Window Snubber System with Spring-Loaded Abutment for Wind Resistance
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Solution Overview
Problem
Existing window snubber systems fail to provide adequate structural strength to pivotable hung windows made of PVC during strong winds, as they tend to bend and dislodge, and are difficult to install, especially in tight spaces, and lack adaptability to different window dimensions.
Innovation Solution
A snubber system comprising a frame mount and a sash mount with cooperating shapes and folded segments that can be easily retrofitted to existing windows, allowing for secure abutment when pressure is applied, enabling the system to be installed on accessible parts of the window frame and sash, and accommodating various window dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If existing snubber brackets (L-shaped and Z-shaped) are used to secure window sashes, then the window structure provides some resistance to wind pressure, but PVC window sashes bend under strong wind pressure causing the interlocking mechanism to fail and the window to pop open
Solution Approach 1:
The snubber system incorporates a spring mechanism that provides dynamic resistance to wind pressure. The spring allows the sash to move slightly under pressure while maintaining continuous contact force, accommodating the flexibility of PVC sashes without failing like rigid interlocking brackets.
Solution Approach 2:
The system changes the physical state of the support mechanism from rigid (existing brackets) to elastic (spring-based). This parameter change allows the snubber to absorb and dissipate wind energy while maintaining reliability with flexible PVC sashes.
2Strength
If Wang brackets are installed on vertical sides of the window frame, then the brackets can interlock to prevent pivoting, but installation requires the window sash to be pivoted open and workers to access both sides of the sash, which is impossible when the window is close to an interior wall
Solution Approach 1:
The snubber system is divided into separate components: a frame-mounted bracket and a sash-mounted snubber with spring mechanism. This segmentation allows independent installation on accessible surfaces without requiring the sash to be removed or accessed from both sides.
Solution Approach 2:
Instead of mounting brackets on the vertical sides requiring sash removal, the system inverts the mounting approach by using accessible horizontal or side surfaces where the frame bracket and sash snubber can be independently installed without disassembling the window.
3Strength
If Z-shaped bracket parts with parallel spaced-apart segments are used, then the bracket can abut against window sash parts, but the bracket features must match the specific dimensions and features of the window sash, making a given bracket incompatible with sashes of different dimensions
Solution Approach 1:
The snubber system employs universal mounting surfaces and adjustable components that can accommodate various sash dimensions and profiles. The frame bracket and sash snubber are designed with standardized interfaces that work across different window sizes without requiring custom-matched features.
Solution Approach 2:
The spring mechanism provides dynamic adjustment capability, allowing the snubber to adapt to different sash positions and dimensions while maintaining effective wind resistance. This elasticity replaces the need for precise dimensional matching required by rigid segmented brackets.
Data Source
AI summary
A snubber for a window unit. The snubber includes a frame mount for securing to the frame of the window unit and a sash mount for securing to the sash of the window unit, proximate the frame mount. The frame mount and the sash mount have cooperating shapes for abutting against each other upon the window unit being closed and upon pressure being applied to the sash. The frame mount and the sash mount can be secured to the window unit on easily accessible parts of the window unit.