EP0606302B1 - High-pressure cleaning equipment - Google Patents

High-pressure cleaning equipment Download PDF

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Publication number
EP0606302B1
EP0606302B1 EP92920374A EP92920374A EP0606302B1 EP 0606302 B1 EP0606302 B1 EP 0606302B1 EP 92920374 A EP92920374 A EP 92920374A EP 92920374 A EP92920374 A EP 92920374A EP 0606302 B1 EP0606302 B1 EP 0606302B1
Authority
EP
European Patent Office
Prior art keywords
housing
spray gun
spray
connecting means
pressure cleaning
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 - Lifetime
Application number
EP92920374A
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German (de)
French (fr)
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EP0606302A1 (en
Inventor
Josef Schneider
Robert Nathan
Wolfgang Nieuwkamp
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 date
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Publication of EP0606302A1 publication Critical patent/EP0606302A1/en
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Publication of EP0606302B1 publication Critical patent/EP0606302B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material

Definitions

  • the invention relates to a high-pressure cleaning device with a housing, with a liquid pump arranged in the housing, with a motor likewise enclosed by the housing for driving the liquid pump, with a spray gun comprising a jet pipe and an actuating handle, with a hose connecting the liquid pump with the spray gun and with connecting means for detachable attachment of the spray gun to the housing.
  • a high-pressure cleaning device known from US-A-4,972,994 can be operated in two ways, namely on the one hand as a stationary device, the housing with the device parts enclosed by it being stationary, e.g. B. arranged on the ground and the spray gun connected via a hose to the liquid pump is grasped by hand on its actuating handle and directed to the areas to be cleaned.
  • the jet pipe can also be connected directly to the housing and the liquid pump, the housing then being gripped by a special handle provided for this purpose and the unit consisting of the jet pipe and housing being directed at the points to be cleaned.
  • the gun with its hose is detached from the housing and a separate jet pipe must be connected to the latter.
  • the special handle provided on the upper side of the housing often does not allow the liquid spray jet emerging from the jet pipe to be specifically aligned with the area to be cleaned.
  • a high-pressure cleaning device is also known from DE-U-8,815,807, which has clamping brackets on its upper side for receiving the spray gun.
  • clamping brackets on its upper side for receiving the spray gun.
  • These are simple bearing shells, in which projecting clamping cams ensure a secure clamping fit for the injected spraying devices.
  • this is not so powerful that the device could be carried on the spray gun, so a separate handle is provided for the device.
  • the connecting means connect the housing to the spray gun in such a way that it can rotate freely about the longitudinal axis of the spray gun in such a way that when the unit consisting of the housing and the spray gun is handled by manual detection of the spray gun, the housing always hangs down.
  • the spray gun thus remains permanently connected to the housing with its hose, but the unit consisting of the housing and the gun can be grasped on the actuating handle of the gun and, in the same way as the gun alone, can be precisely aligned with the areas to be cleaned.
  • the high-pressure cleaning device shown in FIGS. 1 and 2 comprises a housing 1 which encloses a conventional high-pressure liquid pump 2.
  • the pump 2 is driven by an electric motor 3.
  • a flexible hose 4 extends from the pump 2 and is connected to a spray gun 5.
  • the spray gun 5 in turn comprises in a conventional manner a jet pipe 6 with a spray nozzle 7 and an actuating handle 8 into which the hose 4 opens.
  • the actuating handle 8 comprises, in a manner known per se, a (not shown) manually operated switch for switching on and off a high-pressure spray jet emerging from the nozzle 7.
  • the gun 5 is gripped manually on the actuating handle 8 and aligned with its nozzle to the point to be cleaned.
  • the housing 1 with the components enclosed by it is parked stationary on the ground, while the spray gun 5, which is only connected to the housing via the flexible hose 4, is aimed freely at the point to be cleaned.
  • the radius of action is of course limited by the length of the hose 4.
  • the spray gun 5 can be detachably rigidly attached to the housing using connecting means according to the invention (still to be described) 1 can be attached.
  • the spray gun 5 and the housing 1 form a fixed unit which can be gripped manually on the actuating handle 8 and aligned with the points to be cleaned.
  • the operator carries the entire unit with him and is no longer limited in its radius of action by the length of the hose 4.
