Rear floor framework structure and vehicle

Abstract

The utility model provides a rear floor framework structure and a vehicle, the rear floor framework structure comprises an integrally formed structure body; rear floor longitudinal beam front sections arranged on the left side and the right side respectively, a first rear floor cross beam and a second rear floor cross beam connected between the rear floor longitudinal beam front sections on the two sides, and rear wheel cover inner plates connected to the rear floor longitudinal beam front sections on the two sides respectively are formed on the structure body. The first rear floor cross beam is located in front of the second rear floor cross beam when viewed from the up-down direction of the whole vehicle, and the second rear floor cross beam is located above the first rear floor cross beam when viewed from the front-back direction of the whole vehicle. Compared with the prior art, the rear floor framework structure has the advantages that the number of parts can be reduced, machining and manufacturing are convenient, meanwhile, the situation that the structural strength of the structure body is reduced due to the fact that connecting points exist can be avoided, the rear floor framework structure has good structural strength and collision performance, and therefore improvement of the quality of a whole vehicle can be facilitated.

Description

Technical Field

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

[0002] The rear floor assembly of a vehicle is an important part of the vehicle body. It has the important functions of carrying seats and passengers, and effectively dispersing and absorbing collision energy during a rear collision, reducing the deformation and collapse of the passenger compartment, and thus reducing passenger injuries. Therefore, the structural performance of the rear floor assembly plays an important role in the vehicle.

[0003] As the core part of the rear floor assembly of a vehicle, in the manufacturing process, the rear floor frame structure is generally a sheet metal welded beam structure formed by welding multiple sheet metal parts through spot welding technology. This not only makes it inconvenient for processing and manufacturing, but also causes problems with local structural connection defects in the overall rear floor due to the influence of the connection performance of the weld spots. Therefore, the traditional rear floor frame structure usually has problems such as many components, inconvenient processing and manufacturing, insufficient structural strength, and being prone to bending and serious damage during a collision, which is not conducive to improving the structural strength and safety quality of the whole vehicle. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a rear floor frame structure which is not only convenient for processing and manufacturing, but also has good structural strength.

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

[0006] A rear floor frame structure includes an integrally formed structural body;

[0007] The structural body is formed with front sections of rear floor longitudinal beams respectively arranged on the left and right sides, a first rear floor cross beam and a second rear floor cross beam connected between the front sections of the rear floor longitudinal beams on both sides, and inner panels of rear wheel housings respectively connected to the front sections of the rear floor longitudinal beams on both sides.

[0008] Viewed from the up and down direction of the whole vehicle, the first rear floor cross beam is located in front of the second rear floor cross beam, and viewed from the front and back direction of the whole vehicle, the second rear floor cross beam is located above the first rear floor cross beam.

[0009] Furthermore, 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 installation boss protruding forward in the front and back direction of the whole vehicle is provided on the first rear floor cross beam, and a seat mounting point is provided on the installation boss.

[0010] Further, subframe mounting points and shock absorber spring mounting points are respectively provided at the bottoms of the front sections of the rear floor side rails on both sides, and rear shock absorber mounting points are respectively provided on the inner panels of the rear wheel housings on both sides.

[0011] Further, the cross-sections of the front sections of the rear floor side rails on both sides are both "E"-shaped openings 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 side rails; the longitudinal beam reinforcing ribs in the front sections of the rear floor side rails 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 subframe mounting point and the shock absorber spring mounting point.

[0012] Further, on the outer side of each side of the inner panel of the rear wheel housing facing the outside of the vehicle, there are wheel housing outer reinforcing ribs arranged in the up-down direction of the whole vehicle. The wheel housing outer reinforcing ribs are multiple and arranged at intervals in the front-rear direction of the whole vehicle, and some of the wheel housing outer reinforcing ribs are connected to the positions of the rear shock absorber mounting points, and some of the wheel housing outer reinforcing ribs are arranged vertically corresponding to the longitudinal beam reinforcing ribs on the same side; on the inner side of each side of the inner panel of the rear wheel housing facing the inside of the vehicle, there are wheel housing inner reinforcing ribs arranged in the up-down direction of the whole vehicle. The wheel housing inner reinforcing ribs are multiple and arranged at intervals in the front-rear direction of the whole vehicle, and the bottoms of the wheel housing inner reinforcing ribs are connected to the front sections of the rear floor side rails, and some of the wheel housing inner reinforcing ribs are connected to the positions of the rear shock absorber mounting points.

