EP1703039A1 - Ausfallstange für Markise - Google Patents

Ausfallstange für Markise Download PDF

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Publication number
EP1703039A1
EP1703039A1 EP05380047A EP05380047A EP1703039A1 EP 1703039 A1 EP1703039 A1 EP 1703039A1 EP 05380047 A EP05380047 A EP 05380047A EP 05380047 A EP05380047 A EP 05380047A EP 1703039 A1 EP1703039 A1 EP 1703039A1
Authority
EP
European Patent Office
Prior art keywords
securing
long
region
lead bar
wide region
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Withdrawn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
EP05380047A
Other languages
English (en)
French (fr)
Inventor
Juan Llagostera Forns
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.)
Llaza SA
Original Assignee
Llaza SA
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 Llaza SA filed Critical Llaza SA
Priority to EP05380047A priority Critical patent/EP1703039A1/de
Priority to US11/375,773 priority patent/US20060213624A1/en
Publication of EP1703039A1 publication Critical patent/EP1703039A1/de
Withdrawn legal-status Critical Current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
    • 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
    • E04F10/0692—Front bars

Definitions

  • This invention concerns a lead bar for retractable awning, of the type that comprises a hollow profile produced through the extrusion of a light metal alloy, such as aluminium.
  • Retractable awnings that consist of a canvas with a rear border joined to a tube, into which it can be rolled up, mounted at its ends so that it can rotate between ends secured to brackets fixed to a wall or other structure, and with a front edge joined to a rigid bar, known as the "lead bar", are well-known.
  • There is a mechanism connected to the roll-up tube that can be manually or motor operated in order to rotate the tube in one or the other directions so that the canvas awning is opened or closed.
  • a pair of elastically-loaded, retractable arms is connected by one end to the said wall or other structure and by the other end to the lead bar so that it supports the lead bar and applies tension to the canvas awning.
  • the term “rear” is used to designate those parts that are closest to the wall or other structure on which the awning roll-up tube is mounted, and the term “front” is used to designate those parts that are furthest away from the wall or the roll-up tube.
  • the terms “upper” and “lower” are used in its conventional sense referred to the lead bar when same is in a substantially horizontal position of the arms.
  • the terms “vertical” and “horizontal” in reference to the lead bar are also based on its position when the arms are in a substantially horizontal position.
  • the lead bar especially when it has significant length, for example, four metres or more, is subjected to significant combined flexion and torsion forces.
  • the directions in which the forces are produced depends on several factors, some variable, such as the arm and awning inclinations, the amount the canvas awning is extended, wind force and direction etc, together with others that are constant, such as arm type and layout, arm elastic load factor, together with the arm's own weight and that of the awning, among others.
  • Document ES-A-1031627 belonging to the applicant, describes a lead bar consisting of a hollow profile made by aluminium extrusion, and which consists of longitudinal grooves designed for the securing of a front edge of the canvas awning and a front skirt, together with further longitudinal grooves for the securing of the front ends of the arms.
  • the mentioned profile presents an angular configuration formed by a long horizontal region and a long vertical region. A large number of the said horizontal grooves enable the profile to be installed with the horizontal region in both the upper and lower positions, maintaining the vertical region in a front position.
  • This profile also allows different options for securing the arms, whether these are rigid oscillating or elbow articulated.
  • the mentioned long horizontal and vertical regions provide a good level of resistance to the flexion forces in the vertical and horizontal planes, but are not so efficient against torsion forces along the longitudinal axis of the bar and against combined flexion and torsion in other variable and unpredictable planes.
  • Patent FR-A-2335686 concerns an awning leading bar made up of two or more extruded hollow profiles joined together by means of sections of cylindrical piping that are plugged into the respective adjacent ends.
  • the profile has a surrounding wall that defines three coaxial cylindrical portions, at least one of which, along the generatrices, links up with a pair of substantially straight sections that form a very open "V" transverse section that provides a certain amount of elasticity that is necessary to permit the said piece of cylindrical connection piping to be plugged in.
  • this same elasticity is an inconvenience with respect to withstanding the torsion forces in the longitudinal axis of the bar, as well as the combined flexion and torsion, since it facilitates the elastic deformation of the profile.
  • Patent ES-A-2029203 describes an awning that consists of a lead bar made from an extruded hollow profile with grooves designed for the securing of a front edge of the canvas awning and a front skirt, together with further longitudinal grooves for the securing of the front ends of the awning arms located at a rear section of the profile.
  • the relative layout of the longitudinal grooves for securing the canvas, skirt and arms allows the profile to be installed in two mutually inverted positions that are respectively suitable for rigid oscillating or elbow articulated arms.
  • the awning securing grooves are in the upper section and as close as possible to the lead bar when the arms are completely folded.
