FIELD: machine building.
SUBSTANCE: invention relates to a braking device of a portable power tool. Braking device comprises at least one magnetic brake unit (14a; 14b; 14c) and at least one driven unit (42a; 42b; 42c) having at least one driven element (44a, 46a; 44b, 46b; 44c, 46c), which is arranged at least one brake element (18a, 24a; 18b, 24b; 18c, 24c) of magnetic brake unit (14a; 14b; 14c). Magnetic brake unit (14a; 14b; 14c) comprises at least two brake elements (18a, 24a; 18b, 24b; 18c, 24c) made in form of permanent magnets (20a, 22a; 20b, 22b; 20c, 22c) and movably mounted relative to each other.
EFFECT: technical result is to reduce stopping time of working tool and increasing reliability of operation of braking device.
9 cl, 9 dwg
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