WO2020104344A1

WO2020104344A1 - Overhead door system

Info

Publication number: WO2020104344A1
Application number: PCT/EP2019/081570
Authority: WO
Inventors: Antonius PETERSE; Marco Krechting; Jildert GAASTRA
Original assignee: Assa Abloy Entrance Systems Ab
Priority date: 2018-11-20
Filing date: 2019-11-18
Publication date: 2020-05-28

Abstract

Present invention relates to an overhead door system for covering a door opening in a wall (12), the overhead door system comprising a door blade (11), the door blade (11) being movable between a vertical closed position and a horizontal, opened or overhead position within a side frame (21) comprising a pair of vertical tracks (13) and a pair of horizontal tracks (14), connected by a pair of connecting track portions (15). The overhead door system comprises a sealing arrangement provided along each vertical end of the door blade (11). The sealing arrangement comprises a sealing member (90) provided on the door blade (11) along the vertical end of said door blade (11) or along the vertical end of the door opening.

Description

OVERHEAD DOOR SYSTEM

TECHNICAL FIELD

The disclosure pertains to the field of overhead door systems. The present invention relates to an overhead door system with a sealing arrangement.

BACKGROUND OF THE INVENTION

Overhead doors systems are often utilized to selectively provide access for large objects, such as vehicles, to a building due to such door systems being able to seal off relatively large entrances at a comparatively low cost.

Overhead door systems generally comprises a door element which may be foldable by means of comprising a plurality of interconnected panels or a single panel in the form of a solid element. Such overhead door systems may be manually operated or automated by means of a motor and a belt arrangement for forcing the movement of the door element.

To allow for the vertical movement of the door element the door system is provided with tracks for receiving wheels of a carrier attached to the door element. The tracks has both vertical and horizontal sections connected by a connecting section for guiding the movement of the door element from a vertical position, i.e. a closed position, and a horizontal position, i.e. an opened position.

Overhead door systems are associated with challenges in terms of insulation due to their design. In order to limit heat dissipation through the overhead door system and achieving a lower U-value, i.e. overall heat transfer coefficient, different sealing arrangements has been implemented into conventional overhead door systems. In more simple sealing arrangements, rubber flaps are utilized for sealing between the door blade and the side frame when the door blade is in a closed position. However, due to shifting tolerances in the overhead door system there is a risk for the rubber flaps not properly deforming to provide the sufficient insulation. To achieve a lower U-value sealing arrangements may further be provided with an insulating chamber formed between a sealing profile and the door blade when the door blade is in a closed position. Such a sealing arrangement is often bulky and limits the moving space for the door blade. Accordingly, the sealing arrangement may become subjected to damage due to the rubber flap and sealing chamber being clamped together when the door closes.

In the light of the above, there is a need to provide an improved sealing for an overhead door system.

SUMMARY

An object of the present disclosure is to provide an overhead door system which seeks to mitigate, alleviate, or eliminate one or more of the above-identified deficiencies in the art and disadvantages singly or in any combination.

According to an aspect an overhead door system for covering a door opening in a wall is provided. The overhead door system comprises a door blade, the door blade being movable between a vertical closed position and a horizontal, opened or overhead position within a side frame. The side frame comprises a pair of vertical tracks and a pair of horizontal tracks, connected by a pair of connecting track portions.

The overhead door system further comprises a sealing arrangement provided along each vertical side of the door opening when the door blade is in the vertical closed position.

The sealing arrangement comprises a sealing member provided on the door blade along the side of said door blade or along the vertical side of the door opening. Said sealing member comprises a first sealing flange and a second sealing flange extending parallel along the sealing member.

Said first sealing flange and second sealing flange are arranged at a distance from each other to form a sealing phase extending between said sealing flanges. The first sealing flange and the second sealing flange are arranged to seal against a corresponding surface of the door blade, the wall or the side frame when the door blade is in the vertical closed position to form an insulating chamber between the sealing flanges, the sealing phase and the corresponding surface. The insulating chamber is disposed along the vertical end of the door opening between the wall and a first phase of the door blade facing the wall.

