Rear floor and vehicle

Abstract

The utility model is suitable for the technical field of vehicles, and provides a rear floor and a vehicle, the vehicle comprises the rear floor, the rear floor comprises an integrally-formed floor framework, and the floor framework comprises two longitudinal beams and a plurality of cross beams. The two longitudinal beams are arranged in a spaced mode in the first direction. The multiple cross beams are arranged between the two longitudinal beams at intervals in the second direction. The two adjacent cross beams and the two adjacent longitudinal beams define a first space, the first space is provided with an inner circumferential surface arranged in the circumferential direction, and the inner circumferential surface comprises a first surface arranged between the longitudinal beams and the cross beams; on a cross section parallel to the first direction and the second direction, the first surface extends along a straight line and is respectively crossed with the first direction and the second direction; the first direction and the second direction intersect. By means of the arrangement, the overall connection strength of the floor framework can be improved, and therefore the structural strength of the floor framework can be improved, and the structural strength of the rear floor is improved.

Description

Technical Field

[0001] This application belongs to the technical field of vehicles, and more specifically, relates to a rear floor and a vehicle. Background Art

[0002] In some cases, the floor skeleton may include longitudinal beams, cross beams, and a connection structure provided between the longitudinal beams and the cross beams. The longitudinal beams, cross beams, and connection structure are fixed by welding. In this way, the structural strength of the floor skeleton is relatively low and it is difficult to meet the requirements of the vehicle. Utility Model Content

[0003] In view of the above problems, the embodiments of this application provide a rear floor and a vehicle, which can improve the technical problem of the low structural strength of the floor skeleton.

[0004] In a first aspect, the embodiments of this application provide a rear floor, including an integrally formed floor skeleton, and the floor skeleton includes:

[0005] Two longitudinal beams, spaced along a first direction;

[0006] Multiple cross beams, spaced between the two longitudinal beams along a second direction; an inner peripheral surface arranged circumferentially is provided in a first space formed by enclosing two adjacent cross beams and two longitudinal beams, and the inner peripheral surface includes a first surface provided between the longitudinal beam and the cross beam; in a cross section parallel to the first direction and the second direction, the first surface extends linearly and intersects the first direction and the second direction respectively;

[0007] Wherein, the first direction and the second direction intersect.

[0008] In the rear floor provided by the embodiments of this application, the inner peripheral surface of the first space formed by enclosing two adjacent cross beams and two longitudinal beams of the floor skeleton includes a first surface provided between the cross beam and the longitudinal beam. In a cross section parallel to the first direction and the second direction, the first surface extends linearly and intersects the first direction and the second direction. In this way, the cross-sectional area of the part between the cross beam and the longitudinal beam can be increased, thereby improving the connection strength between the cross beam and the longitudinal beam. Moreover, the floor skeleton is integrally formed. With such a setting, the overall connection strength of the floor skeleton can be increased, thereby improving the structural strength of the floor skeleton and the structural strength of the rear floor.

[0009] In some embodiments, in a cross section parallel to the first direction and the second direction, a second surface is connected to one end of the first surface close to the longitudinal beam, and the second surface extends along a concave arc;

[0010] And / or, in a cross section parallel to the first direction and the second direction, a third surface is connected to one end of the first surface close to the cross beam, and the third surface extends along a concave arc.

[0011] By adopting the above technical solutions, the problem of stress concentration at the first surface can be improved, the structural strength of the floor skeleton can be enhanced to increase the collision strength and torsional stiffness of the floor skeleton. In addition, the risk of cracking during the forming process of the floor skeleton can also be reduced.

[0012] In some embodiments, the inner circumferential surface further includes a fourth surface provided on the longitudinal beam; in a cross-section parallel to the first direction and the second direction, the second surface is connected between the fourth surface and the first surface;

[0013] And / or, the inner circumferential surface further includes a fifth surface provided on the cross beam; in a cross-section parallel to the first direction and the second direction, the third surface is connected between the fifth surface and the first surface.

[0014] By adopting the above technical solutions, the problem of stress concentration in the floor skeleton can be improved, the structural strength of the floor skeleton can be enhanced to increase the collision performance and torsional stiffness of the floor skeleton. In addition, the risk of cracking during the forming process of the floor skeleton can also be reduced.

[0015] In some embodiments, in a cross-section parallel to the first direction and the second direction, the second surface and / or the third surface is a rounded corner.

[0016] By adopting the above technical solutions, it is convenient to improve the problem of stress concentration in the floor skeleton, convenient to enhance the structural strength of the floor skeleton to increase the collision strength and torsional stiffness of the floor skeleton. In addition, the risk of cracking during the forming process of the floor skeleton can also be reduced.

[0017] In some embodiments, the inner circumferential surface includes four first surfaces, and a first surface is provided between each cross beam and each longitudinal beam; in a cross-section parallel to the first direction and the second direction, the opposite ends of each first surface are respectively connected to a second surface and a third surface.

[0018] With such an arrangement, a first surface, a second surface, and a third surface are provided between each end of each cross beam and the longitudinal beam, which can improve the connection strength between each cross beam and each longitudinal beam, enhance the structural strength of the floor skeleton to increase the collision strength and torsional stiffness of the floor skeleton. In addition, the risk of cracking during the forming process of the floor skeleton can also be reduced.

[0019] In some embodiments, the longitudinal beam includes a first wall and a second wall connected to the first wall, the cross beam includes a third wall and a fourth wall connected to the third wall, the third wall is connected to the first wall, and the fourth wall is connected to the second wall; the second wall is bent towards the same side in the third direction relative to the first wall, and the fourth wall is bent towards the same side in the third direction relative to the third wall; the fourth walls of two adjacent cross beams and the second walls of two longitudinal beams enclose a first space, and the inner circumferential surface is provided on the second wall and the fourth wall;

[0020] Wherein, the third direction intersects the first direction and the second direction, and the first direction, the second direction, and the third direction are not in the same plane.

[0021] By bending the second wall relative to the first wall and the fourth wall relative to the third wall, specifically, by bending the second wall relative to the first wall and the fourth wall relative to the third wall to the same side in the third direction, the structural strength of the floor skeleton can be improved, so as to improve the collision strength and torsional stiffness of the floor skeleton.

[0022] In some embodiments, in the third direction, the dimension by which the second wall extends beyond the first wall is [40 mm, 140 mm]; and / or, in the third direction, the dimension by which the fourth wall extends beyond the third wall is [40 mm, 140 mm].

[0023] By adopting the above technical solution, on the one hand, the floor skeleton can have greater structural strength. On the other hand, the first space has a larger dimension in the third direction, so as to facilitate the first space to accommodate and position components such as the vehicle's powertrain.

[0024] In some embodiments, in the third direction, the dimension by which the second wall extends beyond the first wall is [60 mm, 90 mm]; and / or, in the third direction, the dimension by which the fourth wall extends beyond the third wall is [60 mm, 90 mm].

[0025] By adopting the above technical solution, on the one hand, the floor skeleton can have greater structural strength. On the other hand, the first space has a larger dimension in the third direction, so as to facilitate the first space to accommodate and position components such as the vehicle's powertrain.

[0026] In some embodiments, the longitudinal beam further includes a fifth wall, the fifth wall is connected to one end of the second wall away from the first wall, and is bent relative to the second wall; the cross beam further includes a sixth wall, the sixth wall is connected to one end of the fourth wall away from the third wall, and is bent relative to the fourth wall.

[0027] With such a setting, the structural strength of the floor skeleton can be improved, which helps to improve the collision strength and torsional stiffness of the floor skeleton.

[0028] In some embodiments, the fifth wall and / or the sixth wall are provided with notches, and at least part of the notches is arranged corresponding to the position of the first surface.

[0029] In this way, the structural strength of the floor skeleton can be improved.

[0030] In some embodiments, the longitudinal beam includes a first extension portion extending to the outside of the cross beam along the second direction, and a sixth surface is provided between the cross beam and the first extension portion; in a cross section parallel to the first direction and the second direction, the sixth surface extends along a concave arc.

[0031] Such a setting enables an arc transition between the first extension part and the cross beam, thereby improving the problem of stress concentration between the first extension part and the cross beam, enhancing the structural strength of the floor skeleton, and improving the collision strength and torsional stiffness of the floor skeleton. In addition, the risk of cracking during the forming process of the floor skeleton can be reduced.

[0032] In some embodiments, on a cross-section parallel to the first direction and the second direction, a sixth surface is connected to a seventh surface. The seventh surface extends linearly and intersects the first direction and the second direction respectively.

[0033] Such a setting can increase the connection strength between the first extension part and the cross beam, so as to improve the structural strength of the floor skeleton and enhance the collision strength and torsional stiffness of the rear floor.

