KR20110096268A - Tubular torsion beam typed suspension in vehicle - Google Patents

Tubular torsion beam typed suspension in vehicle Download PDF

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Publication number
KR20110096268A
KR20110096268A KR1020100015620A KR20100015620A KR20110096268A KR 20110096268 A KR20110096268 A KR 20110096268A KR 1020100015620 A KR1020100015620 A KR 1020100015620A KR 20100015620 A KR20100015620 A KR 20100015620A KR 20110096268 A KR20110096268 A KR 20110096268A
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South Korea
Prior art keywords
torsion beam
filler
turbula
tubular torsion
type suspension
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KR1020100015620A
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Korean (ko)
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임철순
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현대모비스 주식회사
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Priority to KR1020100015620A priority Critical patent/KR20110096268A/en
Publication of KR20110096268A publication Critical patent/KR20110096268A/en

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    • 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
    • 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
    • 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
    • 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
    • B60G2206/70—Materials used in suspensions
    • B60G2206/71—Light weight materials
    • B60G2206/7104—Thermoplastics

Abstract

PURPOSE: A tubular torsion beam type suspension is provided to improve the durability about the stress concentration which generates the crack without the additional welding process by filling the tubular torsion beam type suspension with the foam resin in the welding part. CONSTITUTION: A tubular torsion beam type suspension comprises the filler in order not to form the vacant space of the tubular torsion beam(2). The filler comprises the thermoplastic polyurethane resin or the foamable polyepoxy resin. The filler is filled in order that the tubular torsion beam is concentrated on the trailing arm(1) and welded site. The filler is inserted through the filling hole which is pierced in order to be communicated in the internal space of the tubular torsion beam. The filling hole is blocked by a plug(6).

Description

터뷸라토션빔타입 현가장치{Tubular torsion beam typed suspension in vehicle} Tubular torsion beam type suspension in vehicle

본 발명은 토션빔타입 현가장치에 관한 것으로, 특히 빈 공간에 충진재를 채워 강성을 보강한 터뷸라토션빔타입 현가장치에 관한 것이다.The present invention relates to a torsion beam type suspension device, and more particularly, to a turbulent torsion beam type suspension device that reinforces rigidity by filling a filler in an empty space.

일반적으로 후륜 현가에 적용되는 CTBA(Coupled Torsion Beam Axle)는 구조가 단순하고, 경량화된 구조를 갖는다.In general, the CTBA (Coupled Torsion Beam Axle) applied to the rear suspension has a simple structure and a lightweight structure.

상기와 같은 CTBA는 토션빔/토션바의 비틀림(Torsional)특성으로 차량의 승차감/조정성(Ride/Handling)을 결정하는 롤 강성을 조절하는 특징을 갖는 현가장치로서, 이러한 토션빔/토션바는 크게 토션빔의 형상에 따라 브이-빔(V-Beam) 타입과 터뷸라(Tubular)타입으로 구분된다. The CTBA is a suspension device having a feature of adjusting roll stiffness to determine ride / handling of the vehicle by the torsional characteristics of the torsion beam / torsion bar. The torsion beam is largely divided into a V-Beam type and a Tubular type.

이중 터뷸라(Tubular)타입은 패널(Panel)형 빔(BEAM)에 비해 부품수감소, 중량 절감 및 롤강성 향상 등이 잇점이 있다. The dual tubular type has advantages such as reduced component count, weight reduction and improved roll stiffness compared to panel type beams (BEAM).

그러나, 터뷸라(Tubular)타입은 트레일링암과 전후방향 용접되는 부위로 응력의 집중현상을 가져와 크랙(Crack)을 발생함으로서, 용접부위에서 약한 내구성을 갖을 수밖에 없는 구조를 갖는다.However, the tubular type has a structure in which cracks are generated by bringing stress to the trailing arm and the front and back welded parts, and thus have weak durability at the welded part.

이를 해소하기 위해 다양한 방안이 적용되지만, 통상 트레일링암의 용접 후방에 별도의 보강판을 덧대어줌으로서 응력집중부위에 대한 내구성을 강화하는 방안을 주로 적용하게 된다.In order to solve this problem, various methods are applied, but a method of strengthening durability against stress concentration areas is mainly applied by adding a separate reinforcing plate to the rear of the trailing arm.

하지만, 상기와 같이 별도 보강판을 덧대는 방안은 부품수 증가로 인한 중량 증대를 가져오고, 추가되는 용접공정에 따른 용접변형을 일으킬 우려를 가질 수밖에 없다.
However, the method of adding a separate reinforcement plate as described above may lead to an increase in weight due to an increase in the number of parts, and inevitably may cause welding deformation due to an additional welding process.

