A front floor assembly collision structure

Abstract

The present invention relates to a collision structure of a front floor assembly, belonging to the technical field of automotive design and manufacturing. The collision structure of the front floor assembly of the present invention includes a front section of the middle channel and a rear section of the middle channel. The two sides of the rear section of the middle channel are welded to the front floor. The outer side of the front floor is fixedly connected to the sill side beam assembly. The seat front cross beam and the seat rear cross beam penetrate the rear section of the middle channel in the Y direction and are connected to the front floor. The two ends of the seat front cross beam and the seat rear cross beam are connected to the sill side beam assembly. The rear part of the front section of the middle channel overlaps on the front part of the rear section of the middle channel, and the rear part of the front section of the middle channel is welded to the two sides of the rear section of the middle channel. The front section of the middle channel is welded to the front floor on both sides. A welding edge is provided at the rear end of the front section of the middle channel. The welding edge overlaps on the seat rear cross beam and is welded to the upper surface of the seat rear cross beam. The collision structure of the front floor assembly of the present invention can effectively improve the smoothness of side collision and frontal collision load transfer, optimize the collision structure, and achieve lightweighting.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts, and more specifically, the present invention relates to a front floor assembly collision structure. Background Art

[0002] As Figures 1-3 shown, the front floor assembly collision structure in the prior art is composed of a front seat cross member 1, a rear seat cross member 2, a sill side beam assembly 3, a center tunnel 4, a center tunnel reinforcement plate 6, a connecting plate 5 and a front floor 7. Among them, the front seat cross member 1 and the rear seat cross member 2 are divided into left and right parts, the outer sides are connected to the sill side beam assembly 3, and the inner sides are connected to the center tunnel 4. A Y-direction cross beam connecting plate 5 is designed at the lower part of the center tunnel corresponding to the side collision to support the left and right parts of the seat cross members 1 and 2. The number of parts is large, the welding process is complex, the lightweight effect is poor, and the load transfer corresponding to the side collision is not smooth; in addition, the center tunnel runs through in the X direction, and a center tunnel reinforcement plate 6 is added locally at the front part corresponding to the collision safety, and the lightweight effect is relatively poor. In view of this problem, the front floor assembly structure is improved and designed. Summary of the Invention

[0003] In order to solve the above technical problems existing in the prior art, the purpose of the present invention is to provide a front floor assembly collision structure.

[0004] The front floor assembly collision structure of the present invention includes a front seat cross member, a rear seat cross member, a front section of the center tunnel and a rear section of the center tunnel. The two sides of the rear section of the center tunnel are welded to the front floor, and the outer side of the front floor is welded and fixed to the sill side beam assembly. It is characterized in that: the Y direction of the front seat cross member and the rear seat cross member penetrates through the rear section of the center tunnel and is connected to the front floor, and the two ends of the front seat cross member and the rear seat cross member are connected to the sill side beam assembly; the rear part of the front section of the center tunnel overlaps on the front part of the rear section of the center tunnel, the rear part of the front section of the center tunnel is welded to both sides of the rear section of the center tunnel, and the front section of the center tunnel is welded to the front floor on both sides; a welding edge is provided at the rear end of the front section of the center tunnel, and the welding edge overlaps on the rear seat cross member and is welded to the upper surface of the rear seat cross member.

[0005] Among them, it further includes a center tunnel end plate, and the center tunnel end plate is arranged between the front section of the center tunnel and the rear section of the center tunnel.

[0006] Among them, the lower end of the center tunnel end plate is welded to the upper surface of the rear section of the center tunnel, the upper end of the center tunnel end plate is welded to the lower surface of the front section of the center tunnel, and the rear side of the center tunnel end plate is welded to the front side of the front seat cross member.

[0007] Among them, there is a gap between the front section and the rear section of the middle channel; and preferably, the gap between the front section and the rear section of the middle channel gradually decreases from the front of the vehicle to the rear of the vehicle.

[0008] Among them, the rear section of the middle channel has a constant cross-sectional structure.

[0009] Among them, the front seat crossbeam and the rear seat crossbeam are welded and fixed to the front floor.

[0010] Among them, the front seat crossbeam and the rear seat crossbeam are welded to the upper surface and both sides of the rear section of the middle channel.

[0011] Among them, both ends of the front seat crossbeam and the rear seat crossbeam are welded and fixed to the sill side beam assembly.

[0012] Among them, side holes for avoiding the front seat crossbeam are provided on both sides of the front section of the middle channel.

[0013] Compared with the prior art, the front floor assembly collision structure of the present invention has the following beneficial effects:

[0014] 1) It can effectively improve the smoothness of side collision and front collision load transfer;

[0015] 2) Part optimization, simplified welding process, and cost savings in manufacturing;

[0016] 3) Achieve a flat floor state in the foot space of the second row of the human body while satisfying the passing performance of the middle channel pipelines;

[0017] 4) Structural optimization achieves a weight reduction of about 1.5 kg. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the column collision structure of the floor assembly in the prior art.

[0019] Figure 2 is an exploded schematic diagram of the column collision structure of the floor assembly in the prior art.

[0020] Figure 3 is Figure 1 a schematic diagram of the cross-sectional structure along the A-A direction.

[0021] Figure 4 is a schematic diagram of the column collision structure of the floor assembly of the present invention.

[0022] Figure 5 is an exploded schematic diagram of the column collision structure of the floor assembly of the present invention.

[0023] Figure 6 is Figure 4 a schematic diagram of the cross-sectional structure along the B-B direction.

