Multi-Point Locking Actuator for Sliding Fenestration
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Solution Overview
Problem
Sliding fenestration units, such as sliding doors and windows, require users to unlock each locking point separately, necessitating the use of both hands and posing difficulties for individuals with limited access or reaching high lock points.
Innovation Solution
A sliding fenestration assembly with a remotely operated locking system, where an actuator assembly coupled with a flexible or rigid element allows for the simultaneous unlocking and opening of multiple locking latches from a single location, enabling single-handed operation and easy access, with the actuator assembly concealed within the panel for aesthetics and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If each locking point is unlocked separately using a cam lock, then the locking system provides secure multi-point locking, but the operation requires both hands and is difficult for individuals with limited access
Solution Approach 1:
The patent combines multiple separate locking points into a single integrated locking mechanism. The locking bar engages with multiple locking points simultaneously through a single actuation point, allowing all locks to be operated together rather than individually. This merging of functions resolves the contradiction by maintaining multi-point security while enabling single-handed operation.
Solution Approach 2:
The locking bar serves multiple functions: it engages with multiple locking points along the sash, provides a single actuation point for operation, and enables both locking and unlocking functions from one location. This multi-functionality allows the system to maintain secure multi-point locking while being operable from a single accessible point, resolving the ease of operation versus device complexity contradiction.
2Ease of operation
If locking points are distributed along the sash for secure locking, then the locking system provides comprehensive security, but users must reach multiple locations to unlock
Solution Approach 1:
The locking bar acts as an intermediary element that connects the single actuation point to multiple distributed locking points. When the user operates the single locking mechanism, the locking bar transmits the motion to all locking points simultaneously, eliminating the need for the user to reach multiple locations. This intermediary mechanism resolves the contradiction by maintaining comprehensive security coverage while providing centralized accessibility.
Solution Approach 2:
The locking system is segmented into a control portion (single actuation point) and a functional portion (multiple locking points). The locking bar divides the operation into a single user interaction point and multiple engagement points, allowing the user to interact with only one segment while the system handles the distribution to all other segments automatically.
3Reliability
If multiple separate locking mechanisms are provided, then comprehensive security is achieved, but the device becomes more complex and harder to operate
Solution Approach 1:
The patent merges multiple locking mechanisms into a single integrated locking bar system that engages with multiple locking points simultaneously. This consolidation maintains the reliability of comprehensive security while reducing the number of separate mechanisms from which the user must operate, thereby reducing device complexity and improving ease of operation.
Solution Approach 2:
The locking bar serves as a universal mechanism that performs the function of multiple separate locks through a single structure. It engages with multiple locking points along the sash, providing comprehensive security coverage while presenting a unified, simple interface for operation. This multi-functionality resolves the contradiction between reliability and device complexity.
Data Source
AI summary
A sliding fenestration assembly including a panel assembly having at least a primary panel and a secondary panel, where the primary panel is slidable relative to the secondary panel. The assembly further includes an actuator assembly having an actuator. The actuator assembly is coupled with an element, and movement of the actuator causes movement of the element. One or more locking latches are disposed remotely from the actuator, and the two or more locking latches having a locked and unlocked position. The two or more locking latches are coupled with the element and mounted along the primary panel. The actuator assembly is adapted to unlock the two or more locking latches and slide the primary panel.