CN215097820U - Vehicle body front structure and automobile - Google Patents

Abstract

The utility model provides an automobile body front structure and car, the utility model discloses an automobile body front structure includes automobile body longeron, wheel house boundary beam and threshold roof beam, still includes before enclose crossbeam, preceding floor crossbeam and anterior longeron. The front end of the wheel house boundary beam is connected with the automobile body longitudinal beam, the rear end of the wheel house boundary beam is connected with the threshold beam through a connecting piece, the front surrounding beam penetrates through the automobile body longitudinal beam and is connected with the connecting piece, the front floor beam is connected with the automobile body longitudinal beam and corresponds to the front floor beam, and a reinforcing piece is connected between the automobile body longitudinal beam and the threshold beam. The front longitudinal beam is positioned between the front wall cross beam and the front floor cross beam and arranged on one side of the vehicle body longitudinal beam, one end of the front longitudinal beam is connected with the vehicle body longitudinal beam, and the other end of the front longitudinal beam is connected with the front floor cross beam. The utility model discloses an automobile body anterior structure can improve the vehicle in the bearing capacity of the anterior cabin skeleton of vehicle when head-on collision, and then improves the security of vehicle.

Description

Vehicle body front structure and automobile

Technical Field

The utility model relates to an automobile structure technical field, in particular to automobile body front portion structure. Additionally, the utility model discloses still relate to an automobile.

Background

The cabin frame of the automobile is a frame structure positioned at the front part of the automobile, and the function of the cabin frame is to bear a power system and connect a chassis system, so that installation positions, arrangement spaces and the like are provided for automobile body accessories and the like. In addition, when the front of the automobile is collided, the cabin framework is firstly impacted by external large force, and the cabin framework receives and decomposes vibration from running components such as an engine during normal running. Therefore, the automobile has high requirements on safety, comfort and reliability of the cabin framework.

The front collision is mainly considered to test the crashworthiness of a cabin framework in a vehicle body structure because the vehicle accident frequently occurs to the front collision. Therefore, how to improve the crashworthiness of the cabin frame during the frontal collision of the vehicle, so as to better protect the safety of the passenger cabin, is a direction that needs to be continuously developed and improved in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a front structure of a vehicle body, so as to improve the bearing capacity of a front cabin frame of the vehicle during a frontal collision, and further improve the safety of the vehicle.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a vehicle body front portion structure, includes automobile body longeron, wheel house boundary beam and threshold roof beam, still includes preceding enclosing crossbeam, preceding floor beam and front portion longeron, wherein:

the front end of the wheel casing side beam is connected with the vehicle body longitudinal beam, and the rear end of the wheel casing side beam is connected with the threshold beam through a connecting piece;

the front wall cross beam penetrates through the vehicle body longitudinal beam and is connected with the connecting piece; the front floor cross beam is connected with the vehicle body longitudinal beam and corresponds to the front floor cross beam, and a reinforcing piece is connected between the vehicle body longitudinal beam and the threshold beam;

the front longitudinal beam is positioned between the front wall cross beam and the front floor cross beam and arranged on one side of the vehicle body longitudinal beam, one end of the front longitudinal beam is connected with the vehicle body longitudinal beam, and the other end of the front longitudinal beam is connected with the front floor cross beam.

Further, the front floor beam comprises a first beam and a second beam which are arranged at a distance from each other in a front-back mode; the front longitudinal beam is connected with the first cross beam.

Furthermore, the front end of the vehicle body longitudinal beam is connected with an anti-collision beam.

Furthermore, the front end of the vehicle body longitudinal beam is provided with a mounting bracket and a supporting bracket; the mounting bracket is connected to the end part of the vehicle body longitudinal beam; the support bracket is connected between the mounting bracket and the vehicle body longitudinal beam, and a triangular structure is formed by enclosing the vehicle body longitudinal beam, the mounting bracket and the support bracket; the anti-collision beam and/or the wheel cover boundary beam are connected to the mounting bracket.