  • This profile includes a wide region and a long region, but the longitudinal grooves for securing the canvas and arms are not located on the said wide portion, in relative opposite positions with respect to its central axis.
  • the purpose of this invention is to reduce the inconveniences of the profiles in the state of the art by providing a lead bar for retractable awning designed to withstand the combined flexion and torsion forces acting in certain planes and main axes and in other multiple variable planes.
  • This invention contributes to obtaining the previous and other objectives by providing a lead bar for retractable awning, of the type that is made up of a hollow profile manufactured through the extrusion of a light metal alloy, and which comprises a longitudinal groove for securing the canvas for fixing the front edge of a canvas awning and a longitudinal arm securing groove for securing the front end of at least one arm.
  • the lead arm of this invention is characterised because the said profile has a transverse section with a surrounding wall that defines a wide region, in which the said surrounding wall consists of upper, lower, front and rear portions located away from a central geometric axis, and a long region, in which the said surrounding wall consists of front and rear sections facing each other and located close to a mid geometric plane between the two.
  • the mentioned long region overhangs downwards from the said lower portion of the wide region next to the front edge of the same.
  • the cited longitudinal groove for securing the canvas and the said longitudinal groove for securing the arm are arranged on the said upper portion and on the lower portion of the substantially wide portion respectively in directly opposite positions in relation to the said central axis.
  • the lower portion of the wide region is connected to the said rear long section forming a concavity with respect to the outside of the bar at a right, or almost right, angle, and the longitudinal arm securing groove is formed in the said concavity.
  • the edge of the wide region resembles a circle, or preferably, an ellipse that has a horizontal axis that is slightly longer than a vertical axis when the said arm is substantially horizontal, which provides the profile with excellent resistance to torsion with respect to the central axis of the wide region and increased resistance to flexion in a horizontal plane that passes through this central axis.
  • the mentioned mid-plane in the long region is substantially vertical when the arms are substantially horizontal, which provides the profile with excellent resistance to flexion in a vertical plane.
  • the profile seen in the transverse section presents a dividing wall that separates the wide region from the long region.
  • the said dividing wall connects an interior part of the said longitudinal arm securing groove and an area of the surrounding wall where there is a front portion of the wide region and the front long section of the long region. This dividing wall reinforces the profile and endows additional rigidity in the wide region against any eventual strain caused by combined torsion and flexion forces.
  • the lead bar in accordance with this invention, therefore achieves excellent resistance to torsion along its longitudinal axis and also to flexion in the horizontal and vertical planes, with a minimum of weight and without giving up any attractive aesthetic appearance.
  • Profile 1 shows a transverse section of a hollow profile 1 produced by the extrusion of a light metal alloy, such as aluminium, from which the lead bar is produced in accordance with an embodiment example of this invention.
  • Profile 1 has a surrounding wall 8 that defines a wide region A, in which the upper, lower, front and rear portions 8a, 8b, 8c, 8d of the said surrounding wall 8 are located away from a central axis E.
  • Surrounding wall 8 of profile 1 also defines a long region B, in which the said surrounding wall 8 includes front and rear long sections 8e, 8f, that face each other and are close to a mid-plane P that is located between the two.
  • the mentioned long region B of the transverse section of profile 1 projects out from under the wide region A, next to a front side of profile 1.
  • the mentioned lower portion 8b of the surrounding wall 8, which forms part of the wide region A, is connected to the said long rear section 8f of long region B forming a concavity with respect to the exterior in a right, or almost right, angle.
  • the lower portion 8b of the wide region A in the said concavity consists of a longitudinal arm securing groove 6 intended to secure the front ends of arms 7 (Fig. 2) by means of conventional known securing elements.
  • the lower portion 8b connects to the said rear portion 8d of the surrounding wall 8 that forms part of the wide region A, and both are jointly shaped to mate with a support surface 9 on an articulated connection piece 10, which is installed on the end of arm 7, just as shown in Fig. 2.
  • Long region B partially hides the connection of arm 7 with profile 1, thus contributing to improve the aesthetic appearance of the assembly.
  • the profile that makes up the lead bar includes a longitudinal groove for fixing canvas 2 in place, which is intended to secure the front edge of canvas awning 3 (Fig. 2) by conventional means that would be well-known to an expert in the sector technique.
  • the mentioned longitudinal groove for fixing canvas 2 has a longitudinal opening facing forward and downward for facilitating the expulsion of water, for example, rainwater, that might have penetrated into the longitudinal groove for fixing canvas 2.
  • the mentioned front portion 8c of surrounding wall 8 that forms part of the wide region A connects, without a continuation solution, to the said long front section 8e of long region B, forming a continuous curved section from the longitudinal groove for fixing canvas 2 to the longitudinal groove for fixing canvas for securing skirt 4.
