Front longitudinal beam connecting structure

Abstract

The invention provides a front longitudinal beam connecting structure and belongs to the technical field of automobiles, the front longitudinal beam connecting structure comprises a front longitudinal beam body and a front longitudinal beam connecting plate which are arranged in a split mode, the upper side of the front end of the front longitudinal beam body is connected with the front longitudinal beam connecting plate in the longitudinal direction and the vertical direction, and the upper side of the front end of the front longitudinal beam body is connected with a front wheel cover assembly in the longitudinal direction and the vertical direction. The front end of the front longitudinal beam body is in lap joint with a front baffle cross beam and is connected with the front baffle cross beam in the transverse direction and the vertical direction through the front longitudinal beam connecting plate. The technical problems that in the prior art, the safety performance of a front longitudinal beam connecting structure is effectively improved, and stamping is difficult are solved.

Description

Technical Field

[0001] The invention relates to the technical field of automobiles, and in particular to a front longitudinal beam connection structure. Background Art

[0002] The front longitudinal beam of a car body is the main force transmission path of the collision force during a collision. High-strength steel is required to improve safety performance. However, high-strength steel is very difficult to stamp. Due to the depth of the forming and the high-strength steel, the longitudinal beam body is prone to cracking at the flange during the stamping process. In order to avoid cracking, a large area of ​​trimming and cutting is required on the longitudinal beam body, and the effective overlap area is reduced, which will inevitably lead to a decrease in safety performance. The energy cannot be fully transmitted during the collision, resulting in an increase in the intrusion of the front fender, which in turn causes a large deformation of the passenger compartment and increased injuries to the occupants. Summary of the invention

[0003] In order to solve the above technical problems, the present invention invents a front longitudinal beam connection structure to solve the technical problems of how to effectively improve the safety performance and stamping difficulty of the front longitudinal beam connection structure in the prior art. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0004] To achieve the above-mentioned purpose, the present invention provides a front longitudinal beam connection structure, including a front longitudinal beam body and a front longitudinal beam connecting plate which are separately arranged, the front end upper surface of the front longitudinal beam body is connected to the front longitudinal beam connecting plate in the longitudinal and vertical directions, the front end upper side of the front longitudinal beam body is connected to the front wheel cover assembly in the vertical direction, the front end end of the front longitudinal beam body is overlapped with the front fender cross beam and is connected to the front fender cross beam 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 an edge of the connecting plate body.

[0006] Optionally, a vertical folded portion is formed at the front end of the front longitudinal beam body, and the connecting plate body and the folded portion are longitudinally and vertically welded to the vertical folded portion of the front longitudinal beam body.

[0007] Optionally, the front wheel cover assembly and the front longitudinal beam body are welded to each other longitudinally and vertically at the vertical folded portion thereof.

[0008] Optionally, the front longitudinal beam connecting plate, the front end of the front longitudinal beam body and the front fender cross beam are connected by three-layer spot welding 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 reinforcement plate and a front longitudinal beam cover plate are arranged on the lower side of the front longitudinal beam body, and the front longitudinal beam body, the front longitudinal beam reinforcement plate and the front longitudinal beam cover plate together form a hollow rectangular front longitudinal beam.

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

[0012] Optionally, the front longitudinal beam cover plate is arranged on the inner side of the front longitudinal beam body and the front longitudinal beam reinforcement plate.

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

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

[0015] The front longitudinal beam connection structure of the present invention adopts a new design concept in the design process when the longitudinal beam body is made of high-strength steel, which makes it difficult to form: the rear part of the front longitudinal beam is used to make the small front longitudinal beam connection plate effectively connected with the front fender, the front fender cross beam and the front wheel cover assembly. During the collision, the force can be effectively transmitted to the front fender, the front fender cross beam and the front wheel cover assembly at the root of the longitudinal beam, solving the problem of excessive force concentration in a certain place and energy absorption, so that it can fully share the force generated during the collision, and effectively transmit the force and absorb the energy, so as to reduce the intrusion of the fender and reduce the degree of injury to the occupants. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

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

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

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

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

[0021] Markings in the figure: 1. Front longitudinal beam body; 2. Front longitudinal beam connecting plate; 3. Front wheel cover assembly; 4. Front fender; 5. Front fender cross beam; 6. Front longitudinal beam reinforcement plate; 7. Front longitudinal beam cover plate. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0023] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0024] Figure 1 is a schematic diagram of a front longitudinal beam connection structure according to an embodiment of the present invention. 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 front end upper 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 front end upper side of the front longitudinal beam body 1 is connected to the front wheel cover assembly 3 in the vertical and longitudinal directions, the front end end of the front longitudinal beam body 1 is overlapped with the front fender cross beam 5 and is connected to the front fender cross beam 5 in the transverse and vertical directions through the front longitudinal beam connecting plate 2.

[0025] Specifically, by adopting the method of partially dividing the rear part of the front longitudinal beam body 1, the front longitudinal beam connecting plate 2 is connected with the front end upper surface of the front longitudinal beam body 1 in the longitudinal direction (Y direction) and the vertical direction (Z direction), the front longitudinal beam body 1 is connected with the front wheel cover assembly 3 in the longitudinal direction and the vertical direction, and the front longitudinal beam body 1 and the front wheel cover assembly 3 are connected with the front fender cross beam 5 in the transverse direction (X direction) and the vertical direction, so that the small front longitudinal beam connecting plate 2 can effectively connect with the front fender 4, the front fender cross beam 5 and the front wheel cover assembly 3. It can effectively play a role in force transmission during the collision process. During the collision process, the force can be effectively transmitted to the front fender 4, the front fender cross beam 5 and the front wheel cover assembly 3 in the X, Y and Z directions at the root of the longitudinal beam, solving the problem of excessive force concentration in a certain place and energy absorption, so that it can fully share the force generated during the collision process, and effectively transmit the force and absorb the energy.

