EP4323618A1

EP4323618A1 - Panel arrangement, door leaf and door system

Info

Publication number: EP4323618A1
Application number: EP22721058.0A
Authority: EP
Inventors: Friedhelm Frede
Original assignee: Assa Abloy Entrance Systems AB
Current assignee: Assa Abloy Entrance Systems AB
Priority date: 2021-04-15
Filing date: 2022-04-07
Publication date: 2024-02-21
Anticipated expiration: 2042-04-07
Also published as: EP4323618B1; WO2022218785A1; EP4323618C0

Abstract

Present invention relates to a panel arrangement (100, 200) for a door leaf (20) formed by one or more panel arrangements (100, 200). The panel arrangement (100, 200) comprising a panel (110, 210) having a first and second main surface, the second 5 surface being opposite to the first and the first and second main surface, the panel (110, 210) further having transversal sides interconnecting the first and second main surface, one or more end caps (120, 220) each wrapping around one of the transversal sides of the panel (110, 210). The end cap (120, 220) comprises a first end cap part (121, 221) and a second end cap part (122, 222), the first end cap part (121, 221) extending along a 0 portion of the first main surface of the panel (110, 210) and the second end cap part (122, 222) extends along a portion of the second main surface of the panel. The end cap (120, 220) further comprises a third end cap part (123, 223) in a thermally insulating material connecting the first and second end cap part (121, 122, 221, 222).

Description

PANEL ARRANGEMENT, DOOR LEAF AND DOOR SYSTEM

Technical field

The present invention relates to a panel arrangement, a door leaf comprising such a panel arrangement and a door system comprising such a door leaf.

Background

Entrance systems having manual doors, doors with door closers or automatic doors can be found in various buildings today. Such entrance systems allow access to the building for pedestrians or vehicles while also enabling a desirable indoor climate and temperature inside the building.

In some applications roll up doors or overhead sectional doors are utilized. Such doors may comprise a plurality of interconnected door panels or sections or a single panel or section.

Energy saving becomes more and more important. Building doors are often installed in a building opening with a different temperature on each side of the door. Therefore it is of importance that those doors are well insulated to save energy and help to hold the indoor temperature constant. For insulation purposes, the door leaf may comprise a plurality of multilayer panels (e.g. sandwich panels). These panels often have a thin rigid shell that could be made of metal or plastics and an inside core of insulation material (e.g. foam, mineral wool etc.).

The shell is often connected with the core in a stiff manner (e.g. glued) and has different functions such as mechanical protection of the inside core against for example bumps or scratches, providing weather protection for the inside core, taking up bending load exerted on the panel, providing a structure for fixing lifting devices and other equipment and creating a nice design for the door leaf surface.

To be able to move a door leaf with limited power and for cost reasons, the door leaf preferably has a low weight. Therefore, the shell structure is commonly made of thin steel sheet and/or light material such as aluminum.

In roll up door systems and sectional door systems, the panels are lifted up to open the door. Therefore, such doors are equipped on both sides with, hinges and brackets to carry the lifting and guiding load. To be able to fasten these load bearing parts, the thin shells need to be reinforced. Otherwise, the load bearing parts may fall off. Therefore, in most applications, the door panels have reinforcement plates, which often are formed as U-profiles. The U-profiles holds the shell covers in place and provides finger protection against sharp panel edges.

The legs of the U-profiles touch the inside and outside shell covers respectively. If inside and outside panel surface temperature is different, a heat flow will occur via the end cap. This effect leads to an unwanted change of panel shell temperature and a worsened the U-value of the door system. In order to solve this, the panel may have two plates located on the inside and outside surface of the panel to reinforce the panel and raise the U-vale of the door system. Screws or bolds connect the plates. To prevent that the panel core gets deformed by the pressure and that the bolds get loosened, distance pieces (e.g. plastic) are located inside the panel. The disadvantage with this is that the outside plates and screws are visible and the manufacturing of the door panels is quite cost intensive.

The present inventor has realized that there is room for improvement in this field.

Summary

An object of the present invention is to achieve a panel arrangement, door leaf and door system, which addresses any of the above mentioned disadvantages.

