| 摘要 |
A brake device includes a pad 100a having a friction surface 101 and a disk 200a having a friction surface 201 sliding on the friction surface 101. The friction surface 101 includes hard particles 102 that are elastically supported in a y direction perpendicular to the friction surface 201. The friction surface 201 includes a plurality of convex portions 202 that is disposed in a direction where the friction surface 201 slides on the friction surface 101. When the friction surface 201 slides on the friction surface 101, the hard particles 102 continuously come into contact with the convex portions 202, respectively, while being displaced in the y direction perpendicular to the friction surface 201. Accordingly, the brake device can improve abrasion resistance as compared to a brake device that mainly performs abrasive friction. When the hard particle 102 comes into contact with the next convex portion 202 after coming into contact with one convex portion 202, the hard particle 102 comes into contact with the convex portion 202 at a position lower than the apex of the convex portion 202. Accordingly, the hard particles 102 continuously come into contact with the convex portions 202 so as to follow the convex portions 202, respectively. Therefore, it may be possible to obtain a larger frictional force.
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