Rear floor structure and vehicle

Abstract

The utility model provides a rear floor structure and a vehicle. The rear floor structure comprises a floor upper cross beam, a spare tire supporting cross beam and a spare tire supporting longitudinal beam. The floor upper cross beam and the spare tire supporting cross beam are arranged on a vehicle body longitudinal beam in a spaced mode in the first direction. The first end of the spare tire supporting longitudinal beam is connected with the floor upper cross beam, and the second end of the rear floor structure is connected with the spare tire supporting cross beam; the spare tire supporting longitudinal beam is used for installing a spare tire. According to the utility model, the floor upper cross beam, the spare tire supporting cross beam and the spare tire supporting longitudinal beam are matched to form the I-shaped bracket for mounting the spare tire, so that the mounting requirement of the spare tire can be met on the rear floor structure even under the condition that the rear space of a vehicle body is not enough. Compared with a spare tire pool structure of a traditional rear floor structure, the spare tire pool structure is large in design freedom degree, few in arrangement limiting factors, capable of improving the platform utilization rate of peripheral parts, capable of meeting the installation and use requirements of a spare tire and firmer in installation of the spare tire.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rear floor structure technical field especially relates to a rear floor structure and vehicle. BACKGROUND

[0002] In the development and design of a vehicle, a pit-shaped spare tire pool is designed on the floor under the luggage compartment cover plate, and a support is designed in the center of the spare tire pool, which is connected with the spare tire pool through welding points. Because the size of the spare tire part is large, the size of the required spare tire pit is large, which makes it difficult to determine the position of the spare tire in the arrangement stage. If the spare tire is arranged in front, the spare tire and the spare tire pool often have insufficient clearance or interference with the rear subframe, the body cross beam and other parts. If the spare tire is arranged at the rear, the spare tire and the spare tire pool often interfere with or have insufficient clearance with the tail door sill trim plate, the rear anti-collision beam and other parts. In the case of insufficient space at the rear of the vehicle body, due to the limitation of factors such as the short size of the rear suspension of the vehicle and the modeling of the rear of the vehicle, the rear floor structure cannot meet the installation requirements of the spare tire. SUMMARY

[0003] The utility model provides a kind of rear floor structure and vehicle, to solve the problem that existing rear floor structure, in the case of insufficient space at the rear of the vehicle body, cannot meet the installation requirements of the spare tire.

[0004] A rear floor structure comprises an upper floor beam, a spare tire support cross beam and a spare tire support longitudinal beam.

[0005] The upper floor beam and the spare tire support cross beam are arranged on the vehicle body longitudinal beam in a first direction.

[0006] The first end of the spare tire support longitudinal beam is connected to the upper floor beam, and the second end of the spare tire support longitudinal beam is connected to the spare tire support cross beam.

[0007] The spare tire support longitudinal beam is used to install the spare tire.

[0008] Preferably, the rear floor structure further comprises a floor body.

[0009] The floor body is arranged on the vehicle body longitudinal beam, and the upper floor beam and the spare tire support cross beam are arranged on the floor body.

[0010] At least part of the projection of the upper floor beam in the up-down direction of the vehicle overlaps the floor body.

[0011] The floor body is provided with a storage space corresponding to the spare tire.

[0012] Preferably, the rear floor structure further comprises an adapter; one adapter is installed at each end of the spare tire support cross beam, and the adapter is used to install on the longitudinal beam.

[0013] Preferably, the floor cross beam comprises a first body, two second bodies extending out from two sides of the first body in the same direction, and a third body extending out from one side of the two second bodies away from the first body in the opposite direction;

[0014] The first body is connected to the first end of the spare tire support longitudinal beam;

[0015] The third body is used for being connected to the longitudinal beam.

[0016] Preferably, the spare tire support cross beam comprises a cross beam body and a crash energy absorption cavity arranged in the cross beam body;

[0017] The second end of the spare tire support longitudinal beam is connected to the cross beam body.

[0018] Preferably, the spare tire support longitudinal beam comprises a longitudinal beam body and two connecting parts extending out from two ends of the longitudinal beam body, respectively;

[0019] The longitudinal beam body is used for mounting a spare tire;

[0020] The two connecting parts are connected to the floor cross beam and the spare tire support cross beam, respectively.

