Rear floor assembly and vehicle

Abstract

The utility model discloses a rear floor assembly and a vehicle. The rear floor assembly comprises a rear floor longitudinal beam, a rear floor longitudinal beam and a rear floor longitudinal beam, wherein the rear floor longitudinal beam is formed by die casting and is bent in the height direction; the cross beam assembly is fixedly connected between the two rear floor longitudinal beams and comprises a cross beam which is arranged in the length direction of the vehicle body and is of an extruded aluminum profile structure; a force transmission rib is arranged on the side, close to the cross beam assembly, of the rear floor longitudinal beam in the width direction, and the force transmission direction of the force transmission rib extends from the first end to the second end. The panel assembly comprises at least two panels distributed in the length direction of the vehicle body, and the adjacent panels are connected through cross beams. The weight of the rear floor can be reduced while the supporting strength of the rear floor can be ensured by changing the materials of the longitudinal beams and the cross beams of the rear floor; the force transmission rib is arranged on the side, close to the cross beam, of the rear floor longitudinal beam, so that the pressure, borne by the first end of the rear floor longitudinal beam, of the cross beam is guided by the force transmission rib to be transmitted to the second end of the rear floor longitudinal beam, stress is dispersed, and the bearing capacity of the rear floor longitudinal beam is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle floors, in particular to a rear floor assembly and a vehicle. Background Art

[0002] With the development of new energy vehicles, platformization, as a future industry trend, has higher and higher requirements for car bodies. With the development of steel-aluminum hybrid welded car bodies, the use of aluminum alloy instead of steel in the white body can greatly reduce its own weight, thereby reducing battery usage. The demand for lightweight aluminum alloy integrated parts in the new energy vehicle field is constantly expanding. Combined with the development of body materials, aluminum parts are gradually used in body structures.

[0003] The floor of the vehicle is along the length of the vehicle body, and generally includes a front floor and a rear floor, which are connected to form the floor foundation of the entire vehicle.

[0004] Due to the addition of a battery system in electric vehicles, the weight of the entire vehicle has increased significantly compared to traditional fuel vehicles. Therefore, the load borne by the vehicle body is getting heavier and heavier, and the requirements for the vehicle structure are also getting higher and higher.

[0005] Therefore, how to provide a rear floor assembly of a vehicle and improve the supporting strength is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0006] In view of this, the utility model provides a rear floor assembly of a vehicle, which improves the supporting strength. In addition, the utility model also provides a vehicle having the rear floor assembly.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A rear floor assembly comprising:

[0009] A rear floor longitudinal beam, one end of which is used to connect to the front floor longitudinal beam, and the other end of which is used to connect to the rear anti-collision beam. There are two rear floor longitudinal beams, which are arranged along the width direction of the vehicle body. The rear floor longitudinal beam is a die-casting structure bent along the height direction.

[0010] A crossbeam assembly, the crossbeam assembly is fixedly connected between the two rear floor longitudinal beams, the crossbeam assembly includes a crossbeam arranged along the length direction of the vehicle body and having an extruded aluminum profile structure; a force transmission rib is provided on one side of the rear floor longitudinal beam close to the crossbeam assembly in the width direction, the force transmission direction of the force transmission rib is extended from the first end to the second end, and the first end of the rear floor longitudinal beam is one end in the height direction for connecting the crossbeam assembly, and the second end is the other end of the rear floor longitudinal beam in the height direction;

[0011] The panel assembly comprises at least two panels arranged along the length direction of the vehicle body, and adjacent panels are connected by the cross beam.

[0012] Preferably, in the above-mentioned rear floor assembly, one end of the rear floor longitudinal beam is connected to the front floor longitudinal beam through a rear section of a door sill beam.

[0013] Preferably, in the above-mentioned rear floor assembly, the other end of the rear floor longitudinal beam is connected to the rear anti-collision beam through a rear section of the rear floor longitudinal beam, and the rear section of the rear floor longitudinal beam is an extruded aluminum structural member.

