US20030192573A1 - Floor care machine with counter acting force - Google Patents

Floor care machine with counter acting force Download PDF

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Publication number
US20030192573A1
US20030192573A1 US10/124,438 US12443802A US2003192573A1 US 20030192573 A1 US20030192573 A1 US 20030192573A1 US 12443802 A US12443802 A US 12443802A US 2003192573 A1 US2003192573 A1 US 2003192573A1
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US
United States
Prior art keywords
handle
deck
floor
force
machine
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.)
Abandoned
Application number
US10/124,438
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English (en)
Inventor
Loi Tran
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.)
CASTLE ROCK INDUSTRIES Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US10/124,438 priority Critical patent/US20030192573A1/en
Assigned to WINDSOR INDUSTRIES, INC. reassignment WINDSOR INDUSTRIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TRAN, LOI
Priority to EP03252337A priority patent/EP1354548A3/de
Priority to JP2003111964A priority patent/JP2004000561A/ja
Publication of US20030192573A1 publication Critical patent/US20030192573A1/en
Assigned to CASTLE ROCK INDUSTRIES, INC. reassignment CASTLE ROCK INDUSTRIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WINDSOR INDUSTRIES, INC.
Abandoned legal-status Critical Current

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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
    • A47L11/40—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
    • 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
    • A47L11/4075—Handles; levers