[0013] Further, on the outer side of each side of the inner panel of the rear wheel housing facing the outside of the vehicle, there are diagonal force transmission ribs connected to the positions of the rear shock absorber mounting points, and the diagonal force transmission ribs are connected to the wheel housing outer reinforcing ribs; and / or, at the front end inside the front section of the rear floor side rail on each side, there are diagonal reinforcing ribs, and the diagonal reinforcing ribs form multiple triangular frame structures inside the front section of the rear floor side rail.

[0014] Further, several longitudinal beam lower force transmission ribs extending in the front-rear direction of the whole vehicle are provided at the bottoms of the front sections of the rear floor side rails on each side. The rear ends of the longitudinal beam lower force transmission ribs are connected to the positions of the shock absorber spring mounting points, and the front ends of the longitudinal beam lower force transmission ribs extend to the connection points between the front sections of the rear floor side rails and the first rear floor cross beam; each front section of the rear floor side rail has a corner position arched upwards in the up-down direction of the whole vehicle. The second rear floor cross beam is located between the corner positions on both sides, and cross ribs cross-connected to the longitudinal beam lower force transmission ribs are provided at the bottoms of the corner positions.

[0015] Furthermore, a crossbeam cavity is formed at the bottom of at least one of the first rear floor crossbeam and the second rear floor crossbeam. A crossbeam reinforcing rib is arranged in the crossbeam cavity, and the crossbeam reinforcing rib includes at least one of a cross-shaped rib and a wavy reinforcing rib extending in the left-right direction of the vehicle; and / or, a skeleton panel is formed on the structural body and is connected between the front sections of the rear floor longitudinal beams on both sides, as well as the first rear floor crossbeam and the second rear floor crossbeam. A plurality of raised ribs are arranged on the skeleton panel.

[0016] Furthermore, the structural body is integrally die-cast, and / or the structural body is made of aluminum alloy.

[0017] Compared with the prior art, the present utility model has the following advantages:

[0018] For the rear floor skeleton structure of the present utility model, by integrally die-casting the structural body, it can reduce the use of parts, eliminate the need for connection between components, facilitate processing and manufacturing. At the same time, the structural body can have high processing accuracy, and prevent the reduction of the structural strength of the structural body due to the existence of connection points. Moreover, combined with the staggered arrangement of the first rear floor crossbeam and the second rear floor crossbeam, it is beneficial to effectively improve the structural strength of the structural body, thereby enabling the rear floor skeleton structure to have good structural strength and collision performance, and thus facilitating the improvement of the overall safety quality of the vehicle.

[0019] In addition, a seat belt mounting point is arranged on the front section of the rear floor longitudinal beam, a seat mounting point is arranged on the mounting boss of the first rear floor crossbeam, a subframe mounting point and a shock absorber spring mounting point are respectively arranged at the bottoms of the front sections of the rear floor longitudinal beams on both sides, and rear shock absorber mounting points are respectively arranged on the inner plates of the rear wheel housings on both sides. On the premise of integrally die-casting the structural body, compared with the traditional technology, it can prevent the reduction of the structural strength at the positions of each mounting point due to the use of too many connection points, thereby improving the mounting reliability of each mounting point.

[0020] Moreover, the cross-sections of the front sections of the rear floor longitudinal beams on both sides are both "E"-shaped, and combined with the longitudinal beam reinforcing ribs arranged in the up-down direction of the vehicle, each front section of the rear floor longitudinal beam can have good anti-bending performance, which is beneficial to the improvement of the overall strength of the rear floor skeleton structure. At the same time, the longitudinal beam reinforcing ribs are multiple and arranged at intervals in the front-rear direction of the vehicle, and longitudinal beam reinforcing ribs are arranged above both the subframe mounting point and the shock absorber spring mounting point, which can use the longitudinal beam reinforcing ribs to enhance the structural strength at the positions of each mounting point.

