CN1124512A

CN1124512A - window shades

Info

Publication number: CN1124512A
Application number: CN94192204.9A
Authority: CN
Inventors: H·G·安德逊
Original assignee: VKR Holding AS
Current assignee: VKR Holding AS
Priority date: 1993-05-21
Filing date: 1994-05-13
Publication date: 1996-06-12
Anticipated expiration: 2014-05-13
Also published as: EP0699268A1; PL173613B1; DK59393D0; CZ216095A3; RU2121051C1; EP0699268B1; DE69401660T2; CN1048310C; ATE148529T1; WO1994028279A1; DE69401660D1; DK170429B1; CZ285579B6; JPH08511311A; GR3022963T3; ES2098950T3; DK59393A; PL311688A1; JP3545761B2

Abstract

A window screening device, e.g. a folding blind or a venetian blind, comprises a screening element (7) fastened between a top casing (8) and a slidable bottom beam (9) as well as parallel guidance means in the form of a cord arrangement with guidance cords (11, 12), which are routed through rows of openings (13, 18-20) in the screening element (7), the bottom beam (9), and a side guide strip (14) to one end of a sash bottom member (2) and from there back to the top casing (8). In the top casing each guidance cord (11, 12) is connected with one end of a tension spring (21, 22), the other end of which is fastened to a stationary point. Free ends of the two cords (11, 12) in each side of the top casing (8) are joined in a slidable (flowing) junction (25, 26), and in connection with each tension spring (21, 22) there is a stopping device (23, 24) in the top casing for limiting the travelling of the spring.

Description

Window screening device

The present invention relates to the masking device that the permanent or interim oblique window in a kind of window screening device, particularly skylight or similar skylight is used.This device has a curtain-shaped cover member that particularly is made of pleating material, and it is connected one and is contained in overhead guard on the window frame top and one securely slidably between the bottom girder; Also have one and comprise the conductor rope guiding device, each conductor rope begins by the row at least two round eyes on the curtain-shaped cover member from overhead guard, and then come an end of frame bottom by the side sliver that bottom girder and curtain-shaped cover member are used, and turning back to overhead guard therefrom, each conductor rope all is connected this spring with an end of a tension spring in overhead guard the other end then is connected on the fixed point in the overhead guard.

This window screening device is disclosed for No. 015043 by European patent EP.The purpose of conductor rope system is to make keeping parallelism between overhead guard and the bottom girder when part rests on each diverse location that window opens when covering, thereby is operating and can guarantee parallel guiding when covering part with being located at handle in the middle of the bottom girder.

When attempting to use an end of a close side sliver that pulls moving bottom girder, bottom girder will tiltedly be drawn, control owing to the conductor rope of in the spring action of the bottom girder other end, and because conductor rope changes the frictional force that produces on the position of direction at each, bottom girder is unable to stir any more, and the corresponding end of Here it is usually said bottom girder is locked.

In order to prevent this locking that oblique load causes that on bottom girder, applies, can consider to adopt those enough tight springs, even this spring is pulled and applies under the situation of oblique load at an end of bottom girder, still can make the pulling force of other end control conductor rope be close to temporarily constant.But do like this, will give conductor rope and the conductor rope path that is made of plastic bushing usually brings undue wear and tears, perhaps since the too high light property of operation that makes of frictional force that conductor rope causes in sleeve pipe and other local change direction places reduce greatly.

According to the present invention, the all available simple mode of above-mentioned these shortcomings is avoided, way is, make two rans turn back to overhead guard by same row or different rows' eyelet respectively in the curtain-shaped cover member both sides, all each links and becomes the joint that slidably (flows) for two of each ran free ends in this overhead guard, and in the above-mentioned free end one is connected with an end of tension spring; Each ran all is through the eyelet in a row separately of the curtain-shaped cover member one side side sliver by bottom girder and window opposite side, arrive the termination of position in the above-mentioned frame bottom of this side, and then return therefrom, the eyelet that comes curtain-shaped cover member one side by the same side sliver, bottom girder and is come a joint that slidably (flows) at the spring offside in the overhead guard; Each side in overhead guard all respectively is provided with the stop device of a tension spring so that the stroke of restraining spring.

Since the stroke of tension spring be subjected to above-mentioned stop device restriction and each side of overhead guard have all that the conductor rope end constitutes slidably or the joint that flows, therefore can allow bottom girder to depart from when being subjected to the tilting load of a side that sizable inclination is done in its normal position parallel with overhead guard and can be not locked.

