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
  • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
  • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
  • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
  • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
  • E06B9/32—Operating, guiding, or securing devices therefor
  • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
• • 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
  • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
  • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
  • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
  • E06B9/32—Operating, guiding, or securing devices therefor
  • E06B9/326—Details of cords, e.g. buckles, drawing knobs
• • 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
  • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
  • E06B9/262—Lamellar or like blinds, e.g. venetian blinds with flexibly-interconnected horizontal or vertical strips; Concertina blinds, i.e. upwardly folding flexible screens
  • E06B2009/2625—Pleated screens, e.g. concertina- or accordion-like
• • 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
  • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
  • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
  • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
  • E06B9/32—Operating, guiding, or securing devices therefor
  • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
  • E06B2009/3222—Cordless, i.e. user interface without cords

Definitions

• the invention relates to a keder for a sun protection system for deflecting at least one system cord of the sun protection system according to the preamble of claim 1. Furthermore, the invention relates to a sun protection system with such a keder and a method for manufacturing such a keder.
• Sun protection systems particularly blinds or pleated blinds, are known in various forms from the prior art.
• the sun protection fabric which may comprise several slats or be designed as a fabric with numerous pleats, can be held vertically slidable by system cords.
• an upper end of the sun protection fabric could be attached to a top rail or a lower end to a bottom rail, with the top and bottom rails being able to be moved independently of each other along the system cords to change the size of the sun protection fabric.
• the system cords of the sun protection system can run through deflection elements to which the sun protection systems are mounted under tension. Due to this tension, the top and bottom rails can be moved and remain in the desired position after movement. This allows for individual adjustment.
• the required level of sun protection can be set as needed.
• the system cords can be redirected within the tracks, i.e., the top and/or bottom rails, of the sunshade system. After the system cords are threaded and guided within the tracks, the so-called keder (or keder) can be inserted into the tracks as a cover strip. Typically, one end of the sunshade can be wrapped around the keder and inserted into the profile rail.
• this method increases the installation effort.
• the system cords must be led out of the sunshade system's tracks laterally or through the keder so that they can extend through the sunshade.
• Keders are die-cut from semi-finished plastic products and then fitted with eyelets, usually using bar stock as the starting material. Due to the use of bar stock, this results in an excessively high amount of waste, typically around 30%.
• the object of the present invention is therefore to propose a new keder that is stable and durable and can also be manufactured with minimal effort and resource conservation. Furthermore, the keder should be universally adaptable, particularly to different sun protection systems, and the effort required to mount the keder to the sun protection system should be minimized.
• a keder for a sun protection system for deflecting at least one system cord of the sun protection system
• the keder is made of metal, preferably aluminum. It has a base and at least one round or elliptical recess through which a system cord of the sun protection system can be guided, the recess extending through the base.
• the recess in the base for guiding the system cord is preferably round or elliptical in plan view.
• the base which forms the main body of the keder, is preferably made of a metal strip.
• the recess can have a width and/or diameter that is significantly larger than the diameter of the system cord. For example, the diameter or width can be at least twice the diameter of the system cord.
• the keder Due to the metal construction of the keder, it is extremely robust and durable and can simultaneously provide a high-quality and visually appealing finish to a profile rail, such as a top or bottom rail, of the sun protection system.
• the keder can be easily manufactured from a metal strip and, in particular, cut to length from it, resulting in minimal waste during production. Consequently, the keder according to the invention can be manufactured in an extremely resource-efficient manner, especially with minimal material usage.
• the installation of the sunshade system is simplified, as a system cord can be easily guided through the round or elliptical recess of the keder towards a sunshade panel of the sunshade system and deflected at the recess, eliminating the need for additional openings in the track or deflection devices.