[0021] Secondly, by cooperating with the setting of the outer wheelhouse reinforcing rib and the inner wheelhouse reinforcing rib, the structural strength of the inner panel of the rear wheelhouse can be enhanced. At the same time, part of the outer wheelhouse reinforcing rib is connected to the position of the rear shock absorber mounting point, part of the inner wheelhouse reinforcing rib is connected to the position of the rear shock absorber mounting point, and part of the outer wheelhouse reinforcing rib is arranged corresponding to the upper and lower parts of the same-side longitudinal beam reinforcing rib. The bottom of each inner wheelhouse reinforcing rib is connected to the front section of the rear floor longitudinal beam, which is beneficial to the structural strength of the rear shock absorber mounting point position and the improvement of the connection strength between the inner panel of the rear wheelhouse and the same-side longitudinal beam reinforcing rib. The setting of the diagonal force transmission rib is beneficial to further improving the structural strength of the inner panel of the rear wheelhouse and the position of the rear shock absorber mounting point. The diagonal reinforcing rib forms a plurality of triangular frame structures inside the front section of the rear floor longitudinal beam, and the high stability of the triangular structure can be utilized to improve the structural strength.

[0022] In addition, a lower longitudinal beam force transmission rib is set, and the rear end of the lower longitudinal beam force transmission rib is connected to the position of the shock absorber spring mounting point. The front end of the lower longitudinal beam force transmission rib extends to the connection point between the front section of the rear floor longitudinal beam and the first rear floor cross beam, which is beneficial to improving the force transmission performance of the front section of the rear floor longitudinal beam and the structural strength of the shock absorber spring mounting point position. At the same time, the setting of the cross rib can further improve the structural strength of the corner position on the basis of the lower longitudinal beam force transmission rib.

[0023] Meanwhile, a cross beam reinforcing rib is arranged in the beam cavity of the first rear floor cross beam and the second rear floor cross beam, and the cross beam reinforcing rib includes at least one of a cross-shaped cross rib and a wavy reinforcing rib extending in the left-right direction of the vehicle, which can make each floor cross beam have better structural strength. A number of raised ribs are arranged on the skeleton panel, which is beneficial to enhancing the structural strength and load-bearing performance of the skeleton panel. The structural body is integrally die-cast, and the structural body is made of aluminum alloy, which can effectively reduce the weight of the rear floor skeleton structure, thus facilitating the lightweight design of the whole vehicle.

[0024] Another object of the present invention is to provide a vehicle, in which the above-mentioned rear floor skeleton structure is provided in the body of the vehicle.

[0025] The vehicle of the present invention is provided with the above-mentioned rear floor skeleton structure, which is not only beneficial to processing and manufacturing, but also beneficial to improving the structural strength and collision performance of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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:

[0027] Figure 1 is a schematic structural diagram when the rear floor skeleton structure described in the embodiment of the present invention is assembled with the vehicle body;

[0028] Figure 2 Schematic structural diagram of the rear floor skeleton structure according to an embodiment of the present utility model;

[0029] Figure 3 、 Figure 4 and Figure 7 are Figure 2 schematic structural diagrams of the structure shown in from other perspectives;

[0030] Figure 5 is Figure 4 a cross-sectional view taken along the A-A direction in ;

[0031] Figure 6 is Figure 5 an enlarged view of part B in ;

[0032] Explanation of reference numerals:

[0033] 10, Structural body;

[0034] 11, Front section of rear floor longitudinal beam; 11a, Bottom wall of front section; 11b, Top wall of front section; 11c, Side wall of front section; 11d, Intermediate wall; 111, Seat belt mounting point; 112, Subframe mounting point; 113, Shock absorber spring mounting point; 114, Longitudinal beam reinforcing rib; 115, Diagonal reinforcing rib; 116, Lower longitudinal beam force transfer rib; 117, Cross rib;

