Automobile rear floor assembly and automobile thereof

Abstract

The utility model relates to the technical field of vehicles, in particular to an automobile rear floor assembly and an automobile with the same. The utility model discloses an automobile rear floor assembly. The automobile rear floor assembly comprises a rear floor; the rear longitudinal beam rear section is used for being connected with a rear longitudinal beam, and the rear longitudinal beam rear section is detachably connected to the rear portion of the rear floor in the length direction of the automobile from the rear portion to the front portion of the automobile. In the width direction of the automobile, a first induction crumple structure is arranged on the side face of the end, close to the rear floor, of the rear longitudinal beam rear section, and the first induction crumple structure extends on the side face in the vertical direction of the automobile. An automobile comprises an automobile rear floor assembly. According to the application, the action force can be prevented from being continuously transmitted to the structure in the direction of the driving cabin (namely continuously transmitted to the rear floor), so that the integrity of the structure of the riding part of a driver and passengers is effectively ensured, and the safety performance of the riding area of the driver and passengers in the vehicle is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly to an automobile rear floor assembly and an automobile thereof. Background Art

[0002] The structure of the automobile rear floor plays a crucial role in the force transmission of the vehicle body and the safety collision performance, and the superiority of the collision performance directly affects the driving safety factor.

[0003] Currently, the front and rear force transmission of the automobile rear floor mainly relies on the rear floor longitudinal beam and the rear floor. When a rear collision occurs to the vehicle, the rear floor longitudinal beam and the rear floor are subjected to relatively large forces, which easily causes serious bending of the rear floor longitudinal beam, and then invades the driver's cab and poses a serious safety threat to the passengers. Utility Model Content

[0004] Based on this, it is necessary to provide an automobile rear floor assembly and an automobile thereof that can improve driving safety.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] An automobile rear floor assembly, the automobile rear floor assembly comprising:

[0007] A rear floor;

[0008] A rear section of the rear longitudinal beam, configured to connect to the rear longitudinal beam, and, along the length direction of the automobile and from the rear to the front direction of the automobile, the rear section of the rear longitudinal beam is detachably connected to the rear of the rear floor;

[0009] Wherein, along the width direction of the automobile, a first induced collapse structure is provided on the side surface of the end of the rear section of the rear longitudinal beam close to the rear floor, and the first induced collapse structure extends along the vertical direction of the automobile on the side surface.

[0010] It can be understood that in the present application, by providing the first induced collapse structure on the rear section of the rear longitudinal beam and based on the positional relationship between the rear section of the rear longitudinal beam and the rear floor; when a rear collision occurs to the automobile, due to the existence of the first induced collapse structure, the rear section of the rear longitudinal beam will first deform and fail at this position to release the collision energy, thereby preventing the acting force from continuing to be transmitted to the structure in the direction of the driver's cab (that is, preventing the acting force from continuing to be transmitted to the rear floor direction), so as to effectively ensure the integrity of the structure of the part where the passengers are located, and further improve the safety performance of the passenger area inside the vehicle.

[0011] In one embodiment, the first induced collapse structure is configured to be a recessed groove and / or a hole formed on the side surface. With such a setting, not only the structure is simple but also the processing is convenient.

[0012] In one embodiment, the strength of the rear floor gradually increases along the length of the vehicle and from the rear to the front of the vehicle.

[0013] It is understandable that the strength of the rear floor is gradually increased from the rear to the front of the car, so that the structural strength of the rear floor away from the rear longitudinal beam is greater than the structural strength of the rear section close to the rear longitudinal beam. In this way, when a rear collision occurs, the structural strength of the front part of the rear floor is higher, and the structural strength of the rear part of the rear floor is weaker. In this way, the rear part of the rear floor deforms first to absorb energy and release the collision energy. In this way, the rear floor near one end of the driving and passenger area can be prevented from deforming and invading the driving and passenger cabin as much as possible, further improving the safety of the passenger area.

