A front longitudinal beam connection structure

Abstract

This invention provides a front longitudinal beam connection structure, belonging to the field of automotive technology. It includes a separate front longitudinal beam body and a front longitudinal beam connecting plate. The upper front end of the front longitudinal beam body is connected to the front longitudinal beam connecting plate longitudinally and vertically. The upper front end of the front longitudinal beam body is also connected to the front wheel arch assembly longitudinally and vertically. The front end of the front longitudinal beam body overlaps with the front fender crossbeam and is connected to the front fender crossbeam laterally and vertically through the front longitudinal beam connecting plate. This invention solves the technical problems of how to effectively improve the safety performance and stamping difficulties of the front longitudinal beam connection structure in the prior art.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and more particularly to a front longitudinal beam connection structure. Background Technology

[0002] In a car collision, the front longitudinal beam is the primary force transmission path. High-strength steel is required to improve safety. However, stamping high-strength steel is extremely difficult due to the limited forming depth and the inherent limitations of high-strength steel, making the flanged edges of the longitudinal beam prone to cracking during the stamping process. To prevent cracking, large areas of the longitudinal beam need to be trimmed and cut away, reducing the effective overlap area. This inevitably leads to a decrease in safety performance, as energy cannot be fully transferred during a collision, resulting in increased intrusion into the front fender, greater deformation of the passenger compartment, and increased occupant injury. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a front longitudinal beam connection structure, resolving the technical challenges of effectively improving the safety performance and stamping difficulties of existing front longitudinal beam connection structures. The numerous technical effects of the preferred solutions among the various technical solutions provided by this invention are detailed below.

[0004] To achieve the above objectives, the present invention provides a front longitudinal beam connection structure, comprising a front longitudinal beam body and a front longitudinal beam connecting plate that are separately disposed. The upper front surface of the front longitudinal beam body is connected to the front longitudinal beam connecting plate in the longitudinal and vertical directions. The upper front side of the front longitudinal beam body is connected to the front wheel arch assembly in the vertical direction. The front end of the front longitudinal beam body overlaps with the front baffle crossbeam and is connected to the front baffle crossbeam in the transverse and vertical directions through the front longitudinal beam connecting plate.

[0005] Optionally, the front longitudinal beam connecting plate includes a connecting plate body and a folded portion folded along the edge of the connecting plate body.

[0006] Optionally, the front end of the front longitudinal beam body forms a vertical folded portion, and the connecting plate body and the folded portion are welded together with the front longitudinal beam body at the vertical folded portion in a longitudinal and vertical manner.

[0007] Optionally, the front wheel arch assembly and the front longitudinal beam body are welded together longitudinally and vertically at their vertical folding portions.

[0008] Optionally, the front end of the front longitudinal beam connecting plate and the front longitudinal beam body are connected to the front baffle beam in a three-layer spot-welded connection from top to bottom in the transverse direction.

[0009] Optionally, the folded portion of the front longitudinal beam body is configured to have a groove and a protrusion.

[0010] Optionally, a front longitudinal beam reinforcing plate and a front longitudinal beam cover plate are provided on the lower side of the front longitudinal beam body, and the front longitudinal beam body, the front longitudinal beam reinforcing plate, and the front longitudinal beam cover plate together form a hollow rectangular front longitudinal beam.

[0011] Optionally, the front wheel arch assembly is also welded to the front longitudinal beam reinforcement.

[0012] Optionally, the front longitudinal beam cover plate is disposed inside the front longitudinal beam body and the front longitudinal beam reinforcing plate.

[0013] Optionally, the front longitudinal beam cover plate is welded to the front longitudinal beam body and the front longitudinal beam reinforcing plate respectively.

[0014] The technical solution of the present invention may include the following beneficial effects:

[0015] This invention discloses a front longitudinal beam connection structure. When the high-strength steel used for the longitudinal beam body makes molding difficult, a new design concept was adopted: partial components at the rear of the front longitudinal beam are used, allowing the smaller front longitudinal beam connecting plates to effectively connect with the front fender, front fender crossbeam, and front wheel arch assembly. During a collision, the force is effectively transferred from the longitudinal beam root to the front fender, front fender crossbeam, and front wheel arch assembly, solving the problem of excessive force concentration at a single point and improving energy absorption. This allows the structure to fully distribute the force generated during the collision and effectively transfer and absorb the force, thereby reducing fender intrusion and minimizing occupant injury. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of a front longitudinal beam connection structure according to an embodiment of the present invention;

[0018] Figure 2 This is an exploded structural diagram of a front longitudinal beam connection structure according to an embodiment of the present invention;

[0019] Figure 3 for Figure 1 Schematic diagram of section A-A;

[0020] Figure 4 for Figure 1 Schematic diagram of section B-B.

