Schenkel des klappbaren Rahmenteils in Eingriff oder außer Eingriff zu bringen ist, wird durch die Erfindung erreicht, daß das Verriegeln bzw. Entriegeln des Wischrahmens durch eine einfache Schwenkbewegung des Wischerstiels in einen bei dem normalen Handhaben nicht gebrauchten Winkelbereich zu bewirken ist. Da demgemäß für die Funktion der Verriegelung der typische Bewegungsablauf bei der Verwendung des Geräts berücksichtigt und ausgenutzt wird, kommt der erfindungsgemäße Wischrahmen ohne besondere, den Aufwand erhöhende und eventuell die Handhabung erschwerende Kipphebel oder ähnliches aus.The invention is based on the fact that the handle during handling of the device practically only in the area of the right angle spanned back and forth or up and down between the vertical with respect to the floor or the support plate and the horizontal parallel to the support plate is pivoted. So if the arrangement is made so that the bracket only by pivoting the handle in the remaining right angle of its freedom of movement with the leg of the foldable frame part to be locked in engagement or out To be brought into engagement, is achieved by the invention that the locking or unlocking of the wiper frame can be effected by a simple pivoting movement of the wiper handle in an angular range not used in normal handling. Accordingly, since the typical movement sequence when using the device is taken into account and utilized for the locking function, the wiper frame according to the invention does not require any special rocker arm or the like which increases the outlay and may make handling more difficult.

Das erfindungsgemäße Gerät ist besonders einfach zu handhaben, wenn die Lagerwelle im Bereich zwischen zwei endständigen Lagern in etwa S-förmig mit senkrecht zu der Längsrichtung des Rahmens verlaufendem Mittelstück der S-Form gebogen ist und wenn der halbkreisförmige Bügel durch Schwenken des mit Hilfe der Stielhülse am Mittelstück befestigten Stiels um die Längsachse der Lagerwelle mit dem freien Schenkel des zu klappenden Rahmenteils zu arretieren bzw. zu entarretieren ist. Der Bügel kann dabei, insbesondere im Bereich zwischen den beiden endständigen Lagern, an die Lagerwelle angeformt bzw. angekoppelt sein. Im letzteren Falle wird der vorzugsweise als Kunststoff-Formteil augebildete Bügel insbesondere auf einem schräg in Bezug auf die Längsachse verlaufenden Teil des S-förmigen Mittelstücks aufgesteckt. Bei entsprechend schräg geformtem Aufsteckschlitz des Form-Bügels entsteht eine eine Relativdrehung von Bügel und Lagerwelle ausschließende form- oder kraftschlüssige Verbindung. Einfach wird die Anordnung auch, wenn der Bügel aus einem über ein endständiges Lager der Lagerwelle hinausreichenden Verlängerungsstück der Welle selbst geformt wird. Wegen der besseren Paßform ist beim Serienfertigen aber meist der Aufsteckbügel günstiger.The device according to the invention is particularly easy to handle if the bearing shaft in the area between two terminal bearings is approximately S-shaped with a center piece of the S-shape running perpendicular to the longitudinal direction of the frame, and if the semicircular bracket is swiveled by means of the handle sleeve the handle attached to the center piece is to be locked or unlocked around the longitudinal axis of the bearing shaft with the free leg of the frame part to be folded. The bracket can, in particular in the area between the two end bearings, be molded or coupled to the bearing shaft. In the latter case, the bracket, which is preferably in the form of a molded plastic part, is in particular attached to a part of the S-shaped center piece which runs obliquely with respect to the longitudinal axis. With a correspondingly obliquely shaped slot of the shaped bracket, there is a positive or non-positive connection that excludes a relative rotation of the bracket and bearing shaft. The arrangement is also simple if the bracket itself is formed from an extension piece of the shaft extending beyond a terminal bearing of the bearing shaft. Because of the better fit, the clip-on bracket is usually cheaper for series production.

