Patent ID: 7755258
Filing Date: 2010-07-13
Classification: H02J,H02K,Y02B

Abstract:
1. A charging device for a portable electronic product with a charging circuit, comprising: a mechanical energy collecting device configured on a main body of a portable electronic product, adapted to collect and store part of mechanical energy of a user of the portable electronic product; a mechanical energy-electrical energy converting device coupled with the mechanical energy collecting device, adapted to convert mechanical energy stored by the mechanical energy collecting device into electrical energy; and a processing circuit connected between an output end of the mechanical energy-electrical energy converting device and an input end of a charging circuit of the portable electronic product, adapted to process energy output by the mechanical energy-electrical energy converting device and input processed energy to the charging circuit of the portable electronic product; wherein the mechanical energy collecting device comprises a spiral spring pendulum adapted to wind a spiral spring via a swing of the spiral spring pendulum which comprises: a pendulum shaft, supported rotationally on the main body of the portable electronic product; a pendulum and a pendulum gear, configured on the pendulum shaft; a spiral spring shaft, supported rotationally on the main body of the portable electronic product; a spiral spring gear, configured on the spiral spring shaft and engaged with the pendulum gear; a spiral spring, winded around the spiral spring shaft and one end being fixed on the spiral spring shaft and the other being fixed on the main body of the portable electronic product; a spiral spring releasing device configured between the spiral spring shaft and the pendulum shaft, adapted to release the spiral spring after the spiral spring is wound, wherein the spiral spring releasing device comprises a pendulum shaft plectrum configured on the pendulum shaft and protruding towards a direction of the spiral spring shaft, and an engagement string and a disengagement string, wound around the spiral spring shaft and one end of each string being connected to the spiral spring shaft and the other end being connected to the pendulum shaft plectrum; wherein a winding direction of the disengagement string on the spiral spring shaft is the same as that of the spiral spring, and a length of the disengagement string is configured to strain the pendulum plectrum when the spiral spring is fully wound so as to disengage the pendulum gear and the spiral spring gear, and a winding direction of the engagement string is opposite to that of the spiral spring, and a length of the engagement string is configured to strain the pendulum plectrum when the spiral spring is fully released so as to pull the pendulum shaft back to a position where the pendulum gear engages with the spiral spring gear; and a direction restricting device configured on the pendulum gear, adapted to restrict a rotation direction of the pendulum gear to a direction in which the spiral spring is wound.