EP2817471B1 - Device for rolling up and unrolling a material web onto and from a shaft - Google Patents
Device for rolling up and unrolling a material web onto and from a shaft Download PDFInfo
- Publication number
- EP2817471B1 EP2817471B1 EP13706431.7A EP13706431A EP2817471B1 EP 2817471 B1 EP2817471 B1 EP 2817471B1 EP 13706431 A EP13706431 A EP 13706431A EP 2817471 B1 EP2817471 B1 EP 2817471B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- material web
- tensioning
- torque
- additional
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005096 rolling process Methods 0.000 title claims description 26
- 238000003860 storage Methods 0.000 claims description 30
- 230000007423 decrease Effects 0.000 claims description 6
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 description 9
- 238000004146 energy storage Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/40—Roller blinds
- E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
- E06B9/44—Rollers therefor; Fastening roller blinds to rollers
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/40—Roller blinds
- E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/64—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor with lowerable roller
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
- E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
- E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
- E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
- E04F10/0644—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind
- E04F10/0648—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind acting on the roller tube
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/40—Roller blinds
- E06B2009/405—Two rollers
Definitions
- the present invention relates to a device for winding and unwinding of a material web on and from a shaft according to the preamble of claim 1.
- Corresponding devices can serve as a shading device, visual protection device and / or delimiting device.
- the material web is usually attached to a first attachment end to a support structure, for example to a window beam or to a wall.
- a second attachment end opposite the first attachment end the material web is fastened to a circumference of the shaft in such a way that the material web depends on the direction of rotation of the shaft on a central portion of the shaft by rotation about a rotation and symmetry axis Wave is rolled up and down.
- this has at its two axial end regions in each case an edge portion, wherein a respective tensioning cable is attached to the respective peripheries of the edge portions.
- the tension cables can be rolled up and down by rotating the shaft as a function of the direction of rotation on the respective edge sections.
- the attachment of the web on the circumference of the central portion of the shaft and the attachment of the tension cables to the peripheries of the edge portions of the shaft are such that by rotating the shaft in a Abrollburnraum the shaft moves away from the support structure and thereby the web from the central portion of the shaft unwinds, in which Abrollcoolung the shaft, the tension cables are rolled up on the respective edge portions of the shaft.
- the shaft In an arrangement in which the web is to roll in the vertical direction of the shaft, the shaft is driven by the force acting on them gravity and rotated, causing the web to roll off the shaft.
- the shaft is only insufficiently driven by the gravitational force acting on it, so that the shaft has to be turned manually or by a motor.
- the radial distance between the surface material and the axis of rotation decreases with increasing rolling length. If the radial distance between the tensioning cables and the axis of rotation remained constant during the rolling movement of the shaft, the tension of the surface material would depend on the coasting length. In order that the material web always remains uniformly tensioned by the shaft independently of its coasting length, the edge regions of the shaft have such a conical shape that, regardless of the rolling length of the surface material, the radial distance between the tensioning cables and the axis of rotation is always identical to the radial distance of the surface material from the axis of rotation ,
- the shaft must be driven, for example, either manually or by a motor via a separate traction cable which is rotatably connected, for example, to an end face of the shaft in the region of its axis of rotation.
- Object of the present invention is to provide an improved apparatus for winding and unwinding of a web on and from a shaft which comprises fewer components, is easier to install, ensures sufficient tension of the web irrespective of its Ausrollinate and in particular in an arrangement in which the material web is unrolled obliquely or horizontally from the shaft, the shaft is still reliably driven.
- a first radial distance of the material web to any desired rolling length of the material web differs from the axis of rotation of a second radial distance of the tensioning cable assigned to this rolling length to the axis of rotation.
- a first torque exerted on the material web on the shaft differs from a second torque exerted via the tensioning cables.
- the first torque and the second torque are opposite in direction but have different absolute magnitudes, since the first distance is different from the second distance. Consequently, a difference torque results, by means of which the shaft is driven.
- the torque difference corresponds to the product of the applied force with the difference of the first radial distance and the second radial distance. This attacks in other words at the contact point of the material web with the circumference of the central portion of the shaft and causes rotation of the shaft.
- the apparatus according to the invention serve the tension cables on the one hand for tensioning the material web and for guiding the shaft and also serve to drive the shaft, thus for rolling or rolling the material web on or from the central portion of the shaft.
- the device according to the invention comprises only three essential components, namely the material web, the shaft on which the material web up or from which the material web is unwound, and two tension cables, which can be rolled up and unrolled on the edge regions of the shaft.
- the device according to the invention therefore has only a few components, so that their manufacture and their installation is particularly simple. Due to the small number of components beyond the error rate of the device according to the invention is reduced.
- the tensioning cables are designed to be elastic and, in a tensioned state, exert a force directed away from the retaining structure on the shaft, so that the shaft is driven by means of the force exerted by the tensioning cables.
- a corresponding design has the advantage that no separate Kraftausübe adopted such as an electric motor or the like must be used so that the shaft is driven.
- the device comprises an energy storage device operatively connected to the tensioning cables and exerting on the tensioning cables a force directed away from the support structure.
- the power storage device may for example consist of a tension spring or two tension springs or a plurality of tension springs.
- the first distance of the material web to the axis of rotation associated with any run-out length of the material web is greater than the second distance of the tensioning cable associated with the coasting length to the axis of rotation.
- the shaft is driven away from the support structure due to the torque difference between the first torque and the second torque by the force transmitted by the tension cables.
- the material web is always unrolled from the central portion of the shaft when the shaft is not fixed in position, which can be done for example by a fixing device.
- the first distance of the material web to the axis of rotation associated with any length of roll-out of the material web may preferably be smaller than the second distance of the tensioning cable to the axis of rotation associated with this coasting length.
- the first torque exerted on the shaft via the material web is smaller than the second torque exerted on the shaft via the tension cables, so that the shaft due to the torque difference between the first torque and the second torque is driven by the force transmitted by the tension cables to the support structure to.
- the torque difference between the first torque and the second torque at the contact point of the tensioning cables engages the peripheries of the edge portions and causes rotation of the shaft on the support structure. This ensures that the material web is always completely rolled up by a force, more specifically a tensile force on the tension cables on the shaft when the shaft is not fixed in position, which can be done for example by a fixing device.
- the edge portions of the shaft are cylindrical.
- a corresponding embodiment is particularly simple and inexpensive.
- the two edge portions of the shaft are at least partially conical along their respective axial extent, and thus taper along their respective axial extent from a first diameter to a second diameter.
- the first, larger diameter adjacent to the central portion of the shaft but may also be the other, the second, smaller diameter adjacent to the central portion of the shaft.
- a tension of the material web can be maintained during the rolling and rolling movement of the shaft and a corresponding unwinding or unwinding of the material web, since the diameter of the material web changing with the rolling length of the material web the changing diameter of the Tensioning cables on the edge portions of the shaft is compensated.
- the respective tension cables are rolled up on the respective edge portions of the shaft in the direction of the taper of the edge portions.
- the web either shorten the tension cables that exert a tensile force, and / or the power storage device, for example in the form of a tension spring shortens. Due to this shortening, the tensioning cables and / or the energy storage device exert a small force in accordance with Hooke's law.
- the difference between the first distance of the web to the axis of rotation and the second distance of the tensioning cable to the axis of rotation increases with increasing, ie increasing Ausrollin the web. This ensures that the torque difference between the first torque and the second torque over the entire Ausrollin the material web substantially remains constant, so that the shaft is driven at a constant torque and thus the web is unrolled at a constant unwinding speed of the shaft.
- the respective tensioning cables are preferably unrolled from the respective edge sections of the shaft in the direction of thickening of the edge sections.
- the difference between the second distance of the tensioning cable to the axis of rotation and the first distance of the material web to the rotational axis decreases, so that the torque difference over the entire Ausrollin the material web remains substantially constant.
- the device preferably has a tensioning device operatively connected to the tensioning cables and / or the energy storage device for tensioning the tensioning points and / or the energy storage device.
- a tensioning device operatively connected to the tensioning cables and / or the energy storage device for tensioning the tensioning points and / or the energy storage device.
- the device further comprises a rotatably connected to a shaft end face of the shaft in the region of the rotation axis control element, which may be configured, for example, as an operating rope or as an operating lever or as a control chain.
- the shaft can be acted upon manually and / or motor with a force. If the power storage device and / or the tension cables are largely relaxed, the shaft can be moved by means of the control element again against the force exerted by the tension cables and / or by the force storage device in a starting position, so that the tension cables and / or the power storage device are stretched again ,
- the device further comprises a supplementary shaft at the periphery of the first attachment end of the material web is fixed such that by rotating the additional shaft about an axis of rotation, the material web on a central portion of the additional shaft up and is unrolled.
- the additional shaft has in its two axial end regions in each case an edge portion, at the respective peripheries each an additional tensioning cable is attached, wherein the additional tensioning cables on the respective edge portions by rotation of the additional shaft are up and unrolled and fastened to the support structure.
- the material web is rolled up on the central portion of the additional shaft and the tension cables are unrolled from the respective edge portions of the shaft.
- An arbitrary Ausroll the material web associated first radial distance of the material web to the axis of rotation of the additional shaft differs from one of these Ausrollin associated second radial distance of adjectivespannseils to the axis of rotation of the central shaft, so that a force exerted on the material web on the additional shaft first torque of a
- the second torque in the direction and magnitude exerted on the additional shaft via the additional tensioning cables differs such that the additional shaft is driven by a force transmitted by means of the additional tensioning cables due to the torque difference between the first torque and the second torque.
- a shading surface or a privacy screen can be moved back and forth variably in space without the material web must be attached to the support structure and thus ends there.
- a shading surface or screen may be created that appears to be out of contact with a mounting structure and thus appears to be three mounted in space.
- FIG. 1 shows a cross section through a shaft 1, at the periphery of a second attachment end of a material web 2 is attached.
- the material web 2 is wound on the shaft 1 and releases from the shaft at a tangency point at which the material web in the in FIG. 1 Oriented orientation runs vertically upwards.
- a tensioning cable 3 is attached to the circumference of the shaft 1 by one end of the tensioning cable 3 protrudes through an opening in the circumference of the shaft 1 and is knotted together within the shaft to a node 6, so that there is a tension rope attachment 7.
- the tensioning cable 3 and the material web 2 are arranged such that upon unrolling of the material web 2 from the shaft 1, the tensioning cable 3 is rolled up on the shaft 1. If, on the other hand, in the other hand, in the illustration of Figures 1 and 2 the shaft 1 is rotated counterclockwise, the material web 2 is rolled up on the shaft 1, whereas the tensioning cable 3 is unrolled from the shaft 1.
