Nidec manufactures a line of linear vibration motors (" CA series ") with the smallest diameter in the world.
There are already several smartphones and smartwatches with vibrating motors on the market. While in the past, its main purpose was to vibrate in a specific way to notify the user of information, in recent years, the motor has been equipped with a function to control vibration, making the user feel as if he was pressing a button. The vibration motors are expected to be installed in portable devices, including a stylus and VR devices such as smart glasses/gloves. The company has developed this group of ultra-small cylindrical vibration motors based on large conventional vibration motors to meet these needs.
The series includes three vibrating motors, CA3, CA7-VH5, and CA7-VH9, all for the built-in stylus. The motor replicates the vibration of the nib while writing, giving the user the sensation of writing on a piece of paper. In addition, it can also provide motor to meet customer needs, motor size and vibration strength design of different types.
The vibration motor was developed based on magnetic circuit design techniques developed in the company's HDD spindle motor design. The motor consumes only 1.3MW to 6mW of power, about one-fiftieth of the power consumed by a vibrating motor in a typical smartphone (based on a comparison with its standard vibrating motor). This high energy efficiency reduces the necessary battery capacity to install in our smartphones and helps us save weight.
