EP1591616A1 - Dispositif de protection solaire - Google Patents

Dispositif de protection solaire Download PDF

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Publication number
EP1591616A1
EP1591616A1 EP04101744A EP04101744A EP1591616A1 EP 1591616 A1 EP1591616 A1 EP 1591616A1 EP 04101744 A EP04101744 A EP 04101744A EP 04101744 A EP04101744 A EP 04101744A EP 1591616 A1 EP1591616 A1 EP 1591616A1
Authority
EP
European Patent Office
Prior art keywords
winding tube
sunscreen
friction element
friction
stationary axis
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.)
Withdrawn
Application number
EP04101744A
Other languages
German (de)
English (en)
Inventor
Bjorn Verheijden
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.)
Inalfa Roof Systems Group BV
Original Assignee
Inalfa Roof Systems Group BV
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 Inalfa Roof Systems Group BV filed Critical Inalfa Roof Systems Group BV
Priority to EP04101744A priority Critical patent/EP1591616A1/fr
Publication of EP1591616A1 publication Critical patent/EP1591616A1/fr
Withdrawn legal-status Critical Current

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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
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • 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
    • 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
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B2009/807—Brakes preventing fast screen movement

Definitions

  • the invention relates to a sunscreen assembly, comprising a winding tube which is rotatably mounted on a stationary axis and which is springloaded in a first rotational sense and further comprising a sunscreen which can be wound onto said winding tube when the winding tube rotates in the said first rotational sense and which can be wound off said winding tube when the winding tube is rotated in a second rotational sense against the spring-load.
  • the sunscreen When, in a known sunscreen assembly of the type referred to above, the sunscreen has to be moved to an operative position, in which it is wound off said winding tube in a predetermined amount, the sunscreen generally is engaged manually and pulled away from the winding tube in such a manner that it is wound off said winding tube, which winding tube then will rotate in the second rotational sense against the spring-load.
  • a locking mechanism When a desired position of the sunscreen has been reached, generally a locking mechanism is activated for maintaining the sunscreen in its position. For again winding the sunscreen onto the winding tube, the locking mechanism is disactivated and the spring-load acting on the winding tube will cause the winding tube to rotate in the first rotational sense for winding the sunscreen thereonto.
  • the sunscreen comprises at its free end a pulling beam which, at its opposite ends, is provided with slide shoes frictionally engaging corresponding guides extending alongside the sunscreen.
  • friction mechanisms can prevent an uncontrolled movement of the sunscreen when released from its operative position, such friction mechanisms also will make the movement of the sunscreen towards its operative position (i.e. unwinding the sunscreen from the winding tube) more difficult, because apart from the spring-load also the friction has to be overcome. Further, such friction mechanisms cause additional wear and tear which will reduce the life expectancy of the sunscreen assembly and its reliable operation.
  • a sunscreen assembly of the type referred to above is characterised by a friction mechanism positioned between the stationary axis and the winding tube, which friction mechanism only generates a friction force on the winding tube when the latter rotates in the first rotational sense.
  • the friction mechanism comprises a first friction element attached non-rotatably to the stationary axis, a second friction element engaging the first friction element and a clutch mechanism positioned between the second friction element and the winding tube.
  • the clutch mechanism When the sunscreen is unwound from the winding tube, the clutch mechanism is inoperative, such that the second friction element can move relative to the winding tube and thus can be stationary relative to the first friction element, causing no friction therebetween.
  • the clutch mechanism becomes operative and temporarily interconnects the second friction element and the winding tube. As a result, the second friction element will move relative to the first friction element causing friction therebetween for realising a controlled movement of the sunscreen.
  • the first friction element is a cylindrical silicon body concentric with the stationary axis
  • the second friction element is a cylindrical tube member surrounding the silicon body and comprising an inner surface engaging an outer surface of the silicon body.
  • the cylindrical tube member When the clutch mechanism mentioned above is operative, the cylindrical tube member will move relative to the cylindrical silicon body, such that the inner surface of the cylindrical tube member will slide along the outer surface of the silicon body, generating the desired friction.