- FIG. 3 shows a schematic representation of the device according to the invention in a front view and in a plan view.
- the material web 2 has a first attachment end 5, on which the material web 2 is attached to a support structure 8.
- the support structure 8 may be, for example, a masonry or any other support structure.
- a second attachment end 4 is attached to the circumference of the shaft 1.
- the material web 2 is in the representation of FIG. 3 completely rolled up on the shaft 1.
- the shaft 1 has at its two axial end regions in each case an edge portion 10, which adjoin the central portion and at the respective peripheries each a tensioning cable 3 is attached.
- the tension cables 3 are up by rolling the shaft 1 on the edge portions 10 and unrolled.
- the other ends of the tensioning cables 3 are in turn fastened to a support structure 8 or to a tensioning cable fastening device 9.
- the tension cables 3 have a certain tension, so that when the material web 2 is rolled up or unrolled from the shaft 1, the shaft 1 is guided in its movement.
- the shaft 1 moves away from the support structure 8.
- the material web 2 is unrolled from the central portion of the shaft 1, and at the same time the tensioning cables 3 are rolled up on the respective edge portions 10 of the shaft 1.
- FIG. 4 shows the device in which the material web 2 is partially unrolled from the central portion of the shaft 1. A rolling of the material web 2 of the central portion of the shaft 1 is thus accompanied by a rolling up of the tensioning cables 3 on the edge portions 10 of the shaft 1.
- the device further comprises a rotatably connected to a shaft end face 13 of the shaft 1 in the region of the axis of rotation control element 11, which may be configured, for example, as a control cable 11, control lever 11 or operating chain 11.
- control element 11 By means of the control element 11, the shaft can be moved up and / or down, so that during a downward movement, the material web 2 rolls from the central portion of the shaft 1, and at an upward movement of the shaft 1, the material web 2 on the central portion of the shaft. 1 roll up.
- FIG. 5 shows a section through a part of the central portion and by an edge portion 10 of the shaft 1 of the device in a state in which the material web 2 largely rolled up on the shaft 1 and the tensioning cable 3 is largely unrolled from the edge portion 10.
- FIG. 6 shows the same area in cross section as FIG. 5 , where in FIG. 6 the material web 2 largely unrolled from the shaft 1 and the tensioning cable 3 is largely rolled up on the edge portion 10 of the shaft 1.
- This condition is the same as in FIG. 4 illustrated state.
- the edge portion 10 of the shaft 1 along its axial extent is tapered and tapers along its axial extent from a first diameter to a second diameter.
- This conical shape for the edge portion 10 has the purpose that the web 2 is always uniformly or approximately evenly stretched regardless of a Ausrollin L of the web 2. Because during the rolling of the material web 2, a first radial distance R1 of the material web 2 is reduced to the axis of rotation of the shaft 1. This during the unrolling of the material web 2 from the shaft 1 becoming smaller first radial distance R1 must be compensated by a second radial distance R2 of the tensioning cable 3 to the axis of rotation during the reeling of the tensioning cable 3 on the edge portion 10 decreases appreciably. As a result, when the material web 2 unrolls from the shaft 1, the same length of the material web 2 is unrolled as the length of the tensioning cable 3 is rolled up on the edge portions 10.
- the tensioning cable 3 is always applied at a curl on the edge portion 10 of the shaft 1 at the correct radius
- the edge piece 10 may have guide grooves 14, so that the tensioning cable 3 is in a wound state on a reeling line 12.
- FIG. 8 shows a schematic side view of the device according to the invention in a state in which the material web 2 is already partially unrolled from the central portion of the shaft 1.
- the Ausrollin L of the material web which represents the length of the unrolled material web 2 of the support structure 8 to the point of contact of the material web 2 with the shaft 1, is in the in FIG. 8 state illustrated about 50% of the maximum Ausrollin L.
- the tensioning cable 3 is in the in FIG. 8 shown partially rolled up on the circumference of the edge portion 10 of the shaft 1.
- the tensioning cable 3 is deflected by a deflection device 22 and is connected to an energy storage device 21 in the form of a tension spring 21.
- the force storage device 21 itself in turn is connected to a holding structure 8.
- the power storage device 21 exerts on the tension cables 3, a tensile force F. Due to the third Newton's law and the connection of the tensioning cable 3 with the material web 2 via the shaft 1, the support structure 8, with which the second attachment end 4 of the material web 2 is connected, exerts an opposing counterforce on the material web 2.
- the counteracting force exerted by the support structure 8 is identical in magnitude to the tensile force F exerted on the tensioning cables 3 by the force storage device 21, but oriented in the opposite direction.
- FIG. 8 it can be seen that a first radial distance R1 of the material web 2 to the axis of rotation of the shaft 1 is greater than a second radial distance R2 of the tension cables 3 to the axis of rotation of the shaft 1. Consequently, a force exerted on the material web 2 on the shaft 1 first torque greater than a second torque exerted on the shaft 1 via the tensioning cables 3, because the first radial distance R1 is greater than the second radial distance R2, and the force acting on the circumference of the central portion of the shaft 1 is identical in magnitude to the tensile force F , which engages the periphery of the edge portion 10 of the shaft 1. Both torques are aligned with each other, so that a difference torque results.
- the differential torque acts on the point of the shaft 1 at which the material web 2 leaves the shaft 1.
- FIG. 8 the material web 2 is aligned horizontally in a rolled-out state. This represents an idealized state.
- the shaft 1 sags a little, so that the angle enclosed by the material web 2 and the tensioning cables 3 is not 180 ° but includes a smaller angle.
- the force ratios in a correspondingly sagging shaft 1 are identical to the force ratios described above.
- the force storage device 21 contracts, so that in the course of the rolling movement the force exerted by the force storage device 21 becomes smaller as the length L of the material web 2 increases. Consequently, with a constant difference of the first radial distance R1 to the second radial distance R2, the shaft 1 would be pulled by the energy storage device 21 with increasing Auslaufin L slower towards the end position of the shaft 1.
- the shape of the edge portions 10 may be adapted such that the difference between the first distance R1 of the web 2 to the axis of rotation of the shaft 1 and the second distance R2 of the tensioning cable 3 to the axis of rotation of the shaft 1 increases with increasing Ausrollin L of the web 2.
- FIG. 9 A related context is in FIG. 9 shown, from which it is apparent that with increasing Ausrollin L of the material web 3 of the second radial distance R2 of the tensioning cable 3 to the axis of rotation falls steeper than the first radial distance R1 of the material web 2 to the axis of rotation.
- FIG. 8 a side view of the device according to the invention shows, in which the material web 2 is unrolled from the shaft 1 due to the application of force by the force storage device 21, shows FIG. 10 the device according to the invention, in which the material web 2 is rolled up on the shaft 1 due to the tensile force F exerted by the force storage device 21.
- the first distance R1 of the material web 2 to the axis of rotation must be smaller than the second radial distance R2 of the tensioning cable assigned to this length L to the rotation axis.
- the scalar quantities of the first and second torques are symbolic with arrows of different sizes FIG. 10 shown.
- the direction of the respective arrows indicates the direction in which the respective torques drive the shaft 1. Due to the effect of the differential torque, the shaft 1 in the representation of FIG. 1 is rotated clockwise, in which the material web 2 is rolled onto the central portion of the shaft 1.
- the force storage device 21 is maximally tensioned when the material web 2 is completely unrolled from the shaft 1, ie when the shaft 1 in the representation of FIG. 10 located on the far right.
- the force storage device 21 contracts and thus relaxes, the shaft 1 is moved in the direction of the second attachment end 4 of the material web 2 due to the resulting torque.
- Due to the contraction of the energy storage device 21 reduces as the Auslaufin L of the web 2 decreases the force exerted by the force storage device 21 force F. So that the shaft 1 is transferred from the force storage device 21 at a constant speed in its final position, the differential torque must be constant. To achieve this, as in FIG.
- the difference between the second distance R2 of the tensioning cable 3 to the axis of rotation and the first distance R1 of the material web 2 to the axis of rotation with increasing Ausrollin L of the web become smaller.
- the torque difference over the entire Ausrollin L of the web 2 can be kept substantially constant, so that the rolling speed of the shaft 1 remains substantially constant.
- FIG. 12 shows the device according to the invention in a schematic side view, wherein the device, a force storage device 21 is not shown.
- the tensioning cables 3 may for example be elastic, so that they themselves develop the tensile force F.
- the device has a rotatably connected to the shaft end face 13 of the shaft in the region of the rotation axis control element 11 in Form of an operating rope 11 includes.
- the operating cable 11 is deflected by a control element deflection 26 so that the operating cable 11, after being deflected by the control element deflection 26, hangs vertically downwards.
- the operating cable 11 or the operating element 11 does not necessarily have to be operated manually, but alternatively can also be driven by a motor.
- FIG. 13 shows an alternative embodiment of the device according to the invention in a state in which the material web 2 is completely rolled out.
- the apparatus comprises, in addition to the shaft 1, a supplementary shaft 15, on the circumference of which the first attachment end 5 of the material web 2 is fastened such that the material web 2 can be rolled up and unrolled on a central portion of the additional shaft 15 by rotating the additional shaft 15 about an axis of rotation.
- the additional shaft 15 in each case has an edge section 10, at the respective peripheries of which an additional tensioning cable 16 is fastened in each case.
- the two additional tension cables 16 are on the respective edge portions 10 of the additional shaft 15 by rotation up and unrolled and attached to the support structure 8.
- the edge portions 10 of the additional shaft 15 are formed as well as the edge portions 10 of the shaft 1 such that an arbitrary Ausrollin L of the web 2 associated first radial distance R1 of the web 2 to the axis of rotation of the auxiliary shaft 15 of one of these Ausrollin L associated second radial Distance R2 of the additional tensioning cable 16 differs from the axis of rotation of the additional shaft 15.
- a first torque exerted on the additional shaft 15 via the material web 2 differs from a second torque exerted via the additional tensioning cables 16 on the additional shaft 15 in the direction and magnitude, so that the additional shaft 15 due to the torque difference between the first torque and the second torque a force transmitted by means of the additional tensioning cables 16 is driven.
- FIG. 14 shows the in FIG. 13 shown device in a state in which the material web 2 is partially rolled up on the shaft 1 and on the additional shaft 15. consequently the position of the rolled-up material web 2 is variable in a certain area between the holding structure 8 and the tensioning cable fastening device 9.
