Electric braking system

JP7863465B2Active Publication Date: 2026-05-21ASTEMO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
ASTEMO LTD
Filing Date
2022-07-04
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

The existing electric brake devices face issues with increased length along the axial direction due to the positioning of the thrust detection sensor, which affects mountability on vehicles.

Method used

The electric brake device incorporates a thrust detection sensor positioned at the end of a second member opposite to the friction pad side, using a solid load cell that directly contacts the second member, allowing for a shortened axial length without compromising detection accuracy.

Benefits of technology

This configuration reduces the overall length of the friction pad along the axial direction, enhancing vehicle mountability while maintaining the detection accuracy of the thrust detection sensor.

✦ Generated by Eureka AI based on patent content.

Smart Images

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Patent Text Reader

Abstract

To provide an electric brake device which enables reduction of an entire length of a friction pad along an axial direction without deteriorating detection accuracy of a thrust detection sensor.SOLUTION: A disc brake 1A serving as an electric brake device includes: an electric motor 50; a caliper body 30 provided with the electric motor 50; a nut member 135 which is linearly moved in an axial direction of a disc rotor D by driving of the electric motor 50 and moves an inner brake pad 2; a center bolt 95 which threadedly engages with the nut member 135, is restricted from rotating relative to the caliper body 30, and extends along an axial direction of the disc rotor D; and a thrust detection sensor 215 which is provided at an axial end, which is opposite to the inner brake pad 2 side, of the center bolt 95 and detects a reaction force from the disc rotor D. The structure enables reduction of an entire length of an inner brake pad 2 along the axial direction without deteriorating detection accuracy of the thrust detection sensor 215.SELECTED DRAWING: Figure 5
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