[0014] Preferably, in the above-mentioned rear floor assembly, the rear section of the rear floor longitudinal beam is plug-connected to the rear floor longitudinal beam and is connected and fixed by flow drill screws.

[0015] Preferably, in the above-mentioned rear floor assembly, the side of the rear floor longitudinal beam close to the cross beam assembly has a flange, and the cross beam assembly is connected to the flange by flow drill screw connection, self-piercing riveting or pull riveting process;

[0016] and / or,

[0017] The panel assembly is connected to the flange by flow drill screw connection, self-piercing riveting or pull riveting process.

[0018] Preferably, in the above-mentioned rear floor assembly, the flange has a U-shaped structure, the crossbeam is overlapped on the U-shaped structure, and the crossbeam is fixed at the U-shaped structure.

[0019] Preferably, in the above-mentioned rear floor assembly, the U-shaped structure includes a U-shaped groove and a U-shaped boss;

[0020] The cross beam comprises a middle cross beam and a rear cross beam arranged in sequence along the length direction of the vehicle body, the middle cross beam has a first U-shaped overlapping surface matched with the U-shaped boss, and the first U-shaped overlapping surface is connected to both the flange and the U-shaped boss;

[0021] The rear cross beam has a second U-shaped overlapping surface matched with the U-shaped groove, and the second U-shaped overlapping surface is connected to both the flange and the inner wall of the U-shaped groove.

[0022] Preferably, in the above-mentioned rear floor assembly, a reinforcing rib group is provided on the side of the rear floor longitudinal beam away from the cross beam assembly in the width direction of the vehicle body, and the reinforcing rib group includes a first reinforcing rib and a second reinforcing rib intersecting at a middle position, and the first reinforcing rib and the second reinforcing rib are both arranged obliquely in the height direction of the vehicle body.

[0023] Preferably, in the above-mentioned rear floor assembly, a sub-frame front mounting point and a sub-frame rear mounting point are die-cast on the rear floor longitudinal beam, and a shock-absorbing spring mounting point and a shock absorber mounting point are integrated.

[0024] A vehicle comprises a rear floor assembly, wherein the rear floor assembly is any one of the rear floor assemblies described above.

[0025] The utility model discloses a rear floor assembly of a vehicle, wherein the rear floor longitudinal beam is an aluminum alloy die-casting, and the cross beam of the cross beam assembly is an extruded aluminum profile structural member. By changing the materials of the rear floor longitudinal beam and the cross beam, the supporting strength of the rear floor can be ensured while reducing the weight of the rear floor; force transmission ribs are arranged on one side of the rear floor longitudinal beam close to the cross beam, so as to transmit the pressure of the cross beam received by the first end of the rear floor longitudinal beam to the second end of the rear floor longitudinal beam through the guidance of the force transmission ribs, thereby dispersing the force and improving the bearing capacity of the rear floor longitudinal beam, that is, improving the supporting strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a top view of the rear floor assembly disclosed in the embodiment of the utility model;

[0028] Figure 2 It is a schematic diagram of the first direction structure of the rear floor assembly disclosed in the embodiment of the utility model;

[0029] Figure 3 It is a schematic diagram of the second direction structure of the rear floor assembly disclosed in the embodiment of the utility model;

[0030] Figure 4 It is a third-direction structural schematic diagram of the rear floor assembly disclosed in the embodiment of the utility model;

[0031] Figure 5 It is a bottom view of the rear floor assembly disclosed in the embodiment of the utility model;

[0032] Figure 6 It is a schematic diagram of the structure of the rear floor assembly in the fourth direction disclosed in the embodiment of the utility model;

[0033] Figure 7 It is a schematic structural diagram of the connection between the rear floor longitudinal beam and the middle cross beam of the rear floor assembly disclosed in the embodiment of the utility model;

[0034] Figure 8 It is a back view of the rear floor longitudinal beam disclosed in the embodiment of the utility model. DETAILED DESCRIPTION

[0035] The utility model discloses a rear floor assembly of a vehicle, which improves the supporting strength. In addition, the utility model also discloses a vehicle with the rear floor assembly.

