Chassis and vehicle

Abstract

The utility model discloses a chassis and a vehicle. The vehicle comprises a chassis, an upper vehicle body and a connecting piece. The chassis includes a lower body and a stiffener. The reinforcer is arranged on the lower vehicle body. The reinforcing piece is provided with a first hole, the upper vehicle body and the lower vehicle body are detachably connected through the connecting piece, and at least part of the connecting piece is inserted into the first hole. The reinforcer can enhance the strength of the part, close to the connecting piece, of the lower vehicle body, reduce deformation of the lower vehicle body under the acting force of the connecting piece, and improve the reliability of the vehicle.

Description

Technical Field

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

[0002] With the rapid development of automation and intelligence, new energy vehicles are becoming more and more popular and popular among the public. How to improve the reliability of vehicles is a research direction in vehicle technology. Utility Model Content

[0003] The present application provides a chassis and a vehicle, which can improve the reliability of the vehicle.

[0004] In a first aspect, the present application provides a chassis, which includes a lower body and a reinforcement. The reinforcement is arranged on the lower body. The reinforcement has a first hole, and the first hole is used for inserting a connector connecting the lower body and the upper body of the vehicle. The reinforcement can improve the strength of the lower body near the connector, reduce the deformation of the lower body under the force of the connector, and improve the reliability of the vehicle.

[0005] In some embodiments, the first hole passes through the reinforcement member along the height direction of the chassis. The reinforcement member can not only guide the connector to be assembled along the height direction, but also play a supporting role to reduce the deformation of the lower body under the pressure of the connector.

[0006] In some embodiments, the lower body includes a rear longitudinal beam, the reinforcement includes a first reinforcement, and at least a portion of the first reinforcement is embedded in the rear longitudinal beam. The first reinforcement can improve the structural strength of the rear longitudinal beam and reduce deformation of the rear longitudinal beam when the connecting member is installed.

[0007] In some embodiments, the first reinforcement member includes a first cylinder and a first flange disposed around the first cylinder, and the first hole passes through the first cylinder. At least a portion of the first cylinder is embedded in the rear longitudinal beam, and the first flange is located at the lower side of the rear longitudinal beam and abuts against the rear longitudinal beam. The first flange can play a limiting role, thereby reducing the risk of over-embedding of the first cylinder.

[0008] In some embodiments, the lower body includes a front longitudinal beam, and the reinforcement includes a second reinforcement fixed to the front longitudinal beam. The second reinforcement can improve the structural strength of the front longitudinal beam, reduce the deformation of the front longitudinal beam when the connecting member is installed, and improve the stability and reliability of the vehicle.

[0009] In some embodiments, the front longitudinal beam includes a first plate and a second plate, the second plate being located at the lower side of the first plate. One end of the second reinforcement member abuts against and is fixed to the first plate, and the other end of the second reinforcement member passes through and is fixed to the second plate. The second reinforcement member can connect the first plate and the second plate, thereby improving the overall structural strength of the front longitudinal beam.

[0010] In some embodiments, the lower vehicle body includes a rear torsion beam. The reinforcement member includes a third reinforcement member fixed to the rear torsion beam, and the hole wall of the first hole of the third reinforcement member is provided with a thread. The third reinforcement member can improve the strength of the rear torsion beam, reduce the deformation of the rear torsion beam when the connecting member is installed, and improve the reliability of the vehicle. The thread of the third reinforcement member can be used for threaded connection with the connecting member.

[0011] In some embodiments, the hardness of the third reinforcement is higher than that of the rear torsion beam. Compared with the rear torsion beam, the third reinforcement has a higher hardness, and the third reinforcement is less worn during repeated disassembly and assembly of the connecting member, thereby improving the repeated disassembly and assembly performance and reducing the requirement for the threaded engagement length of the third reinforcement and the connecting member.

[0012] In some embodiments, the rear torsion beam has a mounting hole extending in the height direction of the chassis, and at least a portion of the third reinforcement is inserted into the mounting hole and is threadedly connected to the rear torsion beam. In the height direction, the third reinforcement is spaced apart from the bottom wall of the mounting hole. Spaced apart from the bottom wall of the mounting hole, the risk of interference between the third reinforcement and the bottom wall of the mounting hole can be reduced, and the size of the third reinforcement can be reduced.

[0013] In some embodiments, the chassis further includes a battery disposed on the lower body. The battery is installed on the lower body so that the lower body can also be used as a battery box, thereby reducing some redundant structures of traditional batteries, increasing the vehicle's cruising range, and achieving the effect of reducing weight and cost.