  • the handling is preferably carried out in such a way that the unit with one hand, for. B. the right hand, is detected on the operating handle 8, while the other hand engages a handle 9 provided for this purpose on the jet pipe 6.
  • a handle (not shown) projecting downwards or laterally (not shown) could also be provided rigidly on the housing 1.
  • the connecting means for the detachable fastening of the spray gun 5 to the housing 1 in the illustrated embodiment comprise two annular tabs 11 which are fixedly connected to the housing 1 and which are open on one side.
  • a rotary member 12 is rotatably arranged, which has a radially extending, relatively wide slot 13. This slot 13 is aligned in Figure 2 by appropriate rotation of the rotary member so that it is closed by the tab 11 at its opening. This is the normal operating position of the rotary member 12.
  • the spray gun 5 and the housing 1 are connected to the unit shown in FIG. 1 in the manner described, this unit can be handled essentially like the spray gun alone, since the unit, like the spray gun 5 alone, can be handled by the operating handle 8 and optionally detected on the handle 9.
  • the relatively heavy housing 1 with the components enclosed by it swings freely because of the rotatable connection described about the axis of the spray gun 5.
  • the oscillating attachment of the housing 1 to the spray gun 5 ensures that the housing 1 always hangs down, so that the cooling air suction slots 10 provided on the housing 1 are always below the spray gun 5.
  • two corresponding ring members could also be rotatably arranged directly on the spray gun 5. These rotatable ring members are in a known manner directly with the Locked housing, so that you also get a rotatable connection between spray gun 5 and housing 1 again.
  • the connecting means between the spray gun 5 and the housing 1 each comprise two tabs or ring members. Basically, it is sufficient to provide only a single tab or a single ring member, which in this case can then be made axially correspondingly longer, for example in the form of a bushing.
  • splash protection elements in the form of foam mats are provided between it and the housing, which are denoted in FIGS. 1 and 2 by reference numerals 14 and 15, respectively.
  • These splash protection mats allow cooling air to enter and exit for the electric motor 3, but prevent the ingress of moisture.
  • a labyrinth-like air duct can be provided in the housing 1 in order to prevent water drops from entering live parts of the electric motor 3.
  • the housing 1 of the high-pressure cleaning device 1 is advantageously designed as a plastic injection-molded part, a film hinge preferably being formed at the point indicated by the arrow 16 in FIG. 2, and the housing 1 can thus be produced in one piece from two half-shells.
  • the unit consisting of the housing 1 and the spray gun 5 can also be connected to a carrying strap 17, which allows an operator to carry the unit hanging over the shoulder.
  • the weight of the unit is absorbed by the shoulder and the operator needs e.g. B. to grasp the operating handle 8 with only one hand in order to draw the spray jet towards the point to be cleaned.
  • the carrying strap 17, which can be attached to the tabs 11, for example by means of eyelets, furthermore has a carrying handle 18 connecting the two parts of the carrying strap 17, which is made of the same flexible material as the carrying strap 17 and on which the mentioned unit is gripped and worn can be.
  • FIGS. 3 and 4 differs from that according to FIGS. 1 and 2 only in that a conventional (not visible) internal combustion engine is arranged in the housing 1 instead of the electric motor 3. Otherwise, the device according to FIGS. 3 and 4 corresponds in terms of its construction and function to the embodiment according to FIGS. 1 and 2.
  • the tabs 11 attached spray gun 5 provide vibration damping means that prevent the inevitable vibrations emanating from the internal combustion engine on the spray gun and thus on the hands of an operator holding this spray gun.
  • vibration damping elements are known per se and therefore do not need to be described in detail here.
  • elastic members for example a rubber buffer or the like, between the tabs 11 and the housing 1.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Nozzles (AREA)

Abstract

The high-pressure cleaning equipment proposed comprises a housing (1), a liquid pump (2) disposed inside the housing (1), a motor (3), also enclosed in the housing (1), which drives the pump (2), a spray-gun assembly (5) consisting of a nozzle pipe (6) and control handle (8), and a hose (4) connecting the pump (2) to the spray-gun assembly (5). Connection means (11, 12, 13) are provided to permit the spray-gun assembly (5) to be detachably attached to the housing (1) in such a way that the unit consisting of the spray-gun assembly (5) and housing (1) can be operated by holding the control handle (8) in the hand.

