Vehicle rear floor assembly and vehicle

Abstract

The utility model provides a vehicle rear floor assembly and a vehicle, and relates to the technical field of vehicle parts, the vehicle rear floor assembly comprises a middle floor and a rear floor front cross beam, a part of the rear floor front cross beam close to the left side or the right side of the vehicle is sunken downwards to form a step structure, and the step structure comprises a first step part and a second step part; the first step part is lower than the second step part, the middle floor is close to the front of the vehicle, the part, corresponding to the first step part, of the middle floor is sunken downwards to form a sunken part, the sunken part and the first step part define a sunken space, and the sunken space is used for installing a first seat structure. The rear floor front cross beam and the middle floor are far away from the concave space along the left-right direction of the vehicle and are used for mounting a second seat structure. On one hand, different types of seats can be mounted in the concave space to meet different configuration requirements of different users; and on the other hand, the rear floor front cross beam and the middle floor are only partially sunken downwards, so that enough oil tank arrangement space still exists below the rear floor front cross beam and the middle floor.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle parts technical field, specifically, relate to a vehicle rear floor assembly and vehicle. BACKGROUND

[0002] With the development of automobile technology, people put forward higher and higher requirements on the riding comfort of the automobile. The existing rear seat of the automobile is usually a frameless seat, the seat shape is fixed, the riding comfort is poor, and the demand of people cannot be met. If it is directly replaced by a frame administrative version seat, although the angle, position and other function adjustment of the seat can be realized, the riding comfort requirement of people can be met, but the frame administrative version seat needs to occupy a larger Z direction (the height direction of the automobile) arrangement space, that is, there needs to be enough distance between the top of the rear floor and the roof, so that in the case that the total height of the vehicle is unchanged, the oil tank arrangement space below the rear floor of the fuel vehicle and the like is smaller, and the volume of the oil tank is reduced. SUMMARY

[0003] The utility model aims at solving the technical problem that the existing rear seat riding comfort and oil tank arrangement space cannot be considered simultaneously.

[0004] On the one hand, the utility model provides a vehicle rear floor assembly, including middle floor and rear floor front crossbeam, the one end of the middle floor towards the front of the vehicle is connected with the rear floor front crossbeam, the part of the rear floor front crossbeam close to the left side or the right side of the vehicle is concave downward to form the step structure, the step structure includes the first step portion and the second step portion, the first step portion is lower than the second step portion, the part of the middle floor close to the front of the vehicle and corresponding with the first step portion is concave downward to form the recessed portion, the recessed portion and the first step portion form the recessed space, the recessed space is used for installing the first seat structure, the part of the rear floor front crossbeam and the middle floor along the left and right directions of the vehicle and away from the recessed space is used for installing the second seat structure.

[0005] Optionally, the vehicle rear floor assembly further includes longitudinal beam and C ring lower crossbeam, two longitudinal beams are located at both ends of the middle floor along the left and right directions of the vehicle respectively, the C ring lower crossbeam is connected with the one end of the middle floor towards the rear of the vehicle, the rear floor front crossbeam, the C ring lower crossbeam and the longitudinal beam close to the side of the recessed portion are respectively provided with frame seat connecting portion.

[0006] Optionally, the seat-with-frame connecting part comprises a first connecting hole, a second connecting hole, a third connecting hole and a fourth connecting hole, the first connecting hole is located on the longitudinal beam, the second connecting hole and the third connecting hole are located on the rear floor front cross beam, the fourth connecting hole is located on the C-ring lower cross beam, the straight line on which the first connecting hole is located is parallel to the straight line on which the third connecting hole and the fourth connecting hole are located, and both straight lines are arranged along the front-rear direction of the vehicle.

[0007] Optionally, the projection of the point on which the first connecting hole is located on the straight line on which the third connecting hole and the fourth connecting hole are located is located between the third connecting hole and the fourth connecting hole.

[0008] Optionally, the vehicle rear floor assembly further comprises a C-ring upper cross beam, one end of each of the two longitudinal beams towards the front of the vehicle is connected with the rear floor front cross beam, one end of each of the two longitudinal beams towards the rear of the vehicle extends into the C-ring upper cross beam and the C-ring lower cross beam, and is connected with the C-ring upper cross beam and the C-ring lower cross beam.