[0014] In a second aspect, an embodiment of the present application provides a vehicle, comprising a chassis, an upper body, and a connecting member provided in any embodiment of the first aspect. The upper body and the lower body are detachably connected by the connecting member, and at least a portion of the connecting member is inserted into the first hole.

[0015] In some embodiments, the lower body includes a rear longitudinal beam, the upper body includes a rear floor and a first fastener fixed to the rear floor, and the rear floor and the rear longitudinal beam are arranged along the height direction of the chassis. The reinforcement includes a first reinforcement, at least a portion of which is embedded in the rear longitudinal beam; and the connecting member includes a first connecting member, which passes through the first reinforcement and is connected to the first fastener.

[0016] By embedding the first reinforcement member in the rear longitudinal beam, the risk of the rear longitudinal beam being dented due to insufficient rigidity when the first connecting member is installed can be reduced, thereby improving the stability and reliability of the connection between the rear longitudinal beam and the rear floor.

[0017] In some embodiments, the upper body includes a front arm beam, the lower body includes a front longitudinal beam, the upper body includes a support member arranged in the front arm beam, the reinforcement member includes a second reinforcement member fixed to the front longitudinal beam, the support member and the second reinforcement member are arranged along the height direction of the chassis, and the connecting member includes a second connecting member, the second connecting member passes through the support member and is threadedly connected to the second reinforcement member.

[0018] By providing the support member and the second reinforcement member, the deformation of the front arm beam and the front longitudinal beam can be reduced when the second connecting member is installed, the connection strength of the front arm beam and the front longitudinal beam can be increased, and the stability and reliability of the vehicle can be improved.

[0019] In some embodiments, the front arm beam includes a third plate and a fourth plate, and the fourth plate is located on a side of the third plate away from the front longitudinal beam. The support member is located between the third plate and the fourth plate, and the second connecting member passes through the third plate, the support member and the fourth plate. The support member can support the fourth plate, thereby reducing the risk of the fourth plate collapsing when the second connecting member is installed, thereby improving reliability.

[0020] In some embodiments, the lower body includes a rear torsion beam, and the upper body includes a rear floor. The reinforcement includes a third reinforcement fixed to the rear torsion beam, and the connecting member includes a third connecting member, and the third connecting member passes through the rear floor and is threadedly connected to the third reinforcement. The rear torsion beam can be connected to the third connecting member through the third reinforcement, which can reduce the direct force on the rear torsion beam, reduce the risk of deformation of the rear torsion beam when installing the third connecting member, and improve the stability and reliability of the connection between the rear torsion beam and the rear floor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0022] Figure 1 An exploded schematic diagram of a vehicle provided for some embodiments of the present application;

[0023] Figure 2 A partial cross-sectional schematic diagram of a vehicle provided for some embodiments of the application;

[0024] Figure 3 Another partial cross-sectional schematic diagram of a vehicle provided for some embodiments of the application;

[0025] Figure 4 Another partial cross-sectional schematic diagram of a vehicle provided for some embodiments of the application;

[0026] Figure 5 for Figure 4 Enlarged schematic diagram at the box.

[0027] The following are the descriptions of the reference numerals:

[0028] 1. Upper body; 11. Rear floor; 12. First fastener; 13. Front arm beam; 131. Third plate; 132. Fourth plate; 14. Support member; 141. Second hole;

[0029] 2. lower body; 21. rear longitudinal beam; 22. front longitudinal beam; 221. first plate; 222. second plate; 23. rear torsion beam; 231. mounting hole; 231a. bottom wall;

[0030] 3. Connecting piece; 3a. First connecting piece; 3b. Second connecting piece; 3c. Third connecting piece;

[0031] 4. reinforcement member; 41. first hole; 42. first cylinder; 43. first flange; 44. second cylinder; 45. second flange; 4a. first reinforcement member; 4b. second reinforcement member; 4c. third reinforcement member;

[0032] 5. Chassis;

[0033] 6. Battery;

[0034] Z, height direction. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0037] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0040] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0041] The term "plurality" used in the present application refers to two or more (including two).

[0042] Usually, the upper and lower bodies of a vehicle are first connected as one, and then assembled with the battery, electric drive and other structures. However, it is difficult to decouple the upper and lower bodies after they are connected, which limits the structure of the upper and lower bodies during R&D and design, making it difficult to change the upper body, resulting in a long R&D cycle.