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing will be apparent from the following more particular description of the example embodiments, as illustrated in the accompanying drawings in which like reference characters refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the example embodiments.

Fig. 1 illustrates an exemplary overhead door system comprising a sealing

arrangement according to one embodiment.

Fig. 2 illustrates a cross-section view of sealing arrangements for an overhead door system according to an embodiment known in the prior art.

Fig. 3 illustrates a cross-section view of sealing arrangements for an overhead door system according to an embodiment known in the prior art. Fig. 4 illustrates a cross-section view of sealing arrangements for an overhead door system according to an embodiment.

Fig. 5 illustrates a cross-section view of sealing arrangements for an overhead door system according to an embodiment

DETAILED DESCRIPTION

Present invention relates to a sealing arrangement and an overhead door system comprises such a sealing arrangement. Fig. 1 shows a schematic front view of a first embodiment of an overhead door 10 with the features of the invention in a closed state. The overhead door 10 has a door blade 1 1 for covering a door opening in a wall 12, running in a side frame. In the shown example, the door blade 1 1 covers a door opening surrounded double-sided by the side frame 21 , the wall 12 and by a ceiling above. The side frame 21 has double-sided a vertical track 13, provided as a guiding element on the left and on the right side of the door blade 11 , respectively. Further, the side frame has double-sided a horizontal track 14. The horizontal track 14 runs transversely, in this execution example perpendicular to the vertical track 13, extending rearward to the door blade 1 1. A connecting portion 15 with a curved shape connects the vertical track 13 and the horizontal track 14, providing a guideway 16. The horizontal tracks 14 of the side frame are fixed at a rear side under the ceiling. At a front side the horizontal tracks 14 are fixed at the vertical tracks 13 of the side frames, respectively. Accordingly, the overhead door system comprises a pair of vertical tracks 13 and a pair of horizontal tracks 14 connected by a pair of connecting track portions 15. Guiding arrangements 70 are attached to the door blade 1 1 for interfacing with the tracks. The door blade 1 1 is movable between a vertical closed position and a horizontal, opened or overhead position within the side frame.

In one embodiment, the door blade 1 1 comprises a plurality of panels 17. The shown door blade 1 1 comprises four panels 17, consisting of a rigid material. To provide a better overview, reference signs are only attached to two panels 17. The height of the panels 17 may be between 150 and 1000 millimeters. The height of the panel may for example vary from 400 millimeters from 675 millimeters, making it possible to suit the door’s style to that of the building. As the skilled person recognizes, the panels may be of any size suitable for the application of the overhead door system.

At least one of the panels 17 are connected to a driving member 8 connected to a motor 25 for operating the door blade 1 1 along the tracks. In one embodiment, one of the topmost panels 17 may be connected to the motor 22 by means of a lifting arm 8. Said lifting arm 8 is arranged to transfer the torque from the motor 25 to one of the panels 17 to pull and push the door blade along the tracks. With reference to Fig. 1 , the lifting arm 8 is connected to the topmost panel 17.

In one embodiment, the driving member may be a driven belt. Accordingly, one belt connects end pieces of the panels 17 on both sides of the panels 17, respectively. Thereby the belt works as a lifting device and as a hinge between the panels 17. The belt runs in vertical direction in a slot 19 on both sides of the vertical track 13 of the side frame, respectively. The belts 20 may be constructed as flexible, flat belts. The motor 25 may be connected to a belt drive for operating the cable. The motor 25 may be connected to a gear box for transferring torque from the motor 25 to the belt drive.

In one embodiment, the driving member may be a cable, preferably in steel. The cable connects to at least one of the panels 17. Thereby the cable works as a lifting device. Further, one cable may connect end pieces of the panels 17 on both sides of the panels 17, respectively. The cable may run in vertical direction in a slot on both sides of the vertical track 13 of the side frame, respectively. The motor 25 may be connected to a cable drum for operating the cable. The motor 25 may be connected to a gear box for transferring torque from the motor 25 to the cable drum.

