CN212401356U

CN212401356U - Lower automobile body structure assembly and car

Info

Publication number: CN212401356U
Application number: CN202020089165.1U
Authority: CN
Inventors: 刘衡; 杨志添; 黄毅; 李伟; 郑颢
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2021-01-26
Anticipated expiration: 2030-01-15

Abstract

The utility model discloses a body structure assembly and car of getting off should get off the body structure assembly and include body and set up well access structure on the body of getting off, well access structure includes first annular power transmission structure, be equipped with the well passageway longeron that vertical direction set up in the first annular power transmission structure, the both ends of well passageway longeron with first annular power transmission structure connects, with first annular power transmission structure cooperation forms two second annular power transmission structure. The utility model provides a lower vehicle body structure assembly has increased and has passed power route, improves car NVH performance.

Description

Lower automobile body structure assembly and car

Technical Field

The utility model relates to an automotive filed especially relates to a lower vehicle body structure assembly and car.

Background

When manufacturing automobiles, consideration is generally given to lightness of the automobile body and improvement of rigidity to improve the safety performance of the automobile and protect the safety of passengers. In order to improve the safety performance of an automobile in the existing design, when a lower automobile body is designed, a force transmission beam structure with enough rigidity is usually designed in a middle channel of the lower automobile body, the design results in larger structural quality of the automobile body, and the existing middle channel structure is designed longitudinally, so that the transverse rigidity of the lower automobile body is often ignored, and the NVH performance of the automobile is poor.

Disclosure of Invention

The embodiment of the utility model provides a lower automobile body structure assembly to automobile body structure quality is great in solving current design, and the channel structure is vertical design in having now, has often neglected lower automobile body transverse rigidity, causes the relatively poor problem of car NVH performance.

The utility model provides a body structure assembly gets off, includes body and sets up down well access structure on the body, well access structure includes first annular power transmission structure, be equipped with the well passageway longeron that longitudinal direction set up in the first annular power transmission structure, the both ends of well passageway longeron with first annular power transmission structure connects, with first annular power transmission structure cooperation forms two second annular power transmission structure.

Preferably, be equipped with the sub vehicle frame mounting box that is used for assembling the sub vehicle frame in the second annular force transmission structure, the both ends of sub vehicle frame mounting box with second annular force transmission structure links to each other.

Preferably, the lower vehicle body comprises an integrally formed lower vehicle body floor and a lower vehicle body front plate, the lower vehicle body front plate is perpendicular to the lower vehicle body floor, and the auxiliary frame mounting box is arranged at the connecting position of the lower vehicle body floor and the lower vehicle body front plate.

Preferably, the first annular force transfer structure comprises a front bulkhead cross member, a front seat cross member and two floor stringers; the two floor longitudinal beams are oppositely arranged in parallel along the longitudinal direction; the front wall plate beam and the front seat beam are oppositely arranged in parallel along the transverse direction; and two ends of the front wall plate beam and the front seat beam are respectively connected with the two floor longitudinal beams.

Preferably, the front wall plate cross beam is arranged on the lower vehicle body front plate, the front seat cross beam is arranged on the lower vehicle body floor, and two ends of the auxiliary frame mounting box are respectively connected with the floor longitudinal beam and the middle channel longitudinal beam.

Preferably, the floor longitudinal beams comprise a front floor longitudinal beam and a middle floor longitudinal beam connected with the front floor longitudinal beam, two ends of the front wall cross beam are connected with the front floor longitudinal beam, and the front seat cross beam is connected with the middle floor longitudinal beam.

Preferably, the number of the middle channel longitudinal beams is two, one end of each of the two middle channel longitudinal beams is connected with the front wall plate cross beam, and the other end of each of the two middle channel longitudinal beams is connected with the front seat cross beam.

Preferably, the subframe mounting box is a rigid subframe mounting box.

An embodiment of the utility model provides a still car, include as above the lower automobile body structure assembly.

Preferably, the vehicle further comprises a subframe; and an auxiliary frame mounting box for assembling an auxiliary frame is arranged in the second annular force transmission structure, and two ends of the auxiliary frame mounting box are connected with the second annular force transmission structure.