Further, the front longitudinal beam is arranged on the inner side of the vehicle body longitudinal beam; a torsion box is arranged on the outer side of the longitudinal beam of the vehicle body; one end of the torsion box is connected with the vehicle body longitudinal beam, and the other end of the torsion box is connected with the connecting piece.

Further, the torsion box and the front side member are connected to the same region of the vehicle body side member.

Furthermore, the connection point of the torque box and the vehicle body longitudinal beam and the connection point of the front longitudinal beam and the vehicle body longitudinal beam are arranged in a right-facing mode.

Further, the connecting piece is an A-pillar inner plate.

Furthermore, along the length direction of the vehicle body, the connecting point of the wheel house boundary beam and the vehicle body longitudinal beam is positioned on the front side of the connecting point of the front wall cross beam and the vehicle body longitudinal beam; and the connecting points of the front longitudinal beam, the torsion box and the body longitudinal beam are positioned at the rear side of the connecting point of the front wall cross beam and the body longitudinal beam.

Compared with the prior art, the utility model discloses following advantage has:

the utility model discloses a vehicle body front structure, arranged vehicle body longeron, wheel house boundary beam, threshold roof beam and front portion longeron in the length direction of vehicle, wherein wheel house boundary beam and threshold roof beam pass through the connecting piece and connect as an organic wholely, like this, formed many atress routes that bear the front portion and strike in the width direction of vehicle; the beam bodies of all stress paths are connected with the front floor beam through the front wall beam, so that the impact force borne by the vehicle body longitudinal beam mainly stressed can be decomposed towards the beam bodies on other stress paths, the stress transmission and decomposition performance of the front structure of the vehicle body are improved, the bearing capacity of the front cabin framework of the vehicle during frontal collision of the vehicle is improved, and the safety of the vehicle is improved.

Furthermore, the utility model discloses set up the crashproof roof beam of vehicle at the front end of automobile body longeron, make the overall arrangement of automobile body anterior structure reasonable, and the crashproof roof beam that at first receives the collision can mainly transmit the atress for automobile body longeron, does benefit to automobile body longeron and transmits and decompose the impact better to the roof beam body that borders on.

Additionally, the utility model discloses a connection strength between crashproof roof beam and the automobile body longeron can effectively be promoted in the setting of installing support and support holder, and by the triangle-shaped bearing structure that installing support, support holder and automobile body longeron formed, can improve the structural stability between crashproof roof beam and the automobile body longeron greatly. Simultaneously, the setting of installing support also is convenient for couple together the front end of wheel house boundary beam and automobile body longeron to form the support to the anticollision roof beam jointly.

Another object of the present invention is to provide a vehicle, wherein the front structure of the vehicle body is provided in the vehicle body of the vehicle.

The utility model discloses a beneficial effect that car has for prior art is the same with above-mentioned automobile body front portion structure, no longer gives unnecessary details here.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

fig. 1 is a schematic perspective view of a front structure of a vehicle body according to a first embodiment of the present invention;

fig. 2 is a bottom view of the vehicle body front structure according to the first embodiment of the present invention;

FIG. 3 is a partial enlarged view of portion A of FIG. 2;

fig. 4 is a schematic structural view of the vehicle body front structure according to the first embodiment of the present invention at another viewing angle;

FIG. 5 is an enlarged view of a portion of FIG. 4 at B;

description of reference numerals:

1. a body rail; 20. an A column inner plate; 21. a wheel cover edge beam; 22. a threshold beam; 30. mounting a bracket; 31. a support bracket; 40. a torque box; 41. a front stringer; 5. a front wall beam; 501. a middle section; 501. a side section; 6. a front floor beam; 601. a first cross member; 602. a second cross member; 7. an anti-collision beam; 8. a reinforcement;

a. a first node; b. a second node; c. and a third node.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the appearances of the terms first, second, etc. in the figures are also for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless expressly limited otherwise. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The present embodiment relates to a vehicle body front structure that can improve the bearing capacity of a vehicle front cabin frame at the time of a frontal collision of a vehicle, and can improve the safety of the vehicle.