In one embodiment the belt or cable may only be connected to the bottommost panel of the door blade 1 1 . Hence the door blade is lifted by means of the belt or cable working as a lifting device for lifting the bottommost panel of the door blade 1 1 and consequently lifting the entire door blade by means of the lifting force applied to said bottommost panel.

Turning to Fig. 2, a sealing arrangement known in the prior art is depicted. The vertical track 1 13 is attached to the wall or frame 1 12. Said vertical track 1 13 is arranged to receive a plurality of rollers attached to the door blade 1 1 1 . The vertical track 1 13 has a flange for receiving a rigid sealing profile 194 which may be a rigid plastic sealing profile 194.

A rubber flap 193 is attached to the rigid sealing profile, whereby the rubber flap 193 is arranged to come into sealing contact with the door blade 1 1 1 when said door blade 1 1 1 is in its closed position. Due to a certain play being required in the overhead door system the rigid sealing profile 194 generally does not come into contact with the door blade 1 1 1 . Hence a gap occurs between the door blade 1 1 1 and the rigid sealing profile 194 which increases the risk for air passing through the sealing under the rubber flap 193. Further, the gap may increase the risk for pinching as well as reduce the perceived safety of the overhead door system.

Fig. 3 depicts an alternative sealing arrangement known in the prior art. The rigid sealing profile 194 comprises an insulating chamber 195. The insulating chamber is formed by a hollow section of said rigid sealing profile 194 which extends along said rigid sealing profile. Hence, stagnant air is trapped inside the insulating chamber 195. The trapped stagnant air provides the desired insulation between the door blade 1 1 1 and the wall or frame 1 12.

Although generally providing a more sufficient insulation compared to the sealing arrangement depicted in Fig. 2 the insulating chamber 195 is associated with operational challenges and drawbacks. Due to the limited movement space for the door blade 1 1 1 , the door blade 1 1 1 may hit the bottom of the rigid sealing profile 194 which forms the sealing chamber 195. This may cause damage to the seal due to undesired peak forces. The consequent deformation of the seal may lead to switching of the operating direction of the operator, i.e. the drive controlling the door blade 11 1 of the overhead door system. To address the aforementioned shortcomings and drawbacks associated with the sealing arrangements known in the prior art, an overhead door system is with a sealing arrangement is provided.

Fig. 4 schematically depicts a cross-section of a sealing arrangement according to one embodiment. The sealing arrangement is provided along each side of the door blade 1 1 to prevent air influx between the door blade 1 1 and the surrounding wall or frame 12 when the door blade 1 1 is in the vertical closed position. The sealing arrangement is provided along each vertical side of the door opening when the door blade is in a vertical closed position.

The sealing arrangement comprises a sealing member 90. The sealing member 90 may be provided on the door blade 1 1 along the side of said door blade 1 1 or along the vertical side of the door opening.

The side of the door blade 11 herein refers to the outward ends of the door blade 1 1 adjacent to the vertical tracks when the door blade 1 1 is in the vertical closed position. Accordingly the sealing member may extend vertically along the door blade 1 1 when the door blade 1 1 is in the vertical closed position.

Outwards is herein defined as a horizontal direction extending away from the center of the door blade 1 1 towards the vertical tracks 13. Correspondingly, inwards is herein defined as a horizontal direction extending towards the center of the door blade 1 1 away from the vertical tracks 13. The sealing member 90 comprises a first sealing flange 95 and a second sealing flange 94, both of which extending parallel along the sealing member 90. Accordingly said sealing flanges protrude from an outer phase of the sealing member 90 along the length of said sealing member 90. The outer phase may be arranged to face the first phase of the door blade 1 1 or the wall 12.

