Toy wheel piezoelectric power generation device

Abstract

The invention discloses a toy wheel piezoelectric power generation device which comprises a wheel, a plastic cap, a connecting rod, a steel block, a piezoelectric beam, a spring and a rotating shaft.The plastic caps are fixed to the outer sides of the connecting rods, the inner sides of the connecting rods are connected with the steel blocks, the steel blocks are connected with the inner sides ofthe wheels through the springs, and meanwhile the adjacent steel blocks are connected through the piezoelectric beams. Each piezoelectric beam is composed of an outer side piezoelectric plate, a beryllium bronze elastic substrate and an inner side piezoelectric plate. The plastic cap is located on the outer side of the wheel and higher than the outer side of the wheel. And the wheels are fixed onthe rotating shafts. When wheels continuously rotate, continuous vibration of the steel block is formed under the action of force of the plastic caps and the connecting rods, then alternate bending deformation of the piezoelectric beams is caused, electromechanical energy conversion of the device is achieved, and therefore energy can be supplied to electronic components on the toy car, and the defect that the toy car depends on energy supply of a chemical battery is overcome.

Description

technical field [0001] The invention belongs to the field of new energy and electronic technology, in particular to a toy wheel piezoelectric power generation device. Background technique [0002] In recent years, with the rapid development of social economy, the demand for energy is increasing day by day. Environmental pollution and energy shortage have become a common problem plaguing all countries in the world, and the resulting environmental degradation and energy crisis have gradually begun to affect social and economic development. and people's daily life. Under this pressure, scientific and technological workers from all over the world began to explore and develop new energy sources. Piezoelectric generating devices have become a current research hotspot due to their simple structure, no heat generation, no electromagnetic interference, and easy miniaturization. Researchers have proposed various piezoelectric generating devices, such as cantilever beam structures, Cy...

AI Technical Summary

Problems solved by technology

[0003] As a popular children's toy, toy cars are generally equipped with various types of light-emitting and sound devices. At present, the power supply of these light-emitting and sound devices mainly depends on chemical batteries, but the service life of chemical batteries is short and battery waste It is easy to pollute the environment. At the same time, the mechanical energy of the toy car during the movement is not utilized, and it is wasted in vain.

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