Orientable Pickets Fence Assembly with Snap-Fit Coupling
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Solution Overview
Problem
Existing fence assemblies require complete replacement to modify the geometric configuration of pickets and rails, as they are permanently welded or fastened, limiting flexibility and adaptability in installation and design.
Innovation Solution
A fence assembly utilizing a C-shaped coupling member with side fins and open notches for snap engagement, allowing pickets to be angularly oriented and positioned relative to rails, enabling easy modification and adjustment of the fence's geometry without welding, using press-fitting and rotational fastening mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If pickets are welded or firmly connected to rails, then structural strength and stability are improved, but adaptability and ease of modification are worsened
Solution Approach 1:
The fence assembly is divided into separate modular components (pickets, rails, posts) that can be independently assembled and disassembled. The coupling members act as intermediaries that connect these segments without permanent bonding, allowing the fence to be reconfigured or modified by simply reconnecting the modular elements in different arrangements.
Solution Approach 2:
The connection system transitions from static permanent welding to dynamic reversible coupling. The coupling members with snap-fit and rotational mechanisms enable the fence structure to be easily reconfigured, adapted to different installation conditions, and modified without damage to components.
2Stability of the object's composition
If pickets are permanently fastened to rails, then structural stability is improved, but ease of assembly and disassembly is worsened
Solution Approach 1:
The permanent mechanical connection of welding is replaced with a reversible mechanical coupling system. The coupling members use snap-fit engagement and rotational locking mechanisms that provide stable connections during use but can be easily released and repositioned, eliminating the need for welding operations.
3Strength
If fence components are firmly connected, then structural integrity is improved, but manufacturing cost and complexity are worsened
Solution Approach 1:
The coupling member is designed as a universal multi-functional component that performs multiple functions: it provides structural connection between pickets and rails, enables rotational adjustment for angular orientation, allows snap-fit assembly for ease of installation, and facilitates disassembly for modification. This single component replaces what would otherwise require multiple separate elements (fasteners, welds, adjustment mechanisms).
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
Enables rapid and cost-effective assembly and disassembly of fence components, allowing for flexible geometric configurations and adaptations to different installation conditions, including non-horizontal surfaces, without the need for welding.
Implementation Method 1
The coupling member comprises a C shaped body having a rear wall and two side fins forwardly extending from side edges of the rear wall; said fins being provided with an open notch at one or both ends, and conformed with rounded opposite edges to be press-fitted into said opening, and to snap engage at least one edge of the opening into the open notches of the fins
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A fence assembly comprising one or more rails (10) fastened to post members (11), and a plurality of picket members (13) fastened to a rail or rails by respective fastening devices. Each fastening device comprises a C shaped coupling member (14) having a rear wall (15) and side fins (16) provided with open notches (20) to be fitted into and snap engaged in an opening of the picket and/or post members (11, 13), and/or of the rail (10).