US20060282976A1 - Vacuum Cleaner - Google Patents

Vacuum Cleaner Download PDF

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Publication number
US20060282976A1
US20060282976A1 US11/423,466 US42346606A US2006282976A1 US 20060282976 A1 US20060282976 A1 US 20060282976A1 US 42346606 A US42346606 A US 42346606A US 2006282976 A1 US2006282976 A1 US 2006282976A1
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US
United States
Prior art keywords
sleeve
tubes
vacuum cleaner
tube
cleaner according
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
US11/423,466
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English (en)
Inventor
Ross Richardson
Christopher Henderson
William Edwards
Andrew Sherriff
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.)
Hoover Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34855563&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20060282976(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of US20060282976A1 publication Critical patent/US20060282976A1/en
Assigned to HOOVER LIMITED reassignment HOOVER LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EDWARDS, WILLIAM, RICHARDSON, ROSS, SHERRIFF, ANDREW SINCLAIR
Assigned to HOOVER LIMITED reassignment HOOVER LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HENDERSON, CHRISTOPHER RICHARD
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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • A47L5/32—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with means for connecting a hose
    • 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
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/24—Hoses or pipes; Hose or pipe couplings
    • A47L9/242—Hose or pipe couplings
    • A47L9/244—Hose or pipe couplings for telescopic or extensible hoses or pipes