[0021] Preferably, the longitudinal beam body comprises a fourth body, two fifth bodies extending out from two sides of the fourth body in the same direction, and a sixth body extending out from one side of the two fifth bodies away from the fourth body in the opposite direction;

[0022] The fourth body is used for mounting a spare tire;

[0023] The sixth body is provided with a recess.

[0024] Preferably, the adapter comprises a body part, a first lap joint part extending out from a first side edge of the body part, and two second lap joint parts extending out from a second side edge and a third side edge of the body part in the opposite direction; the first lap joint part and the second lap joint part are perpendicular to each other;

[0025] The body part is used for being connected to the spare tire support cross beam;

[0026] The first lap joint part and the two second lap joint parts are used for being connected to three side surfaces of the longitudinal beam, respectively.

[0027] Preferably, the rear floor structure further comprises a first fastener and a second fastener; the floor cross beam and the spare tire support cross beam are both provided with a first fastening hole, both ends of the spare tire support longitudinal beam are provided with a second fastening hole, the middle part of the spare tire support longitudinal beam is provided with a third fastening hole, and the spare tire is provided with a fourth fastening hole;

[0028] The first fastener is threaded through the first fastening hole and the second fastening hole to mount the spare tire support stringer on the floor cross beam and / or the spare tire support cross beam;

[0029] The second fastener is threaded through the third fastening hole and the fourth fastening hole to mount the spare tire on the spare tire support stringer.

[0030] A vehicle comprising a vehicle body stringer, a spare tire and the rear floor structure;

[0031] The two vehicle body stringers are arranged along a second direction.

[0032] The two ends of the floor cross beam are connected to the two vehicle body stringers respectively.

[0033] The two ends of the spare tire support cross beam are connected to the two vehicle body stringers respectively.

[0034] The spare tire is mounted on the spare tire support stringer of the rear floor structure.

[0035] The rear floor structure provided by the embodiment of the present application is used for placing a spare tire, and specifically comprises a floor cross beam, a spare tire support cross beam and a spare tire support stringer; during installation, the floor cross beam and the spare tire support cross beam are arranged along a first direction on a vehicle body stringer, a first end of the spare tire support stringer is connected to the floor cross beam, a second end of the spare tire support stringer is connected to the spare tire support cross beam, and the spare tire support stringer is used for mounting a spare tire; in this way, the floor cross beam, the spare tire support cross beam and the spare tire support stringer of the rear floor structure cooperatively form a H-shaped support, which is used for mounting a spare tire; even in the case that the space at the rear of the vehicle body is insufficient, the installation requirements of the spare tire can still be met on the rear floor structure. The H-shaped support structure of the rear floor structure in the example is simple, and the manufacturing process is simple; compared with the spare tire pool structure of a traditional rear floor structure, the design has a large degree of freedom, and the arrangement is less limited by factors, so that the platform along rate of peripheral parts can be improved; the H-shaped support structure has good modal and stiffness strength performance, and can meet the installation and use requirements of the spare tire; the installation of the spare tire is more reliable, and the problem of loosening and vibration of the vehicle under harsh working conditions such as bumpy road driving, sudden acceleration, sudden braking and sudden turning can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0037] Figure 1is an exploded view of the rear floor structure in one embodiment of the utility model;

[0038] Figure 2 is an axial side view of the rear floor structure in one embodiment of the utility model;

[0039] Figure 3 is a partial structure view of the rear floor structure in one embodiment of the utility model;

[0040] Figure 4 is an axial side view of the adapter in one embodiment of the utility model;

[0041] Figure 5 is a sectional view of the floor upper cross beam in one embodiment of the utility model;

[0042] Figure 6 is a sectional view of the spare tire support cross beam in one embodiment of the utility model;

[0043] Figure 7 is a sectional view of the rear floor structure in one embodiment of the utility model.

