Frame assembly and vehicle thereof

Abstract

The vehicle frame assembly comprises a first longitudinal beam, a second longitudinal beam and a cross beam, and the cross beam is connected between the first longitudinal beam and the second longitudinal beam; the frame assembly further comprises a range extender assembly and a suspension support assembly, the range extender assembly is located in the area below a front row seat of the vehicle and located between the first longitudinal beam and the second longitudinal beam, and the suspension support assembly comprises a first suspension support, a second suspension support and a third suspension support. The first suspension support is connected between the range extender assembly and the first longitudinal beam, the second suspension support is connected between the range extender assembly and the second longitudinal beam, and the third suspension support is connected between the range extender assembly and the cross beam. According to the frame assembly and the vehicle, the arrangement requirement of the range extender assembly is met, and meanwhile the installation stability of the range extender assembly is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a frame assembly and a vehicle thereof. Background Art

[0002] A range extender generally refers to an electric vehicle component that can provide additional electricity by generating power, thereby increasing the mileage of the electric vehicle. Extended-range hybrid vehicles make up for the problems of pure electric vehicles such as long charging time and short driving range on a single full charge. Extended-range electric vehicles have gradually become the development trend of electric vehicles by increasing driving range and continuously replenishing electricity. However, in the prior art, the main disadvantage of the cabin layout of extended-range electric vehicles is the lack of space in the front cabin, which limits the layout of the range extender in the front cabin. Utility Model Content

[0003] The purpose of the present application is to provide a frame assembly and a vehicle thereof, which can meet the layout requirements of the range extender assembly while ensuring the stability of the installation of the range extender assembly.

[0004] The first aspect of the present application discloses a frame assembly, comprising: a first longitudinal beam, a second longitudinal beam and a cross beam, wherein the cross beam is connected between the first longitudinal beam and the second longitudinal beam; the frame assembly also includes a range extender assembly and a suspension bracket assembly, wherein the range extender assembly is located in the area below the front seats of the vehicle and between the first longitudinal beam and the second longitudinal beam, and the suspension bracket assembly includes a first suspension bracket, a second suspension bracket and a third suspension bracket, wherein the first suspension bracket is connected between the range extender assembly and the first longitudinal beam, the second suspension bracket is connected between the range extender assembly and the second longitudinal beam, and the third suspension bracket is connected between the range extender assembly and the cross beam.

[0005] In an exemplary embodiment of the present application, the range extender assembly includes an engine and a range extender, and the engine and the range extender are both located under the front seats of the vehicle and between the first longitudinal beam and the second longitudinal beam; the first suspension bracket includes a first adapter bracket and a first vibration damping bracket connected to each other, the first adapter bracket is connected to the first longitudinal beam, and the first vibration damping bracket is connected to the engine; the second suspension bracket includes a second adapter bracket and a second vibration damping bracket connected to each other, the second adapter bracket is connected to the second longitudinal beam, and the second vibration damping bracket is connected to the engine; the third suspension bracket includes a third adapter bracket and a third vibration damping bracket connected to each other, the third adapter bracket is connected to the cross beam, and the third vibration damping bracket is connected to the range extender.

[0006] In an exemplary embodiment of the present application, an area enclosed by the first suspension bracket, the second suspension bracket and the third suspension bracket is in the shape of a “triangle”.

[0007] In an exemplary embodiment of the present application, the angle between the line between the cylinder of the engine and the crankshaft of the engine and the height direction of the vehicle is α, and the value range of α is 50°-60°.

[0008] In an exemplary embodiment of the present application, the first vibration damping bracket, the second vibration damping bracket and the third vibration damping bracket each include a vibration damping part and a bracket part, the vibration damping part is connected to the corresponding first adapter bracket, the second adapter bracket or the third vibration damping bracket, and the bracket part is connected to the engine or the range extender.

[0009] In an exemplary embodiment of the present application, the first adapter bracket includes a first bracket portion and a second bracket portion that are connected to each other, the first bracket portion is in a "U"-shaped structure, the second bracket portion is arranged around the first bracket portion, the vibration-damping portion of the first vibration-damping bracket is located in the "U"-shaped structure and is connected to the first bracket portion, and the second bracket portion is connected to the first longitudinal beam.

