CN116039774A - Rear floor assembly - Google Patents

Abstract

The invention relates to a rear floor assembly, which comprises a rear floor, wherein longitudinal beams are arranged on two sides of the rear floor, a front cross beam and a rear cross beam which are arranged at intervals are arranged between the longitudinal beams, a suspension mounting plate is further arranged on the rear floor, two ends of the suspension mounting plate are fixedly connected with the front cross beam and the rear cross beam respectively, the front cross beam, the rear cross beam, the longitudinal beams and the suspension mounting plate are combined to form a frame structure, the rear floor is used for fixing a suspension connecting rod system, the longitudinal beams are used for mounting elastic elements, shock absorbers and brake assemblies, one end of a control arm of the suspension connecting rod system is hinged with the suspension mounting plate, and the other end of the control arm of the suspension connecting rod system is hinged with the brake assembly. The invention sets up the frame construction that the longeron, front beam, rear beam, suspension mounting panel make up on the back floor, under the precondition of canceling the subframe, guaranteed the sufficient rigidity, reduced the weight of the car, has realized the light weight of the car, has saved the cost of making the car.

Description

A rear floor assembly

technical field

The invention relates to the technical field of automobiles, in particular to chassis structure technology.

Background technique

As shown in Figures 1 and 2, the traditional independent rear suspension is limited by the stamping process of traditional sheet metal parts. A subframe is designed to solve the above two problems, namely, as shown in Figures 1 and 2, a suspension link system 4, an air spring 5, a shock absorber 6, and a brake assembly are installed on the subframe 3 of the prior art 7. The auxiliary frame 3 is connected with the vehicle body 2 again.

Therefore, the chassis structure is complex, resulting in a complex chassis system and a large structural weight, which puts pressure on the cost of the vehicle and is not conducive to the lightweight of the vehicle.

Contents of the invention

The purpose of the present invention is to provide a rear floor assembly to solve the problem that the existing automobile chassis structure has a sub-frame, which leads to high cost of the whole vehicle and is not conducive to the lightweight of the automobile.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

A rear floor assembly, comprising a rear floor, longitudinal beams are arranged on both sides of the rear floor, a front crossbeam and a rear crossbeam arranged at intervals are arranged between the longitudinal beams, and the rear floor is further provided with Suspension mounting plate, the two ends of the suspension mounting plate are respectively fixedly connected with the front beam and the rear beam, the front beam, the rear beam, the longitudinal beam, and the suspension mounting plate are combined to form a frame structure, and the rear floor is used for Fix the suspension link system, the longitudinal beam is used to install the elastic element, the shock absorber and the brake assembly, one end of the control arm of the suspension link system is hinged with the suspension mounting plate, and the other end is connected with the brake assembly hinged.

According to the above-mentioned technical means, since the longitudinal beam, front beam, rear beam and suspension mounting plate are arranged on the rear floor, the rear floor and the four form a frame structure with good strength, while the longitudinal beam is arranged on the longitudinal beam. The installation points of the elastic element, the shock absorber and the brake assembly, the installation points of the control arm on the suspension mounting plate, etc., arrange each component on the above frame;

At the same time, since the suspension mounting plate is used to articulate the control arm, the suspension linkage system can be directly arranged on the rear floor and the frame structure, thereby ensuring the stability of each component without sub-frame, and further It is beneficial to the lightweight of the car and reduces the cost of the whole vehicle.

Further, the combination of the rear floor, longitudinal beams, front beams, rear beams, and suspension mounting plates is integrally die-cast from cast aluminum

According to the above-mentioned technical means, the rigidity of the entire car body structure is greatly improved compared with the car body of traditional sheet metal parts through integral die-casting, and the use of aluminum materials also realizes the lightweight of the car.

Further, the number of the suspension mounting plates is 2, which are axisymmetric to the perpendicular direction of the axis of the front beam.

