A toy for children's play, which is reduced in a certain proportion according to the basic structure and appearance of the car.

The structure of toy cars includes inertial, mechanical, electric and electric remote control.

Compared with the simulation car model, the toy car has flexible size design, slightly rougher craftsmanship, and simpler materials.

It is generally made of ordinary plastic and iron sheet. Toy designers do not need authorization and technical support from the original car factory

1. Pull back car

The "shaft" connected to the rear tires of the pull-back car is fixedly connected with the gear in the pull-back gear. When the hand does work (drag) on the car backward, the rear wheel rotates backwards, and the force is transmitted to the pull-back gear through the shaft to do work, and the gear drives the return gear. The structure (spring structure or rubber band structure) converts the kinetic energy of the hand into potential energy (for example, the rotation of the rubber band or the compression of the spring, etc.).

When the hand is released, the car loses a force to maintain its balance, that is, the increased friction between the rear tire and the ground when the car is pressed by hand (that is, the grip force in F1), and the return gear is In the opposite direction, the shaft releases potential energy to do work, so the shaft rotates to convert the potential energy into a function.

Since usually the Pelback car is designed to drive forward with the rear wheels (that is, the wheel is counterclockwise when viewed on the left of the car), the Pelback gear is designed as a rear dump energy storage (that is, when the wheel is viewed clockwise on the left of the car), and because of the usual axle Therefore, as long as the return gear can accumulate large (that is, enough revolutions) or the static friction with the ground is small enough, the return gear can move forward through the energy output of the heart of the return gear.

2. Friction car

The simplest understanding is a car that relies on inertia to exercise. The biggest difference between an inertial car and a pull back car is that it can be used both front and rear.

The mechanical principle of the inertial car is mainly focused on a device called a "flywheel". When the rear wheel is pulled back (or pushed forward), it drives the flywheel to rotate rapidly in the reverse direction, pulling it back like a spring, and it stores a lot of rotation. Kinetic energy, as soon as you let go, its energy is released and drives the rear wheel of the trolley to rotate forward (backward), so that the trolley can rush forward (backward) for a long distance. It turns out that the energy is like a rubber band. Pull back to store the energy, and the energy is released when you let go.

3. Remote control toy car

A toy remote control car is a model car that can be remotely controlled by a radio remote control. According to the different body shapes, it can be divided into: ordinary private car, off-road vehicle, container truck, dump truck and so on. For example, off-road vehicles in real life can not only adapt to various road conditions in the wild, but also give people a rough and bold driving superiority. However, as ordinary children and ordinary game players, they can achieve a certain degree of "driving pleasure" by operating ordinary remote control toy cars. Of course, this feeling is far from comparable to driving a real car.

Remote control toy car

The remote control car has many control actions. When selecting, check the sensitivity of the control one by one. Special attention should be paid to the longest antenna of the transmitter at the beginning of the inspection. After all inspections are normal, the antenna will be shortened slowly and observe the shortening of the control distance. Generally, when the antenna is reduced to half of its full length, and the control distance is reduced by one-third, it is normal. For children under 6 years old, just choose a single-channel remote control toy. Its action is relatively simple, and the transmitter has only one button, which can only control the toy to change one action, such as changing from forward to backward. For children over 6 years old, you can choose multi-channel remote control toys, allowing children to master more complex manipulation skills.