Electric wheel and rolling vehicle equipped with such a wheel

The electric wheel design with a perpendicular motor shaft and worm gear transmission system addresses bulkiness and complexity issues, resulting in a compact, efficient, and low-noise wheel with improved positioning freedom.

FR3163318B1Active Publication Date: 2026-05-22FRANCE REDUCTEURS SA
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Patent Information

Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
FRANCE REDUCTEURS SA
Filing Date
2024-06-18
Publication Date
2026-05-22

AI Technical Summary

Technical Problem

Existing electric wheels with integrated motors are bulky and heavy due to the motor's diameter and thickness, and the transmission systems are complex, noisy, or demanding in terms of positioning.

Method used

An electric wheel design featuring a hollow body with a motor shaft perpendicular to the wheel's axis, utilizing a worm gear transmission system with circular teeth to reduce size and complexity, allowing for a high reduction ratio and low noise operation.

Benefits of technology

The design achieves a compact wheel with improved positioning freedom, simpler assembly, and reduced noise, while maintaining performance through a high reduction ratio and efficient torque transmission.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

Electric wheel (3) comprising a hollow body (4) having a hub (5) defining an axis of rotation (XX') of the wheel, said hollow body (4) delimiting a cavity (6) inside which are housed an electric motor (7) with a rotor (8) capable of rotating about a motor shaft (YY') and a system (9) for transmitting the rotational movement of the rotor (8) to the body (4) to rotate the body (4) about the axis of rotation (XX') of the wheel (3), the motor shaft (YY') which does not intersect the axis of rotation (XX') extending in a plane perpendicular to the axis of rotation (XX') of the wheel (3) and the rotating body (4) comprising circular teeth fixed in rotation to said body (4), and center disposed on the axis of rotation (XX') of the wheel (3). The transmission system (9) comprises a worm gear (11) that can be rotationally locked to the rotor (8) and is adapted to mesh with the teeth (10). Figure for the abbreviated version: Fig. 1
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