Rear floor framework and vehicle

Abstract

The utility model provides a rear floor framework and a vehicle. The rear floor framework comprises a front framework, and rear floor longitudinal beam front sections arranged on the left side and the right side respectively and a rear floor cross beam connected between the rear floor longitudinal beam front sections on the two sides are formed on the front framework. The rear floor longitudinal beam rear sections are connected with the rear ends of the rear floor longitudinal beam front sections on the two sides respectively, the bottoms of the front ends of the rear floor longitudinal beam rear sections on the two sides are connecting pieces formed in a die-casting mode, and the connecting pieces on the sides are connected with the rear ends of the rear floor longitudinal beam front sections on the same sides. According to the rear floor framework, the use number of parts can be reduced, manufacturing of the rear floor framework is facilitated, meanwhile, the rear floor framework has good structural strength, the overall rigidity of the rear portion of a vehicle body can be improved, and then the collision safety of the whole vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle bodies, in particular to a rear floor skeleton. At the same time, the utility model also relates to a vehicle provided with the rear floor skeleton. Background Art

[0002] The rear floor of an automobile is an important part of the vehicle body. In addition to having a certain load-bearing function, it also needs to effectively disperse and absorb collision energy during a rear collision, reduce the deformation and collapse of the occupant compartment, and play an important role in reducing passenger injuries. Therefore, the structural performance of the rear floor of an automobile plays an important role in the vehicle.

[0003] As the core part of the vehicle rear floor, during the manufacturing process, the rear floor skeleton is generally a sheet metal welded structure formed by welding multiple sheet metal parts through spot welding technology. It is not convenient for processing and manufacturing, and it is also easy for the overall rear floor to be affected by the connection performance of the solder joints, resulting in insufficient connection strength of the local structure. Therefore, traditional rear floor skeletons usually have problems such as many components, large weight, inconvenient processing and manufacturing, and are not conducive to improving the strength of the rear floor skeleton, which affects the improvement of the vehicle's overall collision safety. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a rear floor skeleton with good collision safety.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A rear floor skeleton includes a front skeleton, and rear floor longitudinal beam front sections are formed on the front skeleton and are respectively arranged on the left and right sides, and a rear floor cross beam is connected between the rear floor longitudinal beam front sections on both sides;

[0007] It also includes rear floor longitudinal beam rear sections respectively connected to the rear ends of the rear floor longitudinal beam front sections on both sides, and the bottoms of the front ends of the rear floor longitudinal beam rear sections on both sides are connectors formed by die casting, and each connector is connected to the rear end of the rear floor longitudinal beam front section on the same side.

[0008] Furthermore, a front subframe mounting point and a shock absorber spring mounting point are provided at the bottom of the rear floor longitudinal beam front section, and a rear subframe mounting point is provided on the connector.

[0009] Further, the cross-sections of the front sections of the rear floor longitudinal beams on both sides are both in an "E" shape with an opening towards the outside of the vehicle in the left-right direction of the whole vehicle, and longitudinal beam reinforcing ribs arranged in the up-down direction of the whole vehicle are respectively provided in the front sections of the rear floor longitudinal beams; the longitudinal beam reinforcing ribs in the front sections of the rear floor longitudinal beams are multiple and arranged at intervals in the front-rear direction of the whole vehicle, and longitudinal beam reinforcing ribs are provided above both the front mounting point of the subframe and the shock absorber spring mounting point.

[0010] Further, some of the connecting members are in a box shape, and a cavity is formed inside the connecting members. The rear mounting point of the subframe is located in the cavity, and a subframe mounting point reinforcing rib is provided in the cavity; the subframe mounting point reinforcing rib is radially arranged with the rear mounting point of the subframe as the center.

[0011] Further, a seat belt mounting point is provided on at least one side of the front section of the rear floor longitudinal beam; and / or, an inner panel of the rear wheel housing is formed on the front frame and is respectively connected to the front sections of the rear floor longitudinal beams on both sides, and a rear shock absorber mounting point is respectively provided on the inner panel of the rear wheel housing on each side.

[0012] Further, the rear floor cross beam includes a middle rear floor cross beam and an upper rear floor cross beam connected between the front sections of the rear floor longitudinal beams on both sides, and a rear rear floor cross beam located between the two connecting members is connected between the rear sections of the rear floor longitudinal beams on both sides.

[0013] Further, an installation boss protruding forward in the front-rear direction of the whole vehicle is provided on the middle rear floor cross beam, and a seat mounting point is provided on the installation boss; and / or, a skeleton panel is formed on the front frame and is connected between the front sections of the rear floor longitudinal beams on both sides, and between the middle rear floor cross beam and the upper rear floor cross beam, and a plurality of protruding ribs are provided on the skeleton panel.

