CN216943267U - Chassis structure and electric automobile - Google Patents

Abstract

The utility model discloses a chassis structure and an electric automobile, the chassis structure comprises a lower automobile body and a chassis arranged on the lower automobile body, the chassis comprises a rear axle assembly, the rear axle assembly can be set as an independent suspension rear axle assembly or a dependent suspension rear axle assembly, the independent suspension rear axle assembly or the dependent suspension rear axle assembly is selected to be connected to the lower automobile body, so that the chassis structure can form different chassis combinations, when the rear axle assembly is set as the independent suspension rear axle assembly, the chassis structure forms the chassis combination capable of being used for carrying passengers, when the rear axle assembly is the dependent suspension rear axle assembly, the chassis structure forms the chassis assembly capable of carrying cargo, so that the chassis structure can be switched between a passenger automobile type and a cargo automobile type through the switching of the rear axle assembly on the premise of keeping the rest structure of the chassis structure unchanged, so that the chassis structure of different automobile types can be generalized, so as to shorten the development cycle of the multi-platform vehicle type and reduce the development cost of the multi-platform vehicle type.

Description

Chassis structure and electric automobile

Technical Field

The utility model relates to the technical field of automobile chassis, in particular to a chassis structure and an electric automobile.

Background

The chassis generally refers to a mechanical structure consisting of a suspension system, a steering system, a braking system, a transmission system and the like, and the construction of the chassis structure can shorten the development period of the same platform vehicle type and reduce the development cost. However, in the design of the chassis of multiple platform vehicle types, due to different vehicle types, the suspension system of the chassis is also changed, and the whole chassis is often required to be redeveloped, so that the development period of the vehicle is prolonged, and the development cost of the vehicle is increased. Therefore, how to enable the chassis to be matched with the automobile with multiple platform automobile types is a problem which needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a chassis structure and an electric automobile, and aims to solve the problem of how to enable a chassis to be adaptive to automobiles with multiple platform automobile types.

In order to achieve the above object, the present invention provides a chassis structure, including a lower vehicle body and a chassis arranged on the lower vehicle body, where the chassis includes a rear axle assembly, and the rear axle assembly can be set as an independent suspension rear axle assembly or a dependent suspension rear axle assembly;

the independent suspension rear axle assembly or the dependent suspension rear axle assembly is selected to be coupled to the lower vehicle body to enable the chassis structure to form different chassis combinations.

Optionally, the lower body comprises a lower body and a connecting frame arranged on the lower body;

the non-independent suspension rear axle assembly includes:

the rear plate spring assembly is arranged on the connecting frame;

the rear axle structure is arranged on the rear plate spring assembly and extends in the left-right direction;

one end of the first rear shock absorber assembly is arranged on the rear axle structure, and the other end of the first rear shock absorber assembly is connected to the lower vehicle body;

the first rear wheel assembly comprises two wheel structures arranged at two ends of the rear axle structure; and the number of the first and second groups,

a first rear brake assembly disposed on the first rear wheel assembly.

Optionally, the lower vehicle body is provided with a first mounting position and a second mounting position which are arranged at intervals, the first mounting position is positioned at the outer side of the second mounting position, and the connecting frame is arranged at the first mounting position;

the rear axle structure comprises a rear rigid axle arranged on the rear plate spring assembly, and the first rear shock absorber assembly is connected to the rear rigid axle;

each wheel structure comprises first wheels, and the two first wheels are arranged at two ends of the rear rigid axle.

Optionally, the lower vehicle body is provided with a first mounting position and a second mounting position which are arranged at intervals, the first mounting position is positioned at the outer side of the second mounting position, and the connecting frame is arranged at the second mounting position;

the rear axle structure comprises a rear drive axle arranged on the rear plate spring assembly, and the first rear shock absorber assembly is connected to the rear drive axle;

each wheel structure includes a plurality of second wheels, and two sets of a plurality of the second wheels are located the both ends of rear drive axle.

Optionally, the connecting frame comprises a connecting frame and a lifting lug frame which are arranged at intervals in the front-back direction;

one end of the rear plate spring assembly is detachably mounted on the connecting support, and the other end of the rear plate spring assembly is detachably mounted on the lifting lug support.

Optionally, the rear axle structure is mounted to the rear leaf spring assembly by U-bolts.

