Vehicle

Abstract

The embodiment of the invention discloses a vehicle. The vehicle comprises a cabin and a vehicle body frame. Wherein the cabin forms a passenger cabin, and the cabin is provided with a mounting part; the mounting part is connected with the vehicle body frame in a sealing manner; wherein the projection of the mounting part in the front-back direction of the vehicle is at least partially overlapped with the projection of the vehicle body frame in the front-back direction of the vehicle; and / or; and the projection of the mounting part in the left-right direction of the vehicle is at least partially overlapped with the projection of the vehicle body frame in the left-right direction of the vehicle.

Description

Technical Field

[0001] This application belongs to the technical field of automobiles. Specifically, this application relates to a vehicle. Background Art

[0002] Automobile lightweighting is a core technology and an important development direction in the automobile industry. It refers to minimizing the weight of the entire vehicle without sacrificing the safety, reliability, comfort, and cost control of the vehicle, thereby improving the power economy of the vehicle. The future development direction of automobiles will inevitably be fully electrified. Since the specific energy of the battery is much lower than that of fuel, in order to achieve a comparable driving range to that of fuel vehicles, the battery weight generally needs to be increased to more than 500 kg, and the battery weight accounts for about 20% - 30% of the entire vehicle weight. Therefore, the lightweighting demand for new energy vehicles, especially pure electric high-endurance vehicles, is more urgent. Summary of the Invention

[0003] The purpose of this application is to provide a new technical solution for a vehicle.

[0004] According to the first aspect of this application, a vehicle is provided. The vehicle includes:

[0005] A cockpit, which is formed as a passenger compartment and has a mounting portion formed thereon;

[0006] A body frame, and the mounting portion is connected to the body frame;

[0007] Wherein, the projection of the mounting portion in the vehicle's front-rear direction and the projection of the body frame in the vehicle's front-rear direction overlap at least partially;

[0008] And / or;

[0009] The projection of the mounting portion in the vehicle's left-right direction and the projection of the body frame in the vehicle's left-right direction overlap at least partially.

[0010] Optionally, the mounting portion is sealingly connected to the body frame.

[0011] Optionally, the body frame includes a front longitudinal beam, a sill beam, and a rear longitudinal beam that are sequentially connected from the front of the vehicle to the rear of the vehicle.

[0012] Optionally, the cockpit includes a front bulkhead, and the mounting portion is formed on the front bulkhead.

[0013] Optionally, the cockpit further includes side walls, and the mounting portion is formed on the front bulkhead and the side walls, and the mounting portions are respectively connected to the front longitudinal beam and the sill beam of the body frame.

[0014] Optionally, at least part of the mounting portion is made of carbon fiber material.

[0015] Optionally, the vehicle body frame is made of a metallic material.

[0016] Optionally, in the height direction of the vehicle body frame, the connecting surface of the vehicle body frame for connecting with the mounting portion is provided as an inclined surface.

[0017] Optionally, the inclined direction of the inclined surface faces the cockpit.

[0018] Optionally, the mounting portion includes a front profile, a middle profile, and a rear profile;

[0019] The vehicle body frame includes a front frame, a middle frame, and a rear frame;

[0020] The front frame is connected to the front profile, the middle frame is connected to the middle profile, and the rear frame is connected to the rear profile.

[0021] Optionally, the front frame includes a first cross beam and front longitudinal beams spaced apart in the vehicle width direction, and two ends of the first cross beam are connected to the front longitudinal beams.

[0022] Optionally, the front profile is connected to the first cross beam.

[0023] Optionally, the front frame includes a lower front cross beam, and two ends of the lower front cross beam are connected to the front longitudinal beams.

[0024] Optionally, the front profile is connected to the lower front cross beam.

[0025] Optionally, the first cross beam is connected to the lower front cross beam, and at least a part of the first cross beam is located above the lower front cross beam in the height direction of the vehicle body frame.

[0026] Optionally, the front longitudinal beam includes a longitudinal beam body and a longitudinal beam integrated part provided at the tail end of the longitudinal beam body, and two ends of the first cross beam are connected to the longitudinal beam integrated part;

[0027] The front profile is connected to the longitudinal beam integrated part.

[0028] Optionally, the projection of the front profile on the longitudinal beam integrated part and the first cross beam in the vehicle front-rear direction at least partially overlaps;

[0029] and / or;

[0030] The projection of the front profile on the lower front cross beam in the vehicle height direction at least partially overlaps.

[0031] Optionally, the front profile includes a front wall panel;

[0032] Or;

[0033] The front profile includes the front bulkhead and at least part of the floor.

[0034] Optionally, the front frame includes a front anti-collision beam and a front energy-absorbing box;

[0035] One end of the front energy-absorbing box is connected to the front anti-collision beam, and the other end is connected to the front longitudinal beam.

[0036] Optionally, an installation column is provided at one end of the front energy-absorbing box where it is connected to the front longitudinal beam, and the front energy-absorbing box is connected to the front longitudinal beam through the installation column.

[0037] Optionally, the front frame further includes an upper side beam, one end of the upper side beam is connected to the installation column, and the other end is connected to the cockpit.

[0038] Optionally, the longitudinal beam assembly includes an inner front longitudinal beam connecting beam facing inwards, and both ends of the first cross beam are connected to two of the inner front longitudinal beam connecting beams.

[0039] Optionally, the middle frame includes sill beams arranged at intervals in the left-right direction of the vehicle, the front side of the sill beam is connected to the front longitudinal beam, and the sill beam is connected to the middle profile.

[0040] Optionally, the front longitudinal beam includes a longitudinal beam body and a longitudinal beam assembly provided at the tail end of the longitudinal beam body, and the longitudinal beam assembly includes an outer front longitudinal beam connecting beam;

[0041] The sill beam is connected to the outer front longitudinal beam connecting beam;

[0042] The projection of the sill beam in the left-right direction of the vehicle at least partially overlaps with the projection of the outer front longitudinal beam connecting beam in the left-right direction of the vehicle.

[0043] Optionally, the middle profile is located above at least part of the outer front longitudinal beam connecting beam;

[0044] At least part of the middle profile is connected to at least part of the outer front longitudinal beam connecting beam in the front-rear direction of the vehicle.

[0045] Optionally, at least part of the middle profile is connected to at least part of the outer front longitudinal beam connecting beam in the height direction.

[0046] Optionally, the middle frame includes a seat installation longitudinal beam, and the seat installation longitudinal beam and the sill beam are connected to the outer front longitudinal beam connecting beam.

