EP0403077B1 - Floor cleaning device - Google Patents
Floor cleaning device Download PDFInfo
- Publication number
- EP0403077B1 EP0403077B1 EP19900305151 EP90305151A EP0403077B1 EP 0403077 B1 EP0403077 B1 EP 0403077B1 EP 19900305151 EP19900305151 EP 19900305151 EP 90305151 A EP90305151 A EP 90305151A EP 0403077 B1 EP0403077 B1 EP 0403077B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning device
- housing
- cleaning
- disc
- sealing means
- 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
Links
Images
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
- A47L11/4036—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
- A47L11/02—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
-
- 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
-
- 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
- A47L11/4077—Skirts or splash guards
Definitions
- This invention relates to a floor cleaning device and in particular such a device comprising a plurality e.g. three, cleaning heads, each mounted for rotation about a substantially vertical axis.
- each cleaning head is mounted for rotation below a substantially horizontal plate and driven through a belt and pulley system mounted above the plate.
- a cover bowl is positioned over the system and the plate. The provision of this cover bowl is expensive and adds weight to the device.
- EP-A-0314926 discloses a cleaning device similar to that shown in Figure 1 of the accompanying drawings, but the rotatable cover bowl is inverted and the cleaning heads are mounted for rotation beneath the bowl.
- the drive system is positioned within the bowl and covered by a flat plate fixed to the bowl.
- the bowl and cover plate is expensive and adds weight.
- US-A-3169292 discloses a cleaning device having a horizontal plate fixed by spacers and bolts to a housing. Rotatable cleaning heads are mounted below the plate and a drive mechanism for the heads is mounted above the plate.
- the plate extends to and is fixed to the interior of the housing thus preventing the ingress of dirt etc to the drive mechanism.
- the plate is fixed there will be a considerable torque reaction created by the rotating cleaning heads as they contact the floor thus making it very difficult for an operator to control the device.
- GB-A-655726 discloses a cleaning device having a horizontal plate fixed to the housing and having three holes through which the cleaning heads protrude. Thus the ingress of dirt to the drive mechanism is prevented but since the plate is fixed the same operator control problem as described above in relation to US-A-3169292 will occur.
- a floor cleaning device comprises a plurality of cleaning heads mounted for rotation below a substantially horizontal plate, drive means located above the plate for causing rotation of the cleaning head, a housing covering the cleaning head, the plate and the drive means, characterised in that the horizontal plate comprises a disc supported to be freely rotatable about a central vertical axis and sealing means is located between the housing and the edge of the rotatable disc for preventing the ingress of unwanted matter to the drive means.
- the rotatable disc may have three cleaning heads each mounted thereon for rotation about a vertical axis.
- the mounting of the disc so as to be freely rotatable about a central vertical axis thereby substantially or completely offsets the torque reaction arising from the cleaning heads in use.
- the drive means preferably comprises a belt and pulley system which driveably connects an electric motor mounted above the housing to the or each cleaning head.
- the sealing means may be positioned on the plate or on the housing to form a barrier to prevent the ingress of unwanted matter such as water or dirt to the belt and pulley system.
- the known floor cleaning device comprises a housing 1, a disc 2 on which are mounted three rotating cleaning heads 3 (only one shown) each connected by a pulley and belt drive system to a motor 4.
- the motor 4 drives a central pulley 5 through a vertical shaft 6 which in turn drives three pulleys 7 (only one shown), each connected to a cleaning head 3 through a belt 8.
- Each pulley 7 is mounted on a vertical spindle 9 by means of a bearing 10 secured to the disc 2 by fixing bolts 14.
- the spindle 9 is supported at its upper end 12 by an internal bowl 11.
- Each spindle 9 extends downward through the disc 2 and an end fitting 13 allows a cleaning head 3 to be mounted at its lower extremity.
- the internal bowl 11 is mounted via a bearing 15 on a sleeve 16 separate from but coaxially located with respect to the central drive shaft 6.
- the bowl extends and is connected to the peripheral edge 17 of the disc 2 and thereby encloses all the pulleys 5 and 7 and the drive belt 8.
- the disc 2 and internal bowl 11 are freely rotatable on the sleeve 16 thus eliminating the torque reaction which arises by contact between the cleaning heads 3 and the floor 20.
- a fender 19 is provided at the side 21 of the housing 1.
- the cleaning device in accordance with the invention is somewhat similar to that shown in Figure 1 and the same reference numerals have been used.
- the side 21 of the housing 1 is formed with a radially inwardly extending ridge 23 which is positioned vertically above, close to and in overlapping relationship with the peripheral edge 17 of the disc 2.