Description

Die Erfindung betrifft ein Hochdruck-Reinigungsgerät mit einem Gehäuse, mit einer im Gehäuse angeordneten Flüssigkeitspumpe, mit einem ebenfalls vom Gehäuse umschlossenen Motor zum Antreiben der Flüssigkeitspumpe, mit einer ein Strahlrohr und einen Betätigungsgriff umfassenden Sprühpistole, mit einem die Flüssigkeitspumpe mit der Sprühpistole verbindenden Schlauch und mit Verbindungsmitteln zur lösbaren Befestigung der Sprühpistole am Gehäuse.The invention relates to a high-pressure cleaning device with a housing, with a liquid pump arranged in the housing, with a motor likewise enclosed by the housing for driving the liquid pump, with a spray gun comprising a jet pipe and an actuating handle, with a hose connecting the liquid pump with the spray gun and with connecting means for detachable attachment of the spray gun to the housing.

Ein aus der US-A-4,972,994 bekanntes Hochdruckreinigungsgerät kann auf zweierlei Arten betrieben werden, nämlich einerseits als stationäres Gerät, wobei das Gehäuse mit den von ihm umschlossenen Geräteteilen ortsfest, z. B. auf dem Erdboden angeordnet und die über einen Schlauch an die Flüssigkeitspumpe angeschlossene Sprühpistole an ihrem Betätigungsgriff von Hand erfaßt und auf die zu reinigenden Stellen gerichtet wird. Andererseits kann unter Weglassung des Schlauches das Strahlrohr auch direkt mit dem Gehäuse und der Flüssigkeitspumpe verbunden werden, wobei man dann das Gehäuse an einem dafür vorgesehenen besonderen Griff erfaßt und die aus Strahlrohr und Gehäuse bestehende Einheit auf die zu reinigenden Stellen richtet. Dabei ist es nachteilig, daß bei einem Übergang von der einen zur anderen Betriebsart die Pistole mit ihrem Schlauch von dem Gehäuse gelöst und an letzteres ein gesondertes Strahlrohr angeschlossen werden muß. Außerdem ermöglicht der an der Oberseite des Gehäuses vorgesehene besondere Handgriff häufig kein gezieltes Ausrichten des aus dem Strahlrohr austretenden Flüssigkeitssprühstrahls auf die zu reinigende Stelle.A high-pressure cleaning device known from US-A-4,972,994 can be operated in two ways, namely on the one hand as a stationary device, the housing with the device parts enclosed by it being stationary, e.g. B. arranged on the ground and the spray gun connected via a hose to the liquid pump is grasped by hand on its actuating handle and directed to the areas to be cleaned. On the other hand, with the omission of the hose, the jet pipe can also be connected directly to the housing and the liquid pump, the housing then being gripped by a special handle provided for this purpose and the unit consisting of the jet pipe and housing being directed at the points to be cleaned. It is disadvantageous that in a transition from one to the other mode of operation, the gun with its hose is detached from the housing and a separate jet pipe must be connected to the latter. In addition, the special handle provided on the upper side of the housing often does not allow the liquid spray jet emerging from the jet pipe to be specifically aligned with the area to be cleaned.

Aus der DE-U-8,815,807 ist weiterhin ein Hochdruckreinigungsgerät bekannt, das an seiner Oberseite Klemmhalterungen zur Aufnahme der Sprühpistole aufweist. Es handelt sich dabei um einfache Lagerschalen, in denen durch vorspringende Klemmnocken ein sicherer Klemmsitz für die eingeklemmten Spritzeinrichtungen gewährleistet wird. Dieser ist aber nicht so kräftig, daß das Gerät an der Sprühpistole getragen werden könnte, daher ist ein separater Griff für das Gerät vorgesehen.A high-pressure cleaning device is also known from DE-U-8,815,807, which has clamping brackets on its upper side for receiving the spray gun. These are simple bearing shells, in which projecting clamping cams ensure a secure clamping fit for the injected spraying devices. However, this is not so powerful that the device could be carried on the spray gun, so a separate handle is provided for the device.

Es ist Aufgabe der Erfindung, ein gattungsgemäßes Hochdruckreinigungsgerät so auszugestalten, daß das Hochdruckreinigungsgerät an einer Sprühpistole so getragen werden kann, daß es in jeder Arbeitslage senkrecht nach unten gerichtet transportierbar ist.It is an object of the invention to design a generic high-pressure cleaning device so that the high-pressure cleaning device can be carried on a spray gun in such a way that it can be transported vertically downward in any working position.

