A self latching magnetic latching device

E - Fixed Constructions – 05 – C

Patent

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Details

E05C 19/16 (2006.01) E05B 55/00 (2006.01) E05B 65/00 (2006.01)

Patent

CA 2088680

A self latching device (10) is disclosed which is arranged to latch in a predetermined position, two members (11, 12) which are otherwise movable relative to each other. The device comprises a latch arm (38) arranged to be mounted to one of the members and which is movable between a latched and a retracted position, and a retaining element (30) incorporating a permanent magnet (23) arranged to be mounted to the other member. The latch arm is spring biased into the retracted position but when in the predetermined position, is caused to move by the magnetic field generated by the magnet (23) into the latched position wherein any substantial relative movement of the two members is prevented by the latch arm (38) engaging the retaining element (30).

Un dispositif de verrouillage automatique (10) est décrit, lequel est conçu pour verrouiller, en une position prédéterminée, deux éléments (11, 12) normalement mobiles l'un par rapport à l'autre. Le dispositif comprend un bras de verrouillage par laquet (38), agencé de manière à être monté sur l'un des éléments et qui peut se déplacer entre une position verrouillée et une position rentrée, et un élément de retenue (30) incorporant un aimant permanent (23) agencé pour être monté sur l'autre élément. Le bras de verrouillage est sollicité par un ressort dans la position rentrée mais, lorsqu'il se trouve dans la position prédéterminée, est amené à se déplacer vers la position verrouillée par un champ magnétique produit par l'aimant (23), position dans laquelle tout mouvement sensible et relatif des deux éléments est empêché par le fait que le bras de verouillage (38) s'engage avec l'élément de retenue (30).

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