Rotating Fastening Body for Tool-Free Railing Assembly
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Solution Overview
Problem
Modular railing systems face challenges in being cost-effective and easy to assemble, with complex production processes and high installation requirements due to the need for numerous holes and threads, requiring significant expertise and effort.
Innovation Solution
A simple assembly system using rotatably mounted fastening bodies made from inexpensive materials like steel tubes and round bars, allowing for tool-free assembly and adjustable radii for secure clamping of handrails to railing posts without complex tooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If modular railing systems are assembled using traditional screw and thread connections, then structural stability is achieved, but production cost and installation complexity increase significantly
Solution Approach 1:
The patent extracts and eliminates the complex threading and hole-drilling operations from the assembly process. By using a press-fit connection system where the handrail is inserted into a post with an integrated fastening mechanism, the need for separate screws, threads, and multiple fastening components is removed, significantly simplifying both production and installation while maintaining structural stability
Solution Approach 2:
The patent merges the fastening function into the post structure itself. The post includes an integrated fastening body that combines support and connection functions, eliminating the need for separate fasteners. This merging reduces the number of parts and assembly steps while ensuring reliable structural connection
2Reliability
If modular railing systems use multiple drilled holes and turned threads for assembly, then secure connection is achieved, but manufacturing cost and time increase
Solution Approach 1:
The patent segments the connection function into two simple operations: insertion of the handrail into the post and rotation of a single fastening element. This segmentation replaces complex multi-step processes (drilling, threading, multiple fastenings) with two simple, sequential actions that are easier to manufacture and assemble
Solution Approach 2:
The patent changes the connection parameter from threaded engagement to rotational clamping. By using a fastening body that rotates to clamp the handrail against the post, the system transforms the connection mechanism from requiring precise thread engagement to a simpler rotational motion that is easier to manufacture and less prone to errors
3Manufacturing precision
If experienced installers are used for complex railing assembly, then installation quality is maintained, but labor cost increases
Solution Approach 1:
The patent designs a self-aligning connection system where the handrail automatically positions itself within the post during insertion. The integrated fastening mechanism guides the assembly process, reducing the need for skilled judgment and manual adjustment. This self-service feature allows less experienced installers to achieve consistent, high-quality results without extensive training
Solution Approach 2:
The patent incorporates preliminary alignment features in the post and handrail design that prepare the connection for accurate assembly before the actual fastening occurs. Pre-formed recesses, guides, and tolerance-built interfaces ensure proper positioning is achieved automatically, reducing the skill level required for successful installation
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 system enables quick, cost-effective assembly of railings with reduced material costs and simplified installation, achieving a balance between ease of assembly and structural stability.
Implementation Method 1
the second element is clamped in a simple manner between the first element and the fastening body
Implementation Method 2
a first radius and a second radius, which are different from one another, extending from the longitudinal axis
Data Source
Figure 1a~1c
Figure 2a~2c
Figure 3a~3c
AI summary
A mounting system (100, 200, 300) comprising a first element (100) and a second element (200), in particular a railing post (100) and a railing end (200) or a railing post (100) and a railing crossbar (200), respectively, as well as a fastening body (300) with a longitudinal axis (350). The fastening body (300) has a first radius (360) perpendicular to the longitudinal axis (350) in a first radial direction and a second radius (361) different from the first radius (360) in a second radial direction perpendicular to the longitudinal axis (350). The fastening body (300) is rotatably mounted on the first element about the longitudinal axis (350).The first element (100) comprises a support for the second element (200), which is arranged and designed such that the second element (200) is held in a force-fit position between the fastening body (300) and the support of the first element (100) when the fastening body (300) is aligned with the second radial direction (361) in the direction of the support.