Definitions

  • the present invention relates to a vacuum cleaner and more particularly to a vacuum cleaner having a telescopic suction nozzle.
  • a vacuum cleaner of the upright type which comprises an upright body pivotally mounted at its lower end to a floor-engaging unit enabling limited rotation of the body forwardly and rearwardly, relative to the floor-engaging unit, about an axis extending transverse of the cleaner.
  • the body houses a motor-driven fan unit which serves to develop suction to draw air in through an inlet in the floor-engaging unit and into a dust-separation unit, mounted to the body of the cleaner.
  • a motor-driven, rotary agitator brush is mounted across the floor-engaging unit, in the air inlet thereof, to beat and sweep the floor in the region of the airflow into the cleaner.
  • the cleaner also comprises a combined handle and suction nozzle unit of elongate form, having an end portion formed as a handle or handgrip and a tubular portion extending from the handle to form a suction nozzle: the free end of the tubular portion forms a second suction inlet of the cleaner and an air outlet is formed in the side of the tubular portion, adjacent its junction with the handgrip, a flexible hose being coupled between this air outlet and the upright body of the cleaner.
  • a combined handle and suction nozzle unit of elongate form having an end portion formed as a handle or handgrip and a tubular portion extending from the handle to form a suction nozzle: the free end of the tubular portion forms a second suction inlet of the cleaner and an air outlet is formed in the side of the tubular portion, adjacent its junction with the handgrip, a flexible hose being coupled between this air outlet and the upright body of the cleaner.
  • the tubular portion of the combined handle and suction nozzle unit is inserted into a socket with which the upright body of the cleaner is formed, the handle portion of the unit projecting to form a handgrip for use in manoeuvring the cleaner over the floor: the free end of the tubular portion of the handle and suction nozzle unit abuts a spring-biassed actuating member of a changeover valve to depress this actuating member and hold the valve in a position to communicate suction, developed by the fan unit of the cleaner, to the suction inlet in the floor-engaging unit.
  • the actuating member of the valve When the combined handle and suction nozzle unit is withdrawn from its socket, the actuating member of the valve is free to move under its spring bias and so move the valve into a position to communicate suction to the suction nozzle, via the flexible hose, instead of to the air inlet in the floor-engaging unit of the cleaner: the user is now able to use the suction nozzle for above-floor cleaning.
  • the tubular portion which forms the suction nozzle is shaped to form a so-called crevice tool, its cross-section changing from a circular shape to a generally rectangular shape as the nozzle tapers to its free end.
  • the combined handle and suction nozzle unit is instantly ready for many above-floor cleaning tasks upon being withdrawn from the cleaner body, the fitting of accessories, for example an extension tube, is necessary for other tasks. It is known to store such accessories on the cleaner body, typically in retaining sockets or by means of retaining clips. For cleaning some relatively inaccessible locations, for example, the user must remove an extension tube from its receptacle on the body of the cleaner, and fit this extension tube to the suction nozzle before cleaning can commence. After the cleaning operation, the extension tube must be detached from the suction nozzle and returned to its storage location on the cleaner body.
  • the terms tube and tubular are used throughout to define an elongate hollow member.
  • the elongate hollow member may have a generally constant cross-section e.g generally circular, elliptical, square or alternatively may be of varying cross-section.
  • a vacuum cleaner which comprises a floor-engaging unit having a suction inlet, an upright body mounted to said floor-engaging unit and including means for creating a suction and means for separating and collecting dirt from an airstream drawn in by said suction, a unit having a handle and a tubular portion extending from said handle, said tubular portion forming a suction inlet and being coupled to said body via a flexible hose, and said tubular portion being attachable to said body with said handle projecting for the user to grasp for manoeuvring the cleaner over the floor, wherein said tubular portion comprises first and second tubes which are telescopically coupled together to enable said tubular portion to be extended when detached from said body.
  • the first tube is joined to or extends from the handle.
  • the second tube is formed as a suction nozzle or tool, for example as a so-called crevice tool.
  • the second tube forms an outer tube disposed over the first or inner tube.
  • the combined handle and suction inlet or suction nozzle unit includes means serving to lock or latch the first and second tubes against relative longitudinal displacement, when the tubes are in one or more predetermined positions relative to one another: in a preferred embodiment, the tubes latch together only when in the fully extended condition or in the fully contracted condition, but not when in any intermediate positions.
  • a latching mechanism which comprises a sleeve mounted on the second or outer tube and arranged for limited displacement longitudinally of that tube: the latching mechanism is arranged so that upon displacement of the sleeve forwardly, when the tubes are in a contracted condition, the latch between the two tubes becomes disengaged to permit the tubes to be extended by a continuing displacement of the sleeve in the forward direction.
  • the latching mechanism includes a resiliently biased part provided at one end thereof with a projection which engages with a recess formed in the outer surface of the first or inner tube when the tubes are in their contracted condition, and an element coupled to the sleeve and arranged to act on the resiliently biased part, to displace its projection out of its recess in the first tube, upon displacement of the sleeve in the forward direction.
  • the resiliently biased part comprises a leaf spring.
  • the resiliently biased part is biased by a spring, most preferably a compression spring.
  • the latching mechanism is also arranged so that upon displacement of the sleeve rearwardly, when the tubes are in an extended condition, the latch between the two tubes becomes disengaged to permit the tubes to be contracted by a continuing displacement of the sleeve in the rearward direction.
