EP0893089A1 - Teleskopierbares Staubsauger-Saugrohr, Verriegelungsvorrichtung für dieses Rohr, und Anwendung dieser Vorrichtung in einem Saugrohr - Google Patents

Teleskopierbares Staubsauger-Saugrohr, Verriegelungsvorrichtung für dieses Rohr, und Anwendung dieser Vorrichtung in einem Saugrohr Download PDF

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Publication number
EP0893089A1
EP0893089A1 EP97630046A EP97630046A EP0893089A1 EP 0893089 A1 EP0893089 A1 EP 0893089A1 EP 97630046 A EP97630046 A EP 97630046A EP 97630046 A EP97630046 A EP 97630046A EP 0893089 A1 EP0893089 A1 EP 0893089A1
Authority
EP
European Patent Office
Prior art keywords
tube
locking
circle
cam
arc
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Withdrawn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
EP97630046A
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English (en)
French (fr)
Inventor
Fernand Remakel
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.)
Apparatur Verfahren SA
Original Assignee
Apparatur Verfahren SA
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 Apparatur Verfahren SA filed Critical Apparatur Verfahren SA
Priority to EP97630046A priority Critical patent/EP0893089A1/de
Publication of EP0893089A1 publication Critical patent/EP0893089A1/de
Withdrawn legal-status Critical Current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
    • 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 generally relates to a locking device for telescopic tubes and it relates more particularly to a nozzle tube telescopic adjustment for vacuum cleaner comprising an outer tube, an inner tube provided an axial row of locking notches, and a blocking device comprising a first element having a flexible arm in the radial direction and provided with its free end of a locking lug extending towards the interior and designed to engage the notches, and a second element comprising a locking cam now the locking pin engaged in one of the notches if the cam is on the end of the flexible arm, this cam can be moved angularly in order to free itself from the flexible arm to allow the release of the lug blocking of the aforementioned notch.
  • a nozzle tube of this type is described in the German patent DE-C-38 07 028.
  • This German patent describes a two-piece locking mechanism comprising a sleeve internal received on one end of the external tube and fitted a flexible arm carrying at its free end a lug for engagement with internal tube cuts.
  • a outer sleeve is rotatably mounted on the inner sleeve and is equipped with a cam surface, which in a position of the outer sleeve keeps the flexible arm in position blocking and in the other position of the outer sleeve allows outward flexing of the arm to be able adjust the telescopic tubes relative to each other.
  • the outer sleeve is dimensioned so that it maintains its rotational position in any angular position by automatic locking while ensuring its lightness of manual rotation.
  • this blocking mechanism is more complex because it has a high number of spare parts.
  • the object of the present invention is to provide a telescopic suction nozzle for vacuum cleaner dust, of the type described above, allowing with simple means automatic recall of the blocking in its blocking position.
  • the adjustable squeegee tube automatic for vacuum cleaner of the type described above is characterized in that the second element is a flexible element which can be deformed by applying a manual force to this element in order to release the cam blocking of the flexible arm, the second element by memorization of its shape reminiscent of the locking cam automatically in its locked position on the end flexible arm when manual force is removed.
  • the invention also aims to provide a locking device for an adjustable squeegee tube telescopic, which allows with simple means to maintain its blocking position or come back after each automatically actuated in the locked position.
  • the invention provides a locking device, in particular for a telescopic squeegee tube for dust vacuum cleaner, comprising a first element having a flexible arm in the radial direction and provided with its free end of a locking lug extending towards the interior, and a second element comprising a cam blocking now the blocking lug in its position locking if the cam is on the end of the arm flexible, this cam being able to be angularly moved in view of disengaging from the flexible arm to allow radial movement towards the outside of the locking pin, characterized in that the second element is an element flexible which can be deformed by the application of force manually to this element in order to release the locking cam flexible arm, the second element by memorizing its shape reminiscent of the locking cam automatically in its locking position on the end of the flexible arm when manual force is removed.
  • the second element preferably has a first part formed to be retained against movement of rotation relative to the first element, a second part movable in circumferential direction relative to the first part, axially spaced from the first part and provided with the locking cam, and a part flexible intermediary between the first part and the second part.
  • the second element comprising the first part, the second part and the part flexible intermediate is made in one piece.