Accordingly, a panel arrangement for a door leaf formed by one or more panel arrangements. The panel arrangements comprises a panel. The panel has a first and second main surface. The second surface is opposite to the first. The panel further has transversal sides interconnecting the first and second main surface. The panel arrangement comprises one or more end caps, each wrapping around one of the transversal sides of the panel. The end cap comprises a first end cap part and a second cap part. The first end cap part extends along a portion of the first main surface of the panel. The second end cap part extends along a portion of the second main surface of the panel. The end cap further comprises a third end cap part in a thermally insulating material connecting the first and second end cap part. The third end cap part extends along the transversal surface around which the end cap is wrapping and the third end cap part is in contact with the first end cap part and the second end cap part.

According to an aspect, a door leaf is provided. The door leaf comprises one or a plurality of interconnected panel arrangements according to the above. According to an aspect, a door system is provided. The door system comprises a door leaf according to the above being movable between a closed position and an opened position within a guiding track system.

Embodiments of the invention are defined by the appended dependent claims and are further explained in the detailed description section as well as in the drawings. It should be emphasized that the term “comprises/comprising” when used in this specification is taken to specify the presence of stated features, integers, steps, or components, but does not preclude the presence or addition of one or more other features, integers, steps, components, or groups thereof. All terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a/an/the [element, device, component, means, step, etc.]" are to be interpreted openly as referring to at least one instance of the element, device, component, means, step, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.

Brief description of the drawings

Objects, features and advantages of embodiments of the invention will appear from the following detailed description, reference being made to the accompanying drawings. Figure l is a schematic view of a door system according to one embodiment.

Figure 2a-c depicts cross-section views of a panel arrangement according to one embodiment.

Figure 3a-b depicts cross-section views of a panel arrangement according to one embodiment.

Detailed description of embodiments Embodiments of the invention will now be described with reference to the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The terminology used in the detailed description of the particular embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, like numbers refer to like elements.

Referencing Figure 1, a door system according to the invention is depicted. The door system 10 comprises a door leaf 20. The door leaf comprises one or a plurality of interconnected panel arrangements 100, 200. In one embodiment, the door leaf 20 has a plurality of panel arrangements 100, 200. The door system is arranged in an opening for controlling access through said opening.

The door leaf 20 is movable between a closed position and an opened position within a guiding track system 80. In the shown door system, the door is in the closed position.

The guiding track system 80 typically comprises two guide tracks 81, 82. A guide track 81, 82 is arranged at each side of the sectional door, i.e. one guide track 81 is arranged on a first, i.e. the right, side of the door leaf 20 and one guide track 82 on a second, i.e. the left, side of the door leaf 20.

The door system may be automatically and/or manually operated. In one embodiment, the door system 10 may comprise a motor 11 in driving connection with the door leaf 20. The motor 11 is arranged to move the door leaf 11 between the opened and closed position. The door system 10 may further comprise a transmission arrangement for transferring torque from motor 11 to the door leaf 20.

In one embodiment, the door system 10 is a roll up door system. The door leaf 20 may thus be a roll up door leaf. The door leaf 20 is mounted to a roll up shaft 15 of the door system 10. The door leaf 20 is movable between the closed and opened position by means of winding an unwinding of the door leaf 20 around the roll up shaft 15. The transmission arrangement may thus comprise the roll up shaft 15. In an alternative embodiment, the door system is a sectional door system, i.e. an overhead sectional door system. The door leaf 20 may be connected to the motor 11 via a lifting arm or a wire cable for lifting and lowering the door and moving the door leaf 20 between the opened and closed position. In one embodiment, the guiding track system comprises a first track 81 and a second track 82. The first track 81 and the second track 82 may be vertical tracks. The first vertical track 81 extends along a first vertical edge of the opening and the second vertical track 82 extends along a second vertical edge of the opening.

In one embodiment, each track comprises a vertical track portion, a horizontal track 19 portion and a curved track portion connecting the horizontal and vertical track portions. Hence, the guiding track system comprises a pair of vertical tracks and a pair of horizontal tracks connected by a pair of connecting track portions.

