Gear structure

JP7755818B2Active Publication Date: 2025-10-17NISSAN MOTOR CO LTD
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Patent Information

Application Number
JP2024548928
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-09-28
Publication Date
2025-10-17
Estimated Expiration
2042-09-28

AI Technical Summary

Technical Problem

Conventional gear structures molded as a single unit using three-dimensional additive manufacturing face challenges in allocating appropriate materials to gear teeth, leading to poor productivity due to long manufacturing times.

Method used

The gear structure is divided into a shaft portion, web portion, and tooth portion, with the web portion having a cavity and the tooth portion constrained by a chock and chock cover, allowing for material selection based on strength requirements and enabling faster manufacturing.

Benefits of technology

This configuration ensures necessary strength in the tooth portion, reduces weight, and improves productivity by shortening manufacturing time.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

Provided is a gear structure comprising a shaft portion 1, a web portion 2 which is fixed to an outer periphery of the shaft portion 1, and a toothing portion 3 which is fixed to an outer periphery of the web portion 2, wherein the web portion 2 includes a hollow portion 4 which is formed along the circumferential direction, a projection portion 5 which is formed on an outer peripheral surface, a groove portion 6, a wheel retainer 7, and a wheel retainer cover 8, and the toothing portion 3 is restrained in the width direction on the outer peripheral surface of the web portion 2 by the projection portion 5 and the wheel retainer 7 fitted to the groove portion 6. This gear structure has a split structure and can secure the strength required for teeth 3A and achieve a decrease in manufacturing time and an increase in productivity.
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Citation Information

Patent Citations

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    JP2017116064A

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    JP3155760U