Sealing arrangement for fire door

Abstract

A sealing arrangement (1) for a fire door (10) comprises a frame part (110) to be connected or integrated to a lower part (10-A) of the fire door (10). Furthermore, the sealing arrangement comprises a sealing (120) for sealing a gap between the fire door (10) and the structure (10-B) below it in a closed position (11-A) of the fire door (10). In addition, the sealing arrangement comprises a lever mechanism (130) for moving the sealing (120) in relation to the frame part (110), wherein the lever mechanism (130) is connected to the frame part (110) and the sealing (120), and wherein the lever mechanism (130) comprises a first position (130-A) for positioning the sealing (120) against the structure (10-B) below the fire door (10) and a second position (130-B) for positioning the sealing (120) apart from the structure (10-B) below the fire door (10). The sealing arrangement additionally comprises a controller (140) for controlling the lever mechanism (130) to its first position (130-A) when the fire door (10) is in the closed position (11-A) and to its second position (130-B) when the fire door 10 is in the open position (11-B). Furthermore, the sealing arrangement comprises a spring element (150) for keeping the sealing (120) against the structure (10-B) below the fire door (10) when the lever mechanism (130) is in its first position (130-A).

Description

Background of the invention

[0001] The invention relates to a sealing arrangement for a fire door. Particularly, the invention relates to a sealing arrangement for a fire door in a rail vehicle.

[0002] For fire safety, vehicles must be divided into separate fire compartments at specific intervals. Such a requirement for dividing into fire compartments exists for rail traffic carriages, such as train carriages and underground train carriages. Fire compartments typically comprise a fire door for forming a passage way.

[0003] The sealing arrangement comprising a sealing is installed to the fire door to cover a gap below it. A problem is, however, that said sealing wears and tears when opening and / or closing the fire door.Brief description of the invention

[0004] It is an object of the present invention to provide a new type of a sealing arrangement for a fire door. The solution according to the invention is characterized by what is disclosed in the independent claim. Some embodiments of the invention are presented in the dependent claims.

[0005] The sealing arrangement for the fire door comprises a frame part to be connected or integrated to a lower part of the fire door. Furthermore, the sealing arrangement comprises a sealing for sealing a gap between the fire door and the structure below it in the closed position of the fire door. In addition, the sealing arrangement comprises a lever mechanism for moving the sealing in relation to the frame part, wherein the lever mechanism is connected to the frame part and the sealing, and wherein the lever mechanism comprises a first position for positioning the sealing against the structure below the fire door and a second position for positioning the sealing apart from the structure below the fire door. The sealing arrangement additionally comprises a controller for controlling the lever mechanism to its first position when the fire door is in the closed position and to its second position when the fire door is in the open position. Furthermore, the sealing arrangement comprises a spring element for keeping the sealing against the structure below the fire door when the lever mechanism is in its first position. In the presented solutions, the sealing arrangement is also reliable e.g. in rail vehicles because the spring element of the sealing arrangement and the force provided by it keep the sealing against the structure below the fire door regardless of possible vibrations existing in the rail vehicle. The sealing arrangement of the presented solutions is long-lasting because the sealing does not wear and tear when opening and / or closing the fire door.Brief description of the drawings

[0006] The invention will now be described in greater detail by means of preferred embodiments and with reference to the attached drawings, in which: Figure 1 schematically shows a side view of a sealing arrangement partially in cross-section, Figure 2 schematically shows the sealing arrangement of Figure 1 in its second position of use, Figure 3 schematically shows an oblique view of the sealing arrangement of Figure 1, Figure 4 schematically shows a side view of the sealing arrangement of Figure 1 installed to a rail vehicle when the fire doors are in the closed position, Figure 5 schematically shows a side view of the sealing arrangement of Figure 1 installed to a rail vehicle when the fire doors are in the open position, and Figure 6 schematically shows the sealing arrangement of Figure 1 seen in its cross-section. Detailed description of the invention