[0009] Optionally, the vehicle rear floor assembly further comprises a rear wheel cover, a rear seat cross beam and a connecting support, the two rear wheel covers are respectively located at the two ends of the middle floor along the left-right direction of the vehicle, the rear seat cross beam is located on the side of the second seat structure towards the rear of the vehicle and is used for supporting the second seat structure, and the second seat structure is a second seat without frame;

[0010] When the first seat without frame is installed in the recessed space, the two ends of the rear seat cross beam are respectively connected with the two rear wheel covers, and the middle part of the rear seat cross beam is connected with the middle part of the C-ring upper cross beam and the middle part of the C-ring lower cross beam through the connecting support; when the seat-with-frame is installed in the recessed space, one end of the rear seat cross beam is connected with one of the two rear wheel covers away from the seat-with-frame, the other end of the rear seat cross beam is connected with the connecting support, and the connecting support is respectively connected with the middle part of the C-ring upper cross beam and the middle part of the C-ring lower cross beam.

[0011] Optionally, when the seat-with-frame is installed in the recessed space, a fixing part for fixing the second seat without frame is arranged on the rear seat cross beam; when the first seat without frame is installed in the recessed space, fixing parts for respectively fixing the first seat without frame and the second seat without frame are arranged on the rear seat cross beam.

[0012] Optionally, the rear floor front cross beam and the front side of the middle floor enclose a first closed cavity.

[0013] And / or, the C-ring lower crossbeam is located on the side of the middle floor towards the underside of the vehicle, the C-ring lower crossbeam is recessed towards the underside of the vehicle to form a second enclosed cavity with the middle floor;

[0014] And / or, the C-ring upper crossbeam is located on the side of the middle floor towards the upside of the vehicle, the C-ring upper crossbeam is recessed towards the upside of the vehicle to form a third enclosed cavity with the middle floor.

[0015] Optionally, a first frameless seat connecting part is arranged in the recessed part, and a second frameless seat connecting part is arranged on the part of the middle floor away from the recessed part in the left-right direction of the vehicle; the first frameless seat connecting part is located at one end of the recessed part towards the front of the vehicle, and the second frameless seat connecting part is provided with three, one of which is located at one end of the middle floor towards the rear of the vehicle, and the other two are located at one end of the middle floor towards the front of the vehicle.

[0016] In another aspect, the utility model also provides a vehicle, which comprises the vehicle rear floor assembly.

[0017] The vehicle rear floor assembly and the vehicle have at least the following advantages compared with the prior art:

[0018] The first seat structure can be a framed seat or a first frameless seat, and the second seat structure can be a second frameless seat. A part of the front crossbeam of the rear floor, such as a part of the front crossbeam of the rear floor close to the right side of the vehicle, is recessed downward to form a stepped structure, a first step part of the stepped structure is lower than a second step part, a part of the middle floor close to the front of the vehicle and corresponding to the first step part is recessed downward to form a recessed part, and the first step part and the recessed part jointly form a recessed space, that is, the front end of the middle floor and the front crossbeam of the rear floor form a left-high right-low stepped structure as a whole, and the low part, that is, the recessed space, can be installed with a framed seat or a first frameless seat. When a framed seat is installed at the low part and a second frameless seat is installed at the high part, a first configuration mode of the rear seats is formed, and when a first frameless seat is installed at the low part and a second frameless seat is installed at the high part, a second configuration mode of the rear seats is formed, so that the configuration mode of the rear seats can be flexibly selected according to different needs, and the comfort requirements of different people for the rear seats of the vehicle are met. In addition, compared with the scheme in which the front crossbeam of the rear floor and the middle floor are recessed downward as a whole to arrange a framed seat at the rear of the vehicle, only a part of the front crossbeam of the rear floor and the middle floor is recessed downward in the utility model, so that there is still sufficient space for arranging an oil tank below the front crossbeam of the rear floor and the middle floor, and the volume of the oil tank is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a structural schematic view of a vehicle rear floor assembly according to an embodiment of the utility model.

[0020] Figure 2 is a sectional view of the middle floor of the utility model; Figure 1

[0021] Figure 3 is a structural schematic diagram of the middle floor of the utility model; Figure 1

[0022] Figure 4 is a structural schematic diagram of the middle floor of the utility model; Figure 3

[0023] Figure 5 is a structural schematic diagram of the middle floor of the utility model.

[0024] Explanation of reference signs:

[0025] 1, middle floor; 11, recessed part; 12, first frameless seat connecting part; 13, second frameless seat connecting part; 2, rear floor front cross beam; 211, first step part; 212, second step part; 22, second connecting hole; 23, third connecting hole; 3, longitudinal beam; 31, first connecting hole; 4, C ring lower cross beam; 41, fourth connecting hole; 5, C ring upper cross beam; 6, rear wheel cover; 7, rear seat cross beam; 8, connecting support; 100, first closed cavity; 200, second closed cavity; 300, third closed cavity. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.

