CN-122009334-A - Vehicle body C column assembly and vehicle

CN122009334ACN 122009334 ACN122009334 ACN 122009334ACN-122009334-A

Abstract

The application provides a vehicle body C column assembly and a vehicle. The vehicle body C column assembly comprises a left C column inner plate and a right C column inner plate, a rear floor framework is arranged behind the bottom of the vehicle body, a first connecting assembly and a second connecting assembly are arranged along the length direction of the vehicle body, the first connecting assembly is connected between the left C column inner plate, the right C column inner plate and two ends of the rear floor framework along the width direction of the vehicle body to form a first force transmission path, the second connecting assembly is connected between the left C column inner plate, the right C column inner plate and two ends of the rear floor framework along the width direction of the vehicle body to form a second force transmission path, and the vehicle comprises the vehicle body C column assembly. The application avoids the force flow concentration of a single path, ensures that the load distribution is more uniform, reduces the stress concentration, increases the continuity of force flow transmission, increases the torsional rigidity of the vehicle body and effectively inhibits the torsional deformation of the vehicle body.

Inventors

SANG HONGYAN
DU HAIXIAO
LUO LAILONG
WANG DONGJIN

Assignees

安徽智界新能源汽车有限公司
奇瑞汽车股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260330

Claims (10)

1. A body C-pillar assembly, comprising: the C column assembly comprises a left C column inner plate and a right C column inner plate; the rear floor framework is arranged at the rear of the bottom of the vehicle body; The first connecting assembly is connected with the left C column inner plate, the right C column inner plate and the two ends of the rear floor framework along the width direction of the vehicle body to form a first force transmission path, and the second connecting assembly is connected with the left C column inner plate, the right C column inner plate and the two ends of the rear floor framework along the width direction of the vehicle body to form a second force transmission path.
2. The vehicle body C-pillar assembly according to claim 1, wherein the first connection assembly includes a left rear wheel house inner panel first reinforcement plate and a right rear wheel house inner panel first reinforcement plate arranged in a vehicle body width direction; the second connecting component comprises a left rear wheel cover inner plate second reinforcing plate and a right rear wheel cover inner plate second reinforcing plate which are arranged in a row along the width direction of the vehicle body; The first end of the first reinforcing plate of the left rear wheel cover inner plate and the first end of the second reinforcing plate of the left rear wheel cover inner plate are fixedly connected with the left C column inner plate, and the first end of the first reinforcing plate of the right rear wheel cover inner plate and the first end of the second reinforcing plate of the right rear wheel cover inner plate are fixedly connected with the right C column inner plate; The second end of the first reinforcing plate of the left rear wheel cover inner plate and the second end of the second reinforcing plate of the left rear wheel cover inner plate, the second end of the first reinforcing plate of the right rear wheel cover inner plate and the second end of the second reinforcing plate of the right rear wheel cover inner plate are connected with the rear floor framework.
3. The body C-pillar assembly of claim 2, wherein said rear floor framework includes first and second rear floor cross members aligned along a length of the vehicle body; The second end of the first reinforcing plate of the left rear wheel cover inner plate and the second end of the first reinforcing plate of the right rear wheel cover inner plate are respectively connected with two ends of the first rear floor cross beam along the width direction of the vehicle body in a one-to-one correspondence manner; the second ends of the second reinforcing plates of the left rear wheel cover inner plate and the right rear wheel cover inner plate are respectively connected with the two ends of the second rear floor cross beam along the width direction of the vehicle body in a one-to-one correspondence mode.
4. The vehicle body C-pillar assembly according to claim 1, wherein left and right ends of the rear floor frame in the vehicle body width direction are respectively bent to form left and right vertical turn-ups; The left vertical flanging is in fit connection with the second end of the first reinforcing plate of the left rear wheel cover inner plate and the second end of the second reinforcing plate of the left rear wheel cover inner plate; The right vertical flanging is in fit connection with the second end of the first reinforcing plate of the right rear wheel cover inner plate and the second end of the second reinforcing plate of the right rear wheel cover inner plate.
5. The body C-pillar assembly of claim 4, further comprising a left rear wheel cover inner panel and a right rear wheel cover inner panel; the left rear wheel cover inner plate is connected with the left vertical flanging in a fitting mode, and the right rear wheel cover inner plate is connected with the right vertical flanging in a fitting mode.
6. The body C-pillar assembly according to claim 4 or 5, wherein the left vertical flange is connected with the second end of the left rear wheel house inner plate first reinforcing plate and the second end of the left rear wheel house inner plate second reinforcing plate by bolts, and the left rear wheel house inner plate is riveted with the left vertical flange; the right vertical flanging is connected with the second end of the first reinforcing plate of the right rear wheel cover inner plate through bolts, and the right rear wheel cover inner plate is riveted with the right vertical flanging.
7. A body C-pillar assembly according to any one of claims 1-3, wherein said rear floor skeleton is an aluminum integral die cast.
8. A vehicle body C-pillar assembly according to claim 2 or 3, wherein a first end height of the left rear wheel house inner panel first reinforcement panel is greater than a first end height of the left rear wheel house inner panel second reinforcement panel; The first end height of the first reinforcing plate of the right rear wheel cover inner plate is larger than the first end height of the second reinforcing plate of the right rear wheel cover inner plate.
9. The body C-pillar assembly according to claim 2, wherein reinforcing cavities are provided on the left rear wheel house inner panel first reinforcing plate, the left rear wheel house inner panel second reinforcing plate, the right rear wheel house inner panel first reinforcing plate, and the right rear wheel house inner panel second reinforcing plate.
10. A vehicle comprising the body C-pillar assembly of any one of claims 1-9.