[0044] Wherein, 1, floor upper cross beam;101, first main body;102, second main body;103, third main body;2, spare tire support cross beam;21, cross beam body;22, collision energy absorption cavity;3, spare tire support longitudinal beam;31, longitudinal beam body;311, fourth main body;312, fifth main body;313, sixth main body;314, recess;32, connecting portion;4, spare tire;5, adapter;51, main body portion;52, first lap joint portion;53, second lap joint portion;6, vehicle body longitudinal beam;7, first fastener;8, second fastener;9, first fastening hole;10, second fastening hole;11, third fastening hole;12, fourth fastening hole;13, floor body;14, storage space. DETAILED DESCRIPTION

[0045] In order to make the technical problem, technical scheme and beneficial effect solved by the utility model more clearly, the following will be further described in detail by combining with the drawings and embodiments.The specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0046] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two.

[0047] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, and can also be detachably connected, or integrally connected, can be mechanically connected, or electrically connected, can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0048] The utility model embodiment provides a kind of rear floor structure, refer to Figure 1 、 Figure 2 And Figure 3 The rear floor structure includes floor upper crossbeam 1, spare tire support crossbeam 2 and spare tire support longitudinal beam 3;Floor upper crossbeam 1 and spare tire support crossbeam 2 are spaced apart on the vehicle body longitudinal beam 6 along the first direction;The first end of spare tire support longitudinal beam 3 is connected with floor upper crossbeam 1, and the second end of spare tire support longitudinal beam 3 is connected with spare tire support crossbeam 2;Spare tire support longitudinal beam 3 is used to install spare tire 4.

[0049] Wherein, the first direction is the front-rear direction of vehicle.

[0050] As an example, the rear floor structure comprises a floor cross beam 1, a spare tire support cross beam 2 and a spare tire support longitudinal beam 3; during installation, the floor cross beam 1 and the spare tire support cross beam 2 are arranged on the vehicle body longitudinal beam 6 in a first direction, the first end of the spare tire support longitudinal beam 3 is connected with the floor cross beam 1, the second end of the spare tire support longitudinal beam 3 is connected with the spare tire support cross beam 2, and the spare tire support longitudinal beam 3 is used for installing the spare tire 4; in this way, the floor cross beam 1, the spare tire support cross beam 2 and the spare tire support longitudinal beam 3 of the rear floor structure cooperatively form a H-shaped support for installing the spare tire 4, so that the installation requirement of the spare tire 4 can be met on the rear floor structure even if the space of the rear part of the vehicle body is insufficient. The H-shaped support structure of the rear floor structure in this example is simple, the manufacturing process is simple, the design freedom is large compared with the spare tire pool structure on the traditional rear floor structure, the arrangement is less limited, and the platform reuse rate of the surrounding parts can be improved; the modal and stiffness strength performance is good, the installation and use requirements of the spare tire 4 can be met, and the installation of the spare tire 4 is more reliable, and it is easier to ensure that the vehicle will not have problems such as loosening and vibration under harsh working conditions such as driving on a bumpy road, sudden acceleration, sudden braking and sudden turning.

[0051] In an embodiment, referring to Figure 1 , Figure 2 and Figure 3 , the rear floor structure further comprises a floor body 13; the floor body 13 is arranged on the vehicle body longitudinal beam 6, and the floor cross beam 1 and the spare tire support cross beam 2 are arranged on the floor body 13; at least part of the projection of the floor cross beam 1 in the up-down direction of the vehicle overlaps the floor body 13; and the floor body 13 is provided with a storage space 14 at the part corresponding to the spare tire 4.

[0052] As an example, the rear floor structure further comprises a floor body 13; during installation, the floor body 13 is arranged on the vehicle body longitudinal beam 6, and the floor cross beam 1 and the spare tire support cross beam 2 are arranged on the floor body 13; at least part of the projection of the floor cross beam 1 in the up-down direction of the vehicle overlaps the floor body 13; in this way, the contact area between the floor cross beam 1 and the floor body 13 can be increased, the support strength of the floor cross beam 1 can be improved, and the stability and safety of the rear floor structure can be ensured. The floor body 13 is provided with a storage space 14 at the part corresponding to the spare tire 4, and the storage space 14 is used for placing articles; in this way, the storage space 14 for placing articles can be reasonably designed on the premise that the installation and use requirements of the spare tire 4 are met, and the rear floor structure can be reasonably designed under the condition that the space of the rear part of the vehicle body is insufficient (for example, the rear suspension size of the vehicle is small), so that the rear floor structure has the storage space 14 and the spare tire 4 placing space.

