Electric working machine
AssigneeHitachi Koki Co., Ltd.
InventorsYasushi Nakano, Yuki Horie, Hirohisa Tomita, Kazuhiko Funabashi
Life of this patent
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Abstract
An electric working machine including: a motor; a driving unit configured to be driven by the motor; a trigger switch configured to allow rotation of the motor; a power supply unit configured to supply electric power to the motor; and a control unit configured to control rotation of the motor, characterized in that: the electric working machine further comprises a switching element configured to perform short-circuiting between terminals of the motor to apply electronic braking, wherein the control unit is configured to perform adjustment of the braking by controlling the switching element when stopping the motor.
Claims17
An electric working machine comprising:
- a motor;
- a driving unit configured to be driven by the motor;
- a trigger switch configured to allow rotation of the motor;
- a power supply unit configured to supply electric power to the motor;
- and
- a control unit configured to control rotation of the motor,
- characterized in that:
- the electric working machine further comprises a switching element configured to perform short-circuiting between terminals of the motor to apply electronic braking,
- wherein the control unit is configured to perform adjustment of the braking by controlling the switching element when stopping the motor.
An electric working machine comprising:
- a motor;
- a fixed part provided with a handle having a grip portion;
- and
- a movable part held by the fixed part, configured to be extendible by sliding relative to the fixed part, and including a cutting blade disposed on a distal end of a movable pipe connected to the fixed part and is configured to be driven by the motor,
- characterized in that:
- the electric working machine further comprises a detection unit configured to detect whether or not the movable part is positioned at a predetermined extended position relative to the fixed part;
- and
- wherein, if the detection unit detects that the movable part has moved from the extended position to a non-extended position during rotation of the motor, a braking force is applied to the motor.
Dependencies are inferred from the claim text.