• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a screen system for a glasshouse. The screen system according to the invention comprises at least two screen devices positioned one above the other, each screen device comprising at least one screen cloth, guide wires on the top and bottom of the screen cloth, and a screen profile arranged along an edge of the screen cloth. With the screen device according to the invention, with two adjacent screen devices positioned one above the other: the screen profiles are displaceable relative to each other along the guide wires; and the guide wires of the one screening device extending between the screens of the screening devices and the guide wires of the other screening device extending between the screens of the screening devices in the direction transverse to the direction of extension of the guide wires with respect to each other. In addition, each screen profile is provided near each guide wire extending between the screen cloths with a wire guide which couples at least one guide wire located nearby to the screen profile.
    公开号:BE1023634B1
    申请号:E2016/5733
    申请日:2016-10-03
    公开日:2017-05-24
    发明作者:Der Meer Allard Van
    申请人:Bom Holding B.V.；
    IPC主号:
    专利说明:

    Screen system for a department store
    The invention relates to an invention in the field of department store screen systems.
    A department store is used in horticulture for growing crops therein. A department store for horticulture generally comprises a frame of columns, trusses and gutters. The frame generally carries a hood with windows. Sunlight can fall through the windows of the hood on crops grown in the department store.
    Department stores are generally equipped with screen systems. These screen systems serve, depending on the crop, to regulate the amount of sunlight that falls on the crops through the windows of the hood, to regulate the emission of light from the department store through the windows into the environment, and / or to regulate the transfer of heat from the department store to the environment. Such screen systems include screen cloths that are movable between an opened state and a closed state. In known screen systems of the above-mentioned type, a screen cloth is positioned between guide wires which extend in two parallel planes on either side of the screen cloth. The guide wires located under the screen cloth form the so-called wire bed on which the screen cloth lies. The guide wires located above the screen cloth are called the wind-up wires. The screen cloth is connected along one edge with a part of the frame of a department store and connected along the opposite edge with a so-called screen profile. This screen profile extends between the wire bed and the wind-up wires, substantially transversely of the guide wires, and is coupled at the bottom with guide wires of the wire bed and at the top coupled with wind-up wires by means of so-called wire guides. The screen profile can be moved along the guide wires in the direction transverse to the direction of extension of the guide wires by means of so-called pull wires. These puller wires extend substantially parallel to the guide wires and are coupled to the screen profile, in particular by means of so-called slip blocks. The puller wires are driven by means of a drive. Alternatively, instead of puller wires, pull / push rods are provided with which the drive moves the screen profiles along the guide wires by pulling or pushing against the screen profiles depending on the desired direction of movement.
    By moving the screen profile from the part of the frame of the department store to which the screen cloth is connected, along the guide wires, the screen cloth is brought into the closed state. In the closed state, the screen fabric prevents sunlight falling through the windows from reaching the crops grown in the department store, light from under the screen fabric radiating out through the windows, and / or heat exchange between the spaces on either side of the screen. screen cloth. By subsequently moving the screen profile to the part of the frame of the department store to which the screen cloth is connected, along the guide wires, the screen cloth is brought into the opened state. In the opened state, the screen no longer prevents sunlight coming through the windows from reaching the crops grown in the greenhouse, that light from under the screen is radiating out through the windows, and / or that heat exchange takes place between the spaces on either side of the screen.
    The present invention has for its object, inter alia, to improve the known screen systems of the aforementioned kind.
    The screen system according to the invention comprises at least two screen devices. In the screen system, each screen device comprises at least one screen cloth; at the top and bottom of the screen cloth guide wires which extend in respective, substantially parallel planes; and a screen profile arranged along an edge of the screen cloth which is provided with wire guides for guiding the screen profile along the guide wires during the displacement of the screen profile along the guide wires in order to move the screen cloth arranged thereon between the open state and a closed state.
    In the screen system according to the invention, the screen devices are positioned one above the other, with in each case two adjacent screen devices positioned above each other, the screen profiles can be moved relative to each other along the guide wires, so that one of the screen cloths can be brought into the closed state while the other can be brought to the opened state.
    Also, in the case of two adjacent screen devices positioned above each other, the guide wires of the one screen device extending between the screen cloths of the screen devices and the guide wires of the other screen device extending between the screen cloths of the screen devices in the direction transverse to the direction of extension of the guide wires offset from each other, and each screen profile near each guide wire extending between the screen cloths is provided with a wire guide which couples at least one guide wire located nearby with the screen profile.
    This screen system according to the invention offers a multiple screen system, i.e. a screen system with at least two screen cloths positioned one above the other. By using two separate screen profiles to be displaced relative to each other along the guide wires, at least three states of the screen cloths are possible with the screen system according to the invention. In a first state, both screens are in an open state. In a second state, one of the two screen covers is in the closed state and the other screen cover is in the open state. In the third state, both screens are in the closed state. These three states allow for three levels of light transmission, which gives the grower more options to adapt the screen system to the specific light conditions relative to a screen system with a single screen cloth. In embodiments where for both screen screens of two adjacent screen devices it holds that the screen screen in question can be brought into the open state while the other screen screen is in the closed state, when screen screens of different composition are used, even four states can be realized.
