CN218431444U

CN218431444U - Rear floor assembly and vehicle

Info

Publication number: CN218431444U
Application number: CN202223152098.1U
Authority: CN
Inventors: 刘越; 王维松
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-02-03
Anticipated expiration: 2032-11-24

Abstract

The utility model discloses a back floor assembly and vehicle, back floor assembly includes: a rear floor cross beam and a rear floor longitudinal beam; the inner end of the connecting plate is connected with the rear floor cross beam, the outer end of the connecting plate is lapped above the rear floor longitudinal beam, an installation space is defined by the outer end of the connecting plate and the rear floor longitudinal beam, and the connecting plate is provided with a rear auxiliary frame installation position; the supporting plate is located in the installation space and supported between the connecting plate and the rear floor longitudinal beam. The utility model discloses a back floor assembly, its back floor crossbeam passes through the connecting plate with the back floor longeron and connects, is convenient for strengthen the rigidity of whole frame, and the backup pad can play the effect of support to the connecting plate to promote the dynamic stiffness of back sub vehicle frame installation position department effectively, thereby improve the vibration isolation performance of back sub vehicle frame installation position department, do benefit to the NVH performance that improves the vehicle.

Description

Rear floor assembly and vehicle

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to a rear floor assembly and vehicle are related to.

Background

The road noise level of the automobile in the driving state is a key factor for measuring the quality of the automobile. The excitation source of vehicle noise is the road surface and the engine, the road surface is transmitted to the vehicle body mounting point through the suspension and the auxiliary frame, and then the vibration is transmitted to the whole vehicle body through the vehicle body mounting point, the vehicle body vibration causes air vibration, and the vibrating air causes the eardrum vibration of a driver and passengers, so that people feel the noise.

In the prior art, the dynamic stiffness level of the rear subframe mounting structure is low, so that the vibration transmitted to a vehicle body cannot be effectively reduced, and the noise in the vehicle is large.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a rear floor assembly can promote the dynamic stiffness of back sub vehicle frame installation position department effectively, reduces the vibration that transmits to the automobile body, does benefit to the NVH performance that improves the vehicle.

According to the utility model discloses back floor assembly, include: a rear floor cross beam and a rear floor longitudinal beam; the inner end of the connecting plate is connected with the rear floor cross beam, the outer end of the connecting plate is lapped above the rear floor longitudinal beam, an installation space is defined by the outer end of the connecting plate and the rear floor longitudinal beam, and a rear auxiliary frame installation position is arranged at the outer end of the connecting plate; the supporting plate is located in the installation space and supported between the connecting plate and the rear floor longitudinal beam.

According to the utility model discloses back floor assembly, its back floor crossbeam passes through the connecting plate with the back floor longeron and connects, be convenient for strengthen the rigidity of whole frame, back sub vehicle frame installation position sets up in the outer end of connecting plate, and the backup pad supports between connecting plate and back floor longeron, and like this, can play the effect of support to the connecting plate through setting up the backup pad, thereby promote the dynamic rigidity of back sub vehicle frame installation position department effectively, thereby improve the vibration isolation performance of back sub vehicle frame installation position department, do benefit to the NVH performance that improves the vehicle.

According to the utility model discloses back floor assembly of some embodiments, the backup pad includes supporting part and connecting portion, the supporting part support in the outer end of connecting plate with in order to seal between the back floor longeron installation space's opening, connecting portion with the supporting part is buckled and is linked to each other, just connecting portion with the lower surface of connecting plate links to each other.

According to the utility model discloses back floor assembly of some embodiments, the backup pad still includes first turn-ups and second turn-ups, first turn-ups connect in the lower extreme of supporting part with back floor longeron links to each other, at least one side of supporting part is connected with the second turn-ups, just the second turn-ups with the connecting plate links to each other.

According to the utility model discloses back floor assembly of some embodiments still includes: the mounting structure is mounted on the rear floor longitudinal beam, and at least part of the mounting structure extends into the mounting space to abut against the support plate; the rear auxiliary frame mounting position structure is arranged in a first mounting hole of the connecting plate, a second mounting hole is formed in the supporting plate, the mounting structure faces towards one end of the supporting plate, a threaded hole is formed in one end of the supporting plate, and the first mounting hole and the second mounting hole are both right opposite to the threaded hole so as to be used for penetrating through a connecting piece connected with the rear auxiliary frame.

