Segmented Hub Mechanism for Compact Wheel Power Generation

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Solution Overview

Problem

Existing driving systems have bulky wheel assemblies due to large hub volumes required for power generation, leading to increased energy consumption and reduced dynamic performance.

Innovation Solution

A hub mechanism with a hub body featuring piston chambers and piston hole groups, along with piston assemblies that include piston plates and piston unit columns, allowing for efficient power generation while reducing the overall volume of the wheel assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If the hub volume is increased to meet power generation requirements, then the power generation capability is improved, but the wheel assembly volume increases making it bulky

Engineering Contradiction:
Improvepower generation capabilityVSAvoidwheel assembly volume
Core Design Contradiction:
PowerVSVolume of moving object

Solution Approach 1:

The hub is divided into multiple piston chambers (first piston chamber, second piston chamber, etc.) with multiple piston holes in each chamber. This segmentation allows the power generation function to be distributed across multiple smaller units rather than requiring a single large hub volume, thereby maintaining power generation capability while reducing overall wheel assembly volume.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple piston holes are arranged in a circular pattern within each piston chamber, utilizing the radial dimension of the hub. This dimensional arrangement maximizes the power generation surface area within the available hub volume, enabling efficient power generation without increasing the overall wheel assembly volume.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If tires are added to address vibration and comfort issues, then the shock absorption performance is improved, but the drive power loss increases significantly

Engineering Contradiction:
Improvevibration and comfortVSAvoiddrive power loss
Core Design Contradiction:
Object-affected harmful factorsVSLoss of energy

Solution Approach 1:

The piston assemblies within the hub generate power during wheel rotation, converting what would otherwise be wasted energy from wheel deformation into useful electrical energy. This self-service mechanism offsets the energy loss from tire deformation, maintaining drive power efficiency while achieving vibration reduction and comfort improvement.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system converts the harmful effect of tire deformation (which causes vibration and energy loss) into a beneficial power generation source. The deformation-driven piston assemblies generate electricity, transforming the energy that would be lost into useful power for vehicle systems.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

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 described hub mechanism enables continuous power generation with reduced surface area and volume, enhancing dynamic performance and reducing energy consumption.

Implementation Method 1

each piston chamber being configured to communicate with an inlet of the power generation device when the hub body is rotated to a first predetermined angular position and to communicate with an outlet of the power generation device when the hub is rotated to a second predetermined angular position

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

an elastic support assembly, and a first elastic limiting block, the connecting plate of each damping assembly connected between the clamp of the corresponding piston assembly and the piston

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS20250128542A1Hub mechanism, wheel assembly, power generation device, and driving system
Publication Date: 2025.04.24 SUN XIZHOU
  • US20250128542A1 patent drawing
  • US20250128542A1 patent drawing
  • US20250128542A1 patent drawing

AI summary

A hub mechanism includes a hub body and multiple piston assemblies. The hub body defines multiple piston chambers and multiple piston hole sets, each piston hole set includes multiple piston holes, and each piston chamber is communicated with the corresponding piston hole set's multiple piston holes. The outer peripheral wall of the hub body is used for connecting to the driving buffer assembly. Each piston assembly includes a piston plate and multiple piston unit columns, with multiple piston unit columns arranged in parallel and connected to the piston plate. The piston plate of each piston assembly is located within the corresponding piston chamber and is slidably connected to the hub body. The multiple piston unit columns correspond one-to-one with the multiple piston holes of the respective piston hole sets, with each piston unit column being slidably connected to the hub body.