EP1106130A1 - Tuyau d'aspirateur comportant trois éléments télescopiques - Google Patents

Tuyau d'aspirateur comportant trois éléments télescopiques Download PDF

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Publication number
EP1106130A1
EP1106130A1 EP00126251A EP00126251A EP1106130A1 EP 1106130 A1 EP1106130 A1 EP 1106130A1 EP 00126251 A EP00126251 A EP 00126251A EP 00126251 A EP00126251 A EP 00126251A EP 1106130 A1 EP1106130 A1 EP 1106130A1
Authority
EP
European Patent Office
Prior art keywords
tube
outer tube
spring
vacuum cleaner
locking element
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.)
Granted
Application number
EP00126251A
Other languages
German (de)
English (en)
Other versions
EP1106130B1 (fr
Inventor
August Cordes
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.)
Fischer Rohrtechnik GmbH
Original Assignee
Fischer Rohrtechnik GmbH
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 Fischer Rohrtechnik GmbH filed Critical Fischer Rohrtechnik GmbH
Publication of EP1106130A1 publication Critical patent/EP1106130A1/fr
Application granted granted Critical
Publication of EP1106130B1 publication Critical patent/EP1106130B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 invention relates to a telescopic vacuum cleaner suction pipe with an outer tube and an inner tube with locking recesses into which one that couples the outer tube and one that can be operated manually Slider or push button unlockable, under the action of a spring standing locking element engages.
  • Vacuum cleaner suction pipes of the above type are known essentially by the type and design of the slide differentiate between the push button and the spring. Instead of many be on Subject of DE 195 28 814 C1 referenced. At this Embodiment is the locking element when the slide is not actuated held in its locked position by a spring under pressure and when the slide is actuated against the force of the spring to one Relative displacement of inner tube and outer tube in his Unlocked position moved.
  • the locking element consists of two at an opposite acute angle to the longitudinal axis of the outer tube on an inclined sliding plane one in one Recess of the outer tube inserted in a form-fitting manner Guide body slidable, in separate locking recesses engaging clamp bodies, of which the relative movement from inside to outside tube locking clamps to solve this Locked position along the slide out of its recess its inclined sliding plane is displaceable.
  • Such two-part telescopic tubes have an insertion length between 530 mm and 600 mm on and with a full Extension length between approx. 880 mm and 1030 mm.
  • a bigger one Extension length is often desirable in practice, but fails because of the then too large insertion length, which is not only the packaging and Transport costs increased, but also a correspondingly larger Warehousing costs.
  • a remedy could be e.g. three-part telescopic vacuum cleaner suction pipe create.
  • this is linked to the problem that one hand the locking principle of locking between the first interior and the Outer tube can not be transferred to the third telescopic tube, because then the inner tube would no longer move in the outer tube.
  • Another problem arises from the requirement that one three-part vacuum cleaner tube the flow losses are not may increase because otherwise the performance of the previous used motors prove inadequate or with a unwanted drop in suction power could be associated.
  • the invention sets now the invention.
  • Characteristics a) and d) a cross-sectional narrowing compared to the previous two-part telescopic vacuum cleaner suction pipe prevented.
  • Feature b) states that the outer tube with the third tube only in extended Position near the end areas by a non-positive and / or positive locking element is detachably coupled. So that will clarified that this locking element is only in the end region of the ends facing each other in the outer tube and third tube, so that the insertability of the inner tube into the outer tube is not can be hindered.
  • This embodiment has the advantage that the user the operation of such a telescopic vacuum cleaner suction pipe already knows such a lever catch, e.g. by coupling the free one End of the inner tube with the socket of a suction hose and therefore when handling the three-part telescopic Vacuum cleaner suction tube not in other ergonomic ideas has to rethink.
  • the locking element formed by a push button standing under the action of a spring is arranged on the inner peripheral surface of the outer tube and by an opening in the outer tube and another the outer tube on this Plastic sealing ring encircling the area into a Interlocking opening of the third tube engages.
  • this push button principle is the user of the previously two-part telescopic Vacuum cleaner suction tube from the locking element between the inside and Outer tube ago known, so that this operation is not a rethink requires and also the three-part telescopic Vacuum cleaner suction pipe a uniform look without any noteworthy Gives sublimities on the outer peripheral surface.