[0034] In some embodiments, on one side of the cross beam close to the first extension part along the second direction, there is an eighth surface; on a cross-section parallel to the first direction and the second direction, a ninth surface is connected between the eighth surface and the seventh surface. The ninth surface extends along a concave arc, and the seventh surface is connected between the ninth surface and the sixth surface.

[0035] Such a setting enables an arc transition between the sixth surface and the seventh surface, and moreover, an arc transition can be achieved between the seventh surface and the eighth surface through the ninth surface. In this way, the problem of stress concentration between the first extension part and the cross beam can be improved, the connection strength between the first extension part and the cross beam can be increased, so as to improve the structural strength of the floor skeleton and enhance the collision strength and torsional stiffness of the rear floor. In addition, the risk of cracking during the forming process of the floor skeleton can be reduced.

[0036] In some embodiments, on a cross-section parallel to the first direction and the second direction, the sixth surface and / or the ninth surface is a rounded corner.

[0037] By adopting the above technical solutions, it is convenient to improve the problem of stress concentration of the floor skeleton, and it is convenient to enhance the structural strength of the floor skeleton, so as to improve the collision strength and torsional stiffness of the floor skeleton. In addition, the risk of cracking during the forming process of the floor skeleton can be reduced.

[0038] In some embodiments, the longitudinal beam includes a second extension part extending outside the cross beam along the second direction, and the second extension parts of the two longitudinal beams are arranged to gradually expand away from the cross beam along the second direction;

[0039] On one side of the two second extension parts facing each other, there is a tenth surface. The tenth surface is arranged to gradually expand away from the cross beam along the second direction, and the included angle formed by the tenth surface and the second direction is [10°, 35°].

[0040] With such a setting, the tenth surface is tapered away from the crossbeam along the second direction, and a suitable angle is formed between the tenth surface and the second direction. On the one hand, a relatively large connection strength can be achieved between the second extension part and the crossbeam, so that the floor skeleton has a relatively large structural strength. On the other hand, a relatively large distance is provided between the second extension parts of the two longitudinal beams, which is convenient for accommodating and positioning components such as the vehicle's powertrain.

[0041] In some embodiments, the angle formed between the tenth surface and the second direction is [20°, 30°].

[0042] With such a setting, the tenth surface is tapered away from the crossbeam along the second direction, and a suitable angle is formed between the tenth surface and the second direction. On the one hand, a relatively large connection strength can be achieved between the second extension part and the crossbeam, so that the floor skeleton has a relatively large structural strength. On the other hand, a relatively large distance is provided between the second extension parts of the two longitudinal beams, which is convenient for accommodating and positioning components such as the vehicle's powertrain.

[0043] In some embodiments, a plurality of hole assemblies are provided on the floor skeleton and are spaced apart along the second direction. The plurality of hole assemblies are used for selectively connecting to the vehicle body; the hole assembly includes a plurality of connection holes spaced apart along the first direction, and connection holes are provided on the crossbeam and / or the longitudinal beam.

[0044] In this way, the versatility of the floor skeleton can be improved.

[0045] In some embodiments, the rear floor further includes a floor body, and the floor body is connected to the crossbeam and the longitudinal beam.

[0046] With such a setting, the rear floor formed by the floor skeleton and the floor body has a relatively large structural strength.

[0047] In some embodiments, the longitudinal beam and / or the crossbeam are provided with weight-reducing holes.

[0048] With such a setting, a lightweight design of the rear floor can be achieved.

[0049] In a second aspect, an embodiment of the present application provides a vehicle, including a rear floor.

[0050] For the vehicle provided by the embodiment of the present application, by adopting the rear floor involved in the above embodiments, the structural strength of the rear floor can be improved, so as to improve the structural strength of the vehicle.

[0051] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the 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 drawings can also be obtained based on these drawings.

[0053] Figure 1 Schematic diagram of a vehicle provided in some embodiments of the present application;

[0054] Figure 2 Three-dimensional structure of the floor skeleton of the rear floor provided in some embodiments of the present application Figure 1 ;

[0055] Figure 3 For Figure 2 Enlarged view of part A in

[0056] Figure 4 Schematic diagram of the floor skeleton of the rear floor provided in some embodiments of the present application;

[0057] Figure 5 For Figure 4 Enlarged view of part B in

[0058] Figure 6 For Figure 4 Enlarged view of part C in

[0059] Figure 7 Three-dimensional structure of the floor skeleton of the rear floor provided in some embodiments of the present application Figure 2 ;

[0060] Figure 8 For Figure 7 Enlarged view of part D in

[0061] Among them, the reference numerals in the figure:

[0062] 1000 - Vehicle; 100 - Battery; 200 - Controller; 300 - Powertrain; 400 - Floor skeleton; 101 - First space; 102 - Inner peripheral surface; 1021 - First surface; 1022 - Second surface; 1023 - Third surface; 1024 - Fourth surface; 1025 - Fifth surface; 103 - Sixth surface; 104 - Seventh surface; 105 - Eighth surface; 106 - Ninth surface; 107 - Tenth surface; 108 - Notch; 109 - Hole assembly; 1091 - Connecting hole; 10 - Longitudinal beam; 11 - Main body; 111 - First wall; 112 - Second wall; 113 - Fifth wall; 12 - First extension; 13 - Second extension; 20 - Cross beam; 21 - Third wall; 22 - Fourth wall; 23 - Sixth wall; L1 - First dimension; L2 - Second dimension; β - First included angle; X - First direction; Y - Second direction; Z - Third direction. Detailed implementation manners

[0063] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application.

[0064] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0065] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0066] In the description of the present application, the meaning of "a plurality of" is more than two. Unless otherwise specifically defined, "more than two" includes two. Correspondingly, the meaning of "a plurality of groups" is more than two groups, including two groups.

[0067] In the description of the present application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0068] In the description of the present application, the term "and / or" is merely an association relationship describing associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: the existence of A, the simultaneous existence of A and B, and the existence of B. Additionally, in the present application, the character " / " generally represents an "or" relationship between the front and rear associated objects.

[0069] Although the present application has been described with reference to preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0070] In the related art, the rear floor is an important component of a vehicle. The rear floor generally can include a floor skeleton and a floor body connected to the floor skeleton, and the floor skeleton is used to connect to the vehicle body.

[0071] In some cases, the floor skeleton can include longitudinal beams, cross beams, and a connecting structure provided between the longitudinal beams and the cross beams. The longitudinal beams, cross beams, and the connecting structure are usually fixed by welding. In this way, the structural strength of the floor skeleton is relatively low and it is difficult to meet the requirements of the vehicle.

[0072] Based on the above considerations, the embodiments of the present application provide a rear floor and a vehicle. The inner peripheral surface of the first space formed by enclosing two adjacent cross beams and two longitudinal beams of the floor skeleton includes a first surface provided between the cross beam and the longitudinal beam. In a cross-section parallel to the first direction and the second direction, the first surface extends linearly and intersects the first direction and the second direction. In this way, the cross-sectional area of the part between the cross beam and the longitudinal beam can be increased, thereby improving the connection strength between the cross beam and the longitudinal beam. And, the floor skeleton is integrally formed. With such a setting, the overall connection strength of the floor skeleton can be increased, thereby improving the structural strength of the floor skeleton and the structural strength of the rear floor.

[0073] In some embodiments, the rear floor involved in the embodiments of the present application is applied to a vehicle.

[0074] Among them, when classified by power source, the vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle, etc. When classified by drive mode, the vehicle can be a front-wheel drive vehicle, a rear-wheel drive vehicle or a four-wheel drive vehicle.

[0075] In some embodiments, please refer to Figure 1 , Figure 1 which is a schematic diagram of the vehicle 1000 provided by some embodiments of the present application. A powertrain 300 is disposed inside the vehicle 1000, and the powertrain 300 is used to provide power for the vehicle 1000.

[0076] In some embodiments, the powertrain 300 may include a motor, and the motor is used as the power source of the powertrain 300 to provide power for the vehicle.

[0077] In some embodiments, the powertrain 300 may further include a transmission, and the transmission is connected to the motor to achieve torque change of the motor. Specifically, the transmission can be a mechanism for changing the rotational speed and torque from the motor, and it can fix or change the transmission ratio between the output shaft and the input shaft in steps.

[0078] In some embodiments, please continue to refer to Figure 1 , the vehicle 1000 may further include a battery 100 and a controller 200. The battery 100 can be disposed at the bottom, head or tail of the vehicle 1000 for supplying power to the vehicle 1000. For example, the battery 100 can be used as the operating power source of the vehicle 1000. The controller 200 is used to control the battery 100 to supply power to the powertrain 300, such as for the working power requirements during the start, navigation and driving of the vehicle 1000, etc.