In jedem Falle handelt es sich erfindungsgemäß um eine in die kardanische Stielhalterung integrierte Arretiervorrichtung bzw. Riegelvorrichtung, die zusätzlich zu dem zu arretierenden Schenkel des zu klappenden Rahmenteils lediglich aus einem an die Längs-Lagerwelle der kardanischen Stielaufhängung angesetzten Bügel besteht. Wenn hier und im folgenden kurz von einem (aufsteckbaren) Kunststoff-Bügel die Rede ist so wird damit auf den Unterschied zu dem (stoffschlüssig anzusetzenden) bogenförmigen Bügel, der wohl immer aus Metall bestehen wird, hingewiesen. Der Aufsteckbügel dagegen kann - wie gesagt - auch aus anderen, festen Materialien als Kunststoff, z. B. aus Metall, hergestellt sein.In any case, according to the invention, it is a locking device or locking device integrated in the gimbal handle holder, which, in addition to the leg of the frame part to be folded, which is to be locked, consists only of a bracket attached to the longitudinal bearing shaft of the gimbal handle suspension. If here and in the following a brief mention is made of a (clip-on) plastic bracket, this indicates the difference from the bow-shaped bracket (to be attached with a material fit), which will probably always consist of metal. The clip on the other hand can - as I said - made of other solid materials than plastic, e.g. B. made of metal.

Anhand der schematischen Darstellung von Ausführungsbeispielen werden nähere Einzelheiten der Erfindung erläutert. Es zeigen :

  • Figur 1 eine Ansicht des Wischrahmens von oben ;
  • Figur 2 eine vergrößerte Ansicht der Mechanik des Wischrahmens von unten ;
  • Figur 3 eine vergrößerte Ansicht der Mechanik des Wischrahmens von oben bei geschlossener Verriegelung ;
  • Figur 4 eine vergrößerte Ansicht der Mechanik des Wischrahmens von oben bei geöffneter Verriegelung ;
  • Figur 5 eine Gesamtansicht des aufgeklappten Wischrahmens ;
  • Figur 6 eine Ansicht einer abgewandelten Wischrahmen-Mechanik von oben ;
  • Figur 7 eine Ansicht einer weiteren Wischrahmenausbildung bei geschlossener Arretierung, gesehen von oben ; und
  • Figur 8 die Vorrichtung nach Fig. 7 im geöffneten Zustand.
Based on the schematic representation of exemplary embodiments, further details of the invention are explained. Show it :
  • Figure 1 is a view of the wiper frame from above;
  • Figure 2 is an enlarged view of the mechanics of the wiper frame from below;
  • Figure 3 is an enlarged view of the mechanism of the wiper frame from above with the lock closed;
  • Figure 4 is an enlarged view of the mechanism of the wiper frame from above with the lock open;
  • Figure 5 is an overall view of the opened wiper frame;
  • FIG. 6 shows a view of a modified wiper frame mechanism from above;
  • FIG. 7 shows a view of a further wiper frame design with the locking device closed, viewed from above; and
  • Figure 8 shows the device of FIG. 7 in the open state.

Der Wischrahmen besteht gemäß Fig. 1 und 2 aus einer - wie alle Teile des Wischrahmens - vorzugsweise aus Edelstahl oder verzinktem Stahlblech hergestellten Trägerplatte 1, deren Längskanten 2 an der Unterseite halbröhrenförmig umgebogen sein sollen. Letztere Biegung dient einerseits zum Erhöhen der Stabilität der Platte 1 und andererseits dazu, das, beispielsweise als Bügel ausgebildete, feste Rahmenteil 3 aufzunehmen. Die Bügelenden des festen Rahmenteils 3 können innerhalb der halbröhrenförmigen Biegung an den Kanten 2 der Trägerplatte 1 fest oder auch in der Längsrichtung der Platte federnd gelagert sein. An der Trägerplatte 1 ist außerdem in Lagern 4 das aus einem Klappenbügel bestehende schwenkbare Rahmenteil 5 befestigt.1 and 2 of a - like all parts of the wiper frame - preferably made of stainless steel or galvanized sheet steel carrier plate 1, the longitudinal edges 2 of which should be bent semi-tubular on the underside. The latter bend serves on the one hand to increase the stability of the plate 1 and on the other hand to accommodate the fixed frame part 3, which is designed, for example, as a bracket. The bow ends of the fixed frame part 3 can be fixed within the semi-tubular bend at the edges 2 of the carrier plate 1 or can be resilient in the longitudinal direction of the plate. On the carrier plate 1, the pivotable frame part 5 consisting of a flap bracket 5 is also fixed in bearings 4.