[0027] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "cooperation" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0028] In addition, it should be noted that in the description of the utility model, the terms such as "upper", "lower", "front", "rear" and other words indicating the position of the terms in the embodiments only indicate the positional relationship based on the drawings of the specification, and do not represent that the elements and devices and the like must be operated according to the specific position and limited operation and method, structure in the specification, and such positional terms do not constitute a limitation on the utility model.

[0029] ​​​An XYZ coordinate system is established herein. The X-axis represents the front-rear direction of the vehicle, the positive direction of the X-axis represents the front of the vehicle, the negative direction of the X-axis represents the rear of the vehicle, the Y-axis represents the left-right direction of the vehicle, the positive direction of the Y-axis represents the left of the vehicle, the negative direction of the Y-axis represents the right of the vehicle, the Z-axis represents the up-down direction of the vehicle, the positive direction of the Z-axis represents the top of the vehicle, and the negative direction of the Z-axis represents the bottom of the vehicle. It should be noted that the aforementioned X-axis, Y-axis and Z-axis are only used for facilitating the description of the utility model and simplifying the description, and are not used for indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the utility model.

[0030] As shown in Figure 1 , Figure 3 and Figure 5 , the utility model embodiment of a vehicle rear floor assembly, including middle floor 1 and rear floor front beam 2, the one end of the middle floor 1 towards the front of the vehicle is connected with the rear floor front beam 2, the part of the rear floor front beam 2 close to the left side or right side of the vehicle is concave downward to form a step structure, the step structure includes first step part 211 and second step part 212, the first step part 211 is lower than the second step part 212, the part of the middle floor 1 close to the front of the vehicle and corresponding with the first step part 211 is concave downward to form recessed part 11, the recessed part 11 and the first step part 211 form a recessed space, the recessed space is used to install first seat structure, the part of the rear floor front beam 2 and the middle floor 1 away from the recessed space along the left-right direction of the vehicle is used to install second seat structure.

[0031] Specifically, the one end of the middle floor 1 towards the front of the vehicle, i.e. the one end of the middle floor 1 along the positive direction of the X-axis, is connected with the rear floor front beam 2, and the space above the middle floor 1 and the rear floor front beam 2 is used to install the rear seat of the vehicle. The first seat structure can be a skeleton seat or a first non-skeleton seat, and the second seat structure can be a second non-skeleton seat.

[0032] The rear floor front cross beam 2 is a long structure extending along the Y-axis direction, and a part of the rear floor front cross beam 2 close to the left side or the right side of the vehicle, such as a part close to the right side of the vehicle (a part along the negative direction of the Y-axis) can be recessed towards the lower side of the vehicle to form a stepped structure, the first step part 211 and the second step part 212 of the stepped structure are horizontally arranged, and the first step part 211 is arranged lower than the second step part 212, and a part of the middle floor 1 close to the front side of the vehicle and corresponding to the first step part 211 is recessed downwards to form a recessed part 11, that is, the front right side of the middle floor 1 is provided with an L-shaped recessed part 11, and the first step part 211 and the recessed part 11 are smoothly connected to form an L-shaped recessed space, that is, the whole formed by the front end of the middle floor 1 and the rear floor front cross beam 2 is in the form of a left high right low step, and the low part or the recessed space can be used to install a seat with a frame or a first seat without a frame. When the recessed space is located at the front right side of the middle floor 1 and the right side of the rear floor front cross beam 2, the parts of the rear floor front cross beam 2 and the middle floor 1 away from the recessed space along the left-right direction of the vehicle are the parts on the left side of the rear floor front cross beam 2 and the front left side of the middle floor 1, that is, the second seat without a frame is installed on the parts on the left side of the rear floor front cross beam 2 and the front left side of the middle floor 1.

[0033] It should be noted that when the first seat without a frame is installed in the recessed space, in order to ensure that the seat surfaces of the first seat without a frame and the second seat without a frame on the left and right sides of the vehicle are at the same height, the thickness of the cushion part of the first seat without a frame can be increased.

[0034] The parts of the rear floor front cross beam 2 along the left-right direction are recessed downwards to form a stepped structure, which is used to accommodate and install the seat with a frame, and is also used to ensure that the seat with a frame does not interfere with the rear floor front cross beam 2 when the seat with a frame realizes the functions of sliding along the front-rear direction of the vehicle and folding and unfolding the foot support.

[0035] In the embodiment, the seat with a frame can be installed in the recessed space, and the second seat without a frame is installed on the parts of the middle floor 1 and the rear floor front cross beam 2 away from the recessed space along the left-right direction of the vehicle; or the first seat without a frame can be installed in the recessed space, and the second seat without a frame is installed on the parts of the middle floor 1 and the rear floor front cross beam 2 away from the recessed space along the left-right direction of the vehicle, so as to realize the flexible selection of the configuration mode of the rear seats according to different needs and meet the requirements of different people on the comfort of the rear seats of the vehicle. In addition, compared with the scheme that the rear floor front cross beam 2 and the middle floor 1 are recessed downwards as a whole to arrange the seat with a frame at the rear of the vehicle, the rear floor front cross beam 2 and the middle floor 1 of the utility model are only partially recessed downwards, so that there is still enough space for arranging the fuel tank below the rear floor front cross beam 2 and the middle floor 1, thereby ensuring the volume of the fuel tank.