    In addition, in the screen system according to the invention, thanks to the measure, the guide wires which extend between the screens of the screen devices of one screen device and the guide wires which extend between the screens of the screen devices of the other screen device, in the direction transverse to the The direction of extension of the guide wires are shifted to partially nest the two screen devices into each other. This permits a particularly small distance between the screen cloths of the adjacent screen devices. This has the advantage that with the adjacent screen devices positioned one above the other in the third state in which the two screen cloths are in the closed state, a cavity can be formed between the screen cloths which effectively insulates thermally. In particular, this cavity is effectively thermally insulating because, due to the particularly small distance between the screen cloths, movement of the air between the screen cloths is effectively avoided. By a smaller movement of the air between the screen cloths or even stationary air between the screen cloths, the heat exchange between the screen cloths is effectively reduced by means of convection.
    The screen system according to the invention thus offers the favorable possibility of different levels of light transmission through the use of screen cloths which can be brought into different states by means of separate screen profiles, and the screen system according to the invention also offers the favorable possibility of a particularly effective thermally insulating cavity. by applying guide wires that have been moved. This favorable combination is possible in the screen system according to the invention in that both screen profiles are provided with a wire guide near each guide wire which extends between the screen cloths. Without this measure, the use of offset guide wires in the screen system according to the invention causes the unwanted effect of reducing the distance between two adjacent screen devices positioned one above the other. This undesired effect means that when the screen profile of one of the screen devices is moved from the closed state to its open state, the screen cloth applied thereto ends up between the screen profile and a guide wire of the other screen device. This leads, among other things, to unwanted wear of the screen cloth. This undesired effect occurs with the offset guide wires of the screen devices because, as the distances between the screen devices decrease, the contact between the screen cloth of one screen device and the guide wires of the other screen device increases. This contact leads when the screen profile of one of the screen devices is moved from the closed state to its open state due to a combination of friction between the screen cloth and the guide wires of the other screen device and the lack of a coupling between the screen profile and the guide wires of the other screen device to the undesired effect of touching the screen cloth between the screen profile and the guide wires of the other screen device. By providing each screen profile near each guide wire extending between the screen cloths with a wire guide which couples the screen profile to at least one guide wire located nearby, it is effective to prevent a screen cloth from moving between a closed screen and the opened state between the screen profile arranged thereon and a guide wire of the other screen device ends up. The wire conductor in question functions as a cloth carrier with the associated guide wire or wires, i.e. both with the adjacent guide wire or wires coupled thereto and with the adjacent guide wire or wires not coupled thereto. Upon displacement of the screen profile in order to bring the screen cloth from the closed state to the open state, the wire guide comes to the guidewire or wires with which it is coupled into contact with the screen cloth to which the screen profile is arranged so as to take the screen cloth with it with the screen profile and to prevent the screen cloth from falling between the guidewire or wires coupled thereto and the screen profile. The wire guide also takes along the part of the screen cloth that comes into contact with guide wires located near the wire guide to which the wire guide is not coupled, so that the screen cloth is effectively prevented from falling between the screen profile and the guide wire or wires that do not the wire conductor concerned is / are coupled, but is located near the respective wire conductor.
    Preferably, the distance between the planes in which the guide wires lying between the screen cloths extend is less than or equal to 12 cm, preferably less than or equal to 6 cm. In a preferred embodiment of the screen system according to the invention, the guide wires which extend between the screen cloths of the screen devices, however, extend substantially in a divided plane. This measure makes the smallest distance between the screens possible.
    In a favorable embodiment thereof, two guide wires of the guide wires extending between the screen cloths of the screen devices in the direction of the respective plane in which the guide wires extend are positioned adjacent to each other and the one screen profile is coupled to the one by means of a first wire guide guide wire and the other screen profile coupled to the other guide wire by means of a second wire guide. This embodiment is particularly favorable because in this embodiment it is possible for the screen profiles of the adjacent screen device to pass each other when the screen devices are moved between the closed and the open condition. In this embodiment, the center-to-center distance between the guide wires positioned close to each other in the plane in which the guide wires extend transversely to the direction of extension of the guide wires is preferably in the range of 1 to 10 cm, more preferably in the range of 3 to and with 5 cm.
    In a preferred embodiment of the screen system according to the invention, the distance between the plane in which the lower guide wires of the upper screen device extend and the plane in which the lower guide wires of the lower screen device extend is in the range of 4 to 10 cm. The screen cloths rest on the lower guide wires of the relevant screen device.
    The distance between the plane in which the lower guide wires of the upper screen device extend and the plane in which the lower guide wires of the lower screen device extend define the thickness of the cavity between the screen cloths when the screen cloths of two adjacent screen devices positioned one above the other are in the closed state. A cavity thickness in the range of 5 to 10 cm provides good thermal insulation. The above-mentioned distance and thus the cavity thickness are preferably in the range of 5 to 7 cm. More preferably, the above-mentioned distance and hence the cavity thickness is substantially 6 cm. With the mentioned cavity thicknesses, effective movement of the air between the screen cloths and thus heat exchange through convection can be effectively avoided.