Auf der Oberseite der Trägerplatte 1 (vergleiche auch Fig. 3) ist mittig die insgesamt mit 6 bezeichnete kardanische Halterung der Stielhülse 7 in Lagern 8 schwenkbar angeordnet. Die gestrichelt gezeichnete Längsachse 9 der S-förmig gebogenen Lagerwelle 10 der kardanischen Halterung 6 verläuft parallel zur Richtung der Breitenerstreckung des Rahmens und senkrecht zur gestrichelt angedeuteten Lagerachse 11 der Lager 4 des zu schwenkenden Rahmenteils 5. Der Lagerwelle 10 ist im Bereich zwischen deren endständigen Lagern 8 in etwa S-förmig so umgebogen, daß ein senkrecht zu der Längsachse 9 verlaufendes Mittelstück 12 als Lagerwelle der Stielhülse 7 gebildet wird. Die in der Regel aus Blech bestehende Stielhülse 7 umfaßt das Mittelstück 12 zweckmäßig mit dem röhrenförmig umgebördelten Endstück 13. In das offene Ende der Stielhülse 7 kann ein Stiel 14 eingesetzt werden.On the upper side of the carrier plate 1 (see also FIG. 3), the cardanic holder of the stem sleeve 7, designated overall by 6, is pivotally arranged in bearings 8 in the center. The dashed longitudinal axis 9 of the S-shaped bearing shaft 10 of the gimbal bracket 6 runs parallel to the direction of the width of the frame and perpendicular to the dashed bearing axis 11 of the bearing 4 of the frame part 5 to be pivoted. The bearing shaft 10 is in the area between its terminal bearings 8 bent approximately S-shaped so that a perpendicular to the longitudinal axis 9 center piece 12 is formed as a bearing shaft of the stem sleeve 7. The stem sleeve 7, which is generally made of sheet metal, expediently comprises the middle piece 12 with the tubular flanged end piece 13. A stem 14 can be inserted into the open end of the stem sleeve 7.