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0038] like Figures 1 to 6 As shown, the present application discloses a rear floor assembly of a vehicle, comprising: a rear floor longitudinal beam 4, a cross beam assembly and a panel assembly.

[0039] One end of the rear floor longitudinal beam 4 is used to connect with the front floor longitudinal beam (not shown in the figure), and the other end is used to connect with the rear anti-collision beam. There are two rear floor longitudinal beams 4, which are arranged along the width direction of the vehicle body; wherein the rear floor longitudinal beam 4 is a die-casting structure member bent along the height direction. In some embodiments, the rear floor longitudinal beam 4 is an aluminum alloy die-casting.

[0040] The crossbeam assembly is fixedly connected between the two rear floor longitudinal beams 4, and the crossbeam assembly includes a crossbeam arranged along the length direction of the vehicle body and having an extruded aluminum profile structure; a force transmission rib 41 is provided on one side of the rear floor longitudinal beam 4 close to the crossbeam assembly along the width direction, and the force transmission direction of the force transmission rib 41 extends from the first end to the second end, and the first end of the rear floor longitudinal beam 4 is one end in the height direction for connecting the crossbeam assembly, and the second end is the other end of the rear floor longitudinal beam 4 in the height direction.

[0041] The panel assembly includes at least two panels arranged along the length direction of the vehicle body, and adjacent panels are connected by a cross beam.

[0042] The rear floor longitudinal beam 4 in the present application is an aluminum alloy die-casting, and the crossbeam of the crossbeam assembly is an extruded aluminum profile structural member. By changing the materials of the rear floor longitudinal beam 4 and the crossbeam, the supporting strength of the rear floor can be ensured while reducing the weight of the rear floor; a force transmission rib 41 is provided on the side of the rear floor longitudinal beam 4 close to the crossbeam, so as to guide the force transmission rib 41 to transfer the pressure of the crossbeam received by the first end of the rear floor longitudinal beam 4 to the second end of the rear floor longitudinal beam 4, thereby dispersing the force and improving the bearing capacity of the rear floor longitudinal beam 4.

[0043] Combination Figure 1 and Figure 2 The rear floor assembly shown also includes a rocker beam rear section 1, a rear floor longitudinal beam rear section 9 and a wheel arch inner panel 5; the cross beam assembly includes a front cross beam assembly 2, a middle cross beam 6 and a rear cross beam 8; and the panel assembly includes a middle floor panel 3 and a rear floor panel 7.

[0044] Among them, along the length direction of the vehicle body, that is, the extension direction from the front floor to the rear floor, the front cross beam assembly 2, the middle floor panel 3, the middle cross beam 6, the rear floor panel 7 and the rear cross beam 8 are connected in sequence.

[0045] One end of the rear floor longitudinal beam 4 is connected to the rear section 1 of the door sill beam, and the other end is connected to the rear section 9 of the rear floor longitudinal beam.

[0046] The rear floor longitudinal member 4, the rear section of the rear floor longitudinal member 9 and the wheel house inner panel 5 are arranged on both sides of the cross member.

[0047] Specifically, one end of the rocker beam rear section 1 is connected to one end of the rear floor longitudinal beam 4, and the other end is used to connect the front floor longitudinal beam, so as to realize the connection between the front floor longitudinal beam and the rear floor longitudinal beam 4 of the vehicle floor. The connection protection of the rocker beam rear section 1 and the rear floor longitudinal beam 4 and the front floor longitudinal beam is not limited to welding.

[0048] The structure of the rear section 1 of the threshold beam can be set according to different needs and is within the protection range.