[0014] Further, the rear rear floor cross beam is made of an extruded profile, and a plurality of cavities arranged in the left-right direction of the whole vehicle are separated inside the rear rear floor cross beam; and / or, the rear section of each rear floor longitudinal beam includes a plurality of steel sheet metals that are snap-connected together. Each connecting member on each side is connected to at least part of the steel sheet metals on the same side, and a cavity of the rear longitudinal beam section is jointly formed by the plurality of steel sheet metals on each side and the connecting member.

[0015] Further, the front frame is integrally die-cast; and / or, the front frame and the connecting members on both sides are made of aluminum alloy.

[0016] Compared with the prior art, the present utility model has the following advantages:

[0017] The rear floor skeleton of the present utility model is combined with the front skeleton and the die-cast connecting piece, which can reduce the number of parts of the rear floor skeleton, facilitate its preparation, and at the same time utilize the characteristics of high structural strength of die-casting to improve the structural strength of the rear floor skeleton, which is beneficial to enhancing the overall stiffness of the rear part of the vehicle body and further enhancing the collision safety of the whole vehicle.

[0018] Moreover, the rear subframe mounting points are respectively located on the front section of the die-cast rear floor longitudinal beam and the connecting piece, which can ensure the stiffness of the rear subframe mounting position and the stability of the rear subframe installation. The cross-sections of the front sections of both sides of the rear floor longitudinal beam are in the shape of "E", and combined with the longitudinal beam reinforcing ribs arranged along the up and down direction of the whole vehicle, each front section of the rear floor longitudinal beam can have good bending resistance, which is beneficial to enhancing the overall strength of the rear floor skeleton structure. At the same time, the longitudinal beam reinforcing ribs are multiple and arranged at intervals along the front and rear direction of the whole vehicle, and longitudinal beam reinforcing ribs are provided above the front mounting point of the subframe and the shock absorber mounting point, and the longitudinal beam reinforcing ribs can be used to enhance the structural strength of each mounting point position.

[0019] In addition, part of the connecting piece is in a box shape and forms a cavity, and at the same time the rear mounting point of the subframe is located in the cavity, and the subframe mounting point reinforcing ribs are arranged in a radial shape, which can further improve the stiffness of the rear mounting point position of the subframe. Seat belt mounting points are provided on the front section of the rear floor longitudinal beam, and rear shock absorber mounting points are respectively provided on the inner plates of each side rear wheel cover, which is convenient for the installation and arrangement of the seat belt and the rear shock absorber. On the premise of integrally die-casting the front skeleton, compared with the traditional technology, it can prevent the reduction of the structural strength of each mounting point position caused by using too many connection points, and thus can improve the stiffness of the seat belt mounting point and the rear shock absorber mounting point.

[0020] Secondly, the rear floor cross beam includes the rear floor middle cross beam and the rear floor upper cross beam, which can further reduce the number of rear floor parts, facilitate processing and preparation, and enhance the structural strength. And by making the rear floor rear cross beam located between the two connecting pieces, the reliability of the connection setting of the rear floor rear cross beam can be ensured. Mounting bosses are provided on the rear floor middle cross beam, and seat mounting points are provided on the mounting bosses, which is convenient for the setting of the seat mounting points and can improve the stiffness of the seat mounting points.

[0021] In addition, the rear floor middle cross beam and the upper cross beam are connected by the skeleton panel, and raised ribs are provided on the skeleton panel, which is beneficial to enhancing the structural strength and load-bearing performance of the skeleton panel and further enhancing the overall stiffness of the front skeleton. The rear floor rear cross beam adopts an extruded profile, which is convenient for its preparation, and combined with the setting of multiple cavities in the rear floor rear cross beam, the structural strength of the rear floor rear cross beam can also be ensured.

[0022] Furthermore, the rear section of the rear floor longitudinal beam includes steel sheet metal, which is conducive to realizing the welding between the rear section of the rear floor longitudinal beam and surrounding components, reducing the impact on the assembly welding line operation, and ensuring the structural strength of the rear section of the rear floor longitudinal beam by forming the cavity of the rear section of the longitudinal beam. The front skeleton is integrally die-cast, with mature technology and can ensure the forming effect of the front skeleton. The front skeleton and the connecting piece are made of aluminum alloy, which is beneficial to their forming and helps to achieve lightweight.

[0023] Another object of the present invention is to provide a vehicle, in which the rear floor skeleton as described above is provided.

