Middle cross beam structure of lower vehicle body

Abstract

The utility model provides a lower car body middle cross beam structure which comprises a cross beam upper plate, a cross beam lower plate and a cross beam reinforcer, the cross beam lower plate is connected with the cross beam upper plate, an installation cavity is reserved between the cross beam upper plate and the cross beam lower plate, and the cross beam reinforcer is arranged in the installation cavity in the length direction of the cross beam upper plate and the cross beam lower plate. The cross section of the cross beam reinforcing piece is of an n-shaped structure, the cross beam reinforcing piece is connected with the cross beam upper plate and the cross beam lower plate at the same time, horizontal installation parts are arranged at the ends of the cross beam upper plate respectively, and vertical installation parts are arranged at the ends of the cross beam lower plate respectively. The cross beam upper plate, the cross beam lower plate and the cross beam reinforcer form a high-rigidity structure used for improving the rigidity of the whole cross beam, the bending rigidity of the whole middle cross beam structure is greatly improved, vibration transmitted from the road surface can be restrained, and the deformation resistance and crushing resistance of the side face of a vehicle are higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle equipment field, in particular to a lower car body middle cross beam structure. BACKGROUND

[0002] The automobile lower car body cross beam is an important component of the whole automobile frame, and is divided into front, middle and rear cross beams according to the position of the lower car body cross beam distribution, the middle cross beam is mainly distributed in the cross beam corresponding to the B column lower joint area, the lower car body middle cross beam can ensure that the whole vehicle frame has enough torsional stiffness, provides the whole vehicle stability, and when side collision, he can resist Y deformation, ensure the safety space of the vehicle occupant, especially for new energy vehicles, he can effectively prevent the battery pack from being extruded and self-ignition, and the current lower car body middle cross beam structure, the bending and torsional stiffness of the whole middle cross beam structure is insufficient, cannot effectively inhibit the vibration transmitted from the road surface, and the vehicle side resistance deformation and crushing ability is insufficient, when the vehicle collides with the side, the vehicle space will be invaded to cause casualties, and the battery pack is also easy to be extruded. SUMMARY

[0003] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide a lower car body middle cross beam structure, which is used to solve the technical problems that the vehicle space will be invaded to cause casualties when the vehicle collides with the side, the battery pack is easy to be extruded and self-ignition, and the vibration transmitted from the road surface cannot be effectively inhibited.

[0004] To achieve the above-mentioned purpose and other related purposes, the utility model provides a lower car body middle cross beam structure, which comprises:

[0005] A cross beam upper plate and a cross beam lower plate, the cross beam lower plate is connected with the cross beam upper plate, and an installation cavity is left between the cross beam upper plate and the cross beam lower plate;

[0006] A cross beam reinforcing piece, the cross beam reinforcing piece is arranged in the installation cavity along the length direction of the cross beam upper plate and the cross beam lower plate, the cross section of the cross beam reinforcing piece is a "J" type structure, and the cross beam reinforcing piece is connected with the cross beam upper plate and the cross beam lower plate at the same time;

[0007] Horizontal mounting parts are respectively arranged at the ends of the cross beam upper plate, vertical mounting parts are respectively arranged at the ends of the cross beam lower plate, and the horizontal mounting parts and the vertical mounting parts are used for being connected with the rocker from two directions.

[0008] The advantages of adopting the above technical solution are that in this application, an installation cavity is preset between the upper beam plate and the lower beam plate, and a beam reinforcement with a "U" - shaped structure is provided, so that the upper beam plate, the lower beam plate and the beam reinforcement form a high - stiffness structure, which is used to enhance the rigidity of the overall beam. The bending and torsional stiffness of the entire middle beam structure is greatly improved, the vibration transmitted from the road surface can be suppressed, and the vehicle side has stronger resistance to deformation and crushing ability.

[0009] Optionally, the beam reinforcement divides the installation cavity into three regions.

