Door handle assembly with detachable handle

Door handle that prevents forced entry by detaching the exterior handle via indoor operation

This technology is a door handle assembly consisting of mounting plates on both sides of the door bore hole, a pipe passing through them, a spindle rotating inside the pipe, and a fastening member that secures the exterior handle to the pipe. It functions as a standard handle during normal use, but is designed so that the exterior handle detaches when pulled from the outside once the lock is released by operating the indoor spindle.

Existing anti-intrusion door locks typically use motors to block handle rotation, making them ineffective if an intruder pulls on the handle while the door is already unlocked. Furthermore, electronic drive components are susceptible to potential malfunctions.

With this technology, pressing and turning the release button from the inside causes the spindle to push out the fastening member, detaching the exterior handle and neutralizing the force of an intruder pulling on it. An integrated alarm system then sounds to alert others. Suitable for single-person households, studio apartments, offices, and counseling rooms, it provides a simple mechanical solution to prevent forced entry through the door.

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Key Features:

• Exterior and interior handles connected to first and second mounting plates that cover the outside and inside of the bore hole, respectively, and feature center openings
• A first spindle that rotates circumferentially within first and second pipes that pass through the door and connect at the center of the two mounting plates
• Two or more fastening members that connect the exterior handle to the first pipe and release upon movement of the spindle, along with an interior release button
• A configuration that transitions between a first state for opening/closing the door, a second state where the fastening members are released, and a third state where the exterior handle detaches under external force and triggers an alarm

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