Shutter device with re-inserting element
The invention relates to a shutter device intended to close a bay ( 11 ) or other opening and able to experience a downwards and upwards movement, the shutter ( 1 ) having flexible lateral edges ( 5, 6 ) projecting with respect to the plane of the shutter ( 1 ) and roughly continuous running in guideways ( 7, 8 ) mounted on a fixed support ( 9 ), means being provided, at least in the region of the lower part of the bay ( 11 ) or the said other opening, for allowing the projecting lateral edges ( 5, 6 ) to disengage from their guideways ( 7, 8 ) as soon as a certain tensile force transverse to the longitudinal direction of the guideways ( 7, 8 ) is exerted on these edges ( 5, 6 ), reintroduction means being provided so as to allow the lateral edges ( 5, 6 ) to engage once again in the upper part of the guideways ( 7, 8 ) during the upwards movement of the shutter ( 1 ), this device being characterized in that the said reintroduction means comprise guide members ( 20 ) provided facing the guideways ( 7, 8 ) so as to divert the edges ( 5, 6 ) of the shutter ( 1 ) into the guideways ( 7, 8 ) during the upwards movement of the shutter ( 1 ).
1. Shutter device intended to close an opening ( 11 ) or other aperture and able to undergo a downwards and upwards movement, the shutter ( 1 ) having substantially continuous flexible lateral edges ( 5 , 6 ) that project with respect to the plane of the shutter ( 1 ) and that are running in guideways ( 7 , 8 ) mounted on a fixed support ( 9 ),
means being provided, at least at the lower part of the opening ( 11 ) or other aperture, for allowing the lateral edges ( 5 , 6 ) to disengage from their guideways ( 7 , 8 ) when a certain tensile force transverse to the longitudinal direction of the guideways ( 7 , 8 ) is exerted on the lateral edges ( 5 , 6 ),
reintroduction means being provided to engage the lateral edges ( 5 , 6 ) again in the upper part of the guideways ( 7 , 8 ) during the upwards movement of the shutter ( 1 ), whereby said reintroduction means comprise guide members ( 20 ) provided facing the guideways ( 7 , 8 ) so as to divert the edges ( 5 , 6 ) of the shutter ( 1 ) into the guideways ( 7 , 8 ) during the upwards movement of the shutter ( 1 ),
wherein the guideways ( 7 , 8 ) are interrupted between the upper part of the guideways ( 7 , 8 ) and the lower part of the guideways ( 7 , 8 ) whereby the lower end of the upper part of the guideway ( 7 , 8 ) is mounted movable with respect to the lower part of the guideway ( 7 , 8 ) such that, during the upwards movement of the shutter ( 1 ) when the corresponding lateral edge ( 5 , 6 ) thereof is disengaged from the lower part of the guideway ( 7 , 8 ), said upper part moves as a result of the action, of the lateral edge of the shutter.
2. Device according to claim 1 , characterized in that the guide members ( 20 ) have a fixed position with respect to the upper part of the guideways ( 7 , 8 ).
3. Device according to claim 1 or 2 , characterized in that the distance between the guide members ( 20 ) located on either side of the plane of the shutter ( 1 ) is greater than the thickness of the shutter ( 1 ) near the lateral edges ( 5 , 6 ), whereby this distance is inferior to the thickness of the lateral edge ( 5 , 6 ) of the shutter ( 1 ).
4. Device according to claim 1 , characterized in that at least the lower end of the upper part of the guideway ( 7 , 8 ) is mounted elastically with respect to the fixed support ( 9 ) on which the guideway ( 7 , 8 ) is mounted.
5. Device according to claim 1 , characterized in that the guideways ( 7 , 8 ) are mounted on the support ( 9 ) elastically and/or with pivoting about an axis substantially parallel to their longitudinal axis.
6. Device according to claim 1 , characterized in that the guide members ( 20 ) and the upper part of the guideways ( 7 , 8 ) are mounted on a separate chassis ( 27 ).
7. Device according to claim 6 , characterized in that the chassis ( 27 ) is provided with a lug ( 48 ) at its upper end, resting against the aforementioned support ( 9 ) so that the position of the part of the guideways ( 7 , 8 ) at the location of this lug ( 48 ) is practically unvarying.
8. Device according to claim 6 or 7 , characterized in that the chassis ( 27 ) has a lip ( 40 ) at its lower end, extending along the upper end of the lower part of the guideways ( 7 , 8 ) so that this lower part can be fixed to the chassis ( 27 ) by means of this lip ( 40 ) in the continuation of the upper part of the guideways ( 7 , 8 ).
9. Device according to claim 6 or 7 , characterized in that the chassis ( 27 ) has a U-section and surrounds the upper part of the corresponding guideway ( 7 , 8 ).
10. Device according to claim 1 , characterized in that it comprises, for each of the guideways ( 7 , 8 ), a switch ( 47 ) mounted on the fixed support ( 9 ) thereof, near the guide members ( 20 ), this switch ( 47 ) being arranged in such a way as to generate a signal during a displacement, under the action of the shutter ( 1 ), of the guideways ( 7 , 8 ) at the location of this switch ( 47 ).
11. Device according to claim 10 , characterized in that slowing means are provided, collaborating with the aforesaid switch ( 47 ) so as to slow the upwards movement of the shutter ( 1 ) when a signal is generated by the switch ( 47 ).
12. Device according to claim 1 , characterized in that a buffer ( 25 ) is provided at the lower part of the shutter ( 1 ), this buffer ( 25 ) collaborating with a stop ( 26 ) provided at the upper part of the guideways ( 7 , 8 ) so as to guarantee that the lower end of the lateral edges ( 5 , 6 ) of the shutter ( 1 ) cannot be moved upwards beyond the guide members ( 20 ).
13. Device according to claim 1 , characterized in that a buffer ( 50 ) is provided at the upper part of the shutter ( 1 ), this buffer collaborating with a stop ( 26 ) provided at the upper part of the guideways ( 7 , 8 ), in such a way that, when the buffer ( 50 ) rests against the stop ( 26 ), the shutter ( 1 ) is in its closed position.
14. Device according to claim 13 , characterized in that the buffer ( 50 ) is provided near the lateral edge ( 5 , 6 ) of the shutter ( 1 ).
15. Device according to claim 1 , characterized in that it comprises drive means for moving the shutter ( 1 ) in a downwards and upwards movement between the closed position and the open position and for forming a loop ( 49 ) in the shutter ( 1 ) over the guideways ( 7 , 8 ) when the shutter ( 1 ) is in its closed position, the shutter ( 1 ) resting, at the location of this loop ( 49 ), against a wall ( 10 ) above the opening ( 11 ) or other aperture, sealing between the shutter ( 1 ) and this wall ( 10 ).
16. Device according to claim 1 , characterized in that the guide members ( 20 ) comprise at least two successive rests ( 21 , 22 , 23 , 24 ) distributed over a certain distance along the upper part of the guideways ( 7 , 8 ), one of these rests ( 21 , 22 ) being situated facing the point of introduction ( 19 ) of the lateral edges ( 5 , 6 ) of the shutter ( 1 ) into the guideways ( 7 , 8 ), the other rest ( 23 , 24 ) being provided at the upper end of these guideways ( 7 , 8 ).
17. Device according to claim 1 , characterized in that the guideways ( 7 , 8 ) have an accessway ( 19 ) facing the guide members ( 20 ) and through which the corresponding lateral edge ( 5 , 6 ) of the shutter ( 1 ) when this has disengaged from the guideways ( 7 , 8 ) can be reintroduced thereinto.