CN221273206U - Lower vehicle body and vehicle - Google Patents

Abstract

The application relates to a lower vehicle body and a vehicle, wherein the lower vehicle body comprises a longitudinal beam, a wheel rim assembly and a swing arm assembly; the wheel edge assembly is connected with the longitudinal beam; the swing arm assembly is at least partially mounted to the rail and is connected to the wheel rim assembly. The lower vehicle body comprises a longitudinal beam, a wheel edge assembly and a swing arm assembly, wherein the swing arm assembly is arranged on the longitudinal beam and connected with the wheel edge assembly. The swing arm assembly can be directly arranged on the longitudinal beam, so that the auxiliary frame is omitted, the number of parts of the lower vehicle body and the weight of the lower vehicle body are reduced, the purpose of reducing the weight of the lower vehicle body is achieved, meanwhile, the manufacturing cost of the lower vehicle body can be saved, and the assembly time of the lower vehicle body is saved. In addition, the mounting structure of swing arm assembly is integrated in the longeron, and structural integration can optimize the component design to reduce the holistic occupation space of automobile body down.

Description

Lower vehicle body and vehicle

Technical Field

The application relates to the technical field of vehicle production, in particular to a lower vehicle body and a vehicle.

Background

With the rapid development of the vehicle industry, vehicles have become important travel and transportation tools, and the power of the vehicles is mainly stored in batteries. However, with the continuous upgrading of the functions and structures of the vehicle, the safety of the vehicle is particularly important.

The lower body is an important component of the body structure, but in general, the lower body has high self weight, which is not beneficial to realizing the light weight of the body structure and increasing the endurance mileage of the vehicle.

Disclosure of utility model

The application provides a lower vehicle body and a vehicle, and aims to reduce weight of the lower vehicle body.

In a first aspect, the present disclosure provides a lower body including a longitudinal beam, a wheel rim assembly, and a swing arm assembly; the wheel edge assembly is connected with the longitudinal beam; the swing arm assembly is at least partially mounted to the rail and is connected to the wheel rim assembly. Wherein at least one component of the swing arm assembly may be mounted to the stringer.

The lower vehicle body comprises a longitudinal beam, a wheel edge assembly and a swing arm assembly, wherein the swing arm assembly is arranged on the longitudinal beam and connected with the wheel edge assembly. The swing arm assembly can be directly arranged on the longitudinal beam, so that the auxiliary frame is omitted, the number of parts of the lower vehicle body and the weight of the lower vehicle body are reduced, the purpose of reducing the weight of the lower vehicle body is achieved, meanwhile, the manufacturing cost of the lower vehicle body can be saved, and the assembly time of the lower vehicle body is saved. In addition, the mounting structure of swing arm assembly is integrated in the longeron, and structural integration can optimize the component design to reduce the holistic occupation space of automobile body down.

According to one embodiment of the application, the swing arm assembly includes a stabilizer bar movably connected to the longitudinal beam and the wheel rim assembly.

In these alternative embodiments, provision is made for the stabilizer bar to be supported in a stable manner by the longitudinal beam, the stabilizer bar being able to transmit the load forces to be taken up to the longitudinal beam during use, in order to reduce the deformation of the stabilizer bar.

According to one embodiment of the application, the lower body further comprises a first connecting assembly, and the stabilizer bar is movably connected to the longitudinal beam through the first connecting assembly.

In these alternative embodiments, through setting up first coupling assembling, install the stabilizer bar on the longeron through first coupling assembling, be convenient for realize the installation of stabilizer bar, when needing to change the stabilizer bar, accessible dismantles first coupling assembling, realizes the change of stabilizer bar, need not to change the longeron.

According to one embodiment of the application, the first connecting component comprises a supporting frame and a first connecting piece, the supporting frame is fixed on the longitudinal beam through the first connecting piece, and the stabilizer bar penetrates through the supporting frame and can rotate relative to the supporting frame.

In these alternative embodiments, this arrangement further improves the stable support of the stringers to the stabilizer bar.

According to one embodiment of the application, the swing arm assembly further comprises a first link movably connected to the longitudinal beam and the wheel rim assembly.

In these alternative embodiments, the first link is mounted to the side member to achieve mounting stability of the first link, and the first link may also improve lateral stability of the lower body.

