Center pillar assembly of sedan

Abstract

The invention relates to a center pillar assembly of a sedan, which comprises a lateral outer skin, a center pillar inner skin, a center pillar reinforcer, a center pillar hinge installing reinforcerand a center pillar lower reinforcer, wherein the cross sections of the lateral outer skin and the center pillar reinforcer have U-shaped structure in the same direction; the lateral outer skin is coated outside the center pillar reinforcer; the lateral outer skin and the center pillar reinforcer are in butt welding with the center pillar inner skin; a center pillar cavity is formed between the center pillar reinforcer and the center pillar inner skin to provide larger deforming space, thus being capable of better absorbing energy during the lateral collision process, reducing invasion amountof the center pillar and reducing damage of passengers; the inner lateral surface of the center pillar reinforcer is also welded with the hinge installing reinforcer; the center lower reinforcer is welded at the lower part of the center pillar and the inner lateral surface of the hinge installing reinforcer to reinforce the integral structure of the center pillar, so that the energy during the lateral collision process is easy to be transmitted onto a doorsill beam and a roof crossrail by the center pillar, thus forming a complete energy transmission passage and guaranteeing the safety of thepassengers.

Description

technical field [0001] The invention belongs to the technical field of automobile body structures, and in particular relates to a car center pillar structure. Background technique [0002] The design of the cross-section of the center pillar of a car directly determines the safety of the side collision of the vehicle. At present, the cross-sections of the pillars of various models are different, and the cost, cross-section size, weight and safety are very different. see figure 1 , In the past, most models used U-shaped center pillar reinforcement 3 and straight center pillar inner skin 2 butt joint welding to form a cavity to meet the requirements for energy absorption during side collisions. The outer skin 1 of the center pillar is also U-shaped, and is welded outside the center pillar reinforcement 3 . However, the cavity formed by this structure is limited, which cannot effectively absorb the energy in the collision. The strength of the center pillar is low, and it is ...

AI Technical Summary

Problems solved by technology

However, the cavity formed by this structure is limited, which cannot effectively absorb the energy in the collision. The strength of the center pillar is low, and it is easy to break and deform in the middle, and invade the interior of the car body, causing occupant injury.

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