[0079] In some embodiments, the battery 100 can not only be used as the operating power source of the vehicle 1000, but also be used as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0080] The battery 100 can be a single physical module including one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel or in a series-parallel combination through a busbar component. The series-parallel combination means that there are both series and parallel connections among the multiple battery cells.

[0081] In some embodiments, the battery 100 can be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0082] In some embodiments, the battery 100 may be a battery pack, and the battery pack may include a box body and battery cells. As an example, the battery cells may be directly accommodated in the box body. As an example, the battery cells may also first form a battery module and then be accommodated in the box body.

[0083] As an example, a plurality of battery cells may be fixed by cable ties or the like to form a battery module.

[0084] As an example, a plurality of battery cells may also be fixed by end plates, side plates or the like to form a battery module.

[0085] A battery cell refers to the smallest unit for storing and outputting electric energy. Among them, the battery cell may be a secondary battery or a primary battery. The battery cell may be, but is not limited to, a metal battery, a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery. The battery cell may be in a cylindrical shape, a flat shape, a cuboid shape or other shapes.

[0086] In some embodiments, please refer to Figure 1 and Figure 2 , and in combination with other drawings. Among them, Figure 2 is a three-dimensional structure of the floor skeleton 400 of the rear floor provided in some embodiments of the present application Figure 1 . The vehicle 1000 may further include a vehicle body and a rear floor. The rear floor includes a floor skeleton 400 and a floor body. The floor body is connected to the floor skeleton 400, and the floor skeleton 400 is connected to the vehicle body.

[0087] In some embodiments, the floor skeleton 400 may also be connected to the powertrain 300, so as to mount the powertrain 300 on the vehicle body.

[0088] The vehicle body is the main skeleton structure of the vehicle 1000. Among them, the vehicle body may include vehicle body longitudinal beams and vehicle body cross beams, and the vehicle body longitudinal beams and vehicle body cross beams are arranged vertically and horizontally. The floor skeleton 400 may be connected to the vehicle body longitudinal beams or the vehicle body cross beams.

[0089] Please refer to Figures 2 to 5 , and in combination with other drawings. Among them, Figure 3 is Figure 2 an enlarged view of part A in Figure 4 is a schematic diagram of the floor skeleton 400 of the rear floor provided in some embodiments of the present application, Figure 5 is Figure 4 an enlarged view of part B in Figure 4 and Figure 5In it, the floor skeleton 400 is perpendicular to the third direction Z involved below. The rear floor provided by the embodiment of the present application includes the floor skeleton 400, and the floor skeleton 400 is integrally formed. The floor skeleton 400 includes two longitudinal beams 10 and a plurality of cross beams 20. The two longitudinal beams 10 are arranged at intervals along the first direction X. The plurality of cross beams 20 are arranged at intervals along the second direction Y between the two longitudinal beams 10. An adjacent two cross beams 20 and the two longitudinal beams 10 enclose a first space 101, and an inner peripheral surface 102 arranged along the circumferential direction is provided in the first space 101. The inner peripheral surface 102 includes a first surface 1021, and the first surface 1021 is arranged between the longitudinal beam 10 and the cross beam 20. In a cross section parallel to the first direction X and the second direction Y, the first surface 1021 extends along a straight line, and the first surface 1021 intersects the first direction X and the second direction Y respectively. Among them, the first direction X and the second direction Y intersect.

[0090] The floor skeleton 400 is the main skeleton structure of the rear floor. The floor skeleton 400 is used to connect to the vehicle body. Specifically, it can connect to the body longitudinal beam 10 of the vehicle body, or can also connect to the body cross beam 20 of the vehicle body.

[0091] The floor skeleton 400 can be integrally formed by stamping, die casting and other methods. It can be understood that the two longitudinal beams 10 and the plurality of cross beams 20 are integrally connected so that the floor skeleton 400 is integrally formed. As an example, the floor skeleton 400 is integrally formed by hot stamping.

[0092] Both the longitudinal beam 10 and the cross beam 20 are beam structures of the floor skeleton 400. The extending directions of the longitudinal beam 10 and the cross beam 20 are different so that the longitudinal beam 10 and the cross beam 20 can be staggered. Specifically, the longitudinal beam 10 extends along the second direction Y, and the two longitudinal beams 10 are arranged at intervals along the first direction X. The cross beam 20 extends along the first direction X, and the plurality of cross beams 20 are arranged at intervals along the second direction Y. The plurality of cross beams 20 are arranged at intervals along the second direction Y between the two longitudinal beams 10, so that the opposite ends of each cross beam 20 along the first direction X are respectively connected to the two longitudinal beams 10. Among them, the first direction X is the approximate distribution direction of the two longitudinal beams 10 and is also the approximate extending direction of the cross beam 20. The second direction Y is the approximate distribution direction of the cross beam 20 and is also the approximate extending direction of the longitudinal beam 10.

[0093] The first space 101 is a space formed by enclosing two adjacent cross beams 20 and two longitudinal beams 10. The two longitudinal beams 10 are arranged at intervals along the first direction X, and a plurality of cross beams 20 are arranged at intervals along the second direction Y between the two longitudinal beams 10, so that the first space 101 formed by enclosing two adjacent cross beams 20 and two longitudinal beams 10 penetrates the floor skeleton 400 along the third direction Z. Among them, the third direction Z intersects with the first direction X, and the third direction Z intersects with the second direction Y. And, the first direction X, the second direction Y, and the third direction Z are not simultaneously in the same plane, that is, they are not simultaneously parallel to the same plane.

[0094] The inner peripheral surface 102 of the first space 101 is the inner wall surface of the first space 101 that surrounds the third direction Z. The inner peripheral surface 102 of the first space 101 is arranged along the circumferential direction, which means that the inner peripheral surface 102 of the first space 101 extends along the circumferential direction, and the head and tail parts of the inner peripheral surface 102 along the circumferential direction are connected. Among them, the circumferential direction is the circumferential direction that surrounds the third direction Z.

[0095] The first surface 1021 is one part of the wall surface of the inner peripheral surface 102. The first surface 1021 is arranged between the longitudinal beam 10 and the cross beam 20, which means that the first surface 1021 is arranged at the connection position between the longitudinal beam 10 and the cross beam 20 and is located between the longitudinal beam 10 and the cross beam 20. It can be understood that a connection structure may be formed between the longitudinal beam 10 and the cross beam 20, and the first surface 1021 is arranged on the connection structure. Among them, the connection structure may be arranged on the longitudinal beam 10; it may also be arranged on the cross beam 20; or part of it may be arranged on the longitudinal beam 10 and the other part may be arranged on the cross beam 20.

[0096] The cross-sectional view of the floor skeleton 400 parallel to the first direction X and the second direction Y is the same as Figure 4 the view of the floor skeleton 400 in, and can be generally referred to specifically. Among them, the cross-section parallel to the first direction X and the second direction Y is a cross-section perpendicular to the third direction Z.

[0097] As Figure 4 and Figure 5 shown, on the cross-section parallel to the first direction X and the second direction Y, the first surface 1021 extends along a straight line, which means that on the cross-section parallel to the first direction X and the second direction Y, the first surface 1021 is approximately a line segment. That is, the first surface 1021 is approximately a plane.

[0098] As Figure 4 and Figure 5As shown, on the cross-section parallel to the first direction X and the second direction Y, the first surface 1021 intersects the first direction X and the second direction Y. This means that on the cross-section parallel to the first direction X and the second direction Y, the line segment where the first surface 1021 is located has a first end close to the cross beam 20 and a second end far from the cross beam 20. In the direction where the second end points to the first end along the second direction Y, the line segment where the first surface 1021 is located extends away from the longitudinal beam 10 along the first direction X, so as to be tapered along the first direction X, that is, the second end extends towards the first end along the second direction Y. In this way, the cross-sectional area perpendicular to the third direction Z of the connection part between the longitudinal beam 10 and the cross beam 20 can be increased. Moreover, the first surface 1021 is substantially a plane, which can improve the problem of stress concentration between the longitudinal beam 10 and the cross beam 20 caused by the different extending directions of the longitudinal beam 10 and the cross beam 20. Thus, the connection strength between the longitudinal beam 10 and the cross beam 20 can be increased to improve the structural strength of the floor skeleton 400, and the collision strength and torsional stiffness of the rear floor can be improved.