Optionally, the independent suspension rear axle assembly comprises:

the auxiliary frame is arranged on the lower vehicle body;

the two lower swing arm assemblies are respectively arranged on two sides of the auxiliary frame;

the second rear wheel assembly comprises two rear wheels which are respectively arranged on the two lower swing arm assemblies;

one end of the second rear shock absorber assembly is arranged on the lower swing arm assembly, and the other end of the second rear shock absorber assembly is connected to the lower vehicle body;

one end of the rear spring assembly is arranged on the lower swing arm assembly, and the other end of the rear spring assembly is used for connecting an upper vehicle body;

the two upper swing arm assemblies are arranged between the rear shock absorber and the rear wheel;

two ends of the rear stabilizer bar assembly are respectively arranged on the two lower swing arm assemblies, and the middle part of the rear stabilizer bar assembly is hinged to the auxiliary frame; and the number of the first and second groups,

and the second rear brake assembly is arranged on the second rear wheel assembly.

Optionally, the independent suspension rear axle assembly further comprises a rear steering gear arranged on the auxiliary frame, and the rear steering gear is in driving connection with the second rear wheel assembly.

Optionally, the independent suspension rear axle assembly further comprises:

the rear driving motor is arranged on the auxiliary frame; and the number of the first and second groups,

and one end of the rear driving shaft is in driving connection with the rear driving motor, and the other end of the rear driving shaft is in driving connection with the second rear wheel assembly.

The utility model further provides an electric automobile which comprises the chassis structure.

According to the technical scheme, the independent suspension rear axle assembly is suitable for manned vehicle types, the dependent suspension rear axle assembly is suitable for cargo-carrying vehicle types, when the rear axle assembly is set as the independent suspension rear axle assembly, the chassis structure forms a chassis combination capable of being used for manned, when the rear axle assembly is the dependent suspension rear axle assembly, the chassis structure forms a chassis assembly capable of being used for cargo carrying, and therefore through the switching of the rear axle assembly, on the premise that the rest structure of the chassis structure is not changed, the chassis structure can be switched between manned vehicle types and cargo-carrying vehicle types, the chassis structures of different vehicle types can be generalized, development period of multi-platform vehicle types is shortened, and development cost of the multi-platform vehicle types is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a chassis structure provided in the present invention;

FIG. 2 is a perspective view of an embodiment of the rear axle assembly of the dependent suspension of FIG. 1;

FIG. 3 is a perspective view of another embodiment of the rear axle assembly of the dependent suspension of FIG. 1;

FIG. 4 is a perspective view of an embodiment of the rear axle assembly of the independent suspension of FIG. 1.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The chassis generally refers to a mechanical structure composed of a suspension system, a steering system, a braking system, a transmission system and the like, and the construction of the chassis structure can shorten the development period of the same platform vehicle type and reduce the development cost. However, in the design of the chassis of multiple platform vehicle types, due to different vehicle types, the suspension system of the chassis is also changed, and the whole chassis is often required to be redeveloped, so that the development period of the vehicle is prolonged, and the development cost of the vehicle is increased.

In view of this, the present invention provides a chassis structure, which aims to solve the problem of how to make the chassis adaptable to automobiles of multiple platform vehicle types. Fig. 1 to 4 are schematic structural diagrams of an embodiment of a chassis structure provided in the present invention.

Referring to fig. 1 to 4, the chassis structure 100 includes a lower vehicle body 1 and a chassis disposed on the lower vehicle body 1, the chassis includes a rear axle assembly, the rear axle assembly can be configured as an independent suspension rear axle assembly 4 or a dependent suspension rear axle assembly 3, and the independent suspension rear axle assembly 4 or the dependent suspension rear axle assembly 3 is selected to be connected to the lower vehicle body 1, so that the chassis structure 100 can form different chassis combinations.

In the technical scheme of the utility model, the independent suspension rear axle assembly 4 is suitable for manned vehicle types, the dependent suspension rear axle assembly 3 is suitable for cargo-carrying vehicle types, when the rear axle assembly is set as the independent suspension rear axle assembly 4, the chassis structure 100 forms a chassis combination capable of being used for manned, when the rear axle assembly is the dependent suspension rear axle assembly 3, the chassis structure 100 forms a chassis assembly capable of carrying cargo, so that the chassis structure 100 can be switched between the manned vehicle type and the cargo-carrying vehicle type on the premise of keeping the rest structures of the chassis structure 100 unchanged through switching of the rear axle assembly, so that the chassis structure 100 of different vehicle types can be generalized, the development period of multi-platform vehicle types is shortened, and the development cost of the multi-platform vehicle types is reduced.

