Disc brake system

The disk brake device addresses over-adjustment issues by using a cam holder, anchor plate, and ratchet gear to precisely adjust the gap between the disc rotor and brake pad, ensuring accurate braking through controlled axial movement and rotation, preventing over-adjustment.

JP2026073653APending Publication Date: 2026-05-01AKEBONO BRAKE IND CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
AKEBONO BRAKE IND CO LTD
Filing Date
2024-10-18
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Conventional disk brake systems suffer from over-adjustment issues due to excessive rotation of screws during braking, leading to inaccuracies in gap adjustment between the disc rotor and brake pads.

Method used

A disk brake device with a gap adjustment mechanism that includes a cam holder, anchor plate, adjuster nut, ratchet gear, and levers, allowing precise adjustment of the gap between the disc rotor and brake pad by rotating the adjuster nut with the ratchet gear before pressing the brake pad against the rotor surface, and utilizing frictional resistance to prevent over-adjustment.

Benefits of technology

The mechanism enables highly precise adjustment of the gap between the disc rotor and brake pad, preventing over-adjustment and ensuring accurate braking performance by determining the amount of axial movement and rotation based on the gap, thus maintaining consistent braking force.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 2026073653000001_ABST
    Figure 2026073653000001_ABST
Patent Text Reader

Abstract

To provide a brake system that allows for highly precise adjustment of the gap between the rotor and the pad. [Solution] The disc brake device is configured such that the gap adjustment mechanism and the opposing surface of the cam holder 13 to the anchor plate 14 are in contact with the anchor plate when not braking and separated from the anchor plate when braking. The gap adjustment mechanism includes a ring member 34 having a first lever 35, a second lever 36 that holds the first lever to rotate the ring member, and a ratchet that rotates a ratchet gear 33 in only one direction in response to the rotation of the ring member. When braking, the spindle of the gap adjustment mechanism moves axially outward as the adjuster nut rotates together with the ratchet gear before the spindle presses the pad against the rotor surface. In addition, a rotation restricting portion 363 is provided at the end of the second lever on the side of the rotation center 361, which contacts the anchor plate that restricts the rotation of the second lever when not braking.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Clearance regulator and unit brake

    JP2020097954A