KR20120055418A - Coupled torsion beam axle structure - Google Patents

Coupled torsion beam axle structure Download PDF

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Publication number
KR20120055418A
KR20120055418A KR1020100117154A KR20100117154A KR20120055418A KR 20120055418 A KR20120055418 A KR 20120055418A KR 1020100117154 A KR1020100117154 A KR 1020100117154A KR 20100117154 A KR20100117154 A KR 20100117154A KR 20120055418 A KR20120055418 A KR 20120055418A
Authority
KR
South Korea
Prior art keywords
cross
torsion beam
coupled torsion
axle structure
closed space
Prior art date
Application number
KR1020100117154A
Other languages
Korean (ko)
Inventor
손동주
임동민
Original Assignee
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020100117154A priority Critical patent/KR20120055418A/en
Publication of KR20120055418A publication Critical patent/KR20120055418A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/18—Resilient suspensions characterised by arrangement, location or kind of springs having torsion-bar springs only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/051—Trailing arm twist beam axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/20—Semi-rigid axle suspensions
    • B60G2200/21—Trailing arms connected by a torsional beam, i.e. twist-beam axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/012—Hollow or tubular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/001—Suspension arms, e.g. constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/02—Attaching arms to sprung part of vehicle

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

PURPOSE: A coupled torsion beam axle structure is provided to exclude the degradation of durability while reducing the number of parts and simplifying the configuration thereof. CONSTITUTION: A coupled torsion beam axle structure comprises a section extension part(5). The section extension part forms a closed space(3) in the upper center of the cross section of a tubular beam(1). An axle structure has a triangle form. In the cross section of the tubular beam, an external side portion(7) is connected to an inner sidewall portion(9) while forming a closed curve. The external side portion forms the outside of the triangle form.

Description

Coupled Torsion Beam Axle Structure

The present invention relates to a coupled torsion beam axle, and more particularly, to a structure of a tubular beam connecting both trailing arms in a transverse direction of a vehicle.

As shown in FIG. 1, the coupled torsion beam axle has a trailing arm 500 arranged in the front and rear direction of the vehicle body to support the vehicle, and the torsion beam having the trailing arm 500 installed in the transverse direction of the vehicle ( 502 to suppress roll and lateral behavior of the vehicle.

Coupled torsion beam axle as described above has the advantage of relatively light weight and low cost compared to other suspensions, while the lateral stiffness is relatively low, the handling characteristics are relatively low, there is a disadvantage of low impact performance due to high front and rear rigidity .

The cross-sectional shape of the torsion beam connecting both trailing arms 500 in the coupled torsion beam axle as described above is conventionally used as shown in FIGS. 2 and 3.

As shown in FIG. 2, the V-type torsion beam 504 and the torsion bar 506 are used together, and the most effective method of adjusting the roll stiffness of the rear wheel to an appropriate level is the diameter of the torsion bar 506 or Is to change the thickness. This is a way to easily match the roll stiffness to the target level without compromising other performance such as durability.

However, the structure shown in FIG. 2 has a disadvantage in that the number of parts increases, the weight increases, and the number of working hours during assembly increases because the torsion bar 506 is provided separately from the torsion beam.

3 is a structure using a tubular beam 508. In order to control roll stiffness, the circumferential length of the cross section of the tubular beam 508 is increased, the thickness thereof is increased, or the water droplets of the bottom are closed. There is a method of adjusting the diameter of the space 510. An increase in the circumferential length of the tubular beam 508 or an increase in the thickness of the tubular beam 508 is accompanied by an increase in weight, and the diameter of the closed space 510 of the droplet shape. The method of controlling the roll rigidity increases as the diameter of the closed space 510 increases, but the durability thereof becomes worse.

The present invention has been made to solve the problems described above, and does not bring a large increase in weight, and has a small number of parts and a simple configuration, while eliminating the deterioration of durability and ensuring roll rigidity to a desired level. The object is to provide a coupled torsion beam axle structure.

Coupled torsion beam axle structure of the present invention for achieving the above object is

In a triangular tubular beam cross-section structure of which both ends are extended downward, a cross-sectional extension part forming a closed space is further provided at an upper center of the tubular beam cross section.

.

The present invention does not bring about a large increase in weight, and has a small number of parts and has a simple configuration, while eliminating the deterioration of durability, and ensuring the roll rigidity to a desired level.

1 is a plan view showing the structure of a coupled torsion beam axle according to the prior art,
2 and 3 is a view showing a cross-sectional structure of the torsion beam according to the prior art,
4 is a diagram illustrating a coupled torsion beam axle structure according to the present invention.