According to one embodiment of the application, the longitudinal beam comprises a beam body and a convex body, the convex body is arranged protruding out of the beam body, the first end of the first connecting rod is movably connected with the convex body, and the second end of the first connecting rod is movably connected with the wheel edge assembly.

In these alternative embodiments, the mounting structure of the first link is integrated on the longitudinal beam, which can increase the structural strength and stability of the first link, and the structural integration can optimize the design of the longitudinal beam, thereby reducing the overall occupation space of the lower vehicle body.

According to one embodiment of the application, the convex body comprises a first sub-convex part and a second sub-convex part, the first sub-convex part and the second sub-convex part are arranged at intervals, and the first end is positioned between the first sub-convex part and the second sub-convex part; the lower vehicle body further comprises a second connecting piece, the second connecting piece penetrates through the first sub-convex part, the first end and the second sub-convex part and is connected with the first sub-convex part, the first end and the second sub-convex part, and the first end rotates relative to the second connecting piece.

In these alternative embodiments, this provides advantages of ease of installation, low manufacturing costs, etc.

According to one embodiment of the application, the swing arm assembly comprises a plurality of first connecting rods which are arranged at intervals along the extending direction of the longitudinal beam.

In these alternative embodiments, the appropriate number of first links may further enhance the lateral stability of the lower body.

According to one embodiment of the application, the lower body further comprises a cross beam connected with the longitudinal beam; the swing arm assembly further comprises a second connecting rod, and the second connecting rod is movably connected to the cross beam and the wheel rim assembly.

In these alternative embodiments, the arrangement is such that the lower body structure is stronger, the first and second links are connected to different beams, planning the interior space of the lower body is advantageous for improving the space utilization of the lower body.

In a second aspect, the application proposes a vehicle comprising a lower body according to the foregoing.

The vehicle provided by the application comprises the lower vehicle body, the swing arm assembly is directly arranged on the longitudinal beam, the auxiliary frame is omitted, the number of parts of the lower vehicle body and the weight of the lower vehicle body are reduced, the integration level of the lower vehicle body is high, the purpose of lightening the lower vehicle body can be achieved, the cost of the lower vehicle body is saved, and the whole occupied space of the vehicle is reduced.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of a lower body structure provided in some embodiments of the present application;

FIG. 2 is a schematic view of a portion of a lower body according to some embodiments of the present application;

Fig. 3 is a schematic view of a connection structure between a cross member and a stabilizer bar of a lower vehicle body according to some embodiments of the present application;

Fig. 4 is a schematic view of a connection structure between a cross member and a first link of a lower vehicle body according to some embodiments of the present application;

the figures are not necessarily to scale.

Reference numerals illustrate:

100. a lower body;

10. A longitudinal beam; 11. a beam body; 12. a convex body; 121. a first sub-protrusion; 122. a second sub-protrusion;

20. a wheel rim assembly;

30. A swing arm assembly; 31. a stabilizer bar; 32. a first link; 321. a first end; 322. a second end; 33. a second link;

40. A first connection assembly; 41. a support frame; 42. a first connector;

50. A second connector;

60. a cross beam;

The vehicle body front-rear direction x.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

The term "and/or" in the present application is merely an association relation describing the association object, and indicates that three kinds of relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In the present application, the character "/" generally indicates that the front and rear related objects are an or relationship.

In the embodiments of the present application, the same reference numerals denote the same components, and detailed descriptions of the same components are omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are merely illustrative and should not be construed as limiting the application in any way.

The term "plurality" as used herein refers to two or more (including two).

Along with the rapid development of vehicles, the weight reduction of the vehicles is more important, and the weight reduction of the whole vehicle has an obvious effect on improving the endurance mileage of new energy vehicles. The lower automobile body is as the important component part of automobile body structure, and in the related art, lower automobile body includes the sub vehicle frame, and swing arm assembly installs on the sub vehicle frame, but the existence of sub vehicle frame has not only taken down the space of automobile body, has still increased the holistic weight of lower automobile body, is unfavorable for the lightweight of lower automobile body. The statements made above merely serve to provide background information related to the present disclosure and may not necessarily constitute prior art.

