Electronic brake actuator, especially electronic parking brake actuator

By manufacturing the internal gear ring with powder metallurgy or metal-like materials and using overmolding for precise assembly, the electronic brake actuator addresses torque transmission limitations, improving strength and precision for broader torque adaptation and meshing efficiency.

WO2026125382A1 Publication Date: 2026-06-18CONTINENTAL AUTOMOTIVE TECHNOLOGIES GMBH +1
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
CONTINENTAL AUTOMOTIVE TECHNOLOGIES GMBH
Filing Date
2025-12-09
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Existing electronic brake actuators face limitations in torque transmission due to the low strength and manufacturing accuracy of the internal gear ring, which is integrally injection molded with the gearbox housing, restricting its ability to handle high torque requirements.

⚗Method used

The internal gear ring is designed as an independent component and manufactured using powder metallurgy or metal-like materials, with mounting portions and mating portions for precise assembly, and fixed in the gearbox housing through overmolding, enhancing strength and precision.

🎯Benefits of technology

This design improves the internal gear ring's strength and manufacturing precision, allowing it to adapt to a wider range of torque requirements and enhances meshing efficiency and NVH performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

Electronic brake actuator (100) including a gearbox housing (10), a gearbox cover (20), a motor (30), a first-stage transmission gear assembly (40), a second-stage transmission gear assembly (50), a planetary gear transmission assembly (60), and an internal gear ring (13). The internal gear ring is injection-molded and fixed in a gear chamber (12) of the gearbox housing by injection molding. At least an internal gear portion of the internal gear ring is manufactured from powder metallurgy or metal like material. The electronic brake actuator provided in the invention designs the internal gear ring as an independent component, then fixes the internal gear ring in the gearbox housing by means of overmolding.
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