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Patent Searching and Data


Title:
BRAKE DISC
Document Type and Number:
Japanese Patent JP2020159542
Kind Code:
A
Abstract:
To reduce stress occurring in a fastening bolt of a brake disc due to frictional heat during braking.SOLUTION: A brake disc is provided with: a doughnut-shaped disc-like plate part 1a having a sliding surface on a front surface side; and a plurality of bolt fastening fin parts 2 that are projected on the back surface of the plate part 1a so as to extend radially at intervals from each other, and are fastened to wheels 20 by inserting a fastening bolt 21 into a bolt insertion hole 2a provided in the middle in a longitudinal direction. Between the bolt fastening fin part 2 and a contact surface of the wheel 20 on the radial inside or radial outside of the bolt insertion hole 2a, a stress avoidance gap 5 is formed.SELECTED DRAWING: Figure 3

Inventors:
NAKANO KATSUHIRO
TANIDA YUKIO
HARADA HISANORI
Application Number:
JP2019063069A
Publication Date:
October 01, 2020
Filing Date:
March 28, 2019
Export Citation:
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Assignee:
KURIMOTO LTD
International Classes:
F16D65/12; B61H5/00
Domestic Patent References:
JP2006009862A2006-01-12
JP2001311441A2001-11-09
Attorney, Agent or Firm:
Maeda patent office