Hydraulic Telescopic Bicycle Unit With Offset Cam Actuation
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Solution Overview
Problem
Existing telescopic apparatuses for human-powered vehicles lack flexibility and compactness, with complex structures that hinder efficient adjustment and control.
Innovation Solution
A telescopic apparatus featuring a hydraulic chamber system with a cam member and actuator, allowing for fluid communication control and cam follower positioning through a rotatable cam member with multiple cam surfaces, enabling compact design and simplified structure for flexible adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the actuator and cam member are arranged in a conventional configuration, then the structure is simple, but the flexibility of arrangement is poor and the overall size is large
Solution Approach 1:
The patent applies dimensionality change by offsetting the actuation rotational axis from the cam member's rotational axis in a direction perpendicular to both the rotational axis and the actuation rotational axis. This creates a three-dimensional spatial relationship that allows the actuator and cam member to be arranged more flexibly in space, improving adaptability while maintaining structural simplicity through the offset axis configuration
2Adaptability or versatility
If the rotational components are arranged with aligned axes, then the structure is simple, but the flexibility of arrangement is limited
Solution Approach 1:
The patent utilizes spatial arrangement by positioning the actuation rotational axis offset from the cam member's rotational axis in a direction perpendicular to both axes. This three-dimensional configuration allows compact packaging of the actuator and cam member while maintaining arrangement flexibility, effectively reducing the overall volume occupied by these components
3Adaptability or versatility
If multiple cam surfaces are used to position the cam follower at multiple locations, then the positioning capability is improved, but the cam member structure becomes more complex
Solution Approach 1:
The patent applies multi-functionality by providing multiple cam surfaces on the cam member that can position the cam follower at different locations. Each cam surface serves a specific positioning function, allowing the cam member to perform multiple positioning operations. This universal design enables the cam member to control different components or perform different functions while maintaining a unified structure
Solution Approach 2:
The cam member is segmented into multiple distinct cam surfaces, each responsible for positioning the cam follower at a specific location. This segmentation allows independent optimization of each cam surface for its specific function while keeping the overall cam member structure manageable and organized
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 apparatus achieves improved flexibility and compactness, allowing for precise control and reliable positioning of the cam follower, enhancing the telescopic apparatus's functionality and user experience.
Implementation Method 1
a first hydraulic chamber (C1) and a second hydraulic chamber (C2) that are movable relative to one another in a telescopic direction (D1)
Data Source
AI summary
A telescopic apparatus for a human-powered vehicle comprises a first hydraulic chamber, a second hydraulic chamber, a valve member, a cam member, and an actuator. The second hydraulic chamber is configured to be in fluid communication with the first hydraulic chamber. The valve member is configured to control a fluid communication between the first hydraulic chamber and the second hydraulic chamber. The cam member is rotatable about a rotational axis to move the valve member in a movement direction. The actuator is configured to rotate the cam member. The actuator includes an output shaft rotatable about an actuation rotational axis. The actuation rotational axis is offset from the rotational axis as viewed in the movement direction.