Electromechanical locking mechanism for door leaves having a door closing device

A door closing mechanism, said door closing mechanism comprising:

• a guide track;
• a slider;
• said slider being disposed to move back and forth in said guide track;
• a mechanism to connect said slider to a door;
• a locking mechanism to hold said slider in a fixed position;
• said locking mechanism being disposed within said guide track;
• and
• said locking mechanism comprising:
• at least one retaining claw to retain said slider in a fixed position within said guide track;
• said at least one retaining claw having an axis of rotation;
• said at least one retaining claw being mounted to pivot about its axis of rotation;
• said at least one retaining claw being configured to engage with said slider and to hold said slider in a fixed position within said guide track;
• a rod being disposed to pivot said at least one retaining claw about its axis of rotation;
• said rod being disposed adjacent to said at least one retaining claw;
• said rod being disposed to make contact with said at least one retaining claw and to permit engagement and disengagement of said at least one retaining claw with said slider;
• a biasing structure to bias said rod adjacent to said at least one retaining claw to permit engagement and disengagement of said at least one retaining claw with said slider;
• an adjusting device to adjust the bias of said biasing structure;
• and
• an actuator to actuate said rod and to permit engagement and disengagement of said at least one retaining claw with said slider;
• said actuator comprising a solenoid;
• said solenoid having an energized state and a de-energized state;
• said solenoid being configured and disposed to extend and retract said rod in response to said solenoid being in one of the energized state and the de-energized state;
• said biasing structure comprising a spring;
• said spring being disposed to make contact with said adjusting device;
• said spring being disposed to make contact with said rod to bias said rod adjacent to said at least one retaining claw;
• said adjusting device comprising a nut;
• said nut being disposed to make contact with said spring;
• said nut being configured and disposed to be displaceable to set the bias of said spring;
• said locking mechanism comprising an arrangement disposed to limit the pivoting of said at least one retaining claw to a position permitting engagement of said slider with said at least one retaining claw;
• said actuator comprising a connecting member;
• said connecting member comprising a substantially cylindrical outer surface;
• said connecting member comprising a boring disposed therein;
• said connecting member being operatively connected to said solenoid;
• said nut being disposed on said substantial cylindrical outer surface of said connecting member;
• said rod comprising a first end and a second end;
• said first end of said rod being disposed adjacent to said at least one retaining claw;
• said second end of said rod being slidably disposed within said boring of said connecting member;
• said connecting member comprising at least one slot;
• said at least one slot being disposed in said outer cylindrical surface of said connecting member;
• said second end of said rod comprising a pin;
• said pin being at least partially disposed within said at least one slot to prevent rotation of said rod;
• said at least one slot being disposed in said outer cylindrical surface of said connecting member to permit said second end of said rod and said pin to be displaced a predetermined distance within said boring of said connecting member;
• said slider comprising at least one projection,
• said at least one projection being disposed to engage with said at least one retaining claw to hold said slider in a fixed position within said guide track;
• said at least one retaining claw comprising a hook portion;
• said hook portion of said at least one retaining claw being disposed to engage with said at least one projection of said slider to hold said slider in a fixed position within said guide track;
• said at least one retaining claw comprising a substantially curved surface;
• said substantially curved surface being disposed to make contact with said first end of said rod;
• and
• said substantially curved surface having a substantially convex shape.