CN204488953U - Rear portion of car body supporting construction - Google Patents

Abstract

The utility model relates to vehicular field, and disclose a kind of rear portion of car body supporting construction, it comprises first crossbeam and support beam, and first crossbeam is fixed on rear floor, and its two ends are fixedly attached on the left longeron in rear floor and rear floor right vertical beam respectively, support beam comprises left wing, right flank and base, in the left end that the upper end of left wing is fixedly attached to backlight shelf and left panel, on the right-hand member that the upper end of right flank is fixedly attached to backlight shelf and right side coaming plate, left wing is fixedly connected with described base with the lower end of right flank, and base is fixedly connected with described first crossbeam, make rear floor, rear longitudinal floor beam, gusset and backlight shelf form coherent structure, effectively can improve support beam, the local mode of the vehicle body rear part structures such as rear floor, improve the bending Rigidity and strength at body in white rear portion simultaneously, and then improve NVH performance and the anti-impact force of car load.Support beam is V-arrangement, can further improve the structural strength of body tail.

Description

Car body rear support structure

technical field

The utility model relates to the field of vehicles, in particular to a rear support structure of an automobile body.

Background technique

Currently, the support beam structure is placed between the luggage compartment bulkhead and the rear seats. In the area between the luggage compartment partition and the rear seats, there are likely to be poor local modes of the rear floor and poor NVH (Noise, Vibration, Harshness) performance of the vehicle. , the existing supporting beam structure cannot solve these problems. At the same time, the impact capability of the existing support beam against the luggage storage is not good enough, thereby reducing the protection effect on the rear passengers.

In addition, due to the installation requirements of rear seat mounting parts such as rear seats, rear seat belts, and child safety seat hooks, there are problems such as numerous mounting point brackets and low mounting point strength.

Utility model content

The purpose of the utility model is to provide a support structure for the rear part of the automobile body, so as to improve the local mode of the rear part of the vehicle body, and further improve the NVH performance of the whole vehicle.

In order to solve the above-mentioned technical problems, the utility model provides a rear support structure of an automobile body, the support structure comprising:

a first crossbeam, the first crossbeam is fixed on the rear floor, and its two ends are respectively fixedly connected to the left longitudinal beam of the rear floor and the right longitudinal beam of the rear floor;

A support beam, the support beam includes a left wing, a right wing and a base, the upper end of the left wing is fixedly connected to the left end of the rear window sill and the left panel, and the upper end of the right wing is fixedly connected to the right end of the rear window sill and the On the right panel, the lower ends of the left and right wings are fixedly connected to the base, and the base is fixedly connected to the first beam.

In the above-mentioned rear support structure of the automobile body, the distance between the left wing and the right wing gradually decreases from top to bottom, forming a V-shaped structure.

In the above-mentioned support structure for the rear part of the automobile body, the support beam further includes a second beam, the second beam is located above the base, and its two ends are respectively connected to the left wing and the right wing.

In the above-mentioned support structure for the rear part of the vehicle body, the second beam is provided with a luggage compartment trim mounting portion.

In the above-mentioned support structure for the rear part of the automobile body, the second beam is a structure with two ends being large and a middle being small.

In the above-mentioned support structure for the rear part of the automobile body, the front and rear edges of the first crossbeam are fixedly connected to the rear floor, and the middle part of the first crossbeam is bent upward, so that the distance between the middle part of the first crossbeam and the rear floor is A cavity is formed between them.

In the above-mentioned supporting structure for the rear part of the automobile body, the cross-sections of the left and right wings are in the shape of alternating concave and convex.

In the above-mentioned support structure for the rear part of the automobile body, the base includes a base body, the left end of the base body is provided with a left connecting part protruding toward the direction of the left wing, and the right end of the base body is provided with a connecting part protruding toward the right wing. The right connecting part of the direction protrusion;

The base body is fixedly connected to the first beam;

The left connecting part matches the shape of the left wing, and the right connecting part matches the shape of the right wing;

The upper end of the left connecting part is fixedly connected with the lower end of the left wing, and the upper end of the right connecting part is fixedly connected with the lower end of the right wing.

In the above-mentioned support structure for the rear part of the automobile body, the first beam is provided with a seat installation part and a safety belt installation part.

In the above-mentioned support structure for the rear part of the vehicle body, the first beam is provided with a plurality of reinforcing ribs arranged along the front-rear direction of the vehicle body.

