Electric vehicle and hub motor

The hub motor design with a through hole and cylindrical body allows for interchangeable axle shafts, reducing motor types and improving durability and waterproofing, addressing the challenges of load management and water ingress in electric vehicles.

JP2025113049APending Publication Date: 2025-08-01MITSUBA CORP
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Patent Information

Application Number
JP2024007677
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-01-22
Publication Date
2025-08-01

AI Technical Summary

Technical Problem

Existing electric vehicles with hub motors face challenges in managing different durability requirements for front and rear wheels, leading to an increased number of hub motor types and complexity in product management, and require enhanced waterproofing to prevent water ingress.

Method used

A hub motor design with a through hole and a cylindrical body between the axle shaft and through hole, allowing interchangeable axle shafts of different thicknesses, and a diameter-expanded portion for improved waterproofing, reducing motor types and enhancing durability and waterproofing.

Benefits of technology

The design reduces the variety of hub motors needed, improves durability by supporting different loads, and enhances waterproofing by directing water ingress away from the frame, ensuring high reliability and maintainability.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide an electric vehicle making it possible to diminish hub motor types and a hub motor.SOLUTION: An electric vehicle includes a hub motor mounted on a wheel. The electric vehicle includes an axle shaft whose outer diameter is smaller than an inner diameter of a piercing hole that pierces a rotation center of the hub motor and which is inserted into the piercing hole, and a cylindrical body that intervenes between the axle shaft inserted into the piercing hole and the piercing hole.SELECTED DRAWING: Figure 2
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Citation Information

Patent Citations

  • Hub for bicycle with built-in motor

    JP2012030679A

  • Hub structure with built-in motor, and bicycle

    JP2016016717A