- the device according to the invention may comprise two deflection devices 22, by means of which the tensioning cables 3 or the additional tensioning cables 16 are deflected.
- the tension cables 3 may be connected to each other and / or the additional tension cables 16 may be connected to each other. If the tensioning cables 3 and / or the additional tensioning cables 16 are elastic, the force required for the movement of the shaft 1 or the auxiliary shaft 15 is applied by the tensioning cables 3 or by the additional tensioning cables 16 themselves.
- an energy storage device 21 in the form of a tension spring with which the tensioning cables 3 or the additional tensioning cables 16 are respectively connected. By a corresponding embodiment, only a single tension spring per side is necessary.
- the device comprises for winding and unwinding of a material web 2 on and from a shaft 1, 15 a plurality of webs 2, which are rolled up side by side on the shaft 1, 15 and from this unrolling.
- the operating cable 11 may be fastened between the material webs 2 on the shaft 1, 15.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
- Tents Or Canopies (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Metal Rolling (AREA)
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zum Auf- und Abrollen einer Materialbahn auf und von einer Welle nach dem Oberbegriff des Anspruchs 1. Entsprechende Vorrichtungen können als Beschattungsvorrichtung, Sichtschutzvorrichtung und/oder Abgrenzungsvorrichtung dienen.The present invention relates to a device for winding and unwinding of a material web on and from a shaft according to the preamble of
Bei aus dem Stand der Technik bekannten Vorrichtungen zum Auf- und Abrollen einer Materialbahn auf und von einer Welle ist die Materialbahn an einem ersten Befestigungsende üblicherweise an einer Haltestruktur, beispielsweise an einem Fensterbalken oder an eine Mauer befestigt. An einem dem ersten Befestigungsende gegenüberliegenden zweiten Befestigungsende ist die Materialbahn an einem Umfang der Welle derart befestigt, dass durch Drehen um eine Dreh- und Symmetrieachse die Materialbahn in Abhängigkeit der Drehrichtung der Welle auf einem Zentralabschnitt der Welle auf- und abgerollt wird. Zur Führung bzw. zum Spannen der Welle weist diese an ihren zwei axialen Endbereichen jeweils einen Randabschnitt auf, wobei an den jeweiligen Umfängen der Randabschnitte jeweils ein Spannseil befestigt ist. Die Spannseile sind durch Drehung der Welle in Abhängigkeit der Drehrichtung auf den jeweiligen Randabschnitten auf- und abrollbar. Die Befestigung der Materialbahn am Umfang des Zentralabschnitts der Welle und die Befestigung der Spannseile an den Umfängen der Randabschnitte der Welle sind dergestalt, dass sich durch Drehen der Welle in eine Abrolldrehrichtung die Welle von der Haltestruktur weg bewegt und sich dabei die Materialbahn vom Zentralabschnitt der Welle abrollt, wobei bei dieser Abrolldrehung der Welle die Spannseile auf den jeweiligen Randabschnitten der Welle aufgerollt werden. Wenn die Welle hingegen in eine der Abrolldrehrichtung entgegengesetzte Aufrolldrehrichtung gedreht wird, bewegt sich die Welle auf die Haltestruktur zu, und die Materialbahn wird auf den Zentralabschnitt der Welle aufgerollt, wobei bei dieser Aufrolldrehung der Welle die Spannseile von den jeweiligen Randabschnitten der Welle abgerollt werden.In known from the prior art devices for winding and unwinding of a material web on and from a shaft, the material web is usually attached to a first attachment end to a support structure, for example to a window beam or to a wall. At a second attachment end opposite the first attachment end, the material web is fastened to a circumference of the shaft in such a way that the material web depends on the direction of rotation of the shaft on a central portion of the shaft by rotation about a rotation and symmetry axis Wave is rolled up and down. For guiding or for tensioning the shaft, this has at its two axial end regions in each case an edge portion, wherein a respective tensioning cable is attached to the respective peripheries of the edge portions. The tension cables can be rolled up and down by rotating the shaft as a function of the direction of rotation on the respective edge sections. The attachment of the web on the circumference of the central portion of the shaft and the attachment of the tension cables to the peripheries of the edge portions of the shaft are such that by rotating the shaft in a Abrolldrehrichtung the shaft moves away from the support structure and thereby the web from the central portion of the shaft unwinds, in which Abrolldrehung the shaft, the tension cables are rolled up on the respective edge portions of the shaft. On the other hand, when the shaft is rotated in a roll-up direction opposite to the rolling-down direction, the shaft moves toward the support structure, and the web is rolled up on the central portion of the shaft, rolling the tensioning cables from the respective edge portions of the shaft during this rolling-up rotation of the shaft.
Bei einer Anordnung, bei der die Materialbahn in der vertikalen Richtung von der Welle abrollen soll, wird die Welle durch die auf sie wirkende Schwerkraft angetrieben und in Drehung versetzt, wodurch sich die Materialbahn von der Welle abgerollt. Sobald die Vorrichtung hingegen so montiert wird, dass die Materialbahn schräg oder sogar horizontal ausrollen soll, wird die Welle durch die auf sie wirkende Schwerkraft nur noch unzureichend angetrieben, so dass die Welle manuell oder motorisch gedreht werden muss.In an arrangement in which the web is to roll in the vertical direction of the shaft, the shaft is driven by the force acting on them gravity and rotated, causing the web to roll off the shaft. On the other hand, as soon as the device is mounted in such a way that the material web is intended to roll out obliquely or even horizontally, the shaft is only insufficiently driven by the gravitational force acting on it, so that the shaft has to be turned manually or by a motor.
Während der Abrollbewegung der Welle, bei der sich das Flächenmaterial von der Welle abrollt, vermindert sich mit zunehmender Ausrolllänge der radiale Abstand des Flächenmaterials zur Drehachse. Würde der radiale Abstand der Spannseile zu der Drehachse während der Abrollbewegung der Welle konstant bleiben, würde die Spannung des Flächenmaterials von der Ausrolllänge abhängen. Damit die Materialbahn unabhängig von deren Ausrolllänge von der Welle stets gleichmäßig gespannt bleibt, weisen die Randbereiche der Welle eine derartige konische Form auf, dass unabhängig von der Ausrolllänge des Flächenmaterials radialen Abstand der Spannseile zur Drehachse stets identisch zum radialen Abstand des Flächenmaterials von der Drehachse ist.During the rolling movement of the shaft, in which the surface material rolls off the shaft, the radial distance between the surface material and the axis of rotation decreases with increasing rolling length. If the radial distance between the tensioning cables and the axis of rotation remained constant during the rolling movement of the shaft, the tension of the surface material would depend on the coasting length. In order that the material web always remains uniformly tensioned by the shaft independently of its coasting length, the edge regions of the shaft have such a conical shape that, regardless of the rolling length of the surface material, the radial distance between the tensioning cables and the axis of rotation is always identical to the radial distance of the surface material from the axis of rotation ,
Bei einer entsprecheden aus dem Stand der Technik bekannten Vorrichtung muss die Welle beispielsweise über ein separates Zugseil, das beispielsweise an einer Stirnseite der Welle im Bereich von deren Drehachse drehbeweglich verbunden ist, entweder manuell oder motorisch angetrieben werden.In a corresponding device known from the prior art, the shaft must be driven, for example, either manually or by a motor via a separate traction cable which is rotatably connected, for example, to an end face of the shaft in the region of its axis of rotation.
Die aus dem Stand der Technik bekannten Vorrichtungen weisen somit viele Bauteile auf, damit diese eine befriedigende Funktionalität aufweisen. Folglich sind entsprechende Vorrichtung teuer in ihrer Herstellung und Aufwendig zu installieren. Weiterhin weisen diese Vorrichtungen aufgrund der Vielzahl von Bauteilen eine erhöhte Fehleranfälligkeit auf.The devices known from the prior art thus have many components, so that they have a satisfactory functionality. Consequently, such devices are expensive to manufacture and expensive to install. Furthermore, these devices due to the large number of components on an increased error rate.
So beschreibt beispielsweise die
Eine gattungsgemäße Vorrichtung zum Auf- und Abrollen einer Materialbahn mit Spannseilen ist aus
Aufgabe der vorliegenden Erfindung ist die Bereitstellung einer verbesserten Vorrichtung zum Auf- und Abrollen einer Materialbahn auf und von einer Welle, die weniger Bauteile umfasst, einfacher zu installieren ist, eine ausreichende Spannung der Materialbahn unabhängig von ihrer Ausrolllänge gewährleistet und bei der insbesondere bei einer Anordnung, bei der die Materialbahn schräg oder horizontal von der Welle abgerollt wird, die Welle weiterhin zuverlässig angetrieben wird.Object of the present invention is to provide an improved apparatus for winding and unwinding of a web on and from a shaft which comprises fewer components, is easier to install, ensures sufficient tension of the web irrespective of its Ausrolllänge and in particular in an arrangement in which the material web is unrolled obliquely or horizontally from the shaft, the shaft is still reliably driven.
Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 zum Auf- und Abrollen einer Materialbahn auf und von einer Welle gelöst. Vorteilhafte Ausführungen sind in den Unteransprüchen beschrieben.This object is achieved by a device with the features of
Im genaueren unterscheidet sich bei der erfindungsgemäßen Vorrichtung ein einer beliebigen Ausrolllänge der Materialbahn zugeordneter erster radialer Abstand der Materialbahn zu der Drehachse von einem dieser Ausrolllänge zugeordneten zweiten radialen Abstand des Spannseils zu der Drehachse. Dadurch ist gewährleistet, dass selbst bei einer horizontalen Anbringung der Vorrichtung, bei der die Materialbahn in einem ausgerollten Zustand eine weitgehend horizontale Ausrichtung aufweisen soll, die Materialbahn zuverlässig von dem Zentralabschnitt der Welle ab- oder aufgewickelt wird, wenn eine Kraft über die Spannseile auf die Welle ausgeübt wird.More specifically, in the device according to the invention, a first radial distance of the material web to any desired rolling length of the material web differs from the axis of rotation of a second radial distance of the tensioning cable assigned to this rolling length to the axis of rotation. This ensures that even with a horizontal attachment of the device in which the material web in a rolled state should have a substantially horizontal orientation, the material web reliably from the central portion of the shaft or wound off when a force on the tension cables on the wave is exercised.