Fest mit der S-förmigen Lagerwelle 10 ist im Ausführungsbeispiel ein erfindungsgemäßer, um 90° zur Längsachse 9 der Lagerwelle 10 versetzter halbkreisförmiger Bügel 15 verbunden. Dieser Bügel 15 kann entweder im Bereich zwischen den beiden Lagern 8 der Lagerwelle 10 an diese angesetzt bzw. angeformt sein oder aber aus einem über ein endständiges Lager 8 gemäß Fig. 6 der verlängerten Lagerwelle 10 hinausreichenden Verlängerungsstück 19 der Welle geformt sein. In jedem Fall stellt der Bügel 15 das eine Element der erfindungsgemäßen Verriegelung 15 dar. Das andere Element der Verriegelung wird gebildet durch einen verlängerten, freien Schenkel 16 (oder 20 nach Fig. 6) des klappbaren Rahmenteils 5. Der freie Schenkel 16 bzw. 20 ist im Anschluß an das Lager 4 in etwa innerhalb der Ebene des Rahmenteils 5 um 90° zurückgebogen und ragt in der Streckstellung des Wischrahmens entweder gemäß Fig. 1 bis 5 in eine mittige Aussparung 17 der Trägerplatte 1 oder gemäß Fig. 6 auf der Seite des klappbaren Bügels 15 um zum Beispiel 2 cm über die Trägerplatte 1 hinaus. Das Längsende 18 des freien Schenkels 16 kann etwas aus der Ebene des Klappbügels bzw. Rahmenteils 5 in Richtung auf die Lagerachse 9 herausgehoben sein, derart, daß der unter das Längsende 18 greifende Bogen des Bügels 15 nicht nennenswert auf der Unterseite des Rahmens über die Trägerplatte 1 nach unten vorspringt.Firmly connected to the S-shaped bearing shaft 10 in the exemplary embodiment is a semicircular bracket 15 which is offset by 90 ° to the longitudinal axis 9 of the bearing shaft 10. This bracket 15 can either be attached to or molded onto the area between the two bearings 8 of the bearing shaft 10 or can be formed from an extension piece 19 of the shaft extending beyond a terminal bearing 8 according to FIG. 6 of the extended bearing shaft 10. In any case, the bracket 15 represents one element of the lock 15 according to the invention. The other element of the lock is formed by an extended, free one Leg 16 (or 20 according to FIG. 6) of the foldable frame part 5. The free leg 16 or 20 is bent back after the bearing 4 approximately within the plane of the frame part 5 by 90 ° and projects either in the extended position of the wiper frame 1 to 5 in a central recess 17 of the carrier plate 1 or according to FIG. 6 on the side of the foldable bracket 15 by, for example, 2 cm beyond the carrier plate 1. The longitudinal end 18 of the free leg 16 can be lifted somewhat out of the plane of the folding bracket or frame part 5 in the direction of the bearing axis 9, such that the arch of the bracket 15 engaging under the longitudinal end 18 is not appreciably on the underside of the frame via the carrier plate 1 projects down.

Während Fig. 3 den Zustand der Verriegelung zeigt, bei dem der Bügel 15 unter das Längsende 18 des freien Schenkels 16 des zu klappenden Rahmenteils 5 greift, wird in Fig. 4 dargestellt, wie durch Schwenken der Stielhülse 7 um etwa 180° in Bezug auf die Längsachse 9 der Bügel 15 außer Eingriff mit dem freien Schenkel 16 kommt. Das klappbare Rahmenteil 5 wird dann - bei angehobenem Rahmen - durch die Schwerkraft aus der Anlage an der Trägerplatte 1 gemäß Fig. 5 gelöst und schwenkt um seine Lager 4 nach unten.While FIG. 3 shows the state of the locking, in which the bracket 15 engages under the longitudinal end 18 of the free leg 16 of the frame part 5 to be folded, FIG. 4 shows how the handle sleeve 7 is pivoted by approximately 180 ° with respect to FIG the longitudinal axis 9 of the bracket 15 comes out of engagement with the free leg 16. The foldable frame part 5 is then - with the frame raised - by gravity from the system on the support plate 1 according to FIG. 5 and swings down about its bearing 4.

