Universal Door Stay With Pivot Joint And Threaded Adjustment
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Solution Overview
Problem
Existing solutions for locking doors, windows, and flaps in a partly open position are limited in their versatility, as they are often specific to particular forms of door, window, or flap constructions, failing to accommodate the diverse variations effectively.
Innovation Solution
A stay system comprising a base with a U-shaped shackle and two elongate elements with compatible threading, allowing adjustment and locking, featuring a shaft with a groove for a locking element, enabling secure partial opening and locking of variously constructed doors, windows, and flaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing stay structures are designed for specific door, window or flap constructions, then they can provide stable locking for those particular forms, but they cannot accommodate the diverse variations of different door, window and flap constructions
Solution Approach 1:
The stay is designed with a universal base that can be attached to various door, window and flap constructions using different attachment methods (screws, adhesives, clips). The elongate element with shackle and pivot mechanism can accommodate different movement types (sliding, swinging, lifting), allowing a single stay design to serve multiple functions across different construction types without requiring complex specialized designs for each variant
Solution Approach 2:
The stay is divided into separate components: a base for attachment, an elongate element with pivot joint, and a shackle mechanism. This segmentation allows each component to be optimized independently and facilitates adaptation to different constructions by replacing or adjusting individual parts rather than redesigning the entire stay system
2Adaptability or versatility
If the stay uses a fixed length design, then the structure is simpler, but it cannot be adjusted to hold the wing at different partly open positions
Solution Approach 1:
The stay incorporates a pivot joint that allows the elongate element to rotate relative to the base, enabling dynamic adjustment to different angles and positions. This dynamic mechanism provides continuous adjustability without requiring complex discrete adjustment steps or multiple fixed-length components
Solution Approach 2:
The pivot joint design allows the stay to be easily adjusted by the user through simple manual manipulation without requiring tools or complex mechanisms. The self-adjusting nature of the pivot joint enables the wing to be held at any desired partly open position while maintaining structural simplicity
3Adaptability or versatility
If the stay uses a shackle with a hole through the elongate element, then the elongate element has freedom to move with respect to the shackle enabling adaptability, but this may reduce stability against wind
Solution Approach 1:
The shackle is designed with a U-shape that engages with the elongate element in a way that prevents excessive movement while allowing necessary adjustment. The geometry of the shackle and hole interaction provides preliminary resistance to wind forces before any potential displacement occurs, maintaining stability while preserving adaptability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The stay system allows for secure, adjustable locking of doors, windows, and flaps in a partly open position, accommodating different constructions and providing ventilation while preventing unauthorized entry, with enhanced stability against wind.
Implementation Method 1
a second bore intersecting said first bore for receiving a locking element to prevent withdrawal of the shaft from the first bore
Implementation Method 2
said first and second elongate elements have compatible threading to enable the stay to be adjusted to the requisite length
Implementation Method 3
a first elongate element which is attached to the base in such manner as to be free to pivot with respect to the base
Data Source
AI summary
A stay is provided which comprises a first part (12) including a base (16) for attachment to a wing or to the frame surrounding the wing and an elongate internally threaded tube (24) which is attached to the base (16) in such manner as to be free to pivot with respect to the base. The stay further comprises a second part (14) including a rod (58) with threading compatible with that of the tube (24). A locking element (50) with a circumferential groove is attached to and protrudes transversely from the rod (58) and there is a cylindrical element (40) forming part of a base (34) for attachment to the wing or frame. There is first bore in the element (40) for receiving the element (50) and a threaded second bore intersecting the first bore for receiving a cap screw which enters the groove to prevent withdrawal of the element (50) from the first bore. The second bore is closed by a disc (62) with an Allen key hole opening (64) in it through which the capscrew can be turned.