Features:

1. Large transmission ratio: can achieve a larger deceleration ratio, usually in a single stage transmission can obtain a larger transmission ratio.

2. Self-locking performance: when the lead Angle of the worm is less than the equivalent friction Angle between the meshing gear teeth, the worm gear mechanism has self-locking and can achieve reverse self-locking, that is, the worm wheel can only be driven by the worm wheel, but not by the worm wheel.

3. Smooth transmission: Because the engagement of worm and worm gear is continuous, the transmission is relatively stable and the noise is small.

4. Compact structure: It can achieve a larger transmission ratio in a smaller space, making the mechanism more compact.