Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
  • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
  • A47L11/4052—Movement of the tools or the like perpendicular to the cleaning surface
  • A47L11/4055—Movement of the tools or the like perpendicular to the cleaning surface for lifting the tools to a non-working position
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
  • A47L11/02—Floor surfacing or polishing machines
  • A47L11/10—Floor surfacing or polishing machines motor-driven
  • A47L11/14—Floor surfacing or polishing machines motor-driven with rotating tools
  • A47L11/16—Floor surfacing or polishing machines motor-driven with rotating tools the tools being disc brushes
  • A47L11/162—Floor surfacing or polishing machines motor-driven with rotating tools the tools being disc brushes having only a single disc brush
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
  • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
  • A47L11/4072—Arrangement of castors or wheels

Definitions

• the invention relates to a floor cleaning machine with a housing which carries on the top a drive unit having an electric motor and on the inside a cleaning and / or polishing disc which is rotatably mounted about an essentially vertical axis and is spring-loaded with respect to its horizontal normal position and is slightly adjustable and which is connected to a pivotably mounted guide rod and a swivel castor chassis.
• Such a floor cleaning machine is known from DE-A-3638666.
• a castor is mounted on the underside of a rocker on the underside of the housing in a spring-supported manner and is connected to the housing. This ensures that the cleaning and / or polishing disc no longer has to absorb the total weight of the floor cleaning machine.
• the roller trolley supports part of the machine weight on the floor. Compared to machines in which the machine weight is supported on the floor only by the cleaning and / or polishing disk, in this known machine the proportion of the weight components pressing the working surface of the disk onto the floor can be kept substantially lower, so that the cleaning and / or polishing disc can be driven at a higher speed and / or the total weight of the Machine can be increased.
• Standard motors can then be used instead of weight-optimized special motors.
• this known floor cleaning machine it is also possible to load or relieve the swiveling spring-supported roller carriage by slightly lifting or lowering the guide rod relative to the normal position and thereby releasing corresponding areas of the cleaning and / or polishing disc more strongly onto the floor to press.
• the front or rear circumferential area of the cleaning and / or polishing disk in the working direction can be pressed more strongly onto the floor. This results in a transverse force acting transversely to the working direction, which leads to the desired oscillating movements of the floor cleaning machine, so that work surfaces can be worked comfortably without the operator having to exert additional force for transverse movement of the machine which are larger than the diameter of the cleaning and / or polishing disc.
• a disadvantage of this known floor cleaning machine is that a not inconsiderable proportion of the machine weight is always transferred to the floor via the cleaning and / or polishing disk. This leads to the fact that the previously known floor cleaning machine can undesirably break out laterally when starting up. The operating personnel can only counteract this process with effort. In the previously known floor cleaning machine, it is not possible to distribute the machine weight to the roller carriage and the cleaning and / or polishing disc in such a way that the entire surface of the cleaning and / or polishing disc is flat or almost completely depressurized lies on the floor to be cleaned.
• the object of the invention is to improve a generic floor cleaning machine in such a way that the machine weight is almost exclusively supported on the floor by the undercarriage, but the cleaning and / or polishing disk continues to be focused on the floor in certain areas by pivoting the guide rod can be pressed on.
• this object is achieved according to the invention in that the swivel castor chassis supports the housing in an equilibrium-stable manner on the floor and in the housing a support plate carrying the drive unit, the cleaning and / or polishing disc and the guide rod by one mounted on the housing and on the plate, horizontal pivot axis is pivotally spring-supported.
• the support plate provided with the complete drive unit and the cleaning and / or polishing disc and the guide rod is designed so that it can be rocked or swiveled without the housing carrying out the desired rocking or swiveling movement.
• the entire weight of the machine is supported on the floor by the housing and the swivel roller chassis.
• the cleaning machine is in its initial or ready position in a stable equilibrium and the cleaning and / or polishing disk lies flat or almost flat with the entire surface on the floor in a pressure-free or approximately pressure-free manner. There is no longer any danger that the floor cleaning machine will break out when the cleaning and / or polishing disk starts up.
