CN208867810U - A lightweight torsion beam structure - Google Patents

Abstract

The utility model discloses a lightweight torsion beam structure, which comprises a transverse beam and two longitudinal arms fixed at both ends of the transverse beam. The inner side of the joint of the rear arm is provided with a spring tray, and the rear side of the spring tray is provided with a shock absorber; The rear end face is fixed with a hub plate parallel to the rear end face. The lightweight torsion beam structure of the utility model can reduce the weight by about 5 kilograms, thereby improving the response speed of the suspension and improving the safety performance of the automobile, and has high practical value.

Description

A kind of lightweight torsion girder construction

Technical field

The utility model relates to field of automobile, and in particular to a kind of lightweight torsion girder construction.

Background technique

Torsion beam is that the important component of torsion beam semi-independent suspension is played by the torsion of torsion beam intermediate transverse girder The effect of stabilizer bar can increase the roll stiffness of vehicle, improve the roll stability of vehicle, keep the steady of vehicle.Closely Nian Lai reduces the weight of each component of vehicle body increasingly for the considerations of reducing energy source of car consumption, making body lightening etc. Be taken seriously, torsion beam welding assembly usually by the punching press of muti-piece high-strength steel sheet, be welded, weight substantially 20Kg with On, heavier components are belonged in automobile suspension system；In order to reduce vehicle oil or electrical loss, need to reduce the weight of torsion beam Amount.On the other hand, the unsprung mass of suspension system is lighter, and suspension response speed is faster, and vehicle safety performance is better, therefore torsion The lighter beam welding assembly its quality under the premise of with suitable stiff the better.The torsion beam of the prior art as shown in Fig. 2, it by Crossbeam 1, trailing arm 2(include forearm 3 and postbrachium 4), spring tray 5, damper 6 and hub bracket 17 etc. constitute, this torsion beam Whole H-shaped, the trailing arm and crossbeam of two sides are substantially vertical, and wheel hub branch is arranged by welding manner on the outside of the postbrachium of trailing arm Frame 17, since hub bracket is relatively large heavier, the weight of torsion beam is larger, exists between this outer wheel hub and postbrachium and passes through Hub bracket connection, therefore wheel hub mounting structure intensity is affected.On the other hand, after the damper of the structure is directly installed on The rear end of arm, due to damper position relatively rearward, which needs substantially to extend postbrachium, so that torsion The overall weight of beam obviously increases, and cannot achieve the lightweight of torsion girder construction, while excessive weight makes suspension response speed Degree is slower, also affects the security performance of automobile.Publication date is on May 4th, 2018, the China of Publication No. CN107985001A Patent document discloses a kind of aluminum-steel hybrid torsion girder construction, including crossbeam, aluminium alloy side bar and end frame；The end of crossbeam Portion and the upper and lower part of end frame are provided at least three through-holes；At least three are provided on aluminium alloy side bar has circle The rotary table of shape via hole, rotary table are respectively arranged inside and outside the side bar；The upper and lower inner surface of beam-end bracket is accordingly set Be placed in the upper and lower surface of rotary table, and bolt pass sequentially through the end of crossbeam, the through-hole of end frame and rotary table via hole and lead to It crosses nut to fix, the length direction for extending perpendicularly to the crossbeam of bolt.The torsion beam using aluminum-steel hybrid structure come The overall weight of torsion beam is reduced, but the intensity of aluminium is lower than steel and material cost is higher, while aluminium is difficult to solder to need The overall structure of torsion beam is formed by being spirally connected combination, technology difficulty is very big for complicated torsion beam, therefore The production cost is very high.

Utility model content

The purpose of this utility model is that the torsion beam weight of the prior art is big, suspension response speed is slow and structure is strong to solve The problem for spending difference, provides a kind of lightweight torsion girder construction, can substantially reduce the weight of torsion beam, improves suspension response speed Degree, promotes the security performance of automobile.

