DE1659696A1 - Winding roll for blinds - Google Patents

Description

Ernst Dolena company in Vienna

Winding roll for blinds

The invention relates to a winding roll for blinds, the slats of which are suspended by means of ladders and can be moved by an M or more pulling elements engaging the lowest slat »where the pulling element can be wound or unwound on a spool ·

For a long time one has used sum pull-up and Lowering of blinds a similar winding roll as with Hollädent on the one on the lowest slat of the blind attached tension element is wound up and unwound. To the blind To be able to hold onto in any position when lowering, various solutions have already become known, with However, a flexible steel strip is required as the tension element · -j

In one of these known designs is in the bobbin a pin that can be moved under spring force is inserted through the the steel band is pressed against the inside of the spool, eoffern the steel belt is taut as a result of a sufficiently large tensile force is excited. When the tensile stress is released, the steel band forms the well-known loose loops around the bobbin, whereby the spring-loaded pin is pushed out of the bobbin will »The movement of; Pen can now through further mechanical devices or electrical circuits for Bio-booking of the blind position reached.

Principle is, however, no longer apply to 3cxtil-_oder Kunatotoffbänder, ά & dieaa come off while easing the tension non ve »» -Spulenkürpsr and no © Ioögii Schleiion urn form don spool. Andereroeita enjoy verifiable üiexültüador, especially £ ravirabänder _r special 2-ugelenonto for Außunjalousien! Popularity because with them the usual noise kai atahlbiiadern ο ntwiclclung 'due to wind or Stura v / egfiillt. Also an icing of the Zugelciasnte i3- at

the Errinduiij iat ejs, a roller blind for blinds on the other hand, the XUr textile tapes are also used can »ßioe wird.boi a winding roll of the above mentioned Aft üaduroh received that one .; movable by the pulling element Locking pawl is provided, which when moving the blind through Iluculaaoen the ^ u ^ opension in tension element on a H & otvorsprun ^ de.-; üpulenkürpsrs can be put on «By putting on the pawl on the üastvoraprung becomes a. ! f / pus— turning the üpulcnlcürpora prevented and the blinds in it Achieved oleo fect efect in the event of renewed tensile stress is daa iJu ^ elsmcnb punished again, wodurcli the pawl is pushed out of the upoiu division Dar ijpulcni: ürper can aluo be rotated further »as long as the tensile stress arJUilt.

In v / eitorei 'Aua ^ aataltun ^ the lirfindung is provided, that the superclinle is in a housing surrounding the winding roll is pivoted and a cranked arm onv / eis ^ which rests on the tension element. Here, too, can be tense at a met Γ

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Pulling element, the pawl does not engage in the locking projection « Only when the tensile stress is removed can the pawl move into Pivot the position in which the position of the blind is blocked will. IULe pawl can also be designed to be resilient.

A further embodiment of the invention provides that the pawl, which can preferably be pushed forward in the housing, can be placed against the tension element under the action of a spring. χ _{η in} this case, the ^ spring force can be chosen so that to actuate M

the blind requires a predetermined pulling force.

The; Invention will now be based on the drawing, the two Exemplary embodiments of the invention show, described in more detail.

Pig. Fig. 1 is a top plan view of one of the present invention Winding roll, jPig, 2 is a longitudinal section through the winding roll according to line II-II in Pig. 1, jPig. 3 is a cross section according to line IDL-III in Pig. 2 undjpig. 4 is a schematic Cross section through another embodiment of the invention.

In the first embodiment, the Pig. 1, 2 and 3 shown is.t »with 1 the bobbin of the winding roll ~ | denotes, on which the tension element 2 is wound up · * and. The fastening element 2 can be both a steel band and a textile band. Preferably, a reviraband 3 mm wide and 0.2 mm thick is used as the tension element, which allows the blinds to be operated with little noise. In addition, the coils 3 for the conductor strip 4 of the shutter lamella are provided on the coil body t. The coil body 1 is iejtaöejt at 5 in plain bearings, which are primarily made of plastic.