[0024] The vehicle of the present invention is provided with the above-mentioned rear floor skeleton, which is conducive to the processing and preparation of the rear part structure of the vehicle body and the improvement of the structural strength, so that the whole vehicle has good collision performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0026] Figure 1 is a schematic structural diagram when the rear floor skeleton described in the embodiment of the present invention is assembled with the vehicle body;

[0027] Figure 2 is a schematic structural diagram of the rear floor skeleton described in the embodiment of the present invention;

[0028] Figure 3 、 Figure 4 and Figure 7 are Figure 2 schematic structural diagrams of the structure shown in other perspectives;

[0029] Figure 5 is Figure 4 a cross-sectional view taken along the A-A direction in;

[0030] Figure 6 is Figure 5 an enlarged view of B in;

[0031] Figure 8 is a schematic structural diagram when the connecting piece described in the embodiment of the present invention is assembled with the rear section of the same-side rear floor longitudinal beam and the rear floor rear cross beam;

[0032] Figure 9 is a schematic structural diagram of the connecting piece described in the embodiment of the present invention;

[0033] Figure 10 is a schematic structural diagram of the rear floor rear cross beam described in the embodiment of the present invention;

[0034] Description of the reference numerals:

[0035] 10. Front skeleton

[0036] 11. Front section of the rear floor longitudinal beam; 11a. Bottom wall of the front section; 11b. Top wall of the front section; 11c. Side wall of the front section; 11d. Intermediate wall; 111. Seat belt mounting point; 112. Front mounting point of the subframe; 113. Mounting point of the shock absorber spring; 114. Longitudinal beam reinforcing rib; 115. Diagonal reinforcing rib; 116. Lower force transfer rib of the longitudinal beam; 117. Cross rib

[0037] 12. Middle cross beam of the rear floor; 121. Mounting boss; 122. Seat mounting point; 123. Cross rib

[0038] 13. Upper cross beam of the rear floor; 131. Corrugated reinforcing rib

[0039] 14. Inner panel of the rear wheel housing; 141. Mounting point of the rear shock absorber; 142. Outer reinforcing rib of the wheel housing; 143. Inner reinforcing rib of the wheel housing; 144. Diagonal force transfer rib

[0040] 15. Skeleton panel; 151. Raised rib

[0041] 20. Rear section of the rear floor longitudinal beam; 21. Steel sheet metal; 22. Cavity of the longitudinal beam rear section

[0042] 30. Connector; 31. Rear mounting point of the subframe; 32. Cavity boss; 33. Reinforcing rib for the subframe mounting point

[0043] 40. Rear cross beam of the rear floor; 41. Transverse rib; 42. Longitudinal rib

[0044] 50. Front cross beam of the rear floor; 60. Outer panel of the rear wheel housing; 70. Rear section of the sill beam Detailed implementation manners

[0045] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0046] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model 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 therefore cannot be construed as a limitation to the present utility model. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0047] Taking the vehicle where the rear floor skeleton described by the present utility model is located as an example, the orientation terms such as "up, down, left, right, front, and rear" used in the embodiments are defined based on the up-down direction (also known as the height direction or the vehicle body Z-direction), the left-right direction (also known as the width direction or the vehicle body Y-direction), and the front-rear direction (also known as the length direction or the vehicle body X-direction) of the vehicle. "Inside and outside" are defined based on the contour of the corresponding component. For example, "inside" and "outside" defined based on the vehicle contour, the side closer to the middle of the vehicle contour is "inside", and vice versa is "outside".

[0048] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; 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. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0049] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0050] Embodiment 1

[0051] This embodiment relates to a rear floor skeleton, which is not only conducive to preparation but also can improve the overall structural strength of the rear part of the vehicle body, thereby contributing to the improvement of the overall safety performance of the vehicle.

[0052] In terms of the overall structure, as Figure 1 shown, the rear floor skeleton of this embodiment includes a front skeleton 10, and on the front skeleton 10, there are formed front sections 11 of rear floor longitudinal beams respectively arranged on the left and right sides, and a rear floor cross beam connected between the front sections 11 of the rear floor longitudinal beams on both sides.

[0053] Moreover, the rear floor skeleton further includes rear sections 20 of rear floor longitudinal beams respectively connected to the rear ends of the front sections 11 of the rear floor longitudinal beams on both sides, and the bottoms of the front ends of the rear sections 20 of the rear floor longitudinal beams on both sides are connectors 30 formed by die-casting, and each connector 30 is connected to the rear end of the front section 11 of the rear floor longitudinal beam on the same side.

[0054] At this time, with the above settings, through the cooperation of the front skeleton 10 and the connectors 30 formed by die-casting, the number of components of the rear floor skeleton can be reduced, which is convenient for its preparation. At the same time, the characteristics of large structural strength of the die-casting structure can be utilized to improve the structural strength of the rear floor skeleton, which is beneficial to improving the overall stiffness of the rear part of the vehicle body, and further improving the vehicle collision safety.

