Bicycle Seatpost Assembly Dual-Range Adjustment Mechanism
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Solution Overview
Problem
Current bicycle seatpost assemblies lack a versatile mechanism for continuously adjustable length within distinct operational ranges, limiting user customization and precision in adjusting the seat height.
Innovation Solution
A bicycle seatpost assembly with a positioning structure that includes a first and second cylinder, where the second cylinder is telescopically received in the first cylinder, and a movable member that switches between different passageways to change the fluid communication, allowing the assembly to switch between two adjustable states with unique position ranges, enabling continuous adjustment of the overall length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single adjustable range mechanism is used, then the structure is simple, but the adaptability for different user needs is limited
Solution Approach 1:
The positioning structure is divided into two independent positioning mechanisms: a first positioning mechanism with a first cylinder and first piston for the first adjustable position range, and a second positioning mechanism with a second cylinder and second piston for the second adjustable position range. This segmentation allows each mechanism to be optimized for its specific range while collectively providing extended adaptability across multiple ranges.
2Ease of operation
If telescopic cylinders are used for continuous adjustment, then the ease of operation is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The second cylinder is telescopically received within the first cylinder, creating a nested configuration. The first piston rod extends from the first cylinder and couples to the second piston, while the second piston rod extends from the second cylinder. This nesting arrangement allows continuous adjustment across two distinct ranges while maintaining compact packaging and reducing the overall extended length.
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 precise and flexible adjustment of the seatpost length within different operational ranges, enhancing user customization and comfort by allowing continuous adjustment from maximum to minimum lengths through distinct operational states.
Implementation Method 1
a movable member that switches between different passageways to change the fluid communication, allowing the assembly to switch between two adjustable states with unique position ranges
Data Source
AI summary
A bicycle seatpost assembly comprises a first cylinder, a second cylinder, and a positioning structure. The second cylinder is configured to be telescopically received in the first cylinder. The positioning structure is configured to relatively position the first cylinder and the second cylinder. The positioning structure is configured to switch a state of the bicycle seatpost assembly among a first adjustable state and a second adjustable state. In the first adjustable state, a positional relationship between the first cylinder and the second cylinder is continuously adjustable within a first adjustable position range. In the second adjustable state, the positional relationship between the first cylinder and the second cylinder is continuously adjustable within a second adjustable position range different from the first adjustable position range.