CN104260614A

CN104260614A - Torsion beam structure

Info

Publication number: CN104260614A
Application number: CN201410471405.3A
Authority: CN
Inventors: 何选景
Original assignee: SAIC Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2014-09-16
Filing date: 2014-09-16
Publication date: 2015-01-07

Abstract

The invention relates to torsion beam type suspension of an automobile, and specifically relates to a torsion beam structure of torsion beam type suspension. The structure comprises a beam transverse to the vehicle width direction. The beam is a channel bar component with a U-shaped cross section. Two ends of the beam are connected with a longitudinal arm as a whole by welding. An upper wall plate and a lower wall plate at two ends of the beam have a fish tail type end edge. The central section of the longitudinal arm is located between the upper and lower wall plates at two ends of the beam and welded with them as a whole. By the end edges of the upper end lower wall plates at two ends of the beam, the welding line for the end part of the beam and the longitudinal arm is lengthened. The central section of the longitudinal arm is located between the upper and lower wall plates at two ends of the beam and welded with them as a whole, so that the connecting strength of the welding part is enhanced, thereby guaranteeing the quality of the torsion beam.

Description

Torsion beam structure

Technical field

The torsion beam type that the present invention relates to automobile hangs, and specifically, relates to the torsion beam structure in the suspension of torsion beam type.

Background technology

Torsion beam comprises the crossbeam being horizontally placed on overall width direction, and the trailing arm that crossbeam two ends connect, and both are welded as a whole formation stressed member.Because crossbeam is the groove rod-like members that cross section takes the shape of the letter U, its notch points to vehicle commander direction, therefore, when end and the trailing arm of crossbeam are implemented to weld, fusion length is limited, in addition weld flaw, the place that the structural strength of torsion beam is the weakest is exactly the weld of crossbeam and trailing arm, and modal damage phenomenon is exactly weld distortion or cracking.

Summary of the invention

The object of this invention is to provide a kind of torsion beam structure, solve crossbeam and trailing arm weld is yielding or the problem that ftractures, ensure that the quality of torsion beam.

For achieving the above object, the technical solution used in the present invention: a kind of torsion beam structure, comprise the crossbeam being horizontally placed on overall width direction, crossbeam is the groove rod-like members that cross section takes the shape of the letter U, and crossbeam two ends are connected with trailing arm, both are welded as a whole, and the upper and lower wallboard end cincture exterior feature at crossbeam two ends, in fish tail shape, is welded as a whole between the upper and lower wallboard that the stage casing arm body of trailing arm is positioned at crossbeam two ends.

Beneficial effect of the present invention: be fishtail upper and lower wallboard end limit by crossbeam two ends, the edge length at the laminating position of crossbeam and trailing arm is significantly increased, the end increasing crossbeam after welding and trailing arm implement the fusion length of welding, and then ensure that the Joint strenght of weld, thus ensure that the quality of torsion beam.

Accompanying drawing explanation

Fig. 1,2 is perspective view of the present invention;

Fig. 3 is partial top view of the present invention;

Fig. 4 is the perspective view of center member of the present invention.

Detailed description of the invention

With reference to accompanying drawing, a kind of torsion beam structure, comprise the crossbeam 10 being horizontally placed on overall width direction, the groove rod-like members that crossbeam 10 takes the shape of the letter U for cross section, and crossbeam 10 two ends are connected with trailing arm 20, both are welded as a whole, and upper and lower wallboard 11, the 12 end cincture exterior feature at crossbeam 10 two ends, in fish tail shape, is welded as a whole between the upper and lower wallboard 11,12 that the stage casing arm body of trailing arm 20 is positioned at crossbeam 10 two ends.Corresponding with the length shapes of trailing arm 20 in fishtail upper and lower wallboard 11,12 end limit, the wall of the upper and lower trailing arm 20 of the corresponding trailing arm 20 of width of upper and lower wallboard 11,12 is wide.Upper and lower wallboard 11, the 12 end cincture exterior feature at so-called crossbeam 10 two ends is in fish tail shape, as Fig. 4 represent more outstanding and obvious, it is wide that upper and lower wallboard 11,12 end cincture is set like this, mainly adds long beam 10 and trailing arm 20 and fit the peripheral length at position to lengthen fusion length.When welding, trailing arm 20 stage casing arm body is placed between upper and lower wallboard 11,12, and the wall of the trailing arm 20 of the wide correspondence of plate of upper and lower wallboard 11,12 is wide to be welded as a whole, and then increases the Joint strenght of crossbeam 10 and trailing arm 20 weld.

