EP1925773B1 - Vorrichtung zum Einstellen der Spannung der Rückzugfeder von Moskitonetzen, Rollos und dergleichen - Google Patents

Vorrichtung zum Einstellen der Spannung der Rückzugfeder von Moskitonetzen, Rollos und dergleichen Download PDF

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Publication number
EP1925773B1
EP1925773B1 EP07425714A EP07425714A EP1925773B1 EP 1925773 B1 EP1925773 B1 EP 1925773B1 EP 07425714 A EP07425714 A EP 07425714A EP 07425714 A EP07425714 A EP 07425714A EP 1925773 B1 EP1925773 B1 EP 1925773B1
Authority
EP
European Patent Office
Prior art keywords
return spring
sheet
head
roller
gear wheel
Prior art date
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Application number
EP07425714A
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English (en)
French (fr)
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EP1925773A1 (de
Inventor
Claudio Nappo
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/60—Spring drums operated only by closure members
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/52—Devices affording protection against insects, e.g. fly screens; Mesh windows for other purposes
    • E06B9/54—Roller fly screens
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/40—Roller blinds
    • E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
    • E06B9/50—Bearings specially adapted therefor

Definitions

  • the present invention relates to a device for adjusting the tension of the return spring of mosquito nets, roller curtains or the like.
  • a fabric, a sheet or a net is wound and unwound on a sheet-bearing roller mounted rotatably at its ends to the heads of a roller shutter box.
  • the sheet or the like has a terminal for stiffening and loading it.
  • a torsion-operated return spring co-operates with the sheet-bearing roller, so that when the sheet or the like is unwound, the spring is further loaded with an action antagonist to the unwinding. In this way, the reverse rotation of the sheet-bearing roller, and hence the winding of the sheet or the like, takes place thanks to the release of the elastic energy of the spring stored by the return spring in the unwinding phase.
  • the return spring that is under tension serves the function of allowing both to rewind the sheet and to maintain the sheet tensioned. If the tension of the spring is insufficient, it may occur that the sheet fails to rewind completely or remains loose.
  • An object of the present invention is to allow an adjustment of the return spring of a mosquito net or the like even after its installation, without requiring its disassembly.
  • Another object of the invention is to allow an adjustment of the return spring of a mosquito net or the like with precision and in a wide interval.
  • a device for adjusting the tension of the return spring of a mosquito net, a roller curtain or the like comprises the features mentioned in the appended claim.
  • the device enables to adjust the tension of the return spring of the mosquito net or the like in micrometric fashion, and additional said operation can be performed even after the mosquito net or the like is mounted.
  • the technician realises the need for a greater and smaller tension of the return spring. Thanks to the device according to the present invention, (s)he can proceed with said adjustment, once the installation is complete, using a simple tool, such as a hexagon ring wrench or Allen wrench.
  • the device according to the invention allows a reduction in installation times and a more precise adjustment of the tension of the spring, considering that said tension is not always foreseeable before installation because there are multiple factors that determine tension. Said factors are, for example, the variability of the width and height of the mosquito net or the like, the number of turns of the spring, friction on the guides, and other factors besides.
  • FIG. 1 With reference initially to the partial and partially exploded axonometric view of a mosquito net of Figure 1 , the figure shows a sheet-bearing roller 1, a sheet 2 or the like, having an end integral with the sheet-bearing roller 1, a roller shutter box 3 and only one head 4 thereof, the one with return spring (not shown).
  • the other parts comprising the mosquito net, i.e. the rest of the sheet 1 with end terminal opposite to the end connected to the sheet-bearing roller, the other head of the roller shutter box, i.e. the one with the bushing, and the sliding frame of the mosquito net.
  • the sheet-bearing roller 1 has a section bar 5 internally grooved for engagement with the head 4 with return spring and with a head with bushing, not shown in the drawings.
  • the head 4 with return spring is provided with a device for adjusting the tension of the return spring of the of the sheet or the like according to the invention, shown exploded in Figure 2 according to a longitudinal direction of the sheet-bearing roller.
  • the device for adjusting the tension of the return spring according to the invention obtained on the head 4 with return spring, comprises a shaped piece 7 with substantially known conformation, hence not described in detail herein.
