Fence Assembly Thermal Expansion Compensation
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Solution Overview
Problem
Existing fence arrangements fail to effectively compensate for thermal expansion in composite structures with materials of different coefficients of linear expansion, leading to potential cracks and deformations, especially in outdoor applications like picket fences where vertical expansion is not adequately addressed.
Innovation Solution
A fence arrangement featuring a load-bearing structure with a fixed bar and a movable bar, where the non-load-bearing component with a higher coefficient of thermal expansion is connected to both in a force-fitting or form-fitting manner, allowing thermally induced relative movement, ensuring stability and aesthetics by compensating for linear expansion in one direction while maintaining static and functional requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bracket is used to allow horizontal movement of fence slats, then thermal expansion compensation is achieved in horizontal direction, but the solution is not suitable for door constructions requiring stable frames and cannot compensate for vertical expansion
Solution Approach 1:
The patent introduces a movable bar that can shift position along the fixed bar in response to thermal expansion forces. This dynamic element allows the fence structure to adapt to temperature changes while maintaining structural integrity, resolving the contradiction between stability and expansion compensation.
Solution Approach 2:
The fence structure is divided into fixed and movable components, with the non-load-bearing component connected to both a fixed bar and a movable bar. This segmentation allows different parts of the structure to have different degrees of freedom, enabling expansion compensation without compromising overall structural stability.
2Ease of manufacture
If simple enlarged holes are used for fastening elements in door constructions, then installation is simplified, but the solution is neither functionally nor structurally satisfactory
Solution Approach 1:
The movable bar acts as an intermediary element between the fixed structure and the non-load-bearing component. It provides a controlled mechanism for movement and force distribution, replacing the inadequate enlarged hole solution while maintaining ease of installation through standardized connections.
3Reliability
If existing horizontal expansion compensation systems are used, then thermal expansion is compensated in horizontal direction, but vertical thermal expansion in picket fences cannot be compensated
Solution Approach 1:
The patent extends the expansion compensation mechanism from purely horizontal movement to include vertical movement capabilities. The movable bar can shift in multiple directions along the fixed bar, enabling the system to compensate for thermal expansion in both horizontal and vertical dimensions, thus addressing the limitation of existing 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
The solution effectively compensates for thermal expansion in composite structures, preventing deformations and ensuring longevity and aesthetic integrity by allowing relative movement between the non-load-bearing and load-bearing components, thus addressing the limitations of prior art.
Implementation Method 1
components with different coefficients of linear expansion for compensating thermal expansion
Data Source
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AI summary
The invention relates to a fence arrangement of components with different coefficients of linear expansion for compensating thermal expansion, in particular a composite structure made of materials with significantly different coefficients of thermal expansion. It is therefore an object of the invention to eliminate the disadvantages of the prior art and to provide a fence arrangement of components with different coefficients of linear expansion for compensating thermal expansion, while maintaining the static and functional requirements of the arrangement. This object is achieved by the features listed in the claims.