[0014] In one embodiment, the rear floor includes a floor longitudinal beam, a floor cross beam, a wheel cover and a floor panel; the floor longitudinal beam is connected to the rear section of the rear longitudinal beam, the floor cross beam is connected to the floor longitudinal beam, and the wheel cover is connected to the floor longitudinal beam; wherein the strength of the floor longitudinal beam gradually increases along the length direction of the vehicle and from the rear to the front direction of the vehicle.

[0015] In one embodiment, a plurality of reinforcing ribs are disposed inside the floor longitudinal beam, the plurality of reinforcing ribs are arranged in a staggered manner along the length direction of the vehicle, and the number of reinforcing ribs located at the rear of the vehicle is relatively smaller than the number of reinforcing ribs located at the front of the vehicle.

[0016] It is understandable that the greater the number of reinforcements, the higher the structural strength will be. Therefore, the strength of the floor longitudinal beam is gradually increased from the rear to the front of the car through the number and layout of reinforcements.

[0017] In one of the embodiments, a second collapse inducing structure is provided on a side surface of the floor longitudinal beam.

[0018] It can be understood that the second inducing crush structure is set on the side of the floor longitudinal beam, and combined with the position of the first inducing crush structure; when the car collides from behind, the first inducing crush structure absorbs energy first, and then the position of the second inducing crush structure is closer to the front of the car than the position of the first inducing crush structure, so that after the first inducing crush structure absorbs energy, the second inducing crush structure will continue to absorb energy, thereby avoiding the force from being transmitted to the front of the floor longitudinal beam and avoiding the deformation of the front of the rear floor longitudinal beam, which is equivalent to the second inducing crush structure as the second line of defense. Such a setting can further effectively ensure the integrity of the structure of the driver and passenger seat, thereby improving the safety performance of the driver and passenger seat area in the car.

[0019] In one embodiment, the second collapse inducing structure is configured as a recessed groove and / or a hole.

[0020] In one embodiment, a baffle and a third induced collapse structure are also provided on the floor longitudinal beam. A rib is provided on the baffle. Along the length direction of the vehicle, the third induced collapse structure is located behind the baffle relative to the vehicle.

[0021] It can be understood that the floor longitudinal beam is to be connected to the subframe (i.e., the rear suspension). By providing the baffle and the third induced collapse structure and combining their positional relationships, when a rear collision occurs to the vehicle, when the acting force is transmitted to the third induced collapse structure, under the induction of the third induced collapse structure, the floor longitudinal beam will deform and fail at this position and absorb energy. In this way, it can effectively prevent the subframe from moving forward in the vehicle and hitting or invading the components in front of the vehicle (such as the battery pack, etc.), thus causing damage to the components (battery pack) in front. At the same time, the baffle is behind the third induced collapse structure and is used to block the structure from continuing to invade forward in the vehicle, thereby protecting the components in front of the vehicle.

[0022] In one embodiment, a first connecting rib is provided on the wheelhouse; and / or, a second connecting rib is provided between the floor panel and the floor cross beam.

[0023] It can be understood that by providing the first connecting rib, the local structural strength of the wheelhouse can be enhanced and the torsional stiffness of the whole vehicle can be satisfied, reducing the probability of deformation during a rear collision; and / or, by providing the second connecting rib, the structural strength between the floor panel and the floor cross beam can be effectively enhanced, increasing the overall stability of the structure.

[0024] The present application also provides the following technical solutions:

[0025] A vehicle, comprising the vehicle rear floor assembly described in any one of the above embodiments.

[0026] Compared with the prior art, the vehicle rear floor assembly is provided with a first induced collapse structure on the rear section of the rear longitudinal beam, and based on the positional relationship between the rear section of the rear longitudinal beam and the rear floor; when a rear collision occurs to the vehicle, due to the existence of the first induced collapse structure, the rear section of the rear longitudinal beam will first deform and fail at this position to release the collision energy, thereby preventing the acting force from continuing to be transmitted to the structure in the direction of the cockpit (i.e., continuing to be transmitted to the rear floor direction). In this way, the integrity of the structure of the part where the driver and passengers are located is effectively guaranteed, and further the safety performance of the riding area of the vehicle occupants is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic three-dimensional structure diagram of one perspective of the automotive rear floor assembly provided by the present application.