[0043] In the related art, the upper body and the lower body can be detachably connected by setting connecting parts, thereby realizing separation and decoupling of the upper body and the lower body, so that the upper body and the lower body can be replaced according to needs, shortening the R&D cycle and reducing costs.

[0044] However, the upper body and the lower body need to be connected by connecting parts, and the lower body will be subjected to the force from the connecting parts. If the connecting parts are set in the part of the lower body with less strength, the lower body will be easily deformed under the force of the connecting parts, thereby affecting the reliability of the vehicle.

[0045] In view of this, an embodiment of the present application provides a technical solution, which increases the strength of the lower vehicle body at the connecting piece, reduces the risk of deformation, and improves the reliability of the vehicle by providing a connecting piece on the lower vehicle body.

[0046] The technical solution described in the embodiments of the present application is applicable to vehicles. The vehicle may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle.

[0047] Figure 1 An exploded schematic diagram of a vehicle provided for some embodiments of the present application; Figure 2 A partial cross-sectional schematic diagram of a vehicle provided for some embodiments of the application; Figure 3 Another partial cross-sectional schematic diagram of a vehicle provided for some embodiments of the application; Figure 4 Another partial cross-sectional schematic diagram of a vehicle provided for some embodiments of the application; Figure 5 for Figure 4 Enlarged schematic diagram at the box.

[0048] Reference Figures 1 to 5 The vehicle of the embodiment of the present application includes a chassis 5 and an upper body 1. The chassis 5 is connected to the upper body 1.

[0049] In some embodiments, the chassis 5 includes an undercarriage 2 .

[0050] In some embodiments, the vehicle includes a connector 3, and the upper body 1 and the lower body 2 are detachably connected through the connector 3. By disassembling and assembling the connector 3, the upper body 1 and the lower body 2 can be separated, decoupled, and connected, thereby realizing the independent development of the upper body 1 and the chassis 5, so that the upper body 1 and the chassis 5 can be replaced according to needs, shortening the research and development cycle and reducing costs.

[0051] One chassis 5 can match upper bodies 1 of different shapes to meet users' demands for diversified shapes.

[0052] The type of the connector 3 can be flexibly selected as needed. In some examples, the connector 3 may include a fastener; alternatively, the fastener may include at least one of a bolt, a nut, a stud, a screw, and a pin. In other examples, the connector 3 may include a buckle.

[0053] The connecting member 3 may be one or more.

[0054] In some examples, there are multiple connectors 3. Multiple connectors 3 can be the same type of components, for example, multiple connectors 3 are bolts. Alternatively, multiple connectors 3 can also be multiple components, for example, some connectors 3 are bolts, and some connectors 3 are screws.

[0055] The upper body 1 and the lower body 2 are detachably connected via a connector 3. By disassembling and assembling the connector 3, the upper body 1 and the lower body 2 can be separated, decoupled and connected, thereby realizing independent development of the upper body 1 and the lower body 2, so that the upper body 1 and the lower body 2 can be replaced as needed, shortening the R&D cycle and reducing costs.

[0056] A lower vehicle body 2 can be matched with upper vehicle bodies 1 of different shapes to meet the user's demand for diversified shapes.

[0057] In some embodiments, the chassis 5 includes a lower body 2 and a reinforcement 4, and the reinforcement 4 is disposed on the lower body 2. The reinforcement 4 has a first hole 41, and the first hole 41 is used for inserting a connector 3 connecting the lower body 2 and the upper body 1 of the vehicle.

[0058] Exemplarily, at least a portion of the connecting member 3 is inserted into the first hole 41 .

[0059] The reinforcement member 4 may be one or more.

[0060] Optionally, there are multiple connectors 3. In some examples, each connector 3 is correspondingly inserted with a reinforcement 4. In other examples, a portion of connectors 3 is correspondingly inserted with a reinforcement 4, and another portion of connectors 3 is not correspondingly provided with a reinforcement 4; for example, when the connector 3 connects to an area with higher strength, the outer periphery of the connector 3 may not be provided with a reinforcement 4.

[0061] One connecting member 3 can be inserted into the first hole 41 of one reinforcing member 4, or can simultaneously surround the first holes 41 of multiple reinforcing members 4. For example, the connecting member 3 passes through the first holes 41 of multiple reinforcing members 4 at the same time.

[0062] The connecting member 3 can be in contact with and connected to the reinforcing member 4 , or can be spaced apart from the reinforcing member 4 .

[0063] The first hole 41 may be a through hole or a blind hole.