[0049] See also Figure 2 As shown, the front cross beam assembly 2 includes: a front cross beam 21 and a cross beam reinforcement plate 22. The front cross beam 21 and the cross beam reinforcement plate 22 are arranged along the thickness direction of the rear floor assembly of the vehicle, and a receiving cavity is formed between the two, which ensures the strength of the front cross beam while reducing the weight.

[0050] In some embodiments, the front cross beam 21 is a steel or aluminum stamping part, and the cross beam reinforcement plate 22 includes but is not limited to a sheet metal part.

[0051] Along the length direction of the vehicle body, that is, the extending direction from the front floor to the rear floor, one side of the middle floor panel 3 is connected to the front cross beam assembly 2 , and the other side is connected to the middle cross beam 6 .

[0052] The shape and size of the middle floor panel 3 can be set according to the requirements of the floor of the vehicle. In some embodiments, the middle floor panel 3 includes but is not limited to a sheet metal part.

[0053] In some embodiments, the middle cross beam 6 is a three-dimensional structure, and the height difference of the middle cross beam 6 along the height direction can be set according to different needs, which is not specifically limited here. The shape and size of the middle cross beam 6 can be set according to different needs and are all within the protection range.

[0054] The shape and size of the rear floor panel 7 can be set according to different needs, and one side of the rear floor panel 7 is connected to the side of the middle cross beam 6 away from the middle floor panel 3 .

[0055] The rear floor panel 7 is a three-dimensional structure, that is, the rear floor panel 7 is bent in height, and the rear cross beam 8 is connected to the middle position of the rear floor panel 7. The rear floor panel 7 can be connected in two sections, and the two sections are connected by the rear cross beam 8 to improve the strength of the rear floor panel 7.

[0056] In some embodiments, the rear floor panel 7 includes but is not limited to being a sheet metal member.

[0057] The shape, size and arrangement position of the rear cross beam 8 can be set according to different needs and are all within the protection range.

[0058] The connection methods of the front cross beam assembly 2 and the middle floor panel 3, the middle floor panel 3 and the middle cross beam 6, the middle cross beam 6 and the rear floor panel 7, and the rear floor panel 7 and the rear cross beam 8 include but are not limited to screw connection.

[0059] Along the width direction of the vehicle body, a rear floor longitudinal beam 4 is connected to both sides of the front cross beam assembly 2, the middle floor panel 3, the middle cross beam 6, the rear floor panel 7 and the rear cross beam 8, respectively.

[0060] In some embodiments, the rear floor longitudinal beam 4 is a die-casting part using a die-casting process, and the die-casting part can improve the rigidity of the vehicle body. The rear section 9 of the rear floor longitudinal beam is an extruded aluminum structural part, which can ensure rear impact energy absorption and achieve rear impact safety of the vehicle body.

[0061] Combination Figure 7 As shown, the rear floor longitudinal beam 4 and the rear floor longitudinal beam rear section 9 in the present application are connected by plug-in connection, that is, the rear floor longitudinal beam 4 has a cavity, the rear floor longitudinal beam rear section 9 is inserted into the cavity of the rear floor longitudinal beam 4, and connected by flow drill screws (Flow Drill Screw, referred to as FDS).

[0062] The rear floor longitudinal beam 4 disclosed in the present application is a die-casting part, and during the die-casting process, a sub-frame front mounting point, a sub-frame rear mounting point, and a shock-absorbing spring mounting point and a shock absorber mounting point are die-cast on the rear floor longitudinal beam 4 to improve the rigidity of the mounting points.

[0063] The die-casting process can avoid problems such as large height differences at the rear subframe mounting points and shock absorber spring mounting points, which make sheet metal difficult to form, due to layout factors.

[0064] It should be noted that the positions and shapes of the front mounting point of the subframe, the rear mounting point of the subframe, the shock absorbing spring mounting point and the shock absorber mounting point can be set according to different needs and are all within the protection range.