  • the latching mechanism includes a second resiliently biased part, provided at one end thereof with a projection which engages with a recess formed in the outer surface of the inner tube when the tubes are in their extended condition, the element coupled to the sleeve being arranged to act on the second resiliently biased part, to displace its projection out of its recess in the first tube, upon displacement of the sleeve in the rearward direction.
  • the second resiliently biased part comprises a leaf spring.
  • the second resiliently biased part is biased by a spring, most preferably a compression spring.
  • the element coupled to the sleeve comprises a roller.
  • the roller is coupled to the sleeve by a member which fits into a window formed in the sleeve, and includes at least one projection which is formed with a notch which receives an axle portion of the roller.
  • a tubular arrangement which comprises inner and outer tubes which are longitudinally slidable relative to one another, and means for latching said tubes at least in one relative longitudinal position, said latching means comprising a sleeve disposed around said outer sleeve and arranged for limited longitudinal displacement along said outer tube and so that displacement of said sleeve in a predetermined longitudinal direction serves to disengage the latch between the two tubes to permit said outer tube to be displaced in said direction relative to said inner tube by a continuing displacement of said sleeve in said direction.
  • the second or outer tube is provided, at its rear end, with an external screw-thread, and an internally screw-threaded sleeve is engaged over this: rotation of the sleeve serves to compress a compression ring disposed between the outer tube and the inner tube, in order to clamp these together.
  • FIG. 1 is a side view of a vacuum cleaner in accordance with the present invention, shown with its combined handle and suction nozzle unit retained within a socket of the upright body of the cleaner so that the cleaner is configured for floor cleaning;
  • FIG. 2 is a similar view of the vacuum cleaner of FIG. 1 , shown with its combined handle and suction nozzle unit withdrawn from its socket for the cleaner to be used for above-floor cleaning;
  • FIG. 3 is an enlarged view of the combined handle and suction nozzle unit of the cleaner, shown in its contracted condition;
  • FIG. 4 is a similar view of the combined handle and suction nozzle unit, shown in its extended condition
  • FIG. 5 is a view of the underside of the handle and suction nozzle unit
  • FIG. 6 is an enlarged view of a carrier member and a sleeve cover of the latching mechanism of the handle and suction nozzle unit;
  • FIGS. 7 a and 7 b show an enlarged cross-sectional view of part of the latching mechanism of FIG. 6 ;
  • FIG. 8 is an enlarged view of a carrier member of an alternative embodiment of the latching mechanism
  • FIG. 9 is a view of the underside of the carrier member of FIG. 8 ;
  • FIG. 10 is an enlarged, cut-away view of a handle and suction nozzle unit provided with a modified mechanism for locking it telescopic tubes in desired positions.
  • an upright vacuum cleaner which comprises an upright body 10 pivotally mounted, at its lower end, to a floor-engaging unit 11 having a pair of wheels 11 a at its rear: the pivotal mounting of the body 10 enables partial rotation of the body 10 forwardly and rearwardly relative to the floor-engaging unit 11 , about a pivotal axis which extends transversely of the cleaner.
  • a motor-driven fan unit (not shown) is housed within the body 10 and serves, in use, to develop suction.
  • a first suction inlet 13 is provided in the underside of the floor-engaging unit 11 adjacent it front and a motor-driven, rotating agitator brush (not shown) is mounted transversely of the cleaner in the suction inlet 13 .
  • the vacuum cleaner also comprises a cyclone separation unit 14 of cylindrical form, mounted to the front of the body 10 , and arranged to separate out dirt and dust from the air which is drawn by suction into the cleaner, and to collect the separated-out dirt and dust.
  • the vacuum cleaner further comprises a combined handle and suction nozzle unit 12 , which is of elongate form and shown, in FIG. 1 , received in a vertical socket 16 provided in the rear of the upright body 10 of the cleaner, such that an end portion 19 of the unit 12 projects to form a handle for the cleaner.
  • the unit 12 when received within the socket 16 , is retained in place by a catch 17 , provided on the body 10 of the cleaner adjacent to top of the socket 16 , engaging a barb 18 on the side of the unit 12 .
  • the handle 19 is shaped to provide a handgrip for a user to grasp for manoeuvring the cleaner during floor cleaning.
  • the unit 12 further comprises a tubular portion 22 projecting from the handle 19 and forming an airflow duct between a second suction inlet 24 of the cleaner, at the free end of the tubular portion 22 , and an air outlet 25 formed in the side of the tubular portion 22 , adjacent its junction with the handle 19 .
  • An elongate, flexible hose 26 is coupled at one end thereof to the air outlet 25 of the unit 12 , and at the opposite end thereof to the body 10 of the cleaner.
  • the tubular portion 22 of unit 12 is telescopic.
  • the unit 12 When the cleaner is used for conventional floor cleaning, the unit 12 , in its contracted condition, is fitted into the socket 16 of the body 10 , as shown in FIG. 1 .
  • the free end of the tubular portion 22 abuts a spring-biassed actuator member of a valve (not shown) to depress the actuator member and hold the valve in a position to communicate suction from the fan unit to the first suction inlet 13 in the underside of the floor-engaging unit 11 of the cleaner.
  • the catch 17 is released manually to enable the user to withdraw the unit 12 from its socket 16 : this allows the actuator member of the valve to move under its spring bias, and so move the valve to a position to communicate suction from the fan unit to the second suction inlet 24 via the flexible hose and the air duct within the tubular portion 22 of the unit 12 .
  • the tubular portion 22 of the unit 12 forms a suction nozzle for above-floor cleaning, and in particular (in the example shown) is shaped to provide a so-called crevice tool, although it may instead be formed as any alternative type of suction tool.
  • the tubular portion 22 of the unit 12 is telescopic in form.
  • the tubular portion 22 of the unit 12 comprises a first or inner tube 30 joined at one end to the handle 19 , and a second or outer tube 32 slidably received over the first or inner tube.