Description

Vehicle body C column assembly and vehicle Technical Field The invention belongs to the technical field of vehicle bodies, and relates to a vehicle body C column assembly and a vehicle. Background With the development of the automotive industry, the vehicle body C-pillar structure has evolved from a pure roof support to a comprehensive engineering element integrating safety, light weight, process feasibility and modeling aesthetics. High torsional stiffness has become a central indicator for measuring passive safety and comprehensive quality of modern vehicles, particularly electric vehicles. The high-rigidity car body not only can protect passengers, but also is a key defending line for preventing the battery from extruding and igniting after collision for the electric car. However, the existing C column structure of the vehicle body still has obvious defects that firstly, most vehicle types adopt a single C ring structure, a force transmission path is single, load distribution is uneven, stress concentration is easy to occur under dynamic working conditions to cause welding spots or sheet metal cracking, secondly, structural members adopt a multi-piece splice welding mode to cause discontinuous force flow transmission and reduce rigidity and modal performance of the vehicle body, thirdly, the torsion-resistant section at the rear part of the vehicle is single, and the vehicle body is in deformation risk when bearing asymmetric loads (such as single-side wheel passing). Disclosure of Invention The application provides a vehicle body C column assembly and a vehicle, which are used for solving the problems in the prior art, avoiding the concentration of force flow in a single path, enabling the load distribution to be more uniform, reducing the stress concentration, increasing the continuity of force flow transmission, increasing the torsional rigidity of the vehicle body and effectively inhibiting the torsional deformation of the vehicle body. The application provides a vehicle body C column assembly, which comprises a C column assembly, a rear floor framework, a first connecting assembly and a second connecting assembly, wherein the C column assembly comprises a left C column inner plate and a right C column inner plate, the rear floor framework is arranged at the rear part of the vehicle body, the first connecting assembly and the second connecting assembly are arranged along the length direction of the vehicle body, the first connecting assembly is connected between the left C column inner plate, the right C column inner plate and two ends of the rear floor framework along the width direction of the vehicle body to form a first force transmission path, and the second connecting assembly is connected between the left C column inner plate, the right C column inner plate and two ends of the rear floor framework along the width direction of the vehicle body to form a second force transmission path. The first connecting component comprises a left rear wheel cover inner plate first reinforcing plate and a right rear wheel cover inner plate first reinforcing plate which are arranged along the width direction of the vehicle body, the second connecting component comprises a left rear wheel cover inner plate second reinforcing plate and a right rear wheel cover inner plate second reinforcing plate which are arranged along the width direction of the vehicle body, the first end of the left rear wheel cover inner plate first reinforcing plate and the first end of the left rear wheel cover inner plate second reinforcing plate are fixedly connected with the left C column inner plate, the first end of the right rear wheel cover inner plate first reinforcing plate and the first end of the right rear wheel cover inner plate second reinforcing plate are fixedly connected with the right C column inner plate, and the second end of the left rear wheel cover inner plate first reinforcing plate and the second end of the left rear wheel cover inner plate second reinforcing plate and the second end of the right rear wheel cover inner plate second reinforcing plate are fixedly connected with the rear floor framework. The rear floor framework comprises a first rear floor beam and a second rear floor beam which are arranged in the length direction of the vehicle body, wherein the second end of the first reinforcing plate of the left rear wheel cover inner plate and the second end of the first reinforcing plate of the right rear wheel cover inner plate are respectively connected with the two ends of the first rear floor beam in the width direction of the vehicle body in a one-to-one correspondence manner, and the second end of the second reinforcing plate of the left rear wheel cover inner plate and the second end of the second reinforcing plate of the right rear wheel cover inner plate are respectively connected with the two ends of the second rear floor beam in the width direction of the vehicle body in a one-to-one correspondence