CN111605621A

CN111605621A - Vehicle body structure and vehicle

Info

Publication number: CN111605621A
Application number: CN201910133698.7A
Authority: CN
Inventors: 顾林林; 马玎
Original assignee: Beijing Treasure Car Co Ltd
Current assignee: Beijing Treasure Car Co Ltd
Priority date: 2019-02-22
Filing date: 2019-02-22
Publication date: 2020-09-01
Anticipated expiration: 2039-02-22
Also published as: CN111605621B

Abstract

The present disclosure relates to a vehicle body structure and a vehicle, the vehicle body structure including: two front side members (100); the protective beam (200) is positioned below the front longitudinal beam (100), and two ends of the protective beam (200) are respectively fixed on the corresponding front longitudinal beam (100); and the two ends of the front floor lower cross beam (300) are respectively fixed on the corresponding front longitudinal beams (100), at least one end of the front floor lower cross beam (300) extends into the front longitudinal beams (100), and the protective beam (200) is connected to the through position of the front floor lower cross beam (300) and the front longitudinal beams (100). Through above-mentioned technical scheme, front longitudinal, preceding floor bottom end rail and protective beam interconnect enclose into the loop configuration to can effectively improve vehicle body structure's intensity, make it can disperse the transmission with the impact when receiving the collision, be difficult for producing the deformation, and then improve driving safety.

Description

Vehicle body structure and vehicle

Technical Field

The present disclosure relates to the field of vehicle technology, and in particular, to a vehicle body structure and a vehicle using the same.

Background

The existing vehicle body structure, for example, at the corresponding position of a front floor assembly and a front cabin assembly, is not provided with a special protection structure for a power battery and a high-voltage wire harness, when the front face of an automobile test is subjected to 40% overlapping deformable barrier collision analysis, a middle longitudinal beam structure of the front cabin has a large turn in a region close to the power battery, and collision force cannot be effectively transmitted backwards, so that the invasion amount of a foot metal plate and an A column metal plate of a driver is increased, and the longitudinal beam is deformed at a place where the longitudinal beam is not deformed, so that the safety of passengers in the automobile is influenced.

Disclosure of Invention

An object of the present disclosure is to provide a vehicle body structure capable of effectively transmitting and dispersing a collision force received by a vehicle body, improving driving safety.

Another object of the present disclosure is to provide a vehicle equipped with the vehicle body structure provided by the present disclosure.

In order to achieve the above object, the present disclosure provides a vehicle body structure including: two front longitudinal beams; the protective beam is positioned below the front longitudinal beam, and two ends of the protective beam are respectively fixed on the corresponding front longitudinal beam; and the two ends of the front floor lower cross beam are respectively fixed on the corresponding front longitudinal beams, at least one end of the front floor lower cross beam extends into the front longitudinal beams, and the protective beam is connected at the through position of the front floor lower cross beam and the front longitudinal beams.

Optionally, a side opening is formed in a side wall of the front longitudinal beam, and an end of the front floor lower cross beam extends into the side opening.

Optionally, a front extending portion used for being fixedly connected with the front longitudinal beam and the guard beam is formed at an end portion of the lower cross beam of the front floor, the front extending portion extends into the lateral opening, the front extending portion comprises a first wall capable of being attached to the bottom wall of the front longitudinal beam, and a first fastening hole for a first fastening piece to penetrate through is formed in the first wall.

Optionally, a reinforcing plate connected between two side walls of the front longitudinal beam is arranged inside the front longitudinal beam, a cavity for accommodating the forward extension portion is formed between the bottom of the reinforcing plate and the bottom wall of the front longitudinal beam, the forward extension portion is further formed with a second wall extending upwards, and the top of the second wall abuts against the reinforcing plate.

Optionally, the guard beam includes the roof beam body and fixes the mounting panel at roof beam body both ends, first fastener passes in proper order the mounting panel, front longitudinal and preceding extension.

Optionally, a first weld nut is disposed on the first wall, and the first weld nut is in fastening fit with the first fastener.

Optionally, the mounting plate comprises a first mounting hole for the first fastener to pass through and a second mounting hole for the front side frame to be fixedly connected.

Optionally, a reinforcing rib is arranged inside the guard beam.

Optionally, the front longitudinal beam comprises an inflection section, and an end of the front floor lower cross beam is bent forwards and extends into the inside of the inflection section to be in transition connection with the inflection section.

According to a second aspect of the present disclosure, a vehicle is provided, the vehicle comprising a body structure according to the above.