[0007] Figure 1 schematically shows a side view of a sealing arrangement partially in cross-section. Figure 1 shows the sealing arrangement when a fire door 10 is in a closed position 11-A. Figure 2 schematically shows the sealing arrangement of Figure 1 in its second position of use, that is, in other words, when the fire door is in an open position 11-B. Figure 3 schematically shows an oblique view of the sealing arrangement of Figure 1. Figure 4 schematically shows a side view of the sealing arrangement of Figure 1 installed to a rail vehicle 20 when the fire doors are in the closed position. Figure 4 shows two fire doors 10 but there may be at least one fire door. Figure 4 shows two fire doors side by side or, in other words, a pair of fire doors, but there may be only one fire door. Figure 4 very schematically shows the rail vehicle 20 as cross-cut and seen in its longitudinal direction. Figure 5 schematically shows a side view of the sealing arrangement of Figure 1 installed to the rail vehicle 20 when the fire doors are in the open position. Figure 5 very schematically shows the rail vehicle 20 as cross-cut and seen in its longitudinal direction. Figures 4 and 5 only show a wall of the rail vehicle 20 to which the fire door is fitted. Figure 6 schematically shows the sealing arrangement of Figure 1 seen in its cross-section.

[0008] The rail vehicle 20 comprises at least one carriage travelling on rails. The rail vehicle 20 may comprise several carriages connected to each other. The rail vehicle 20 may be e.g. a train comprising an engine and at least one carriage. The rail vehicle 20 may be e.g. a metro comprising an engine and at least one carriage. Carriages may be divided into fire compartments. The rail vehicle comprises at least one fire door. In more detail, a carriage comprises at least one fire door. The rail vehicle may comprise several fire doors. In more detail, a carriage may comprise several fire doors. The rail vehicle comprises a sealing arrangement for a fire door. There is a sealing arrangement fitted to the fire door. There are sealing arrangements fitted to the fire doors.

[0009] A sealing arrangement 1 for a fire door 10 comprises a frame part 110 to be connected or integrated to a lower part 10-A of the fire door 10. Furthermore, the sealing arrangement comprises a sealing 120 for sealing a gap between the fire door 10 and the structure 10-B below it in a closed position 11-A of the fire door 10. In addition, the sealing arrangement comprises a lever mechanism 130 for moving a sealing 120 in relation to the frame part 110, wherein the lever mechanism 130 is connected to the frame part 110 and the sealing 120, and wherein the lever mechanism 130 comprises a first position 130-A for positioning the sealing 120 against a structure 10-B below the fire door 10 and a second position 130-B for positioning the sealing 120 apart from the structure 10-B below the fire door 10. Said lever mechanism 130 is in other words a mechanism 130 for moving the sealing 120 in relation to the frame part 110. The sealing arrangement additionally comprises a controller 140 for controlling the lever mechanism 130 to its first position 130-A when the fire door 10 is in the closed position 11-A and to its second position 130-B when the fire door 10 is in the open position 11-B. Furthermore, the sealing arrangement comprises a spring element 150 for keeping the sealing 120 against the structure 10-B below the fire door 10 when the lever mechanism 130 is in its first position 130-A.

[0010] For clarity, it should be mentioned that the sealing arrangement 1 of the fire door 10 is positioned apart from the structure below the fire door in order for the sealing 120 of the sealing arrangement 1 not wearing and tearing when controlling the fire door. In addition, the sealing arrangement 1 of the fire door 10 is positioned against the structure below the fire door in order for the sealing arrangement 1 sealing a gap between the fire door and the structure below the fire door.

[0011] The fire door 10 of the figures is a linearly moving fire door or, in other words, the fire door is a linearly controllable fire door. In other words, the fire door 10 is a fire door linearly controllable along its rails. The fire door 10 comprises a lower part 10-A. The lower part 10-A of the fire door 10 is located on the bottom of the fire door. In other words, the lower part 10-A of the fire door 10 is located in the lower section of the fire door. Furthermore, the fire door 10 comprises an upper part 10-D located on the opposite side in relation to the lower part 10-A. In addition, the fire door 10 comprises side parts 10-C located in an area between the lower part 10-A and the upper part 10-D. The fire door 10 is configured to move in the linear direction to the closed position and the open position.

[0012] Additionally, the fire door 10 is intended to endure a specific time of fire, which specific time may be e.g. at least 15 minutes, at least 30 minutes, at least 45 minutes, or at least 60 minutes.

