Electric power tool
First Claim
1. An electric power tool comprising:
- a motor as a driving power source;
a reduction mechanism for transferring the rotating power of the motor, the reduction mechanism having two or more gear stages;
a driving unit for transferring the rotating power of the reduction mechanism to a tip end tool;
a bearing unit for rotatably supporting the driving unit;
a housing for accommodating the motor, the reduction mechanism, the driving unit and the bearing unit within a main body portion thereof, the housing provided with a handle portion;
a speed changing unit for changing a reduction ratio of the reduction mechanism, the speed changing unit being arranged in such a position as to allow an operator to operate the same from the outside of the housing;
a power switch for turning on and off a power source of the motor; and
an operation detecting unit for detecting a reduction ratio changing operation performed by the speed changing unit to control the electric power supplied to the motor.
1 Assignment
0 Petitions
Accused Products
Abstract
An electric power tool includes a motor, a reduction mechanism, a driving unit, a bearing unit, a housing, a speed changing unit, a power switch, and an operation detecting unit which detects a reduction ratio changing operation performed by the speed changing unit to control electric power supplied to the motor. The reduction mechanism transfers the rotating power of the motor, and the driving unit transfers the rotating power of the reduction mechanism to a tip end tool. The bearing unit rotatably supports the driving unit, and the housing accommodates the motor, the reduction mechanism, the driving unit and the bearing unit. The speed changing unit changes a reduction ratio of the reduction mechanism, a power switch for turning on and off a power source of the motor.
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Citations
10 Claims
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1. An electric power tool comprising:
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a motor as a driving power source; a reduction mechanism for transferring the rotating power of the motor, the reduction mechanism having two or more gear stages; a driving unit for transferring the rotating power of the reduction mechanism to a tip end tool; a bearing unit for rotatably supporting the driving unit; a housing for accommodating the motor, the reduction mechanism, the driving unit and the bearing unit within a main body portion thereof, the housing provided with a handle portion; a speed changing unit for changing a reduction ratio of the reduction mechanism, the speed changing unit being arranged in such a position as to allow an operator to operate the same from the outside of the housing; a power switch for turning on and off a power source of the motor; and an operation detecting unit for detecting a reduction ratio changing operation performed by the speed changing unit to control the electric power supplied to the motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification