US20190167057A1 - Vacuum-cleaner suction tube - Google Patents

Vacuum-cleaner suction tube Download PDF

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Publication number
US20190167057A1
US20190167057A1 US16/082,048 US201716082048A US2019167057A1 US 20190167057 A1 US20190167057 A1 US 20190167057A1 US 201716082048 A US201716082048 A US 201716082048A US 2019167057 A1 US2019167057 A1 US 2019167057A1
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US
United States
Prior art keywords
end sleeve
outer tube
tube
actuating mechanism
recess
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
US16/082,048
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English (en)
Inventor
Martin Cordes
Stephan 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
Assigned to FISCHER ROHRTECHNIK GMBH reassignment FISCHER ROHRTECHNIK GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CORDES, MARTIN, CORDES, STEPHAN
Publication of US20190167057A1 publication Critical patent/US20190167057A1/en
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
    • 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 concerns a vacuum cleaner suction tube with at least one inner tube, with at least one outer tube, with at least one actuating mechanism and with at least one end sleeve inserted into the outer tube.
  • the end sleeve is located between the inner tube and the outer tube and has at least one end sleeve recess.
  • the outer tube has at least one outer tube recess and the inner tube has a plurality of snap-in depressions.
  • the actuating mechanism passes through the outer tube recess, wherein the actuating mechanism comprises a base plate having at least one snap-in recess, wherein the actuating mechanism comprises at least one locking device, wherein the locking device is movable from a locking position into at least one unlocking position.
  • the locking device In the locking position, the locking device passes through the end sleeve recess in the direction of the inner tube, wherein the locking device is engaged with at least one snap-in depression on the inner tube in the locking position, and, in the unlocking position, a shifting of the inner tube relative to the outer tube is enabled by the locking device.
  • Vacuum cleaner suction tubes are known from the prior art in a variety of designs. Telescopic vacuum cleaner tubes offer the advantage that they can be adapted to the body size of a user or to different application situations during use for short or long distances by changing the length, on the one hand to enable ergonomic operation and on the other hand to ensure a multi-functional application of the vacuum cleaner for different vacuuming tasks.
  • such vacuum cleaner suction tubes usually comprise a plurality of tube segments which are arranged one behind the other and inserted into one another so that they can be telescoped relative to one another by axially shifting the tube segments.
  • the user manually moves the tube segments, i.e. pushes them axially into each other or on top of each other.
  • Various snap-in mechanisms are known for locking a certain position of the tube segments, which reliably prevent unwanted relative movement of the tube segments during use of the vacuum cleaner suction tube. Recesses in the walls of the tube segments are often used, which interact with corresponding blocking elements on the other tube segments.
  • vacuum cleaner suction tubes are often made of stainless steel, with add-on elements, for example, of plastic, attached at least in the two end areas of a vacuum cleaner suction tube.
  • the attachment elements are advantageously pushed onto the vacuum cleaner suction tube or inserted into the vacuum cleaner suction tube. A special requirement is the leak-free sealing between the vacuum cleaner suction tube and the attachment element.
  • the object of the invention is to provide a vacuum cleaner suction tube and a method for manufacturing a vacuum cleaner suction tube which enables a reliable and leak-free connection with an attachment element when using any type of plastic for the attachment element.
  • the aforementioned object is initially and essentially achieved by a vacuum cleaner suction tube according to the invention in that an axial shifting of the end sleeve relative to the outer tube is blocked by the actuating mechanism and that an inwardly directed radial movement of the actuating mechanism relative to the outer tube is blocked by the inner tube.
  • the individual components of the vacuum cleaner suction tube fix themselves mutually. It is not necessary that separate openings are formed on the outer tube to fix the end sleeve, as this is blocked in movement by the actuating mechanism.
  • One advantage of the invention is therefore that the sealing-ability of the vacuum cleaner suction tube is increased, since only the most necessary openings are formed on the outer tube, preferably made of stainless steel.
  • one design of the vacuum cleaner suction tube provides that an outwardly directed radial movement of the actuating mechanism relative to the outer tube is blocked by the outer tube. Conversely, an outwardly directed radial movement of the actuating mechanism relative to the outer tube is blocked by the actuating mechanism or by the base plate.
  • the base plate is dimensioned in such a way that the actuating mechanism passes through the recess in the outer tube in an outward direction, but the base plate remains inside the outer tube and strikes the wall of the outer tube. It is therefore not possible to push or pull the actuating mechanism out of the outer tube in the radial direction.