[0013] Furthermore, the fire door 10 comprises a door leaf 12. The door leaf 12 comprises main beams and plate structures for forming the door leaf 12. Said main beams and plate structures may comprise e.g. steel as their material. At least one main beam located on the bottom of (that is, low in) the door leaf 12 forms the lower part 10-A of the fire door. Said at least one main beam located low may form the frame part 110 of the sealing arrangement 1. At least one main beam located up in the door leaf 12 forms the upper part 10-D of the fire door. Main beams located on the edge, between the main beams forming said lower part 10-A and upper part 10-D form a side part 10-C of the fire door 10.

[0014] Furthermore, the fire door 10 comprises a door controller 14 for controlling the door leaf 12 linearly. The door controller 14 is connected between the door leaf 12 and the structure surrounding it. The door controller 14 comprises e.g. a guide bar and a coupling piece controllable along it.

[0015] In addition, the fire door 10 comprises a control apparatus 16 for forming the linear motion of the door leaf 12. The control apparatus 16 is connected to the door leaf 12. The control device 12 may comprise e.g. a cylinder and a system controlling it, such as e.g. a hydraulic cylinder and a hydraulic system controlling it or an electric cylinder and an electric system controlling it. The control apparatus 16 may alternatively comprise e.g. an electric motor which is configured to control a rack gear fitted to the door leaf 12.

[0016] The structure 10-B below the fire door 10 of the figures may be e.g. a floor structure. The structure 10-B below the fire door 10 may be e.g. the floor structure of a rail vehicle. The structure 10-B below the fire door 10 may be e.g. a floor panel, a floor beam, a plate structure or something equal. A part of the structure 10-B below the fire door may be on a passage through which people pass, and a part of the structure 10-B below the fire door may be a structure that is beside the passage, e.g. under a possible wall.

[0017] The frame part 110 of the sealing arrangement 1 of the figures is arranged to the lower part 10-A of the fire door 10. Said frame part 110 may be integrated to the lower part 10-A of the fire door 10. The frame part 110 is e.g. a main beam. The frame part 110 comprises two side walls 112 at a distance from each other. The frame part 110 comprises an upper wall 113 between the side walls 112. The frame part 110 is connected to the fire door 10 e.g. by welding or e.g. by means of fastening bolts arranged through the upper wall 113. The frame part 110 is open of its bottom. Between said side walls 112, it is possible to arrange a sealing 120, a lever mechanism 130 and a controller 140. The sealing arrangement 1 may be located below or on the side of the lower part 10-A of the fire door 10.

[0018] The sealing 120 of the figures comprises a sealing frame part 122 and a sealing part 124 fitted to it for corresponding to the structure 10-B below the fire door 10. It should still be mentioned that the sealing 120 may be formed of one piece, wherein the sealing 120 comprises a sealing frame part 122 and a sealing part 124 integrated to each other, as one piece. The sealing 120 is fitted to the frame part 110. The sealing 120 is arranged to extend from the frame part 110 to the structure 10-B below the fire door 10.

[0019] Furthermore, said sealing frame 122 is a profile. The profile may be e.g. a U profile. The sealing frame part 122 comprises two side walls 126 arranged at a distance from each other and a lower wall 128 connecting said side walls. The sealing frame part 122 comprises a sealing groove 122A. The sealing groove 122A comprises a shape enabling a shape locking. The sealing groove 122A is integrated to the profile. The sealing frame part 122 may comprise e.g. metal and / or plastic as its material. The sealing frame part 122 comprises a more rigid structure compared with the sealing part 124, which more rigid structure is obtained by shaping the materials and / or the structure.

[0020] Furthermore, said sealing part 124 is arranged to be connected to the sealing frame part 122. In more detail, the sealing part 124 is arranged to be connected to the sealing groove 122A of the sealing frame part 122. The sealing part 124 comprises a shape corresponding to the sealing groove 122A for forming a shape locking. The sealing part 124 may comprise e.g. rubber and / or plastic as its material for creating elastic properties. The sealing part 124 is configured to be replaceable. The sealing part 124 is a profile which comprises a hollow inner part 124B for creating elastic properties.

[0021] The lever mechanism 130 of the figures comprises a lever arm 132. The lever arm 132 may be formed of e.g. at least one longitudinal metal plate or metal bar. The lever arm 132 may be formed of e.g. two longitudinal metal plates or metal bars connected to each other. For its part, the level arm 132 enables a solution taking a small space in the vertical direction for the lever mechanism 130. The lever arm 132 enables the controlling of the sealing 120 by means of leverage.

