CN201472102U

CN201472102U - Automobile suspension torsion beam rear axle device

Info

Publication number: CN201472102U
Application number: CN200920161433XU
Authority: CN
Inventors: 李书福; 杨健; 赵福全; 徐荣峰
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely Automobile Research Institute Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely Automobile Research Institute Co Ltd
Priority date: 2009-07-06
Filing date: 2009-07-06
Publication date: 2010-05-19
Anticipated expiration: 2019-07-06

Abstract

The utility model belongs to an automobile suspension rear axle device, particularly relates to a suspension torsion beam rear axle device provided with a spring tray, and provides an automobile suspension torsion beam rear axle device with light mass, simple technique and high connection strength. The automobile suspension torsion beam rear axle device comprises a torsion beam and a trailing arm connected with the end part of the torsion beam, and is characterized in that the torsion beam is provided with a U-shaped section; the trailing arm is a round pipe arm; the connection position of the trailing arm and the end part of the torsion beam is fixedly connected with the spring tray; and the spring tray is positioned at the side opposite to a U-shaped opening. In the utility model, the torsion beam is formed by integrally stamping a steel plate and provided with the U-shaped section, the automobile suspension rear axle device is characterized by high precision of dimension, strong stability and light weight, and can realize the light weight of the finished automobile; the lapping of the spring tray and the U-shaped torsion beam is full and firm, thus ensuring the firmness of lapping of the torsion beam with the spring tray during running process when in twisting.

Description

Biodge device after a kind of automobile usefulness suspension torsion beam

Technical field

The utility model belongs to Biodge device behind a kind of suspension of automobile, Biodge device after particularly a kind of suspension torsion beam that spring tray is installed.

Background technology

Along with rapid economic development, it is more and more faster that living standards of the people improve speed, automobile is as a kind of important vehicle, huge numbers of families have been entered, and Biodge device is one of assembly indispensable on the automobile behind the suspension on the automobile, behind the automotive suspension Biodge device comprise torsion beam and with torsion beam bonded assembly trailing arm, existing torsion beam is most for being welded, having high input of its mould, the complex technical process of welding, production cost is bigger, and the weight of whole back axle and even car load is all bigger.

At present, in many back axle suspension types of automobile, many employings is that cost is higher on the high-grade car, take up room bigger active or semi-active suspension carries out the vehicle body posture adjustment, and for exquisite economical and practical most of low and middle-grade automobiles, many employings is passive suspension frame structure on its back axle draft hitch, and the coil spring in the passive suspension frame structure all is mounted on the fixing spring tray, and spring tray is installed on the automobile axle again.In the process of running car, vehicle must shake, thereby under the prerequisite of the stability that guarantees vehicle, guarantees the Joint strenght of spring tray and automobile axle again, for the fixed form of spring tray exacting requirements has just been arranged.

Summary of the invention

The purpose of this utility model is to have the problems referred to above at existing technology, proposed a kind of quality is light, technology is simple, Joint strenght is high automobile with the suspension torsion beam after Biodge device.

The purpose of this utility model can realize by following technical proposal: Biodge device after a kind of automobile usefulness suspension torsion beam, comprise torsion beam and with its end bonded assembly trailing arm, it is characterized in that described torsion beam has the cross section of U-shaped, described trailing arm is the round tube arm, be overlapped with spring tray on the junction of trailing arm and torsion beam end, spring tray is fixed in the oppositely directed outside of U-shaped opening in the torsion beam.

Torsion beam in the utility model forms the torsion beam in the cross section with U-shaped for the steel plate integrated punching, and it has the dimensional accuracy height, and stability is strong, and the characteristics that weight is light can realize the lightweight of car load; Simultaneously, reduced part number and welding capacity, reduced the input of mould because this torsion beam is formed in one, relative saving productive costs.