The door leaf 20 has an inner door surface forming a substantially vertical plane when the door leaf 20 is in the vertical closed position, i.e. a substantially vertical plane extending along the inner door surface. In one embodiment, the inner door surface is entirely vertical when the door leaf 20 is in the vertical closed position. In one embodiment, the inner door surface is concave, whereby the inner door surfaces extend concavely in view of a vertical plane when the door leaf 20 is in the vertical closed position. In one embodiment, the outer door surface may be substantially vertical while the inner door surface is substantially concave. In one embodiment, a first main surface of the panel may be entirely vertical or concave when the door leaf is in the vertical closed position.

The door leaf 20 has an outer door surface forming a substantially vertical plane when the door leaf 20 is in the vertical closed position, i.e. a substantially vertical plane extending along the outer door surface. In one embodiment, the outer door surface is entirely vertical when the door leaf 20 is in the vertical closed position. In one embodiment, the outer door surface is convex, whereby the outer door surfaces extend convexly in view of a vertical plane when the door leaf 20 is in the vertical closed position. In one embodiment, the inner door surface may be substantially vertical while the outer door surface is substantially convex. In one embodiment, a second main surface of the panel may be entirely vertical or convex when the door leaf is in the vertical closed position.

The door leaf 20 is formed by the plurality of panel arrangements 100, 200. Each panel arrangement comprises a panel 110, 210. The panel 110, 210 has a first and second main surface. The second main surface is opposite to the first main surface.

The inner door surface is formed by the first main surfaces and the outer door surface is formed by the second main surfaces of the panels 110, 210.

The number of panel arrangements are dependent on the height of the sectional door, i.e. the total height of the door leaf 20 and the height of panels. In an alternative embodiment, the door leaf 20 comprises a single panel, whereby the first and second main surface of the singe panel forms the inner door surface and the outer door surface respectively.

The panel arrangements 100, 200 of the door leaf 20 may be pivotally interconnected. Further referencing Figure 1, the panel arrangements 100, 200 may be connected to each other by means of hinges or a flexible band.

In one embodiment, the panel arrangements 100, 200 may be interconnected by means of connecting profiles. The connecting profiles may be in a flexible material, i.e. non rigid material such as rubber. The connecting profiles may extend along the panel arrangements 100, 200. Preferably such connecting profiles may be arranged to not take up any load during operation of the door leaf 20. Hence, preferably, such connecting profiles are utilized in conjunction with load carrying members intended to carry the weight of the door leaf. Such load carrying members will be described further with reference to Figure 2 and 3.

The connecting profiles thus serves to increase the safety of the door by covering the bottom and top edges of the panels and also preventing dirt, debris or moisture to accumulate between the panels. The connecting profiles may be connected to a top or bottom surface of the panel arrangements.

Figures 2 and 3 depicts embodiments of panel arrangements according to the present invention in the form of a panel arrangement for a roll up door system and a sectional door system respectively. As aforementioned, the panel 110, 210 has a first and second main surface. The panel 110, 210 further has transversal sides interconnecting the first and second main surface.

The panel arrangement 100, 200 comprises one or more end caps 120, 220. Each end cap 120, 220 wraps around one of the transversal sides of the panel 110, 210.

Preferably, the panel arrangement 100, 200 comprises two end caps 120, 220, whereby a first end cap wraps around a first transversal side of the panel and a second end cap wraps around a second transversal side of the panel.

The end cap comprises a plurality of parts. Accordingly, the end cap comprises a first end cap part 121, 221, second end cap part 122, 222 and a third end cap part 123, 223.

The first end cap part 121, 221 extends along a portion of the first main surface of the panel 110, 210.

The second end cap part 122, 222 extends along a portion of the second main surface of the panel 110, 210.

The end cap 120, 220 comprises the third end cap part 123, 223. The third end cap part 123, 223 is in a thermally insulating material. The third end cap part 123, 223 connects the first end cap part 121, 221 and the second end cap part 122, 222.

The third end cap part 123, 223 extends along the transversal surface around which the end cap 123, 223 is wrapping.

The third end cap part 123, 223 is in contact with the first end cap part 121, 221 and the second end cap part 122, 222.