Bei den Ausführungsbeispielen nach Fig. 1 bis 6 ist ein an die Lagerwelle 10 stoffschlüssig angeformter, insbesondere aus Stahl oder Edelstahl bestehender und angeschweißter, bogenförmiger Bügel 15 vorgesehen. Gemäß Fig. 7 und 8, in denen gleiche Teile wie in den vorhergehenden Figuren bezeichnet werden, läßt sich eine kostengünstigere und in der Serie paßgerechten Ausführung mit einem, vorzugsweise aus Kunststoff bestehenden, aufzusteckenden, Form-Bügel 21 erreichen. Dieser um 90° zur Längsachse 9 versetzte Bügel 21 kann bei geeigneter Formgebung durch einfaches Aufstecken fest und unverdrehbar mit dem S-förmigen Mittelteil 12 der Lagerwelle 10 gekoppelt werden. Die halbkreisförmige, insbesondere als Nut 22 ausgebildete, Aussparung des Formteils kann den freien Schenkel 16 des klappbaren Rahmenteils 5 ähnlich wie der angeformte Metall-Bügel 15 aufnehmen. Die Nut 22 besitzt eine EinlaufÖffnung 23, die dem Längsende des MetallBügels 15 entspricht. Der aufsteckbare Bügel 21 soll wegen des Herstellungsaufwandes vorzugsweise aus Kunststoff bestehen. Außer der Aufnahmeöffnung bzw. Nut 22 besitzt das erfindungsgemäße Formteil einen Aufsteckschlitz 24, der insbesondere so auszubilden ist, daß durch Aufstecken des Bügels 21 eine formschlüssige und verdrehsichere Verbindung mit der Lagerwelle 10 herzustellen ist.In the exemplary embodiments according to FIGS. 1 to 6, an arched bracket 15 is provided which is integrally formed on the bearing shaft 10, in particular is made of steel or stainless steel and is welded on. 7 and 8, in which the same parts as in the previous figures are referred to, a more cost-effective version which is suitable for series production can be achieved with a form bracket 21, preferably made of plastic, to be clipped on. This bracket 21, offset by 90 ° to the longitudinal axis 9, can be firmly and non-rotatably coupled to the S-shaped central part 12 of the bearing shaft 10 by simply plugging it on. The semicircular, in particular formed as a groove 22, recess of the molded part can receive the free leg 16 of the foldable frame part 5 similar to the molded metal bracket 15. The groove 22 has an inlet opening 23 which corresponds to the longitudinal end of the metal bracket 15. The attachable bracket 21 should preferably consist of plastic because of the manufacturing effort. In addition to the receiving opening or groove 22, the molded part according to the invention has a slip-on slot 24 which is to be designed in particular in such a way that a positive and non-rotatable connection to the bearing shaft 10 can be established by plugging on the bracket 21.

Bei Anwendung des Geräts kann der mit endständigen Taschen versehene, hygienisch einwandfreie, saubere Bezug von Hand auf den entarretierten, beispielsweise auf einen Winkel von 20 bis 30° zusammengeklappten Wischrahmen gemäß Fig. 5 gestreift werden. Der Stiel 14 ist dabei entsprechend den vorhergehenden Erläuterungen auf den tiefstmöglichen Stand in dem Winkelbereich geschwenkt, in dem der Wischer bei normaler Handhabung nicht benutzt wird. Das abgeklappte Rahmenteil 5 wird nach dem Aufschieben des Bezugs in die Lager parallel zur Trägerplatte 1 umgelegt. Dabei tritt der freie, zurückgebogene Schenkel 16 des klappbaren Rahmenteils 5 durch die mittige Aussparung 17 der Trägerplatte 1 oder nach Fig. 6 mittig neben der Trägerplatte 1 in eine Lage, in der das Längsende 18 des freien Schenkels 16 von dem Bügel 15 (Fig. 1 bis 5) bzw. in der Nut 22 (Fig. 7) zu erfassen ist. Zum Verriegeln des erfindungsgemäßen Geräts braucht daher der in der S-förmigen Lagerwelle 10 gehaltene Stiel 14 nur um etwa 180° geschwenkt zu werden und der an der Lagerwelle 10 befindliche Bügel erfaßt den freien Schenkel 16.When using the device, the hygienically perfect, clean cover provided with terminal pockets can be touched by hand on the unlocked wiper frame, for example folded to an angle of 20 to 30 °, as shown in FIG. 5. The handle 14 is pivoted according to the preceding explanations to the lowest possible level in the angular range in which the wiper is not used in normal handling. The folded-down frame part 5 is folded parallel to the carrier plate 1 after the cover has been pushed onto the bearing. The free, bent back leg 16 of the foldable frame part 5 enters through the central recess 17 of the carrier plate 1 or according to FIG. 6 in the middle next to the carrier plate 1 into a position in which the longitudinal end 18 of the free leg 16 is removed from the bracket 15 (FIG. 1 to 5) or in the groove 22 (FIG. 7). To lock the device according to the invention, the stem 14 held in the S-shaped bearing shaft 10 only needs to be pivoted by approximately 180 ° and the bracket located on the bearing shaft 10 detects the free leg 16.