In the Biodge device, the U-shaped opening direction of described torsion beam is that level is towards the car open front after above-mentioned automobile is with the suspension torsion beam.Because spring tray is arranged on the rear portion of car load, if with the opening direction of U-shaped behind car or down, the overlap joint of spring tray and torsion beam will exist inconvenience or unstable shortcoming.The technical program can make spring tray fully contact with the U-shaped bottom of torsion beam forward the U-shaped opening, but actv. is avoided above-mentioned defective.

After above-mentioned automobile is with the suspension torsion beam, in the Biodge device, be shaped on the arc groove identical on the end of the described torsion beam that is connected with trailing arm with the surperficial radian of trailing arm.Both radians are identical, can be so that torsion beam and trailing arm be more fitted, and its welding precision height can strengthen weld strength and increase fastness by actv..

After above-mentioned automobile is with the suspension torsion beam in the Biodge device, the back side of the U-shaped bottom of described torsion beam is made as arc surface, be shaped on the affixed torsion beam bonding jumper in the back side on the described spring tray with the U-shaped of torsion beam bottom, the affixed connecting portion of itself and torsion beam is made as circular-arc, and the radian of this circular arc is identical with the radian at the back side of the U-shaped of torsion beam bottom.Circular-arc bonding jumper can fully be fitted with the back side of the U-shaped of torsion beam bottom, and its welding precision height can strengthen weld strength and increase fastness by actv..

In the Biodge device, be shaped on the trailing arm bonding jumper affixed with trailing arm on the described spring tray after above-mentioned automobile is with the suspension torsion beam, its position that is connected with trailing arm is made as circular-arc, and the radian of this circular arc is identical with the surperficial radian of trailing arm.Circular-arc bonding jumper can fully be fitted with the trailing arm of circle, and the welding precision height can strengthen weld strength and increase fastness.

After above-mentioned automobile is with the suspension torsion beam, in the Biodge device, be shaped on the auxiliary bonding jumper affixed on the described spring tray with torsion beam.Should extra Joint strenght be can provide by auxiliary bonding jumper, the stability and the safety of Biodge device after whole automobile is with the suspension torsion beam guaranteed.

In the Biodge device, described trailing arm is symmetrical a pair of trailing arm, is connected with the two ends of torsion beam respectively after above-mentioned automobile is with the suspension torsion beam.

In the Biodge device, described spring tray is symmetrical a pair of pallet after above-mentioned automobile is with the suspension torsion beam.

Compared with prior art, Biodge device adopts the torsion beam agent structure of steel plate integrated punching moulding after this automobile usefulness suspension torsion beam, under the intensity prerequisite that guarantees torsion beam, makes that again quality is light, manufacturing process is simple, thereby has reduced operation and the cost produced.The circular-arc design of the bonding jumper of spring tray has guaranteed itself and fully the contacting of torsion beam and trailing arm, and through the CAE stress analysis, the phenomenon of stress concentration does not all appear in the lap-joint at spring tray and torsion beam place, satisfied the weld strength requirement.Thereby in vehicle traveling process,, also can guarantee when torsion beam is reversed and the fastness of spring tray overlap joint even when the back axle suspension is beated.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the U-shaped schematic cross-section of torsion beam.

Among the figure, 1, torsion beam; 2, trailing arm; 3, spring tray; 3a, torsion beam bonding jumper; 3b, trailing arm bonding jumper; 3c, auxiliary bonding jumper.

The specific embodiment

Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.

