CN209870061U - A car rear door structure - Google Patents

Abstract

The utility model relates to an automobile back door structure, which comprises a top cover outer panel, a D-pillar inner panel and a cover body, the top cover outer panel and the cover body are connected by a hinge, and a The interconnected reinforcing narrow ribs are connected with the hinge reinforcing plate, and the hinge reinforcing plate is provided with a lower concave portion, and the reinforcing narrow rib is connected with the lower concave portion to form a closed load-bearing cavity. The utility model solves the problem that during the use of the prior art, the weight of the entire vehicle is increased and the D-pillar reinforcement is difficult to form because the upper plate of the rear cross beam and the D-pillar reinforcement plate have the same width and both extend to the position of the side plate of the top cover outer plate. The difficulty of welding increases, and the problem of insufficient strength of the hinge installation point of the back door is prone to occur. A car back door structure is provided, which optimizes the structure and installation relationship of the hinge reinforcement plate, and greatly reduces the width of the reinforcement narrow rib. The overall quality and manufacturing difficulty of the car are greatly reduced.

Description

A car rear door structure

technical field

The utility model relates to the technical field of automobiles, in particular to an automobile back door structure.

Background technique

With the rapid development of my country's automobile industry, people's requirements for car shape and function are constantly improving, and the structure of the car's back door affects the performance of the back door. For example, the Chinese publication number is CN202294193U, the publication date is July 4, 2012, and the name of the invention is the back door of an automobile. The application discloses a back door of an automobile. The assembly is mounted to the body rear pillar. The automobile back door of the utility model adopts the way of opening the side door to install the door panel assembly on the rear pillar of the vehicle body, so that the closing of the back door is more comfortable, the gap is small, the fit is tighter, and the opening and closing space of 180° is easy to realize. The space is more carefree. In addition, a car rear door structure is shown in Figure 2, the top cover outer panel 2 and the D-pillar inner panel 5 are connected by the rear cross member upper plate 3 and the D-pillar reinforcement plate 4, the rear cross beam upper plate 3 and the D-pillar The pillar reinforcement plates 4 have the same width and extend to the side of the top cover outer panel 2. The cross-sections of the rear cross member upper panel 3 and the D-pillar reinforcement plate 4 are convex arc-shaped, and the gap between the top cover outer panel 2 and the cover body 7 is Connection via common hinge 6. In the process of use, it is easy to have the problem of insufficient strength of the hinge installation point of the back door. In addition, since the upper panel 3 of the rear cross member and the reinforcement panel 4 of the D-pillar are equal in width, they both extend to the position of the side panel 2 of the outer panel of the roof, resulting in a The increase in mass makes it difficult to form the D-pillar reinforcement plate and increase the difficulty of welding, which in turn leads to a decline in the overall quality and quality of the car.

Contents of the invention

The utility model solves the problem that during the use of the prior art, the weight of the entire vehicle is increased and the D-pillar reinforcement is difficult to form because the upper plate of the rear cross beam and the D-pillar reinforcement plate have the same width and both extend to the position of the side plate of the top cover outer plate. The difficulty of welding increases, and the problem of insufficient strength of the hinge installation point of the back door is prone to occur. A car back door structure is provided, which optimizes the structure and installation relationship of the hinge reinforcement plate, and greatly reduces the width of the reinforcement narrow rib. The overall quality and manufacturing difficulty of the car are greatly reduced.

The concrete technical scheme of the utility model is:

An automobile back door structure, comprising a top cover outer panel, a D-pillar inner panel and a cover body, the top cover outer panel and the cover body are connected by a hinge, and the top cover outer panel and the cover body are provided with interconnected reinforcement The narrow rib is connected with the hinge reinforcement plate, and the hinge reinforcement plate is provided with a lower concave portion, and the narrow reinforcement rib is connected with the lower concave portion to form a closed load-bearing cavity. The hinge is mainly used to connect the outer panel of the top cover with the cover body, the hinge reinforcement plate and the narrow reinforcing rib are mainly used to connect the outer panel of the top cover with the cover body, and can increase the strength of the hinge installation point, which is beneficial to the cover body. For the support of the hinge, a lower concave part is arranged on the hinge reinforcement plate, and the reinforcing narrow rib is connected with the lower concave part to form a sealed load-bearing cavity. The load-bearing cavity can effectively bear the force of the downward pressure, and effectively improve the stress condition of the hinge installation point of the back door. In the prior art, the upper panel of the rear cross member and the D-pillar reinforcement plate have the same width, and they both extend to the position of the side panel of the roof outer panel, which can greatly reduce the weight of the whole vehicle. Compared with the D-pillar reinforcement plate with complicated processing , the manufacture and installation of the hinge reinforcement plate is more convenient, the structure and installation relationship of the hinge reinforcement plate are optimized, the width of the reinforcement narrow rib is greatly reduced, and the overall quality and manufacturing difficulty of the car are greatly reduced; and it is beneficial to improve the rear door hinge Insufficient strength of the installation point.

