Adjustable Wing Holding Device Transmission Mechanism
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Solution Overview
Problem
Existing shutter holding devices require tailor-made designs based on leaf dimensions, leading to increased production costs and inconvenience, especially for users with vertigo due to the need to operate them from outside the window.
Innovation Solution
A holding device comprising a striker fixed to the frame, a blocking portion fixed to the leaf, and a movable portion with a transmission member that allows for easy assembly and adjustment through a through-opening, enabling adaptation to different leaf dimensions without the need for custom fabrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If custom-made retaining devices are produced for each door leaf dimension, then the device can be precisely adapted to specific leaf dimensions, but production costs increase and manufacturing complexity increases
Solution Approach 1:
The patent applies universality by designing a single standardized retaining device model that can serve multiple door leaf dimensions. The key mechanism is the adjustable transmission element (tige de transmission) whose length can be modified to accommodate different distances between the strike plate (paquet de gonds) and the locking portion (portion de blocage). This allows one device design to universally fit various leaf sizes without requiring custom fabrication for each dimension.
Solution Approach 2:
The patent applies dynamics by making the transmission element length adjustable rather than fixed. The transmission element can be modified in length through cutting or replacing with different length elements, allowing the device to dynamically adapt to different installation requirements. This dynamic adjustability eliminates the need for multiple static device variants for different door leaf sizes.
2Ease of manufacture
If fixed-length transmission elements are used, then manufacturing is simplified, but the device cannot be adapted to different door leaf dimensions
Solution Approach 1:
The patent transforms the static transmission element into a dynamic, adjustable component. While the base design maintains manufacturing simplicity through standardized production, the transmission element's length can be modified post-manufacturing through cutting or replacement. This allows the system to maintain simple standardized manufacturing while gaining adaptability to different door leaf dimensions through field adjustment.
3Reliability
If shutter stops are fixed to the wall requiring operation from outside the window, then the shutter can be securely held in open position, but user safety is compromised and ease of operation deteriorates
Solution Approach 1:
The patent applies inversion by reversing the traditional operation sequence. Instead of requiring the user to reach outside the window to operate the shutter stop (traditional approach), the control portion (portion de commande) is positioned inside the window opening. The user operates the device from inside the safe zone, and the mechanical transmission element transfers this internal operation to the external locking mechanism, securing the shutter without requiring the user to expose themselves to external hazards.
Data Source
Figure 1
Figure 2A~2B
Figure 2C~3A
AI summary
The invention relates to a device for holding a movable leaf relative to a frame, the holding device comprising a strike plate suitable for being fixed to the frame, a fixed portion suitable for being fixed to the leaf, and a movable portion, the movable portion comprising a control portion including a transmission element extending along a main extension direction, a blocking portion fixed in translation to the control portion so that the blocking portion is controlled in translation along the main extension direction by the control portion.