[0055] Based on the above overall introduction, specifically speaking, the rear floor skeleton of this embodiment is an important part of the rear floor assembly of the vehicle body. During specific implementation, still asFigure 1 As shown, in the rear floor assembly of the vehicle body, the front ends of the front sections 11 of the rear floor longitudinal beams in this embodiment are respectively connected to the rear sections 70 of the sill beams. A front cross beam 50 of the rear floor is connected between the rear sections 70 of the sill beams on both sides. In addition, on the outer sides facing the outside of the vehicle of the inner panels 14 of the rear wheel housings on both the left and right sides, there are respectively provided structures such as outer panels 60 of the rear wheel housings. At the same time, for other related structures not mentioned in the rear floor assembly of the vehicle body, reference can be made to the vehicle body structures well-known to those skilled in the art, and details will not be elaborated here.

[0056] In this embodiment, as a preferred implementation form, the above-mentioned front skeleton 10 can also be integrally formed. A front mounting point 112 of the subframe and a mounting point 113 of the shock absorber spring are provided at the bottom of the front section 11 of the rear floor longitudinal beam, and a rear mounting point 31 of the subframe is provided on the connecting member 30. Here, by arranging the rear subframe mounting points on the front section 11 of the rear floor longitudinal beam formed by die casting and the connecting member 30 respectively, the stiffness of the rear subframe mounting position can be ensured, and the stability of the rear subframe mounting can be guaranteed.

[0057] During specific implementation, in this embodiment, as a preferred implementation form, in combination with Figures 4 to 6 As shown, the cross-sections of the front sections 11 of the rear floor longitudinal beams on both sides are in an "E" shape with an opening towards the outside of the vehicle in the left-right direction of the whole vehicle, and longitudinal beam reinforcing ribs 114 arranged in the up-down direction of the whole vehicle are respectively provided in each of the front sections 11 of the rear floor longitudinal beams. At the same time, the longitudinal beam reinforcing ribs 114 in each of the front sections 11 of the rear floor longitudinal beams are multiple and arranged at intervals in the front-rear direction of the whole vehicle, and longitudinal beam reinforcing ribs 114 are provided above both the front mounting point 112 of the subframe and the mounting point 113 of the shock absorber spring.

[0058] With such an arrangement, due to the cross-sections of the front sections 11 of the rear floor longitudinal beams on both sides being in an "E" shape and in combination with the longitudinal beam reinforcing ribs 114 arranged in the up-down direction of the whole vehicle, each of the front sections 11 of the rear floor longitudinal beams has good bending resistance, which is beneficial to improving the overall strength of the rear floor skeleton structure. At the same time, the longitudinal beam reinforcing ribs 114 are multiple and arranged at intervals in the front-rear direction of the whole vehicle, and longitudinal beam reinforcing ribs 114 are provided above both the front mounting point 112 of the subframe and the mounting point 113 of the shock absorber spring, so that the longitudinal beam reinforcing ribs 114 can be used to enhance the structural strength of each mounting point position.

[0059] It is worth mentioning that the cross-section of the front section 11 of the rear floor longitudinal beam being in an "E" shape does not mean it is exactly like the letter "E" in the strict sense, but rather means that its cross-section visually approximates an "E" shape and has a shape trend adapted to peripheral structures such as the inner panel 14 of the rear wheel housing and the upper cross beam 13 of the rear floor, etc.

[0060] Still as in Figure 4 and Figure 6As shown, in the specific structure, the front section 11 of the rear floor longitudinal beam includes a front bottom wall 11a, a front top wall 11b, and an intermediate wall 11d that are arranged at intervals in the up-and-down direction of the whole vehicle, as well as a front side wall 11c that connects the front bottom wall 11a, the front top wall 11b, and the intermediate wall 11d. At this time, the tops of multiple longitudinal beam stiffeners 114 are connected to the front top wall 11b, the bottoms of the multiple longitudinal beam stiffeners 114 are connected to the front bottom wall 11a, and the inner sides of the multiple longitudinal beam stiffeners 114 are connected to the front side wall 11c. At the same time, the multiple longitudinal beam stiffeners 114 all cross the intermediate wall 11d to form a cross-shaped stiffener. Moreover, the cooperative setting of the multiple longitudinal beam stiffeners 114, the front bottom wall 11a, the front top wall 11b, the front side wall 11c, and the intermediate wall 11d also forms multiple box-like structures, which can effectively improve the structural strength of the front section 11 of the rear floor longitudinal beam.

[0061] At the same time, in this embodiment, as a preferred implementation form, refer to Figure 9 As shown, a part of the connecting member 30 is in a box shape, and a cavity is formed inside the connecting member 30. The rear subframe mounting point 31 is located in the cavity, and a subframe mounting point stiffener 33 is provided in the cavity. And the subframe mounting point stiffener 33 is arranged in a radial shape with the rear subframe mounting point 31 as the center.

[0062] It can be understood that making a part of the connecting member 30 in a box shape and forming a cavity, while making the rear subframe mounting point 31 located in the cavity and arranging the subframe mounting point stiffener 33 in a radial shape can further improve the stiffness of the position of the rear subframe mounting point 31.