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

[0027] Specifically, the front longitudinal beam connecting plate 2 is provided with a connecting plate body and a folded portion to adapt to the surface structure setting at the connection between the front longitudinal beam body 1 and the front fender cross beam 5, thereby effectively connecting the two components.

[0028] As an optional embodiment, a vertical folded portion is formed at the front end of the front longitudinal beam body 1, and the connecting plate body and the folded portion of the front longitudinal beam connecting plate 2 form a longitudinal and vertical welding connection with the vertical folded portion of the front longitudinal beam body 1.

[0029] As an optional embodiment, the front wheel cover assembly 3 and the front longitudinal beam body 1 form a longitudinal and vertical welding connection with the front longitudinal beam body 1 at the vertical folded portion thereof.

[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 fender cross beam 5 are connected by three-layer spot welding from top to bottom in the transverse direction.

[0031] Specifically, the front longitudinal beam connecting plate 2 is a separate small part that is connected by welding to connect the front longitudinal beam body 1 with the front wheel cover assembly 3 and the front fender cross beam 5 in the X, Y and Z directions, which effectively plays a connecting role and reduces the end connection structure of the front longitudinal beam body 1, thereby reducing the stamping problem of the front longitudinal beam body 1 during the processing process and effectively improving the structural stability.

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

[0033] Specifically, by providing the folded portion, the front longitudinal beam body 1 and the front fender cross beam 5 can be better fitted and connected, and by the structural setting of the groove and the raised portion, on the one hand, a weight reduction effect can be achieved, and on the other hand, a welding position can be provided.

[0034] As an optional implementation, a front longitudinal beam reinforcement 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 reinforcement 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 surrounded by the front longitudinal beam body 1, the front longitudinal beam reinforcement 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 collision energy absorption.

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

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

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

[0040] The present invention is to separate the small front longitudinal beam connecting plate 2 from the rear part of the front longitudinal beam, and spot weld the small front longitudinal beam connecting plate 2 and the upper side of the longitudinal beam body in the longitudinal Y direction and the vertical Z direction (such as Figure 3 The front longitudinal beam body assembly is formed by connecting the Y-direction flange of the front longitudinal beam body to the front wheel cover assembly through three-layer spot welding in the Y and Z directions, and then the longitudinal beam wheel cover assembly and the front fender assembly (front fender crossbeam and front fender) are connected through three-surface spot welding in the transverse X and Z directions. This effectively transmits the collision force in the X, Y and Z directions at the root of the longitudinal beam.

[0041] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does 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: It includes a front longitudinal beam body and a front longitudinal beam connecting plate which are separately arranged, the front end upper side of the front longitudinal beam body is connected to the front longitudinal beam connecting plate in the longitudinal and vertical directions, the front end upper side of the front longitudinal beam body is connected to the front wheel cover assembly in the longitudinal and vertical directions, the front end portion of the front longitudinal beam body overlaps the front fender cross beam and is connected to the front fender cross beam in the transverse and vertical directions through the front longitudinal beam connecting plate.

2. The front longitudinal beam connection structure according to claim 1, characterized in that: The front longitudinal beam connecting plate comprises a connecting plate body and a folded portion folded along an edge of the connecting plate body.

3. The front longitudinal beam connection structure according to claim 2, characterized in that: A vertical folding portion is formed at the front end of the front longitudinal beam body, and the connecting plate body and the folding portion are longitudinally and vertically welded to the vertical folding portion of the front longitudinal beam body.

4. The front longitudinal beam connection structure according to claim 3, characterized in that: The front wheel cover assembly and the front longitudinal beam body are welded to each other longitudinally and vertically at the vertical folded portion thereof.

5. The front longitudinal beam connection structure according to claim 4, characterized in that: The front longitudinal beam connecting plate, the front end of the front longitudinal beam body and the front baffle cross beam are connected by three-layer spot welding from top to bottom in the transverse direction.

6. The front longitudinal beam connection structure according to claim 5, characterized in that: The folded portion of the connecting plate body is configured to have a groove and a protrusion.

7. The front longitudinal beam connection structure according to claim 6, characterized in that: A front longitudinal beam reinforcement plate and a front longitudinal beam cover plate are arranged on the lower side of the front longitudinal beam body. The front longitudinal beam body, the front longitudinal beam reinforcement plate and the front longitudinal beam cover plate are combined to form a hollow rectangular front longitudinal beam.

8. The front longitudinal beam connection structure according to claim 7, characterized in that: The front wheel cover assembly is also welded to the front longitudinal beam reinforcement plate.

9. The front longitudinal beam connection structure according to claim 8, characterized in that: The front longitudinal beam cover plate is arranged on the inner side of the front longitudinal beam body and the front longitudinal beam reinforcement plate.

10. The front longitudinal beam connection structure according to claim 9, characterized in that: The front longitudinal beam cover plate is respectively connected to the front longitudinal beam body and the front longitudinal beam reinforcement plate by welding.

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