[0035] 12, First rear floor cross beam; 121, Mounting boss; 122, Seat mounting point; 123, Cross-shaped cross rib;

[0036] 13, Second rear floor cross beam; 131, Wavy reinforcing rib;

[0037] 14, Inner panel of rear wheel housing; 141, Rear shock absorber mounting point; 142, Outer wheel housing reinforcing rib; 143, Inner wheel housing reinforcing rib; 144, Diagonal force transfer rib;

[0038] 15, Skeleton panel; 151, Raised rib;

[0039] 20, Outer panel of rear wheel housing; 30, Front panel; 40, Rear panel; 50, Front cross beam of rear floor; 60, Rear cross beam of rear floor. Detailed implementation manners

[0040] 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.

[0041] 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. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not 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.

[0042] Taking the vehicle where the rear floor skeleton structure described in the present utility model is located as an example, the orientation terms such as "upper, lower, left, right, front, rear" used in the embodiments are defined based on the up and down direction (also known as the height direction, or the vehicle's Z direction), left and right direction (also known as the width direction, or the vehicle's Y direction), and front and rear direction (also known as the length direction, or the vehicle's X direction) of the vehicle. "Inner" and "outer" are defined based on the contour of the corresponding component. For example, "inner" and "outer" defined based on the vehicle contour, with the side closer to the middle of the vehicle being "inner" and the opposite being "outer".

[0043] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", "connection component" 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.

[0044] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0045] Embodiment 1

[0046] This embodiment relates to a rear floor skeleton structure, which can not only reduce the use of components and is convenient for processing and manufacturing, but also has good structural performance.

[0047] In terms of the overall structure, as Figures 1 to 7 shown, the rear floor skeleton structure of this embodiment includes an integrally formed structure body 10. And, on the structure body 10, there are formed front sections 11 of rear floor longitudinal beams provided on the left and right sides respectively, a first rear floor cross beam 12 and a second rear floor cross beam 13 connected between the front sections 11 of the rear floor longitudinal beams on both sides, and inner wheelhouse panels 14 respectively connected to the front sections 11 of the rear floor longitudinal beams on both sides. From the up and down direction of the whole vehicle, the first rear floor cross beam 12 is in front of the second rear floor cross beam 13, and from the front and rear direction of the whole vehicle, the second rear floor cross beam 13 is above the first rear floor cross beam 12.

[0048] At this time, with the above settings, it can be integrally die-cast by the structural body 10, reducing the use of components and eliminating the need for connection between components, which is convenient for processing and manufacturing. Moreover, it can also enable the structural body 10 to have high machining accuracy and prevent the structural strength of the structural body 10 from being reduced due to the existence of connection points. At the same time, combined with the staggered arrangement of the first rear floor cross beam 12 and the second rear floor cross beam 13, it is beneficial to effectively improve the structural strength of the structural body 10, so that the rear floor skeleton structure has good structural strength and collision performance.

[0049] Based on the above overall introduction, specifically, the rear floor skeleton structure of this embodiment is an important part of the vehicle body rear floor assembly. In specific implementation, the first rear floor cross beam 12 is generally the middle cross beam of the rear floor, and the second rear floor cross beam 13 is generally the upper cross beam of the rear floor.

[0050] And, as Figure 1 shown, in the vehicle body rear floor assembly, a front panel 30 and a front rear floor cross beam 50 are provided on the front side of the structural body 10 of this embodiment, a rear panel 40 and a rear rear floor cross beam 60 are provided on the rear side of the structural body 10, and a rear wheel housing outer panel 20 and other structures are also provided on the side facing the outside of the vehicle of the left and right rear wheel housing inner panels 14 in the structural body 10. Other related structures not mentioned can refer to the well-known vehicle body structures of those skilled in the art and will not be elaborated here.

[0051] In this embodiment, as a preferred implementation form, referring to Figure 1 shown, a seat belt mounting point 111 is provided on at least one front section 11 of the rear floor longitudinal beam, and at the same time, as a preferred implementation form, an installation boss 121 protruding forward in the vehicle's front-rear direction is provided on the first rear floor cross beam 12, and a seat mounting point 122 is provided on the installation boss 121.