Further, an elastic element is provided on the longitudinal beam, one end of the elastic element is connected to the longitudinal beam, and the other end is connected to the control arm.

Further, one end of the shock absorber is connected to the longitudinal beam, and the other end is connected to the brake assembly.

Further, a horizontal stabilizer bar is provided between the two longitudinal beams, and both ends of the stabilizer bar are respectively connected to the control arms corresponding to each of the longitudinal beams.

Further, the rear floor is provided with criss-cross exhaust ribs.

Further, the suspension mounting plate is provided with lightening holes.

Further, the front beam and the rear beam longitudinal beams are all provided with reinforcing ribs.

Further, the elastic element is an air spring.

Beneficial effects of the present invention:

In the present invention, a frame structure composed of longitudinal beams, front beams, rear beams, and suspension mounting plates is arranged on the rear floor, and under the premise of canceling the auxiliary frame and ensuring sufficient rigidity, the vehicle's weight is reduced. The weight realizes the lightweight of the car and saves the cost of making the car.

Description of drawings

Fig. 1 is a structural schematic diagram of the connection relationship between the car body and the sub-frame in the prior art;

Fig. 2 is a structural schematic diagram of the connection relationship between the car body and the sub-frame in the prior art;

Fig. 3 is the schematic diagram of rear floor structure of the present invention;

Fig. 4 is a structural representation of the present invention;

Figure 5 is an exploded view of Figure 4;

Fig. 6 is a schematic diagram of the connection relationship of components in the present invention.

Among them, 1-rear floor; 2-car body; 3-subframe; 4-suspension linkage system; 5-air spring, 6-shock absorber, 7-brake assembly, 8-stabilizer bar; 9 - Suspension mounting plate; 10 - Longitudinal beam; 11 - Front cross member; 12 - Rear cross member.

Detailed ways

The implementation of the technical solutions of the present invention will be described below with reference to the accompanying drawings and preferred embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, but not for limiting the protection scope of the present invention.

It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the component layout type may also be more complicated.

This embodiment proposes a rear floor assembly, as shown in Figure 3, including a rear floor 1, longitudinal beams 10 are arranged on both sides of the rear floor, front beams 11 and rear The crossbeam 12, the two ends of the front crossbeam 11 and the rear crossbeam 12 are all fixedly connected with two longitudinal beams 10, and two suspension mounting plates 9 arranged at intervals are installed on the rear floor 1, and the two ends of the suspension mounting plate 9 are respectively It is fixedly connected with the front crossbeam 11 and the rear crossbeam 12, and at the midline of the line connecting the two suspension mounting plates 9, the rear floor 1 is left-right symmetrical as a whole.

The main force-bearing structure of the rear floor 1 is the longitudinal beam 10, the installation points of the air spring 5 and the shock absorber 6 are all set on the longitudinal beam 10, and the installation points of the control arm 41 of the suspension linkage system 4 are set on the two suspensions On the mounting plate 9, two suspension mounting plates 9 are vertically arranged, overlapped with the front beam 11 and the rear beam 12, and the bottom is overlapped with the floor panel of the rear floor 1 to form a frame structure as a whole to ensure sufficient rigidity. To ensure light weight, a weight-reducing hole is provided on the suspension mounting plate 9, and the hole can be used as a reserved rear axle drive shaft avoidance hole at the same time. At the same time, the combined structure of the rear floor 1 , the front beam 11 , the rear beam 12 , and the longitudinal beam 10 is integrally formed by die-casting, which ensures the strength of the installation points of each component.

As shown in Figures 4-6, the brake assembly 7 is fixed on the longitudinal beam 10, the suspension linkage system 4 is fixed on the rear floor 1, one end of the control arm 41 is hinged to the corresponding suspension mounting plate 9, and the other end Hinged with brake assembly 7.

One end of the shock absorber 6 is fixed on the longitudinal beam 10 , and the other end is fixed on the brake assembly 7 .

One end of the air spring 5 is fixed on the longitudinal beam 10 , and the other end is connected with the control arm 41 .