As a preferred solution of the above solution, the ratio of the width of the narrow reinforcement rib to the width between the hinge reinforcement plates is 1:10.8~16.5. The weight is effectively reduced, and it is beneficial to strengthen the connection between the narrow rib and the hinge reinforcement plate.

As a preferred solution of the above solution, the reinforcing narrow rib is in an upward convex shape. The upper convex shape is good for load bearing and improves the stress of the narrow ribs, and it is arranged opposite to the lower convex part to form a circular load-bearing cavity, which is beneficial to improve the insufficient strength of the hinge installation point of the back door.

As a preferred solution of the above solution, the hinge includes a connecting shaft, a hinge seat fixedly connected to the outer panel of the top cover, and a hinge body fixedly connected to the cover body, and the hinge seat and the hinge body are connected through the connecting shaft. The hinge seat is arranged on the outer plate of the top cover, the hinge body is arranged on the cover body, and the connecting shaft is mainly used for connecting the hinge seat and the hinge body.

As a preferred solution of the above solution, the number of hinges between the top cover outer panel and the cover body is two. The number of hinges between the top cover outer plate and the cover body is two, which is conducive to bearing load and maintaining balance and stability.

As a preferred solution of the above solution, a cover body, a hinge, and a top cover outer plate are sequentially arranged at the joints of the hinge, the top cover outer plate, and the cover body from top to bottom. Ensure the reliability of the installation.

As a preferred solution of the above solution, both the reinforcing narrow rib and the hinge reinforcing plate extend directly below the hinge. Both the narrow reinforcement rib and the hinge reinforcement plate extend directly below the hinge, so that the narrow reinforcement rib and the hinge reinforcement plate can bear the force of the hinge installation point of the back door, effectively reducing the problem of insufficient strength of the hinge installation point of the back door.

As a preferred solution of the above solution, the outer panel of the top cover, the narrow reinforcement rib, the hinge reinforcement panel and the inner panel of the D-pillar are all fixed by welding. The top cover outer panel, reinforcing narrow rib, hinge reinforcement panel and D-pillar inner panel are all fixed by welding. The welding operation is convenient and the connection is reliable.

The beneficial effects of the utility model are:

1. The hinge of this utility model is mainly used to connect the top cover outer plate with the cover body, and the hinge reinforcement plate and reinforced narrow rib are mainly used to connect the top cover outer plate with the cover body, and can increase the strength of the hinge installation point , which is conducive to the support of the cover and the hinge, the hinge reinforcement plate is provided with a lower concave part, and the reinforcing narrow rib is connected with the lower concave part to form a sealed load-bearing cavity. The load-bearing cavity can effectively bear the force of the downward pressure, and effectively improve the stress condition of the hinge installation point of the back door. In the prior art, the upper panel of the rear cross member and the D-pillar reinforcement plate have the same width, and they both extend to the position of the side panel of the roof outer panel, which can greatly reduce the weight of the whole vehicle. Compared with the D-pillar reinforcement plate with complicated processing , the manufacture and installation of the hinge reinforcement plate is more convenient, the structure and installation relationship of the hinge reinforcement plate are optimized, the width of the reinforcement narrow rib is greatly reduced, and the overall quality and manufacturing difficulty of the car are greatly reduced; and it is beneficial to improve the rear door hinge Insufficient strength of the installation point.

2. An airtight load-bearing cavity is formed between the reinforced narrow rib and the lower concave part of the utility model. The load-bearing cavity can effectively improve the stress of the car back door structure and increase the load-bearing strength of the car body;

3. The utility model can reduce the original upper plate of the rear beam with a thickness of 1.2mm to a hinge reinforcement plate with a back height of 0.8, and the width of the original D-pillar reinforcement plate is far greater than the width of the narrow reinforcement rib, which increases the hinge installation structure. Strength, greatly reducing the weight of the vehicle.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the prior art structural representation of the utility model;

Fig. 3 is a schematic diagram of the hinge installation structure of the utility model;

Fig. 4 is a three-dimensional schematic view of the hinge of the present invention;

Fig. 5 is a partially enlarged view of part A of Fig. 3 of the present invention.