[0010] In an exemplary embodiment of the present application, the second adapter bracket includes a third bracket portion, a fourth bracket portion and an intermediate bracket portion, the third bracket portion and the fourth bracket portion are connected to two opposite sides of the intermediate bracket portion one by one, the intermediate bracket portion is connected to the second longitudinal beam, and the vibration-damping portion of the second vibration-damping bracket is connected between the third bracket portion and the fourth bracket portion; wherein an avoidance notch is provided at one end of the intermediate bracket portion away from the second longitudinal beam, and the vibration-damping portion of the second vibration-damping bracket is arranged corresponding to the avoidance notch.

[0011] In an exemplary embodiment of the present application, the second bracket portion is provided with a first flange, and the third bracket portion and the fourth bracket portion are both provided with a second flange.

[0012] In an exemplary embodiment of the present application, the intermediate support portion is provided with a reinforcing rib, and the reinforcing rib is located in the middle position of the intermediate support portion.

[0013] The second aspect of the present application discloses a vehicle, comprising a vehicle body and the frame assembly, wherein the frame assembly is connected to the vehicle body.

[0014] The beneficial effects of this application scheme are:

[0015] In the embodiment of the present application, the range extender assembly is located in the area below the front seats of the vehicle, so as to avoid difficulties in arranging the range extender assembly due to insufficient space in the front cabin of the vehicle, and to rationally utilize the space of the entire vehicle to meet the layout requirements of the range extender assembly; in addition, the range extender assembly is connected to the first longitudinal beam through the first suspension bracket, to the second longitudinal beam through the second suspension bracket, and to the cross beam through the third suspension bracket, so that the range extender assembly can be stably installed in the entire vehicle to ensure the stability of the installation of the range extender assembly.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the arrangement structure of the range extender assembly in the whole vehicle in an embodiment of the present application is shown.

[0018] Figure 2 A three-dimensional structural schematic diagram of the frame assembly in an embodiment of the present application is shown.

[0019] Figure 3 A three-dimensional structural schematic diagram of the range extender assembly and the suspension bracket assembly in an embodiment of the present application is shown.

[0020] Figure 4 A schematic diagram of the three-dimensional structure of the engine in an embodiment of the present application is shown.

[0021] Figure 5 A schematic diagram of the arrangement structure of the suspension bracket assembly in an embodiment of the present application is shown.

[0022] Figure 6 A schematic diagram of the three-dimensional structure of the first adapter bracket in an embodiment of the present application is shown.

[0023] Figure 7 A schematic diagram of the three-dimensional structure of the second adapter bracket in the embodiment of the present application is shown.

[0024] Among them, 1, first longitudinal beam; 2, second longitudinal beam; 3, cross beam; 4, range extender assembly; 41, engine; 42, range extender; 5, suspension bracket assembly; 501, first fixing hole; 502, second fixing hole; 503, first mounting hole; 504, third fixing hole; 505, fourth fixing hole; 506, second mounting hole; 507, avoidance gap; 51, first suspension bracket; 511, first adapter bracket; 5111, first bracket part; 5112, second bracket part; 512, first A vibration-damping bracket; 52, a second suspension bracket; 521, a second adapter bracket; 5211, a third bracket portion; 5212, a fourth bracket portion; 5213, an intermediate bracket portion; 522, a second vibration-damping bracket; 53, a third suspension bracket; 531, a third adapter bracket; 532, a third vibration-damping bracket; 6, front seats; 7, front cabin; a, vibration-damping portion; b, bracket portion; c, a first connecting plate; d, a second connecting plate; e, an intermediate connecting plate; f, a first flange; g, a second flange; h, a reinforcing rib. DETAILED DESCRIPTION

[0025] The following will describe the implementation of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0026] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0027] like Figures 1 to 7 As shown, this embodiment proposes a frame assembly, including: a first longitudinal beam 1, a second longitudinal beam 2 and a cross beam 3, the cross beam 3 is connected between the first longitudinal beam 1 and the second longitudinal beam 2; the frame assembly also includes a range extender assembly 4 and a suspension bracket assembly 5, the range extender assembly 4 is located in the area below the front seats 6 of the vehicle, and is located between the first longitudinal beam 1 and the second longitudinal beam 2.

