Automatic Drop Seatpost Using Mechanical Energy Storage
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Solution Overview
Problem
Current adjustable bicycle seatposts require a power source or user weight to lower the seatpost, which is inconvenient and time-consuming, especially during climbing or descending, and often necessitate holding a button, making the process awkward.
Innovation Solution
An automatic drop seatpost system incorporating an upper post, main post, control tube, tension spring, and hydraulic reset, allowing the seatpost to be lowered without user weight or power source, utilizing a combination of air springs and pull-down springs with a control mechanism and pawls to lock and unlock positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a power source is used to lower the seatpost, then the seatpost can be adjusted automatically, but the device complexity increases and requires maintenance
Solution Approach 1:
The seatpost system uses the rider's own weight and body movement to automatically trigger the drop mechanism. The compression spring is compressed by the rider's weight during normal riding, which automatically activates the hydraulic reset to lower the seatpost without requiring external power sources or additional complex mechanisms.
Solution Approach 2:
The patent replaces electrical or motorized power sources with a purely mechanical system using compression springs and hydraulic principles. The mechanical energy stored in the compression spring is converted to hydraulic pressure to automatically lower the seatpost, eliminating the need for batteries, motors, or electronic controls.
2Device complexity
If user weight is required to compress the seatpost, then no power source is needed, but the operation becomes inconvenient and time-consuming
Solution Approach 1:
The compression spring is pre-loaded during normal riding when the rider applies weight to the seatpost. This preliminary compression stores mechanical energy that is later released to automatically lower the seatpost, eliminating the need for the rider to manually compress or activate the mechanism during the actual drop moment.
Solution Approach 2:
The system automatically uses the rider's body weight and movement to trigger the drop mechanism. The hydraulic reset mechanism is activated by the natural compression of the spring during riding, allowing the seatpost to lower itself without requiring separate manual intervention or complex operating procedures.
3Adaptability or versatility
If a button must be held down during adjustment, then the mechanism can be controlled, but the operation becomes awkward and inconvenient
Solution Approach 1:
The system eliminates the need for manual button operation by using automatic trigger mechanisms. The compression of the spring during normal riding automatically activates the hydraulic reset, and the seatpost lowers itself without requiring the rider to hold or manipulate any controls during the adjustment process.
Solution Approach 2:
The patent replaces manual button control with an automatic mechanical trigger system. The compression spring and hydraulic reset work together to automatically initiate and control the seatpost lowering process, eliminating the need for separate control buttons or levers that require continuous manual pressure.
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 seamless adjustment of the seatpost to lower positions without manual effort or power source, enhancing convenience and efficiency during biking, and allows for easy retraction to the original position when needed.
Implementation Method 1
The upper post can include a compression spring
Implementation Method 2
The tension spring can be configured to pull the upper post to the main post
Implementation Method 3
The hydraulic reset can be configured to compress the compression spring
Implementation Method 4
The air spring can include an upper air spring and a lower air spring
Data Source
AI summary
An apparatus including a seat post. The seat post can include an upper post, a lower post, a first mechanical energy source, a second mechanical energy source, and a control mechanism. The first mechanical energy source can be configured to contract the lower post and the upper post. The second mechanical energy source can be configured to expand the lower post and the upper post. The control mechanism can be configured to activate the first mechanical energy source to contract the lower post and the upper post to a first predetermined position.