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EP0918118B1 - Screen structure - Google Patents

Screen structure Download PDF

Info

Publication number
EP0918118B1
EP0918118B1 EP98203922A EP98203922A EP0918118B1 EP 0918118 B1 EP0918118 B1 EP 0918118B1 EP 98203922 A EP98203922 A EP 98203922A EP 98203922 A EP98203922 A EP 98203922A EP 0918118 B1 EP0918118 B1 EP 0918118B1
Authority
EP
European Patent Office
Prior art keywords
screen
belt
screen structure
parts
spring
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.)
Expired - Lifetime
Application number
EP98203922A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0918118A1 (en
Inventor
Theodorus Bernardus Wolters
Ludwig Geert Maria Kestelyn
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0918118A1 publication Critical patent/EP0918118A1/en
Application granted granted Critical
Publication of EP0918118B1 publication Critical patent/EP0918118B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0607—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with guiding-sections for supporting the movable end of the blind
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0644—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind
    • E04F10/0648—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind acting on the roller tube
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0644—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind
    • E04F10/0655—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind acting on the movable end, e.g. front bar
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0685—Covers or housings for the rolled-up blind

Definitions

  • the present invention relates to a screen structure according to the preamble of Claim 1.
  • the hinge part comprises a single part which, in the region of the ends, is provided with hinge openings for accommodating hinge pins which, on the other side, pivot in the straight parts of the screen structure.
  • European Application 0,609,487 shows an articulated hinge which is situated between two straight parts and comprises a large number of separate parts. A limited angular displacement is possible between each of these parts. At least six hinge parts of this nature are required in order to achieve an angle of 90°, making the corner joint expensive and increasing the radius of curvature.
  • the above-described problem of assembly difficulties is increased still further by the large number of hinge parts.
  • the number of hinge parts is varied as a function of the angle which is to be bridged so that the hinge parts, in the deployed position, are always positioned so as to bear tightly against one another (on the underside). This means that it is necessary to decide at the production site about how many so-called arc elements are required in order to bridge a specific angle, making the structure even more complicated.
  • the object of the present invention is to avoid the abovementioned drawbacks and to provide an improved screen structure.
  • protective caps are present, so that the parts arranged inside the hinge part is always completely covered in any position between, for example, 0 and 90° of the hinge part.
  • the interior of the hinge part generally includes two receiving parts for the belt which connects the drum onto which the screen is wound and the end member. Moreover, it is necessary to provide a guide for the said end member inside the hinge part.
  • the mechanical connection between the two side shell parts may be realized either directly or via the central shell part.
  • these side shell parts may, for example, each be provided with a set of teeth, the sets of teeth engaging in one another. It is also possible to use a lever system or other rod systems to connect the two side shell parts. After the insight of connecting the two side shell parts has been gained, the design of such connection is obvious to the person skilled in the art.
  • the prior art proposes support bars. According to a particularly expedient design of the invention, it is possible to attach a support bar of this nature to the central shell part of the hinge part according to the invention. It has been found that this causes the path of the cloth to essentially correspond to the path of the adjacent guide rails for the front strip or end member.
  • the object of the present invention is to avoid this drawback.
  • This object is achieved in the case of a screen structure as described above in that the compensating spring structure is designed in such a manner that when a first movement of that end of the spring structure which is connected to the belt is realized, at tensioning of the said belt the counterforce delivered by the said spring structure is comparatively low, and at a specific point (point of discontinuity) of the said extension of the said belt, the said counterforce immediately increases to a comparatively high level.
  • all the variables are selected in such a manner that this point of discontinuity is also the optimum setting point for the screen in question.
  • a chain, cable or the like for connecting the roll of cloth to the end member.
  • the compensating spring structure described here can also be used in a screen without the hinge part described above.
  • the structure described above makes it particularly simple for a fitter to tension the belt correctly on site, since there is a clear transition between the comparatively low spring force and the rapidly rising, higher spring force.
  • the point of discontinuity is particularly easy for a fitter to determine, and the manufacturer merely prescribes the position where the end member is situated at the moment of tensioning.
  • a spring compensating structure of this kind is easy to realize with two springs, a comparatively light spring and a comparatively heavy spring. During the first part of the operation of unrolling the cloth, only the first, lighter spring is active, and during the second part the heavier spring comes into action. If desired, the spring characteristic may be made progressive. This choice is made by the producer by selecting the reel diameter, the cloth thickness, the belt thickness and the diameter of the roll of cloth. In all cases, the operations carried out by the fitter on site remain the same.