Eine über die Spannseile auf die Welle übertragene Kraft greift an den Punkten der Randabschnitte an, an denen die Spannseile sich von den entsprechenden Randabschnitten der Welle tangential lösen. Da die Spannseile mit der Materialbahn über die Welle verbunden sind, wird diese Kraft auf die Haltestruktur ausgeübt, die gemäß dem dritten Newtonschen Gesetzt (Kraft = Gegenkraft) eine Gegenkraft aufbringt. Diese Gegenkraft greift an dem Kontaktpunkt der Materialbahn mit dem Zentralabschnitt der Welle an und wirkt entsprechend dem Newtonschen Reaktionsprinzip in die entgegengesetzte Richtung wie die mittels der Spannseile üvertragene Kraft. Aufgrund des unterschiedlichen radialen Abstandes der Materialbahn zu der Drehachse und des Abstandes der Spannseile zu der Drehachse unterscheidet sich ein über die Materialbahn auf die Welle ausgeübtes erstes Drehmoment von einem über die Spannseile ausgeübten zweiten Drehmoment. Das erste Drehmoment und das zweite Drehmoment sind in ihrer Richtung einander entgegengesetzt weisen jedoch unterschiedliche Absolutgrößen auf, da sich der erste Abstand von dem zweiten Abstand unterscheidet. Folglich resultiert ein Differenzdrehmoment, mittels dem die Welle angetrieben wird.A force transmitted to the shaft via the tensioning cables acts on the points of the edge sections at which the tensioning cables detach tangentially from the corresponding edge sections of the shaft. Since the tension cables are connected to the material web via the shaft, this force is exerted on the support structure, which applies a counter force according to the third Newton's law (force = counter force). This counterforce acts on the contact point of the material web with the central portion of the shaft and acts according to the Newtonian reaction principle in the opposite direction as the üvertragene means of the tension cables force. Due to the different radial distance of the material web to the axis of rotation and the distance of the tensioning cables to the axis of rotation, a first torque exerted on the material web on the shaft differs from a second torque exerted via the tensioning cables. The first torque and the second torque are opposite in direction but have different absolute magnitudes, since the first distance is different from the second distance. Consequently, a difference torque results, by means of which the shaft is driven.
Die Drehmomentdifferenz entspricht dem Produkt der ausgeübten Kraft mit der Differenz des ersten radialen Abstandes und des zweiten radialen Abstandes. Diese greift mit anderen Worten am Kontaktpunkt der Materialbahn mit dem Umfang des Zentralabschnitts der Welle an und bewirkt eine Drehung der Welle.The torque difference corresponds to the product of the applied force with the difference of the first radial distance and the second radial distance. This attacks in other words at the contact point of the material web with the circumference of the central portion of the shaft and causes rotation of the shaft.
Bei der erfindungsgemäßen Vorrichtung dienen die Spannseile zum einen zum Spannen der Materialbahn und zum Führen der Welle und dienen darüber hinaus zum Antreiben der Welle, folglich zum Ausrollen bzw. Einrollen der Materialbahn auf bzw. von dem Zentralabschnitt der Welle. Die erfindungsgemäße Vorrichtung umfasst lediglich drei essentielle Bauteile, nämlich die Materialbahn, die Welle, auf der die Materialbahn auf- bzw. von der die Materialbahn abgewickelt wird, und zwei Spannseile, die auf den Randbereichen der Welle auf- und abgerollt werden können. Die erfindungsgemäße Vorrichtung weist folglich lediglich wenige Bauteile auf, so dass deren Herstellung und deren Installation besonders einfach ist. Aufgrund der kleinen Anzahl von Bauteilen ist darüber hinaus die Fehleranfälligkeit der erfindungsgemäßen Vorrichtung reduziert.In the apparatus according to the invention serve the tension cables on the one hand for tensioning the material web and for guiding the shaft and also serve to drive the shaft, thus for rolling or rolling the material web on or from the central portion of the shaft. The device according to the invention comprises only three essential components, namely the material web, the shaft on which the material web up or from which the material web is unwound, and two tension cables, which can be rolled up and unrolled on the edge regions of the shaft. The device according to the invention therefore has only a few components, so that their manufacture and their installation is particularly simple. Due to the small number of components beyond the error rate of the device according to the invention is reduced.
Vorzugsweise sind die Spannseile elastisch ausgeführt und üben in einem gespannten Zustand eine von der Haltestruktur weg gerichtete Kraft auf die Welle aus, so dass die Welle mittels der durch die Spannseile ausgeübten Kraft angetrieben wird. Eine entsprechende Ausführung bietet den Vorteil, dass keine separate Kraftausübeeinrichtung wie beispielsweise ein Elektromotor oder ähnliches verwendet werden muss, damit die Welle angetrieben wird.Preferably, the tensioning cables are designed to be elastic and, in a tensioned state, exert a force directed away from the retaining structure on the shaft, so that the shaft is driven by means of the force exerted by the tensioning cables. A corresponding design has the advantage that no separate Kraftausübeeinrichtung such as an electric motor or the like must be used so that the shaft is driven.
Vorzugsweise umfasst die Vorrichtung eine Kraftspeichervorrichtung, die mit den Spannseilen wirkverbunden ist und auf die Spannseile eine von der Haltestruktur weg gerichtete Kraft ausübt. Dadurch kann die Welle mittels der durch die Kraftspeichervorrichtung ausgeübten Kraft angetrieben werden. Die Kraftspeichervorrichtung kann beispielsweise aus einer Zugfeder oder auch aus zwei Zugfedern oder einer Vielzahl von Zugfedern bestehen. Vorzugsweise ist der einer beliebigen Ausrolllänge der Materialbahn zugeordnete erste Abstand der Materialbahn zu der Drehachse größer als der der Ausrolllänge zugeordnete zweite Abstand des Spannseils zu der Drehachse. Durch eine entsprechende Ausführung ist gewährleistet, dass das über die Materialbahn auf die Welle ausgeübte erste Drehmoment größer ist als das über die Spannseile auf die Welle ausgeübte zweite Drehmoment. Die Welle wird aufgrund der Drehmomentdifferenz zwischen dem ersten Drehmoment und dem zweiten Drehmoment durch die mittels der Spannseile übertragenen Kraft von der Haltestruktur weg angetrieben. Mit anderen Worten greift an dem Kontaktpunkt der Materialbahn an dem Umfang des Zentralabschnitts der Welle die Drehmomentdifferenz zwischen dem ersten Drehmoment und dem zweiten Drehmoment an, so dass aufgrund dieser Drehmomentdifferenz die Welle derart angetrieben wird, dass sich diese von der Haltestruktur weg bewegt.Preferably, the device comprises an energy storage device operatively connected to the tensioning cables and exerting on the tensioning cables a force directed away from the support structure. Thereby, the shaft can be driven by means of the force exerted by the force storage device. The power storage device may for example consist of a tension spring or two tension springs or a plurality of tension springs. Preferably, the first distance of the material web to the axis of rotation associated with any run-out length of the material web is greater than the second distance of the tensioning cable associated with the coasting length to the axis of rotation. An appropriate design ensures that the first torque exerted on the shaft via the material web is greater than the second torque exerted on the shaft via the tension cables. The shaft is driven away from the support structure due to the torque difference between the first torque and the second torque by the force transmitted by the tension cables. In other words, acts on the contact point of the web on the circumference of the central portion of the shaft, the torque difference between the first torque and the second torque, so that due to this torque difference, the shaft is driven so that it moves away from the support structure.
Folglich wird bei einer entsprechenden Ausführung der Vorrichtung die Materialbahn immer von dem Zentralabschnitt der Welle abgerollt, wenn die Welle in ihrer Position nicht fixiert ist, was beispielsweise durch eine Fixiereinrichtung erfolgen kann.Consequently, in a corresponding embodiment of the device, the material web is always unrolled from the central portion of the shaft when the shaft is not fixed in position, which can be done for example by a fixing device.
Andererseits kann der einer beliebigen Ausrolllänge der Materialbahn zugeordnete erste Abstand der Materialbahn zu der Drehachse vorzugsweise kleiner sein als der dieser Ausrolllänge zugeordnete zweite Abstand des Spannseils zu der Drehachse. Dadurch ist das über die Materialbahn auf die Welle ausgeübte erste Drehmoment kleiner als das über die Spannseile auf die Welle ausgeübte zweite Drehmoment, so dass die Welle aufgrund der Drehmomentdifferenz zwischen dem ersten Drehmoment und dem zweiten Drehmoment durch die mittels der Spannseile übertragenen Kraft auf die Haltestruktur zu angetrieben wird. Mit anderen Worten greift die Drehmomentdifferenz zwischen dem ersten Drehmoment und dem zweiten Drehmoment an dem Kontaktpunkt der Spannseile an den Umfängen der Randabschnitte an und bewirkt eine Drehung der Welle auf die Haltestruktur hin. Dadurch ist gewährleistet, dass die Materialbahn durch eine Krafteinwirkung, im Genaueren eine Zugkraft auf die Spannseile stets komplett auf der Welle aufgerollt wird, wenn die Welle in ihrer Position nicht fixiert wird, was beispielsweise durch eine Fixiereinrichtung erfolgen kann.On the other hand, the first distance of the material web to the axis of rotation associated with any length of roll-out of the material web may preferably be smaller than the second distance of the tensioning cable to the axis of rotation associated with this coasting length. As a result, the first torque exerted on the shaft via the material web is smaller than the second torque exerted on the shaft via the tension cables, so that the shaft due to the torque difference between the first torque and the second torque is driven by the force transmitted by the tension cables to the support structure to. In other words, the torque difference between the first torque and the second torque at the contact point of the tensioning cables engages the peripheries of the edge portions and causes rotation of the shaft on the support structure. This ensures that the material web is always completely rolled up by a force, more specifically a tensile force on the tension cables on the shaft when the shaft is not fixed in position, which can be done for example by a fixing device.
Vorzugsweise sind die Randabschnitte der Welle zylinderförmig ausgestaltet. Eine entsprechende Ausgestaltung ist besonders einfach und kostengünstig.Preferably, the edge portions of the shaft are cylindrical. A corresponding embodiment is particularly simple and inexpensive.
