EP0294058A2 - Brosse de nettoyage - Google Patents

Brosse de nettoyage Download PDF

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Publication number
EP0294058A2
EP0294058A2 EP88304459A EP88304459A EP0294058A2 EP 0294058 A2 EP0294058 A2 EP 0294058A2 EP 88304459 A EP88304459 A EP 88304459A EP 88304459 A EP88304459 A EP 88304459A EP 0294058 A2 EP0294058 A2 EP 0294058A2
Authority
EP
European Patent Office
Prior art keywords
brush
cleaning
motor
fluid
cleaning brush
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.)
Withdrawn
Application number
EP88304459A
Other languages
German (de)
English (en)
Other versions
EP0294058A3 (fr
Inventor
John Ernest Oretti
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.)
Bayly Design Assoc Pty Ltd
Original Assignee
Bayly Design Assoc Pty Ltd
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 Bayly Design Assoc Pty Ltd filed Critical Bayly Design Assoc Pty Ltd
Publication of EP0294058A2 publication Critical patent/EP0294058A2/fr
Publication of EP0294058A3 publication Critical patent/EP0294058A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/02—Brushes with driven brush bodies or carriers power-driven carriers
    • A46B13/04—Brushes with driven brush bodies or carriers power-driven carriers with reservoir or other means for supplying substances
    • A46B13/06—Brushes with driven brush bodies or carriers power-driven carriers with reservoir or other means for supplying substances with brush driven by the supplied medium