The concrete scheme that the utility model uses to solve above-mentioned technical problem is a kind of lightweight torsion girder construction, It is characterized in that, the torsion beam includes crossbeam and two trailing arms for being fixed on crossbeam both ends, and the trailing arm generally concave surface is outside Arcuate structure, the middle part fixation of crossbeam and trailing arm and two trailing arms are symmetrical arranged relative to the center cross-sectional of the crossbeam, The trailing arm includes the forearm on front side of the crossbeam center line and the postbrachium on rear side of crossbeam center line, crossbeam and postbrachium The inside of junction is equipped with spring tray, and the rear side of spring tray is equipped with damper；The front end of forearm is equipped with axle sleeve, postbrachium Rear end is formed with the rear end face parallel with the center cross-sectional of the crossbeam, is fixed on the rear end face parallel with rear end face Boss plate, the area of the boss plate are greater than the area of the rear end face.The trailing arm of the utility model generally concave surface is outside (i.e. Be directed toward two side directions of automobile) arcuate structure, this structural beams are relatively short, lighter in weight and are conducive to two before and after trailing arm The structural member at end is arranged；Secondly, the rear end of the utility model postbrachium be formed with it is parallel with the center cross-sectional of the crossbeam after End face, and the direct stationary hub plate on the rear end face replace the boss plate of heavier-weight with the boss plate of lighter in weight, subtract The light overall weight of torsion beam, while boss plate is directly connect with postbrachium, increases the structural strength of wheel hub installation place.With it is existing Some torsion beams are compared, and the torsion beam of above-mentioned technical proposal can reduce by 3 kilograms or so of weight, realize the light weight of torsion beam Change, and it is possible thereby to improve suspension response speed, promotes the security performance of automobile.

Preferably, the front end of forearm be equipped with contraction flow region, the axle sleeve is cylindrical, the center line of axle sleeve and it is described before The front end of arm is vertical, and the forearm is welded and fixed with axle sleeve.

Preferably, being equipped with rubber bushing in axle sleeve, it is equipped with fixing bolt in rubber bushing, the fixing bolt passes through Rubber bushing and the swingable connection of axle sleeve.Rubber bushing as elastic component in axle sleeve, fixing bolt passes through rubber Bushing can be swung in a certain range relative to axle sleeve, so that the front end of forearm to be mounted on to the cantilever shalving of body of a motor car On.

Preferably, being equipped with damper bracket, the damper between the rear lateral portion of spring tray and the rear portion of postbrachium It is arranged on damper bracket；The damper bracket is U-shaped structure, one end of damper bracket and the rear lateral portion of spring tray It is welded and fixed, the other end of damper bracket and the posterior medial of postbrachium are welded and fixed, the U-shaped structure horizontal direction of damper bracket It is equipped with fixing axle, the damper is arranged in fixing axle.The damper that will be directly installed in the prior art on postbrachium It is changed to be mounted on damper bracket, this substantially reduces the length of postbrachium, the program can mitigate 2 kilograms or so of torsion Beam weight makes the further lightweight of torsion beam.

Preferably, spring tray includes supporting plate and lateral coaming plate, spring is arranged on supporting plate, the supporting plate close to crossbeam and The side of trailing arm is welded and fixed with crossbeam and trailing arm, and side of the supporting plate far from crossbeam and trailing arm is welded and fixed with lateral coaming plate, described The both ends of lateral coaming plate are welded and fixed with crossbeam and trailing arm respectively.

Preferably, forearm and postbrachium are homogeneity integral structure, forearm is the 70% to 85% of rear arm lengths, boss plate It is welded with postbrachium rear end face, the area (i.e. the mounting surface area of wheel hub) of boss plate is the 3.2 to 4.8 of postbrachium rear end face area Times.Compared with prior art, the forearm of the utility model is not much different with rear arm lengths, and the structure for being conducive to torsion beam is flat Weighing apparatus.

