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EP3750463A1 - Machine à brosse unique orbitale - Google Patents

Machine à brosse unique orbitale Download PDF

Info

Publication number
EP3750463A1
EP3750463A1 EP20165885.3A EP20165885A EP3750463A1 EP 3750463 A1 EP3750463 A1 EP 3750463A1 EP 20165885 A EP20165885 A EP 20165885A EP 3750463 A1 EP3750463 A1 EP 3750463A1
Authority
EP
European Patent Office
Prior art keywords
front portion
base
frame
machine
spring damping
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.)
Granted
Application number
EP20165885.3A
Other languages
German (de)
English (en)
Other versions
EP3750463B1 (fr
Inventor
Roberto Beretta
Luca Lenzi
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.)
Ghibli & Wirbel SpA
Original Assignee
Ghibli & Wirbel SpA
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 Ghibli & Wirbel SpA filed Critical Ghibli & Wirbel SpA
Publication of EP3750463A1 publication Critical patent/EP3750463A1/fr
Application granted granted Critical
Publication of EP3750463B1 publication Critical patent/EP3750463B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02—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
    • A47L11/02—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
    • A47L11/164—Parts or details of the brushing tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/28—Floor-scrubbing machines, motor-driven
    • A47L11/282—Floor-scrubbing machines, motor-driven having rotary tools
    • A47L11/283—Floor-scrubbing machines, motor-driven having rotary tools the tools being disc brushes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4038—Disk shaped surface treating tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4052—Movement of the tools or the like perpendicular to the cleaning surface
    • 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
    • A47L11/4063—Driving means; Transmission means therefor
    • A47L11/4069—Driving or transmission means for the cleaning tools