Diese Aufgabe wird bei einem Hochdruckreinigungsgerät der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß die Verbindungsmittel das Gehäuse derart um die Längsachse der Sprühpistole frei pendelnd drehbar mit der Sprühpistole verbinden, daß beim Handhaben der Einheit aus Gehäuse und Sprühpistole durch manuelles Erfassen der Sprühpistole das Gehäuse immer nach unten hängt.This object is achieved according to the invention in a high-pressure cleaning device of the type described at the outset in that the connecting means connect the housing to the spray gun in such a way that it can rotate freely about the longitudinal axis of the spray gun in such a way that when the unit consisting of the housing and the spray gun is handled by manual detection of the spray gun, the housing always hangs down.

Dabei bleibt also die Sprühpistole ständig mit ihrem Schlauch an das Gehäuse angeschlossen, die aus dem Gehäuse und der Pistole bestehende Einheit kann jedoch am Betätigungsgriff der Pistole erfaßt und in gleicher Weise wie die Pistole allein präzise auf die zu reinigenden Stellen ausgerichtet werden.The spray gun thus remains permanently connected to the housing with its hose, but the unit consisting of the housing and the gun can be grasped on the actuating handle of the gun and, in the same way as the gun alone, can be precisely aligned with the areas to be cleaned.

Die nachstehende Beschreibung bevorzugter Ausführungsformen der Erfindung dient im Zusammenhang mit beiliegender Zeichnung der weiteren Erläuterung. Es zeigen:

Figur 1
in Seitenansicht ein Hochdruck-Reinigungsgerät mit einem Elektromotor zum Antreiben einer Hochdruckpumpe;
Figur 2
das Gerät aus Figur 1 in Querschnittsansicht;
Figur 3
ein Hochdruck-Reinigungsgerät mit einem Verbrennungsmotor zum Antreiben einer Hochdruckpumpe und
Figur 4
eine Vorderansicht des Geräts aus Figur 3.
The following description of preferred embodiments of the invention serves in conjunction with the accompanying drawings for further explanation. Show it:
Figure 1
in side view a high-pressure cleaning device with an electric motor for driving a high-pressure pump;
Figure 2
the device of Figure 1 in cross-sectional view;
Figure 3
a high-pressure cleaning device with an internal combustion engine for driving a high-pressure pump and
Figure 4
3 shows a front view of the device from FIG. 3.

Das in Figur 1 und 2 dargestellte Hochdruck-Reinigungsgerät umfaßt ein Gehäuse 1, welches eine übliche Flüssigkeits-Hochdruckpumpe 2 umschließt. Die Pumpe 2 wird von einem Elektromotor 3 angetrieben. Von der Pumpe 2 geht ein flexibler Schlauch 4 ab, der mit einer Sprühpistole 5 verbunden ist. Die Sprühpistole 5 umfaßt ihrerseits in herkömmlicher Weise ein Strahlrohr 6 mit Sprühdüse 7 und einen Betätigungsgriff 8, in den der Schlauch 4 einmündet. Der Betätigungsgriff 8 umfaßt in an sich bekannter Weise einen (nicht dargestellten) handbetätigten Schalter zum Ein- und Ausschalten eines aus der Düse 7 austretenden Hochdruck-Sprühstrahls. Die Pistole 5 wird am Betätigungsgriff 8 manuell erfaßt und mit ihrer Düse auf die zu reinigende Stelle hin ausgerichtet. Normalerweise wird das Gehäuse 1 mit den von ihm umschlossenen Bestandteilen stationär am Erdboden abgestellt, während man mit der lediglich über den biegsamen Schlauch 4 mit dem Gehäuse verbundenen Sprühpistole 5 frei beweglich auf die zu reinigende Stelle zielt. Dabei ist der Aktionsradius natürlich durch die Länge des Schlauches 4 begrenzt.The high-pressure cleaning device shown in FIGS. 1 and 2 comprises a housing 1 which encloses a conventional high-pressure liquid pump 2. The pump 2 is driven by an electric motor 3. A flexible hose 4 extends from the pump 2 and is connected to a spray gun 5. The spray gun 5 in turn comprises in a conventional manner a jet pipe 6 with a spray nozzle 7 and an actuating handle 8 into which the hose 4 opens. The actuating handle 8 comprises, in a manner known per se, a (not shown) manually operated switch for switching on and off a high-pressure spray jet emerging from the nozzle 7. The gun 5 is gripped manually on the actuating handle 8 and aligned with its nozzle to the point to be cleaned. Normally, the housing 1 with the components enclosed by it is parked stationary on the ground, while the spray gun 5, which is only connected to the housing via the flexible hose 4, is aimed freely at the point to be cleaned. The radius of action is of course limited by the length of the hose 4.

