| 摘要 |
PROBLEM TO BE SOLVED: To provide a disc brake capable of securing brake force more than 50% of that at normal time when a disc gets seized and having a simple structure for easy manufacturing and maintenance inspection. SOLUTION: This disc brake is provided with a joint for transmitting circumferential direction force of discs 6 and 8 to a rotary shaft 12 and allowing moving of the disc 8 along a shaft direction and a joint means for transmitting circumferential direction force of the disc 6 to the disc 8 and allowing relative moving between the discs 6 and 8 along the shaft direction. As a result, when the disc 6 gets seized, each one surface (two pairs of sliding contact surfaces in total) of the discs 6 and 8 comes into slidable contact with each other, and when the disc 8 gets seized, both surfaces of the disc 6 and one surface of the disc 8 (three pairs of sliding contact surfaces in total) come into slidable contact one another.
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