Definitions

  • the present invention relates generally to a floor care machine, and in particular to a floor care machine which automatically maintains a substantially even pressure on the floor by a floor care element attached to the machine.
  • weight control is important in controlling the pressure applied to the floor surface and in controlling the amperage draw of the motor of the floor care machine.
  • weight control has been generally accomplished by a floor care machine operator using a fixed handle on the floor care machine to manually determine the amount of pressure being applied to various floor areas. In particular, the operator controlled the floor care element pressure by lifting or pushing on the handle.
  • the present invention is a floor care machine that provides a coupling or a handle link between the floor care machine body and a handle apparatus which is pivotally mounted to the body.
  • the handle link is part of a force generating system having a resilient compressible component (e.g., a compression spring) along the direction of the length of the handle apparatus, wherein the compressible component and the handle link cooperate for urging the body (or deck) of the floor care machine to pivot about the axis of a first set of wheels and thereby bias the front of the deck upwardly.
  • the forces for urging the deck to pivot are used to counter balance opposing pivotal forces caused by the weight of the deck and the floor suction forces generated by the rotation of a floor care element that rotationally contacts the floor for administering the desired floor care when the machine is operating.
  • FIG. 1 shows an exterior perspective view of the floor care machine of the present invention
  • FIG. 2 shows a side view of the floor care machine
  • FIG. 3 shows a partially exploded view of the floor care machine thereby illustrating internal components.
  • the floor care machine 50 generally includes a body portion or deck 54 adapted to be moved along a floor 58 (FIG. 2), and, attached to the deck is a floor care element 62 including, e.g., a polishing pad, a brush, a burnishing pad, a sanding disk, a waxing pad, a floor scouring element, or the like which contacts the floor with a rotational motion when the floor care machine 50 is operable. Additionally, the deck 54 has attached thereto a handle apparatus 64 for guiding and controlling the deck 54 .
  • a handle apparatus 64 for guiding and controlling the deck 54 .
  • the handle apparatus 64 is pivotally attached to the deck 54 at various locations on the deck (as will be described below) so that the handle apparatus can, e.g., pivot between (i) operating positions (wherein the below described handle 68 is generally within a range of 30 to 60 degrees from the horizontal but can be outside that range), and (ii) a transport position (wherein the handle 68 is substantially vertical).
  • an assembly or section 70 (FIG. 1, also denoted herein as an “attachment assembly” and “counter force assembly”) for both: (i) pivotally attaching the handle apparatus 64 to the deck 54 , and (ii) providing a force generating system 72 (or simply force system) for inducing a force which is a counter pivot force to the gravitational and floor suction forces that are generated generally forward of the wheels 108 during operation of the floor care machine 50 , wherein these latter two forces urge at least the deck 54 and the floor care element 62 to pivot about the rotational axis of the wheels 108 in a counterclockwise direction in the orientation of FIG. 2.
  • the force system 72 includes:
  • a force generating device 74 (FIG. 1) that is generally an extension of the handle 68 length further toward the deck 54 .
  • the force generating device 74 includes portions, e.g., a compressible resilient component therein for generating forces in the direction of the handle length (e.g., along the axis 118 of FIG. 2 as described hereinbelow) that are used to counter balance the weight of the deck 54 and floor suction forces induced by the rotation of the floor care element 62 ; and
  • the deck 54 also includes a housing 78 which substantially contains the floor care element 62 .
  • the housing 78 includes a sloping platform 82 having a downwardly extending skirt 84 about its perimeter, wherein the skirt includes a first skirt portion 86 surrounding the floor care element 62 and a second skirt portion 88 extending rearwardly, e.g., for attaching the handle apparatus 64 thereto (FIG. 3), wherein this second skirt portion includes paired planar sides ( 88 a L , 88 a R ), ( 88 b L , 88 b R ) and a rear skirting 88 c (e.g., FIG. 3).
  • a motor 90 is mounted at the center of and generally above the platform 82 .
  • Floor care element 62 is operatively connected to motor 90 for rotation thereby and within housing 78 .
  • the deck 54 further includes a substantially inverted cup-shaped housing or motor shroud 94 received on housing 78 for encasing motor 90 .
  • the housing 94 generally includes a cylindrical shaped portion 98 and a generally box shaped portion 102 .
  • Portion 102 includes a generally closed top 106 , a generally open bottom for receipt and mating on platform 82 .
  • the floor care machine 50 further includes a first set of wheels 108 having a rotation axis located intermediate between the motor 90 and a second set of wheels 110 .
  • the first set of wheels 108 is generally at a level equal to or slightly lower than the level of floor care element 62 .
  • the front two-thirds of the floor care element 62 i.e., from the 8 o'clock to 4 o'clock position thereof
  • engages the floor surface 58 when the floor care element 62 is rotated by motor 90 more preferably substantially the entire side of floor care element 62 facing the floor 58 engages or contacts the floor.
  • the wheels 108 are rotatably secured to the skirt 84 of the housing 78 .
  • the counter force assembly 70 For attaching the handle apparatus 64 to the deck 54 , the counter force assembly 70 includes mounts 116 that extend from the center axis 118 (FIG. 3) of the handle apparatus 64 , and span the rear skirting 88 c. The mounts 116 are pivotally secured to the deck 54 via an axle 120 (FIG. 3) that is provided through the planar skirting sides 88 b L and 88 b R and additionally through an axle opening 122 in each mount 116 .
  • the counter force assembly 70 includes force system 72 which, in turn, includes the force generating device 74 that is generally provided along center axis 118 and below the handle 68 (FIG. 1). In particular, the force generating device 74 includes adjacent lower handle sides 130 (FIG.
  • each of the lower handle sides 130 has a guide slot 152 extending longitudinally from just below the brackets 146 and toward the end cap halves 142 for approximately 1 ⁇ 3 of the length of the cylindrical chamber 136 in the direction of the center axis 118 . Also, in the region 158 (FIG.
  • each of the lower handle sides 130 provides for the cylindrical chamber 136 to have a larger radius than the lower portion 160 of the cylindrical chamber 136 (FIG. 2) below the regions 158 .