It should be noted that, in the present application, front, rear, upper, lower, inner, and the like are defined with reference to the vehicle body, specifically, the length direction of the vehicle body is the front-rear direction, the vehicle head is the front, that is, the traveling direction of the vehicle is the front, and the opposite is the rear, the width direction of the vehicle body is the inner-outer direction, that is, the direction close to the middle of the vehicle body is the inner, and the opposite is the outer, and the height direction of the vehicle body is the up-down direction; it is to be understood that the directional terms are used merely for clarity and convenience in describing the technical solutions, and should not be construed as limiting the scope of the present application.

Further, when the chassis structure 100 is a chassis assembly for carrying cargo, referring to fig. 2 and 3, the lower vehicle body 1 includes a lower vehicle body 11 and a connecting frame 12 disposed on the lower vehicle body 11, the dependent suspension rear axle assembly 3 includes a rear plate spring assembly 31, a rear axle structure 32, a first rear damper assembly 35 and a first rear brake assembly 34, one end of the rear plate spring assembly 31 is disposed on the connecting frame 12, the rear axle structure 32 is disposed on the rear plate spring assembly 31, the rear axle structure 32 extends in the left-right direction, one end of the first rear damper assembly 35 is disposed on the rear axle structure 32, the other end is configured to be connected to the lower vehicle body, the first rear wheel assembly 33 includes two wheel structures 331 disposed at two ends of the rear axle structure 32, the first rear brake assembly 34 is disposed on the first rear wheel assembly 33, and thus configured, through the connecting frame 12, the rear plate spring assembly 31 and the first rear shock absorber assembly 35 are arranged to damp vibration of the vehicle body or the first rear wheel assembly 33, and the first rear wheel assembly 33 is supported by the rear axle structure 32, and secondly, since a truck type vehicle does not generally need high comfort, the control cost is important, and the rear plate spring assembly 31, the first rear shock absorber assembly 35 and the first rear brake assembly 34 are generally standard components, so that the cost is relatively low, so that the non-independent suspension rear axle assembly 3 has certain damping capacity and a certain load capacity is kept, the manufacturing cost of the non-independent suspension rear axle assembly 3 can be effectively reduced, and the non-independent suspension rear axle assembly 3 can be suitable for a small truck.

It is to be understood that the rear leaf spring assemblies 31, the first rear shock absorber assemblies 35, and the first rear brakes are generally two in number and are arranged at a left-right interval to be provided corresponding to the two wheel structures 331. The connecting frame 12 and the lower body 11 may be connected by bolts or by welding, but the utility model is not limited thereto. Specifically, in the present embodiment, the connecting frame 12 is fixed to the lower vehicle body 1 by welding, and further, the rear plate spring assembly 31, the rear axle structure 32, the first rear shock absorber assembly 35, and the first rear brake assembly 34 all adopt detachable connecting structures, so as to facilitate maintenance and replacement.

In order to adapt to the cargo-carrying requirements of different automobiles, such as small trucks and heavy trucks, due to the large difference of cargo-carrying weight, in one embodiment, referring to fig. 2, the lower body 11 is formed with a first mounting position and a second mounting position spaced apart from each other, the first mounting position is located outside the second mounting position, the connecting frame 12 is located at the first mounting position, the rear axle structure 32 includes a rear rigid axle 321 located at the rear plate spring assembly 31, the first rear shock absorber assembly 35 is connected to the rear rigid axle 321, wherein each of the wheel structures 331 includes a first wheel, two first wheels are located at two ends of the rear rigid axle 321, and the arrangement is such that the rear rigid axle 321 is arranged to enable the rear axle structure 32 to bear large impact, while helping to increase the load carrying capacity of the non-independently suspended rear axle assembly 3, the non-independently suspended rear axle assembly 3 of this embodiment is generally suitable for use in small trucks because the wheel arrangement 331 has only one first wheel, such that the first rear wheel assembly 33 cannot bear excessive load, and thus the non-independently suspended rear axle assembly 3 bears limited load.

