Automobile rear floor structure

Abstract

The application discloses a kind of automobile rear floor structures, it is related to the field of automobile body, including floor body and the frame structure of the seat under crossbeam, floor rear crossbeam, floor left front longitudinal beam, floor right front longitudinal beam and floor front crossbeam being laid out on floor body;Floor body is folded to floor front crossbeam in the position of seat under crossbeam and forms step, the both sides of seat under crossbeam lap floor left front longitudinal beam and floor right front longitudinal beam, and with floor front crossbeam and form front end frame structure;The both sides of rear end floor rear crossbeam also lap floor left front longitudinal beam and floor right front longitudinal beam, form rear end frame structure.The application mainly provides platform for the development of the rear floor of electric vehicle, realizes the goal of low manufacturing cost, low design cost;Based on structure itself, process indirectly, production cycle is shorter than traditional process, while increasing the mounting structure of rear seat under crossbeam, the structure is cooperated to form outer frame with longitudinal beam, greatly improve structural rigidity.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile body, in particular to a rear floor structure of an automobile. BACKGROUND

[0002] The rear floor assembly structure of the automobile body is a key structural part of the automobile body, which needs to meet the stiffness and fatigue strength requirements of the whole vehicle function, achieve the grade requirement of corrosion and sealing performance, and has the requirements of collision safety regulations, has the energy transmission path of rear collision, and contributes to the battery pack collision safety structure. With the development trend of new energy vehicles, in order to better adapt to market demand, the demand for various vehicle models is also rapidly developing. Under the condition of meeting market demand, the electric vehicle reduces the manufacturing cost and design cost, simplifies the process, and shortens the production cycle. SUMMARY

[0003] The purpose of the present application is to provide a rear floor structure of an automobile to solve the problems raised in the background art.

[0004] To solve the above technical problems, the present application provides the following technical scheme: a rear floor structure of an automobile, comprising a floor body and a seat under cross beam, a floor rear cross beam, a floor left front longitudinal beam, a floor right front longitudinal beam and a floor front cross beam arranged on the floor body to form a frame structure;

[0005] The floor body is folded at the position of the seat under cross beam to the floor front cross beam to form a step, and the two sides of the seat under cross beam are lapped with the floor left front longitudinal beam and the floor right front longitudinal beam to form a front end frame structure with the floor front cross beam;

[0006] The two sides of the rear end floor rear cross beam are also lapped on the floor left front longitudinal beam and the floor right front longitudinal beam to form a rear end frame structure.

[0007] Preferably, the floor body is spaced apart from the seat under cross beam in the direction close to the floor rear cross beam, and a seat mounting plate is arranged between the floor body and the seat under cross beam, the seat mounting plate is located on the end face of the floor body, and the two ends are connected to the floor left front longitudinal beam and the floor right front longitudinal beam.

[0008] Preferably, the ISOFIX mounting bracket assembly is installed on the seat mounting plate and the floor rear cross beam.

[0009] And a weight reduction hole is formed.

[0010] Preferably, the front end side of the floor body is fixedly connected with the rear section of the left and right door sill inner plate, the rear end side of the floor body is fixedly connected with the left and right rear wheel cover, and the rear end of the floor body is fixedly connected with the rear wall.

[0011] Preferably, the rear wall is used for providing a leakage hole, a fixed connection positioning hole, a process weight reduction hole, a local structure stiffness reinforcing rib, a rear door lock installation, and a rear door sealing installation surface.

[0012] Preferably, seat anti - detachment structures are provided on the inner sides of the left and right rear wheel housings, and left rear bumper mounting brackets are provided on the outer sides of the left and right rear wheel housings.

[0013] Preferably, the cross - section of the left rear bumper mounting bracket is a "channel" - shaped structure.

[0014] Preferably, it further includes a battery pack mounting bracket, and the battery pack mounting bracket is fixed on the front floor cross - beam.

[0015] Preferably, the front floor cross - beam provides mounting positions for the motor controller and the high - voltage box mounting structure.

[0016] Preferably, the floor body is provided with electrophoresis leakage holes, welding connection positioning holes, seat - belt mounting holes, and seat - belt mounting anti - rotation reinforcing ribs.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] The present invention mainly provides a platform for the development of the rear floor of an electric vehicle, achieving the goals of low manufacturing cost and low design cost; in terms of the structure itself, the process is indirect, the production cycle is shorter than the traditional process, and at the same time, the installation structure of the rear - row seat lower cross - beam is added, and this structure and the longitudinal beam together form an outer frame, greatly improving the structural stiffness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the upper - end surface structure of the rear floor of the present invention;

[0020] Figure 2 is a schematic side - view structure diagram of the rear floor of the present invention; [[ID=3L]]

[0021] Figure 3 is a schematic rear - view structure diagram of the rear floor of the present invention;

[0022] Figure 4 is a schematic diagram of the bottom - surface structure of the rear floor of the present invention; [[ID=4u]]

[0023] Figure 5 is a schematic diagram of the frame structure of the rear floor of the present invention. SPECIFIC EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0025] Embodiment: Please refer to Figure 1 and Figure 5As shown in the figure, an automotive rear floor structure includes a floor body 11 and seat cross members 19, rear floor cross members 20, left front floor longitudinal beams 16, right front floor longitudinal beams 17, and front floor cross beams 18 that are arranged on the floor body 11 to form a frame structure;

[0026] The floor body 11 is folded at the position of the seat cross member 19 to the front floor cross beam 18 to form a step, and the seat cross member 19 wraps the folded area of the floor body 11. The seat cross member not only ensures the rigidity of the seat installation but also guarantees the stiffness of the step here, effectively preventing the step from deforming.