Wie aus Figur 1 und 2 hervorgeht, kann die Sprühpistole 5 unter Verwendung erfindungsgemäßer (noch zu beschreibender) Verbindungsmittel in lösbarer Weise starr am Gehäuse 1 befestigt werden. Auf diese Weise bilden die Sprühpistole 5 und das Gehäuse 1 eine feste Einheit, die am Betätigungsgriff 8 manuell erfaßt und auf die zu reinigenden Stellen ausgerichtet werden kann. Die Bedienungsperson trägt in diesem Falle also die gesamte Einheit mit sich herum und ist in ihrem Aktionsradius nicht mehr durch die Länge des Schlauches 4 beschränkt. Die Handhabung erfolgt bevorzugt in der Weise, daß die Einheit mit der einen Hand, z. B. der rechten Hand, am Betätigungsgriff 8 erfaßt wird, während die andere Hand an einem hierfür am Strahlrohr 6 vorgesehenen Handgriff 9 angreift. Statt des Handgriffes 9 am Strahlrohr 6 könnte auch ein, beispielsweise nach unten oder seitlich abstehender (nicht dargestellter) Handgriff starr am Gehäuse 1 vorgesehen sein.As can be seen from FIGS. 1 and 2, the spray gun 5 can be detachably rigidly attached to the housing using connecting means according to the invention (still to be described) 1 can be attached. In this way, the spray gun 5 and the housing 1 form a fixed unit which can be gripped manually on the actuating handle 8 and aligned with the points to be cleaned. In this case, the operator carries the entire unit with him and is no longer limited in its radius of action by the length of the hose 4. The handling is preferably carried out in such a way that the unit with one hand, for. B. the right hand, is detected on the operating handle 8, while the other hand engages a handle 9 provided for this purpose on the jet pipe 6. Instead of the handle 9 on the jet pipe 6, a handle (not shown) projecting downwards or laterally (not shown) could also be provided rigidly on the housing 1.

Die Verbindungsmittel zur lösbaren Befestigung der Sprühpistole 5 am Gehäuse 1 umfassen bei der dargestellten Ausführungsform zwei fest mit dem Gehäuse 1 verbundene ringförmige Laschen 11, die nach einer Seite hin offen sind. In den Laschen 11 ist ein Drehglied 12 drehbar angeordnet, das einen radial verlaufenden, relativ breiten Schlitz 13 aufweist. Dieser Schlitz 13 ist in Figur 2 durch entsprechende Verdrehung des Drehgliedes so ausgerichtet, daß er durch die Lasche 11 an seiner Öffnung verschlossen ist. Dies ist die normale Betriebsstellung des Drehgliedes 12. Wenn das Drehglied (in Figur 2) im Gegenuhrzeigersinn um 90° verdreht wird, öffnet sich der Schlitz 13 nach rechts, so daß ein komplementär ausgebildeter Abschnitt der Sprühpistole 5 in den Schlitz 13 eingeführt werden kann, wonach die Sprühpistole 5 zusammen mit dem Drehglied 12 in die in Figur 2 dargestellte Lage zurückverdreht wird. Auf diese Weise kann die Sprühpistole 5 fest, jedoch lösbar mit dem Gehäuse 1 verbunden werden. Zum Ablösen werden die Sprühpistole 5 und die Drehglieder 12 der beiden Laschen 11 in entgegengesetzter Richtung verdreht, so daß die Sprühpistole aus dem Schlitz 13 und der Lasche 11 herausgenommen werden kann.The connecting means for the detachable fastening of the spray gun 5 to the housing 1 in the illustrated embodiment comprise two annular tabs 11 which are fixedly connected to the housing 1 and which are open on one side. In the tabs 11, a rotary member 12 is rotatably arranged, which has a radially extending, relatively wide slot 13. This slot 13 is aligned in Figure 2 by appropriate rotation of the rotary member so that it is closed by the tab 11 at its opening. This is the normal operating position of the rotary member 12. When the rotary member (in Figure 2) is rotated counterclockwise by 90 °, the slot 13 opens to the right so that a complementary portion of the spray gun 5 can be inserted into the slot 13, after which the spray gun 5 is rotated back together with the rotary member 12 into the position shown in Figure 2. In this way, the spray gun 5 can be fixed, but detachable with the Housing 1 are connected. To detach the spray gun 5 and the rotating members 12 of the two tabs 11 are rotated in the opposite direction, so that the spray gun can be removed from the slot 13 and the tab 11.