[0053] In an embodiment, referring to Figure 1 and Figure 4The rear floor structure further comprises an adapter 5; the two ends of the spare tire support cross beam 2 are respectively provided with an adapter 5, and the adapter 5 is used to be mounted on the vehicle body longitudinal beam 6.

[0054] As an example, the rear floor structure further comprises an adapter 5; when mounted, the two ends of the spare tire support cross beam 2 are respectively provided with an adapter 5, and the adapter 5 is used to be mounted on the vehicle body longitudinal beam 6; specifically, the adapter 5 is welded on the vehicle body longitudinal beam 6, and the spare tire support cross beam 2 is screwed on the adapter 5. In this way, the spare tire support cross beam 2 is firmly mounted on the vehicle body longitudinal beam 6, and the connection between the spare tire support cross beam 2 and the vehicle body longitudinal beam 6 is improved.

[0055] In an embodiment, referring to Figure 1 and Figure 5 , the floor cross beam 1 comprises a first body 101, two second bodies 102 extending from both sides of the first body 101 in the same direction, and a third body 103 extending from one side of the two second bodies 102 away from the first body 101 in the opposite direction; the first body 101 is connected to the first end of the spare tire support longitudinal beam 3; the third body 103 is used to be connected to the vehicle body longitudinal beam 6.

[0056] As an example, the floor cross beam 1 comprises a first body 101, two second bodies 102 and a third body 103; the two second bodies 102 are components extending from both sides of the first body 101 in the same direction, and the two third bodies 103 are components extending from one side of the two second bodies 102 away from the first body 101 in the opposite direction. In this way, the floor cross beam 1 is in a few character shape structure, effectively improving the support strength of the floor cross beam 1, and realizing material saving and cost reduction. When mounted, the first body 101 is connected to the first end of the spare tire support longitudinal beam 3, and the third body 103 is used to be connected to the vehicle body longitudinal beam 6; in this way, the floor cross beam 1 is mounted on the vehicle body longitudinal beam 6, and the spare tire support longitudinal beam 3 is mounted on the floor cross beam 1, thereby providing a stable and firm mounting bracket for mounting the spare tire 4.

[0057] In an embodiment, referring to Figure 1 and Figure 6 , the spare tire support cross beam 2 comprises a cross beam body 21 and a collision energy absorption cavity 22 arranged in the cross beam body 21; the second end of the spare tire support longitudinal beam 3 is connected to the cross beam body 21.

[0058] As an example, the spare tire support cross beam 2 comprises a cross beam body 21 and a crash energy absorption cavity 22 arranged in the cross beam body 21, and the cross beam body 21 is a rectangular tubular structure; when installed, the second end of the spare tire support longitudinal beam 3 is connected with the cross beam body 21, so as to provide support for the spare tire support longitudinal beam 3; the middle part of the cross beam body 21 is provided with the crash energy absorption cavity 22 arranged in the second direction, and the crash energy absorption cavity 22 can effectively absorb the collision force transmitted to the spare tire support cross beam 2, so as to improve the performance of the spare tire support cross beam 2 and ensure the stable and safe placement of the spare tire 4.

[0059] In an embodiment, referring to Figure 1 , the spare tire support longitudinal beam 3 comprises a longitudinal beam body 31 and two connecting parts 32 respectively extending from both ends of the longitudinal beam body 31; the longitudinal beam body 31 is used for mounting the spare tire 4; and the two connecting parts 32 are respectively connected with the floor cross beam 1 and the spare tire support cross beam 2.

[0060] As an example, the spare tire support longitudinal beam 3 comprises a longitudinal beam body 31 and two connecting parts 32; the two connecting parts 32 are components respectively extending from both ends of the longitudinal beam body 31; the longitudinal beam body 31 is used for mounting the spare tire 4; and the two connecting parts 32 are respectively connected with the floor cross beam 1 and the spare tire support cross beam 2, so as to facilitate the installation of the spare tire support longitudinal beam 3 on the floor cross beam 1 and the spare tire support cross beam 2, form a H-shaped support structure, have good modal and stiffness strength performance, meet the installation and use requirements of the spare tire 4, and more firmly install the spare tire 4, so as to more easily ensure that the vehicle does not have problems such as loosening and vibration under harsh working conditions such as driving on a bumpy road, sudden acceleration, sudden braking, and sudden turning.

