Digital door lock for crime prevention

Crime-prevention digital door lock that deploys a self-defense device via keypad input

This technology is a digital door lock featuring a handle with a built-in storage compartment for a self-defense device. When a designated input code is entered, an ejection unit activates to release the device from the compartment.

Residential break-ins targeting people living alone as they open their front doors are on the rise, but portable self-defense tools are often difficult to carry at all times, making them unavailable when needed most. Existing emergency-release door locks are also limited, as they only alert others to an emergency signal without providing immediate means for self-defense.

This technology uses a compression spring, a locking member, and an actuator-driven rotating hook to eject the self-defense device from the handle upon emergency input, while simultaneously sounding an alarm to alert those nearby. This door lock can be integrated into security systems for single-person households, studio apartments, and officetels, ensuring immediate access to self-defense tools even if attacked at the doorstep.

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Key Features:

• A body installed on a door with a keypad, a handle installed on the body with a storage compartment, and a self-defense device inserted into the storage compartment
• An ejection unit that operates based on the keypad input to release the self-defense device from the storage compartment, and a speaker that emits a warning sound
• An ejection unit consisting of a locking member between the compression spring in the storage compartment and the self-defense device, and a blocking member that prevents the movement of the locking member caused by the spring's restorative force
• A blocking member including a hook member rotatably coupled to the handle with a catch that engages with a locking ledge, and an actuator that rotates the hook to release the engagement

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