To achieve the desired sealing and insulation, said first sealing flange 95 and second sealing flange 94 is arranged at a distance from each other to form a sealing phase 96 extending between said sealing flanges. In addition the first and second flanges are arranged to seal against and/or to come in sealing contact with a corresponding surface of the door blade 1 1 , the wall 12 or the side frame 21 when the door blade 1 1 is in the vertical closed position. The sealing flanges comes into contact with the corresponding surface to form an insulating chamber 70 between the sealing flanges 95, 94, the sealing phase 99 and the corresponding surface disposed along the vertical end of the door opening between the wall 12 and a first phase of the door blade 1 1 facing the wall 12. The insulating chamber 70 traps stagnant air which decreases the U-value of the overhead door system due to its insulating properties. Compared to a sealing arrangement with a fixed integrated chamber like the one depicted in Fig. 3 the sealing arrangement allows for the insulating chamber to only be formed when the door blade is closed and the sealing and insulation is desired. Hence, the sealing profiles does not have to comprise an integrated hollow chamber for trapping stagnant air, this may be associated with several benefits, for example:

A softer material may be utilized for the first and/or second member due the sealing member not having to include hollow chamber, since the maintaining integrity of a hollow chamber extending through the cross-section requires a more rigid material. A softer material is beneficial both in terms of sealing and longevity.

The sealing arrangement according to the above described embodiment requires less space compared to a sealing arrangement with an integrated sealing chamber. Hence, the operational space for the door blade, i.e. the space required for the movement of the door blade, is increased which reduces the risk for undesired collisions between sealing and door blade 1 1 , significant tolerance errors etc. An integrated sealing chamber makes the sealing profile more susceptible to damaging deformation, cracking and wear due to peak forces in the profile, particularly around the corners of the integrated hollow chamber. This may be mitigated by the seal arrangement according to the above presented embodiment. The sealing arrangement hence provides a desired U-value while addressing some of the structural challenges associated with insulating chambers known in the prior art.

Notably, the above mentioned advantages may be achieved without the first and second flanges being in direct contact. A sufficient insulating effect may be achieved even if a small gap is provided between the first and second flanges and the corresponding surface.

The sealing phase 99 may be substantially orthogonal to the first sealing flange 95 and the second sealing flange 94. In one embodiment, the sealing phase 99 extends substantially parallel to the first phase of the door blade 1 1 when the door blade 11 is in the vertical closed position. In one embodiment, the sealing member 90 is in a resilient material. The resilient material may be rubber. Accordingly, the sealing member 90 may be in the form of an elongated rubber profile into which the first sealing flange 94 and the first sealing flange 95 may be integrated. Hence, a sealing member which may be less complex to manufacture may be achieved. In Fig. 4 the sealing member 90 is attached to the side frame 21. Accordingly, the sealing member 90 is provided along the vertical track 13. Hence, the corresponding surface may be the first phase of the door blade 1 1 , whereby the insulating chamber 70 is formed by the sealing flanges 95, 94, the sealing phase 99 and the first phase of the door blade 1 1 . As the skilled person may realize the sealing arrangement can be mirrored between the door blade 1 1 and the wall/side frame. Accordingly, the sealing member 90 may be provided on the door blade 1 1 instead. Hence, the corresponding surface which together with the sealing flanges 95, 94 and the sealing phase 99 may be a surface of the wall 12 or the side frame 21 facing the door blade 1 1 (i.e. when the door blade 1 1 is in the vertical closed position). In one embodiment, the vertical track 13 is attached to a main side frame profile 22 of the side frame 21. Said main frame profile may extend around the door opening, whereby each of the vertical tracks, horizontal tracks and connecting portions may be attached to it. Referencing Fig. 4, the main side frame profile 22 is attached to the wall 12. The sealing member 90 is attached to the main side frame profile 22. According to the depicted embodiment, the sealing flanges extend from the main side frame profile 22 towards the door blade 1 1 , e.g. the first phase of the door blade 1 1 , when said door blade 1 1 is in the vertical closed position. In one embodiment, the sealing member 90 is attached to the side frame 21. In one embodiment, the sealing member 90 is press-fitted onto the side frame 21. With reference to Fig. 4, the sealing member 90 is press-fitted onto the main side frame profile 22. The sealing member 90 thus comprises a recess 96 arranged to receive the main side frame profile 22. The recess main side frame profile 22 may comprise an indentation 62 arranged to receive a retaining lip 97 of the sealing member 90. Accordingly, said retaining lip 97 is adapted to elastically deform for allowing the recess 96 to receive the main side frame profile 22 and elastically expand when interfacing with the indentation 62 to retain the sealing member 90 to the main side frame profile 22. In one embodiment, the vertical track 13 is attached to the main side frame profile 22. The main side frame profile 22 may comprise a track connecting portion 23 for attaching the vertical track 13. The track connecting portion 23 may extend substantially orthogonal to the door blade 1 1 when the door blade is in the closed vertical position. With reference to Fig. 4 the track connecting portion 23 may extend from the wall 12 parallel to the cross-section of the vertical track 13.

