Modular Drive and Cargo Bicycle System for Versatile Transport
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Solution Overview
Problem
Cargo bicycles are bulky and unsuitable for recreational riding, necessitating the purchase of a separate two-wheeled bicycle for exercising or recreational purposes, leading to increased costs and inefficiencies.
Innovation Solution
A drive module for bicycles that includes a bicycle frame, main shaft, rear wheel, fork, electric actuator, and batteries, which can be combined with a cargo module featuring a base, connecting beam, fork connecting part, cargo front wheels, and steering unit to convert a regular bicycle into a cargo bicycle, allowing for easy conversion between cargo and two-wheeled modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cargo bicycle is designed with three wheels and a large cargo area, then it can carry heavy loads safely, but it becomes bulky and slow, making it unsuitable for recreational riding
Solution Approach 1:
The cargo bicycle system is divided into separate modules: a drive module (two-wheeled bicycle with motor) and a cargo module (detachable cargo platform with wheels). These modules can be coupled together for cargo transport or separated for recreational riding, allowing the system to adapt between stable cargo carrying and agile recreational use.
Solution Approach 2:
The configuration of the bicycle is made dynamic and adjustable. The cargo module can be detachably coupled to or decoupled from the drive module based on usage needs. This dynamic reconfiguration allows the same base vehicle to function as either a stable three-wheeled cargo bicycle or a maneuverable two-wheeled recreational bicycle.
2Reliability
If a cargo bicycle is designed for heavy load transport, then it can carry luggage effectively, but it requires purchasing a separate two-wheeled bicycle for recreational purposes, increasing costs
Solution Approach 1:
The drive module is designed as a universal base that can function in multiple configurations. By itself, it serves as a two-wheeled recreational bicycle. When coupled with the cargo module, it becomes a three-wheeled cargo bicycle. This multi-functionality eliminates the need to purchase separate bicycles for different purposes.
Solution Approach 2:
The invention merges the recreational bicycle function and cargo transport function into a single integrated system. The drive module and cargo module can be combined when needed for cargo work, and separated when needed for recreation, allowing one vehicle to replace what would traditionally require two separate bicycles.
3Reliability
If the connecting beam is inserted into the beam insertion hole to couple the cargo module, then the electrical connection is established, but the connecting beam must be prevented from being removed accidentally
Solution Approach 1:
The coupling pin is pre-configured to automatically engage with the coupling hole when the connecting beam is inserted into the beam insertion hole. This preliminary positioning ensures that the electrical connection is established first, and then the mechanical locking action secures the connection, preventing accidental removal while maintaining ease of intentional detachment.
Solution Approach 2:
The coupling pin acts as an intermediary locking mechanism between the connecting beam and the beam insertion hole. It provides a secure mechanical lock that prevents accidental removal of the electrically connected components, while still allowing easy removal by applying force to the coupling pin's head.
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 the use of a single bicycle for both cargo and recreational purposes, reducing costs by eliminating the need for separate bicycles and facilitating safe operation by establishing a parallel electrical connection between batteries, allowing extended motorized use and heavy load transport over long distances.
Implementation Method 1
When the connecting beam is inserted into the beam insertion hole, the beam-side terminal and the hole-side terminal may contact each other to establish an electrical connection
Implementation Method 2
an electric actuator configured to rotate the main shaft using electrical energy
Implementation Method 3
a main battery storing electrical energy to be supplied to the electric actuator
Data Source
AI summary
A drive module for a bicycle according to an aspect of the present invention, the drive module including a bicycle frame comprising a beam insertion hole into which a connecting beam is removably inserted, a main shaft rotatably provided on the bicycle frame, a rear wheel rotatably supported on the bicycle frame and configured to be rotated by rotational force from the main shaft, and a fork rotatably coupled to the bicycle frame.