  • the shaped piece 7 is such as to constitute a closing element for the roller shutter box 3 shown in Figure 1 .
  • the shaped piece 7 of the head 4 centrally presents a cylindrical seat 8 ending in a stop 9.
  • a through hole 11 On an outer wall 10 of the shaped piece 7 of the head 4 is obtained a through hole 11, whilst within the header 4 is formed a dead hole 12.
  • the through hole 11 and the dead hole 12 constitute end bearing seats of a screw 13.
  • the screw 13 preferably having a hexagonal socket head 130, is engaged with an internally hollow gear wheel 14, housed rotatably in the cylindrical seat 8 of the shaped piece 7 of the head 4.
  • the screw 13 and the gear wheel 14 constitute a worm screw assembly, which, like other parts of the mosquito net or the like, can conveniently be made of plastic material, preferably charged nylon.
  • the gear wheel 14 internally presents a circumferential abutment 15.
  • a helical spring 16 Within the gear wheel 14 is positioned a helical spring 16, preferably made of harmonic steel, having ends 160 and 161.
  • the ends 160 and 161 of the helical spring are situated at one side and the other of the circumferential abutment 15 of the gear wheel 14.
  • the function of the helical spring 16 will be readily apparent in the remainder of the description.
  • a first support element 17 having a cylindrical base portion 18, an intermediate cylindrical portion 19 and a tapered terminal portion 20.
  • the base cylindrical portion 18 of the support element 17 is received within the gear wheel 14 until the stop element 9 of the seat 8 of the head 4 snaps on the tapered terminal portion 20 of the support element 17.
  • a sleeve or rotor 21 is positioned on the support element 17 positioned a sleeve or rotor 21.
  • the rotor 21 comprises a tubular portion 22 and a portion 23 with circular crown shape.
  • the tubular portion 22 is grooved externally and substantially cylindrical in its interior.
  • the grooved outer profile of the tubular portion 22 is adapted to be engaged, without possibility of rotating, in the internally grooved section bar 5, whilst the substantially cylindrical inner surface of the tubular portion 22 is adapted to receive rotatably the intermediate cylindrical portion 19 of the support element 17.
  • the device for adjusting the return spring according to the invention is positioned, as described above, on the head 4.
  • the head 4 is fastened to the ends of the roller shutter box 3, e.g. by means of screws, so that the tubular portion 22 of the rotor 21 is engaged with the section bar 5 of the sheet-bearing roller 1.
  • On the terminal tapered portion 20 of the support element 17 is fixed a return spring 25 that enables the rotation of the sheet-bearing roller 1.
  • the opposite head not shown, will be applied to the side of the roller shutter box 3 opposite the side of the head 4, with the related bushing inserted in the section bar 5.
  • the opposite head is simply for the abutment of the sheet-bearing roller 1, i.e. without the device for adjusting the return spring.
  • the return spring 25 whereto is anchored at one end the tapered terminal 20 of the support element 17 passes through the tubular portion 22 of the rotor 21 within the section bar 5 of the sheet-bearing roller 1 (not shown in Figure 2 ).
  • the other end of the spring is fastened to a second support element 170, slidable relative to the section bar 5 of the sheet-bearing roller 1, but without possibility of rotating relative thereto, thanks to the externally grooved conformation of the portion 220.
  • the support element 17 is always integral with the gear wheel 14 by means of the stop element 15 situated circumferentially to the interior of the gear wheel 14.
  • the force couples that act on the support element 17 cannot produce rotation because, through a slot 24 of the cylindrical base portion 18 act on the ends 160 and 161 of the helical spring 16, tightening it around the seat 8 of the head 4.
  • the force couples acting on the gear wheel 14 instead tend to widen the torsion spring 16 and hence produce rotation in both directions.
  • the gear wheel 14 cannot rotate spontaneously because it engaged with the screw 13.
  • the helical spring 16 serves the purpose of keeping the return spring uncoupled from the gear wheel, whilst the support element 17 is normally always torsion stressed because it is integral with the return spring 25.
  • the helical spring 16 serves the purpose of coupling the return spring 25 with the gear wheel 14. If the gear wheel 14 is made to rotate in the direction in which the return spring 25 is loaded, an adjustment is made whereby the sheet 2, supported by the sheet-bearing roller 1, is rewound with greater speed. Inverting the rotation of the screw 13, the reverse adjustment is made and the sheet 2 is rewound at slower speed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Catching Or Destruction (AREA)
  • Springs (AREA)

Claims (1)

