CN215944684U

CN215944684U - Novel vehicle bottom No. four beam metal plate slicing connection structure

Info

Publication number: CN215944684U
Application number: CN202122513213.2U
Authority: CN
Inventors: 袁兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-03-04
Anticipated expiration: 2031-10-19

Abstract

The utility model provides a novel vehicle bottom four-beam sheet metal slicing and connecting structure which comprises a four-beam body, wherein the four-beam body is arranged at the lower end of a rear seat part, two sides of the front end of the rear seat part are connected with a threshold part, the four-beam body is divided into a four-beam upper sheet structure and a four-beam lower sheet structure, the four-beam upper sheet structure and the four-beam lower sheet structure are welded through spot welding, the four-beam upper sheet structure is U-shaped, a protruding part of the four-beam upper sheet structure is connected with a waterfall plate through spot welding, one end, close to the waterfall plate, of the four-beam lower sheet structure is provided with angle steel, and the four-beam lower sheet structure and the threshold inner plate are lapped on two welding surfaces in the Y direction and the Z direction. The four-beam is reasonably designed in a split manner, so that the four-beam can be effectively connected with the doorsill, the rigidity requirement of side collision is met, the thickness of a metal plate can be reduced in an area with lower strength requirement, the material grade is reduced, and the requirement of light weight of the whole vehicle is met.

Description

Novel vehicle bottom No. four beam metal plate slicing connection structure

Technical Field

The utility model belongs to the technical field of a sheet metal slicing connecting structure for a fourth beam of a vehicle bottom, and particularly relates to a novel sheet metal slicing connecting structure for the fourth beam of the vehicle bottom.

Background

In the design of electric vehicles, protecting battery modules from being invaded is the most concerned problem of each large whole factory. Along with the continuous improvement of battery package charge capacity requirement, the battery package volume is bigger and bigger, and the battery package can be covered whole automobile body floor below usually, extends to the rear end along threshold board from whole car front end all the way, two rows of seat below positions promptly.

In order to protect the battery pack, a plurality of Y-direction reinforcing cross beams with high strength are respectively arranged on the floor of the vehicle body from front to back. During the side collision of the whole vehicle, the cross beams can resist external load and prevent the vehicle body from deforming, so that the intrusion amount of the battery pack is reduced. The fourth beam of the floor is the last supporting beam penetrating through the whole floor in the X direction of the vehicle body, so that the function of the fourth beam is very important. Meanwhile, the fourth beam is positioned at the front lower part of the second row of seats, and can structurally play a role in supporting the framework of the second row of seats.

In order to meet the requirement of column collision, a conventional design scheme is shown in figures 1 and 2, and a No. four beam at the bottom of a vehicle and a waterfall plate form a cavity with basically the same section from left to right. The fourth beam is made of high-grade sheet metal, such as DP800 material, and is formed by using an integral forming technology with high material thickness, such as 1.3 mm. For an electric vehicle with a high floor, in order to support a seat framework and meet the requirement of preventing the seat from sinking, a beam IV needs to be made very high, about 240mm from top to bottom, and most of the beam IV is higher than doorsills on two sides. In the pillar collision working condition, only the part basically equivalent to the height of the threshold is positioned in the effective force transmission path, and the part higher than the threshold is not positioned on the effective force transmission path.

Therefore, for high-floor electric vehicles, the integrated No. four beam scheme has the defects that the defects of metal plate cracking, wrinkling and the like are extremely difficult to solve due to the problems of high material grade, complex shape, easy forming difficulty and the like in the forming process; as can be seen from the connection structure 1 of the waterfall plate 7 and the fourth beam in fig. 2, the section of the fourth beam is single in form, and the feasibility of adding a reinforced complex section between the waterfall plate and the fourth beam is also limited by the integral forming of large-area complex metal plates; and the material thickness is too big, and the panel beating is heavy, and waste is serious, is not lean design, does not accord with the lightweight design theory.