[0029] Figure 2 It is a schematic side view of the automotive rear floor assembly provided by the present application.

[0030] Figure 3 It is a schematic three-dimensional structure diagram of another perspective of the automotive rear floor assembly provided by the present application.

[0031] Figure 4 It is a schematic three-dimensional structure diagram of yet another perspective of the automotive rear floor assembly provided by the present application.

[0032] Figure 5 It is a schematic three-dimensional structure diagram of still another perspective of the automotive rear floor assembly provided by the present application.

[0033] The reference numerals of each component are as follows:

[0034] 100, automotive rear floor assembly; 10, rear floor; 11, floor longitudinal beam; 111, reinforcing rib; 112, second induced collapse structure; 113, baffle; 114, third induced collapse structure; 115, retaining rib; 12, floor cross beam; 13, wheelhouse; 131, first connecting rib; 14, floor panel; 141, second connecting rib; 20, rear section of the rear longitudinal beam; 21, side; 30, first induced collapse structure. Detailed Embodiments

[0035] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will provide a detailed description of the specific embodiments of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0036] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there can be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are only for illustrative purposes and do not represent the only implementation.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In this application, unless otherwise clearly specified and defined, the first feature may be in direct contact with the second feature "on" or "under" the second feature, or the first feature and the second feature may be in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on top of" the second feature may be directly above or obliquely above the second feature, or only indicate that the first feature is at a higher horizontal level than the second feature. The first feature "below", "beneath" and "underneath" the second feature may be directly below or obliquely below the second feature, or only indicate that the first feature is at a lower horizontal level than the second feature.

[0039] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the related listed items.

[0040] As Figures 1 to 5 , this application provides an automotive rear floor assembly 100. Along the length direction x of the vehicle, the automotive rear floor assembly 100 is located at the rear end position of the vehicle and is used to carry various structures at the rear end position of the vehicle.

[0041] Specifically, referring to Figure 1 and Figure 2The rear floor assembly 100 of the automobile includes a rear floor 10 and a rear longitudinal beam rear section 20. The rear longitudinal beam rear section 20 is used to connect the rear longitudinal beam along the length direction x of the automobile and from the rear to the front of the automobile, and the rear longitudinal beam rear section 20 is detachably connected to the rear of the rear floor 10. In the width direction y of the automobile, a first inducing crush structure 30 is arranged on the side surface 21 of the rear longitudinal beam rear section 20 near one end of the rear floor 10, and the first inducing crush structure 30 extends along the vertical direction z of the automobile on the side surface 21. In this way, when the automobile is in a rear collision (for example, rear-end collision or collision with the rear of the automobile), due to the existence of the first inducing crush structure 30, the rear longitudinal beam rear section 20 will first deform and fail to release the collision energy after being subjected to force at this location, thereby preventing the force from continuing to be transmitted to the structure in the direction of the rear longitudinal beam or the direction of the cockpit, so as to effectively ensure the integrity of the structure of the driver and passenger seat, thereby improving the safety performance of the driver and passenger seat area in the vehicle.

[0042] In one embodiment, see Figure 2 , along the length direction x of the car and from the rear to the front of the car, the strength of the rear floor 10 is gradually increased. It can be understood that from the rear to the front of the car, the strength of the rear floor 10 is gradually increased, so that the structural strength of the rear floor 10 away from the rear section 20 of the rear longitudinal beam is greater than the structural strength of the rear floor 10 close to the rear section 20 of the rear longitudinal beam. In this way, when a rear collision occurs, the structural strength of the front position of the rear floor 10 is higher, and the structural strength of the rear part of the rear floor 10 is weaker. In this way, the rear part of the rear floor 10 deforms first to absorb energy and releases the collision energy. In this way, the rear floor 10 close to one end of the driving and riding area can be prevented from deforming and invading the driving and riding cabin as much as possible, further improving the safety of the riding area.