The vertical track 13 is arranged to receive guiding rollers attached to the door blade 1 1. Accordingly, the vertical track 13 comprises a roller receiving portion which extends along said vertical track 13.

The door blade 11 may comprise at least one panel, as referenced with the panels 17 in Fig. 1. According to some embodiments the door blade comprises a plurality of interconnected panels. In one embodiment, the door blade 1 1 comprises at least one panel and at least one end cap 80. The end cap 80 is attached to a side end phase of the panel. Hence, the first phase of the door blade 1 1 is defined by corresponding first phases of each of the panels forming the door blade 1 1 . According to said embodiments, the sealing member may be provided along the vertical side of the door opening.

In one embodiment, the door blade 1 1 comprises at least one end cap 80 attached to a side end phase of the door blade 1 1 .

In one embodiment, the door blade 1 1 comprises a plurality of interconnected panels, whereby the end caps 80 are attached to the side end phases of each panel. In one embodiment, end caps 80 are attached to each side end phase of the panel(s).

In one embodiment, the end caps 80 may be attached to each side end phase of each panel for interfacing with the sealing member 90. Consequently, each of the end caps 80 may be arranged to interface with said sealing member 90 when the door blade is in the closed vertical position.

The sealing member 90 may extend continuously and seal against and/or come into sealing contact with each end cap 80 intermittently.

The end cap(s) may be in a substantially rigid material, such as plastic, aluminum or steel and serves to protect the side end phases of the panels from moisture or mechanical stress. This may be of particular importance if the door panels comprises sandwich materials, whereby layers of the material of the panels may be sensitive to exposure for moisture or mechanical stress.

In one embodiment, the door blade 1 1 comprises a plurality of interconnected panels, wherein an end cap 80 is attached to side end phases of a plurality of panels. In one embodiment, a single end cap may extend along the entire side of the door blade 1 1 .

As depicted in Fig. 4, the sealing member 90 is arranged to seal against and/or to come into sealing contact with the end cap 80 to form the insulating chamber 70 between the first sealing flange 95, the second sealing flange 94, the sealing phase 99 and the end cap 80.

In one embodiment, the second sealing flange 94 protrudes a larger distance from the sealing phase 99 than the first flange 95. The second sealing flange 94 is arranged to at least partly extend along the side end phase of the door blade 1 1 when the door blade 1 1 is in the vertical closed position. Hence, the second sealing flange 94 may be arranged to seal against the side end phase of the door blade 1 1 , i.e. against the side end phase of the end cap 80.

In one embodiment, the end cap 80 comprises an abutment heel 81 protruding horizontally from the side end phase of the door blade 11. Said abutment heel 81 is disposed parallel to and at a distance from the first phase of the door blade 1 1. Further, the second sealing flange 94 is arranged to seal against and/or to come into sealing contact with the abutment heel 81 when the door blade 1 1 is in the vertical closed position. Thereby, the second sealing flange 94 is arranged to at least partly wrap around the side end phase of the door blade 1 1 when said door blade 11 is in the vertical closed position. Due to the second sealing flange wrapping around the side end phase of the door blade 1 1 the sealing is less susceptible to shifting tolerances due to the contact surface between the end cap and the flange being relatively large compared to the tip of the flange abutting to a sealing surface. Further, the improved insulating effect reduces the need for subjecting the sealing flanges to large contact forces in order to provide the desired insulating effects, whereby an overhead door system less susceptible to wear is achieved.