An embodiment of the utility model provides a body structure assembly and car down, this body structure assembly's a ring shape biography power structure is closed annular setting down for when the car receives the collision, through the effective transmission of a ring shape biography power structure, reduce the influence of collision power. The first annular force transmission structure is internally provided with a middle channel longitudinal beam arranged in the longitudinal direction, two ends of the middle channel longitudinal beam are connected with the first annular force transmission structure so as to divide the first annular force transmission structure into two closed second annular force transmission structures, and the two second annular assemblies can increase a force transmission path and improve the force transmission efficiency of the lower vehicle body. When the lower vehicle body is collided, the middle channel longitudinal beam divides the first annular force transmission structure into two closed second annular force transmission structures, so that the rigidity of the lower vehicle body is improved, the force generated by collision can be dispersed through the two second annular force transmission structures, and the deformation of the lower vehicle body caused by the concentrated stress of the lower vehicle body when the lower vehicle body is collided is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of a lower vehicle body structure assembly according to an embodiment of the present invention;

fig. 2 is another schematic structural diagram of the lower vehicle body structural assembly according to an embodiment of the present invention.

The specification reference numbers:

10. a lower body; 11. a vehicle body floor is lowered; 12. a lower body front panel; 21. a center channel stringer; 22. an auxiliary frame mounting box; 23. a cowl cross member; 24. a front seat rail; 25. a floor stringer; 251. a front floor stringer; 252. a middle floor stringer.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model provides a lower vehicle body structure assembly, as shown in fig. 1, lower vehicle body structure assembly includes lower vehicle body 10 and sets up the well access structure on lower vehicle body 10, and well access structure includes first annular power transmission structure (not shown in the figure), is equipped with well passageway longeron 21 that vertical direction set up in the first annular power transmission structure, and the both ends and the first annular power transmission structure of well passageway longeron 21 are connected, form two second annular power transmission structure (not shown in the figure) with the cooperation of first annular power transmission structure.

Specifically, the first annular force transmission structure is arranged in a closed annular shape, for example, the first annular force transmission structure may be a force transmission structure in a shape of a closed rectangle, a closed triangle, or a closed ellipse, and the like, and is used for effectively transmitting through the first annular force transmission structure when the automobile is collided, so that the influence of collision force is reduced.

The first annular force transmission structure is internally provided with a middle channel longitudinal beam 21 arranged in the longitudinal direction, two ends of the middle channel longitudinal beam 21 are connected with the first annular force transmission structure so as to divide the first annular force transmission structure into two closed second annular force transmission structures, and the two second annular assemblies can increase a force transmission path and improve the force transmission efficiency of the lower vehicle body. When the lower vehicle body is collided, the middle channel longitudinal beam 21 divides the first annular force transmission structure into two closed second annular force transmission structures, so that the rigidity of the lower vehicle body is improved, the force generated by collision can be dispersed through the two second annular force transmission structures, and the deformation of the lower vehicle body caused by the concentrated stress of the lower vehicle body when the lower vehicle body is collided is avoided.

In one example, as shown in fig. 1, a subframe mounting box 22 for assembling the subframe is provided in the second annular force transmission structure, and both ends of the subframe mounting box 22 are connected to the second annular force transmission structure.

In this example, the both ends of sub vehicle frame mounting box 22 link to each other with second annular power transmission structure, specifically, sub vehicle frame mounting box 22 sets up along the transverse direction, and the both ends of sub vehicle frame mounting box 22 link to each other with second annular power transmission structure respectively to utilize sub vehicle frame mounting box 22 to cut apart the formation two closed third annular power transmission structures once more with second annular power transmission structure, can increase the power transmission route, make the collision force fast dispersion, avoid the atress to concentrate, in order to promote the lateral rigidity of automobile body down, promote car NVH performance. In this example, sub vehicle frame mounting box 22 is used for assembling the sub vehicle frame, can effectively promote overall structure rigidity, when the sub vehicle frame received the collision, can transmit for second annular biography power structure through sub vehicle frame mounting box 22, when the car received frontal collision, also can transmit the impact for the sub vehicle frame through sub vehicle frame mounting box 22 to increase the biography power route, make the impact fast dispersion, avoid the atress to concentrate, in order to reach the purpose that promotes car NVH performance.

In one example, as shown in fig. 1, the lower body 10 includes a lower body floor 11 and a lower body front panel 12 which are integrally formed, the lower body front panel 12 is disposed perpendicular to the lower body floor 11, and a subframe mounting box 22 is provided at a connecting position of the lower body floor 11 and the lower body front panel 12.

In this example, the connection position of the lower body floor 11 and the lower body front panel 12 is arc-shaped, and the subframe mounting box 22 is disposed at the connection position, so that the lateral rigidity of the lower body structure assembly can be enhanced, the safety performance of the automobile can be effectively improved, and the deformation degree of the connection position of the lower body floor 11 and the lower body front panel 12 can be reduced, thereby better protecting the passengers.