As shown in fig. 1 and 2, the vehicle body front structure includes a vehicle body side member 1, a wheel house side member 21, and a rocker member 22, and further includes a cowl cross member 5, a front floor cross member 6, and a front side member 41. Wherein, the front end of the wheel house boundary beam 21 is connected with the vehicle body longitudinal beam 1, and the rear end of the wheel house boundary beam 21 is connected with the threshold beam 22 through a connecting piece. The front wall cross beam 5 is respectively connected with the vehicle body longitudinal beam 1 and a connecting piece, the end part of the front floor cross beam 6 is connected with the vehicle body longitudinal beam 1 and the threshold beam 22 and corresponds to the front floor cross beam 6, and a reinforcing piece 8 is connected between the vehicle body longitudinal beam 1 and the threshold beam 22. Meanwhile, a front side member 41 is provided between the cowl cross member 5 and the front floor cross member 6 on the side of the body side member 1, and one end of the front side member 41 is connected to the body side member 1 and the other end is connected to the front floor cross member 6.

Based on the above-described overall design, the rear end of the wheel house side member 21 of the present embodiment is connected to the rocker beam 22 by a connecting member, so that the wheel house side member 21 and the rocker beam 22 are integrally connected to form a longitudinal beam body located on the outermost side of the vehicle, and the longitudinal beam body formed by the wheel house side member 21 and the body side member 1 is arranged in parallel. In this way, based on the symmetrical layout of the vehicle body front portion structure, four longitudinal beam bodies consisting of two vehicle body side members 1 and two sets of wheel house side members 21 and rocker members 22 are formed in the entire structure.

Between these four beam bodies, a front wall cross member 5 and a front floor cross member 6 are connected in a transverse manner. Specifically, the cowl cross member 5 is connected to the body side member 1 and the connecting member at a central position of a beam body composed of the wheel house side member 21 and the rocker member 22, respectively. The front floor cross member 6 has opposite ends connected to the body side members 1 on opposite sides thereof, and the front floor cross member 6 has opposite ends provided with the reinforcement members 8, respectively, as described above, for connecting the outer sides of the body side members 1 to the rocker members 22. The connecting element here may be a separately provided connecting plate, and as a preferred embodiment, the connecting element is an a-pillar inner plate 20 in this embodiment. The A-pillar inner plate 20 serves as a connecting piece, the A-pillar inner plate is matched with the arrangement position of the A-pillar inner plate 20, the A-pillar and the vehicle body structure can be tightly connected into a whole through the A-pillar inner plate 20, and the improvement of the overall strength of the vehicle body is facilitated.

Based on the above-described structure, the front side member 41 is disposed between the cowl cross member 5 and the front floor cross member 6 on the side of the body side member 1, and one end of the front side member 41 is connected to the body side member 1 and the other end is connected to the front floor cross member 6.

With the above arrangement, the present embodiment can form a plurality of force receiving paths in the width direction of the vehicle, which receive a front impact. The beam bodies of all stress paths are connected with the front floor beam 6 through the front wall beam 5, so that the impact force borne by the vehicle body longitudinal beam 1 mainly stressed can be decomposed towards the beam bodies on other stress paths, the stress transmission and decomposition performance of the vehicle body front structure are improved, the bearing capacity of the vehicle front cabin framework during frontal collision of the vehicle is favorably improved, and the safety of the vehicle is improved.

