Hinge Bush With Elastic Inelastic Sections for Pedal Rigidity
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Solution Overview
Problem
Conventional hinge bushes for vehicle pedal apparatuses fail to simultaneously prevent left and right movement of the pedal arm and secure lateral rigidity, leading to noise and reduced commercial value due to inadequate spacing removal and rigidity.
Innovation Solution
A hinge bush design featuring a cylindrical portion with a flange that includes an elastic section for spacing removal and an inelastic section for lateral rigidity, connected by an interface section to prevent stress transmission, and a slit for radial deformation, allowing for both elastic deformation and strong supporting force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a structure for preventing left and right spacing of the pedal arm is implemented, then lateral rigidity is improved, but the structure becomes complex and cannot be achieved by conventional hinge bushes
Solution Approach 1:
The flange is segmented into three distinct sections: an elastic section with smaller cross-sectional thickness for spacing removal, an inelastic section with larger cross-sectional thickness for lateral rigidity, and an interface section connecting them. This segmentation allows each section to perform its specific function independently, achieving both spacing prevention and rigidity without excessive structural complexity.
Solution Approach 2:
Different sections of the flange are designed with different cross-sectional thicknesses to provide different local properties. The elastic section has smaller thickness for flexibility and spacing removal, while the inelastic section has larger thickness for rigidity and stability. This local quality differentiation enables the single flange structure to achieve multiple functions simultaneously.
2Stability of the object's composition
If the flange is designed to remove spacing by elastic deformation, then left and right movement of the pedal arm is prevented, but stress may be transmitted to the inelastic section
Solution Approach 1:
The interface section serves as an intermediary element between the elastic section and the inelastic section. It prevents stress generated by the deformation of the elastic section from being transmitted to the inelastic section, allowing each section to perform its function independently without interference. This mediator structure protects the rigid inelastic section from stress while maintaining the spacing removal capability of the elastic section.
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 design effectively removes left and right movement of the pedal arm, enhances customer satisfaction, and increases lateral rigidity, thereby reducing noise and improving commercial value.
Implementation Method 1
an elastic section configured of removing spacing formed between the pedal arm and the pedal member by elastically deforming when coming in close contact with the pedal member
Implementation Method 2
the cylindrical portion is configured to remove radial spacing of the pedal arm by being radially elastically deformed by the slit
Data Source
AI summary
A hinge bush for a vehicle pedal apparatus may include a flange connected to a cylindrical portion may include an elastic section that elastically deforms when coming in contact with the internal side of a pedal member and an inelastic section that generates a strong supporting force, whereby it is possible to remove left and right spacing of the pedal arm through the elastic section and it is also possible to increase lateral rigidity of the pedal arm through the inelastic section.