  • a Locking element from a locking button which acts under the action of a Leaf spring or a conical spring stands with one end in a recess on the outer peripheral surface of the outer tube and with its other end a snap button through an opening in presses a sealing ring into a locking opening of the third tube.
  • This embodiment has the advantage of one at its Outer peripheral surface of the third smooth pipe, which through Pressing the locking button can be unlocked from the outer tube.
  • the leaf spring is a flat bow spring and the conical spring is like this trained that all spring turns in the interior of the previous turn find place, being in the pressed position on the block the total height of the conical spring is equal to or slightly greater than the thickness the largest turn.
  • a fourth embodiment there is Locking element from a frustoconical end portion of the third tube and from one in the opposite direction frustoconical end of the outer tube, which in extended telescopic position with their facing each other Shell surfaces also form the seal.
  • This purely frictional Coupling between the third tube and the outer tube is easy to manufacture technically and like the previously discussed embodiments the mandatory sealing ring can be dispensed with because this is at the same time non-positive coupled outer surfaces of the two truncated cones is formed.
  • the third tube and the outer tube have a smooth Outside surface without a raised push button area and thus one appealing look.
  • This fourth embodiment can also be modified be that the third tube on its facing the outer tube End with a widened area and the Inner circumferential surface of the expanded area rotatably with a Sealing sleeve made of plastic is connected to their frustoconical inner circumferential surface with that in opposite Direction frustoconical outer peripheral surface of the Outer tube forms the locking element and the sealing element.
  • the locking element from one arranged on the outer circumferential surface of the outer tube, formed with a slot expansion ring made of plastic, which with its outer peripheral surface at the corresponding end portion of the Inner circumferential surface of the third tube abuts and at a Relative rotation of both tubes to each other from a projection on the Outer peripheral surface of the outer tube, which is in a spiral Slot guide of the expansion ring engages in one direction spread apart and contracted in the other direction.
  • the sealing ring is advantageously made of polyethylene, the expansion ring from a copolymer of polymethylene oxide and the springs Spring steel.
  • the three-part telescopic vacuum cleaner suction pipe 1 consists of an inner tube 2, an outer tube 3 and one Outer tube 3 at its end 3a overlapping third tube 4.
  • Das Inner tube 2 is connected to the outer tube 3 by means of a DE 195 28 814 C1 known locking connection coupled together, the is not the subject of the present invention.
  • the inner tube 2 is provided with locking recesses into which a coupling the outer tube 3 with it as well as manually actuable slide 6 or push button unlockable, under effect a spring 7 standing locking element 8 in the form of two clamping wedges intervenes.
  • the outer tube 3 is on its inner tube 2 End 3a facing away from a third tube 4.
  • the Outer tube 3 is extended with the third tube 4 in the illustrated 1 near the end regions 3a, 4a of the two Pipes 3, 4 either through a non-positive and / or a positive locking element detachably coupled.
  • the locking element consists of a non-positive connection, namely from a truncated cone End region 4a of the third tube 4 and from one in opposite Direction frustoconical end 3a of the outer tube 3, those in the extended telescopic position shown with their each other facing lateral surfaces 3b, 4b also form the seal 3b, 4b.
  • FIG. 2 is the positive connection in an enlarged view Coupling of the outer tube 3 with the third tube 4 of FIG. 1 3, while FIG. 3 shows the loose position of FIG. 2 of the two pipes 3 and Figure 4 shows after the outer tube 3 in the direction of arrow 9 of Fig. 2 is inserted into the outer tube 4.
  • the extended position 2 form the mutually facing lateral surfaces 3b of the Outer tube in connection with the inner surface 4b of the third Tube 4 a frictional and airtight friction connection. A additional seal is therefore unnecessary in this embodiment.
  • the airflow for the three-part telescopic vacuum cleaner suction pipe always takes place in the direction of arrow 10, that is to say in the image planes of right to left.
  • 4 and 5 is a modification of the non-positive Locking element 3b, 4b shown in FIGS. 1 to 3.
  • the third pipe 4 at its end 4a facing the outer pipe 3 a widened area 4c and the inner peripheral surface 4d this widened area 4c in a rotationally fixed manner with a sealing sleeve 11 Connected from plastic with its frustoconical Inner peripheral surface 11a with that in the opposite direction frustoconical outer circumferential surface 3b of the Outer tube 3 at this end portion 3a, the locking element and forms the sealing element 11a-3b.
  • connection of the Sealing sleeve 11 is carried out with the overlapping third tube 4 either by means of an adhesive layer or - as shown - over cam-like extensions 12 of the sealing sleeve 11, which in corresponding Engage openings 13 of the third tube 4.