  • the actuating mechanism can lock the end sleeve in position in various ways.
  • the end sleeve recess has approximately the same size as the dimensions of the base plate, so that the base plate engages positively into the end sleeve recess.
  • the thickness of the base plate i.e., the extension of the base plate in the radial direction, corresponds approximately to the thickness of the end sleeve.
  • the base plate can therefore be lowered into the end sleeve recess so that the base plate is aligned with the end sleeve when viewed in the axial direction, i.e. the base plate does not project beyond the edge of the end sleeve facing the inner tube.
  • the end sleeve can be inserted into the outer tube during production of the vacuum cleaner suction tube, wherein the actuating mechanism is already located in the outer tube.
  • the end sleeve is inserted into the outer tube until the corresponding elements, i.e. the base plate of the actuating mechanism and the end sleeve recess, engage with one another. If the end sleeve receives an impulse of movement in this position, the contours of the end sleeve recess hit the base plate and movement is prevented.
  • the thicker the material of the end sleeve the deeper the end sleeve recess can be.
  • the area with which the end sleeve is supported on the base plate of the actuating mechanism via the end sleeve recess is also increased, insofar as the material thickness of the base plate, i.e. the height of the base plate, corresponds to the material thickness of the end sleeve.
  • the installation effort of the vacuum cleaner suction tube increases, since the end sleeve must be guided past the base plate during insertion before the base plate can engage into the end sleeve recess. The skilled person must therefore be careful to find a compromise between material thickness and simple installation.
  • the end sleeve recess does not necessarily have to depict a complete recess.
  • One possibility of design is, for example, a depression into which the base plate can engage, wherein recesses can be formed in the depression so that only the elements of the locking device pass through the end sleeve recess, which contribute to a locking of the vacuum cleaner suction tube.
  • the actuating mechanism is frictionally connected to the end sleeve so that axial movement of the end sleeve relative to the outer tube is blocked. In this manner, the end sleeve is simply inserted into the outer tube, wherein the actuating mechanism or the base plate of the actuating mechanism exerts sufficient friction on the end sleeve so that the end sleeve can no longer be easily removed from the outer tube.
  • the size and design of the end sleeve recess is irrelevant as long as it ensures that, in the locking position, the locking device can pass through the end sleeve recess towards the inner tube, so that, in the locking position, the locking device engages with at least one snap-in depression on the inner tube and a movement of outer tube and inner tube relative to one another is blocked.
  • the end sleeve has elongated crosspieces which act as spacers from outer tube to end sleeve, wherein the end sleeve is then only connected to the outer tube via the crosspieces.
  • the material thickness of the base plate or the actuating mechanism can be selected independently of the end sleeve. If the base plate is relatively thick, it may not be possible to insert the end sleeve without damage.
  • the design of the elongated crosspieces whose arrangement can be selected so that the base plate is arranged at a distance of two crosspieces, can be selected so that the end sleeve can still be inserted into the outer tube, but the friction between end sleeve and base plate is so great that removal of the end sleeve is not easily possible.
  • the arrangement and number of crosspieces can be more or less freely chosen.
  • a recess or material removal in the end sleeve at the point where the actuating mechanism is connected to the end sleeve is also conceivable, so that there are no crosspieces at all, but the end sleeve only has a slightly smaller material thickness in the area where the end sleeve comes into contact with the base plate.
  • a further design of the vacuum cleaner suction tube provides that the end sleeve has an insertion end and an outer end and that the insertion end is conical in at least one region.
  • the region in which the insertion end is conical should be approximately as large as the width of the base plate.
  • a further advantageous design of the vacuum cleaner suction tube provides for at least one stop at the outer end.
  • the stop can cover only a small area or several small areas of the outer end.
  • the stop is formed by an enlargement in the outer diameter of the end sleeve.
  • the stop is therefore designed circumferentially.
  • the stop can be designed in such a manner that the material is curved in the region of the enlarged outer diameter by a channel directed towards the insertion end.
  • the end sleeve thus does not only strike at the end of the outer tube, but surrounds the end of the outer tube. Since the outer tube is usually made of stainless steel or another metal, the ends of the outer tube can be sharp-edged.
  • the channel shape of the stop encloses the sharp edge so that the risk of injury is minimized.
  • the material in the region of the enlarged outer diameter does not have to be the same material as the rest of the end sleeve.
