CN202046172U

CN202046172U - Torsion beam semi-independent suspension for automobile

Info

Publication number: CN202046172U
Application number: CN201120139685XU
Authority: CN
Inventors: 彭文华; 杨忠学; 陈海; 洪桓桓; 陈正康; 何维聪; 龚成斌; 王存杰; 胡礼; 李勣; 胥洪鑫
Original assignee: JIAN'AN REAR AXLE AUTOMOBILE CO Ltd CHINA CHANG'AN SICHUAN BRANCH
Current assignee: JIAN'AN REAR AXLE AUTOMOBILE CO Ltd CHINA CHANG'AN SICHUAN BRANCH
Priority date: 2011-05-05
Filing date: 2011-05-05
Publication date: 2011-11-23
Anticipated expiration: 2021-05-05

Abstract

The utility model discloses a torsion beam semi-independent suspension for an automobile, mainly discloses the torsion beam semi-independent suspension suitable for a light-duty automobile or a car, and belongs to the technical field of automobile manufacturing. Provided is the torsion beam semi-independent suspension in which joint strength of connecting parts between a crossbeam and trailing arms is stable and reliable. The torsion beam semi-independent suspension comprises the crossbeam of which a cross section has a V-shaped or U-shaped structure and trailing arms arranged at two ends of the crossbeam, wherein the connecting parts between the crossbeam and the trailing arms are provided with crossbeam trailing arm reinforcement pieces, and the crossbeam and the trailing arms are connected by the crossbeam trailing arm reinforcement pieces.

Description

The semi-independent suspension of a kind of automobile torsion beam

Technical field

The utility model relates to the semi-independent suspension of a kind of automobile torsion beam, mainly is the semi-independent suspension of torsion beam that is applicable to lilliput car or car, belongs to car production manufacturing technology field.

Background technology

The semi-independent suspension of torsion beam is a rear overhang hanging hang structure commonly used at present, and in lilliput car or car, it constitutes the trailing arm weld together of the left and right sides by the crossbeam of a single-piece V-type or U type section usually.The front end of trailing arm is made the strand formula by the rubber-metal supporting with vehicle body and is connected, and the rear end links to each other with wheel hub, bumper and spring.Like this, trailing arm can swing up and down so that by bumper and damping spring absorbing vibration, play the effect of shock-absorbing around rigid point of connection, and therefore, suspension is related to the handling and traveling comfort of vehicle.When the distortion of suspension both sides did not wait, the crossbeam distortion that twists because of crossbeam has bigger elasticity, can be played the effect of stabilizer antiroll bar, so crossbeam is the critical component in the semi-independent suspension of torsion girder-like, played power transmission, stressed and the effect that is connected the balance both sides.When crossbeam twists distortion, trailing arm can't make corresponding changes owing to be subjected to the restriction of vehicle body, wheel hub, bumper and spring, so just, form stress concentration at crossbeam and trailing arm bonded assembly weld zone, add, crossbeam is being welded on the trailing arm perpendicular to the trailing arm longitudinal centerline directly, the Joint strenght of junction is not high, in the turning operating mode and reverse in the stand test, be easy to make crossbeam and trailing arm to fracture at this weld zone, shorten the service life of the semi-independent suspension of torsion beam greatly, increased the probability that safety misadventure takes place.

The utility model content

Technical problem to be solved in the utility model is: provide a kind of crossbeam and trailing arm at the reliable and stable semi-independent suspension of automobile torsion beam of the Joint strenght of junction.

The technical scheme that adopts for solving the problems of the technologies described above is: the semi-independent suspension of a kind of automobile torsion beam, comprise the crossbeam of the V-shaped or U type structure of cross-sectional plane and be installed in the trailing arm at crossbeam two ends, also be provided with crossbeam trailing arm reinforcement in the junction of crossbeam and trailing arm, also connect between crossbeam and the trailing arm by crossbeam trailing arm reinforcement.