The end cap design allows for a better U-value of the door system due to the third end cap part functioning as a thermal break between the first and second end cap part. The third end cap part is arranged between the first and second end cap part and prevents heat transfer between the first and second end cap part due to being in a material not allowing for high levels of heat transfer. Thus, the end cap designs allow for a door leaf and panel arrangement that is more thermal resistant.

Further, the design with three parts allows for easy adapting of the end cap in terms of materials. It allows for having the different end cap components in any type of suitable material, the end cap may thus be tailored towards its intended use. The third end cap part 123, 223 is in contact with the first end cap part 121, 221 and the second end cap part 122, 222 such that the first end cap part 121, 221 and the second end cap part 122, 222 are interconnected by means of the third end cap part 123, 223. The end cap thus wraps around a transversal surface of the panel, a transversal surface herein refers to a vertical edge of the panel which extends orthogonal to the width of the door leaf.

The end cap may thus be considered a U-shaped profile. The U-shaped profile comprising the first, second and third part. The legs of the U-shaped profile are formed by the first and second end cap part, respectively, whereby the third end cap part forms an intermediate part connecting said first and second end cap part.

The surface to which the third end cap part 123, 223 connects to first and second end cap part is thus a vertical surface extending along the vertical edge of the panel.

In one embodiment, the first and second end cap part may each be L-shaped. Thus, the first end cap part may be arranged to wrap around a first edge of the transversal side of the panel and the second end cap part may be arranged to wrap around a second opposite edge of the same transversal side of the panel.

In an alternative embodiment, the first and second end cap part may each be arranged to extend only along the first and second main surface of the panel respectively. The first and second end cap part may be interconnected by means of the third end cap part. The third end cap part may be arranged to wrap around the transversal side of the panel. The third end cap part may be substantially U-shaped, where a first and second leg of the third end cap part may extend along the first and second main surface, respectively. Advantageously, the third end cap part 123, 223 at least partly overlap with the first end cap part 121, 221. Further, the third end cap part 123, 223 at least partly overlap with the second end cap part 122. The third end cap part at least partly overlap with said first and second end cap part such that it connects to a surface of the first and second end cap part extending along the transversal surface around which the end cap 120, 220 is wrapping. The positioning and overlapping design of the third end cap part allows it to be mounted directly to the vertical sides of the panel, whereby no screws or other fastening elements are required on the main surfaces of the panel. This allows for more reliable and wear resistant sealing between the door and the opening, since sealing members may be easily arranged to directly interface with the end cap when the door is in the closed position.

The overlapping between the third end cap part and the first and second end cap part also allows for a more cost-efficient end cap in cases of smaller volumes, since it may be assembled in a simple operation when the door is installed. The overlapping allows for easy mounting with any type of conventional method readily available for the personnel installing the door. As depicted in Figure 2a-c the third end cap part may be mounted by means of fastening elements such as screws or bolts. Alternatively, the third end cap part may be fastened by means of an adhesive for example glue.

A thermally insulating material herein refers to a low heat conductivity material, i.e. a material configured to provide a lower level of heat transfer compared to a metal material. This reduces the risk for freezing or forming of ice on the inside or outside of the door leaf due to heat transfer through the door.

The skilled person recognized that a number of low heat conductivity materials may be suitable for the third end cap part. In one embodiment, the third end cap part 123, 223 is in a polymeric material such as polyamide (nylon) which may be glass-fiber reinforced. In one embodiment, the third end cap part 123, 223 is in a rubber material.

The first end cap part 121, 221 and/or second end cap part 121, 122, 221, 222 may be in any one of steel, aluminum, polymeric material, wood and rubber.

The panel 110, 210 may as depicted in Figure 2 and 3 comprise an outer shell 111, 211 forming the first and second main surface. The panel 110, 210 may further comprise a core 112, 212 at least partially encapsulated by the outer shell.

The core may be in a non-rigid material. The outer shell may be in a rigid material. The core may be in a foam material and the outer shell may be in metal such as aluminum or steel or in a polymeric and stiff material. The panel may be a sandwich panel. As the skilled person recognizes, the outer shell 111, 211 may be fully encapsulating and thus cover the first and second main surface as well as the transversal sides of the panel. Alternatively, the outer shell may cover the first and second main surface and not the transversal sides of the panel or only one of the transversal sides. The outer shell 111, 211 may cover an upper and lower edge surface of the panel or alternatively only the lower or upper edge surface of the panel.

