Front cabin longitudinal beam structure

Abstract

The utility model discloses a forecabin longitudinal beam structure, and belongs to the technical field of automobile forecabins. The front cabin longitudinal beam comprises two front cabin longitudinal beam main bodies which are symmetrically arranged, wherein each front cabin longitudinal beam main body comprises a front longitudinal beam outer plate, a front wall front cross beam, a front cross beam inclined supporting beam upper plate and a front doorsill connecting cross beam; the front cross beam inclined supporting beam upper plate is arranged on the lower portion of the front section of the forecabin longitudinal beam body, the forecabin longitudinal beam body is connected with a front floor and a front threshold body through the front cross beam inclined supporting beam upper plate and the front threshold connecting cross beam, and the front wall front cross beam is arranged on the upper portion of the front cross beam inclined supporting beam upper plate. The front wall front cross beam is connected with the front longitudinal beam outer plate and the A column lower inner plate, the front wall front cross beam is additionally arranged, a force transmission path is increased, collision impact force is dispersed to the A column, unnecessary bending deformation of the front cabin longitudinal beam is avoided, the invasion amount of the front wall plate is reduced, and a passenger cabin is stressed more evenly.

Description

Technical Field

[0001] This utility model relates to the field of automotive front compartment technology, and in particular to a front compartment longitudinal beam structure. Background Technology

[0002] The front compartment, located at the front of the vehicle, provides installation space for the vehicle's powertrain, cooling system, and air conditioning system, and functions to absorb and transfer collision energy. The design of the entire beam structure of the front compartment should ensure the integrity of the passenger compartment during a crash. Among them, the front compartment longitudinal beams are important load-bearing components of the vehicle. During a collision, the front compartment longitudinal beams are the main energy-absorbing components, and they play a crucial role in improving the performance of the vehicle's frame.

[0003] Currently, common non-load-bearing body longitudinal beam structures include Figure 1 As shown, the front compartment longitudinal beam is only connected to the sill beam and the front floor longitudinal beam. The front compartment longitudinal beam transmits force to the sill beam, the floor longitudinal beam and the central tunnel sub-beam through 2 to 3 force transmission paths. The force transmission paths are concentrated in the lower part of the vehicle body. In frontal collision, side collision and MPDB collision tests, the bending efficiency of the front compartment longitudinal beam is poor and the intrusion of the front bulkhead assembly is too large, which is not conducive to the protection of the passenger compartment. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of the existing technology and provide a front compartment longitudinal beam structure to solve the problem that the force transmission path of the front compartment longitudinal beam is concentrated in the lower part of the vehicle body.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a forward cabin longitudinal beam structure, comprising:

[0007] Two symmetrically arranged front cabin longitudinal beams, each front cabin longitudinal beam body including a front longitudinal beam outer plate, a front bulkhead front crossbeam, a front crossbeam diagonal brace upper plate, and a front sill connecting crossbeam;

[0008] The lower part of the front section of the front longitudinal beam is provided with the upper plate of the front crossbeam diagonal brace. The upper plate of the front crossbeam diagonal brace and the front sill connecting beam are connected to the front floor and the front sill body. The upper part of the upper plate of the front crossbeam diagonal brace is provided with the front front beam. The front front beam is connected to the outer plate of the front longitudinal beam and the inner plate under the A-pillar.

[0009] Furthermore, it also includes a front longitudinal beam inner plate, which is provided on the inner side of the front longitudinal beam body and is connected to the front floor through the front longitudinal beam inner plate.

[0010] In the above technical solution, the forward cabin longitudinal beam structure provided by this utility model has the following advantages:

[0011] The front cabin longitudinal beam structure designed in this utility model adds a front crossbeam to the main body of the front cabin longitudinal beam. The front crossbeam connects the outer plate of the front longitudinal beam to the inner plate under the A-pillar, increasing the force transmission channel and transmitting the force to the A-pillar, the front floor longitudinal beam and the sill beam, dispersing and guiding it to the entire vehicle frame. This makes the force on the passenger compartment more even, avoids unnecessary bending and deformation of the front cabin longitudinal beam, reduces impact, reduces the amount of intrusion of the front bulkhead, and ensures that the passenger compartment does not deform. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 This is a schematic diagram of a non-load-bearing vehicle body longitudinal beam structure in the prior art;

[0014] Figure 2 This is a front view of a front cabin longitudinal beam structure disclosed in this utility model;

[0015] Figure 3 This is a top view of a front cabin longitudinal beam structure disclosed in this utility model.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1-Inner panel under A-pillar; 2-Outer panel of front longitudinal beam; 3-Front front crossbeam; 4-Upper panel of front crossbeam diagonal brace; 5-Front sill connecting crossbeam; 6-Front sill body; 7-Inner panel of front longitudinal beam; 8-Front floor. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0019] See Figure 1 As shown;

[0020] A utility model discloses a front cabin longitudinal beam structure, comprising:

[0021] Two symmetrically arranged longitudinal beams in the forward compartment;

[0022] The main body of the front longitudinal beam includes the front longitudinal beam outer plate 2, the front bulkhead front crossbeam 3, the front crossbeam diagonal brace upper plate 4, the front sill connecting crossbeam 5, and the front longitudinal beam inner plate 7;

[0023] The lower part of the front section of the main body of the front longitudinal beam is connected to the front floor 8 and the front sill body 6 via the front crossbeam diagonal bracing beam upper plate 4 and the front sill connecting beam 5. The front crossbeam 3 is provided on the upper part of the front crossbeam diagonal bracing beam upper plate 4, and the front longitudinal beam outer plate 2 is connected to the A-pillar lower inner plate 1 via the front crossbeam 3.

[0024] The main body of the front longitudinal beam also includes a front longitudinal beam inner plate 7, which is provided on the inner side of the main body of the front longitudinal beam and is connected to the front floor 8 through the front longitudinal beam inner plate 7.

[0025] In the front longitudinal beam structure, the lower part of the front longitudinal beam is connected to the front floor 8 and the front sill body 6 via the upper plate 4 of the front crossbeam diagonal brace beam and the front sill connecting beam 5. A front front crossbeam 3 is added above the upper plate 4 of the front crossbeam diagonal brace beam to strengthen the front longitudinal beam structure. The front front crossbeam 3 connects the outer plate 2 of the front longitudinal beam to the inner plate 1 under the A-pillar, increasing the force transmission path and optimizing the global distribution of force. This allows the external force to be effectively transmitted and dispersed to multiple key parts such as the A-pillar, the front floor longitudinal beam, and the sill beam during a collision or under stress, avoiding bending deformation of the front longitudinal beam caused by stress concentration and improving the overall stability and safety of the passenger compartment.

[0026] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A front bay stringer structure, characterized by, Comprise: Two symmetrical front cabin longitudinal beam bodies, which comprise front longitudinal beam outer plates (2), front wall front cross beams (3), front cross beam inclined support beam upper plates (4) and front rocker connecting cross beams (5); The front section of the front cabin longitudinal beam body is provided with the front cross beam inclined support beam upper plate (4) at the lower part, which is connected with the front floor (8) and the front rocker body (6) through the front cross beam inclined support beam upper plate (4) and the front rocker connecting cross beam (5), and the upper part of the front cross beam inclined support beam upper plate (4) is provided with the front wall front cross beam (3), which connects the front longitudinal beam outer plate (2) with the A column lower inner plate (1).

2. A forward compartment stringer structure according to claim 1, wherein ； Further comprising front longitudinal beam inner plates (7), which are arranged on the inner side of the front cabin longitudinal beam body and connected with the front floor (8) through the front longitudinal beam inner plates (7).

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