Further be that crossbeam trailing arm reinforcement is the upper reinforcing plate of a quadrilateral structure; The quadrangle upper reinforcing plate has a long limit that links to each other with beam surface upper, and with a minor face that links to each other with the trailing arm upper surface, long limit is adjacent with minor face, and the angle that its angle and crossbeam and trailing arm constitute is suitable.

The optimal way of such scheme is, also is provided with beyond in trailing arm entablatrance installation site with crossbeam to be positioned at spring perch with the same face, and the quadrangle upper reinforcing plate also has a connection side adjacent with minor face, and connection side links to each other with spring perch.

Further be, the quadrangle upper reinforcing plate also has a free edge that connects long limit and connection side, and this free edge is arc structure, and its arc radius R is greater than 350mm.

Further be to be welded to connect between crossbeam trailing arm brace panel and crossbeam and the trailing arm.

The beneficial effects of the utility model are: by the junction at crossbeam and trailing arm one crossbeam trailing arm reinforcement is set again, make between crossbeam and the trailing arm except directly being welded to connect, also adding part by the crossbeam trailing arm connects, increased the Joint strenght of crossbeam and trailing arm greatly, make being connected of crossbeam and trailing arm reliable and stable, can be in turn operating mode and reversing in the stand test of postorder, just fracture easily from the weld zone of crossbeam and trailing arm, having prolonged significantly with crossbeam and trailing arm is the service life of the main semi-independent suspension of torsion beam that constitutes, and has reduced the probability that safety misadventure takes place.

Description of drawings

Fig. 1 is the front view of the semi-independent suspension of a kind of automobile torsion beam of the utility model;

Fig. 2 is the A-A cutaway view of Fig. 1.

Be labeled as among the figure: crossbeam 1, trailing arm 2, crossbeam trailing arm reinforcement 3, long limit 31, minor face 32, connection side 33, free edge 34, spring perch 4.

The specific embodiment

Be that a kind of crossbeam that provides of the utility model and trailing arm are at the reliable and stable semi-independent suspension of automobile torsion beam of the Joint strenght of junction as shown in Figure 1 and Figure 2.The semi-independent suspension of described torsion beam comprises the crossbeam 1 of the V-shaped or U type structure of cross-sectional plane and is installed in the trailing arm 2 at crossbeam 1 two ends, also be provided with crossbeam trailing arm reinforcement 3 in the junction of crossbeam and trailing arm 2, also connect between crossbeam 1 and the trailing arm 2 by crossbeam trailing arm reinforcement 3.After adopting described connection structure, between crossbeam 1 and the trailing arm 2 except directly being welded to connect, also adding part 5 by the crossbeam trailing arm connects, increased the Joint strenght of crossbeam 1 and trailing arm 2 greatly, make crossbeam 1 reliable and stable with being connected of trailing arm 2, can be in turn operating mode and reversing in the stand test of postorder, just fracture easily from the weld zone of crossbeam 1 and trailing arm 2, having prolonged significantly with crossbeam 1 and trailing arm 2 is the service life of the main semi-independent suspension of torsion beam that constitutes, and has reduced the probability that safety misadventure takes place.

For the structure that makes crossbeam trailing arm reinforcement 3 the simplest, so that reduce manufacture difficulty as far as possible, save production cost, simultaneously, in conjunction with the structure and the stressing conditions of the semi-independent suspension of torsion beam, described crossbeam trailing arm reinforcement 3 is the upper reinforcing plate of a quadrilateral structure again; The quadrangle upper reinforcing plate has a long limit 31 that links to each other with crossbeam 1 upper surface, and with a minor face 32 that links to each other with trailing arm 2 upper surfaces, long limit 31 is adjacent with minor face 32, and the angle that its angle and crossbeam 1 and trailing arm 2 constitute is suitable.So just, can make crossbeam trailing arm reinforcement 3 both play the purpose of the Joint strenght of deep beam and trailing arm, can make the structure of crossbeam trailing arm reinforcement 3 the simplest again, reach and reduce manufacture difficulty to greatest extent, the purpose that saves production cost.Also be provided with beyond in trailing arm 1 entablatrance 2 installation sites with crossbeam 2 and be positioned at the spring perch that is used for mounting spring 4 of the same face together, in order to make crossbeam trailing arm reinforcement 3 except the junction of crossbeam 1 and trailing arm 2 is strengthened, can also play booster action to spring perch 4, the quadrangle upper reinforcing plate also has a connection side 33 adjacent with minor face 32, and connection side 33 links to each other with spring perch 4.Such crossbeam trailing arm reinforcement 3 just can couple together position relatively weak on the semi-independent suspension of torsion beam, except that playing booster action, can also play the effect of the stability that increases spring perch 4.

