| 摘要 |
In an open state of a valve, when a valve outside sleeve (70) is rotated in the rear portion of a housing (12), a valve inner sleeve (72) is moved forward to close a fluid channel (74), thus stopping supply of compressed driving air. Simultaneously, a front end (66) of the valve outside sleeve (70) is moved forward while it abuts against the rear surface of a retainer (82). Therefore, brake rods (85) biased by compression coil springs (89) are also moved forward, and front surfaces (87) of the brake rods (85) are abutted against a brake disk (92) to effect braking, thereby immediately stopping rotation of a rotor (50). The urging force applied on the brake disk (92) is the compression force of the compression coil springs (89). According to a brake device of this invention, safety of a pneumatic rotational tool is increased and the workability is improved. <IMAGE>
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