You must know these common sense of door locks

It seems that every once in a while, we will be brushed by the news of "children falling into cars". Careless parents only focus on driving but fail to take care of the children sitting in the back row. When the door suddenly opens, a child rolls down from the car, causing an accident and causing people to sigh.
In fact, as long as we pay attention to the role of child safety locks, such accidents can be completely avoided.
Child safety lock
With regard to child safety locks, first of all, we should clarify a misunderstanding: central control locks ≠ child safety locks. Because the central locking can be released by the unlocking switch in the vehicle, there is no guarantee of safety protection. After locking the child safety lock, no matter how much the child tosses about in the rear row, the door cannot be opened from the car. At this time, the door can only be opened from the outside, and the door handle in the car temporarily loses the function of opening the door, so as to prevent children from accidentally opening the rear door.
So, how to use the child safety lock?
The toggle child safety lock used by Soundmove Gemini can be switched between locked and unlocked positions by moving the paddle before closing the rear door. The child safety lock can be locked by sliding it to the locked position, and can be unlocked by pulling it back in the opposite direction. The operation is simple and convenient, and it can be exchanged for the child's safety in one second.
In addition, for the safety of children's ride, parents need not only to lock the child safety locks of the two rear doors, but also to fasten the safety belt for the children, so as to avoid excessive collision caused by bumps or sudden start and stop. After the safety of the child is guaranteed, the parents can be more attentive when driving!
Door lock problem
Of course, in addition to the child safety lock, the door lock system of the car is also important, because it is related to the safety and escape of drivers and passengers when using the car, so we also need to improve our understanding of the "problem" of door lock! Some friends said that when the car is unlocked or locked, it will make a "squeak" noise. In fact, this is just the vibration of the brush inside the motor, not a fault, so don't panic.
Understanding the principle of door lock noise can help to understand the structure and operation process of door lock:
Under normal conditions, four conditions must be met to generate electric arc:
1. The motor is in locked-rotor state, and the voltage is continuously supplied.
2. It occurs in the commutation area of AC, and the AB distance is greater than the AC distance.
3. The potential difference of AB is large enough.
4. Unilateral contact between brush blade and reversing disc C.
This is a common phenomenon of the DC brush machine in the suppression state, which cannot be completely avoided from the motor structure. Therefore, this "abnormal noise" is a normal phenomenon, and it is also sporadic from the frequency.
When driving, take safety measures in the car, and at the same time, use the door lock system correctly to prevent accidents.