In one embodiment, the panel 110, 210, e.g. the panel in its entirety, is in a non rigid material. The panel 110, 210 may be in a flexible material. The panel 110, 210 may be in a polymeric material. This is particularly advantageous for a roll up door leaf for a roll up door system since it allows for a lighter door capable of getting wound up around a shaft.

Further referencing Figure 2 and 3, the third end cap part 123, 223 forms a portion of an outer surface of the end cap 120, 220 facing away from the panel 110, 210. The third end cap part 123, 223 connects to a surface of the first and second cap part facing away from the panel 110, 210. This allows for easier mounting and assembling of the end cap compared to having the third end cap part facing towards the panel and being mounted to surfaces of the first and second end cap facing said panel. Also, the positioning of the third end cap part allows for easy visual inspection of the thermally insulating material and allows for early identification of cracks or other damage to the third end cap part.

The third end cap part thus protrudes outwardly away from the panel. The third end cap part accordingly faces the track when mounted to a door leaf.

In an alternative embodiment, the third end cap part may be inwardly facing. Accordingly, the third end cap part 123, 223 may form a portion of an inner surface of the end cap 120, 220 facing towards, i.e. facing, the panel 110, 210. The third end cap part 123, 223 connects to a surface of the first and second end cap part 121, 221, 122, 222 facing towards, i.e. facing, the panel 110, 210.

The first end cap part 121, 221 and the second end cap part 221, 222 are arranged at a distance from each other to form a gap g in the end cap 120, 220. The gap g extends along the transversal surface of the panel 110, 210. The third end cap part 123, 223 is arranged to bridge the gap g. The distance thus extends in a direction orthogonal to the vertical edge of the panel and the first and second main surface of the panel.

As depicted in Figures 2-3, the above referenced portion of the first end cap part 121, 221 and the second end cap part 122, 222 thus extends along the width of the door leaf.

In one embodiment, the portion of the first end cap part 121, 221 extending along the first main surface is shorter than the portion of the second cap part 122, 222 extending along the second main surface.

Figure 2a-c depicts a panel arrangement for a roll up door system. As depicted, the door leaf 20 may be guided in the guiding track system 80 by means of the end cap 120 interplaying with the guiding track system 80. The end cap 120 is thus arranged to extend inside the track 81. The track may form a track chamber. The track chamber may be a substantially open or closed track chamber. The end cap 120 may be arranged to extend inside said track chamber. During movement of the door leaf the end cap 120 moves in the track guided by the orientation of the track and potential guiding members 88, 89.

Such a system is lighter compared to a conventional door system with rollers arranged in the track for guiding of the door leaf.

As depicted in Figure 2a-c, the track(s) may be provided with guiding elements 88, 89. The guiding elements extend along the track 81, 82. A first guiding element 88 is arranged on a first side of the door leaf and a second guiding element 89 is arranged on a second side of the door leaf. Thus, the door leaf is guided by means of the guiding elements arranged in the track.

Thus, in the roll up door system, the guiding elements 88, 89 may be mounted along the track 81, 82 between the end cap 120 and said track 81, 82. The guiding members 88, 89 are thus arranged to be in contact with the end cap 120 and/or guide the door leaf by means of coming into contact with the door leaf. In one embodiment, the guiding members 88, 89 may be in the form of elongated profiles in an elastomeric material such as low friction plastic or plastic accommodating sliding contact, i.e. sliding plastic. The guiding members may be attached to opposite edges of the track, the end cap being arranged between said guiding members. Referencing said Figure 2a-c, the third end cap part 123 may at least partly overlap with the first end cap part 121 and the second end cap part 122. Although depicted in a roll up door system, such a third end cap part may be present in a panel arrangement for a sectional door system as well. The third end cap part 123 may bridge the gap g and attach to the first and second end cap part 121, 122. Thus, the third end cap part 123 may be attached to the first and second end cap part.