[0028] In this embodiment, the range extender assembly 4 is arranged in the area below the front seat 6 of the vehicle along the length direction of the first longitudinal beam 1 or the second longitudinal beam 2, the range extender assembly 4 is located between the first longitudinal beam 1 and the second longitudinal beam 2, and is arranged opposite to the cross beam 3 along the length direction of the first longitudinal beam 1 or the second longitudinal beam 2.

[0029] Furthermore, the suspension bracket assembly 5 includes a first suspension bracket 51, a second suspension bracket 52 and a third suspension bracket 53, the first suspension bracket 51 is connected between the range extender assembly 4 and the first longitudinal beam 1, the second suspension bracket 52 is connected between the range extender assembly 4 and the second longitudinal beam 2, and the third suspension bracket 53 is connected between the range extender assembly 4 and the cross beam 3.

[0030] In the present embodiment, the range extender assembly 4 is located in the area below the front seats 6 of the vehicle, so as to avoid the difficulty in arranging the range extender assembly 4 due to insufficient space in the front cabin 7 of the vehicle, and to reasonably utilize the space of the whole vehicle to meet the arrangement requirements of the range extender assembly 4; in addition, the range extender assembly 4 is connected to the first longitudinal beam 1 through the first suspension bracket 51, to the second longitudinal beam 2 through the second suspension bracket 52, and to the cross beam 3 through the third suspension bracket 53, so that the range extender assembly 4 can be stably installed in the whole vehicle to ensure the stability of the installation of the range extender assembly 4.

[0031] In this embodiment, combined with Figures 1 to 3 As shown, the range extender assembly 4 includes an engine 41 and a range extender 42. The engine 41 and the range extender 42 are an integrated structure, which is conducive to improving the integration degree of the range extender assembly 4 and the utilization rate of the vehicle space. The engine 41 and the range extender 42 are both located under the front seat 6 of the vehicle and between the first longitudinal beam 1 and the second longitudinal beam 2. The engine 41 and the range extender 42 are arranged relative to the cross beam 3 along the length direction of the first longitudinal beam 1 or the second longitudinal beam 2.

[0032] In this embodiment, the engine 41 is a common four-cylinder, four-stroke engine 41, and the engine 41 is naturally aspirated. No components such as an air-conditioning compressor and a steering pump are installed at the gear train end of the engine 41, which can improve fuel economy and reduce space occupancy.

[0033] Combination Figure 2 and Figure 3 As shown, the first suspension bracket 51 includes a first adapter bracket 511 and a first vibration damping bracket 512 connected to each other, the first adapter bracket 511 is connected to the first longitudinal beam 1, and the first vibration damping bracket 512 is connected to the engine 41; the second suspension bracket 52 includes a second adapter bracket 521 and a second vibration damping bracket 522 connected to each other, the second adapter bracket 521 is connected to the second longitudinal beam 2, and the second vibration damping bracket 522 is connected to the engine 41; the third suspension bracket 53 includes a third adapter bracket 531 and a third vibration damping bracket 532 connected to each other, the third adapter bracket 531 is connected to the cross beam 3, and the third vibration damping bracket 532 is connected to the range extender 42.

[0034] In this embodiment, the first vibration damping bracket 512 can reduce the vibration transmitted from the engine 41 to the first longitudinal beam 1 to a certain extent, the second vibration damping bracket 522 can reduce the vibration transmitted from the engine 41 to the second longitudinal beam 2 to a certain extent, and the third vibration damping bracket 532 can reduce the vibration transmitted from the engine 41 to the cross beam 3 to a certain extent, thereby preventing the vibration generated by the engine 41 from being transmitted from the first longitudinal beam 1, the second longitudinal beam 2 and the cross beam 3 to the front seat 6 of the vehicle, so as to improve the NVH performance of the entire vehicle.

