Voice Coil Motor, also known as voice coil motor, has the full English name of Voice coil Motor and is usually abbreviated as VCM. It is a special type of direct drive linear motor. Its name comes from the fact that its working principle is exactly the same as that of the Voice Coil in a speaker (commonly known as a "horn").

In simple terms, a voice coil motor is a device that directly converts electrical energy into linear reciprocating mechanical motion, and its motion stroke is usually short. Its basic structure: It mainly consists of two parts: permanent magnet: It provides a fixed and uniform strong magnetic field. Coil: Known as the "voice coil", it is a freely movable part.

Working process: When current passes through a coil in a magnetic field, the current-carrying wire will be subjected to the force of the magnetic field. This force is the Lorentz force. The direction of the force follows Fleming's left-hand rule: Stretch out your left hand, let the magnetic field lines pass through the palm, point your four fingers towards the current direction, and the direction pointed by your thumb is the direction in which the coil is subjected to the force. Therefore, when the direction of the current is changed, the direction of the force acting on the coil will also change. When the magnitude of the current is changed, the force acting on the coil will also change proportionally.

Coils are usually connected to a load (such as the lens of a mobile phone camera), thereby driving the load to perform precise linear reciprocating motion.

Our company, Kunshan Tongmao Electronics Co., LTD., is a professional manufacturer specializing in the research and development of voice coil motors with decades of experience. We welcome everyone to come and purchase.