CN211055242U - A multi-link lightweight rear subframe - Google Patents

Abstract

The utility model discloses a connecting rod light-weight rear sub-frame in the technical field of sub-frames, comprising: a fixing plate; On both sides, the fixing beams are hydraulically formed by pipe materials; four sleeves are welded to one end of the two fixing beams and the rear ends of the left and right sides of the fixing plate, and the fixing plate includes: a rear Fixing plate, the rear fixing plate is fixed on the front end of the front fixing plate through the two fixing beams, the utility model has a reasonable structure, the plate thickness is evenly distributed, adopts a hydroformed pipe beam, the weight is light, and the front toe is cambered. The bracket is formed by single-piece stamping. The relative position accuracy of single-piece stamping is high. It is welded with the connecting rod of the body. The stiffness performance of the assembly position is greatly improved, which can effectively meet the actual needs of stiffness and modal. There are few welding parts and the design of the welding fixture is simple. , The welding seam is short, the welding deformation is small, and the dimensional accuracy is high.

Description

A multi-link lightweight rear subframe

technical field

The utility model relates to the technical field of subframes, in particular to a multi-link lightweight rear subframe.

Background technique

The subframe can be regarded as the skeleton of the front and rear axles, and is an integral part of the front and rear axles. The sub-frame is not a complete frame, but only supports the front and rear axles and suspension brackets, so that the axle and suspension pass through it and then connect to the "front frame", which is customarily called "sub-frame". The role of the sub-frame is to block vibration and noise and reduce its direct entry into the car, so most of them appear on luxury cars and off-road vehicles, and some cars also have sub-frames for the engine. The suspension of the traditional load-bearing body without a subframe is directly connected to the body steel plate. Therefore, the suspension rocker arm mechanisms of the front and rear axles are all parts, not assemblies. After the subframe is born, the front and rear suspensions can be assembled on the subframe first to form an axle assembly, and then the assembly can be installed on the body together.

In order to meet the higher requirements of vehicle chassis handling performance, more and more cars nowadays choose to use multi-link suspension. The multi-link suspension is composed of three or more connecting rods. The multi-link suspension has multiple links, which can control the forces of the wheels in various aspects, so as to adjust the wheel positioning individually. Large room for adjustment and modification possibilities.

The existing multi-link rear subframe is heavy, cannot meet the actual requirements of stiffness and modal, has complex structure, many welding seams, large welding deformation, and poor dimensional accuracy.

Utility model content

The purpose of the present invention is to provide a multi-link lightweight rear sub-frame, so as to solve the problem that the existing multi-link rear sub-frame proposed in the above background technology is heavy and cannot meet the actual requirements of rigidity and modal. The structure is complex, there are many welds, the welding deformation is large, and the dimensional accuracy is poor.

In order to achieve the above purpose, the utility model provides the following technical solutions: a multi-link lightweight rear subframe, comprising:

fixed plate;

Two fixed beams, one left and one right are welded on the left and right sides of the fixed plate, and the fixed beams are formed by pipe hydroforming;

Four sleeves are respectively welded to one end of the two fixed beams and the rear ends of the left and right sides of the fixed plate.

Preferably, the fixing plate includes:

front fixing plate;

a rear fixing plate, the rear fixing plate is fixed on the front end of the front fixing plate through the two fixing beams;

Two toe-in camber brackets, the two toe-in camber brackets are welded on the left and right sides of the front surface of the rear fixing plate, and the front fixing plate is between the two toe-in camber brackets.

Preferably, both of the fixed beams include:

a hollow tube, one end of the hollow tube is welded on the outer side of the front surface of the rear fixing plate, and the hollow tube is on the inner side of the two toe-in camber brackets;

a hollow installation head, the hollow installation head is welded on the other end of the hollow tube;

a first installation hole, the first installation hole is opened at the top middle end of the hollow installation head, the first installation hole penetrates the bottom of the hollow installation head, and the first installation hole at the bottom of the hollow installation head The mounting holes correspond to the first mounting holes on the top of the hollow mounting head.

Preferably, the four sleeves include:

body;

The second installation hole is opened on the front surface of the pipe body.

Preferably, the two toe-in camber brackets are formed by single-piece stamping.

Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model has a reasonable structure, uniform plate thickness distribution, adopts a hydroformed pipe beam, and is light in weight; The relative position accuracy of forming is high, and it is welded with the body connecting rod, and the rigidity performance of the assembly position is greatly improved, which can effectively meet the actual requirements of rigidity and modal. It has high precision and effectively solves the problems that the traditional multi-link rear subframe is heavy in weight, cannot meet the actual requirements of stiffness and modal, complex structure, many welding seams, large welding deformation and poor dimensional accuracy.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural schematic diagram of the fixed plate of the present invention;

Fig. 3 is the structural schematic diagram of the utility model fixed beam;

FIG. 4 is a schematic diagram of the structure of the casing of the utility model.

