Self-Balancing Scooter Handle Resilient Control and Foldable Mechanism
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Solution Overview
Problem
Current self-balancing electrical scooters face issues with control operation in the left-right direction, difficult starting mechanisms, poor wheel connection to the scooter body, 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 for improved direction control, a gravity sensing assembly for safe startup, a flange nut and crescent unit for secure wheel attachment, a foldable handle mechanism, and a simplified motor shaft connection using a wheel bracket with interference-fit bearings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a direct connection structure between handle and scooter body is used, then control operation in left-right direction is influenced, but structural simplicity is maintained
Solution Approach 1:
A resilient recoverable component is introduced as an intermediary between the handle and scooter body. This component includes a stator connected to the scooter body, a rotor connected to the handle, and a resilient recoverable unit connecting them. The intermediary structure isolates the handle control from direct rigid connection, improving control operation while maintaining reasonable structural complexity.
2Ease of operation
If operation switch is configured on handle, then scooter can be turned on, but rider must stand beside scooter which is difficult and dangerous
Solution Approach 1:
The operation switch is relocated from the handle to the scooter body frame, allowing the rider to turn on the scooter while standing on it or beside it in a stable position. This preliminary positioning of the switch enables safe startup operation without requiring the rider to lean over or reach for the handle before the balancing system is active.
3Ease of manufacture
If simple wheel connection structure is used, then assembly is easy, but connection performance is poor and wheels may detach
Solution Approach 1:
The wheel connection structure is segmented into multiple components: a connection plate welded to the scooter body, a separate fastening mechanism with bolts and nuts, and a resilient recoverable unit. This segmentation allows for robust connection performance through multiple attachment points while maintaining ease of assembly through modular construction.
4Stability of the object's composition
If handle is made non-foldable, then structural stability is maintained, but space is wasted and portability is reduced
Solution Approach 1:
The handle is designed with a foldable mechanism that allows it to transition between extended and folded positions. The handle bar can be rotated relative to the connection plate, enabling the handle to adapt its configuration. This dynamic design maintains structural stability when extended for use while reducing storage volume when folded for portability.
5Reliability
If complex motor shaft connection structure is used, then connection is secure, but running stability is reduced
Solution Approach 1:
The motor shaft connection structure is simplified by extracting unnecessary intermediate components. The motor shaft is directly connected to the wheel hub through a streamlined coupling mechanism, eliminating complex transmission elements. This extraction of redundant parts maintains secure connection while improving running stability through reduced mechanical complexity and fewer potential failure points.
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, safety during startup, stability, and convenience with a foldable design, while ensuring secure wheel attachment and smooth motor operation.
Implementation Method 1
the rotor returns to its original status under an elastic recovery force of the resilient recoverable unit
Implementation Method 2
a gravity sensing assembly for safe startup
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).