Emergency oxygen device with improved activation lanyard arrangement

Abstract

The invention relates to an emergency oxygen device for passenger of an air-craft, comprising a chemical oxygen generator including a chemical oxygen source and an activation unit for initiating a chemical reaction of said chemical oxygen source producing oxygen, at least two oxygen masks each connected with the chemical oxygen generator for receiving an oxygen fluid flow from said chemical oxygen generator after said activation unit has initiated the chemical reaction, a mechanical activation assembly for activating the activation unit. According to the invention the activation unit is activated by a mechanical force exerted onto an activation element of the activation unit and the mechanical activation assembly comprises for each of the said at least two oxygen masks a first mechanical connection from the activation element to a fixation element releasably mounted to said emergency oxygen device and a second mechanical connection from said fixation element to said oxygen mask.

1 . An emergency oxygen device for passenger of an aircraft, comprising:
 a chemical oxygen generator including a chemical oxygen source and an activation unit for initiating a chemical reaction of said chemical oxygen source producing oxygen,   at least two oxygen masks each connected with the chemical oxygen generator for receiving an oxygen fluid flow from said chemical oxygen generator after said activation unit has initiated the chemical reaction,   a mechanical activation assembly for activating the activation unit   
       characterized in that the activation unit is activated by a mechanical force exerted onto an activation element of the activation unit and that the mechanical activation assembly comprises for each of the said at least two oxygen masks
 a first mechanical connection from the activation element to a fixation element releasably mounted to said emergency oxygen device and 
 a second mechanical connection from said fixation element to said oxygen mask. 
 
     
     
         2 . Emergency oxygen device according to  claim 1 ,
 wherein said fixation element is releasably mounted to a casing wherein said chemical oxygen generator and the oxygen masks are stored in a non-emergency situation and the oxygen masks can fall out in an emergency situation and wherein said releasably mounting of said fixation element is effected by a form locking effect and/or a frictional force.   
     
     
         3 . Emergency oxygen device according to  claim 1 ,
 wherein said fixation element is a plug inserted in an opening of the casing and held in said opening by an elastic force exerted by an annular elastic ring element   
     
     
         4 . Emergency oxygen device according to  claim 1 ,
 wherein said first mechanical connection comprises
 a single first elongate element having two ends, the first end being coupled to the activation element and the second end being fixed inside a casing wherein said chemical oxygen generator and the oxygen masks are stored in a non-emergency situation, and 
 a second elongate connecting element for each oxygen mask, wherein each of said second elongate connecting elements has a first end coupled to said first elongate element and a second end coupled to said releasable fixation element. 
   
     
     
         5 . Emergency oxygen device according to  claim 1 ,
 wherein said first and/or said second mechanical connection and said first and/or said second elongate elements, respectively is a line, a cable or a wire.   
     
     
         6 . Emergency oxygen device according to  claim 4 ,
 wherein said first ends of the second elongate elements are coupled to said first elongate element at positions in distance from each other along said first elongate element.   
     
     
         7 . Emergency oxygen device according to  claim 4 ,
 wherein the first end of the first elongate element is coupled to said activation element at one end of the chemical oxygen generator and said second end of the first elongate element is fixed to the opposed, second end of the chemical oxygen generator thus the first elongate element extending along the length of the chemical oxygen generator.   
     
     
         8 . Emergency oxygen device according to  claim 1 ,
 wherein in a casing a number of three oxygen masks and said chemical oxygen generator are stored in a non-emergency situation and a number of three releasable fixation elements are mounted at said casing, in particular in a wall of said casing, each fixation element is connected via a cable, wire or the like to an activation line coupled to said activation element and each fixation element is further connected via a cable, wire or the like to a respective oxygen mask of said three oxygen masks.