As also shown in fig. 1, the front floor cross member 6 includes a first cross member 601 and a second cross member 602 arranged at a distance from each other in the front-rear direction, and in correspondence therewith, respective ends corresponding to the first cross member 601 and the second cross member 602 are also provided with the reinforcing members 8, respectively. The front side member 41 is attached to the first cross member 601 on the front side, so that the front side member 41 is positioned between the cowl cross member 5 and the first cross member 601. The first cross member 601 and the second cross member 602 are arranged in parallel, so that not only can the connection strength of each longitudinal beam body be reinforced, but also the overall strength of the vehicle cab can be improved, and the impact resistance of the vehicle can be improved.

An impact beam 7 is provided at the front end of the vehicle body front structure, and the impact beam 7 is connected to the front end of the vehicle body side member 1. The anti-collision beam 7 of vehicle sets up at the front end of automobile body longeron 1, and then the overall arrangement of automobile body anterior structure is more reasonable, and in addition, the anti-collision beam 7 that receives the collision at first can mainly transmit the atress to automobile body longeron 1, and this just does benefit to automobile body longeron 1 and transmits and decomposes the impact to the roof beam body that adjoins better.

As shown in fig. 3, a mounting bracket 30 and a support bracket 31 are provided at the front end of the body side member 1 to form a connection of the impact beam 7, the wheel house side member 21, and the body side member 1. The shape of the bracket can be designed flexibly, and preferably, in the embodiment, the mounting bracket 30 is connected to the end part of the vehicle body longitudinal beam 1, and at least one of the anti-collision beam 7 and the wheel house side beam 21 is connected to the mounting bracket 30 and then connected to the front end of the vehicle body longitudinal beam 1.

Meanwhile, a support bracket 31 which is obliquely arranged is additionally arranged between the mounting bracket 30 which is transversely arranged at the end part of the vehicle body longitudinal beam 1 and the vehicle body longitudinal beam 1 so as to be connected between the mounting bracket 30 and the vehicle body longitudinal beam 1, the mounting bracket 30 and the support bracket 31 form a triangular structure in an enclosing manner. The arrangement of the mounting bracket 30 and the supporting bracket 31 can effectively improve the connection strength between the anti-collision beam 7 and the vehicle body longitudinal beam 1, and the triangular supporting structure formed by the mounting bracket 30, the supporting bracket 31 and the vehicle body longitudinal beam 1 can greatly improve the structural stability between the anti-collision beam 7 and the vehicle body longitudinal beam 1.

In this embodiment, the mounting bracket 30 is also provided to facilitate the connection between the wheel house side member 21 and the front end of the vehicle body side member 1, thereby jointly forming a support for the impact beam 7.

As shown in fig. 4 and 5, the front side member 41 is preferably provided inside the vehicle body side member 1; meanwhile, a torsion box 40 is arranged on the outer side of the vehicle body longitudinal beam 1. Wherein, one end of the torque box 40 is connected with the vehicle body longitudinal beam 1, and the other end is connected with the connecting piece. The front longitudinal beam 41 is arranged on the inner side of the vehicle body longitudinal beam 1, and meanwhile, the torsion box 40 is additionally arranged between the vehicle body longitudinal beam 1 and the connecting piece, so that the strength of the connecting part of the wheel house side beam 21, the threshold beam 22, the front wall cross beam 5 and the vehicle body longitudinal beam 1 can be greatly improved, and the torsion resistance of the part is effectively improved.

Generally, the torque box 40 and the front side member 41 may be made of stamped sheet metal parts, wherein the torque box 40 may be designed in a conventional torque box design form, and may be configured by combining shapes of components of the torque box.

Further, it is preferable that the torque box 40 and the front side member 41 are connected to the same region of the vehicle body side member 1. That is, the connection points of the torque box 40 and the front side member 41 on the vehicle side member 1 are arranged at one position and distributed on both sides of the vehicle side member 1, so that the torque box 40 and the front side member 41 support the vehicle side member 1 in a left-right opposite manner. Therefore, a stress decomposition node can be formed in the area, and the improvement of the stress decomposition and buffering performance of the vehicle body front structure is facilitated.