- This forms a barrier preventing water, dirt and other matter from entering the interior space enclosed by the housing 1 between the edge of the disc 2 and the side of the housing 1 and furthermore from affecting the belt and pulley system located above the disc 2.
- the radially outer portion of the internal bowl 11 becomes superfluous and is replaced by a disc-shaped member 28 or three-armed spider (not shown) freely rotatable on the sleeve 16 and supporting the upper ends 12 of the spindles 9.
- the radially inwardly extending ridge 23 is shown in more detail. It may be formed by a suitable shaping operation e.g. if the housing is of metal, by spinning, or if plastic, by moulding.
- FIGs 4 and 5 Alternative forms of the sealing means are shown in Figures 4 and 5.
- the peripheral edge 17 of the disc is provided with a radially outward extending row of bristles 24 located in a mounting 26 on the underside of the disc.
- the bristles contact the radially inner surface of the housing 1 thereby forming a barrier.
- the row of bristles is replaced by a single elastomeric seal 25 in the form of an annular ring, the radially inner part of the ring being located in a suitable mounting 27 and the radially outer edge rubbing against the radially inner surface of the housing 1.
Landscapes
- Nozzles For Electric Vacuum Cleaners (AREA)
Description
- This invention relates to a floor cleaning device and in particular such a device comprising a plurality e.g. three, cleaning heads, each mounted for rotation about a substantially vertical axis.
- In a known form of cleaning device (illustrated in Figure 1), each cleaning head is mounted for rotation below a substantially horizontal plate and driven through a belt and pulley system mounted above the plate. In order to prevent the ingress of water, dirt and other matter to the drive system a cover bowl is positioned over the system and the plate. The provision of this cover bowl is expensive and adds weight to the device.
- EP-A-0314926 discloses a cleaning device similar to that shown in Figure 1 of the accompanying drawings, but the rotatable cover bowl is inverted and the cleaning heads are mounted for rotation beneath the bowl. The drive system is positioned within the bowl and covered by a flat plate fixed to the bowl. The bowl and cover plate is expensive and adds weight.
- US-A-3169292 discloses a cleaning device having a horizontal plate fixed by spacers and bolts to a housing. Rotatable cleaning heads are mounted below the plate and a drive mechanism for the heads is mounted above the plate. In the embodiment shown in Figure 3 of this prior publication the plate extends to and is fixed to the interior of the housing thus preventing the ingress of dirt etc to the drive mechanism. However because the plate is fixed there will be a considerable torque reaction created by the rotating cleaning heads as they contact the floor thus making it very difficult for an operator to control the device.
- GB-A-655726 discloses a cleaning device having a horizontal plate fixed to the housing and having three holes through which the cleaning heads protrude. Thus the ingress of dirt to the drive mechanism is prevented but since the plate is fixed the same operator control problem as described above in relation to US-A-3169292 will occur.
- It is a general object of the invention to provide a less expensive alternative means to prevent the ingress of water and dirt to the drive mechanism mounted above a horizontal plate.
- In accordance with the invention a floor cleaning device comprises a plurality of cleaning heads mounted for rotation below a substantially horizontal plate, drive means located above the plate for causing rotation of the cleaning head, a housing covering the cleaning head, the plate and the drive means, characterised in that the horizontal plate comprises a disc supported to be freely rotatable about a central vertical axis and sealing means is located between the housing and the edge of the rotatable disc for preventing the ingress of unwanted matter to the drive means.
- The rotatable disc may have three cleaning heads each mounted thereon for rotation about a vertical axis. The mounting of the disc so as to be freely rotatable about a central vertical axis thereby substantially or completely offsets the torque reaction arising from the cleaning heads in use.
- The drive means preferably comprises a belt and pulley system which driveably connects an electric motor mounted above the housing to the or each cleaning head.
- The sealing means may be positioned on the plate or on the housing to form a barrier to prevent the ingress of unwanted matter such as water or dirt to the belt and pulley system.
- Three embodiments of the invention will now be described by way of example only with reference to the accompanying drawings of which:-
- Figure 1
- shows a partial cross-section through part of a known floor cleaning device,
- Figure 2
- shows a similar view to that shown in Figure 1 of a floor cleaning device according to a first embodiment of the invention,
- Figure 3
- shows on an enlarged scale the sealing means of the device shown in Figure 2,
- Figures 4 and 5
- show on enlarged scales alternative sealing means to that illustrated in Figure 3.
