| 摘要 |
PURPOSE: An electric jumping bar is provided to enjoy the jumping bar for a long time by operating a solenoid in a vibration cycle of vertical movement of the jumping bar. CONSTITUTION: The electric jumping bar includes a vertical bar(1), a handle(2), a footboard(3), a spring(5) or air cylinder which is a part storing kinetic energy as potential energy, a controller, a sensor, a battery and a solenoid(21). The controller checks a signal from the sensor in real time and operates the solenoid(21) by some or entire parts of a battery power in a vibration cycle of vertical movement of the jumping bar, thereby increasing the amplitude of vibration.
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