Automobile front longitudinal beam reinforcing structure

Abstract

The utility model provides an automobile front longitudinal beam reinforcing structure which is characterized in that a front longitudinal beam body comprises a straight section and an arc-shaped section which are sequentially connected, a filling piece is arranged at the junction position of the straight section and the arc-shaped section of the front longitudinal beam body, and the filling piece supports longitudinal beam plate bodies on the opposite sides in the width direction and the vertical direction of an automobile. The bending strength of the front longitudinal beam body can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts, and particularly relates to a reinforcing structure for an automobile front longitudinal beam. Background Art

[0002] The existing automobile front longitudinal beam structure is generally formed by secondary welding after sheet metal stamping, and then fastened to the front end of the automobile front baffle by bolts after forming. The front longitudinal beam structure includes a straight section extending along the front and rear directions of the vehicle body in its axial direction and an arc section continuous with the front end and bent along the arc of the automobile front baffle between the engine compartment and the cab, and the arc section is continuous and extends along the automobile front baffle.

[0003] For example, a vehicle front longitudinal beam (publication number: CN 116529148 A, hereinafter referred to as the existing document) discloses a vehicle front longitudinal beam, which includes an inner side wall arranged opposite to the outer side wall; an outer groove formed on the outer side wall along the vehicle body length direction and having a first groove surface; and an inner groove formed on the inner side wall along the vehicle body length direction and having a second groove surface. The outer groove includes a region where the groove depth changes along the vehicle body length direction. The above solution optimizes the process and structure at the front end of the automobile front longitudinal beam structure. Therefore, in the case of a frontal collision accident, the junction of the straight section and the arc section of the front longitudinal beam is prone to bending and buckling. For this reason, the embodiment of the existing document discloses adding an outer side wall 11 inside the longitudinal beam to improve the strength at the junction of the straight section and the arc section. Since the whole plate surface of the outer side wall 11 is in the plumb direction, the bending strength in the plumb plane perpendicular to the vehicle width direction at the junction of the straight section and the arc section is improved, and there is little contribution to the bending strength in the horizontal plane. Summary of the Utility Model

[0004] The utility model provides a reinforcing structure for an automobile front longitudinal beam, aiming to improve the structural strength and bending resistance of the front longitudinal beam.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A reinforcing structure for an automobile front longitudinal beam, the front longitudinal beam body includes a straight section and an arc section connected in sequence, and a filler is arranged at the junction of the straight section and the arc section of the front longitudinal beam body, and the filler provides support for the longitudinal beam plate bodies on the opposite sides in the vehicle width direction and the up and down directions.

[0007] In the above solution, a filler is arranged at the junction of the straight section and the arc section of the front longitudinal beam body, and the filler provides support for the longitudinal beam plate bodies on the opposite sides in the vehicle width direction and the up and down directions, which can improve the bending strength of the front longitudinal beam body. Description of the Drawings

[0008] Figure 1It is a three-dimensional structural schematic diagram of the present utility model;

[0009] Figure 2 It is a structural schematic diagram of the main plate of the front longitudinal beam in the present utility model;

[0010] Figure 3 It is a structural schematic diagram of the auxiliary plate of the front longitudinal beam in the present utility model;

[0011] Figure 4 It is Figure 3 An enlarged schematic diagram of part A in Specific embodiments

[0012] Such as Figures 1 to 3 Shown is a reinforcing structure for an automotive front longitudinal beam. The front longitudinal beam body 1 includes a straight section 1a and an arc section 1b that are connected in sequence. A filling member 30 is provided at the junction of the straight section 1a and the arc section 1b of the front longitudinal beam body 1. The filling member 30 provides support for the longitudinal beam plates on the opposite sides in the vehicle width direction and the up and down direction.

[0013] In the above solution, a filling member 30 is provided in the beam cavity provided at the junction of the straight section 1a and the arc section 1b on the front longitudinal beam body 1. The size of the filling member 30 is the same as the inner cavity size of the front longitudinal beam body 1, and it provides support for the longitudinal beam plates on the opposite sides in the vehicle width direction and the up and down direction of the front longitudinal beam body 1, thereby improving the structural strength and bending resistance of the front longitudinal beam body 1.

[0014] Preferably, the filling member 30 is composed of a grid-like nylon skeleton 32 and a foamed plastic 31 wrapped outside the nylon skeleton 32. The nylon skeleton 32 is located in the middle of the filling member 30, and the foamed plastic 31 is wrapped on both the front and back sides of the nylon skeleton 32.

[0015] In the above solution, the nylon skeleton 32 is located in the middle of the filling member 30, and the foamed plastic 31 is wrapped on both the front and back sides of the nylon skeleton 32. The nylon skeleton 32 and the foamed plastic 31 form a layered structure. The grid-like nylon skeleton 32 located in the middle of the filling member 30 can improve the compressive performance of the filling member 30. At the same time, the foamed plastic 31 located on both the front and back sides of the nylon skeleton 32 and wrapping the nylon skeleton 32 can provide buffering for the nylon skeleton 32, improving the overall structural strength of the filling member 30, which helps to improve the structural strength and bending resistance of the front longitudinal beam body 1.

