External Wall Panel Bracket for Nail-Free Fixation
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Solution Overview
Problem
Existing external wall construction methods face issues with poor ornamental appearance, increased construction costs, and safety concerns due to the use of nails for dimension-adjusted panels, which can lead to cracks, water leakage, and unevenness, especially when using hard materials like calcined base materials.
Innovation Solution
The use of an end constructing bracket and a lateral end securing metal fitting that allows dimension-adjusted external wall panels to be securely fixed to the skeleton without nails, maintaining an excellent ornamental appearance and enhancing weather resistance and safety by eliminating the need for nail heads and backup materials, while ensuring the panels are securely fastened through shiplap joints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a nail is used to fix the dimension-adjusted external wall panel, then the panel can be secured to the skeleton, but the ornamental appearance deteriorates and the risk of cracks and water leakage increases
Solution Approach 1:
An end constructing bracket is introduced as an intermediary component between the external wall panel and the skeleton. The bracket includes a holding portion that engages with the panel and a fixing portion that secures to the skeleton, eliminating the need for direct nail penetration into the panel and thus preserving its ornamental appearance while ensuring reliable fixation
Solution Approach 2:
The fixing system is segmented into distinct functional components: the end constructing bracket with holding portion and fixing portion, and the securing metal fitting. This segmentation allows the bracket to handle panels requiring dimensional adjustment while other fittings handle standard panels, maintaining appearance quality across the entire wall surface
2Reliability
If a nail is driven into the external wall panel, then the panel is fixed to the skeleton, but cracks and chippings occur reducing weather resistance
Solution Approach 1:
The end constructing bracket serves as a mediator that distributes fixation forces across a larger area of the panel without concentrating stress at nail penetration points. The holding portion engages with the panel structure internally, providing secure fixation while preventing surface cracks and chippings that would compromise weather resistance
3Shape
If refinish paint is applied to nail-driven areas, then the ornamental appearance improves, but construction efficiency decreases and cost increases
Solution Approach 1:
The problematic nail-driven fixation method is extracted and replaced with the end constructing bracket system. This eliminates the need for subsequent refinish painting operations, maintaining excellent ornamental appearance directly from installation and significantly improving construction efficiency while reducing additional material and labor costs
4Ease of manufacture
If adhesive agent is used to fix the dimension-adjusted panel, then the panel can be attached to the skeleton, but the panel may move forward causing unevenness and the fixation is not completely secure
Solution Approach 1:
The end constructing bracket is pre-assembled with the dimension-adjusted external wall panel before installation on the skeleton. This preliminary action ensures proper alignment and positioning, preventing forward movement and unevenness during and after installation, while maintaining ease of installation through the pre-assembled unit
5Adaptability or versatility
If the external wall panel is cut off to adjust dimension, then the panel fits the opening shape, but the securing metal fitting cannot be used and alternative fixation is required
Solution Approach 1:
The end constructing bracket is designed as a universal solution that can be applied to any dimension-adjusted external wall panel regardless of the specific opening shape or size. This multi-functional component handles all cases where panels require cutting, providing consistent reliable fixation without requiring multiple specialized tools or methods, thus reducing overall system complexity
Data Source
AI summary
An external wall constructing structure excellent in ornamental appearance, weather resistance, contractibility, and safety is provided. An external wall constructing structure 1 comprising external wall panels that are joined to each other by vertical and horizontal shiplap joints and secured to a skeleton of a building by securing a metal fitting 5. A cut-off end portion 23 of a dimension-adjusted external wall panel 20 among the plurality of external wall panels is fixed to a skeleton 10 of the building via end constructing bracket 3. Left and right joint end portions of the dimension-adjusted external wall panel 20 are fixed to the skeleton 10 via lateral end securing metal fittings 6. In the end constructing bracket 3, a rear plate portion 31 is abutted on rear surface 26 of the dimension-adjusted external wall panel 20 and forward-bending portion 32 is abutted on cut-off end surface 231 of the dimension-adjusted external wall panel 20. The rear plate portion 31 and the rear surface 26 of the dimension-adjusted external wall panel 20 are adhered by adhesive agent 11. The forward-bending portion 32 of the end constructing bracket 3 has horizontal section 320, front section 321 and third abutting section 322 and sealing material 163 is placed in front of the front section 321.