23-07-2014 дата публикации
Номер: CN103933700A
Принадлежит:
The invention discloses a self-electricity-generating electronic chest expander which comprises an electro-magnetic induction electricity generating device (1), a digital chip (2), a display screen (3) and an elastic cable (4). The electro-magnetic induction electricity generating device (1) comprises a permanent magnet, a coil and an electricity storing device, the permanent magnet is surrounded by the coil, elastic potential energy is converted into electric energy to charge the electricity storing device, the electricity storing device supplies electricity for the digital chip (2) and the display screen (3), and the electro-magnetic induction electricity generating device (1) is located at one end or two ends of a pulling handle of the electronic chest expander; the digital chip (2) is used for calculating and storing the tensile force, the pulling time number and the consumed energy; the tensile force, the pulling time number and the consumed energy can be displayed through the display ...
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