[0099] On the cross-section parallel to the first direction X and the second direction Y, the intersection of the first surface 1021 and the first direction X means that on the cross-section parallel to the first direction X and the second direction Y, an angle greater than 0° and less than 180° can be formed between the line segment where the first surface 1021 is located and the first direction X, that is, the line segment where the first surface 1021 is located is not parallel to the first direction X. Among them, on the cross-section parallel to the first direction X and the second direction Y, the line segment where the first surface 1021 is located and the first direction X can be perpendicular to each other or not perpendicular. Among them, on the cross-section parallel to the first direction X and the second direction Y, the first direction X can intersect the line segment where the first surface 1021 is located, or the first direction X can also intersect the extension line of the line segment where the first surface 1021 is located. The intersection of the first surface 1021 and the second direction Y on the cross-section parallel to the first direction X and the second direction Y can be similarly explained and will not be elaborated here.

[0100] Among them, the first direction X, the second direction Y and the third direction Z can all be double-arrow directions.

[0101] The first direction X and the second direction Y intersect, which means that an angle greater than 0° and less than 180° is formed between the first direction X and the second direction Y, that is, the first direction X and the second direction Y are not parallel. Among them, the first direction X and the second direction Y can be perpendicular to each other or not perpendicular. The first direction X and the second direction Y can be directions that intersect on the same plane, or can be directions on planes that are skew to each other, and the projection of the second direction Y on the plane where the first direction X is located can intersect with the first direction X. Correspondingly, the meanings of the intersection of the first direction X and the third direction Z and the intersection of the second direction Y and the third direction Z can be similarly explained and will not be repeated here. As an example, the first direction X is perpendicular to the second direction Y, the first direction X is perpendicular to the third direction Z, and the second direction Y is perpendicular to the third direction Z. As an example, the first direction X can be the width direction of the vehicle 1000, the second direction Y can be the length direction of the vehicle 1000, and the third direction Z can be the height direction of the vehicle 1000.

[0102] The rear floor provided by the embodiment of the present application, the inner peripheral surface 102 of the first space 101 formed by enclosing two adjacent cross beams 20 and two longitudinal beams 10 of the floor skeleton 400 includes a first surface 1021 provided between the cross beam 20 and the longitudinal beam 10. In a cross section parallel to the first direction X and the second direction Y, the first surface 1021 extends linearly and intersects the first direction X and the second direction Y. In this way, the cross-sectional area of the part between the cross beam 20 and the longitudinal beam 10 can be increased, thereby improving the connection strength between the cross beam 20 and the longitudinal beam 10. And, the first surface 1021 is a plane, and the floor skeleton 400 is integrally formed. With such a setting, the overall connection strength of the floor skeleton 400 can be increased, thereby improving the structural strength of the floor skeleton 400 to improve the structural strength of the rear floor.

[0103] In addition, the floor skeleton 400 is integrally formed. On the basis that the floor skeleton 400 has greater structural strength, it helps to reduce the weight of the floor skeleton 400.

[0104] In addition, in the related art, the floor skeleton 400 is welded by multiple components, so that in the production process of the floor skeleton 400, multiple molds need to be developed in parallel to manufacture the components, which results in problems such as a long production cycle and high costs for the floor skeleton 400. The rear floor provided by the embodiment of the present application, the floor skeleton 400 is integrally formed, the production is simple and the cycle is short, which can improve the problems such as the long production cycle and high costs of the floor skeleton 400.

[0105] In addition, by providing the first surface 1021 between the cross beam 20 and the longitudinal beam 10, it helps to reduce the risk of cracking during the forming process of the floor skeleton 400.

[0106] In some embodiments, please refer toFigure 4 and Figure 5 and in combination with other attached drawings. In a cross-section parallel to the first direction X and the second direction Y, a second surface 1022 is connected to one end of the first surface 1021 close to the longitudinal beam 10, and the second surface 1022 extends along a concave arc.

[0107] The second surface 1022 is a part of the wall surface of the inner peripheral surface 102.

[0108] In a cross-section parallel to the first direction X and the second direction Y, the second surface 1022 extends along a concave arc, which means that in a cross-section parallel to the first direction X and the second direction Y, the second surface 1022 is generally a concave arc, and the concavity means that the second surface 1022 is recessed towards the inside of the floor skeleton 400. That is, the second surface 1022 is generally a concave arc surface.

[0109] Specifically, in a cross-section parallel to the first direction X and the second direction Y, as Figure 4 and Figure 5 shown, the arc where the second surface 1022 is located is connected to the second end of the line segment where the first surface 1021 is located.

[0110] With such a setting, the first surface 1021 and the second surface 1022 can achieve an arc transition, thereby improving the problem of stress concentration at one end of the first surface 1021 close to the longitudinal beam 10.

[0111] In some embodiments, please refer to Figure 4 and Figure 5 in combination with other attached drawings. In a cross-section parallel to the first direction X and the second direction Y, a third surface 1023 is connected to one end of the first surface 1021 close to the cross beam 20, and the third surface 1023 extends along a concave arc.

[0112] The third surface 1023 is a part of the wall surface of the inner peripheral surface 102.

[0113] In a cross-section parallel to the first direction X and the second direction Y, the third surface 1023 extends along a concave arc, which means that in a cross-section parallel to the first direction X and the second direction Y, the third surface 1023 is generally a concave arc, and the concavity means that the third surface 1023 is recessed towards the inside of the floor skeleton 400. That is, the third surface 1023 is generally a concave arc surface.

[0114] Specifically, in a cross-section parallel to the first direction X and the second direction Y, as Figure 4 and Figure 5 shown, the arc where the third surface 1023 is located is connected to the first end of the line segment where the first surface 1021 is located.

[0115] With such a setting, the first surface 1021 and the third surface 1023 can achieve an arc transition, thereby improving the problem of stress concentration at one end of the first surface 1021 close to the longitudinal beam 10.

[0116] By adopting the above technical solution, the problem of stress concentration at the first surface 1021 can be improved, the structural strength of the floor skeleton 400 can be enhanced to improve the collision strength and torsional stiffness of the floor skeleton 400. In addition, the risk of cracking during the forming process of the floor skeleton 400 can also be reduced.

[0117] In some embodiments, please refer to Figure 4 and Figure 5 , and in combination with other drawings. The inner peripheral surface 102 further includes a fourth surface 1024, and the fourth surface 1024 is provided on the longitudinal beam 10. In a cross-section parallel to the first direction X and the second direction Y, the second surface 1022 is connected between the fourth surface 1024 and the first surface 1021.

[0118] The fourth surface 1024 is a part of the wall surface of the inner peripheral surface 102. Among them, the fourth surface 1024 can be a plane or a curved surface. As an example, as Figure 4 and Figure 5 shown, in a cross-section parallel to the first direction X and the second direction Y, the fourth surface 1024 extends along a straight line, so that the fourth surface 1024 is substantially a line segment. In this way, the fourth surface 1024 is substantially a plane.

[0119] As an example, as Figure 4 and Figure 5 shown, in a cross-section parallel to the first direction X and the second direction Y, the line segment where the fourth surface 1024 is located is substantially parallel to the second direction Y.

[0120] In a cross-section parallel to the first direction X and the second direction Y, the second surface 1022 is provided between the fourth surface 1024 and the first surface 1021 and is respectively connected to the fourth surface 1024 and the first surface 1021.

[0121] With such a setting, an arc transition can be achieved between the first surface 1021 and the fourth surface 1024 through the second surface 1022, thereby improving the problem of stress concentration between the first surface 1021 and the fourth surface 1024.

[0122] In some embodiments, please refer to Figure 4 and Figure 5 , and in combination with other drawings. The inner peripheral surface 102 further includes a fifth surface 1025, and the fifth surface 1025 is provided on the cross beam 20. In a cross-section parallel to the first direction X and the second direction Y, the third surface 1023 is connected between the fifth surface 1025 and the first surface 1021.

[0123] The fifth surface 1025 is a part of the wall surface of the inner circumferential surface 102. Among them, the fifth surface 1025 can be a plane or a curved surface. As an example, as Figure 4 and Figure 5 shown, in the cross-section parallel to the first direction X and the second direction Y, the fifth surface 1025 extends linearly, so that the fifth surface 1025 is substantially a line segment. In this way, the fifth surface 1025 is substantially a plane.

[0124] As an embodiment, as Figure 4 and Figure 5 shown, in the cross-section parallel to the first direction X and the second direction Y, the line segment where the fifth surface 1025 is located is substantially parallel to the first direction X.

[0125] In the cross-section parallel to the first direction X and the second direction Y, the third surface 1023 is disposed between the fifth surface 1025 and the first surface 1021, and is respectively connected to the fifth surface 1025 and the first surface 1021.

[0126] Such a setting enables an arc transition between the first surface 1021 and the fifth surface 1025 through the third surface 1023, thereby improving the problem of stress concentration between the first surface 1021 and the fifth surface 1025.

