EP0664988A1 - Tuyau téléscopique d'aspirateur avec conducteur électrique en spirale - Google Patents

Tuyau téléscopique d'aspirateur avec conducteur électrique en spirale Download PDF

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Publication number
EP0664988A1
EP0664988A1 EP94116619A EP94116619A EP0664988A1 EP 0664988 A1 EP0664988 A1 EP 0664988A1 EP 94116619 A EP94116619 A EP 94116619A EP 94116619 A EP94116619 A EP 94116619A EP 0664988 A1 EP0664988 A1 EP 0664988A1
Authority
EP
European Patent Office
Prior art keywords
pipe
line
tube
groove
pipe 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.)
Granted
Application number
EP94116619A
Other languages
German (de)
English (en)
Other versions
EP0664988B1 (fr
Inventor
Gerhard Dipl.-Ing. Stettner
Achim Dipl.-Ing. Breiter
Dieter Wölfel
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.)
AEG Hausgeraete GmbH
Original Assignee
AEG Hausgeraete 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 AEG Hausgeraete GmbH filed Critical AEG Hausgeraete GmbH
Publication of EP0664988A1 publication Critical patent/EP0664988A1/fr
Application granted granted Critical
Publication of EP0664988B1 publication Critical patent/EP0664988B1/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
    • A47L9/246—Hose or pipe couplings with electrical connectors
    • 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 suction pipe according to the preamble of the first claim.
  • a multiply coiled electrical line surrounding the circumference is placed around the outer circumference of one of the telescopically displaceable pipes, the first end of which leads to a suction hose to be connected to the suction pipe and the second end of which is on the outside the jacket of the other pipe leads to a working tool attached to this pipe.
  • the disadvantage of this structure is that the electrical line extends downwards in an uncontrolled manner due to its own weight and thereby lies closely against the respective jacket of the tube. This can hinder the free movement of the pipes. Special holding elements are therefore required to hold the electrical line.
  • the invention has for its object to take measures in a suction pipe according to the preamble of the first claim, through which a free mobility of the coiled portion of the electrical line is achieved.
  • a helical line produced with a helical diameter that is small compared to the tube diameter is introduced into a cavity between the outer tube and the inner tube, in which it is guided freely and only on the outer sides thereof on the inner sides of the cavity.
  • One end of the helical line is fixed in the area of the end section of the inner tube, which ends in the outer tube.
  • the second end is held in the region of the end section of the outer tube, which overlaps the inner tube.
  • a sliding tab can be provided on the end section of the inner tube, which tightly engages in a shape of the outer tube corresponding to the cavity and directed radially outwards and running in the longitudinal axis of the tube, as well as this inner end section of the inner tube on it rest of the circumference sealingly against the inner jacket of the outer tube.
  • the end portion of the outer tube which surrounds the inner tube also lies sealingly on the outer circumference of the inner tube, the shape formed as a groove also being closed on the end face, so that also in this end section is an all-round seal between the pipes.
  • the groove required to accommodate the helical cable can also be displaced as a radially inward indentation in the jacket of the inner tube.
  • a sliding tab of the outer tube engages in this groove for sealing, if the sealing end in the area of the immersing end section of the inner tube is not sufficient.
  • the cavity can also be represented by embossing on the inner tube as on the outer tube.
  • the outer tube can also be provided with a longitudinal slot, which is closed by means of a curved channel profile piece, which can be fixed in the area of the opening in the tube in question, for example by welding.
  • a curved channel profile piece which can be fixed in the area of the opening in the tube in question, for example by welding.
  • the spiral line is connected at its first end to an additional electrical line section, preferably connected in one piece, which leads from the overlapped end section of the inner tube on the inner tube into the region of the free end of the inner tube to a connection point provided there.
  • another electrical line section likewise preferably connected in one piece, leads to the free end of the outer tube and to a second connection point provided there.
  • beads that are adapted to the inner tube can be pressed into the outer tube provide mechanical protection for these line sections.
  • an inwardly embossed bead in the outer tube can accommodate the further line section and at the same time engage in an adapted longitudinal bead of the inner tube and thus serve as an anti-twist device between the two tubes.
  • the helical line can also consist of flat and zigzag-shaped adjoining helical webs, which are curved in particular in accordance with the pipe curvature, so that the cavity can be made correspondingly low in the radial direction and the bead (s) can be made correspondingly flat .
  • the representation of the cavity can then be accomplished with less deformation work on the pipe or pipes.
  • a locking mechanism can be structurally combined with the outwardly directed part of the groove of the outer tube, so that a closed structure is achieved which can accommodate any necessary electrical connection connections between the helical line and the further line section.