[0010] Optionally, a middle reinforcement is further provided in the middle of the beam reinforcement. The middle reinforcement is connected to the open end of the beam reinforcement. The edge of the middle reinforcement is bent to fit the upper beam plate, and the bent part of the middle reinforcement is fixedly connected to the upper beam plate.

[0011] Optionally, the end of the beam reinforcement, the vertical installation part and the lower beam plate are connected by bolts.

[0012] Optionally, the end of the upper beam plate extends horizontally to form the horizontal installation part.

[0013] Optionally, multiple reinforcing ribs are respectively provided on the upper beam plate, the lower beam plate and the beam reinforcement.

[0014] Optionally, one side of the upper beam plate is bent, and the side of the lower beam plate opposite to the upper beam plate is bent. The bent part of the upper beam plate is connected to the lower beam plate, and the bent part of the lower beam plate is connected to the upper beam plate. The installation cavity is formed between the upper beam plate and the lower beam plate.

[0015] Optionally, multiple weight - reducing holes are also provided on the upper beam plate, the lower beam plate and the beam reinforcement.

[0016] Optionally, multiple screw holes for connection are provided on the horizontal installation part and the vertical installation part.

[0017] As described above, a middle beam structure of a vehicle body has the following beneficial effects: an installation cavity is preset between the upper beam plate and the lower beam plate, and a beam reinforcement with a "U" - shaped structure is provided, so that the upper beam plate, the lower beam plate and the beam reinforcement form a high - stiffness structure, which is used to enhance the rigidity of the overall beam. The bending and torsional stiffness of the entire middle beam structure is greatly improved, the vibration transmitted from the road surface can be suppressed, and the vehicle side has stronger resistance to deformation and crushing ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It shows a schematic diagram of the first - perspective structure of the middle beam structure of the vehicle body in one embodiment of the present utility model;

[0019] Figure 2 Fig. 2 shows a second perspective view of the cross beam structure in the lower vehicle body in an embodiment of the present application;

[0020] Figure 3 Fig. 3 shows a structure diagram of the cross beam lower plate and the cross beam reinforcing member in an embodiment of the present application;

[0021] Figure 4 Fig. 4 shows a structure diagram of the cross beam reinforcing member and the middle reinforcing member in an embodiment of the present application;

[0022] Figure 5 Fig. 5 shows a structure diagram of the connection between the cross beam structure and the rocker beam in the lower vehicle body in an embodiment of the present application.

[0023] Part number explanation

[0024] 1 cross beam upper plate

[0025] 101 horizontal mounting portion

[0026] 2 cross beam lower plate

[0027] 201 vertical mounting portion

[0028] 3 cross beam reinforcing member

[0029] 4 middle reinforcing member DETAILED DESCRIPTION

[0030] The embodiments of the present application will be described in detail with specific examples. The skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. The present application can also be implemented or applied in different specific embodiments, and the details in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application.

[0031] Please refer to Figures 1 to 5It is to be noted that the drawings provided in the present embodiment only schematically illustrate the basic concept of the present application, and the drawings only show the components related to the present application, not the components number, shape and size when actually implemented. The shape, number and proportion of each component when implemented can be randomly changed, and the component layout pattern can be more complex. The structure, proportion, size and the like shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, so they do not have substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the present specification are only for the convenience of clear description, not for limiting the scope of the present application, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also regarded as the scope of the present application.

[0032] Please refer to Figures 1 to 5 The utility model provides a lower car body middle cross beam structure, which comprises:

[0033] A cross beam upper plate 1 and a cross beam lower plate 2, wherein the cross beam lower plate 2 is connected with the cross beam upper plate 1, and an installation cavity is left between the cross beam upper plate 1 and the cross beam lower plate 2;

[0034] A cross beam reinforcing member 3, which is arranged in the installation cavity along the length direction of the cross beam upper plate 1 and the cross beam lower plate 2, and the cross section of the cross beam reinforcing member 3 is a "J" type structure, and the cross beam reinforcing member 3 is connected with the cross beam upper plate 1 and the cross beam lower plate 2 at the same time;

[0035] Horizontal mounting parts 101 are arranged at the ends of the cross beam upper plate 1 respectively, and vertical mounting parts 201 are arranged at the ends of the cross beam lower plate 2 respectively, and the horizontal mounting parts 101 and the vertical mounting parts 201 are used to connect with the rocker beam from two directions.

