HIGH PERFORMANCE DOOR

Abstract

With a high performance door, preferably high speed door, for closing an opening (11), preferably in a wall (12) comprising a flexible curtain (13) to be wound and unwound on a shaft to open and close the opening (11) with a rigid bottom beam (15) attached on the lower end of said curtain (13) the risk from the bottom beam to the environment upon opening is reduced in, that the rigid bottom beam (15) comprising at least one flush side (20) at least almost flushing the curtain (13).

Claims

1. High performance door, preferably high speed door, for closing an opening (11), preferably in a wall (12) comprising a flexible curtain (13) to be wound and unwound on a shaft to open and close the opening (11) with a rigid bottom beam (15) attached on the lower end of said curtain (13) characterized in, that the rigid bottom beam (15) comprising at least one flush side (20) at least almost flushing the curtain (13).

2. High performance door according to claim 1, characterized in, that the rigid bottom beam (15) is detachably connected to said curtain (13)

3. High performance door according to claim 1, characterized in, that said rigid bottom beam (15) comprising an off center opening, preferably longitudinal slit (22) for receiving said curtain (13).

4. High performance door according to claim 3, characterized in, that adjacent to said off center opening (22) there are arranged one, preferably two opposite protrusions (23, 24) for retaining a thickening (25) at the lower end of said curtain (13).

5. High performance door according to claim 4, characterized in, that said thickening (25) is made by gluing, molding and/or crimping a, preferably longitudinal, strip on one or both side of said curtain (13).

6. High performance door according to claim 1, comprising guiding means (18, 19) assigned to one or both side ends of the curtain (13) for substantially vertically guiding said curtain (13) and preferably said bottom beam (15) upon its up and down movement for opening and closing said opening (11).

7. High performance door according to claim 6, characterized in, that said guiding means comprising slide bearing, preferably from synthetic resin material, roller bearing, ball bearing.

8. High performance door according to claim 7, comprising sliders, preferably from synthetic resin material.

9. High performance door according to claim 6, characterized in, that said guiding means comprising at least one cord, wire, rod and/or one profile (18, 19) comprising a channel.

10. High performance door according to claim 1, comprising biasing means for biasing said curtain (13) and/or said rigid bottom beam (15) downwards to accelerate operation.

11. High performance door according to claim 1, comprising a sealing (27) at the lower end of the rigid bottom beam (15).

12. High performance door according to claim 11, characterized in, that said sealing (27) comprising a fastening section (28), preferably with a T-shape, for cooperative connection with a channel (26) at the lower end of the rigid bottom beam (15), said channel comprising a C-shape.

Description

[0020] In the following an embodiment of the invention is described using the figures for illustration. The Figures show:

[0021] FIG. 1 a front view of a high performance door as an embodiment of the invention, and

[0022] FIG. 2 a sectional view of a curtain and a rigid bottom beam of the door of FIG. 1.

[0023] FIG. 1 shows a front view of a high performance door 10 as an embodiment of the invention. As can be seen, the door 10 serves to close an opening 11 in a wall 12 of a building or the like. Preferably, this kind of door 10 is used to open access to machines, thus, the opening 11 can be the opening in a door frame of a fence instead of the wall 12. The door 10 comprises a flexible curtain 13 to close the opening. On the upper end of the opening a housing 14 is positioned. Within the housing 14 a not shown shaft is rotatably mounted. The curtain 13 is at its upper end fixed to the shaft and the shaft is driven by a not shown motor to wound and unwound the curtain 13 to open and close the opening 11. At the lower end of the curtain 13 a rigid bottom beam 15 is attached to smoothen the curtain 13 and to pull the curtain downwardly upon unwinding from the shaft.

[0024] The curtain 13 can be of any suitable material as fabric, sheet material, foam or the like. It may have insulating properties regarding to noise or heat if required. The rigid bottom beam 15 can be manufactured as a hollow profile or solid. The properties as height, thickness, weight and the like can be chosen as required.

[0025] As can be seen further from FIG. 1 the housing is carried by two supports 16, 17 on opposite ends of the opening 11. The supports 16, 17 are frames 16, 17 in the shown embodiment. At the inner sides of the frames 16, 17 facing to the curtain 13 and facing towards profiles 18, 19 are mounted to guide the curtain 13. The profiles 18, 19 are of C-shape with a longitudinal channel thereof to one another. The curtain 13 comprises not shown sliding bricks guided with the respective profile channel to guide the curtain 13 upon opening and closing movement with only little friction.

[0026] FIG. 2 shows a sectional view of a curtain 13 and a rigid bottom beam 15 of the door 10 of FIG. 1. The rigid bottom beam 15 comprises two opposite sides 20, 21. One side 20 is a flush side 20 substantially flushing with the curtain 13. The other side 21 is constructed as an oblique side 21 to reduce the risk for its environment, e.g. people. Since the flush side 20 flushes substantially with the curtain 13 there is no risk for the environment at this side upon opening the door 10.

[0027] Between the sides 20, 21 there is an opening 22 in the rigid bottom beam 15. Adjacent to the opening 22, but, slightly more inside there are two protrusions 23, 24 facing towards one another. As can be seen from FIG. 2 at the lower end of the curtain a thickening 25 is mounted. The curtain 13 is shifted with its lower end in the opening 22 and between the protrusions 24, 25 to locate the thickening 25 at the side of the protrusions 23, 24 opposite to the opening 22. By this way the curtain is fixedly mounted in the opening 22 and between the protrusions 23, 24 since the thickening 25 abuts the protrusions 23, 24 and is too thick to pass through between them.

[0028] The thickening 25 can be made from any suitable material or can be fixed in any suitable manner to the curtain 13. It can be made e.g. from synthetic resin, steel, alumina, wood or the like. It can be made from one, two or more parts glued, crimped, molded or nailed to the curtain 13. In the shown embodiment the thickening 25 has a circular cross section and is glued to the curtain.

[0029] At the lower side of the rigid bottom beam 15 and opposite to the opening 22 the rigid bottom beam comprises a channel 26. The channel 26 has a C-shape cross section. Adjacent to the opening of the C-shape channel 26 there is a sealing 27. The sealing 27 comprises a fastening section 28 adapted to be fastened to the rigid bottom beam. As shown the fastening section 28 is integrally with the sealing a has a T-shape cross section. The T-shape fastening section 28 is received within the C-shape channel 26 for fastening the sealing 27 to the rigid bottom beam. The sealing 27 can be any suitable sealing for noise, airtight or heat insulation purposes or the like as required. Furthermore, the sealing can be of any suitable material, e.g. rubber, plastic, card board, bristle or the like. In the shown embodiment the sealing 27 is made as a profile rubber sealing.

LIST OF REFERENCE NUMBERS

[0030] 10 door [0031] 11 opening [0032] 12 wall [0033] 13 curtain [0034] 14 housing [0035] 15 beam [0036] 16 support [0037] 17 support [0038] 18 profile [0039] 19 profile [0040] 20 flush side [0041] 21 oblique side [0042] 22 opening [0043] 23 protrusion [0044] 24 protrusion [0045] 25 thickening [0046] 26 channel [0047] 27 sealing [0048] 28 fastening section