- As shown in Figure 1 the known floor cleaning device comprises a housing 1, a disc 2 on which are mounted three rotating cleaning heads 3 (only one shown) each connected by a pulley and belt drive system to a
motor 4. - As can be seen in Figure 1 the
motor 4 drives acentral pulley 5 through avertical shaft 6 which in turn drives three pulleys 7 (only one shown), each connected to acleaning head 3 through abelt 8. Eachpulley 7 is mounted on avertical spindle 9 by means of abearing 10 secured to the disc 2 by fixingbolts 14. Thespindle 9 is supported at itsupper end 12 by aninternal bowl 11. Eachspindle 9 extends downward through the disc 2 and anend fitting 13 allows acleaning head 3 to be mounted at its lower extremity. - The
internal bowl 11 is mounted via abearing 15 on asleeve 16 separate from but coaxially located with respect to thecentral drive shaft 6. The bowl extends and is connected to theperipheral edge 17 of the disc 2 and thereby encloses all thepulleys drive belt 8. The disc 2 andinternal bowl 11 are freely rotatable on thesleeve 16 thus eliminating the torque reaction which arises by contact between thecleaning heads 3 and thefloor 20. Afender 19 is provided at theside 21 of the housing 1. - As shown in Figures 2 and 3 the cleaning device in accordance with the invention is somewhat similar to that shown in Figure 1 and the same reference numerals have been used. However in this construction the
side 21 of the housing 1 is formed with a radially inwardly extendingridge 23 which is positioned vertically above, close to and in overlapping relationship with theperipheral edge 17 of the disc 2. This forms a barrier preventing water, dirt and other matter from entering the interior space enclosed by the housing 1 between the edge of the disc 2 and the side of the housing 1 and furthermore from affecting the belt and pulley system located above the disc 2. Thus the radially outer portion of theinternal bowl 11 becomes superfluous and is replaced by a disc-shaped member 28 or three-armed spider (not shown) freely rotatable on thesleeve 16 and supporting theupper ends 12 of thespindles 9. - In Figure 3 the radially inwardly extending
ridge 23 is shown in more detail. It may be formed by a suitable shaping operation e.g. if the housing is of metal, by spinning, or if plastic, by moulding. - Alternative forms of the sealing means are shown in Figures 4 and 5. In Figure 4 the
peripheral edge 17 of the disc is provided with a radially outward extending row ofbristles 24 located in amounting 26 on the underside of the disc. The bristles contact the radially inner surface of the housing 1 thereby forming a barrier. In the construc-tion shown in Figure 5 the row of bristles is replaced by a singleelastomeric seal 25 in the form of an annular ring, the radially inner part of the ring being located in a suitable mounting 27 and the radially outer edge rubbing against the radially inner surface of the housing 1.
Claims (10)
- A floor cleaning device comprising a plurality of cleaning heads (3) mounted for rotation below a substantially horizontal plate (2), drive means (5,7) located above the plate (2) for causing rotation of the cleaning heads (3), a housing (1) covering the cleaning heads (3), the plate (2) and the drive means (5,7), characterised in that the horizontal plate (2) comprises a disc supported to be freely rotatable about a central vertical axis, and sealing means (23;24;25) is located between the housing (1) and the edge of the rotatable disc (2) for preventing the ingress of unwanted matter to the drive means (5,7).
- A cleaning device according to Claim 1 characterised in that that three cleaning heads (3) are mounted on the rotatable disc (2).
- A cleaning device according to Claim 1 or Claim 2 characterised in that the drive means (5,7) driveably connects the cleaning head (3) to an electric motor (4) mounted above the housing (1).
- A cleaning device according to Claim 3, characterised in that the drive means (5,7) comprises a belt and pulley system.
- A cleaning device according to any one of the preceding claims, characterised in that the sealing means (24;25) is positioned upon the rotatable disc (2).
- A cleaning device according to Claim 5 characterised in that the sealing means comprises a row of bristles (24) mounted on the edge (17) of the rotatable disc (2) and extending outwards to contact the housing (1).
- A cleaning device according to Claim 5 characterised in that the sealing means comprises an annular elastomeric ring (25) positioned on the edge (17) of the rotatable disc (2) and extending outwards to contact the housing (1).
- A cleaning device according to any one of the preceding claims characterised in that the sealing means (23) is positioned on the housing (1).
- A cleaning device according to Claim 8 characterised in that the sealing means comprises an inwardly extending ridge (23) positioned vertically above, close to, and in overlapping relationship with the edge (17) of the rotatable disc (2).
