A power gear matrix device based on FG transmission

By using a power gear matrix device based on FG transmission, the problems of low transmission efficiency, rapid wear, and high noise in traditional vehicle braking systems have been solved, achieving improved braking performance with high-efficiency transmission, long service life, and low noise.

CN224453479UActive Publication Date: 2026-07-03MINNAN INST OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
MINNAN INST OF SCI & TECH
Filing Date
2025-08-01
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Traditional vehicle braking systems often use planetary gear transmissions for their reduction mechanisms. These transmissions suffer from problems such as large backlash, weak impact resistance, and short service life, resulting in low transmission efficiency and insufficient braking force output. Furthermore, traditional gears use symmetrical tooth profiles and line contact meshing, which can lead to rapid wear and high noise due to concentrated contact stress, making them unable to meet the high performance requirements of braking systems.

Method used

The power gear matrix device based on FG transmission includes a first external gear, a second external gear, a planetary roller screw, and a planetary conversion mechanism. Through an asymmetric tooth profile and surface contact meshing design, combined with the connection of rolling elements and flanges, it achieves efficient transmission and high torque output.

Benefits of technology

The transmission efficiency is improved to 0.92 to 0.95, the torque capacity is increased from 543 N·m to 750 N·m, the braking force is increased by 34%, the braking distance at 100 km/h is shortened to 29 m, the noise is reduced to below 75 dB, the service life is extended by 25%, and the transmission resistance is reduced, resulting in a 40% reduction in braking energy loss.

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Abstract

This utility model relates to the field of electric vehicle braking technology and discloses a power gear matrix device based on FG transmission. It includes a first external gear, inside which a second external gear is disposed. A planetary roller screw is disposed on one side of the first external gear, and a planetary conversion mechanism is disposed on one side of the planetary roller screw. The planetary conversion mechanism includes a cross transmission component, a rolling element on one side of the cross transmission component, a connecting rod fixedly connected to the side of the rolling element, and a connecting element fixedly connected to one side of the rolling element. This power gear matrix device based on FG transmission improves transmission efficiency to 0.92 to 0.95, increases torque capacity from 543 N·m to 750 N·m, far exceeding the performance of a hydraulic torque converter; increases braking force by 34% (2900 N - 4890 N), shortens the 100 km / h braking distance to 29 m, and accelerates response speed; the surface contact meshing design reduces wear by 25%, reduces noise to below 75 dB, and reduces transmission resistance, thus reducing braking energy loss by 40%, indirectly improving braking efficiency.
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