Body-in-white front frame joint structure

Abstract

The present invention provides a front frame joint structure of a body-in-white, including an "L"-shaped connecting plate, wherein a front lower longitudinal beam, a front pillar fixed to the upper side of the front lower longitudinal beam, and a front lower cross beam arranged on one side of the front lower longitudinal beam are fixed to the inner bottom of the connecting plate, and further comprising a front connecting plate arranged between the front lower longitudinal beam, the front pillar, and the front lower cross beam for fixing. The front connecting plate strengthens the connection between the front lower longitudinal beam, the front pillar, and the front lower cross beam. Here, the connection between the front lower longitudinal beam, the front pillar, and the front lower cross beam is a straight tubular extension, which is convenient for fitting connection.

Description

Technical Field

[0001] The invention relates to the field of body-in-white front end frame connection, and in particular to a body-in-white front end frame joint structure. Background Art

[0002] The quality of the stiffness performance of the front-end frame joint connection structure of the body-in-white has a great impact on the overall stiffness performance of the front end of the body-in-white. As the name suggests, the white car is a pure iron car, in the state of not spraying paint. The front-end frame joint connection structure of the body-in-white is usually composed of sheet metal parts welded together. A well-designed joint connection structure plays a key role in improving the stiffness performance of the front-end frame joint. However, the current joint connection has a limited contact surface, resulting in insufficient firmness. Therefore, how to increase the connection area and improve the strength of the joint is an urgent problem that technicians in this field need to solve. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a front end frame joint structure of a body-in-white, which solves the problems existing in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides a front frame joint structure of a body-in-white, including an "L"-shaped connecting plate, to which a front lower longitudinal beam, a front pillar fixed on the upper side of the front lower longitudinal beam, and a front lower cross beam arranged on one side of the front lower longitudinal beam are fixed at the inner bottom of the connecting plate, and a front connecting plate for fixing is arranged between the front lower longitudinal beam, the front pillar and the front lower cross beam. The front connecting plate strengthens the connection between the front lower longitudinal beam, the front pillar and the front lower cross beam. Here, the connection between the front lower longitudinal beam, the front pillar and the front lower cross beam is a straight tubular extension, which is convenient for fitting connection.

[0005] Optionally, the connecting plate includes a bottom plate and a vertically upward rear connecting plate formed by bending the rear end of the bottom plate upward, and the lower end of the front lower longitudinal beam is fixed on the bottom plate.

[0006] Optionally, the bottom plate extends to the lower side of the front lower cross beam, and the front lower cross beam is fixed on the bottom plate, thereby increasing the connection firmness between the bottom plate and the front lower cross beam.

[0007] Optionally, the front connecting plate is fixed between the front lower longitudinal beam and the front lower cross beam, and the front connecting plate extends to the front end surface of the front pillar and is fixed, thereby increasing the bottom fixing area.

[0008] Optionally, the front lower longitudinal beam and the rear connecting plate are fixedly connected to increase the fixing area.

[0009] Optionally, the front column is fixedly connected to the rear connecting plate to increase the fixing area.

[0010] Optionally, the front lower longitudinal beam, the front pillar, the front lower cross beam, the rear connecting plate, the bottom plate and the end surfaces of the front connecting plate are all welded together, which is stronger than bolt connection.

[0011] Optionally, the welding connection is carbon dioxide shielded welding.

[0012] Optionally, the rear connecting plate is trapezoidal in shape to reduce space occupancy.

[0013] Optionally, the front connecting plate is trapezoidal in shape to reduce space occupancy.

[0014] One of the above technical solutions has the following advantages or beneficial effects: 0 1. The "L"-shaped connecting plate fixes the front lower longitudinal beam and the front pillar not only from the bottom but also from the rear side. At the same time, the bottom of the connecting plate extends to fix the front lower cross beam. The front lower cross beam is also connected to the front lower longitudinal beam through the front connecting plate, so as to achieve multi-faceted fixation and improve stability and rigidity;

[0015] 2. The front connecting plate extends upward and is fixed to the front pillar, which increases the fixing area and improves stability and rigidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a front-end frame joint structure of a body-in-white provided by an embodiment of the present invention;

[0017] Figure 2 A schematic structural diagram of a connecting plate of a front-end frame joint structure of a body-in-white provided by an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of the connection between the connecting plate and the front lower longitudinal beam of the front frame joint structure of the body-in-white provided by an embodiment of the present invention;

[0019] Figure 4 An axonometric view of the front end frame joint structure of the body-in-white provided in an embodiment of the present invention without the front lower cross beam.

