A clutch crank assembly for a mid-drive motor
By designing a dedicated clutch chainring assembly for the mid-drive motor, the rotation of the teeth generates an electrical signal to control the speed of the mid-drive motor, solving the problem of inaccurate sensor-chaining connection and improving the riding experience while simplifying the vehicle structure.
CN117818808BActive Publication Date: 2026-05-26ANHUI WEITE MOTOR TECH CO LTD
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Patent Information
- Application Number
- CN202410122320.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2026-05-26
- Estimated Expiration
- 2044-01-29
AI Technical Summary
Technical Problem
Existing torque sensor systems for electric-assist bicycles have high technical barriers, inaccurate sensor-chaining, resulting in a poor riding experience, and complex vehicle structure.
Method used
Design a clutch crank assembly for a mid-drive motor. By setting a rotating component, a rotation module, and a signal transmission module on the crank, the rotation of the teeth generates an electrical signal to control the speed of the mid-drive motor, achieving stepless adjustment. The sensor response is optimized by combining a slider and a limit hole structure.
Benefits of technology
It improves sensor sensitivity and riding experience, simplifies vehicle structure, and enhances vehicle aesthetics.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention relates to a dedicated clutch chainring assembly for a mid-drive motor. This chainring assembly, used to control the speed of the mid-drive motor, includes a bottom bracket, a first crank, and a second crank. A first chainring is mounted on the bottom bracket, and a rotating component is concentrically mounted on the first chainring. A first spring is provided between the rotating component and the first chainring to generate rotational resistance and to reset the rotating component during rotation. The magnitude of the rotational resistance is positively correlated with the rotation angle of the rotating component. This invention modifies the chainring so that the teeth on the chainring can rotate, and achieves stepless control of the mid-drive motor based on pedaling force. It not only accurately and quickly identifies and responds to pedaling force, allowing the mid-drive motor to adjust accordingly and improve the riding experience, but also integrates sensors with the chainring, simplifying the vehicle's structure and size, making the vehicle more aesthetically pleasing.
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