CN-114590320-B - Vehicle body structure

Abstract

A vehicle body structure includes a front pillar that is joined to a dash panel, a front side member that extends from the dash panel toward a front of a vehicle, a side member that is connected to a bottom end of the front pillar, a rear lower member that connects a rear portion of the front side member and a front portion of the side member, and a connecting member that connects at least two of the front pillar, the side member, and the rear lower member.

Inventors

• HONG DEHE
• ZHENG XIXI
• JIN XIANZHI
• LI BINGTIAN

Assignees

• 现代自动车株式会社
• 起亚株式会社

Dates

Publication Date

20260505

Application Date

20210825

Priority Date

20201203

Claims (17)

1. 1.A vehicle body structure comprising: A front pillar joined to the dash panel; a front side member extending from the dash panel toward a front of the vehicle; A side member connected to a bottom end of the front pillar; a rear lower member connecting a rear portion of the front side member and a front portion of the side member, and A connecting member connecting at least two of the front pillar, the side sill and the rear lower member, Wherein the rear lower member includes a front-side connecting portion connected to a rear portion of the front side member, and includes a rear-side connecting portion connected to a front portion of the side member, The side member has a concave wall provided at a front portion thereof and a cavity defined by the concave wall, and a rear-side connecting portion of the rear lower member is accommodated in the cavity.
2. 2. The vehicle body structure according to claim 1, wherein the connecting member includes a first mounting wall parallel to a mounting surface of the front pillar and a mounting surface of the rear lower member, and includes a second mounting wall parallel to a mounting surface of the side member.
3. 3. The vehicle body structure according to claim 2, wherein the first mounting wall is joined to a mounting surface of the front pillar.
4. 4. The vehicle body structure according to claim 2, wherein the first mounting wall is joined to a mounting surface of the rear lower member.
5. 5. The vehicle body structure according to claim 2, wherein the second mounting wall is joined to a mounting surface of the side member.
6. 6. The vehicle body structure according to claim 2, wherein the rear lower member has a horizontal flange joined to a bottom wall of the side member.
7. 7. The vehicle body structure according to claim 1, wherein a top wall of the rear-side connecting portion is joined to a top wall of the side member.
8. 8. The vehicle body structure according to claim 1, wherein an inner side wall of the rear-side connecting portion is joined to an inner side wall of the side member.
9. 9. The vehicle body structure according to claim 1, wherein an outer side wall of the rear-side connecting portion is joined to a concave wall of the side member.
10. 10. The vehicle body structure according to claim 1, wherein the connecting member is integrally connected to the front pillar such that the connecting member and the front pillar are of a one-piece structure.
11. 11. The vehicle body structure according to claim 10, wherein the connecting member includes an extension wall extending vertically from a bottom end of the front pillar and a mounting wall extending horizontally from a bottom end of the extension wall, The mounting wall is parallel to the mounting surface of the side member, The mounting wall is joined to a mounting surface of the side member.
12. 12. The vehicle body structure according to claim 11, wherein a mounting surface of the front pillar is joined to a mounting surface of the rear under member.
13. 13. The vehicle body structure according to claim 1, wherein the connecting member is integrally connected to the side member such that the connecting member forms a one-piece structure with the side member.
14. 14. The vehicle body structure according to claim 13, wherein the connecting member is a mounting wall extending vertically from a top end of the side member, The connecting member is parallel to the mounting surface of the front pillar and the mounting surface of the rear lower member, The connecting member is coupled to the mounting surface of the front pillar and the mounting surface of the rear lower member.
15. 15. The vehicle body structure according to claim 1, wherein the connecting member is integrally connected to the rear lower member such that the connecting member and the rear lower member form a unitary one-piece structure.
16. 16. The vehicle body structure according to claim 15, wherein the connecting member is a mounting wall extending from the rear lower member toward the side member, The connecting member is parallel to the top surface of the side member, The connecting member is joined to the top surface of the side member.
17. 17. The vehicle body structure of claim 16, wherein the mounting surface of the front pillar is joined to the mounting surface of the rear under member.

Description

Vehicle body structure Cross Reference to Related Applications The present application is based on korean patent application No. 10-2020-0167382 filed on 3 months of 2020 at 12 and claiming priority from this application, the entire contents of which are incorporated herein for all purposes by this reference. Technical Field The present invention relates to a vehicle body structure, and more particularly, to a vehicle body structure that firmly connects a front pillar, a side sill, and a rear lower member, thereby improving crashworthiness and uniformly distributing impact energy. Background As is well known in the art, a vehicle body structure includes a dash panel that separates a front cabin and a passenger cabin, and includes a pair of front side members disposed in front of the dash panel. The pair of front side members may be spaced apart from each other in the lateral direction of the vehicle at the front of the vehicle. A pair of side members may be respectively connected to the pair of front side members. The front portion of each side member may be connected to the rear portion of each front side member by a rear lower member. A pair of front pillars (e.g., a pillars) may be joined to both side edges of the dash panel, respectively. In recent years, in order to achieve weight reduction of a vehicle, a front pillar, a rear lower member, and a side member may be made of an aluminum-based material. During assembly of the vehicle body structure, the front structure including the dash panel, the rear floor, and the center floor may be loaded in the height direction of the vehicle. Then, a pair of front pillars may be loaded on both side edges of the dash panel in the lateral direction of the vehicle. The bottom end portion of each front pillar may be joined to the rear lower member using fasteners, welding, and/or the like. The bottom end portion of the front pillar may be joined to the top end portion of the rear lower member in the lateral direction of the vehicle. When the front portion of the vehicle body including the front pillar is deformed in the event of a vehicle impact/collision, the front door will not open, which may cause a safety problem. In particular, during a frontal collision of the vehicle, the bottom end portion of the front pillar and the top end portion of the rear lower member can be easily separated. The above information described in this background section is provided to aid in understanding the background of the inventive concept and thus may include any technical concept that is not otherwise construed as prior art known to one of ordinary skill in the art. Disclosure of Invention The present invention has been made to solve the above-mentioned problems occurring in the prior art while maintaining the advantages achieved by the prior art. An aspect of the present invention provides a vehicle body structure that firmly connects a front pillar, a side sill, and a rear lower member, thereby improving crashworthiness and uniformly distributing impact energy. According to one aspect of the present invention, a vehicle body structure may include a front pillar joined to a dash panel, a front side member extending from the dash panel toward a front of a vehicle, a side sill connected to a bottom end of the front pillar, a rear lower member connecting a rear portion of the front side member and a front portion of the side sill, and a connecting member connecting at least two of the front pillar, the side sill, and the rear lower member. The connecting member may include a first mounting wall parallel to the mounting surface of the front pillar and the mounting surface of the rear lower member, and may include a second mounting wall parallel to the mounting surface of the side sill. The first mounting wall may be joined to a mounting surface of the front pillar. The first mounting wall may be joined to a mounting surface of the rear lower member. The second mounting wall may be joined to a mounting surface of the side member. The rear lower member may have a horizontal flange joined to the bottom wall of the side member. The rear lower member may include a front-side connection portion connected to a rear portion of the front side member, and may include a rear-side connection portion connected to a front portion of the side member. The top wall of the rear-side connecting portion may be joined to the top wall of the side member. The inner side wall of the rear-side connecting portion may be joined to the inner side wall of the side member. The side member may have a concave wall provided at a front portion of the side member and a cavity defined by the concave wall. The rear-side connection portion of the rear lower member may be accommodated in the cavity. The outer side wall of the rear-side connecting portion may be joined to the concave wall of the side member. The connecting member may be integrally connected to the front pillar such that the connecting member and the front pi