CN203211044U

CN203211044U - Rear torsion beam

Info

Publication number: CN203211044U
Application number: CN 201320127475
Authority: CN
Inventors: 符星; 苏业丰; 符滞豪; 陈立忠
Original assignee: Wanxiang Group Corp
Current assignee: Wanxiang Group Corp; Zhejiang Wanxiang System Co Ltd
Priority date: 2013-03-19
Filing date: 2013-03-19
Publication date: 2013-09-25
Anticipated expiration: 2023-03-19

Abstract

The utility model relates to a rear torsion beam which comprises a cross beam and a harmonic vibration block, wherein a support arm assembly is assembled and welded on two sides of the cross beam; a reinforcing plate is additionally welded at a connecting part of the cross beam and the support arm assembly; the harmonic vibration block is welded at the middle of the lower end of the cross beam; and the cross beam is V-shaped and provided with a downward opening. The rear torsion beam has the beneficial effects that (1) the cross beam of the rear torsion beam is changed from being U-shaped to V-shaped, so that the advantage of easy impact molding is achieved while the cross beam is difficult to deform and the like; (2) during the assembling and welding process of a rear torsion beam assembly, the cross beam is difficult to deform because the cross beam is V-shaped, so that the cross beam can be easily assembled and welded with the support arm assembly; and (3) the process that a fracturing strap at the punching and cutting edge of the cross beam is polished is not required, so that the working intensity of a site operator and the production cost are lowered. In addition, the performance stability of the rear torsion beam is ensured.

Description

A kind of back torsion beam

Technical field

The utility model relates to running car system technical field, relates in particular to a kind of back torsion beam.

Background technology

Back torsion beam belongs to running car system parts, is that rear overhang mounts and puts a kind of of type, mainly is bearing automobile rear portion load, the bob of balance left and right sides rear wheel, to reduce rocking of vehicle, keep vehicle steadily.

In the car load assembling was arranged, the lining position of back torsion beam was assemblied on the vehicle body, and the drg mounting bracket part of back torsion beam is installed with rear brake and tire and is connected, and the trailing arm place of back torsion beam is connecting damping spring.When automobile travelled on the poor road surface of road conditions, back torsion beam can twist action along with the bob of rear wheel up and down, to huge test is afterwards arranged the service life of torsion beam.

Now using in the structure, the crossbeam of back torsion beam is to be " U " type shape and side assembly welding, and there is the R limit both sides of crossbeam and trailing arm welding, mainly plays to avoid both sides stress to occur concentrating and cause the crossbeam both sides effect of fracture to occur.And in reality driving process, because some road conditions is relatively poor, it is excessive that back torsion beam does to twist up and down action, so just often causes the back torsion beam to lose efficacy.So in order to address this problem, we groups of related items group member discusses analysis with main engine plants' person skilled, such problem why occurring is because the cutting edge of crossbeam upper punch has fault zone.We constantly verify and have formulated final solution to this: carry out the thickness polishing on the stamping-out limit of crossbeam with sander machine earlier, top fault zone is removed clean; Carry out grinding and polishing with oilstone on crossbeam two stamping-out limits then, and grind the R angle on the stamping-out limit.

Now need be through a few procedure polishings with the crossbeam in the structure, can temporarily solve the problem that the back torsion beam lost efficacy although it is so, but like this not only increase labor intensity of operating staff and productive costs, and the polishing quality of stability can't guarantee that also production efficiency is also slow; As long as removing a little, the fault zone on crossbeam two stamping-out limits totally all might not cause the back torsion beam to lose efficacy.Comprehensive above various reasons, so, be the task of top priority to existing improvement with back torsion beam structure.

Summary of the invention

The purpose of this utility model is to overcome the deficiency that prior art exists, and a kind of easy punch forming and easy solder type are provided, and afterwards the crossbeam of torsion beam is " V " type, and Open Side Down, plays the service life that prolongs crossbeam greatly, prevents the back torsion beam that lost efficacy.

The purpose of this utility model is finished by following technical solution, it comprises crossbeam, resonance piece, the both sides assembly welding of described crossbeam has the trailing arm assembly, and increases the weldering brace panel at crossbeam and trailing arm assembly connecting portion respectively, and the place is welded with the resonance piece in the middle of the lower end of this crossbeam.

As preferably, described crossbeam is V-shaped, and Open Side Down.

The beneficial effects of the utility model are: one, the crossbeam of back torsion beam changes " V " shape into by being " U ", has the easy advantage of punch forming, and be difficult for to produce defective such as distortion; Two, in the torsion beam assembly assembly welding process of back, because crossbeam is V-shaped, be difficult for producing distortion, be convenient to and trailing arm assembly assembly welding; Three, do not need the fault zone on crossbeam stamping-out limit is carried out sanding and polishing, reduce site operation personnel's labour intensity and productive costs, guarantee the stability of back torsion beam performance.

Description of drawings

Fig. 1 is perspective view of the present utility model.

Fig. 2 is the structural representation of looking up of the present utility model.

Label in the accompanying drawing is respectively: 1, crossbeam; 2, resonance piece; 3, trailing arm assembly; 4, brace panel.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is done detailed introduction: shown in accompanying drawing 1,2, the utility model comprises crossbeam 1, resonance piece 2, the both sides assembly welding of described crossbeam 1 has trailing arm assembly 3, and increasing weldering brace panel 4 at crossbeam 1 and trailing arm assembly 3 connecting portions respectively, the place is welded with resonance piece 2 in the middle of the lower end of this crossbeam 1.Described crossbeam 1 is V-shaped, and Open Side Down.

The utility model will be now with the crossbeam 1 of the back torsion beam in the structure by " U " type opening to the right, Open Side Down to change " V " type into; And increase weldering brace panel 4, the torsional strength of deep beam 1 at crossbeam 1 and trailing arm assembly 3 connecting portions respectively.

The utility model is not limited to above-mentioned embodiment; no matter do any variation in its shape or material formation; every employing structure design provided by the utility model all is a kind of distortion of the present utility model, all should think within the utility model protection domain.

Claims

1. torsion beam after a kind, comprise crossbeam (1) and resonance piece (2), it is characterized in that: the both sides assembly welding of described crossbeam (1) has trailing arm assembly (3), and increasing weldering brace panel (4) at crossbeam (1) and trailing arm assembly (3) connecting portion respectively, the place is welded with resonance piece (2) in the middle of the lower end of this crossbeam (1).

2. back according to claim 1 torsion beam, it is characterized in that: described crossbeam (1) is V-shaped, and Open Side Down.