CN103407499A - Floor reinforcing device applied to inside of vehicle and vehicle body structure - Google Patents

Abstract

The invention relates to a floor reinforcement device applied to the interior of a vehicle, which has: a first reinforcement part and a second reinforcement part arranged above the floor of the vehicle interior along the width direction of the vehicle body; a connecting part connected to the first reinforcement and the second reinforcing portion and disposed under the floor of the vehicle interior. The invention also relates to a vehicle body structure with the floor reinforcing device. By adopting the technical scheme of the invention, while improving the strength of the vehicle floor, the collision force during the side collision process of the vehicle is effectively absorbed and buffered, thereby improving the safety performance of the vehicle.

Description

Floor reinforcements and body structures applied to vehicle interiors

technical field

The invention relates to a structural component applied to a vehicle, in particular to a floor reinforcement device applied to the interior of a vehicle, and at the same time, the invention also relates to a vehicle body structure with the floor reinforcement device.

Background technique

In the main frame structure of the existing vehicle body, it mostly includes a roof beam at the top of the vehicle body and a vehicle body longitudinal beam connected to the roof beam at the side of the vehicle body. The roof and the sheet metal on the side of the body are supported; a space for accommodating the vehicle seat is formed inside the body body. When the existing vehicle seat is installed inside the body body, it mainly has the following forms: one is in the vehicle There is a floor beam on the floor, and the front feet of the seat are installed on the floor beam, and the rear feet are directly arranged on the floor. This structure cannot increase the strength of the body floor as a whole, and the floor where the rear feet are located is easily deformed; The second is to arrange four front and rear anchor mounting brackets on the floor, which also cannot enhance the strength of the floor; the third is to install the front and rear anchors of the seats on two floor beams. For vehicles with insufficient floor space, the layout is not convenient enough, and for vehicles with multiple rows of seats, the crossbeam where the rear feet are located will affect the comfort of the rear passengers. In addition, when a vehicle side collision occurs, the side of the vehicle body is the weakest part of the vehicle structure, and the accident rate and death rate of the axle rollover accident caused by the side collision of the vehicle are the highest, because the strength of the floor is low, and the vehicle seat In the form of setting on the floor, when the vehicle collides sideways, the vehicle floor cannot absorb the collision force well, resulting in deformation of the vehicle floor, and even breaking the floor where the seat is installed, affecting the safety of passengers. In addition, in When the vehicle rolls over, it is easy to cause the main frame of the vehicle body to be crushed to deform the main body of the vehicle body, which will also indirectly cause damage to the occupants.

Contents of the invention

In order to solve the deficiencies in the prior art, the present invention provides a floor reinforcement device applied to the interior of a vehicle, which can better buffer the collision force generated by the side collision of the vehicle while improving the strength of the vehicle floor.

In order to achieve the above object, the floor reinforcement device applied to the vehicle interior of the present invention has:

the first reinforcing part and the second reinforcing part are arranged above the floor of the vehicle interior along the width direction of the vehicle body;

The connection part is connected between the first reinforcement part and the second reinforcement part and is provided under the floor of the vehicle interior.

Through the setting of the above structure, while enhancing the strength of the floor, the collision force generated by the side collision of the vehicle can be transmitted along the first reinforcement part, the second reinforcement part and the connecting part, and then the collision force can be transmitted along the width direction of the vehicle body. to prevent the stress concentration of the collision force from causing deformation or even fracture of the vehicle floor; in addition, since the first reinforcement part and the second reinforcement part are located above the floor, and the connecting part is located below the floor, such a structural setting makes When any one of the first reinforcement part and the second reinforcement part collides sideways, the collision force can change the transmission path of the force during the transmission process, and at the same time, a collapse cavity can be formed between the connection part and the floor, so that the collision force can be When it is transmitted to the connecting part, it can be well absorbed in the collapse cavity, so that the collision force can be effectively buffered, thereby improving the safety of the vehicle.

As a limitation to the above method, the first reinforcement part and the second reinforcement part have the same structure and are composed of two longitudinal beams arranged along the vehicle length direction and a cross beam arranged along the vehicle width direction and connecting the two longitudinal beams H-shaped, the two longitudinal beams of the first reinforcement part and the second reinforcement part are respectively provided with installation parts installed with the vehicle seat; the connecting part and the beam of the first reinforcement part and the second reinforcement part are located on the same longitudinal section of the body. The first reinforcement part and the second reinforcement part are arranged in an H shape, and the installation part is added, so that the vehicle seat can be installed on the first reinforcement part and the second reinforcement part, which facilitates the arrangement of the vehicle seat in the vehicle.

As an improvement to the present invention, the interiors of the crossbeams, longitudinal beams and connecting parts are all hollow. With this structural arrangement, through the hollow structure of each part, the collision force is well absorbed during the transmission process, and the overall safety performance is further improved.

