Foldable Handle Mechanism for Self-Balancing Scooter
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Solution Overview
Problem
Current self-balancing electrical scooters face issues with control operation in the left-right direction due to the connection structure between the handle and scooter body, starting difficulties and safety risks, poor wheel connection performance, non-foldable handles, and complex motor shaft connections leading to unstable running.
Innovation Solution
A resilient recoverable component with a stator and rotor connected via a rubber unit between the scooter body and handle for improved directional control, a gravity sensing assembly for safe startup, a robust wheel connection using a flange nut and axle sleeve, a foldable handle mechanism, and a simplified motor shaft connection within a wheel bracket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the handle is rigidly connected to the scooter body for stable control, then control precision is improved, but the handle cannot be folded and portability deteriorates
Solution Approach 1:
The handle connection structure transitions from a rigid fixed state during operation to a foldable storage state. The connection allows the handle to be firmly fixed to the scooter body during riding for precise control, and can be folded to a predetermined angle for compact storage and portability.
2Productivity
If the operation switch is activated before the rider stands on the scooter, then the scooter can start immediately, but safety deteriorates due to unbalanced status and risk of running into the rider
Solution Approach 1:
The gravity sensing assembly detects the rider's weight in advance and triggers the control system to activate the operation switch only after the rider is properly positioned on the scooter. This preliminary detection ensures the scooter is in a balanced state before starting, preventing unsafe startup conditions.
Solution Approach 2:
The gravity sensing assembly continuously monitors the rider's position and weight distribution, providing feedback to the control system. The control system uses this feedback to determine the appropriate timing for activation, ensuring the scooter starts only when the rider is correctly positioned and the system is in a safe balanced state.
3Power
If the connection structure between motor shaft and wheels is complex for precise power transmission, then power transmission efficiency is improved, but device complexity increases causing unstable running
Solution Approach 1:
The patent extracts and eliminates unnecessary intermediate connection components from the motor shaft to wheel power transmission path. By simplifying the connection structure to essential elements only, the design achieves reliable power transmission while reducing structural complexity and improving running stability.
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
Enhances controllability and safety during startup, improves wheel attachment stability, reduces storage space with a foldable handle, and provides steady travel conditions by addressing the complex connection issues.
Implementation Method 1
the rotor returns to its original status under an elastic recovery force of the resilient recoverable unit
Implementation Method 2
A signal sensing device is set in a chassis of the self-balancing double-wheeled electrical scooter under a foot pedal
Data Source
AI summary
A self-balancing double-wheeled electrical scooter is provided with an assembly for controlling a travel direction of the self-balancing double-wheeled electrical scooter, wherein, the travel direction of the self-balancing double-wheeled electrical scooter is controlled via a handle, a resilient recoverable component is provided between a scooter body and the handle, the handle is adapted for driving the resilient recoverable component to control the travel direction of the scooter, the resilient recoverable component comprises a stator (101), a rotor (112) and a resilient recoverable unit (111), the rotor (112) is mechanically connected to the handle in a fixed manner directly or indirectly, the stator (101) is mechanically connected to the scooter body (107) in a fixed manner directly or indirectly, the stator (101) and the rotor (112) are connected in a resilient manner via the resilient recoverable unit, the resilient recoverable component further comprises an angle limiting device, the angle limiting device comprises a limiting cover (103) and a limiting pin (105), the limiting cover (103) is mechanically connected to the stator (101) in a fixed manner directly or indirectly, a limiting hole is provided on the limiting cover (103), the limiting pin (105) is mechanically connected to the rotor (112) in a fixed manner directly or indirectly, and the rotation of the rotor (112) causes the limiting pin (105) to rotate within a certain angle range inside the limiting hole on the limiting cover (103).