According to the utility model discloses back floor assembly of some embodiments, back floor longeron includes: the longitudinal beam comprises a longitudinal beam main body, a longitudinal beam inner plate and a middle cover plate, wherein the longitudinal beam inner plate is arranged at the bottom of the longitudinal beam main body, the middle cover plate is connected between the longitudinal beam main body and the longitudinal beam inner plate so as to jointly limit an installation cavity, an installation structure is arranged in the installation cavity, and at least part of the installation structure penetrates through the longitudinal beam main body to extend into the installation space and is abutted against the supporting plate.

According to the utility model discloses back floor assembly of some embodiments, mounting structure includes nut reinforcing plate and nut pipe, the nut reinforcing plate install in the installation intracavity and with well apron links to each other, the nut pipe with the nut reinforcing plate links to each other, the nut pipe runs through the longeron main part with the supporting part links to each other, just the upper end opening of nut pipe is formed with the screw hole.

According to the utility model discloses back floor assembly of some embodiments, the nut reinforcing plate is equipped with the support turn-ups, support the turn-ups with longeron main part welding links to each other.

According to the utility model discloses back floor assembly of some embodiments still includes: the cross beam reinforcing plate is arranged at the joint of the rear floor cross beam and the inner end of the connecting plate, and the cross beam reinforcing plate is respectively connected with the rear floor cross beam and the inner end of the connecting plate in a welding mode.

According to the utility model discloses rear floor assembly of some embodiments, the rear floor crossbeam with the inner of connecting plate is formed with open mounting groove, the crossbeam reinforcing plate structure is the trough-like structure and the laminating is fixed in the inner wall of mounting groove.

The utility model also provides a vehicle.

According to the utility model discloses the vehicle, include any one above-mentioned embodiment back floor assembly.

The vehicle and the rear floor assembly have the same advantages compared with the prior art, and the detailed description is omitted.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic illustration of a rear floor assembly according to some embodiments of the present invention;

FIG. 2 is a schematic view of the rear floor assembly shown in FIG. 1 concealing a rear floor panel;

FIG. 3 is an enlarged view at A in FIG. 1;

FIG. 4 is a schematic view of the rear floor assembly shown in FIG. 1 concealing the rear floor cross member and connecting plate;

FIG. 5 is a schematic view of the rear floor assembly shown in FIG. 2 concealing the body of the stringer;

FIG. 6 is a schematic view of the rear floor assembly shown in FIG. 5 concealing the rear floor cross members and connecting plates;

FIG. 7 is an enlarged view at B in FIG. 5;

fig. 8 is a schematic illustration of a vehicle according to some embodiments of the present invention.

Reference numerals:

in the case of the vehicle 1000, the vehicle,

the rear floor assembly 100 is provided with a rear floor,

the rear floor cross member 10 is provided with,

a rear floor longitudinal beam 20, a longitudinal beam main body 21, a longitudinal beam inner plate 22, a middle cover plate 23, an installation cavity 24,

a connecting plate 30, a first mounting hole 301, a rear subframe mounting position 31,

the support plate 40, the second mounting hole 401,

the support portion 41, the connecting portion 42, the first flange 43, the second flange 44,

the mounting structure 50, the nut reinforcing plate 51, the support flange 511, the nut tube 52,

the cross-member reinforcing plate 60 is provided,

a rear floor panel 70.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

A rear floor assembly 100 according to an embodiment of the present invention is described below with reference to fig. 1-8.

If not specifically stated, the front-rear direction in the present invention is the longitudinal direction of the vehicle 1000, i.e., the X direction; the left-right direction is the lateral direction of the vehicle 1000, i.e., the Y direction; the up-down direction is the vertical direction of the vehicle 1000, i.e., the Z direction.

As shown in fig. 1 and 2, a rear floor assembly 100 according to an embodiment of the present invention includes: rear floor cross member 10, rear floor longitudinal member 20, connecting plate 30 and support plate 40.

Specifically, the inner end of the connecting plate 30 is connected with the rear floor cross beam 10, the outer end of the connecting plate 30 is overlapped above the rear floor longitudinal beam 20, the outer end of the connecting plate 30 and the rear floor longitudinal beam 20 define an installation space, the outer end of the connecting plate 30 is provided with a rear sub-frame installation position 31, and the support plate 40 is located in the installation space and supported between the connecting plate 30 and the rear floor longitudinal beam 20.