[0065] Combination Figure 7 In the illustrated embodiment, the connection methods of the middle cross beam 6 and the rear cross beam 8 to the rear floor longitudinal beam 4 include but are not limited to FDS, self-piercing riveting (SPR) or riveting process.

[0066] It should be noted that flow drill screw connection is also called self-tapping screw connection or hot-melt self-tapping connection.

[0067] The connection methods of the rear floor longitudinal beam 4 with the middle floor panel 3, the front cross beam assembly 2, and the wheel house inner panel 5 include but are not limited to connection by FDS, SPR or riveting process.

[0068] The wheel house inner panel 5 is provided to cover the wheel position, and the shape and size of the wheel house inner panel 5 are not particularly limited.

[0069] like Figure 7 As shown, the rear floor longitudinal beam 4 is provided with force transmission ribs 41 and flanges 42 .

[0070] The force transmission rib 41 is a sheet metal part that tapers from the first end to the second end of the rear floor longitudinal beam 4. The number of force transmission ribs 41 can be set according to different needs. Optionally, there are multiple force transmission ribs 41, and the length of the force transmission ribs 41 gradually increases from the force transmission ribs in the middle position to the force transmission ribs 41 at the two side positions.

[0071] The flange 42 is located on one side of the first end of the rear floor longitudinal beam 4 close to the cross beam, and the shape and size of the flange 42 can be set according to the direction of the rear floor longitudinal beam 4 and the structure of the installed panel and cross beam, which is not specifically limited here.

[0072] It should be noted that the above-mentioned panels and beams are all installed on the flanges 42 .

[0073] In some embodiments, in order to ensure the stability of the installation of the crossbeam, a U-shaped structure is provided on the flange 42, the crossbeam is overlapped with the U-shaped structure, and the crossbeam is fixed at the U-shaped structure.

[0074] In the present application, a U-shaped structure is provided on the flange 42 so that the crossbeam has installation points at different heights in the height direction, thereby achieving multi-point installation of the crossbeam in the circumferential direction and achieving installation stability.

[0075] In some embodiments, the U-shaped structure includes a U-shaped groove 421 and a U-shaped boss.

[0076] The middle cross beam 6 has a first U-shaped overlapping surface that cooperates with the U-shaped boss, and the first U-shaped overlapping surface is connected to both the flange 42 and the U-shaped boss; the rear cross beam 8 has a second U-shaped overlapping surface that cooperates with the U-shaped groove 421, and the second U-shaped overlapping surface is connected to both the flange 42 and the inner wall of the U-shaped groove 421.

[0077] Two U-shaped structures are provided in the present application. In some embodiments, the U-shaped structure may also be a step structure, including but not limited to two steps, and the step surfaces at different heights of the beam are connected.

[0078] The type of U-shaped structure can be set according to the shape of the beam and is within the protection range.

[0079] like Figure 8 As shown, a reinforcing rib group 43 is provided on one side of the rear floor longitudinal beam 4 away from the cross beam assembly along the width direction of the vehicle body. The reinforcing rib group 43 includes a first reinforcing rib 431 , a second reinforcing rib 432 and a third reinforcing rib 433 .

[0080] The first reinforcing rib 431 and the second reinforcing rib 432 intersect at their middle positions and are arranged obliquely along the height direction of the vehicle body, so that the first reinforcing rib 431 and the second reinforcing rib 432 form an X-shaped structure. A plurality of first reinforcing ribs 431 and second reinforcing ribs 432 are arranged along the height direction, thereby forming a diamond structure in the height direction.

[0081] The third reinforcing ribs 433 are arranged along the height direction and are connected to the first reinforcing ribs 431 and / or the second reinforcing ribs 432 .

[0082] It should be noted that the shape of the reinforcing rib group 43 needs to be set according to the shape of the rear floor longitudinal beam 4 , including but not limited to a mode having half of the first reinforcing rib 431 and the second reinforcing rib 432 .