The beneficial effects of the utility model are: 1, trailing arm is optimized for arc, shorten the length of crossbeam, alleviate torsion The weight of beam and the structural member arrangement for being conducive to trailing arm rear and front end；2, hub bracket is optimized for boss plate, alleviates torsion The weight of beam increases the structural strength of wheel hub installation place；3, the damper being directly installed on postbrachium is optimized for being mounted on On damper bracket, the length of postbrachium is shortened, alleviates the weight of torsion beam.The lightweight torsion girder construction of the utility model 5 kilograms of weight or so can be reduced, to improve suspension response speed, promotes the security performance of automobile, is had very high practical Value.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of the utility model lightweight torsion beam；

Fig. 2 is a kind of structural schematic diagram of prior art torsion beam.

In figure: 1. crossbeams, 2. trailing arms, 3. forearms, 4. postbrachiums, 5. spring trays, 6. dampers, 7. axle sleeves, 8. rear end faces, 9. boss plate, 10 contraction flow regions, 11. rubber bushings, 12. fixing bolts, 13. damper brackets, 14. supporting plates, 15. lateral coaming plates, 16. Spring, 17. hub brackets.

Specific embodiment

The embodiments of the present invention is further detailed below by way of examples and with reference to the accompanying drawings.

Embodiment 1

In embodiment 1 shown in Fig. 1, a kind of lightweight torsion girder construction, the torsion beam includes crossbeam 1 and is fixed on Two trailing arms 2 at crossbeam both ends, the outside arcuate structure in the trailing arm generally concave surface (is directed toward two side directions of automobile), horizontal The middle part fixation of beam and trailing arm and two trailing arms are symmetrical arranged relative to the center cross-sectional of the crossbeam, and the trailing arm includes The front end of forearm 3 on front side of crossbeam center line and the postbrachium 4 on rear side of crossbeam center line, forearm is equipped with axle sleeve 7, institute State that axle sleeve is cylindrical, the center line of axle sleeve is vertical with the front end of the forearm, and the front end of forearm is equipped with contraction flow region 10, institute Contraction flow region is stated to be welded and fixed with axle sleeve；It is equipped with rubber bushing 11 in axle sleeve, is equipped with fixing bolt 12 in rubber bushing, it is described solid Determine bolt and passes through rubber bushing and the swingable connection of axle sleeve.The rear end of postbrachium is formed with parallel with the center cross-sectional of the crossbeam Rear end face 8, be fixed with the boss plate 9 parallel with rear end face on the rear end face, the area of the boss plate be greater than it is described after The area of end face.The inside of the junction of crossbeam and postbrachium is equipped with spring tray 5, and the spring tray includes supporting plate 14 and side Coaming plate 15, spring 16 are arranged on supporting plate, and the supporting plate is welded and fixed close to the side of crossbeam and trailing arm and crossbeam and trailing arm, support Side of the plate far from crossbeam and trailing arm is welded and fixed with lateral coaming plate, and the both ends of the lateral coaming plate are solid with crossbeam and trailing arm welding respectively It is fixed.Damper bracket 13 is equipped between the rear lateral portion of spring tray and the rear portion of postbrachium, damper 6 is arranged in damper bracket On, the damper bracket is U-shaped structure, and one end of damper bracket and the rear lateral portion of spring tray are welded and fixed, damper The other end of bracket and the posterior medial of postbrachium are welded and fixed, and the U-shaped structure horizontal direction of damper bracket is equipped with fixing axle, institute The damper stated is arranged in fixing axle.

The present embodiment forearm and postbrachium are homogeneity integral structure, and forearm is the 78% of rear arm lengths, boss plate and postbrachium Rear end face welding, the area of boss plate is 4 times of postbrachium rear end face area.