[0043] Specifically, see Figures 3 to 5 The rear floor 10 includes a floor longitudinal beam 11, a floor cross beam 12, a wheel cover 13 and a floor panel 14; the floor longitudinal beam 11 is connected to the rear section 20 of the rear longitudinal beam, the floor cross beam 12 is connected to the floor longitudinal beam 11, and the wheel cover 13 is connected to the floor longitudinal beam 11; wherein, along the length direction x of the vehicle and from the rear to the front direction of the vehicle, the strength of the floor longitudinal beam 11 gradually increases.

[0044] Here, two floor longitudinal beams 11 are provided, that is, one is arranged on each side along the width direction of the automobile. In addition, there are two corresponding rear longitudinal beam rear sections 20 or rear longitudinal beams. Each floor longitudinal beam 11 is connected to a corresponding rear longitudinal beam rear section 20.

[0045] There are also two floor cross beams 12, and the two floor cross beams 12 are arranged between the two floor longitudinal beams 11, and the two ends of each floor cross beam 12 are correspondingly connected to the two floor longitudinal beams 11. In this way, the two floor cross beams 12 and the two floor longitudinal beams 11 form a "mouth" shape, so that the overall structural strength of the rear floor 10 is effectively enhanced.

[0046] The wheel housings 13 are also provided in two, each wheel housing 13 corresponding to a floor longitudinal beam 11 and being mounted on the floor longitudinal beam 11 for shielding the tires.

[0047] In one embodiment, referring to Figure 1 and Figure 2 , a plurality of reinforcing ribs 111 are provided inside the floor longitudinal beam 11. The plurality of reinforcing ribs 111 are arranged staggeredly along the length direction x of the vehicle, and the number of the reinforcing ribs 111 located at the rear of the vehicle is relatively less than the number of the reinforcing ribs 111 located at the front of the vehicle. Here, the function of the reinforcing ribs 111 is to strengthen the structural strength of the floor longitudinal beam 11, and the number of the reinforcing ribs 111 located at the rear of the vehicle is relatively less than the number of the reinforcing ribs 111 located at the front of the vehicle. At this time, the structural strength of the floor longitudinal beam 11 gradually increases from the rear to the front of the vehicle. Such a setting can ensure that when a rear collision occurs, the rear part of the vehicle deforms and absorbs energy first, and the front part plays a supporting role to avoid deformation.

[0048] Here, the way to achieve that the strength of the floor longitudinal beam 11 gradually increases along the length direction x of the vehicle and from the rear to the front of the vehicle can also be combined with the setting density of the reinforcing ribs 111. For example, the density of the reinforcing ribs 111 located in front of the floor longitudinal beam 11 is greater than the density of the reinforcing ribs 111 located at the rear. In this way, it is achieved jointly by the density and the number.

[0049] Furthermore, as Figure 1 and Figure 2 shown, a second induced collapse structure 112 is provided on the side surface of the floor longitudinal beam 11. Here, the second induced collapse structure 112 is provided on the side surface of the floor longitudinal beam 11 and is combined with the position of the first induced collapse structure 30; when the vehicle undergoes a rear collision, first, the first induced collapse structure 30 absorbs energy, and then the position of the second induced collapse structure 112 is relatively more forward than the position of the first induced collapse structure 30. In this way, the floor longitudinal beam 11 will deform and fail first at this position to release the collision energy, thereby avoiding the force from being transmitted forward to the floor longitudinal beam 11 and preventing the front of the rear floor longitudinal beam 11 from being deformed by force, that is, the second induced collapse structure 112 serves as a second line of defense. Such a setting can further effectively ensure the integrity of the structure of the part where the driver and passengers are located, and further improve the safety performance of the riding area inside the vehicle.

[0050] Here, the second induced collapse structure 112 is configured to form a recessed groove and / or hole on the side surface. Such a setting is not only simple in structure but also convenient for processing. In this embodiment, the second induced collapse structure 112 is configured as a groove.

[0051] Furthermore, referring to Figure 2, the second induced collapse structure 112 is located at the reinforcing rib 111 of the floor longitudinal beam 11 near the rear section 20 of the rear longitudinal beam, so that when the vehicle undergoes a rear collision, induced collapse can occur from this position.