In view of the above problems, through intensive research, a lower vehicle body is provided, which comprises a longitudinal beam, a wheel rim assembly and a swing arm assembly, wherein the swing arm assembly is mounted on the longitudinal beam and connected with the wheel rim assembly. The swing arm assembly can be directly arranged on the longitudinal beam, so that the auxiliary frame is omitted, the number of parts of the lower vehicle body and the weight of the lower vehicle body are reduced, the purpose of reducing the weight of the lower vehicle body is achieved, meanwhile, the manufacturing cost of the lower vehicle body can be saved, and the assembly time of the lower vehicle body is saved. In addition, the mounting structure of swing arm assembly is integrated in the longeron, and structural integration can optimize the component design to reduce the holistic occupation space of automobile body down.

The lower automobile body can be applied to a vehicle, the vehicle can be a fuel oil automobile, a fuel gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and the like. The embodiment of the application is not particularly limited to the above-described vehicle.

Fig. 1 is a schematic view of a lower vehicle body according to some embodiments of the present application.

As shown in fig. 1, a lower body 100 of the present application, the lower body 100 includes a side member 10, a wheel rim assembly 20, and a swing arm assembly 30. The wheel rim assembly 20 is connected to the longitudinal beam 10. The swing arm assembly 30 is at least partially mounted to the rail 10 and is connected to the wheel rim assembly 20. Wherein at least one component of the swing arm assembly 30 may be mounted to the stringer 10.

The side member 10 is provided in the front-rear direction x of the vehicle body, is one of the key components in the vehicle body, plays an important role in bearing on the vehicle body, and has a generally groove-shaped cross section, and also has a zigzag-shaped or box-shaped cross section.

In the embodiment of the present application, the lower body 100 includes two side members 10, and the two side members 10 are spaced apart. Optionally, the underbody 100 further comprises a cross member disposed between the two longitudinal members 10 and connected to the longitudinal members 10, the longitudinal members 10 and the cross member forming a frame-like structure.

In the embodiment of the present application, the longitudinal beam 10 may be made of various materials, such as steel, aluminum alloy, or other composite materials, and optionally, one of the materials is a carbon fiber composite material, which has advantages of light weight, high strength, and high impact resistance.

Alternatively, the stringers 10 are manufactured using an integral casting process.

It should be noted that, the lower vehicle body 100 includes two wheel assemblies 20, the two wheel assemblies 20 are axisymmetric, the lower vehicle body 100 includes two stringers 10, each wheel assembly 20 is disposed corresponding to each stringer 10 and is located at an outer side of the stringer 10, and the wheel assemblies 20 are connected with the stringers 10.

Alternatively, the wheel rim assembly 20 includes a knuckle bracket to which the rail 10 is attached, and wheels to which the swing arm assembly 30 is attached.

In embodiments of the present application, the swing arm assembly 30 is mounted to the side rail 10, and the swing arm assembly 30 may be directly connected to the side rail 10 for installation. The swing arm assembly 30 includes a stabilizer bar, a link, a swing arm, and the like. In the related art, the swing arm assembly 30 is mounted to the subframe and connected to the rim assembly 20. However, in the lower vehicle body 100 according to the embodiment of the present application, the sub-frame structure is eliminated, and the swing arm assembly 30 mounted on the sub-frame is directly mounted on the side member 10, so that not only is stable mounting of the swing arm assembly 30 realized, but also the sub-frame is saved, and weight reduction of the lower vehicle body 100 is realized.

In some embodiments, the swing arm assembly 30 includes a stabilizer bar, a plurality of links, etc., wherein at least one component of the swing arm assembly 30 may be mounted to the side rail 10, e.g., a stabilizer bar may be mounted to the side rail 10, a portion of the links may be mounted to the side rail 10, etc., and a component of the swing arm assembly 30 may also be mounted to other components of the lower body 100, e.g., another portion of the links may be mounted to a cross member of the lower body 100.

In the embodiment of the present application, the swing arm assembly 30 is connected to the longitudinal beam 10, specifically, the swing arm assembly 30 is connected to the longitudinal beam 10 by one of riveting, clamping, plugging, bolting, or connecting piece connection.

The application provides a lower vehicle body 100, wherein the lower vehicle body 100 comprises a longitudinal beam 10, a wheel rim assembly 20 and a swing arm assembly 30, and the swing arm assembly 30 is arranged on the longitudinal beam 10 and connected with the wheel rim assembly 20. The swing arm assembly 30 can be directly mounted on the longitudinal beam 10, thereby omitting the auxiliary frame, being beneficial to reducing the number of components of the lower vehicle body 100 and the self weight of the lower vehicle body 100, so as to realize the purpose of light weight of the lower vehicle body 100, and simultaneously saving the manufacturing cost of the lower vehicle body 100 and the assembly time of the lower vehicle body 100. In addition, the mounting structure of the swing arm assembly 30 is integrated with the side member 10, and structural integration can optimize the component design to reduce the overall occupation space of the lower body 100.

