Catch mechanism for a locking device
AssigneeStendals El AB
InventorLars Jensen
Life of this patent
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Abstract
The present invention relates to a catch mechanism for blocking a bolt to prevent unauthorized opening of a door, the catch mechanism comprising a follower for operating a bolt between a locked state in which the bolt is extended and an unlocked state in which the bolt is retracted; a catch configured to block the follower for preventing movement of the bolt in the locked state, and a control member for operating the follower and the catch, The invention also relates to a locking device comprising such a catch mechanism.
Claims7
A catch mechanism (10″) for blocking a bolt to prevent unauthorized opening of a door, the catch mechanism comprising
- a follower (23) for operating a bolt (61) between a locked state in which the bolt (61) is extended and an unlocked state in which the bolt (61) is retracted;
- a catch (22) configured to block the follower (23) for preventing movement of the bolt (61) in the locked state;
- a control mechanism (21′) for operating the follower (23) and the catch (22), the control mechanism (21′) comprising a first member (21A) that is rotatably arranged and a second member (21B) that is also rotatably arranged, the first and second members (21A, 21B) being operatively connected to each other so that a rotation of one of the first member (21A) and second member (21B) results in a rotation of the other one of said first member (21A) and second member (21B), wherein
- the catch mechanism (10″) also comprises
- a first connector (71′) for connecting the first member (21A) to the catch (22) and operating the catch (22) during a rotary movement of the first member (21A), wherein the first connector (71′) comprises a first contact surface (711′) on the first member (21A) and a second contact surface (712′) on the catch (22), and
- a second connector (81′) for connecting the second member (21B) to the follower (23) and operating the follower (23) during a rotary movement of the second member (21B), wherein the second connector (81′) comprises an opening (812′) and a protrusion (811)′ extending into the opening (812′), the opening (812′) having a diameter that is larger than a diameter of the protrusion (811′) so that a play is formed in which the protrusion (811′) is able to move without contacting a wall of the opening (812′), and wherein one of the opening (812′) and the protrusion (811′) is arranged on the second member (21B) and the other is arranged on the follower (23), and wherein
- the second connector (81′) comprises the play so that the control mechanism (21′) during a first portion of a rotary movement operates only the catch (22) and during a second portion of a rotary movement operates the follower (23), wherein the first member (21A) and the second member (21B) are toothed wheels that are operatively connected to each other by teeth of the first member (21A) engaging with teeth of the second member (21B).
Dependencies are inferred from the claim text.