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EP-4737149-A1 - ROOF SIDE RAIL STRUCTURE, VEHICLE BODY STRUCTURE, AND VEHICLE

EP4737149A1EP 4737149 A1EP4737149 A1EP 4737149A1EP-4737149-A1

Abstract

A roof side rail structure (100), a vehicle body structure, and a vehicle. The roof side rail structure (100) comprises a roof side rail inner plate (10), a roof side rail reinforcing plate (20), a guide rail mounting plate (30), a side wall outer plate (60) and a guide rail (40) arranged on the guide rail mounting plate (30). The roof side rail inner plate (10), the roof side rail reinforcing plate (20) and the guide rail mounting plate (30) are connected end to end to form a first cavity (50). The side wall outer plate (60) is bent in a direction away from the first cavity (50) and is connected to the roof side rail reinforcing plate (20) to form a second cavity (70). The guide rail (40) is located on the side of the guide rail mounting plate (30) facing away from the first cavity (50) in a first direction (X). In the first direction (X), the projection of the first cavity (50) at least partially overlaps the projection of the second cavity (70), the projection of the guide rail (40) being located in the overlapping part of the projection of the first cavity (50) and the projection of the second cavity (70). The present application can effectively improve the structural strength of roof side rails and further improve the reliability of vehicles.

Inventors

  • JIANG, Fuxin

Assignees

  • Beijing Chehejia Automobile Technology Co., Ltd.

Dates

Publication Date
20260506
Application Date
20240627

Claims (10)