  • a telescopic suction pipe for vacuum cleaners to which electrically operated additional devices are to be connected, has an inner pipe 1 and an outer pipe 2 with a larger diameter, the inner pipe 1 being axially displaceably mounted in the outer pipe 2 via interposed ring seals 3.
  • a cavity 4 is formed, in which a preferably two-wire electrical wire, which is wound in circular turns, is accommodated, the helical axis of which runs parallel to the tube longitudinal axis.
  • the cavity 4 can be formed in the undeformed inner tube 1 by a radially outward, extending over the displacement of the inner tube and the length of the compressed spiral line 5, radially outward and embossed into the jacket of the outer tube 2, the cross section for the Recording of the helical line is sufficiently large so that the helical line 5 can be freely expanded and compressed therein.
  • a radially engaging in the groove 6 possibly detachable sliding tab 8 is attached to the end section 7 of the inner tube overlapped by the outer tube 2, which provides a tight seal over the free displacement path within the groove 6 ensures.
  • the groove 6, which is designed as a shape of the outer tube 2, is closed at the end section 9, which overlaps the inner tube 1, by an adapted, possibly removable end wall 10 and, like the rest of the end section, is largely dust and airtight with respect to the outer jacket of the inner tube 1.
  • a first end 11 of the helical line 5 is connected via clamping or soldering pieces, but preferably in one piece, to an additional line section 12, which is connected by the sliding tab 8 or the adjacent end section 7 of the Inner tube into the inner tube 1 and on the inner jacket in the region of the free end 13 of the inner tube and out there to a first connection point 14 with plug contacts 15.
  • This additional line section 12 can, however, also be laid from the outside in a preferably inwardly directed longitudinal bead 16 of the inner tube, the outwardly open longitudinal bead 16 being cast, for example, with an insulating material and supplementing the round contour of the outer tube.
  • the additional line section can be inserted inside the inner tube 1 and protected against mechanical damage by means of a protective cover.
  • This longitudinal bead can engage in an adapted longitudinal bead of the outer tube and can thus be used as an anti-rotation device between the two tubes 1, 2.
  • the free end 13 of the inner tube facing the second end 17 of the helical line 5 is fixed in the region of the end wall 10 of the groove 6 on the outer tube 2 and preferably also integrally merges into a further line section 18 which on the outer tube 2 to one of the free end 19 of the Outer tube 2 associated second connection point 20 is guided with contacts 21.
  • the outer tube 2 can have a corresponding longitudinal bead 22 which runs next to the cavity 4 or along the groove 6.
  • the helical line 5 is located in the cavity 4 in its axially undrawn position. If the outer tube 2 is pushed axially further onto the inner tube 1, then the end wall 10 and thus the second end 17 of the helical line 5 also migrates toward the free end 13 of the inner tube 1. Since the first end 11 of the helical line 5 is fixed on the inner tube 1, the helical line 4 is axially stretched and thus serves as an elastic connecting member between the electrical line sections 12 and 18, which are fixed on the inner tube 1 and on the outer tube 2.
  • connection points 14 and 20 The current-conducting connection between the connection points 14 and 20 is thus retained, the axial displacement of the tubes 1, 2 is reliably maintained, the spiral line 5 ensuring by its own insulation that no electrical circuit with the tubes 1, 2, which are made in particular of metal, can occur . If such a danger is to be feared, the bead 6 and the jacket part of the inner tube covered by it can be provided with an additional electrical insulating coating.
  • the helical line 5 is pushed back into the position shown. In this embodiment, no susceptible sliding contacts are required.
  • the helical line 5 can also be formed by the fact that the cable is not wound spirally, but is folded flat and zigzag-shaped, this folding being permanently retained and elastically contracting itself back to the starting position after stretching.
  • the spiral web can be curved to match the pipe curvature, so that the cavity 4 with an enlarged extent in the circumferential direction can be limited essentially in its radial dimension to the size of the diameter of the individual spiral webs. Such flat embossing can be carried out on pipes with simplified effort.
  • the groove 6 assigned to the outer tube 2 can be integrated in an actuating mechanism 24 for locking the tubes 1, 2 in different axial positions, so that a closed structure is achieved overall.
  • an outwardly curved channel profile piece can also be placed on the jacket of the outer tube 2, which is closed at both ends and covers an adapted longitudinal section of the outer tube 2.
  • the outer tube 2 only needs to be slotted in the region of the groove 6 for the passage of the additional line section, while the other end of the helical line 5 is still fixed to the end of the groove 6 which faces the free end 13 of the inner tube 1.
  • These partial grooves are also closed at the ends, the sliding elements 8, 10 corresponding sliding elements on the tubes 1, 2 immersing tightly in the groove of the other tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
EP94116619A 1994-01-31 1994-10-21 Tuyau téléscopique d'aspirateur avec conducteur électrique en spirale Expired - Lifetime EP0664988B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4402835A DE4402835C2 (de) 1994-01-31 1994-01-31 Teleskopierbares Saugrohr mit elektrischer Leitung
DE4402835 1994-01-31