[0127] By adopting the above technical solution, the problem of stress concentration of the floor skeleton 400 can be improved, the structural strength of the floor skeleton 400 can be increased to improve the collision performance and torsional stiffness of the floor skeleton 400. In addition, the risk of cracking during the forming process of the floor skeleton 400 can be reduced.

[0128] In some embodiments, the longitudinal beam 10 may not be provided with the above-mentioned fourth surface 1024, but the second surface 1022 replaces the fourth surface 1024. The cross beam 20 may not be provided with the above-mentioned fifth surface 1025, but the third surface 1023 replaces the fifth surface 1025. Specifically, in the circumferential direction, the inner circumferential surface 102 is distributed in sequence with the second surface 1022, the first surface 1021, the third surface 1023, the first surface 1021, the second surface 1022, the first surface 1021, the third surface 1023, and the first surface 1021.

[0129] In some embodiments, please refer to Figure 4 and Figure 5 together, and in combination with other drawings. In the cross-section parallel to the first direction X and the second direction Y, the second surface 1022 is a fillet.

[0130] Such a setting facilitates the arc transition between the first surface 1021 and the second surface 1022.

[0131] In some embodiments, please refer to Figure 4 and Figure 5, and in combination with other attached drawings. On the cross-section parallel to the first direction X and the second direction Y, the third surface 1023 is a rounded corner.

[0132] With such a setting, it is convenient for the first surface 1021 and the third surface 1023 to achieve an arc transition.

[0133] By adopting the above technical solution, it is convenient to improve the problem of stress concentration of the floor skeleton 400, improve the structural strength of the floor skeleton 400, so as to improve the collision strength and torsional stiffness of the floor skeleton 400. In addition, the risk of cracking during the forming process of the floor skeleton 400 can also be reduced.

[0134] In some embodiments, please refer to Figures 2 to 5 , and in combination with other attached drawings. The inner circumferential surface 102 includes four first surfaces 1021, and a first surface 1021 is provided between each cross beam 20 and each longitudinal beam 10. On the cross-section parallel to the first direction X and the second direction Y, as Figure 4 and Figure 5 shown, the opposite ends of each first surface 1021 are respectively connected to a second surface 1022 and a third surface 1023.

[0135] It can be understood that in the circumferential direction, the inner circumferential surface 102 is distributed in sequence with the second surface 1022, the first surface 1021, the third surface 1023, the first surface 1021, the second surface 1022, the first surface 1021, the third surface 1023, and the first surface 1021; or, as Figure 4 and Figure 5 shown, in the circumferential direction, the inner circumferential surface 102 is distributed in sequence with the fourth surface 1024, the second surface 1022, the first surface 1021, the third surface 1023, the fifth surface 1025, the third surface 1023, the first surface 1021, the second surface 1022, the fourth surface 1024, the second surface 1022, the first surface 1021, the third surface 1023, the fifth surface 1025, the third surface 1023, the first surface 1021, and the second surface 1022. In this way, a first surface 1021 is provided between each longitudinal beam 10 and each cross beam 20.

[0136] With such a setting, a first surface 1021, a second surface 1022, and a third surface 1023 are provided between each end of each cross beam 20 and the longitudinal beam 10. In this way, the connection strength between each cross beam 20 and each longitudinal beam 10 can be improved, and the structural strength of the floor skeleton 400 can be improved, so as to improve the collision strength and torsional stiffness of the floor skeleton 400. In addition, the risk of cracking during the forming process of the floor skeleton 400 can also be reduced.

[0137] In some embodiments, please refer to Figure 2 and Figure 3, and in combination with other attached drawings. The longitudinal beam 10 includes a first wall 111 and a second wall 112 connected to the first wall 111. The cross beam 20 includes a third wall 21 and a fourth wall 22 connected to the third wall 21. The third wall 21 is connected to the first wall 111, and the fourth wall 22 is connected to the second wall 112. The second wall 112 is bent relative to the first wall 111, and the fourth wall 22 is bent relative to the third wall 21. Specifically, the second wall 112 is bent relative to the first wall 111, and the fourth wall 22 is bent relative to the third wall 21 and is bent on the same side in the third direction Z. The fourth walls 22 of two adjacent cross beams 20 and the second walls 112 of two longitudinal beams 10 enclose to form the above-mentioned first space 101, and the inner peripheral surface 102 is provided on the second wall 112 and the fourth wall 22. The third direction Z is perpendicular to the first direction X and perpendicular to the second direction Y. And, the first direction X, the second direction Y, and the third direction Z are not simultaneously in the same plane, that is, they are not simultaneously parallel to the same plane.

[0138] The first wall 111 and the second wall 112 are two solid walls of the longitudinal beam 10, and the third wall 21 and the fourth wall 22 are two solid walls of the cross beam 20. Among them, the inner peripheral surface 102 is provided on the second wall 112 and the fourth wall 22. Specifically, the first surface 1021 is provided between the second wall 112 and the fourth wall 22, that is, the first surface 1021 is provided at the connection position between the second wall 112 and the fourth wall 22. The second surface 1022 and the fourth surface 1024 can be provided on the second wall 112, and the third surface 1023 and the fifth surface 1025 can be provided on the fourth wall 22.

[0139] By bending the second wall 112 relative to the first wall 111 and the fourth wall 22 relative to the third wall 21, specifically, the second wall 112 is bent relative to the first wall 111, and the fourth wall 22 is bent relative to the third wall 21 and is bent on the same side in the third direction Z, the structural strength of the floor skeleton 400 can be improved, so as to improve the collision strength and torsional stiffness of the floor skeleton 400.

[0140] In some embodiments, please refer to Figure 2 and Figure 3 、 Figure 7 and Figure 8 , and in combination with other attached drawings. Among them, Figure 7 is the three-dimensional structure of the floor skeleton 400 of the rear floor provided by some embodiments of the present application Figure 2 , Figure 8 is Figure 7 the enlarged view at D in

[0141] The second wall 112 is bent relative to the first wall 111 and is bent on one side in the third direction Z, so that the second wall 112 protrudes beyond the first wall 111 in the third direction Z.

[0142] In the third direction Z, the dimension of the portion where the second wall 112 extends beyond the first wall 111 is a first dimension L1, and the first dimension L1 is [40 mm, 140 mm], that is, 40 mm ≤ the first dimension L1 ≤ 140 mm. Among them, the first dimension L1 can specifically be 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm, 140 mm, etc.

[0143] With such a setting, in the third direction Z, the portion where the second wall 112 extends beyond the first wall 111 has a more appropriate dimension.

[0144] In some embodiments, please refer to Figure 2 and Figure 3 、 Figure 7 and Figure 8 and in combination with other drawings. In the third direction Z, the dimension of the fourth wall 22 extending beyond the third wall 21 is [40 mm, 140 mm].

[0145] The fourth wall 22 is bent relative to the third wall 21 toward one side in the third direction Z, so that the fourth wall 22 extends beyond the third wall 21 in the third direction Z.

[0146] In the third direction Z, the dimension of the portion where the fourth wall 22 extends beyond the third wall 21 is a second dimension L2, and the second dimension L2 is [40 mm, 140 mm], that is, 40 mm ≤ the second dimension L2 ≤ 140 mm. Among them, the second dimension L2 can specifically be 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm, 140 mm, etc.

[0147] With such a setting, in the third direction Z, the portion where the fourth wall 22 extends beyond the third wall 21 has a more appropriate dimension.

[0148] By adopting the above technical solution, on the one hand, the floor skeleton 400 can have greater structural strength. On the other hand, the first space 101 has a larger dimension in the third direction Z, so as to facilitate the first space 101 to accommodate and position components such as the power assembly 300 of the vehicle 1000.

[0149] In some embodiments, please refer to Figure 2 and Figure 3 、 Figure 7 and Figure 8 and in combination with other drawings. In the third direction Z, the dimension of the second wall 112 extending beyond the first wall 111 is [60 mm, 90 mm].

[0150] Understandably, 60 mm ≤ the first dimension L1 ≤ 90 mm. Among them, the first dimension L1 can specifically be 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, 85 mm, 90 mm, etc.

[0151] With such a setting, in the third direction Z, the portion where the second wall 112 extends beyond the first wall 111 has a more appropriate dimension.

[0152] In some embodiments, please refer to Figure 2 and Figure 3 、 Figure 7 and Figure 8 , and in combination with other drawings. In the third direction Z, the dimension by which the fourth wall 22 extends beyond the third wall 21 is [60 mm, 90 mm].

[0153] Understandably, 60 mm ≤ the second dimension L2 ≤ 90 mm. Among them, the second dimension L2 can specifically be 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, 85 mm, 90 mm, etc.

[0154] With such a setting, in the third direction Z, the portion where the fourth wall 22 extends beyond the third wall 21 has a more appropriate dimension.