[0064] Exemplarily, the first hole 41 may be a smooth hole or a threaded hole.

[0065] The reinforcement member 4 can improve the strength of the portion of the lower vehicle body 2 close to the connecting member 3, reduce the deformation of the lower vehicle body 2 under the force of the connecting member 3, and improve the reliability of the vehicle.

[0066] In some embodiments, there may be multiple connectors 3. The positions of the multiple connectors 3 may be set according to the requirements of the upper body 1 and the lower body 2 for the connection strength.

[0067] In some embodiments, the connecting member 3 comprises a bolt. Exemplarily, there are a plurality of connecting members 3, and at least some of the plurality of connecting members 3 are bolts.

[0068] The bolt can be threadedly connected to the upper body 1 or the lower body 2 .

[0069] The bolts are highly standardized and easy to replace. The bolt connection method is easy to disassemble and assemble, which helps to improve the assembly efficiency of the upper body 1 and the lower body 2.

[0070] Compared with the upper body 1 and the lower body 2 connected by welding, rotary tapping riveting (FDS), self-piercing riveting (SPR), bonding and other processes, the upper body 1 and the lower body 2 are connected by bolts, which can achieve the decoupling of the physical structures of the upper body 1 and the lower body 2.

[0071] In some embodiments, the connector 3 is inserted into the upper body 1 and the lower body 2 along the height direction Z of the chassis 5. The height direction Z of the chassis 5 may be parallel to the height direction of the vehicle, and the height direction of the vehicle may be the height direction of the vehicle in a driving state.

[0072] Exemplarily, the connector 3 can be inserted into the lower body 2 and the upper body 1 from bottom to top to connect the lower body 2 and the upper body 1. The connector 3 can also be inserted into the upper body 1 and the lower body 2 from top to bottom to connect the lower body 2 and the upper body 1.

[0073] The connecting member 3 can be assembled and disassembled in the height direction Z, which helps to simplify the assembly process of the vehicle and reduce the difficulty of subsequent maintenance.

[0074] In some embodiments, the first hole 41 passes through the reinforcement member 4 along the height direction Z of the chassis 5. Exemplarily, the connection member 3 is inserted into the first hole 41 along the height direction Z.

[0075] The reinforcement member 4 can not only guide the connection member 3 to be assembled along the height direction Z, but also play a supporting role to reduce the deformation of the lower vehicle body 2 under the pressure of the connection member 3 .

[0076] In some embodiments, there are multiple reinforcement members 4 .

[0077] Reference Figure 1 and Figure 2 In some embodiments, the lower vehicle body 2 includes a rear longitudinal beam 21. Exemplarily, the rear longitudinal beam 21 can be used to install a rear suspension of the chassis 5.

[0078] The rear longitudinal beam 21 can collapse and absorb energy when a serious collision occurs, thereby protecting the lives of passengers in the vehicle.

[0079] In some embodiments, the reinforcement member 4 includes a first reinforcement member 4a, at least a portion of which is embedded in the rear longitudinal beam 21. The first reinforcement member 4a can improve the structural strength of the rear longitudinal beam 21.

[0080] In some embodiments, the upper vehicle body 1 includes a rear floor 11 , and the rear floor 11 and the rear longitudinal beam 21 are arranged along the height direction Z of the chassis 5 .

[0081] Exemplarily, the rear floor 11 is located on an upper side of the rear longitudinal beam 21 and connected to the rear longitudinal beam 21 .

[0082] In some embodiments, the upper vehicle body 1 includes a first fastener 12 fixed to the rear floor 11 , and the connecting member 3 includes a first connecting member 3 a , which passes through the first reinforcement member 4 a and is connected to the first fastener 12 .

[0083] By embedding the first reinforcement 4 a in the rear longitudinal beam 21 , the risk of the rear longitudinal beam 21 sinking due to insufficient rigidity when installing the first connecting member 3 a can be reduced, thereby improving the stability and reliability of the connection between the rear longitudinal beam 21 and the rear floor 11 .

[0084] In some embodiments, the first connecting member 3 a may be assembled to the lower vehicle body 2 and the upper vehicle body 1 from bottom to top.

[0085] In some embodiments, the first reinforcement member 4a includes a first cylinder 42 and a first flange 43 disposed around the first cylinder 42, and the first hole 41 passes through the first cylinder 42. At least a portion of the first cylinder 42 is embedded in the rear longitudinal beam 21, and the first flange 43 is located at the lower side of the rear longitudinal beam 21 and abuts against the rear longitudinal beam 21. The first flange 43 can play a limiting role, thereby reducing the risk of over-embedding of the first cylinder 42.