[0036] As Figure 1 , Figure 3 and Figure 4 shown, the vehicle rear floor assembly optionally further comprises longitudinal beams 3, each of which is located at one end of the middle floor 1 in the left-right direction of the vehicle, and a C-ring lower cross beam 4 connected to one end of the middle floor 1 toward the rear of the vehicle; the first seat structure is a framed seat or a first frameless seat, and the rear floor front cross beam 2, the C-ring lower cross beam 4, and the longitudinal beam 3 near one side of the recess 11 are each provided with a framed seat connecting portion.

[0037] Specifically, the middle floor 1 is provided with longitudinal beams 3 at both ends in the left-right direction of the vehicle, i.e., in the direction indicated by the Y axis, and the longitudinal beams 3 are arranged to extend substantially in the front-rear direction of the vehicle, i.e., in the direction indicated by the X axis, and the middle floor 1 is connected to the longitudinal beams 3. The C-ring lower cross beam 4 extends in the left-right direction of the vehicle, i.e., in the direction indicated by the Y axis, and is located below the rear of the middle floor 1 and is connected to the middle floor 1.

[0038] Taking the recess 11 provided at the right front of the middle floor 1 as an example, the longitudinal beam 3 near one side of the recess 11 among the two longitudinal beams 3, i.e., the longitudinal beam 3 on the right side of the vehicle. In the following, the embodiments of the present application will be introduced taking the recess 11 provided at the right front of the middle floor 1 as an example.

[0039] Since the framed seat is usually connected to the vehicle-related components through the slide rails at the bottom, the contact area with the vehicle-related components is small. In order to ensure the installation strength of the framed seat, the embodiments are provided with framed seat connecting portions on the rear floor front cross beam 2, the C-ring lower cross beam 4, and the longitudinal beam 3, which have high strength. When the framed seat needs to be installed, the framed seat is connected to the rear floor front cross beam 2, the C-ring lower cross beam 4, and the longitudinal beam 3, respectively, to ensure the stability of its installation and improve the NVH (Noise, Vibration, and Harshness) performance of the vehicle.

[0040] In addition, by providing framed seat connecting portions on the rear floor front cross beam 2, the C-ring lower cross beam 4, and the longitudinal beam 3 on the right side, the framed seat only needs to be connected to the rear floor front cross beam 2, the C-ring lower cross beam 4, and the longitudinal beam 3 on the right side, which can realize its installation on the vehicle without the need for additional beams in the middle of the middle floor 1, reducing the number of parts and simplifying the overall structure of the rear floor assembly.

[0041] As Figure 4As shown, optionally, the skeleton-equipped seat connecting part comprises a first connecting hole 31, a second connecting hole 22, a third connecting hole 23 and a fourth connecting hole 41, the first connecting hole 31 is located on the longitudinal beam 3, the second connecting hole 22 and the third connecting hole 23 are located on the rear floor front cross beam 2, the fourth connecting hole 41 is located on the C-ring lower cross beam 4, the straight line where the first connecting hole 31 and the second connecting hole 22 are located is parallel to the straight line where the third connecting hole 23 and the fourth connecting hole 41 are located, and is arranged along the front-rear direction of the vehicle.

[0042] Specifically, the right longitudinal beam 3 is provided with a recessed area at a position corresponding to the recessed space, the first connecting hole 31 is arranged in the recessed area, and the recessed area is in communication with the recessed space to jointly install the seat. The skeleton-equipped seat has two slide rails, the rear end of one of the slide rails is connected with the first connecting hole 31 through corresponding fasteners, and the front end is connected with the second connecting hole 22 through corresponding fasteners, the front end of the other slide rail is connected with the third connecting hole 23 through corresponding fasteners, and the rear end is connected with the fourth connecting hole through corresponding fasteners, so as to realize the connection between the skeleton-equipped seat and the longitudinal beam 3, the rear floor front cross beam 2 and the C-ring lower cross beam 4, and the connection mode is simple. At the same time, the straight line where the first connecting hole 31 and the second connecting hole 22 are located is parallel to the straight line where the third connecting hole 23 and the fourth connecting hole 41 are located, which can ensure that the two slide rails are parallel and extend along the direction of the X axis, and meet the sliding needs of the skeleton-equipped seat along the front-rear direction of the vehicle.