The end cap 80 may thus extend around the end side phase of the panel. Accordingly, the first sealing flange 95 may be arranged to seal against and/or to come in sealing contact with a first end cap phase aligned with the first phase of the door blade, i.e. the panel of the door blade. A second end cap phase of the end cap 80 is aligned with the side end phase of the panel, whereby the abutment heel 81 extends outwardly from said second cap phase. In one embodiment, the end cap 80 comprises an end cap projection 87 protruding horizontally from the side end phase of the door blade 1 1. Said end cap projection 87 is disposed parallel to and at a distance from the first phase of the door blade 1 1. Further, said end cap projection 87 may extend parallel to and at a distance from the abutment heel 81. In one embodiment, the end cap projection 87 may be disposed closer to the second phase of the door blade 1 1 than the abutment heel 81. The end cap projection 87 and the abutment heel 81 may be arranged to receive the guiding arrangement which comprises guiding rollers for interfacing with the track 13. Hence, a portion of the guiding arrangement may be inserted and fixated between the end cap projection 87 and the abutment heel 81. This may allow for a more robust and stable movement pattern of the door blade 1 1 during operation due to the abutment heel and end cap projection holding the guiding arrangement in place.

In one embodiment, each end side phase of each end cap comprises the end cap projection 87 and the abutment heel 81. Each set of end cap projection 87 and abutment heel 81 may be arranged to receive the guiding arrangement. Further referencing Fig. 4, the sealing member 90 comprises a third sealing flange 92 extending parallel to the first and second sealing flange 95, 94. The third sealing flange 92 is arranged to seal against and/or to come in sealing contact with the first phase of door blade 1 1 when the door blade 1 1 is in the vertical closed position. Thereby, insulated chamber 70 becomes less exposed, due to said third sealing flange 92 covering the first sealing flange 95. The third sealing flange 95 thus mitigates outside tampering and provides additional sealing for the overhead door system. Further, the third sealing flange reduces the need for the door to exert large contact forces to the sealing members to provide a sufficient insulating effect due to the increased efficiency of the sealing arrangement. Hence, a more sustainable overhead door system may be achieved since the sealing members are subjected to less wear and stress.

In one embodiment, the third sealing flange 92 protrudes towards the first phase of the door blade 11 when the door blade 1 1 is in the closed vertical position. The third sealing flange 92 may extend substantially parallel to the first sealing flange 95 to form a second sealing phase 91. Said second sealing phase 91 extends between said third sealing flange 92 and the first sealing flange 95. The first and third sealing flange may extend substantially orthogonally to the second sealing phase 91. The second sealing phase 91 may be arranged in line with the first sealing phase 99.

In one embodiment, the third sealing flange 92 extends into a sealing member flap 93 extending along the third sealing flange 92 and protruding at an inward inclination relative said third sealing flange 92. The sealing member flap 93 is arranged to seal against and/or to come in sealing contact with the first phase of the door blade 11 when the door blade 1 1 is in the vertical closed position. When each of the third sealing flange 92 and the sealing member flap 93 is pressed against the first phase of the door blade 1 1 , the inclination of the sealing member flap 93 causes the third sealing flange to 92 to be pushed outwardly towards the end cap and the sealing member flap inwardly i.e. towards the center of the door blade 1 1 . Thereby, the sealing contact surfaces of the sealing arrangements are increased due to the sealing member flap 93 at least partially aligning with the first phase of the door blade 1 1 which further reduces the U-vale of the entrance system.

In one embodiment, the third sealing flange 92 is arranged inwardly from the first sealing flange 95 and the second sealing flange 94. The end cap 80 may comprise an end cap inner phase 84 forming an inner end phase of the end cap 80 extending along the end cap 80. The third sealing flange 93 is arranged to seal against and/or to come in sealing contact with the end cap member inner flange 84 between the third sealing flange 93 and the first sealing flange 95 when the door blade 1 1 is in the vertical closed position.

Hence, the third sealing flange 92 is arranged in a horizontal direction away from the vertical track 13 from the first sealing flange 95 and the second sealing flange 94 when the door blade 1 1 is in the vertical closed position.