In the pulp "3 there are slots 6 for laying the ladder tape

f t 009P? 7 / nR1ß r

provided · The oil lasers for bobbin 1 are in a housing 7 supported, which essentially surrounds the winding roll

Iq housing 7 is a pawl 9 by means of an axis 8 pivoted. You pawl 9 has a cranked one Arm 10, the ends 11 of which are rounded or spherical from is formed and on tension element 2 is applied »As Fig. 1 and 2 seigt, the pawl 9 and its bent arm 10 consists of two parallel and spaced apart legs 9a, 9b, 10a, 10b, which are connected to each other by wuorotege 9c, 10c Bind »Everyone the leg 9a * 9b has a locking ridge 12 with. one Raotvorsprung 13 one of the two Hastscholben 14 cooperates. The Eastschoiben 14 are coaxial with the bobbin 1 dome and formed in one piece. -

When the blind is lowered, the tension element 2 sags loosely and the pawl 9 is pivoted downward due to its own weight, where it prevents the coil body 1 from rotating to the left by engaging in the box disc. 3, this position of the tension element is denoted by 16. If the blind is now to be pulled up, a tensile stress is applied to the tension element ». which is directed essentially downwards, also practiced. With simple blinds, this tensile stress is carried out by hand, but with heavy and large blinds it can also be replaced by an electric drive. As a result of the tensile stress, the tensile element Z is tightened and pushed to the left, as shown in FIG. 3, where it is in the radially drawn position 17. This allows the arm 10 dOr pawl 9 naoh left di simultaneously ·

The position shown in dashed lines is pivoted, causing the locking cock 12 of the pawl 9 releases the Eastvoraprung 13 »The" * ■ Spool 1 can thereby seal the Pfeilea 15, so to the left, twisted v / earth, the tension element 2 being unwound from the bobbin 1. When the blind is raised to the desired position, the tension is released, and the dead weight of the pawl pushes the pulling element 2 from the Position 17 la position 16 back, the ratchet tooth Prevents the bobbin 1 from turning white. Tuck swivel movement the pawl 9 can be supported by a spring However, it is also possible to design the pawl 9 and its era to be resilient. In particular, larger blinds require a large I'esthaltGkraft

In #ig. 4 becomes a further embodiment of the invention shown. A pulling element 19 is wound on the bobbin 18, on a spring-loaded pawl that can be displaced in the housing 20 21 is present. The pawl 21 has a locking lug 22, which cooperates with a hasty projection 23 of the bobbin 18. The tension element 19 is shown with full lines in that position 24 when no tension is being exerted. Here, the locking lug 22 of the locking pawl 21 prevents twisting of the bobbin 18 counterclockwise. Now takes place A tensile stress on the tensile element 19 »will be the first Tension element tightened, whereby the pawl counteracts the action the bruokfoder 26 is pushed to the left · boron hurricane projection 23 can therefore be rotated further, with the blind is derabgelaaeön ».

The erfindun ^ DaeriäSo üinvidht-num applies only to the unwinding of the tension band boia Horablarjsen the blind. When pulling up the blind, Jas is tensioned by twisting the bobbin in the unsscenjesetater direction, e.g. in Pig. 3 clockwise, on ^ ev / ickoli ;. The Speyereinrichtuns is ineffective here. -

Claims (1)

Patent claims! J winding roller door blinds "hung up the slats by means of shock conductors and by one or more engaging the lowermost slat traction elements movable Bind, wherein dae tension member up on a spool or unwound let, characterized in that one (2) M by dao tension element bew- Gable pawl (9, 21) is provided, which can be applied to a box projection O ?, 23) of the coil body CIf 18) when the blind is moved downwards by releasing the tensile stress in the tension element (2). 2. winding roll according to claim 1, characterized in that that the pawl (9) in a surrounding the winding roll Housing (7) is pivotably mounted and a cranked one Has arm (10) which rests on the tension element (2) 3 · winding roll according to claim 1 or 2, characterized in that the pawl (9) is resilient · M 4 * winding roll according to claim 1 or 2, characterized in that the vorsai-sweiae in the housing C20) displaceable The pawl (21) can be placed against the tension element (19) under the action of a spring (26) 5, winding roll according to one of claims 1 to 4, characterized characterized in that the locking projection (13) is provided on a bast • oheibe (14) which is connected to the bobbin (1) · - ΠΠ9Β27 / 0518 6. winding roll according to one of the address 1 to 5 »thereby characterized in that locking disks (14) are provided on both sides of the bobbin (1), and that the pawl (9) has two legs (9a, 9b) arranged at a distance from one another, each of which is attached to one of the bast discs (14) can be applied 0 0982 "7/0 5 1 ö L e r s e i t e