Definitions

  • This invention is concerned with cleaning brushes of the kind which are connectable to a source of water under pressure.
  • the invention is applicable to such brushes which have means for storing and dispensing a detergent or other cleaning agent. It will be convenient to hereinafter describe the invention with particular reference to the latter type of brush, but the invention has other applications.
  • Cleaning brushes of the foregoing kind commonly have a movable head which carries the bristles or other brush elements. That head may be arranged to rotate or vibrate as a consequence of passage of water through the brush.
  • Rotating head brushes generally involve the use of a pelton wheel or the like to translate the movement of the water into brush rotation, but such drive means is unable to generate sufficient torque to cope with all circumstances of use.
  • the brush head may stop rotating, or at least turn at a slow speed, when it is pressed against a surface to be cleaned.
  • Vibrating head brushes are also inefficient because at least some if not all of the vibratory movement is transferred to the body of the brush when the head is pressed against a surface to be cleaned.
  • a brush according to the invention is characterised in that the movable head is driven by a water powered gear motor through a positive drive connection.
  • that brush is further characterised in that the water supply to the cleaning head and any other area of the brush contaminated by cleaning agent is separated from the contaminated area by an air gap. The arrangement is such that in the event of reverse syphonage air will be drawn back into the water supply conduit rather than cleaning agent or water contaminated by such an agent.
  • the cleaning brush 1 shown in the drawings includes a hollow main body 2 which may be moulded from a plastics material.
  • that body has an upper wall 3, a lower wall 4, and surrounding side walls 5.
  • the body shown is of substantially rectangular peripheral shape but other shapes could be adopted.
  • An elongate handle 6 extends from a side wall at one end of the body 2, and that handle 6 serves to carry a water supply conduit 7, as hereinafter described.
  • Two rotatable brush heads 8 are mounted on the lower wall 4 of the body 2 and in the preferred form of the invention a fixed brush section 9 surrounds the movable brush heads 8.
  • the two movable brush heads 8 are each rotatably mounted on the body lower wall 4 adjacent a respective end of the body 2.
  • Each movable head 8 is preferably formed of two parts - a carrier 10 and a replaceable part 11.
  • the carrier 10 includes a circular disc-like section 12 and an axle section 13 which projects axially from the disc section 12 and is rotatably mounted in the lower wall 4 of the brush body 2.
  • a circular hub 14 projects axially from the side of the disc section 12 opposite to that from which the axle 13 projects.
  • the replaceable part may include an annular section 15 formed of a plastics material, for example, or other relatively rigid material, and at least one series of bristles 16 supported by and projecting from an outer edge portion of that section 15.
  • the term "bristles” is to be understood as embracing any fibre-like material, which may be a natural or synthetic material and which is suitable for use as the surface cleaning (engaging) components of a brush.
  • the annular section 15 is preferably removably attached to the disc section 12 of the carrier 10 by snap engagement over the hub 14 of that section.
  • An outwardly directed lug 17 formed on the hub 14 may secure the annular section 15 to the hub 14.
  • connection between the hub 14 and annular sections 15 is such that they are positively retained against relative rotation. That may be achieved by providing at least one driving lug on the annular section 15 which engages within a corresponding hole or recess (not shown) provided in the hub 14.
  • the lug 17 which locks the annular section 15 to the hub 14 can serve to fix the two components against relative rotation. Obviously, the locations of the lug and hole or recess could be reversed.
  • the fixed brush section 9 may include an array of bristles, as previously defined, attached around the periphery of the body lower wall 4 and projecting therefrom so as to form a substantially continuous skirt about the movable heads 8.
  • the bristles which define the fixed brush section 9 may be angled in the same manner as the bristles 16 of the movable heads 8, and they may project for a slight distance beyond the terminal ends 20 of the movable head bristles 16.
  • Drive means 21 for the movable heads 8 includes a gear motor 22 which, in the embodiment shown, is located within the hollow body 2 of the brush 1. That motor 22 can be of any conventional construction and has a drive shaft 23 which projects through the body lower wall 4.
  • the drive motor 22 of this embodiment is shown clearly in Figures 3 and 4.
  • the drive motor 22 comprises a pair of gear members 24 and 25 which are in meshing engagement with each other.
  • the drive shaft 23 is fixed to rotate with gear member 25.
  • the gear members 24 and 25 are housed within a gear motor housing 26, the body 27 of which is contoured to conform to the configuration of the meshed gears.
  • a cover plate 28 is provided for sealing with the upper edge 29 of the drive motor housing 26.
  • the cover plate 28 has an inlet aperture 30 passing therethrough and water will be introduced into the drive motor 22 through this inlet aperture 30 to drive the motor.
  • the inlet aperture 30 may be closed off by a valve plate 31 as will be more fully described herebelow.
  • the housing 26 has an outlet 32 on the side thereof remote from the inlet aperture 30 and water which has passed between the gear members 24 and 25 will exhaust through this outlet 32.
  • the lower wall 4 of the body 2 defines an upstanding cup shaped wall 33 which is shaped to receive the gear motor housing 26.
  • This cup shaped wall 33 is clearly seen in Figure 5. With the gear motor housing 26 in position within the cup shaped wall 33 a cavity is defined between the outer surface 34 of the housing 26 and the inner surface 35 of the cup shaped wall 33 below the outlet 32 from the housing 26.
  • An outlet passage 36 through the cup shaped wall 33 provides an outlet from this cavity.
  • Operation of the heads 8 is effected by passing water under pressure through the drive motor 22. It is preferred that the water inlet to the motor 22 is valve controlled in a manner such as to permit regulation of the speed of rotation of the movable heads 8.
  • the inlet to the gear motor 22, as previously mentioned, is controlled by a valve which in the embodiment shown comprises a valve plate 31.
  • a cover member 37 is located within the body 2 and is ultra-sonically sealed to the cup shaped wall 33 defining a chamber 38 above the drive motor 22. Water is preferably introduced into that chamber 38 through a tubular member 39 which projects laterally outwards from a side wall of the cover member 37 in a direction towards the aforementioned handle 6.
  • the valve means for controlling passage of water from the chamber 38 to the gear motor 22 includes a valve plate 31 which is rotatable about an axis 40 extending transverse to the body upper wall 3.
  • That valve plate 31 is arranged to control the size of the inlet aperture 30 through the cover plate 28 through which water passes from the chamber 38 to the gear motor, and the size of that opening varies according to the rotational position of the plate 31.
  • An upstanding lug 41 on the cover plate 28 locates in an arcuate slot 42 formed in the valve plate 31. This limits the rotational arc of the cover plate to about 30°.
