Automobile threshold

Abstract

The present invention discloses a doorsill for a car, comprising a reinforcing plate of an lower doorsill, a reinforcing internal plate of the lower doorsill, a lower internal plate of a front column, a front bracket of the reinforcing internal plate of the lower doorsill, a middle bracket of the reinforcing internal plate of the lower doorsill and a back bracket of the reinforcing internal plateof the lower doorsill. The reinforcing internal plate of the lower doorsill is welded inside of the reinforcing plate of the lower doorsill via the front, middle and back brackets of the reinforcing internal plate of the lower doorsill. The lower internal plate of the front column is welded before the reinforcing plate of the lower doorsill. The thickness of the reinforcing plate of the lower doorsill, the reinforcing internal plate of the lower doorsill, the lower internal plate of the front column, the front bracket of the reinforcing internal plate of the lower doorsill and the back bracket of the reinforcing internal plate of the lower doorsill is between 1.1 mm and 1.3 mm. The thickness of the middle bracket of the reinforcing internal plate of the lower doorsill is between 1.4 mm and 1.6 mm. Each part is made from the cold rolled steel. The present invention can improve the security when the car has a side collision and reduces effectively the manufacture and use cost of the car.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an automobile threshold. Background technique [0002] As a durable consumer product, cars have gradually entered ordinary households. In recent years, the number of cars in China has grown rapidly, and traffic accidents have also increased steadily. In order to protect the safety of passengers in the event of traffic accidents, my country began to implement the "Occupant Protection in Side Collisions of Vehicles" standard on July 1, 2006, which puts forward requirements for the safety performance of vehicles in side collisions. At the same time, when consumers buy cars, the safety of cars has become one of the most important points for consumers. Therefore, by optimizing the structure design of the car body, improving the safety performance of the side of the car body, adapting to the new collision regulations, and meeting the consumption requirements of consumers are the top priorit...

AI Technical Summary

Problems solved by technology

However, if the rigidity of the door sill of the car is too strong, when the car has a side collision with a large impact force, the body cannot absorb the huge impact energy through deformation, and the passengers will suffer a huge impact, which will also endanger the personal safety of the passengers.

[0005] In these solutions, there are still disadvantages such as difficult part forming, complex production process, high part scrap rate, high production cost, etc.

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