[0052] In one embodiment, refer to Figure 4 , a baffle 113 and a third induced collapse structure 114 are still provided on the floor longitudinal beam 11. A rib 115 is provided on the baffle 113. Along the length direction x of the vehicle, the third induced collapse structure 114 is relatively located behind the baffle 113, that is, the third induced collapse structure 114 is arranged close to the first induced collapse structure 30.

[0053] It should be noted that the floor longitudinal beam 11 is to be connected to the subframe (i.e., the rear suspension). By providing the baffle 113 and the third induced collapse structure 114 and combining their positional relationships, when the vehicle undergoes a rear collision, when the acting force is transmitted to the third induced collapse structure 114, under the induction of the third induced collapse structure 114, the floor longitudinal beam 11 will deform and fail at this position and absorb energy. In this way, it can effectively prevent the subframe from moving forward towards the front of the vehicle and hitting or invading the components in front of the vehicle (such as the battery pack), resulting in damage to the components in front (the battery pack). At the same time, the baffle 113 is behind the third induced collapse structure 114 and is used to block the structure from continuing to invade the front of the vehicle. Thus, it protects the components in front of the vehicle.

[0054] Furthermore, the baffle 113 protrudes from the surface of the floor longitudinal beam 11. When the vehicle undergoes a rear collision, the main function of the baffle 113 is to block the rearward deformed structure from moving towards the front of the vehicle; at the same time, the baffle 113 functions to strengthen the structural strength at the connection between the floor longitudinal beam 11 and the subframe, thereby avoiding the failure of the subframe mounting point during the collision and causing the risk of the subframe moving forward and causing damage to the battery pack. That is, preferably, the position of the baffle 113 is set at the connection between the floor longitudinal beam 11 and the subframe.

[0055] Furthermore, the baffle 113, the rib 115 and the floor longitudinal beam 11 are integrally formed by die-casting, thereby effectively ensuring the overall structural strength of the structure. Of course, the processing method between the baffle 113 and the floor longitudinal beam 11 is not limited to this, and it can also be processed by processes such as extrusion molding according to requirements.

[0056] In one embodiment, refer to Figure 4 , the third induced collapse structure 114 is configured as a recessed groove and / or hole formed on the surface of the floor longitudinal beam 11. In this embodiment, the third induced collapse structure 114 is configured as a hole.

[0057] Further, the position of the third induced collapse structure 114 is substantially the same as that of the second induced collapse structure 112, and both are at the reinforcing rib 111 near the rear section of the rear longitudinal beam 20. The difference is that the third induced collapse structure 114 and the second induced collapse structure 112 are located on different sides of the floor longitudinal beam 11. Of course, the position of the third induced collapse structure 114 and the position of the second induced collapse structure 112 can also be set in a front-back manner, and the specific manner can be set according to actual needs.

[0058] As Figure 1 , Figure 2 or Figure 4 shown, a first connecting rib 131 is provided on the wheelhouse 13; the function of the first connecting rib 131 is to strengthen the local structural strength of the wheelhouse 13 and meet the torsional stiffness of the whole vehicle, reducing the deformation probability during a rear collision. Here, the first connecting rib 131 can be integrally formed with the wheelhouse 13.

[0059] In one embodiment, as Figure 5 shown, a second connecting rib 141 is provided between the floor panel 14 and the floor cross beam 12. Here, the setting of the second connecting rib 141 can effectively strengthen the structural strength between the floor panel 14 and the floor cross beam 12, increasing the overall stability of the structure.

[0060] Preferably, the second connecting rib 141 can be integrally formed with the floor panel 14.

[0061] As Figure 1 or Figure 3 shown, the number of the rear sections 20 of the rear longitudinal beam is set to two, and each rear section 20 of the rear longitudinal beam is correspondingly connected to a rear longitudinal beam (not shown in the figure). The rear section 20 of the rear longitudinal beam can be formed by extrusion or die casting. In this embodiment, the rear section 20 of the rear longitudinal beam is set as an extruded aluminum structure.