Referring to fig. 2 in combination, fig. 2 is a schematic view of a portion of a lower vehicle body according to some embodiments of the present application.

According to one embodiment of the present application, as shown in fig. 1 and 2, the swing arm assembly 30 includes a stabilizer bar 31, and the stabilizer bar 31 is movably connected with the side member 10 and the rim assembly 20.

The stabilizer bar 31 is also called a stabilizer bar 31. The stabilizer bar 31 functions to balance the reverse runout of the left and right wheels of the vehicle and reduce the inclination of the vehicle body by an excessive angle when the vehicle turns or the vehicle runs on an uneven road surface.

Specifically, the lower body 100 includes two wheel side assemblies 20 and two side members 10, and each wheel side assembly 20 is provided corresponding to each side member 10 and located outside the side member 10. The stabilizer bar 31 includes a first section and a second section disposed at both ends of the first section, the first section and the second section are integrally disposed, the first section is connected to the two stringers 10 and located between the two stringers 10, and the second section is connected to the wheel assembly 20 and located between the wheel assembly 20 and the stringers 10.

The stabilizer bar 31 is movably connected to the longitudinal beam 10, and specifically, the stabilizer bar 31 is rotatable with respect to the longitudinal beam 10.

Illustratively, the stabilizer bar 31 is connected to the longitudinal beam 10 by means of bearings, which serve to support the stabilizer bar 31 and to realize a rotational connection. The bearings can reduce friction and support the rotation movement of the stabilizer bar 31.

Illustratively, the stabilizer bar 31 is connected to the stringers 10 by a sleeve, which is fixedly connected to the stringers 10, and the stabilizer bar 31 extends through the sleeve and provides a rotational connection.

Optionally, a reinforcing rib is provided at the junction of the stabilizer bar 31 and the longitudinal beam 10. The provision of the reinforcing ribs increases the structural strength of the stringers 10 and reduces stress concentrations.

In these alternative embodiments, provision is made for a stable support of the stabilizer bar 31 by the longitudinal beam 10, which stabilizer bar 31 can transmit the load forces to be taken up to the longitudinal beam 10 during use, in order to reduce the deformations of the stabilizer bar 31.

Referring to fig. 3 in combination, fig. 3 is a schematic view of a connection structure between a cross member and a stabilizer bar of a lower vehicle body according to some embodiments of the present application.

According to an embodiment of the present application, as shown in fig. 1 to 3, the lower body 100 further includes a first link assembly 40, and the stabilizer bar 31 is movably connected to the side member 10 through the first link assembly 40.

In the embodiment of the present application, the stabilizer bar 31 is movably connected with the first connecting component 40, and the first connecting component 40 is connected with the longitudinal beam 10, so that the stabilizer bar 31 is movably connected with the longitudinal beam 10 through the first connecting component 40, that is, the stabilizer bar 31 is movably mounted on the longitudinal beam 10.

Optionally, the first connection assembly 40 is detachably connected to the stringers 10.

In these alternative embodiments, the stabilizer bar 31 is mounted on the longitudinal beam 10 by the first connecting assembly 40, so that the mounting of the stabilizer bar 31 is facilitated, and when the stabilizer bar 31 needs to be replaced, the replacement of the stabilizer bar 31 can be realized by disassembling the first connecting assembly 40, without replacing the whole longitudinal beam 10.

According to an embodiment of the present application, as shown in fig. 1 to 3, the first connection assembly 40 includes a support frame 41 and a first connection member 42, the support frame 41 is fixed to the side member 10 by the first connection member 42, and the stabilizer bar 31 is installed through the support frame 41 and is rotatable relative to the support frame 41.