    In a favorable embodiment of the screen system according to the invention, the screen devices are positioned between two spaced parts of a frame of a department store and the screen cloth of the one screen device is along its edge opposite the edge to which the screen profile is arranged, with one part is connected, and the screen of the other screen device is connected to the other part along the edge thereof opposite the edge to which the screen profile is arranged. The two spaced apart parts of a frame of a department store are, for example, two trusses, two beams, or two troughs of the frame of a department store. In this embodiment, it is advantageously possible to bring both screen devices into a position between the open and the closed condition, wherein the screen cloths do not or do not overlap each other. In this position, the screen cloths together screen the space between the two trusses at least substantially for light, while a ventilation opening is formed between the screen cloths which connects the spaces below and above the screen device. An additional ventilation option is thus added with respect to a screen system with a single screen cloth. In this embodiment, the screen profiles of adjacent screen devices must be able to pass each other in order to be able to simultaneously bring both screen cloths into the open state and to simultaneously bring them into the closed state. Although in a preferred embodiment for each screen device one screen cloth is positioned between the two spaced apart parts of the frame of the department store, it is alternatively possible that for at least one of the screen devices a plurality of screen cloths, for example two, between the two spaced parts of the frame of the department store are positioned.
    In a favorable alternative embodiment, the screen devices are positioned between two spaced parts of a frame of a department store and the screen cloths of both screen devices are connected along the edge thereof opposite the edge to which the screen profile is arranged with the same part. The two spaced apart parts of a frame of a department store are, for example, two trusses, two beams, or two troughs of the frame of a department store. Although this alternative embodiment does not offer the ventilation option of the above-described embodiment, it does, on the other hand, offer a smaller screen package when both screens are brought into the closed state. With this alternative embodiment it is possible by means of the above-described measures to cause the screen profiles to pass each other so that both screen cloths can be brought into the open and the closed condition independently of each other. Alternatively, it is possible to couple each screen profile with each guide wire that extends between two screens of adjacent screen devices by means of a wire guide. This makes it possible to reduce the number of guide wires extending between two screens of adjacent screen devices since the screen profiles can share each guide wire. This last-mentioned alternative possibility is particularly advantageously applicable in combination with the measure that the guide wires which extend between two screens of adjacent screen devices extend in a divided plane.
    In an alternative embodiment of the display system according to the invention, the display devices are positioned between two spaced apart parts of a frame of a department store; the screen profile of a first of the screen devices extends on either side of the guide wires extending between the two screen cloths; and the screen of the first screen device is connected to a first of the two parts of the frame along the edge of the screen cloth opposite the edge to which the screen profile is arranged. The screen profile of the second screen device is thereby positioned between the first part of the frame and the screen profile of the first screen device; and the screen cloth of the second screen device is arranged along an edge thereof on the screen profile of the second screen device and along an opposite edge arranged on the screen profile of the first screen system.
    The screen profile herein extends on either side of the guide wires extending between the two screen cloths, preferably two parts, a first part on the top side and a second part on the bottom side of the guide wires which extend between the screen cloths, which parts at least near each guide wire extending between the screen cloths are mutually connected by means of connecting elements. These connecting elements form wire guides. The connecting elements and the two parts can be separate, mutually connectable parts. Alternatively, at least the connecting elements and one of the two parts form one whole.
    In an alternative embodiment of the screen system according to the invention, wherein a screen profile extends on either side of the guide wires extending between the two screen cloths, the relevant screen profile of the first screen system comprises a one-piece body provided with holes which serve as wire guide through which the guide wires extend which extend between the screen cloths.
    In a preferred embodiment of the screen system according to the invention, each screen device is provided with a drive device. Preferably, the drive device of a screen device comprises a pull wire or pull / push member running substantially parallel to the guide wires, such as a pull / push rod or tube, which is coupled to the screen profile of the screen device by means of a coupling member. The pull wires or pull / push members and coupling members coupled thereto are preferably positioned on the sides facing away from two adjacent screen devices positioned above each other.
    In a favorable embodiment of the screen system according to the invention, the screen carriers for the guide wires which extend between the screen screens of adjacent screen devices positioned above one another have an end remote from the screen profile provided with these screen drivers which has a rounded shape. This measure makes it possible to prevent the cloth carriers engaging the screen cloth of the other screening device when the screen profile provided with the relevant cloth carriers is moved and to take it with it and possibly damage it.
    Although the screen system according to the invention already offers advantages as described above when two screen devices are positioned above each other, it is also possible to position more than two screen devices above each other, for example three, four, or five. Additional levels of light transmission can thus be achieved and / or additional thermally insulating cavities.
    The present invention also relates to a department store provided with a screen system according to the invention as described above.
    The greenhouse according to the invention preferably comprises a frame, wherein the screen devices of the screen system are arranged between two spaced apart parts of the frame. These parts preferably run parallel to each other, the guide wires extending substantially transversely of the direction of extension of the parts. The two parts are, for example, two trusses, two beams, or two gutters of the frame of a department store.
    The present invention will be explained in more detail below with reference to exemplary embodiments, which are shown in the accompanying drawing. These are non-limitative exemplary embodiments. In the views, the same or comparable parts, components and elements are indicated with the same reference numbers. In the figures: - figure 1 shows a perspective view of a part of a department store according to the invention with a screen system according to the invention therein; - figures 2 to 4 in side view, front view and perspective view, respectively, details of an embodiment of the screen system according to the invention of figure i; - figures 5A and 5B show a detail of the screen system according to the invention from figures 2 to 4 in side view to illustrate the operation of the screen system according to the invention; figures 6A and 6B show in side view a detail of a screen system that is not designed according to the invention to illustrate the undesired effect that occurs if the measures according to the invention are not applied; figure 6C shows in side view a detail of the screen system according to the invention of figures 2 to 4 to illustrate the operation of the screen system according to the invention; - figures 7A to 7D show in side view the screen system according to the invention of figures 2 to 4 to illustrate the operation of the screen system according to the invention; figure 8 shows in side view an alternative embodiment of the screen system according to the invention of figures 2 to 4; - figures 9A and 9B show a detail of the screen system according to the invention in the embodiment of figures 2 to 4 in side view; figures 10A and 10B show a detail of the screen system according to the invention in the embodiment of figure 8 in side view; figures 11 and 12 in front view and perspective view, respectively, details of a further alternative embodiment of the screen system according to the invention of figures 2 to 4; figure 13 shows a side view of a further alternative embodiment of the screen system according to the invention of figures 2 to 4; figure 14 shows in side view an alternative embodiment of the screen system as shown in figure 2.