The third sealing flange 92 and the sealing member flap 93 may accordingly fold away from each other when coming into contact with the door blade 1 1 when the door blade 1 1 is in the vertical closed position. This may be achieved by means of the inclination of the sealing member flap 93 forcing the third sealing flange 92, e.g. the tip of the third sealing flange, towards the end cap inner phase 84.

In one embodiment, the end cap inner phase 84 may be arranged substantially perpendicular to the door blade 1 1 and parallel to the first and second sealing flange when said door blade 1 1 is in the vertical closed position.

Fig. 5 depicts a cross-section view of sealing arrangements for an overhead door system according to an embodiment. According to said embodiment, the sealing arrangement further comprises a track cover flap 85. The track cover flap 85 is arranged to extend horizontally between the end cap 80 and the vertical track 13. Further said track cover flap 85 is arranged to cover the gap between a second phase of the door blade 1 1 and said vertical track 13 when the door blade 1 1 is in the vertical closed position. The second phase is opposite to the first phase of the door blade 1 1 . In other words, the first and second phase of the door blade 1 1 are formed by a first and second side of the door blade 1 1 , said first and second side being arranged to cover the door opening.

The track cover flap creates a closed-off track which hides the guiding rollers moving along the vertical track. This prevents an operator or user sticking the fingers into the track during for example service or operation of the door blade, thereby risking injury due to the guiding rollers moving inside the track. Hence, the track cover flap allows for a safer overhead door system.

Furthermore, the aesthetics of the overhead door system may be increased, thereby allowing for the overhead door system to more smoothly be integrated in the design of the building into which the overhead door system is arranged.

In one embodiment, the track cover flap 85 is attached to the end cap 80. Accordingly, a first end of the track cover flap 85 is attached to the end cap 80, whereby a second end of the track cover flap 85 is arranged to seal against and/or to come into sealing contact with the second phase of the door blade 1 1 when the door blade 1 1 is in the vertical closed position.

As derivable from Fig. 5, the track cover flap 85 may be attached to the end cap 80 by means of a hinge connection 83. In one embodiment, the first end of track cover flap 85 may be attached to the end cap 80 by means of a hinge connection 83. Hence, the track cover flap 85 may be able to pivot slightly around the degree of freedom defined by the hinge connection 83 upon coming into contact with the vertical track 13. Consequently, the desired contact between the track cover flap 85 and the vertical track 13 may be achieved without the track cover flap being subjected to excessive load due to deformation. Large deformation may cause wear and damage on the track cover flap, hence the hinge connection allows for a track cover flap which is more durable and less susceptible to wear and damage.

In one embodiment, the hinge connection 83 is formed by a hinge recess 82 for receiving a retention element 84 of the track cover flap 85. Said retention element 84 may be arranged to be pivotable inside said hinge recess 82.

In one embodiment, the track cover flap 85 is attached to the end panel projection 87. In one embodiment, the end panel projection 87 may comprise the hinge recess 82. The track cover flap 85 may be in a resilient material such as rubber.

Referring to Fig. 4 and 5, the vertical track 13 as depicted in Fig. 4-5, has a section 55 for receiving the guiding rollers attached to the door blade 1 1. In one embodiment, the second phase of the door blade may be substantially flush with the track cover flap 85 and said section 55. Thereby, an overhead door system which provides a more uniform surface aligned with the wall may be achieved.

In the drawings and specification, there have been disclosed exemplary embodiments. However, many variations and modifications can be made to these embodiments. Accordingly, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the embodiments being defined by the following claims.

