CN102700625A - Well-shaped integrated floor beam for passenger vehicle - Google Patents

Abstract

The well-shaped one-piece floor beam for passenger cars provides a one-piece floor beam structure that can improve the crashworthiness of passenger cars in side collisions, with a small number of parts and a simple assembly process. Together they form a ring-shaped closed cavity section structure. The invention is simple in structure, safe and convenient. Through the well-shaped arrangement of floor beams and longitudinal beams, on the one hand, it can evenly transmit the side impact force, improve the crashworthiness of the vehicle body, and better ensure the safety space of the passenger compartment. The well-shaped arrangement can improve the bending stiffness and torsional stiffness of the vehicle body, and ensure the comfort of the occupants. At the same time, making the well-shaped floor beams into one can reduce the processing procedures and facilitate the assembly of other components.

Description

Tic-shaped integrated floor beams for passenger cars

technical field

The invention relates to a body structure component of a passenger car, in particular to an integrated floor beam structure capable of improving the crashworthiness of the side collision of the passenger car, with a small number of parts and a simple assembly process.

Background technique

In my country, since urban road traffic intersections are mainly in the form of plane intersections, the probability of side collision accidents is the highest, and the injury rate ranks first, while the fatality rate is second only to frontal collisions. The side of the car is the weakest part of the car body, and there are few energy-absorbing structural parts and deformable spaces, which seriously threaten the safety of the occupants. At present, most passenger cars adopt load-bearing body, but the torsional rigidity and crashworthiness of the body are relatively low. In response to this situation, most automobile manufacturers now use complex-shaped beams at the front seats, and install reinforcements or use thicker steel plates, which will inevitably lead to complicated processes and increased production costs, which is not conducive to production. , and too complex structure will also lead to difficulties in seat installation, and bulky parts will also lead to increased weight of the vehicle body and use costs. In addition, excessive welding of sheet metal parts will easily cause stress concentration and affect the crashworthiness of the vehicle body.

Contents of the invention

The technical problem to be solved by the present invention is to provide a cross-shaped integrated floor beam for passenger cars to solve the above-mentioned shortcomings in the background technology.

The technical problem solved by the present invention adopts following technical scheme to realize:

The well-shaped integrated floor beam of a passenger car is formed by tailor-welding of two upper and lower steel plates, which together form a ring-shaped and airtight cavity section structure. The floor beam includes two beams and two longitudinal beams, which are The well-shaped arrangement divides the floor into six symmetrical parts, and the floor and floor beams are connected together by welding.

The space formed between the two longitudinal beams is provided with a middle channel, and the middle channel is lapped on the floor longitudinal beam through flanges; the longitudinal beam is divided into three sections, front, middle and back by the cross beam, and the shape of the three sections is required according to the load and layout Dimensions are not the same, the front section has a larger cross-sectional area and the rear section has a smaller cross-sectional area.

The two beams of the floor beam are located in the weak area of the side impact of the vehicle body, which improves the crashworthiness of the side impact of the vehicle body.

The front ends of the middle sections of the two longitudinal beams of the floor beam are fixedly connected to the rear ends of the front sections of the longitudinal beams, the rear ends of the middle sections of the longitudinal beams are fixedly connected to the front ends of the rear sections of the longitudinal beams, and the rear sections of the rear sections of the longitudinal beams are connected to the rear sections of the longitudinal beams. The rear seat beams are fixedly connected together.

Beneficial effects: the present invention is simple in structure, safe and convenient. Through the well-shaped layout of the floor beams and longitudinal beams, on the one hand, it can evenly transmit the side impact force, improve the crashworthiness of the vehicle body, and better ensure the safety space of the passenger compartment. On the other hand, the well-shaped layout can improve the bending stiffness and torsional stiffness of the car body, and ensure the comfort of the passengers. At the same time, making the well-shaped floor beams into one can reduce the processing procedures and facilitate the assembly of other components.

Description of drawings

Fig. 1 is the structural representation of preferred embodiment of the present invention.

Fig. 2 is an overall structural diagram of a preferred embodiment of the present invention.

In the figure: middle aisle 2, well-shaped floor beam 3, left side sill 4, right side sill 6, floor 7, rear seat crossbeam 8.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

See Figures 1 and 2 for a passenger car with a well-shaped integrated floor beam, which is formed by tailor-welding two upper and lower steel plates, which together form a ring-shaped and airtight cavity cross-section structure. The floor generally includes a middle channel 2, a well-shaped floor beam 3, a left side sill 4, a right side sill 6, a floor 7 and a rear seat crossbeam 8.

Among them, the middle channel 2 is located in the middle of the well-shaped floor beam 3, which is consistent with the change of the direction of the floor longitudinal beam. . The floor well-shaped beam 3 two sections of crossbeams are respectively connected with the left side around the threshold 4 and the right side around the threshold 6, and are fixed together by welding. The rear ends of the two floor longitudinal beams of the well-shaped floor beam 3 are connected with the rear seat crossbeam 8, which increases the rigidity of the rear floor.

The well-shaped floor beams 3 divide the floor 7 into six pieces, and the floors are symmetrically arranged and welded on the well-shaped floor beams. The above components together form the bottom structure of the passenger compartment.

The well-shaped integrated floor beam adopts a ring-shaped closed cavity cross-sectional structure, which reduces the weight of the structure and improves the force transmission path. In a side collision, the floor structure of the passenger compartment plays a supporting role for the side wall structure. The well-shaped integrated floor beam not only improves the rigidity of the vehicle body during a side collision, but also is less prone to bending instability when subjected to axial loads, improving the impact of the vehicle body. Anti-deformation ability to ensure the living space of the occupants. In addition, the structural section is simple, and the thickness of the thin-walled parts is consistent, which is easy to realize.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. manned vehicle groined type plate-girder integrally; It is characterized in that, be formed by connecting, lump together the cavity cross-section structure that forms annular closed two block plates welding up and down; Said floor bearer comprises two crossbeams and two longerons; Be groined type and arrange, the floor is divided into symmetrical six, between floor and the floor bearer through being welded together.

2. manned vehicle groined type according to claim 1 is plate-girder integrally, it is characterized in that, said both sides crossbeam connects respectively that threshold is enclosed in car body left side and threshold is enclosed on the right side.

3. manned vehicle groined type according to claim 1 is plate-girder integrally; It is characterized in that; Said longeron by crossbeam be divided into before in back three sections; The center section part sub-headend of longeron is captiveed joint with the rear end of longitudinal beam front section, captives joint with the front end of longeron back segment in the part rear end, stage casing of longeron, and the back segment and the back seat crossbeam of the back segment part of longeron are fixed together.

4. manned vehicle groined type according to claim 1 is plate-girder integrally, it is characterized in that, the space that forms in the middle of said two longerons is provided with middle passage, and middle passage overlaps on longitudinal floor beam through flange.

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