An electronic mechanical brake system based on coupling of service and parking brake by gear belt

By employing a coupled design of gear belts and planetary gear systems in the electromechanical braking system, the problems of system complexity and large size caused by the independent design of service brakes and parking brakes are solved, realizing a braking system with high transmission ratio and high integration, thereby improving braking performance and overall vehicle comfort.

CN224690148UActive Publication Date: 2026-08-28SUZHOU CAR TECHNOLOGY INTELLIGENT CONTROL TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202522298547.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Priority Date
2025-10-11
Filing Date
2025-10-30
Publication Date
2026-08-28
Estimated Expiration
2035-10-30

AI Technical Summary

Technical Problem

In existing electromechanical braking systems, the service brake and parking brake functions are usually designed independently, resulting in a complex system structure, large size, increased weight, complex transmission system, low transmission efficiency, and difficulty in achieving high transmission ratio and high integration coupling within a limited space.

Method used

The design adopts a coupling design based on gear belt and planetary gear system. The coupling of driving and parking brakes is achieved through the combination of planetary gear system and gear belt. The transmission ratio is increased by using planetary gear system, and the parking brake torque is transmitted through worm gear transmission mechanism. The driving brake motor and parking brake motor output torque through planetary carrier output shaft.

Benefits of technology

The system's transmission ratio and peak torque output from the brake motor were increased, while the system's space and weight were reduced, noise was decreased, and the system's reliability and durability were improved. This met the braking requirements under different driving conditions and enhanced the vehicle's handling and comfort.

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Abstract

The utility model belongs to the field of automobile electronic mechanical brake system discloses a kind of electronic mechanical brake system of driving and parking brake coupling based on gear belt, and the system includes: driving brake motor, belt wheel system, planetary gear train, parking brake motor and its transmission assembly, wherein, driving brake motor output end is fixedly equipped input gear, the output gear of belt wheel system is assembled in the sun gear input shaft of planetary gear train, gear belt is engaged between input gear and output gear, to realize deceleration and damping, planetary gear train is nested in the gear recess of output gear, driving brake torque is output via planet carrier output shaft, driving and parking brake share output shaft, compact structure, realize high transmission ratio, high torque output, meet electric vehicle high braking performance demand, gear belt has shock absorption and load sharing function, reduce noise, improve gear train durability life, double motor parallel arrangement and share output shaft design, significantly reduce axial and radial space, with high integration, high reliability and low maintenance cost advantage.
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