Vehicle Hood Hinge Assembly for Quiet, Lubrication-Free Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hood hinges for vehicles are difficult to open and close, require external lubrication, produce noise, and are not robust against shocks and vibrations, while also being costly and requiring complex assembly.
Innovation Solution
A hood hinge design featuring a housing tube with rubber insulators and self-lubricated bushings, combined with torsion springs and a hinge pin, allowing for easy assembly and operation without external lubrication, and capable of supporting the hood at a desired angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing hood hinges use torsion bar mechanisms and gas struts, then the hood can be supported in an open position, but the hinge becomes difficult to open and close and requires external lubrication
Solution Approach 1:
The patent replaces the traditional torsion bar mechanism with a torsion spring system that operates within a housing tube. This substitution eliminates the need for external lubrication while maintaining the hood support function, making the hinge easier to operate without sacrificing reliability
Solution Approach 2:
The self-lubricated bushings in the patent provide automatic lubrication through their material properties (such as PTFE or other self-lubricating materials), eliminating the need for external lubrication maintenance while ensuring smooth operation of the hinge mechanism
2Reliability
If existing hood hinges use traditional mechanisms, then the hood can be supported, but the hinge produces excessive noise when opened or closed
Solution Approach 1:
The patent employs rubber insulators positioned between the housing tube and the bracket assembly. These rubber elements act as vibration dampers and noise isolators, absorbing the noise generated during hinge operation while maintaining the structural integrity and hood support function
Solution Approach 2:
The combination of rubber insulator material with the metal housing tube and bracket creates a composite structure that provides both mechanical support and acoustic isolation, reducing noise while maintaining the hood support capability
3Reliability
If existing hood hinges are designed for robustness against shocks and vibrations, then the hinge can withstand road vibrations, but the structure becomes complex and costly
Solution Approach 1:
The rubber insulators in the patent serve as vibration isolators that absorb shocks and dampen vibrations from the road. This simple yet effective use of elastomeric material provides robustness against vibrations without adding structural complexity or cost
Solution Approach 2:
The rubber insulator acts as an intermediary element between the metal housing tube and bracket, providing vibration isolation and shock absorption. This intermediary component protects the hinge mechanism from road vibrations while keeping the overall structure simple and cost-effective
4Ease of operation
If existing hood hinges require external lubrication, then the hinge can operate smoothly, but maintenance becomes complicated and costly
Solution Approach 1:
The self-lubricated bushings in the patent are made from materials that provide automatic lubrication (such as PTFE, graphite, or other self-lubricating materials). This self-service capability ensures smooth operation of the hinge without requiring external lubrication or maintenance, simplifying both manufacturing and long-term upkeep
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 provides a cost-effective, quiet, and durable hinge that absorbs shocks and vibrations, facilitating easy opening and closing of the vehicle hood, while being easily assembled from off-the-shelf components.
Implementation Method 1
A rubber insulator is disposed within each of the first and second ends of the housing tube
Implementation Method 2
a self-lubricated bushing is disposed within each rubber insulator
Implementation Method 3
A first torsion spring is disposed around the housing tube proximate to the first end of the housing tube
Data Source
AI summary
A hood hinge includes a hood mounting bar, a housing tube having first and second open ends, and a first bracket fixedly connecting the hood mounting bar to the housing tube. A rubber insulator is disposed within each of the first and second ends of the housing tube, and a self-lubricated bushing is disposed within each rubber insulator. A first torsion spring is disposed around the housing tube proximate to the first end of the housing tube. A second bracket has a base and first and second flaps extending from the base over the first and second ends of the housing tube, respectively, and a hinge pin is disposed through the first and second flaps, the self-lubricated bushings, and the housing tube.