WO2018219428A1 - Appareil de nettoyage haute pression - Google Patents

Appareil de nettoyage haute pression Download PDF

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Publication number
WO2018219428A1
WO2018219428A1 PCT/EP2017/062926 EP2017062926W WO2018219428A1 WO 2018219428 A1 WO2018219428 A1 WO 2018219428A1 EP 2017062926 W EP2017062926 W EP 2017062926W WO 2018219428 A1 WO2018219428 A1 WO 2018219428A1
Authority
WO
WIPO (PCT)
Prior art keywords
cleaning device
pressure cleaning
clearance compensation
compensation element
leg
Prior art date
Application number
PCT/EP2017/062926
Other languages
German (de)
English (en)
Inventor
Peter Pfaff
Original Assignee
Alfred Kärcher SE & Co. KG
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 Alfred Kärcher SE & Co. KG filed Critical Alfred Kärcher SE & Co. KG
Priority to PCT/EP2017/062926 priority Critical patent/WO2018219428A1/fr
Publication of WO2018219428A1 publication Critical patent/WO2018219428A1/fr

Links

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
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0211—Case coverings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0223—Electric motor pumps

Definitions

  • a cleaning liquid preferably water
  • the cleaning liquid can be supplied to the pump of the high-pressure cleaning device via a liquid supply line, for example a suction hose.
  • the cleaning fluid is pressurized by the pump and may be delivered via a fluid delivery line, such as a high pressure hose.
  • the liquid discharge line may carry at its free end a liquid delivery member, such as a spray lance or a spray gun.
  • the high-pressure cleaning device can be moved on a floor surface. For this purpose, the high-pressure cleaning device on two rotatably mounted wheels.
  • the legs In the extended position, the legs protrude clearly from the guide channels. This may cause the push bar to vibrate greatly if it is in its extended position during operation of the high pressure washer. The vibrations can cause damage to the legs and guide channels and considerable noise. To avoid such vibrations and the resulting noise, the bearing clearance of the legs in the guide channels should be low. Here, however, manufacturing tolerances of the legs are taken into account. The production of legs with very low manufacturing tolerances is associated with considerable costs.
  • Object of the present invention is therefore to develop a high-pressure cleaning device of the type mentioned in such a way that the legs mounted vibration in the guide channels and the manufacturing cost of the legs can be kept low.
  • the at least one clearance compensation element is integrally connected to the guide wall.
  • the at least one clearance compensation element can be glued or welded to the guide wall, for example. This facilitates the installation of the high-pressure cleaner.
  • the at least one clearance compensation element and the guide wall together form a one-piece plastic molded part.
  • the clearance compensation element is formed in such an embodiment of the invention to the guide wall.
  • the same plastic material is used for the production of the at least one clearance compensation element and the guide wall.
  • the rib has an arcuate edge which faces the leg.
  • the arcuate edge extends in a direction parallel to the longitudinal axis of the leg aligned plane.
  • the high-pressure cleaning device has in an advantageous embodiment of the invention, a locking device for locking the push handle.
  • the locking device has at least one locking element, which is associated with a leg and which engages at least in the extended position of the push bar with a positive locking element of the associated leg of the push bar.
  • the push bar can be locked at least in the extended position by at least one leg is associated with a locking element, which forms a positive connection in the extended position of the push bar with a positive connection element of the leg.
  • the locking device comprises two locking elements, each cooperating with a leg of the push bar and are at least in the extended position of the push bar in each case with a positive locking element of a leg engaged.
  • Vibrations of the push bar in the extended position are kept particularly low in such an embodiment of the invention by at least one of the legs is acted upon by one or more clearance compensation elements with a spring force, wherein the at least one clearance compensation element relative to the longitudinal axis of the leg axially offset from the locking element is arranged, which is associated with this leg.
  • the locking element can exert a locking force on the leg, and the at least one clearance compensation element can exert a spring force on the leg axially offset from the locking element. Vibrations of the push bar can be kept very low.
  • the at least one clearance compensation element is arranged axially offset from the arresting element in the direction away from the wheels.
  • the at least one clearance compensation element is arranged offset in the direction of the handle of the push bar upwards to the locking element.
  • Particularly low vibrations of the push bar, in particular in the extended position are achieved in a preferred embodiment of the invention in that the at least one clearance compensation element is arranged offset in the circumferential direction to the locking element.
  • the displaceably mounted in a guide channel leg is applied in such a configuration of the invention in a first peripheral region with a locking force of a locking element when the push bar is in its extended position, and in a second peripheral region of the leg of at least one clearance compensation element with a spring force applied.