Vorzugsweise sind die zwei Randabschnitt der Welle entlang ihrer jeweiligen axialen Erstreckung zumindest teilweise konisch ausgebildet und verjüngen sich demzufolge entlang ihrer jeweiligen axialen Erstreckung von einem ersten Durchmesser zu einem zweiten Durchmesser. Dabei kann der erste, größere Durchmesser an dem Zentralabschnitt der Welle angrenzen, jedoch kann auch andersrum der zweite, kleinere Durchmesser an dem Zentralabschnitt der Welle angrenzen.Preferably, the two edge portions of the shaft are at least partially conical along their respective axial extent, and thus taper along their respective axial extent from a first diameter to a second diameter. In this case, the first, larger diameter adjacent to the central portion of the shaft, but may also be the other, the second, smaller diameter adjacent to the central portion of the shaft.
Aufgrund einer entsprechenden Ausgestaltung der Randbereiche der Welle kann eine während der Aufroll- und Abrollbewegung der Welle und einer entsprechenden Aufrollung bzw. Abrollung der Materialbahn von der Welle eine Spannung der Materialbahn aufrechterhalten werden, da der sich mit der Abrolllänge der Materialbahn ändernde Durchmesser der Materialbahn durch den sich ändernden Durchmesser der Spannseile auf den Randabschnitten der Welle kompensiert wird.Due to a corresponding configuration of the edge regions of the shaft, a tension of the material web can be maintained during the rolling and rolling movement of the shaft and a corresponding unwinding or unwinding of the material web, since the diameter of the material web changing with the rolling length of the material web the changing diameter of the Tensioning cables on the edge portions of the shaft is compensated.
Vorzugsweise werden bei Drehung der Welle in Abrolldrehrichtung, bei der sich die Materialbahn von dem Zentralabschnitt der Welle abrollt, die jeweiligen Spannseile auf den jeweiligen Randabschnitten der Welle in Richtung der Verjüngung der Randabschnitte aufgerollt. Dadurch ist gewährleistet, dass die Spannung der Materialbahn ausreichend aufrechterhalten bleibt, denn bei einem Abrollen der Materialbahn von dem Zentralabschnitt der Welle verringert sich der erste radiale Abstand der Materialbahn von der Drehachse mit zunehmender Ausrolllänge der Materialbahn, so dass dieser kleiner werdende radiale erste Abstand dadurch kompensiert wird, dass die jeweiligen Spannseile während ihrer Aufrollbewegung in Richtung der Verjüngung der Randabschnitt aufgerollt werden.Preferably, upon rotation of the shaft in Abrolldrehrichtung in which the material web unrolls from the central portion of the shaft, the respective tension cables are rolled up on the respective edge portions of the shaft in the direction of the taper of the edge portions. This ensures that the tension of the material web remains sufficiently maintained, because when the material web rolls off the central portion of the shaft, the first radial distance of the material web from the axis of rotation decreases with increasing length of the material web, so that this becomes smaller radial first distance is compensated that the respective tensioning cables are rolled up during their rolling movement in the direction of the taper of the edge portion.
Mit steigender Ausrolllänge der Materialbahn verkürzen sich entweder die Spannseile, die eine Zugkraft ausüben, und/oder die Kraftspeichervorrichtung beispielsweise in Form einer Zugfeder verkürzt sich. Aufgrund dieser Verkürzung üben die Spannseile und/oder die Kraftspeichervorrichtung gemäß dem Hookschen Gesetz eine kleiner Kraft aus. Zum Kompensieren dieser während des Ausrollvorganges der Materialbahn kleiner werdenden Kraft vergrößert sich vorzugsweise die Differenz zwischen dem ersten Abstand der Materialbahn zu der Drehachse und dem zweiten Abstand des Spannseils zu der Drehachse mit steigender, d. h. größer werdender Ausrolllänge der Materialbahn. Dadurch ist gewährleistet, dass die Drehmomentdifferenz zwischen dem ersten Drehmoment und dem zweiten Drehmoment über die gesamte Ausrolllänge der Materialbahn im Wesentlichen konstant bleibt, so dass die Welle mit einem konstanten Drehmoment angetrieben wird und die Materialbahn folglich mit einer konstanten Abrollgeschwindigkeit von der Welle abgerollt wird.With increasing Ausrolllänge the web either shorten the tension cables that exert a tensile force, and / or the power storage device, for example in the form of a tension spring shortens. Due to this shortening, the tensioning cables and / or the energy storage device exert a small force in accordance with Hooke's law. To compensate for this decreasing force during the rolling of the web, the difference between the first distance of the web to the axis of rotation and the second distance of the tensioning cable to the axis of rotation increases with increasing, ie increasing Ausrolllänge the web. This ensures that the torque difference between the first torque and the second torque over the entire Ausrolllänge the material web substantially remains constant, so that the shaft is driven at a constant torque and thus the web is unrolled at a constant unwinding speed of the shaft.
Vorzugsweise werden andererseits bei Drehung der Welle in Aufrolldrehrichtung, bei der die Materialbahn auf dem Zentralabschnitt der Welle aufgerollt wird, die jeweiligen Spannseile von den jeweiligen Randabschnitten der Welle in Richtung der Verdickung der Randabschnitte abgerollt.On the other hand, on rotation of the shaft in the roll-up direction of rotation, in which the material web is rolled up on the central section of the shaft, the respective tensioning cables are preferably unrolled from the respective edge sections of the shaft in the direction of thickening of the edge sections.
Vorzugsweise verkleinert sich dabei die Differenz zwischen dem zweiten Abstand des Spannseils zu der Drehachse und dem ersten Abstand der Materialbahn zu der Drehachse, so dass die Drehmomentdifferenz über die gesamte Ausrolllänge der Materialbahn im Wesentlichen konstant bleibt.Preferably, the difference between the second distance of the tensioning cable to the axis of rotation and the first distance of the material web to the rotational axis decreases, so that the torque difference over the entire Ausrolllänge the material web remains substantially constant.
Mit kleiner werdender Ausrolllänge der Materialbahn verkürzen sich nämlich entweder die Spannseile und/oder die Kraftspeichervorrichtung, so dass diese eine kleinere Kraft ausüben. Diese Kraftreduzierung wird durch die größer werdende Differenz zwischen dem zweiten Abstand und dem ersten Abstand kompensiert, so dass die Welle mittels der ausgeübten Kraft mit einer annähernd konstanten Geschwindigkeit in Richtung der Haltestruktur angetrieben wird.In fact, as the length of the material web becomes smaller, either the tensioning cables and / or the force-storing device are shortened so that they exert a smaller force. This force reduction is compensated by the increasing difference between the second distance and the first distance, so that the shaft is driven by means of the applied force at an approximately constant speed in the direction of the support structure.
Vorzugsweise weist die Vorrichtung eine mit den Spannseilen und/oder der Kraftspeichervorrichtung wirkverbundenen Spanneinrichtung zum Spannen der Spannsiele und/oder der Kraftspeichervorrichtung auf. Dies bietet den Vorteil, dass in Abhängigkeit der Winklelorientierung der ausgerollten Materialbahn und in Abhängigkeit der demzufolge notwendigen Kräfte zum Ausrollen bzw. Einrollen der Materialbahn eine entsprechend angepasste Vorspannung aufgebracht werden kann. Eine entsprechende Spanneinrichtung kann beispielsweise in Form eines Spannschlosses realisiert sein.The device preferably has a tensioning device operatively connected to the tensioning cables and / or the energy storage device for tensioning the tensioning points and / or the energy storage device. This offers the advantage that depending on the angular orientation of the rolled-up material web and depending on the accordingly necessary forces for rolling or curling the web, a suitably adapted bias can be applied. A corresponding clamping device can be realized for example in the form of a turnbuckle.
Vorzugsweise weist die Vorrichtung ferner ein mit einer Wellenstirnseite der Welle im Bereich der Drehachse drehbeweglich verbundenes Bedienelement auf, das beispielsweise als Bedienseil oder als Bedienhebel oder als Bedienkette ausgestaltet sein kann. Mittels des Bedienelements kann die Welle manuell und/oder motorisch mit einer Kraft beaufschlagt werden. Wenn die Kraftspeichervorrichtung und/oder die Spannseile größtenteils entspannt sind, kann die Welle mittels des Bedienelements wieder gegen die durch die Spannseile und/oder durch die Kraftspeichervorrichtung ausgeübte Kraft in eine Ausgangsstellung verschoben werden, so dass die Spannseile und/oder die Kraftspeichervorrichtung wieder gespannt werden.Preferably, the device further comprises a rotatably connected to a shaft end face of the shaft in the region of the rotation axis control element, which may be configured, for example, as an operating rope or as an operating lever or as a control chain. By means of the control element, the shaft can be acted upon manually and / or motor with a force. If the power storage device and / or the tension cables are largely relaxed, the shaft can be moved by means of the control element again against the force exerted by the tension cables and / or by the force storage device in a starting position, so that the tension cables and / or the power storage device are stretched again ,
In einer weiteren bevorzugten Ausführungsform umfasst die Vorrichtung ferner eine Zusatzwelle an deren Umfang das erste Befestigungsende der Materialbahn derart befestigt ist, dass durch Drehen der Zusatzwelle um eine Drehachse die Materialbahn auf einem Zentralabschnitt der Zusatzwelle auf- und abrollbar ist. Die Zusatzwelle weist in ihren zwei axialen Endbereichen jeweils einen Randabschnitt auf, an deren jeweiligen Umfängen jeweils ein Zusatzspannseil befestigt ist, wobei die Zusatzspannseile auf den jeweiligen Randabschnitten durch Drehung der Zusatzwelle auf- und abrollbar sind und an der Haltestruktur befestigbar sind. Durch Drehen der Zusatzwelle in eine Abrolldrehrichtung, durch die sich die Zusatzwelle auf die Haltestruktur zu bewegt, wird die Materialbahn vom Zentralabschnitt der Zusatzwelle abgerollt und die Zusatzspannseile werden auf den jeweiligen Randabschnitten der Zusatzwelle aufgerollt. Durch Drehen der Zusatzwelle in eine Aufrolldrehrichtung, durch die sich die Zusatzwelle von der Haltestruktur wegbewegt, wird die Materialbahn auf dem Zentralabschnitt der Zusatzwelle aufgerollt und die Spannseile werden von den jeweiligen Randabschnitten der Welle abgerollt. Ein einer beliebigen Ausrolllänge der Materialbahn zugeordneter erster radialer Abstand der Materialbahn zu der Drehachse der Zusatzwelle unterscheidet sich von einem dieser Ausrolllänge zugeordneten zweiten radialen Abstand des Zusatzspannseils zu der Drehachse der Zentralwelle, so dass sich ein über die Materialbahn auf die Zusatzwelle ausgeübtes erstes Drehmoment von einem über die Zusatzspannseile auf die Zusatzwelle ausgeübten zweiten Drehmoment in Richtung und Größe derart unterscheidet, dass die Zusatzwelle aufgrund der Drehmomentdifferenz zwischen dem ersten Drehmoment und dem zweiten Drehmoment durch eine mittels der Zusatzspannseile übertragenen Kraft angetrieben wird.In a further preferred embodiment, the device further comprises a supplementary shaft at the periphery of the first attachment end of the material web is fixed such that by rotating the additional shaft about an axis of rotation, the material web on a central portion of the additional shaft up and is unrolled. The additional shaft has in its two axial end regions in each case an edge portion, at the respective peripheries each an additional tensioning cable is attached, wherein the additional tensioning cables on the respective edge portions by rotation of the additional shaft are up and unrolled and fastened to the support structure. By turning the auxiliary shaft in a Abrolldrehrichtung through which the additional shaft to the support structure to moved, the web is unrolled from the central portion of the auxiliary shaft and the additional tension cables are rolled up on the respective edge portions of the additional shaft. By rotating the auxiliary shaft in a Aufrolldrehrichtung through which the additional shaft moves away from the support structure, the material web is rolled up on the central portion of the additional shaft and the tension cables are unrolled from the respective edge portions of the shaft. An arbitrary Ausrolllänge the material web associated first radial distance of the material web to the axis of rotation of the additional shaft differs from one of these Ausrolllänge associated second radial distance of Zusatzspannseils to the axis of rotation of the central shaft, so that a force exerted on the material web on the additional shaft first torque of a The second torque in the direction and magnitude exerted on the additional shaft via the additional tensioning cables differs such that the additional shaft is driven by a force transmitted by means of the additional tensioning cables due to the torque difference between the first torque and the second torque.