    Figure 1 shows a greenhouse 1 according to the invention as it is used in horticulture for growing crops 2. The greenhouse 1 has a frame 3 of columns 5, trusses 7 and troughs 9. The frame 3 carries a diagrammatically shown hood 11 with windows in it. Shown in Figure 1 are two rows of columns 5, in which two columns of each row are connected to a truss 7, in particular a lattice truss, which extends transversely to the respective rows. Figure 1 shows only a part of the department store. In particular, one so-called span is shown which is formed by the row of two columns connected by a truss. Two so-called sections of this span are shown, one section being formed by two successive assemblies of columns connected by means of a truss. A department store generally comprises a plurality of spans and a plurality of sections, so that the department store 1 can extend further in the directions of arrows A, B, C, and D. The sides of a department store are generally closed by means of a facade, for example of glass.
    The department store 1 is provided with a screen system 15. The screen system 15 comprises between adjacent two trusses 7 two adjacent screen devices 17, 19 positioned above each other. Both screen devices 17, 19 each comprise a screen cloth 21, 23.
    Each screen 21, 23 extends in the length direction C, D over a plurality of spans and is movable in width direction A, B between an opened state and a closed state. The screen cloths 21, 23 are supported by guide wires 25, 27, 29, 31 which extend at the level of the trusses 7 transversely to the direction of extension of the trusses 7, parallel to the troughs 9. The screen cloths 21, 23 are each along one longitudinal edge 21a, 23a connected to a respective screen profile 33, 35, and along the opposite longitudinal edge 21b, 23b with a frame 7. By moving the screen profiles 33, 35 of the frame 7b with which the screen cloth is connected along the guide wires transversely to the direction of extension. of the trusses 7 in the direction of arrow B, the screen cloths 21, 23 are brought into the closed state in which the screen cloths 21, 23 prevent sunlight falling through the windows during the day from reaching crops 2 grown in the greenhouse 1 at night prevent screen cloths 21, 23 in the closed state that light from the department store 1 radiates through the windows to the environment of the department store 1. Also, in the closed state thereof, the screen cloths 21, 23 prevent heat exchange between the environment of the department store 1 and the interior of the department store 1. Through the screen profiles 33, 35 to the trusses 7b with which the screen cloths 21, 23 are connected to move along the guide wires 25 transversely of the direction of extension of the trusses 7 in the direction of arrow A, the screen cloths 21, 23 are brought into the open state in which the screen cloths 21, 23 no longer prevent sunlight from passing through the windows 13 crops grown in the department store 1 are achieved, that light enters the environment from the department store 1, and that heat exchange takes place between the interior of the department store 1 and the environment of the department store 1. In figure 1, the screen cloths 21 are located. halfway between the opened and the closed state and the screen cloths 23 are further towards the closed state.
    Although in figure 1 the frame 3 of the department store 1 is shown with two rows of columns 5, in which two columns of each row are connected to a truss 7, in each case two columns of each row can be connected by means of a beam instead of from a frame.
    Although in Figure 1 the guide wires extend transversely to the trusses 7 and the screen profiles extend parallel to the trusses 7, it is also possible to install the screen devices such that the guide wires extend parallel to the trusses 7 and the screen profiles transverse to the frames 7 expired.
    Figures 2, 3 and 4 schematically show the screen system 15 according to the invention. It has been shown that the screen system 15 comprises two adjacent screen devices 17, 19 positioned above each other and extending between two frames 7a, 7b. The upper screen device 17 comprises the screen cloth 21, the guide wires 25, 27, and the screen profile 33. The screen cloth 21 is connected along the longitudinal edge 21a with the screen profile 33, and along the opposite longitudinal edge 21b with the truss 7a. The lower guide wires 25 extend below the screen cloth 21 and the screen profile 33 in a first plane A, indicated by a dashed line, which extends transversely to the plane of the drawing. The upper guide wires 27 extend above the screen cloth 21 and the screen profile 33 in a second plane B indicated by a dashed line which extends transversely to the plane of the drawing and extends parallel to plane A. The screen profile 33 is with each lower guide wire 25 coupled by means of wire guides 37 in the form of clips that are clicked on the lower edge of the screen profile 33 and which each grip a guide wire 25. The screen profile 33 is coupled to each upper guide wire 27 by means of wire guides 39 in the form of clips that are clicked on the upper edge of the screen profile 33 and which each grip a guide wire 27. It is also shown that the upper screen device 17 is provided with a pull wire 41 which is positioned above the upper screen profile 33 and runs parallel to the guide wires 25, 27. The pull wire 41 is coupled to the screen profile 33 by means of a so-called slip block 43. The The puller wire 41 is connected to a motor (not shown) with which the puller wire 41 can be moved in the longitudinal direction thereof in order to move the screen profile 33 along the guide wires 25, 27.