As an improvement to the present invention, reinforcing ribs are provided on the beams, the longitudinal beams and the connecting parts. Through the arrangement of reinforcing ribs, the strength of each part is effectively enhanced.

In addition, the present invention also provides a vehicle body structure, which includes a roof cross member on the top of the vehicle body, a vehicle body side member connected to the roof cross member on the side of the vehicle body, and the above-mentioned floor reinforcement device applied to the interior of the vehicle, The first reinforcement part, the connection part, the second reinforcement part, the roof beam and the longitudinal beam of the vehicle body are located on the same longitudinal section of the vehicle body. With this structure, the first reinforcement part, the connection part, the second reinforcement part, the roof beam and the side beam of the vehicle body form a closed ring structure on the longitudinal section of the vehicle body, which can effectively alleviate the huge impact force generated during the collision and increase the Rigidity of the passenger compartment when the vehicle rolls over improves safety in the cab.

To sum up, the technical solution of the present invention can effectively absorb and buffer the collision force during the side collision of the vehicle while improving the strength of the vehicle floor, thereby improving the safety performance of the vehicle.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

FIG. 1 is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of the overall structure of Embodiment 2 of the present invention.

In the figure: 1, the first reinforcement part; 11, the first longitudinal beam; 12, the second longitudinal beam; 2, the second reinforcement part; 21, the third longitudinal beam; 22, the fourth longitudinal beam; 3, the first beam ; 4, the second beam; 5, the connecting beam; 6, the connection section; 7, the installation part; 8, the longitudinal rib;

Detailed ways

Embodiment one

This embodiment relates to a floor reinforcement device applied to the interior of a vehicle, comprising a first reinforcement part 1 and a second reinforcement part 2 arranged above the floor of the vehicle interior along the width direction of the vehicle body; A connecting portion between the second reinforcing portions 2 and provided under the floor of the vehicle interior.

In this embodiment, in order to cooperate with the installation of the car seat, the second reinforcement part 2 has the same structure as the first reinforcement part 1, and is composed of two longitudinal beams and a cross beam connecting the two longitudinal beams respectively. For ease of description, as shown in FIG. 1 , the first reinforcement 1 includes a first longitudinal beam 11 and a second longitudinal beam 12 arranged along the vehicle length direction, and a first longitudinal beam 11 and a second longitudinal beam arranged along the vehicle width direction and connecting the first longitudinal beam 11 and the second longitudinal beam. The first beam 3 of the longitudinal beam 12 forms an H shape. Similarly, the second reinforcement part 2 is composed of the third longitudinal beam 21 and the fourth longitudinal beam 22 arranged along the vehicle length direction and the second cross beam arranged along the vehicle width direction and connecting the third longitudinal beam 21 and the fourth longitudinal beam 22 4.

The interior of the first longitudinal beam 11, the second longitudinal beam 12, the third longitudinal beam 21, and the fourth longitudinal beam 22 are all hollowly arranged, and reinforcing ribs are all provided on each longitudinal beam, as shown in Figure 1, on each longitudinal beam The reinforcing ribs include transverse reinforcing ribs 9 arranged along the width direction of the vehicle body and longitudinal reinforcing ribs 8 perpendicularly intersecting with the transverse reinforcing ribs 9 .

In addition, the first longitudinal beam 11, the second longitudinal beam 12, the third longitudinal beam 21, and the fourth longitudinal beam 22 are respectively provided with vehicle seat feet not shown in the figure to be connected to the vehicle seat. The mounting part 7 installed, the mounting part 7 can be parts such as mounting holes or mounting grooves, the position of the mounting part 7 has certain flexibility, can be set according to the position of seat anchor.

The middle part of the first longitudinal beam 11 and the second longitudinal beam 12 is fixedly connected with the first transverse beam 3 along the width direction of the vehicle by welding, and the interior is hollow. Lateral ribs 9. Similarly, transverse reinforcement ribs 9 are also provided on the second beam 4 .

A connecting portion located below the floor is connected between the second longitudinal beam 12 and the fourth longitudinal beam 22 . The main body of the connecting part in this embodiment is the connecting beam 5 , which is flat and hollow inside. Both ends of the connecting beam 5 are fixedly connected to the second longitudinal beam 12 and the fourth longitudinal beam 22 through the connecting section 6 inclined upward at a certain angle. The upper surface of the connecting beam 5 can be fitted to the lower surface of the floor not shown in the figure, or there can be a certain gap between the lower surface of the floor, so that the size of the cavity formed by the connecting beam 5 and the floor can be adjusted.