[0063] During specific implementation, a protruding cavity boss 32 is provided on one side of the connecting member 30 of this embodiment facing the cavity. The rear subframe mounting point 31 includes a rear subframe mounting hole formed in the middle of the cavity boss 32. The radially arranged subframe mounting point stiffener 33 is connected to the cavity boss 32 to achieve the purpose of improving the stiffness of the position of the rear subframe mounting point 31, and an installation sleeve can also be provided in the rear subframe mounting hole to facilitate connection with the rear part of the subframe.

[0064] In addition, in this embodiment, as a preferred implementation form, as Figure 2 shown, a seat belt mounting point 111 is provided on at least one side of the front section 11 of the rear floor longitudinal beam. At the same time, as a preferred implementation form, a rear wheelhouse inner panel 14 that is respectively connected to the front sections 11 of the rear floor longitudinal beams on both sides is formed on the front skeleton 10, and a rear shock absorber mounting point 141 is respectively provided on each side of the rear wheelhouse inner panel 14.

[0065] The front section 11 of the rear floor longitudinal beam is provided with a seat belt mounting point 111, and each inner panel 14 of the rear wheel housing on each side is provided with a rear shock absorber mounting point 141, which can facilitate the installation and arrangement of the seat belt and the rear shock absorber. On the premise that the front frame 10 is integrally die-cast, compared with the traditional technology, it can prevent the reduction of the structural strength of the positions of each mounting point due to the use of too many connection points. Therefore, the stiffness of the seat belt mounting point 111 and the rear shock absorber mounting point 141 can be improved.

[0066] During specific implementation, the front section 11 of each rear floor longitudinal beam on each side is preferably provided with a seat belt mounting point 111 to facilitate the arrangement and installation of the seat belt. The quantity and arrangement form of the above-mentioned rear shock absorber mounting points 141 can be set and adjusted according to the actual installation requirements of the rear shock absorber. For example, specifically, they can be Figure 3 two arranged at intervals along the front-rear direction of the whole vehicle as shown in the figure.

[0067] In addition, in this embodiment, as a preferred implementation form, in combination with Figures 1 to 3 , and Figure 8 as shown, the rear floor cross beam includes a rear floor middle cross beam 12 and a rear floor upper cross beam 13 connected between the front sections 11 of the rear floor longitudinal beams on both sides, and a rear floor rear cross beam 40 located between the two connecting parts 30 is connected between the rear sections 20 of the rear floor longitudinal beams on both sides.

[0068] Making the rear floor cross beam include the rear floor middle cross beam 12 and the rear floor upper cross beam 13 can further reduce the number of rear floor parts, facilitate processing and preparation, and improve the structural strength. And by making the rear floor rear cross beam 40 located between the two connecting parts 30, the reliability of the connection setting of the rear floor rear cross beam 40 can be ensured.

[0069] It is worth mentioning that the cross section of the connecting part 30 in this embodiment can be designed in a "ji" shape to have better structural strength. When specifically set, the connecting part 30 is also provided with a connecting portion extending towards the vehicle interior side, which is generally in a T-shaped design visually, and this connecting portion can facilitate the connection between the connecting part 30 and the rear floor rear cross beam 40.

[0070] Moreover, in this embodiment, as a preferred implementation form, still as Figure 2 shown, the rear floor middle cross beam 12 is provided with a mounting boss 121 protruding forward along the front-rear direction of the whole vehicle, and a seat mounting point 122 is provided on the mounting boss 121. Thus, it can facilitate the setting of the seat mounting point 122 and improve the stiffness of the seat mounting point 122.

[0071] In the specific structure of this embodiment, there may be two mounting bosses 121 arranged at intervals in the left-right direction of the whole vehicle. Seat mounting points 122 are provided on each mounting boss 121, which can help improve the mounting stability of the seat. Of course, in addition to being set to two, the seat mounting points 122 in this embodiment can also be set and adjusted accordingly according to the actual installation requirements of the seat. For example, there may be three arranged at intervals in the left-right direction of the whole vehicle. Furthermore, when necessary, a reinforcing rib structure connected to the position of the seat mounting point 122 can be provided on the mounting boss 121 to further improve the structural strength of the position of the seat mounting point 122.

[0072] Moreover, the specific structures of the mounting points such as the seat belt mounting point 111, the seat mounting point 122, the front mounting point 112 of the subframe, the shock absorber spring mounting point 113, and the rear shock absorber mounting point 141 in this embodiment can all refer to the relevant structures in the body structure well-known to those skilled in the art.