  • the profile 1 seen in transverse section also includes a dividing wall 11 that separates the wide region A from the long region B. More specifically, the mentioned dividing wall 11 connects an interior part of the longitudinal groove for securing arm 6 to an area of the surrounding wall 8 where the mentioned front portion 8c of the wide region A and the long front region 8e of long region B are located.
  • Figure 3 is a diagram that illustrates the forces that intervene in the creation of a torsion force in the profile in plane Y, Z.
  • Arms 7 are elastically loaded to push profile 1 in a direction that takes the lead bar away from the wall or structure on which the awning is installed, and the thrust of arms 7 is balanced by canvas 3 tension that is retained by the roll-up tube.
  • a tension T is applied to the longitudinal groove for securing canvas 2, and this corresponds to the tension in canvas 3, which can be broken down into vertical tension component Tv and a horizontal tension component Th.
  • a force F is applied to the longitudinal groove for securing arm 6, which corresponds to the thrust of arms 7, which can be broken down into vertical force component Fv and a horizontal force component Fh.
  • the horizontal tension and force components Th and Fh constitute a pair of forces that produce torsion moment Mt.
  • the longitudinal grooves for securing the arm and canvas 2, 6 are arranged in the wide region A so that an imaginary line from one or the other would approximately pass through the central axis E or close to it. In a similar fashion, the distances from the longitudinal grooves for securing the arm and canvas 2, 6 to the central axis E are substantially equal. In other words, longitudinal grooves for securing the arm and canvas 2, 6 are substantially in directly opposite positions in relation to the said central axis E.
  • the surrounding wall 8 defines an outline similar to a circle, or an ellipse that has two axes of similar, or not very different, lengths.
  • Figure 4 is a diagram that illustrates the forces that intervene in the creation of a flexion force in the horizontal plane of profile in plane X, Y.
  • the tension T of canvas 3 is applied in an approximately uniform fashion along the entire length of profile 1, although for greater simplicity in Figure 4, the horizontal tension component Th is shown concentrated at a central point of profile 1.
  • the horizontal force components Fh of the two arms 7 are applied at the ends of profile 1. This combination of horizontal tension and force components Th and Fh produce a flexion moment in a horizontal plane Mfh in profile 1.
  • the outline of the wide region A is preferable similar to an ellipse that has a horizontal axis that is slightly longer than the vertical axis.
  • the dividing wall 11 also contributes to the reinforcement of profile 1 against flexion forces in the horizontal plane.
  • Figure 5 illustrates the forces that intervene in the creation of a flexion force in a vertical plane in the profile in plane X, Z.
  • Profile 1 has its own weight Pp that is applied in an approximately uniform fashion along the entire length of profile 1, although for greater simplicity in Figure 5, own weight Pp, which obviously acts in a vertical direction, is shown concentrated at a central point of profile 1.
  • Own weight Pp also includes part of the weight of canvas 3. This own weight is balanced by a support resistance produced by the two arms 7. Therefore, certain vertical support resistance components Rv are applied to the ends of profile 1. This combination of own weight Pp and vertical support resistance components Rv produce a flexion moment in a vertical plane Mfv in profile 1.
  • profile 1 In order to increase the flexion resistance of profile 1 in the vertical plane without negatively affecting the torsion resistance with respect to the central axis E and to the flexion in the horizontal plane, profile 1 includes the long region B described above, which is arranged so that the mentioned mid-plane P is substantially vertical. Moreover, at the end of the long region B furthest away from wide region A, where the ends of the long front and rear sections 8e, 8f meet up, profile 1 includes a longitudinal groove for securing skirt 4 intended to secure skirt 5 (Fig. 2) by conventional means similar to the means of securing canvas 3. The mentioned longitudinal groove for securing skirt 4 has a longitudinal opening facing downwards.
  • the longitudinal groove for securing skirt 4 and the longitudinal groove for securing canvas 2 add mass to profile 1 at locations that are separated as much as possible from each other in the vertical direction and relatively close to mid-plane P in order to contribute to improve the moment of inertia of the profile against flexion in the vertical plane.
  • Figures 6 and 7 show another embodiment example of the lead bar of this invention, which is very similar to the embodiment example described above in relation to Figures 1 and 2, for which reason it will not be described in full.
  • the main difference lies in the fact that long region B is longer, which makes it more appropriate for very wide awnings with a significantly longer lead bar, because it possesses greater resistance to flexion in the vertical plane.
  • the lead bar is completed by plastic end pieces (not shown) that are fitted to the ends of the profile 1 to close off the internal cavities of the hollow profile 1 in order to prevent the accumulation of dust and other dirt and also to improve its appearance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Awnings And Sunshades (AREA)
EP05380047A 2005-03-15 2005-03-15 Ausfallstange für Markise Withdrawn EP1703039A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05380047A EP1703039A1 (de) 2005-03-15 2005-03-15 Ausfallstange für Markise
US11/375,773 US20060213624A1 (en) 2005-03-15 2006-03-15 Lead bar for a retractable awning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05380047A EP1703039A1 (de) 2005-03-15 2005-03-15 Ausfallstange für Markise

