| 摘要 |
PROBLEM TO BE SOLVED: To provide a connecting screw driver reducing fatigue of a worker by being operated with small pressing force. SOLUTION: The connecting screw driver is provided with: a driver part, which has a motor, an output shaft 3, a housing 2 storing the motor and the output shaft 3, and a bit 4 mounted to the output shaft 3, a slider case 5 being a tubular member mounted to the housing 2 and having a guide groove 6, a slider 7 provided in the slider case 5 so as to be reciprocated, a spring 8 energizing the slider 7 to the counter housing side, and a drum for feeding screws by being rotated corresponding to the reciprocation movement of the slider 7. The spring 8 is composed of a coil spring in a tapered tubular-shape whose outer diameter is gradually increased from one end 8a abutting on the slider 7 toward the other end 8b abutting the slider case 5. COPYRIGHT: (C)2007,JPO&INPIT
|