  • Fig. 1 shows a screen structure comprising a screen (cloth) 1. This can be wound onto and unwound from a roll of cloth 2 arranged on a drum 5 which can be operated with the aid of a motor 34, which is only indicated diagrammatically.
  • Screen 1 is tensioned between roll of cloth 2 and front strip or end member 8.
  • this front strip 8 is mounted in guide rails and comprises a closed, preferably extruded section.
  • the guide comprises two straight guide rails 25 and 26 and a hinge joint 27 arranged between them.
  • Front strip 8 can be moved through the guides arranged therein from a position where it lies substantially against roll of cloth 2 to as far as the free end of the straight guide part 26.
  • a belt 4 which extends from drum 5, via reversing wheel 15, to front strip 8 and can be wound up onto and unwound from reel 35.
  • the front strip 8 contains a compensating spring structure, details of which will emerge from Fig. 3.
  • a hinge part 27 is arranged between the two straight parts 25 and 26.
  • This hinge part 27, details of which can be seen from Fig. 2. comprises two side shell parts 28 and 30 between which a central shell part 29 is arranged. It can also be seen from Fig. 2 that the side shell parts 28 and 30 are provided with projecting rims 16 which are curved in shape and, by interacting with the projecting part 22 of the central shell part, close off the space which is enclosed by the shell parts in any position.
  • the space which is enclosed in the top part of Fig. 2 is to accommodate, on the one hand, the movement of the end of the front strip 8 and, on the other hand, the belt with which this strip is attached.
  • the end of the front strip 8 may, for example, be designed as a carriage provided with wheels (cf. Fig. 3).
  • the compartment lying at a lower level, which is denoted by 14, is used for the return guidance of belt 4.
  • shell part 29 is provided with a receiving part 18 for accommodating an assembly bearing 40 for support bar 19, over which the screen is bent.
  • the bottom compartment 14 is provided with a closure cover 32 which conceals the assembly bearing 40.
  • Each of the side shell parts is provided with a projecting part 31 which can be accommodated in a correspondingly shaped chamber in the straight parts 25, 26.
  • the hinge part 27 is supplied as a ready-to-use structure.
  • the user merely has to connect the straight parts 26 and 25 to one another by fitting the projecting parts 31 into the appropriate chambers in the straight parts 25 and 26.
  • the side shell parts 28 and 30 are provided on the underside with projecting edges 21. These edges interact with the projecting edge 36 of the central shell part and ensure that the underside is completely covered in every position, i.e. the contents of the shell parts are not visible and are protected from the effects of weather.
  • the side shell parts 28 and 30 are coupled with the aid of toothing 17. Via "low-position" hinges 20, the side shell parts 28 and 30 pivot about the central shell part 29.
  • Projections 37 are present in order to provide optimum guidance for the returning part of belt 4.
  • Corresponding projections 38, 39 are present in order to guide the incoming part of belt 4.
  • hinge part makes it simple to set any desired angular position. Any angle between 90 and 180° can be realized in a simple manner. By positioning a number of hinge parts in succession as described above, it is possible to realize any desired curvature for, for example, domes, halls and the like.
  • a spring compensation device is situated in the section, which is preferably closed in order to prevent sagging, of the front strip 8.
  • the spring compensation device may also be located in side guides or a holding case.
  • Belt 4 the end of which is attached, at 40, to the front strip, is situated in front strip 8. Via a spring wheel 11, belt 4 runs towards the guide system for the screen.
  • Spring wheel 11 is held in a prestressed state by springs 9 and 10 which are supported, at the other end, on front strip 8.
  • Spring wheel 11 is guided in the section of front strip 8 and, by way of two flanges, engages around a thickened part of the section, so that the belt 4 is enclosed and cannot come off the wheel. It will be understood that the spring tension in the system is determined by fixing the length of the belt, i.e. the position of the belt which is attached at 40.
  • spring 9 with the characteristic shown in Fig. 4, i.e. during the first part of the compression this compression may be executed with a force which increases comparatively little. Then, the point of discontinuity is reached, after which the spring force increases very quickly, then returns to a gradual further rise.
  • a combination of this nature can be achieved, for example, by using two springs 9, 10, namely a comparatively slack spring and a following comparatively strong spring.
  • Other combinations, either special or tensioned springs may also be conceived of by the person skilled in the art.
  • Using a spring structure of this nature makes it possible for the fitter to tension the spring to the point of discontinuity at a location defined by the manufacturer. This point of discontinuity is easy to feel.
  • the spring characteristic shown here may differ considerably from that which is shown in Fig. 4.
  • the only essential feature is that up to a certain load the spring force is at a comparatively low level and then the spring force increases considerably more rapidly at a defined point or within a specific, comparatively narrow range, at which point or within which range the fitter is able to tension the screen.
  • the pneumatic spring 10 is used to obtain the desired effect. This is because the coil spring is comparatively slack and will execute the first part of the movement, while the series-connected pneumatic spring becomes effective from the point of discontinuity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Automotive Seat Belt Assembly (AREA)
EP98203922A 1997-11-19 1998-11-19 Screen structure Expired - Lifetime EP0918118B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1007572A NL1007572C2 (nl) 1997-11-19 1997-11-19 Schermconstructie voor onder spanning gehouden bewegend scherm.
NL1007572 1997-11-19

Publications (2)

Publication Number Publication Date
EP0918118A1 EP0918118A1 (en) 1999-05-26
EP0918118B1 true EP0918118B1 (en) 2004-02-18

Family

ID=19766031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98203922A Expired - Lifetime EP0918118B1 (en) 1997-11-19 1998-11-19 Screen structure

Country Status (5)

Country Link
EP (1) EP0918118B1 (es)
AT (1) ATE259924T1 (es)
DE (1) DE69821723T2 (es)
ES (1) ES2212217T3 (es)
NL (1) NL1007572C2 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1013592C2 (nl) 1999-11-17 2001-05-18 Aluminium Donk B V Geleidingsconstructie en schermconstructie met in hoek instelbaar geleidingstussenstuk.
ATE367493T1 (de) 2001-11-22 2007-08-15 Harol Internat N V Schirmgerüst mit einem winkelstück
BE1018258A5 (nl) 2008-10-31 2010-08-03 Kestelyn Nv Scherminrichting.
BE1020172A5 (nl) * 2009-12-09 2013-06-04 Kestelyn Nv Scherminrichting.
IT1397096B1 (it) * 2009-12-24 2012-12-28 Iata Srl Struttura di sostegno per tenda
BE1019356A5 (nl) 2010-06-01 2012-06-05 Renson Paul Scherminrichting.
CN101974943B (zh) * 2010-08-13 2012-09-26 上海腾晟遮阳技术有限公司 一种户内外天蓬帘
GB2535506B (en) * 2015-02-19 2018-06-20 Guthrie Douglas Group Ltd Retractable blind system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591652A1 (fr) * 1984-04-16 1987-06-19 Pons Pierre Dispositif de tension permettant l'enroulement et le deroulement d'un store du type velum
CH682247A5 (es) * 1991-06-21 1993-08-13 Sonne Regen Ag
DE4301325C2 (de) * 1993-01-20 1995-02-09 Clauss Markisen Markise mit Gegenzugeinrichtung
DE9301142U1 (de) * 1993-01-28 1993-03-18 Losberger Sonnenschutz GmbH + Co, 74078 Heilbronn Variable Bogenumlenkung für Markisen und Beschattungsanlagen
DE19503439C1 (de) * 1995-02-03 1996-04-11 Clauss Markisen Gegenzugmarkise

Also Published As

Publication number Publication date
NL1007572C2 (nl) 1999-05-20
DE69821723T2 (de) 2004-12-02
ES2212217T3 (es) 2004-07-16
ATE259924T1 (de) 2004-03-15
DE69821723D1 (de) 2004-03-25
EP0918118A1 (en) 1999-05-26

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