Automobile front longitudinal beam and automobile

Abstract

The utility model provides an automobile front longitudinal beam and an automobile, and belongs to the field of front longitudinal beams. A first shell is arranged on the side, facing the interior of the automobile, of the front longitudinal beam; the second shell is arranged on the side, facing the exterior of the automobile, of the front longitudinal beam and defines a hollow structure with the first shell. The reinforcing plate is clamped between the first shell and the second shell; the reinforcing plate extends in an S shape in the extending direction of the two ends of the front longitudinal beam, one end of the reinforcing plate is connected to the inner wall of the first shell, the other end of the reinforcing plate is connected to the inner wall of the second shell, the middle of the reinforcing plate is connected to the middle of the inner wall of the first shell or the middle of the inner wall of the second shell, and a plurality of cavities are formed in the hollow structure defined by the first shell.

Description

Technical Field

[0001] This utility model relates to the field of front longitudinal beam technology, and in particular to a front longitudinal beam for automobiles and an automobile. Background Technology

[0002] As the main longitudinal force transmission route of the vehicle body, the front longitudinal beam disperses the collision force rearward to the sill beam and A-pillar. Internal reinforcing plates control the collapse sequence of the front longitudinal beam, ensuring uniform and stable deformation. This effectively reduces A-pillar deformation, maintains the passenger compartment survival space, and protects occupant safety. Traditional front longitudinal beam structures involve adding multiple reinforcing plates within the beam cavity, resulting in complex welding processes. During a frontal collision, localized structural instability and uneven energy absorption deformation can occur. Chinese patent CN102785697B discloses a high-strength hot-rolled automotive longitudinal beam material and its manufacturing method, which strengthens the automotive longitudinal beam from a material perspective. How to strengthen the front longitudinal beam from a structural perspective is another direction for research and exploration by those skilled in the art. Utility Model Content

[0003] In view of this, the present invention proposes a front longitudinal beam for automobiles and an automobile, which solves the problem that the traditional front longitudinal beam structure, which adds multiple reinforcing plates to the cavity of the front longitudinal beam, causes local structural instability and uneven energy absorption deformation during a frontal collision.

[0004] The technical solution of this utility model is implemented as follows: This utility model provides a front longitudinal beam for automobiles, including a first housing disposed on the side of the front longitudinal beam facing the interior of the automobile; a second housing disposed on the side of the front longitudinal beam facing the exterior of the automobile and forming a hollow structure with the first housing; and a reinforcing plate sandwiched between the first housing and the second housing; wherein the reinforcing plate extends in an S-shape along the extension direction of both ends of the front longitudinal beam, one end of the reinforcing plate is connected to the inner wall of the first housing and the other end is connected to the inner wall of the second housing, and the middle part of the reinforcing plate is connected to the middle part of the inner wall of the first housing or the middle part of the inner wall of the second housing, so that a plurality of cavities are formed inside the hollow structure formed by the first housing.

[0005] Based on the above technical solutions, preferably, an inner groove is provided in the middle of the outer surface of the second shell, and a boss protruding towards the second shell is provided in the middle of the reinforcing plate, with the boss connected to the inner groove.

[0006] More preferably, the outer surface of the second housing is provided with a number of grooves along the extension direction of the front longitudinal beam, the edges of each groove are smoothly connected to the outer surface of the second housing, so that the outer surface of the second housing forms a contour with high and low undulations, and an indentation groove is provided in one of the grooves.

[0007] More preferably, one end of the groove extends to the side of the second housing in the direction perpendicular to the direction of extension of the front longitudinal beam.

[0008] More preferably, one end of one groove extends to one side of the second housing, and the end of the adjacent groove extends to the other side of the second housing.

[0009] More preferably, a number of protrusions are arranged in parallel on the surface of the reinforcing plate facing the first housing, with both ends of the protrusions extending along the extension direction of the front longitudinal beam.

[0010] More preferably, the protrusion is disposed between the end of the boss and the end of the reinforcing plate that connects to the first housing.

[0011] Based on the above technical solutions, preferably, a raised strip is provided on the surface of the first housing facing the interior of the vehicle, and the two ends of the raised strip extend along the extension direction of the front longitudinal beam.

[0012] Based on the above technical solutions, preferably, an energy-absorbing box is fitted inside the hollow structure formed by the first shell and the second shell at the end facing the front of the vehicle.

[0013] On the other hand, this utility model also provides a car that adopts the above-mentioned front longitudinal beam, with the two ends of the front longitudinal beam connected to the A-pillar and the door sill beam of the car, respectively.

