Motorcycle Height Adjustment via Spring Length and Back Pressure Control
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Solution Overview
Problem
Existing vehicle height adjustment apparatuses for motorcycles lack high accuracy in controlling valves for fluid supply and discharge, affecting the precision of vehicle height adjustments.
Innovation Solution
A vehicle height adjustment apparatus comprising a spring, a changing device, a first valve, a back pressure adjustment valve, and a second valve, which accurately control fluid flow paths to adjust the vehicle height by changing the spring length in response to fluid levels, ensuring precise operation of the valves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a valve is used for supplying fluid to the accommodation chamber or stopping the supply, then the vehicle height can be adjusted, but the valve operation accuracy is insufficient
Solution Approach 1:
The patent introduces a back pressure chamber as an intermediary component between the pump and the accommodation chamber. This back pressure chamber receives fluid from the pump and supplies it to the accommodation chamber, acting as a mediator that stabilizes the fluid supply process. The back pressure chamber maintains a stable pressure environment, which improves the reliability of valve operation and consequently enhances the precision of vehicle height adjustment.
2Length of moving object
If the vehicle height is adjusted by changing the spring length in response to fluid levels, then the vehicle height can be changed, but the valve control accuracy affects the overall adjustment precision
Solution Approach 1:
The patent implements a feedback mechanism where the fluid level in the accommodation chamber directly influences the spring length, which in turn affects the vehicle height. The back pressure chamber monitors the fluid supply status and adjusts the pressure accordingly, creating a closed-loop feedback system. This feedback mechanism ensures that the spring length changes precisely in response to fluid level changes, thereby improving vehicle height control accuracy despite the complexity of the system.
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 high-accuracy operation of the valve system, allowing for precise control of vehicle height adjustments, enhancing the apparatus's ability to raise or lower the motorcycle with increased precision.
Implementation Method 1
The spring has one end supported on a vehicle body side, and the other end supported on a wheel side. The changing device changes a length of the spring in accordance with an amount of fluid in an accommodation chamber
Implementation Method 2
a back pressure adjustment valve that opens and closes a discharge flow path oriented toward the storage chamber from a back pressure chamber that accommodates the fluid that applies a force in a direction in which the first valve is closed to the first valve
Data Source
AI summary
A vehicle height adjustment apparatus according to one embodiment includes a spring, a spring-length changing unit, a first valve, a control valve and a second valve. The spring-length changing unit changes a length of the spring in accordance with an amount of oil in a jack chamber that accommodates the oil. The first valve opens and closes a first communication path in which the oil supplied from a pump is oriented toward a reservoir chamber that stores the oil. The control valve opens and closes a discharge flow path oriented toward the reservoir chamber from a chamber that accommodates the oil to close the first valve. The second valve opens and closes a second communication path in which the oil supplied from the pump is oriented toward the jack chamber when the first valve is closed.