What are the knowledge points involved in the car door lock system?

Do you have a certain understanding of car door lock design? Today, I will talk to you about how car door locks are designed? What functions does it have?

The car door lock system is a device installed on the car door and its column, which can lock the car door reliably, and realize the opening and locking functions through its internal mechanism. It is a very important body accessory. It has the function of safety protection, that is, to ensure the reliable locking of the door in normal use, to prevent accidental/unintentional opening of the door, and to ensure the smooth opening of the door when needed, to ensure normal or emergency passage, so as to avoid life or property casualties loss.It belongs to safety regulations, also known as terminal closure function.

Classification of car door locks

Car door locks can be broadly divided into: mechanical locks, ordinary electric locks and super locks.

Mechanical lock: The locking/cut-off and opening actions are all done by manual operation. According to the structure: there are tongue-type door locks, hook-type door locks, and card-type door locks.

Reed door lock: It uses the engagement and disengagement of the lock tongue and the block to achieve locking and opening. The lock tongue does a linear reciprocating motion, and the door lock has a locking mechanism to prevent the door lock from opening unintentionally. The disadvantage is that it cannot bear longitudinal loads and is less safe. At the same time, closing the door is laborious and noisy, and the lock tongue and block are easy to wear.

Hook-and-spring door lock: It uses the engagement and disengagement of the lock hook and the block to achieve locking or opening, and the lock hook performs a pendulum motion. The disadvantage is that the ability to withstand longitudinal loads is extremely low.

Card-type door lock: It uses the principle of ratchet and pawl to achieve locking or opening through the engagement and disengagement of the rotating card and the block. It has two positions of full locking and half locking, which is safe and reliable. Most of the parts are steel stamping parts, which have good workmanship.