Note that, the inner end and the outer end of the connecting plate 30 are opposite ends of the connecting plate 30 in the left-right direction of the vehicle 1000, wherein the inner end of the connecting plate 30 refers to one end of the connecting plate 30 facing the vehicle inside, and the outer end of the connecting plate 30 refers to one end of the connecting plate 30 facing the vehicle outside, as shown in fig. 1.

Thus, the connection between the rear floor cross member 10 and the rear floor longitudinal member 20 can be achieved by the connecting plate 30, and the rear subframe mounting position 31 is located at the outer end of the connecting plate 30, that is, the projection of the rear subframe mounting position 31 in the up-down direction falls on the rear floor longitudinal member 20, so that the rear subframe mounting position 31 can raise the rigidity of itself by means of the rear floor longitudinal member 20 when the rear subframe is mounted on the rear floor assembly 100.

Further, the outer end of connecting plate 30 laps in the top of back floor longitudinal beam 20 and defines the installation space with back floor longitudinal beam 20, backup pad 40 is located the installation space and supports between connecting plate 30 and back floor longitudinal beam 20, and like this, make backup pad 40 can play the effect of supporting to connecting plate 30 in the up-down direction, in order to strengthen the structural stability of connecting plate 30, and simultaneously, the position that sets up of backup pad 40 is close to back sub vehicle frame installation position 31, so that promote the dynamic stiffness of back sub vehicle frame installation position 31 department through backup pad 40, reduce the vibration that transmits to the automobile body, do benefit to the NVH performance that improves vehicle 1000, and in order to fully utilize the space between connecting plate 30 and the back floor longitudinal beam 20.

The connection between the connecting plate 30 and the rear floor cross beam 10 and the connection between the connecting plate 40 and the rear floor longitudinal beam 20 are all welded, and the connection between the connecting plate 30 and the connection between the supporting plate 40 and the rear floor longitudinal beam 20 are all welded, but of course, other connection methods are also possible, and are not limited herein.

For example, as shown in fig. 1, the rear floor frames 20 are provided in two, the rear floor cross member 10 is provided in one, and both the two rear floor frames 20 and the one rear floor cross member 10 are mounted on the rear floor panel 70, and as shown in fig. 2, the connecting plates 30 are also provided in two, each connecting plate 30 is connected between the laterally outer end of the rear floor cross member 10 and the rear floor cross member 20, and the outer end of the connecting plate 30 is overlapped above the rear floor cross member 20 and defines a mounting space with the rear floor cross member 20.

Wherein the width of the connecting plate 30 is gradually increased in a direction from the inner end of the connecting plate 30 to the outer end of the connecting plate 30, and the rear sub frame mounting position 31 is located at the maximum width of the connecting plate 30, so that the dynamic stiffness at the rear sub frame mounting position 31 can be effectively improved.

Therefore, the connection between the rear floor cross beam 10 and the rear floor longitudinal beam 20 can be realized through the connecting plate 30, the rigidity of the rear sub frame mounting position 31 can be improved by means of the rear floor longitudinal beam 20, and meanwhile, the supporting plate 40 can support the connecting plate 30 in the up-down direction, so that the dynamic rigidity of the rear sub frame mounting position 31 can be improved through the supporting plate 40, and the vibration transmitted to a vehicle body is reduced.

According to the utility model discloses back floor assembly 100, back floor crossbeam 10 and back floor longeron 20 pass through the connecting plate 30 and connect thereafter, be convenient for strengthen whole frame's rigidity, back sub vehicle frame installation position 31 sets up in the outer end of connecting plate 30, and backup pad 40 supports between connecting plate 30 and back floor longeron 20, and thus, can play the effect of support to connecting plate 30 through setting up backup pad 40, thereby promote the dynamic stiffness of back sub vehicle frame installation position 31 department effectively, thereby improve the vibration isolation performance of back sub vehicle frame installation position 31 department, do benefit to the NVH performance that improves vehicle 1000.

In some embodiments, as shown in fig. 3, the support plate 40 includes a support portion 41 and a connection portion 42, the support portion 41 is supported between the outer end of the connection plate 30 and the rear floor rail 20 to close the opening of the installation space, the connection portion 42 is bent to be connected to the support portion 41, and the connection portion 42 is connected to the lower surface of the connection plate 30.