Thereby the present invention can adopt the operating handle that reaches the whole width of bottom girder.

Compare with the design in the above-mentioned EP patent, the present invention also has such advantage, promptly need not involve frame bottom when guide rope device is installed, and later installation work is carried out easily.

Following the present invention will be described with reference to the accompanying drawings, in the accompanying drawings:

Figure 1 shows that the skylight of the window screening device that is provided with the Folding curtain formula, and

Fig. 2 is according to the conductor rope system among the embodiment of window screening device of the present invention.

Figure 1 shows that the traditional type skylight, its window frame has a top 1, bottom 2 and two sidepieces 3 and 4.Window frame top 1 is provided with the pass window fittings to scheme going up unshowned common mode, available be connected one can be on the trap 6 that pivot rotates and also the operating handle 5 that reaches the whole width of window operate, this trap is covered with a gravity vent that is located on the window frame top 1 and ventilation can be provided when window is closed.

In order to cover, window is provided with according to window screening device of the present invention, is depicted as the Folding curtain that curtain parts that are made of pleating material are formed in this example.Curtain parts 7 are installed between the overhead guard 8 and bottom girder 9 that is attached firmly on the window frame top 1, and this bottom girder can move up and down in window so that cover its major part or sub-fraction.

In the embodiment shown, Folding curtain 7 can come hand-operated lifting with the operating handle 10 that is connected on the bottom girder 9, and this operating handle 10 is as operating handle 5, and the whole width along window extends basically.

The above-mentioned descending operation also control of available rope carries out, make bottom girder 9 still stay arbitrary centre position between extreme higher position and the extreme lower position to scheme to go up unshowned known mode, wherein the extreme higher position is the position that curtain 7 lifts fully, at this moment bottom girder 9 arrives the following position of overhead guard 8, and extreme lower position is the position that Folding curtain 7 is decontroled fully, and at this moment bottom girder 9 contacts with frame bottom 2.

Equally, curtain 7 can change mobile operation into by manual operation with the mode that people know.

Overhead guard 8 and bottom girder 9 can keeping parallelisms when guaranteeing to make bottom girder 9 on position arbitrarily, simultaneously also for guarantee bottom girder 9 can access when the lifting maximum parallel conductive to, window screening device of the present invention is provided with the guide rope device of being made up of many conductor ropes, at Fig. 1 four conductor ropes are shown, these conductor ropes are passed in the eyelet in a row that pleating each burst of material is provided with on the curtain parts 7 respectively.

The detailed construction of guide rope device will illustrate below.

Figure 2 shows that window screening device of the present invention is in the situation when lifting the position fully, wherein Folding curtain parts 7 are rolled over fully and are disturbed and bottom girder 9 arrives the position of overhead guard 8.

This example is depicted as the window of a broad, on curtain parts 7, be provided with four round eyes, said four round eyes are arranged in the both sides of curtain parts vertical centre axis symmetrically, and guide rope device has two rans, and they pass through the eyelet each row of the correspondence of curtain parts both sides respectively.

Like this, fully the ran 11 of pull-up begins last round eye 13 by curtain parts 7 from overhead guard, come the i.e. left side of its offside by bottom girder 9 again, be hidden in then in the side sliver 14 that is fixed on frame side 3 (see figure 1)s, come the turning point 15 that is positioned at frame bottom 2 left sides.

So ran 11 returns from this, by the same side sliver 14 and bottom girder 9 and upwards by the eyelet in a row 19 on the curtain 7.

Another from overhead guard 8, comes the turning point 17 that be positioned at frame bottom 2 right sides by innermost round eye 18 in curtain parts 7 left sides and bottom girder 9 with the ran shown in the fine rule 12, returns then by the outmost round eye 20 of bottom girder 9 and curtain parts left side.

In overhead guard 8 interior two

rans

11 and 12, the same with the disclosed principle of above-mentioned EP patent, be connected with an end of 22 with tension spring 21 respectively, the

spring

21 and 22 the other end then are fixed on the point in the overhead guard.

According to the present invention, guide rope device is characterised in that, each

tension spring

21 and 22 in the overhead guard 8 all respectively is provided with a

stop device

23 and 24 so that the stroke of restraining spring, and in overhead guard 8 ran 11 of each side and two free ends of 12 each link and become that can be free to slide or a float joint, this joint can be made general knot or be made of custom-designed joint.