  • the at least one clearance compensation element is arranged offset by at least 45 °, in particular offset by 90 ° to the locking element.
  • Figure 2 a perspective view of the high pressure cleaning device
  • Figure 4 an enlarged perspective view of the area A from
  • FIG. 10 an advantageous embodiment of a high-pressure cleaning device according to the invention is shown schematically and overall occupied by the reference numeral 10.
  • the high-pressure cleaning device 10 has a housing 12, in which a motor pump unit 14 with a motor 16 and a motor 16 driven by the pump 18 is arranged.
  • a motor pump unit is known per se to the person skilled in the art.
  • the motor pump unit 14 is therefore shown in the drawing only schematically by dashed lines.
  • two wheels 24, 26 are rotatably mounted about a common axis of rotation 28.
  • the high-pressure cleaning device 10 can be moved along a bottom surface.
  • the high-pressure cleaning device 10 starting from its illustrated in the drawing adjusted position of use about the common axis of rotation 28 of the two wheels 24, 26 are pivoted so that the high-pressure cleaning device 10 can be moved in the manner of a sack truck.
  • the high-pressure cleaner 10 has a U-shaped push bar 30, which moves back and forth between a retracted position shown in solid line in Figure 1 and an extended position shown in dashed line in Figure 1 can be.
  • the push bar 30 has a first leg 32 and a second leg 34, which are rigidly connected to each other via a handle 36.
  • the handle 36 takes a much greater distance to the housing 12 than in the retracted position. This makes it easier for the user to grasp the handle 36 for moving the high-pressure cleaner 10 in a standing position.
  • the housing 12 has a first guide channel 38 and a second guide channel 40.
  • the first guide channel 38 is shown enlarged in Figure 4, and the second guide channel 40 is shown in Figure 5 enlarged.
  • the first leg 32 is slidably mounted in the direction of its longitudinal axis 44
  • the second leg 34 is displaceably mounted in the direction of its longitudinal axis 46.
  • the housing 12 is encompassed on its rear side by a housing cover 48, which covers a locking device 50.
  • the locking device 50 has a first Leg 32 associated first locking element 52 and a second leg 34 associated second locking element 54.
  • the two locking elements 52, 54 can be moved back and forth between a locking position shown in the drawing and a release position.
  • the two legs 32, 34 each have a lower positive locking element 56 and an upper positive locking element 58.
  • the upper form-locking elements 58 are arranged at the level of the locking elements 52 and 54 and the locking elements 52, 54 form a positive locking with the upper form-locking element 58 in order to lock the push bar 30.
  • the lower form-locking elements 56 are arranged at the level of the locking elements 52, 54, and the locking elements 52, 54 form a positive connection with the lower form-locking elements 56.
  • the locking device 50 also has a spring element 60 which cooperates via coupling elements 62 and 64 with the locking elements 52 and 54, so that the locking elements 52, 54 are pressed under the action of the spring element 60 in its locking position. With the aid of an actuating element 66 of the locking device 50, the locking elements 52, 54 are moved against the action of the spring element 60 from its locking position to its release position to allow unhindered sliding movement of the push bar 30.
  • the first guide channel 38 has a guide wall 68 which carries at its upper edge 72 a first clearance compensation element in the form of a first rib 76.
  • the second guide channel 38 comprises a guide wall 70 which carries at its upper edge 74 a second clearance compensation element in the form of a second rib 78.
  • the ribs 76, 78 are integrally formed on the respective guide wall 68 or 70 and form with the respective guide wall 68 or 70 a one-piece plastic molded part.
  • the ribs 76 and 78 are configured identically and protrude into the respective guide channel 38 or 40, wherein they are aligned parallel to the respective longitudinal axis 44 and 46 of the legs 32, 34 and the respective legs 32 and 34th facing an arcuate edge 80 have. This becomes clear in particular from FIGS. 3, 4 and 5.
  • the ribs 76, 78 Due to their positioning at the upper edge 72 and 74 of the guide walls 68, 70, the ribs 76, 78 have a formulaic elasticity, so that they act on the respective guide channel 38, 40 slidably mounted legs 32, 34 of the push bar 30 with a spring force, the is aligned perpendicular to the longitudinal axis 44, 46 of the respective leg 32 and 34, respectively. With the help of the ribs 76, 78, the bearing clearance of the legs 32, 34 is reduced without the risk that the legs 32, 34 tilt when moving the push bar 30. By the action of the legs 32, 34 with a spring force vibrations of the push bar 30 are kept low, even when the push bar 30 assumes its extended position and the high-pressure cleaner 10 is set in motion. Manufacturing tolerances of the legs 32, 34 and the guide channels 38, 40 are compensated by the ribs 76, 78.
  • the ribs 76, 78 are arranged offset relative to the locking elements 52 and 54, relative to the longitudinal axes 44, 46 of the legs 32, 34, both in the axial direction and in the circumferential direction.
  • the ribs 76, 78 are positioned in the illustrated embodiment offset by approximately 90 ° to the locking elements 52 and 54, and in the axial direction, the ribs 76, 78 are positioned offset towards the upper end of the guide walls 68, 70, wherein they assume a position directly at the upper edge 72, 76 of the respective guide wall 68 and 70, respectively.