  • the second element has a substantially cylindrical frame resting astride on the first element having the shape of a sleeve tubular.
  • the frame preferably comprising two elements substantially arcuate curves semicirculars kept axially spaced one of the other by two elastic elongated side elements extending substantially in the axial direction and connecting the ends of the elements in the shape of an arc of a circle.
  • the first element can have an arc-shaped control button substantially semicircular circle, this button being connected between its ends to the arcuate element provided with the locking cam.
  • the command button can be arranged radially outside the element in form of a circular arc provided with the locking cam, with the control button being radially spaced from this this element in the shape of an arc of a circle over its entire length circumferential on both sides of its junction point to the element in the shape of an arc of a circle.
  • a projection radial can extend outward from the sleeve tubular at the connected end of the flexible arm and the means of connection of the element in the shape of an arc of a circle can be a handle located midway between the ends of this arcuate element for receive the radial projection in order to couple the second element with tubular sleeve.
  • the invention also relates to the use of this locking device in an adjustable squeegee tube telescopic.
  • the tubular sleeve and the frame semicylindrical locking element are received at inside the outer tube with the control button the locking element located outside the outer tube.
  • the end of the outer tube can be received between the command button for the circular arc element provided with the locking cam with the locking cam located in the outer tube, and the angular movement of the button command in either direction from a blocking position can be limited by engagement with the ends of a circumferential cut in the tube outside of a junction part of the control button to the arcuate element provided with the cam blocking.
  • the tubular sleeve has a second flexible arm provided with a projection extending towards outside, this projection being received in a cut the outer tube to prevent rotation of the tubular sleeve relative to the outer tube.
  • the tubular sleeve may also have known its internal surface an axial rib received in an axial groove of the tube interior to prevent rotation of the inner tube relative to the tubular sleeve and the outer tube.
  • the squeegee tube has an outer tube 10 and a tube interior 12.
  • the interior tube 12 has an axial row locking notches 14 and a longitudinal groove 16.
  • the outer tube 10 has an enlarged end 18 receiving at its interior a locking device 20 for adjustment telescopic the length of the crevice tube consisting the outer tube 10 and the inner tube 12.
  • the tubes 10 and 12 can be made of metal, for example, aluminum or stainless steel.
  • the locking device 20 has a tubular sleeve 22 having a circumferential rim 24 at its end rear and a circumferential rim 30 of a larger diameter at its front end. Near the ledge circumferential to larger diameter this tubular sleeve 22 is also provided with two circumferential collars 26 and 28 with a diameter equal to the diameter of the rim rear circumferential 24.
  • the tubular sleeve 22 is disposed in the enlarged part 18 of the outer tube 10 with the end of the outer tube 10 coming into contact with the face rear radial of the rim with a larger diameter 30.
  • the rear edge 24 and the two collars 26 and 28 having a diameter equal to the inside diameter of the widened part 18 of the outer tube 10 in order to correctly position the tubular sleeve 22 in the enlarged part 18 of the tube outside 10.
  • the tubular sleeve 22 has in its wall circumferential between the rear edge 24 and the collar rear 26 a cutout 32 extending axially.
  • An arm axial 34 cantilever is arranged in the cutout 32 and extends from the rear end of the cutout 32 toward its front end and carries a lug at its front end blocking 36 extending radially inward.
  • the arm 34 is flexible in the radial direction.
  • a projection 38 extends radially outward at the end rear of flexible arm 34 connected to the wall circumferential of the tubular sleeve.
  • the sleeve tubular 22 has another axial cutout 70 and another axial arm 72 extending from the rear end of this cut to its front end.
  • This other axial arm 72 is also flexible in the radial direction and bears on its external face a projection 74 extending radially towards outside.
  • This projection 74 is intended to be received in a cutout 76 of the enlargement 18 of the outer tube 10 for fixing the tubular sleeve 22 in the tube external 10 against axial and circumferential movement.
  • the axial length of the second cutout 70 is substantially less than the axial length of the first cut 32 and the other flexible arm 72 is much shorter than the first flexible arm 34 so that the other arm 72 is less flexible 34 than the first arm 34 in order to retain the tubular sleeve 22 securely in position in enlargement 18 of the outer tube 10.
  • This projection 74 can be released from the cut 76 in the enlargement 18 of the tube outside to remove the tubular sleeve 22 from the tube outside 10.
