Sliding Door Foot Bolt With Pivotable Panel Stop
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Solution Overview
Problem
Current fenestration hardware, such as sliding patio door systems, lack effective mechanisms to manually limit travel positions, particularly for fully closed and partially open configurations, leading to inadequate control over panel movement.
Innovation Solution
A lock kit with a pivotable panel stop that can be configured to maintain panels in a fully closed position, limit sliding beyond a preset partially open position, and allow unrestricted motion, utilizing a panel stop assembly with spring detents to pivot between these positions within a recess of a frame member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed stop mechanism is used to maintain panels in a fully closed position, then security and stability are improved, but flexibility and ease of operation are worsened
Solution Approach 1:
The panel stop is designed as a movable component that can pivot between multiple positions (fully closed, partially open, and unrestricted) rather than being fixed. This dynamic design allows the stop to adapt to different operational modes, providing secure locking when needed while allowing free movement when desired, thus resolving the contradiction between security and flexibility.
2Manufacturing precision
If a single-position stop mechanism is used, then device complexity is reduced, but travel control precision is worsened
Solution Approach 1:
The stop mechanism is segmented into multiple discrete positions (fully closed position, partially open position, and unrestricted position) that can be selectively engaged. Each position provides precise control for specific operational requirements, and the segmentation allows the system to achieve high travel control precision without requiring a continuously adjustable complex mechanism.
3Ease of operation
If manual actuation mechanism is added to enable multiple lock positions, then travel limit control is improved, but device complexity is worsened
Solution Approach 1:
The manual actuation mechanism utilizes the natural sliding motion of the panel to automatically pivot the stop between different positions. As the panel slides, the stop rotates about its pivot axis and can be engaged or disengaged from stop positions through the panel's own movement, eliminating the need for separate actuators or complex control systems while maintaining ease of operation.
Data Source
AI summary
A lock kit for a fenestration assembly includes a panel stop. The fenestration assembly includes a first panel and a second panel, at least one of the first and second panels being slideable relative the other of the first and second panels. The panel stop is configured to pivotably mount within a recess of a frame member of the first panel and pivot between a first stop position configured to maintain the first and second panels in a fully closed position, a second stop position configured to limit sliding of the first and second panels beyond a preset partially-open position, and a third position substantially within the recess, the third position being configured to not restrict a range of motion of the first and second panels.