[0083] In addition, the present application also discloses a vehicle, including a rear floor assembly, wherein the rear floor assembly is the rear floor assembly disclosed in the above-mentioned embodiment. Therefore, the vehicle having the rear floor assembly also has all the above-mentioned technical effects, which will not be described one by one here.

[0084] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0085] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rear floor assembly, characterized in that: include: A rear floor longitudinal beam, one end of which is used to connect to the front floor longitudinal beam, and the other end of which is used to connect to the rear anti-collision beam. There are two rear floor longitudinal beams, which are arranged along the width direction of the vehicle body. The rear floor longitudinal beam is a die-casting structure bent along the height direction. A crossbeam assembly, the crossbeam assembly is fixedly connected between the two rear floor longitudinal beams, the crossbeam assembly includes a crossbeam arranged along the length direction of the vehicle body and having an extruded aluminum profile structure; a force transmission rib is provided on one side of the rear floor longitudinal beam close to the crossbeam assembly in the width direction, the force transmission direction of the force transmission rib is extended from the first end to the second end, and the first end of the rear floor longitudinal beam is one end in the height direction for connecting the crossbeam assembly, and the second end is the other end of the rear floor longitudinal beam in the height direction; The panel assembly comprises at least two panels arranged along the length direction of the vehicle body, and adjacent panels are connected by the cross beam.

2. The rear floor assembly according to claim 1, characterized in that: One end of the rear floor longitudinal beam is connected to the front floor longitudinal beam through a rear section of a door sill beam.

3. The rear floor assembly according to claim 1, characterized in that: The other end of the rear floor longitudinal beam is connected to the rear anti-collision beam through the rear section of the rear floor longitudinal beam, and the rear section of the rear floor longitudinal beam is an extruded aluminum structural member.

4. The rear floor assembly according to claim 3, characterized in that: The rear section of the rear floor longitudinal beam is plug-connected with the rear floor longitudinal beam and is connected and fixed by flow drill screws.

5. The rear floor assembly according to any one of claims 1 to 4, characterized in that: The rear floor longitudinal beam has a flange on one side close to the cross beam assembly, and the cross beam assembly is connected to the flange by flow drill screw connection, self-piercing riveting or pull riveting process; and / or, The panel assembly is connected to the flange by flow drill screw connection, self-piercing riveting or pull riveting process.

6. The rear floor assembly according to claim 5, characterized in that: The flange has a U-shaped structure, the crossbeam is overlapped with the U-shaped structure, and the crossbeam is fixed at the U-shaped structure.

7. The rear floor assembly according to claim 6, characterized in that: The U-shaped structure includes a U-shaped groove and a U-shaped boss; The cross beam comprises a middle cross beam and a rear cross beam arranged in sequence along the length direction of the vehicle body, the middle cross beam has a first U-shaped overlapping surface matched with the U-shaped boss, and the first U-shaped overlapping surface is connected to both the flange and the U-shaped boss; The rear cross beam has a second U-shaped overlapping surface matched with the U-shaped groove, and the second U-shaped overlapping surface is connected to both the flange and the inner wall of the U-shaped groove.

8. The rear floor assembly according to any one of claims 1 to 4, characterized in that: A reinforcing rib group is provided on one side of the rear floor longitudinal beam away from the cross beam assembly in the width direction of the vehicle body. The reinforcing rib group includes a first reinforcing rib and a second reinforcing rib intersecting at a middle position. The first reinforcing rib and the second reinforcing rib are both arranged obliquely in the height direction of the vehicle body.

9. The rear floor assembly according to any one of claims 1 to 4, characterized in that: The rear floor longitudinal beam is die-cast with a sub-frame front mounting point and a sub-frame rear mounting point, and is integrated with a shock absorbing spring mounting point and a shock absorber mounting point.

10. A vehicle comprising a rear floor assembly, characterized in that: The rear floor assembly is the rear floor assembly according to any one of claims 1 to 9.

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