Consequently, provide a novel No. four No. beams panel beating burst connection structure of vehicle bottom, carry out reasonable burst design with No. four beams, can keep the effective connection with the threshold, satisfy the rigidity requirement of side collision, again can be in the lower region of intensity requirement, attenuate panel beating thickness, reduce the material grade, realize the needs that whole car weight is light in weight.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a novel vehicle bottom four-beam metal plate slicing and connecting structure which comprises a four-beam body, wherein the four-beam body is arranged at the lower end of a rear seat part, two sides of the front end of the rear seat part are connected with a threshold part, the four-beam body is divided into a four-beam upper sheet structure and a four-beam lower sheet structure, the four-beam upper sheet structure and the four-beam lower sheet structure are formed by spot welding, the four-beam upper sheet structure is U-shaped, a protruding part of the four-beam upper sheet structure is connected with a waterfall plate by spot welding, one end, close to the waterfall plate, of the four-beam lower sheet structure is provided with angle steel, and the four-beam lower sheet structure and the threshold inner plate are lapped on two welding surfaces in the Y direction and the Z direction.

Preferably, the sheet-on-beam structure of the fourth number selects a CR590T plate, and the thickness of the plate is 0.8 mm.

Preferably, the lower sheet type structure of the fourth beam is a CR780 plate, and the thickness of the plate is 1.3 mm.

Preferably, the angle steel and the lower sheet type structure of the fourth beam form a square cavity structure penetrating from left to right.

Preferably, the height of the fourth beam lower sheet type structure is equivalent to that of the inner plate of the threshold.

Compared with the prior art, the utility model has the beneficial effects that:

1. the fourth beam is divided into a fourth beam upper sheet type structure and a fourth beam lower sheet type structure, and after the sheet separation design is carried out, the material thickness and the material performance can be flexibly adjusted according to the column collision result.

2. According to the utility model, the convex part of the four-beam upper plate type structure is welded with the waterfall plate, so that the load resisting capacity on a force transmission path can be further improved, and a gap is reserved between the concave part of the four-beam upper plate type structure and the waterfall plate, so that the electrophoretic fluid in a paint workshop and accumulated water when a user uses the paint workshop can flow out.

3. The angle steel and the lower sheet type structure of the fourth beam form a square cavity structure penetrating from left to right, and the structure can improve the integral moment of inertia, so that the strength and the stability of the fourth beam are improved.

Drawings

FIG. 1 is a schematic view of a conventional electric vehicle high floor No. four beam;

FIG. 2 is a schematic view of a connection between a No. four beam and a waterfall board of a conventional electric vehicle;

FIG. 3 is a schematic diagram of the position of the fourth beam;

FIG. 4 is a schematic structural view of the fourth beam body of the present invention;

FIG. 5 is a cross-sectional view taken at A of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic view of a joint structure for joining an inner panel of a rocker according to the present invention;

FIG. 7 is a cross-sectional view at B of FIG. 6 of the present invention;

FIG. 8 is a schematic view of a structure of a waterfall board and an angle steel joint according to the present invention;

fig. 9 is a cross-sectional view at C of fig. 8 of the present invention.

In the figure:

1. a fourth beam body; 2. a threshold portion; 3. a rear seat portion; 4. a fourth beam upper plate structure; 5. a fourth beam lower piece type structure; 6. a threshold inner plate; 7. a waterfall board; 8. and (5) angle steel.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

example (b):