[0061] In an embodiment, referring to Figure 1 and Figure 7 , the longitudinal beam body 31 comprises a fourth body 311, two fifth bodies 312 respectively extending outward from both sides of the fourth body 311 in the same direction, and a sixth body 313 extending from one side of the two fifth bodies 312 away from the fourth body 311 in the opposite direction; the fourth body 311 is used for mounting the spare tire 4; and the sixth body 313 is provided with a recess 314.

[0062] As an example, the longitudinal beam body 31 comprises a fourth main body 311, two fifth main bodies 312 and a sixth main body 313; the two fifth main bodies 312 are respectively components extending outwards from two sides of the fourth main body 311 in the same direction, and the two sixth main bodies 313 are respectively components extending out from one side of the two fifth main bodies 312 away from the fourth main body 311 in opposite directions, so that the longitudinal beam body 31 has an H-shaped structure, which can improve the supporting strength of the longitudinal beam body 31 and at the same time realize the reduction of material cost. The fourth main body 311 is used for mounting the spare tire 4, and the sixth main body 313 is provided with a recess 314; in this way, convenience is provided for mounting the spare tire, and the recess 314 can absorb the impact force transmitted to the longitudinal beam body 31, so as to improve the performance of the longitudinal beam body 31 and ensure that the spare tire 4 is placed stably and safely.

[0063] In an embodiment, referring to Figure 4 , the adapter 5 comprises a main body part 51, a first lapping part 52 extending from a first side edge of the main body part 51, and two second lapping parts 53 extending from a second side edge and a third side edge of the main body part 51 in opposite directions; the first lapping part 52 and the second lapping part 53 are perpendicular to each other; the main body part 51 is used for being connected with the spare tire support cross beam 2; the first lapping part 52 and the two second lapping parts 53 are used for being connected with three side surfaces of the body longitudinal beam 6 respectively.

[0064] As an example, the adapter 5 comprises a main body part 51, a first lapping part 52 and two second lapping parts 53; the first lapping part 52 is a component extending from a first side edge of the main body part 51, and the two second lapping parts 53 are components extending from a second side edge and a third side edge of the main body part 51 in opposite directions; the first lapping part 52 and the second lapping part 53 are perpendicular to each other, so that the main body part 51, the first lapping part 52 and the two second lapping parts 53 cooperate to form a semi-enclosed structure; the main body part 51 is used for being connected with the spare tire support cross beam 2, and the first lapping part 52 and the two second lapping parts 53 are used for being connected with three side surfaces of the body longitudinal beam 6 respectively, so as to realize the multi-surface connection of the adapter 5 with the body longitudinal beam 6, increase the connection firmness, and ensure that the spare tire support cross beam 2 is stably and firmly mounted on the body longitudinal beam 6, so as to improve the stability and safety of the rear floor structure. Among them, the lapping part and the body longitudinal beam 6 are connected by welding, for example, spot welding; the main body part 51 and the spare tire support cross beam 2 are connected by screwing, for example, bolt holes are formed in the main body part 51 and the spare tire support cross beam 2, and a bolt is arranged in the bolt hole to realize the mounting of the spare tire support cross beam 2 on the main body part 51.

[0065] In an embodiment, referring to Figure 1 , Figure 2 and Figure 3The rear floor structure further comprises a first fastener 7 and a second fastener 8; the floor cross beam 1 and the spare tire support cross beam 2 are provided with first fastening holes 9, the two ends of the spare tire support longitudinal beam 3 are provided with second fastening holes 10, the middle part of the spare tire support longitudinal beam 3 is provided with a third fastening hole 11, and the spare tire 4 is provided with a fourth fastening hole 12; the first fastener 7 is arranged in the first fastening hole 9 and the second fastening hole 10, so that the spare tire support longitudinal beam 3 is installed on the floor cross beam 1 and / or the spare tire support cross beam 2; the second fastener 8 is arranged in the third fastening hole 11 and the fourth fastening hole 12, so that the spare tire 4 is installed on the spare tire support longitudinal beam 3.