Through above-mentioned technical scheme, front longitudinal, preceding floor bottom end rail and protective beam interconnect enclose into the loop configuration to can effectively improve vehicle body structure's intensity, make it can disperse the transmission with the impact when receiving the collision, be difficult for producing the deformation, and then improve driving safety.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic illustration of a vehicle body structure provided by an exemplary embodiment of the present disclosure;

FIG. 2 is a bottom view of the vehicle body structure shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic structural view of a fender beam of the vehicle body structure illustrated in FIG. 1;

FIG. 5 is a cross-sectional view of the mounting plate at the location of the first mounting hole in the vehicle body structure shown in FIG. 1;

FIG. 6 is a cross-sectional view of the mounting plate at the location of a second mounting hole in the vehicle body structure shown in FIG. 1;

fig. 7 is a sectional view of the beam body in the vehicle body structure shown in fig. 1.

Description of the reference numerals

100 front longitudinal beam 110 side opening

200 guard beam 210 beam body

220 mounting plate 230 second reinforcing rib

221 first mounting hole 222 second mounting hole

300 front floor lower beam 310 front extension

410 first fastener 420 first weld nut

430 second fastener 440 second weld nut

500 reinforcing plate 510 first reinforcing bar

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise stated, the terms of orientation used such as "up", "down", "top" and "bottom" are defined according to the actual usage state of the vehicle body structure, and with reference to fig. 1, the up and down in the drawing direction are the opposite directions of the up and down in the actual usage of the vehicle body structure, that is, the up in the drawing direction of fig. 1 is the down in the actual usage of the vehicle body structure, and the down in the drawing direction of fig. 1 is the up in the actual usage of the vehicle body structure, "front" and "rear" are defined with reference to the vehicle, that is, the front and rear are the traveling direction of the vehicle, and "inner" and "outer" are defined with respect to the self contour of the corresponding component. Furthermore, the terms "first," "second," and the like, as used in this disclosure, are intended to distinguish one element from another, and not necessarily for order or importance. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated.

Referring to fig. 1, the present disclosure provides a vehicle body structure including two front side members 100, and a guard beam 200 and a front floor lower cross member 300 respectively located between the two front side members 100. The guard beam 200 may be located below the front longitudinal beam 100, two ends of the guard beam 200 may be respectively fixed to the corresponding front longitudinal beam 100, and two ends of the front floor lower cross beam 300 may also be respectively fixed to the corresponding front longitudinal beam 100. At least one end of the front floor lower cross beam 300 extends into the front longitudinal beam 100, and the guard beam 200 is connected to the penetrating position of the front floor lower cross beam 300 and the front longitudinal beam 100. It should be noted that the vehicle body structure in the embodiment of the present disclosure mainly relates to a front floor assembly and a front cabin assembly of the vehicle body, the front floor assembly includes a front underfloor cross member 300, and the front cabin assembly includes a front side member 100.

Specifically, the guard beam 200 and the front floor lower cross member 300 may be connected to the inflection section of the front side member 100, and the front floor lower cross member 300 is formed in a structure that is gradually protruded from both ends toward the center to be fittingly overlapped on the front floor and the center tunnel. Referring to fig. 1 and 2, the front side member 100 extends in the front-rear direction, an inflection section bent toward the inside of the vehicle body is formed at the middle portion thereof, and the end portion of the front floor lower cross member 300 is bent forward and extends into the inside of the inflection section to be in transitional connection with the inflection section, so that the front side member 100 and the front floor lower cross member 300 are fixed conveniently on the one hand, and the force transmission is facilitated on the other hand.

Thus, the front longitudinal beam 100, the guard beam 200 and the front floor lower cross beam 300 are connected with each other and form a ring structure in the vertical direction, so that the torsional rigidity and the static rigidity of the vehicle body structure can be effectively improved, force and energy can be dispersed and transmitted to the front wall, the central passage and the side wall of the vehicle body when the vehicle body structure is collided or is impacted by the ground, the intrusion amount during collision is reduced, the safety of a cab is improved, and a power battery and a high-voltage line at the front floor assembly and the front cabin assembly are effectively protected. It should be noted that, one end of the front floor lower cross member 300 may extend into the interior of the front longitudinal member 100, and the other end is fixed to the side wall of the front longitudinal member 100, or both ends may extend into the interior of the corresponding front longitudinal member 100 at the same time, and the present disclosure will be described only by taking an example that both ends of the front floor lower cross member 300 extend into the interior of the front longitudinal member 100 at the same time.