With reference to accompanying drawing, the U-shaped torsion beam of torsion beam 1 for forming by the steel plate integrated punching, the surface of its U-shaped bottom is made as arc surface, and its cross section is as shown in Figure 2.The U-shaped bottom at the two ends of torsion beam 1 is made as the arc groove shape, and its radian is identical with the radian of round tubular trailing arm 2.Trailing arm 2 is symmetrical a pair of, and two trailing arms 2 are welded on the two ends of torsion beam 1 respectively, promptly is positioned at the arc groove of the two ends setting of torsion beam 1, and both can fully fit, firmly welding.Two trailing arms 2 are connected with the two ends of torsion beam 1 respectively, and respectively being overlapped with 3, two spring trays 3 of a spring tray on the junction at its two ends is symmetrical structure each other.Be shaped on bonding jumper on each spring tray 3 with trailing arm 2 and torsion beam 1 overlap joint, be respectively the torsion beam bonding jumper 3a and the auxiliary bonding jumper 3c that are used for torsion beam 1 overlap joint, and be used for trailing arm bonding jumper 3b with trailing arm, wherein torsion beam bonding jumper 3a overlaps mutually with the back side of the U-shaped bottom of torsion beam 1, it is circular-arc that torsion beam bonding jumper 3a and the position that is connected of torsion beam 1 are made as, and this circular arc has and U-shaped bottom identical radian measure; The tubular surface of trailing arm bonding jumper 3b and trailing arm 2 overlap joint, trailing arm bonding jumper 3b are gone up and are made as circular-arcly with the position that is connected of trailing arm 2, and this circular arc has the circular arc with the surperficial identical radian measure of trailing arm; Auxiliary bonding jumper 3c is horizontal schistose texture, direct and torsion beam 1 overlap joint.

Specific embodiment described herein only is that the utility model spirit is made casehistory.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although this paper has used terms such as torsion beam 1, trailing arm 2, spring tray 3, torsion beam bonding jumper 3a, trailing arm bonding jumper 3b, auxiliary bonding jumper 3c morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.

Claims

An automobile with the suspension torsion beam after Biodge device, comprise torsion beam (1) and with its end bonded assembly trailing arm (2), it is characterized in that described torsion beam (1) has the cross section of U-shaped, described trailing arm (2) is the round tube arm, be connected with spring tray (3) on the junction of trailing arm (2) and torsion beam (1) end, spring tray (3) is positioned at a reverse side of U-shaped opening.
2. Biodge device after a kind of automobile usefulness suspension torsion beam according to claim 1, the U-shaped opening direction that it is characterized in that described torsion beam (1) is that level is towards the car open front.
3. Biodge device after a kind of automobile usefulness suspension torsion beam according to claim 1 and 2 is characterized in that, is shaped on the identical arc groove of surperficial radian with trailing arm (2) on the end of the described torsion beam (1) that is connected with trailing arm (2).
4. Biodge device after a kind of automobile usefulness suspension torsion beam according to claim 3, it is characterized in that, the back side of the U-shaped bottom of described torsion beam (1) is made as arc surface, be shaped on the affixed torsion beam bonding jumper (3a) in the back side on the described spring tray (3) with the U-shaped of torsion beam (1) bottom, the affixed connecting portion of itself and torsion beam (1) is made as circular-arc, and the radian of this circular arc is identical with the radian at the back side of the U-shaped bottom of torsion beam (1).
5. Biodge device after a kind of automobile usefulness suspension torsion beam according to claim 1, it is characterized in that, be shaped on the described spring tray (3) and the affixed trailing arm bonding jumper (3b) of trailing arm (2), its position that is connected with trailing arm (2) is made as circular-arc, and the radian of this circular arc is identical with the surperficial radian of trailing arm (2).
6. Biodge device after a kind of automobile usefulness suspension torsion beam according to claim 3 is characterized in that, is shaped on the described spring tray (3) and the affixed auxiliary bonding jumper (3c) of torsion beam (1).
7. Biodge device after a kind of automobile usefulness suspension torsion beam according to claim 1 is characterized in that described trailing arm (2) is symmetrical a pair of trailing arm, and the two ends with torsion beam (1) are connected respectively.
8. according to Biodge device after claim 1 or 4 or the 5 or 6 described a kind of automobiles usefulness suspension torsion beam, it is characterized in that described spring tray (3) is symmetrical a pair of pallet.