[0066] As an example, the rear floor structure further comprises a first fastener 7 and a second fastener 8; during installation, the floor cross beam 1 and the spare tire support cross beam 2 are provided with first fastening holes 9, the two ends of the spare tire support longitudinal beam 3 are provided with second fastening holes 10, the first fastener 7 is arranged in the first fastening hole 9 and the second fastening hole 10, so that the spare tire support longitudinal beam 3 is installed on the floor cross beam 1 and / or the spare tire support cross beam 2; the middle part of the spare tire support longitudinal beam 3 is provided with a third fastening hole 11, and the spare tire 4 is provided with a fourth fastening hole 12; the second fastener 8 is arranged in the third fastening hole 11 and the fourth fastening hole 12, so that the spare tire 4 is installed on the spare tire support longitudinal beam 3.

[0067] The utility model embodiment provides a kind of vehicle, refer to Figure 1 、 Figure 2 And Figure 3 , comprising vehicle body longitudinal beam 6, spare tire 4 and rear floor structure;Two vehicle body longitudinal beams 6 are spaced apart along second direction, and the two ends of floor cross beam 1 are connected with two vehicle body longitudinal beams 6 respectively;The two ends of spare tire support cross beam 2 are connected with two vehicle body longitudinal beams 6 respectively;Spare tire 4 is installed on the spare tire support longitudinal beam 3 of rear floor structure.

[0068] Wherein, second direction is the left and right direction of vehicle.

[0069] As an example, the vehicle includes a vehicle body longitudinal beam 6, a spare tire 4 and a rear floor structure; two vehicle body longitudinal beams 6 are arranged in the second direction, and the two ends of the floor cross beam 1 are connected with the two vehicle body longitudinal beams 6 respectively; the two ends of the spare tire support cross beam 2 are connected with the two vehicle body longitudinal beams 6 respectively; the spare tire 4 is installed on the spare tire support longitudinal beam 3 of the rear floor structure; the rear floor structure for placing the spare tire specifically includes the floor cross beam 1, the spare tire support cross beam 2 and the spare tire support longitudinal beam 3; during installation, the floor cross beam 1 and the spare tire support cross beam 2 are arranged in the first direction on the vehicle body longitudinal beam 6, the first end of the spare tire support longitudinal beam 3 is connected with the floor cross beam 1, the second end of the spare tire support longitudinal beam 3 is connected with the spare tire support cross beam 2, and the spare tire support longitudinal beam 3 is used for installing the spare tire 4; in this way, the floor cross beam 1, the spare tire support cross beam 2 and the spare tire support longitudinal beam 3 of the rear floor structure cooperate to form a H-shaped support for installing the spare tire 4, so that the installation requirement of the spare tire 4 can be met on the rear floor structure even if the space of the rear part of the vehicle body is not enough. The H-shaped support structure of the rear floor structure in the example is simple, the manufacturing process is simple, the design has large freedom degree and is less limited compared with the spare tire pool structure on the traditional rear floor structure, the platform of the surrounding parts can be used more, the modal and stiffness strength performance is good, the installation and use requirements of the spare tire 4 can be met, the installation of the spare tire 4 is more reliable, and the problem that the spare tire 4 is loose or vibrates under harsh conditions such as driving on a bumpy road, sudden acceleration, sudden braking and sudden turning of the vehicle can be avoided; the problem of spare tire arrangement of a vehicle with A0 positioning and small rear suspension size is solved.

[0070] In the example, the specific installation process of the spare tire 4 is as follows:

[0071] The two ends of the floor cross beam 1 are connected with the two vehicle body longitudinal beams 6 through spot welding, and the floor cross beam 1 is connected with the floor body 13 through spot welding; the two ends of the spare tire support cross beam 2 are connected with the two vehicle body longitudinal beams 6 through spot welding; the first end of the spare tire support longitudinal beam 3 is connected with the floor cross beam 1 through two bolts, and the first end of the spare tire support longitudinal beam 3 is connected with the spare tire support cross beam 2 through two bolts; the spare tire 4 is placed on the spare tire support longitudinal beam 3, the rear end of the spare tire 4 is in contact with the floor cross beam 1, the front end of the spare tire 4 is in contact with the spare tire support cross beam 2, and the middle part of the spare tire 4 is screwed with the spare tire support longitudinal beam 3 through the spare tire tightening bolt, so as to realize the fixation of the spare tire 4 on the rear floor structure.