In another embodiment, referring to fig. 3, the lower vehicle body 11 is formed with a first mounting position and a second mounting position which are arranged at an interval, the first mounting position is located outside the second mounting position, the connecting frame 12 is located at the second mounting position, the rear axle structure 32 includes a rear drive axle 322 arranged on the rear plate spring assembly 31, the first rear shock absorber assembly 35 is connected to the rear drive axle 322, each wheel structure 331 includes a plurality of second wheels, two sets of the plurality of second wheels are arranged at two ends of the rear drive axle 322, the arrangement is such that the connecting frame 12 is moved toward the middle of the vehicle, so that the wheel structure 331 has a larger space for arranging more second wheels, and by arranging a plurality of the second wheels, so as to bear a larger weight, so that the non-independent rear axle assembly can bear a larger load, meanwhile, the rear drive axle 322 is arranged, so that the rear wheel assembly is driven, the problem that the power of the non-independent suspension rear axle assembly 3 is insufficient due to the fact that the load is too large is avoided, and therefore the non-independent rear axle assembly can be suitable for a heavy truck.

In order to facilitate adjustment of the rear plate spring assembly 31, in the present embodiment, the connecting frame 12 includes a connecting bracket 121 and a shackle bracket 122 disposed at an interval in the forward and backward directions, wherein one end of the rear plate spring assembly 31 is detachably mounted to the connecting bracket 121, and the other end is detachably mounted to the shackle bracket 122, so that the rear plate spring assembly 31 is easily mounted and dismounted by the shackle bracket 122, and the rear plate spring assembly 31 has a certain adjustment space to facilitate mounting of the rear plate spring assembly 31.

In order to mount the rear axle structure 32 to the rear plate spring assembly 31, the rear axle structure 32 is mounted to the rear plate spring assembly 31 by a U-shaped bolt 36, and the U-shaped bolt 36 is arranged to detachably mount the rear axle structure 32 to the rear plate spring assembly 31 for maintenance and replacement. It is understood that there are usually two U-shaped bolts 36, and two U-shaped bolts 36 are arranged at a distance in the left-right direction.

In order to enable the chassis structure 100 to be used for a passenger vehicle, please refer to fig. 4, the independent suspension rear axle assembly 4 includes a subframe 41, two lower swing arm assemblies 42, a second rear wheel assembly 43, a second rear shock absorber assembly 44, a rear spring assembly 45, two upper swing arm assemblies 46, a rear stabilizer bar assembly 47 and a second rear brake assembly 48, the frame is disposed on the lower vehicle body 1, the two lower swing arm assemblies 42 are respectively disposed on two sides of the subframe 41, the second rear wheel assembly 43 includes two rear wheels respectively disposed on the two lower swing arm assemblies 42, one end of the second rear shock absorber assembly 44 is disposed on the lower swing arm assembly 42, the other end is used for connecting to the lower vehicle body, one end of the rear spring assembly 45 is disposed on the lower swing arm assembly 42, the other end is used for connecting to the upper vehicle body, the upper swing arm assembly 46 is disposed between the rear shock absorber and the rear wheels, the two ends of the rear stabilizer bar assembly 47 are respectively arranged on the two lower swing arm assemblies 42, the middle part of the rear stabilizer bar assembly 47 is hinged to the auxiliary frame 41, the second rear brake assembly 48 is arranged on the second rear wheel assembly 43, the auxiliary frame 41 is arranged so as to be convenient for mounting the lower swing arm assembly 42, and the upper swing arm assembly 46 and the lower swing arm assembly 42 are arranged so as to enable the independent suspension rear axle assembly 4 to form a double-cross arm type independent suspension, so that the vibration of the vehicle body or the second rear wheel assembly 43 is attenuated, and the independent suspension rear axle assembly 4 can be suitable for passenger vehicles.

Further, independent suspension rear axle assembly 4 still includes locates sub vehicle frame 41's rear steering gear 49, rear steering gear 49 drive connection second rear wheel assembly 43, so set up, through setting up rear steering gear 49, so that independent suspension rear axle assembly 4 can realize the rear wheel and turn to, so that promote independent suspension rear axle assembly 4's equilibrium and stability for in time adjust the rear wheel angle according to driving environment, bring higher driving limit and the more careful driving experience for the driver.

Further, in order to increase the driving force of the automobile, in this embodiment, the independent suspension rear axle assembly 4 further includes a rear driving motor 410 and a rear driving axle 411, the rear driving motor 410 is disposed on the subframe 41, one end of the rear driving axle 411 is drivingly connected to the rear driving motor 410, and the other end of the rear driving axle 411 is drivingly connected to the second rear wheel assembly 43, so that the rear driving axle 411 is driven by the rear driving motor 410 to rotate so as to drive the second rear wheel assembly 43 to rotate, so that the independent suspension rear axle assembly 4 can realize rear wheel driving, thereby contributing to lifting the driving force of the independent suspension rear axle assembly 4.

