What is the difference between plastic and metal door lock motor worm gear?

Nov 28, 2023

What is the difference between plastic and metal door lock motor worm gear?

1、The role of door lock motor worm gear

Its function is to have a relatively large transmission ratio, which can reduce noise and reduce friction. Most of the locking and unlocking mechanisms of the door lock are the internal gears of the door lock machine with the 90-degree cross matching rotation of the worm gear, and the motor realizes the linear movement or rotation of the moving components by meshing the internal gears and worm gears of the locking machine to achieve the purpose of electric locking and unlocking. However, the gear and the rack meshed with it in the transmission process, because it is sliding friction transmission, more heat will be generated during operation, so that the mating surface forms a gap, the lubricating oil fluid becomes thinner due to the increase in temperature, easy to cause leakage, it may also be that the worm gear is worn too seriously for a long time, resulting in the worm gear is no longer completely meshed with the rack, and eventually leads to the loss of door lock function, endangering the safety of passengers.