Specifically, the first connection assembly 40 includes a support frame 41 and at least two first connection members 42. The support frame 41 includes a support body and first and second ends connected to both ends of the support body. The support body is provided with a through hole, and the stabilizer bar 31 penetrates through the through hole and can rotate relative to the support body. The first end portion abuts against the side member 10, and extends along the surface of the side member 10 in a direction away from the support body. Accordingly, the second end portion abuts against the side member 10, and the second end portion extends along the surface of the side member 10 in a direction away from the support body. A first connecting piece 42 is provided on the first end portion, and a first connecting piece 42 is provided on the second end portion, and the support frame 41 is connected to the longitudinal beam 10 through the first connecting piece 42. The arrangement is such that the first connecting assembly 40 has a larger contact area with the longitudinal beam 10, which is beneficial to transmitting the load force born by the stabilizer bar 31 to the longitudinal beam 10.

Illustratively, the first connecting member 42 is a bolt, the first end is provided with a first threaded hole, the longitudinal beam 10 is provided with a second threaded hole, the first threaded hole is disposed opposite the second threaded hole, and the bolt is capable of penetrating the first threaded hole and the second threaded hole. Correspondingly, the second end is provided with a third threaded hole, the longitudinal beam 10 is provided with a fourth threaded hole, the third threaded hole is opposite to the fourth threaded hole, and the bolts penetrate through the third threaded hole and the fourth threaded hole.

In these alternative embodiments, this arrangement further improves the stable support of the stabilizer bar 31 by the stringers 10.

According to an embodiment of the present application, as shown in fig. 1 and 2, the swing arm assembly 30 further includes a first link 32, and the first link 32 is movably connected to the side member 10 and the wheel rim assembly 20.

In an embodiment of the present application, the swing arm assembly 30 further includes a first link 32, the first link 32 being mounted to the side member 10. Specifically, one end of the first link 32 is movably connected to the longitudinal beam 10, and the other end of the first link 32 is movably connected to the wheel rim assembly 20.

In an embodiment of the present application, the number of first links 32 is one or more.

In these alternative embodiments, the first link 32 is mounted to the side member 10 to achieve stable connection of the first link 32, and the first link 32 may also improve the lateral stability of the vehicle body.

Referring to fig. 4 in combination, fig. 4 is a schematic view illustrating a connection structure between a cross member and a first link of a lower vehicle body according to some embodiments of the present application.

According to an embodiment of the present application, as shown in fig. 1, 2 and 4, the longitudinal beam 10 includes a beam body 11 and a protrusion 12, the protrusion 12 protrudes from the beam body 11, a first end 321 of the first link 32 is movably connected to the protrusion 12, and a second end 322 of the first link 32 is movably connected to the wheel rim assembly 20.

In the embodiment of the present application, the side member 10 includes a beam body 11 and a convex body 12. The beam body 11 is provided along the vehicle body front-rear direction x, and is a main load bearing member of the vehicle body. The convex body 12 protrudes from the beam body 11, and the convex body 12 is used for connecting with the first connecting rod 32. The first end 321 of the first link 32 is movably connected to the boss 12, and the second end 322 of the first link 32 is movably connected to the wheel rim assembly 20, such that the first link 32 is movable relative to the side member 10.

In these alternative embodiments, the integration of the mounting structure of the first link 32 on the longitudinal beam 10 may increase the strength and stability of the first link 32, and the structural integration may optimize the design of the longitudinal beam 10, thereby reducing the overall footprint of the vehicle body.

According to one embodiment of the present application, as shown in fig. 1, 2 and 4, the convex body 12 includes a first sub-convex portion 121 and a second sub-convex portion 122, the first sub-convex portion 121 and the second sub-convex portion 122 are spaced apart, and the first end 321 is located between the first sub-convex portion 121 and the second sub-convex portion 122. The lower body 100 further includes a second connecting member 50, where the second connecting member 50 is disposed through the first sub-protrusion 121, the first end 321, and the second sub-protrusion 122, and is connected to the first sub-protrusion 121, the first end 321, and the second sub-protrusion 122, and the first end 321 rotates relative to the second connecting member 50.

Specifically, the convex body 12 includes a first sub-convex portion 121 and a second sub-convex portion 122, the first sub-convex portion 121 and the second sub-convex portion 122 are disposed at intervals, the first sub-convex portion 121 has a first through hole along the extending direction of the longitudinal beam 10, the second sub-convex portion 122 has a second through hole along the extending direction of the longitudinal beam 10, the first end 321 has a third through hole along the extending direction of the longitudinal beam 10, and when the first end 321 is located between the first sub-convex portion 121 and the second sub-convex portion 122, the first through hole, the second through hole and the third through hole are disposed oppositely. The second connection member 50 penetrates the first through hole, the second through hole, and the third through hole, and is connected with the first sub-protrusion 121, the first end 321, and the second sub-protrusion 122. The first link 32 can rotate about the second link 50 as a pivot axis.