[0086] In some embodiments, the first flange 43 is connected to the lower end of the first cylinder 42 .

[0087] Exemplarily, the first barrel 42 is a cylinder.

[0088] The first connecting member 3a includes a bolt, which passes through the first cylinder 42 and is threadedly connected to the first fastener 12. Exemplarily, the head of the bolt is pressed against the first cylinder 42 and the first flange 43.

[0089] In some embodiments, the material of the first reinforcement 4 a is the same as that of the rear longitudinal beam 21 , and there is a risk of electrochemical corrosion at the connection between the first reinforcement 4 a and the rear longitudinal beam 21 .

[0090] In some embodiments, the rear longitudinal beam 21 is made of aluminum alloy.

[0091] In some embodiments, the first reinforcement member 4a may be an aluminum alloy sleeve.

[0092] In some embodiments, the first fastener 12 is welded to the rear floor panel 11 .

[0093] In some embodiments, the first fastener 12 comprises a nut. Alternatively, the nut may comprise a hexagonal flange nut.

[0094] In some embodiments, the upper vehicle body 1 includes a seat mounting structure further disposed on the rear floor 11, standard parts disposed on the rear floor 11, and other components disposed on the rear floor 11. The rear floor 11 may carry seats or other components.

[0095] Reference Figure 1 and Figure 3 In some embodiments, the upper vehicle body 1 includes a front arm beam 13. Exemplarily, the front arm beam 13 can provide support for some components of the vehicle, such as lamps.

[0096] The embodiment of the present application integrates the front arm beam 13 originally belonging to the lower vehicle body 2 into the upper vehicle body 1 , which can simplify the structure of the lower vehicle body 2 and facilitate the installation of structures such as a battery system and a drive system on the lower vehicle body 2 .

[0097] In some embodiments, the front arm beam 13 is disposed at a front end of the upper vehicle body 1 close to the front of the vehicle.

[0098] In some embodiments, the lower vehicle body 2 includes a front longitudinal beam 22. For example, the front longitudinal beam 22 can be used to install a front suspension of the chassis.

[0099] The front longitudinal beam 22 can collapse and absorb energy when a serious collision occurs, thereby protecting the lives of passengers in the vehicle.

[0100] In some embodiments, the reinforcement 4 includes a second reinforcement 4b fixed to the front longitudinal beam 22. The second reinforcement 4b can improve the structural strength of the front longitudinal beam 22, reduce the deformation of the front longitudinal beam 22 when the connector is installed, and improve the stability and reliability of the vehicle.

[0101] In some embodiments, the upper body 1 includes a support member 14 disposed in the front arm beam 13, and the support member 14 and the second reinforcement member 4b are disposed along the height direction Z of the chassis 5. The connecting member 3 includes a second connecting member 3b, which passes through the support member 14 and is threadedly connected to the second reinforcement member 4b.

[0102] By providing the support member 14 and the second reinforcement member 4b, when installing the second connecting member 3b, the deformation of the front arm beam 13 and the front longitudinal beam 22 can be reduced, the connection strength of the front arm beam 13 and the front longitudinal beam 22 can be increased, and the stability and reliability of the vehicle can be improved.

[0103] In some embodiments, the second connecting member 3b is inserted into the supporting member 14 and the second reinforcing member 4b sequentially from top to bottom.

[0104] In some embodiments, the front longitudinal beam 22 includes a first plate 221 and a second plate 222, and the second plate 222 is located at the lower side of the first plate 221. One end of the second reinforcement 4b abuts against and is fixed to the first plate 221, and the other end of the second reinforcement 4b passes through and is fixed to the second plate 222. The second reinforcement 4b can connect the first plate 221 and the second plate 222, thereby improving the overall structural strength of the front longitudinal beam 22.

[0105] In some embodiments, the front arm beam 13 includes a third plate 131 and a fourth plate 132, wherein the fourth plate 132 is located on a side of the third plate 131 away from the front longitudinal beam 22. The support member 14 is located between the third plate 131 and the fourth plate 132, and the second connecting member 3b passes through the third plate 131, the support member 14 and the fourth plate 132.

[0106] The support member 14 can support the fourth plate 132, thereby reducing the risk of the fourth plate 132 collapsing when the second connecting member 3b is installed, thereby improving reliability.