• the term "keder” relates to a reinforcing element to which a sunshade curtain of a sun protection system can be attached and reinforced, wherein the keder simultaneously serves as a cover for an upper rail and/or lower rail of a sun protection system. can serve this purpose. It is essential within the scope of the invention that at least one system cord can be passed through the keder.
• an eyelet encompassing the recess can advantageously be included.
• the eyelet is designed as a pull-through eyelet, whereby the eyelet can, on the one hand, stabilize the keder base in the area of the recess and, on the other hand, allow the system cord to be redirected or guided without damage.
• the eyelet can be made of metal or plastic.
• the eyelet is made of metal, more preferably of aluminum.
• the eyelet can be easily pressed into the keder base and/or embossed by reshaping the keder base in the area of the recess. Pressing in the eyelet offers high flexibility while minimizing stress on the keder base material. Embossing, on the other hand, advantageously eliminates a weak point by selectively deforming the keder base material in the area of the eyelet. The deformation process strengthens the material and eliminates the risk of an eyelet, such as a pressed-in eyelet, coming loose.
• the eyelet is formed integrally with the keder base.
• the eyelet is formed integrally with the keder base in such a way that the eyelet is embossed into the keder base.
• the entire keder is formed in one piece. This one-piece construction significantly increases the stability of the keder, especially in the area of the eyelet, compared to a multi-part design. Furthermore, a one-piece design eliminates an assembly step and reduces the number of parts.
• a free end section of the eyelet can run at an acute angle ⁇ to the central axis of the recess. This advantageously bends away the free end of the eyelet, which encompasses the recess, and the opening of the recess and the central axis of the recess, thus preventing damage to the system cord guided through the recess, for example, due to a sharp edge on the free end section of the eyelet. Furthermore, by designing the eyelet with an end section running at an acute angle ⁇ to the central axis of the recess, the deflection of the system cord can be facilitated.
• the central axis is the axis that passes through the center of the ellipse or circle that defines the size of the round or elliptical recess.
• the central axis preferably runs perpendicular to the longitudinal axis of the keder base.
• the end section of the eyelet runs at an angle of inclination ⁇ between 20° and 70° to the central axis of the recess. More preferably, the end section of the eyelet runs at an angle of inclination ⁇ of 45° to the central axis of the recess.
• the base of the keder can have an arc shape, a C shape, or a V shape in cross-section.
• the arc, C, or V shape gives the base of the keder, and therefore the entire keder, higher bending stiffness.
• the applied forces can be distributed evenly across the entire structure, thus increasing the load-bearing capacity with a reduced material thickness.
• the keder base has a C-shape in cross-section.
• At least one side of the keder base is coated with a sliding coating.
• This sliding coating reduces friction between the keder base and the system cord, allowing the cord to slide as smoothly as possible along the coated side of the keder base and thus reducing wear, particularly abrasion.
• at least one side of the keder base is coated with PTFE (polytetrafluoroethylene). PTFE coatings offer particularly good sliding properties.
• an adhesive element can be arranged for attaching the keder to a sunshade fabric of a sun protection system.
• the adhesive element has an adhesive side facing away from the keder base.
• the adhesive element is designed as a double-sided adhesive tape, so that the adhesive element can be attached quickly and reliably to both the keder base and the sunshade fabric.
• the keder base can be rectangular in plan view. Additionally or alternatively, at least one corner of the keder base can have a rounded or chamfered edge. Preferably, the keder base is rectangular in plan view, and at least one corner, more preferably all corners, of the rectangular keder base have a rounded or chamfered edge. The rounded or chamfered edge of at least one corner of the keder base not only improves the visual appearance but also increases the stability of the keder and reduces the risk of damage to the sun protection system in which the The handling, assembly and/or use of the keder should be reduced.
• the invention in a second aspect, relates to a sun protection system with at least one keder according to the invention, described elsewhere, and with a sunshade that can be adjusted in size and has at least one system cord.
• the sunshade is attached to the keder, and the system cord is guided through the eyelet of the keder.
• the system cord is guided through the eyelet of the keder in such a way that the system cord is deflected by means of the eyelet.
• the sun protection system can have at least one profile rail, preferably a top rail and a bottom rail, with the adjustable sunshade fabric arranged on the profile rail.
• the sunshade fabric is arranged between the top rail and the bottom rail.
• the top rail and the bottom rail can be arranged to be freely displaceable from one another in the vertical direction on the system cords.