[0035] In this embodiment, the thickness of the first adapter bracket 511 and the second adapter bracket 521 are both 4 mm, which can not only meet the bearing strength of the first adapter bracket 511 and the second adapter bracket 521, but also help to achieve the purpose of lightweight suspension bracket assembly 5.

[0036] In this embodiment, combined with Figure 2 and Figure 5 As shown, the area enclosed by the first suspension bracket 51, the second suspension bracket 52 and the third suspension bracket 53 is in a "triangle", and the range extender assembly 4 is installed on the vehicle in a three-point arrangement. Compared with other arrangements, the three-point arrangement is more conducive to improving the installation stability of the range extender assembly 4.

[0037] In this embodiment, combined with Figure 4 As shown, the engine 41 is tilted, that is, the angle between the line between the cylinder of the engine 41 and the crankshaft of the engine 41 and the height direction of the vehicle is α, and the value range of α is 50°-60°.

[0038] It should be understood that since the height of the area below the front seats 6 is insufficient, the engine 41 needs to be arranged at an angle so that the engine 41 can be installed in the area below the front seats 6 to avoid the problem that the engine 41 cannot be arranged.

[0039] For example, α can be 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, etc.

[0040] Preferably, α is 55° to better match the space under the front seats 6 .

[0041] Combination Figure 2 and Figure 3 As shown, the first vibration damping bracket 512, the second vibration damping bracket 522 and the third vibration damping bracket 532 all include a vibration damping part a and a bracket part b, the vibration damping part a is connected to the corresponding first adapter bracket 511, the second adapter bracket 521 or the third adapter bracket 531, and the bracket part b is connected to the engine 41 or the range extender 42.

[0042] Specifically, the vibration reduction part a of the first vibration reduction bracket 512 is connected to the first adapter bracket 511, and the bracket part b of the first vibration reduction bracket 512 is connected to the engine 41; the vibration reduction part a of the second vibration reduction bracket 522 is connected to the second adapter bracket 521, and the bracket part b of the second vibration reduction bracket 522 is connected to the engine 41; the vibration reduction part a of the third vibration reduction bracket 532 is connected to the third adapter bracket 531, and the bracket part b of the third vibration reduction bracket 532 is connected to the range extender 42.

[0043] For example, the vibration-damping part a is a rubber pad, which has vibration-damping and buffering functions and can reduce the vibration transmitted from the engine 41 to the entire vehicle.

[0044] In this embodiment, the first adapter bracket 511 is connected to the first vibration damping bracket 512 by passing through the vibration damping part a of the first vibration damping bracket 512 with a bolt, the second adapter bracket 521 is connected to the second vibration damping bracket 522 by passing through the vibration damping part a of the second vibration damping bracket 522 with a bolt, and the third adapter bracket 531 is connected to the third vibration damping bracket 532 by passing through the vibration damping part a of the third vibration damping bracket 532 with a bolt. The use of bolts for fixing is not only conducive to improving the convenience of disassembly and assembly of the suspension bracket assembly 5, but also can reduce development costs and improve the commonality of the suspension bracket assembly 5.

[0045] Combination Figure 2 , Figure 3 and Figure 6 As shown, the first adapter bracket 511 includes a first bracket portion 5111 and a second bracket portion 5112 that are interconnected, the first bracket portion 5111 is in a "U"-shaped structure, the second bracket portion 5112 is arranged around the first bracket portion 5111, the vibration-damping portion a of the first vibration-damping bracket 512 is located in the "U"-shaped structure and is connected to the first bracket portion 5111, and the second bracket portion 5112 is connected to the first longitudinal beam 1.

[0046] In this embodiment, the first bracket portion 5111 includes a first connecting plate c, a second connecting plate d and an intermediate connecting plate e, and the intermediate connecting plate e is connected between the first connecting plate c and the second connecting plate d to form a "U"-shaped structure. The first connecting plate c is provided with a first fixing hole 501, and the second connecting plate d is provided with a second fixing hole 502. The first fixing hole 501 and the second fixing hole 502 are arranged opposite to each other, and the vibration reduction portion a of the first vibration reduction bracket 512 is located in the "U"-shaped structure. A bolt passes through the first fixing hole 501, the vibration reduction portion a of the first vibration reduction bracket 512 and the second fixing hole 502 in sequence to realize the connection between the first adapter bracket 511 and the vibration reduction portion a of the first vibration reduction bracket 512.

