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Rollup door with rollable door leaf

a technology of industrial doors and door leaf, which is applied in the direction of door/window protective devices, shutters/movable grilles, constructions, etc., can solve the problems of visible marks on the lamella surface, increased wear and noise, and flexible door leaf with sensitive materials such as pvc, etc., to facilitate the rapid opening/closing of the door, reduce the noise level, and reduce the effect of noise and wear

Inactive Publication Date: 2005-06-02
FREDE FRIEDHELM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009] In order to minimize the noise and wear and facilitate the rapid opening / closing of the door, it is important that the leaf is rolled up on specially designed pair of conical modules and thereby avoids direct contact with the other parts of the door leaf. The object of the present invention is to decrease the noise level and facilitate higher opening and closing speeds and to improve the safe operation of such types of rollup door.

Problems solved by technology

The drawback with this construction for more rigid doors is that wear soon causes visible marks on the lamella surface, which is regarded as a negative factor.
In addition the lamellae are rolled on each other without any padding, which causes noise.
A flexible door leaf with, for example, sensitive material such as PVC, can also suffer from these wear problems.
The lamellae, rolls, and guiding system are in motion during the complete opening / closure operation, which causes increased wear and noise.
Still, this door design has a disadvantage in that the rolled up layers are in direct contact with each other, which causes noise.
This top-on-top rolling leads to the support bodies suffering from both tension and pressure, and both outer surfaces incur wear and tear.
The disadvantages with this winding principle are the need for multiple shafts, and a low winding speed, as the shade or blind has to pass around the several shafts.

Method used

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  • Rollup door with rollable door leaf
  • Rollup door with rollable door leaf
  • Rollup door with rollable door leaf

Examples

Experimental program
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first embodiment

[0022] the rollup door according to the present invention will now be described with reference to FIGS. 1-4. FIG. 1 is a perspective view of a module 10 mounted on a shaft 12 and used in rolling and unrolling the door. Alternatively, the shaft 12 itself could have the shape of a module (not shown). In the present embodiment, the module 10 has an outer shape of a conical spiral with a solid continuous surface 14. Advantageously, module 10 is successively radially enlarged, and includes smaller and larger parts of increasing diameter. The module 10 will be further described in reference to FIG. 2.

[0023]FIG. 2 is an internal view of the door in the closed position (see right portion of FIG. 2), and in the open position (see left portion of FIG. 2). The right portion of FIG. 2 shows a door blade, or door leaf 16, in a closed position covering a door opening. In most door applications the door is operated vertically as shown in FIG. 2, but horizontal or angled operation of the door is al...

second embodiment

[0029] the invention is now described with reference to FIGS. 5-7. FIG. 5 is an internal view of the door in the closed position (see right portion of FIG. 5), and in the open position (see left portion of FIG. 5). According to the present embodiment, door leaf 40 comprises layers 42, 44, 46 of stepwise increasing width from top to bottom. Note that each layer comprises slats of equal width. Also with this embodiment, each of the two modules is a package of thin-walled parallel disks. For simplicity, the disk package comprising disks 50, 52, 54 on the right side of the door will be described. Distance elements 56 are provided, for example, to stiffen up the disc package. The distance element 56 between the smallest and middle disks 50, 52 may also serve as a fixing point 64 for the attachment of the hoisting belt 66. In addition, the distance elements 56 also facilitate guiding the door leaf 40.

[0030] As the door is raised, each respective layer 42, 44, 46 is rolled up on the respec...

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Abstract

A rollup door comprising a door leaf of increasing width from top to bottom and having a narrower part on the top and a wider part on the bottom, and flexibility in the rolling direction; channels for guiding the door; and two modules for rolling and unrolling the door leaf so that a number of leaf layers do not come in contact. The modules are situated on each side of the door, have the same center axes and are successive radially enlarged so that on opening and closing of the door, the narrower and wider parts of the leaf engage the smaller and larger parts respectively of the modules.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a rollup industrial door that can operate at high speed and low noise level. More specifically, the invention relates to a rollup door comprising a door leaf or blade of increasing width from top to bottom and having flexibility in the rolling direction, channels for guiding the door, two modules for rolling and unrolling the door leaf so that a number of leaf layers do not come in contact, wherein the modules are situated on each side of the door, have the same center axes and are successively radially enlarged so that on opening and closing of the door, the narrower and wider parts of the leaf engage the smaller and larger parts respectively of the modules. BACKGROUND OF THE INVENTION [0002] Since the 1970's there has been a great need to use rapidly moving doors in buildings for industrial use. This applies to openings indoors as well as in external walls, where the door provides shielding between different activities...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E06B9/17E06B9/56
CPCE06B9/56E06B9/17E06B9/02
Inventor FREDE, FRIEDHELM
Owner FREDE FRIEDHELM
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