[0052] In specific implementation, a seat belt mounting point 111 is preferably provided on each front section 11 of the above-mentioned rear floor longitudinal beam to facilitate the layout and installation of the seat belt. Secondly, the installation bosses 121 of this embodiment can be two arranged at intervals in the vehicle's left-right direction, and a seat mounting point 122 is provided on each installation boss 121, which can improve the seat mounting stability.

[0053] Of course, in addition to being set to two, the seat mounting points 122 of this embodiment can also be set and adjusted according to the actual seat installation requirements. For example, they can be three arranged at intervals in the vehicle's left-right direction. Furthermore, when necessary, a reinforcing rib structure connected to the position of the seat mounting point 122 can be provided on the installation boss 121 to further improve the structural strength of the position of the seat mounting point 122.

[0054] Meanwhile, in this embodiment, as a preferred implementation form, refer to Figure 3 As shown, subframe mounting points 112 and shock absorber spring mounting points 113 are respectively provided at the bottoms of the front sections 11 of the rear floor longitudinal beams on both sides, and rear shock absorber mounting points 141 are respectively provided on the inner panels 14 of the rear wheel housings on both sides.

[0055] It can be understood that seat belt mounting points 111 are provided on the front sections 11 of the rear floor longitudinal beams, seat mounting points 122 are provided on the mounting bosses 121 of the first rear floor cross beam 12, subframe mounting points 112 and shock absorber spring mounting points 113 are respectively provided at the bottoms of the front sections 11 of the rear floor longitudinal beams on both sides, and rear shock absorber mounting points 141 are respectively provided on the inner panels 14 of the rear wheel housings on both sides. On the premise that the structural body 10 is integrally die-cast, compared with the traditional technology, it can prevent the reduction of the structural strength at the positions of each mounting point caused by using too many connection points, thereby improving the mounting reliability of each mounting point.

[0056] In the specific structure of this embodiment, the number and arrangement form of the rear shock absorber mounting points 141 can be set and adjusted according to the actual mounting requirements of the rear shock absorber. For example, they can specifically be Figure 3 the two arranged at intervals in the front-rear direction of the whole vehicle as shown in. Moreover, the specific structures of the seat belt mounting points 111, seat mounting points 122, subframe mounting points 112, shock absorber spring mounting points 113, rear shock absorber mounting points 141 and other mounting points in this embodiment can all refer to the relevant structures in the body structure well-known to those skilled in the art.

[0057] In addition, 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 all "E"-shaped openings 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 front section 11 of the rear floor longitudinal beam. At the same time, the longitudinal beam reinforcing ribs 114 in each front section 11 of the rear floor longitudinal beam are multiple arranged at intervals in the front-rear direction of the whole vehicle, and longitudinal beam reinforcing ribs 114 are provided above both the subframe mounting point 112 and the shock absorber spring mounting point 113.

[0058] With such a setting, through the cross-sections of the front sections 11 of the rear floor longitudinal beams on both sides being "E"-shaped, and in combination with the longitudinal beam reinforcing ribs 114 arranged in the up-down direction of the whole vehicle, each front section 11 of the rear floor longitudinal beam has good bending resistance, which is beneficial to improving the overall strength of the rear floor skeleton structure. By arranging the longitudinal beam reinforcing ribs 114 as multiple arranged at intervals in the front-rear direction of the whole vehicle, and longitudinal beam reinforcing ribs 114 being provided above both the subframe mounting point 112 and the shock absorber spring mounting point 113, the longitudinal beam reinforcing ribs 114 can be used to enhance the structural strength at the positions of each mounting point.

[0059] It is worth mentioning that the cross-section of the front section 11 of the rear floor longitudinal beam is in an "E" shape. It is not exactly like the letter "E" in the strict sense, but rather means that its cross-section visually resembles an "E" shape and has a shape trend that matches the surrounding structures such as the inner panel 14 of the rear wheelhouse and the second rear floor cross beam 13, etc.