[0107] In some embodiments, the second connecting member 3 b includes a bolt, the head of the bolt is pressed on the fourth plate 132 , and the support member 14 supports the head of the bolt through the fourth plate 132 .

[0108] In some embodiments, two ends of the support member 14 are welded to the third plate 131 and the fourth plate 132 respectively.

[0109] In some embodiments, the support member 14 is provided with a second hole 141, and the second connecting member 3b passes through the second hole 141. Optionally, the second hole 141 is a light hole.

[0110] In some embodiments, support 14 comprises a sleeve.

[0111] In some embodiments, the second connecting member 3b passes through the first plate 221 and is threadedly connected to the second reinforcing member 4b.

[0112] Exemplarily, the third plate 131 and the first plate 221 are disposed in contact with each other.

[0113] The second reinforcing member 4b is threadedly connected to the second connecting member 3b, and the second reinforcing member 4b can play the role of reinforcement and tightening at the same time.

[0114] In some embodiments, the second reinforcement member 4 b includes a second cylinder 44 and a second flange 45 disposed around the second cylinder 44 , and the second flange 45 is connected to the upper end of the second cylinder 44 .

[0115] The second flange 45 is abutted against and welded to the first plate 221. The second flange 45 is provided to increase the connection strength between the first plate 221 and the second reinforcement member 4b.

[0116] The second cylinder 44 extends downward and passes through the second plate 222 , and the outer periphery of the second cylinder 44 is welded to the second plate 222 .

[0117] In some embodiments, the second reinforcement 4b is provided with a first hole 41. Exemplarily, the hole wall of the first hole 41 of the second reinforcement 4b is provided with a thread. The second reinforcement 4b is threaded, so that the front arm beam 13 and the front longitudinal beam 22 can be connected by bolts.

[0118] In some embodiments, the second barrel 44 is a cylinder.

[0119] In some embodiments, there are two front longitudinal beams 22, two front arm beams 13, and the two front arm beams 13 are respectively connected to the two front longitudinal beams 22. Each front arm beam 13 is provided with a support member 14, and each front longitudinal beam 22 is provided with a second reinforcement member 4b.

[0120] Reference Figure 1 , Figure 4 and Figure 5 In some embodiments, the lower vehicle body 2 includes a rear torsion beam 23. The reinforcement member 4 includes a third reinforcement member 4c fixed to the rear torsion beam 23, and a hole wall of the first hole 41 of the third reinforcement member 4c is provided with a thread.

[0121] The third reinforcement member 4c can improve the strength of the rear torsion beam 23, reduce the deformation of the rear torsion beam 23 when the connecting member 3 is installed, and improve the reliability of the vehicle. The thread of the third reinforcement member 4c can be used for threaded connection with the connecting member 3.

[0122] In some embodiments, the upper vehicle body 1 includes a rear floor 11. The reinforcement 4 includes a third reinforcement 4c fixed to the rear torsion beam 23, and the connector 3 includes a third connector 3c passing through the rear floor 11 and being screwed to the third reinforcement 4c.

[0123] The rear torsion beam 23 can be connected to the third connecting member 3c through the third reinforcement 4c, which can reduce the direct force on the rear torsion beam 23, reduce the risk of deformation of the rear torsion beam 23 when installing the third connecting member 3c, and improve the stability and reliability of the connection between the rear torsion beam 23 and the rear floor 11.

[0124] In some embodiments, the hardness of the third reinforcement member 4 c is higher than the hardness of the rear torsion beam 23 .

[0125] Compared with the rear torsion beam 23, the third reinforcement 4c has a higher hardness and is less worn during repeated disassembly and assembly of the third connecting member 3c, thereby improving the repeated disassembly and assembly performance and reducing the requirement for the threaded engagement length between the third reinforcement 4c and the third connecting member 3c.

[0126] In some embodiments, the material of the rear torsion beam 23 may be aluminum alloy, and the material of the third reinforcement member 4c may be steel. For example, the material of the third reinforcement member 4c may be stainless steel.

[0127] By providing the third reinforcement member 4c, the risk of the internal thread of the aluminum alloy being pulled off due to low strength can be reduced.

[0128] In some embodiments, the third reinforcement member 4c comprises a wire thread insert, which forms internal and external threads.

[0129] The wire thread sleeve has high connection strength, and is resistant to shock, impact and wear, and can disperse stress to protect the threads of the rear torsion beam 23 , thereby extending the service life of the rear torsion beam 23 .