[0047] Optionally, the seat installation longitudinal beam is arranged between the sill beam and the outer front longitudinal beam connecting beam.

[0048] Optionally, an inclined connecting surface is provided on the sill beam and / or the seat installation longitudinal beam.

[0049] Optionally, the sill beam is provided with an inclined connecting surface;

[0050] And / or,

[0051] The seat mounting longitudinal beam is provided with an inclined connecting surface.

[0052] Optionally, in the vehicle width direction, the two surfaces on both sides of the top surface of the sill beam are provided as inclined connecting surfaces.

[0053] Optionally, the middle frame includes a front seat cross beam, and both ends of the front seat cross beam are connected to the seat mounting longitudinal beam.

[0054] Optionally, the middle frame includes a middle floor cross beam, and both ends of the middle floor cross beam are connected to the sill beam;

[0055] In the vehicle front-rear direction, the front side of the middle floor cross beam is connected to the seat mounting longitudinal beam.

[0056] Optionally, the middle frame further includes a central tunnel, and the central tunnel is fixedly connected to the front seat cross beam, the middle floor cross beam, and the lower front bulkhead beam.

[0057] Optionally, the middle profile is respectively connected to the central tunnel, the front seat cross beam, the seat mounting longitudinal beam, and the sill beam.

[0058] Optionally, the rear frame includes a lower rear seat cross beam and rear longitudinal beams arranged at intervals in the vehicle width direction, and both ends of the lower rear seat cross beam are respectively connected to the rear longitudinal beams.

[0059] Optionally, the rear profile is connected to the rear longitudinal beams and the lower rear seat cross beam.

[0060] Optionally, the rear longitudinal beam includes a connected connecting portion and a rear longitudinal beam body, and the rear longitudinal beam body is connected to the sill beam through the connecting portion;

[0061] The lower rear seat cross beam is connected to the connecting portion.

[0062] Optionally, the connecting portion includes a first connecting portion, a second connecting portion, and a third connecting portion arranged at intervals in the vehicle width direction;

[0063] The first connecting portion and the second connecting portion are connected to the lower rear seat cross beam, and the third connecting portion is connected to the sill beam.

[0064] One beneficial effect of the present application is that:

[0065] The vehicle proposed in the embodiments of the present application seals and connects the cockpit located in the upper part to the body frame located in the lower part through a specially designed installation part, which can ensure the structural strength and rigidity of the vehicle, thus guaranteeing the collision safety performance of the whole vehicle, and at the same time having the characteristic of convenient connection; moreover, the frame-type body design adopted in the present application is also beneficial to reducing the weight of the vehicle and realizing the lightweight of the vehicle.

[0066] Other features and advantages of the present application will become clear through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present application and, together with the description, are used to explain the principles of the present application.

[0068] Figure 1 It is a schematic diagram of the structural decomposition of the vehicle provided by the embodiments of the present application;

[0069] Figure 2 It is a schematic diagram of the structure of the connection between the front frame and the front surface provided by the embodiments of the present application;

[0070] Figure 3 It is an exploded view of the cockpit and the body frame provided by the embodiments of the present application;

[0071] Figure 4 It is a schematic diagram of the structure of the body frame provided by the embodiments of the present application;

[0072] Figure 5 It is a schematic diagram of the connection between the cockpit and the body frame provided by the embodiments of the present application;

[0073] Figure 6 It is a cross-sectional view of the sill and the seat installation longitudinal beam provided by the embodiments of the present application.

[0074] DESCRIPTION OF THE REFERENCE NUMERALS

[0075] 10, front frame; 20, cockpit; 30, middle frame; 40, rear frame;

[0076] 111, front anti-collision beam; 113, front energy-absorbing box; 114, upper side beam; 131, installation column; 141, front longitudinal beam; 145, front wheel arch; 167, first cross beam; 168, lower front cross beam; 169, outer connecting beam of the front longitudinal beam; 170, inner connecting beam of the front longitudinal beam;

[0077] 201, front panel; 211, floor; 241, side panel; 2411, inner side panel; 2412, outer side panel;

[0078] 213, Central tunnel; 214, Front seat crossbeam; 215, Middle floor crossbeam; 224, Longitudinal seat mounting beam; 244, Sill beam; 291, Body panel; 292, Inclined surface; 296, Lower surface of the sill beam; 203, Lower surface of the longitudinal seat mounting beam;

[0079] 411, Rear longitudinal beam; 451, Rear wheel arch; 482, Lower crossbeam of the rear seat back;

[0080] 1, First connecting portion; 2, Second connecting portion; 3, Third connecting portion. Detailed implementation mode

[0081] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application.

[0082] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present application or its application or use.

[0083] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be regarded as part of the specification.

[0084] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0085] It should be noted that: Like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0086] The following combines the attached Figures 1 to 6 , and describes the vehicle provided by the embodiments of the present application in detail.

[0087] According to one aspect of the present application, a vehicle is provided. Referring to Figure 1 , the vehicle includes: a cockpit 20, the cockpit 20 is formed as an occupant compartment, and the cockpit 20 is formed with a mounting portion; the vehicle further includes a body frame, and the mounting portion is sealingly connected to the body frame; wherein, the projection of the mounting portion in the vehicle front-rear direction and the projection of the body frame in the vehicle front-rear direction at least partially overlap; and / or; the projection of the mounting portion in the vehicle left-right direction and the projection of the body frame in the vehicle left-right direction at least partially overlap.

[0088] The vehicle proposed in the embodiments of the present application seals and connects the cockpit 20 located in the upper part to the body frame located in the lower part through a specially designed mounting part, which can ensure the structural strength and rigidity of the vehicle, thus guaranteeing the collision safety performance of the whole vehicle, and at the same time having the characteristic of convenient connection. Moreover, the frame-type body design adopted in the present application is also conducive to reducing the weight of the vehicle and realizing the lightweight of the vehicle.

[0089] The vehicle proposed in the embodiments of the present application adopts a frame-type body, which plays a very crucial role in reducing the weight of the vehicle and can achieve the purpose of reducing the body weight. The vehicle provided by the embodiments of the present application can improve the power economy of new energy vehicles, especially pure electric high-endurance vehicles.

[0090] In some examples of the present application, the mounting part is hermetically connected to the body frame.

