Rail for guided screen system
a technology of guided screen and rail, which is applied in the direction of door/window protective devices, building components, construction, etc., can solve the problems of difficult economic achievement of precision, and achieve the effect of increasing costs and difficult economic achievemen
Inactive Publication Date: 2016-01-28
IDEAS BY DESIGN
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- Application Information
AI Technical Summary
Benefits of technology
The present invention is a method for making screen systems by using a guide rail and a roller blind. The guide rail is manufactured with a two-step process that allows for precise control of the neck region of the channel without increasing costs. The guide rail can be used with coarse or fine half zippers, and it is mounted in a support frame to maintain tension in the blind fabric during deployment. This invention helps create screen systems that are cost-effective and easy to install.
Problems solved by technology
Such precision may be difficult to achieve economically when manufacturing a guide rail in a conventional manner, for example by extrusion alone.
Method used
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Embodiment Construction
[0023]FIG. 1 shows an elongate body or rail 10 for use in the manufacture of a guide rail for a zip-like guided screen (not shown). The elongate body 10 includes a pair of spaced-apart walls 12,14 upstanding from a base portion 16. The pair of spaced-apart walls 12,14 (which are inclined away from each other, with the angular separation being about 20°) define therebetween an open channel 18. Each wall 12,14 has a flange 20 projecting laterally into the channel 18 to define a neck region 22 which has an initial minimum width W1 of about 2.0 mm. The base portion 16 includes a groove 24 extending in a notional plane midway between the pair of spaced-apart side walls 12,14. The groove 24 provides a line of weakness in the base portion 16, defining a hinge region 26 adjacent the groove 24 in the base portion 16. Such an elongate body 10 is readily formed in aluminium using a conventional extrusion process.
[0024]FIGS. 3A, 3B, 4A and 4B show the elongate body 10 after it has been plastica...
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Abstract
A method of manufacturing a guide rail for a zip-like guided screen, comprises: providing an elongate body (10) including a pair of spaced-apart walls (12,14) defining a channel (18) therebetween, each wall (12,14) having a flange (20) projecting laterally into the channel (18) to define a neck region (22) of the channel (18); and plastically deforming the elongate body (10) to reduce the neck region (22) of the channel (18) from a first width to a second width such that the channel defines a keyway for receiving a zip-like retention device, the keyway having a profile which is maintained on completion of the plastic deformation and is configured to allow the zip-like retention device to slide in a first direction along the channel, and to resist movement in a second direction perpendicular to the first direction which would separate the zip-like retention device from the elongate body.
Description
TECHNICAL FIELD[0001]The present invention relates generally to guided screen systems of the kind employing a screen with a zip-like retention device on each lateral side thereof, and particularly but not exclusively to a method of manufacturing a rail for guiding one lateral side of a screen with a zip-like retention device.BACKGROUND ART[0002]Each guided screen system comprises a roller blind and a pair of guide rails disposed on either side of an aperture to be screened. The roller blind comprises a roller with a blind fabric wound therearound. The blind fabric has flexible strips on its lateral sides which are trapped within, but free to slide along, a specially shaped groove or keyway in each of the rails. With such a configuration, the blind fabric is held laterally between the rails as it is deployed from the roller. U.S. Pat. No. 4,638,844 and GB 2235005 disclose early forms of such a screen system, with different brackets for loosely mounting the guide rail; and WO2009 / 0984...
Claims
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IPC IPC(8): B21D7/00
CPCB21D7/00E06B9/581E06B9/42
Inventor DIBBEN, MARTIN, ROSS, MOULSON
Owner IDEAS BY DESIGN