Publications (1)

Publication Number Publication Date
EP1703039A1 true EP1703039A1 (de) 2006-09-20

Family

ID=34942768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05380047A Withdrawn EP1703039A1 (de) 2005-03-15 2005-03-15 Ausfallstange für Markise

Country Status (2)

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US (1) US20060213624A1 (de)
EP (1) EP1703039A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2335686A1 (fr) 1975-12-17 1977-07-15 Lauzier Rene Profil de charge tubulaire pour stores a rouleau et similaires
ES2029203A6 (es) 1991-03-06 1992-07-16 Magrane Pujol Juan Perfeccionamientos en la construccion de estructuras en voladizo replegables.
DE9403139U1 (de) * 1994-02-25 1994-06-09 Stobag Ag Merenschwand Markise

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077419A (en) * 1975-06-16 1978-03-07 Phil Lux Awning apparatus for travel trailers, mobile homes, and the like
BE1009421A3 (nl) * 1995-06-02 1997-03-04 Brutsaert Accessories Nv Oprolbare luifel.
WO1997013935A1 (de) * 1995-10-06 1997-04-17 Cedis Licensing Gmbh Markise

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2335686A1 (fr) 1975-12-17 1977-07-15 Lauzier Rene Profil de charge tubulaire pour stores a rouleau et similaires
ES2029203A6 (es) 1991-03-06 1992-07-16 Magrane Pujol Juan Perfeccionamientos en la construccion de estructuras en voladizo replegables.
DE9403139U1 (de) * 1994-02-25 1994-06-09 Stobag Ag Merenschwand Markise

Also Published As

Publication number Publication date
US20060213624A1 (en) 2006-09-28

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