  • a foam or rubber compound can additionally increase the sealing-ability at the end of the tube and accordingly also further reduce the risk of injury, as the material is softer than conventional plastics.
  • the outer tube has exactly one outer tube recess.
  • One of the advantages of the vacuum cleaner suction tube according to the invention is that the end sleeve is not attached separately to the outer tube, but is held in the outer tube by the interaction of the individual components. To improve the pressure loss and flow characteristics of a vacuum cleaner suction tube, as few openings as possible in the outer tube are advantageous.
  • only one recess is necessary as long as no further components have to be attached to the outer tube.
  • the locking device can interact with the inner tube, on the one hand, and the components can be securely connected to one another on the other hand.
  • a further design of the vacuum cleaner suction tube provides that the inner tube comprises at least one longitudinal groove and that at least one tongue corresponding to the longitudinal groove is formed on the end sleeve so that the inner tube is guided by the end sleeve in the outer tube.
  • the inner tube comprises at least one longitudinal groove and that at least one tongue corresponding to the longitudinal groove is formed on the end sleeve so that the inner tube is guided by the end sleeve in the outer tube.
  • the inner tube comprises at least one longitudinal groove and that at least one tongue corresponding to the longitudinal groove is formed on the outer tube so that the inner tube is guided from within the outer tube.
  • the longitudinal groove can be formed, for example, inside the outer tube, wherein the corresponding tongue is formed on the inner tube.
  • the groove on the outer tube for example, can be implemented by deformation of the tube or by two folds in the outer tube, so that a V-shaped groove is created in the outer tube.
  • the invention also relates to a method for manufacturing a vacuum cleaner suction tube, with at least one inner tube, with at least one outer tube, with at least one actuating mechanism and with at least one end sleeve, wherein the end sleeve has at least one end sleeve recess, wherein the outer tube has at least one outer tube recess, wherein the inner tube has a plurality of snap-in depressions and wherein the actuating mechanism has a base plate having at least one snap-in recess.
  • the object described at the outset is essentially achieved by the method in that the actuating mechanism is led from the inside of the outer tube through the outer tube recess, that the end sleeve is inserted into the outer tube and is blocked in axial movement by the actuating mechanism, and that the inner tube is inserted into the end sleeve and the actuating mechanism is blocked in radial movement by the inner tube.
  • a logical sequence for assembling the vacuum cleaner suction tube is divided into the following steps: inserting the actuation mechanism into the outer tube, inserting the end sleeve into the outer tube and locking the end sleeve using the actuation mechanism and finally inserting the inner tube. To ensure a secure connection of the elements of the vacuum cleaner suction tube, no further elements are necessary, as the individual components hold one another.
  • FIG. 1 is a schematic representation of an assembled vacuum cleaner suction tube
  • FIG. 2 is a perspective view of a part of an actuating mechanism
  • FIG. 3 is an embodiment of an end sleeve in a perspective view
  • FIG. 4 is the embodiment according to FIG. 3 with an inserted part of the embodiment of the actuating mechanism according to FIG. 2 ,
  • FIG. 5 is a sectional view of an embodiment of the vacuum cleaner suction tube
  • FIGS. 6 a to 6 c are schematic representations of the inventive method for manufacturing a vacuum cleaner suction tube.
  • FIG. 1 shows a schematic representation of an embodiment of a vacuum cleaner suction tube 1 .
  • the vacuum cleaner suction tube 1 has an inner tube 2 , an outer tube 3 , an actuating mechanism 4 and an end sleeve 5 .
  • An end sleeve recess 6 is formed in the end sleeve 5 and an outer tube recess 7 is formed in the outer tube 3 .
  • the inner tube 2 has snap-in depressions 8 which allow the actuating mechanism 4 to engage in the snap-in depressions 8 by means of a locking device in order to block the relative displacement of inner tube 2 and outer tube 3 to one another.
  • the actuating mechanism 4 has a base plate 10 with two snap-in recesses 9 (not shown in FIG.
  • the end sleeve 5 is inserted with its insertion end 11 into the outer tube 3 in such a manner that only its outer end 12 emerges from the outer tube 3 .
  • a stop 13 is provided at the outer end 12 of the end sleeve 5 , which is formed by an enlargement of the outer diameter D of the end sleeve.
  • the individual components interact in such a manner that they fix one another.
  • the base plate 10 of the actuating mechanism is dimensioned so that it is larger than the outer tube recess 7 , so that the actuating mechanism 4 cannot be pushed out of the outer tube 3 through the outer tube recess 7 from the inside.
  • the end sleeve recess 6 of the end sleeve 5 interacts with the base plate 10 of the actuating mechanism 4 , so that an axial displacement of the end sleeve 5 is blocked by the actuating mechanism 4 .
  • the inner tube 2 prevents the actuating mechanism 4 from being pushed into the outer tube 3 in the radial direction. All components therefore hold one another.
