Explosion resistant window device and a structure provided with such a window device

Abstract

A window device comprising: a window, window frame, a window holder element, to which the window is attached along a periphery of the window, a window-motion dampening element, and a coupling device via which the window holder element is in engagement with the window frame. The coupling device comprises a projection and a guide recess and is arranged at the inner periphery of the window frame and, from a normal operation position of window, it allows motion of the window holder element in a first direction in which the window holder element is arranged to compress and deform the dampening element, but prevents the window holder element from moving in an opposite second direction.

Claims

1. A window device comprising: a window, window frame, a window holder element, to which the window is attached along a periphery of the window, a window-motion dampening element, and a coupling device via which the window holder element is in engagement with the window frame, wherein the dampening element is arranged between window holder element and the window frame and is arranged to be compressed and deformed by the window holder element upon motion of the window and the window holder element in a first direction, which is perpendicular to the main extension plane of the window, wherein the coupling device comprises a guide recess arranged in a first of an inner periphery of the window frame and the window holder element, said guide recess being elongated and extending in its longitudinal direction in said first direction, and a projection attached to a second of said inner periphery of the window frame and the window holder element, wherein the projection extends into the guide recess and is able of sliding in the guide recess in said first direction or a second direction opposite to the first direction, and that, in a normal operation position of the window in which the dampening element is not compressed and is positioned between the window holder element and the window frame, the projection of the coupling device is located at a first end of the guide recess, such that motion of the window holder element in the second direction is prevented but motion of the window holder element in the first direction is allowed by the coupling device.

2. A window device according to claim 1, wherein the window holder element has a first leg and a second leg that render the window holder element an L-shaped cross-section, the first leg of the L-shaped window holder element extends along and opposite to an inner periphery of the window frame, wherein one of said guide recess and said projection is arranged in or attached to said first leg, the second leg of the L-shaped window holder element extends along and opposite to a front side of the window frame, and wherein the dampening element is arranged between the second leg of the L-shaped window holder element and the front side of the window frame and is arranged to be compressed and deformed by the second leg of the window holder element upon motion of the window and the window holder element in said first direction.

3. A window device according to claim 1 wherein the dampening element has a maximum deformation length A in said first direction and that the projection has a maximum motion distance B in the guide recess from said first end of the guide recess to an opposite second end thereof, and that A<B.

4. A window device according to claim 2, wherein the window is attached by means of an adhesive to a side of the second leg of the window holder element which is opposite to a side of said second leg that is turned towards the damping element.

5. A window device according to claim 2, wherein the guide recess of the coupling device is an elongated slot arranged in the first leg of the window holder element.

6. A window device according to claim 5, wherein the window frame comprises a hole for receipt of the projection and that the projection of the coupling device is a bolt or pin which extends through the guide recess and into said hole.

7. A window device according to claim 1, further comprising a plurality of coupling devices provided along a circumference of the window frame.

8. A window device according to claim 7, wherein the window frame, as seen in said first direction, is a polygon, and that there is provided at least one respective coupling device in the region of each corner of the polygon.

9. A window device according to claim 7, wherein the window frame, as seen in said first direction, is a polygon, and that on opposite sides of each corner of the polygon there is provided a coupling device that is closer to said corner than to a neighbouring corner.

10. A structure comprising a wall, said wall being provided with an opening therein, and wherein the structure comprises a window device according to claim 1 provided in said opening, and that the window frame is fixedly attached to said wall.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Exemplifying embodiments of the present invention will be presented in the following detailed description with reference to the annexed drawing, on which,

(2) FIG. 1 is a cross section of a part of a structure provided with a window device according to the invention as seen from above, and

(3) FIG. 2 is a cross section of parts of a window device as seen in a direction indicated with II-II in FIG. 1.

DETAILED DESCRIPTION

(4) FIG. 1 shows a part of a structure comprising a wall 1 which comprises an opening into which a window device according to the present invention is fitted and mounted.