[0043] It should be noted that a via hole can be arranged on the middle floor 1 at a position corresponding to the fourth connecting hole 41, and the fasteners can pass through the corresponding positions on the skeleton-equipped seat, the via hole and the fourth connecting hole 41 in sequence, so as to realize the connection between the skeleton-equipped seat and the C-ring lower cross beam 4.

[0044] As shown, Figure 4 Optionally, the projection of the point where the first connecting hole 31 is located on the straight line where the third connecting hole 23 and the fourth connecting hole 41 are located is located between the third connecting hole 23 and the fourth connecting hole 41. That is, the first connecting hole 31 and the fourth connecting hole 41 not only have a position difference in the left-right direction, but also have a position difference in the front-rear direction, or in other words, the first connecting hole 31 is located in the right front of the fourth connecting hole 41. In this way, the points where the first connecting hole 31, the second connecting hole 22, the third connecting hole 23 and the fourth connecting hole 41 are located are arranged in a C shape, which further ensures the stability of the installation of the skeleton-equipped seat.

[0045] As shown, Figures 2-4As shown, optionally, the vehicle rear floor assembly also includes a C-ring upper crossbeam 5, the two longitudinal beams 3 having their front ends connected to the rear floor front crossbeam 2, and the two longitudinal beams 3 having their rear ends extended between the C-ring upper crossbeam 5 and the C-ring lower crossbeam 4, and connected to the C-ring upper crossbeam 5 and the C-ring lower crossbeam 4.

[0046] Specifically, the upper crossbeam 5 of the C-ring can be a C-shaped structure or a U-shaped structure with the opening facing upwards. The upper crossbeam 5 and the lower crossbeam 4 of the C-ring are located on the upper and lower sides of the rear end of the longitudinal beam 3, respectively. The upper crossbeam 5 and the lower crossbeam 4 of the C-ring constitute the C-ring crossbeam. The left and right ends of the front crossbeam 2 of the rear floor are connected to the front ends of the two longitudinal beams 3, respectively. The left and right ends of the C-ring crossbeam are connected to the rear ends of the two longitudinal beams 3, respectively. The C-ring crossbeam, the two longitudinal beams 3 and the front crossbeam 2 of the rear floor enclose a closed frame structure with good stability. The connecting parts of each framed seat are located on the longitudinal beam 3, the front crossbeam 2 of the rear floor and the C-ring crossbeam, respectively, to ensure the rigidity of the framed seat installation point.

[0047] The rear end of the longitudinal beam 3 extends between the upper crossbeam 5 and the lower crossbeam 4 of the C-ring, so that the longitudinal beam 3 can be connected to both the upper crossbeam 5 and the lower crossbeam 4 of the C-ring at the same time. This ensures the stability of the connection between the longitudinal beam 3 and the C-ring crossbeam, and also ensures the installation stability of the framed seat.

[0048] like Figures 3-4 As shown, optionally, the vehicle rear floor assembly also includes a rear wheel cover 6, a rear seat crossbeam 7 and a connecting bracket 8. The two rear wheel covers 6 are respectively located at both ends of the middle floor 1 along the left and right direction of the vehicle. The rear seat crossbeam 7 is located on the side of the second seat structure facing the rear of the vehicle and is used to support the second seat structure. The second seat structure is a second frameless seat.

[0049] When the first frameless seat is installed in the recessed space, both ends of the rear seat crossbeam 7 are connected to the two rear wheel arches 6 respectively, and the middle part of the rear seat crossbeam 7 is connected to the middle part of the upper crossbeam 5 of the C-ring and the middle part of the lower crossbeam 4 of the C-ring through the connecting bracket 8; when the framed seat is installed in the recessed space, one end of the rear seat crossbeam 7 is connected to the rear wheel arch 6 that is furthest from the framed seat, and the other end of the rear seat crossbeam 7 is connected to the connecting bracket 8, and the connecting bracket 8 is connected to the middle part of the upper crossbeam 5 of the C-ring and the middle part of the lower crossbeam 4 of the C-ring respectively.

[0050] Specifically, the two rear wheel covers 6 are respectively located on the left and right sides of the middle floor 1, and the two rear wheel covers 6 are oppositely arranged. The left rear wheel cover 6 is connected with the left end of the C-ring upper cross beam 5, the left end of the C-ring lower cross beam 4 and the left longitudinal beam 3. The right rear wheel cover 6 is connected with the right end of the C-ring upper cross beam 5, the right end of the C-ring lower cross beam 4 and the right longitudinal beam 3. The rear seat cross beam 7 can be a hollow structure, which has high strength and light weight.

