Screening Arrangement Resilient Tab Mounting Bracket
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Solution Overview
Problem
Existing window screening arrangements face difficulties in installation and dismounting, especially with larger windows, due to increased production tolerances, which can lead to unstable engagement and potential damage during installation or removal.
Innovation Solution
A screening arrangement featuring a tab and notch locking mechanism with a resilient tab that biases the end piece to securely engage with the mounting bracket, allowing for easy installation and dismounting by moving the top element in the height direction to disengage the tab from the notch, without requiring separate tools or manual manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tab and notch locking mechanism is used to provide stable engagement, then reliability of engagement is improved, but difficulty of dismounting increases
Solution Approach 1:
The locking mechanism transitions from a static rigid connection to a dynamic system where the tab can move between engaged and disengaged states. The tab is designed to be movable within the notch, allowing it to flex during engagement and disengagement while maintaining stable locking during normal operation. This dynamic capability enables easy dismounting by simply moving the screening device in the height direction without requiring forceful manipulation or tools.
Solution Approach 2:
The system changes the positional parameter of the tab relative to the notch. During normal operation, the tab is positioned within the notch to provide stable engagement. During dismounting, the tab is moved out of the notch by displacing the screening device in the height direction. This parameter change allows the same locking mechanism to provide both stable engagement and easy dismounting.
2Adaptability or versatility
If production tolerances are increased for larger windows, then adaptability to different window sizes is improved, but manufacturing precision of mounting alignment deteriorates
Solution Approach 1:
The mounting system accommodates variations in positional parameters due to production tolerances. The tab and notch design allows for a range of acceptable positions, where the tab can engage with the notch even when there are slight deviations in mounting alignment. This parameter tolerance built into the design enables the system to adapt to different window sizes and manufacturing variations without requiring high-precision alignment.
Solution Approach 2:
The locking mechanism is designed to be universally applicable across different window sizes and configurations. The tab and notch geometry is such that it can accommodate variations in positioning, making the same mounting bracket design suitable for both smaller and larger windows. This universal design approach allows the system to maintain reliable engagement regardless of the specific window dimensions or production tolerances.
3Reliability
If a resilient tab with bias is used to prevent unintentional release, then reliability of retention is improved, but device complexity increases
Solution Approach 1:
The resilient tab acts as a counterbalancing element that provides a biasing force to maintain engagement. The resilience of the tab creates a restoring force that keeps the tab engaged with the notch, preventing unintentional release. This counterbalancing mechanism is achieved through the elastic properties of the tab material itself, rather than requiring additional complex retaining structures or multiple locking components.
Solution Approach 2:
The resilient tab is self-regulating and automatically maintains the engaged state without requiring external control mechanisms. The bias in the resilient tab continuously pushes the tab into the notch, and the tab automatically responds to any attempted disengagement by flexing and maintaining contact. This self-service capability provides reliable retention while keeping the mechanism simple, as the tab's own elastic properties perform the retention function without needing additional springs, actuators, or control systems.
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
Facilitates safe and stable engagement during normal use while enabling easy dismounting without unintentional release, independent of window position or size deviations, ensuring secure and hassle-free installation and removal processes.
Implementation Method 1
a resilient tab provided at the periphery of the end piece and biased in the height direction to prevent the tab from being removed from the notch in the mounted condition
Data Source
Figure 1
Figure 2~4
Figure 5
AI summary
The screening device (12) is provided with a set of two end pieces (171), each having a generally plane body portion (1710) extending substantially in a plane, and a set of two mounting brackets (50). During mounting, the screening device (12) is configured to be connected with the set of mounting brackets (50) by moving the screening device with its set of end pieces (161, 171) substantially in the depth direction (X). Locking means includes a tab (40) of the end piece (171) to interact with a notch (52) and a resilient tab (30) provided at the periphery of the end piece (171) and biased in the height direction (Z). In an embodiment, the resilient tab (30) is configured to interact with a notch (51) on the mounting bracket (50).