According to one embodiment, the first end cap part 121 and/or the second end cap part 122 is provided with mounting means 129. The mounting means 129 are adapted to be connected to one or more load carrying member. The load carrying member carries at least a part of the weight of the door leaf 20 during operation of said door leaf 20. The mounting means are intended to provide a rigid connection between the panel and the load carrying member. Preferably, the load carrying member connects the panel 100 to an adjacent panel of the door leaf. Hence, the end cap is intended to take some of the load of the weight of the door leaf during operation of said door leaf. This enable an end cap allowing for both desirable thermal transfer properties and durability. Further, the load carrying member being directly connected to the end cap allows for a door leaf where no additional support elements are required to be mounted to the main surfaces for carrying the load. Such additional support elements make the door leaf heavier and also potentially introduces bridges for heat transfer through the door leaf causing damage and wear.

In one embodiment, the one or more load carrying member comprises a hinge member. The hinge member connects the panel 110 to at least one adjacent panel of the door leaf 20. In one embodiment, the one or more load carrying member comprises a belt member 181 connected to a shaft of a door system for operating the door leaf. The shaft may include a spiral disc in which the belt is wound and unwound. In one embodiment, the belt member 181 connecting the panel 110 to a roll up shaft of a door system. The belt member 181 may be in metal such as steel. The belt member 181 may be in the form of a flat belt. In one embodiment, the belt member 181 interconnects the panels, i.e. panel arrangements of the door leaf. In one embodiment, each of the end caps of the door leaf may comprise mounting means adapted to be connected to the belt member 181.

The belt member may be considered a guiding element for accommodating the winding and unwinding of the door leaf around the roll up shaft.

As depicted in for example Figure 2c, the mounting means 129 may comprise a bracket adapted to be connected to the one or more load carrying member. The bracket is preferably formed as an integrated part of the first end cap part 121 or second end cap part 122. Alternatively, the bracket may form a separate sub-part of the first end cap part 121 or the second end cap part 122 connected to a section of the first end cap part 121 or second end cap part 122 being directly mounted to the panel 110.

As most clearly depicted in Figure 2c, the panel arrangement may comprise panel fastening means 131, 132. The panel fastening means 131, 132 are adapted to fasten the first end cap part 121 to the first main surface of the panel 110. The panel fastening means 131, 132 are further adapted to fasten the second end cap part 122 to the second main surface of the panel 110. Hence, the panel fastening means are adapted to connect the first end cap part with the first main surface of the panel 110 and the second end cap part the second main surface of the panel 110. Thereby, fixation points of the end cap part are disposed on the first and second main surfaces. This allows for the end cap to take up load on both sides of the panel arrangement which is particularly important during the roll up procedure in which the panel arrangement is subjected to high torques particularly when rolled up in the spiral disc of the shaft. Hence, a more durable panel arrangement is achieved. Furthermore, this mitigates the need for additional structural elements such as metal reinforcements for the strengthening the fastening of the end caps to the panel to withstand the winding and unwinding of the door leaf and/or the belt member, such metal reinforcements may lead to undesirable heat transfer and increases the weight of the door.

The first end cap part may thus be directly fastened to and directly in contact with the first main surface. Similarly, the second end cap part may be directly fastened to and directly in contact with the second main surface. The fastening means may include any conventional fastening means readily available for the skilled person. Such fastening means may include but not be limited to rivets, screws, glue and clamps. In the depicted embodiment, the panel fastening means comprises a first and second fastening element in the form of a first and second rivet. The first fastening element 131 connects the first main surface and the first end cap part 121. The second fastening element 132 connects the second main surface and the second end cap part 122.

Figure 3a-b depicts a panel arrangement for a sectional door system. The door leaf may be guided in the guiding track system 80 by means of guide rollers interfacing with said guiding track system 80.

Referencing said Figure 3a-b, the third end cap part 223 may be integrated into the first end cap part 221. The first end cap part 221 may thus be in a thermally insulating material. In an alternative embodiment, the third end cap part 223 may be integrated into the second end cap part 222. The second end cap part 222 may accordingly be in a thermally insulating material.

As depicted in Figure 3, the door system may comprise one or more sealing members 87. Said sealing member(s) may extend along the track. The sealing member(s) 87 are arranged to come into contact with the door leaf, i.e. the panel arrangements of the door leaf at least when the door leaf is in the vertical closed position.