[0022] The lever mechanism 130 of the figures is connected to the frame part 110. The lever arm 132 of the lever mechanism 130 is connected to the frame part 110. In more detail, the lever arm 132 is connected in a pivoted manner to the frame part 110. The lever arm 132 is configured to rotate around a connection formed by the frame part 110 and the lever arm 132. In a situation of use, said connection is configured to be located as a constant in relation to the frame part 110.

[0023] Furthermore, the connection between the lever arm 132 and the frame part 110 may be implemented e.g. the lever arm 132 being directly connected to the frame part 110. Said connection between the lever arm 132 and the frame part 110 may be implemented e.g. via a connecting piece 133. The lever mechanism 130 of the figures comprises a connecting piece 133, via which, the lever arm 132 is connected to the frame part 110. For clarity, it should be mentioned that the connecting piece 133 is not an essential part for forming the connection because it is possible to the connect the lever arm 132 directly to the frame part 110.

[0024] The lever mechanism 130 of the figures comprises a positioning mechanism 134 forming a positionable connection between the lever arm 132 and the frame part 110. Said connection may be positioned in the installation and / or service step of the sealing arrangement. The positioning mechanism 134 comprises a positioning screw 134A which is configured to rotate around a threaded hole arrangeable to the frame part 110 or the connecting piece 133. The positioning screw 134A comprises a threaded section and a fulcrum at its end configured to be connected to the lever arm 132.

[0025] The lever mechanism 130 of the figures comprises a linear controller 136 configured to control the sealing 120 linearly towards the structure 10-B below the fire door 10. The linear controller 136 of the lever mechanism 130 is connected to the frame part 110. The linear controller 136 of the lever mechanism is directed towards the structure 10-B below the fire door 10. The linear controller 136 of the lever mechanism 130 is connected in a pivoted manner to the sealing 120 thus allowing the rotation of the sealing around the pivoting. Said pivoting enables the pressing of the sealing suitable against the floor structure below the fire door even though the floor structure were oblique in relation to the sealing.

[0026] The linear controller 136 of the lever mechanism 130 of the figures comprises a male connector 136-A and a female connector 136-B corresponding to it. The male connector 136-A and the female connector 136-B are configured to move linearly in relation to each other. The male connector 136-A is e.g. a shaft, a pin or an arm-like piece. The female connector 136-B is e.g. a socket part or a corresponding piece corresponding to the male connector 136-A. The connection of the linear controller 136 may be formed e.g. such that the female connector 136-B is connected to the frame part 110 and the male connector 136-A is connected to the sealing 120, or in more detail, the male connector 136-A is connected to the sealing frame part 122 of the sealing 120. Alternatively, the connection of the linear controller 136 may be implemented such that the female connector 136-B is connected to the sealing 120 and the male connector 136-A is connected to the frame part 110.

[0027] The linear controller 136 of the lever mechanism 130 is connected in a pivoted manner to the sealing 120 thus allowing the sealing 120 to rotate around the pivoting and controlling the sealing 120 via a pivot point linearly towards the structure 10-B below the fire door 10. The linear controller 136 comprises a connecting piece 137 for forming a pivoted connection between the sealing 120 and said linear controller 136. Said connecting piece 137 is configured to allow the rotation of the sealing 120 around said connecting piece 137. Said connecting piece 137 may be connected e.g. directly to the sealing 120. Said connecting piece 137 may be connected to the sealing 120 by means of a spacing piece 137-B arranged to it. Said connecting piece 137 may be e.g. a pin thus being connected to said male connector 136-A. The sealing 120 rotates around a longitudinal axis formed by the connecting piece 137. Said connecting piece 137 may be alternatively called e.g. a first connecting piece 137, a pivoting piece 137 or a connecting part 137.

[0028] Furthermore, the linear controller 136 of the lever mechanism 130 is connected to the sealing 120 at a specific distance from its vertical middle line, the specific distance being less than 25 per cent of the length of the sealing 120. Said specific distance may be less than 20 per cent. Said specific distance may be less than 10 per cent. The length of the sealing 120 refers to the longitudinal length of the sealing 120. The length of the sealing 120 and the width of the fire door 10 may be e.g. almost equal.