  • 6a and 7 and 7a is a third embodiment a now interlocking locking element between the Outer tube 3 and the third tube 4 shown.
  • This form-fitting Locking element which is generally identified with the reference number 16 is composed of a on the end portion 4a Outer peripheral surface 4e of the third tube 4 arranged lever catch 17, which is at one end 17b on the outer peripheral surface 4e of the third tube 4 supports and with its other end 17c under effect a spring 18 engages in a locking opening 19 in the outer tube 3.
  • the seal is provided by a plastic ring 20 formed on the inner circumferential surface 4d of the third tube 4 rotatably arranged and with a passage opening 21 for the end 17c of the Lever catch 17 is provided.
  • the locking element 16 consists of a Locking button 22, under the action of a leaf spring 23 or according to the Fig. 13 is under the action of a conical spring 24, the one with End 23a or 24a in a trough 25 on the outer peripheral surface 3b of the Outer tube 3 supports and with its other end 23b or 24b Locking button 22 through an opening 26 of a sealing ring 27 in presses a locking opening 28 of the third tube 4.
  • the Leaf spring 23 as a flat bow spring and the conical spring 24 such trained that all spring turns in the interior of the previous turn find place, being in the pressed position on the block the total height of the conical spring is equal to or slightly greater than the thickness the largest turn.
  • the Trough 25 on the outer peripheral surface 3b of the outer tube 3 rectangular formed and provided with tapered side surfaces 25a.
  • the trough 25 is in one thin ring sleeve 40 arranged with the inner peripheral surface 3c of the Outer tube 3 is connected. Otherwise, with FIGS. 8 to 10 Matching parts have the same reference numbers.
  • This Embodiment according to FIGS. 11 to 13 has the manufacturing engineering preference of smooth pipe ends 3a, 4a while the trough 25 is arranged in a thin additional sleeve 40.
  • this is Locking element 16 formed by a push button 29
  • the under Effect of a leaf-like partial ring spring 30 is on the Inner circumferential surface 3c of the outer tube 3 is arranged and by a Opening 31 in the outer tube 3 and through an outer tube 3 in this Area encompassing plastic sealing ring 32 into a Locking opening 33 of the third tube 4 engages.
  • the spring 30 as one of the Inner circumferential surface 3c of the outer tube 3 nestling partial ring spring educated.
  • 16 to 18 is a further locking element 16 disclosed which of a on the outer peripheral surface 3b of the Outer tube 3 arranged, provided with a slot 34 Spreading ring 35 is formed of plastic, with its Outer peripheral surface 35a at the corresponding end region 4a of the Inner circumferential surface 4b of the third tube 4 abuts and at one Relative rotation of the two tubes 3, 4 to each other in the direction of Arrow 39 of FIG. 17 from a projection 36 on the Outer peripheral surface 3b of the outer tube 3, which is in a spiral Slot guide 37 of the expansion ring 35 engages in one direction spread apart and contracted in the other direction.
  • the expanded position of the expansion ring 35 is in Fig. 16 and the The contracted position of the expansion ring 35 in FIGS. 17 and 18 shown.
  • slot 34 is wider in this figure than in FIG 17 and 18.
  • this is Outer tube 3 coupled to the inner tube 4.
  • This coupling takes place by pressing the expansion ring 35 with its Outer peripheral surface 35a on the inner peripheral surface 4b of the Outer tube 4 on the one hand and with its inner peripheral surface on the Outer peripheral surface 3b of the outer tube 3 on the other hand.
  • the outer tube 3 with the third tube 4 becomes a friction clutch Detachably connected in the extended telescopic position.
  • the air flow takes place in the direction of arrow 10 from the right half of the picture to the left half of the picture.
  • the air flows through the telescopic vacuum cleaner suction pipe 1 contrary to the stovepipe principle. While the stovepipe principle teaches that flue gases are conducted through a continuously expanding flow cross section, the air flow in the vacuum cleaner suction pipe 1 according to FIG. 1 takes place in exactly the opposite direction, namely from a relatively large cross section Q 1 of the third pipe 4 into one smaller cross section Q 2 in the outer tube 3 and from there into the smallest cross section Q 3 of the inner tube 2.
  • the cross sections Q 1 , Q 2 and Q 3 are dimensioned such that the inner cross section Q 2 of the outer tube 3 at the height of the seal 27 and thus also at the height, for example, of the trough 25 of FIGS. 8 and 11 or larger than the smallest flow cross section Q 3 of the inner tube 2 of the vacuum cleaner suction tube 1 is formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Joints Allowing Movement (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
EP00126251A 1999-12-03 2000-12-01 Tuyau d'aspirateur comportant trois éléments télescopiques Expired - Lifetime EP1106130B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19958322A DE19958322C2 (de) 1999-12-03 1999-12-03 Dreiteiliges teleskopierbares Staubsauger-Saugrohr
DE19958322 1999-12-03