From this, can seal the open mouth of installation space through supporting part 41 to form complete spatial structure, make the distribution of the design rigidity of back floor assembly 100 more reasonable, and connecting portion 42 is buckled with supporting part 41 and is linked to each other, and is linked to each other with the lower surface welding of connecting plate 30, like this, can increase the area of contact of backup pad 40 with connecting plate 30, thereby improve the stability of being connected of backup pad 40 and connecting plate 30, reinforcing backup pad 40 is to the supporting effect of connecting plate 30.

For example, the two ends of the supporting portion 41 in the vertical direction are respectively connected with the outer end of the connecting plate 30 and the rear floor longitudinal beam 20 in a welding manner, the connecting portion 42 is located at the upper end of the supporting portion 41, and the connecting portion 42 and the connecting plate 30 are designed to follow the shape, so that the connecting portion 42 can be better welded with the connecting plate 30 in the vertical direction in an attaching manner, and the supporting effect of the supporting plate 40 on the connecting plate 30 is enhanced.

Further, as shown in fig. 3, the support plate 40 further includes a first flange 43 and a second flange 44, the first flange 43 is connected to the lower end of the support portion 41 to be connected to the rear floor rail 20, the second flange 44 is connected to at least one side of the support portion 41, and the second flange 44 is connected to the connecting plate 30.

From this, through setting up first turn-ups 43, can increase the area of contact of backup pad 40 and back floor longitudinal beam 20 to improve the stability of being connected of backup pad 40 and back floor longitudinal beam 20, and through setting up second turn-ups 44, can further increase the area of contact of backup pad 40 and connecting plate 30, thereby improve the stability of being connected of backup pad 40 and connecting plate 30, strengthen the supporting effect of backup pad 40 to connecting plate 30.

For example, the first flange 43 extends toward the vehicle outer side at the lower end of the support portion 41 so that the first flange 43 can be better butt-welded to the rear floor side member 20 in the up-down direction, and the second flange 44 is provided at the side of the support portion 41 and extends toward the vehicle inner side so that the second flange 44 can be butt-welded to the connecting plate 30 in the front-rear direction. In this way, the structural stability of the support plate 40 can be enhanced.

In some embodiments, as shown in fig. 1, the rear floor assembly 100 further comprises: a mounting structure 50.

The mounting structure 50 is mounted to the rear floor rail 20 with at least a portion of the mounting structure 50 extending into the mounting space to abut the support plate 40 to facilitate enhancing the structural stability of the mounting structure 50.

As shown in fig. 1 and 2, the rear subframe mounting location 31 is configured to be disposed in a first mounting hole 301 of the connecting plate 30, as shown in fig. 3, the supporting plate 40 is provided with a second mounting hole 401, one end of the mounting structure 50 facing the supporting plate 40 is provided with a threaded hole, and the first mounting hole 301 and the second mounting hole 401 are opposite to the threaded hole for inserting a connecting member connected to the rear subframe.

Thus, by providing the mounting structure 50, the connector can be inserted through the first mounting hole 301 and the second mounting hole 401 in order to be screwed into the threaded hole of the mounting structure 50, thereby fixedly mounting the rear subframe to the rear floor assembly 100.

Further, as shown in fig. 4, the rear floor side member 20 includes: a side member main body 21, a side member inner panel 22, and a center cover panel 23.

The longitudinal beam inner plate 22 is installed at the bottom of the longitudinal beam main body 21, the middle cover plate 23 is connected between the longitudinal beam main body 21 and the longitudinal beam inner plate 22 to jointly define an installation cavity 24, the installation structure 50 is installed in the installation cavity 24, and at least part of the installation structure 50 penetrates through the longitudinal beam main body 21 to extend into the installation space to abut against the support plate 40.

From this, through installing mounting structure 50 in installation cavity 24, in order to make full use of the space in the installation cavity 24 of back floor longeron 20, and mounting structure 50 at least part runs through longeron main part 21, in order to offset with backup pad 40 in mounting structure 50 at least part extends the installation space, thereby guarantee that mounting structure 50's screw hole can with first mounting hole 301, second mounting hole 401 is just right, and then the connecting piece of being convenient for can run through first mounting hole 301 in proper order, second mounting hole 401 is with the screw hole screw-thread fit with mounting structure 50, in order to realize that the installation of back sub vehicle frame is fixed.