[0091] For example, the mounting part between the cockpit 20 and the body frame can be sealed with sealant, which can bond the cockpit 20 and the body frame into one body and also make the cockpit 20 fit well with the body frame.

[0092] In some examples of the present application, refer to Figures 2 to 4 , the body frame includes a front longitudinal beam 141, a sill beam 244 and a rear longitudinal beam 411 that are sequentially connected from the front of the vehicle to the rear of the vehicle.

[0093] According to the above example, the front longitudinal beam 141, the sill beam 244 and the rear longitudinal beam 411 form the basic skeleton of the body frame from front to rear. The cockpit 20 can be respectively connected to the front longitudinal beam 141, the sill beam 244 and the rear longitudinal beam 411, so that the cockpit 20 can form a stable connection with the body frame.

[0094] In some examples of the present application, refer to Figure 2 , the cockpit 20 includes a front bulkhead 201, and the mounting part is formed on the front bulkhead 201.

[0095] Among them, the mounting part is used to connect the cockpit 20 to the body frame. A part of the cockpit 20 is the above-mentioned front bulkhead 201. Refer to Figure 2 , it should be noted that the mounting part can be partially arranged on the front bulkhead 201 or entirely arranged on the front bulkhead 201. In this way, the front bulkhead 201 can form a connection with the body frame by means of the mounting part, thus realizing the connection between the cockpit 20 and the body frame.

[0096] In some examples of the present application, refer to Figures 2 to 4The cockpit 20 further includes side panels 241. Mounting portions are formed on the front panel 201 and the side panels 241, and the mounting portions are respectively connected to the front longitudinal beam 141 and the sill beam 244 of the vehicle body frame.

[0097] Among them, the cockpit 20 includes, for example, a front panel 201 located at the front of the vehicle and side panels 241 located on both sides of the front panel 201. In view of this, the mounting portions can be separately provided on the front panel 201 and the side panels 241. With such a design, the mounting portions can be connected to more parts on the vehicle body frame, thereby improving the connection strength and connection stability.

[0098] In some examples of the present application, at least part of the mounting portion is made of carbon fiber material.

[0099] Among them, for the mounting portion, carbon fiber material can be used in some areas, so as to reduce the weight of the mounting portion, and thus the weight of the cockpit 20 can be reduced.

[0100] Of course, the entire mounting portion can be made of carbon fiber material, so as to further reduce the weight of the cockpit 20.

[0101] In summary, for the vehicle provided by the embodiment of the present application, a mounting portion for tightly connecting to the vehicle body frame below is designed in the cockpit 20, and carbon fiber material can be partially or fully introduced into the manufacturing material of the mounting portion. Carbon fiber material (CFRP) has many advantages such as high specific strength (about 5 times or more that of steel), large design freedom, corrosion resistance, and fatigue resistance.

[0102] In the solution provided by the embodiment of the present application, by using carbon fiber material to manufacture the mounting portion of the cockpit 20 and replacing metal materials such as steel, the weight of the whole vehicle can be reduced by about 40% - 50%.

[0103] The cockpit 20 can be used to install vehicle interior trims, various electrical components, seats, etc., can serve as a mounting and receiving carrier, and can ensure the safety of the passenger compartment.

[0104] In the vehicle provided by the embodiment of the present application, the cockpit 20 can be partially made of carbon fiber material or fully made of carbon fiber material.

[0105] It should be noted that when both the cockpit 20 and the mounting portion are made of carbon fiber material, the weight of the whole vehicle can be greatly reduced.

[0106] In some examples of the present application, the vehicle body frame is made of metal material.

[0107] In the vehicle provided by the embodiment of the present application, the body frame located at the lower part is designed with a metal material, which can ensure the collision safety performance of the whole vehicle.

[0108] The body frame is, for example, an aluminum frame. Specifically, the body frame can be entirely made of aluminum material, which has the advantages of light weight, corrosion resistance, good impact resistance and strong plasticity, and will not excessively increase the production cost.

[0109] It should be noted that the body frame includes the aforementioned three parts, such as the front frame 10, the middle frame 30 and the rear frame 40. In actual production, all three parts can be designed as aluminum frames according to specific needs, or some of them can be selected as aluminum frames. The embodiment of the present application does not limit this.

[0110] In some examples of the present application, see Figure 6 , in the height direction of the body frame, the connection surface of the body frame for connecting with the installation part is set as an inclined surface.

[0111] In the solution provided by the embodiment of the present application, the cockpit 20 located above is, for example, a carbon fiber cockpit, and the body frame below is, for example, a metal frame. The assembly sequence during assembly is usually from bottom to top. This requires that some sealing surfaces in the vertical direction should be designed with a certain inclination so as to facilitate sealing during assembly from top to bottom. Therefore, in the height direction of the body frame, the connection surface of the body frame for connecting with the installation part is set as an inclined surface.

[0112] Among them, the inclination direction of the inclined surface faces the cockpit 20.

[0113] See Figure 6 , Figure 6 The inclination direction of the inclined surface provided on the sill beam 244 in

[0114] In some examples of the present application, see Figure 1 , the installation part includes a front profile, a middle profile and a rear profile, the body frame includes a front frame 10, a middle frame 30 and a rear frame 40, the front frame 10 is connected to the front profile, the middle frame 30 is connected to the middle profile, and the rear frame 40 is connected to the rear profile.

[0115] According to the above example, see Figure 1, the cockpit 20 is disposed above the vehicle body frame.

[0116] In a specific example, the front frame 10 of the vehicle body frame and the front surface of the mounting part can be hermetically connected by sealant, the middle frame 30 of the vehicle body frame and the middle surface of the mounting part can be hermetically connected by sealant, and the rear frame 40 of the vehicle body frame and the rear surface of the mounting part can be hermetically connected by sealant.

[0117] See Figure 1 , the vehicle body frame includes, for example, a front frame 10, a middle frame 30, and a rear frame 40, and the front frame 10, the middle frame 30, and the rear frame 40 are sequentially connected to finally form an integral structure. It should be noted that the front, middle, and rear sequences of the front frame 10, the middle frame 30, and the rear frame 40 are arranged in the length (front-rear direction) direction of the vehicle body frame. Among them, the front frame 10 is located at the front of the vehicle, and the rear frame 40 is located at the rear of the vehicle. The vehicle body frame can be used to support and fix the upper cockpit 20.