In an illustrated embodiment, two

tension springs

21 and 22 are fixed in the associating split holder 27, and this clamper is fixed on about position intermediate in the overhead guard 8, and is provided with two ends, forms said

stop device

23 and 24 respectively.

Bottom at overhead guard 8, aim at each round eye 13 and 18-20 of curtain parts 7, the pipe box of fastening guiding ran, this pipe box and

stop device

23 and 24 actings in conjunction, limit respectively between the termination of

ran

11 and 12 slidably or floating

junction

25 and 26 possible mobile.

When oblique effect is applied on the operating handle 10, when for example being applied to its ultra-Right side, the termination that in the part that is positioned at overhead guard of the ran 11 of the eyelet in a row of this side tension spring 22 is stretched to always its this side by curtain parts 7 is with till stop device 24 contacts, this is because in ran 11 and the in a row effect of frictional force between the pipe box of

eyelet

13 and 19 guiding ran

Do the time spent when applying make that bottom girder 9 promotes from the centre position that stops oblique, similar effects will take place at the offside of overhead guard.

One of this tension spring it with one of stop device contact before institute's mobile distance itself just can determine that from the position deflection parallel with overhead guard 8 how much crossbeam 9 can be before it is locked.

But thisly be applied to the locking that causes on the operating handle 10 owing to oblique effect, depend on it is to descend or lifter motion only has influence on the ran 11 of a side in overhead guard 8 or a part of 12 at that time, and can make this locking can not cause obstruction at the offside of curtain parts by selected size suitably.

Ran

11 and 12 be slidably being connected between the end of

tension spring

21 and 22 to form like this: make ran extend through the eyelet of each respective end on the tension spring respectively, and make the ran energy freely pass through these eyelets.

Though the present invention in the above just is illustrated as curtain-shaped cover member with Folding curtain, it also can be used on the other forms of window screening device, on the particularly soft louvre.

Except the embodiment of shown and explanation, also has other type.For example for narrow window, curtain-shaped cover member can only be provided with two round eyes rather than four rows.At this moment two conductor ropes can each pass through same row's eyelet in each side of curtain-shaped cover member.

Claims

1. A window covering, in particular a skylight or skylight-like permanent or temporary sloping window, which has a screening part (7), in particular of pleated material, attached to a firmly mounted Between the top cover (8) on the top of the window frame (1) and a slidable bottom beam (9); there is also a guide device containing guide ropes, and the guide ropes (11, 12) respectively run from the top cover (8) Depart through one of at least two rows of eyelets (13, 18-20) on the shielding part (7), and then pass through the bottom beam (9) and a side guide bar (14) for the shielding part (7) to arrive at One end of the window frame bottom (2), and from there back to the top cover (8), each guide cord (11, 12) is connected in the top cover to one end of a tension spring (21, 22), and the spring The other end is fixed on a fixed point in the top cover; it is characterized in that:

The two rope segments (11, 12) on both sides of the shielding part (7) all return to the top cover (8) through the same or different rows of eyelets (13, 18-20), in which each The two free ends of the rope segments (11, 12) are each connected to a slidable (flowing) joint (25, 26), one of the free ends being connected to the above-mentioned end of the tension spring (21, 22). connection; each rope segment (11, 12) is through the respective rows of eyelets (13, 18) on one side of the shielding part (7) through the bottom beam (9) and the side guide bar (14, 16), to the end of the above-mentioned sash bottom (2) on that side, and back from there, through the same side rails (14, 16), bottom sills (9) and a row of shielding parts (7) The eyelets (19, 20) on the said side go to the slidable (flowing) joints (26) in the top cover (8) on the opposite side of the spring; each side in the top cover is provided with a tension spring ( 21, 22) of the stops (23, 24) in order to limit the travel of the spring.

2. Window screening device according to claim 1, characterized in that each tension spring (21, 22) is fastened to a spring holder forming said stop (23, 24).

3. Window screening arrangement according to claim 2, characterized in that the two tension springs (21, 22) are connected to a joint spring holder (27).

4. Window screening device according to any one of the preceding claims, characterized in that the sleeves for guiding the strands in the top cover (8) are aligned at least with one row of eyelets (13) on each side of the screening part -20) to form a stop on each side of the above-mentioned slidable (flow) joints (25, 26) inside the top cover (8).