In order to aid assembling and facilitate sealing against the sealing members on the outside, the portion of the first end cap part 121, 221 extending along the first main surface has a different length than the portion of the second end cap part 122, 222 extending along the second main surface. This allows for the end cap to protect the outer panel surface.

The sealing member 87 may be in the form of an elongated sealing lip 87 arranged to come into contact with the panel arrangement when the door is in the closed position. The sealing member 87 may be mounted to the track 81.

According to an aspect, a door system 10 is provided. The door system 10 comprises a door leaf 20 being movable between a closed position and an opened position within a guiding track system 80. In one embodiment, the first end cap part 121, 221 and/or the second end cap part 122, 222 of at least one panel arrangement 100, 200 of the one or more panel arrangement 100, 200 is provided with mounting means 129 connected to one or more load carrying member adapted to carry at least a part of the weight of the door leaf 20. As previously described, the one or more load carrying member may comprise the belt member 181. The belt member 181 is connected to a shaft of the door system 10 for operating the door leaf 20. The belt member 181 may be connected to the roll up shaft 15. The belt member 181 may connect the panel 110, 210 to the roll up shaft 15.

In one embodiment, the door system 10 is a roll up door system. The door leaf 20 is mounted to a roll up shaft 15 of the door system 10. The door leaf 20 is movable between the closed and opened position by means of winding and unwinding of the door leaf 20 around the roll up shaft 15. The door leaf 20 may be guided in the guiding track system 80 by means of the end cap 120 interplaying with the guiding track system 80. The invention has been described above in detail with reference to embodiments thereof. However, as is readily understood by those skilled in the art, other embodiments are equally possible within the scope of the present invention, as defined by the appended claims.

Claims

1. A panel arrangement (100, 200) for a door leaf (20) formed by one or more panel arrangements (100, 200), said panel arrangement (100, 200) comprising: a panel (110, 210) having a first and second main surface, the second surface being opposite to the first and the first and second main surface, the panel (110, 210) further having transversal sides interconnecting the first and second main surface, one or more end caps (120, 220) each wrapping around one of the transversal sides of the panel (110, 210), the end cap (120, 220) comprising a first end cap part (121, 221) and a second end cap part (122, 222), the first end cap part (121, 221) extending along a portion of the first main surface of the panel (110, 210) and the second end cap part (122, 222) extends along a portion of the second main surface of the panel (110, 210), wherein the end cap (120, 220) further comprises a third end cap part (123, 223) in a thermally insulating material connecting the first and second end cap part (121,

122, 221, 222), whereby the third end cap part (123, 223) extends along the transversal surface around which the end cap (120, 220) is wrapping and the third end cap part (123, 223) is in contact with the first end cap part (121, 221) and the second end cap part (122, 222).

2. The panel arrangement (100, 200) according to claim 1, wherein the third end cap part (123, 223) at least partly overlap with the first and second end cap part (122, 222).

3. The panel arrangement (100, 200) according to claim 2, wherein the third end cap part (123, 223) at least partly overlap with the first and second end cap part (122, 22) such that it connects to a surface of the first and second end cap part (121, 221, 122, 222) extending along the transversal surface around which the end cap (120, 220) is wrapping.

4. The panel arrangement (100, 200) according to any one of the preceding claims, wherein the third end cap part (123, 223) is in a polymeric material such as polyamide, or in a rubber material.

5. The panel arrangement (100, 200) according to any one of the preceding claims, wherein the first and/or second end cap part (121, 122, 221, 222) is in any one of steel, aluminum, polymeric material, wood and rubber.

6. The panel arrangement (100, 200) according to any of the preceding claims, wherein the first and second end cap part (121, 122, 221, 222) are arranged at a distance from each other to form a gap (g) in the end cap (120, 220) extending along the transversal surface of the panel (110, 210), wherein the third end cap part (123, 223) is arranged to bridge said gap (g).

7. The panel arrangement (200) according to any one of the preceding claims, wherein the third end cap part (223) is integrated into the first end cap part (221) or the second end cap part (222), wherein said first end cap part (221) or second end cap part (222) also is in a thermally insulating material.