In one example, as shown in fig. 1, the first annular force transfer structure includes a dash cross-member 23, a front seat cross-member 24, and two floor stringers 25; the two floor longitudinal beams 25 are oppositely arranged in parallel along the longitudinal direction; the cowl cross member 23 and the front seat cross member 24 are disposed in parallel and opposite to each other in the lateral direction; both ends of the dash cross member 23 and the front seat cross member 24 are connected to two floor side members 25, respectively. In this example, the first annular force transmission structure formed by enclosing the front wall cross beam 23, the front seat cross beam 24 and the two floor longitudinal beams 25 is a closed rectangle, the structure is convenient and simple to manufacture, the stress on each side of the closed rectangle is average, and when the closed rectangle is collided by an external force, the collision force can be quickly dispersed, and the stress concentration is avoided.

In one example, as shown in fig. 1, a dash cross member 23 is provided on the lower vehicle body front panel 12, a front seat cross member 24 is provided on the lower vehicle body floor 11, and both ends of the sub-frame mounting box 22 are connected to the floor side members 25 and the center tunnel side members 21, respectively.

In this example, the dash cross member 23, the center tunnel longitudinal member 21, the floor longitudinal member 25 and the front seat cross member 24 are enclosed to form a rectangular second annular force transmission structure, and the force on each side of the rectangular second annular force transmission structure is even, and meanwhile, the impact force can be transmitted on each side to avoid the stress concentration.

In this example, the sub-frame mounting box 22 is disposed between the floor longitudinal beam 25 and the center channel longitudinal beam 21 to divide the second annular force transmission structure into two closed third annular force transmission structures, for example, the center channel longitudinal beam 21, the sub-frame mounting box 22, the floor longitudinal beam 25 and the front panel cross beam 23 are closed to form one third annular force transmission structure, and the center channel longitudinal beam 21, the sub-frame mounting box 22, the floor longitudinal beam 25 and the front seat cross beam 24 are closed to form another third annular force transmission structure, so that a force transmission path is increased, the force transmission efficiency is improved, and when the vehicle is collided by an external force, the collision force can be rapidly dispersed, and the stress concentration is avoided.

In one example, as shown in fig. 1, the floor frames 25 include a front floor frame 251 and a middle floor frame 252 connected to the front floor frame 251, the front floor frame 251 is connected to both ends of the dash cross member 23, and the middle floor frame 252 is connected to the front seat cross member 24. Specifically, one end of the front floor side member 251 is connected to the dash cross member 23, the other end of the front floor side member 251 is connected to the middle floor side member 252, the middle end of the middle floor side member 252 is connected to the front seat cross member 24, and the front floor side member 251 and the middle floor side member 252, which are connected to each other by the floor side members 25, can reduce the deformation degree of the floor side members and improve the NVH performance of the automobile, for example, when the automobile is impacted, if the impact force is large, the front floor side member 251 is deformed, and because the front floor side member 251 or the middle floor side member 252 is not integrally formed, and the impact force impacts the front floor side member 251, the middle floor side member 252 can be unchanged or less deformed.

In one example, as shown in fig. 1, the number of the center tunnel side members 21 is two, and one end of each of the two center tunnel side members 21 is connected to the dash cross member 23, and the other end is connected to the front seat cross member 24. In this example, the two centre channel stringers 21 divide the first annular force transfer structure into three second annular assemblies, increasing the force transfer path. Two sub vehicle frame mounting boxes 22 are assembled in two symmetrical second annular force transmission structures formed by the middle channel longitudinal beam 21, the front wall plate cross beam 23, the floor longitudinal beam 25 and the front seat cross beam 24 so as to form two third annular force transmission structures in a split mode, and the stress uniformity of the lower vehicle body structure assembly is guaranteed.