The rear support structure of the automobile body provided by the above technical solution is provided with a support structure of a support beam and a first crossbeam, the left wing and the right wing of the support beam are fixedly connected to the rear window sill and the side panel, and the base of the support beam is connected to the first cross beam. A crossbeam is fixedly connected, the first crossbeam is fixed on the rear floor, and its two ends are respectively fixedly connected to the left longitudinal beam of the rear floor and the right longitudinal beam of the rear floor, thereby making the rear floor, the rear floor longitudinal beam, the side wall and the rear window sill The plate forms a coherent structure, which can effectively improve the local modes of the rear body structure such as support beams and rear floors, and at the same time improve the bending and torsional stiffness and strength of the rear part of the body-in-white, thereby improving the NVH performance and impact resistance of the vehicle.

In addition, the distance between the left and right wings of the support beam gradually decreases from top to bottom, forming a V-shaped structure. The V-shaped support beam structure is relatively stable, which can further improve the structural strength of the rear of the vehicle body.

In addition, a second beam is designed between the left and right wings of the support beam, which can strengthen the ability to resist the deformation caused by the impact of the luggage compartment storage on the support beam, thereby improving the protection ability of the rear passengers.

In addition, the relevant installation parts of the rear seats are integrated on the first beam, which effectively improves the strength of each installation point, and at the same time reduces the number of parts required for installation and the fixtures of the production line, saving manufacturing costs.

Description of drawings

Fig. 1 is the front view of a kind of car body rear support structure of the utility model;

Fig. 2 is the assembly diagram of the support structure of the present utility model at the rear part of the vehicle body;

Fig. 3 is the side view of the support beam of the present utility model;

Fig. 4 is the front view of the second beam of the support beam of the present utility model;

Fig. 5 is the front view of the right wing of the support beam of the present utility model;

Fig. 6 is the axonometric view of the right wing of the support beam of the present utility model;

Fig. 7 is the front view of the base of the support beam of the present invention;

Fig. 8 is the axonometric view of the base of the support beam of the present utility model;

Fig. 9 is a front view of the first beam of the present utility model;

Fig. 10 is an axonometric view of the first beam of the present invention.

Among them, 1. The first beam; 11. The safety belt installation part; 12. The rear seat installation part; 13. The child safety seat installation part; 14. The reinforcing rib; 15. The card slot; 2. The support beam; 21. Left wing; 22, right wing; 23, base; 231, base body; 232, left connecting part; 233, right connecting part; 234, first cross beam installation part; 24, second cross beam; 3. Rear floor; 4. Left longitudinal beam of rear floor; 5. Right longitudinal beam of rear floor; 6. Rear window sill; 7. Right side panel.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

As shown in FIG. 1 and FIG. 2 , the utility model provides a rear support structure of an automobile body, and the support structure includes a first beam 1 and a support beam 2 . Wherein, the first beam 1 is fixed on the rear floor 3, and its two ends are respectively fixedly connected to the rear floor left longitudinal beam 4 and the rear floor right longitudinal beam 5; the support beam 2 includes a left wing 21, a right wing 22 and a base 23, and the left wing The upper end of 21 is fixedly connected on the left end of rear window sill plate 6 and the left side panel (not shown in the figure), the upper end of right wing 22 is fixedly connected on the right end of rear window panel 6 and on the right side panel 7, left wing 21 and The lower end of the right wing 22 is fixedly connected to the base 23, and the base 23 is fixedly connected to the first crossbeam 1. The utility model is provided with a supporting structure of the support beam 2 and the first crossbeam 1, so that the rear floor 3, the rear floor longitudinal beam, and the side enclosure It forms a coherent structure with the rear window sill plate 6, which can effectively improve the local modes of the rear structure of the vehicle body such as the support beam and the rear floor, and at the same time improve the bending and torsional stiffness and strength of the rear part of the body-in-white, thereby improving the NVH performance and impact resistance.

The supporting beam 2 of this embodiment adopts the structure that the left wing 21, the right wing 22 and the base 23 are formed separately and then fixed together, which improves the material utilization rate, has good stamping formability, and the welding process is simpler.

Preferably, the left wing 21 and the right wing 22 of this embodiment are fixedly connected to the rear window sill 6 , the left side panel and the right side panel 7 through threaded connection, which is convenient for installation and firm in connection.

The left wing 21 and the right wing 22 of the support beam 2 can be arranged in parallel or at a certain angle. Preferably, in order to improve the stability of the rear structure of the vehicle body, the upper ends of the left wing and the right wing in this embodiment are inclined to the direction away from each other. , so that the distance between the left wing 21 and the right wing 22 gradually decreases from top to bottom, forming a V-shaped structure, as shown in Figures 1 and 3, thus making the overall structure of the support beam 2 V-shaped, V-shaped The support beam structure is relatively stable, which can further improve the structural strength of the rear of the vehicle body.