In some embodiments, as shown in fig. 3 and 7, the mounting structure 50 includes a nut stiffener plate 51 and a nut tube 52.

The nut reinforcing plate 51 is installed in the installation cavity 24 and connected to the middle cover plate 23, the nut pipe 52 is connected to the nut reinforcing plate 51, the nut pipe 52 penetrates through the side member main body 21 to be connected to the support portion 41, and a threaded hole is formed in an upper end opening of the nut pipe 52.

From this, can weld nut reinforcing plate 51 laminating on well apron 23 to reinforcing nut reinforcing plate 51's structural stability, and nut reinforcing plate 51 can play fixed effect to nut pipe 52, and nut pipe 52 wears to locate longeron main part 21, so that nut pipe 52's upper end can extend in the installation space in order to link to each other with the supporting part 41 welding of backup pad 40, and is formed with the cavity in the nut pipe 52, and the upper end opening of cavity is formed with the screw hole. Like this, can make the screw hole just right with first mounting hole 301, second mounting hole 401, and then the connecting piece of being convenient for can run through first mounting hole 301, second mounting hole 401 in proper order with the screw hole screw-thread fit of mounting structure 50 to the installation of realization back sub vehicle frame is fixed.

Wherein, nut pipe 52 links to each other for the welding with nut reinforcing plate 51, and preferably, the lower extreme of nut pipe 52 is equipped with the welded plate, and the welded plate links to each other with nut reinforcing plate 51 welding on horizontal, and nut reinforcing plate 51 is equipped with two bulge parts, and nut pipe 52 is located between two bulge parts, and two bulge parts respectively with nut pipe 52 periphery wall welding in the upper and lower direction link to each other, like this, locate to link to each other nut pipe 52 with nut reinforcing plate 51 welding in a plurality of positions, can strengthen nut pipe 52 and nut reinforcing plate 51's welding stability.

As shown in fig. 1, 5 to 7, the nut reinforcement plate 51 is provided with a support flange 511, and the support flange 511 is connected to the side member main body 21 by welding.

From this, through setting up support turn-ups 511 to support turn-ups 511 and longeron main part 21 and laminate the welding in the left and right direction, and then play the effect of support to longeron main part 21 in the left and right direction through supporting turn-ups 511, so that strengthen longeron main part 21's structural stability.

In some embodiments, as shown in fig. 1, the rear floor assembly 100 further comprises: the beam reinforcement plate 60.

The beam reinforcing plate 60 is installed at the connection of the inner ends of the rear floor beam 10 and the connecting plate 30, and the beam reinforcing plate 60 is welded to the inner ends of the rear floor beam 10 and the connecting plate 30, respectively.

Thus, by providing the cross member reinforcing plate 60, the connection stability of the inner ends of the rear floor cross member 10 and the connecting plate 30 can be enhanced, the dynamic stiffness of the joint between the inner ends of the rear floor cross member 10 and the connecting plate 30 can be enhanced, and the dynamic stiffness of the rear subframe mounting position 31 can be indirectly enhanced.

For example, the cross member reinforcing plate 60 is overlapped on the side of the joint of the inner ends of the rear floor cross member 10 and the connecting plate 30 facing the rear floor panel 70, so that the cross member reinforcing plate 60 is not directly visible on the outer side, and the cross member reinforcing plate 60 is welded to the inner ends of the rear floor cross member 10 and the connecting plate 30, respectively, so that the dynamic stiffness of the joint of the inner ends of the rear floor cross member 10 and the connecting plate 30 can be enhanced, thereby enhancing the structural strength of the entire frame.

Further, the inner ends of the rear floor cross member 10 and the connecting plate 30 are formed with open mounting grooves, and the cross member reinforcing plate 60 is constructed in a groove-like structure and is attached to the inner walls of the mounting grooves.

Therefore, the structural stability of the cross beam reinforcing plate 60 can be enhanced, the dynamic stiffness of the joint between the rear floor cross beam 10 and the inner end of the connecting plate 30 can be enhanced, and the structural strength of the whole frame can be enhanced.