Alternatively, the second connector 50 may be a bolt, pin, or other pin.

In these alternative embodiments, this provides advantages of ease of installation, low manufacturing costs, etc.

According to one embodiment of the present application, the swing arm assembly 30 includes a plurality of first links 32, and the plurality of first links 32 are spaced apart along the extension direction of the side member 10.

In the embodiment of the present application, the swing arm assembly 30 includes a plurality of first links 32, each first link 32 is connected to the longitudinal beam 10 and the wheel assembly 20, the plurality of first links 32 are spaced along the extending direction of the longitudinal beam 10, and the arrangement direction of each first link 32 may be different.

Optionally, the swing arm assembly 30 includes 2 to 3 first links 32.

In these alternative embodiments, the appropriate number of first links 32 may further enhance the lateral stability of the lower body 100.

According to one embodiment of the present application, as shown in fig. 1 and 2, the lower body 100 further includes a cross member 60, and the cross member 60 is connected to the side member 10. The swing arm assembly 30 further includes a second link 33, and the second link 33 is movably connected to the cross beam 60 and the wheel rim assembly 20.

Specifically, the lower body 100 includes two cross members 60 and two side members 10, the cross members 60 being located between the two side members 10 and connected to the two side members 10, the two cross members 60 being disposed at intervals in the body front-rear direction x, the two side members 10 being disposed at intervals in the arrangement direction of the two cross members 60.

In the embodiment of the present application, in the case where the two cross members 60 and the two side members 10 are connected, the cross members 60 and the side members 10 may be integrally constructed, and the cross members 60 and the side members 10 may be integrally press-molded or integrally cast. Or the cross beam 60 and the longitudinal beam 10 are in a split structure, the two cross beams 60 and the two longitudinal beams 10 are manufactured independently, and then the two cross beams 60 and the two longitudinal beams 10 are connected.

In the embodiment of the present application, the swing arm assembly 30 further includes a second link 33, one end of the second link 33 is movably connected to the cross beam 60, and the other end of the second link 33 is movably connected to the wheel assembly 20.

Alternatively, the first link 32 is different in structure from the second link 33.

In these alternative embodiments, the arrangement is such that the lower body 100 is structurally strong, the first link 32 and the second link 33 are connected to different beams, the interior space of the lower body 100 is planned, and the space utilization of the lower body 100 is improved.

In a second aspect, the present application proposes a vehicle comprising a lower body 100 according to the foregoing.

The vehicle provided by the application comprises the lower vehicle body 100, the swing arm assembly 30 is directly arranged on the longitudinal beam 10, a subframe is omitted, the number of parts of the lower vehicle body 100 and the weight of the lower vehicle body 100 are reduced, the integration level of the lower vehicle body 100 is high, the purpose of lightening the lower vehicle body 100 can be achieved, the manufacturing cost of the lower vehicle body 100 is saved, and the whole occupied space of the vehicle is reduced.

In some embodiments, the vehicle further includes an upper body that is removably connected to the lower body 100.

In these alternative embodiments, the vehicle includes a lower body 100 and an upper body, where the upper body is detachably connected to the lower body 100, and the lower body 100 has a high integration level, so that the development cost can be reduced, and the development cycle can be shortened; the upper body may be replaced according to the need, in other words, the lower body 100 may be adapted to various vehicle types.