Definitions

  • the present invention relates to a single-brush rotary-orbital machine, for example adapted to perform different types of treatment on a floor of a building.
  • WO2018/177958 discloses a single brush rotary-orbital machine adapted to perform different types of treatment on a floor.
  • This machine comprises a frame comprising a rear drag handle for providing control of the machine and a first and a second front bases.
  • the second front base is located below the first front base.
  • a pair of wheels are connected to the rear of the frame to allow movement of the machine.
  • the machine comprises a motor adapted to actuate a work tool with a rotary-orbital motion.
  • This motor is supported by the second front base and extends through a passage opening in the first front base.
  • the work tool is supported at a bottom surface of the second front base.
  • the bottom surface faces the floor.
  • the motor is supported at a top surface of the second front base, opposite to the bottom surface.
  • the second front base is supported by the first front base to idly rotate about an oscillation that is parallel to the floor and perpendicular to the forward moving direction of the machine.
  • the high intensity of the vibrations received by the operator dramatically reduces the continuous operation time of this single-brush machine. That is, the greater the intensity of the vibrations received by an operator, the greater the health risks for the operator in case of prolonged use of the machine.
  • Another drawback is that vibrations increase when the single-brush machine of the prior art is used to perform a treatment on an imperfectly smooth surface, such as a carpet. As a result, the continuous operation time of this machine dramatically drops when the surface to be treated exhibits a high degree of roughness.
  • the technical purpose of the present invention is to provide a single-brush rotary-orbital machine that can obviate the drawbacks of the prior art.
  • an object of the present invention is to provide a single-brush rotary-orbital machine that can afford easy maneuverability while ensuring prolonged use by operators.
  • a further object of the present invention is to provide a single-brush rotary-orbital machine that is able to effectively perform a cleaning treatment on various types of surfaces without limiting the continuous operation time of the single-brush machine.
  • the vibrations produced by the motor upon rotary-orbital actuation of the work tool can be effectively damped.
  • numeral 1 designates a single-brush rotary-orbital machine.
  • This machine 1 comprises a frame 2 comprising a rear drag handle 21 for providing control of the machine 1.
  • the drag handle 21 extends between a lower portion 211 and an opposite upper portion 212 in a longitudinal direction Y-Y.
  • the drag handle 21 comprises a pair of knobs 213 located at the upper portion 212 and adapted to be held by an operator for controlling the machine 1.
  • the frame 2 also comprises moving means 22 of the machine 1.
  • these moving means 22 comprise a pair of wheels 221 for resting on the floor, which are mutually opposite with respect to the drag handle of 21. These wheels 221 are placed proximate to the lower portion 211 of the rear drag handle 21.
  • the frame 2 comprises a front portion 23 having a passage opening 231.
  • This front portion 23 projects out of the lower portion 211 of the drag handle 21 in the direction of forward movement of the machine 1.
  • the direction of forward movement of the machine 1 is parallel to the floor.
  • this front portion 23 has a substantially plate-like shape.
  • the machine 1 comprises a support base 3 for a work tool 4, for example a brush, for a polishing pad or a floor-treating liquid dispensing nozzle connected to a reservoir, not shown.
  • This base 3 has a bottom surface 31 that faces the floor when the machine 1 is in operation, and an opposite top surface 32.
  • the work tool 4 is supported by the base 3 at the bottom surface 31 of the base 3.
  • the base 3 is placed below the front portion 23.
  • the top surface 32 of the base 3 faces the front portion 23. Therefore, this front portion 23 has a bottom surface 232 that faces the base 3 and, in particular the top surface 32 of the base 3, and an opposite top surface 233.
  • the machine 1 further comprises a motor 5 which is adapted to actuate the work tool 4 supported by the base 3, preferably with a rotary-orbital motion.
  • the motor 5 extends through the passage opening 231 of the front portion 23 of the frame 2 and is supported by the base 3.
  • the motor 5 is supported by the base 3 at the top surface 32 of the base 3.
  • the front portion 23 of the frame 2 and the base 3 are connected to each other in a direction of connection X-X by elastic damping means 6.
  • the direction of the connection X-X is perpendicular to the front portion 23 and to the base 3.
  • the elastic damping means 6 allow the front portion 23 of the frame 2 and the base 3 to move relative to each other in the direction of connection X-X. In operation, the damping means 6 allow the front portion 23 to move toward and away from the base 3 in the direction of connection X-X.
  • the elastic damping means 6 allow the front portion 23 and the base 3 to move relative to each other, thereby enhancing maneuverability of the machine 1 by an operator while effectively dampening the vibrations produced by the motor 5 which actuates the working tool 4 with a rotary-orbital motion.
  • the front portion 23 of the frame 2 and the base 3 are only connected to each other by the elastic damping means 6.
  • the front portion 23 of the frame 2 and the base 3 have no additional connection means, such as hinge connecting means, that would transfer the vibrations produced by the motor 5 to the rear drag handle 21 and hence to the operator that controls the machine 1.
  • the front portion 23 of the frame 2 and the base 3 are connected to each other by at least two elastic damping means 6 mutually opposite with respect to the motor 5.
  • the front portion 23 of the frame 2 and the base 3 are connected to each other by at least two elastic damping means 6 mutually opposite with respect to the passage opening 231 of the front portion 23.
  • these two elastic damping means 6 are symmetric about a plane of symmetry of the front portion 23 identified by an axis of symmetry Z-Z of the front portion 23. This axis of symmetry Z-Z is perpendicular to the direction of forward movement of the machine 1.
  • the front portion 23 of the frame 2 and the base 3 are connected to each other by at least four elastic damping means 6 arranged around the motor 5.
  • the front portion 23 of the frame 2 and the base 3 are connected to each other by at least four elastic damping means 6 arranged around to the passage opening 231 of the front portion 23.
  • these four elastic damping means 6 are arranged in such positions as to define two pairs of elastic damping means 6, which are symmetric to each other about the plane of symmetry of the front portion 23.
  • each elastic damping means 6 comprises a first 61 and a second 62 spring damping elements.
  • the first spring damping element 61 is interposed between the base 3 and the front portion 23 of the frame 2. In other words, the first spring damping element 61 is interposed between the top surface 32 of the base 3 and the bottom surface 232 of the front portion 23.
  • the second spring damping element 62 is situated on the side opposite to the first spring damping element 61 with respect to the front portion 23. In other words, the second spring damping element 62 is placed above the top surface 233 of the front portion 23. In yet other words, the second spring damping element 62 projects out of the top surface 233 of the front portion 23 in the direction of connection X-X.
  • the presence of the first 61 and the second 62 spring damping elements provides vibration damping both when the front portion 23 moves toward the base 3 and when the front portion 23 moves away from the base 3.
  • the elastic stiffness of the first spring damping element 61 is smaller than the elastic stiffness of the second spring damping element 62. Therefore, the range of movement of the front portion 23 away from the base 3 is smaller than the range of movement of the front portion 23 toward the base 3. Still preferably, the range of movement of the front portion 23 toward the base 3 is limited by a limit-stop element 9 that is fixed to the top surface 32 of the base 3.
  • the front portion 23 does not contact the top surface 32 of the base 3 upon mutual movement of the front portion 23 relative to the base 3, which avoids the risk of wear of and damage to the front portion 23 and the base 3.
  • the limit-stop element 9 allows the range of movement of front portion 23 toward the base 3 to be adjusted as needed for the control of the machine 1.
  • each elastic damping means 6 comprises a first abutment member 63 placed at the bottom surface 232 of the front portion 23 of the frame 2.
  • This first abutment member 63 has a substantially plate-like shape.
  • the first spring damping element 61 is configured to have a compression/extension operation between the base 3 and the first abutment member 63. In other words, the first spring damping element 61 extends between a lower end 611 and an opposite upper end 612 in the direction of connection X-X.
  • the lower end 611 of the first spring damping element 61 abuts the base 3, whereas the upper end 612 of the first spring damping element 61 abuts the first abutment member 63.
  • each elastic damping means 6 comprises a second abutment member 64 placed at the top surface 233 of the front portion 23 of the frame 2, and a third abutment member 65 placed above the top surface 233 of the front portion 23. Both the second 64 and the third 65 abutment members have a substantially plate-like shape.
  • the second spring damping element 62 is configured to have an extension and compression operation between the second 64 and the third 65 abutment members. In other words, the second spring damping element 62 extends between a lower end 621 and an opposite top end 622 in the direction of connection X-X.
  • the first spring damping element 61 is compressed due to the thrust exerted by the front portion 23, while the second spring damping element 62 is being extended. Conversely, when the front portion 23 moves away from the base 3, the second spring damping element 62 is compressed due to the thrust exerted by the front portion 23, while the first spring damping element 61 is being extended.
  • the third abutment member 65 is fixed above the top surface 233 of the front portion 23 of the frame 2 by means of a screw 7 and nut 8 assembly.
  • each abutment member 63, 64 and 65 comprises a respective hole 631, 641, 651.
  • the screw 7 is coupled to the base 3 and extends through the first 61 and the second 62 spring damping elements and through a corresponding hole 234 in the front portion 23 of the frame 2. In addition, this screw extends through each hole 631, 641, 651 of each of the abutment members 63, 64 and 65.
  • the third abutment member 65 is fixed above the top surface 233 of the front portion 23, also as a result of the thrust exerted by the front portion 23 as the latter moves away from the base 3.
  • each elastic damping means 6 comprises a sleeve 66 locked in a respective hole 234 in the front portion 23 of the frame 2 by means of a lock element 67.
  • This sleeve 66 extends through the first 61 and the second 62 spring damping elements.
  • this sleeve 66 can hold the first 61 and the second 62 spring damping elements in position upon movement of the front portion 23 relative to the base 3. That is, the sleeve 66 prevents any excessive deviation of the first 61 and the second 62 spring damping elements along directions transverse to the direction of connection X-X, upon movement of the front portion 23 relative to the base 3.
  • the lock element 67 comprises a through channel 671 that extends between a lower flange 672 and an opposite upper flange 673 in the direction of connection X-X.
  • Such lock element 67 fits in a corresponding hole 234 of the front portion 23 of the frame 2 such that the lower flange 672 will abut the bottom surface 232 of the front portion 23 whereas the upper flange 673 abuts the top surface 233 of the front portion 23.
  • the lock element 67 fits in a corresponding hole 234 in the front portion 23, thereby holding the edge of such hole 234 of the front portion 23 between the lower flange 672 and the upper flange 673.
  • the sleeve 66 is locked in the through channel 671 of the lock element 67.
  • the first abutment member 63 is placed at the lower flange 672 of the lock element 67, whereas the second abutment element 64 is placed at the upper flange 673 of the lock element 67.
  • the screw 7 is introduced into the sleeve 66 so that a terminal end 71 of the screw 7 will come out of the sleeve 66 above the top surface 233 of the front portion 23. Then, the third abutment member 65 is fixed by means of the nut 8 at the terminal end 71 of the screw 7. In other words, the third abutment member 65 is interposed between the sleeve 66 and the nut 8.
  • the machine 1 further comprises a covering case 10.
  • This covering case 10 may be removably placed on top of to the front portion 23 of the frame 2 and of the base 3 to protect them during operation of the machine 1.