[0118] From the perspective of the overall structure, the vehicle proposed in the embodiment of the present application, see Figure 1 , includes a cockpit 20 located in the upper part and a vehicle body frame located in the lower part. Among them, the mounting part of the cockpit 20 is made of carbon fiber material, and the vehicle body frame located in the lower part is used to ensure the structural strength and rigidity of the whole vehicle to ensure the collision safety performance of the whole vehicle. The solution provided by the embodiment of the present application is a body frame structure design that can meet high performance and lightweight requirements, and is very suitable for application in electric vehicles with requirements for vehicle body weight.

[0119] The vehicle provided by the embodiment of the present application can be applied to, for example, pure electric high-endurance vehicles, especially electric sports car models. Sports cars require ultra-high performance, and in terms of the vehicle body structure, they need to meet higher performance and lighter weight. The vehicle provided by the embodiment of the present application can meet the above requirements for the vehicle body structure of sports cars, and while realizing the lightweight design of the vehicle body, it can also meet the safety requirements of the vehicle.

[0120] In the embodiment of the present application, the upper cockpit 20 includes a front surface, a middle surface, and a rear surface, so that it can be correspondingly connected to the three parts (front frame 10, middle frame 30, and rear frame 40) of the lower metal frame one by one. The connection method can be simplified.

[0121] In some examples of the present application, see Figure 2 , the front frame 10 includes a first cross beam 167 and front longitudinal beams 141 spaced apart in the vehicle width direction, and both ends of the first cross beam 167 are connected to the front longitudinal beams 141.

[0122] Among them, the front longitudinal beam 141 includes a left front longitudinal beam and a right front longitudinal beam that are spaced apart from each other left and right in the width direction of the vehicle body frame, and a first cross beam 167 is disposed between the left front longitudinal beam and the right front longitudinal beam, and the first cross beam 167 is disposed along the width direction of the vehicle body frame.

[0123] Specifically, referring to Figure 2 , the front longitudinal beam 141 includes, for example, a left front longitudinal beam and a right front longitudinal beam. The left front longitudinal beam is, for example, located on the left side of the front frame 10, and the right front longitudinal beam is, for example, located on the right side of the front frame 10. The two are oppositely arranged in the width direction and there is a certain interval between them. A first cross beam 167 is disposed between the left front longitudinal beam and the right front longitudinal beam to reinforce the front longitudinal beam.

[0124] In some examples of the present application, referring to Figure 2 , the front surface is connected to the first cross beam 167.

[0125] Optionally, the front surface forms a sealed connection with the first cross beam 167. Among them, the sealed connection can, for example, use sealant.

[0126] In some examples of the present application, the front frame 10 includes a lower front cross beam 168, and both ends of the lower front cross beam 168 are connected to the front longitudinal beam 141.

[0127] Among them, the front longitudinal beam 141 includes the aforementioned left front longitudinal beam and right front longitudinal beam, and the lower front cross beam 168 is connected between the left front longitudinal beam and the right front longitudinal beam. The lower front cross beam 168 can further reinforce the front longitudinal beam 141 and can also improve the firmness of the connection between the mounting portion and the vehicle body frame.

[0128] In some examples of the present application, referring to Figure 2 , the front surface is connected to the lower front cross beam 168.

[0129] Optionally, the front surface forms a sealed connection with the lower front cross beam 168. Among them, the sealed connection can, for example, use sealant.

[0130] In some examples of the present application, referring to Figure 2 , the first cross beam 167 is connected to the lower front cross beam 168, and in the height direction of the vehicle body frame, at least a part of the first cross beam 167 is located above the lower front cross beam 168.

[0131] According to the above examples, referring to Figure 2, the first crossbeam 167 and the front lower crossbeam 168 can be distributed in the height direction of the vehicle body frame, which facilitates the formation of two different connection positions between the vehicle body frame and the installation part in the height direction, and is beneficial to improving the connection strength.

[0132] Among them, the cross-section of the front lower crossbeam 168 is, for example, a triangular structure.

[0133] In some examples of the present application, referring to Figure 2 , the front longitudinal beam 141 includes a longitudinal beam body and a longitudinal beam integrated part arranged at the tail end of the longitudinal beam body, and both ends of the first crossbeam 167 are connected to the longitudinal beam integrated part; the front profile is connected to the longitudinal beam integrated part.

[0134] Specifically, referring to Figure 2 , a longitudinal beam integrated part is connected to the rear end of the front longitudinal beam (here, the rear end refers to the end close to the middle frame 30), and the longitudinal beam integrated part is, for example, a cast aluminum joint, which can be used to connect to the front profile.

[0135] A front wheelhouse 145 is arranged above the front longitudinal beam 141. Since the front longitudinal beam 141 includes a left front longitudinal beam and a right front longitudinal beam, on this basis, the front wheelhouse 145 includes a left front wheelhouse and a right front wheelhouse. Specifically, the left front wheelhouse is fixed on the left front longitudinal beam, the right front wheelhouse is fixed on the right front longitudinal beam, and the left front wheelhouse and the right front wheelhouse are arranged at intervals left and right.

[0136] Among them, the connection form between the left front longitudinal beam and the left front wheelhouse, and between the right front longitudinal beam and the right front wheelhouse includes, for example, any one of the following: the combined method of hot melt self-tapping screw FDS and structural adhesive, the screwing of screw connectors, and the combined method of self-piercing riveting SPR and structural adhesive.

[0137] In some examples of the present application, the front profile and the longitudinal beam integrated part, and the first crossbeam 167 overlap at least partially in the vehicle front-rear direction; and / or, the front profile and the front lower crossbeam 168 overlap at least partially in the vehicle height direction.

[0138] According to the design in the above examples, it is convenient for the cockpit 20 to be connected to different parts of the vehicle body frame through the installation part, improving the connection convenience.

[0139] In some examples of the present application, referring to Figure 2 , the front profile includes a front panel 201, or the front profile includes a front panel 201 and at least part of the floor 211.

[0140] According to the above examples, referring to Figure 2, the front surface of the cockpit 20 can be composed of, for example, the front wall panel 201 and the front vertical surface of the floor 211. These two parts can be respectively connected to the front wheel housing 145, the longitudinal beam assembly, the first cross beam 167 and the front lower cross beam 168 in the front frame at multiple locations. At these connection positions, connection methods such as sealant connection can be used to make the front surface form a sealed connection with the front frame 10 of the vehicle body frame. This connection method is simple and highly firm.

[0141] In some examples of the present application, refer to Figure 2 , the front frame 10 includes a front anti-collision beam 111 and a front energy-absorbing box 113. One end of the front energy-absorbing box 113 is connected to the front anti-collision beam 111, and the other end is connected to the front longitudinal beam 141.