  • the tubular sleeve 22 also bears on its internal surface a longitudinal rib 40 which engages in the longitudinal groove 16 of the inner tube 12 when the two tubes 10, 12 are assembled for the purpose of guide the two tubes for their telescopic movement while by preventing a rotational movement of one of the two tubes relative to each other and therefore a movement of rotation of the inner tube 12 relative to the sleeve tubular 22 which is prevented from turning relative to the outer tube 10.
  • the blocking device 20 also has an element of blocking 42 of semicylindrical shape and comprising a frame substantially semi-cylindrical 44 and a control button 46 secured to the front end of the frame 44.
  • the frame semi-cylindrical 44 has an arched rear element of circle 48 substantially semicircular and a front element in the form of a substantially semicircular arc of a circle 50.
  • the ends of the elements in the shape of an arc of a circle 48 and 50 are connected by side elements 50 and 54 extending substantially in the axial direction.
  • the Ray interior of the elements in the shape of an arc of a circle 58 and 50 is essentially equal to the radius of the cylindrical surface of the tubular sleeve 22 and the external radius of the elements in the shape of an arc of a circle 48 and 50 is essentially equal to the internal radius of the widened part 18 of the outer tube 10.
  • the axial side elements 52 and 54 are flexible in circumferential direction and by memorizing their shape always come back in their substantially axial position relative to the sleeve tubular 22.
  • a handle 56 is provided intended to receive the projection 38.
  • the front element in the shape of an arc of a circle 50 carries a cam halfway between its ends blocking 58 extending rearward.
  • the command button 46 is connected to the front element 50 in the form of a circular arc at the location of cam 58 and this control button 46 is provided with extensions 60 and 62 extending from each of sides of button 46 in circumferential direction along from the front element 50 in the shape of an arc of a circle up to ends of this element 50 while being apart radially of this element by a corresponding distance approximately the thickness of the enlargement 18 of the outer tube 10.
  • the element blocking 42 is first placed astride the sleeve tubular 22 so that the projection 38 is received in the handle 56.
  • the locking cam 58 comes place radially outside on the end of the arm flexible 34 and on lug 36 extending radially towards inside the flexible arm 34.
  • the rear element 48 in the shape of an arc of a circle is spaced axially from the rear edge 24 and the front element 50 in form of a circular arc is placed against the necklace rear 26.
  • the blocking device is introduced into enlargement 18 of the outer tube 10 until the front end of the enlargement 18 comes into contact with the rear radial surface of the front edge 30 to more large diameter.
  • the joining part 66 of the button control 46 at the front element 50 in the form of a circular arc is received in a circumferential cutout 64 provided at the front end of the enlargement 18 of the outer tube 10. If the front end of the enlargement 18 contacts the rear face of the rim 30 the locking cam 58 is received at inside the enlargement wall 18 at the end back of cutout 64.
  • the internal tube 12 is introduced into the tubular sleeve 22 and the outer tube 10 with the groove 16 of the inner tube 12 receiving the rib longitudinal 40 of the tubular sleeve 22.
  • the control button 46 is operated in either direction to allow outward radial flexing of the arm flexible 34.
  • the axial side elements 52 and 54 of the frame semi-cylindrical 44 are deformed in direction circumferential because the back part of the frame is prevented from moving angularly relative to the tubular sleeve 22 by engagement of the projection 38 in handle 54 at the rear end of the frame semi-cylindrical 44.
  • the frame remains under elastic stress in its deformed position in which the side elements 52 and 54 exert a elastic return force to the shaped front element 50 of circular arc constantly tending to bring back the cam of blocking 58 on the lug 36 in the blocking position.
  • the frame returns, under the effect of its constraint elastic, immediately in its locked position non-deformed initial now lug 36 in the notch 14.
  • the locking device of the present invention is therefore characterized by a very great simplicity comprising only two separate pieces which can be manufactured plastic and the locking device after removal of the control force applied to the button control always automatically returns to its position blocking after latching of lug 36 in one notches 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
EP97630046A 1997-07-25 1997-07-25 Teleskopierbares Staubsauger-Saugrohr, Verriegelungsvorrichtung für dieses Rohr, und Anwendung dieser Vorrichtung in einem Saugrohr Withdrawn EP0893089A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97630046A EP0893089A1 (de) 1997-07-25 1997-07-25 Teleskopierbares Staubsauger-Saugrohr, Verriegelungsvorrichtung für dieses Rohr, und Anwendung dieser Vorrichtung in einem Saugrohr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97630046A EP0893089A1 (de) 1997-07-25 1997-07-25 Teleskopierbares Staubsauger-Saugrohr, Verriegelungsvorrichtung für dieses Rohr, und Anwendung dieser Vorrichtung in einem Saugrohr