[0072] The above-described examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A rear floor structure characterized by, The floor cross beam, the spare tire support cross beam and the spare tire support longitudinal beam are provided on the vehicle body longitudinal beam in the first direction. The first end of the spare tire support longitudinal beam is connected with the floor cross beam, and the second end of the spare tire support longitudinal beam is connected with the spare tire support cross beam. The spare tire support longitudinal beam is used for mounting the spare tire. The rear floor structure further comprises a floor body.

2. The rear floor structure according to claim 1, characterized by The floor body is arranged on the vehicle body longitudinal beam, and the floor cross beam and the spare tire support cross beam are arranged on the floor body. At least part of the projection of the floor cross beam in the up-down direction of the vehicle overlaps with the floor body. The floor body is provided with a storage space at the position corresponding to the spare tire. The rear floor structure further comprises an adapter; the two ends of the spare tire support cross beam are respectively provided with an adapter; and the adapter is used for mounting on the vehicle body longitudinal beam.

3. The rear floor structure according to claim 1, characterized by The floor cross beam comprises a first main body, two second main bodies extending from the two sides of the first main body in the same direction, and a third main body extending from the side of the two second main bodies away from the first main body in the opposite direction.

4. The rear floor structure according to claim 1, characterized by The first main body is connected with the first end of the spare tire support longitudinal beam. The third main body is used for being connected with the vehicle body longitudinal beam. The spare tire support cross beam comprises a cross beam body and a crash energy absorption cavity arranged in the cross beam body.

5. The rear floor structure according to claim 1, characterized by The second end of the spare tire support longitudinal beam is connected with the cross beam body. The spare tire support longitudinal beam comprises a longitudinal beam body and two connecting parts respectively extending from the two ends of the longitudinal beam body.

6. The rear floor structure according to claim 1, characterized by The longitudinal beam body is used for mounting the spare tire. The two connecting parts are respectively connected with the floor cross beam and the spare tire support cross beam. The longitudinal beam body comprises a fourth main body, two fifth main bodies extending outwardly from the two sides of the fourth main body in the same direction, and a sixth main body extending from the side of the two fifth main bodies away from the fourth main body in the opposite direction.

7. The rear floor structure according to claim 6, characterized by The fourth main body is used for mounting the spare tire. The sixth main body is provided with a recess. The adapter comprises a main body part, a first lap joint part extending from the first side edge of the main body part, and two second lap joint parts extending from the second side edge and the third side edge of the main body part in the opposite direction; the first lap joint part and the second lap joint part are perpendicular to each other.

8. The rear floor structure according to claim 3, characterized by The main body part is used for being connected with the spare tire support cross beam. The first lap joint part and the two second lap joint parts are used for being respectively connected with the three side surfaces of the vehicle body longitudinal beam. The rear floor structure further comprises a first fastener and a second fastener; the floor cross beam and the spare tire support cross beam are respectively provided with a first fastening hole; the two ends of the spare tire support longitudinal beam are respectively provided with a second fastening hole; the middle part of the spare tire support longitudinal beam is provided with a third fastening hole; and the spare tire is provided with a fourth fastening hole.

9. The rear floor structure according to claim 1, characterized by The first fastener is arranged in the first fastening hole and the second fastening hole, so that the spare tire support longitudinal beam is mounted on the floor cross beam and / or the spare tire support cross beam. The second fastener is arranged in the third fastening hole and the fourth fastening hole, so that the spare tire is mounted on the spare tire support longitudinal beam. ​ 10. A vehicle characterized by comprising: The rear floor structure of any one of claims 1-9, wherein the rear floor structure further comprises a body side beam, a spare tire, and a rear floor structure. The two body side beams are spaced apart along a second direction. The two ends of the floor cross beam are connected to the two body side beams, respectively. The two ends of the spare tire support cross beam are connected to the two body side beams, respectively. The spare tire is mounted on the spare tire support cross beam of the rear floor structure.

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