[0142] According to the above examples, the collision safety performance of the whole vehicle can be ensured.

[0143] In some examples of the present application, refer to Figure 2 , an installation column 131 is provided at one end of the front energy-absorbing box 113 where it is connected to the front longitudinal beam 141. The front energy-absorbing box 113 is connected to the front longitudinal beam 141 through the installation column 131.

[0144] Among them, the installation column 131 extends along the vehicle height direction.

[0145] Through the installation column 131, the collision safety of the vehicle can be improved, and it is also convenient to connect the front energy-absorbing box 113 to the front end of the front longitudinal beam 141.

[0146] In some examples of the present application, refer to Figure 2 , the front frame 10 further includes an upper side beam 114. One end of the upper side beam 114 is connected to the installation column 131, and the other end is connected to the cockpit 20.

[0147] According to the above examples, refer to Figure 2 , the introduction of the upper side beam 114 can increase the force transmission path.

[0148] It should be noted that the upper side beam 114 can also be connected to the front wheel housing 145 to improve the stiffness of the upper side beam 114.

[0149] In some examples of the present application, refer to Figure 2 , the longitudinal beam assembly includes a front longitudinal beam inner connection beam 170 facing inward. Both ends of the first cross beam 167 are connected to the two front longitudinal beam inner connection beams 170.

[0150] In a specific example, the front frame 10 of the vehicle body frame includes: a front anti-collision beam 111, a front energy-absorbing box 113, an upper side beam 114, a front longitudinal beam 141, a front wheel housing 145, a first cross beam 167, a lower front bulkhead cross beam 168, and an inner connecting beam 170 of the front longitudinal beam.

[0151] Among them, referring to Figure 2 , the front anti-collision beam 111 can be fixedly connected to the front energy-absorbing box 113 by bolts. Four bolt joints can be shared during the connection, and the upper side beam 114 is bolted to the front anti-collision beam 111 and the front energy-absorbing box 113 at the side. The front energy-absorbing box 113 is connected to the mounting column 131, the upper side beam 114, and the front longitudinal beam 141 through four bolt joints.

[0152] Regarding the connection between the front longitudinal beam 141 and the front wheel housing 145. Specifically, both the front longitudinal beam 141 and the front wheel housing 145 are aluminum profiles and cast aluminum parts. Based on the structural forms of the aluminum profiles and cast aluminum parts, multiple connection forms are required, including FDS and structural adhesive forms, bolt connections, and SPR and structural adhesive connections. When designing the overlap between the front longitudinal beam and the front wheel housing 145, the dimensional tolerance in the height direction (i.e., the Z direction) needs to be considered. Therefore, there is a gap of 3 mm to 5 mm between the upper surface of the front longitudinal beam 141 in the Z direction and the front wheel housing 145 to ensure the adjustable space of the cast aluminum wheel housing in the Z direction.

[0153] Specifically, the inner connecting beam 170 of the front longitudinal beam is an important joint part. To ensure the vehicle's collision and durability performance, it adopts a casting structural form. It not only connects the front longitudinal beam 141 and the front wheel housing 145 together with the outer connecting beam 169 of the front longitudinal beam, but also connects the front longitudinal beam 141 with the first cross beam 167 and the lower front bulkhead cross beam 168 through FDS and bolt connection forms. Among them, the first cross beam 167 and the lower front bulkhead cross beam 168 are mainly connected by a combination of FDS and structural adhesive.

[0154] In some examples of the present application, referring to Figure 3 , the middle frame 30 includes sill beams 244 arranged at intervals in the left-right direction of the vehicle. The front side of the sill beam 244 is connected to the front longitudinal beam, and the sill beam 244 is connected to the middle profile.

[0155] Among them, the sill beam 244 is hermetically connected to the middle profile.

[0156] In some examples of the present application, the front longitudinal beam 141 includes a longitudinal beam body and a longitudinal beam integrated part provided at the tail end of the longitudinal beam body. The longitudinal beam integrated part further includes an outer connecting beam 169 of the front longitudinal beam;

[0157] The sill beam 244 is connected to the outer connecting beam 169 of the front longitudinal beam, and the projection of the sill beam 244 in the left-right direction of the vehicle at least partially overlaps with the projection of the outer connecting beam 169 of the front longitudinal beam in the left-right direction of the vehicle.

[0158] It should be noted that the sill beam 244 belongs to a part of the middle frame 30 of the vehicle body frame, and the middle surface of the installation part of the cockpit 20 can form a good alignment connection with the middle frame 30 of the vehicle body frame through the sill beam 244.

[0159] In some examples of the present application, referring to Figure 2 , the middle surface is located above at least part of the outer connecting beam 169 of the front longitudinal beam; at least part of the middle surface is connected to at least part of the outer connecting beam 169 of the front longitudinal beam in the front-rear direction of the vehicle.

[0160] Among them, at least part of the middle surface forms a sealed connection with at least part of the outer connecting beam 169 of the front longitudinal beam in the front-rear direction of the vehicle.

[0161] In some examples of the present application, referring to Figure 2 , at least part of the middle surface is connected to at least part of the outer connecting beam 169 of the front longitudinal beam in the height direction.

[0162] Among them, at least part of the middle surface forms a sealed connection with at least part of the outer connecting beam 169 of the front longitudinal beam in the height direction.

[0163] According to the above two examples, a firm connection can be formed between the middle surface and the outer connecting beam 169 of the front longitudinal beam, so that a firm connection can be formed with the vehicle body frame, especially the middle frame 30.

[0164] In some examples of the present application, referring to Figure 2 , the vehicle further includes a seat mounting longitudinal beam, and the seat mounting longitudinal beam is connected to the sill beam 244 and the outer connecting beam 169 of the front longitudinal beam.

[0165] In some examples of the present application, referring to Figure 3 , the middle frame includes a seat mounting longitudinal beam 224, and the seat mounting longitudinal beam 224 and the sill beam 244 are connected to the outer connecting beam 169 of the front longitudinal beam.

[0166] Among them, the seat mounting longitudinal beam 224 includes a left seat mounting longitudinal beam and a right seat mounting longitudinal beam arranged at left and right intervals along the width direction of the vehicle body frame, which can reinforce the sill beam 244 and can also be used to mount seats in the cockpit.