Further, referring to fig. 2 and 3, the two front side frames 100 may be respectively formed with lateral openings 110 on the side walls close to each other, and both ends of the front floor lower cross member 300 may respectively extend into the corresponding lateral openings 110 to be fixedly connected with the front side frames 100. Referring to fig. 6, the front side member 100 is formed in a U-shaped structure having an opening facing upward, and is fixedly connected to the upper front floor by flanges of two side walls. The lateral opening 110 may be a groove penetrating from the bottom edge to the top of the front longitudinal beam 100, and a flange in transitional contact with the front floor lower beam 300 may be formed outward at the edge of the groove, so that the end of the front floor lower beam 300 extends into and is fittingly attached to the flange, thereby increasing the contact area between the front floor lower beam 300 and the front longitudinal beam 100, and facilitating the uniform dispersion and transmission of the stress on the front longitudinal beam 100. Here, fig. 2 is a bottom view of fig. 1, that is, fig. 2 is a view of fig. 1 turned 180 °, wherein, referring to fig. 2, an outward direction of a vertical drawing is an upper side when the vehicle body structure is actually used, and an inward direction of the vertical drawing is a lower side when the vehicle body structure is actually used.

Further, as shown in fig. 3, the end of the lower front floor beam 300 abuts against the flange of the lateral opening 110, and in order to achieve the fixed connection with the front longitudinal beam 100 and the guard beam 200, the end of the lower front floor beam 300 may be formed with a front extension 310 extending into the lateral opening 110 along the extending direction thereof. The front extension 310 may include a first wall that can be attached to the bottom wall of the front side member 100, and the first wall may be an extension of the bottom wall of the front under-floor cross member 300, so as to further ensure the contact area between the front under-floor cross member 300 and the front side member 100. The first wall may be provided with a first fastening hole for the first fastening member 410 to pass through, so as to be fixedly connected to the front side member 100 through the first fastening member 410. Of course, the first wall may be fixed to the front side member 100 in other forms, for example, may be welded to the bottom wall of the front side member 100.

According to an embodiment, referring to fig. 2 and 3, in order to further increase the rigidity of the vehicle body structure, the inner portion of the front side member 100 may be further provided with a reinforcement plate 500 connected between both side walls of the front side member 100, and a cavity for accommodating the forward extension portion 310 may be formed between a bottom portion of the reinforcement plate 500 and a bottom wall of the front side member 100, and may also provide a connecting space for the first fastening member 410 and a second fastening member 430 described below. The reinforcing plate 500 may be a flat plate structure abutting between two side walls of the front longitudinal beam 100, or may be a U-shaped structure shown in fig. 6, where two side walls of the U-shaped structure respectively abut against two side walls of the front longitudinal beam 100, for example, may be welded to the two side walls of the front longitudinal beam 100, and have the same opening direction as the front longitudinal beam 100. Referring to fig. 6, the reinforcing plate 500 may be further formed with first reinforcing beads 510 protruding from the profile thereof, so that the strength of the reinforcing plate 500 itself may be further increased.

Further, the protruding portion 310 may further be formed with a second wall extending upward, and the second wall may be specifically a plate-shaped structure extending upward from two opposite edges of the first wall, and the end of the second wall abuts against the reinforcing plate 500, that is, the protruding portion 310 in the present disclosure may also be a U-shaped plate, so that the protruding portion 310 may be supported at the lower portion of the reinforcing plate 500, the structural strength of the protruding portion 310 is improved, and the pre-positioning of the protruding portion 310 may be better achieved. In addition, the forward extension 310 may be integrally formed with the front floor lower beam 300 for cost savings and ease of manufacturing.

Referring to fig. 1 and 4, in the embodiment of the present disclosure, the guard beam 200 may include a beam body 210 and mounting plates 220 fixed to both ends of the beam body 210, and a first fastener 410 sequentially passes through the mounting plates 220, the front side member 100, and the forward extension 310 to fixedly connect the guard beam 200, the front side member 100, and the front floor lower cross member 300 together. The beam body 210 may be a rectangular beam made of channel steel, and the mounting plate 220 may have the same structural form as the beam body 210, and the two may be welded or detachably connected. The mounting plate 220 may further increase the strength of the guard beam 200 and facilitate the fixed connection of the beam body 210 with the front side member 100.

In addition, referring to fig. 5, the first fastener 410 may be a threaded fastener, and in order to further increase the connection strength of the front extension portion 310 with the front longitudinal beam 100 and the guard beam 200, the first wall may be correspondingly provided with a first weld nut 420 in matching connection with the threaded fastener.