[0024] Figure 7 For Figure 4 Schematic cross-sectional structure diagram along the C-C direction. Specific implementation manners

[0025] The following will further elaborate on the front floor assembly collision structure of the present invention in combination with specific embodiments to help those skilled in the art have a more complete, accurate and in-depth understanding of the technical solution of the present invention.

[0026] Embodiment 1

[0027] As Figures 4-7 shown, the front floor assembly collision structure of this embodiment includes the front section 40 of the middle channel, the end plate 60 of the middle channel and the rear section 50 of the middle channel. The two sides of the rear section 50 of the middle channel are fixedly welded to the front floor 70, and the outer side of the front floor 70 is fixedly welded to the sill side beam assembly 30. The front seat cross member 10 and the rear seat cross member 20 penetrate through the rear section 50 of the middle channel in the Y direction and are welded to the front floor 70, and the front seat cross member 10 and the rear seat cross member 20 are welded to the upper surface and both sides of the rear section 50 of the middle channel, and the two ends of the front seat cross member 10 and the rear seat cross member 20 are welded to the sill side beam assembly 30. The rear part of the front section 40 of the middle channel overlaps on the front part of the rear section 50 of the middle channel, and the rear part of the front section 40 of the middle channel is welded to both sides of the rear section 50 of the middle channel, and the front section 40 of the middle channel is welded to the front floor 70 on both sides. Side holes for avoiding the front seat cross member 10 are provided on both sides of the front section 40 of the middle channel. A welding edge is provided at the rear end of the front section 40 of the middle channel, and the welding edge overlaps on the rear seat cross member 20 and is welded to the upper surface of the rear seat cross member 20. The end plate 60 of the middle channel is arranged between the front section 40 of the middle channel and the rear section 50 of the middle channel, and the lower end of the end plate 60 of the middle channel is welded to the upper surface of the rear section 50 of the middle channel, the upper end of the end plate 60 of the middle channel is welded to the lower surface of the front section 40 of the middle channel, and the rear side of the end plate 60 of the middle channel is welded to the front side of the front seat cross member 10.

[0028] In this embodiment, the front seat crossbeams 10 and 20 are Y-directionally through, and both ends are connected to the sill side beam assembly 30, which improves the smoothness of side collision load transfer, reduces the number of parts, simplifies the welding process, and saves manufacturing costs. The middle channel is designed in the front and rear sections. The front section 40 of the middle channel overlaps on the front seat crossbeams 10 and 20, ensuring the through of the crossbeams. Moreover, there is a gap between the front section and the rear section of the middle channel; and the gap between the front section and the rear section of the middle channel gradually decreases from the front of the vehicle to the rear of the vehicle, which improves the smoothness of frontal collision load transfer, so that structural optimization can be achieved. Under the same specifications and dimensions, using the same structural steel material, the weight can be reduced by about 1.5 kg. The rear section 50 of the middle channel is of constant cross-section design, with a height of about 25 mm, ensuring that the foot space in the second row is in a flat floor state. The front section 40 and the rear section 50 of the middle channel overlap between the front seat crossbeams 10 and 20, and a middle channel end plate 60 is designed at the front, further improving the structural connection strength.

[0029] For those of ordinary skill in the art, the specific embodiments are only exemplary descriptions of the present invention. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention, they are within the protection scope of the present invention.

Claims

1. A collision structure of a front floor assembly, comprising a front seat cross member, a rear seat cross member, a front section of a middle channel and a rear section of the middle channel. The two sides of the rear section of the middle channel are welded to the front floor, and the outer side of the front floor is welded and fixed to a sill side beam assembly, characterized in that: The Y direction of the front seat crossbeam and the rear seat crossbeam penetrates through the rear section of the middle channel and is connected to the front floor. Both ends of the front seat crossbeam and the rear seat crossbeam are connected to the sill side beam assembly; the rear part of the front section of the middle channel overlaps on the front part of the rear section of the middle channel, and the rear part of the front section of the middle channel is welded to both sides of the rear section of the middle channel. The front section of the middle channel is welded to the front floor on both sides; a welding edge is provided at the rear end of the front section of the middle channel, and the welding edge overlaps on the rear seat crossbeam and is welded to the upper surface of the rear seat crossbeam; a middle channel end plate is further included, and the middle channel end plate is arranged between the front section and the rear section of the middle channel; the lower end of the middle channel end plate is welded to the upper surface of the rear section of the middle channel, the upper end of the middle channel end plate is welded to the lower surface of the front section of the middle channel, and the rear side of the middle channel end plate is welded to the front side of the front seat crossbeam; there is a gap between the front section and the rear section of the middle channel; the gap between the front section and the rear section of the middle channel gradually decreases from the head to the tail direction, improving the smoothness of the frontal collision load transfer, so that structural optimization can be achieved. Under the same specifications and dimensions, using the same structural steel material, the weight can be reduced by about 1.5 kg.

2. The front floor assembly collision structure according to claim 1, characterized in that: The rear section of the middle channel is of an equal cross-section structure.

3. The front floor assembly collision structure according to claim 1, wherein: The front seat crossbeam and the rear seat crossbeam are welded and fixed to the front floor.

4. The front floor assembly collision structure according to claim 1, characterized in that: The front seat crossbeam and the rear seat crossbeam are welded to the upper surface and both sides of the rear section of the middle channel.

5. The front floor assembly collision structure according to claim 1, wherein: Both ends of the front seat crossbeam and the rear seat crossbeam are welded and fixed to the sill side beam assembly.

6. The front floor assembly collision structure according to claim 1, characterized in that: Side holes for avoiding the front seat crossbeam are provided on both sides of the front section of the middle channel.

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