[0167] The vehicle provided by the embodiment of the present application, referring to Figure 1 and Figure 3, the lower body frame includes a middle frame 30, and the middle frame 30 includes sill beams 244 arranged at intervals left and right in the vehicle width direction and seat installation longitudinal beams 224 located inside the sill beams 244.

[0168] In some examples of the present application, refer to Figure 2 and Figure 3 , the seat installation longitudinal beam 224 is arranged between the sill beam 244 and the outer connecting beam 169 of the front longitudinal beam.

[0169] The middle surface is hermetically connected to the seat installation longitudinal beam 224. Since the seat installation longitudinal beam 224 belongs to the middle frame 30 of the body frame, the middle surface can also be hermetically connected to the seat installation longitudinal beam 224, which can strengthen the connection stability between the middle frame 30 and the middle surface.

[0170] In some examples of the present application, refer to Figure 6 , the sill beam 244; and / or, the seat installation longitudinal beam 224 is provided with an inclined connecting surface.

[0171] For example, in the vehicle width direction, refer to Figure 6 , two surfaces on both sides of the top surface of the sill beam 244 are set as inclined connecting surfaces.

[0172] Refer to Figure 6 , the sill beam 244 is formed by enclosing a main body plate 291, and the position of the main body plate 291 close to the seat installation longitudinal beam 224 is designed as an inclined surface 292. This is considered:

[0173] (1) The lower surface 296 of the sill beam and the lower surface 203 of the seat installation longitudinal beam are connected by FDS. Because the connection of FDS has a thickness requirement and cannot be too thick, when designing the inclined surface 292, if the lower surface 296 of the sill beam and the lower surface 203 of the seat installation longitudinal beam are connected and then the main body plate 291 is connected, it will be too thick.

[0174] (2) Refer to Figure 6 , according to Figure 6 the sectional view shown, the lower surface 296 of the sill beam and the main body plate 291 are bonded with structural adhesive (shown in black filling). When the lower surface 296 of the sill beam moves and assembles from right to left (the direction in the figure), this inclined surface 292 can play a guiding role.

[0175] It should be noted that the side wall 241 may include an outer side wall panel 2411 and an inner side wall panel 2412.

[0176] In some examples of the present application, refer to Figure 3, the middle frame 30 includes a front seat crossbeam 214, and both ends of the front seat crossbeam 214 are connected to the seat mounting longitudinal beam 224.

[0177] In some examples of the present application, referring to Figure 3 , the middle frame includes a middle floor crossbeam 215, and both ends of the middle floor crossbeam 215 are connected to the sill beam 244; in the vehicle front-rear direction, the front side of the middle floor crossbeam 215 is connected to the seat mounting longitudinal beam 224.

[0178] According to the above two examples, the front seat crossbeam 214 and the middle floor crossbeam 215 can reinforce the vehicle body frame. The front seat crossbeam 214 can be used to mount the seat.

[0179] In some examples of the present application, referring to Figure 3 , the middle frame 30 further includes a central tunnel 213, and the central tunnel 213 is fixedly connected to the front seat crossbeam 214, the middle floor crossbeam 215, and the lower front crossbeam 168.

[0180] In some examples of the present application, the middle profile is respectively connected to the central tunnel 213, the front seat crossbeam 214, the seat mounting longitudinal beam 224, and the sill beam 244.

[0181] Among them, the middle profile forms a sealed connection with the central tunnel 213, the front seat crossbeam 214, the seat mounting longitudinal beam 224, and the sill beam 244 respectively.

[0182] Among them, the middle profile may include a floor 211 and a side wall 241, and the floor 211 and the side wall 241 are respectively connected to the sill beam 244.

[0183] Referring to Figure 3 , the front seat crossbeam 214 and the middle floor crossbeam 215 are arranged between the seat mounting longitudinal beams 224, and a central tunnel 213 is arranged parallel to the sill beam 244. Among them, the directions of the front seat crossbeam 214 and the middle floor crossbeam 215 are different from that of the central tunnel 213. The middle profile of the installation part of the cockpit 20 is mainly composed of a floor 211 and a side wall 241. These two parts included in the middle profile can form a multi-position and decentralized sealed fixation with the sill beam 244, the seat mounting longitudinal beam 224, the front seat crossbeam 214, the central tunnel 213, and the middle floor crossbeam 215 in a way of bonding with sealant. This connection method has good firmness, low cost, and simple process.

[0184] Optionally, both ends of the sill beam 244 are respectively screwed to the middle profile to form a screwed fixation, and at least two screws are used at each connection end to form two screwed fixation points.

[0185] For example, referring to Figure 5 , both ends of the sill beam 244 and the middle profile can be fixed through four screw joints A, which can improve the connection stability between the cockpit 20 and the vehicle body frame.

[0186] That is to say, on the basis of gluing, a screwed connection method can be continued for strengthening connection.

[0187] Among them, in the vehicle height direction, the height of the middle floor cross beam 215 is set to be greater than or equal to the height of the seat installation longitudinal beam 224.

[0188] Among them, the lower surface of the central tunnel 213 is flush with the lower surfaces of the front seat cross beam 214 and the middle floor cross beam 215, and the upper surface of the central tunnel 213 is higher than the upper surfaces of the front seat cross beam 214 and the middle floor cross beam 215.

[0189] Among them, the front seat cross beam 214 is made of aluminum profile, and it is a complete cross beam starting from the seat installation longitudinal beam 224, which can ensure the integrity of the force transmission structure.

[0190] Among them, the central tunnel 213 overlaps on the front seat cross beam 214 and is connected by metal inert gas welding (MIG welding). To ensure the transmission of collision force, in the height direction (i.e., the Z direction) of the central tunnel 213, its lower surface is flush with the lower surface of the front seat cross beam 214, but the upper surface can be designed to be 35 mm to 40 mm higher than the upper surface of the front seat cross beam 214.

[0191] Among them, the front seat cross beam 214 is connected to the seat installation longitudinal beam 224 in the form of a combination of FDS and structural adhesive.

[0192] Among them, the central tunnel 213 and the middle floor cross beam 215 are connected by metal inert gas welding (MIG welding). To ensure the transmission of collision force and the convenience of welding, in the height direction (i.e., the Z direction) of the middle floor cross beam 215, its lower surface is flush with the lower surface of the central tunnel 213, but the upper surface is designed to be about 10 mm higher than the upper surface of the central tunnel 213.