The outside arcuate structure in the trailing arm of the utility model generally concave surface, this structural beams are relatively short, weight compared with Structural member arrangement that is light and being conducive to trailing arm rear and front end；Secondly, the rear end of the utility model postbrachium is formed with and the crossbeam The parallel rear end face of center cross-sectional, the and direct stationary hub plate on the rear end face takes with the boss plate of lighter in weight For the boss plate of heavier-weight, the overall weight of torsion beam is alleviated, while boss plate is directly connect with postbrachium, increases wheel hub The structural strength of installation place.In addition, the damper being directly installed in the prior art on postbrachium is changed to be mounted on damper branch On frame, this substantially reduces the length of postbrachium, make the further lightweight of torsion beam.Compared with existing torsion beam, this The torsion beam of utility model can reduce by 5 kilograms or so of weight, to realize the lightweight of torsion beam.

In addition to the implementation, in the range disclosed in claims of the utility model and specification, this is practical Novel technical characteristic or technical data can be reselected and be combined, to constitute new embodiment, these are all these Field technical staff is without carrying out what creative work can be realized, therefore the implementation that these the utility model are not described in Example also should be regarded as specific embodiment of the utility model and be within the protection scope of the utility model.

Claims (7)

1. a kind of lightweight torsion girder construction, which is characterized in that the torsion beam includes crossbeam (1) and is fixed on crossbeam both ends Two trailing arms (2), the outside arcuate structure in the trailing arm generally concave surface, middle part fixation and two trailing arm phases of the crossbeam with trailing arm The center cross-sectional of the crossbeam is symmetrical arranged, the trailing arm include forearm (3) on front side of the crossbeam center line and The inside of the junction of postbrachium (4) on rear side of crossbeam center line, crossbeam and postbrachium is equipped with spring tray (5), spring tray Rear side be equipped with damper (6)；The front end of forearm is equipped with axle sleeve (7), and the rear end of postbrachium is formed with the center with the crossbeam The parallel rear end face in cross section (8) is fixed with the boss plate parallel with rear end face (9) on the rear end face, the boss plate Area is greater than the area of the rear end face.

2. lightweight torsion girder construction according to claim 1, which is characterized in that the front end of the forearm, which is equipped with, shrinks Portion (10), the axle sleeve is cylindrical, and the center line of axle sleeve is vertical with the front end of the forearm, and the forearm and axle sleeve weld It is fixed.

3. lightweight torsion girder construction according to claim 1, which is characterized in that rubber bushing (11) are equipped in axle sleeve, It is equipped in rubber bushing fixing bolt (12), the fixing bolt passes through rubber bushing and the swingable connection of axle sleeve.

4. lightweight torsion girder construction according to claim 1, which is characterized in that the rear lateral portion of the spring tray is with after Damper bracket (13) are equipped between the rear portion of arm, the damper is arranged on damper bracket.

5. lightweight torsion girder construction according to claim 4, which is characterized in that the damper bracket is U-shaped structure, One end of damper bracket and the rear lateral portion of spring tray are welded and fixed, the other end of damper bracket and the posterior medial of postbrachium It is welded and fixed, the U-shaped structure horizontal direction of damper bracket is equipped with fixing axle, and the damper is arranged in fixing axle.

6. lightweight torsion girder construction according to claim 1, which is characterized in that the spring tray includes supporting plate (14) and lateral coaming plate (15), spring (16) are arranged on supporting plate, and the supporting plate is close to the side of crossbeam and trailing arm and crossbeam and indulges Arm is welded and fixed, and side of the supporting plate far from crossbeam and trailing arm is welded and fixed with lateral coaming plate, the both ends of the lateral coaming plate respectively with cross Beam and trailing arm are welded and fixed.

7. lightweight torsion girder construction according to claim 1-6, which is characterized in that forearm is homogeneity with postbrachium Integral structure, forearm are the 70% to 85% of rear arm lengths, and boss plate and postbrachium rear end face weld, after the area of boss plate is 3.2 to 4.8 times of arm rear end face area.