  • the lower end of the handle 68 is secured within the enlarged radius portion provided by the two regions 158 when these regions are secured together by anyone of various securing devices such as bolt assembly 164 (FIG. 3).
  • the bolt assembly 164 secures the adjacent lower handle sides 130 with the handle 68 by remaining positioned in the bolt holes 168 , 172 , and 176 .
  • a compression block 186 for compressing the spring 182 within the lower portion 160 .
  • the compression block 186 has a diameter that may be only sufficiently smaller than the diameter of the lower portion 160 so that the compression block can freely slide therein.
  • the compression block 186 is slidably secured to the guide slots 152 by bolt assembly 190 (FIG. 3) also included in the force generating device 74 , wherein bolt shaft 194 and sleeve 198 of this bolt assembly securely span both guide slots 152 and the bolt hole 204 of the compression block 186 .
  • a first end portion 208 (via bolt holes 212 ) of the handle link 76 , wherein the opposite end 220 of the handle link pivotally attaches to the deck 54 as will be described hereinbelow.
  • side flanges 226 and the cross member 230 of the handle link 76 fit over the lower portion 160 .
  • the end 220 is pivotally attached to the deck 54 (by pin subassembly 236 having components identified by the same label) within a raised enclosure 244 of the deck.
  • the operator changes the angle of the handle apparatus 64 relative to the horizontal, such a change will induce a linear movement of the bolt assembly 190 (and also the spring 182 and compression block 186 ) within the lower portion 160 , and there will be a responsive movement by the handle link 76 which will cause the pressure exerted by the rotating floor care element 62 to at least temporarily change due to a pivoting force of the deck 54 about the axle 120 .
  • a spring 182 requiring very high forces for compressing will cause the handle link 54 to move more similarly to having its end 208 remain in a constant pivot position along the axis 118 and thus any angular change (relative to the horizontal) between the handle apparatus 64 and the deck 54 will be substantially fully communicated between these two assemblies.
  • spring 182 requires very small forces for compression, then an angular change (relative to the horizontal) between the handle apparatus 64 and the deck 54 will for the most part not be communicated from one of these two assemblies to the other.
  • the responsiveness of the floor care machine 50 to angular changes between the handle apparatus 64 and the deck 54 can be changed.
  • the collection of components for the latch mechanism includes a torsion spring 254 (FIG. 3) disposed on the pin subassembly 236 for biasing the handle link 76 (and accordingly, the handle 68 ) to pivot clockwise (in the orientation of FIG. 2) about this pin subassembly toward a position for operating the floor care machine 50 rather than storing it.
  • the handle apparatus 64 when storing the floor care machine 50 , the handle apparatus 64 is rotated to a substantially vertical position by overcoming the bias of the torsion spring 254 and causing the latching mechanism to secure the handle apparatus 64 in the substantially vertical position.
  • the collection of components for the latch mechanism includes a latch 258 (FIG. 3) pivotally provided on the pin subassembly 236 and within the raised enclosure 244 for receiving a latch striker 262 provided on the end of the handle apparatus 64 opposite from the grip 66 . Note that the latch 258 and the latch striker 262 cooperate to secure the handle apparatus 64 in a substantially vertical position for storing the floor care machine 50 .
  • the wheels 110 are positioned at a level slightly above the level of the floor care element 62 .
  • the wheels 110 are in the range of 1 ⁇ 2 to 3 ⁇ 4 of an inch above the level of wheels 108 .
  • the force system 72 may induce pivoting forces at the axle 120 that: (a) are counter pivot forces to the gravitational and floor suction forces which the deck 54 exerts about the axle 120 , and (b) reduce the possibility of (or the degree to which) the floor care element 62 unevenly or differently contacts the floor when, e.g., undulations in the floor 58 are encountered, and/or different handle apparatus 64 orientations are used by different floor care machine operators.
  • both operators can cause the floor care element 62 to exert substantially the same pressure on the floor 58 during operation of the floor care machine 50 .
  • the spring 182 (or other compressible component) must be matched to the weight and suction forces generated by the deck 54 . In general, for many springs 182 there is a non-trivial range of angles relative to the horizontal wherein there is only a slight variation in the linear force generated by the spring 182 .
  • such a range can correspond to the handle apparatus 64 varying between 35 degrees to 50 degrees from horizontal (i.e., counter clockwise in FIG. 2).
  • the linear force generated by the spring 182 may commence to vary noticeably, and such variation can be beneficial in that an operator can then explicitly cause the floor care element 62 to vary its pressure on the floor 58 to correspond to different floor conditions such as, e.g., exceptionally soiled areas of the floor 58 .
  • the latch striker 262 is disengaged from the latch 258 allowing handle apparatus 64 , including handle 68 and the force generating portions 74 , such as the compression spring 182 , to be pivotal with respect to the deck 54 about pivot pin subassembly 236 and axle 120 .
  • torsion spring 254 biases the handle apparatus 64 from a substantially vertical position and towards an angled position (e.g., 45 degrees) with respect to horizontal.
  • handle apparatus 64 When the handle apparatus 64 is lowered into its operating position as shown in FIG. 2, handle apparatus 64 creates a load on the spring 182 . This load or force translates into a clockwise pivot force on the wheels 108 (in the orientation of FIG. 2) so that there is a downward force to the rear of platform 82 which, in turn, causes an upward lift to the front of platform 82 .
  • deck 54 will pivot about wheels 108 such that the forward portion of deck 54 and of floor care element 62 is raised above the floor 58 since there is no floor suction force being provided at the front of the floor care machine 50 .
  • an operator can then tilt the floor care machine 50 back so that it can be moved on both sets of wheels 108 and 110 between, e.g., different floor areas and/or to/from storage.
  • the wheels 110 of the floor care machine 50 perform a dual function. First, they limit the amount of upward movement of the front of floor care element 62 under the bias of the force generating portions 74 and thus insure that a partial vacuum is created when floor care element 62 is initially rotated to create the suction effect for pulling the front of floor care element 62 downward. Secondly, the wheels 110 serve as transport wheels when floor care machine 50 is being moved between locations.