  • FIG. 2 shows the base body 14 of the actuation mechanism 4 , comprising the base plate 10 and a mount 15 for the locking device of the actuating mechanism 4 .
  • Two snap-in recesses 9 are formed in the base plate 10 , through which the locking device (not shown here) can pass to engage the snap-in depressions 8 of the inner tube 2 .
  • the base plate is adapted to the shape of the tube so that the base plate has an arch 16 .
  • FIG. 3 shows an embodiment of an end sleeve 5 .
  • Crosspieces 18 are formed on the inside 17 of the end sleeve 5 , which serve to stabilize the end sleeve 5 . In addition, they reduce the bearing surface of the inserted inner tube 2 in the end sleeve 5 , which additionally reduces friction. This makes it easier to move the inner tube 2 within the end sleeve 5 .
  • the movement in the outer tube 3 is correspondingly smoother, since the inner diameter of the end sleeve 5 is smaller than the inner diameter of the outer tube 3
  • a tongue 19 is formed on the inside 17 of the end sleeve 5 , which corresponds with a groove formed on the inner tube 2 .
  • the tongue 19 is arranged opposite the end sleeve recess 6 .
  • the end sleeve recess 6 is only a recess in the material of the end sleeve 5
  • two smaller recesses 20 are formed in the end sleeve recess.
  • the two recesses 20 correspond to the two snap-in recesses 9 in the base plate 10 .
  • a tapering cone-shaped region 21 is formed at the insertion end 11 , which begins at the end sleeve recess 6 and ends at the end of the end sleeve 5 at the insertion end 11 .
  • the cone-shaped region 21 is used to simplify the insertion of the end sleeve 5 into the outer tube 3 when the actuating mechanism 4 is already arranged in the outer tube 3 .
  • the actuating mechanism 4 can slide onto the cone-shaped region 21 during insertion and does not already block the path of the end sleeve 5 during insertion.
  • the stop 13 is turned towards the insertion end 11 . In this manner, the stop 13 encloses the end of the outer tube 3 (not shown here) when the end sleeve 5 is completely inserted into the outer tube 3 .
  • FIG. 4 shows the base body 14 of the actuating mechanism according to FIG. 2 which is inserted into the end sleeve recess 6 of the end sleeve 5 according to FIG. 3 .
  • the end sleeve recess 6 is designed to fit exactly onto the base plate 10 .
  • the end sleeve 5 has no room for movement in the outer tube 3 (not shown here) when the actuating mechanism 4 is already arranged in the outer tube 3 .
  • FIG. 4 also shows that the cone-shaped region 21 simplifies the insertion of the end sleeve 5 into the outer tube 3 .
  • the cone-shaped region 21 serves as a ramp for the actuating mechanism 4 . As the height increases, friction increases and moving the end sleeve 5 further into the outer tube 3 becomes more difficult. Without the cone-shaped region 21 , it is only possible to move the end sleeve 5 past the actuating mechanism 4 to a limited extent.
  • FIG. 5 shows a sectional view of a vacuum cleaner suction tube 1 in which all components, i.e. inner tube 2 , outer tube 3 , actuating mechanism 4 and end sleeve 5 are connected to one another.
  • the outer diameter of the area of the inner tube 2 that is not intended to be inserted into the outer tube 3 is increased. This way a simple stop 22 is implemented.
  • both the outer and inner diameters of the outer tube 3 are enlarged in one section 23 .
  • the end sleeve 5 is arranged in this section 23 .
  • the inner and outer diameters are slightly smaller than in section 23 , so that too great of a distance does not occur between inner tube 2 and outer tube 3 , which could lead to unfavorable flow characteristics during the suction process.
  • FIGS. 6 a to 6 b show a schematic representation of a method for manufacturing a vacuum cleaner suction tube 1 .
  • the actuating mechanism 4 is inserted into the outer tube 3 and lead through the outer tube recess 7 . Due to the larger base plate 10 , the actuating mechanism 4 cannot be pushed out of the outer tube 3 from the inside.
  • the end sleeve 5 is inserted into the outer tube 3 , wherein the actuating mechanism 4 is already arranged in the outer tube.
  • the end sleeve 5 must be guided past the base plate 10 of the actuating mechanism 4 during insertion.
  • the only possibility for the end sleeve 5 to be guided past the base plate 10 is a slight elastic deformation, which is strongly exaggerated in FIG. 6 b .
  • the end sleeve 5 is inserted into the outer tube 3 until the base plate 10 engages into the end sleeve recess 6 .
  • FIG. 6 c shows how the end sleeve 5 is already completely arranged in the outer tube 3 .
  • the actuating mechanism 4 prevents further movement of the end sleeve 5 into and out of the outer tube 3 , in addition, the stop 13 blocks further movement into the outer tube 3 , and finally the inner tube 2 is inserted into the end sleeve 5 and also the outer tube 3 .
  • the inner tube 2 prevents the actuating mechanism 4 from being pushed or pulled inwards into the outer tube 3 .
  • the individual components fix one another after completion of the method.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
US16/082,048 2016-03-12 2017-03-06 Vacuum-cleaner suction tube Abandoned US20190167057A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016104557.8A DE102016104557A1 (de) 2016-03-12 2016-03-12 Staubsauger-Saugrohr
DE102016104557.8 2016-03-12
PCT/EP2017/055161 WO2017157707A1 (fr) 2016-03-12 2017-03-06 Tuyau d'aspiration d'aspirateur