[0036] It is to be noted that in the present scheme, after the cross beam upper plate 1 and the cross beam lower plate 2 are arranged, an installation cavity is left between the cross beam upper plate 1 and the cross beam lower plate 2, so that the cross beam upper plate 1 and the cross beam lower plate 2 form a frame structure, and a "J" type structure cross beam reinforcing member 3 is arranged in the installation cavity, so that the cross beam upper plate 1, the cross beam lower plate 2 and the cross beam reinforcing member 3 further form a stable frame structure.

[0037] For example, the cross beam reinforcing member 3 divides the installation cavity into three areas.

[0038] It should also be noted that, due to the "U"-shaped structure of the beam reinforcement 3, a multi-support structure is formed inside the mounting cavity to reinforce the frame structure formed by the upper beam plate 1 and the lower beam plate 2.

[0039] For example, a central reinforcement 4 is provided in the middle of the crossbeam reinforcement 3. The central reinforcement 4 is connected to the open end of the crossbeam reinforcement 3. The edge of the central reinforcement 4 is bent and fits against the upper plate 1 of the crossbeam. The bent part of the central reinforcement 4 is fixedly connected to the upper plate 1 of the crossbeam.

[0040] It should also be noted that when the central reinforcing member 4 is set, it further strengthens the structural strength of the crossbeam reinforcing member 3. At the same time, the edge of the central reinforcing member 4 is bent and fits against the upper plate 1 of the crossbeam, increasing the contact area with the upper plate 1 of the crossbeam. During connection, more welding points can be set to achieve reinforcement of a larger area.

[0041] For example, the end of the crossbeam reinforcement 3, the vertical mounting part 201, and the lower plate of the crossbeam are connected by bolts.

[0042] It should also be noted that when installing the vertical mounting part 201, the end of the crossbeam reinforcement 3, the vertical mounting part 201 and the lower plate of the crossbeam are connected simultaneously to simplify the installation structure.

[0043] Furthermore, the vertical mounting part 201 can also be formed by bending the end of the lower plate 2 of the crossbeam.

[0044] For example, the end of the upper plate 1 of the crossbeam extends horizontally to form the horizontal mounting portion 101.

[0045] It should also be noted that the horizontal mounting part 101 is integrally formed with the upper plate 1 of the crossbeam, which further improves the structural strength of the horizontal mounting part 101.

[0046] For example, the upper plate 1 of the crossbeam, the lower plate 2 of the crossbeam, and the crossbeam reinforcing member 3 are each provided with multiple reinforcing ribs.

[0047] It should also be noted that the purpose of setting the reinforcing ribs is to strengthen the frame structure formed by the upper plate 1 of the crossbeam, the lower plate 2 of the crossbeam, and the crossbeam reinforcing member 3.

[0048] For example, one side of the upper beam plate 1 is bent, and the lower beam plate 2 is bent on the opposite side of the upper beam plate 1. The bent portion of the upper beam plate 1 is connected to the lower beam plate 2, and the bent portion of the lower beam plate 2 is connected to the upper beam plate 1. The mounting cavity is formed between the upper beam plate 1 and the lower beam plate 2.

[0049] It needs to be explained that the purpose of the arrangement is to have the installation cavity between the upper beam plate 1 and the lower beam plate 2 when connected.

[0050] Exemplarily, a plurality of lightening holes are arranged on the upper beam plate 1, the lower beam plate 2 and the beam reinforcing member 3.

