Speed reducer

By setting the gear ratio to avoid repeated application of large forces on specific teeth, the reducer addresses tooth damage issues, reducing material costs without compromising performance.

WO2026126720A1 Publication Date: 2026-06-18AISIN CORP
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
AISIN CORP
Filing Date
2025-11-12
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing reducers face issues with gear tooth damage or breakage due to repeated application of large load torques, necessitating the use of expensive high-strength materials to prevent damage, thereby increasing costs.

⚗Method used

The gear ratio between the front and rear gears is configured such that a specific tooth is not subjected to a large load torque twice in a row, preventing repeated application of large forces and eliminating the need for high-strength materials.

🎯Benefits of technology

This configuration prevents tooth chipping or breakage, reducing the need for expensive materials and controlling costs while maintaining gear functionality.

✦ Generated by Eureka AI based on patent content.

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Abstract

This speed reducer comprises: a rotary drive shaft of an actuator; a front-stage gear to which rotary drive force of the rotary drive shaft is transmitted; a rear-stage gear to which rotary drive force is transmitted from the front-stage gear; and an output shaft to which rotary drive force is transmitted from the rear-stage gear. A gear ratio between the front-stage gear and the rear-stage gear is set such that teeth of the front-stage gear to and on which a relatively large load torque is transmitted and acts when the output shaft rotates and the relatively large load torque is transmitted to and acts on teeth of the rear-stage gear are different from teeth of the front-stage gear to and on which a relatively large load torque is transmitted and acts when the relatively large load torque is transmitted to and acts on the rear-stage gear next time.
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