  • the inner and outer tubes are of uniform, generally circular cross-section, but the forward end of the outer tube 32 tapers and changes to a generally rectangular cross-section, thus forming a so-called crevice tool.
  • the outer tube 32 may be slid along the inner tube 30 , to change the suction nozzle between the contracted condition shown in FIG. 3 and the extended condition shown in FIG. 4 : the outer tube 32 is prevented from rotating relative to the inner tube, for example by a longitudinal groove being formed in the outer surface of the inner tube 30 and a projection formed on the inner surface of the outer tube and engaged into this longitudinal groove.
  • FIGS. 5 and 6 show a mechanism provided for latching the outer tube 32 at each end of its travel relative to the inner tube 30 .
  • the mechanism comprises a carrier member 34 , in the form of a generally rectangular frame, mounted in a recess adjacent the rear end of the outer tube 32 and extending longitudinally of the tube 32 .
  • a roller member 35 extends across the carrier member 34 and its enlarged ends are arranged to run on rails along opposite sides of the carrier member 34 .
  • Two leaf springs 36 , 38 extend lengthwise of the carrier member 34 , the first spring 36 having one of its ends fixed to one end of the carrier member 34 and the second spring 38 having one of its ends fixed to the opposite end of the carrier member 34 .
  • Each spring 36 , 38 has an inwardly-inclined portion 36 a , 38 a intermediate its ends and terminates in an end portion 36 b , 38 b which carries an inwardly-directed pin 37 , 39 .
  • the two springs 36 , 38 extend over the reduced-diameter or axle portion of the roller member 35 .
  • a sleeve 40 is disposed around the outer tube 32 of the suction nozzle, over the latching mechanism: the sleeve 40 is formed with a rectangular window 41 , registered with the position of the latching mechanism, and a cover member 42 is snap-engaged into the window.
  • the cover member 42 is formed, along its opposite edges, with flanges 43 which are formed with notches 44 , which receive the axle portion of the roller member 35 .
  • the sleeve 40 is slidable along the outer tube 32 of the nozzle and it will be appreciated that movement of the sleeve 40 , in either axial direction, will drive the roller member 35 along the carrier member 34 .
  • the pin 37 of the first spring 36 engages into a socket or recess formed in the outer surface of the inner tube 30 as shown in FIG. 7 a , to latch the tubes 30 , 32 against relative longitudinal movement.
  • the user grips the sleeve 40 and displaces it forwardly in the direction of the suction nozzle: this drives the roller member 35 forwardly along the carrier member 34 and the roller member 35 accordingly engages the inclined portion 36 a of the first spring 36 to lift this spring so that its pin 37 is lifted out of the socket of the inner member, into which it was engaged.
  • a stop (not shown) is provided to limit the movement of the sleeve 40 relative to the outer tube 32 of the nozzle.
  • This stop continues forward movement of the sleeve will move the outer tube 32 forwards into its extended position, at which the pin 39 on the second spring 38 will engage into a socket or recess in the outer surface of the inner tube 30 , adjacent its forward end, to latch the nozzle in its extended condition as shown in FIG. 7 b .
  • the user grips the sleeve 40 and displaces it rearwardly away from the suction nozzle: this drives the roller member 35 rearwardly along the carrier member 34 , the roller member 35 accordingly engaging the inclined portion 38 a of the second spring 38 to lift this spring and lift its pin 39 out of the socket or recess of the inner tube 30 , into which it was engaged.
  • the sleeve 40 reaches the stop which limits its movement relative to the outer tube 32 , continued rearward movement of the sleeve 40 will move the outer tube 32 rearwards into its contracted position, at which the pin 37 on the first spring 36 will engage into the socket or recess in the inner tube 30 , adjacent its rear end.
  • FIGS. 8 and 9 show an alternative mechanism to that of FIG. 6 for latching the outer tube at each end of its travel relative to the inner tube.
  • Leaf springs 36 , 38 are replaced with two rigid lever elements 61 , 63 .
  • the first rigid lever element 61 is pivotally attached at one of its ends to the carrier member 34 while the second rigid lever element is pivotally attached at one of its ends to the opposite end of the carrier member 34 .
  • the rigid lever elements 61 , 63 are resiliently biased inwardly by compression springs 65 and 67 .
  • Each rigid lever element 61 , 63 has an inwardly directed pin 69 , 71 .
  • Movement of the sleeve 40 drives the roller member 35 along the carrier member 34 and the roller member 35 engages the inclined portion of either the first or second rigid lever element depending on whether the suction nozzle is initially in its contracted or expanded position.
  • the continued movement of the roller member 35 causes the rigid lever element 61 or 63 to pivot, compressing the spring 65 or 67 against upper portion 73 or 75 of the carrier member and lifting the pin 69 or 71 out of the socket or recess of the inner tube 30 , into which it was engaged.
  • FIG. 10 shows a modified arrangement for locking the two tubes 30 , 32 of the suction nozzle and serving to lock these tubes in any desired position longitudinally of each other.
  • a cylindrical member 50 having an external screw-thread 51 , is fixed to or forms part of the rear end of the outer tube 32 and a compression ring 52 is disposed in an annular space between the cylindrical member 50 and the inner tube 30 , at the rear end of the cylindrical member 50 .
  • a sleeve 54 having an internal screw-thread 55 , is engaged over the cylindrical member 50 : sleeve 54 is formed at its rear end with an inwardly-directed annular flange 57 .
  • the inner tube 30 is formed with a longitudinal groove 56 into which a projection on the inner surface of the outer tube 32 engages, to prevent rotation of the outer tube 32 around the inner tube, as it is slid along the latter.
  • the sleeve 54 is rotated by hand to advance it along the cylindrical member 50 , for its flange 57 to clamp against the compression ring 52 , causing the compression ring 52 to be compressed axially and expand radially, thus clamping between the cylindrical member 50 and the inner tube 30 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
US11/423,466 2005-06-14 2006-06-12 Vacuum Cleaner Abandoned US20060282976A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0512161.1 2005-06-14
GBGB0512161.1A GB0512161D0 (en) 2005-06-14 2005-06-14 Vacuum cleaner