[0027] Both sides of the seat cross member 19 overlap with the left front floor longitudinal beam 16 and the right front floor longitudinal beam 17, and form a front-end frame structure with the front floor cross beam 18; Refer to Figure 5 As shown, the frame structure is in the shape of an H structure.

[0028] Both sides of the rear floor cross beam at the rear end also overlap with the left front floor longitudinal beam and the right front floor longitudinal beam, forming a rear-end frame structure.

[0029] There is a seat mounting plate 14 at an interval between the floor body 11 near the rear floor cross beam 20 and the seat cross member 19. The seat mounting plate 14 is located on the end face of the floor body 11 and is connected to the left front floor longitudinal beam 16 and the right front floor longitudinal beam 17 at both ends; It also includes a part of the ISOFIX mounting bracket assembly mounted on the seat mounting plate 14 and another part mounted on the rear floor cross beam 20; And weight reduction holes are provided.

[0030] The front end of the floor body 11 is fixedly connected to the rear section of the left and right door sill inner panels 12 laterally, the rear end of the floor body is fixedly connected to the left and right rear wheel housings 13 laterally, and the rear end of the floor body is fixedly connected to the rear panel 15 transversely;

[0031] The rear panel 15 is used to provide a drain hole, fixed connection positioning holes, process weight reduction holes, local structure stiffness enhancing ribs, rear door lock installation settings, and rear door seal installation surfaces.

[0032] Seat anti-disengagement structures are provided inside the left and right rear wheel housings 13, and a left rear bumper mounting bracket 23 is provided outside the left and right rear wheel housings 13. The cross section of the left rear bumper mounting bracket 23 is in a "channel" shape to meet the stiffness requirements for the installation of the rear bumper skin.

[0033] It also includes a battery pack mounting bracket, which is fixedly mounted on the front floor cross beam; The front floor cross beam provides mounting positions for the motor controller and the high-voltage box installation structure; The floor body is provided with electrophoresis drain holes, welding connection positioning holes, seat belt mounting holes, and seat belt mounting anti-rotation reinforcing ribs.

[0034] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A rear floor structure for automobiles, characterized in that: It includes a floor body, and seat under-beams, a rear floor beam, a left front floor longitudinal beam, a right front floor longitudinal beam, and a front floor beam which are arranged on the floor body to form a frame structure; The floor body is folded to the front floor beam at the position of the seat under-beam to form a step. The seat under-beam wraps the folding area of the floor body. The two sides of the seat under-beam overlap the left front floor longitudinal beam and the right front floor longitudinal beam, and form a front-end frame structure with the front floor beam; The two sides of the rear floor beam at the rear end also overlap the left front floor longitudinal beam and the right front floor longitudinal beam to form a rear-end frame structure; A seat mounting plate is arranged at an interval between the floor body close to the rear floor beam and the seat under-beam. The seat mounting plate is located on the end face of the floor body, and its two ends are connected to the left front floor longitudinal beam and the right front floor longitudinal beam; It also includes an ISOFIX mounting bracket assembly, part of which is mounted on the seat mounting plate and the other part is mounted on the rear floor beam; And weight-reducing holes are provided; The front end side of the floor body is fixedly connected to the rear section of the left and right door sill inner panels, the rear end side of the floor body is fixedly connected to the left and right rear wheel housings, and the rear end of the floor body is transversely fixedly connected to the rear panel.

2. The rear floor structure of a vehicle according to claim 1, characterized by: The rear panel is used to provide a drain hole, fixed connection positioning holes, process weight-reducing holes, local structure stiffness-enhancing ribs, a rear door lock mounting setting, and a rear door sealing mounting surface.

3. The rear floor structure of claim 2, wherein: Seat anti-disengagement structures are arranged on the inner sides of the left and right rear wheel housings, and a left rear bumper mounting bracket is arranged on the outer sides of the left and right rear wheel housings.

4. The rear floor structure of claim 3, wherein: The cross-section of the left rear bumper mounting bracket is a "U" - shaped structure.

5. The rear floor structure of a vehicle according to claim 1, characterized by: It also includes a battery pack mounting bracket which is fixedly mounted on the front floor beam.

6. The rear floor structure of a vehicle according to claim 1, characterized by: The front floor beam provides a mounting position for the motor controller and the high-voltage box mounting structure.

7. The rear floor structure of a vehicle according to claim 1, characterized by: The floor body is provided with electrophoresis leak holes, welding connection positioning holes, seat belt mounting holes, and seat belt mounting anti-rotation reinforcing ribs.

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