When an automobile is subjected to a side collision, it is assumed that an impact is received from a portion of the first reinforcement portion 1 on the left side as shown in FIG. 1 . The first longitudinal beam 11 is first impacted, and part of the impact force is alleviated and transmitted. The collision energy is transmitted along the width direction of the vehicle body, and then the force is transmitted to the second longitudinal beam 12 through the middle force transmission channel, that is, the first beam 3, and then passes through as a side collision. The connecting crossbeam 5 in the central area of the force transmission channel is transmitted to the second reinforcement part 2 on the right side, so that the force transmission is uninterrupted and effectively absorbs energy. In addition, when the collision energy is transmitted to the connecting beam 5, since the axis of the connecting beam 5 is not in a straight line with the axis of the first beam 3 and the second beam 4, the collision force will generate a downward component force at this time, thereby buffering The impact of the collision force on the floor; and the connecting beam 5 is arranged under the floor to form an effective energy-absorbing cavity with the floor. When the energy of the collision force is too large for the connecting beam 5 to bear and transmit, the floor breaks and sags downward. The crumple part is formed, so that the collision energy can be buffered again, and the damage to the personnel caused by the upward protrusion when the floor is damaged is avoided, so as to protect the safety of the passenger compartment.

Embodiment two

This embodiment relates to a vehicle body structure, including a roof beam 13 at the top of the vehicle body, and two vehicle body longitudinal beams 10 connected to the roof beam 13 at the side of the vehicle body. Floor reinforcements for vehicle interiors.

As shown in Figure 2, in this embodiment, the first reinforcement part 1, the connection part, the second reinforcement part 2, the roof beam 13 and the vehicle body longitudinal beam 10 are located on the same vehicle body longitudinal section, specifically , the first crossbeam 3, the connecting crossbeam 5, the second crossbeam 4, and the closed ring structure formed by the two vehicle body longitudinal beams 10 and the roof crossbeam 13 respectively connected with the first longitudinal beam 11 and the third longitudinal beam 21, the first The first side beam 11 and the third side beam 21 can be connected to the vehicle body side beam 10 directly, or connected to the vehicle body side beam 10 through a sill beam.

When the vehicle body rolls over due to side collision force, assuming that the force is borne by the direction of the first reinforcement part 1 on the left as shown in Figure 1, the collision force is transmitted along the width direction of the vehicle body, the first longitudinal beam 11 is first impacted, and then The force is transmitted from the first longitudinal beam 11 to the second longitudinal beam 12 through the first cross beam 3 , then to the second reinforcement part 2 through the connecting cross beam 5 , and finally to the vehicle body longitudinal beam 10 and the roof through the third longitudinal beam 21 beam13. When the car body rolls over, the load-bearing part is mainly composed of the first beam 3, the connecting beam 5, the second beam 4, and the two body longitudinal beams 10 and 10 connected with the first longitudinal beam 11 and the third longitudinal beam 21 on both sides The closed ring structure formed by the roof beam 13. The load-bearing part is in the same longitudinal section of the vehicle body, and the design of the internal cavity structure maximizes the space of the passenger compartment when the vehicle body rolls over, ensuring the safety of the cab. .

Claims (6)

1. A floor reinforcement device applied to the interior of a vehicle, characterized in that it has: the first reinforcing part and the second reinforcing part are arranged above the floor of the vehicle interior along the width direction of the vehicle body; The connection part is connected between the first reinforcement part and the second reinforcement part and is provided under the floor of the vehicle interior. 2. The floor reinforcement device applied to the interior of a vehicle according to claim 1, characterized in that: the first reinforcement part and the second reinforcement part have the same structure and are composed of two longitudinal reinforcements arranged along the length direction of the vehicle. H-shaped beams and beams arranged along the width direction of the vehicle and connected to two longitudinal beams, the two longitudinal beams of the first reinforcement part and the second reinforcement part are respectively provided with installation parts installed with vehicle seats; The connecting portion and the beams of the first reinforcing portion and the second reinforcing portion are located on the same longitudinal section of the vehicle body. 3 . The floor reinforcement device applied to vehicle interiors according to claim 2 , wherein the cross beams, longitudinal beams and connecting parts are all hollow inside. 4 . 4 . The floor reinforcement device applied to vehicle interiors according to claim 2 , wherein reinforcing ribs are provided on the beams, the longitudinal beams and the connecting parts. 5. A vehicle body structure, comprising a roof beam at the top of the vehicle body, and two vehicle body longitudinal beams connected to the roof beam at the side of the vehicle body, characterized in that: on the interior floor of the vehicle, there is a Any one of the floor reinforcement devices applied to the interior of a vehicle. 6 . The vehicle body structure according to claim 5 , wherein the first reinforcement part, the connection part, the second reinforcement part, the roof beam and the vehicle body longitudinal beam are located on the same longitudinal section of the vehicle body.

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