[0014] The automobile front longitudinal beam and automobile of this utility model have the following advantages over the prior art:

[0015] (1) The present invention has a reinforcing plate sandwiched inside the front longitudinal beam of the hollow structure. The reinforcing plate adopts an S-shaped structure and integrates multiple traditional reinforcing plates, so that the front longitudinal beam forms a multi-section cavity structure. The S-shaped reinforcing plate assists the front longitudinal beam to deform along a preset path, disperses the impact force, and reduces the deformation of the passenger compartment. Therefore, in the case of a head-on collision, it can effectively improve the safety performance and simplify the production process.

[0016] (2) This utility model uses a local reinforcement scheme of inserting a reinforcing plate inside the front longitudinal beam, rather than thickening the inner and outer plates of the longitudinal beam as a whole, to reduce the weight of the vehicle body, reduce fuel consumption, and increase the driving range while ensuring strength. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the front longitudinal beam of this utility model;

[0019] Figure 2 This is a top sectional view of the front longitudinal beam of this utility model;

[0020] Figure 3 This is an exploded perspective view of the front longitudinal beam of this utility model;

[0021] Figure 4 This is an exploded perspective view of the front longitudinal beam of this utility model from another angle.

[0022] In the figure: 1. First shell; 2. Second shell; 201. Inner groove; 202. Groove; 3. Reinforcing plate; 31. Boss; 32. Raised strip; 4. Energy absorption box. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0024] like Figure 1 As shown, combined with Figure 2 , Figure 3 and Figure 4 The present invention relates to a front longitudinal beam for automobiles, comprising a first housing 1, a second housing 2, and a reinforcing plate 3.

[0025] The first housing 1 is located on the side of the front longitudinal beam facing the interior of the vehicle.

[0026] The second housing 2 is located on the side of the front longitudinal beam facing the outside of the vehicle and forms a hollow structure with the first housing 1. Both the first housing 1 and the second housing 2 are die-cast from a single sheet metal, rather than being assembled from several pieces, thus ensuring the structural strength of the first housing 1 or the second housing 2 itself.

[0027] The reinforcing plate 3 is sandwiched between the first housing 1 and the second housing 2. The reinforcing plate 3 is also made of a single die-cast plate. The reinforcing plate 3 extends in an S-shape along the two ends of the front longitudinal beam. One end of the reinforcing plate 3 is connected to the inner wall of the first housing 1 and the other end is connected to the inner wall of the second housing 2. The middle part of the reinforcing plate 3 is connected to the middle of the inner wall of the first housing 1 or the middle of the inner wall of the second housing 2, so that several cavities are formed inside the hollow structure enclosed by the first housing 1. The reinforcing plate 3 is designed with an S-shaped structure, with its two ends connected to the inner walls of the first shell 1 and the second shell 2 respectively, and its middle part also connected to one of the two shells. While ensuring the stability of the connection between the reinforcing plate 3 and the hollow structure, it creates a multi-segment cavity structure inside the front longitudinal beam, giving the front longitudinal beam good structural strength while maintaining a relatively light weight. On the other hand, the S-shaped reinforcing plate assists the front longitudinal beam in deforming along a preset path, which can disperse the impact force and reduce the deformation of the passenger compartment. Therefore, it can effectively improve safety performance in a head-on collision. Moreover, the reinforcing plate 2 in this embodiment integrates multiple traditional reinforcing plate structures. By inserting the reinforcing plate 2 inside the front longitudinal beam, local reinforcement of key areas of the front longitudinal beam is achieved. While ensuring structural strength and head-on collision safety, it can also reduce the weight of the front longitudinal beam and simplify its manufacturing process.

[0028] exist Figure 3 In a preferred embodiment shown, an inner groove 201 is provided in the middle of the outer surface of the second housing 2, and a boss 31 protruding towards the second housing 2 is provided in the middle of the reinforcing plate 3. The boss 31 is connected to the inner groove 201. The boss 31 and the inner groove 201 can be provided with matching holes and fastened with fastening bolts to ensure that the second housing 2 and the reinforcing plate 3 can be stably connected.

[0029] exist Figure 3 In a preferred embodiment shown, the outer surface of the second housing 2 is provided with a plurality of grooves 202 along the extension direction of the front longitudinal beam. The edges of each groove 202 are smoothly connected to the outer surface of the second housing 2, so that the outer surface of the second housing 2 forms a contour with varying heights. An indentation groove 201 is provided in one of the grooves 202. After the outer surface of the second housing 2 forms a contour with varying heights, the second housing 2 also forms an S-shaped structure similar to the reinforcing plate 3, which helps to improve the ability to disperse the impact force under the front longitudinal beam head-on collision condition, thereby improving the safety performance.

[0030] exist Figure 3 In a preferred embodiment shown, one end of the groove 202 extends to the side of the second housing 2 in the direction perpendicular to the extension direction of the front longitudinal beam, thereby enhancing the complexity of the contour of the outer surface of the second housing 2 to improve its ability to disperse impact force and also help to improve the structural strength of the second housing 2 itself.