as shown in the attached figures 3-9, the utility model provides a novel vehicle bottom fourth beam sheet metal slicing and connecting structure, which comprises a fourth beam body 1, wherein the fourth beam body 1 is arranged at the lower end of a rear seat part 3, two sides of the front end of the rear seat part 3 are connected with a threshold part 2, the fourth beam body 1 is divided into a fourth beam upper sheet structure 4 and a fourth beam lower sheet structure 5, the fourth beam upper sheet structure 4 and the fourth beam lower sheet structure 5 are welded through spot welding, the fourth beam upper sheet structure 4 is U-shaped, a convex part of the fourth beam upper sheet structure 4 is connected with a waterfall plate 7 through spot welding, the load resisting capacity on a force transmission path can be further improved, a gap is reserved between the concave part of the fourth beam upper sheet structure and the waterfall plate, the outflow of paint electrophoretic fluid and accumulated water when a user uses is facilitated, one end of the fourth beam lower sheet structure 5, which is close to the angle steel 7, is provided with an angle steel 8, the four-beam lower sheet type structure 5 is in lap joint with the threshold inner plate 6 on two welding surfaces in the Y direction and the Z direction.

Specifically, No. four roof beam upper segment structure 4 chooses CR590T panel for use, and its thickness is 0.8mm, No. four roof beam lower segment structure 5 chooses CR780 panel for use, and its thickness is 1.3 mm.

Specifically, the angle steel 8 and the four-beam lower sheet type structure 5 form a square cavity structure penetrating from left to right, and the structure can improve the integral moment of inertia, so that the strength and the stability of the four-beam are improved.

Specifically, the No. four beam body 1 penetrates through the whole vehicle bottom in the Y direction on the whole vehicle arrangement, only the No. four beam lower sheet type structure 5 and the threshold inner plate 6 are in lap joint on two welding surfaces in the Y direction and the Z direction at two ends of the No. four beam body 1, and the No. four beam upper sheet type structure 4 is not in contact with the threshold inner plate 6; in the X direction, the No. four beam upper plate type structure 4 is in a U shape and is connected with the waterfall board 7 in a reinforcing mode, the No. four beam lower plate type structure 5 is overlapped with the lower portion of the waterfall board 7 after passing through the angle steel 8 reinforcing structure and then is laid on the bottom board to form a load impact resistant and torsion resistant area of the reinforcing structure, in the area, after the No. four beam body 1 is disassembled, the No. four beam lower plate type structure 5 is equal to the height of the sill inner board 6, is a main bearing part for bearing stress crushing of the inner board frame and the outer board frame of the sill, and can continuously keep higher material grade and material thickness, and the disassembled No. four beam upper plate type structure 4 can reduce the material and material thickness according to the collision test result on the premise of maintaining the requirement of the high floor, and realizes the optimized design of reducing the manufacturing difficulty and weight.

The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention.

Claims

1. A novel vehicle bottom fourth beam metal plate slicing connection structure is characterized by comprising a fourth beam body (1), the fourth beam body (1) is arranged at the lower end of the rear seat part (3), two sides of the front end of the rear seat part (3) are connected with the threshold part (2), the fourth beam body (1) is divided into a fourth beam upper sheet type structure (4) and a fourth beam lower sheet type structure (5), the four-beam upper plate-type structure (4) and the four-beam lower plate-type structure (5) are welded by spot welding, the four-beam upper sheet structure (4) is U-shaped, the convex part of the four-beam upper sheet structure (4) is connected with the waterfall plate (7) through spot welding, an angle steel (8) is arranged at one end of the fourth beam lower piece type structure (5) close to the waterfall plate (7), the four-beam lower sheet type structure (5) is in lap joint with the sill inner plate (6) on two welding surfaces in the Y direction and the Z direction.

2. The novel underbody four-beam sheet metal slicing connection structure is characterized in that a CR590T sheet is selected as the four-beam upper-sheet structure (4), and the thickness of the plate is 0.8 mm.

3. The novel underbody four-beam sheet metal slicing and connecting structure as claimed in claim 1, wherein the four-beam lower-piece structure (5) is made of a CR780 plate with a thickness of 1.3 mm.

4. The novel underbody four-beam sheet metal slicing connection structure is characterized in that the angle steel (8) and the four-beam lower-sheet structure (5) form a square cavity structure penetrating from left to right.

5. The novel underbody four-beam sheet metal slicing connection structure is characterized in that the height of the four-beam lower-sheet structure (5) is equal to that of the sill inner plate (6).