Claims

1 . An overhead door system for covering a door opening in a wall (12), the overhead door system comprising a door blade (1 1 ), the door blade (1 1 ) being movable between a vertical closed position and a horizontal, opened or overhead position within a side frame (21 ) comprising a pair of vertical tracks (13) and a pair of horizontal tracks (14), connected by a pair of connecting track portions (15), wherein the overhead door system comprises a sealing arrangement provided along each vertical side of the door opening when the door blade is in the vertical closed position, said sealing arrangement comprising:

a sealing member (90) provided on the door blade (1 1 ) along the side of said door blade (1 1 ) or along the vertical side of the door opening,

wherein the sealing member (90) comprises a first sealing flange (95) and a second sealing flange (94) extending parallel along the sealing member (90), said first sealing flange (95) and second sealing flange (94) being arranged at a distance from each other to form a sealing phase (99) extending between said sealing flanges, whereby the first sealing flange (95) and the second sealing flange (96) are arranged to seal against a corresponding surface of the door blade (1 1 ), the wall (12) or the side frame (21 ) when the door blade (1 1 ) is in the vertical closed position to form an insulating chamber (70) between the sealing flanges (95, 94), the sealing phase (99) and the corresponding surface disposed along the vertical end of the door opening between the wall (12) and a first phase of the door blade (1 1 ) facing the wall (12).

2. The overhead door system according to claim 1 , wherein the sealing member (90) is in a resilient material.

3. The overhead door system according to claim 1 or 2, wherein the door blade (1 1 ) comprises at least one end cap (80) attached to a side end phase of the door blade (1 1 ).

4. The overhead door system according to claim 3, wherein the door blade (1 1 ) comprises at least one panel (17), whereby the at least one end cap (80) attached to a side end phase of the panel (17).

5. The overhead door system according to claim 3 or 4, wherein the sealing

member (90) is arranged to seal against the end cap (80) to form the insulating chamber (70) between the first sealing flange (95), the second sealing flange (94), the sealing phase (99) and the end cap (80).

6. The overhead door system according to any of the preceding claims, wherein the sealing member (90) is attached to the side frame (21 ).

7. The overhead door system according to claim 5 or 6, whereby the second

sealing flange (94) protrudes a larger distance from the sealing phase (99) than the first flange (95) and is arranged to at least partly extend along the side end phase of the door blade (1 1 ) when the door blade (11 ) is in the vertical closed position.

8. The overhead door system according to claim 7, wherein the end cap (80)

comprises an abutment heel (81 ) protruding horizontally from the side end phase of the door blade (11 ), said abutment heel (81 ) being disposed parallel to and at a distance from the first phase of the door blade (11 ), wherein the second sealing flange (94) is arranged to seal against said abutment heel (81 ) when the door blade (11 ) is in the vertical closed position.

9. The overhead door system according to any of the preceding claims, wherein the sealing member (90) comprises a third sealing flange (92) extending parallel to the first and second sealing flange (95, 94), the third sealing flange (92) being arranged to seal against the first phase of door blade (1 1 ) when the door blade (1 1 ) is in the vertical closed position.

10. The overhead door system according to claim 9, wherein the third sealing flange (92) extends into a sealing member flap (93) extending along the third sealing flange (92) and protruding at an inward inclination relative said third sealing flange (92), the sealing member flap (93) being arranged to come in sealing contact with the first phase of the door blade (1 1 ) when the door blade (1 1 ) is in the vertical closed position.

1 1. The overhead door system according to claim 9 or 10, wherein the third sealing flange (92) is arranged inwardly from the first and second sealing flanges (95, 94), whereby the end cap (80) comprises an end cap inner phase (84) forming an inner end phase of the end cap (80) extending along the end cap (80), the third sealing flange (93) being arranged to seal against the end cap member inner flange (84) between the third sealing flange (93) and the first sealing flange (95) when the door blade (11 ) is in the vertical closed position.

12. The overhead door system according to any one of claim 3 to 1 1 , wherein the sealing arrangement further comprises a track cover flap (85) arranged to extend horizontally between the end cap (80) and the vertical track (13) and cover the gap between a second phase of the door blade (1 1 ) and said vertical track (13) when the door blade (1 1 ) is in the vertical closed position, the second phase being opposite to the first phase of the door blade (1 1 ).

13. The overhead door system according to claim 12, wherein the track cover flap (85) is attached to the end cap (80).

14. The overhead door system according to claim 13, wherein the track cover flap (85) is attached to the end cap (80) by means of a hinge connection (83).