  • Rotation of the valve plate 31 may be effected through a spindle 43 which is attached to or formed integral with the valve plate 31, and which projects through the body upper wall 3.
  • a suitable hand engageable lever 44 shown in Figure 2 is secured to that spindle 43 external of the body 2 so as to be accessible for hand manipulation.
  • that lever 44 is located within a recess 45 in the external surface of the upper wall 3 so as to be protected against inadvertent engagement during use of the brush 1.
  • Two O-ring seals 46 located on either side of the valve plate 31 seal areas of the plate 31 on the upper 47 and lower surfaces 48 thereof from influence of water pressure.
  • the upper surface 47 of the cover plate is of slightly greater area than the lower surface 48 thereof.
  • water under pressure in the chamber 38 will exert a net downward force on the valve plate 31.
  • the lower surface of the valve plate 31 and the upper surface 49 of the cover plate 28 are both smooth and thus, this net downward force on the valve plate 31 serves to urge the valve plate 31 against the cover plate 28 to thereby form a seal between the two plates, closing off the inlet aperture 30 when the valve plate 31 is in its closed position.
  • the outlet 36 through the cup shaped wall 33 serves as a nozzle to direct exhaust water in a direction substantially parallel to the lower plate 4.
  • This water in use travels as a jet across an air gap 50 and into a cowl 51 formed integrally with the lower wall 4.
  • a sloping surface 52 on the cowl 51 directs the jet through an opening 53 in the lower wall into a cavity 54 between the under surfaces of the lower wall 4 and the upper surface of the forward brush disc section 12.
  • This cavity 54 is clearly seen in Figure 6 of the drawings.
  • a chamber 55 for containing a liquid or other cleaning agent is preferably provided within the brush body 2 at the end portion thereof remote from the handle 6.
  • a removable plug-like cover 56 may be provided to enable selective access to that chamber 55 for filling purposes.
  • the cleaning agent chamber 55 is located directly over the forward movable brush head 8 and an outlet 57 from the chamber is arranged to dispense cleaning agent directly, or substantially so, onto or into that head 8.
  • a portion of a lower wall 59 of the cleaning agent chamber 55 lies in closely spaced relationship to the upper surface of the adjacent brush head 8, and a passage 60 extending into and through that lower wall portion 59 forms the chamber outlet 57.
  • the clearance between the opposed surfaces of that wall portion 59 and the brush head 8 is preferably kept to a minimum for a reason hereinafter made clear.
  • the opening 53 through the lower wall 4 and the outlet 57 from the cleaning agent chamber 55 both lead into the cavity 54 between the forward brush head 8 and the lower wall 4.
  • the brush heads 8 both have at least one flow passage 61 through the hub 14 and, in the case of the forward brush head, this passage provides an outlet from the cavity 54.
  • pressure within this cavity 54 is relatively high as a result of exhaust water entering directly into the cavity 54 from the cowl 51.
  • a lower pressure area will however be adjacent the entrance to the flow passage 61.
  • the reduced pressure area adjacent the flow passage 61 will cause a suction effect and hence cleaning agent to be drawn from the outlet 57 each time the flow passage 61 is brought into registry with the outlet 57.
  • the outlet 57 and flow passage 61 are not in registry, however, the relatively high pressure which otherwise exists within the cavity 54 inhibits movement of cleaning agent out of the outlet 57.
  • the outlet passage 60 of the cleaning agent chamber 55 is preferably valve controlled so as to be capable of being completely closed-off or fully or partially opened.
  • a valve 62 includes a rod-like member 63 which projects into that outlet passage 60 and has a recess 64 therein which can be brought into partial or full registry with that outlet passage 60.
  • the rod-like member 63 is rotatable to effect that registry and for that purpose may project through an end wall 5 of the brush body 2 and have a manually engageable handle or knob 65 attached thereto. That handle or knob 65 is accessible at the outside of the brush body.
  • a valve 62 as referred to above enables control over the quantity of cleaning agent being dispensed from the chamber 55.
  • the rate at which that cleaning agent is being dispensed is controlled by the speed at which the brush heads 8 rotate, and that arises because of the intermittent suction effect which is described above.
  • the speed of rotation of the brush heads 8 is in turn controlled by the adjustable valve 31 of the water inlet chamber 38.
  • the drive shaft 23 is connected to each movable head 8 through a gear train 66 as shown in Figure 7 so as to achieve a positive drive connection between the motor 22 and those heads 8.
  • a drive pinion 67 is secured to or formed integral with the end of the shaft 23 which projects below the body lower wall 4.
  • a driven gear 68 which meshes with that drive pinion 67 may be secured to or formed integral with the disc section 12 of each movable head 8.
  • the water supply system to the gear motor 22 includes the handle 6 and the aforementioned tubular member 39 which projects from the water inlet chamber 38.
  • the handle 6 is tubular and has male connection means 70 at its outer end for connection to a supply conduit. It is preferred that the handle is adjustable relative to the brush body so that its angular disposition can be altered to suit user requirements.
  • the handle may be therefore connected to the brush body through a pivotal joint 71 which enables relative movement of the handle 6 about an axis 72 extending generally transverse to the rotational axes of the rotatable brush heads 8.
  • adjustable clamping or locking means is provided to enable selective use of the handle 6 adjustment facility.
  • means includes cooperable ratchet plates 73 and a clamp nut 74 which is adjustable to hold those plates 73 in engagement and thereby prevent handle adjustment, or alternatively allow separation of those plates and thereby permit handle adjustment.
  • the aforementioned tubular member 39 is preferably connected to a similar member 75 at the outer end portion of the handle 6 through the flexible tube 7. That tube 7 passes through the interior of the handle 6 and also through the pivotal joint 71 so as to bend or flex in accordance with changes in the handle disposition.
  • a flexible guard plate 77 extends over at least one side of the pivotal joint 71 so as to close a space of variable size between the handle 6 and the brush body 2.
  • An end edge 78 of the handle at that joint 71 slides over the plate 77 during adjustment of the handle position.
  • Opposite end portions 79 and 80 of the plate can be located within the handle and the brush body respectively so as to retain the plate 77 against separation from the assembly.
  • a snap-type male connector 70 at the outer end of the handle permits releasable connection with a supply conduit such as a garden hose.
  • a rigid handle extension (not shown) may be provided to permit the length of the handle to be increased to suit requirements. That extension can be snap engaged with the aforementioned connector 70 and may have a similar connector at its outer end.
  • a brush 1 as described has the advantage of positive drive of the movable brush heads 8.
  • the torque applied to those heads by the drive motor will increase automatically as resistance to that rotation increases.
  • a further and important advantage is the manner in which water is delivered to the rotating heads 8, and particularly the part of the brush contaminated by cleaning agent, since that avoids the danger of the cleaning agent being drawn into an associated mains supply as a consequence of reverse syphonage.