[0051] When the first frameless seat is installed in the recessed space, that is, the entire rear row of the vehicle is installed with frameless seats, the shape of the frameless seat is relatively fixed, and there is no need for forward and backward movement adjustment. A rear seat cross beam 7 is arranged on the side of the first frameless seat and the second frameless seat facing the rear of the vehicle, that is, the side of the X-axis negative direction. The rear seat cross beam 7 extends along the direction indicated by the Y-axis and is located above the longitudinal beam 3. The two ends of the rear seat cross beam 7 are respectively connected with the two rear wheel covers 6, and the middle part is connected with the two connecting supports 8. The connecting supports 8 are arranged on the C-ring upper cross beam 5 and the C-ring lower cross beam 4 and are respectively connected with the C-ring upper cross beam 5 and the C-ring lower cross beam 4. In this way, the connection between the rear wheel cover 6, the C-ring upper cross beam 5, the C-ring lower cross beam 4 and the rear seat cross beam 7 is realized, the rigidity of the rear floor assembly is improved, and the NVH performance of the vehicle is improved.

[0052] When the frame seat is installed in the recessed space, in order to avoid interference between the frame seat and the rear seat cross beam 7 when the frame seat slides forward and backward, the rear seat cross beam 7 can be arranged to be relatively short, so that the rear seat cross beam 7 is located only behind the second frameless seat. One end of the rear seat cross beam 7 is connected with the left rear wheel cover 6, and the other end is connected with the connecting support 8. The connecting support 8 is arranged on the C-ring upper cross beam 5 and the C-ring lower cross beam 4 and is respectively connected with the middle part of the C-ring upper cross beam 5 and the middle part of the C-ring lower cross beam 4. In this way, the rigidity of the rear floor assembly is improved, and the NVH performance of the vehicle is improved on the premise of ensuring that the frame seat can smoothly realize the corresponding function.

[0053] Optionally, when the frame seat is installed in the recessed space, the rear seat cross beam 7 is provided with a fixing part for fixing the second frameless seat. When the first frameless seat is installed in the recessed space, the rear seat cross beam 7 is provided with a fixing part for fixing the first frameless seat and the second frameless seat, respectively. The fixing part can be a fixing hole arranged on the rear seat cross beam 7. By arranging the fixing part on the rear seat cross beam 7, the first frameless seat and the second frameless seat can be connected with the rear seat cross beam 7, so as to avoid movement of the first frameless seat and the second frameless seat.

[0054] As shown in Figure 2 Optionally, the rear floor front cross beam 2 and the front side of the middle floor 1 form a first closed cavity 100;

[0055] And / or, the C-ring lower crossbeam 4 is located on the side of the middle floor 1 towards the lower side of the vehicle, and the C-ring lower crossbeam 4 is recessed towards the upper side of the vehicle to form a second enclosed cavity 200 with the middle floor 1;

[0056] And / or, the C-ring upper crossbeam 5 is located on the side of the middle floor 1 towards the upper side of the vehicle, and the C-ring upper crossbeam 5 is recessed towards the upper side of the vehicle to form a third enclosed cavity 300 with the middle floor 1.

[0057] In the embodiment, by forming the first enclosed cavity 100 between the rear floor front crossbeam 2 and the front side of the middle floor 1, the first enclosed cavity 100 is arranged along the extension direction of the rear floor front crossbeam 2, that is, the rear floor front crossbeam 2 and the middle floor 1 form an enclosed rectangular frame structure, the cross-sectional size of the first enclosed cavity 100 is large, and the torsional deformation resistance of the whole formed by the middle floor 1 and the rear floor front crossbeam 2 can be improved by forming the first enclosed cavity 100, so that the stress distribution of the middle floor 1 and the rear floor front crossbeam 2 is more uniform when stressed, the deformation is smaller, the stiffness of the whole formed by the middle floor 1 and the rear floor front crossbeam 2 is improved, that is, the stiffness of the seat mounting point with a frame on the rear floor front crossbeam 2 is improved.

[0058] The C-ring lower crossbeam 4 is located below the rear of the middle floor 1, the front and rear ends of the C-ring lower crossbeam 4 are connected with the middle floor 1 respectively, the front end of the C-ring lower crossbeam 4 is low, the rear end is high, and the part between the front and rear ends is recessed downward to form a second enclosed cavity with the middle floor 1, the torsional deformation resistance of the whole formed by the middle floor 1 and the C-ring lower crossbeam 4 can be improved by forming the second enclosed cavity 200, so that the stress distribution of the middle floor 1 and the C-ring lower crossbeam 4 is more uniform when stressed, the deformation is smaller, the stiffness of the whole formed by the middle floor 1 and the C-ring lower crossbeam 4 is improved, that is, the stiffness of the seat mounting point with a frame on the C-ring lower crossbeam 4 is improved.