8. The panel arrangement (100) according to any one of claim 1 to 6, wherein the third end cap part (123) is attached to the first and second end cap part (121, 122).

9. The panel arrangement (100, 200) according to any one of the preceding claims, wherein the third end cap part (123, 223) forms a portion of an outer surface of the end cap (120, 220) facing away from the panel (110, 210) and the third cap part (123, 223) connects to a surface of the first and second end cap part (121, 221, 122,

222) facing away from the panel (110, 210).

10. The panel arrangement (100, 200) according to any one of claim 1 to 8, wherein the third end cap part (123, 223) forms a portion of an inner surface of the end cap (120, 220) facing towards the panel (110, 210) and the third end cap part (123, 223) connects to a surface of the first and second end cap part (121, 221, 122, 222) connects to a surface of the first and second end cap part (121, 221, 122, 222) facing towards the panel (110, 210).

11. The panel arrangement (100, 200) according to any one of the preceding claims, wherein the portion of the first end cap part (121, 221) extending along the first main surface has a different length than the portion of the second end cap part (122, 222) extending along the second main surface.

12. The panel arrangement (100, 200) according to any one of the preceding claims, wherein the panel (110, 210) comprises an outer shell (111, 211) forming the first and second main surface and a core (112, 212) at least partially encapsulated by said outer shell (111, 211).

13. The panel arrangement (100, 200) according to claim 12, wherein the core

(112, 212) is in a non-rigid material and the outer shell (111, 211) is in a rigid material.

14. The panel arrangement (100, 200) according to any one of claim 1 to 11, wherein panel (110, 210) is in a non-rigid material.

15. The panel arrangement (100, 200) according to any one of the preceding claims, further comprising panel fastening means (131, 132) adapted to fasten the first end cap part (121, 221) to the first main surface of the panel (110, 210) and the second end cap part (122, 222) to the second main surface of the panel (110, 210).

16. The panel arrangement (100, 200) according to any one of the preceding claims, wherein the first end cap part (121, 221) and/or the second end cap part (122, 222) is provided with mounting means (129) adapted to be connected to one or more load carrying member carrying at least a part of the weight of the door leaf (20) during operation of said door leaf (20).

17. The panel arrangement (100, 200) according to claim 16, wherein the one or more load carrying member comprises a hinge member connecting the panel (110, 210) to at least one adjacent panel of the door leaf (20).

18. The panel arrangement (100, 200) according to claim 16 or 17, wherein the one or more load carrying member comprises a belt member (181) connected to a shaft of a door system (15) for operating the door leaf (20).

19. The panel arrangement (100, 200) according to any one of claim 16 to 18, wherein the mounting means (129) comprises a bracket adapted to be connected to the one or more load carrying member.

20. A door leaf (20) comprising one or a plurality of interconnected panel arrangements (100, 200) according to any one of the preceding claims.

21. The door leaf (20) according to claim 20, wherein the plurality of interconnected panel arrangements (100, 200) are interconnected by means of connecting profiles in a flexible material extending along the panel arrangements (100, 200).

22. A door system (10) comprising a door leaf (20) according to claim 20 or 21, the door leaf (20) being movable between a closed position and an opened position within a guiding track system (80).

23. The door system (10) according to claim 22, wherein the door system (10) is a roll up door system, wherein the door leaf (20) is mounted to a roll up shaft (15) of the door system (10), wherein the door leaf (20) is movable between the closed and opened position by means of winding and unwinding of the door leaf (20) around the roll up shaft (15).

24. The door system (10) according to claim 23, wherein the first end cap part (121, 221) and/or the second end cap part (122, 222) of at least one panel arrangement (100, 200) of the one or more panel arrangement (100, 200) is provided with mounting means (129) connected to one or more load carrying member adapted to carry at least a part of the weight of the door leaf (20).

25. The door system (10) according to claim 24, wherein the one or more load carrying member comprises a belt member (181) connected to a shaft of the door system (10) for operating the door leaf (20).

26. The door system (10) according to claim 25, wherein the belt member (181) is connected to the roll up shaft (15).

27. The door system (10) according to any one of claim 22 to 26, wherein the door leaf (20) is guided in the guiding track system (80) by means of the end cap (120) interplaying with said guiding track system (80).