In the picture: 100 fixed plate, 110 front fixed plate, 120 rear fixed plate, 130 toe-in camber bracket, 200 fixed beam, 210 hollow tube, 220 hollow mounting head, 230 first installation hole, 300 casing, 310 tube body, 320 second mounting holes.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The utility model provides a multi-link lightweight rear subframe, which has a reasonable structure, uniform plate thickness distribution, and satisfies rigidity and modal satisfaction. Please refer to FIG. 1 , including a fixed plate 100, a fixed beam 200 and a sleeve 300;

Please refer to FIG. 1 and FIG. 2 , the fixing plate 100 is a stamping part, and the fixing plate 100 includes:

The front fixing plate 110, the right side of the front surface of the front fixing plate 110 is provided with a weight-reducing hole, the sub-frame optimizes the plate thickness and topology according to the performance requirements (stiffness, mode, strength), and adjusts the single-piece plate thickness of the sub-frame , adding weight-reducing holes to achieve lightweight;

The rear fixing plate 120 is fixed to the front end of the front fixing plate 110 through two fixing beams 200;

The two toe-in camber brackets 130 are welded on the left and right sides of the front surface of the rear fixing plate 120, the front fixing plate 110 is between the two toe-in camber brackets 130, and the two toe-in camber brackets 130 are formed by single-piece stamping. The relative position accuracy of single-piece stamping forming is high, and it is welded with the connecting rod of the body, and the rigidity performance of the assembly position is greatly improved;

Please refer to FIG. 1 and FIG. 3 , two fixing beams 200 are welded on the left and right sides of the fixing plate 100 , and the fixing beams 200 are hydroformed by pipes to improve the performance of the fixing beams 200 and reduce the weight of the fixing beams 200 . Each fixed beam 200 includes:

One end of the hollow tube 210 is welded on the outer side of the front surface of the rear fixing plate 120, and the hollow tube 210 is on the inner side of the two toe-in camber brackets 130;

The hollow mounting head 220 is welded on the other end of the hollow tube 210;

The first mounting hole is opened at the top middle end of the hollow mounting head 220 , the first mounting hole 230 penetrates through the bottom of the hollow mounting head 220 , the first mounting hole 230 at the bottom of the hollow mounting head 220 and the first mounting hole 230 at the top of the hollow mounting head 220 The mounting hole 230 corresponds to;

Please refer to FIG. 1 and FIG. 4 , four sleeves 300 are welded to one end of the two fixing beams 200 and the rear ends of the left and right sides of the fixing plate 100 respectively. The four sleeves 300 include:

The tube bodies 310 are welded to the front ends of the two hollow mounting heads 220 and the left and right ends of the rear fixing plate 120 , one tube body 310 is welded to a fixing beam 200 , and two tube bodies 310 are welded to the rear fixing plate 120 , one left and the other right. the left and right ends of

The second installation hole 330 is opened on the front surface of the pipe body 310. The utility model is a welded electrophoresis product. The structure adopts four-beam tailor welding, the toe-in camber bracket is integrated, and the left and right beams are hydroformed parts. The structure meets the performance requirements. Plate thickness optimization and topology optimization to achieve final lightweight, the multi-link rear subframe material adopts QStE420TM, yield strength > 420MPa, traditional subframe material uses SAPH440, yield strength > 305MPa, high material strength, subframe design The weight is reduced. The left and right longitudinal beams of the multi-link rear subframe are hydraulically formed. The hydraulic parts have the advantages of superior product performance, high profile and dimensional accuracy, and low weight. The multi-link rear subframe can isolate the road vibration and bring good Compared with similar models, this sub-frame has low weight and superior performance, and realizes the lightweight requirements of the whole vehicle.

Although the present invention has been described above with reference to the embodiments, various modifications may be made and equivalents may be substituted for parts thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present invention can be combined with each other in any way, and the description of these combinations is not exhaustive in this specification. For the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (5)

1. A multi-link lightweight rear subframe is characterized in that: comprising: fixing plate (100); Two fixing beams (200), one left and one right are welded on the left and right sides of the fixing plate (100), and the fixing beams (200) are formed by pipe hydroforming; Four sleeves (300) are respectively welded to one end of the two fixing beams (200) and the left and right rear ends of the fixing plate (100). 2. The multi-link lightweight rear subframe according to claim 1, wherein the fixing plate (100) comprises: front fixing plate (110); a rear fixing plate (120), the rear fixing plate (120) is fixed on the front end of the front fixing plate (110) through the two fixing beams (200); Two toe-in camber brackets (130), the two toe-in camber brackets (130) are welded on the left and right sides of the front surface of the rear fixing plate (120), and the front fixing plate (110) is on the two sides. between the toe-in camber brackets (130). 3. The multi-link lightweight rear subframe according to claim 1-2, wherein the two fixed beams (200) both comprise: A hollow tube (210), one end of the hollow tube (210) is welded on the outer side of the front surface of the rear fixing plate (120), and the hollow tube (210) is attached to the two toe-in camber brackets (130) inside; a hollow installation head (220), the hollow installation head (220) is welded on the other end of the hollow tube (210); a first installation hole (230), the first installation hole is opened at the top middle end of the hollow installation head (220), the first installation hole (230) penetrates through the bottom of the hollow installation head (220), The first mounting holes (230) at the bottom of the hollow mounting head (220) correspond to the first mounting holes (230) at the top of the hollow mounting head (220). 4. The multi-link lightweight rear subframe according to claim 1, wherein the four sleeves (300) all comprise: pipe body (310); A second installation hole (330), the second installation hole (330) is opened on the front surface of the pipe body (310). 5 . The multi-link lightweight rear subframe according to claim 2 , wherein the two toe-in camber brackets ( 130 ) are formed by single-piece stamping. 6 .

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