[0059] The C-ring upper crossbeam 5 is located above the rear of the middle floor 1, the front and rear ends of the C-ring upper crossbeam 5 are connected with the middle floor 1 respectively, and the part between the front and rear ends of the C-ring upper crossbeam 5 is raised upward to form a third enclosed cavity 300 with the middle floor 1 to improve the stiffness of the whole formed by the middle floor 1 and the C-ring upper crossbeam 5.

[0060] By forming the first enclosed cavity 100, the second enclosed cavity 200 and the third enclosed cavity 300, the torsional stiffness of the rear floor assembly can be improved, the body vibration can be reduced, and the NVH performance of the vehicle can be improved.

[0061] As Figure 1As shown, optionally, a first frameless seat connecting part 12 is arranged in the recess 11, and a second frameless seat connecting part 13 is arranged on the middle floor 1 away from the recess 11 along the left-right direction of the vehicle; the first frameless seat connecting part 12 is located at one end of the recess 11 towards the front of the vehicle, and the second frameless seat connecting part 13 is provided with three, one of which is located at one end of the middle floor 1 towards the rear of the vehicle, and the other two are located at one end of the middle floor 1 towards the front of the vehicle.

[0062] Specifically, the first frameless seat connecting part 12 can be arranged on the right side of the recess 11, i.e. the middle floor 1, and the second frameless seat connecting part 13 can be arranged on the left side of the middle floor 1, so that the first frameless seat can be connected with the middle floor 1 through the first frameless seat connecting part 12, and the second frameless seat can be connected with the middle floor 1 through the second frameless seat connecting part 13, thereby achieving the installation of the first frameless seat and the second frameless seat on the middle floor 1, which is simple in installation mode, and the bottom of the first frameless seat and the second frameless seat can be in surface-to-surface contact with the middle floor 1, so that the contact area is large and the installation stability is good.

[0063] When a frame seat is arranged on the right side of the rear row of the vehicle and a second frameless seat is arranged on the left side, the rear end of the second frameless seat can be connected with the middle floor 1 through one second frameless seat connecting part 13 located at the rear of the middle floor 1, and the front end of the second frameless seat can be connected with the middle floor 1 through two second frameless seat connecting parts 13 located at the front of the middle floor 1, thereby achieving the fixation of the front and rear ends of the second frameless seat and ensuring the installation stability of the second frameless seat on the middle floor 1; in addition, the three second frameless seat connecting parts 13 are arranged in a triangular shape, which can further improve the installation stability of the second frameless seat on the middle floor 1.

[0064] When a first frameless seat is arranged on the right side of the rear row of the vehicle and a second frameless seat is arranged on the left side, the seat cushion parts of the first frameless seat and the second frameless seat can be connected together, the front ends of the two frameless seats can be connected and fixed with the middle floor 1 through the first frameless seat connecting part 12 and the two second frameless seat connecting parts 13 located at the front of the middle floor 1, and the rear ends of the two frameless seats can be connected and fixed with the middle floor 1 through one second frameless seat connecting part 13 located at the rear of the middle floor 1, thereby ensuring the firm connection of the two frameless seats with the middle floor 1. In addition, one second frameless seat connecting part 13 located close to the rear of the vehicle can be arranged close to the side of the first frameless seat, so that the stress of the two frameless seats is more uniform.

[0065] Another embodiment of the utility model provides a vehicle, including above-mentioned vehicle rear floor assembly. The vehicle has the same advantages as the above-mentioned vehicle rear floor assembly compared with prior art, and will not be repeated.

[0066] Although the utility model discloses as above, the protection scope of the utility model is not limited to this only.The person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will all fall into the protection scope of the utility model.

Claims

1. A vehicle rear floor assembly, characterized in that, The system includes a middle floor (1) and a front crossbeam (2) of the rear floor. The end of the middle floor (1) facing the front of the vehicle is connected to the front crossbeam (2) of the rear floor. A portion of the front crossbeam (2) of the rear floor is recessed downward near the left or right side of the vehicle to form a step structure. The step structure includes a first step (211) and a second step (212). The first step (211) is lower than the second step (212). A portion of the middle floor (1) facing the front of the vehicle and corresponding to the first step (211) is recessed downward to form a recess (11). The recess (11) and the first step (211) together form a recessed space. The recessed space is used to install a first seat structure. The portions of the front crossbeam (2) of the rear floor and the middle floor (1) away from the recessed space along the left and right directions of the vehicle are used to install a second seat structure.