[0060] Still as Figure 4 and Figure 6 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 arranged at intervals in the vehicle's up and down direction, as well as front side walls 11c connecting the front bottom wall 11a, the front top wall 11b, and the intermediate wall 11d. At this time, the tops of multiple longitudinal beam reinforcing ribs 114 are connected to the front top wall 11b, the bottoms of the multiple longitudinal beam reinforcing ribs 114 are connected to the front bottom wall 11a, the inner sides of the multiple longitudinal beam reinforcing ribs 114 are connected to the front side walls 11c, and at the same time, the multiple longitudinal beam reinforcing ribs 114 all cross the intermediate wall 11d to form a cross-shaped reinforcing rib. Moreover, the combined setting of the multiple longitudinal beam reinforcing ribs 114, the front bottom wall 11a, the front top wall 11b, the front side walls 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] Secondly, in this embodiment, as a preferred implementation form, referring to Figure 3 and Figure 4 shown, on the side of each side's rear wheelhouse inner panel 14 facing the outside of the vehicle, there are wheelhouse outer reinforcing ribs 142 arranged in the vehicle's up and down direction. The wheelhouse outer reinforcing ribs 142 are multiple and arranged at intervals in the vehicle's front and rear direction, 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 ribs 114 on the same side.

[0062] At this time, referring to Figure 2 and Figure 5 shown, on the side of each side's rear wheelhouse inner panel 14 facing the inside of the vehicle, there are wheelhouse inner reinforcing ribs 143 arranged in the vehicle's up and down direction. The wheelhouse inner reinforcing ribs 143 are multiple and arranged at intervals in the vehicle's front and rear direction, and the bottoms of each of the wheelhouse inner reinforcing ribs 143 are connected to the front section 11 of the rear floor longitudinal beam, and some of the wheelhouse inner reinforcing ribs 143 are connected to the position of the rear shock absorber mounting point 141.

[0063] By cooperatively arranging the outer wheelhouse reinforcing rib 142 and the inner wheelhouse reinforcing rib 143, the structural strength of the rear wheelhouse inner panel 14 can be enhanced. At the same time, part of the outer wheelhouse reinforcing rib 142 is connected to the position of the rear shock absorber mounting point 141, part of the inner wheelhouse reinforcing rib 143 is connected to the position of the rear shock absorber mounting point 141, part of the outer wheelhouse reinforcing rib 142 is arranged corresponding to the longitudinal beam reinforcing rib 114 on the same side up and down, and the bottom of each inner wheelhouse reinforcing rib 143 is connected to the front section 11 of the rear floor longitudinal beam, which can also facilitate the structural strength at 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.

[0064] In this embodiment, during specific implementation, as a preferred implementation form, an inclined force transmission rib 144 connected to the position of the rear shock absorber mounting point 141 is provided on the side of each rear wheelhouse inner panel 14 facing away from the vehicle. The inclined force transmission rib 144 is connected to the outer wheelhouse reinforcing rib 142, thereby facilitating further improvement of the structural strength of the rear wheelhouse inner panel 14 and the position of the rear shock absorber mounting point 141.

[0065] Also as a preferred implementation form, in this embodiment, continue to refer to Figure 4 As shown, at the front end inside the front section 11 of each side's rear floor longitudinal beam, an inclined reinforcing rib 115 is provided, 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.

[0066] 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 each of the two shock absorber mounting points, and the adjacent two inclined force transmission ribs 144 are connected, etc.

[0067] In addition, in combination with Figure 3 and Figure 7 As shown, in this embodiment, as a preferred implementation form, a plurality of longitudinal beam lower force transmission ribs 116 extending in the front-rear direction of the vehicle are provided at the bottom of the front section 11 of each side's rear floor longitudinal beam. 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 first rear floor cross beam 12.

[0068] Moreover, each side's rear floor longitudinal beam front section 11 has a corner position that arches upward in the up-down direction of the vehicle. The second rear floor cross beam 13 is located between the two corner positions, and a cross rib 117 that cross-connects with the longitudinal beam lower force transmission rib 116 is provided at the bottom of the corner position.