Based on the overall arrangement of the vehicle body front structure, the present embodiment preferably has the connection point between the torque box 40 and the vehicle body side member 1, and the connection point between the front side member 41 and the vehicle body side member 1, which are also disposed directly opposite to each other. At this time, the torsion boxes 40 and the front side members 41 are additionally arranged on the two body side members 1 which are symmetrically arranged left and right, so that the structure of the front structure of the body can be balanced and symmetrical, and the balanced decomposition of the impact force when the vehicle is impacted is facilitated.

In the vehicle body front portion structure according to the present embodiment, it should be further noted that, in the vehicle body length direction, the connection point of the wheel house side member 21 and the vehicle body side member 1 is located on the front side of the connection point of the front side member 5 and the vehicle body side member 1, and the connection point of the front side member 41 and the torque box 40 and the vehicle body side member 1 is located on the rear side of the connection point of the front side member 5 and the vehicle body side member 1. The arrangement of the connection points along the length direction of the vehicle body can be as shown in fig. 1 or fig. 2.

Thus, the present embodiment forms a plurality of force receiving paths in the width direction of the vehicle for receiving a front impact by arranging the body side member 1, the wheel house side member 21, the rocker member 22, and the front side member 41 in the length direction of the vehicle, wherein the wheel house side member 21 and the rocker member 22 are connected as a single body by the connecting member. The beam bodies of all stress paths are connected with the front floor beam 6 through the front wall beam 5, so that the impact force borne by the vehicle body longitudinal beam 1 mainly stressed can be decomposed towards the beam bodies on other stress paths, the stress transmission and decomposition performance of the vehicle body front structure are improved, the bearing capacity of the vehicle front cabin framework during frontal collision of the vehicle is favorably improved, and the safety of the vehicle is improved.

In a specific stress decomposition and buffering process, as shown in fig. 2 in combination with fig. 5, a first node a, a second node b, and a third node c are sequentially formed at the mounting bracket 30, the front wall cross member 5, the front side member 41, and the like along the direction of the vehicle body side member 1. When the impact beam 7 receives an external collision, its impact force is first resolved to the body side member 1 and the wheel house side member 21 at the first node a. Thereafter, the intermediate- section side sections 501 and 502 are separated from the body side member 1 toward the cowl cross member 5 at the second node b, and are transmitted to the a-pillar inner panel 20 and the other body side member 1. Then, the third node c is broken down from the body side member 1 toward the torsion box 40 and the front side member 41, and is transmitted to the a-pillar inner panel 20 and the first cross member 601.

In view of the above, the present embodiment can form the following various stress transmission paths in the vehicle body front structure:

(1) impact beam 7 → wheel house side beam 21 → a-pillar inner panel 20 → rocker beam 22;

(2) impact beam 7 → body side member 1 → center section side portion 501 → pillar inner panel 20 → rocker beam 22;

(3) impact beam 7 → body side member 1 → torsion box 40 → rocker beam 22;

(4) impact beam 7 → body side member 1;

(5) impact beam 7 → body side member 1 → front side member 41 → first cross member 601.

The embodiment decomposes the huge collision energy from the front of the vehicle step by step through multi-node force transfer. And this design can make individual roof beam body atress of automobile body reduce gradually, and individual roof beam body atress diminishes after the atress decomposes, is more difficult to be destroyed to can increase the crashworthiness that the automobile body just collided, with the living space of protection passenger compartment and passenger's safety.

Of course, in specific applications, the branches can be appropriately increased or decreased in combination with the dimensions such as actual layout requirements and engineering implementation, so as to obtain the required design effect.

Example two

The present embodiment relates to an automobile in which a vehicle body front portion structure in the first embodiment is provided.

In the automobile of the embodiment, the front structure of the automobile body can be correspondingly set and adjusted according to different conditions such as the size, the type and the like of the automobile. Other parts in the automobile can be set by referring to related parts in the existing automobile, and are not described in detail herein.

