Panel-Post Connector Plate for Fence Panel Stability
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Solution Overview
Problem
Current fence posts, particularly timber, plastic, and metal designs face issues such as decay, discoloration, heaviness, and manufacturing inefficiencies, while existing connectors struggle to securely attach panels and rails, leading to movement and wind rattle.
Innovation Solution
A fence system featuring a metal fence post with a H-shaped cross-section and a panel-post connector plate that includes a post-receiving aperture and a header-rail engagement member, allowing for quick and secure attachment of panels and rails without additional fasteners, and a gravel-board retaining device for easy installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If timber fence posts are used, then they are easy to manufacture and install, but they are vulnerable to decay and rotting over time
Solution Approach 1:
The invention uses a composite structure combining a concrete core with a metal casing. The concrete provides structural strength and stability, while the metal casing (galvanised steel or aluminium) provides resistance to corrosion and decay. This composite approach allows the fence post to achieve both ease of manufacture and long-term reliability against environmental degradation.
2Reliability
If plastic fence posts are used, then they are moisture resistant, but they become discoloured or embrittled by sunlight exposure
Solution Approach 1:
The metal casing (galvanised steel or aluminium) provides superior resistance to both moisture and sunlight UV radiation compared to plastic. The galvanised coating on steel or the natural oxide layer on aluminium protects against corrosion and prevents degradation from solar exposure, eliminating the discoloration and embrittlement issues associated with plastic fence posts.
3Strength
If concrete fence posts are made strong enough for fence posts, then they achieve required strength, but they become too heavy to be manoeuvred
Solution Approach 1:
The fence post is segmented into two functional parts: a concrete core providing structural strength and stability, and a thinner metal casing providing protection and surface finish. This segmentation allows the heavy concrete to be confined to the essential load-bearing core, while the metal casing adds minimal weight but provides durability and aesthetic qualities.
Solution Approach 2:
The composite construction with concrete core and metal casing optimizes the weight-strength ratio. The concrete provides the necessary structural strength, while the metal casing adds protection without significantly increasing weight, making the post easier to handle during installation compared to solid concrete posts of equivalent strength.
4Strength
If present metal fence post designs are used, then they achieve required strength, but they are uneconomical to manufacture and/or too heavy to be manoeuvred
Solution Approach 1:
The fence post is segmented into a concrete core and a metal casing, allowing each material to be manufactured separately using optimized processes. The concrete core can be pre-cast in molds, and the metal casing can be formed from sheet metal and galvanised or painted, enabling efficient mass production and reducing manufacturing costs compared to traditional solid metal posts.
Solution Approach 2:
The composite design uses materials strategically: concrete for the core structure and metal for the protective casing. This allows the use of cheaper materials in appropriate locations, reducing overall manufacturing cost while maintaining structural integrity and durability.
5Ease of operation
If fence panels are not connected to adjacent fence posts, then installation is simpler, but movement and wind rattle of fence panels occurs
Solution Approach 1:
The fence post includes pre-formed attachment features such as flanges, channels, or mounting brackets that are prepared during manufacturing. These pre-prepared features allow fence panels to be easily connected using simple fasteners, maintaining installation simplicity while ensuring panel stability against movement and wind rattle.
Data Source
Figure 1
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AI summary
A panel-post connector plate (16) for connecting a fence post (12) to an adjacent fence panel (14). The panel-post connector plate (16) comprises a plate body (84) having a post-receiving aperture (86) for receiving at least part of the fence post (12) therethrough, and a fastener receiving aperture (92) for receiving a fastener to attach the plate body (84) to a panel-body of the adjacent fence panel (14). A header-rail engagement member (94) is at or adjacent to the plate body (84), the header-rail engagement member (94) receivable in the header rail (26) of the adjacent fence panel (14). A temporary rail support device, a gravel-board retaining element, a fence post and a fence are also described.