Universal Joint with Integrated Torsion Bars
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Solution Overview
Problem
Existing universal joints are bulky, heavy, and costly due to their complex structure with multiple moving parts, which complicates their design and manufacturing.
Innovation Solution
A simplified universal joint design utilizing coaxial cylindrical bands with integrated torsion bars and stiffeners that allow articulation through elastic deformation, eliminating the need for relative movement between parts and reducing the number of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a traditional universal joint with multiple moving parts is used, then it can provide articulation between two elements, but it becomes bulky, heavy, and costly to produce
Solution Approach 1:
The patent merges multiple separate components (bands, torsion bars, stiffeners) into an integrated elastic body where these elements are monolithically formed or closely coupled. This consolidation eliminates the need for separate moving parts while maintaining the articulation function through elastic deformation of the integrated structure.
Solution Approach 2:
The patent replaces the traditional mechanical system with moving parts and joints with an elastic deformation-based system. Instead of rigid components connected by movable joints, the universal joint uses an elastic body that deforms flexibly to accommodate articulation, eliminating friction and complex mechanical connections.
2Device complexity
If a traditional universal joint with multiple moving parts is used, then it can provide articulation between two elements, but it becomes bulky and costly to produce
Solution Approach 1:
The patent merges multiple separate components (bands, torsion bars, stiffeners) into an integrated elastic body where these elements are monolithically formed or closely coupled. This consolidation eliminates the need for separate moving parts while maintaining the articulation function through elastic deformation of the integrated structure.
3Device complexity
If multiple moving parts are used in the universal joint, then articulation can be achieved, but the joint becomes bulky
Solution Approach 1:
The patent replaces the traditional mechanical system with moving parts and joints with an elastic deformation-based system. Instead of rigid components connected by movable joints, the universal joint uses an elastic body that deforms flexibly to accommodate articulation, eliminating friction and complex mechanical connections.
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 results in a lightweight, cost-effective universal joint with a simple structure that effectively transmits rotational motion while bearing tensile and compressive forces, enhancing mechanical efficiency and reducing production costs.
Implementation Method 1
When the universal joint 100 is loaded, the torsion bars 106a-b deform in torsion. Each torsion bar 106a-b tends to deform by twisting about its axis.
Implementation Method 2
The stiffeners 108a-b make it possible to stiffen the universal joint 100 in order to bear the force due to compression (force along the axis 15).
Data Source
Figure 1
AI summary
The invention relates to a universal joint (100) comprising: - a first band (102a) and a second band (102b) which are separated by a slot (104), are cylindrical and coaxial with one another with respect to a common axis (15), and - a first torsion bar (106a), whose ends are joined to the first band (102a), and a second torsion bar (106b) whose ends are joined to the second band (102b). Such a universal joint (100) thus has a relatively simple structure.