[0193] Among them, the seat installation longitudinal beam 224 and the floor middle cross beam 215 adopt various connection methods such as, for example, metal inert gas welding connection (MIG welding connection). To ensure the transmission of collision force and welding convenience, in the height direction (i.e., the Z direction), the lower surface of the floor middle cross beam 215 is flush with the lower surface of the central channel 213, and the Z-direction height needs to be flush with or about 5 mm higher than any seat installation longitudinal beam.

[0194] It should be noted that for the middle frame 30 provided in the embodiment of the present application, after the central channel 213, the seat front cross beam 214, the floor middle cross beam 215, and the seat installation longitudinal beam 224 are welded, they are then connected to the sill beam 244. When connecting, various connection methods such as the combination of FDS and structural adhesive, MIG welding, etc. can be adopted.

[0195] According to the vehicle provided by the embodiment of the present application, a mainly screwed connection method is adopted between the rear frame 40 of the vehicle body frame and the rear surface of the installation part of the cockpit 20. Among them, each part of the rear frame 40 is mainly composed of aluminum profiles and cast aluminum parts.

[0196] In some examples of the present application, see Figure 4 , the rear frame 40 includes a rear backrest lower cross beam 482 and rear longitudinal beams 411 arranged at intervals in the vehicle width direction, and both ends of the rear backrest lower cross beam 482 are respectively connected to the rear longitudinal beams 411.

[0197] Among them, the rear longitudinal beam 411 includes a left rear longitudinal beam and a right rear longitudinal beam, the left rear longitudinal beam and the right rear longitudinal beam are arranged at left and right intervals in the vehicle width direction, and the rear backrest lower cross beam 482 is connected between the left rear longitudinal beam and the right rear longitudinal beam.

[0198] In some examples of the present application, see Figure 4 , the rear surface is connected to the rear longitudinal beam 411 and the rear backrest lower cross beam 482.

[0199] That is to say, the rear surface forms a connection relationship with the main skeleton of the rear frame 40, namely the rear backrest lower cross beam 482 and the rear longitudinal beam 411. Specifically, the rear surface forms a sealed connection with the rear longitudinal beam 411 and the rear backrest lower cross beam 482.

[0200] Specifically, see Figure 4 , the rear longitudinal beam 411 includes a connected connecting part and a rear longitudinal beam body, the rear longitudinal beam body is connected to the sill beam 244 through the connecting part; the rear backrest lower cross beam 482 is connected to the connecting part.

[0201] Further, see Figure 4 andFigure 5 The connecting part includes a first connecting part 1, a second connecting part 2, and a third connecting part 3 that are spaced apart in the vehicle width direction; the first connecting part 1 and the second connecting part 2 are connected to the lower cross beam 482 of the backrest, and the third connecting part 3 is connected to the sill beam 244.

[0202] See Figure 5 In the projection in the vehicle front-rear direction, the first connecting part 1, the second connecting part 2, and the lower cross beam 482 of the backrest at least partially overlap, and the third connecting part 3 and the sill beam 244 at least partially overlap.

[0203] See Figure 4 Regarding the connection between the rear longitudinal beam 411 and the rear wheel housing 451, due to the structural forms of aluminum profiles and cast aluminum parts, various connection forms can be used for connection. For example, the connection forms include the combined form of FDS and structural adhesive, bolt connection, and the combined method of SPR and structural adhesive. The connection method is flexible and can be specifically selected according to needs, and this application embodiment does not limit this.

[0204] It should be noted that when designing the overlap between the rear longitudinal beam 411 and the rear wheel housing 451, the Z-direction dimensional tolerance needs to be considered. Therefore, there is a gap of 3 mm to 5 mm between the upper surface of the rear longitudinal beam 411 in the Z direction and the rear wheel housing 451 to ensure the adjustable space of the cast aluminum wheel housing in the Z direction.

[0205] Among them, the rear longitudinal beam 411 and the rear longitudinal beam assembly connected to the front end are connected by a connection method such as metal inert gas welding (MIG welding). Between the rear longitudinal beam assemblies, a lower cross beam 482 of the backrest is arranged and can be connected by the combined method of FDS and structural adhesive, for example.

[0206] The vehicle provided by the embodiment of this application can be various forms of automobiles, especially electric sports cars, and this application does not limit this.

[0207] Although some specific embodiments of this application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of this application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A vehicle, characterized in that, comprising: a cockpit (20), the cockpit (20) being formed as an occupant compartment, and the cockpit (20) being formed with a mounting portion; a body frame, the mounting portion being connected to the body frame; wherein, a projection of the mounting portion in the vehicle front-rear direction and a projection of the body frame in the vehicle front-rear direction overlap at least partially; and / or; a projection of the mounting portion in the vehicle left-right direction and a projection of the body frame in the vehicle left-right direction overlap at least partially.

2. The vehicle according to claim 1, characterized in that, the mounting portion is sealingly connected to the body frame.

3. The vehicle according to claim 1, characterized in that, the body frame includes a front longitudinal beam (141), a sill beam (244), and a rear longitudinal beam (411) that are sequentially connected from the front of the vehicle to the rear of the vehicle.

4. The vehicle according to claim 1, characterized in that, the cockpit (20) includes a front panel (201), and the mounting portion is formed on the front panel (201).

5. The vehicle according to claim 4, characterized in that, the cockpit (20) further includes side panels (241), the mounting portion is formed on the front panel (201) and the side panels (241), and the mounting portion is respectively connected to the front longitudinal beam (141) and the sill beam (244) of the body frame.

6. The vehicle according to claim 1, characterized in that, at least part of the mounting portion is made of carbon fiber material.

7. The vehicle according to claim 1, characterized in that, the body frame is made of metal material.

8. The vehicle according to claim 1, characterized in that, in the height direction of the body frame, a connection surface of the body frame for connecting to the mounting portion is provided as an inclined surface.

9. The vehicle according to claim 8, characterized in that, the inclination direction of the inclined surface faces the cockpit (20).

10. The vehicle according to claim 1, characterized in that, the mounting portion includes a front profile, a middle profile, and a rear profile; the body frame includes a front frame (10), a middle frame (30), and a rear frame (40); the front frame (10) is connected to the front profile, the middle frame (30) is connected to the middle profile, and the rear frame (40) is connected to the rear profile.

11. The vehicle according to claim 10, characterized in that, the front frame (10) includes a first cross beam (167) and front longitudinal beams (141) that are spaced apart in the vehicle width direction, and both ends of the first cross beam (167) are connected to the front longitudinal beams (141).