2. The vehicle rear floor assembly according to claim 1, characterized in that, It also includes longitudinal beams (3) and lower crossbeams (4) of the C-ring. The two longitudinal beams (3) are located at both ends of the middle floor (1) along the left and right direction of the vehicle. The lower crossbeams (4) of the C-ring are connected to the end of the middle floor (1) facing the rear of the vehicle. The first seat structure is a framed seat or a frameless seat. The front crossbeam (2) of the rear floor, the lower crossbeams (4) of the C-ring, and the longitudinal beams (3) near the recess (11) are respectively provided with framed seat connecting parts.

3. The vehicle rear floor assembly according to claim 2, characterized in that, The framed seat connection includes a first connecting hole (31), a second connecting hole (22), a third connecting hole (23), and a fourth connecting hole (41). The first connecting hole (31) is located on the longitudinal beam (3), the second connecting hole (22) and the third connecting hole (23) are located on the front crossbeam (2) of the rear floor, and the fourth connecting hole (41) is located on the lower crossbeam (4) of the C-ring. The straight line where the first connecting hole (31) and the second connecting hole (22) are located is parallel to the straight line where the third connecting hole (23) and the fourth connecting hole (41) are located, and both are set along the front-rear direction of the vehicle.

4. The vehicle rear floor assembly according to claim 3, characterized in that, The projection of the point where the first connecting hole (31) is located on the straight line where the third connecting hole (23) and the fourth connecting hole (41) are located is between the third connecting hole (23) and the fourth connecting hole (41).

5. The vehicle rear floor assembly according to claim 2, characterized in that, It also includes an upper crossbeam (5) of the C-ring, the two longitudinal beams (3) are connected to the front crossbeam (2) of the rear floor at the front end of the vehicle, and the two longitudinal beams (3) extend into the space between the upper crossbeam (5) of the C-ring and the lower crossbeam (4) of the C-ring, and are connected to the upper crossbeam (5) of the C-ring and the lower crossbeam (4) of the C-ring.

6. The vehicle rear floor assembly according to claim 5, characterized in that, It also includes rear wheel covers (6), rear seat crossbeams (7) and connecting brackets (8). The two rear wheel covers (6) are located at both ends of the middle floor (1) along the left and right direction of the vehicle. The rear seat crossbeams (7) are located on the side of the second seat structure facing the rear of the vehicle and are used to support the second seat structure. The second seat structure is a second frameless seat. When the first frameless seat is installed in the recessed space, both ends of the rear seat crossbeam (7) are connected to the two rear wheel arches (6) respectively, and the middle part of the rear seat crossbeam (7) is connected to the middle part of the upper crossbeam (5) of the C-ring and the middle part of the lower crossbeam (4) of the C-ring through the connecting bracket (8); when the framed seat is installed in the recessed space, one end of the rear seat crossbeam (7) is connected to the rear wheel arch (6) that is away from the framed seat, and the other end of the rear seat crossbeam (7) is connected to the connecting bracket (8), and the connecting bracket (8) is connected to the middle part of the upper crossbeam (5) of the C-ring and the middle part of the lower crossbeam (4) of the C-ring respectively.

7. The vehicle rear floor assembly according to claim 6, characterized in that, When the framed seat is installed in the recessed space, the rear seat crossbeam (7) is provided with a fixing part for fixing the second frameless seat; when the first frameless seat is installed in the recessed space, the rear seat crossbeam (7) is provided with fixing parts for fixing the first frameless seat and the second frameless seat respectively.

8. The vehicle rear floor assembly according to claim 5, characterized in that, The front crossbeam (2) of the rear floor and the front side of the middle floor (1) enclose a first closed cavity (100); And / or, the lower crossbeam (4) of the C-ring is located on the side of the middle floor (1) facing downwards from the vehicle, and the lower crossbeam (4) of the C-ring is recessed towards the lower side of the vehicle to form a second closed cavity (200) between itself and the middle floor (1); And / or, the upper crossbeam (5) of the C-ring is located on the side of the middle floor (1) facing the vehicle, and the upper crossbeam (5) of the C-ring is recessed towards the vehicle to form a third closed cavity (300) between itself and the middle floor (1).

9. The vehicle rear floor assembly according to claim 6, characterized in that, The recess (11) is provided with a first frameless seat connection part (12), and the middle floor (1) is provided with a second frameless seat connection part (13) on the part away from the recess (11) in the left-right direction of the vehicle; the first frameless seat connection part (12) is located at the end of the recess (11) facing the front of the vehicle, and there are three second frameless seat connection parts (13), one of which is located at the end of the middle floor (1) facing the rear of the vehicle, and the other two are located at the end of the middle floor (1) facing the front of the vehicle.

10. A vehicle, characterized in that, Includes the vehicle rear floor assembly as described in any one of claims 1-9.

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