Further, the support beam 2 of this embodiment also includes a second beam 24, which is located above the base 23, and its two ends are respectively connected to the left wing 21 and the right wing 22, so that the support beam 2 as a whole has an inverted "A" shape. " font structure, as shown in Figure 3. The second beam 24 is arranged between the left wing 21 and the right wing 22, which can increase the rigidity and strength of the support beam 2, effectively improve the local mode of the support beam, and can strengthen the ability to resist the deformation caused by the impact of the luggage compartment storage on the support beam. . Preferably, the second beam 24 is located in the middle of the support beam 2, so that the rigidity and strength of the upper and lower parts of the support beam 2 are improved.

As shown in FIG. 4 , the second crossbeam 24 of this embodiment is provided with a luggage compartment trim installation part 241 , and the luggage compartment trim is connected to the second crossbeam 24 through the luggage compartment trim installation part 241 . Furthermore, the second beam 24 is designed as a structure with two ends larger than the middle, which can increase the connection strength between the left wing and the right wing of the support beam, and further enhance the ability to resist the deformation caused by the storage in the luggage compartment hitting the support beam.

The cross sections of the left wing 21 and the right wing 22 in this embodiment are concave and convex shapes alternately, and the left wing 21 and the right wing 22 are symmetrical structures. Taking the right wing 22 as an example, as shown in Figure 5 and Figure 6, it can be seen that the right wing 22 is composed of a plurality of concave and convex ribs arranged along the upper and lower directions of the vehicle body, and the structural design of these concave and convex ribs can increase the support The strength of beam 2. It should be pointed out that the left wing 21 and the right wing 22 of the support beam can also be arranged in other structures, such as an irregular curved surface structure or a flat plate structure. The cross-sections of the left and right wings are concave and convex, which can further improve the ability to resist the amount of deformation caused by the impact of the luggage compartment on the support beam.

As shown in Figures 7 and 8, the base 23 of this embodiment includes a base body 231, the left end of the base body 231 is provided with a left connecting portion 232 protruding in the direction of the left wing 21, and the right end of the base body 231 is provided with a right wing 22. The right connecting part 233 that protrudes in the direction of the left connecting part 232 matches the shape of the left wing 21, and the right connecting part 233 matches the shape of the right wing 22; the base body 231 is fixedly connected to the first beam 1, and the left connecting part 232 The upper end of the upper end is fixedly connected with the lower end of the left wing 21, and the upper end of the right connecting part 233 is fixedly connected with the lower end of the right wing 22. When the cross-section of the left wing 21 and the right wing 22 of the support beam is a concave-convex shape, then correspondingly, the cross-section of the left connecting part 232 and the right connecting part 233 of the base is also a concave-convex shape, thus ensuring that the left wing 21 , Right wing 22 and left connecting portion 232, right connecting portion 233 are engaged. Preferably, the left wing 21 of the support beam 2 is welded to the left connecting portion 232 of the base 23, and the right wing 22 of the support beam 2 is welded to the right connecting portion 233 of the base 23, so that the left wing 21, the right wing 22 and the base 23 form an integrated structure.

In this embodiment, three first beam installation parts 234 are provided on the base body 231 of the support beam 2, and the three first beam installation parts 234 are distributed in a triangle. 1 threaded connection can further strengthen the strength and rigidity of the support beam 2.

Wherein, as shown in Figure 2, the front and rear edges of the first crossbeam 1 of this embodiment are fixedly connected with the rear floor 3, and the left and right ends of the first crossbeam 1 are respectively connected with the left longitudinal beam of the rear floor and the rear floor The right longitudinal beam is fixedly connected, preferably, the front and rear edges of the first crossbeam 1 are welded to the rear floor 3, and at the same time, the middle part of the first crossbeam 1 is bent upwards, as shown in Figure 10, so that the middle part of the first crossbeam 1 is connected to the A cavity is formed between the rear floor 3, which can strengthen the strength and rigidity of the rear floor 3, effectively improve the local mode of the rear floor, improve the NVH performance of the rear of the vehicle body, and at the same time, support and strengthen the V-shaped support beam In order to connect the support beam, rear floor, rear floor stringer, rear window sill and side wall more coherently.

As shown in Figures 9 and 10, the first beam 1 of this embodiment is provided with a seat installation part and a safety belt installation part 11, wherein the seat installation part includes a rear seat installation part 12 and a child safety seat Mounting parts 13, most of these mounting parts are distributed in the cavity formed between the middle part of the first crossbeam 1 and the rear floor 3 or formed on the welding edge of the first crossbeam 1 and the rear floor 3, and the first crossbeam 1 and the rear floor 3 The rear floor 3 and the rear floor longitudinal beam are fixedly connected, so as to enhance the strength of each installation part. At the same time, the rear seats are installed on the first crossbeam 1, which can reduce the number of parts of the mounting bracket and the fixtures of the production line, which greatly saves the manufacturing cost.