    The lower screen device 19 comprises the screen cloth 23, the guide wires 29, 31, and the screen profile 35. The screen cloth 23 is connected along the longitudinal edge 23a with the screen profile 35, and along the opposite longitudinal edge 23b with the truss 7b. Along the longitudinal edge 23b, the screen cloth 23 is connected to the truss 7a by means of a U-profile beam 24 arranged on the truss 7a and extending in the longitudinal direction of the truss 7a. The lower guide wires 29 extend below the screen cloth 23 and the screen profile 35 in a first plane C, indicated by a dashed line, which extends transversely to the plane of the drawing. The upper guide wires 31 extend above the screen cloth 23 and the screen profile 35 in the plane A. The screen profile 35 is coupled to each lower guide wire 29 by means of wire guides 45 in the form of clips that are clicked on the lower edge of the screen profile 35 and each engaging a guidewire 29. The screen profile 35 is coupled to each upper guide wire 31 by means of wire guide wire guides 47 in the form of clips that are clicked on the upper edge of the screen profile 35 and which each grip a guide wire 31. It is also shown that the lower screen device 19 is provided with a pull wire 49 which is positioned under the lower screen profile 35 and runs parallel to the guide wires 29, 31. The pull wire 49 is coupled to the screen profile 35 by means of a so-called slip block 51. The The puller wire 49 is connected to a motor (not shown) with which the puller wire 49 can be moved in the longitudinal direction thereof in order to move the screen profile 35 along the guide wires 29, 31.
    As shown, the lower guide wires 25 of the upper shield device 17 and the upper guide wires 31 of the lower shield device 19 extend in a divided plane A. To this end, the lower guide wires 25 of the upper shield device 17 and the upper guide wires 31 of the lower shield device 19 are offset relative to each other in the direction transverse to the direction of extension of the guide wires over a center-to-center distance a. version shown example 5 cm. Thanks to this resistance of the lower guide wires 25 of the upper screen device 17 and the upper guide wires 31 of the lower screen device 19, the upper screen device 17 and the lower screen device 19 are nested together, so that the distance c between the screen cloths 21, 23 when resting on the lower guide wires 25, 29 of the respective screening device 17, 19 is particularly small. In the exemplary embodiment shown, this distance is c 6 cm. In the embodiment shown, two guide wires 27 and 29 are in each case on one vertical line and the guide wires 25 and 31 are offset in an direction transverse to this line with respect to this line over an equal distance e, for example 2.5 cm. Alternatively, the guide wires 25 and 31 are positioned at a different position in the plane A so that they have a different position with respect to the vertical line on which the guide wires 27 and 29 lie. It is also possible that the guide wires 27 and 29 do not lie on one vertical line.
    With the screen system 15 shown, the puller wires 41, 49 can be driven separately, so that the screen profiles 33, 35 can be moved relative to each other. Because each guide wire 25, 27, 29, 31 is coupled to only one of the screen profiles 33, 35, the screen profiles 33, 35 can move along each other. The screen devices 17 and 19 can thus be operated independently of each other and the screen cloths 21, 23 can be moved independently of each other between the opened and the closed condition.
    As shown in Figs. 3 and 4, of the guide wires 25, 31, which extend between the screen cloths 21, 23, two guide wires are placed near each other. In particular, each time a lower guide wire 25 of the upper screen device 17 and an upper guide wire 31 of the lower screen device 19 are placed close to each other at the distance a forming the resistance. Thus, the coupling member 37 with which the screen profile 33 of the upper screen device 17 is positioned. is coupled to the guide wire 25, positioned near the guide wire 31 with which the screen profile 33 is not coupled by means of a wire guide. Also, the wire guide 47, with which the screen profile 35 of the underlying screen device 19 is coupled to the guide wire 31, is positioned near the guide wire 25 with which the screen profile 33 is not coupled by means of a wire guide. With reference to figures 5A, 5B, 6A and 6B, it is explained what beneficial effect this embodiment has.
    In figures 5A and 5B, the displacement of screen profile 33 along the guide wires 25, 27 is shown when the screen cloth 21 is displaced in the direction of arrow E, towards its opened state. Screen cloth 21 rests on guide wire 25. Due to friction between the screen cloth 21 and the guide wire 25, the screen cloth 21 remains stuck on the guide wire 25 when the screen profile 33 is displaced in the direction of arrow E. However, as shown in Figure 5B, the wire guide 37 functions as a screen carrier that carries the screen cloth 21 in the direction of the arrow E despite the friction between the screen cloth 21 and the guide wire 25. Thus, the wire guide 37 serves not only as a coupling between the screen profile 33 and the guide wire 25, but also as a cloth carrier for the guide wire 25.
