Motor for Smart Phone

Motor for Smart Phone

I don't know if you are using a mobile phone every day. Have you ever thought about such a question: How is the vibration mode of the mobile phone operated? Why is the mobile phone getting thinner and the vibration effect is better?

Today, I will take you through the puzzles. What kind of mystery is hidden in this seemingly ordinary function.

......

When it comes to cell phone vibration, it is not a very rare thing. This technology has been widely used more than a decade ago. In the early days, its main role was reflected in reminders to avoid people missing important messages in silent mode. .

The reason why mobile phones vibrate is mainly relying on the vibrator inside the mobile phone. This vibrator motor is very small, usually only a few millimeters to a dozen millimeters.

The traditional mobile phone vibrator consists of a miniature motor (motor) plus a cam (also called eccentric wheel, vibration terminal, etc.). Most of the motor is also covered with a rubber sleeve, which can reduce vibration and assist the fixing. It interferes or damages the internal hardware of the phone.

The principle of mobile phone vibration is very simple, that is, the cam (eccentric device) is used to rotate at high speed inside the mobile phone. During this process, the cam will make a circular motion to generate centrifugal force, and the direction of the centrifugal force will change continuously with the rotation of the cam, and the centrifugal force is fast. The change also caused the entire motor to shake quickly, eventually causing the phone to vibrate.

If you still don't understand, try to think about it. When the fan blades in your home are broken, is the entire fan vibrating?

Another type of mobile phone vibration relies on a linear vibration motor. Unlike an eccentric motor, the linear vibration motor has a greater advantage. The linear motor passes alternating currents in two coils to generate a positive and negative alternating magnetic field. The suction and repulsion produce the "vibration" we feel.

The vibration of this linear motor can simulate the feeling of button press and reduce the probability of damage to the phone keys.

"Why do mobile phones vibrate from side to side instead of up and down? 』

This is because the up and down vibration needs to overcome the problems of mobile phone gravity, etc. The vibration effect is not as obvious as the left and right vibration. In the manufacturing process, the manufacturer must reduce the production time and cost as much as possible. It is not surprising to choose the left and right vibration.

"Mobile phone vibrators are more than just one shape."

As more and more things are placed in the internal space of the mobile phone, the thinner the mobile phone is, the inevitable vibrator is getting smaller and smaller, and some vibrator motor are even made into button sizes, but the vibration principle remains unchanged. .

"Is the vibration effect of the mobile phone harmful to the human body? 』

Obviously, the vibration effect of the mobile phone has no direct harm to the health of the human body; the only downside may be that the power consumption in the vibration mode is faster~

However, for some users, using the vibration mode for a long time may cause auditory hallucinations. Cell phone auditory hallucinations are a manifestation of obsessive-compulsive disorder. Even if there is no call, the ear will often hear your phone ringing. Using the vibration mode will make this situation more obvious. I don't know if you have encountered this situation? If you always hear the vibration of your phone, it is recommended not to continue using the vibration mode.

Today's mobile phone vibration is not limited to reminders, and some vendors are beginning to add it to the feedback interaction. More representative is that after the iPhone 6s, the 3D touch function is added to the iPhone. Apple gives a vibration feedback to the pressing action, like pressing a physical button, which greatly enhances the experience.