[0155] By adopting the above technical solution, on the one hand, the floor skeleton 400 can have greater structural strength. On the other hand, the first space 101 has a larger dimension in the third direction Z, so as to facilitate the first space 101 to accommodate and position components such as the power assembly 300 of the vehicle 1000.

[0156] In some embodiments, please refer to Figures 2 to 5 、 Figure 7 and Figure 8 , and in combination with other drawings. The longitudinal beam 10 further includes a fifth wall 113, and the fifth wall 113 is connected to one end of the second wall 112 away from the first wall 111 and is bent relative to the second wall 112. The cross beam 20 further includes a sixth wall 23, and the sixth wall 23 is connected to one end of the fourth wall 22 away from the third wall 21 and is bent relative to the fourth wall 22.

[0157] The fifth wall 113 is a solid wall of the longitudinal beam 10, and the sixth wall 23 is a solid wall of the cross beam 20.

[0158] As an example, the fifth wall 113 is bent relative to the second wall 112, and the sixth wall 23 is bent relative to the fourth wall 22. Specifically, in a cross-section parallel to the first direction X and the second direction Y, as Figure 4 and Figure 5 shown, both the fifth wall 113 and the sixth wall 23 are bent towards the middle position of the first space 101.

[0159] Such a setting can improve the structural strength of the floor frame 400, thereby helping to improve the collision strength and torsional stiffness of the floor frame 400.

[0160] In some embodiments, please refer to Figures 2 to 5 、 Figure 7 and Figure 8 in conjunction with other drawings. The fifth wall 113 and / or the sixth wall 23 are provided with notches 108. At least a part of the notch 108 is arranged corresponding to the position of the first surface 1021.

[0161] Understandably, the fifth wall 113 can be provided with the notch 108. The sixth wall 23 can also be provided with the notch 108. As Figures 2 to 5 、 Figure 7 and Figure 8 shown, a notch 108 can also be provided between the fifth wall 113 and the sixth wall 23.

[0162] Understandably, at least one of the fifth wall 113 and the sixth wall 23 is provided with a notch 108 at the first surface 1021. That is, the notch 108 is provided at the connection position of the longitudinal beam 10 and the cross beam 20.

[0163] Specifically, after the floor frame 400 is stamped and formed, the notch 108 can be set to remove the overlapping material formed at the first surface 1021 of at least one of the fifth wall 113 and the sixth wall 23, that is, to remove the overlapping material between the longitudinal beam 10 and the cross beam 20.

[0164] In this way, the structural strength of the floor frame 400 can be improved.

[0165] Specifically, the notch 108 can also correspond to the position of the second surface 1022 and can also correspond to the position of the third surface 1023.

[0166] In some embodiments, please refer to Figures 4 to 6 in conjunction with other drawings. Among them, Figure 6 is Figure 4 the enlarged view of the C position in. The longitudinal beam 10 includes a first extension portion 12 extending along the second direction Y outside the cross beam 20, and a sixth surface 103 is provided between the cross beam 20 and the first extension portion 12. In a cross-section parallel to the first direction X and the second direction Y, the sixth surface 103 extends along a concave arc.

[0167] Understandably, the longitudinal beam 10 extends along the second direction Y outside the cross beam 20 to form a first extension portion 12 outside the cross beam 20.

[0168] It can also be understood that the longitudinal beam 10 includes a main body portion 11 and a first extension portion 12. The first extension portion 12 and the main body portion 11 are distributed along the second direction Y and are connected. A plurality of cross beams 20 are arranged at intervals along the second direction Y between the main body portions 11 of the two longitudinal beams 10, so that adjacent two cross beams 20 and the main body portions 11 of the two longitudinal beams 10 enclose a first space 101. Among them, the main body portion 11 may include the above-mentioned first wall 111, second wall 112, third wall 21, fourth wall 22, fifth wall 113 and sixth wall 23. The first extension portion 12 may also be provided with the above-mentioned first wall 111, second wall 112, third wall 21, fourth wall 22, fifth wall 113 and sixth wall 23.

[0169] The sixth surface 103 is disposed between the cross beam 20 and the first extension portion 12, which means that the sixth surface 103 is disposed at the connection position between the first extension portion 12 and the cross beam 20 and is located between the longitudinal beam 10 and the cross beam 20. It can be understood that a connection structure may be formed between the longitudinal beam 10 and the cross beam 20, and the sixth surface 103 is disposed on the connection structure. Among them, the connection structure may be disposed on the first extension portion 12; it may also be disposed on the cross beam 20; it may also be partially disposed on the first extension portion 12 and partially disposed on the cross beam 20.

[0170] In a cross-section parallel to the first direction X and the second direction Y, the sixth surface 103 extends along a concave arc, which means that in a cross-section parallel to the first direction X and the second direction Y, the sixth surface 103 is substantially a concave arc, and concave means that the sixth surface 103 is recessed toward the inside of the floor skeleton 400. That is, the sixth surface 103 is substantially a concave arc surface.

[0171] With such a setting, an arc transition can be realized between the first extension portion 12 and the cross beam 20, so as to improve the problem of stress concentration between the first extension portion 12 and the cross beam 20, improve the structural strength of the floor skeleton 400, and improve the collision strength and torsional stiffness of the floor skeleton 400. In addition, the risk of cracking during the forming process of the floor skeleton 400 can also be reduced.

[0172] In some embodiments, please refer to Figure 4 and Figure 6 , and in combination with other drawings. In a cross-section parallel to the first direction X and the second direction Y, the sixth surface 103 is connected to a seventh surface 104, and the seventh surface 104 extends along a straight line and intersects the first direction X and the second direction Y respectively.

[0173] It can be understood that the seventh surface 104 is substantially located between the first extension portion 12 and the cross beam 20.

[0174] Such as Figure 4 and Figure 6As shown, on the cross-section parallel to the first direction X and the second direction Y, the seventh surface 104 extends linearly, which means that on the cross-section parallel to the first direction X and the second direction Y, the seventh surface 104 is substantially a line segment. That is, the seventh surface 104 is substantially a plane.

[0175] As Figure 4 and Figure 6 shown, on the cross-section parallel to the first direction X and the second direction Y, the seventh surface 104 intersects the first direction X, and the seventh surface 104 intersects the second direction Y, which means that on the cross-section parallel to the first direction X and the second direction Y, the line segment where the seventh surface 104 is located has a third end close to the crossbeam 20 and a fourth end far from the crossbeam 20. In the direction where the fourth end points to the third end along the second direction Y, the line segment where the seventh surface 104 is located extends along the first direction X away from the first extension portion 12, so as to be tapered along the first direction X, that is, the fourth end extends along the second direction Y towards the third end. In this way, the cross-sectional area perpendicular to the third direction Z of the connection part between the first extension portion 12 and the crossbeam 20 can be increased. And, the seventh surface 104 is substantially a plane, which can improve the problem of stress concentration between the first extension portion 12 and the crossbeam 20 caused by the different extension directions of the first extension portion 12 and the crossbeam 20.

[0176] With such a setting, the connection strength between the first extension portion 12 and the crossbeam 20 can be increased, so as to improve the structural strength of the floor skeleton 400, and improve the collision strength and torsional stiffness of the rear floor.

[0177] Among them, the seventh surface 104 intersects the first direction X, and the seventh surface 104 intersects the second direction Y, which can also be understood and explained in the same way as the intersection of the first surface 1021 and the first direction X, and will not be elaborated here one by one.

[0178] In some embodiments, please refer to Figure 4 and Figure 6 , and in combination with other drawings. On the side of the crossbeam 20 close to the first extension portion 12 along the second direction Y, there is an eighth surface 105. On the cross-section parallel to the first direction X and the second direction Y, a ninth surface 106 is connected between the eighth surface 105 and the seventh surface 104, and the ninth surface 106 extends along a concave arc, and the seventh surface 104 is connected between the ninth surface 106 and the sixth surface 103.

[0179] Among them, the eighth surface 105 can be a plane or a curved surface. As an example, as Figure 4 and Figure 6 shown, on the cross-section parallel to the first direction X and the second direction Y, the eighth surface 105 extends linearly, so that the eighth surface 105 is substantially a line segment. In this way, the eighth surface 105 is substantially a plane.

[0180] As an example, asFigure 4 and Figure 6 As shown in Figure 6 , on the cross-section parallel to the first direction X and the second direction Y, the line segment where the eighth surface 105 is located is substantially parallel to the first direction X.

[0181] On the cross-section parallel to the first direction X and the second direction Y, the ninth surface 106 extends along a concave arc, which means that on the cross-section parallel to the first direction X and the second direction Y, the ninth surface 106 is substantially a concave arc, and concave means that the ninth surface 106 is recessed towards the inside of the floor skeleton 400. That is, the ninth surface 106 is substantially a concave arc surface.

