Patent ID: 9656106
Date: 2017-05-23
CPC Classifications: A62B

Claim:
1. An emergency oxygen supply device for aircraft inhabitants, comprising: an oxygen source, an oxygen mask connected via an oxygen line to said oxygen source, a container, wherein said oxygen mask is positioned inside said container, a releasable cover lid mounted to the container to close an opening of said container in a closed position of said cover lid and to open said opening in an open position, a latch mechanism mounted to said container, said latch mechanism comprising a latch which is switchable from a blocking position wherein said latch holds said cover lid in the closed position to a release position wherein said latch frees the cover lid to move into the open position, wherein the latch mechanically obstructs the cover lid in the blocking position and does not mechanically obstruct the cover lid in the open position, wherein said latch mechanism comprises a permanent magnet interacting with a magnetisable element and exerting a magnetic holding force onto said magnetisable element to hold said latch in the blocking position, wherein a solenoid is positioned adjacent to the permanent magnet, said solenoid being connected to a control unit, said control unit being adapted to receive an opening signal and to provide a current flowing through said solenoid in response to said opening signal, wherein said solenoid is arranged and dimensioned such that the current flowing through said solenoid reduces said magnetic holding force to such a level that the latch is released from the blocking position into the release position, wherein the latch further comprises a locking element with two legs which define a recess, a lower leg of the two legs having a bottom face which is oriented oblique to a direction of movement of the cover lid for providing a wedge-like effect onto a locking lever, wherein the locking lever is pivotally mounted in a pivotal coupling to a projection that is integral with the cover lid, a spring being arranged around said pivotal coupling to force said locking lever in a clockwise or counterclockwise direction, and further comprising a reset pin which is connected to the cover lid and extends from the cover lid toward the latch, an upper end of the reset pin being arranged opposite a reset face of the latch, wherein the reset pin is arranged to come into contact with said reset face of the latch when the latch is in the release position the cover lid and is moved from the open position into the closed position, such that the latch moves from the release position to the blocking position when the cover lid is moved from the open position to the closed position.