[0021] The markings in the diagram are: 1. Front longitudinal beam body; 2. Front longitudinal beam connecting plate; 3. Front wheel arch assembly; 4. Front fender; 5. Front fender crossbeam; 6. Front longitudinal beam reinforcing plate; 7. Front longitudinal beam cover plate. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0023] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this invention is for describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0024] Figure 1 This is a schematic diagram of a front longitudinal beam connection structure according to an embodiment of the present invention, as shown below. Figures 1 to 4 As shown, the present invention provides a front longitudinal beam connection structure, including a front longitudinal beam body 1 and a front longitudinal beam connecting plate 2, which are separately arranged. The upper front surface of the front longitudinal beam body 1 is connected to the front longitudinal beam connecting plate 2 in the longitudinal and vertical directions. The upper front side of the front longitudinal beam body 1 is connected to the front wheel arch assembly 3 in the vertical and longitudinal directions. The front end of the front longitudinal beam body 1 overlaps with the front baffle beam 5 and is connected to the front baffle beam 5 in the transverse and vertical directions through the front longitudinal beam connecting plate 2.

[0025] Specifically, by employing a partial component at the rear of the front longitudinal beam body 1, a longitudinal (Y-direction) and vertical (Z-direction) connection is formed between the front longitudinal beam connecting plate 2 and the upper surface of the front end of the front longitudinal beam body 1. The front longitudinal beam body 1 is connected to the front wheel arch assembly 3 in both the longitudinal and vertical directions. The front longitudinal beam body 1 and the front wheel arch assembly 3 are connected to the front fender beam 5 in both the transverse (X-direction) and vertical directions. This allows the smaller front longitudinal beam connecting plate 2 to effectively connect with the front fender 4, the front fender beam 5, and the front wheel arch assembly 3. This enables it to effectively transmit force during a collision. During a collision, the force can be effectively transmitted in the X, Y, and Z directions from the root of the longitudinal beam to the front fender 4, the front fender beam 5, and the front wheel arch assembly 3, solving the problem of excessive force concentration at a single point and improving energy absorption. This allows the beam to fully distribute the force generated during the collision and effectively transmit force and absorb energy.

[0026] As an optional implementation, the front longitudinal beam connecting plate 2 includes a connecting plate body and a folded portion that folds over the edge of the connecting plate body.

[0027] Specifically, the front longitudinal beam connecting plate 2 is provided with a connecting plate body and a folding part to adapt to the surface structure of the connection between the front longitudinal beam body 1 and the front baffle beam 5, effectively connecting the two components.

[0028] As an optional implementation, the front end of the front longitudinal beam body 1 forms a vertical folded portion, and the connecting plate body and the folded portion of the front longitudinal beam connecting plate 2 are welded together with the front longitudinal beam body 1 at the vertical folded portion in a longitudinal and vertical manner.

[0029] As an optional implementation, the front wheel arch assembly 3 and the front longitudinal beam body 1 are connected by longitudinal and vertical welding at their vertical folding portions.

[0030] As an optional implementation, the front longitudinal beam connecting plate 2, the front end of the front longitudinal beam body 1, and the front baffle beam 5 are connected by three layers of spot welding in the transverse direction from top to bottom.

[0031] Specifically, the front longitudinal beam connecting plate 2, as a separate small part, is welded to connect the front longitudinal beam body 1 with the front wheel arch assembly 3 and the front fender crossbeam 5 in the X, Y, and Z directions. This effectively serves as a connection and reduces the end connection structure of the front longitudinal beam body 1, thereby reducing stamping problems during the processing of the front longitudinal beam body 1 and effectively improving its structural stability.

[0032] As an optional implementation, the folded portion of the front longitudinal beam connecting plate 2 is configured to have a groove and a protrusion.