[0069] The main advantages of such a setting are as follows. It is beneficial to improving 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-absorbing spring mounting point 113. At the same time, the setting of the cross ribs 117 can further enhance the structural strength of the corner position on the basis of the force transmission ribs 116 at the lower part of the longitudinal beam, thereby ensuring the structural performance of the front section 11 of the rear floor longitudinal beam.

[0070] During specific implementation, the quantity and layout form of the force transmission ribs 116 at the lower part of the longitudinal beam in this embodiment can also be correspondingly set and adjusted 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 in the left-right direction of the whole vehicle, etc.

[0071] In addition, as a preferred implementation form, in combination with Figure 2 、 Figure 3 and Figure 7 as shown, in this embodiment, at least one of the bottoms of the first rear floor cross beam 12 and the second rear floor cross beam 13 forms a cross beam cavity. A cross beam reinforcing rib is provided in the cross beam cavity, and the cross 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 whole vehicle. In this way, the structural strength of each floor cross beam can be made better.

[0072] Of course, during 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 whole vehicle are provided in the cross beam cavity of the first rear floor cross beam 12, and wavy reinforcing ribs 131 are provided in the cross beam cavity of the second rear floor cross beam 13, etc.

[0073] Also as a preferred implementation form, a skeleton panel 15 is formed on the structural body 10 of this embodiment, which is connected between the front sections 11 of the rear floor longitudinal beams on both sides, the first rear floor cross beam 12, and the second rear floor cross beam 13, and a number of raised ribs 151 are provided on the skeleton panel 15. By providing a number of raised ribs 151, the skeleton panel 15 can have good structural strength and load-bearing performance.

[0074] The raised ribs 151 here, during specific implementation, can adopt a similar structure to the above-mentioned cross-shaped ribs 123, so that a number of raised ribs 151 form a mesh-like strengthening structure, thereby achieving a better structural strengthening effect. And when necessary in this embodiment, based on the strength requirements of the structural body 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 first rear floor cross beam 12 and the front sections 11 of the rear floor longitudinal beams on both sides.

[0075] Meanwhile, in this embodiment, as a preferred implementation form, the structural body 10 is integrally die-cast, and preferably, the structural body 10 is made of aluminum alloy. In this way, based on the integral die-casting of the structural body 10 and the use of aluminum alloy for the structural body 10, the weight of the rear floor skeleton structure can be effectively reduced, thus facilitating the lightweight design of the whole vehicle.

[0076] The rear floor skeleton structure of this embodiment can reduce the use of parts, without the need for connection between components, which is convenient for processing and manufacturing. It can also make the structural body 10 have a high processing accuracy and prevent the structural strength of the structural body 10 from being reduced due to the existence of connection points. At the same time, it can also effectively improve the structural strength of the structural body 10, so that the rear floor skeleton structure has good structural strength and collision performance, which is beneficial to the improvement of the safety quality of the whole vehicle.

[0077] Embodiment Two

[0078] This embodiment relates to a vehicle, in which the rear floor skeleton structure in Embodiment One is provided in the vehicle body.

[0079] For the vehicle of this embodiment, by setting the rear floor skeleton structure in Embodiment One, the number of parts used can be reduced, which is convenient for processing and manufacturing. At the same time, it can also make the whole vehicle have good structural strength and collision performance, thus being beneficial to improving the quality and market competitiveness of the whole vehicle.

[0080] 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 in the protection scope of the present utility model.

Claims

1. A rear floor frame structure, characterized in that: It comprises an integrally formed structural body (10); The structural body (10) is formed with rear floor longitudinal beam front sections (11) arranged on the left and right sides, a first rear floor cross beam (12) and a second rear floor cross beam (13) connected between the rear floor longitudinal beam front sections (11) on both sides, and rear wheel housing inner panels (14) respectively connected to the rear floor longitudinal beam front sections (11) on both sides; When viewed from the up-down direction of the vehicle, the first rear floor cross beam (12) is located in front of the second rear floor cross beam (13), and when viewed from the front-back direction of the vehicle, the second rear floor cross beam (13) is located above the first rear floor cross beam (12).