• the floor cleaning machine can be easily pushed back and forth.
• the resiliently supported mounting of the carrier plate with drive unit and cleaning and / or polishing disc enables it to be tilted or Swiveling in the chassis formed by the housing and the swivel castor chassis by slightly raising or lowering the guide rod.
• the front or rear circumferential area of the disk in the direction of movement of the floor cleaning machine can be pressed onto the floor to a greater extent, so that a back and forth operation as described above is possible.
• Due to the formation of a swivel roller chassis the rollers or wheels set themselves crosswise when the rotating cleaning and / or polishing disc is pressed in regions, due to the transverse force generated thereby, and enable the transverse force to be converted into the desired pendulum movement.
• the total weight of the floor cleaning machine can theoretically be increased to such an extent that the operating personnel are just able to move it.
• the pressure preload of the compression springs means that the cleaning and / or polishing disc only ever rests on the floor with a slight pressure.
• An advantageous embodiment of the invention that is technically simple to implement is characterized in that axially opposite one slide block arranged on the support plate and one shaft block arranged on the housing are each formed with a pivot axis connecting them and offset in the direction of the guide rod between the support plate and the housing, also axially opposite each other, a compression spring is arranged.
• the carrier plate is securely mounted in the housing and can be pivoted against the pressure force of the compression springs using the lever arm of the guide rod without great effort.
• the pressure preload of the compression springs is expediently set here in such a way that the carrier plate is held in the rest position in an at least approximately horizontal position, as is also provided by the invention.
• a further advantageous embodiment of the invention consists in that the pressure preload of the compression springs is adjustable.
• the invention provides in a further embodiment that the swivel castor undercarriage has at least two, preferably three, swivel has rollers, of which at least one swivel roller is height-adjustable. This makes it possible to vary the contact pressure of the cleaning and / or polishing disc on the floor and to adapt the floor cleaning machine to cleaning and / or polishing discs of different disc thickness.
• a dust ring with bristle trimmings on the bottom is arranged to be height-adjustable. With the help of the dust ring it is prevented that the fan or blower effect generated by the high speed of the cleaning and / or polishing disc does not lead to dust being whirled up. In addition, the network connection cable is prevented from being run over because the bristle covering pushes it aside.
• the invention provides that the floor cleaning machine has a warning lamp which is switched in a current- and / or power-dependent manner by means of a relay and which lights up when the engine is subjected to excessive stress.
• the warning lamp lights up the operating personnel are informed that the floor cleaning machine is no longer working in the optimum performance range.
• the latter is in particular a danger that occurs with floor cleaning machines operating at high speeds.
• Figure 1 is a side view of the floor cleaning machine in a partially sectioned representation.
• Fig. 2 is a top view of the floor cleaning machine
• FIG. 3 shows an incomplete front view of the floor cleaning machine with a partial section along the line A-A of FIG. 2;
• FIG. 4 shows a longitudinal section through a height-adjustable swivel roller of the floor cleaning machine
• Fig. 5 is a plan view of the caster according to Fig. 4;
• FIG. 6 is a top view of a dust ring
• Fig. 7 is a side view of the dust ring of FIG. 6 and in
• FIG. 8 shows a circuit diagram for a current-dependent or power-dependent relay for switching a warning light.
• the floor cleaning machine generally designated 111 in FIGS. 1 and 2, has a carrier plate 11.
• a drive unit 10 containing an electric motor is attached to the top of the carrier plate 11.
• the carrier plate 11 is trapezoidal and has a holder 4 for pivotably mounting the guide rod 20 supporting lower part 30 provided.
• the lower part 30 is fastened with one end of its housing and with a connecting rod 5 pivotably mounted in the lower part 30 in the lower part 30.
• the guide rod 20 has a handle 6 and an adjustment handle 21 which enables the guide rod to pivot in the holder 4.
• the carrier plate 11 is spring-mounted in an upper-side opening of a hood-shaped housing 12 so as to be pivotable about an axis formed by two diagonally opposed pivot axes 7, 8.
• a drive plate 60 with a cleaning and / or polishing disk 61 fastened to it is arranged on an essentially vertical axis 9, the axis 9 with the drive unit 10 and thus with the carrier plate 11 is essentially rigidly connected.
