| 摘要 |
The braking device of the motor chain-saw is provided with a safety device (200) having a mass element (310) which responds to acceleration force, a locking lever (301) being provided which is mounted rotatably on the hand-guard lever (12) and carries the mass element (310) at its free end (301b) which is under the action of a spring (325), and cooperates, with its other end (301a), with a control cam (320) which is supported on the brake lever (20) and via which the braking operation of the circulating saw chain is controlled. <IMAGE>
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