    As shown in Figures 6A and 6B, the screen cloth 21 rests not only on guide wire 25 but also on guide wire 31 of the underlying screening device 19. As described above, screen profile 33 is not coupled to guide wire 31 by means of a wire guide. When the screen cloth 21 is moved in the direction of the arrow E, towards its open condition, the screen cloth 21, due to friction between the screen cloth 21 and the guide wire 31, tends to stick to the guide wire 31 and as shown in Fig. 6B between touching the screen profile 33 and the guide wire 31. This is undesirable. However, this undesired effect is avoided in the screen system 15 as shown in Figs. 1 to 4 in that the wire guide 37 is positioned near guide wire 31. Because, as shown in Figs. 5A and 5B, near guide wire 25 and thus near guide wire 31, wire guide 37 carries screen cloth 21, the screen cloth 21 is also taken along with guide wire 31 in the direction of arrow E despite the absence of a wire-taking wire guide. Because the wire guide 37 is positioned both near guide wire 25 and near guide wire 31, the wire guide 37 functions as a cloth carrier for guide wire 25 and as a cloth carrier for guide wire 31. Thus, in the screen system 15 according to the invention, the situation of figure 6B does not occur but that of figure 6B 6C showing behind guide wire 31 wire guide 37 which is positioned near guide wire 31 and functions as a cloth carrier for guide wire 31. The same favorable effect has wire guide 47 when moving screen profile 35 of the lower screen device 19 in the direction of arrow E when moving the screen. screen 23 towards its opened state. During this displacement, in particular in the vicinity of the opened state, by bringing the screen cloth 23 together with the truss 7b, the screen cloth 23 tends to come into contact with guide wire 25 to which screen profile 35 is not coupled by means of a wire guide 47. Due to friction between the screen cloth 23 and the guide wire 25, the screen cloth 23 then tends to stick to the guide wire 25 and to end up between the guide wire 25 and the screen profile 35. Because the wire guide 47 is positioned both near guide wire 31 and near guide wire 25, the wire guide 47 functions as a cloth carrier for guide wire 31 and as a cloth carrier for guide wire 25, so that the screen cloth 23 is prevented from falling between the guide wire 25 and the screen profile 35. In the embodiment shown in Figs. 3 and 4, each screen profile has 33, 35 a wire guide 37, 47 serving as a cloth carrier, with each yellow The thread 25, 31 extends between the screen cloths 21, 23.
    Figures 7A to 7D show four states in which the screen system 15 of Figures 1 to 6 can be brought.
    In Figure 7A, both screen cloths 21, 23 are in the closed state. In this state of the screen system, a thermally insulating cavity S is formed between the screen cloths 21, 23.
    In Figure 7B, the screen cloth 21 of the upper screen device 17 is in the open state and the screen cloth 23 of the lower screen device is in the closed state.
    In Figure 7C, the screen cloth 21 of the upper screen device 17 is in the closed state and the screen cloth 23 of the lower screen device is in the open state.
    In Figure 7D, the screen cloth 21 of the upper screen device 17 is in the opened state and the screen cloth 23 of the lower screen device is in the open state.
    The states shown in Figs. 7B and 7C result in a different level of light transmission if the screen cloths 21 and 23 are of different composition. The states shown in figures 7B and 7C are both only possible because the screen profiles 33 and 35 can pass each other in the embodiment of the screen system according to the invention of figures 1 to 6.
    Figure 8 shows a further alternative embodiment of the embodiment of Figures 2 to 4. In this embodiment, the screen cloth 21 of the upper screen device 17 is along its edge 21b opposite the edge 21a to which the screen profile 33 is arranged on the one truss 7a is arranged, and the screen 23 of the underlying screening device 19 is arranged along the edge 23b thereof opposite the edge 23a to which the screen profile 35 is arranged on the other truss 7b. Along the longitudinal edge 23b, the screen cloth 23 is connected to the truss 7b by means of a U-profile beam 24 arranged on the truss 7b and extending in the longitudinal direction of the truss 7b. In this embodiment, the screen profiles 33 and 35 are thus moved in the opposite direction in order to bring both screen cloths 21, 23 into the open state or to bring both screen cloths 21, 23 into the closed state. In this embodiment, the configuration of the guide wires 25, 27, 29, 31, and wire guide wire guides 37, 47 as shown in Fig. 3. As shown in Fig. 8, a position of the screen profiles 33, 35 is possible in this embodiment, wherein the screen cloths 21, 23 together close the space between the trusses 7a, 7b, except for a ventilation opening 57 formed therebetween, through which rising hot air L can leave the space under the screens 21, 23. This embodiment also provides ventilation openings 59, 61 at the trusses 7a, 7b as shown in Figure 8.
    In Figs. 9A and 9B, the embodiment of the screen system as shown in Figs. 2 to 4 with the screen cloths in the open state thereof, with the screen cloths abutting against the truss 7, in the case of sunlight Z is in two directions. It is illustrated by means of figures 9A and 9B that the screen and the screen profile of the lower screen device 19 are partially in the shadow of the screen screen and the screen profile of the upper screen device 17. As a result, the sunlight Z is intercepted surface of the screen installation with the screens in their opened condition are smaller than in a screen system with two superimposed screen devices that are further apart and in which the screen and the screen profile of the lower screen device 19 are not in the shadow of the screen and the screen profile of the upper screen device 17 at the incidence directions of the sunlight shown Z.
    In Figs. 10A and 10B, the embodiment of the screen system as shown in Fig. 8 with the screen cloths in its open state, with the screen cloths abutting against the truss 7, in the case of sunlight Z is in two directions. It is illustrated by means of Figs. 10A and 10B that, in particular in the incident direction of sunlight Z shown in Fig. 10B, the screen cloth and the screen profile of the underlying screen device 19 are partially in the shadow of the screen cloth and the screen profile of the upper screen device 17 As a result, the sunlight Z intercepting surface of the screen installation with the screen fabrics in its open condition is smaller than in a screen system with two screen devices located one above the other and further apart and in which the screen fabric and screen profile of the lower screen device 19 are not in the shadow of the screen and screen profile of the above screen device 17 in the direction of incidence of the sunlight Z shown in figure 1 OB.
