CN202608498U

CN202608498U - Rear torsion beam type semi-independent suspension with torsion bar for automobile

Info

Publication number: CN202608498U
Application number: CN2012202422080U
Authority: CN
Inventors: 龚成斌; 胡礼; 李勣; 王存杰; 胡少洪; 成永平
Original assignee: JIAN'AN REAR AXLE AUTOMOBILE CO Ltd CHINA CHANG'AN SICHUAN BRANCH
Current assignee: JIANAN INDUSTRY Co Ltd SICHUAN PROV
Priority date: 2012-05-28
Filing date: 2012-05-28
Publication date: 2012-12-19
Anticipated expiration: 2022-05-28

Abstract

The utility model discloses a rear torsion beam type semi-independent suspension with a torsion bar for an automobile, which ensures that stress concentration does not happen on reinforcements easily. The suspension comprises a torsion beam, wherein longitudinal arms are welded at the two ends of the torsion beam; the torsion bar welded with the longitudinal arms is arranged on the torsion beam; reinforcements are arranged at the welding part of the torsion beam and the longitudinal arms; each reinforcement comprises an arc plate part and a straight plate part; the straight plate parts are welded with the longitudinal arms; the arc plate parts are welded with the torsion beam; through holes for allowing the torsion bar to pass through are formed in the arc plate parts; and gaps are formed between the torsion bar and the reinforcements. As the torsion bar passes through the through holes, rather than U-shaped openings in the prior art, the stress concentration around the through holes and on the entire reinforcements can be effectively avoided, and long-term stable operation of a vehicle can be ensured.

Description

The semi-independent suspension of automobile retrotorsion beam of band torsion bar

Technical field

The utility model relates to the semi-independent suspension of automobile retrotorsion beam that a kind of automobile manufacturing field is used.

Background technology

In the prior art, the semi-independent suspension of torsion girder-like comprises the torsion beam of a single-piece V-arrangement or channel section, and the torsion beam two ends are welded with left and right sides trailing arm respectively.Torsion beam is provided with the torsion bar with the trailing arm welding, and the weld of torsion beam and trailing arm is provided with reinforcement.At present, above-mentioned reinforcement at one end has the U-shaped mouth that supplies torsion bar to pass.This structure can cause the mouth bottom stress concentration of above-mentioned U type mouth, occurs cracking easily.There is bigger potential safety hazard.

The utility model content

The technical matters that the utility model solves provides the semi-independent suspension of automobile retrotorsion beam of the band torsion bar that is not prone to the stress concentration phenomenon on a kind of reinforcement.

The utility model solves the technical scheme that its technical matters adopted: the semi-independent suspension of automobile retrotorsion beam of band torsion bar; Comprise torsion beam, the trailing arm of torsion beam two ends welding, torsion beam is provided with the torsion bar with the trailing arm welding; The weld of torsion beam and trailing arm is provided with reinforcement; Said reinforcement comprises arc board and straight plate part, said straight plate part and trailing arm welding, arc board and torsion beam welding; Said arc board is provided with the through hole that supplies said torsion bar to pass, and is provided with the gap between said torsion bar and the reinforcement.

The beneficial effect of the utility model is: because the structure that supplies torsion bar to pass is a through hole, but not therefore U-shaped opening of the prior art can effectively be avoided the stress concentration phenomenon occurring around the through hole and on the whole reinforcement.Thereby can guarantee the operation that vehicle is steady in a long-term.

Description of drawings

Fig. 1 is the front view of the reinforcement of the utility model;

Fig. 2 is the lateral plan of the reinforcement of the utility model;

Fig. 3 is that the position of reinforcement and torsion bar concerns scheme drawing;

Be labeled as among the figure: reinforcement 1, torsion bar 2, torsion beam 3, trailing arm 4, arc board 11, straight plate part 12, through hole 13.

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is further specified.

To shown in Figure 3, the semi-independent suspension of automobile retrotorsion beam of band torsion bar comprises torsion beam 3 like Fig. 1; The trailing arm 4 of torsion beam 3 two ends welding; Torsion beam 3 is provided with the torsion bar 2 with trailing arm 4 welding, and torsion beam 3 is provided with reinforcement 1 with the weld of trailing arm 4, and said reinforcement 1 comprises arc board 11 and straight plate part 12; Said straight plate part 12 and trailing arm 4 welding; Arc board 11 and torsion beam 3 welding, said arc board 11 is provided with the through hole 13 that supplies said torsion bar 2 to pass, and is provided with the gap between said torsion bar 2 and the reinforcement 1.As depicted in figs. 1 and 2, above-mentioned reinforcement 1 comprises that arc board 11 is in order to step down for torsion bar 2 through above-mentioned through hole 13 is set, to make torsion bar 2 can pass through hole 13 and trailing arm 4 welding above that.So neither influence the setting of torsion bar 2, also do not influence the setting of reinforcement 1.Be provided with the gap between above-mentioned torsion bar 2 and the reinforcement 1, be meant that torsion bar 2 does not contact with whole reinforcement 1, can prevent like this to make torsion bar 2 or reinforcement 1 that unnecessary damage take place because of the mutual action of reinforcement 1 and torsion bar 2.

Claims

1. be with the semi-independent suspension of automobile retrotorsion beam of torsion bar; Comprise torsion beam (3), the trailing arm (4) of torsion beam (3) two ends welding, torsion beam (3) is provided with the torsion bar (2) with trailing arm (4) welding; Torsion beam (3) is provided with reinforcement (1) with the weld of trailing arm (4); It is characterized in that: said reinforcement (1) comprises arc board (11) and straight plate part (12), said straight plate part (12) and trailing arm (4) welding, arc board (11) and torsion beam (3) welding; Said arc board (11) is provided with the through hole (13) that supplies said torsion bar (2) to pass, and is provided with the gap between said torsion bar (2) and the reinforcement (1).