  1. A roof side rail structure, comprising: a roof side rail inner plate, a roof side rail reinforcement plate, a guide rail mounting plate, a side outer plate, and a guide rail arranged to the guide rail mounting plate; wherein the roof side rail inner plate, the roof side rail reinforcement plate, and the guide rail mounting plate are connected end to end to form a first cavity; the side outer plate is bent in a direction facing away from the first cavity and is connected to the roof side rail reinforcement plate to form a second cavity; and the guide rail is located at a side of the guide rail mounting plate facing away from the first cavity along a first direction, wherein a projection of the first cavity along the first direction at least partially overlaps a projection of the second cavity along the first direction, and a projection of the guide rail along the first direction is located in an overlapping part of the projection of the first cavity along the first direction and the projection of the second cavity along the first direction.
  2. The roof side rail structure according to claim 1, further comprising a mounting region configured for mounting the guide rail, wherein the mounting region is located at a side of the guide rail mounting plate facing away from the first cavity; and a cross-sectional area of the first cavity along the first direction is greater than a cross-sectional area of the mounting region along the first direction.
  3. The roof side rail structure according to claim 1 or 2, wherein the roof side rail inner plate, the roof side rail reinforcement plate, the guide rail mounting plate, and the side outer plate are integrally formed.
  4. The roof side rail structure according to any one of claims 1 to 3, wherein a first connection portion between the side outer plate and the roof side rail reinforcement plate extends along the first direction, and a projection of the first connection portion along a second direction covers at least part of a projection of the guide rail along the second direction.
  5. The roof side rail structure according to claim 4, wherein the projection of the guide rail along the second direction is located in the projection of the first connection portion along the second direction.
  6. The roof side rail structure according to any one of claims 1 to 5, wherein the guide rail mounting plate comprises a first mounting plate and a second mounting plate; and the roof side rail reinforcement plate, the first mounting plate, the second mounting plate, and the roof side rail inner plate are connected end to end to form the first cavity.
  7. The roof side rail structure according to any one of claims 1 to 6, wherein a support plate is arranged inside the first cavity; and wherein the support plate is connected between inner walls of the first cavity along the first direction; and/or the support plate is connected between inner walls of the first cavity along a second direction.
  8. The roof side rail structure according to any one of claims 1 to 7, wherein a dimension of the first cavity along the first direction is denoted as h1, wherein h1 ≥ 45 mm, a dimension of the first cavity along a second direction is denoted as h2, wherein h2 ≥ 10 mm, and the second direction is perpendicular to the first direction.
  9. A vehicle body structure, comprising the roof side rail structure according to any one of claims 1 to 8.
  10. A vehicle, comprising the vehicle body structure according to claim 9.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present invention is based on and claims priority to Chinese Patent Application No. 202310776868.X, filed on June 28, 2023, the entire content of which is incorporated into the present invention by reference. FIELD The present invention relates to the field of automotive technologies, and more particularly to a roof side rail structure, a vehicle body structure, and a vehicle. BACKGROUND With the rapid development of the economy and the automotive industry, a demand for vehicle aesthetics and comfort is increasing. For this reason, a B-pillarless vehicle model has been gaining growing popularity. For a vehicle, a B-pillar is a critical component that enhances safety of the vehicle, as the B-pillar may effectively prevent deformation of a passenger compartment during rollovers or overturns of the vehicle, thereby protecting occupants inside the vehicle. Due to the elimination of the B-pillar structure, a roof side rail of the vehicle needs to withstand greater loads. Currently, most B-pillarless vehicle models are equipped with a sliding door. The layout requirements for a guide rail on the sliding door may result in an insufficient cavity space in the roof side rail structure to provide supporting force, thus leading to a lower structural strength of the roof side rail structure, and consequently the overall reliability of the vehicle is lower. In light of this, there is an urgent need to improve the design of the roof side rail structure. SUMMARY In view of the aforementioned issues, the present invention provides a roof side rail structure, a vehicle body structure, and a vehicle, which may effectively enhance the structural strength of the roof side rail and improve the reliability of the vehicle. In a first aspect, embodiments of the present invention provide a roof side rail structure. The roof side rail structure includes a roof side rail inner plate, a roof side rail reinforcement plate, a guide rail mounting plate, a side outer plate, and a guide rail arranged at the guide rail mounting plate. The roof side rail inner plate, the roof side rail reinforcement plate, and the guide rail mounting plate are connected end to end to form a first cavity; the side outer plate is bent in a direction facing away from the first cavity and is connected to the roof side rail reinforcement plate to form a second cavity; and the guide rail is located on a side of the guide rail mounting plate facing away from the first cavity along a first direction. A projection of the first cavity along the first direction at least partially overlaps a projection of the second cavity along the first direction, and a projection of the guide rail along the first direction is located in an overlapping part of the projection of the first cavity along the first direction and the projection of the second cavity along the first direction. In some embodiments of the first aspect, the roof side rail structure further includes a mounting region configured for mounting the guide rail, the mounting region is located at a side of the guide rail mounting plate facing away from the first cavity; and a cross-sectional area of the first cavity along the first direction is greater than a cross-sectional area of the mounting region along the first direction. In some embodiments of the first aspect, the roof side rail inner plate, the roof side rail reinforcement plate, the guide rail mounting plate, and the side outer plate are an integrally formed structure. In some embodiments of the first aspect, a first connection portion between the side outer plate and the roof side rail reinforcement plate extends along the first direction, and an orthographic projection of the first connection portion along a second direction covers at least part of an orthographic projection of the guide rail along the second direction. In some embodiments of the first aspect, the projection of the guide rail along the second direction is located in the projection of the first connection portion along the second direction. In some embodiments of the first aspect, the guide rail mounting plate includes a first mounting plate and a second mounting plate; and the roof side rail reinforcement plate, the first mounting plate, the second mounting plate, and the roof side rail inner plate are connected end to end to form the first cavity. In some embodiments of the first aspect, a support plate is arranged inside the first cavity; and the support plate is connected between inner walls of the first cavity along the first direction,and/or, the support plate is connected between inner walls of the first cavity along a second direction. In some embodiments of the first aspect, a dimension of the first cavity along the first direction is denoted as h1 and satisfies: h1 ≥ 45 mm, a dimension of the first cavity along a second direction is denoted as h2 and satisfies: h2 ≥ 10 mm, and the second direction is perpendicular to the first direction. I