Publications (1)

Publication Number Publication Date
EP0893089A1 true EP0893089A1 (de) 1999-01-27

Family

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EP97630046A Withdrawn EP0893089A1 (de) 1997-07-25 1997-07-25 Teleskopierbares Staubsauger-Saugrohr, Verriegelungsvorrichtung für dieses Rohr, und Anwendung dieser Vorrichtung in einem Saugrohr

Country Status (1)

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EP (1) EP0893089A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10159255A1 (de) * 2001-12-03 2003-06-18 Bsh Bosch Siemens Hausgeraete Kupplungsteil zum Verbinden mindestens eines rohr-oder stangenförmigen Teiles mit einem anderen Teil
US7168128B2 (en) 2001-03-08 2007-01-30 Dyson Technology Limited Wand assembly for a domestic appliance
US7877837B2 (en) 2002-09-14 2011-02-01 Dyson Technology Limited Cleaning appliance including a telescopic wand assembly retainer
DE102011075018A1 (de) 2011-04-29 2012-10-31 BSH Bosch und Siemens Hausgeräte GmbH Staubsauger-Zubehörteil mit Kupplungsstutzen und Rastsystem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582446A (en) * 1950-07-21 1952-01-15 Royal Vacuum Cleaner Company Airtight tubular coupling
DE3807028C1 (en) * 1988-03-04 1989-09-07 Heidemann-Werke Gmbh & Co Kg, 3352 Einbeck, De Telescopic tube connection
EP0552481A1 (de) * 1992-01-11 1993-07-28 Carl Froh GmbH & Co Teleskopierbares Staubsauger-Saugrohr
DE29621795U1 (de) * 1996-12-17 1997-06-12 Froh Carl Gmbh Teleskopierbares Staubsauger-Saugrohr

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582446A (en) * 1950-07-21 1952-01-15 Royal Vacuum Cleaner Company Airtight tubular coupling
DE3807028C1 (en) * 1988-03-04 1989-09-07 Heidemann-Werke Gmbh & Co Kg, 3352 Einbeck, De Telescopic tube connection
EP0552481A1 (de) * 1992-01-11 1993-07-28 Carl Froh GmbH & Co Teleskopierbares Staubsauger-Saugrohr
DE29621795U1 (de) * 1996-12-17 1997-06-12 Froh Carl Gmbh Teleskopierbares Staubsauger-Saugrohr

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7168128B2 (en) 2001-03-08 2007-01-30 Dyson Technology Limited Wand assembly for a domestic appliance
US7350267B2 (en) * 2001-03-08 2008-04-01 Dyson Technology Limited Wand assembly for a domestic appliance
DE10159255A1 (de) * 2001-12-03 2003-06-18 Bsh Bosch Siemens Hausgeraete Kupplungsteil zum Verbinden mindestens eines rohr-oder stangenförmigen Teiles mit einem anderen Teil
US7877837B2 (en) 2002-09-14 2011-02-01 Dyson Technology Limited Cleaning appliance including a telescopic wand assembly retainer
DE102011075018A1 (de) 2011-04-29 2012-10-31 BSH Bosch und Siemens Hausgeräte GmbH Staubsauger-Zubehörteil mit Kupplungsstutzen und Rastsystem

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