When the lower vehicle body is impacted, the subframe mounting box 22 is arranged at the connecting position of the lower vehicle body front plate 12 and the lower vehicle body floor 11, and the subframe mounting box 22 and the second annular force transmission structure are matched to form two third annular force transmission structures, so that the transverse rigidity of the lower vehicle body can be improved, the deformation of the connecting position of the lower vehicle body front plate 12 and the lower vehicle body floor 11 can be avoided, passengers can be protected better, the impact force is transmitted to the front floor longitudinal beam 251 and the middle channel longitudinal beam 21 through the front wall cross beam 23 and then transmitted to the subframe mounting box 22, the front seat cross beam 24 and the middle floor longitudinal beam 252, and the first annular force transmission structure consists of the front wall cross beam 23, the front floor longitudinal beam 251, the front seat cross beam 24 and the middle floor longitudinal beam 252; the second annular force transmission structure consists of a front wall cross beam 23, a front floor longitudinal beam 251, a front seat cross beam 24 and a middle channel longitudinal beam 21; the third annular power transmission structure comprises preceding dash cross beam 23, preceding floor longeron 251, sub vehicle frame mounting box 22 and well passageway longeron 21, or the third annular power transmission structure comprises front seat crossbeam 24, preceding floor longeron 251, sub vehicle frame mounting box 22 and well passageway longeron 21, has increased the power transmission route, improves power transmission efficiency to improve the NVH performance of car.

In one example, as shown in FIG. 1, the subframe mounting box 22 is a rigid material. In this example, the subframe mounting box 22 is a rigid subframe mounting box to improve the rigidity of the lower body.

The utility model also provides an automobile, including the lower automobile body structure assembly as above embodiment. The underground vehicle body structure assembly comprises a lower vehicle body 10 and a middle channel structure arranged on the lower vehicle body 10, wherein the middle channel structure comprises a first annular force transmission structure, a middle channel longitudinal beam 21 arranged in the longitudinal direction is arranged in the first annular force transmission structure, and two ends of the middle channel longitudinal beam 21 are connected with the first annular force transmission structure and are matched with the first annular force transmission structure to form two second annular force transmission structures.

In one example, as shown in FIG. 1, the vehicle further includes a subframe (not shown); and a sub-frame mounting box 22 for assembling a sub-frame is assembled in the second annular force transmission structure, and two ends of the sub-frame mounting box 22 are connected with the second annular force transmission structure. It will be appreciated that the subframe may transmit impact forces to the subframe mounting box 22 and thus to the front floor rail 251 and center tunnel rail 21 when impacted to dissipate the impact forces and avoid stress concentrations.

The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a lower automobile body structure assembly, is in including lower automobile body and setting well access structure on the lower automobile body, its characterized in that, well access structure includes first annular biography power structure, be equipped with the well passageway longeron that longitudinal direction set up in the first annular biography power structure, the both ends of well passageway longeron with first annular biography power structural connection, with first annular biography power structural cooperation forms two second annular biography power structures.

2. The lower body structure assembly of claim 1, wherein a subframe mounting box for mounting a subframe is provided in the second annular force transfer structure, and both ends of the subframe mounting box are connected to the second annular force transfer structure.

3. The lower body assembly according to claim 2, wherein the lower body includes an integrally formed lower body floor and a lower body front panel, the lower body front panel is disposed perpendicular to the lower body floor, and the subframe mounting box is disposed at a connecting position of the lower body floor and the lower body front panel.

4. The lower body structure assembly of claim 3, wherein the first annular force transfer structure comprises a front dash cross-member, a front seat cross-member, and two floor stringers; the two floor longitudinal beams are oppositely arranged in parallel along the longitudinal direction; the front wall plate beam and the front seat beam are oppositely arranged in parallel along the transverse direction; and two ends of the front wall plate beam and the front seat beam are respectively connected with the two floor longitudinal beams.

5. The lower body structure assembly according to claim 4, wherein the cowl cross member is provided on the lower body front panel, the front seat cross member is provided on the lower body floor, and both ends of the sub-frame mounting box are connected to the floor side member and the center tunnel side member, respectively.

6. The lower vehicle body structural assembly of claim 4, wherein the floor rails include a front floor rail and a middle floor rail connected to the front floor rail, wherein the front cowl cross member is connected at both ends to the front floor rail, and wherein the front seat cross member is connected to the middle floor rail.

7. The lower vehicle body structural assembly of claim 5, wherein the number of center tunnel stringers is two, and two of the center tunnel stringers are connected at one end to the cowl cross member and at the other end to the front seat cross member.

8. The lower body structure assembly of claim 2, wherein the subframe mounting box is a rigid subframe mounting box.

9. An automobile, characterized by comprising a lower body structure assembly according to any one of claims 1 to 8.

10. The vehicle of claim 9, further comprising a subframe; and an auxiliary frame mounting box for assembling an auxiliary frame is arranged in the second annular force transmission structure, and two ends of the auxiliary frame mounting box are connected with the second annular force transmission structure.