Landscapes

  • Motor Or Generator Frames (AREA)
  • Vibration Prevention Devices (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Automatic Disk Changers (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
EP20165885.3A 2019-05-17 2020-03-26 Machine à brosse unique orbitale Active EP3750463B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102019000006938A IT201900006938A1 (it) 2019-05-17 2019-05-17 Macchina monospazzola roto-orbitale

Publications (2)

Publication Number Publication Date
EP3750463A1 true EP3750463A1 (fr) 2020-12-16
EP3750463B1 EP3750463B1 (fr) 2022-05-04

Family

ID=67734763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20165885.3A Active EP3750463B1 (fr) 2019-05-17 2020-03-26 Machine à brosse unique orbitale

Country Status (2)

Country Link
EP (1) EP3750463B1 (fr)
IT (1) IT201900006938A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE640875C (de) * 1935-02-17 1937-01-14 Georg Bode Bohnergeraet mit waagerecht sich drehender Tellerbuerste
WO1993018700A1 (fr) * 1992-03-21 1993-09-30 Henkel-Ecolab Gmbh & Co. Ohg Machine a nettoyer des planchers
US5507061A (en) * 1989-04-05 1996-04-16 Nobuyoshi Kumaki Rotary brush floor polisher
WO2018177958A1 (fr) 2017-03-31 2018-10-04 T.M.B. S.R.L. Machine à brosse unique orbitale pour le traitement de sols

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE640875C (de) * 1935-02-17 1937-01-14 Georg Bode Bohnergeraet mit waagerecht sich drehender Tellerbuerste
US5507061A (en) * 1989-04-05 1996-04-16 Nobuyoshi Kumaki Rotary brush floor polisher
WO1993018700A1 (fr) * 1992-03-21 1993-09-30 Henkel-Ecolab Gmbh & Co. Ohg Machine a nettoyer des planchers
WO2018177958A1 (fr) 2017-03-31 2018-10-04 T.M.B. S.R.L. Machine à brosse unique orbitale pour le traitement de sols

Also Published As

Publication number Publication date
EP3750463B1 (fr) 2022-05-04
IT201900006938A1 (it) 2020-11-17

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