Durch eine entsprechende Vorrichtung kann beispielsweise eine Beschattungsfläche oder eine Sichtschutzfläche variabel im Raum hin und her geschoben werden, ohne dass die Materialbahn an der Haltestruktur befestigt sein muss und folglich dort endet. So kann beispielsweise eine Beschattungsfläche oder eine Sichtschutzfläche erschaffen werden, die scheinbar keinen Kontakt zu einer Befestigungsstruktur hat und somit drei im Raum angebracht zu sein scheint.By a corresponding device, for example, a shading surface or a privacy screen can be moved back and forth variably in space without the material web must be attached to the support structure and thus ends there. For example, a shading surface or screen may be created that appears to be out of contact with a mounting structure and thus appears to be three mounted in space.
Weitere Vorteile, Einzelheiten und Merkmale der Erfindung ergeben sich nachfolgend aus den erläuterten Ausführungsbeispielen. Dabei zeigen im Einzelnen:
- Figur 1:
- einen Schnitt durch eine Welle mit einer aufgerollten, flexiblen Materialbahn und mit einem an der Welle befestigten Spannseil;
- Figur 2:
- einen Schnitt durch die Welle mit einem daran befestigtem Spannseil;
- Figur 3:
- eine Frontalansicht bzw. eine Draufsicht auf die erfindungsgemäße Vorrichtung, bei der die Materialbahn auf der Welle aufgerollt ist;
- Figur 4:
- eine Frontalansicht bzw. eine Draufsicht auf die erfindungsgemäße Vorrichtung, bei der die Materialbahn von der Welle abgerollt ist;
- Figur 5:
- einen Schnitt durch einen Teil des Zentralabschnitts der Welle und durch einen Endbereich der Welle, wobei die Materialbahn auf dem Zentralabschnitt aufgewickelt und das Spannseil von dem Randabschnitt abgerollt ist;
- Figur 6:
- die in
dargestellte Vorrichtung, wobei die Materialbahn von dem Zentralabschnitt und das Spannseil auf dem Randabschnitt aufgerollt ist;Figur 5 - Figur 7:
- ein Schnitt durch einen Endbereich des Zentralabschnitts der Welle und durch einen Randabschnitt der Welle, der Führungsrillen für das Spannseil aufweist;
- Figur 8:
- eine schematische Seitenansicht der erfindungsgemäßen Vorrichtung, bei der ein erster radialer Abstand der Materialbahn zur Drehachse größer ist als ein zweiter radialer Abstand des Spannseils zur Drehachse;
- Figur 9:
- ein Diagramm zum Darstellen der Abhängigkeiten des ersten radialen Abstandes und des zweiten radialen Abstandes von der Ausrolllänge der Materialbahn;
- Figur 10:
- eine schematische Seitenansicht der erfindungsgemäßen Vorrichtung, bei der der erste radiale Abstand der Materialbahn zur Drehachse kleiner ist als der zweite radiale Abstand des Spannseils zur Drehachse;
- Figur 11:
- ein Diagramm zur Darstellung der Abhängigkeiten des ersten radialen Abstandes und des zweiten radialen Abstandes von der Ausrolllänge der Materialbahn;
- Figur 12:
- eine Seitenansicht der erfindungsgemäßen Vorrichtung mit einem an der Welle befestigten Bedienelement, wobei die Materialbahn eine schräge Ausrichtung aufweist;
- Figur 13:
- eine Frontalansicht bzw. eine Draufsicht auf die erfindungsgemäße Vorrichtung gemäß einer weiteren Ausführungsform, die zwei Wellen umfasst, auf der die Materialbahn aufgewickelt werden kann, wobei die Materialbahn von den zwei Wellen abgerollt ist; und
- Figur 14:
- die in
dargestellte Vorrichtung, bei der die Materialbahn auf den zwei Wellen größtenteils aufgewickelt ist.Figur 13
- FIG. 1:
- a section through a shaft with a rolled-up, flexible material web and with a shaft attached to the tensioning cable;
- FIG. 2:
- a section through the shaft with a tensioning cable attached thereto;
- FIG. 3:
- a front view and a plan view of the device according to the invention, in which the material web is rolled up on the shaft;
- FIG. 4:
- a front view and a plan view of the device according to the invention, in which the material web is unrolled from the shaft;
- FIG. 5:
- a section through a part of the central portion of the shaft and through an end portion of the shaft, wherein the material web is wound on the central portion and the tensioning cable is unrolled from the edge portion;
- FIG. 6:
- in the
FIG. 5 illustrated apparatus, wherein the web of material from the central portion and the tensioning cable is rolled up on the edge portion; - FIG. 7:
- a section through an end portion of the central portion of the shaft and through an edge portion of the shaft, the guide grooves for the tensioning cable;
- FIG. 8:
- a schematic side view of the device according to the invention, in which a first radial distance of the material web to the axis of rotation is greater than a second radial distance of the tensioning cable to the axis of rotation;
- FIG. 9:
- a diagram showing the dependencies of the first radial distance and the second radial distance of the Ausrolllänge the material web;
- FIG. 10:
- a schematic side view of the device according to the invention, in which the first radial distance of the material web to the axis of rotation is smaller than the second radial distance of the tensioning cable to the axis of rotation;
- FIG. 11:
- a diagram illustrating the dependencies of the first radial distance and the second radial distance from the Ausrolllänge the material web;
- FIG. 12:
- a side view of the device according to the invention with an attached to the shaft control element, wherein the material web has an oblique orientation;
- FIG. 13:
- a frontal view and a plan view of the device according to the invention according to a further embodiment comprising two shafts, on which the material web can be wound up, wherein the material web is unwound from the two shafts; and
- FIG. 14:
- in the
FIG. 13 shown device in which the material web is largely wound on the two shafts.
In der nun folgenden Beschreibung bezeichnen gleiche Bezugszeichen gleiche Bauteile bzw. gleiche Merkmale, so dass eine in Bezug auf eine Figur durchgeführte Beschreibung bezüglich eines Bauteils auch für die anderen Figuren gilt, so dass eine wiederholende Beschreibung vermieden wird.In the following description, like reference numerals denote like components and like features, so that a description made with respect to a figure with respect to a component also applies to the other figures, so that a repetitive description is avoided.