[0047] It should be understood that the bolts may also pass through the second fixing hole 502 , the vibration-damping portion a of the first vibration-damping bracket 512 , and the first fixing hole 501 in sequence to connect the first adapter bracket 511 with the vibration-damping portion a of the first vibration-damping bracket 512 .

[0048] In addition, the second bracket portion 5112 is provided with four first mounting holes 503 , and the four first mounting holes 503 are arranged around the first bracket portion 5111 . Four bolts pass through the four first mounting holes 503 and are connected to the first longitudinal beam 1 to achieve the connection between the engine 41 and the first longitudinal beam 1 .

[0049] Combination Figure 2 , Figure 3 and Figure 7 As shown, the second adapter bracket 521 includes a third bracket portion 5211, a fourth bracket portion 5212 and an intermediate bracket portion 5213, the third bracket portion 5211 and the fourth bracket portion 5212 are connected to two opposite sides of the intermediate bracket portion 5213 one by one, the intermediate bracket portion 5213 is connected to the second longitudinal beam 2, and the vibration reduction portion a of the second vibration reduction bracket 522 is connected between the third bracket portion 5211 and the fourth bracket portion 5212.

[0050] In this embodiment, the third bracket part 5211 is provided with a third fixing hole 504, the fourth bracket part 5212 is provided with a fourth fixing hole 505, the third fixing hole 504 and the fourth fixing hole 505 are arranged opposite to each other, the vibration reduction part a of the second vibration reduction bracket 522 is connected between the third bracket part 5211 and the fourth bracket part 5212, and a bolt passes through the third fixing hole 504, the vibration reduction part a of the second vibration reduction bracket 522 and the fourth fixing hole 505 in sequence to realize the connection between the second adapter bracket 521 and the vibration reduction part a of the second vibration reduction bracket 522. In addition, the intermediate bracket part 5213 is provided with four second mounting holes 506, the shape surrounded by the four second mounting holes 506 is a "rectangular", and four bolts pass through the four second mounting holes 506 to connect with the second longitudinal beam 2 to realize the connection between the engine 41 and the second longitudinal beam 2.

[0051] It should be understood that the bolts may also pass through the fourth fixing hole 505 , the vibration-damping portion a of the first vibration-damping bracket 512 , and the third fixing hole 504 in sequence to connect the second adapter bracket 521 with the vibration-damping portion a of the second vibration-damping bracket 522 .

[0052] In this embodiment, combined with Figure 2 , Figure 3 and Figure 7 As shown, an avoidance gap 507 is provided at one end of the middle bracket portion 5213 away from the second longitudinal beam 2, and the vibration-damping portion a of the second vibration-damping bracket 522 is arranged corresponding to the avoidance gap 507 to facilitate the connection between the vibration-damping portion a of the second vibration-damping bracket 522 and the third bracket portion 5211 and the fourth bracket portion 5212.

[0053] Combination Figure 6 and Figure 7 As shown, the second bracket portion 5112 is provided with a first flange f, and the third bracket portion 5211 and the fourth bracket portion 5212 are both provided with a second flange g.

[0054] In this embodiment, the first flange f and the second flange g are both formed by stamping. The first flange f can strengthen the bearing strength of the first adapter bracket 511, and the second flange g can strengthen the bearing strength of the second adapter bracket 521, so as to ensure the stability of the range extender assembly 4 installed on the first longitudinal beam 1 and the second longitudinal beam 2 through the first adapter bracket 511 and the second adapter bracket 521.

[0055] Combination Figure 7 As shown, the middle bracket portion 5213 is provided with a reinforcing rib h, and the reinforcing rib h is located in the middle position of the middle bracket portion 5213 .

[0056] In this embodiment, the reinforcing rib h is located between the four second mounting holes 506 , and the reinforcing rib h can improve the rigidity of the middle bracket portion 5213 , thereby preventing the middle bracket portion 5213 from being deformed or even damaged due to the opening, thereby affecting the connection between the engine 41 and the second cross beam 3 .