[0016] Furthermore, the front longitudinal beam body 1 is formed by combining and welding a front longitudinal beam auxiliary plate 10 and a front longitudinal beam main body plate 20. A front longitudinal beam reinforcing plate 40 is provided between the front longitudinal beam auxiliary plate 10 and the front longitudinal beam main body plate 20 at the straight section 1a, which is attached to the side of the front longitudinal beam main body plate 20 along the vehicle length direction. The filler 30 provides support to the front longitudinal beam reinforcing plate 40 along the vehicle width direction. The filler 30 provides support to the front longitudinal beam reinforcing plate 40 along the vehicle width direction, thereby enhancing the structural strength and bending resistance of the front longitudinal beam body 1.

[0017] Preferably, a front connection seat 33 is provided in the middle of the front side of the filler 30 along the vehicle length direction, and a rear connection seat 34 is provided at the upper part of the rear side along the vehicle length direction. The front connection seat 33 and the rear connection seat 34 are connected to the nylon skeleton 32. The pin is fixedly connected to the filler 30, the front longitudinal beam reinforcing plate 40, and the longitudinal beam main body plate 20 through the connection hole on the rear connection seat 34.

[0018] In the above solution, a front connection seat 33 is provided in the middle of the front side of the filler 30 along the vehicle length direction, and a rear connection seat 34 is provided at the upper part of the rear side. The nylon skeleton 32 extends towards the front connection seat 33 and the rear connection seat 34 respectively near the side of the longitudinal beam main body plate 20 and is connected to the front connection seat 33 and the rear connection seat 34, further enhancing the structural strength of the nylon skeleton 32. At the same time, the front connection seat 33 and the rear connection seat 34 also have relatively high connection strength. At this time, the pin passes through the plate surfaces of the front longitudinal beam reinforcing plate 40 and the longitudinal beam main body plate 20 at the straight section 1a through the connection hole on the front connection seat 33, and then the pin passes through the plate surface of the front longitudinal beam main body plate 20 at the arc section 1b through the connection hole on the rear connection seat 34, so as to realize the stable connection between the filler 30, the front longitudinal beam reinforcing plate 40, and the longitudinal beam main body plate 20, which helps to improve the connection strength between the filler 30 and the front longitudinal beam reinforcing plate 40 and enhance the installation stability of the filler 30.

[0019] Furthermore, in order to facilitate the arrangement of the filler 30, the lower bottom surface of the filler 30 is attached to the intersection position of the straight section 1a and the arc section 1b.

[0020] In the specific implementation, the filler 30 is first placed on the front longitudinal beam main body plate 20, and the lower bottom surface of the filler 30 is attached to the arc part of the intersection position of the straight section 1a and the arc section 1b. At the same time, in order to ensure sufficient stability between the filler 30 and the front longitudinal beam body 1, the size of the filler 30 is the same as the inner cavity size of the front longitudinal beam body 1. According to Figure 2After the filler 30 is placed in position as shown, the preliminary installation is achieved by using a pin to penetrate through the front longitudinal beam reinforcement plate 40 at the straight section 1a and the plate surface of the longitudinal beam main body plate 20 through the connection hole on the front connection seat 33. Then, the assembly of the filler 30 is completed by using a pin to penetrate through the plate surface of the front longitudinal beam main body plate 20 at the arc section 1b through the connection hole on the rear connection seat 34. After that, the front longitudinal beam auxiliary plate 10 and the front longitudinal beam main body plate 20 are combined and welded, and the assembly of the front longitudinal beam body 1 is completed.

Claims

1. A reinforcing structure for the front longitudinal beam of an automobile, characterized in that: The front longitudinal beam body (1) includes a straight section (1a) and an arc section (1b) that are connected in sequence. A filler (30) is provided at the junction of the straight section (1a) and the arc section (1b) of the front longitudinal beam body (1). The filler (30) provides support for the longitudinal beam plates on the opposite sides in the vehicle width direction and the up and down direction.

2. The front longitudinal beam reinforcement structure of an automobile according to claim 1, characterized in that: The filler (30) is composed of a grid-like nylon skeleton (32) and a foamed plastic (31) wrapped outside the nylon skeleton (32).

3. The front longitudinal beam reinforcement structure of an automobile according to claim 2, characterized in that: The nylon skeleton (32) is located in the middle of the filler (30), and the foamed plastic (31) is wrapped on the front and rear sides of the nylon skeleton (32).

4. The front longitudinal beam reinforcement structure of an automobile according to claim 3, characterized in that: The front longitudinal beam body (1) is formed by combining and welding a front longitudinal beam sub-plate (10) and a front longitudinal beam main plate (20). A front longitudinal beam reinforcing plate (40) that fits along the vehicle length direction on the side of the front longitudinal beam main plate (20) is provided between the front longitudinal beam sub-plate (10) and the front longitudinal beam main plate (20) at the straight section (1a). The filler (30) provides support for the front longitudinal beam reinforcing plate (40) in the vehicle width direction.

5. The front longitudinal beam reinforcement structure of an automobile according to claim 4, characterized in that: A front connection seat (33) is provided in the middle of the front side of the filler (30) along the vehicle length direction, and a rear connection seat (34) is provided at the upper part of the rear side along the vehicle length direction. The front connection seat (33) and the rear connection seat (34) are connected to the nylon skeleton (32). A pin passes through the connection hole on the front connection seat (33) through the front longitudinal beam reinforcing plate (40) and the plate surface of the longitudinal beam main plate (20), and the pin is fixedly connected to the filler (30), the front longitudinal beam reinforcing plate (40), and the longitudinal beam main plate (20) through the connection hole on the rear connection seat (34).

6. The front longitudinal beam reinforcement structure of an automobile according to claim 1, characterized in that: The lower bottom surface of the filler (30) is attached to the junction of the straight section (1a) and the arc section (1b).

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