• the sunshade fabric and the top rail or bottom rail can be mounted, for example, on at least one system cord, such that the top rail or the bottom rail can be displaced by a force exerted by the user. It is also conceivable that the top rail and/or the bottom rail is fixed in its position when unloaded, i.e., without force being exerted by a user.
• the bottom rail is preferably arranged below the sunshade fabric in the vertical direction
• the top rail is preferably arranged above the sunshade fabric in the vertical direction.
• the sun protection curtain is arranged between the upper rail and the lower rail, whereby the upper rail and the lower rail can be freely or guidedly displaceable transversely to the longitudinal extent of the upper rail and the lower rail, in particular in the vertical direction.
• the sun protection system is designed in the manner of a Venetian blind or a pleated blind.
• a sun protection system designed in the manner of a Venetian blind can have a sunshade fabric with a plurality of parallel sun protection elements arranged as slats.
• a sun protection system designed in the manner of a pleated blind can have a sunshade fabric with a plurality of parallel pleats, wherein, within the scope of the invention, each pleat forms a sun protection element of the sunshade fabric.
• the system cord preferably runs from the bottom rail through the sunshade fabric to the top rail.
• the system cord can be attached to a frame of a window or door opening, which is to be covered or shaded by the sun protection system.
• the first and last sun protection elements of the vertically variable sunshade can each be attached to a keder. If the sunshade system has a top rail and a bottom rail, the sunshade element closest to the top rail is attached to a keder, and the sunshade element closest to the bottom rail is attached to a keder.
• the sunshade element can be, for example, a pleat of a sunshade, if the sunshade system is designed as a pleated blind, or a slat, if the sunshade system is designed as a Venetian blind.
• the cord guidance can be simplified, while simultaneously increasing the stability of the sunshade system and minimizing assembly and manufacturing costs.
• the invention in another aspect, relates to a method for manufacturing a keder for a sun protection system comprising the following steps: Step a. Shaping a metal strip, preferably by means of a roll former through roll forming, to produce the arc-shaped, C-shaped or V-shaped contour of the keder base as viewed in cross-section; Step b. Creating at least one recess, for example by punching holes, the number of recesses being determined depending on the width of the sun protection system; and Step c. Stamping an eyelet, in particular a through eyelet, and/or pressing in an eyelet, in particular a through eyelet.
• a metallic keder can be produced in a simple manner by shaping a metal strip, subsequently creating a recess in the keder base, and embossing and/or pressing in an eyelet.
• the metal strip is shaped by roll forming using a roll former, so that a keder with a keder base having an arc-shaped, C-shaped, or V-shaped contour in cross-section can be produced from the preferably flat metal strip, which can serve as the starting material for the method according to the invention.
• the keder base formed from a metal strip, can be fitted, preferably by punching holes, with at least one recess suitable for the passage of a system cord, which therefore has a greater width and/or diameter than the system cord.
• the number of recesses can be determined depending on the width of the sun protection system. Preferably, the number of recesses and their positioning within the system are specified. Keder base determined depending on the width of the sun protection system.
• At least one eyelet encompassing the recess can be embossed or pressed into the keder base.
• an eyelet designed as a pull-through eyelet is embossed.
• an adhesive element is applied to one side of the keder, which serves to attach the keder to a sunshade fabric of a sun protection system.
• the method according to the invention is particularly suitable for producing the keder described elsewhere in the invention.
• steps b and c of the process are carried out in parallel, meaning that the recess is created in the keder base while the eyelet is being embossed.
• a bead can first be embossed upwards, then the keder base can be pre-punched in the area of the bead, and subsequently an embossing downwards can be performed, whereby the free end section of the eyelet can then be widened so that the free end section of the eyelet runs at an acute angle to the central axis of the recess.
• the method according to the invention can include an additional step a0 prior to step a., which comprises coating a metal strip and/or providing a coated metal strip.
• the metal strip is provided as a coated metal strip, it can be provided as a coil and/or wound onto a coil.
• the metal strip is coated with PTFE (polytetrafluoroethylene) or a PTFE-coated metal strip is provided.
• the method includes a further step d., which involves cutting the keder to a desired length, whereby the length can be determined depending on the width of the sun protection system.
• the length of the keder can be The keder can be individually adapted to the respective sun protection system, particularly its width.
• cutting marks can be applied to the metal strip, at or between which the keder is cut to the desired length.
• step d. namely cutting the keder to the desired length, takes place after step a0., after step a., after step b., or after step c.
