Bicycle Propelling Device Using Hand Grip Levers
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Solution Overview
Problem
Conventional hand and foot bicycles struggle to maintain balance due to the simultaneous requirement of generating power with the arms and controlling orientation, leading to instability and inefficiency, as they complicate the structure and increase weight when attempting to incorporate arm power.
Innovation Solution
A bicycle propelling device that utilizes the gripping force of both hands through lever mechanisms and strings connected to a free wheel, allowing additional power to be generated without altering the bicycle's structure, enabling balanced propulsion by integrating the propelling mechanism with the conventional brake levers and minimizing weight increase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If power is generated by using the force of the arms in conventional hand and foot bicycles, then additional propelling power is obtained, but orientation control cannot be performed simultaneously and the bicycle loses balance
Solution Approach 1:
The invention separates the functions of power generation and orientation control by dividing the arm's capability into two independent components: gripping force for power generation and orientation control for balance. This allows both functions to operate simultaneously without interference, resolving the contradiction between obtaining additional power and maintaining balance stability.
Solution Approach 2:
The hands are made to serve dual purposes: generating propelling power through gripping force on the lever mechanisms while simultaneously controlling orientation through the handle. This multi-functionality allows the same body parts to perform both power generation and balance control, eliminating the trade-off between these functions.
2Power
If the structure is modified to incorporate arm power generation, then additional propelling capability is achieved, but the structure becomes complicated and weight increases
Solution Approach 1:
The invention merges the new propelling mechanism with existing bicycle components. The lever mechanisms are integrated with the handle structure, and the string transmission system utilizes the existing frame and wheel assembly. This combining approach adds arm power generation capability while minimizing structural complexity and weight increase.
Solution Approach 2:
Existing components are made to serve multiple functions. The handle structure simultaneously serves as the grip for arm power generation and the control mechanism for orientation. The string transmission system is integrated with the existing chain and wheel assembly, allowing the same structural elements to handle both new and traditional power transmission.
3Adaptability or versatility
If the lever mechanisms and strings are added to the bicycle structure, then gripping force can be utilized for propulsion, but the structure becomes more complex
Solution Approach 1:
The string acts as an intermediary element that connects the lever mechanisms to the wheel shaft. This simple intermediary component transmits the gripping force from the hands to the propulsion system without requiring complex mechanical linkages, thereby adding power generation capability while keeping the mechanism relatively simple.
Solution Approach 2:
The invention replaces a potentially complex mechanical power transmission system with a simpler string-based transmission system. Instead of using rigid linkages, gears, or belts to transmit arm power to the wheel, the patent uses flexible strings that can be easily routed and connected, reducing overall mechanism complexity while maintaining adaptability.
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 device provides selective additional power when needed, maintaining the balance and efficiency of a conventional bicycle by using the combined gripping force of both hands, overcoming the balance issues of conventional hand and foot bicycles while maintaining the original characteristics and functionality.
Implementation Method 1
a free wheel configured to transfer power to a wheel only in one rotation direction as the strings are pulled
Implementation Method 2
lever mechanisms; strings configured to be pulled by the lever mechanisms
Data Source
AI summary
The present invention relates to a bicycle propelling device capable of transferring power to a bicycle wheel by using the gripping force of both hands. The present propelling device uses the gripping force, and thus overcomes the problem of prior art hand and foot bicycles in which balance is easily lost during driving because the prior art hand and foot bicycles require the use of the arms. The propelling device can be used together with a pedaling operation when greater power is required while the user is riding the bicycle as usual, thereby improving the running efficiency of the bicycle. Furthermore, the propelling device is formed by combining simple devices including a string and a freewheel, and thus a bicycle can maintain the original structure thereof as it is, so that it does not cause any disadvantage or difference when the user rides the bicycle by stepping on pedals in a conventional manner.