[0033] Specifically, by setting up a folding part, the front longitudinal beam body 1 and the front baffle crossbeam 5 are better fitted and connected. The structure of the groove and the protrusion can achieve weight reduction on the one hand, and provide a welding position on the other hand.

[0034] As an optional implementation, a front longitudinal beam reinforcing plate 6 and a front longitudinal beam cover plate 7 are provided on the lower side of the front longitudinal beam body 1, and the front longitudinal beam body 1, the front longitudinal beam reinforcing plate 6, and the front longitudinal beam cover plate 7 together form a hollow rectangular front longitudinal beam.

[0035] Specifically, the front longitudinal beam is formed by the front longitudinal beam body 1, the front longitudinal beam reinforcing plate 6, and the front longitudinal beam cover plate 7 to form a hollow rectangular structure, which improves the strength of the front longitudinal beam and can also play a role in absorbing collision energy.

[0036] As an optional implementation, the upper side of the front longitudinal beam body 1 is welded to the front wheel arch assembly 3.

[0037] As an optional implementation, the front wheel arch assembly 3 is also welded to the front longitudinal beam reinforcement 6.

[0038] As an optional implementation, the front longitudinal beam cover plate 7 is disposed on the inner side of the front longitudinal beam body 1 and the front longitudinal beam reinforcing plate 6.

[0039] As an optional implementation, the front longitudinal beam cover plate 7 is welded to the front longitudinal beam body 1 and the front longitudinal beam reinforcing plate 6 respectively.

[0040] This invention has a partial component at the rear of the front longitudinal beam. The smaller component, the front longitudinal beam connecting plate 2, is spot-welded to the upper side of the longitudinal beam body on three surfaces: the longitudinal Y direction, the vertical Z direction, and the longitudinal Y direction (e.g., Figure 3 (As shown) The front longitudinal beam body assembly is formed by connecting the front longitudinal beam body's Y-direction flange to the front wheel arch assembly via spot welding of three layers of plates in the Y and Z directions. This, in turn, forms the longitudinal beam wheel arch assembly and the front baffle assembly (front baffle crossbeam and front baffle) via spot welding of three sides in the X and Z directions. This effectively transmits the impact force from the root of the longitudinal beam in the X, Y, and Z directions.

[0041] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A front longitudinal beam connection structure, characterized in that, The device includes a front longitudinal beam body and a front longitudinal beam connecting plate, which are set separately. The upper front end of the front longitudinal beam body is connected to the front longitudinal beam connecting plate in the longitudinal and vertical directions. The upper front end of the front longitudinal beam body is connected to the front wheel arch assembly in the longitudinal and vertical directions. The front end of the front longitudinal beam body overlaps with the front baffle beam and is connected to the front baffle beam in the transverse and vertical directions through the front longitudinal beam connecting plate. The front longitudinal beam connecting plate includes a connecting plate body and a folded portion folded along the edge of the connecting plate body; The front end of the front longitudinal beam body forms a vertical folded section, and the connecting plate body and the folded section form a longitudinal and vertical welded connection with the front longitudinal beam body at the vertical folded section. The front wheel arch assembly and the front longitudinal beam body are welded together longitudinally and vertically at their vertical folding portions; The front longitudinal beam connecting plate, the front end of the front longitudinal beam body, and the front baffle beam are connected by three layers of spot welding in the transverse direction from top to bottom. A front longitudinal beam reinforcing plate and a front longitudinal beam cover plate are provided on the lower side of the front longitudinal beam body. The front longitudinal beam body, the front longitudinal beam reinforcing plate, and the front longitudinal beam cover plate together form a hollow rectangular front longitudinal beam. The front wheel arch assembly is also welded to the front longitudinal beam reinforcing plate; The front longitudinal beam cover plate is disposed on the inner side of the front longitudinal beam body and the front longitudinal beam reinforcing plate.

2. The front longitudinal beam connection structure according to claim 1, characterized in that, The folded portion of the connecting plate body is configured to have a groove and a protrusion.

3. The front longitudinal beam connection structure according to claim 1, characterized in that, The front longitudinal beam cover plate is welded to the front longitudinal beam body and the front longitudinal beam reinforcing plate, respectively.

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