Safety device for bus passenger door

Abstract

The invention discloses a bus passenger door safety device. The bus passenger door safety device comprises a rotating shaft, a crank, a long key, a tension spring, a box body, a long baffle, a drivingbaffle, a motor, a return spring, a bolt and a shell. The bus passenger door safety device is characterized in that the crank is fixed to the rotating shaft by the long key; the box body is connectedwith the rotating shaft in a threaded mode; the long key compresses the long baffle under the action of the tension spring; one end of the long baffle is extruded by the return spring, and the otherend of the long baffle is fixed by the driving baffle; and the driving baffle is controlled by the motor. The bus passenger door safety device is simple in structure and easy to realize, separation between an air cylinder and the rotating shaft can be achieved by achieving separation between the crank and the rotating shaft, and high practical value is achieved.

Description

technical field [0001] The invention belongs to the field of general vehicle doors, in particular to a bus door safety device. Background technique [0002] According to statistics, 85% of the citizens in our country will choose the bus as the primary means of travel. Faced with such a large carrying capacity, emergency protection measures for buses are extremely important and worthy of careful study. [0003] The emergency protection measures commonly used in domestic buses include: safety hammer, automatic blaster, fire extinguisher, atomizing nozzle and door pump shut-off valve. Analyzing these escape methods, considering escape efficiency and avoiding secondary injuries, door escape is the preferred method. Door escape needs to press the door pump cut-off valve to release the air pressure in the cylinder, so as to realize manual opening of the door, but it has two major defects: First, if the bus circuit fails, the door pump cut-off valve cannot work normally and cannot...

AI Technical Summary

Problems solved by technology

Door escape needs to press the door pump cut-off valve to release the air pressure in the cylinder, so as to realize manual opening of the door, but it has two major defects: First, if the bus circuit fails, the door pump cut-off valve cannot work normally and cannot be unloaded. If the air pressure in the cylinder is dropped, the door cannot be opened; secondly, if the air is not released in time, it will take a long time, once the crowd squeezes out and blocks the passenger door, the passenger door cannot be opened

The problem with this structure is that the passenger needs to manually open the door. In an emergency, the passenger may not be able to respond in time, and the clutch is directly disengaged by the passenger's direct force, which requires a lot of force, which is not suitable for children and elderly people.

The problem with this structure is that the patent does not solve the problem that the straight arm cannot be fully opened outwards due to the fixed connection between the straight arm and the rotating shaft.

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