Bicycle Saddle Adjustment Mechanism for Dynamic Height and Angle Control
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Solution Overview
Problem
Cyclists face challenges in adjusting the height and angle of their bicycle saddles during rides to optimize power efficiency and comfort, as existing systems lack efficient mechanisms for on-the-fly adjustments that prevent clothing entanglement and injury.
Innovation Solution
A saddle adjustment assembly that includes an adjustable height saddle post with a saddle angle adjustment mechanism, allowing the saddle to be raised or lowered and angled relative to the bicycle frame, using a combination of radially expandable collets, lead screws, and biasing mechanisms to lock and unlock positions, enabling the saddle to rotate and adjust while riding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the saddle height is adjusted during riding, then power efficiency and comfort are improved, but the risk of clothing entanglement and injury increases
Solution Approach 1:
The saddle adjustment system enables dynamic height adjustment during riding by using a lead screw mechanism that converts rotational motion to linear motion, allowing the saddle post to move between extended and retracted positions while maintaining control and stability
Solution Approach 2:
The patent introduces an intermediary locking mechanism using a radially expandable collet that engages with a groove in the saddle post to lock the lead screw in place, preventing unintended movement and ensuring safe operation during adjustment
2Productivity
If the saddle angle is adjusted during riding, then comfort and power efficiency are optimized, but the complexity of the adjustment mechanism increases
Solution Approach 1:
The patent combines the saddle angle adjustment function with the existing height adjustment mechanism by integrating the lead screw into the saddle post structure, allowing both height and angle adjustments to be made through a unified system rather than separate mechanisms
Solution Approach 2:
The adjustment mechanism is designed to be self-locking through the radially expandable collet that automatically engages with the groove in the saddle post when the lead screw is rotated, eliminating the need for separate locking operations and simplifying user interaction
3Adaptability or versatility
If on-the-fly saddle adjustment is enabled, then adaptability to riding conditions is improved, but the reliability of the adjustment system decreases
Solution Approach 1:
The system provides dynamic adaptability by allowing real-time height and angle adjustments during riding through the lead screw mechanism, enabling cyclists to respond to changing conditions without removing the saddle from the bicycle
Solution Approach 2:
The radially expandable collet acts as a reliable intermediary locking element that positively engages with the groove in the saddle post, providing secure locking at multiple positions and preventing accidental displacement during riding
4Ease of operation
If multiple adjustment positions are provided, then ease of operation is improved, but the device complexity increases
Solution Approach 1:
The lead screw mechanism provides continuous adjustable positions rather than fixed discrete positions, allowing the saddle height and angle to be adjusted to any point within the range of motion, greatly enhancing ease of operation for different riding conditions
Solution Approach 2:
The radially expandable collet provides automatic locking at multiple positions without requiring separate locking operations, as the collet expands radially to engage with the groove in the saddle post whenever the lead screw is rotated to a new position
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 cyclists to adjust the saddle height and angle dynamically, enhancing power efficiency and comfort by preventing clothing entanglement and reducing the risk of injury during various riding conditions.
Implementation Method 1
a radially expandable collet that selectively engages a groove of the saddle post to lock the actuating member in the first and second predetermined positions
Implementation Method 2
an actuating member slidably coupled with the saddle post such that the actuating member can translate, in a direction parallel to a longitudinal axis of the saddle post
Implementation Method 3
a saddle support arm configured to couple to a bicycle saddle, the saddle support arm rotatably coupled to the saddle post and the actuating member such that translation of the actuating member with respect to the saddle post causes the saddle support arm to rotate with respect to the saddle post
Data Source
AI summary
A bicycle assembly comprises a saddle adjustment assembly, the saddle adjustment assembly comprising: a saddle post configured to attach to a bicycle frame; an actuating member slidably coupled with the saddle post such that the actuating member can translate, in a direction parallel to a longitudinal axis of the saddle post, between at least first and second predetermined positions, the actuating member comprising a saddle angle locking device that selectively locks the actuating member in the first and second predetermined positions; and a saddle support arm configured to couple to a bicycle saddle, the saddle support arm rotatably coupled to the saddle post and the actuating member such that translation of the actuating member with respect to the saddle post causes the saddle support arm to rotate with respect to the saddle post.