Make for convenience, be welded to connect between crossbeam trailing arm brace panel 3 and crossbeam 1 and the trailing arm 2.Like this, when increasing crossbeam trailing arm reinforcement 3 between crossbeam 1 and trailing arm 2, the suitable position welding that only needs crossbeam trailing arm reinforcement 3 to be assembled to crossbeam 1 and trailing arm 2 gets final product, and is easy to make, quick, the production efficiency height.After the junction of crossbeam 1 and trailing arm 2 welding beam trailing arm reinforcement 3, in order to reduce the stress of crossbeam trailing arm reinforcement 3 and crossbeam 1, trailing arm 2 position of weld, the free edge 34 of long limit 31 and connection side 33 will be connected on the quadrangle upper reinforcing plate, be made into arc structure, and make its arc radius R greater than 350mm, in order to the local strength of reduction crossbeam trailing arm reinforcement 3 itself, reduce the stress of position of weld.Like this, just can so that the stress transition preferably of crossbeam trailing arm reinforcement 3 itself with redistribute, avoided occurring the phenomenon of stress concentration, improved safety factor greatly; Simultaneously, can also make the roll steer performance of the semi-independent suspension of torsion beam be improved, avoid to occur in the turning operating mode phenomenon of negative understeer.

Claims

1. semi-independent suspension of automobile torsion beam, comprise the crossbeam (1) of the V-shaped or U type structure of cross-sectional plane and be installed in the trailing arm (2) at crossbeam (1) two ends, it is characterized in that: the junction at crossbeam and trailing arm (2) also is provided with crossbeam trailing arm reinforcement (3), also connects by crossbeam trailing arm reinforcement (3) between crossbeam (1) and the trailing arm (2).

2. the semi-independent suspension of a kind of automobile torsion beam according to claim 1, it is characterized in that: crossbeam trailing arm reinforcement (3) is the upper reinforcing plate of a quadrilateral structure; The quadrangle upper reinforcing plate has a long limit (31) that links to each other with crossbeam (1) upper surface, with a minor face (32) that links to each other with trailing arm (2) upper surface, long limit (31) is adjacent with minor face (32), and the angle that its angle and crossbeam (1) and trailing arm (2) constitute is suitable.

3. the semi-independent suspension of a kind of automobile torsion beam according to claim 2, it is characterized in that: also be provided with the spring perch (4) that is positioned at same the same face with crossbeam (2) beyond in trailing arm (1) entablatrance (2) installation site, the quadrangle upper reinforcing plate also has a connection side (33) adjacent with minor face (32), and connection side (33) links to each other with spring perch (4).

4. according to claim 2 or the semi-independent suspension of 3 described a kind of automobile torsion beam, it is characterized in that: the quadrangle upper reinforcing plate also has a free edge (34) that connects long limit (31) and connection side (33), this free edge (34) is arc structure, and its arc radius R is greater than 350mm.

5. the semi-independent suspension of a kind of automobile torsion beam according to claim 4 is characterized in that: be welded to connect between crossbeam trailing arm brace panel (3) and crossbeam (1) and the trailing arm (2).

6. according to the semi-independent suspension of each described a kind of automobile torsion beam in the claim 1～3, it is characterized in that: be welded to connect between crossbeam trailing arm brace panel (3) and crossbeam (1) and the trailing arm (2).