Publications (1)

Publication Number Publication Date
US20190167057A1 true US20190167057A1 (en) 2019-06-06

Family

ID=58228159

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/082,048 Abandoned US20190167057A1 (en) 2016-03-12 2017-03-06 Vacuum-cleaner suction tube

Country Status (9)

Country Link
US (1) US20190167057A1 (fr)
EP (1) EP3426120B1 (fr)
CN (1) CN107613828B (fr)
DE (1) DE102016104557A1 (fr)
EA (1) EA035939B1 (fr)
HK (1) HK1249382A1 (fr)
HU (1) HUE051290T2 (fr)
SI (1) SI3426120T1 (fr)
WO (1) WO2017157707A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2621333A (en) * 2022-08-08 2024-02-14 Numatic Int Ltd Vacuum cleaner wand tube assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700108591A1 (it) * 2017-09-28 2019-03-28 Omec Spa Manicotto per una prolunga telescopica per un elettrodomestico

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692782A (en) * 1995-08-05 1997-12-02 Fischer-Rohtechnik Gmbh Telescopable vacuum cleaner suction pipe
US8038173B2 (en) * 2006-03-31 2011-10-18 Omec S.P.A. Telescopic extension for an electric household appliance

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8707887U1 (fr) * 1987-06-03 1987-08-06 Carl Froh Roehrenwerk Gmbh & Co, 5768 Sundern, De
DE19524290C1 (de) * 1995-07-06 1996-08-14 Froh Roehren Teleskopierbares Staubsauger-Saugrohr
CN2406605Y (zh) * 2000-01-18 2000-11-22 余进兴 吸尘器上的无级吸尘管
CN1307931C (zh) * 2005-02-05 2007-04-04 马卫宏 伸缩式吸尘器吸管
EP2606801B1 (fr) * 2011-12-19 2021-01-13 fischer Rohrtechnik GmbH Tuyau d'aspiration pour aspirateur
DE102013211766A1 (de) * 2013-04-16 2014-10-16 Fischer Rohrtechnik Gmbh Rastvorrichtung für ein Staubsauger-Saugrohr
DE102013213212A1 (de) * 2013-07-05 2015-01-08 Fischer Rohrtechnik Gmbh Staubsauger-Saugrohr

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692782A (en) * 1995-08-05 1997-12-02 Fischer-Rohtechnik Gmbh Telescopable vacuum cleaner suction pipe
US8038173B2 (en) * 2006-03-31 2011-10-18 Omec S.P.A. Telescopic extension for an electric household appliance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2621333A (en) * 2022-08-08 2024-02-14 Numatic Int Ltd Vacuum cleaner wand tube assembly

Also Published As

Publication number Publication date
SI3426120T1 (sl) 2020-08-31
EP3426120B1 (fr) 2020-04-15
HK1249382A1 (zh) 2018-11-02
HUE051290T2 (hu) 2021-03-01
EP3426120A1 (fr) 2019-01-16
EA035939B1 (ru) 2020-09-03
WO2017157707A1 (fr) 2017-09-21
DE102016104557A1 (de) 2017-09-14
EA201891784A1 (ru) 2019-03-29
CN107613828B (zh) 2020-07-24
CN107613828A (zh) 2018-01-19

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