12. The vehicle according to claim 11, characterized in that, the front profile is connected to the first cross beam (167).

13. The vehicle according to claim 11, characterized in that, the front frame (10) includes a lower front cross beam (168), and both ends of the lower front cross beam (168) are connected to the front longitudinal beams (141).

14. The vehicle according to claim 13, characterized in that, The front surface is connected to the lower front cross member (168).

15. The vehicle according to claim 13, wherein, the first cross member (167) is connected to the lower front cross member (168), and at least a part of the first cross member (167) is located above the lower front cross member (168) in the height direction of the vehicle body frame.

16. The vehicle according to claim 13, wherein, the front longitudinal beam (141) includes a longitudinal beam body and a longitudinal beam integrated member provided at the tail end of the longitudinal beam body, and both ends of the first cross member (167) are connected to the longitudinal beam integrated member; the front surface is connected to the longitudinal beam integrated member.

17. The vehicle according to claim 16, wherein, the projection of the front surface on the vehicle front-rear direction overlaps at least partially with the longitudinal beam integrated member and the first cross member (167); and / or; the projection of the front surface on the vehicle height direction overlaps at least partially with the lower front cross member (168).

18. The vehicle according to any one of claims 10-17, wherein, the front surface includes a front wall panel (201); or; the front surface includes a front wall panel (201) and at least a part of the floor (211).

19. The vehicle according to claim 11, wherein, the front frame (10) includes a front anti-collision beam (111) and a front energy-absorbing box (113); one end of the front energy-absorbing box (113) is connected to the front anti-collision beam (111), and the other end is connected to the front longitudinal beam (141).

20. The vehicle according to claim 19, wherein, an installation column (131) is provided at the end of the front energy-absorbing box (113) connected to the front longitudinal beam (141), and the front energy-absorbing box (113) is connected to the front longitudinal beam (141) through the installation column (131).

21. The vehicle according to claim 20, wherein, the front frame (10) further includes an upper side beam (114), one end of the upper side beam (114) is connected to the installation column (131), and the other end is connected to the cockpit (20).

22. The vehicle according to claim 16, wherein, the longitudinal beam integrated member includes a front longitudinal beam inner connecting beam (170) facing inwards, and both ends of the first cross member (167) are connected to the two front longitudinal beam inner connecting beams (170).

23. The vehicle according to claim 13, wherein, the middle frame (30) includes sill beams (244) arranged at intervals in the vehicle left-right direction, the front side of the sill beam (244) is connected to the front longitudinal beam (141), and the sill beam (244) is connected to the middle surface.

24. The vehicle according to claim 23, wherein, the front longitudinal beam (141) includes a longitudinal beam body and a longitudinal beam integrated member provided at the tail end of the longitudinal beam body, and the longitudinal beam integrated member includes a front longitudinal beam outer connecting beam (169); the sill beam (244) is connected to the front longitudinal beam outer connecting beam (169); The projection of the sill beam (244) in the vehicle's left - right direction overlaps at least partially with the projection of the outer connecting beam (169) of the front longitudinal beam in the vehicle's left - right direction.

25. The vehicle according to claim 23, wherein, the middle profile is located on the upper side of at least part of the outer connecting beam (169) of the front longitudinal beam; at least part of the middle profile is connected to at least part of the outer connecting beam (169) of the front longitudinal beam in the vehicle's front - rear direction.

26. The vehicle according to claim 25, wherein, at least part of the middle profile is connected to at least part of the outer connecting beam (169) of the front longitudinal beam in the height direction.

27. The vehicle according to claim 23, wherein, the middle frame includes a seat - mounting longitudinal beam (224), and the seat - mounting longitudinal beam (224) and the sill beam (244) are connected to the outer connecting beam (169) of the front longitudinal beam.

28. The vehicle according to claim 27, wherein, the seat - mounting longitudinal beam (224) is arranged between the sill beam (244) and the outer connecting beam (169) of the front longitudinal beam.

29. The vehicle according to claim 28, wherein, an inclined connecting surface is provided on the sill beam (244) and / or the seat - mounting longitudinal beam (224).

30. The vehicle according to claim 27, wherein, the sill beam (244) is provided with an inclined connecting surface; and / or, the seat - mounting longitudinal beam (224) is provided with an inclined connecting surface.

31. The vehicle according to claim 30, wherein, in the vehicle width direction, the two surfaces on both sides of the top surface of the sill beam (244) are set as inclined connecting surfaces.

32. The vehicle according to claim 27, wherein, the middle frame (30) includes a front seat cross - beam (214), and both ends of the front seat cross - beam (214) are connected to the seat - mounting longitudinal beam (224).

33. The vehicle according to claim 32, wherein, the middle frame includes a floor middle cross - beam (215), and both ends of the floor middle cross - beam (215) are connected to the sill beam (244); in the vehicle front - rear direction, the front side of the floor middle cross - beam (215) is connected to the seat - mounting longitudinal beam (224).

34. The vehicle according to claim 33, wherein, the middle frame (30) further includes a central tunnel (213), and the central tunnel (213) is fixedly connected to the front seat cross - beam (214), the floor middle cross - beam (215), and the lower front cross - beam (168).

35. The vehicle according to claim 34, wherein, the middle profile is respectively connected to the central tunnel (213), the front seat cross - beam (214), the seat - mounting longitudinal beam (224), and the sill beam (244).

36. The vehicle according to claim 10, wherein, The rear frame (40) includes a lower rear backrest cross member (482) and rear longitudinal beams (411) spaced apart in the vehicle width direction, and both ends of the lower rear backrest cross member (482) are respectively connected to the rear longitudinal beams (411).

37. The vehicle according to claim 36, wherein, the rear profile is connected to the rear longitudinal beam (411) and the lower rear backrest cross member (482).

38. The vehicle according to claim 36 or 37, wherein, the rear longitudinal beam (411) includes a connecting portion and a rear longitudinal beam body connected to each other, and the rear longitudinal beam body is connected to the sill beam (244) through the connecting portion; the lower rear backrest cross member (482) is connected to the connecting portion.

39. The vehicle according to claim 38, wherein, the connecting portion includes a first connecting portion (1), a second connecting portion (2), and a third connecting portion (3) spaced apart in the vehicle width direction; the first connecting portion (1), the second connecting portion (2) are connected to the lower rear backrest cross member (482), and the third connecting portion (3) is connected to the sill beam (244).

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