[0073] Secondly, in this embodiment, as a preferred implementation form, see Figure 3 and Figure 4 As shown, on the side of each rear wheelhouse inner panel 14 facing the outside of the vehicle, there are multiple wheelhouse outer reinforcing ribs 142 arranged in the up-down direction of the whole vehicle. The wheelhouse outer reinforcing ribs 142 are arranged at intervals in the front-rear direction of the whole vehicle, and some of the wheelhouse outer reinforcing ribs 142 are connected to the position of the rear shock absorber mounting point 141, and some of the wheelhouse outer reinforcing ribs 142 are arranged vertically corresponding to the longitudinal beam reinforcing rib 114 on the same side.

[0074] At this time, see Figure 2 and Figure 5 As shown, on the side of each rear wheelhouse inner panel 14 facing the inside of the vehicle, there are multiple wheelhouse inner reinforcing ribs 143 arranged in the up-down direction of the whole vehicle. The wheelhouse inner reinforcing ribs 143 are arranged at intervals in the front-rear direction of the whole vehicle, and the bottom of each wheelhouse inner reinforcing rib 143 is connected to the front section of the rear floor longitudinal beam 11, and some of the wheelhouse inner reinforcing ribs 143 are connected to the position of the rear shock absorber mounting point 141.

[0075] By cooperatively arranging the wheelhouse outer reinforcing rib 142 and the wheelhouse inner reinforcing rib 143, the structural strength of the rear wheelhouse inner panel 14 can be enhanced. At the same time, some of the wheelhouse outer reinforcing ribs 142 are connected to the position of the rear shock absorber mounting point 141, some of the wheelhouse inner reinforcing ribs 143 are connected to the position of the rear shock absorber mounting point 141, some of the wheelhouse outer reinforcing ribs 142 are arranged vertically corresponding to the longitudinal beam reinforcing rib 114 on the same side, and the bottom of each wheelhouse inner reinforcing rib 143 is connected to the front section of the rear floor longitudinal beam 11, which can also help improve the structural strength of the position of the rear shock absorber mounting point 141 and the connection strength between the rear wheelhouse inner panel 14 and the longitudinal beam reinforcing rib 114 on the same side.

[0076] In this embodiment, during specific implementation, as a preferred implementation form, on the side facing outside of each inner panel 14 of the rear wheelhouse, there is an inclined force transmission rib 144 connected to the position of the rear shock absorber mounting point 141. The inclined force transmission rib 144 is connected to the outer wheelhouse reinforcing rib 142. Thus, it is beneficial to further enhance the structural strength of the inner panel 14 of the rear wheelhouse and the position of the rear shock absorber mounting point 141.

[0077] Also as a preferred implementation form, in this embodiment, continue to refer to Figure 4 As shown, at the front end inside each front section 11 of the rear floor longitudinal beam, there is an inclined reinforcing rib 115, and the inclined reinforcing rib 115 forms a plurality of triangular frame structures inside the front section 11 of the rear floor longitudinal beam. The main advantage of such a setting is that the high stability of the triangular structure can be utilized to enhance the structural strength.

[0078] Of course, the specific number of the above-mentioned reinforcing ribs such as the outer wheelhouse reinforcing rib 142, the inner wheelhouse reinforcing rib 143, the inclined force transmission rib 144, and the inclined reinforcing rib 115 can be set and adjusted according to the actual strength requirements of the relevant structure. For example, at least one inclined force transmission rib 144 is connected to the positions of two shock absorber mounting points respectively, and adjacent two inclined force transmission ribs 144 are connected, etc.

[0079] In addition, in combination with Figure 3 and Figure 7 As shown, in this embodiment, as a preferred implementation form, at the bottom of each front section 11 of the rear floor longitudinal beam, there are several longitudinal beam lower force transmission ribs 116 extending along the front - rear direction of the whole vehicle. The rear end of the longitudinal beam lower force transmission rib 116 is connected to the position of the shock absorber spring mounting point 113, and the front end of the longitudinal beam lower force transmission rib 116 extends to the connection point between the front section 11 of the rear floor longitudinal beam and the rear floor middle cross - beam 12.

[0080] Moreover, each front section 11 of the rear floor longitudinal beam has a corner position that arches upward along the up - down direction of the whole vehicle. The rear floor upper cross - beam 13 is located between the two corner positions, and at the bottom of the corner position, there is a cross - rib 117 that is cross - connected to the longitudinal beam lower force transmission rib 116.

[0081] The main advantage of such a setting is that it is beneficial to improve the force transmission performance of the front section 11 of the rear floor longitudinal beam and the structural strength of the position of the shock absorber spring mounting point 113. At the same time, the setting of the cross - rib 117 can, on the basis of the longitudinal beam lower force transmission rib 116, further enhance the structural strength of the corner position, thereby ensuring the structural performance of the front section 11 of the rear floor longitudinal beam.

[0082] During specific implementation, the number and arrangement form of the longitudinal beam lower force transmission ribs 116 in this embodiment can also be set and adjusted accordingly according to the actual force transmission requirements of the front section 11 of the rear floor longitudinal beam. For example, it can be three arranged at intervals along the left - right direction of the whole vehicle, etc.