For example, the mounting groove is open toward the rear floor panel 70, and the beam reinforcing plate 60 is attached to the inner wall fixed to the mounting groove, wherein the beam reinforcing plate 60 may be formed from one plate, and the one plate may have three hems, which are self-welded to form a groove-like structure, so that the difficulty of forming the beam reinforcing plate 60 is reduced, and the reduction of the production cost is facilitated.

The utility model also provides a vehicle 1000.

As shown in fig. 8, a vehicle 1000 according to an embodiment of the present invention includes the rear floor assembly 100 of any of the above embodiments.

According to the utility model discloses vehicle 1000, rear floor crossbeam 10 and rear floor longeron 20 of rear floor assembly 100 pass through the connecting plate 30 to be connected, be convenient for strengthen whole frame's rigidity, rear sub vehicle frame installation position 31 sets up in the outer end of connecting plate 30, and backup pad 40 supports between connecting plate 30 and rear floor longeron 20, thus, can play the effect of support to connecting plate 30 through setting up backup pad 40, thereby promote the dynamic stiffness of rear sub vehicle frame installation position 31 department effectively, thereby improve the vibration isolation performance of rear sub vehicle frame installation position 31 department, do benefit to the NVH performance that improves vehicle 1000.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do 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 thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rear floor assembly, comprising:

a rear floor cross beam and a rear floor longitudinal beam;

the inner end of the connecting plate is connected with the rear floor cross beam, the outer end of the connecting plate is lapped above the rear floor longitudinal beam, an installation space is defined by the outer end of the connecting plate and the rear floor longitudinal beam, and a rear auxiliary frame installation position is arranged at the outer end of the connecting plate;

the supporting plate is located in the installation space and supported between the connecting plate and the rear floor longitudinal beam.

2. The rear floor assembly according to claim 1, wherein the support plate includes a support portion supported between the outer end of the connection plate and the rear floor rail to close the opening of the installation space, and a connection portion bent to be connected to the support portion and connected to a lower surface of the connection plate.

3. The rear floor assembly of claim 2, wherein the support plate further includes a first flange and a second flange, the first flange is connected to a lower end of the support portion to connect to the rear floor rail, the second flange is connected to at least one side of the support portion, and the second flange is connected to the connecting plate.

4. The rear floor assembly of claim 2, further comprising: the mounting structure is mounted on the rear floor longitudinal beam, and at least part of the mounting structure extends into the mounting space to abut against the support plate;

the rear auxiliary frame mounting position structure is arranged in a first mounting hole of the connecting plate, a second mounting hole is formed in the supporting plate, the mounting structure faces towards one end of the supporting plate, a threaded hole is formed in one end of the supporting plate, and the first mounting hole and the second mounting hole are both right opposite to the threaded hole so as to be used for penetrating through a connecting piece connected with the rear auxiliary frame.

5. The rear floor assembly of claim 4, wherein the rear floor rail comprises: the longitudinal beam comprises a longitudinal beam main body, a longitudinal beam inner plate and a middle cover plate, wherein the longitudinal beam inner plate is arranged at the bottom of the longitudinal beam main body, the middle cover plate is connected between the longitudinal beam main body and the longitudinal beam inner plate so as to jointly limit an installation cavity, an installation structure is arranged in the installation cavity, and at least part of the installation structure penetrates through the longitudinal beam main body to extend into the installation space and is abutted against the supporting plate.

6. The rear floor assembly according to claim 5, wherein the mounting structure includes a nut reinforcement plate mounted in the mounting cavity and connected to the middle cover plate, and a nut tube connected to the nut reinforcement plate, the nut tube penetrating the stringer main body to be connected to the support portion, and an upper end opening of the nut tube being formed with the screw hole.

7. The rear floor assembly of claim 6, wherein the nut stiffener is provided with a support flange, and the support flange is welded to the stringer body.

8. The rear floor assembly of claim 1, further comprising: the cross beam reinforcing plate is arranged at the joint of the rear floor cross beam and the inner end of the connecting plate, and the cross beam reinforcing plate is respectively connected with the rear floor cross beam and the inner end of the connecting plate in a welding mode.

9. The rear floor assembly as claimed in claim 8, wherein the rear floor cross member and the inner end of the connecting plate are formed with an open mounting groove, and the cross member reinforcing plate is constructed in a groove-like structure and is fittingly fixed to an inner wall of the mounting groove.

10. A vehicle, characterized by comprising: the rear floor assembly of any of claims 1-9.