[0031] exist Figure 3In a preferred embodiment shown, one end of one groove 202 extends to one side of the second housing 2, and the end of the adjacent groove 202 extends to the other side of the second housing 2. Therefore, the openings of the grooves 202 facing the side of the second housing 2 are alternately arranged on both sides of the second housing 2, which helps to improve the structural strength of the second housing 2 itself.

[0032] exist Figure 4 In a preferred embodiment shown, a plurality of protrusions 32 are arranged in parallel on the surface of the reinforcing plate 3 facing the first housing 1. The two ends of the protrusions 32 extend along the extension direction of the front longitudinal beam, which can improve the structural strength of the reinforcing plate 3 itself without increasing the thickness of the reinforcing plate 3 itself, thus reducing the mass of the front longitudinal beam.

[0033] exist Figure 4 In a preferred embodiment shown, the protrusion 32 is disposed between the protrusion 31 and the end of the reinforcing plate 3 that connects to the first housing 1, which can improve the structural strength of the reinforcing plate 3 itself.

[0034] exist Figure 4 In a preferred embodiment shown, a protrusion 32 is provided on the surface of the first housing 1 facing the interior of the vehicle. The two ends of the protrusion 32 extend along the extension direction of the front longitudinal beam, which can improve the structural strength of the first housing 1 itself without increasing the thickness of the first housing 1, thus reducing the mass of the front longitudinal beam.

[0035] exist Figure 1 In a preferred embodiment shown, an energy-absorbing box 4 is fitted inside the hollow structure formed by the first shell 1 and the second shell 2 at the end facing the front of the vehicle. The energy-absorbing box 4 can improve the energy absorption effect of the front longitudinal beam under frontal collision conditions and improve vehicle safety.

[0036] like Figure 1 As shown, combined with Figure 2 , Figure 3 and Figure 4 The present invention relates to a type of automobile, which adopts a front longitudinal beam of any of the above embodiments, with the two ends of the front longitudinal beam connected to the A-pillar and the door sill beam of the automobile, respectively.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automobile front side member characterized by comprising: include: The first housing (1) is disposed on the side of the front longitudinal beam facing the interior of the vehicle; The second housing (2) is disposed on the side of the front longitudinal beam facing the outside of the vehicle and forms a hollow structure with the first housing (1); A reinforcing plate (3) is sandwiched between the first housing (1) and the second housing (2); The reinforcing plate (3) extends in an S-shape along the two ends of the front longitudinal beam. One end of the reinforcing plate (3) is connected to the inner wall of the first shell (1) and the other end is connected to the inner wall of the second shell (2). The middle part of the reinforcing plate (3) is connected to the middle part of the inner wall of the first shell (1) or the middle part of the inner wall of the second shell (2), so that several cavities are formed inside the hollow structure enclosed by the first shell (1).

2. The automobile front longitudinal beam according to claim 1, characterized in that: The second housing (2) has an inner groove (201) in the middle of its outer surface, and the reinforcing plate (3) has a boss (31) protruding toward the second housing (2) in the middle, and the boss (31) is connected to the inner groove (201).

3. The automobile front longitudinal beam according to claim 2, characterized in that: The outer surface of the second housing (2) is provided with a plurality of grooves (202) along the extension direction of the front longitudinal beam. The edge of each groove (202) is smoothly connected to the outer surface of the second housing (2), so that the outer surface of the second housing (2) forms a contour with high and low undulations, and an indentation groove (201) is provided in one of the grooves (202).

4. The front rail according to claim 3, characterized in that: The groove (202) extends from one end in the direction perpendicular to the front longitudinal beam to the side of the second housing (2).

5. A front longitudinal beam for automobiles according to claim 4, characterized in that: One end of one of the grooves (202) extends to one side of the second housing (2), and the end of the adjacent groove (202) extends to the other side of the second housing (2).

6. The automotive front rail according to claim 2, characterized in that: The reinforcing plate (3) has several protrusions (32) arranged in parallel on the surface facing the first housing (1), and the two ends of the protrusions (32) extend along the extension direction of the front longitudinal beam.

7. The automotive front rail according to claim 6, characterized in that: The protrusion (32) is disposed between the boss (31) and the end of the reinforcing plate (3) that connects to the first housing (1).

8. The automotive front rail according to claim 1, characterized in that: The first housing (1) has a raised strip (32) on its surface facing the interior of the vehicle, and the two ends of the raised strip (32) extend along the extension direction of the front longitudinal beam.

9. The automotive front rail according to claim 1, characterized in that: An energy-absorbing box (4) is fitted inside the hollow structure formed by the first shell (1) and the second shell (2) facing the front of the vehicle.

10. An automobile characterized by comprising: The vehicle front longitudinal beam is described in any one of claims 1 to 9, wherein the two ends of the vehicle front longitudinal beam are respectively connected to the A-pillar and the door sill beam of the vehicle.

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