• the keder is cut to the desired length according to step d. after embossing or pressing in an eyelet, and thus after step c. This allows the essentially finished keder to be conveniently separated from the remaining metal strip by cutting it to the desired length, resulting in no or only minimal waste.
• the procedure may include an additional step e. in which the corners of the keder are rounded or chamfered.
• FIG. 1 shows a first embodiment of a keder 10 according to the invention with an eyelet 12 embossed in the keder base 13.
• the eyelet 12 encompasses the recess 11 through which a system cord 102 (not shown) of a sun protection system 100 (not shown) can be guided.
• the Fig. 1 The first embodiment of the keder 10 shown differs from the one with Fig. 2 In the second embodiment of the keder 10 shown, the corners 15 are rounded. That is to say, with other In other words, each longitudinal side L1, L2 of the keder base 13 is connected to a front side S1, S2 of the keder base 13 by a rounding 17.
• the further specific design of the keder 10 according to the first embodiment can be seen in a summary of the Figs. 3 to 7 can be extracted. It is from the Fig. 3 shown section view along section line AA from Fig. 1 It is evident that one side of the keder is coated with a sliding coating. From the with Fig. 4 shown detail B from Fig. 3 It is clearly evident that the free end section 16 of the eyelet 12 runs at an acute angle ⁇ to the central axis M. The dashed line extending from the free end section 16 is merely an auxiliary line to illustrate the acute angle ⁇ . The central axis M runs perpendicular to the longitudinal axis of the keder 10.
• a system cord 102 (not shown here) can be guided through the recess 11 encompassed by the eyelet 12. Because the free end section 16 of the eyelet 12 runs at an acute angle ⁇ to the central axis M of the recess 11, the system cord 102 can be guided, as for example in Fig. 6 shown, guided through the recess 11 in such a way that the system cord 102 does not touch the end of the free end section 16, which may possibly be sharp-edged.
• FIG. 5 Figure 1 shows the keder 10 according to the first embodiment with eyelet 12 and keder base 13 in cross-section. It can be seen that the keder base 13 has a C-shape in cross-section.
• the Figures 6 and 7 In summary, the routing of a system cord 102 through and along the keder 10 can be seen.
• the system cord 102 can be, as with Fig. 6 As shown, it can be inserted from above through the recess 11 encompassed by the eyelet 12.
• Fig. 7 As shown from Fig. 7 As can be seen, the system cord 102 is deflected after exiting the eyelet 12 and guided along the keder base 13 to an end cap 106 of the sun protection system 100.
• a sliding coating 14 is applied to one side of the keder base 13.
• the sliding coating 14 is, as with Fig. 7 shown, applied to the side of the keder base 13 along which the system cord 102 is guided.
• an adhesive element can be used to attach the keder 10 to a surface in the Figures 6 and 7
• the sunshade 101 of a sunshade system 100 may be arranged.
• FIG. 8 Figure 1 shows the basic structure of a pleated sun protection system 100 according to the invention, with a pleated sun protection curtain 101.
• a top rail 103 is provided at the upper end of the sun protection curtain 101
• a bottom rail 104 is provided at the lower end of the sun protection curtain 101, with the top rail 103 and the bottom rail 104 being aligned parallel to the pleats of the sun protection curtain 101.
• the top rail 103 and the bottom rail 104 are displaceable transversely to their longitudinal extent during operation of the sun protection system 100.
• the top rail 103 and the bottom rail 104 can be guided and displaced by the side profiles 105.
• the top rail 103 and the bottom rail 104 are freely displaceable.
• the sun protection system 100 has at least one system cord 102.
• the system cords 102 can be held on a tensioning device and run through the lower rail 104, exit through the recess 11 of the keder 10 towards the sun protection curtain 101, continue through the openings arranged in the sun protection curtain 101 towards the upper rail 103, and exit through the recess 11 of the [unclear text] arranged on the upper rail 103.
• Keders 10 are inserted into the upper rail 103 and run inside the upper rail 103 to a further clamping device.
• Fig. 9 The lower rail 104 with the keder 10 is shown in a side section view. In conjunction with Figs. 6 and 7 , which also aligns the keder 10 for arrangement on a in Figs. 6 and 7
• the lower rail 104 shows that it is evident that one in Fig. 9
• the system cord 102 (not shown) can be inserted from above through the eyelet 12 into the lower rail 104 and can be routed further within the lower rail 104, for example to a clamping device.
• the lower rail 104 can be connected laterally to the Figs. 6 and 7
• the end cap shown is 106.

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• Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Blinds (AREA)
• Curtains And Furnishings For Windows Or Doors (AREA)

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ID=96498329

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Citations (5)

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• 2025
  • 2025-07-29 EP EP25192377.7A patent/EP4686801A1/fr active Pending
  • 2025-07-29 EP EP25192404.9A patent/EP4686802A1/fr active Pending

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