Zum Ablegen eines verschmutzten Wischbezugs kann das Gerät am Stiel gehalten über einen zur Ablage vorgesehenen Behälter um ein 180° gedreht und dabei angehoben werden. Da bei dieser Bewegung der erfindungsgemäße Bügel den freien, zurückgebogenen Schenkel 16 wieder freigibt (Fig. 4 oder 8), schwenkt das klappbare Rahmenteil 5 infolge der Schwerkraft auf und der Bezug fällt von allein ab. Das erfindungsgemäße Gerät eignet sich daher u. a. besonders für die Krankenhausreinigung, weil das Personal nicht mehr mit den gebrauchten und eventuell bakteriell kontaminierten Bezügen in Kontakt kommt. Es ist dabei besonders vorteilhaft, daß der Wischbezug allein durch Schwenken des Stiels zu lösen und daher beim Lösen ohne weiteres in einen Ablagebehälter einzubringen ist.To put down a dirty mop cover, the device can be held by the handle, rotated through 180 ° using a container provided for storage, and then lifted. Since during this movement the bracket according to the invention releases the free, bent-back leg 16 (FIG. 4 or 8), the foldable frame part 5 pivots due to the force of gravity and the cover falls off by itself. The device according to the invention is therefore u. a. especially for hospital cleaning, because the staff no longer comes into contact with the used and possibly bacterially contaminated covers. It is particularly advantageous that the mop cover can be loosened only by pivoting the handle and can therefore be easily inserted into a storage container when loosening.

Es ist darauf hinzuweisen, daß die bügelförmigen Rahmenteile 3 und 5 erfindungsgemäß an den Längsenden etwa gemäß Fig. 1 halbkreisförmig gebogen oder gemäß Fig. 6 mit abgerundeten Enden versehen sein kann. In letzterem Fall können auf die quer zur Längsachse 9 stehenden Endteile der Bügel nicht gezeichnete Rollen gesetzt werden, die das Einführen in den Wischbezug erleichtern. Die beiden Rahmenteile 3 und 5 bestehen zweckmäßig aus etwa 6 mm starkem Rundstahl.It should be pointed out that the bow-shaped frame parts 3 and 5 according to the invention can be bent semicircularly at the longitudinal ends approximately according to FIG. 1 or can be provided with rounded ends according to FIG. 6. In the latter case, rollers, not shown, can be placed on the end parts of the brackets which are transverse to the longitudinal axis 9 and which facilitate insertion into the mop cover. The two frame parts 3 and 5 expediently consist of approximately 6 mm thick round steel.

Claims (8)