[0051] It needs to be explained that the purpose of the arrangement of the lightening holes is to reduce the weight of the whole structure as much as possible without damaging the strength of the whole structure.

[0052] Exemplarily, a plurality of screw holes for connection are arranged on the horizontal mounting portion 101 and the vertical mounting portion 201.

[0053] It needs to be explained that the screw holes arranged on the horizontal mounting portion 101 and the vertical mounting portion 201 are connected with the rocker beam through bolts.

[0054] Exemplarily, the horizontal mounting portion 101 is attached to the rocker beam, and the vertical mounting portion 201 is attached to the rocker beam to form a box, and then the bolts are used to fix and connect the two.

[0055] In summary, the lower vehicle body middle beam structure has the installation cavity between the upper beam plate 1 and the lower beam plate 2, the beam reinforcing member 3 in the shape of "several" is arranged, the upper beam plate 1, the lower beam plate 2 and the beam reinforcing member 3 form a high-rigidity structure, the rigidity of the whole beam is improved, the bending and torsional rigidity of the whole middle beam structure is greatly improved, the vibration transmitted from the road surface can be inhibited, and the deformation and crushing resistance of the side of the vehicle is stronger.

[0056] The above examples only exemplarily illustrate the principle and effect of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above examples without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought of the utility model should be covered by the claims of the utility model.

Claims

1. A lower body cross member structure for connecting with a rocker beam, characterized by, The utility model relates to a kind of door sill beams, including: Crossbeam upper plate and crossbeam lower plate, the crossbeam lower plate is connected with the crossbeam upper plate, installation cavity is left between the crossbeam upper plate and the crossbeam lower plate; Crossbeam reinforcement is arranged in the installation cavity along the length direction of the crossbeam upper plate and the crossbeam lower plate, the cross section of the crossbeam reinforcement is "several" type structure, the crossbeam reinforcement is connected with the crossbeam upper plate and the crossbeam lower plate simultaneously; Horizontal mounting portion is respectively arranged in the end of the crossbeam upper plate, vertical mounting portion is respectively arranged in the end of the crossbeam lower plate, and the horizontal mounting portion and the vertical mounting portion are used to connect with the door sill beam from two directions.

2. The undercarriage body crossbeam structure according to claim 1, characterized in that: The crossbeam reinforcement divides the installation cavity into three regions.

3. The undercarriage body crossbeam structure of claim 1, wherein: Middle reinforcement is further arranged in the middle of the crossbeam reinforcement, the middle reinforcement is connected with the opening end of the crossbeam reinforcement, the edge of the middle reinforcement is bent and attached to the crossbeam upper plate, and the bent part of the middle reinforcement is fixedly connected with the crossbeam upper plate.

4. The undercarriage body crossbeam structure of claim 1, wherein: The end of the crossbeam reinforcement, the vertical mounting portion and crossbeam lower plate are connected by bolt.

5. The undercarriage body crossbeam structure of claim 1, wherein: The end of the crossbeam upper plate is horizontally extended to form the horizontal mounting portion.

6. The undercarriage body crossbeam structure of claim 1, wherein: A plurality of reinforcing ribs are respectively arranged on the crossbeam upper plate, the crossbeam lower plate and the crossbeam reinforcement.

7. The undercarriage body crossbeam structure of claim 1, wherein: One side of the crossbeam upper plate is bent, and the opposite side of the crossbeam lower plate is bent, the bent part of the crossbeam upper plate is connected with the crossbeam lower plate, the bent part of the crossbeam lower plate is connected with the crossbeam upper plate, and the installation cavity is formed between the crossbeam upper plate and the crossbeam lower plate.

8. The undercarriage body crossbeam structure of claim 1, wherein: A plurality of lightening holes are further arranged on the crossbeam upper plate, the crossbeam lower plate and the crossbeam reinforcement.

9. The undercarriage body crossbeam structure of claim 1, wherein: A plurality of screw holes for connection are arranged on the horizontal mounting portion and the vertical mounting portion.

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