In the embodiment of the present disclosure, referring to fig. 1, 4 and 6, the mounting plate 220 may be disposed along an extending direction of the front side member 100, and may include a first mounting hole 221 for passing the first fastening member 410 therethrough and a second mounting hole 222 for fixedly connecting with the front side member 100. The first mounting hole 221 and the second mounting hole 222 may be spaced apart from each other on the mounting plate 220, for example, disposed at two ends of the mounting plate 220, respectively, and the beam body 210 is fixedly connected between the first mounting hole 221 and the second mounting hole 222. In addition, the distance between the first mounting hole 221 and the second mounting hole 222 may be greater than half the width of the front extension portion 310, i.e., the first mounting hole 221 is used for fixedly connecting the mounting plate 220, the front side member 100 and the front extension portion 310, and the second mounting hole 222 is used for fixedly connecting the mounting plate 220 and the front side member 100. When the guard beam 200 is installed, the mounting plate 220 may be pre-fixed to the front side member 100 by the second fastening member 430 engaged with the second mounting hole 222, and then the first fastening member 410 may be installed on the first mounting hole 221. The second fastening member 430 may also be a threaded fastening member, and a second weld nut 440 capable of increasing the connection strength may also be correspondingly disposed on the bottom wall of the front side member 100. When the mounting plate 220 is formed into a rectangular frame structure, that is, when the mounting plate 220 has a first plate surface and a second plate surface that are opposite to each other, the first mounting hole 221 and the second mounting hole 222 are located on the first plate surface of the mounting plate 220 that is attached to the front side rail 100, and for convenience of mounting, through holes may be further provided at positions of the second plate surface of the mounting plate 220 that correspond to the first mounting hole 221 and the second mounting hole 222. As such, when the beam body 210 is impacted from the bottom of the vehicle body, the impact force may be transmitted to the cowl, the center tunnel, and the side sill of the vehicle body through the connection structures at the first and second mounting

holes

221 and 222, respectively, thereby effectively improving the impact performance of the vehicle body.

According to an embodiment, as shown in fig. 7, in order to further increase the structural strength of the girder 200, the second reinforcing beads 230 may be provided inside each of the girder body 210 and the mounting plate 220.

The present disclosure also provides a vehicle comprising the above vehicle body chassis. The vehicle has all the beneficial effects of the vehicle body chassis, and the detailed description is omitted.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A vehicle body structure characterized by comprising:

two front side members (100);

the protective beam (200) is positioned below the front longitudinal beam (100), and two ends of the protective beam (200) are respectively fixed on the corresponding front longitudinal beam (100); and

the protective beam comprises a front floor lower beam (300), wherein two ends of the front floor lower beam (300) are respectively fixed on the corresponding front longitudinal beams (100), at least one end of the front floor lower beam (300) extends into the front longitudinal beams (100), and a protective beam (200) is connected to the through position of the front floor lower beam (300) and the front longitudinal beams (100).

2. The vehicle body structure according to claim 1, characterized in that a side opening (110) is formed in a side wall of the front side member (100), and an end portion of the front underfloor cross member (300) protrudes into the side opening (110).

3. The vehicle body structure of claim 2, wherein the end of the front underfloor cross member (300) is formed with a front extension (310) for fixed connection with the front side member (100) and the guard beam (200), the front extension (310) protrudes into the lateral opening (110), the front extension (310) includes a first wall capable of fitting against a bottom wall of the front side member (100), and the first wall is formed with a first fastening hole for a first fastening member (410) to pass through.

4. The vehicle body structure according to claim 3, characterized in that the inside of the front side member (100) is provided with a reinforcement plate (500) connected between both side walls of the front side member (100), a cavity for accommodating the forward extension (310) is formed between the bottom of the reinforcement plate (500) and the bottom wall of the front side member (100), and the forward extension (310) is further formed with a second wall extending upward, the top of the second wall abutting against the reinforcement plate (500).

5. The vehicle body structure of claim 3, wherein the guard beam (200) includes a beam body (210) and mounting plates (220) fixed to both ends of the beam body (210), and the first fastening member (410) passes through the mounting plates (220), the front side member (100), and the forward extension (310) in this order.

6. The vehicle body structure of claim 5, wherein a first weld nut (420) is disposed on the first wall, the first weld nut (420) being in tight engagement with the first fastener (410).

7. The vehicle body structure of claim 5, wherein the mounting plate (220) includes a first mounting hole (221) for the first fastener (410) to pass through and a second mounting hole (222) for fixed connection with the front side member (100).

8. The vehicle body structure according to claim 5, characterized in that a reinforcing rib (230) is provided inside the guard beam (200).

9. The vehicle body structure according to any one of claims 1 to 8, wherein the front side member (100) includes an inflection section, and an end portion of the front floor lower cross member (300) is bent forward and protrudes inside the inflection section to be transitionally connected to the inflection section.

10. A vehicle, characterized in that the vehicle comprises a body structure according to any one of claims 1-9.