[0130] In some embodiments, the rear torsion beam 23 has a mounting hole 231 extending along the height direction Z of the chassis 5, and at least a portion of the third reinforcement 4c is inserted into the mounting hole 231 and is threadedly connected to the rear torsion beam 23. In the height direction Z, the third reinforcement 4c is spaced apart from the bottom wall 231a of the mounting hole 231.

[0131] The third reinforcing member 4c is spaced apart from the bottom wall 231a of the mounting hole 231, which can reduce the risk of interference between the third reinforcing member 4c and the bottom wall 231a of the mounting hole 231, and can also reduce the size of the third reinforcing member 4c. In addition, the space between the third reinforcing member 4c and the bottom wall 231a of the mounting hole 231 can also provide space for the third connecting member 3c.

[0132] In some embodiments, an internal thread may be processed on the hole wall of the mounting hole 231 before the wire screw sleeve is screwed into the mounting hole 231. The wire screw sleeve may also be fastened to the rear torsion beam 23 by expansion in the mounting hole 231, thereby reducing the risk of the wire screw sleeve rotating when mating with the third connecting member 3c.

[0133] In some embodiments, the chassis 5 further includes a battery 6 disposed on the lower vehicle body 2 .

[0134] The battery 6 may include a plurality of battery cells. A battery cell may be the smallest unit that can independently realize charging and discharging. The battery cell may include a lithium-ion secondary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., which is not limited in the embodiments of the present application. The battery cell may be cylindrical, flat, rectangular or other shapes, etc., which is not limited in the embodiments of the present application. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, cubic square battery cells and soft-pack battery cells, which is not limited in the embodiments of the present application.

[0135] The embodiment of the present application installs the battery 6 on the lower vehicle body 2, so that the lower vehicle body 2 can also be used as a battery box, thereby reducing some redundant structures of traditional batteries, improving the vehicle's cruising range, and achieving the effect of weight reduction and cost reduction.

[0136] In some embodiments, before the upper body 1 and the lower body 2 are assembled, the battery 6 is pre-assembled on the lower body 2 .

[0137] In some embodiments, the chassis 5 may further include a drive system and a chassis system, wherein the chassis system includes a transmission system, a travel system, a steering system, and a brake system. The drive system may include a motor.

[0138] The embodiment of the present application integrates the battery 6 onto the chassis 5 to achieve CTC (Cell to Chassis) battery-chassis integration.

[0139] The embodiment of the present application integrates the battery system, drive system and chassis system together, reduces the number of components, saves space, improves structural efficiency, and significantly reduces vehicle weight and increases battery life.

[0140] The chassis of the embodiment of the present application has high adaptability, improves the matching degree with the whole vehicle, and can be quickly and flexibly mass-produced. The high degree of integration and modularization of the chassis can be cross-platform to adapt to various levels and types of future models. At the same time, it is precisely because of the high degree of integration and modularization that the number of parts and production steps are better simplified, and the battery capacity and driving range are improved while reducing costs.

[0141] By providing an independent lower vehicle body 2, the complete chassis system, battery system and drive system can be integrated on the lower vehicle body 2, so that the entire chassis can be designed and operated independently of the upper vehicle body 1, and the drive part and the passenger compartment of the vehicle can be independently developed and assembled.

[0142] In some embodiments, the vehicle further includes a vehicle interior, a human-computer interaction system, and an entertainment system installed on the upper body 1. In the embodiment of the present application, the vehicle interior, the human-computer interaction system, and the entertainment system can be developed independently of the chassis.

[0143] Reference Figures 1 to 5 The embodiment of the present application provides a vehicle, which includes a chassis 5, an upper body 1 and a plurality of connecting members 3. The chassis 5 includes a lower body 2 and a plurality of reinforcing members 4. The upper body 1 and the lower body 2 are detachably connected by the plurality of connecting members 3.

[0144] The lower body 2 includes a rear longitudinal beam 21, a front longitudinal beam 22 and a rear torsion beam 23. The upper body 1 includes a rear floor 11, a front arm beam 13, a first fastener 12 fixed to the rear floor 11 and a support member 14 fixed to the front arm beam 13.

[0145] The plurality of connecting members 3 include a first connecting member 3a, a second connecting member 3b and a third connecting member 3c. The plurality of reinforcing members 4 include a first reinforcing member 4a, a second reinforcing member 4b and a third reinforcing member 4c.