    Although in particular the embodiment as shown in figures 9A and 9B is favorable with regard to the sunlight Z intercepting surface of the screen installation, it holds that both for the embodiment as shown in figures 9A and 9B and for the exemplary embodiment shown in figures 10A and 10B, is a favorable effect with regard to the sunlight Z intercepting surface of the screen installation relative to a screen system with two superimposed screen devices that are further apart.
    Figures 11 and 12 show an alternative embodiment of the screen system according to the invention as shown in Figures 2 to 4. In the embodiment shown in Figures 11 and 12 both screen profiles 33, 35 are coupled by means of wire guides 37, 47 with each guide wire 25 extending between the screen cloths 21, 23. As a result, the guide wires 31 can be omitted. However, in this embodiment, the screen profiles 33 and 35 cannot pass each other. Thus, not both states of Figures 7B and 7C are possible. In the embodiment shown, only the state of Figure 7B is possible and not the state of Figure 7C.
    Fig. 13 shows an alternative embodiment of the embodiments shown in Fig. 9. In the exemplary embodiment shown in Fig. 13, the screen cloth 21 of the upper screen device 17 is not arranged on the truss 7a, but on screen profile 35 of the lower screen device 19. To that end the screen profile 35 of the lower screen device 19 extends from the lower guide wires 29 thereof to the upper guide wires 27 of the upper screen device 17. The screen profile 35 is made up of two parts 35a, 35b. The first part 35a extends at the top of the guide wires 25, 31 which extend between the screen cloths 21, 23. The second part 35b extends on the underside of the guide wires 25, 31 which extend between the screen cloths 21, 23. These two parts 35a, 35b are interconnected at least near each guide wire 25, 31 extending between the screen cloths 21, 23 by means of connecting elements 63. These connecting elements 63 form wire guides for the guide wires 25, 31 which extend between the screen cloths 21 , 23 and also serve as screen carriers to prevent that, when the screen profile 35 is displaced in the direction of the arrow E, screen screen 21 or screen screen 23 end up between one of the parts 35a, 35b and the guide wires 25, 31. Screen profile 35 is additionally coupled along its upper edge to each guide wire 27 by means of wire guides 47 which are designed as a clip that are clicked onto the upper edge of the screen profile 35. Screen profile 35 is coupled along its lower edge with each guide wire 29 by means of wire guides 45 which are designed as a clip that are clicked onto the lower edge of the screen profile 35. The wire guides 45 and 47 serve not only as a coupling but also as a cloth carrier for the respective guidewire to which they are coupled. Screen profile 33 is coupled along its upper edge to each guide wire 27 by means of wire guides 39 which are designed as a clip that are clicked onto the upper edge of the screen profile 33. Screen profile 33 is coupled along its lower edge with each guide wire 25 and 31 by means of wire guides 37 which are designed as a clip that are clicked onto the lower edge of the screen profile 33. The wire guides 37 and 39 serve not only as a coupling but also as a cloth carrier for the respective guidewire to which they are coupled.
    Figure 14 shows an alternative embodiment of the embodiments shown in Figure 8. This embodiment corresponds to the embodiment of Figure 8, although the U-profile bars 24 are missing. In the embodiment shown in Figure 14, hooks 63 are hooked to the trusses 7a and 7b. These hooks are provided with two hook eyes 63a and 63b.
    A support thread 65, 67 extends through each of these hook eyes 63a and 63b. The support wires 65, 67 extend in the longitudinal direction of the trusses 7a, 7b, transversely of the plane of the drawing. The guide wires 25 and 31 are supported by the upper support wire 65. The guide wires 29 are supported by the lower support wire 67. Along the longitudinal edge 23b, the screen cloth 23 is attached to the support wires 65, 67 and thus connected to the truss 7b via the hook 63 .
    In the figures pull wires are provided for moving the screen profiles along the guide wires. Alternatively, instead of pull wires, pull / push members, such as pull / push rods or tubes, may be provided.
    In the figures, each of the screen devices positioned one above the other is shown with one cloth positioned between two trusses. Alternatively, it is possible that a screen device has more than one screen cloth between two trusses. For example, in the embodiment as shown in Figure 2, it is possible that the upper screen device 17 and the lower screen device 19 are each provided with two screen cloths and two screen profiles, wherein one screen cloth is connected to truss 7a along a longitudinal edge and one screen cloth along a is connected to the longitudinal edge with truss 7b and the screen profiles arranged on these screen cloths are moved towards each other to bring the screen cloths into the closed state and are moved away from each other to bring the screen cloths into the open state.
    The present invention is not limited to the exemplary embodiments described above. The rights sought are defined by the following claims, within the scope of which many modifications can be envisaged.
    权利要求:
    Claims (18)
    [1]
    Conclusions
    A screen system for a department store, comprising at least two screen devices, wherein each screen device comprises: - at least one screen cloth; guide wires on top and bottom of the screen cloth which extend in respective, substantially parallel planes; - a screen profile arranged along an edge of the screen cloth which is provided with wire guides for guiding the screen profile along the guide wires during the displacement of the screen profile along the guide wires in order to move the screen cloth arranged thereon between the open state and a closed state; wherein - the screen devices are positioned one above the other; and wherein in the case of two adjacent screen devices positioned one above the other: - the screen profiles are movable relative to each other along the guide wires, so that one of the screen cloths can be brought into the closed state while the other screen cloth can be brought into the opened state; - the guide wires of the one screening device extending between the screens of the screening devices and the guide wires of the other screening device extending between the screens of the screening devices are offset relative to each other in the direction transversely to the direction of extension of the guide wires; - each screen profile near each guide wire that extends between the screen cloths is provided with a wire guide which couples at least one guide wire located nearby with the screen profile.