1. Wiper frame of a floor cleaner with stirrup- shaped frame parts (3, 5), which are to be plugged into the pockets at the end side of a replacement cover and of which the one (3) is located in the plane of a firm carrier plate (1) equipped with a shank sleeve (7), which is cardanically fastened on a bearing shaft (10), which extends pivotably about the longitudinal frame axis (9) and is retained in at least two bearings (8) connected with the frame part (3) and the other (5) is to be tilted about bearings (4), which are fastened on the carrier plate (1) and displaced through 90° to the bearings (8) of the bearing shaft (10), and to be located with the aid of blocking device in extended setting pivoted into the plane of the carrier plate (1), characterised by a stirrup (15, 21) coupled with the bearing shaft (21) and having a substantially semicircularly shaped receptacle, which is displaced through about 90° to the longitudinal axis (9) of the bearing shaft (10), for a free limb (16), which is to be fixed in the extended setting with the stirrup (15, 21) and bent round to be about parallel to the longitudinal axis (9), of the frame part (5) to be tilted.
2. Wiper frame according to claim 1, characterised thereby, that the stirrup (15, 21), particularly in the region between two bearings (8) at the ends, is coupled to or shaped onto the bearing shaft (10).
3. Wiper frame according to claim 1, characterised thereby, that the stirrup (15) is shaped out of a prolongation piece (19) of the shaft reaching beyond a bearing (8) at the end of the bearing shaft (10) (Fig. 6).
4. Wiper frame according to one or more of the claims 1 to 3, characterised thereby, that an arcuate stirrup (15), connected integrally with the bearing shaft (10), of metal is provided (Figs. 1 to 6).
5. Wiper frame according to claim 1 or 2, characterised thereby, that the stirrup (21) is constructed as moulded part, particularly of synthetic material, with a recess or groove (22), which encircles the longitudinal axis (10) in about semicircular shape, for the introduction and reception of the free limb (16) or its longitudinal end and displays an opening constructed as plug-on slot (24) for the shape-locking or force-locking placement secured againts rotation onto the bearing shaft (10).
6. Wiper frame according to one or more of the claims 1 to 5, characterised thereby, that the bearing shaft (10) in the region between two bearings (8) at the ends is bent about S-shaped with the middle piece (12) of the S-shape extending perpendicularly to the longitudinal direction (9) and that the stirrup (15, 21) is to be latched with or unlatched from the free limb (16) of the frame part (5) to be tilted through pivotation of the shank (14), which is fastened to the middle piece (12) with the aid of the shank sleeve (7), around the longitudinal axis (9) of the bearing shaft (10).
7. Wiper frame according to claim 5 and 6, characterised thereby, that the stirrup (21), constructed as moulded part to be plugged on, is to be plugged on shape-lockingly or force-lockingly onto a part of the S-shaped middle piece (12) extending obliquely with respect to the longitudinal axis (9).
8. Wiper frame according to claim 7, characterised thereby, that the stirrup (21), constructed as moulded part to be plugged on, possesses an obliquely shaped plug-on slot (24) adapted to the plug-on region of the S-shaped middle part (12).
EP81108349A 1980-10-23 1981-10-15 Foldable mop frame Expired EP0050801B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108349T ATE6733T1 (en) 1980-10-23 1981-10-15 FOLDABLE WIPER FRAME OF A FLOOR Mop.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3039938 1980-10-23
DE3039938 1980-10-23
DE3109390 1981-03-12
DE3109390 1981-03-12

Publications (2)

Publication Number Publication Date
EP0050801A1 EP0050801A1 (en) 1982-05-05
EP0050801B1 true EP0050801B1 (en) 1984-03-21

Family

ID=25788657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108349A Expired EP0050801B1 (en) 1980-10-23 1981-10-15 Foldable mop frame

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EP (1) EP0050801B1 (en)
DE (1) DE3162822D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237432A1 (en) * 1992-11-06 1994-05-11 Hans Raab Cleaning device, especially for floors
DE4410294A1 (en) * 1994-03-25 1995-02-23 Hans Raab Stretching frame of a cleaning implement
CN202875265U (en) 2012-10-11 2013-04-17 3M中国有限公司 Foldable rotatable flat mop and cleaning tool assembly including the same
CN106725120B (en) * 2016-12-13 2019-03-08 戴志刚 A kind of clearing apparatus of domestic portable
CN106805847B (en) * 2016-12-16 2019-03-05 戴志刚 A kind of mobile device for indoor gap deashing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1420639A (en) * 1920-12-08 1922-06-27 Save A Handle Products Co Mop head and fastener therefor
DE2551678C3 (en) * 1975-11-18 1978-12-07 Nwg Nord-West Gebaeudereinigung Gmbh & Co Kg, 4100 Duisburg Floor wiper
DE2914230A1 (en) * 1979-04-09 1980-10-23 Henkel Kgaa WIPER FRAME OF A FLOOR WIPER

Also Published As

Publication number Publication date
DE3162822D1 (en) 1984-04-26
EP0050801A1 (en) 1982-05-05

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