A stabilizer bar 8 is arranged between the two longitudinal beams 10 , and both ends of the stabilizer bar 8 are respectively connected to the corresponding control arms 41 of each longitudinal beam 10 .

In this embodiment, compared with the traditional body structure of sheet metal parts, the present invention cancels the sub-frame 3 and greatly reduces the manufacturing process. The process adopts a high-pressure casting process, and the material is aluminum alloy. Then process the mounting holes on each mounting surface by machining.

In this embodiment, the main structure of the rear floor 1 is composed of two longitudinal beams 10, a front beam 11, a rear beam 12, and two suspension mounting plates 9 to form an integral structure, wherein the suspension mounting plate 8, the longitudinal beam 10 , The rear floor 1 is designed with mounting supports for installing corresponding components. The coordinates of the mounting points are matched according to the hard point layout of the chassis suspension. The side walls of the mounting supports are designed with reinforcing ribs to ensure the rigidity and strength of the mounting points.

In this embodiment, several reinforcing ribs are designed in the cavities of the longitudinal beam 10, the front beam 11 and the rear beam 12, which are arranged in a staggered manner. The role of ensuring the realization of the casting process.

In this embodiment, in order to ensure the light weight of the rear floor 1 structure, weight-reducing holes are designed on the suspension mounting plate 9 and the rear floor 1 panel.

This embodiment cancels the sub-frame, and the main structure is composed of control arms 41, brake assembly 7, shock absorber 6, air spring 5, stabilizer bar 8 and other parts, which are connected into a whole by bolts. The chassis is independently suspended, and each link system in this embodiment is directly connected to the one-piece die-casting rear floor 1, without the sub-frame 3 as a transition.

The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention.

Claims (10)

1. A rear floor assembly comprising a rear floor, characterized in that: the utility model discloses a rear floor, including back floor, front end, back floor, front end, back beam, back floor all are provided with the longeron be equipped with front cross beam and the back cross beam of interval arrangement between the longeron, still be equipped with the suspension mounting panel on the back floor, the both ends of suspension mounting panel respectively with front cross beam and back cross beam fixed connection, front cross beam, back cross beam, longeron, suspension mounting panel combination form frame construction, the back floor is used for fixed suspension connecting rod system, the longeron is used for installing elastic element, shock absorber and stopper assembly, the one end and the suspension mounting panel of the control arm of suspension connecting rod system are articulated, and the other end is articulated with the stopper assembly.

2. The rear floor assembly of claim 1, wherein: the rear floor, the longitudinal beam, the front cross beam, the rear cross beam and the suspension mounting plate are combined and formed by adopting cast aluminum integrated die casting.

3. The rear floor assembly of claim 1, wherein: the number of the suspension mounting plates is 2, and the suspension mounting plates are axisymmetric to the direction of the perpendicular bisector of the axis of the front cross beam.

4. The rear floor assembly of claim 2, wherein: elastic elements are arranged on the longitudinal beams, one ends of the elastic elements are connected with the longitudinal beams, and the other ends of the elastic elements are connected with the control arms.

5. The rear floor assembly of claim 2, wherein: one end of the shock absorber is connected with the longitudinal beam, and the other end of the shock absorber is connected with the brake assembly.

6. The rear floor assembly of claim 4, wherein: a transverse stabilizer bar is arranged between the two longitudinal beams, and two ends of the stabilizer bar are respectively connected with control arms corresponding to each longitudinal beam.

7. The rear floor assembly of claim 1, wherein: and the rear floor is provided with crisscross exhaust ribs.

8. The rear floor assembly of claim 1, wherein: the suspension mounting plate is provided with a lightening hole.

9. The rear floor assembly of claim 1, wherein: the front cross beam and the rear cross beam longitudinal beams are respectively provided with reinforcing ribs.

10. The rear floor assembly of claim 4, wherein: the elastic element is an air spring.

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