Adjustable Pneumatic-Hydraulic Pressure Unit for Bicycle Saddle Memory
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional bicycle pneumatic-hydraulic saddle lifting devices lack a memory function, requiring repeated adjustment of the saddle height each time the bicycle is retracted, leading to an unsatisfactory user experience.
Innovation Solution
An adjustable pneumatic-hydraulic pressure unit with a cylinder, inner and outer tubes, and valve groups that control oil passage conduction to adjust the actuating tube's stroke, incorporating a stroke memory function by balancing pneumatic-hydraulic pressure and oil-gas mixing, allowing the saddle height to be set and remembered.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional pneumatic-hydraulic saddle lifting device is used, then the structure is simple, but it lacks memory function requiring repeated adjustment
Solution Approach 1:
The device is divided into separate functional modules: a first valve group for controlling oil passage between the oil-gas mixing chamber and lower oil chamber, and a second valve group for controlling oil passage between upper and lower oil chambers. This segmentation allows independent control of different functions (adjustment vs. memory) while maintaining overall system simplicity.
Solution Approach 2:
An oil-gas mixing chamber is introduced as an intermediary element between the pneumatic and hydraulic systems. The chamber mixes oil and gas to create a compressible fluid medium that enables both the lifting function and the memory function (by compressing under load and maintaining position). This intermediary resolves the contradiction by adding functionality without requiring a completely new system architecture.
2Adaptability or versatility
If stroke adjustment function is added, then user experience is improved, but the device complexity increases
Solution Approach 1:
The pneumatic-hydraulic pressure unit is designed to perform multiple functions: it provides lifting force through the oil-gas mixing chamber, maintains position through the memory function, and enables stroke adjustment through the valve groups. By making the system multi-functional, the patent avoids needing separate devices for each function, thereby managing complexity while enhancing adaptability.
Solution Approach 2:
The device incorporates dynamic adjustment capabilities through the first and second valve groups, which can open or close oil passages to control the flow of oil between chambers. This dynamic control allows the stroke to be adjusted during operation, providing versatility while using a relatively compact integrated structure rather than multiple fixed components.
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 provides a bicycle saddle with a memory function, enabling seamless height adjustment and storage, enhancing user experience by allowing the saddle height to be set and maintained without repeated adjustments.
Implementation Method 1
the present invention provides an adjustable pneumatic-hydraulic pressure unit for stroke control mainly by balancing the pneumatic-hydraulic pressure within the unit
Implementation Method 2
the inner surface of the outer tube, the outer surface of the inner tube, the oil seal, and the first valve group together forming an oil-gas mixing chamber
Data Source
AI summary
An adjustable pneumatic-hydraulic pressure unit for stroke control including a cylinder and an actuating tube, an oil seal valve seat, a piston valve seat, and a plurality of pistons to form a plurality of oil chambers and a plurality of oil passages; whereby a piston is used to close to block or to open to conduct the oil passages, causing the oil-gas filled passages to form an internal pressure, which controls the actuating tube to be contracted downward or restored upward relative to the cylinder, so that the total exposed stroke of the actuating tube can be adjusted, and forms the pneumatic-hydraulic pressure unit with the function of stroke memory to cater the needs for riding and storing bicycles.