Wie aus
Die Welle 1 weist an ihren zwei axialen Endbereichen jeweils einen Randabschnitt 10 auf, die an dem Zentralabschnitt angrenzen und an deren jeweiligen Umfängen jeweils ein Spannseil 3 befestigt ist. Die Spannseile 3 sind dabei durch Drehung der Welle 1 auf den Randabschnitten 10 auf- und abrollbar. Die anderen Enden der Spannseile 3 sind wiederum an eine Haltestruktur 8 bzw. an einer Spannseilbefestigungseinrichtung 9 befestigt. Dabei weisen die Spannseile 3 eine gewisse Spannung auf, so dass bei einem Aufrollen bzw. Abrollen der Materialbahn 2 von der Welle 1 die Welle 1 in ihrer Bewegung geführt ist. Durch Drehen der Welle 1 in eine Abrolldrehrichtung bewegt sich die Welle 1 von der Haltestruktur 8 weg. Dabei wird die Materialbahn 2 von dem Zentralabschnitt der Welle 1 abgerollt, und gleichzeitig werden die Spannseile 3 auf den jeweiligen Randabschnitten 10 der Welle 1 aufgerollt.The
Die Vorrichtung weist ferner ein mit einer Wellenstirnseite 13 der Welle 1 im Bereich der Drehachse drehbeweglich verbundenes Bedienelement 11 auf, das beispielsweise als Bedienseil 11, Bedienhebel 11 oder als Bedienkette 11 ausgestaltet sein kann. Mittels des Bedienelements 11 kann die Welle auf und/oder ab bewegt werden, so dass bei einer Abwärtsbewegung sich die Materialbahn 2 von dem Zentralabschnitt der Welle 1 abrollt, und sich bei einer Aufwärtsbewegung der Welle 1 sich die Materialbahn 2 auf dem Zentralabschnitt der Welle 1 aufrollt.The device further comprises a rotatably connected to a shaft end face 13 of the
Aus den
Damit das Spannseil 3 bei einer Aufrollung auf dem Randabschnitt 10 der Welle 1 immer am richtigen Radius anliegt, kann das Randstück 10 Führungsrillen 14 aufweisen, so dass das Spannseil 3 in einem aufgewickelten Zustand auf einer Aufrolllinie 12 liegt.Thus, the
Das Spannseil 3 ist in dem in
Die Kraftspeichervorrichtung 21 übt auf die Spannseile 3 eine Zugkraft F aus. Aufgrund des dritten Newtonschen Gesetztes und der Verbindung des Spannseils 3 mit der Materialbahn 2 über die Welle 1 übt die Haltestruktur 8, mit der das zweite Befestigungsende 4 der Materialbahn 2 verbunden ist, eine entgegengesetzte Gegenkraft auf die Materialbahn 2 aus. Die durch die Haltestruktur 8 ausgeübte Gegenkraft ist von ihrem Betrag her identisch mit der von der Kraftspeichervorrichtung 21 auf die Spannseile 3 ausgeübten Zugkraft F, jedoch entgegengesetzt orientiert.The
Aus
Mit anderen Worten greift das Differenzdrehmoment an dem Punkt der Welle 1 an, an dem die Materialbahn 2 die Welle 1 verlässt.In other words, the differential torque acts on the point of the
Wenn die Materialbahn 2 in einem abgewickelten Zustand nicht horizontal ausgerichtet ist sondern schräg ausgerichtet ist, dann wirkt auf die Welle 1 nicht lediglich nur die durch die Kraftspeichervorrichtung 21 erzeugte Kraft F sondern darüber hinaus auch eine Hangabtriebskomponente der Schwerkraft, die zusätzlich zu einem Abrollen der Materialbahn 2 von der Welle 1 beiträgt.If the
Bei der erfindungsgemäßen Vorrichtung ist folglich gewährleistet, dass die abgerollte Materialbahn 2 durch das Spannseil 3 gespannt ist und darüber hinaus das Spannseil 3 die Welle 1 antreibt.In the apparatus according to the invention is thus ensured that the unrolled
Während der Ausrollbewegung der Welle 1 zieht sich die Kraftspeichervorrichtung 21 zusammen, so dass im Verlauf der Ausrollbewegung die von der Kraftspeichervorrichtung 21 ausgeübte Kraft mit größer werdender Ausrolllänge L der Materialbahn 2 kleiner wird. Folglich würde bei einer konstanten Differenz des ersten radialen Abstands R1 zu dem zweiten radialen Abstand R2 die Welle 1 von der Kraftspeichervorrichtung 21 mit zunehmender Ausrolllänge L langsamer in Richtung der Endposition der Welle 1 gezogen werden.During the rolling movement of the
Damit die Drehmomentdifferenz jedoch über die gesamte Ausrolllänge L der Materialbahn 2 im Wesentlichen konstant bleibt, kann die Form der Randabschnitte 10 derart angepasst sein, dass sich die Differenz zwischen dem ersten Abstand R1 der Materialbahn 2 zu der Drehachse der Welle 1 und dem zweiten Abstand R2 des Spannseils 3 zu der Drehachse der Welle 1 mit steigender Ausrolllänge L der Materialbahn 2 vergrößert. Ein entsprechender Zusammenhang ist in
Während
Folglich ist das über die Materialbahn 2 über die Welle 1 ausgeübte erste Drehmoment kleiner als das über die Spannseile 3 auf die Welle 1 ausgeübte zweite Drehmoment. Die skalaren Größen des ersten und des zweiten Drehmoments sind symbolisch mit unterschiedlich großen Pfeilen in
Bei der in
Das Bedienseil 11 bzw. das Bedienelement 11 muss nicht notwendigerweise manuell betätigt werden, sondern kann alternativ auch motorisch angetrieben werden.The operating
Aus den
In einer alternativen und in den Figuren nicht dargestellten Ausführungsform kann die erfindungsgemäße Vorrichtung zwei Umlenkeinrichtungen 22 aufweisen, mittels denen die Spannseile 3 bzw. die Zusatzspannseile 16 umgelenkt werden. Die Spannseile 3 können miteinander verbunden sein und/oder die Zusatzspannseile 16 können miteinander verbunden sein. Wenn die Spannseile 3 und/oder die Zusatzspannseile 16 elastisch sind, wird die für die Bewegung der Welle 1 bzw. der Zusatzwelle 15 notwendige Kraft durch die Spannseile 3 bzw. durch die Zusatzspannseile 16 selbst aufgebracht. Alternativ kann zwischen den Spannseilen 3 bzw. zwischen den Zusatzspannseilen 16 jeweils eine Kraftspeichervorrichtung 21 in Form einer Zugfeder angeordnet sein, mit der die Spannseile 3 bzw. die Zusatzspannseile 16 jeweils verbunden sind. Durch eine entsprechende Ausführungsform ist lediglich eine einzige Zugfeder pro Seite notwendig.In an alternative embodiment, not shown in the figures, the device according to the invention may comprise two
In einer weiteren und nicht dargestellten Ausführungsform umfasst die Vorrichtung zum Auf- und Abrollen einer Materialbahn 2 auf und von einer Welle 1, 15 mehrere Materialbahnen 2, die nebeneinander auf der Welle 1, 15 aufgerollt und von dieser abrollbar sind. Dabei kann das Bedienseil 11 zwischen den Materialbahnen 2 an der Welle 1, 15 befestigt sein.In a further and not shown embodiment, the device comprises for winding and unwinding of a
- 11
- Wellewave
- 22
- Materialbahnweb
- 33
- Spannseiltether
- 44
- zweites Befestigungsende (der Materialbahn)second attachment end (the material web)
- 55
- erstes Befestigungsende (der Materialbahn)first attachment end (the material web)
- 66
- Knotennode
- 77
- SpannseilfixierungTension cable fixation
- 88th
- Haltestruktur (für erstes Befestigungsende)Holding structure (for the first attachment end)
- 99
- SpannseilbefestigungseinrichtungTension cable fastening device
- 1010
- Randabschnitt (der Welle oder der Zusatzwelle)Edge section (of the shaft or the additional shaft)
- 1111
- Bedienelementoperating element
- 1212
- Aufrolllinie (des Spannseils)Roll-up line (of the tensioning rope)
- 1313
- WellenstirnseiteWave front side
- 1414
- Führungsrillen (für das Spannseil)Guide grooves (for the tensioning cable)
- 1515
- Zusatzwelleadditional shaft
- 1616
- ZusatzspannseilAdditional tension cable
- 1818
- BedienelementfixierungOperating element fixation
- 1919
- Randabschnitt (der Zusatzwelle)Edge section (the additional wave)
- 2020
- ZusatzbedienelementAdditional control element
- 2121
- KraftspeichervorrichtungPower storage device
- 2222
- Umlenkeinrichtung (für ein Spannseil)Deflection device (for a tensioning cable)
- 2626
- BedienelementumlenkungOperating element deflection
- FF
- Kraft (durch Spannseil oder Kraftspeichervorrichtung erzeugt)Force (generated by tensioning cable or power storage device)
- LL
- Ausrolllänge (der Materialbahn)Roll-out length (of the material web)
- RR
- radialer Abstandradial distance
- R1R1
- erster radialer Abstand (der Materialbahn zu der Drehachse)first radial distance (the material web to the axis of rotation)
- R2R2
- zweiter radialer Abstand (des Spannseils zu der Drehachse)second radial distance (of the tensioning cable to the axis of rotation)
Claims (15)
- Device for rolling up and unrolling a material web (2) onto and from a shaft (1, 15), the device further comprising two tensioning ropes (3, 16) and having the following features:- the material web (2) comprises a first fastening end (5), at which the material web (2) can be directly or indirectly fastened to a holding structure (8);- the material web (2) comprises a second fastening end (4) which is opposite the first fastening end (5) and which is fastened to the circumference of the shaft (1, 15) in such a way that the material web (2) can be rolled up and unrolled on a central portion of the shaft (1, 15) by rotating the shaft (1, 15) about an axis of rotation;- the shaft (1, 15) comprises a rim portion (10) in each of the two axial end regions thereof, a tensioning rope (3, 16) in each case being fastened to the respective circumferences of said rim portions, it being possible to roll up and unroll the tensioning ropes (3, 16) on the respective rim portions (10) by rotating the shaft (1, 15);- by rotating the shaft (1, 15) in an unrolling direction, making the shaft (1, 15) move away from the holding structure (8), the material web (2) is unrolled from the central portion of the shaft (1, 15) and the tensioning ropes (3, 16) are rolled up on the respective rim portions (10) of the shaft; and- by rotating the shaft (1, 15) in a roll-up direction, making the shaft (1, 15) move towards the holding structure (8), the material web (2) is rolled up onto the central portion of the shaft (1, 15) and the tensioning ropes (3, 16) are unrolled from the respective rim portions (10) of the shaft,characterised in that a first radial distance (R1) assigned to any given roll-out length (L) of the material web (2), between the material web (2) and the axis of rotation, differs from a second radial distance (R2) assigned to this roll-out length (L), between the tensioning rope (3, 16) and the axis of rotation, in such a way that a first torque exerted on the shaft (1, 15) via the material web (2) differs in direction and magnitude from a second torque exerted on the shaft (1, 15) via the tensioning ropes (3, 16), in such a way that the shaft (1, 15) is driven by a force (F) transmitted via the tensioning ropes (3, 16) as a result of the torque difference between the first torque and the second torque.
- Device according to claim 1, characterised in that the tensioning ropes (3, 16) are resilient and when tensioned exert a force directed away from the holding structure on the shaft (1, 15) in such a way that the shaft (1, 15) is driven by means of the force exerted by the tensioning ropes (3, 16).
- Device according to either of the preceding claims, characterised in that the device further comprises a force storage device (21), which is operatively connected to the tensioning ropes (3, 16) and exerts a force directed away from the holding structure on the tensioning ropes (3, 16), in such a way that the shaft (1, 15) is driven by means of the force exerted by the force storage device (21).
- Device according to any of the preceding claims, characterised in that the first distance (R1) assigned to any given roll-out length (L) of the material web (2), between the material web (2) and the axis of rotation, is greater than the second distance (R2) assigned to this roll-out length (L), between the tensioning rope (3, 16) and the axis of rotation, in such a way that the first torque exerted on the shaft (1, 15) via the material web (2) is greater than the second torque exerted on the shaft (1, 15) via the tensioning ropes (3, 16), in such a way that the shaft (1, 15) is driven away from the holding structure (8) by the force transmitted via the tensioning ropes (3, 16) as a result of the torque difference between the first torque and the second torque.
- Device according to any of claims 1 to 3, characterised in that the first distance (R1) assigned to any given roll-out length (L) of the material web (2), between the material web (2) and the axis of rotation, is smaller than the second distance (R2) assigned to this roll-out length (L), between the tensioning rope (3, 16) and the axis of rotation, in such a way that the first torque exerted on the shaft (1, 15) via the material web (2) is smaller than the second torque exerted on the shaft (1, 15) via the tensioning ropes (3, 16), in such a way that the shaft (1, 15) is driven towards the holding structure (8) by the force transmitted via the tensioning ropes (3, 16) as a result of the torque difference between the first torque and the second torque.