[0029] The linear controller 136 of the lever mechanism 130 of the figures is connected to a lever arm 132. The linear controller 136 of the lever mechanism 130 is connected in a manner allowing pivoting to the lever arm 132 thus allowing the lever arm 132 to rotate around the pivoting. The lever arm 132 is configured to control the linear controller 136.

[0030] Furthermore, the lever mechanism 130 comprises a connecting piece 138 for forming a connection between the linear controller 136 and the lever arm 132. Said connecting piece 138 is connected to the linear controller 136. In more detail, the connecting piece 138 is connected to the male connector 136-A. The connecting piece 138 is configured to slide along the lever arm 132. Additionally, the connecting piece 138 is configured to slide along the lever arm 132. The lever arm 132 comprises a groove 132-A along which the connecting piece 138 is arranged to slide. Said connecting piece 138 may be alternatively called e.g. a second connecting piece 138.

[0031] The lever mechanism 130 of the figures is connected to a controller 140. Said connection may be implemented by means of a connecting piece 149 of the controller 140, which connecting piece 149 of the controller 140 will be described later in more detail. The controller 140 is configured to slide along the lever arm 132. The lever mechanism 130 comprises a groove 132B for connecting the controller 140 to the lever mechanism 130. More specifically, the lever arm 132 of the lever mechanism 130 comprises the groove 132B for connecting the controller 140 to the lever arm 132.

[0032] The controller 140 of the figures comprises a guide part 142 being connected and / or integrated to the structure 10-B below the fire door. For example in the figures, the guide part 142 is connected to the structure 10-B below the fire door by means of connecting elements 143. The guide part 142 comprises a first planar surface 142A and a second planar surface 142B diverging from the first planar surface. The first planar surface 142A may be located e.g. at the end of the guide part 142. The second planar surface 142B may be located e.g. in an area between the ends of the guide part 142. By means of a difference in height of the first planar surface 142A and the second planar surface 142B, it is possible to determine a vertical offset of the sealing 120. The guide part 142 is in other words a guide bar 142.

[0033] The controller 140 of the figures comprises an arm part 144 connected to the lever mechanism 130. The arm part 144 is connected to the lever mechanism 130 thus allowing the rotation of the lever mechanism or, in other words, the arm part 144 is connected to the lever mechanism 130 in a manner allowing the rotation of the lever mechanism 130. The arm part 144 of the figures is connected to the lever mechanism 130 such that the arm part 144 and the lever mechanism 130 rotate in relation to each other but, alternatively, the arm part 144 may be connected to the lever mechanism fixedly or, in other words, rigidly e.g. by means of connecting elements. The arm part 144 is configured to extend to the first planar surface 142A of the guide part 142 thus determining a first position 130-A of the lever mechanism or, in other words, determining the lever mechanism its first position 130-A. Furthermore, the arm part 144 is configured to extend to the second planar surface 142B of the guide part 142 thus determining a second position 130-B of the lever mechanism 130 or, in other words, determining the lever mechanism 130 its second position 130-B.

[0034] In addition, the arm part 144 of the controller 140 comprises a length-adjustment mechanism 144A for adjusting the length of the arm part 144. By adjusting the length of the arm part 144, it is possible to change the first position 130-A and / or the second position 130-B of the lever mechanism 130. The length-adjustment mechanism 144A may be e.g. an adjusting screw which extends to a threaded hole 144B arranged to the arm part. The length of the arm part 144 may be changed by turning the adjusting screw in relation to the threaded hole.

[0035] Additionally, the arm part 144 of the controller 140 comprises a roll 144C for rolling the arm part 144 along the guide part 142. The roll 144C may be fastened to the arm 144 e.g. by means of a bolt joint. The roll 144C is arranged at the end of the length-adjustment mechanism 144A. The roll 144C is configured to extend against the guide part 142. In more detail, the roll 144C is configured to extend to the first planar surface 142A of the guide part 142. Furthermore, the roll 144C is configured to extend to the second planar surface 142B of the guide part 142. The roll 144C is connected to the end corresponding to the guide part 142.

