Hook-on Clip Wall Panel System for Thermal Expansion
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Solution Overview
Problem
Architectural wall panel systems face challenges such as thermal expansion and contraction issues leading to warping and cracking, ineffective sealants due to joint size changes, and complex installation processes with numerous parts and labor-intensive fastening requirements, with existing attachment systems failing to adequately address these issues.
Innovation Solution
An architectural wall panel system utilizing hook-on clips that connect to a mounting rail, allowing for thermal cycling without the need for fasteners, with slots in the wall panels enabling expansion and contraction, and a simplified attachment process using self-drilling fasteners and shims for secure installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional attachment systems with locking members are used to secure wall panels, then the panels are firmly fixed to the building surface, but the panels cannot accommodate thermal expansion and contraction, leading to warping and cracking
Solution Approach 1:
The attachment system transitions from a static locked state to a dynamic adjustable state. The clip allows the wall panel to move horizontally within a range while maintaining vertical attachment, enabling the system to adapt to thermal expansion and contraction without compromising the fixed installation appearance
Solution Approach 2:
The system changes the attachment parameter from fixed position to adjustable position. The clip's horizontal adjustment capability allows the attachment point to shift as thermal conditions change, maintaining both security and adaptability to environmental variations
2Strength
If locking members with apex surfaces are used to prevent panel removal, then the attachment strength is increased, but the complexity of installation and repair is significantly increased
Solution Approach 1:
The attachment function is segmented into two independent components: the clip that provides attachment strength through its engagement with the channel, and the panel that can be freely removed. This separation allows the clip to remain permanently installed while panels can be easily replaced without affecting attachment strength
Solution Approach 2:
The channel acts as an intermediary element between the clip and the panel. The channel receives the clip and allows horizontal movement, while the panel can be inserted and removed independently. This intermediary structure enables easy panel replacement while maintaining strong attachment through the clip-channel connection
3Reliability
If multiple fasteners are used to secure clips to wall panels and substructure, then the attachment security is improved, but the installation time and labor requirements increase significantly
Solution Approach 1:
The clip integrates multiple functions into a single component: it attaches the panel to the substructure, allows horizontal movement for thermal expansion, and provides a mechanism for easy panel removal. This consolidation eliminates the need for multiple separate fasteners and reduces installation complexity
Solution Approach 2:
The clip's design allows it to self-attach to the channel through simple horizontal insertion and engagement, eliminating the need for complex fastening operations. The system serves itself by using the panel's own movement and positioning to engage the clip securely without requiring additional fastening steps
4Reliability
If sealants are used in joints between wall panels to prevent air and water infiltration, then the sealing effectiveness is improved, but the sealants become dislodged and cracked during thermal cycling
Solution Approach 1:
The attachment system allows dynamic movement of wall panels horizontally to accommodate thermal expansion and contraction. This movement capability prevents stress accumulation in sealants, eliminating the primary cause of sealant displacement and cracking while maintaining sealing effectiveness through the joint design
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 allows for efficient thermal expansion and contraction of wall panels, reduces installation complexity, and provides a secure attachment system that withstands natural weather conditions while minimizing maintenance, enhancing the durability and longevity of the panel system.
Implementation Method 1
The metal and composite materials used most commonly in architectural wall panel systems are subject to natural expansion and contraction due to changes in atmospheric conditions, including heat and humidity
Implementation Method 2
an attachment system having hook-on clips to connect the wall panels to a mounting rail attached to the building surface
Data Source
AI summary
A wall panel system includes at least one wall panel, each edge of the panel having a flange. At least one flange, and preferably two opposing flanges, have at least one slot therein. Each slot is mated with a clip having a unique shape that allows the clip to be inserted into the slot and secured therein without the use of fasteners and strictly due to its shape. The clip may then be attached to a building surface or intermediary mounting apparatus by a fastener to secure the wall panel thereto.