2. The rear floor frame structure 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 first rear floor cross beam (12) is provided with a mounting boss (121) protruding forward along the front-rear direction of the entire vehicle, and a seat mounting point (122) is provided on the mounting boss (121).

3. The rear floor frame structure according to claim 1, characterized in that: A subframe mounting point (112) and a shock-absorbing spring mounting point (113) are respectively provided at the bottom of the front section (11) of the rear floor longitudinal beam on both sides, and a rear shock-absorbing device mounting point (141) is respectively provided on the inner plate (14) of the rear wheel housing on both sides.

4. The rear floor frame structure according to claim 3, 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-rear direction of the vehicle, and the longitudinal beam reinforcement ribs (114) are arranged above the subframe mounting point (112) and the shock absorber spring mounting point (113).

5. The rear floor frame structure according to claim 4, characterized in that: The side of the rear wheel housing inner plate (14) on each side facing outward from the vehicle is provided with a wheel housing outer reinforcement rib (142) arranged along the vertical direction of the entire vehicle, the wheel housing outer reinforcement rib (142) is a plurality of ribs arranged at intervals along the front-rear direction of the entire vehicle, and some of the wheel housing outer reinforcement ribs (142) are connected to the rear shock absorber mounting point (141), and some of the wheel housing outer reinforcement ribs (142) are arranged vertically corresponding to the longitudinal beam reinforcement rib (114) on the same side; The side of the rear wheel arch inner plate (14) on each side facing the interior of the vehicle is provided with a wheel arch inner reinforcement rib (143) arranged along the up-down direction of the entire vehicle, and the wheel arch inner reinforcement rib (143) is a plurality of ribs arranged at intervals along the front-rear direction of the entire vehicle, and the bottom of each wheel arch inner reinforcement rib (143) is connected to the front section of the rear floor longitudinal beam (11), and some of the wheel arch inner reinforcement ribs (143) are connected to the rear shock absorber mounting point (141).

6. The rear floor frame structure according to claim 5, characterized in that: An oblique force transmission rib (144) connected to the rear shock absorber mounting point (141) is provided on the side of the rear wheel housing inner plate (14) facing outward from the vehicle, and the oblique force transmission rib (144) is connected to the wheel housing outer reinforcing rib (142); and / or, The front end of the rear floor longitudinal beam front section (11) on each side is provided with an oblique reinforcing rib (115), and the oblique reinforcing rib (115) forms a plurality of triangular frame structures inside the rear floor longitudinal beam front section (11).

7. The rear floor frame structure according to claim 3, characterized in that: A plurality of longitudinal beam lower force transmission ribs (116) extending along the front-rear direction of the vehicle are provided at the bottom of the rear floor longitudinal beam front section (11) on each side, the rear ends of the longitudinal beam lower force transmission ribs (116) are connected to the shock absorbing spring mounting point (113), and the front ends of the longitudinal beam lower force transmission ribs (116) extend to the connection point between the rear floor longitudinal beam front section (11) and the first rear floor cross beam (12); The front section (11) of the rear floor longitudinal beam on each side has a corner position that is arched upward in the vertical direction of the whole vehicle, the second rear floor cross beam (13) is located between the corner positions on both sides, and a cross rib (117) cross-connected with the force transmission rib (116) at the bottom of the longitudinal beam is provided.

8. The rear floor frame structure according to claim 1, characterized in that: A crossbeam cavity is formed at the bottom of at least one of the first rear floor crossbeam (12) and the second rear floor crossbeam (13), and crossbeam reinforcement ribs are arranged in the crossbeam cavity, and the crossbeam reinforcement ribs include at least one of cross ribs (123) and wave-shaped reinforcement ribs (131) extending in the left-right direction of the vehicle; and / or, The structural body (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 first rear floor cross beam (12) and the second rear floor cross beam (13), and the frame panel (15) is provided with a plurality of raised ribs (151).

9. The rear floor frame structure according to any one of claims 1 to 8, characterized in that: The structural body (10) is integrally die-cast, and / or the structural body (10) is made of aluminum alloy.

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

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