  1. Vorrichtung zum Einstellen der Spannung der Rückzugfeder von einem Moskitonetz, eines Rollos oder dergleichen, enthaltend eine Bahnträgerrolle (1), auf welche eine Bahn (2) eines Moskitonetzes, eines Rollos oder dergleichen in der Umdrehung der Bahnträgerrolle (1) gewickelt ist, drehbar um ihre eigene Längsachse durch die Wirkung einer Rückzugfeder (25) montiert an einem Kopfstück (4) mit Rückzugsfeder (25) und an einem Kopfstück mit Buchse in einem Rollenschliessgehäuse (3), in der Lage, die Bahnträgerrolle (1) und die betreffende Bahn (2) zu umgeben, wobei die genannte Rückzugfeder (25) mithilfe einer Hülse (21) im Inneren der Bahnträgerrolle (1) montiert und mit einem ihrer Enden an einem ersten Trägerelement (17) verankert ist, und zwar in der Nähe des Kopfstückes (4) mit der Rückzugfeder (25), und mit dem anderen Ende an einem zweiten Trägerelement (170), in der Lage, sich ohne Umdrehung im Inneren der Bahnträgerrolle (1) zu verschieben, bei welcher das genannte Kopfstück (4) mit der Rückzugfeder (25) eine Endlosschraubengruppe enthält, die von aussen her mit montiertem Moskitonetz betätigt werden kann, um die Spannung der Rückzugfeder (25) zu verändern, und bei welcher die Endlosschraubengruppe ein innen hohles Zahnrad (14) enthält, montiert in einem zylindrischen Sitz (8) des Kopfstückes (4) mit der Rückzugfeder (25), und eine in das Zahnrad (14) greifende und auf demselben Kopfstück (4) mit Rückholfeder (25) liegende Endlosschraube (13), und zwar auf solche Weise, dass die Endlosschraube (13) von ausserhalb des Kopfstückes (4) mit Rückzugfeder (25) ein- und ausgeschraubt werden kann, dadurch gekennzeichnet, dass die Vorrichtung ebenfalls eine Schraubenfeder (16) enthält, angeordnet im Inneren des Zahnrades (14) und mit ihren eigenen Enden (160, 161) auf der einen Seite und der anderen Seite eines umlaufenden Anschlagelementes (15) des Zahnrades (14) liegend, wobei sie in der Lage ist, die genannte Rückzugfeder (25) während des normalen Auf- oder Abwickelns der Bahn (2) von dem Zahnrad (14) abzukuppeln und die genannte Rückzugfeder (25) während des Einstellens der Rückzugfeder (25) mit dem Zahnrad (14) zu kuppeln.
EP07425714A 2006-11-14 2007-11-13 Vorrichtung zum Einstellen der Spannung der Rückzugfeder von Moskitonetzen, Rollos und dergleichen Active EP1925773B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000619A ITRM20060619A1 (it) 2006-11-14 2006-11-14 Dispositivo di regolazione della tensione della molla di richiamo di zanzariera tenda a rullo o simile

Publications (2)

Publication Number Publication Date
EP1925773A1 EP1925773A1 (de) 2008-05-28
EP1925773B1 true EP1925773B1 (de) 2009-07-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07425714A Active EP1925773B1 (de) 2006-11-14 2007-11-13 Vorrichtung zum Einstellen der Spannung der Rückzugfeder von Moskitonetzen, Rollos und dergleichen

Country Status (5)

Country Link
EP (1) EP1925773B1 (de)
AT (1) ATE435962T1 (de)
DE (1) DE602007001513D1 (de)
ES (1) ES2329842T3 (de)
IT (1) ITRM20060619A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10231435B2 (en) 2016-02-25 2019-03-19 Marilyn Barrett Pet toy

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101050948B1 (ko) 2010-12-15 2011-07-20 (주) 코인씨앤엠 반자동 롤 스크린의 장력조절구
US9714539B2 (en) 2011-01-06 2017-07-25 Hunter Douglas Industries Bv Winding shaft drive for operating a retractable architectural covering and shaft brake module for use therein
IT201600092253A1 (it) * 2016-09-15 2018-03-15 Palagina S R L Tenda con telo avvolgibile dotata di un dispositivo di regolazione della tensione
IT202100028616A1 (it) * 2021-11-10 2023-05-10 Palagina S R L Dispositivo di telo avvolgibile

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2060676A (en) * 1935-05-21 1936-11-10 Rolscreen Co Roller spring adjusting means
JPS6132076Y2 (de) * 1980-08-29 1986-09-18
US5419010A (en) * 1993-05-03 1995-05-30 Wayne-Dalton Corp. Compact counterbalancing system for sectional doors
US5865235A (en) * 1997-01-23 1999-02-02 Overhead Door Corporation Counterbalance mechanism for vertical opening door
US6125582A (en) * 1999-05-17 2000-10-03 Overhead Door Corporation Spring winder support for door counterbalance system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10231435B2 (en) 2016-02-25 2019-03-19 Marilyn Barrett Pet toy

Also Published As

Publication number Publication date
ITRM20060619A1 (it) 2008-05-15
ES2329842T3 (es) 2009-12-01
EP1925773A1 (de) 2008-05-28
ATE435962T1 (de) 2009-07-15
DE602007001513D1 (de) 2009-08-20

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