    [2]
    Screening system as claimed in claim 1, wherein - the distance between the surfaces in which the guide wires lying between the screen cloths extend is less than or equal to 12 cm, preferably less than or equal to 6 cm.
    [3]
    3. Screen system as claimed in claim 1 or 2, wherein the guide wires which extend between the screen cloths of the screen devices extend substantially in a divided plane.
    [4]
    Screen system as claimed in any of the foregoing claims, wherein in each case two guide wires of the guide wires extending between the screen cloths of the screen devices in the direction of the respective plane in which the guide wires extend are positioned adjacent to each other and the one screen profile by means of a first The wire guide is coupled to one guide wire and the other screen profile is coupled to the other guide wire by means of a second wire guide.
    [5]
    Screening system as claimed in claim 4, wherein the center-to-center distance between the guide wires positioned adjacent to each other in the respective plane in which the guide wires extend transversely to the direction of extension of the guide wires is in the range of 1 to 10 cm, more preferably in the range from 3 to 5 cm.
    [6]
    Screening system according to one of the preceding claims, wherein the distance between the plane in which the lower guide wires of the upper screen device extend and the plane in which the lower guide wires of the lower screen device extend is in the range of 4 to 10 cm, at is preferably in the range of 5 to 7 cm, more preferably is substantially 6 cm.
    [7]
    Screening system according to one of claims 1 to 6, wherein the screen devices are positioned between two spaced parts of a frame of a department store, and wherein the screen cloth of the one screen device along its edge opposite the edge at which the screen profile is connected to one part and the screen of the other screen device is connected along its edge opposite the edge to which the screen profile is connected to the other part.
    [8]
    Screen system according to one of claims 1 to 6, wherein the screen devices are positioned between two spaced parts of a frame of a department store, and wherein the screen cloths of both screen devices are along the edge thereof opposite the edge to which it screen profile is attached, connected to the same part.
    [9]
    Screen system according to one of claims 1 to 3, and claim 8, wherein both screen profiles are coupled by means of wire guides to each guide wire that extends between the screen cloths.
    [10]
    A display system according to any of claims 1 to 6, wherein - the display devices are positioned between two spaced apart parts of a frame of a department store; - the screen profile of a first of the screen devices extends on either side of the guide wires which extend between the two screen cloths; wherein - the screen cloth of the first screen device is connected to a first of the two parts along the edge of the screen cloth opposite the edge to which the screen profile is arranged; the screen profile of the second screen device is positioned between the first part of the frame and the screen profile of the first screen device; and - the screen cloth of the second screen device is arranged along an edge thereof on the screen profile of the second screen device and is arranged along an opposite edge on the screen profile of the first screen system.
    [11]
    The screen system of claim 10, wherein the screen profile of the first screen system comprises two parts, a first part at the top and a second part at the bottom of the guide wires extending between the screen cloths, which parts are at least near each guide wire which which extend between the screen cloths are mutually connected by means of connecting elements which form wire conductors.
    [12]
    The screen system of claim 10, wherein the screen profile of the first screen system comprises a one-piece body provided with wire guide holes through which the guide wires extend which extend between the screen cloths.
    [13]
    13. Screen system according to one of the preceding claims, wherein each screen device is provided with a drive device.
    [14]
    14. Screen system as claimed in claim 13, wherein the drive devices of the screen devices each comprise a pulling wire running substantially parallel to the guide wires and which is coupled by means of a coupling member to the screen profile of the relevant screen device.
    [15]
    The screen system of claim 14, wherein the puller wires and wire guides coupled thereto are positioned on the sides of the screen devices remote from each other.
    [16]
    Screen system as claimed in any of the foregoing claims, wherein the wire guides with which the screen profile in question is provided have an end remote from the screen profile which has a rounded shape.
    [17]
    Department store provided with a screen system according to one of claims 1 to 16.
    [18]
    Department store according to claim 17, comprising a frame, wherein the screen devices of the screen system are arranged between two spaced apart parts of the frame, the parts preferably running parallel to each other, the guide wires extending substantially transversely to the direction of extension extend from the parts.
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    同族专利:
    公开号 | 公开日
    BE1023634A1|2017-05-24|
    NL2015677B1|2017-05-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3727292A1|1987-08-17|1988-01-28|Gerhard Fabritz|Heat-insulating, movable roofing for greenhouses and swimming pools|
    NL1027091C2|2004-09-23|2006-03-27|Leen Huisman B V|Greenhouse and screen layout.|
    NL1040632C2|2014-01-27|2015-07-29|Screen4Seasons V O F|SCREEN DEVICE FOR CASES.|
    法律状态:
    2021-07-15| MM| Lapsed because of non-payment of the annual fee|Effective date: 20201031 |
    优先权:
    申请号 | 申请日 | 专利标题
    NL2015677A|NL2015677B1|2015-10-28|2015-10-28|Screen system for a department store.|
    NL2015677|2015-10-28|
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