Multipoint Lock Hub Mechanism for Simultaneous Latch Actuation
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Solution Overview
Problem
Existing locks, particularly multipoint locks, require significant effort to operate and often have bulky packaging, limiting user convenience and security in smart home applications.
Innovation Solution
A multipoint lock system with a handle lever and thumb-turn knob mechanism that rotates both hubs in the same direction, allowing for efficient operation of multiple latches and bolts, and an optional powered actuator for simultaneous operation of multiple bolts and latches, maintaining a sleek design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple latches or bolts are extended or retracted simultaneously in a multipoint lock, then security and sealing of the entryway is improved, but the effort required to operate the lock increases significantly
Solution Approach 1:
The patent replaces the traditional manual mechanical operation system with an electric motor-driven system. The motor actuates all latches and bolts simultaneously through electrical power transmission, eliminating the need for manual effort while maintaining simultaneous operation of multiple locking points. This substitution resolves the contradiction by providing high security through simultaneous multi-point engagement while requiring minimal user effort (only pressing a button or card swipe).
Solution Approach 2:
The patent introduces an intermediary control system between the user and the locking mechanism. A control unit receives input from users (via card readers, keypads, or mobile devices) and automatically activates the motor to operate all latches. This intermediary automates the operation process, allowing simultaneous engagement of multiple bolts without requiring the user to apply significant mechanical force, thus resolving the effort vs. security contradiction.
2Extent of automation
If powered actuation is added to multipoint locks for smart home integration, then ease of operation and automation are improved, but device complexity and packaging size increase
Solution Approach 1:
The patent merges the powered actuation system with the existing multipoint lock structure by integrating the motor and control components into the compact housing. The motor is positioned to directly drive the latch mechanism through a shared transmission system, combining multiple functions (power transmission, control, and locking) into a single integrated unit. This merging reduces overall packaging size while maintaining automation capabilities for smart home integration.
Solution Approach 2:
The patent designs a universal control system that can accept multiple types of input (card readers, keypads, mobile device signals) and operates all latches through a single motor mechanism. This multi-functional approach allows the same compact packaging to serve both traditional locking functions and smart home automation, reducing the need for separate components and minimizing overall device complexity while maintaining high extent of automation.
3Ease of operation
If traditional cylindrical or mortise locks are used, then ease of operation is maintained, but security and sealing capability are reduced compared to multipoint locks
Solution Approach 1:
The patent replaces the simple single-point mechanical locking system (cylindrical or mortise locks) with an electrically actuated multipoint system. The motor-driven mechanism can simultaneously engage multiple latches and bolts across the door width, providing enhanced security and sealing while maintaining ease of operation through electronic control. This substitution resolves the contradiction by delivering superior security without sacrificing operational simplicity.
Solution Approach 2:
The patent segments the locking function into multiple independent latches and bolts distributed across different points on the door. Each latch can be independently actuated by the motor system, allowing simultaneous engagement of multiple security points. This segmentation provides enhanced security compared to a single lock point while maintaining ease of operation through centralized electronic control, resolving the security vs. simplicity contradiction.
Data Source
AI summary
A multipoint lock for securing a door panel is described. The multipoint lock includes a first latch, a second latch, a first hub rotatable with at least one of a thumb-turn knob or a key, and a second hub rotatable with a handle lever. Upward rotation of the handle lever causes both rotation of the first hub and rotation of the second hub in the same rotational direction.