Wenn in der beschriebenen Weise die Sprühpistole 5 und das Gehäuse 1 zu der in Figur 1 dargestellten Einheit verbunden sind, kann man mit dieser Einheit im wesentlichen wie mit der Sprühpistole allein hantieren, da man die Einheit, ebenso wie die Sprühpistole 5 allein, am Betätigungsgriff 8 und gegebenenfalls am Handgriff 9 erfaßt. Das relativ schwere Gehäuse 1 mit den von ihm umschlossenen Bestandteilen pendelt dabei wegen der geschilderten drehbaren Verbindung frei um die Achse der Sprühpistole 5. Durch die pendelnde Befestigung des Gehäuses 1 an der Sprühpistole 5 ist gewährleistet, daß das Gehäuse 1 immer nach unten hängt, so daß sich die am Gehäuse 1 vorgesehenen Kühlluft-Ansaugschlitze 10 immer unterhalb der Sprühpistole 5 befinden.If the spray gun 5 and the housing 1 are connected to the unit shown in FIG. 1 in the manner described, this unit can be handled essentially like the spray gun alone, since the unit, like the spray gun 5 alone, can be handled by the operating handle 8 and optionally detected on the handle 9. The relatively heavy housing 1 with the components enclosed by it swings freely because of the rotatable connection described about the axis of the spray gun 5. The oscillating attachment of the housing 1 to the spray gun 5 ensures that the housing 1 always hangs down, so that the cooling air suction slots 10 provided on the housing 1 are always below the spray gun 5.

Die erwähnten, zu den Leibungen der Schlitze 3 komplementären Abschnitte der Sprühpistole 5 sind so ausgebildet, daß sie gleichzeitig eine axiale Verschiebung der Sprühpistole 5 in den Laschen 11 verhindern.The above-mentioned sections of the spray gun 5 which are complementary to the reveals of the slots 3 are designed such that at the same time they prevent an axial displacement of the spray gun 5 in the tabs 11.

Bei einer anderen Ausführungsform der Erfindung könnten statt der fest am Gehäuse 1 angeordneten Laschen 11 auch zwei entsprechende Ringglieder unmittelbar an der Sprühpistole 5 drehbar angeordnet sein. Diese drehbaren Ringglieder werden in an sich bekannter Weise direkt mit dem Gehäuse verrastet, so daß man ebenfalls wieder eine drehbare Verbindung zwischen Sprühpistole 5 und Gehäuse 1 erhält.In another embodiment of the invention, instead of the tabs 11 fixedly arranged on the housing 1, two corresponding ring members could also be rotatably arranged directly on the spray gun 5. These rotatable ring members are in a known manner directly with the Locked housing, so that you also get a rotatable connection between spray gun 5 and housing 1 again.

Bei der dargestellten Ausführungsform umfassen die Verbindungsmittel zwischen Sprühpistole 5 und Gehäuse 1 jeweils zwei Laschen oder Ringglieder. Grundsätzlich genügt es, nur eine einzige Lasche oder ein einziges Ringglied vorzusehen, das in diesem Falle dann axial entsprechend länger, beispielsweise in Form einer Buchse ausgebildet werden kann.In the embodiment shown, the connecting means between the spray gun 5 and the housing 1 each comprise two tabs or ring members. Basically, it is sufficient to provide only a single tab or a single ring member, which in this case can then be made axially correspondingly longer, for example in the form of a bushing.

Um den Elektromotor 3 vor dem Eintreten von Flüssigkeit, insbesondere Spritzwasser zu schützen, sind zwischen ihm und dem Gehäuse 1 Spritzschutzelemente in Form von Schaumstoffmatten vorgesehen, die in Figur 1 und 2 mit dem Bezugszeichen 14 bzw. 15 bezeichnet sind. Diese Spritzschutzmatten lassen das Ein- und Austreten von Kühlluft für den Elektromotor 3 zu, verhindern jedoch das Eindringen von Feuchtigkeit. Als Spritzschutz kann statt der erwähnten Schaumstoffmatten 14, 15 oder zusätzlich zu diesen Matten auch eine labyrinthartige Luftführung im Gehäuse 1 vorgesehen werden, um das Eindringen von Wassertropfen an spannungsführende Teile des Elektromotors 3 zu verhindern.In order to protect the electric motor 3 from the ingress of liquid, in particular splash water, 1 splash protection elements in the form of foam mats are provided between it and the housing, which are denoted in FIGS. 1 and 2 by reference numerals 14 and 15, respectively. These splash protection mats allow cooling air to enter and exit for the electric motor 3, but prevent the ingress of moisture. As a splash guard, instead of the aforementioned foam mats 14, 15 or in addition to these mats, a labyrinth-like air duct can be provided in the housing 1 in order to prevent water drops from entering live parts of the electric motor 3.