In order to improve the strength of the first crossbeam 1 , a plurality of reinforcing ribs 14 are provided on the first crossbeam 1 in this embodiment. Preferably, the plurality of reinforcing ribs 14 are arranged along the front-rear direction of the vehicle body, and the reinforcing ribs 14 are distributed in the mounting parts of the relevant seat mounting accessories, which can play a role in strengthening the mounting parts and the strength of the first beam 1 .

In addition, in order to reserve an installation space for the fuel tank, the front side of the first beam 1 is further provided with a card slot 15 opening downward.

In the rear supporting structure of a car body provided in this embodiment, the left wing 21, the right wing 22 and the base 23 are welded to form a V-shaped support beam 2, and a second beam 24 is welded between the left wing 21 and the right wing 22, thus forming After the integrated structure, the three first beam installation parts 234 of the base 23 of the support beam 2 are screwed to the first beam 1 to form the support structure of this embodiment. In this support structure, the first beam 1 is welded on the rear floor 3, and its two ends are fixedly connected with the rear floor left longitudinal beam 4 and the rear floor right longitudinal beam 5, and then the left wing 21 and the right wing 22 of the support beam 2 are connected with the rear window sill 6 and the left side panel by screwing It is fixedly connected with the right panel 7 to form a coherent frame structure, which can effectively improve the local modes of the rear of the vehicle body such as the support beam, rear floor, rear floor longitudinal beam, rear side wall, and rear window sill. The bending and torsional rigidity and strength of the rear part of the body improve the NVH performance of the vehicle. The middle part of the left wing 21 and the right wing 22 of the support beam is designed with a second beam 24, which can strengthen the ability to resist the deformation caused by the impact of the luggage compartment storage on the support beam, thereby improving the protection ability of the rear passengers. Relevant installation parts of the rear seats are integrated on the first beam 1, which effectively improves the strength of each installation point, and at the same time reduces the number of parts required for installation and fixtures of the production line, saving manufacturing costs.

The above is only the preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and replacements can also be made. And replacement should also be regarded as the protection scope of the present utility model.

Claims (10)

1. A car body rear support structure, characterized in that the support structure comprises: a first crossbeam, the first crossbeam is fixed on the rear floor, and its two ends are respectively fixedly connected to the left longitudinal beam of the rear floor and the right longitudinal beam of the rear floor; A support beam, the support beam includes a left wing, a right wing and a base, the upper end of the left wing is fixedly connected to the left end of the rear window sill and the left panel, and the upper end of the right wing is fixedly connected to the right end of the rear window sill and the On the right panel, the lower ends of the left and right wings are fixedly connected to the base, and the base is fixedly connected to the first beam. 2. The rear supporting structure of an automobile body according to claim 1, wherein the distance between the left wing and the right wing gradually decreases from top to bottom, forming a V-shaped structure. 3. The automobile body rear support structure according to claim 1, wherein the support beam further comprises a second beam, the second beam is located above the base, and its two ends are respectively connected to the Left wing and right wing connect. 4. The supporting structure for the rear part of the automobile body according to claim 3, characterized in that, the second beam is provided with a luggage compartment decorative panel mounting portion. 5. The rear supporting structure of the automobile body according to claim 3, characterized in that, the second beam is a structure with two ends being large and a middle being small. 6. The rear supporting structure of an automobile body according to claim 1, wherein the front and rear edges of the first cross beam are fixedly connected to the rear floor; the middle part of the first cross beam is bent upwards, so that the first cross beam A cavity is formed between the middle of a beam and the rear floor. 7. The rear supporting structure of an automobile body according to claim 1, characterized in that, the cross-sections of the left and right wings are concave and convex. 8. The automobile body rear support structure according to claim 1, wherein the base comprises a base body, the left end of the base body is provided with a left connecting portion protruding toward the direction of the left wing, and the base The right end of the body is provided with a right connecting part protruding toward the direction of the right wing; The base body is fixedly connected to the first beam; The left connecting part matches the shape of the left wing, and the right connecting part matches the shape of the right wing; The upper end of the left connecting part is fixedly connected with the lower end of the left wing, and the upper end of the right connecting part is fixedly connected with the lower end of the right wing. 9. The rear supporting structure of an automobile body according to claim 1, wherein a seat mounting portion and a safety belt mounting portion are provided on the first beam. 10 . The rear support structure of the automobile body according to claim 1 , wherein the first beam is provided with a plurality of reinforcing ribs arranged along the front-rear direction of the vehicle body. 11 .