Front Wheel Frame Structure with Multi-Functional Handle Support
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Solution Overview
Problem
Conventional front wheel supporting frame structures for saddle-ride vehicles lack optimal cushioning and handle positioning, leading to suboptimal ride quality and operability.
Innovation Solution
A front wheel supporting frame structure featuring a main frame with upper and lower arms that allow the front wheel to swing, a cushion member that expands and compresses for cushioning, and a handle supporting portion that enables the handle to turn about a steering axis, with the cushion member's upper end connected to the handle supporting portion and its lower end connected to the lower arm, enhancing both ride quality and handle operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cushion member is connected to the main frame at a position behind the upper connection portion, then the cushion stroke is lengthened and ride quality is improved, but the handle supporting portion structure becomes more complex
Solution Approach 1:
The handle supporting portion is designed to serve dual functions: it supports the handle for steering operations and simultaneously serves as the upper connection point for the cushion member. This multi-functional design allows the cushion member to be connected behind the upper connection portion, extending the cushion stroke and improving ride quality, without requiring additional structural elements that would increase complexity.
Solution Approach 2:
The patent merges the handle support function and the cushion member connection function into a single integrated structure. By combining these two functions at the same location (the handle supporting portion), the design achieves a longer cushion stroke while avoiding the need for separate connection structures, thus maintaining structural simplicity.
2Ease of operation
If the handle supporting portion is positioned to extend upward behind the upper connection portion, then handle operability is enhanced, but the frame structure becomes more complex
Solution Approach 1:
The handle supporting portion is designed as a multi-functional element that simultaneously provides handle support for improved operability and serves as the connection point for the cushion member. This integration allows the portion to extend upward behind the upper connection portion, enhancing handle positioning and steering control, without requiring additional frame structures.
3Device complexity
If the cushion member is connected to the lower arm, then the suspension system becomes simpler, but frame vibrations are not effectively suppressed
Solution Approach 1:
The cushion member acts as an intermediary element that connects the lower arm to the handle supporting portion. This intermediate connection allows the cushion member to absorb and dampen vibrations from the lower arm before they reach the main frame, effectively suppressing frame vibrations while maintaining a relatively simple suspension system structure.
Solution Approach 2:
The patent converts the potential harmful effect of vibrations transmitted through the lower arm connection into a beneficial cushioning effect. By routing the cushion member through the handle supporting portion, the system transforms vibration energy into controlled compression and expansion of the cushion member, thereby suppressing harmful frame vibrations while maintaining structural simplicity.
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
This configuration improves ride quality by providing a longer cushion stroke and reduces frame weight, while also enhancing handle operability and stiffness, and suppressing frame vibrations.
Implementation Method 1
a cushion member which is expanded and compressed according to a movement of the front wheel to provide a cushioning effect
Implementation Method 2
a cushion member which is expanded and compressed according to a movement of the front wheel to provide a cushioning effect
Implementation Method 3
an upper end portion of the cushion member is swingably connected to the handle supporting portion
Implementation Method 4
a lower end portion of the cushion member is swingably connected to the lower arm
Implementation Method 5
a handle supporting portion by which a handle is supported to be turnable about a steering axis
Data Source
AI summary
A cushion member is swingable with respect to a main frame about a fourth rotation axis to be expanded and compressed according to a movement of a front wheel. A first arm is swingable with respect to a front fork supporting member about a fifth rotation axis and with respect to the main frame about a sixth rotation axis. A second arm is swingable with respect to the front fork supporting member about a seventh rotation axis, with respect to the cushion member about an eighth rotation axis, and with respect to the main frame about a ninth rotation axis. The fourth to ninth rotation axes are substantially parallel to one another. The fourth rotation axis is provided to be substantially perpendicular to a plane including a second rotation axis about which the front fork is turnable.