  • the clutch mechanism comprises a helical spring concentric with the stationary axis, with a first end rigidly connected to a first one of said second friction element and winding tube and a second end engaging the other of said second friction element and winding tube in a ratchet-like manner.
  • Such a clutch mechanism comprises a minimal amount of parts, and thus is cheap, light-weighted and very reliable.
  • the provision of a helical spring offers the possibility of moving the assembly of first friction element and second friction element in parallel to the stationary axis, for example for reasons of mounting or dismounting the sunscreen assembly in fixed bearings.
  • the helical spring with a first end is rigidly connected to the second friction element, whereas its second end engages the winding tube. If so, one possible manner to realise the engagement between the second end of the helical spring and the winding tube is that the winding tube comprises an inner wall member which is engaged by the helical spring, which wall member extends perpendicularly to the stationary axis.
  • stationary axis not necessarily means that a physical body defining a stationary axis is provided. It is also possible, that said stationary axis defines an imaginary geometrical axis.
  • the only figure shows in a schematical longitudinal section an embodiment of a sunscreen assembly according to the present invention.
  • a winding tube 1 is illustrated which is rotatably mounted on (or around) a stationary axis 2.
  • a stationary axis 2 Such a mounting may be realised using stationary shafts 3,4 and bearings 5.
  • the shafts 3, 4 cooperate with stationary external parts (not illustrated) and have a fixed position, and cannot rotate around the stationary axis 2.
  • at least one shaft (3) may be movable in the longitudinal direction of the stationary axis 2.
  • a torsion spring 6 is positioned within the winding tube 1, of which torsion spring 6 a first end is connected to the stationary shaft 4, and the second end is connected to the winding tube 1. As is known in the state of the art, this torsion spring 6 preloads the winding tube 1 in a first rotational sense for winding a sunscreen 7 thereonto.
  • the shaft 3 has rigidly attached thereto a cylindrical silicon body 8 concentric with the stationary axis 2.
  • a cylindrical tube member 9 concentrically surrounds the silicon body 8, whereas an inner surface of the tube member 9 engages an outer surface of the silicon body 8.
  • a helical spring 10 has a first end 11 rigidly connected to the tube member 9, and a second end 12 engaging a wall member 13 extending perpendicularly to the stationary axis 2 and attached to the winding tube 1.
  • the engagement between the second end 12 of the helical spring 10 and wall member 13 of the winding tube 1 occurs in a ratchet-like manner, which will be discussed in more detail later.
  • the torsion spring 6 tries to rotate the winding tube 1 in a first rotational sense for winding the sunscreen 7 thereonto.
  • the sunscreen 7 When the sunscreen 7 has to be unwound, it is pulled in such a direction that the winding tube 1 will rotate in a second opposite rotational sense against the spring-load of the torsion spring 6.
  • the shafts 3, 4 will not rotate.
  • the second end 12 of the helical spring 10 has such an orientation, that when the winding tube 1 rotates in its second rotational sense, said second end 12 will freely slide along the wall member 13, and therefor will not obstruct the rotation of the winding tube 1.
  • the shaft 3 is movable axially relative to the stationary axis 2 towards the wall member 13. Such a movement will occur against the spring-load of the helical spring 10, and can be used for mounting the assembly or dismounting it. After release of the shaft 3 it will move outwardly (away from the wall member 13) under influence of the helical spring 10.
EP04101744A 2004-04-26 2004-04-26 Dispositif de protection solaire Withdrawn EP1591616A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04101744A EP1591616A1 (fr) 2004-04-26 2004-04-26 Dispositif de protection solaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04101744A EP1591616A1 (fr) 2004-04-26 2004-04-26 Dispositif de protection solaire

Publications (1)

Publication Number Publication Date
EP1591616A1 true EP1591616A1 (fr) 2005-11-02

Family

ID=34929017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04101744A Withdrawn EP1591616A1 (fr) 2004-04-26 2004-04-26 Dispositif de protection solaire

Country Status (1)

Country Link
EP (1) EP1591616A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513805A (en) * 1982-04-30 1985-04-30 Toso Kabushiki Kaisha Decelerator for use in roller blinds
EP1405982A2 (fr) * 1997-12-12 2004-04-07 Hunter Douglas Industries B.V. Un dispositif d'enroulement pour une ouverture d'un bâtiment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513805A (en) * 1982-04-30 1985-04-30 Toso Kabushiki Kaisha Decelerator for use in roller blinds
EP1405982A2 (fr) * 1997-12-12 2004-04-07 Hunter Douglas Industries B.V. Un dispositif d'enroulement pour une ouverture d'un bâtiment

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