Publications (2)

Publication Number Publication Date
EP0664988A1 true EP0664988A1 (fr) 1995-08-02
EP0664988B1 EP0664988B1 (fr) 1999-03-31

Family

ID=6509085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94116619A Expired - Lifetime EP0664988B1 (fr) 1994-01-31 1994-10-21 Tuyau téléscopique d'aspirateur avec conducteur électrique en spirale

Country Status (2)

Country Link
EP (1) EP0664988B1 (fr)
DE (2) DE4402835C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0738492A1 (fr) * 1995-04-21 1996-10-23 Matsushita Electric Industrial Co., Ltd. Aspirateur
EP0835632A2 (fr) * 1996-08-13 1998-04-15 Bosch-Siemens HausgerÀ¤te GmbH Dispositif réglable de connexion électrique pour tuyau télescopique d'aspirateur
CN1781438B (zh) * 2004-11-22 2011-08-10 胡佛有限公司 真空吸尘器的伸长杆

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19638976A1 (de) * 1996-09-23 1998-03-26 Bosch Siemens Hausgeraete Verstellbare Stromübertragungseinrichtung für ein Staubsaugerteleskoprohr
PL181955B1 (pl) * 1996-10-28 2001-10-31 Zelmer Teleskopowa rura ssaca do odkurzacza PL
DE19652647C1 (de) * 1996-12-18 1997-12-18 Fischer Rohrtechnik Gmbh Teleskopierbares Staubsauger-Saugrohr mit einem darin angeordneten, elektrisch leitenden Kabel
DE10314800B3 (de) * 2003-04-01 2004-05-19 Fischer Rohrtechnik Gmbh Teleskopierbares Staubsauger-Saugrohr mit Elektrokabel
DE102004004009B4 (de) * 2004-01-27 2006-02-02 Fischer Rohrtechnik Gmbh Teleskopierbares Staubsauger-Saugrohr mit einem in Kabelkanälen geführten elektrisch leitenden Kabel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2376651A1 (fr) * 1977-01-10 1978-08-04 Hoover Ltd Tuyau de nettoyage par aspiration
FR2379745A1 (fr) * 1977-02-07 1978-09-01 Dayco Corp Structure de tuyau renforce comprenant un tube helicoidalement ondule etirable et un element renforcateur par lequel passent des conducteurs electriques
GB2052348A (en) * 1979-05-29 1981-01-28 Vorwerk Co Interholding Telescopic guiding handle for a domestic appliance
EP0395908A1 (fr) * 1989-05-05 1990-11-07 Vorwerk & Co. Interholding GmbH Tige conductrice télescopique pour appareil d'entretien de sols
EP0433774A1 (fr) * 1989-12-18 1991-06-26 Progress Elektrogeräte GmbH Dispositif de fixation d'un conducteur électrique sur un tuyau et/ou un tuyau flexible d'aspirateur
EP0537457A1 (fr) * 1991-10-14 1993-04-21 AEG Hausgeräte GmbH Tuyau téléscopique pour aspirateur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8019985U1 (de) * 1980-07-25 1980-10-30 Vorwerk & Co Interholding Gmbh, 5600 Wuppertal Teleskopierbares saugrohr

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2376651A1 (fr) * 1977-01-10 1978-08-04 Hoover Ltd Tuyau de nettoyage par aspiration
FR2379745A1 (fr) * 1977-02-07 1978-09-01 Dayco Corp Structure de tuyau renforce comprenant un tube helicoidalement ondule etirable et un element renforcateur par lequel passent des conducteurs electriques
GB2052348A (en) * 1979-05-29 1981-01-28 Vorwerk Co Interholding Telescopic guiding handle for a domestic appliance
EP0395908A1 (fr) * 1989-05-05 1990-11-07 Vorwerk & Co. Interholding GmbH Tige conductrice télescopique pour appareil d'entretien de sols
EP0433774A1 (fr) * 1989-12-18 1991-06-26 Progress Elektrogeräte GmbH Dispositif de fixation d'un conducteur électrique sur un tuyau et/ou un tuyau flexible d'aspirateur
EP0537457A1 (fr) * 1991-10-14 1993-04-21 AEG Hausgeräte GmbH Tuyau téléscopique pour aspirateur

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0738492A1 (fr) * 1995-04-21 1996-10-23 Matsushita Electric Industrial Co., Ltd. Aspirateur
US5740583A (en) * 1995-04-21 1998-04-21 Matsushita Electric Industrial Co., Ltd. Electric vacuum cleaner
EP0835632A2 (fr) * 1996-08-13 1998-04-15 Bosch-Siemens HausgerÀ¤te GmbH Dispositif réglable de connexion électrique pour tuyau télescopique d'aspirateur
EP0835632A3 (fr) * 1996-08-13 1999-07-07 Bosch-Siemens HausgerÀ¤te GmbH Dispositif réglable de connexion électrique pour tuyau télescopique d'aspirateur
CN1781438B (zh) * 2004-11-22 2011-08-10 胡佛有限公司 真空吸尘器的伸长杆

Also Published As

Publication number Publication date
EP0664988B1 (fr) 1999-03-31
DE59408040D1 (de) 1999-05-06
DE4402835A1 (de) 1995-08-03
DE4402835C2 (de) 1997-09-18

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