Das Gehäuse 1 des Hochdruck-Reinigungsgeräts 1 wird mit Vorteil als Kunststoff-Spritzgußteil ausgebildet, wobei an der in Figur 2 mit dem Pfeil 16 bezeichneten Stelle vorzugsweise ein Filmscharnier ausgebildet wird und das Gehäuse 1 somit einstückig aus zwei Halbschalen hergestellt werden kann.The housing 1 of the high-pressure cleaning device 1 is advantageously designed as a plastic injection-molded part, a film hinge preferably being formed at the point indicated by the arrow 16 in FIG. 2, and the housing 1 can thus be produced in one piece from two half-shells.

Wie aus der Zeichnung weiterhin hervorgeht, kann die aus dem Gehäuse 1 und der Sprühpistole 5 bestehende Einheit weiterhin mit einem Traggurt 17 verbunden werden, der es einer Bedienungsperson gestattet, die Einheit über die Schulter hängend zu tragen. In diesem Falle wird das Gewicht der Einheit von der Schulter aufgenommen und die Bedienungsperson braucht z. B. lediglich mit einer Hand den Betätigungsgriff 8 zu erfassen, um den Sprühstrahl geziehlt auf die zu reinigende Stelle zu richten. Der Traggurt 17, der beispielsweise über Ösen an den Laschen 11 befestigt werden kann, weist weiterhin einen die beiden Teile des Traggurts 17 verbindenden Traggriff 18 auf, der aus dem gleichen flexiblen Material wie der Traggurt 17 bestehen und an dem die erwähnte Einheit erfaßt und getragen werden kann.As can further be seen from the drawing, the unit consisting of the housing 1 and the spray gun 5 can also be connected to a carrying strap 17, which allows an operator to carry the unit hanging over the shoulder. In this case the weight of the unit is absorbed by the shoulder and the operator needs e.g. B. to grasp the operating handle 8 with only one hand in order to draw the spray jet towards the point to be cleaned. The carrying strap 17, which can be attached to the tabs 11, for example by means of eyelets, furthermore has a carrying handle 18 connecting the two parts of the carrying strap 17, which is made of the same flexible material as the carrying strap 17 and on which the mentioned unit is gripped and worn can be.

Die in Figur 3 und 4 dargestellte Ausführungsform eines Hochdruck-Reinigungsgerätes unterscheidet sich von derjenigen nach Figur 1 und 2 lediglich dadurch, daß im Gehäuse 1 statt des Elektromotors 3 ein üblicher (nicht sichtbarer) Verbrennungsmotor angeordnet ist. Im übrigen entspricht das Gerät nach Figur 3 und 4 bezüglich seiner Konstruktion und Funktion der Ausführungsform nach Figur 1 und 2.The embodiment of a high-pressure cleaning device shown in FIGS. 3 and 4 differs from that according to FIGS. 1 and 2 only in that a conventional (not visible) internal combustion engine is arranged in the housing 1 instead of the electric motor 3. Otherwise, the device according to FIGS. 3 and 4 corresponds in terms of its construction and function to the embodiment according to FIGS. 1 and 2.

Da ein Verbrennungsmotor weniger feuchtigkeitsempfindlich als ein Elektromotor ist, können bei der Ausführungsform gemäß Figur 3 und 4 die im Zusammenhang mit Figur 1 und 2 beschriebenen Spritzschutzelemente 14 und 15 entfallen.Since an internal combustion engine is less sensitive to moisture than an electric motor, the spray protection elements 14 and 15 described in connection with FIGS. 1 and 2 can be omitted in the embodiment according to FIGS. 3 and 4.