Landscapes

  • Cleaning In General (AREA)

Abstract

L'invention concerne un appareil de nettoyage haute pression (10) pourvu d'un logement (12), dans lequel sont agencés un moteur (16) et une pompe (18) entraînée par le moteur (16), et de deux roulettes (24, 26) montées en rotation pour le déplacement de l'appareil de nettoyage haute pression (10), ainsi que d'un guidon de poussée (30) pouvant coulisser en va-et-vient entre une position rentrée et une position sortie, lequel guidon est en forme de U et présente deux branches (32, 34) qui sont reliées l'une à l'autre par l'intermédiaire d'une poignée (36), chaque branche (32, 34) étant montée coulissante dans un canal de guidage (38, 40). L'objet de l'invention est de perfectionner l'appareil de nettoyage haute pression (10) de telle manière que les branches (32, 34) sont montées avec très peu de vibrations dans les conduits de guidage (38, 40) et que les coûts de fabrication pour les branches (32, 34) peuvent être maintenus réduits. À cet effet, selon l'invention, les conduits de guidage (38, 40) présentent chacun une paroi de guidage (68, 70) sur laquelle est agencé au moins un élément de compensation de jeu (76, 78) qui fait saillie dans le conduit de guidage (38, 40) respectif et qui soumet la branche (32, 34) montée dans le conduit de guidage (38, 40) à une force de ressort.
PCT/EP2017/062926 2017-05-29 2017-05-29 Appareil de nettoyage haute pression WO2018219428A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/062926 WO2018219428A1 (fr) 2017-05-29 2017-05-29 Appareil de nettoyage haute pression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/062926 WO2018219428A1 (fr) 2017-05-29 2017-05-29 Appareil de nettoyage haute pression

Publications (1)

Publication Number Publication Date
WO2018219428A1 true WO2018219428A1 (fr) 2018-12-06

Family

ID=58772916

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/062926 WO2018219428A1 (fr) 2017-05-29 2017-05-29 Appareil de nettoyage haute pression

Country Status (1)

Country Link
WO (1) WO2018219428A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429306A (en) * 1991-03-18 1995-07-04 Alfred Karcher Gmbh & Co. High-pressure cleaning device with extendable handle
US20050102795A1 (en) * 2003-11-13 2005-05-19 Chaw Khong Technology Co., Ltd. Enhanced luggage handle
US20080245425A1 (en) * 2007-04-03 2008-10-09 Faip North America, Inc. Pressure washer
WO2014072000A1 (fr) * 2012-11-12 2014-05-15 Alfred Kärcher Gmbh & Co. Kg Nettoyeur haute pression

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429306A (en) * 1991-03-18 1995-07-04 Alfred Karcher Gmbh & Co. High-pressure cleaning device with extendable handle
US20050102795A1 (en) * 2003-11-13 2005-05-19 Chaw Khong Technology Co., Ltd. Enhanced luggage handle
US20080245425A1 (en) * 2007-04-03 2008-10-09 Faip North America, Inc. Pressure washer
WO2014072000A1 (fr) * 2012-11-12 2014-05-15 Alfred Kärcher Gmbh & Co. Kg Nettoyeur haute pression

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