[0036] The controller 140 of the figures comprises a linear controller 146 configured to form a linear movement for the arm part 144 directed towards the guide part 142. The linear controller 146 is connected to the frame part 110. The linear controller 146 may be connected to the frame part 110 e.g. directly or indirectly via a spacing piece 133. The linear controller 146 may be integrated to e.g. the spacing piece 133 comprising an opening along which the arm part 144 is configured to slide linearly. The linear controller 146 may be a piece arranged to the frame part 110, along which piece, the arm part 144 is configured to slide. The linear controller 146 comprises an opening for receiving the arm part 144. The arm part 144 is configured to slide along the opening of the linear controller 146. The gap between the arm part 144 and the linear controller 146 is configured such that the arm part 144 slides along the opening of the linear controller 146.

[0037] The controller 140 of the figures comprises a connecting piece 149 for connecting the controller 140 to the lever mechanism 130. The connecting piece 149 is configured to slide along the lever mechanism 130 and / or the arm part 144 of the controller 140. The connecting piece 149 form a connection between the lever mechanism 130 and the controller 140 such that the lever mechanism 130 may rotate. The connecting piece 149 of the figures is a pin which is fastened to the arm part 144 of the controller 140 and which pin slides along the groove 132B of the lever mechanism 130. Said connection may be implemented alternatively e.g. such that the connecting piece 149 is a pin which is fastened to the lever mechanism and which pin slides along a groove arranged to the lever mechanism, wherein said connection is not shown in the figures.

[0038] As already mentioned above, the spring element 150 keeps the sealing 120 against the structure 10-B below the fire door 10 when the lever mechanism 130 is in its first position 130-A. When the rail vehicle moves, various vibrations and forces are conveyed to the sealing arrangement 1. An advantage of the sealing arrangement is that the spring element 150 keeps the sealing 120 against the structure 10-B below the fire door 10 despite vibrations, which may decrease e.g. the wear and tear of the sealing.

[0039] The spring element 150 of the figures is configured to form force for keeping the lever mechanism 130 in its first position 130-A. The spring element 150 keeps the lever mechanism 130 in its first position such that the spring element 150 presses the arm part 144 of the controller 140 against the guide part 142 of the controller 140. The spring element 150 is configured to form force for keeping the lever mechanism 130 in its second position 130-B. The spring element 150 keeps the lever mechanism 130 in its second position such that the spring element 150 presses the arm part 144 of the controller 140 against the guide part 142 of the controller 140.

[0040] Furthermore, the spring element 150 is configured to bring the arm part 144 against the guide part 142. The spring element 150 is in connection with the arm part 144 via the lever mechanism 130 for guiding the arm part 144 against the guide part 142. In more detail, the spring element 150 is in connection with the arm part 144 via the lever arm 132 of the lever mechanism 130 for guiding the arm part 144 against the guide part 142.

[0041] The spring element 150 of the figures is configured in its longitudinal direction towards the connection between the lever mechanism 130 and the sealing 120. In more detail, the spring element 150 is configured towards the above-mentioned first connecting piece 137 of the lever mechanism 130.

[0042] The spring element 150 of the figures is a coil spring. One end of the coil spring is against the frame part 110. One end of the coil spring is against the lever mechanism 130. The coil spring is installed around the linear controller 136 of the lever mechanism 130.

[0043] In an embodiment not shown in the figures, the spring element 150 is a torsion spring which is arranged in connection with the connection between the lever mechanism 130 and the frame part 110.

[0044] The sealing arrangement 1 of the figures comprises adapter plates 114 for forming a suitable clearance between the sealing 120 and the frame part 110. The adapter plates 114 are arranged to the frame part 110. The adapter plates 114 are located in an area between the side plates 112 of the frame part 110 and the side walls 126 of the sealing frame part 112.

[0045] The controller 140 of the sealing arrangement 1 of the figures comprises a protection piece 145. The protection piece 145 surrounds the arm part 144 partially. The protection piece 145 is configured to extend close to the guide part 142 or against the guide part 142. The protection piece 145 comprises a sealing 145B which extends against the guide part 142. For its part, said protection piece 145 forms a sealing below the controller 140 of the guide part. The protection piece 145 is connected to the above-mentioned spacer piece 133.

[0046] Those skilled in the art will find it obvious that, as technology advances, the basic idea of the invention may be implemented in many different ways. The invention and its embodiments are thus not restricted to the above-described examples but may vary within the scope of the claims.

