Multipoint Lock Assembly with Universal Cylindrical Interface
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Solution Overview
Problem
Existing multipoint lock systems for hinged entry doors are not compatible with traditional cylindrical lock hardware, limiting hardware choices and availability, and often lack robustness, reliability, and resistance to tampering.
Innovation Solution
A multipoint lock system that is compatible with traditional cylindrical lock hardware, featuring a rotary or cylindrical latch and knob for normal operation, and a deadbolt activator that extends and retracts a deadbolt and shoot bolts simultaneously, ensuring secure locking with multiple points of engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional multipoint lock systems are used, then security and robustness are improved, but hardware compatibility and availability deteriorate
Solution Approach 1:
The patent applies universality by designing a multipoint lock system that can interface with both traditional cylindrical lock hardware and modern electronic actuators. The lock mechanism incorporates a universal receiver that accepts standard cylindrical keys, knobs, or electronic controllers, allowing the same hardware to serve multiple functions and be compatible with different actuation methods.
Solution Approach 2:
The patent uses an intermediary mechanism - a universal receiver or adapter component - that mediates between traditional cylindrical lock interfaces and the multipoint locking mechanism. This intermediary allows traditional hardware to communicate with and control the multipoint system without requiring complete hardware replacement.
2Reliability
If traditional multipoint lock systems are used, then security is improved, but hardware availability deteriorates
Solution Approach 1:
By making the lock system compatible with widely available traditional cylindrical hardware, the patent dramatically increases hardware availability. Standard cylindrical keys, knobs, and deadbolts that can be purchased at any hardware store can now interface with the multipoint locking mechanism, eliminating the need for specialized or proprietary components.
3Reliability
If multipoint locking mechanism is implemented, then security is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the multipoint lock system into independent, modular components - a universal receiver, individual shoot bolts with separate actuators, and a main deadbolt mechanism. Each component can be manufactured, installed, and maintained independently, reducing overall system complexity despite multiple locking points.
Solution Approach 2:
The patent merges multiple locking functions into a single integrated system that responds to one actuation event. When the cylindrical lock is operated or electronic signal received, the system simultaneously coordinates the extension or retraction of multiple shoot bolts and the main deadbolt, combining complex individual actions into a unified operation.
Data Source
AI summary
A multipoint lock assembly for a swinging door panel includes a mortise housing that is installed in a mortise along the non-hinged edge of the door panel. A latch operating mechanism and a lock operating mechanism are disposed in the mortise housing. Each of these mechanisms is designed to be operated with a standard rotary operator such as a handle or knob for the latch operating mechanism and a key and/or thumb turn for the lock operating mechanism. The latch operating mechanism is transitionable between left- and right-hand orientations and includes a deadlatch feature that prevents forced back-drive. Turning the key and or thumb turn of the lock operating mechanism extends a deadbolt and extends upper and lower shoot bolts from edges of the door. When extended, the shoot bolts also are secured against forced back-drive by unique mechanism configurations.