Publications (2)

Publication Number Publication Date
EP1106130A1 true EP1106130A1 (fr) 2001-06-13
EP1106130B1 EP1106130B1 (fr) 2002-07-17

Family

ID=7931301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00126251A Expired - Lifetime EP1106130B1 (fr) 1999-12-03 2000-12-01 Tuyau d'aspirateur comportant trois éléments télescopiques

Country Status (3)

Country Link
EP (1) EP1106130B1 (fr)
AT (1) ATE220522T1 (fr)
DE (2) DE19958322C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008136724A1 (fr) 2007-05-07 2008-11-13 Ab Electrolux Tuyau en trois parties
CN1977753B (zh) * 2005-12-08 2010-06-16 罗克山有限公司 可伸缩式吸尘器吸管
CN103976692A (zh) * 2014-05-30 2014-08-13 苏州信德电器有限公司 伸缩管

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10236519B4 (de) * 2002-08-09 2006-05-18 Fischer Rohrtechnik Gmbh Staubsauger-Saugrohr mit Verriegelung des Innenrohres in eingeschobener Position durch einen Betätigungshebel eines Rastelementes auf dem Außenrohr
DE102011116074A1 (de) * 2011-10-18 2013-04-18 Fischer Rohrtechnik Gmbh Staubsauger-Saugrohr
US8894099B2 (en) 2011-10-18 2014-11-25 Fischer Rohrtechnik Gmbh Vacuum cleaner suction pipe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3409578A1 (de) * 1984-03-15 1985-09-19 Siemens AG, 1000 Berlin und 8000 München Saugrohr fuer einen staubsauger
US5692782A (en) * 1995-08-05 1997-12-02 Fischer-Rohtechnik Gmbh Telescopable vacuum cleaner suction pipe

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5836620A (en) * 1996-09-10 1998-11-17 Kinergy Industrial Co., Ltd. Telescopic extension wand for vacuum cleaner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3409578A1 (de) * 1984-03-15 1985-09-19 Siemens AG, 1000 Berlin und 8000 München Saugrohr fuer einen staubsauger
US5692782A (en) * 1995-08-05 1997-12-02 Fischer-Rohtechnik Gmbh Telescopable vacuum cleaner suction pipe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1977753B (zh) * 2005-12-08 2010-06-16 罗克山有限公司 可伸缩式吸尘器吸管
WO2008136724A1 (fr) 2007-05-07 2008-11-13 Ab Electrolux Tuyau en trois parties
EP2155031A1 (fr) * 2007-05-07 2010-02-24 Ab Electrolux Tuyau en trois parties
EP2155031A4 (fr) * 2007-05-07 2010-12-01 Electrolux Ab Tuyau en trois parties
CN101677728B (zh) * 2007-05-07 2013-01-16 伊莱克斯公司 三部分管
CN103976692A (zh) * 2014-05-30 2014-08-13 苏州信德电器有限公司 伸缩管
CN103976692B (zh) * 2014-05-30 2016-05-18 苏州信德电器有限公司 伸缩管

Also Published As

Publication number Publication date
DE19958322A1 (de) 2001-08-16
EP1106130B1 (fr) 2002-07-17
DE50000280D1 (de) 2002-08-22
DE19958322C2 (de) 2002-05-08
ATE220522T1 (de) 2002-08-15

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