Publications (1)

Publication Number Publication Date
US20060282976A1 true US20060282976A1 (en) 2006-12-21

Family

ID=34855563

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/423,466 Abandoned US20060282976A1 (en) 2005-06-14 2006-06-12 Vacuum Cleaner

Country Status (6)

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US (1) US20060282976A1 (de)
EP (1) EP1733673B2 (de)
CN (1) CN1947638B (de)
AT (1) ATE462341T1 (de)
DE (1) DE602006013221D1 (de)
GB (1) GB0512161D0 (de)

Cited By (6)

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US20080282499A1 (en) * 2003-04-05 2008-11-20 Hoover Limited Vacuum Cleaner
US20090089961A1 (en) * 2007-10-08 2009-04-09 Samsung Gwangju Electronics Co., Ltd. Vacuum cleaner having suction path switching unit
US20090089960A1 (en) * 2007-10-08 2009-04-09 Samsung Gwangju Electronics Co., Ltd. Upright vacuum cleaner having suction path switching valve
US9282866B2 (en) 2009-12-22 2016-03-15 Ab Electrolux Vacuum cleaner with retractable auxiliary suction hose
USRE47623E1 (en) 2008-12-24 2019-10-01 Midea America, Corp. Vacuum cleaner handle lock and valve control
US11653799B2 (en) * 2020-01-03 2023-05-23 Techtronic Floor Care Technology Limited Adapter for vacuum cleaner assembly

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KR20100006786A (ko) * 2008-07-10 2010-01-21 삼성전자주식회사 업라이트형 청소기
US8800103B2 (en) * 2008-02-28 2014-08-12 Samsung Electronics Co., Ltd. Upright type cleaner
AU2015268068B2 (en) * 2014-05-29 2018-05-10 Omachron Intellectual Property Inc. Surface cleaning apparatus
GB2559379A (en) * 2017-02-03 2018-08-08 Tti Macao Commercial Offshore Ltd A tool for a surface cleaning apparatus
CN106983442B (zh) * 2017-04-28 2019-06-28 江苏美的清洁电器股份有限公司 立式吸尘器
CN106983441B (zh) * 2017-04-28 2019-03-12 江苏美的清洁电器股份有限公司 立式吸尘器

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US2660457A (en) * 1950-04-14 1953-11-24 Adelaide H Mallon Telescopic handle
US3351363A (en) * 1964-12-23 1967-11-07 Electrolux Corp Adjustable length wand
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EP1733673B2 (de) 2014-09-10
HK1102904A1 (en) 2007-12-07
DE602006013221D1 (de) 2010-05-12
EP1733673A2 (de) 2006-12-20
GB0512161D0 (en) 2005-07-20
EP1733673B1 (de) 2010-03-31
EP1733673A3 (de) 2007-08-22
CN1947638A (zh) 2007-04-18
CN1947638B (zh) 2010-08-18
ATE462341T1 (de) 2010-04-15

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