초록 ▼

An electric door lock having a return means comprising a pair of locking members, a return member, rod guides, and leaf springs which eliminates the disadvantages of roller type pivot member locks. The lock is thinner to provide improved appearance. The locking members and return member may be conne

An electric door lock having a return means comprising a pair of locking members, a return member, rod guides, and leaf springs which eliminates the disadvantages of roller type pivot member locks. The lock is thinner to provide improved appearance. The locking members and return member may be connected to each other to ensure more reliable operation. A biasing force is applied to the locking members in the same direction as the pivotal movement of the locking members, and the engaging surface of the locking members does not apply force to the locking levers thereby making it possible to disengage the locking lever from the locking members using only a minimum of magnetic force and consuming only a small amount of electric power which can be conveniently supplied by a small DC battery.

대표청구항 ▼

An electrically actuated door lock comprising: a lock housing having opposed side walls; a locking member pivotally mounted between the opposed side walls whereby said locking member is operable to pivot out of and retract into said lock housing; a return member pivotally mounted in said housing whe

An electrically actuated door lock comprising: a lock housing having opposed side walls; a locking member pivotally mounted between the opposed side walls whereby said locking member is operable to pivot out of and retract into said lock housing; a return member pivotally mounted in said housing whereby said return member is operable to pivot out of and retract into said lock housing; a first connecting rod having one end connected to said locking member; a second connecting rod having one end connected to the return member; a first rod guide pivotally connected between the opposite side walls and having means for slidably receiving another end of said first connecting rod; a second rod guide pivotally connected between said opposed side walls and having means for slidably receiving another end of said second connecting rod; a first biasing means, cooperating with said first connecting rod, for applying a bias force against said locking member; a second biasing means, cooperating with said second connecting rod, for applying a biasing force against said return member; a first spring, fixed at one end thereof to the first rod guide and at another end thereof contactable with a surface of said return member; a second spring fixed at one end thereof to the second rod guide and at another end thereof contactable with a surface of said locking member; a locking lever disposed adjacent to said locking member and operable for engaging an engaging surface of said locking member to maintain said locking member in a locked position; an actuating lever operable for disengaging said locking lever from the engaging surface, said actuating lever having a shoulder at its rear end, said locking lever and said actuating lever being pivotally mounted in said housing; means for applying a biasing force in one direction to said locking lever and for applying a biasing force in a reversed direction to said actuating lever; an electrically operable plate for engaging the shoulder of the actuating lever; a manually operable means, disposed adjacent to and operable for moving the electrically operable plate; and a longitudinally movable releasing lever disposed adjacent said locking lever.