| CPC E06B 7/21 (2013.01) [E06B 3/469 (2013.01); E06B 7/20 (2013.01); E05Y 2800/672 (2013.01)] | 20 Claims |
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1. A door comprising:
a door frame or door fixture comprising at least one abutment element;
a door leaf, movable from an open position in which the door leaf opens an opening delimited by said door frame or door fixture, and a closed position in which the door leaf rests against said at least one abutment element of said door frame or door fixture to close said opening;
at least one seat provided in said door leaf or in said door frame or door fixture;
a seat wall delimiting said seat;
at least one guillotine, said guillotine being slidably accommodated in said seat to pass from a retracted position to an extended position and vice versa along a guillotine sliding direction (X-X);
at least one first magnet with poles aligned or parallel to said guillotine sliding direction (X-X);
said at least one first magnet being arranged integral with said guillotine;
said at least one first magnet exerting a magnetic action of attraction of said guillotine into said seat;
at least one second magnet, separated from said at least one first magnet, with poles aligned or parallel to said guillotine sliding direction (X-X);
said at least one second magnet being arranged integral with said guillotine;
at least one second magnet interaction element, separated from said at least one first magnet and said at least one second magnet, configured to interact with said at least one second magnet and arranged integral with said at least one abutment element to attract said at least one second magnet and exert an action of extraction on the guillotine;
said at least one second magnet being configured to push and extract said guillotine from said seat only when either (i) said at least one second magnet is arranged facing said at least one second magnet interaction element and/or (ii) when said guillotine sliding direction (X-X) intercepts said at least one second magnet interaction element;
wherein said at least one first magnet exerts a magnetic action lower than the magnetic action exerted by said at least one second magnet;
further comprising:
at least one third magnet arranged integral with said seat wall, said at least one first magnet always facing said at least one third magnet to perpectually attract said guillotine into said seat, or
further comprising at least one electromagnet or magnetic field closing element arranged integral with said seat wall, said at least one first magnet always facing said at least one electromagnet or magnetic field closing element so as to attract said guillotine into said seat, and/or
wherein said at least one second magnet interaction element is an electromagnet, separated from said at least one first magnet and said at least one second magnet, configured to interact with said at least one second magnet and arranged integral with said at least one second magnet and arranged integral with said at least one abutmet element to attract said at least one second magnet to exert an action of extraction on the guillotine, said at least one second magnet being configured to push and extract said guillotine from said seat only when either (i) said at least one second magnet is arranged facing said at least one second magnet interaction element and/or (ii) said guillotine sliding direction (X-X) intercepts said at least one second magnet interaction element;
wherein the action of attraction between said at least one second magnet and said second magnet interaction element overcomes the force of action of said at least one first magnet towards said at least one third magnet or said electromagnet or said magnetic field closing element, thus allowing the extension of said guillotine and the complete resting thereof on a floor, ensuring the closing of a horizontal gap below said door leaf.
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