Claims

1. A sealing arrangement (1) for a fire door (10), wherein the sealing arrangement (1) comprises a frame part (110) to be connected or integrated in a lower part (10-A) of the fire door (10), a sealing (120) for sealing a gap between the fire door (10) and the structure (10-B) below it in a closed position (11-A) of the fire door (10), a lever mechanism (130) for moving the sealing (120) in relation to the frame part (110), wherein the lever mechanism (130) is connected to the frame part (110) and the sealing (120), and wherein the lever mechanism (130) comprises a first position (130-A) for positioning the sealing (120) against the structure (10-B) below the fire door (10) and a second position (130-B) for positioning the sealing (120) apart from the structure (10-B) below the fire door (10), a controller (140) for controlling the lever mechanism (130) to its first position (130-A) when the fire door (10) is in the closed position (11-A) and to its second position (130-B) when the fire door (10) is in the open position (11-B), and a spring element (150) for keeping the sealing (120) against the structure (10-B) below the fire door (10) when the lever mechanism (130) is in its first position (130-A), and which controller (140) comprises a guide part (142) being connected and / or integrated to the structure (10-B) below the fire door (10), which guide part (142) comprises a first planar surface (142A) and a second planar surface (142B) diverging from the first planar surface, and an arm part (144) connected to the lever mechanism (130) and thus being configured to extend to the first planar surface (142A) of the guide part (142) thus determining the first position (130-A) of the lever mechanism and to the second section (142B) thus determining the second position (130-B) of the lever mechanism, and wherein the sealing arrangement's (1) spring element (150) is configured to bring the arm part (144) against the guide part (142).

2. A sealing arrangement (1) according to claim 1, wherein the controller (140) further comprises a linear controller (146) configured to form for the arm part (144) a linear motion directed at the guide part (142), wherein the linear controller (146) is connected to the frame part (110), and wherein the arm part (144) is connected to the lever mechanism (130) in a manner that allows the rotation of the lever mechanism (130).

3. A sealing arrangement (1) according to claim 1 or 2, wherein the arm part (144) of the controller (140) comprises a length-adjustment mechanism (144A) for adjusting the length of the arm part (144).

4. A sealing arrangement (1) according to any one of the preceding claims, wherein the sealing (120) comprises a sealing frame part (122) and a sealing part (124) arranged to it for corresponding to the structure (10-B) below the fire door (10).

5. A sealing arrangement (1) according to any one of the preceding claims, wherein the lever mechanism (130) comprises a linear controller (136) configured to control the sealing (120) linearly towards the structure (10-B) below the fire door (10), wherein the linear controller (136) of the lever mechanism (130) is connected to the frame part (110), and wherein the linear controller (136) of the lever mechanism (130) is connected in a pivoted manner to the sealing (120) thus allowing the sealing (120) to rotate around the pivoting.

6. A sealing arrangement (1) according to claim 5, wherein the linear controller (136) of the lever mechanism (130) is connected to the sealing (120) at a specific distance from its vertical middle line, the specific distance being less than 25 per cent of the length of the sealing (120).

7. A sealing arrangement (1) according to claim 5 or 6, wherein the lever mechanism (130) comprises a lever arm (132) connected to the frame part (110), the controller (140) and the linear controller (136) of the lever mechanism (130).

8. A sealing arrangement (1) according to any one of claims 5-7, wherein the lever mechanism (130) comprises a positioning mechanism (134A) forming a positionable connection between the lever arm (132) and the frame part (110).

9. A sealing arrangement (1) according to any one of the preceding claims, wherein the spring element (150) is a coil spring.

10. A sealing arrangement (1) according to any one of the preceding claims, wherein the spring element (150) is arranged in its longitudinal direction towards the connection between the lever mechanism (130) and the sealing (120).

11. A sealing arrangement (1) according to any of the preceding claims, wherein the spring element (150) is connected to the lever mechanism (130) and the frame part (110).

12. A sealing arrangement (1) according to any one of the preceding claims, wherein the fire door (10) is a linearly controllable fire door (10).

13. A rail vehicle (20) which comprises at least one carriage travelling on rails, at least one fire door (10) arranged to the carriage and a sealing arrangement (1) according to any one of claims 1-12 arranged to the fire door (10).

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