[0182] Understandably, on the cross-section parallel to the first direction X and the second direction Y, as Figure 4 and Figure 6 shown, the sixth surface 103, the seventh surface 104, the ninth surface 106 and the eighth surface 105 are distributed and connected in sequence. Specifically, on the cross-section parallel to the first direction X and the second direction Y, as Figure 4 and Figure 6 shown, the seventh surface 104 is disposed between the sixth surface 103 and the ninth surface 106, and the third end of the line segment where the seventh surface 104 is located is connected to the ninth surface 106, and the fourth end of the line segment where the seventh surface 104 is located is connected to the sixth surface 103.

[0183] With such a setting, the arc transition between the sixth surface 103 and the seventh surface 104 can be realized, and moreover, the arc transition between the seventh surface 104 and the eighth surface 105 can be realized through the ninth surface 106. In this way, the problem of stress concentration between the first extension portion 12 and the cross beam 20 can be improved, the connection strength between the first extension portion 12 and the cross beam 20 can be increased, so as to improve the structural strength of the floor skeleton 400, and the collision strength and torsional stiffness of the rear floor can be improved. In addition, the risk of cracking during the forming process of the floor skeleton 400 can also be reduced.

[0184] In some embodiments, please refer to Figure 4 and Figure 6 together, and in combination with other drawings. On the cross-section parallel to the first direction X and the second direction Y, the sixth surface 103 is a rounded corner.

[0185] With such a setting, it is convenient for the arc transition between the sixth surface 103 and the seventh surface 104, so as to facilitate the arc transition between the first extension portion 12 and the cross beam 20.

[0186] In some embodiments, please refer to Figure 4 and Figure 6 together, and in combination with other drawings. On the cross-section parallel to the first direction X and the second direction Y, the ninth surface 106 is a rounded corner.

[0187] With such a setting, it is convenient to achieve an arc transition between the seventh surface 104 and the eighth surface 105 through the ninth surface 106, so as to facilitate the arc transition between the first extension portion 12 and the cross beam 20.

[0188] By adopting the above technical solution, it is convenient to improve the problem of stress concentration of the floor skeleton 400, improve the structural strength of the floor skeleton 400, so as to improve the collision strength and torsional stiffness of the floor skeleton 400. In addition, the risk of cracking during the forming process of the floor skeleton 400 can be reduced.

[0189] In some embodiments, please refer to Figure 4 , and in combination with other drawings. The longitudinal beam 10 includes a second extension portion 13 extending outside the cross beam 20 along the second direction Y, and the second extension portions 13 of the two longitudinal beams 10 are arranged to gradually expand away from the cross beam 20 along the second direction Y.

[0190] It can be understood that the longitudinal beam 10 extends outside the cross beam 20 along the second direction Y to form a second extension portion 13 outside the cross beam 20.

[0191] It can also be understood that the longitudinal beam 10 includes a main body portion 11 and a second extension portion 13, and the second extension portion 13 and the main body portion 11 are distributed and connected along the second direction Y. A plurality of cross beams 20 are arranged at intervals along the second direction Y between the main body portions 11 of the two longitudinal beams 10, so that the adjacent two cross beams 20 and the main body portions 11 of the two longitudinal beams 10 enclose a first space 101. Among them, the main body portion 11 may include the above-mentioned first wall 111, second wall 112, third wall 21, fourth wall 22, fifth wall 113 and sixth wall 23. The second extension portion 13 may also be provided with the above-mentioned first wall 111, second wall 112, third wall 21, fourth wall 22, fifth wall 113 and sixth wall 23.

[0192] In some possible designs, as Figure 4 shown, and in combination with other drawings. The first extension portion 12 and the second extension portion 13 are respectively arranged at opposite ends of the main body portion 11 along the second direction Y.

[0193] The second extension portions 13 of the two longitudinal beams 10 are arranged to gradually expand away from the cross beam 20 along the second direction Y, which means that in the direction where the second extension portion 13 is away from the main body portion 11 along the second direction Y, the distance between the second extension portions 13 of the two longitudinal beams 10 in the first direction X gradually increases.

[0194] With such a setting, it is convenient to accommodate and position components such as the powertrain 300 of the vehicle 1000 between the second extension portions 13 of the two longitudinal beams 10.

[0195] In some embodiments, please refer to Figure 4and in combination with other attached drawings. On one side of the two second extension parts 13 facing each other, there is a tenth surface 107. The tenth surface 107 is arranged to gradually expand away from the cross beam 20 along the second direction Y, and the included angle formed by the tenth surface 107 and the second direction Y is [10°, 35°].

[0196] Understandably, on one side of one of the second extension parts 13 facing the other second extension part 13 along the first direction X, there is a tenth surface 107, and on one side of the other second extension part 13 facing one of the second extension parts 13 along the first direction X, there is a tenth surface 107. That is, both of the two second extension parts 13 are provided with the above-mentioned tenth surface 107.

[0197] The tenth surface 107 is arranged to gradually expand away from the cross beam 20 along the second direction Y, which means that in the direction where the second extension part 13 is away from the main body part 11 along the second direction Y, the tenth surface 107 extends away from the other second extension part 13 along the first direction X, so that the two tenth surfaces 107 are arranged to gradually expand.

[0198] The included angle formed by the tenth surface 107 and the second direction Y is the first included angle β. Specifically, in a cross-section parallel to the first direction X and the second direction Y, in the direction where the second extension part 13 is away from the main body part 11 along the second direction Y, the line segment where the tenth surface 107 is located is arranged to gradually expand, and the line segment where the tenth surface 107 is located or the extension line of the line segment where the tenth surface 107 is located forms the first included angle β with the second direction Y.

[0199] Understandably, 10° ≤ the first included angle β ≤ 35°. Specifically, the first included angle β can be 10°, 15°, 20°, 25°, 30°, 35°, etc.

[0200] With such an arrangement, the tenth surface 107 is arranged to gradually expand away from the cross beam 20 along the second direction Y, and the tenth surface 107 forms a more appropriate included angle with the second direction Y. On the one hand, it can make the connection strength between the second extension part 13 and the cross beam 20 relatively large, so that the floor skeleton 400 has relatively large structural strength. On the other hand, it makes the distance between the second extension parts 13 of the two longitudinal beams 10 relatively large, which is convenient for accommodating and limiting components such as the power assembly 300 of the vehicle 1000.

[0201] In some embodiments, please refer to Figure 4 and in combination with other attached drawings. The included angle formed by the tenth surface 107 and the second direction Y is [20°, 30°].

[0202] Understandably, 20° ≤ the first included angle β ≤ 30°. Specifically, the first included angle β can be 20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29°, 30°, etc.

[0203] With such a setting, the tenth surface 107 is gradually expanded along the second direction Y away from the cross beam 20, and a suitable included angle is formed between the tenth surface 107 and the second direction Y. On the one hand, it can make the connection strength between the second extension part 13 and the cross beam 20 relatively large, so that the floor skeleton 400 has relatively large structural strength. On the other hand, it makes the distance between the second extension parts 13 of the two longitudinal beams 10 relatively large, which is convenient for accommodating and positioning components such as the powertrain 300 of the vehicle 1000.

[0204] In some embodiments, please refer to Figure 2 and Figure 4 together, and in combination with other drawings. A plurality of hole assemblies 109 are provided on the floor skeleton 400, and the plurality of hole assemblies 109 are spaced along the second direction Y. The plurality of hole assemblies 109 are used for selectively connecting to the vehicle body. The hole assembly 109 includes a plurality of connection holes 1091, and the plurality of connection holes 1091 of the hole assembly 109 are spaced along the first direction X. Among them, the above-mentioned connection holes 1091 can be provided on the cross beam 20. The above-mentioned connection holes 1091 can also be provided on the longitudinal beam 10. The above-mentioned connection holes 1091 can also be provided between the cross beam 20 and the longitudinal beam 10.

[0205] The connection hole 1091 refers to the hole position on the floor skeleton 400 for connecting to the vehicle body.

[0206] By providing a plurality of hole assemblies 109 on the floor skeleton 400, and the plurality of hole assemblies 109 are used for selectively connecting to the vehicle body, the floor skeleton 400 can be applied to a plurality of different models of vehicle bodies. Specifically, according to different models of vehicle bodies, the corresponding hole assemblies 109 on the floor skeleton 400 can be connected to the vehicle body. In this way, the versatility of the floor skeleton 400 can be improved.

[0207] In addition, the setting of the connection holes 1091 can achieve the weight reduction effect of the floor skeleton 400, thereby realizing the lightweight design of the floor skeleton 400.

