Power generating device and tire provided therewith
First Claim
1. A power generating device which has a predetermined rotating shaft in a direction different from the direction of gravity, which is provided in a rotating body rotating about the rotating shaft at a predetermined period, and which generates electric power while rotating about the rotating shaft, characterized by having a generator comprising:
- a flexible beam which is fixed to a substrate;
a weight which is supported by the beam and the position of which is fluctuated in synchronization with the period of the rotation by deflection of the beam caused in accordance with the rotation; and
AC generating means which generates AC power synchronized with the period of the rotation by the fluctuation of the position of the weight.
1 Assignment
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Accused Products
Abstract
An object of the present invention is to provide a power generating device which makes it possible to easily generate electric power in a rotating system, such as a wheel including a tire, without impairing the performance and reliability of the rotating system. In the case where the power generating device is mounted to a rotating body such as a tire, the direction of gravity applied to a weight is changed with the rotation of the rotating body to cause beams to be deflected, so that the positions of the deflected beams and the weight are fluctuated in synchronization with the period of the rotation to cause the position of a coil to be displaced. Thereby, the weight is vibrated in the vertical direction in synchronization with the period of the rotation of the rotating body to change the magnetic flux density crossing the coil. As a result, AC electromotive forces are generated in the coil to enable electric power to be generated.
12 Citations
19 Claims
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1. A power generating device which has a predetermined rotating shaft in a direction different from the direction of gravity, which is provided in a rotating body rotating about the rotating shaft at a predetermined period, and which generates electric power while rotating about the rotating shaft, characterized by having a generator comprising:
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a flexible beam which is fixed to a substrate; a weight which is supported by the beam and the position of which is fluctuated in synchronization with the period of the rotation by deflection of the beam caused in accordance with the rotation; and AC generating means which generates AC power synchronized with the period of the rotation by the fluctuation of the position of the weight. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification