| 摘要 |
PURPOSE:To eliminate confusing operation and prevent consumption of a spare battery by constructing so as to switch a main battery to electric load, and moreover so as to connect a spare battery to the load by moving a knob to operation direction. CONSTITUTION:Inner blade which can make reciprocating vibration in right and left direction by a motor main axis 5 is fixed to the upper part of the main case 1. An outer blade 7 which slides along the inner blade is fitted so as to can attach or detach freely through a holder 7. A switch knob 8 for ON/OFF operation of a motor 2 is set in the front of the case 1. Plug 10 for charging of a main battery 3 is installed on the lower side of the case 1 so as to can draw out or push in freely. Three moving contacts 11-13 comprising conductive metal plate are fixed in parallel on the inner side of the knob 8. Three fixed contacts corresponding to each of moving contacts 11-13 which are fixed in the case 1 are connected to the motor 2 arranged in pattern, each of batteries 3 and 4, and a charging circuit. |