[0208] In some embodiments, the rear floor further includes a floor body, and the floor body is connected to the cross beam 20 and the longitudinal beam 10.

[0209] With such a setting, the rear floor formed by the floor skeleton 400 and the floor body has relatively large structural strength.

[0210] In some embodiments, the longitudinal beam 10 and / or the cross beam 20 are provided with weight reduction holes.

[0211] It can be understood that weight reduction holes can be provided on the longitudinal beam 10. Weight reduction holes can also be provided on the cross beam 20. Weight reduction holes can also be provided between the longitudinal beam 10 and the cross beam 20.

[0212] As an example, the weight reduction holes can be provided at the position between the longitudinal beam 10 and the cross beam 20.

[0213] Among them, the weight-reducing holes may include, but are not limited to, the above-mentioned connecting holes 1091.

[0214] With such a setting, the weight reduction of the floor skeleton 400 can be achieved to realize the lightweight design of the floor skeleton 400.

[0215] Please refer to Figure 1 and Figure 2 , and in combination with other attached drawings. The vehicle 1000 provided by the embodiment of the present application includes a rear floor. Among them, the rear floor in this embodiment is the same as the rear floor in the previous embodiment. For specific details, please refer to the relevant description of the rear floor in the previous embodiment, which will not be elaborated here.

[0216] The vehicle 1000 provided by the embodiment of the present application can improve the structural strength of the rear floor by adopting the above-mentioned rear floor, so as to improve the structural strength of the vehicle 1000.

[0217] As one of the embodiments of the present application, as Figures 2 to 5 shown, the rear floor includes a floor skeleton 400, and the floor skeleton 400 is integrally hot-stamped and formed. The floor skeleton 400 includes two longitudinal beams 10 and a plurality of cross beams 20. The two longitudinal beams 10 are arranged at intervals along the first direction X, and the plurality of cross beams 20 are arranged at intervals along the second direction Y between the two longitudinal beams 10. An adjacent two cross beams 20 and two longitudinal beams 10 enclose a first space 101, and the first space 101 has an inner peripheral surface 102. The inner peripheral surface 102 includes a first surface 1021, a second surface 1022, a third surface 1023, a fourth surface 1024, and a fifth surface 1025. The first surface 1021 is arranged between the longitudinal beam 10 and the cross beam 20, the fourth surface 1024 is arranged on the longitudinal beam 10, and the fifth surface 1025 is arranged on the cross beam 20. In a cross-section parallel to the first direction X and the second direction Y, the first surface 1021 extends linearly and intersects the first direction X and the second direction Y respectively. In a cross-section parallel to the first direction X and the second direction Y, the second surface 1022 is a fillet and is connected between the fourth surface 1024 and the first surface 1021. In a cross-section parallel to the first direction X and the second direction Y, the third surface 1023 is a fillet and is connected between the fifth surface 1025 and the third surface 1023. Among them, the first direction X and the second direction Y are perpendicular.

[0218] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rear floor, characterized in that, Comprising an integrally formed floor skeleton, the floor skeleton comprising: Two longitudinal beams, spaced apart in a first direction; A plurality of cross beams, spaced apart in a second direction between the two longitudinal beams; an inner peripheral surface disposed circumferentially is formed by enclosing two adjacent cross beams and two longitudinal beams, and the inner peripheral surface includes a first surface disposed between the longitudinal beam and the cross beam; in a cross-section parallel to the first direction and the second direction, the first surface extends linearly and intersects the first direction and the second direction respectively; Wherein, the first direction and the second direction intersect.

2. The rear floor according to claim 1, characterized in that, In a cross-section parallel to the first direction and the second direction, a second surface is connected to one end of the first surface close to the longitudinal beam, and the second surface extends along a concave arc; And / or, in a cross-section parallel to the first direction and the second direction, a third surface is connected to one end of the first surface close to the cross beam, and the third surface extends along a concave arc.

3. The rear floor according to claim 2, characterized in that, The inner peripheral surface further includes a fourth surface disposed on the longitudinal beam; in a cross-section parallel to the first direction and the second direction, the second surface is connected between the fourth surface and the first surface; And / or, the inner peripheral surface further includes a fifth surface disposed on the cross beam; in a cross-section parallel to the first direction and the second direction, the third surface is connected between the fifth surface and the first surface.

4. The rear floor according to claim 2 or 3, characterized in that In a cross-section parallel to the first direction and the second direction, the second surface and / or the third surface is a rounded corner.

5. The rear floor according to any one of claims 2-4, characterized in that, The inner peripheral surface includes four of the first surfaces, and the first surfaces are disposed between each cross beam and each longitudinal beam; in a cross-section parallel to the first direction and the second direction, the second surface and the third surface are respectively connected to opposite ends of each of the first surfaces.

6. The rear floor according to any one of claims 1-5, characterized in that, The longitudinal beam includes a first wall and a second wall connected to the first wall, the cross beam includes a third wall and a fourth wall connected to the third wall, the third wall is connected to the first wall, and the fourth wall is connected to the second wall; the second wall is bent towards the same side in a third direction relative to the first wall, and the fourth wall is bent towards the same side in the third direction relative to the third wall; The first space is formed by enclosing the fourth walls of two adjacent cross beams and the second walls of two longitudinal beams, and the inner peripheral surface is disposed on the second wall and the fourth wall; Wherein, the third direction intersects the first direction and the second direction, and the first direction, the second direction and the third direction are not in the same plane.

7. The rear floor according to claim 6, characterized in that, In the third direction, the dimension by which the second wall protrudes beyond the first wall is [40 mm, 140 mm]; and / or, in the third direction, the dimension by which the fourth wall protrudes beyond the third wall is [40 mm, 140 mm].

8. The rear floor according to claim 7, characterized in that, In the third direction, the dimension by which the second wall protrudes beyond the first wall is [60 mm, 90 mm]; and / or, in the third direction, the dimension by which the fourth wall protrudes beyond the third wall is [60 mm, 90 mm].

9. The rear floor according to any one of claims 6-8, characterized in that, The longitudinal beam further includes a fifth wall, the fifth wall is connected to one end of the second wall away from the first wall, and is bent relative to the second wall; the cross beam further includes a sixth wall, the sixth wall is connected to one end of the fourth wall away from the third wall, and is bent relative to the fourth wall.

10. The rear floor according to claim 9, characterized in that, The fifth wall and / or the sixth wall is provided with a notch, and at least part of the notch is arranged corresponding to the first surface in position.

11. The rear floor according to any one of claims 1-10, characterized in that, The longitudinal beam includes a first extension portion extending along the second direction outside the cross beam, and a sixth surface is provided between the cross beam and the first extension portion; in a cross section parallel to the first direction and the second direction, the sixth surface extends along a concave arc.

12. The rear floor according to claim 11, characterized in that, In a cross section parallel to the first direction and the second direction, a seventh surface is connected to the sixth surface, the seventh surface extends linearly, and intersects the first direction and the second direction respectively.

13. The rear floor according to claim 12, characterized in that, One side of the cross beam close to the first extension portion along the second direction is provided with an eighth surface; in a cross section parallel to the first direction and the second direction, a ninth surface is connected between the eighth surface and the seventh surface, the ninth surface extends along a concave arc, and the seventh surface is connected between the ninth surface and the sixth surface.

14. The rear floor according to claim 13, characterized in that, In a cross section parallel to the first direction and the second direction, the sixth surface and / or the ninth surface is a rounded corner.

15. The rear floor according to any one of claims 1-14, characterized in that, The longitudinal beam includes a second extension portion extending along the second direction outside the cross beam, and the second extension portions of the two longitudinal beams are gradually widened along the second direction away from the cross beam; One side of the two second extension portions facing each other is provided with a tenth surface, the tenth surface is gradually widened along the second direction away from the cross beam, and the included angle formed by the tenth surface and the second direction is [10°, 35°].

16. The rear floor according to claim 15, characterized in that, The included angle formed by the tenth surface and the second direction is [20°, 30°].

17. The rear floor according to any one of claims 1-16, characterized in that, A plurality of hole assemblies are arranged on the floor skeleton at intervals along the second direction, and the plurality of hole assemblies are used to selectively connect to the vehicle body; the hole assembly includes a plurality of connection holes arranged at intervals along the first direction, and the connection holes are provided on the cross beam and / or the longitudinal beam.

18. The rear floor according to any one of claims 1-17, characterized in that, The rear floor further includes a floor body, and the floor body is connected to the cross beam and the longitudinal beam.

19. The rear floor according to any one of claims 1-18, characterized in that, The longitudinal beam and / or the cross beam is provided with a weight-reducing hole.

20. A vehicle, characterized in that, Including the rear floor according to any one of claims 1-19.

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