- Device according to any of the preceding claims, characterised in that the two rim portions (10) of the shaft (1, 15) are cylindrical.
- Device according to any of claims 1 to 5, characterised in that the two rim portions (10) of the shaft (1, 15) are formed conically along the respective axial extensions thereof, at least in part, and taper from a first diameter to a second diameter along the respective axial extensions thereof.
- Device according to claim 7, characterised in that when the shaft (1, 15) is rotated in the unrolling direction the respective tensioning rope (3, 16) is rolled up on the respective rim portions (10) of the shaft (1, 15) in the direction of the tapering of the rim portions (10).
- Device according to claim 8, characterised in that the difference between the first distance (R1), between the material web (2) and the axis of rotation, and the second distance (R2), between the tensioning rope (3, 16) and the axis of rotation, increases as the roll-out length (L) of the material web (2) increases, in such a way that the torque difference is substantially constant over the entire roll-out length (L) of the material web (2).
- Device according to claim 7, characterised in that when the shaft (1, 15) is rotated in the roll-up direction the respective tensioning ropes (3, 16) are unrolled from the respective rim portions (10) of the shaft (1, 15) in the direction of the widening of the rim portions (10).
- Device according to claim 10, characterised in that the difference between the second distance (R2), between the tensioning rope (3, 16) and the axis of rotation, and the first distance (R1), between the material web (2) and the axis of rotation, decreases as the roll-out length (L) of the material web (2) increases, in such a way that the torque difference is substantially constant over the entire roll-out length (L) of the material web (2).
- Device according to any of claims 3 to 11, characterised in that the force storage device (21) comprises two force storage means (21), which are each operatively connected to a tensioning rope (3, 16).
- Device according to claim 3 or any of claims 4 to 12 when dependent on claim 3, characterised in that the device further comprises a tensioning means, operatively connected to the tensioning ropes (3, 16) and/or to the force storage device (21), for tensioning the force storage device (21).
- Device according to any of the preceding claims, characterised in that the device further comprises an operating element (11, 20), which is connected to an end face (13) of the shaft (1, 15) in the region of the axis of rotation so as to be rotatable or is placed in free rotation on the shaft (1), and which is configured as an operating rope (11, 20), operating lever (11, 20) or operating chain (11, 20), and by means of which a force can be applied to the shaft (1, 15) by hand and/or by a motor.
- Device according to any of the preceding claims, characterised by the following features:- the device further comprises an additional shaft (1, 15), on the circumference of which the first fastening end (5) of the material web (2) is fastened, in such a way that the material web (2) can be rolled up and unrolled on a central portion of the additional shaft (1, 15) by rotating the additional shaft (1, 15) about an axis of rotation;- in each of the two axial end regions thereof, the additional shaft (1, 15) comprises a rim portion (10), on the respective circumference of which a respective additional tensioning rope (3, 16) is fastened, it being possible to roll up and unroll said additional tensioning ropes on the respective rim portions (10) by rotating the additional shaft (1, 15) and to fasten them to the holding structure (8);- rotating the additional shaft (1, 15) in an unrolling direction, making the additional shaft (1, 15) move towards the holding structure (8), causes the material web (2) to unroll from central portion of the additional shaft (1, 15) and the additional tensioning ropes (3, 16) to be rolled up on the respective rim portions (10) of the additional shaft (1, 15);- rotating the additional shaft (1, 15) in a roll-up direction, making the additional shaft (1, 15) move away from the holding structure (8), causes the material web (2) to roll up on the central portion of the additional shaft (1, 15) and the additional tensioning ropes (3, 16) to be unrolled from the respective rim portions (10) of the shaft;- a first radial distance (R1) assigned to any given roll-out length (L) of the material shaft (2), between the material web (2) and the axis of rotation, differs from a second radial distance (R2) assigned to this roll-out length (L), between the additional tensioning rope (3, 16) and the axis of rotation of the additional shaft (1, 15), in such a way that a first torque, exerted on the additional shaft (1, 15) via the material web (2), differs in direction and magnitude from a second torque, exerted on the additional shaft (1, 15) via the additional tensioning ropes (3, 16), in such a way that the additional shaft (1, 15) is driven by the force transmitted via the additional tensioning ropes (3, 16) as a result of the torque difference between the first torque and the second torque.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012003524.1A DE102012003524B4 (en) | 2012-02-24 | 2012-02-24 | Device for winding and unwinding a material web on and from a shaft |
PCT/EP2013/000512 WO2013124067A1 (en) | 2012-02-24 | 2013-02-21 | Device for rolling up and unrolling a material web onto and from a shaft |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2817471A1 EP2817471A1 (en) | 2014-12-31 |
EP2817471B1 true EP2817471B1 (en) | 2016-04-06 |
EP2817471B8 EP2817471B8 (en) | 2016-08-17 |
Family
ID=47754427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13706431.7A Active EP2817471B8 (en) | 2012-02-24 | 2013-02-21 | Device for rolling up and unrolling a material web onto and from a shaft |
Country Status (10)
Country | Link |
---|---|
US (1) | US9447633B2 (en) |
EP (1) | EP2817471B8 (en) |
JP (1) | JP6162727B2 (en) |
CN (1) | CN104136702B (en) |
AU (1) | AU2013224382B2 (en) |
CA (1) | CA2863560C (en) |
DE (1) | DE102012003524B4 (en) |
ES (1) | ES2574519T3 (en) |
RU (1) | RU2603607C2 (en) |
WO (1) | WO2013124067A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9126093B1 (en) * | 2013-02-07 | 2015-09-08 | Atlantic Recreation, Inc, ; | System for retractable tennis court shade device |
US9528313B1 (en) * | 2015-09-30 | 2016-12-27 | Nathan Dhilan Arimilli | Non-intrusive, adaptive tracking and shading device |
JP7175754B2 (en) * | 2018-12-27 | 2022-11-21 | 株式会社ニチベイ | BLIND |
KR102348742B1 (en) * | 2020-03-04 | 2022-01-07 | (주)플렉시고 | Rolling device for durability evaluation of flexible material and evaluation system |
US11142947B1 (en) * | 2021-05-11 | 2021-10-12 | Nanyang Kunyuan Intelligent Technology Co., Ltd. | Adjustable roller shades |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US262398A (en) * | 1882-08-08 | gxraed | ||
US238925A (en) * | 1881-03-15 | Curtain-fixture | ||
US862644A (en) * | 1906-08-03 | 1907-08-06 | Francis M Kepler | Screen. |
US1486678A (en) * | 1922-06-02 | 1924-03-11 | Edwin T Peters | Window shade |
US1486676A (en) * | 1923-04-16 | 1924-03-11 | Hans N Nilssen | Fishing vest |
DE681428C (en) * | 1938-02-24 | 1939-09-22 | Ewald Friederichs Fabrik Fuer | Engine for the roll-up and take-up device on roll-up curtains for blackout devices for air protection purposes |
JPS456691Y1 (en) * | 1967-01-17 | 1970-04-02 | ||
JPS4849140U (en) * | 1971-10-15 | 1973-06-27 | ||
JPS5140914Y2 (en) * | 1972-09-04 | 1976-10-06 | ||
DE4038419A1 (en) | 1989-12-02 | 1991-06-06 | Dieter Rau | Awning for conservatory or greenhouse - has motor enclosed in tubular shaft which supports shaft on which awning is wound |
SE466923B (en) * | 1990-09-28 | 1992-04-27 | Eriksson Jens Foersaeljning | RIDAAANORDNING |
JPH09328979A (en) | 1996-03-08 | 1997-12-22 | Hunter Douglas Internatl Nv | Beam control type shielding device for opening of building |
FR2787826B1 (en) * | 1998-12-29 | 2001-03-23 | Jean Moinet | DEVICE FOR IMMOBILIZING A SCREEN IN A LOW POSITION |
US6874559B1 (en) | 2003-10-07 | 2005-04-05 | Dometic Corporation | Enclosed roll awning |
CN2743518Y (en) | 2004-09-21 | 2005-11-30 | 王仲明 | Rolling coil curtain |
WO2009140711A1 (en) | 2007-01-03 | 2009-11-26 | Dazhi Huang | Motorized blind system |
FR2958224B1 (en) * | 2010-04-02 | 2014-04-25 | Acs France Sas | OCCULTATION STORAGE FOR A MOTOR VEHICLE HAVING A RELEASE TUBE HAVING TRUNCONIC PULLEYS. |
-
2012
- 2012-02-24 DE DE102012003524.1A patent/DE102012003524B4/en not_active Expired - Fee Related
-
2013
- 2013-02-21 WO PCT/EP2013/000512 patent/WO2013124067A1/en active Application Filing
- 2013-02-21 US US14/379,400 patent/US9447633B2/en active Active
- 2013-02-21 JP JP2014558036A patent/JP6162727B2/en active Active
- 2013-02-21 CA CA2863560A patent/CA2863560C/en active Active
- 2013-02-21 ES ES13706431.7T patent/ES2574519T3/en active Active
- 2013-02-21 CN CN201380010488.XA patent/CN104136702B/en active Active
- 2013-02-21 AU AU2013224382A patent/AU2013224382B2/en active Active
- 2013-02-21 EP EP13706431.7A patent/EP2817471B8/en active Active
- 2013-02-21 RU RU2014138511/12A patent/RU2603607C2/en active
Also Published As
Publication number | Publication date |
---|---|
RU2603607C2 (en) | 2016-11-27 |
AU2013224382B2 (en) | 2016-11-17 |
CA2863560C (en) | 2019-06-11 |
EP2817471A1 (en) | 2014-12-31 |
JP2015508134A (en) | 2015-03-16 |
JP6162727B2 (en) | 2017-07-12 |
DE102012003524A1 (en) | 2013-08-29 |
CN104136702A (en) | 2014-11-05 |
US20150034261A1 (en) | 2015-02-05 |
RU2014138511A (en) | 2016-04-20 |
WO2013124067A1 (en) | 2013-08-29 |
ES2574519T3 (en) | 2016-06-20 |
DE102012003524B4 (en) | 2015-07-16 |
EP2817471B8 (en) | 2016-08-17 |
CA2863560A1 (en) | 2013-08-29 |
US9447633B2 (en) | 2016-09-20 |
AU2013224382A1 (en) | 2014-08-28 |
CN104136702B (en) | 2016-03-30 |
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