The automobile of the embodiment can improve the stress transmission and decomposition performance of the front structure of the automobile body through the improvement of the front structure of the automobile body, can improve the bearing capacity of the front cabin framework of the automobile during frontal collision of the automobile, and further can improve the safety of the automobile.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A vehicle body front structure, includes body side member (1), wheel house side member (21) and threshold roof beam (22), its characterized in that still includes preceding wall crossbeam (5), preceding floor crossbeam (6) and front longeron (41), wherein:

the front end of the wheel house boundary beam (21) is connected with the vehicle body longitudinal beam (1), and the rear end of the wheel house boundary beam (21) is connected with the threshold beam (22) through a connecting piece;

the front wall cross beam (5) penetrates through the vehicle body longitudinal beam (1) to be connected with the connecting piece;

the front floor cross beam (6) is connected with the vehicle body longitudinal beam (1), corresponds to the front floor cross beam (6), and is connected with a reinforcing piece (8) between the vehicle body longitudinal beam (1) and the threshold beam (22);

the front longitudinal beam (41) is positioned between the front wall cross beam (5) and the front floor cross beam (6) and arranged on one side of the vehicle body longitudinal beam (1), one end of the front longitudinal beam (41) is connected with the vehicle body longitudinal beam (1), and the other end of the front longitudinal beam is connected with the front floor cross beam (6).

2. The vehicle body front structure according to claim 1, characterized in that:

the front floor beam (6) comprises a first beam (601) and a second beam (602) which are arranged at intervals in the front-back direction;

the front longitudinal beam (41) is connected with the first cross beam (601).

3. The vehicle body front structure according to claim 1, characterized in that:

the front end of the vehicle body longitudinal beam (1) is connected with an anti-collision beam (7).

4. The vehicle body front structure according to claim 3, characterized in that:

the front end of the vehicle body longitudinal beam (1) is provided with a mounting bracket (30) and a supporting bracket (31);

the mounting bracket (30) is connected to the end part of the vehicle body longitudinal beam (1);

the supporting bracket (31) is connected between the mounting bracket (30) and the vehicle body longitudinal beam (1), the mounting bracket (30) and the supporting bracket (31) form a triangular structure in an enclosing mode;

the anti-collision beam (7) and/or the wheel house edge beam (21) are connected to the mounting bracket (30).

5. The vehicle body front structure according to any one of claims 1 to 4, characterized in that:

the front longitudinal beam (41) is arranged on the inner side of the vehicle body longitudinal beam (1);

a torsion box (40) is arranged on the outer side of the vehicle body longitudinal beam (1);

one end of the torsion box (40) is connected with the vehicle body longitudinal beam (1), and the other end of the torsion box is connected with the connecting piece.

6. The vehicle body front structure according to claim 5, characterized in that:

the torsion box (40) and the front side member (41) are connected to the same region of the vehicle body side member (1).

7. The vehicle body front structure according to claim 6, characterized in that:

the connection point of the torsion box (40) and the vehicle body longitudinal beam (1) and the connection point of the front longitudinal beam (41) and the vehicle body longitudinal beam (1) are arranged in a right-faced mode.

8. The vehicle body front structure according to claim 5, characterized in that:

the connecting piece is an A-pillar inner plate (20).

9. The vehicle body front structure according to claim 5, characterized in that:

along the length direction of the vehicle body, the connecting point of the wheel house boundary beam (21) and the vehicle body longitudinal beam (1) is positioned on the front side of the connecting point of the front wall cross beam (5) and the vehicle body longitudinal beam (1); and the number of the first and second groups,

the connecting point of the front longitudinal beam (41) and the torsion box (40) with the vehicle body longitudinal beam (1) is positioned at the rear side of the connecting point of the front wall cross beam (5) with the vehicle body longitudinal beam (1).

10. An automobile, characterized in that: the vehicle body of the automobile has the vehicle body front structure of any one of claims 1 to 9 therein.

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