(5) The window device comprises a window 2, a window frame 3, a window holder element 4, to which the window 2 is attached along a periphery of the window 2. The window device further comprises a window-motion dampening element 5, and a coupling device 6 via which the window holder element 4 is in engagement with the window frame 3. The window holder element 4 has a first leg 7 and a second leg 8 that render the window holder element 4 an L-shaped cross-section. The first leg 7 of the L-shaped window holder element 4 extends along and opposite to an inner periphery of the window frame 3. The second leg 8 of the L-shaped window holder element 4 extends along and opposite to a front side of the window frame 3. The dampening element 5 is arranged between the second leg 8 of the L-shaped window holder 4 and the front side of the window frame 3 and is arranged to be compressed and deformed by the second leg 8 of the window holder element 4 upon motion of the window 2 and the window holder element 4 in a first direction, which is perpendicular to the main extension plane of the window 2.

(6) The window 2 comprises a sheet of laminated glass. In the embodiment described here, the window is a planar sheet. However, it should be understood that also non-planar shapes, such as a convex window shape, are conceived.

(7) The window frame 2 is formed by a metal profile attached to the inner periphery of an opening in the wall 1. In the embodiment shown, the metal profile is a tube having a square cross-section, as can be seen in FIG. 1. Other frame designs are also conceivable.

(8) The window holder element 3 is formed by lathes that have an L-shaped cross-section and that extend around the outer periphery of the window 2. The lathes may be connected to each other, for example by welds, in the corner regions of the window. The window holder element 3 may, off course, also be constituted by a continuous lathe extending around the outer periphery of the window 2. The window 2 is attached by means of an adhesive to a side of the second leg 8 of the window holder element 4 which is opposite to a side of said second leg 8 that is turned towards the damping element 5.

(9) The coupling device 6 comprises a guide recess 9 arranged in the first leg 7 of the window holder element 4. The guide recess 9 is elongated and extends in its longitudinal direction in said first direction. The coupling device 6 further comprises a projection 10, here formed by a bolt 10, attached to the inner periphery of the window frame 3, wherein the projection 10 extends into the guide recess 9 and is able of sliding in the guide recess 9 in said first direction or a second direction opposite to the first direction as the window holder element 4 is moved in the first or second direction in relation to the window frame 3. The guide recess 9 forms a slot in the first leg 7 such that the projection formed by the bolt 10 can be screwed into a receiving hole in the inner periphery of the window frame 3 by being inserted through the recess 9 from the inner periphery of the first leg 7, i.e. the side opposite the side of the first leg that is directed towards the adjacent inner periphery of the window frame 3. In other words, the bolt 10 is attached to the window frame 3 by being in engagement with the window frame 3 through a threading in a receiving hole in the window frame.

(10) FIG. 1 shows a normal operation position of the window 2 in which the dampening element 5 is not compressed and is positioned between the second leg 8 of the window holder element 4 and the window frame 3. In this position of the window 2, the projection 10 of the coupling device 6 is located at a first end of the guide recess 9, such that motion of the window holder element 4 in the second direction is prevented but motion of the window holder element 4 in the first direction is allowed by the coupling device 6. There is a small gap between the second leg 8 of the window holder element 4 and the dampening element 5 as seen in said first direction, which is for tolerance reasons, to ensure that the bolt 10 is enabled to be screwed into the receiving hole provided in the window frame 3 without being hindered due to, for example, the dampening element being slightly thicker than expected somewhere along the circumference of the window frame. The gap may preferably be filled with a suitable sealing mass or element (not shown), and should be small in order to minimize possible motion of the window in the first direction without deformation of the dampening element 5.

(11) FIG. 2 shows a cross-section of the window frame 3, the window holder element 4 as seen in the first direction and according to II-II in FIG. 1. FIG. 1, on its hand, shows a cross-section according to I-I in FIG. 2. As can be seen in FIG. 2, the window frame 3, as seen in said first direction, is a polygon, in this case a rectangle. On opposite sides of each corner 11 of the polygon there is provided a coupling device 6 that is closer to said corner than to a neighbouring corner.

(12) The invention is not, however, restricted to only polygonal windows and window frames. It should be understood that also other shapes, such as oval or circular shapes, may be conceived.