Patent attributes
A shock absorber includes a bottomed cylindrical housing (131), a disk (134) provided movably relative to the housing and forming a housing inner chamber (171) between a bottom portion of the housing and the disk, and a facing member (139) provided on an opposite side of the disk from the bottom portion so as to face the disk. Inner periphery sides of the housing and the facing member are fastened with a piston rod (21)inserted therethrough. A protruding portion is formed on the bottom portion of the housing or the facing member. The protruding portion protrudes toward the disk and is configured to restrict movement of the disk. A seal portion (158) is provided on one side of the disk where the protruding portion is provided. The seal portion is configured to seal between an outer periphery of the disk and an inner periphery of the housing.