Hingegen ist es bei Verwendung eines Verbrennungsmotors zum Antrieb der Flüssigkeitspumpe günstig, zwischen dem Gehäuse 1 und der auf ihm durch die Verbindungsmittel, z. B. die Laschen 11 befestigten Sprühpistole 5 Vibrations-Dämpfungsmittel vorzusehen, die verhindern, daß die vom Verbrennungsmotor unvermeidlich ausgehenden Schwingungen auf die Sprühpistole und damit auf die Hände einer diese Sprühpistole haltenden Bedienungsperson übergehen. Derartige Vibrations-Dämpfungselemente sind an sich bekannt und brauchen daher im einzelnen hier nicht beschrieben zu werden. Es würde beispielsweise genügen, zwischen den Laschen 11 und dem Gehäuse 1 elastische Glieder, beispielsweise einen Gummipuffer oder dergleichen vorzusehen.On the other hand, when using an internal combustion engine to drive the liquid pump, it is favorable to use the Housing 1 and the on it by the connecting means, for. B. the tabs 11 attached spray gun 5 provide vibration damping means that prevent the inevitable vibrations emanating from the internal combustion engine on the spray gun and thus on the hands of an operator holding this spray gun. Such vibration damping elements are known per se and therefore do not need to be described in detail here. For example, it would be sufficient to provide elastic members, for example a rubber buffer or the like, between the tabs 11 and the housing 1.

Claims (7)

  1. High-pressure cleaning device comprising a housing (1), a liquid pump (2) arranged in the housing, a motor (3) for driving the liquid pump likewise enclosed by the housing, a spray gun (5) comprising a jet pipe (6) and an actuating handle (8), a hose (4) connecting the liquid pipe with the spray gun and connecting means (11, 12, 13) for releasably attaching the spray gun to the housing, characterized in that the connecting means (11, 12, 13) connect the housing (1) with the spray gun (5) so as to rotate and freely swing about the longitudinal axis of the spray gun (5) such that during handling of the unit consisting of housing (1) and spray gun (5) by manually gripping the spray gun (5) the housing (1) always hangs downwards.
  2. Device as defined in claim 1, characterized in that the connecting means comprise at least one sleeve (11) arranged on the housing (1), the spray gun (5) being insertable into said sleeve so as to rotate about its axis.
  3. Device as defined in claim 2, characterized in that a rotary member (12) having a radially extending slot (13) is rotatably mounted in the sleeve (11) and the spray gun (5) is insertable into the slot (13) with a complementary section.
  4. Device as defined in claim 1, characterized in that the connecting means comprise at least one ring member rotatably arranged on the spray gun (5), said ring member being lockable with the housing (1).
  5. Device as defined in claim 1, characterized in that vibration-damping elements are arranged between the housing (1) and the spray gun (5).
  6. Device as defined in claim 1, characterized in that the housing (1) is connectable with a carrying strap (17) permitting a suspended attachment of the device to the shoulder of an operator.
  7. Device as defined in claim 6, characterized in that a carrying handle (18) is provided on the carrying strap (17).
EP92920374A 1991-10-01 1992-09-30 High-pressure cleaning equipment Expired - Lifetime EP0606302B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4132670A DE4132670A1 (en) 1991-10-01 1991-10-01 HIGH PRESSURE CLEANER
DE4132670 1991-10-01
PCT/EP1992/002261 WO1993006938A1 (en) 1991-10-01 1992-09-30 High-pressure cleaning equipment

Publications (2)

Publication Number Publication Date
EP0606302A1 EP0606302A1 (en) 1994-07-20
EP0606302B1 true EP0606302B1 (en) 1995-09-20

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Application Number Title Priority Date Filing Date
EP92920374A Expired - Lifetime EP0606302B1 (en) 1991-10-01 1992-09-30 High-pressure cleaning equipment

Country Status (4)

Country Link
US (1) US5395052A (en)
EP (1) EP0606302B1 (en)
DE (2) DE4132670A1 (en)
WO (1) WO1993006938A1 (en)

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US8425203B2 (en) 2008-04-25 2013-04-23 Techtronic Outdoor Products Technology Limited Portable pressure washer system
US8444068B2 (en) 2005-10-26 2013-05-21 Techtronic Outdoor Products Technology Limited Dual flow pressure washer

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US8444068B2 (en) 2005-10-26 2013-05-21 Techtronic Outdoor Products Technology Limited Dual flow pressure washer
US8425203B2 (en) 2008-04-25 2013-04-23 Techtronic Outdoor Products Technology Limited Portable pressure washer system

Also Published As

Publication number Publication date
DE59203780D1 (en) 1995-10-26
WO1993006938A1 (en) 1993-04-15
US5395052A (en) 1995-03-07
EP0606302A1 (en) 1994-07-20
DE4132670A1 (en) 1993-04-08

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