In the figure: 1. Body, 2. Roof outer panel, 3. Rear beam upper panel, 4. D-pillar reinforcement panel, 5. D-pillar inner panel, 6. Ordinary hinge, 7. Cover body, 8. Reinforced narrow Rib, 9, hinge reinforcement plate, 10, hinge, 11, hinge seat, 12, hinge body, 13, connecting shaft, 14, lower recess.

Detailed ways

Below through specific embodiment, in conjunction with accompanying drawing, the utility model is further described.

Example 1:

As shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 5, a car back door structure includes a body 1 and a cover body 7, and the body 1 includes a top cover outer panel 2, a D-pillar inner panel 5, and a reinforcing narrow rib 8 And hinge reinforcement plate 9. The top cover outer panel 2 and the cover body 7 are connected by hinges 10, and the top cover outer panel 2 and the D-pillar inner panel 5 are sequentially provided with reinforcing narrow ribs 8 and hinge reinforcement plates 9, and the top cover outer panel 2 and the narrow reinforcement rib 8 are fixed by welding, the hinge reinforcement plate 9 and the narrow reinforcement rib 8 are fixed by welding, the D-pillar inner panel 5 and the hinge reinforcement plate 9 are attached to each other, and the ends are fixed by welding . The hinge reinforcing plate 9 is provided with a lower concave portion 14, and the reinforcing narrow rib 8 is connected with the lower concave portion 14 to form a closed load-bearing cavity. Reinforcing narrow ribs 8 are convex. The width of the reinforcing narrow rib 8 is 1:10.8~16.5 compared with the width between the hinge reinforcing plates 9 . In this embodiment, the ratio of the width of the reinforcing narrow rib 8 to the width of the hinge reinforcing plate 9 is 1:15. The thickness of the reinforcing narrow rib 8 is slightly thinner than that of the hinge reinforcing plate 9, and the centerline of the reinforcing narrow rib 8 and the centerline of the hinge 10 are on the same positive plane. The upward convex arc shape of the reinforcing narrow rib 8 is arranged opposite to the hinge reinforcing plate 9 and forms a load-bearing cavity. The hinge 10 includes a connecting shaft 13 , a hinge base 11 fixedly connected to the top cover outer panel 2 and a hinge body 12 fixedly connected to the cover body 7 , the hinge base 11 and the hinge body 12 are connected through the connecting shaft 13 . The number of hinges between the top cover outer panel 2 and the cover body 7 is two. At the junction of the hinge 10, the top cover outer panel 2 and the cover body 7, the cover body 7, the hinge 10 and the top cover outer panel 2 are sequentially arranged from top to bottom. Both the reinforcing narrow rib 8 and the hinge reinforcing plate 9 extend to just below the hinge 10 .

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent transformations made to the above embodiments according to the technical essence of the present utility model still belong to this utility model. The protection scope of the utility model technical solution.

Claims (8)

1. A kind of automobile rear door structure, comprises top cover outer panel, D pillar inner panel and cover body, is characterized in that, is connected by hinge between top cover outer panel and cover body, between top cover outer panel and cover body There are interconnected reinforcing narrow ribs and hinge reinforcing plates, and the hinge reinforcing plate is provided with a lower concave portion, and the reinforcing narrow ribs are connected with the lower concave portions to form a closed load-bearing cavity. 2. A car back door structure according to claim 1, characterized in that the ratio of the width of the reinforcing narrow rib to the width between the hinge reinforcing plates is 1:10.8~16.5. 3. The automobile back door structure according to claim 1, characterized in that, the reinforcing narrow ribs are in an upwardly convex shape. 4. A kind of automobile back door structure according to claim 1, 2 or 3, characterized in that the hinge comprises a connecting shaft, a hinge seat fixedly connected with the top cover outer plate and a hinge body fixedly connected with the cover body, The hinge base is connected with the hinge body through a connecting shaft. 5 . The automobile back door structure according to claim 4 , wherein the number of hinges between the top cover outer panel and the cover body is two. 5 . 6. A car back door structure according to claim 1, 2 or 3, characterized in that, at the junction of the hinge, the top cover outer panel and the cover body, a cover body and a hinge are arranged sequentially from top to bottom. and roof panels. 7 . The automobile rear door structure according to claim 6 , wherein both the reinforcing narrow rib and the hinge reinforcing plate extend directly below the hinge. 7 . 8. A car back door structure according to claim 1, 2 or 3, characterized in that the outer panel of the top cover, the reinforcement narrow rib, the hinge reinforcement plate and the inner panel of the D-pillar are all fixed by welding.