CN202448702U

CN202448702U - Automobile rear torsion beam

Info

Publication number: CN202448702U
Application number: CN2012200484222U
Authority: CN
Inventors: 欧阳光
Original assignee: Jiangsu Joylong Automobile Co Ltd
Current assignee: Jiangsu Joylong Automobile Co Ltd
Priority date: 2012-02-15
Filing date: 2012-02-15
Publication date: 2012-09-26
Anticipated expiration: 2022-02-15

Abstract

The utility model discloses an automobile rear torsion beam and relates to the technical field of automobile production. The automobile rear torsion beam comprises a bending cross beam, wherein the cross section of the bending cross beam is V-shaped; the two ends of the cross beam are respectively and symmetrically connected with a longitudinal arm; the other ends of the longitudinal arms are respectively connected with a wheel-edge bracket; a spring disc and a bush are respectively connected at the parts where the cross beam and the corresponding longitudinal arms are connected. The automobile rear torsion beam disclosed by the utility model has the advantages that the longitudinal arms and the cross beam combine lightness and high strength of a suspension, so that the whole assembly is lighter and the rigidity is higher; and due to the bending cross beam with the V-shaped cross section, the tosion beam has enough torsion rigidity, does not need to assemble additional cross stabilizing rods, and can overcome sidesway of an automobile body so as to have the function of the horizontal stabilizing rod. The bush connected with the automobile body is an anisotropic rubber bush, and generates deformation to realize the correcting function when the automobile turns, so that the automobile has good stability in operation and comfort in taking.

Description

Torsion beam behind a kind of automobile

Technical field

The utility model relates to the car production technical field.

Background technology

Torsion beam is one of critical component of automobile behind the automobile, and main effect is the bob of balance left and right wheels, to reduce rocking of vehicle, keeps the steady of vehicle, and torsion beam itself can play the effect of Panhard rod, improves vehicle roll rigidity.The torsion beam of conventional confguration is made up of crossbeam, trailing arm, stabilizer rod, spring perch, damper base, wheel limit mount pad, seven main portions of mounting sleeve.

Each constituent elements of the torsion beam of conventional confguration is the metal plate punching moulding, and the crossbeam torsional stiffness is less relatively, therefore increases by a stabilizer rod and improves its torsional rigid; And new construction torsion Liangqi adopts tubing liquid to be expanded into type; The cross section is dual enclosed construction, and torsional rigid is higher, has therefore cancelled stabilizer rod.

Its Fabrication procedure is more with respect to new construction, and the welding deformation less stable the more important thing is it because the crossbeam two ends become hatch frame; Itself and trailing arm overlapping weld can not form enclosed construction, and the discontinuity of its commissure stress concentration can occur near the weld seam during torsion beam work; Be prone to produce endurance failure; For guaranteeing reliability of products, therefore higher to its welding process requirement, and be difficult to control.

Description of drawings

The utility model purpose be to design a kind of can overcome with the automobile that technological deficiency is arranged after torsion beam.

The utility model comprises crossbeam crooked, that transversal surface is V-shaped, and at trailing arm of the symmetrical respectively connection in the two ends of crossbeam, the support on the other end difference fifth wheel limit of each trailing arm is connected spring holder and lining at crossbeam respectively with the connecting portion of corresponding trailing arm.

Trailing arm of the utility model and crossbeam all can adopt hollow tube to be shaped and make, and the lightweight and the high strength that have had suspension concurrently make whole assembly lighter, and rigidity is higher.Crooked, section has enough torsional stiffnesies for the vee-type crossbeam makes torsion beam, need not to assemble in addition Panhard rod, when turning to, can overcome body roll, the function of performance Panhard rod.With the lining of body contact is anisotropic rubber bush (radial and axial elastic parameter is different), and at Ackermann steer angle, lining produces distortion and realizes its calibration function, thereby makes vehicle have good handling stability and travelling comfort.

Description of drawings

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

Fig. 2 be among Fig. 1 A-A to section amplification figure.

The specific embodiment

Like Fig. 1, shown in 2, the utility model is provided with crossbeam 1 bending, that transversal surface is V-shaped, the symmetrical respectively welding trailing arm 2,3 at the two ends of crossbeam 1.

Support 4 on the other end weld wheel limit of trailing arm 2, weld spring holder 6 and lining 8 respectively at the connecting portion of crossbeam 1 and trailing arm 2.

Support 5 on the other end weld wheel limit of trailing arm 3, weld spring holder 7 and lining 9 respectively at the connecting portion of crossbeam 1 and trailing arm 3.

Claims

1. torsion beam behind the automobile; It is characterized in that comprising crossbeam crooked, that transversal surface is V-shaped; At trailing arm of the symmetrical respectively connection in the two ends of crossbeam, the support on the other end difference fifth wheel limit of each trailing arm is connected spring holder and lining at crossbeam respectively with the connecting portion of corresponding trailing arm.