What are the functions of automobile A-pillar, B-pillar and C-pillar?

What are the functions of automobile A-pillar, B-pillar and C-pillar?

The design of automobile A-pillar, B-pillar, C-pillar and D-pillar is an important link in automobile design. The angular proportion of these pillars will affect the overall posture of the car, making the car appear more stable or moving. As we all know, the current bus body is a kind of safe body with energy absorption function.

It is characterized by soft head and hard middle, and the cab must be very strong, so as to ensure the living space of the occupants in the car. In practical applications, such as Toyota's GOA body, Mazda's Chuangchi Sky body and Volkswagen's T-ROC body, they are all designed according to this idea.

In practical applications, such as Toyota's GOA body, Mazda's Chuangchi Sky body and Volkswagen's T-ROC body, they are all designed according to this idea. The * * * function of A-pillar, B-pillar and C-pillar is a part of the above-mentioned framework, and another * * * function is to support the roof, so that the occupants in the car have comfortable seating space.

Similarly, the roof is also a part of the frame, which also has a certain impact on the rigidity of the car body. Therefore, the frame stiffness of the convertible version of the same car is lower than that of the hardtop version. Because of the lack of the roof, only the chassis of the car bears the sound torque of the car, so the strength will be relatively reduced.

So what is the function of ABC column? The first is the A-pillar. The A-pillar is used to fix the windshield and the roof together. In addition, the rigidity of the A-pillar also determines the degree to which the vehicle is occupied in a frontal collision, which is why there is an additional A-pillar. Its function is to absorb the energy of frontal collision and increase the supporting space of the body.

B-pillar: the pillar between the front and rear doors is the rear pillar on the driver's side, and the seat belt is a fixed pillar, which is also divided into the left and right sides. In fact, it is the pillar between the front door and the back door. C-pillar: the pillar on both sides of the rear window of a car or hatchback, which connects the rear seat of the car with the roof and body on both sides, and is also located on the left and right sides of the rear of the car.

Small hatchback and sedan car, the whole body is composed of A-pillar, B-pillar and C-pillar connection structure, the window and seat belt play the role of supporting the roof, and the B-pillar of the car plays the role of connecting the side impact force. If the quality of the B-pillar is not good, once it is strongly impacted, the whole vehicle can be said to be almost in a collision state.

In addition, if the B-pillar is seriously deformed, it will directly pierce the occupants, threatening life safety. Therefore, the quality and safety of B-pillar is a great safety hazard. There have been such "embarrassing things" like Honda Civic. The principle of C-pillar is similar to that of A-pillar, but because the impact force absorbed by the car is generally less than that of the front and side.

Therefore, the requirements for C-pillar are not as strict as those for A-pillar and B-pillar. In addition, MPV and large and medium-sized SUVs also have D-pillars, which also play a buffering role and protect the rear row. Many accidents are caused by this blind spot, especially when turning at the intersection, pay attention to whether there are people crossing the road on both sides.

If pedestrians accidentally enter the blind area of A-pillar, the driver can't see it, and an accident will happen if they continue driving. Therefore, when driving, try to avoid the danger caused by the blind area of A-pillar. We can't change the structure of the car, but we can change the position of the driver when driving.

There are also some large SUVs, MPVs and other models, and there are also D-pillars. Behind C-pillars, their functions are similar to those of C-pillars, mainly supporting the roof. These pillars work together to protect the passenger compartment from deformation and minimize the casualties of passengers in the car when accidents such as car rollover and heavy objects hitting the roof occur.