Locking mechanism for an appliance door

Details Locking mechanism for an appliance door Locking mechanism for an appliance door

E - Fixed Constructions

05

B

E05B 47/06 (2006.01) D06F 37/42 (2006.01) E05B 17/22 (2006.01)

Patent

CA 2261101

A mechanism for locking an access door of an appliance includes a spring biased catch member preferably attached to the door and a latching housing insert fixed to a cabinet shell of the appliance. Upon closing the door, the catch member is caused to ride up a ramped retaining element mounted in a latching cavity, while simultaneously pivoting a first locking element between release and set positions. When the door is fully closed, the catch member drops behind the retaining element to releasably hold the door closed. When it is desired to maintain the door in a securely locked position, a linear actuator is activated to shift a second locking element into engagement with the first locking element. Preferably, the first and second locking elements are engaged through a ratchet connection which enables continued rotation of the first locking element to only further lock the catch member in the latching cavity. Deactivation of the linear actuator enables opening of the door, preferably in a timed and controlled manner in accordance with a safety unlocking algorithm.

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