[0020] In the figure: 1. front lower longitudinal beam; 2. front pillar; 3. front lower cross beam; 4. rear connecting plate; 41. bottom plate; 5 5. front connecting plate; 6. carbon dioxide shielded welding. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figure 1-4As shown, the embodiment of the present invention provides a front frame joint structure of a body-in-white, including an "L"-shaped connecting plate, a front lower longitudinal beam 1, a front pillar 2 fixed to the upper side of the front lower longitudinal beam 1, and a front lower cross beam 3 arranged on one side of the front lower longitudinal beam 1 are fixed to the inner bottom of the connecting plate, and a front connecting plate 5 is also provided between the front lower longitudinal beam 1, the front pillar 2 and the front lower cross beam 3 for fixing. The front connecting plate 5 strengthens the connection between the front lower longitudinal beam 1, the front pillar 2 and the front lower cross beam 3. Here, the connection between the front lower longitudinal beam 1, the front pillar 2 and the front lower cross beam 3 is a straight tube-shaped extension part, which is convenient for fitting connection.

[0023] The connecting plate includes a bottom plate 41 and a rear connecting plate 4 formed by bending the rear end of the bottom plate 41 upward and extending vertically upward. The lower end of the front lower longitudinal beam 1 is fixed on the bottom plate 41. The rear connecting plate 4 is trapezoidal to reduce space occupation. The bottom plate 41 extends to the lower side of the front lower cross beam 3, and the front lower cross beam 3 is fixed on the bottom plate 41. The connection firmness between the bottom plate 41 and the front lower cross beam 3 is increased.

[0024] The front connecting plate 5 is fixed between the front lower longitudinal beam 1 and the front lower cross beam 3, and the front connecting plate 5 extends to the front end surface of the front pillar 2 and is fixed, which increases the bottom fixing area. The front connecting plate 5 is trapezoidal, which reduces the space occupied. The front lower longitudinal beam 1 and the rear connecting plate 4 are fixedly connected to increase the fixing area. The front pillar 2 is fixedly connected to the rear connecting plate 4 to increase the fixing area.

[0025] The front lower longitudinal beam 1, the front pillar 2, the front lower cross beam 3, the rear connecting plate 4, the bottom plate 41 and the end surfaces of the front connecting plate 5 are all welded, which is stronger than the bolt connection. The welding connection is carbon dioxide shielded welding 6.

[0026] Working principle: The "L"-shaped connecting plate fixes the front lower longitudinal beam 1 and the front pillar 2 not only from the bottom but also from the rear side. At the same time, the bottom of the connecting plate extends to fix the front lower cross beam 3. The front lower cross beam 3 is also connected to the front lower longitudinal beam 1 through the front connecting plate 5, achieving multi-faceted fixation and improving stability and rigidity. The front connecting plate 5 extends upward and is fixed to the front pillar 2, increasing the fixing area and improving stability and rigidity.

[0027] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. The front end frame joint structure of the body in white includes an "L" shaped connecting plate, characterized in that: The connecting plate has a front lower longitudinal beam (1), a front upright column (2) fixed to the upper side of the front lower longitudinal beam (1), and a front lower cross beam (3) arranged on one side of the front lower longitudinal beam (1) fixed to the inner bottom of the connecting plate, and also includes a front connecting plate (5) arranged between the front lower longitudinal beam (1), the front upright column (2) and the front lower cross beam (3) for fixing; The connecting plate comprises a bottom plate (41) and a rear connecting plate (4) extending vertically upward formed by bending the rear end of the bottom plate (41) upward, and the lower end of the front lower longitudinal beam (1) is fixed on the bottom plate (41); The bottom plate (41) extends to the lower side of the front lower cross beam (3), and the front lower cross beam (3) is fixed on the bottom plate (41); The front connecting plate (5) is fixed between the front lower longitudinal beam (1) and the front lower cross beam (3), and the front connecting plate (5) extends to the front end surface of the front pillar (2) and is fixed; The front lower longitudinal beam (1) and the rear connecting plate (4) are fixedly connected; The front upright post (2) is fixedly connected to the rear connecting plate (4); The front lower longitudinal beam (1), the front pillar (2), the front lower cross beam (3), the rear connecting plate (4), the bottom plate (41) and the contacting end surfaces of the front connecting plate (5) are all welded and connected; The "L"-shaped connecting plate fixes the front lower longitudinal beam and the front pillar not only from the bottom but also from the rear. At the same time, the bottom of the connecting plate extends to fix the front lower cross beam. The front lower cross beam is also connected to the front lower longitudinal beam through the front connecting plate, achieving multi-faceted fixation and improving stability and rigidity. The rear connecting plate (4) is in a trapezoidal shape, and the front connecting plate (5) is in a trapezoidal shape.

2. The front end frame joint structure of the body-in-white according to claim 1, characterized in that: The welding connection is carbon dioxide shielded welding (6).

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