• a shaft bearing block 13 is fastened diagonally opposite to the inside of the housing 12 and a slide bearing block 14 on the underside of the carrier plate 11, each of which is connected to one another by means of a pivot axis 7, 8 mounted in a shaft bearing block and a sliding bearing block are connected.
• the two pivot axes 7 and 8 form the horizontal axis about which the carrier plate 11 can be pivoted.
• Hier ⁇ offset in the direction of the guide rod 20, also diagonally opposite, between the underside of the support plate 11 and in the top opening projecting spring bearings 59 of the housing 12, the support plate 11 supporting compression springs 17 are arranged.
• the pressure preload of the compression springs 17 is set such that they hold the carrier plate 11 in an at least approximately horizontal position with respect to the top of the housing 12 and the bottom 22. 5
• the housing 12 is of circular design and is designed as a machine and chassis housing in that three swivel roller holders 40, 41 are fastened to it, each with a swivel roller 19.
• the housing 12 is open on its underside, the circular and flexible drive plate 60 with attached cleaning and / or polishing disk 61 being arranged within the housing 12 in such a way that the cleaning and / or polishing disk 61 with it on the working surface 22 lying on the floor 22 still protrudes in the vertical direction beyond the lower edge of the housing 12 covering the circumference thereof.
• the swivel roller holder 40 is arranged on the front of the housing 12, opposite the guide rod 20.
• the two other swivel roller holders 41 are fastened on the opposite side of the housing 12 at a distance from one another.
• the swivel castors 19 are each pivotable about a vertical axis 23.
• the front swivel roller is also fastened in height-adjustable manner in the swivel roller holder 40.
• the swivel roller holder 40 or the swivel roller 19 arranged therein is set in such a way that the cleaning and / or polishing disk 61 rests on the floor 22 almost without pressure.
• the swivel castor holders 40, 41 with swivel casters 19 form the swivel castor undercarriage of the floor cleaning machine 111.
• a bristle trim 51 and a bumped or glued bump guard 52 made of elastic plastic and having a dust ring 50 can be adjusted in height to touch the bottom ⁇ O
• the dust ring 50 encompasses the entire circumference of the housing 12 in the region of the side wall 18 and lies with its bristle trim 51 on the bottom 22.
• the dust ring 50 is divided by a parting line 53.
• holders 54 and 55 are arranged on the dust ring and connected by means of a tension spring 58.
• a guide screw 56 guided in an elongated hole of the holder 55 is provided.
• the holders 55 and 54 each fastened on an area of the dust ring 50 adjacent to the parting line 53, must be moved away from one another.
• the tension spring 58 allows the parting line to be opened, which is sufficient to be able to pull the dust ring 50 off the machine via the bead 42 of the housing 12.
• the guide screw 56 and the elongated hole of the holder 55 are arranged on the side of the parting line 53 on which the holder 54 is fastened.
• the holder 55 is fixed to the dust ring on the side adjacent to the parting line 53.
• the vertically adjustable swivel roller carrier 45 shown in FIGS. 4 and 5 is fastened in the swivel roller holder 40 by means of a threaded rod 47 and an adjusting screw 44 and on lateral guide rods 46.
• the roller carrier 45 with the swivel roller 19 is continuously adjusted in height in the vertical direction via the threaded rod 47.
• the height adjustability is supported by a pressure support spring 43 which is mounted between the swivel roller holder 40 and the swivel roller carrier 45.
• the floor cleaning machine 111 has a warning AA
• pressing down the guide rod 20 in the direction of the black arrow 27 causes the carrier plate 11 to pivot downward against the spring force of the compression spring 17 and the cleaning and / or polishing disc 61 - as if by indicated by the arrow 28 - pressed from the horizontal normal position shown in FIGS. 1 and 4 in its circumferential region on the guide rod side onto the floor 22.
• the opposite circumferential area of the cleaning and / or polishing disk 61 is raised accordingly.

Landscapes

• Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
• Grinding Of Cylindrical And Plane Surfaces (AREA)
• Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
• Pinball Game Machines (AREA)
• Cleaning In General (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=6454729

Family Applications (1)

Country Status (4)

Families Citing this family (12)

Family Cites Families (11)

• 1992
  • 1992-03-21 DE DE4209282A patent/DE4209282C1/de not_active Expired - Fee Related
• 1993
  • 1993-03-13 EP EP93906523A patent/EP0631485B1/fr not_active Expired - Lifetime
  • 1993-03-13 AT AT93906523T patent/ATE139890T1/de not_active IP Right Cessation
  • 1993-03-13 WO PCT/EP1993/000585 patent/WO1993018700A1/fr not_active Ceased
  • 1993-03-13 DE DE59303145T patent/DE59303145D1/de not_active Expired - Fee Related

Non-Patent Citations (1)

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