[0083] In addition, as a preferred implementation form, in combination with Figure 2 , Figure 3 and Figure 7 As shown, in this embodiment, a beam cavity is formed at the bottom of at least one of the rear floor middle cross beam 12 and the rear floor upper cross beam 13. A beam reinforcing rib is provided in the beam cavity, and the beam reinforcing rib includes at least one of a cross-shaped rib 123 and a wavy reinforcing rib 131 extending in the left-right direction of the vehicle. In this way, good structural strength can be achieved for each floor cross beam.

[0084] Of course, in specific implementation, different types of reinforcing ribs can be set according to the actual structural strengthening requirements of the rear floor cross beam. For example, cross-shaped ribs 123 and wavy reinforcing ribs 131 arranged at intervals in the front-rear direction of the vehicle are provided in the beam cavity of the rear floor middle cross beam 12, and wavy reinforcing ribs 131 are provided in the beam cavity of the rear floor upper cross beam 13, etc.

[0085] At this time, also as a preferred implementation form, a skeleton panel 15 is formed on the front skeleton 10 of this embodiment and is connected between the front sections 11 of the rear floor longitudinal beams on both sides, the rear floor middle cross beam 12, and the rear floor upper cross beam 13, and a number of raised ribs 151 are provided on the skeleton panel 15.

[0086] It can be understood that by connecting the rear floor middle cross beam 12 and the upper cross beam through the skeleton panel 15 and providing raised ribs 151 on the skeleton panel 15, it is beneficial to enhance the structural strength and load-bearing performance of the skeleton panel 15, and further improve the overall stiffness of the front skeleton 10.

[0087] Specifically, in implementation, the raised ribs 151 can adopt a similar structure to the above-mentioned cross-shaped ribs 123, so that a number of raised ribs 151 form a net-shaped reinforcement structure, thereby achieving a better structural strengthening effect. And when necessary in this embodiment, based on the strength requirements of the front skeleton 10, a reinforcing rib and other structures for enhancing the connection strength can also be provided between the skeleton panel 15 and the front sections 11 of the rear floor longitudinal beams on both sides, and between the rear floor middle cross beam 12 and the front sections 11 of the rear floor longitudinal beams on both sides.

[0088] In addition, in this embodiment, as a preferred implementation form, as Figure 10 shown, the rear floor rear cross beam 40 is made of an extruded profile, and a plurality of cavities arranged in the left-right direction of the vehicle are separated inside the rear floor rear cross beam 40. The main advantage of such a setting is that it is convenient for the preparation of the rear floor rear cross beam 40, and combined with the setting of a plurality of cavities inside the rear floor rear cross beam 40, the structural strength of the rear floor rear cross beam 40 can also be ensured.

[0089] During specific setting, still referring to Figure 10As shown, transverse ribs 41 and longitudinal ribs 42 that cross each other are provided in the inner cavity of the rear floor rear cross beam 40, and based on the settings of the transverse ribs 41 and the longitudinal ribs 42, a plurality of cavities are separated within the rear floor rear cross beam 40.

[0090] And, referring to Figure 1 and Figure 8 As shown, in this embodiment, as a preferred implementation form, the rear sections 20 of the longitudinal floor beams on each side each include a plurality of steel sheet metals 21 that are snap-connected together. Each side connection member 30 is connected to at least a part of the steel sheet metals 21 on the same side, and the plurality of steel sheet metals 21 on each side and the connection member 30 together enclose a cavity 22 of the rear section of the longitudinal beam.

[0091] Here, making the rear section 20 of the longitudinal floor beam include steel sheet metal can facilitate the welding between the rear section 20 of the longitudinal floor beam and surrounding components, reduce the impact on the assembly welding line operation, and also ensure the structural strength of the rear section 20 of the longitudinal floor beam by forming the cavity 22 of the rear section of the longitudinal beam.

[0092] Moreover, between each side connection member 30 and the rear section 20 of the longitudinal floor beam on the same side, and between each side connection member 30 and the front skeleton 10, FDS (Flow drill screw) connection or SPR (Self-Piercing Rivet) connection can preferably be adopted to facilitate the connection between components of different materials.

[0093] Secondly, in this embodiment, as a preferred implementation form, the front skeleton 10 is integrally die-cast. The main advantage of such a setting is that the technology is mature and can ensure the forming effect of the front skeleton 10. At the same time, also as a preferred implementation form, the front skeleton 10 and the connection members 30 on both sides of this embodiment are made of aluminum alloy to facilitate their forming and contribute to weight reduction.

[0094] The rear floor skeleton of this embodiment can reduce the number of components of the rear floor skeleton, facilitate its preparation, and at the same time can utilize the characteristics of large die-casting structural strength to improve the structural strength of the rear floor skeleton, which is beneficial to enhancing the overall stiffness of the rear part of the vehicle body and further enhancing the vehicle's collision safety.

