High speed rollup door with rollable door leaf
An industrial rollup door to selectively cover a doorway opening or to provide industrial guarding is presented. The rollup door comprises door leaf, comprised of lamellae, or panels a flexible strip as a lifting belt for selectively lifting and lowering the door, a continuous dampening profile running along the outer surface of each lamellae near an end, and a rotatable spiral disc to accept the lamellae as the door is lifted and to release the lamellae as the door is lowered.
1. An industrial rollup door for closing or opening a doorway fitted with side rails and a cross piece spanning the doorway width proximate to the top of the doorway comprising:
a door leaf comprising a plurality of elongated rigid lamellae, each lamella having a left end portion, a right end portion, a top portion, a bottom portion, an inner surface and an outer surface;
at least one flexible lifting belt on each end portion of the lamellae;
end pieces fitted to the end portions of each lamella to engage the lifting belt at an intermediate portion;
a continuous, flexible dampening profile strip fixed to each end portion of a top lamella and positioned on the outer surface of the end portions of a plurality of lamellae; and
a rotatable shaft fitted with a spiral disc profile including a dampening profile attached to the outer circumference, the spiral disc profile adapted to accept the lamellae in successive layers as the shaft rotates in a first direction, and to release the lamellae as the shaft rotates in a second direction; wherein the flexible dampening profile strip is secured to the bottom of the door leaf by a compensating member extendable between a first position and a second position.
2. An industrial rollup door as claimed in claim 1 in which at least parts of adjacent bottom portions and top portions of the lamellae are configured to pivotally engage each other.
3. An industrial rollup door as claimed in claim 1 in which at least parts of at least one of adjacent bottom portions and top portions are configured to accept a resilient member.
4. An industrial rollup door as claimed in claim 1 in which at least parts of adjacent bottom portions and top portions are configured to accept a resilient hinge member to flexibly join the lamellae.
5. An industrial rollup door as claimed in claim 1 wherein the lamellae are generally a flattened arcuate “C” shape in cross section.
6. An industrial rollup door as claimed in claim 1 wherein the lamellae comprise a plurality of openings through the front surface and the back surface.
7. The industrial rollup door as claimed in claim 6 wherein the openings are covered on at least one side with a transparent material.
8. An industrial rollup door as claimed in claim 1 wherein the lamellae are fabricated from substantially rigid materials including, but not limited to, wood, metal, or plastic.
9. An industrial rollup door as claimed in claim 1 wherein the lamellae are uniform in length.
10. An industrial rollup door as claimed in claim 1 wherein one or more lamellae, or portions thereof, are transparent.
11. An industrial rollup door as claimed in claim 1 wherein one or more of the lamellae include endpieces with wind anchors.
12. An industrial rollup door as claimed in claim 1 in which the compensating member is an elastic member.
13. An industrial rollup door as claimed in claim 1 in which the spiral profile and lamellae are configured to closely engage upon shaft rotation in a first direction.
14. An industrial rollup door as claimed in claim 1 in which the lamellae are configured to closely engage in successive layers upon shaft rotation in a first direction.
15. An industrial rollup door as claimed in claim 12 , wherein the elastic member is a spring.