[0057] This embodiment also provides a vehicle, including a vehicle body and the above-mentioned frame assembly, wherein the frame assembly is connected to the vehicle body.

[0058] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A vehicle frame assembly, characterized in that: include: a first longitudinal beam, a second longitudinal beam, and a cross beam, wherein the cross beam is connected between the first longitudinal beam and the second longitudinal beam; The frame assembly also includes a range extender assembly and a suspension bracket assembly, the range extender assembly is located in the area below the front seats of the vehicle and between the first longitudinal beam and the second longitudinal beam, the suspension bracket assembly includes a first suspension bracket, a second suspension bracket and a third suspension bracket, the first suspension bracket is connected between the range extender assembly and the first longitudinal beam, the second suspension bracket is connected between the range extender assembly and the second longitudinal beam, and the third suspension bracket is connected between the range extender assembly and the cross beam.

2. The frame assembly according to claim 1, characterized in that: The range extender assembly includes an engine and a range extender, wherein the engine and the range extender are both located under the front seats of the vehicle and between the first longitudinal beam and the second longitudinal beam; The first suspension bracket includes a first adapter bracket and a first vibration-damping bracket connected to each other, the first adapter bracket is connected to the first longitudinal beam, and the first vibration-damping bracket is connected to the engine; The second suspension bracket includes a second adapter bracket and a second vibration-damping bracket connected to each other, the second adapter bracket is connected to the second longitudinal beam, and the second vibration-damping bracket is connected to the engine; The third suspension bracket includes a third adapter bracket and a third vibration-damping bracket that are connected to each other, the third adapter bracket is connected to the crossbeam, and the third vibration-damping bracket is connected to the range extender.

3. The vehicle frame assembly according to claim 1, characterized in that: The area enclosed by the first suspension bracket, the second suspension bracket and the third suspension bracket is in a “triangle” shape.

4. The frame assembly according to claim 2, characterized in that: The angle between the line between the cylinder of the engine and the crankshaft of the engine and the height direction of the vehicle is α, and the value range of α is 50°-60°.

5. The vehicle frame assembly according to claim 2, characterized in that: The first vibration damping bracket, the second vibration damping bracket and the third vibration damping bracket each include a vibration damping portion and a bracket portion, the vibration damping portion is connected to the corresponding first adapter bracket, the second adapter bracket or the third vibration damping bracket, and the bracket portion is connected to the engine or the range extender.

6. The vehicle frame assembly according to claim 5, characterized in that: The first adapter bracket includes a first bracket portion and a second bracket portion connected to each other, the first bracket portion is a "U"-shaped structure, the second bracket portion is arranged around the first bracket portion, the vibration reduction portion of the first vibration reduction bracket is located in the "U"-shaped structure and connected to the first bracket portion, and the second bracket portion is connected to the first longitudinal beam.

7. The vehicle frame assembly according to claim 6, characterized in that: The second adapter bracket includes a third bracket portion, a fourth bracket portion and an intermediate bracket portion, wherein the third bracket portion and the fourth bracket portion are connected to two opposite sides of the intermediate bracket portion in a one-to-one correspondence, the intermediate bracket portion is connected to the second longitudinal beam, and the vibration reduction portion of the second vibration reduction bracket is connected between the third bracket portion and the fourth bracket portion; wherein, An escape notch is provided at one end of the intermediate bracket portion away from the second longitudinal beam, and the vibration-damping portion of the second vibration-damping bracket is arranged corresponding to the escape notch.

8. The vehicle frame assembly according to claim 7, characterized in that: The second bracket portion is provided with a first flange, and the third bracket portion and the fourth bracket portion are both provided with a second flange.

9. The vehicle frame assembly according to claim 7, characterized in that: The intermediate support portion is provided with a reinforcing rib, and the reinforcing rib is located in the middle position of the intermediate support portion.

10. A vehicle, characterized in that: It comprises a vehicle body and a frame assembly as claimed in any one of claims 1 to 9, wherein the frame assembly is connected to the vehicle body.

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