In a residential area in Hangzhou, Zhejiang, a loud noise suddenly came from a residential elevator. When residents went out to check, they found that the entire elevator hall was in a mess - large pieces of marble door frames had fallen off, and a middle-aged woman stood beside her with a stunned look on her face, apparently with a head injury. What exactly happened?

An elevator explosion triggered by a cup

The property management received the message and rushed to the scene. After checking the on-site monitoring, they found that the accident may have been caused by a cup. How could it be the cup that caused the trouble?

The surveillance video shows that the middle-aged woman bent down and placed a stainless steel cup at the elevator entrance as she walked out. Within seconds of the elevator door closing, the entire elevator shook.

It is reported that this middle-aged woman is a resident on the 7th floor. At that time, she came to the 9th floor to search for someone. She may have wanted to go back soon, but the time was short, so she used a cup to block it first, thinking that the elevator would not go down. She did not expect such serious consequences.

The property manager stated that due to the falling marble door frame of the elevator, the elderly lady also suffered some injuries, but fortunately, after inspection, she was unharmed. Due to the personal behavior of the elderly lady causing the elevator malfunction, she is responsible for the cost of this repair.

This way, the elevator door will definitely close

When taking elevators, we may find that some elevators cannot be closed by manually blocking the doors, while others cannot. Why is this?

At present, there are two types of protective measures for elevator doors, one is a light curtain and the other is called a touch panel, and many elevators now use light curtains.

A light curtain is like a flashlight. In an elevator, it is not entirely a light curtain from top to bottom, it is distributed at several points. Auntie blocked the door with a cup, but the cup did not touch the light curtain. From the perspective of the light curtain of the elevator, it does not believe that something is blocking it in the middle, so the elevator forces the door to close. After forcibly closing the door, it carried the cup up or down, causing the elevator to malfunction.

The safety touch panel is a near door safety protection device for elevators, which is an electromechanical integrated door closing and anti pinch safety device. The close door protection device that has the same effect as it is a light curtain protection device, which belongs to an inductive protection device.

Both protective measures have protective functions for people or large objects, but for small things or using glass to block the door, the door will definitely be forcibly closed.

There is a blind spot in the elevator door sensor, so don't use your body to block it anymore

So, elevator door sensing has blind spots, and once it enters the blind spot, the elevator door will "turn its face and not recognize people", causing life-threatening situations.