The bottom land end of the U-lag bar of crossbeam 10 arranges the arc opening 13 that opening points to trailing arm 20, and trailing arm 20 is placed between the upper and lower wallboard 11,12 at arc opening 13 place.Arc opening 13 corresponding trailing arm 20 stage casing arm body profile, trailing arm 20 stage casing arm body is placed in arc opening 13 and crossbeam 10 is firmly connected with trailing arm 20.

The weld part that upper and lower wallboard 11,12 is positioned at trailing arm 20 is provided with brace panel 30, and the crossbeam 10 that described brace panel 30 extends to its side and trailing arm 20 are welded as a whole.Brace panel 30 to stick on crossbeam 10 and trailing arm 20 and is welded on both commissure, after brace panel 30 welds with crossbeam 10, trailing arm 20, is exactly the two place's weld seams defined from inside to outside in fact, thus guarantees the welding quality of connecting portion.

Crossbeam 10 arranges spring tray 40 with the junction of trailing arm 20, and brace panel 30 covers the commissure of spring tray 40, crossbeam 10 and trailing arm 20.Spring tray 40 is used for holding in the palm support damping spring, so brace panel 30 covers spring tray 40, crossbeam 10 and the commissure of trailing arm 20, can also ensure the junction Joint strenght of spring tray 40 and crossbeam 10 and trailing arm 20.

Described spring tray 40 is arranged at the bottom land side of the U-lag bar of lower wall panels 12 place crossbeam 10, and the weld of spring tray 40 extends to wainscot 12 place from crossbeam 10 lower wall panels 12 place, and described brace panel 30 covers the weld of spring tray 40, wainscot 11.

Described brace panel 30 is for sticking the arc of crossbeam 10 and trailing arm 20 joint, and arc extends and side placed on it to the bottom land end of the U-lag bar of crossbeam 10.

Above-mentionedly cover the preferred version of spring tray 40, crossbeam 10 and the commissure of trailing arm 20 for brace panel 30, such brace panel 30 is formed does not interfere layout to spring tray 40.

The crossbeam 10 at described arc opening 13 place extends to upper and lower wallboard 11,12 place and is integrally formed formula structure.Such guarantee crossbeam 10 two ends are positioned at the intensity at upper and lower wallboard 11,12 place.

Claims

1. a torsion beam structure, comprise the crossbeam (10) being horizontally placed on overall width direction, the groove rod-like members that crossbeam (10) takes the shape of the letter U for cross section, and crossbeam (10) two ends are connected with trailing arm (20), both are welded as a whole, it is characterized in that: the upper and lower wallboard (11,12) at crossbeam (10) two ends end cincture exterior feature, in fish tail shape, is welded as a whole between the upper and lower wallboard (11,12) that the stage casing arm body of trailing arm (20) is positioned at crossbeam (10) two ends.

2. torsion beam structure according to claim 1, it is characterized in that: the bottom land end of the U-lag bar of crossbeam (10) arranges the arc opening (13) that opening points to trailing arm (20), and trailing arm (20) is placed between the upper and lower wallboard (11,12) at arc opening (13) place.

3. torsion beam structure according to claim 1 and 2, it is characterized in that: the weld part that upper and lower wallboard (11,12) is positioned at trailing arm (20) is provided with brace panel (30), the crossbeam (10) that described brace panel (30) extends to its side is gone up with trailing arm (20) and is welded as a whole.

4. torsion beam structure according to claim 3, it is characterized in that: crossbeam (10) arranges spring tray (40) with the junction of trailing arm (20), brace panel (30) covers the commissure of spring tray (40), crossbeam (10) and trailing arm (20).

5. torsion beam structure according to claim 4, it is characterized in that: described spring tray (40) is arranged at the bottom land side of the U-lag bar at lower wall panels (12) place crossbeam (10), the weld of spring tray (40) extends to wainscot (12) place from crossbeam (10) lower wall panels (12) place, and described brace panel (30) covers the weld of spring tray (40), wainscot (11).

6. torsion beam structure according to claim 5, it is characterized in that: described brace panel (30) is for sticking the arc of crossbeam (10) and trailing arm (20) joint, and arc extends and side placed on it to the bottom land end of the U-lag bar of crossbeam (10).

7. torsion beam structure according to claim 6, is characterized in that: the crossbeam (10) at described arc opening (13) place extends to upper and lower wallboard (11,12) place and is integrally formed formula structure.