[0062] Further, referring to Figure 3 , the cross-section of the rear section 20 of the rear longitudinal beam along the width direction y of the vehicle is in a "day" shape. In this way, while enhancing the structural strength, more collision energy can be absorbed, thereby preventing the rear structure from invading the cockpit towards the front of the vehicle and improving the driving and riding safety.

[0063] In one embodiment, the rear section 20 of the rear longitudinal beam is connected to the floor longitudinal beam 11 in a detachable manner. Here, the detachable manner includes bolt connection, snap connection or a combination thereof.

[0064] As Figure 3 or Figure 4As shown, the first induced collapse structure 30 is provided as a recessed groove and / or a hole. With such a setting, not only is the structure simple but also the processing is convenient. In this embodiment, the first induced collapse structure 30 is configured as a groove. This groove can be formed by a later stamping method or integrally formed during the processing of the rear section 20 of the longitudinal beam in the early stage.

[0065] In this embodiment, the first induced collapse structure 30 is provided as a recessed groove.

[0066] This application also provides an automobile, including the automobile rear floor assembly 100 in any of the above embodiments.

[0067] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0068] The above-described embodiments only represent several implementation manners of this application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the patent protection scope of this application should be subject to the appended claims.

Claims

1. A rear floor assembly of an automobile, characterized in that: The automobile rear floor assembly comprises: rear floor (10); A rear longitudinal beam rear section (20) is used to connect the rear longitudinal beam, and the rear longitudinal beam rear section (20) is detachably connected to the rear of the rear floor (10) along the length direction of the vehicle and from the rear to the front direction of the vehicle; Wherein, along the width direction of the automobile, a first crush inducing structure (30) is provided on a side surface (21) of the rear section (20) of the rear longitudinal beam, and the first crush inducing structure (30) extends on the side surface (21) along the vertical direction of the automobile.

2. The automobile rear floor assembly according to claim 1, characterized in that: The first collapse inducing structure (30) is configured as a recessed groove and / or a hole formed on the side surface (21).

3. The automobile rear floor assembly according to claim 1, characterized in that: The strength of the rear floor (10) is gradually enhanced along the length direction of the vehicle and from the rear to the front of the vehicle.

4. The automobile rear floor assembly according to claim 1, characterized in that: The rear floor (10) comprises a floor longitudinal beam (11), a floor cross beam (12), a wheel cover (13) and a floor panel (14); the floor longitudinal beam (11) is connected to the rear section (20) of the rear longitudinal beam, the floor cross beam (12) is connected to the floor longitudinal beam (11), and the wheel cover (13) is connected to the floor longitudinal beam (11); Wherein, along the length direction of the vehicle and from the rear to the rear front of the vehicle, the strength of the floor longitudinal beam (11) gradually increases.

5. The automobile rear floor assembly according to claim 4, characterized in that: A plurality of reinforcing ribs (111) are arranged inside the floor longitudinal beam (11), and the plurality of reinforcing ribs (111) are arranged in a staggered manner along the length direction of the automobile, and the number of reinforcing ribs (111) located at the rear of the automobile is relatively smaller than the number of reinforcing ribs (111) located at the front of the automobile.

6. The automobile rear floor assembly according to claim 4 or 5, characterized in that: A second collapse inducing structure (112) is provided on the side surface of the floor longitudinal beam (11).

7. The automobile rear floor assembly according to claim 6, characterized in that: The second collapse inducing structure (112) is configured as a recessed groove and / or a hole.

8. The automobile rear floor assembly according to claim 4, characterized in that: The floor longitudinal beam (11) is also provided with a baffle (113) and a third inducing collapse structure (114), and the baffle (113) is provided with a baffle rib (115). Along the length direction of the automobile, the third inducing collapse structure (114) is relatively located behind the baffle (113).

9. The automobile rear floor assembly according to claim 4, characterized in that: The wheel cover (13) is provided with a first connecting rib (131); And / or, a second connecting rib (141) is provided between the floor panel (14) and the floor cross beam (12).

10. An automobile, characterized in that: The invention comprises the automobile rear floor assembly as claimed in any one of claims 1 to 9.

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