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  • Handcart (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
US10/124,438 2002-04-16 2002-04-16 Floor care machine with counter acting force Abandoned US20030192573A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/124,438 US20030192573A1 (en) 2002-04-16 2002-04-16 Floor care machine with counter acting force
EP03252337A EP1354548A3 (de) 2002-04-16 2003-04-12 Bodenpflegegerät mit einer Gegenkraft
JP2003111964A JP2004000561A (ja) 2002-04-16 2003-04-16 反動作用力を有する床手入れ機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/124,438 US20030192573A1 (en) 2002-04-16 2002-04-16 Floor care machine with counter acting force

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US20030192573A1 true US20030192573A1 (en) 2003-10-16

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EP (1) EP1354548A3 (de)
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Cited By (6)

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Publication number Priority date Publication date Assignee Title
US20070094821A1 (en) * 2005-09-29 2007-05-03 Pearl Abrasive Company Wheel assembly for floor treatment machine
US20100251513A1 (en) * 2009-04-06 2010-10-07 Mark Pryor Wheel Set Attachment for Floor Maintenance Equipment
US20140360740A1 (en) * 2012-01-23 2014-12-11 Husqvarna Ab Walk behind power equipment handle height adjuster
US20210076894A1 (en) * 2018-04-27 2021-03-18 Numatic International Limited Floor treatment machine
CN113057526A (zh) * 2021-03-26 2021-07-02 杭州绯弘电子商务有限公司 一种带有地板保护功能的打蜡机
US20230346188A1 (en) * 2020-07-22 2023-11-02 I-Mop Gmbh Floor-cleaning appliance, in particular a floor scrubber, having improved manoeuvring properties

Families Citing this family (3)

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SE529373C2 (sv) * 2006-05-05 2007-07-17 Superclean Scandinavia Ab Anordning vid städmaskin
DE102007045618A1 (de) * 2007-09-17 2009-03-19 Alfred Kärcher Gmbh & Co. Kg Bodenreinigungsgerät
DE102015121733B4 (de) * 2015-12-14 2022-04-28 Vorwerk & Co. Interholding Gmbh Haushaltsgerät, insbesondere Vorsatzgerät eines Staubsaugers

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EP1354548A2 (de) 2003-10-22
EP1354548A3 (de) 2005-03-02

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