In addition, the present invention further provides an electric vehicle, where the electric vehicle includes the chassis structure 100, and it should be noted that the structure of the chassis structure 100 in the electric vehicle may refer to the embodiment of the chassis structure 100, and details are not repeated herein; since the chassis structure 100 is used in the electric vehicle provided by the present invention, the embodiment of the electric vehicle provided by the present invention includes all technical solutions of all embodiments of the chassis structure 100, and the achieved technical effects are also completely the same, and are not described herein again.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A chassis structure is characterized by comprising a lower vehicle body and a chassis arranged on the lower vehicle body, wherein the chassis comprises a rear axle assembly which can be set as an independent suspension rear axle assembly or a non-independent suspension rear axle assembly;

the independent suspension rear axle assembly or the dependent suspension rear axle assembly is selected to be coupled to the lower vehicle body to enable the chassis structure to form different chassis combinations.

2. The chassis structure according to claim 1, wherein the lower body includes a lower body and a connecting frame provided to the lower body;

the non-independent suspension rear axle assembly includes:

the rear plate spring assembly is arranged on the connecting frame;

the rear axle structure is arranged on the rear plate spring assembly and extends in the left-right direction;

one end of the first rear shock absorber assembly is arranged on the rear axle structure, and the other end of the first rear shock absorber assembly is connected to the lower vehicle body;

the first rear wheel assembly comprises two wheel structures arranged at two ends of the rear axle structure; and the number of the first and second groups,

a first rear brake assembly disposed on the first rear wheel assembly.

3. The chassis structure according to claim 2, wherein the lower vehicle body is formed with a first mounting position and a second mounting position which are arranged at an interval, and the first mounting position is located outside the second mounting position, and the link is provided at the first mounting position;

the rear axle structure comprises a rear rigid axle arranged on the rear plate spring assembly, and the first rear shock absorber assembly is connected to the rear rigid axle;

each wheel structure comprises first wheels, and the two first wheels are arranged at two ends of the rear rigid axle.

4. The chassis structure according to claim 2, wherein the lower vehicle body is formed with a first mounting position and a second mounting position which are arranged at an interval, and the first mounting position is located outside the second mounting position, and the link is provided at the second mounting position;

the rear axle structure comprises a rear drive axle arranged on the rear plate spring assembly, and the first rear shock absorber assembly is connected to the rear drive axle;

each wheel structure includes a plurality of second wheels, and two sets of a plurality of the second wheels are located the both ends of rear drive axle.

5. The chassis structure according to claim 2, wherein the connecting frame comprises connecting brackets and lifting lug brackets which are arranged at intervals in the front-back direction;

one end of the rear plate spring assembly is detachably mounted on the connecting support, and the other end of the rear plate spring assembly is detachably mounted on the lifting lug support.

6. The chassis structure of claim 2, wherein the rear axle structure is mounted to the rear leaf spring assembly by U-bolts.

7. The chassis structure of claim 1, wherein the independent suspension rear axle assembly comprises:

the auxiliary frame is arranged on the lower vehicle body;

the two lower swing arm assemblies are respectively arranged on two sides of the auxiliary frame;

the second rear wheel assembly comprises two rear wheels which are respectively arranged on the two lower swing arm assemblies;

one end of the second rear shock absorber assembly is arranged on the lower swing arm assembly, and the other end of the second rear shock absorber assembly is connected to the lower vehicle body;

one end of the rear spring assembly is arranged on the lower swing arm assembly, and the other end of the rear spring assembly is used for connecting an upper vehicle body;

the two upper swing arm assemblies are arranged between the rear shock absorber and the rear wheel;

two ends of the rear stabilizer bar assembly are respectively arranged on the two lower swing arm assemblies, and the middle part of the rear stabilizer bar assembly is hinged to the auxiliary frame; and the number of the first and second groups,

and the second rear brake assembly is arranged on the second rear wheel assembly.

8. The chassis structure of claim 7, wherein said independent suspension rear axle assembly further includes a rear steering gear mounted to said subframe, said rear steering gear drivingly connected to said second rear wheel assembly.

9. The chassis structure of claim 7, wherein the independent suspension rear axle assembly further comprises:

the rear driving motor is arranged on the auxiliary frame; and the number of the first and second groups,

and one end of the rear driving shaft is in driving connection with the rear driving motor, and the other end of the rear driving shaft is in driving connection with the second rear wheel assembly.

10. An electric vehicle characterized by comprising the chassis structure according to any one of claims 1 to 9.

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