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Device for rolling up and unrolling a material web onto and from a shaft

A technology of material width and additional shafts, applied in door/window protection devices, shading screens, sunshades, etc., can solve the problems of complex installation, easy failure, expensive manufacturing, etc. simple effect

Active Publication Date: 2014-11-05
SHADESIGN GMBH & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the corresponding devices are expensive to manufacture and complex to install
Furthermore, the device is more prone to failure based on a large number of components

Method used

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  • Device for rolling up and unrolling a material web onto and from a shaft
  • Device for rolling up and unrolling a material web onto and from a shaft
  • Device for rolling up and unrolling a material web onto and from a shaft

Examples

Experimental program
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Effect test

Embodiment Construction

[0046] In the following description, the same reference numerals designate the same components or features, so that the description of the components with respect to one figure also applies to the other figures, so that repeated descriptions are avoided.

[0047] figure 1 A cross-sectional view of a shaft 1 is shown, on the circumference of which a second fixed end of a material web 2 is fixed. The material web 2 is wound onto the shaft 1 and separated from the shaft at a point of tangency where the material web is figure 1 The orientation shown in extends vertically upwards.

[0048] Depend on figure 2 It can be seen that a pull cord 3 is fastened to the circumference of the shaft 1 in that one end of the pull cord 3 is passed through an opening in the circumference of the shaft 1 and tied into a knot 6 in the shaft, thereby forming a draw cord fastening 7 . The drawstring 3 and the material web 2 are arranged such that the drawstring 3 is wound onto the shaft 1 when the ...

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PUM

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Abstract

The present invention discloses a device for rolling up and unrolling a material web (2) on a shaft (1, 15). The device is distinguished by the fact that a first radial spacing (R1) of the material web (2) from a rotational axis of the shaft (1, 15), which first radial spacing (R1) is assigned to any desired unrolled length (L) of the material web (2), differs from a second radial spacing (R2) of a tensioning cable (3, 16) from the rotational axis of the shaft (1, 15), which second radial spacing (R2) is assigned to said unrolled length (L), with the result that the direction and magnitude of a first torque which is exerted on the shaft (1, 15) via the material web (2) differ from those of a second torque which is exerted on the shaft (1, 15) via the tensioning cables (3, 16), in such a way that, on account of the torque difference between the first torque and the second torque, the shaft (1, 15) is driven by a force (F) which is transmitted by means of the tensioning cables (3, 16).

Description

technical field [0001] The invention relates to a device for winding and unwinding a material web onto and from a shaft according to the preamble of claim 1 . A corresponding device can be used as a sunshade, a view shield and / or a demarcation device. Background technique [0002] In the devices known from the prior art for winding and unwinding a material web onto and from a shaft, the material web is usually fixed on a first fixed end to a holding structure such as a window beam or a wall. At a second fixed end opposite to the first fixed end, the material web is fixed on the circumference of the shaft, so that the material web is wound onto the central section of the shaft by rotation about the axis of rotation and symmetry according to the direction of rotation of the shaft and Unwind. For guiding or tensioning the shaft, the shaft has in each of its two axial end regions an edge section, on the respective circumference of which a pull cord is fastened. Depending on t...

Claims

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Application Information

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IPC IPC(8): E06B9/64E06B9/42E06B9/40
CPCE06B2009/405E06B9/42E06B9/64E06B9/56E04F10/0648E04F10/02E06B9/44
Inventor P·朗F·奥林格
Owner SHADESIGN GMBH & CO