[0146] At least part of the first reinforcement 4a is embedded in the rear longitudinal beam 21, and the first connecting member 3a passes through the first reinforcement 4a and is connected to the first fastener 12. The support member 14 is fixed to the front arm beam 13, and the second reinforcement 4b is fixed to the front longitudinal beam 22. The support member 14 and the second reinforcement 4b are arranged along the height direction Z of the vehicle; the second connecting member 3b passes through the support member 14 and is screwed to the second reinforcement 4b. The third reinforcement 4c is fixed to the rear torsion beam 23, and the third connecting member 3c passes through the rear floor 11 and is screwed to the third reinforcement 4c.

[0147] Exemplarily, the connecting member 3 is a bolt.

[0148] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A chassis, characterized in that: include: Lower body; A reinforcement member is arranged on the lower vehicle body, and the reinforcement member has a first hole, wherein the first hole is used for inserting a connecting member connecting the lower vehicle body and an upper vehicle body of the vehicle.

2. The chassis according to claim 1, characterized in that: The first hole passes through the reinforcement member along a height direction of the chassis.

3. The chassis according to claim 1, characterized in that: The lower vehicle body includes a rear longitudinal beam, and the reinforcement member includes a first reinforcement member, at least a portion of which is embedded in the rear longitudinal beam.

4. The chassis according to claim 3, characterized in that: The first reinforcement member includes a first cylinder and a first flange arranged around the first cylinder, and the first hole passes through the first cylinder; At least a portion of the first cylinder is embedded in the rear longitudinal beam, and the first flange is located at the lower side of the rear longitudinal beam and abuts against the rear longitudinal beam.

5. The chassis according to claim 1, characterized in that: The lower vehicle body includes a front longitudinal beam, and the reinforcement member includes a second reinforcement member fixed to the front longitudinal beam.

6. The chassis according to claim 5, characterized in that The front longitudinal beam comprises a first plate and a second plate, wherein the second plate is located at a lower side of the first plate; One end of the second reinforcement member abuts against the first plate and is fixed to the first plate, and the other end of the second reinforcement member passes through the second plate and is fixed to the second plate.

7. The chassis according to claim 1, characterized in that: The lower body includes a rear torsion beam; The reinforcement member includes a third reinforcement member fixed to the rear torsion beam, and a hole wall of the first hole of the third reinforcement member is provided with threads.

8. The chassis according to claim 7, characterized in that The third reinforcement has a higher hardness than the rear torsion beam.

9. The chassis according to claim 7, characterized in that: The rear torsion beam has a mounting hole extending in the height direction of the chassis, and at least a portion of the third reinforcement is inserted into the mounting hole and is threadedly connected to the rear torsion beam; In the height direction, the third reinforcement is spaced apart from the bottom wall of the mounting hole.

10. The chassis according to any one of claims 1 to 9, characterized in that: The chassis also includes a battery disposed on the lower vehicle body.

11. A vehicle, characterized in that: include: The chassis according to any one of claims 1 to 10; Upper body; as well as A connecting member, the upper body and the lower body are detachably connected by the connecting member, and at least a portion of the connecting member is inserted into the first hole.

12. The vehicle according to claim 11, characterized in that The lower body includes a rear longitudinal beam, the upper body includes a rear floor and a first fastener fixed to the rear floor, and the rear floor and the rear longitudinal beam are arranged along the height direction of the chassis; The reinforcement member includes a first reinforcement member, at least a portion of which is embedded in the rear longitudinal beam; the connecting member includes a first connecting member, which passes through the first reinforcement member and is connected to the first fastener.

13. The vehicle according to claim 11, characterized in that The upper body includes a front arm beam, and the lower body includes a front longitudinal beam; The upper body includes a support member arranged in the front arm beam, the reinforcement member includes a second reinforcement member fixed to the front longitudinal beam, and the support member and the second reinforcement member are arranged along the height direction of the chassis; The connecting member includes a second connecting member, which passes through the supporting member and is threadedly connected to the second reinforcing member.

14. The vehicle according to claim 13, characterized in that The front arm beam comprises a third plate and a fourth plate, wherein the fourth plate is located on a side of the third plate away from the front longitudinal beam; The supporting member is located between the third plate and the fourth plate, and the second connecting member passes through the third plate, the supporting member and the fourth plate.

15. The vehicle according to any one of claims 11 to 14, characterized in that: The lower body includes a rear torsion beam, and the upper body includes a rear floor; The reinforcement member includes a third reinforcement member fixed to the rear torsion beam, and the connecting member includes a third connecting member that passes through the rear floor and is screwed to the third reinforcement member.

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