- A cleaning device according to any one of the preceding claims characterised in that a member (28) or spider is mounted to rotate on a central vertical shaft (6), the cleaning heads (3) are each mounted to rotate on respective vertical spindles (9) connected at their upper ends (12) to the member (28) or spider, the spindles (9) extending downwards through the disc (2).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8913756 | 1989-06-15 | ||
GB898913756A GB8913756D0 (en) | 1989-06-15 | 1989-06-15 | Floor cleaning device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0403077A1 EP0403077A1 (en) | 1990-12-19 |
EP0403077B1 true EP0403077B1 (en) | 1993-12-01 |
Family
ID=10658481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900305151 Expired - Lifetime EP0403077B1 (en) | 1989-06-15 | 1990-05-14 | Floor cleaning device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0403077B1 (en) |
DE (1) | DE69004864T2 (en) |
GB (1) | GB8913756D0 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19522019C2 (en) * | 1995-06-17 | 1997-04-03 | Gansow Maschbau Gmbh Co Kg | Motor-driven rotating plate with cleaning tools for a floor cleaning machine |
DE19711552C1 (en) * | 1997-03-20 | 1998-09-24 | Gansow Maschbau Gmbh Co Kg | Motor-driven rotating plate with cleaning tools for a floor cleaning machine |
CN104757913B (en) * | 2015-05-04 | 2017-07-07 | 许春虎 | A kind of ground scraping cart |
SE542032C2 (en) * | 2018-01-18 | 2020-02-11 | Scanmaskin Sverige Ab | A floor grinding machine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB657726A (en) * | 1949-03-11 | 1951-09-26 | George William Patchett | Improvements in or relating to floor polishing machines |
US2986756A (en) * | 1956-07-20 | 1961-06-06 | Electrolux Ab | Splash guard for domestic appliance |
US3169262A (en) * | 1964-01-07 | 1965-02-16 | Electrolux Corp | Floor polisher with double-toothed belt drive |
IT1216703B (en) * | 1987-11-06 | 1990-03-08 | Dulevo Spa | SCRAPING DEVICE FOR FLOOR AND SURFACE CLEANING MACHINES. |
-
1989
- 1989-06-15 GB GB898913756A patent/GB8913756D0/en active Pending
-
1990
- 1990-05-14 EP EP19900305151 patent/EP0403077B1/en not_active Expired - Lifetime
- 1990-05-14 DE DE1990604864 patent/DE69004864T2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69004864T2 (en) | 1994-05-11 |
GB8913756D0 (en) | 1989-08-02 |
EP0403077A1 (en) | 1990-12-19 |
DE69004864D1 (en) | 1994-01-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0295306B1 (en) | First arm structure of horizontally articulated robot | |
US4461367A (en) | Drive train for a steerable drive wheel of a vehicle | |
US6227697B1 (en) | Mixer including gearing for multiple mixing tools having resilient mountings | |
US20060026781A1 (en) | Floor treating machine comprising individually driven discs | |
EP0403077B1 (en) | Floor cleaning device | |
US4073095A (en) | Centrifugal drum polishing machine | |
KR970014491A (en) | Method and apparatus for rotating substrate | |
DK0619979T3 (en) | Floor treating machine | |
EP0521481B1 (en) | Centrifugal feeder | |
US5134893A (en) | Adjustable counterweight assembly | |
EP0816024B1 (en) | Industrial robot | |
EP0052582B1 (en) | Kneading machine | |
JPH0347997B2 (en) | ||
GB2087437A (en) | Washing apparatus | |
US4853566A (en) | Apparatus for ventilating an electric motor for textile spinning mill machines | |
GB2274976A (en) | Stair cleaning device | |
US5036563A (en) | Rotational elevator rope cleaning device | |
JP2535136B2 (en) | Horizontal bearing structure | |
JP3231733U (en) | Turntable device | |
JP4159065B2 (en) | Mixer with anti-vibration mechanism | |
IE903552A1 (en) | Floor polishing machine | |
JPH0226955Y2 (en) | ||
US5293689A (en) | Method and apparatus for sharpening a cutting blade of a rotary shaver | |
CN217013890U (en) | Protection structure of sweeper drive wheel motor and sweeper | |
CN214543896U (en) | Electric machine with a stator housing and a rotor shaft |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT DE ES FR GB IT NL SE |
|
17P | Request for examination filed |
Effective date: 19901224 |
|
17Q | First examination report despatched |
Effective date: 19920609 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE GB |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE GB |
|
REF | Corresponds to: |
Ref document number: 69004864 Country of ref document: DE Date of ref document: 19940113 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19980713 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19991111 Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000301 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000514 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20000514 |