Landscapes

  • Brushes (AREA)
EP88304459A 1987-06-02 1988-05-17 Brosse de nettoyage Withdrawn EP0294058A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU225787 1987-06-02
AU2257/87 1987-06-02

Publications (2)

Publication Number Publication Date
EP0294058A2 true EP0294058A2 (fr) 1988-12-07
EP0294058A3 EP0294058A3 (fr) 1989-10-18

Family

ID=3692774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88304459A Withdrawn EP0294058A3 (fr) 1987-06-02 1988-05-17 Brosse de nettoyage

Country Status (2)

Country Link
EP (1) EP0294058A3 (fr)
JP (1) JPS63311907A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109349786A (zh) * 2018-10-23 2019-02-19 华北理工大学 一种充电锅刷
CN110000126A (zh) * 2019-04-26 2019-07-12 西南交通大学 一种清洗装置
WO2019141384A1 (fr) * 2018-01-22 2019-07-25 Alfred Kärcher SE & Co. KG Appareil de nettoyage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744272A (en) * 1950-11-02 1956-05-08 Interstate Engineering Corp Air-driven floor polisher
CH436216A (de) * 1965-09-08 1967-05-31 Freund Josef An eine Wasserleitung anschliessbare Autowaschbürste mit Shampoo-Zuführung
GB1156344A (en) * 1966-07-12 1969-06-25 Franco Salvetti A Rotatable Brush Device particularly for Vehicle Washing
GB1453371A (en) * 1973-04-30 1976-10-20 Kaeser C Device for personal hygiene
EP0012218A1 (fr) * 1978-11-14 1980-06-25 Nuvite Chemical Compounds Corporation Dispositif de nettoyage portatif
US4279051A (en) * 1979-08-15 1981-07-21 Malcolm Elmer L Combination water spray and rotary brush attachment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744272A (en) * 1950-11-02 1956-05-08 Interstate Engineering Corp Air-driven floor polisher
CH436216A (de) * 1965-09-08 1967-05-31 Freund Josef An eine Wasserleitung anschliessbare Autowaschbürste mit Shampoo-Zuführung
GB1156344A (en) * 1966-07-12 1969-06-25 Franco Salvetti A Rotatable Brush Device particularly for Vehicle Washing
GB1453371A (en) * 1973-04-30 1976-10-20 Kaeser C Device for personal hygiene
EP0012218A1 (fr) * 1978-11-14 1980-06-25 Nuvite Chemical Compounds Corporation Dispositif de nettoyage portatif
US4279051A (en) * 1979-08-15 1981-07-21 Malcolm Elmer L Combination water spray and rotary brush attachment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019141384A1 (fr) * 2018-01-22 2019-07-25 Alfred Kärcher SE & Co. KG Appareil de nettoyage
CN109349786A (zh) * 2018-10-23 2019-02-19 华北理工大学 一种充电锅刷
CN110000126A (zh) * 2019-04-26 2019-07-12 西南交通大学 一种清洗装置
CN110000126B (zh) * 2019-04-26 2023-12-26 西南交通大学 一种清洗装置

Also Published As

Publication number Publication date
EP0294058A3 (fr) 1989-10-18
JPS63311907A (ja) 1988-12-20

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