Referring to fig. 1-4, according to some embodiments of the present application, the present application provides a lower body 100, the lower body 100 including a longitudinal beam 10, a cross beam 60, a wheel rim assembly 20, a swing arm assembly 30, a first connection assembly 40, and a second connection member 50. The wheel rim assembly 20 is connected to the longitudinal beam 10. The cross member 60 is connected to the side member 10. The swing arm assembly 30 is at least partially mounted to the rail 10 and is connected to the wheel rim assembly 20. The swing arm assembly 30 includes a stabilizer bar 31, a first link 32, and a second link 33. The stabilizer bar 31 is movably connected with the longitudinal beam 10 and the wheel rim assembly 20. The first connecting assembly 40 includes a supporting frame 41 and a first connecting member 42, wherein the supporting frame 41 is fixed on the longitudinal beam 10 through the first connecting member 42, and the stabilizer bar 31 is inserted through the supporting frame 41 and can rotate relative to the supporting frame 41. The longitudinal beam 10 comprises a beam body 11 and a convex body 12, the convex body 12 protrudes from the beam body 11, the convex body 12 comprises a first sub-convex part 121 and a second sub-convex part 122, the first sub-convex part 121 and the second sub-convex part 122 are arranged at intervals, a first end 321 of the first connecting rod 32 is positioned between the first sub-convex part 121 and the second sub-convex part 122, the second connecting piece 50 penetrates through the first sub-convex part 121, the first end 321 and the second sub-convex part 122 and is connected with the first sub-convex part 121, the first end 321 and the second sub-convex part 122, and the first end 321 rotates relative to the second connecting piece 50. The second end 322 of the first link 32 is movably coupled to the rim assembly 20. The swing arm assembly 30 includes a plurality of first links 32, and the plurality of first links 32 are disposed at intervals along the extending direction of the side member 10. The second link 33 is movably coupled to the cross member 60 and the rim assembly 20.

The application provides a lower vehicle body 100, wherein the lower vehicle body 100 comprises a longitudinal beam 10, a wheel rim assembly 20 and a swing arm assembly 30, and the swing arm assembly 30 is arranged on the longitudinal beam 10 and connected with the wheel rim assembly 20. The swing arm assembly 30 can be directly mounted on the longitudinal beam 10, thereby omitting the auxiliary frame, being beneficial to reducing the number of components of the lower vehicle body 100 and the self weight of the lower vehicle body 100, so as to realize the purpose of light weight of the lower vehicle body 100, and simultaneously saving the manufacturing cost of the lower vehicle body 100 and the assembly time of the lower vehicle body 100. In addition, the mounting structure of the swing arm assembly 30 is integrated with the side member 10, and structural integration can optimize the component design to reduce the overall occupation space of the lower body 100.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application, and in particular, the technical features set forth in the various embodiments may be combined in any manner so long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A lower body, characterized by comprising:

A longitudinal beam;

the wheel edge assembly is connected with the longitudinal beam;

and the swing arm assembly is at least partially installed on the longitudinal beam and is connected with the wheel edge assembly.

2. The underbody as claimed in claim 1, wherein,

The swing arm assembly comprises a stabilizer bar, and the stabilizer bar is movably connected with the longitudinal beam and the wheel rim assembly.

3. The underbody as claimed in claim 2, wherein,

The stabilizer bar is movably connected with the longitudinal beam through the first connecting component.

4. The underbody as claimed in claim 3, wherein,

The first connecting assembly comprises a supporting frame and a first connecting piece, the supporting frame is fixed on the longitudinal beam through the first connecting piece, and the stabilizer bar penetrates through the supporting frame and can rotate relative to the supporting frame.

5. The underbody as claimed in claim 4, wherein,

The swing arm assembly further comprises a first connecting rod, and the first connecting rod is movably connected with the longitudinal beam and the wheel rim assembly.

6. The underbody as claimed in claim 5, wherein,

The longitudinal beam comprises a beam body and a convex body, the convex body protrudes out of the beam body, the first end of the first connecting rod is movably connected with the convex body, and the second end of the first connecting rod is movably connected with the wheel assembly.

7. The underbody as claimed in claim 6, wherein,

The convex body comprises a first sub-convex part and a second sub-convex part, the first sub-convex part and the second sub-convex part are arranged at intervals, and the first end is positioned between the first sub-convex part and the second sub-convex part;

The first connecting piece is arranged on the first connecting piece in a penetrating mode, the first connecting piece penetrates through the first sub-protruding portion, the first end of the first connecting piece and the second sub-protruding portion, the second connecting piece penetrates through the first sub-protruding portion, the first end of the first connecting piece and the second sub-protruding portion, the first end of the second connecting piece rotates relative to the second connecting piece.

8. The underbody as claimed in claim 5, wherein,

The swing arm assembly comprises a plurality of first connecting rods, and the first connecting rods are arranged at intervals along the extending direction of the longitudinal beam.

9. The underbody according to any one of claims 1 to 8, wherein,

The beam is connected with the longitudinal beam;

the swing arm assembly further comprises a second connecting rod, and the second connecting rod is movably connected to the cross beam and the wheel rim assembly.

10. A vehicle comprising the lower body according to any one of claims 1 to 9.