An electric vehicle wheel assembly having a one-way clutch
By integrating a roller-type one-way clutch into the rear wheel sprocket of the electric vehicle, the problems of gliding resistance and noise in electric vehicles are solved, power transmission and separation are realized, and the range and riding comfort of electric vehicles are improved.
CN224497314UActive Publication Date: 2026-07-14CHANGZHOU JIAHUANGNENG ELECTRIC DRIVE TECHNOLOGY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU JIAHUANGNENG ELECTRIC DRIVE TECHNOLOGY CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-14
AI Technical Summary
Technical Problem
Existing electric vehicle rear wheel drive systems suffer from gliding resistance and noise issues during coasting, especially ratchet-pawl type one-way clutches which generate mechanical shock and noise during engagement and disengagement, affecting range and riding comfort.
Method used
A roller-type one-way clutch is integrated into the rear wheel sprocket. Through the design of the raceway groove and rollers, it transmits power in the driving state and disengages in the coasting state, reducing coasting resistance and noise. The roller-type one-way clutch structure achieves smooth engagement.
Benefits of technology
It effectively reduces gliding resistance, increases range, reduces energy consumption, improves riding noise performance, and enhances riding comfort.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224497314U_ABST
Abstract
This utility model discloses an electric vehicle pulley assembly with a one-way clutch, including a rear wheel toothed disc and a one-way clutch. The outer circumference of the rear wheel toothed disc meshes with the electric vehicle drive belt, and the one-way clutch is fixed to the inner side of the rear wheel toothed disc. The one-way clutch includes a first cover plate, an inner ring, an outer ring, and a second cover plate. The inner wall of the inner ring is disposed on the rear wheel of the electric vehicle. The outer ring is sleeved on the outer wall of the inner ring and located between the first cover plate and the second cover plate. The inner wall of the outer ring is provided with multiple raceway grooves spaced apart along the circumferential direction. Each raceway groove has a narrow section, a flat section, and a wide section arranged sequentially along the circumferential direction. A roller that can move within the raceway groove is provided by a spring. This structure can overcome the problem that the existing rear wheel toothed disc is rigidly connected to the wheel hub and still drives the motor to rotate, generating back electromotive force and mechanical resistance during coasting. It can achieve reliable power transmission in the driving state and automatic separation of the outer ring and the inner ring in the coasting state.
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