[0095] Embodiment Two

[0096] This embodiment relates to a vehicle, and the rear floor skeleton in Embodiment One is provided in this vehicle.

[0097] By setting the rear floor skeleton in Embodiment One, this embodiment of the vehicle is not only convenient for processing and preparation, ensures the forming accuracy, but also is beneficial to enhancing the structural stiffness of the rear part of the vehicle body, which helps to improve the overall safety quality of the vehicle, thereby making this vehicle have better product power.

[0098] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rear floor frame, characterized in that: It comprises a front frame (10), wherein the front frame (10) is formed with rear floor longitudinal beam front sections (11) arranged on the left and right sides, and a rear floor cross beam connected between the rear floor longitudinal beam front sections (11) on the two sides; It also includes a rear floor longitudinal beam rear section (20) respectively connected to the rear ends of the rear floor longitudinal beam front sections (11) on both sides, and the bottoms of the front ends of the rear floor longitudinal beam rear sections (20) on both sides are die-cast connecting parts (30), and the connecting parts (30) on each side are connected to the rear ends of the rear floor longitudinal beam front sections (11) on the same side.

2. The rear floor frame according to claim 1, characterized in that: A sub-frame front mounting point (112) and a shock-absorbing spring mounting point (113) are provided at the bottom of the front section (11) of the rear floor longitudinal beam, and a sub-frame rear mounting point (31) is provided on the connecting member (30).

3. The rear floor frame according to claim 2, characterized in that: The cross-sections of the front sections (11) of the rear floor longitudinal beams on both sides are both "E" shaped and open toward one side outside the vehicle along the left-right direction of the vehicle, and longitudinal beam reinforcing ribs (114) arranged along the up-down direction of the vehicle are respectively provided in the front sections (11) of the rear floor longitudinal beams; The longitudinal beam reinforcement ribs (114) in the front section (11) of each rear floor longitudinal beam are multiple and are arranged at intervals along the front and rear direction of the vehicle, and the longitudinal beam reinforcement ribs (114) are arranged above the front mounting point (112) of the subframe and the mounting point (113) of the shock absorbing spring.

4. The rear floor frame according to claim 2, characterized in that: The portion of the connecting member (30) is box-shaped, and a cavity is formed in the connecting member (30), the sub-frame rear mounting point (31) is located in the cavity, and a sub-frame mounting point reinforcement rib (33) is provided in the cavity; The auxiliary frame mounting point reinforcement ribs (33) are radially arranged with the auxiliary frame rear mounting point (31) as the center.

5. The rear floor frame according to claim 1, characterized in that: A safety belt mounting point (111) is provided on the front section (11) of the rear floor longitudinal beam on at least one side; and / or, The front frame (10) is formed with a rear wheel cover inner plate (14) respectively connected to the front section (11) of the rear floor longitudinal beam on both sides, and a rear shock absorber mounting point (141) is respectively provided on the rear wheel cover inner plate (14) on each side.

6. The rear floor frame according to claim 1, characterized in that: The rear floor cross beam comprises a rear floor middle cross beam (12) and a rear floor upper cross beam (13) connected between the front sections (11) of the rear floor longitudinal beams on both sides, and a rear floor rear cross beam (40) located between the connecting members (30) on both sides is connected between the rear sections (20) of the rear floor longitudinal beams on both sides.

7. The rear floor frame according to claim 6, characterized in that: The rear floor middle cross beam (12) is provided with a mounting boss (121) protruding forward along the front-rear direction of the entire vehicle, and the mounting boss (121) is provided with a seat mounting point (122); and / or, The front frame (10) is formed with a frame panel (15) connected to the front sections (11) of the rear floor longitudinal beams on both sides, and between the rear floor middle cross beam (12) and the rear floor upper cross beam (13), and the frame panel (15) is provided with a plurality of raised ribs (151).

8. The rear floor frame according to claim 6, characterized in that: The rear floor rear cross beam (40) is made of an extruded profile, and a plurality of cavities arranged along the left-right direction of the vehicle are divided inside the rear floor rear cross beam (40); and / or, The rear section (20) of the rear floor longitudinal beam on each side includes a plurality of steel sheet metals (21) that are buckled and connected together, the connecting piece (30) on each side is connected to at least a portion of the steel sheet metals (21) on the same side, and the plurality of steel sheet metals (21) on each side and the connecting piece (30) together form a longitudinal beam rear section cavity (22).

9. The rear floor frame according to any one of claims 1 to 8, characterized in that: The front frame (10) is integrally die-cast; and / or, The front frame (10) and the connecting parts (30) on both sides are made of aluminum alloy.

10. A vehicle, characterized in that: The vehicle is provided with the rear floor frame according to any one of claims 1 to 9.

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