Mechanical-combination door lock
OwnerMiko Lee, Hung-Lin Liaoinventors
Life of this patent
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Abstract
A mechanical-combination door lock has a housing assembly, a lever assembly, a disable mechanism and a combination mechanism. The housing assembly is adapted to securely mount on a door. The lever assembly is mounted though the housing assembly and has a lock body, a lock bolt, an outer lever, an inner lever, a lock core, a lock rod and a linking gear wheel. The disable mechanism is mounted in the housing assembly above the lever assembly and has a retaining ring, a resetting resilient element and a turning rod. The combination mechanism is mounted in the housing assembly and has a pintle, multiple sleeves and multiple wheels. The mechanical-combination door lock has mechanical-combination detection and resetting functions and is allowed to be temporarily disabled while the door is open.
Claims13
A mechanical-combination door lock is mounted on a door with an outer surface, an inner surface and a side and the mechanical-combination door lock comprising:
- a housing assembly being adapted to mount securely on the door;
- a lever assembly mounted though the housing assembly and having
- a lock body mounted in the housing assembly and being adapted to mount through the door;
- a lock bolt connected to the lock body and being adapted to mount on the side of the door;
- an outer lever rotatably mounted through the housing assembly at the outer surface of the door;
- an inner lever rotatably mounted through the housing assembly at the inner surface of the door;
- a lock core mounted securely in the outer lever, connected to the lock body to drive the lock body;
- a lock rod mounted through the inner lever, connected to the lock body to drive the lock body;
- and
- a linking gear wheel mounted in the lock body and rotated with the lock core or the lock rod via the lock body;
- a disable mechanism mounted in the housing assembly above the lever assembly and having
- a retaining ring rotatably mounted in the housing assembly above the linking gear wheel and having
- an outer periphery;
- a retaining recess formed in the outer periphery of the retaining ring;
- and
- a tooth segment formed on and protruding from the outer periphery of the retaining ring and selectively engaging the linking gear wheel to enable the linking gear wheel to rotate with the retaining ring;
- a resetting resilient element connected to the retaining ring and the housing assembly to provide a resetting force to the retaining ring;
- and
- a turning rod mounted through the housing assembly, connected securely to the retaining ring and having
- an outer end extending out of the housing assembly;
- and
- an inner end connected securely to the retaining ring;
- and
- a combination mechanism mounted in the housing assembly and having
- a pintle mounted through the housing assembly, connected to the lever assembly and having
- a lower end extending downwardly to the retaining ring of the disable mechanism;
- an upper end;
- an external surface;
- a retaining protrusion formed on and protruding downwardly from the lower end of the pintle and selectively engaging the retaining recess of the retaining ring;
- and
- multiple positioning segments axially formed on and arranged around the external surface of the pintle at intervals between the retaining protrusion and the upper end of the pintle and each positioning segment having
- multiple positioning protrusions separately and axially formed on the external surface of the pintle and aligning with each other;
- and
- multiple grooves respectively defined between the positioning protrusions of a corresponding positioning segment and communicating with the grooves of the adjacent positioning segments;
- multiple sleeves mounted around the pintle and each sleeve having
- an outer surface;
- an inner surface;
- a lower end;
- and
- multiple positioning protrusions separately formed on the inner surface of the sleeve adjacent to the lower end of the sleeve and selectively and slidably mounted in corresponding grooves of the pintle and each positioning protrusion of the sleeve selectively and slidably mounted around the pintle between the positioning protrusions of two specific and adjacent positioning segments;
- and
- multiple wheels being annular and respectively and rotatably mounted around the sleeves.
Dependencies are inferred from the claim text.