Referring to FIG. 4, in the exemplary embodiment of the present invention, in a cross-sectional structure of a triangular tubular beam 1 having both ends extended downward, a cross-sectional extension forming a closed space 3 at an upper center of the cross section of the tubular beam 1 is performed. The part 5 is further provided.

That is, unlike the cross-sectional structure of the conventional tubular beam (1) is provided with a cross-sectional expansion portion (5) to form a closed space (3) above the cross section of the tubular beam (1) and to reduce or eliminate it at the lower side It is.

The tubular beam 1 has a cross-sectional structure in which an outer edge portion 7 forming an outer side of the triangular shape and an inner edge portion 9 forming an inner side are connected in a single closed curve and connected to the outer edge portion 7. Inner side portion (9) is in close contact with each other in two layers in a portion forming the hypotenuse of the triangular shape to form a single flat shape, in the cross-sectional extension (5) between the outer edge portion 7 and the inner edge portion (9) It is a structure that forms the closed space 3 as it opens.

Of course, the cross-sectional structure as described above can be formed relatively easily by bending and processing a single cylindrical pipe into a mold.

The cross-sectional extension portion 5 forms the closed space 3 while the outer edge portion 7 extends upward from the upper center portion of the triangular shape, and the cross-sectional shape of the closed space 3 is a smooth circular arc. It is made of connected water droplets.

In addition, in the present embodiment, the outer side portion 7 and the inner side portion 9 forming the triangular shape have a form of a single flat plate which is completely in close contact with each other at both lower ends of the triangular shape. The bottom of both sides of the) was to completely remove the portion of the closed space (3) that was conventionally provided.

However, of course, it is also possible to apply the cross-sectional extension part 5 of the upper center proposed by this invention in the state which formed the closed space of the lower both sides of the said tubular beam 1 slightly as needed. will be.

In the coupled torsion beam axle structure configured as described above, stress is concentrated on both ends of the lower side due to the characteristics of the tubular beam 1, and this part is not provided with a closed space or contracted, unlike this conventional art. It can overcome the durability problem which was broken by stress.

On the other hand, the roll stiffness required thereby is secured by the stiffness provided in the cross-sectional extension 5 and the closed space 3 provided in the upper center of the cross section of the tubular beam 1. Since the portion in which the cross-sectional extension portion 5 is formed is the portion where the stress is lower than both the lower end portions of the tubular beam 1 and other portions, the problem of durability that the cross-sectional extension portion 5 is broken is excluded. Yet, the roll rigidity required by the coupled torsion beam axle can be sufficiently secured by the cross-sectional extension 5.

One; Tubular beams
3; Closed space
5; Sectional extension
7; Outer edge
9; Medial edge

Claims (4)

In a triangular tubular beam cross-section structure of which both ends are extended downward, a cross-sectional extension part forming a closed space is further provided at an upper center of the tubular beam cross section.
Coupled torsion beam axle structure, characterized in that. The cross-sectional structure of claim 1, wherein the tubular beam
The outer edge forming the outer side of the triangular shape and the inner edge forming the inner side are connected in a single closed curve;
The outer side portion and the inner side portion are in close contact with each other in two layers at a portion forming both hypotenuses of the triangle shape to form a single flat shape;
In the cross-sectional extension portion to form the closed space while the gap between the outer edge and the inner edge
Coupled torsion beam axle structure, characterized in that. The method of claim 2, wherein the cross-sectional extension portion
The outer edge portion extends upwardly from an upper center portion of the triangular shape to form the closed space;
Cross-sectional shape of the closed space is made of a drop shape connected by a soft arc
Coupled torsion beam axle structure, characterized in that. The method according to claim 3,
The outer surface portion and the inner surface portion constituting the triangular shape has the form of a single flat plate completely in close contact with each other at both lower ends of the triangular shape
Coupled torsion beam axle structure, characterized in that.
KR1020100117154A 2010-11-23 2010-11-23 Coupled torsion beam axle structure KR20120055418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100117154A KR20120055418A (en) 2010-11-23 2010-11-23 Coupled torsion beam axle structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100117154A KR20120055418A (en) 2010-11-23 2010-11-23 Coupled torsion beam axle structure

Publications (1)

Publication Number Publication Date
KR20120055418A true KR20120055418A (en) 2012-05-31

Family

ID=46270989

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100117154A KR20120055418A (en) 2010-11-23 2010-11-23 Coupled torsion beam axle structure

Country Status (1)

Country Link
KR (1) KR20120055418A (en)

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