이에 본 발명은 상기와 같은 점을 감안하여 발명된 것으로, 터뷸라(Tubular)타입 토션빔이 트레일링암과 전후방향 용접되는 부위쪽 내부공간에 보강용 발포수지를 충진해줌으로서, 추가적인 용접공정없이 크랙(Crack)을 발생시키는 응력집중부위에 대한 내구성을 강화할 수 있는 터뷸라토션빔타입 현가장치를 제공하는데 목적이 있다.
Accordingly, the present invention has been invented in view of the above. As a tubular type torsion beam is filled with a reinforcing foam resin in the inner space of the part where the trailing arm is welded with the trailing arm, it is cracked without additional welding process. It is an object of the present invention to provide a turbulent torsion beam type suspension device that can enhance durability against stress-intensive parts generating cracks.

상기와 같은 목적을 달성하기 위한 본 발명은, 트레일링암과 전후방향에서 용접된 터뷸라토션빔을 갖춘 현가장치에 있어서, The present invention for achieving the above object, in the suspension device having a turbulent torsion beam welded in the front and rear direction with a trailing arm,

상기 터뷸라토션빔의 내부공간은 빈공간을 형성하지 않도록 채워진 충진재를 포함한 것을 특징으로 한다.
The inner space of the turbula torsion beam is characterized in that it comprises a filler filled so as not to form an empty space.

상기 충진재는 열가소성 폴리우레탄수지나 발포성 폴리에폭시수지를 적용한다.
The filler is a thermoplastic polyurethane resin or a foamed polyepoxy resin.

상기 충진재는 상기 터뷸라토션빔이 트레일링암과 용접된 부위로 집중되도록 채워지는 것을 특징으로 한다.
The filler is characterized in that the turbulent torsion beam is filled so as to focus on the welded portion with the trailing arm.

상기 충진재는 상기 터뷸라토션빔의 내부공간에 연통되도록 뚫려진 충진홀을 통해 주입된다.
The filler is injected through a filling hole that is drilled to communicate with the inner space of the turbulent beam.

상기 충진홀은 플러그를 통해 막혀지는 것을 특징으로 한다.
The filling hole is characterized in that the plug is blocked.

이러한 본 발명에 의하면, 발포수지를 이용해 터뷸라(Tubular)타입 토션빔과 트레일링암의 용접부위에 대한 내구성을 강화하므로 구조적 변경 없이도 응력집중에 따른 크랙(Crack)발생을 줄이는 효과를 갖는다.According to the present invention, since the durability of the welded portion of the tubular (torbular) type torsion beam and the trailing arm using the foamed resin has the effect of reducing the crack (cracks) due to the stress concentration without structural changes.

추가적인 용접공정을 요구하지 않는 발포수지를 이용하므로 내구성강화를 위한 공정이 단순화되고, 보강판적용때에 비해 부품수량이 줄어들며 낮은 밀도로 인한 중량감소 효과도 갖는다.The use of foamed resin that does not require additional welding process simplifies the process for strengthening durability, reduces the number of parts compared to when applying the reinforcement plate, and also reduces the weight due to low density.

고압발포수지충진기를 이용해 발포수지를 충진하는 방식이므로 다양한 차종과 부품등에도 모두 적용될 수 있는 효과도 갖는다.
The high-pressure foaming resin filler is used to fill the foamed resin, so it can be applied to all kinds of vehicles and parts.

도 1은 본 발명에 따른 터뷸라토션빔타입 현가장치의 구성도이고, 도 2(가)내지 (다)는 본 발명에 따라 충진재를 채운 터뷸라토션빔의 구성도이며, 도 3은 본 발명에 따른 터뷸라토션빔쪽 응력해석도이다.1 is a block diagram of a turbula torsion beam type suspension apparatus according to the present invention, Figure 2 (a) to (c) is a block diagram of a turbula torsion beam filled with a filler according to the present invention, Figure 3 is the present invention The turbulence torsion beam side stress analysis

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명하며, 이러한 실시예는 일례로서 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 여러 가지 상이한 형태로 구현될 수 있으므로, 여기에서 설명하는 실시예에 한정되지 않는다.DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the exemplary embodiments of the present invention may be embodied in various different forms, one of ordinary skill in the art to which the present invention pertains may be described herein. It is not limited to the Example to make.

도 1은 본 발명에 따른 터뷸라토션빔타입 현가장치의 구성도를 나타낸다.1 is a block diagram of a turbula torsion beam type suspension apparatus according to the present invention.

도시된 바와 같이, 현가장치가 CTBA(Coupled Torsion Beam Axle)타입으로서, 특히 후륜에 적용된 터뷸라(Tubular)타입 토션빔을 이용한 구조이다.As shown, the suspension is a CTBA (Coupled Torsion Beam Axle) type, in particular, a structure using a tubular (Tubular) torsion beam applied to the rear wheel.

상기 터뷸라토션빔(2)은 트레일링암(1)과 전후방향에서 용접(K)되고, 그 내부공간(3)에 연통되는 충진홀(4)을 상기 용접(K)부위에 근접된 위치에 뚫어준 구조를 갖는다. The turbulent torsion beam 2 is welded (K) to the trailing arm 1 in the front-rear direction, and the filling hole 4 communicating with the inner space 3 is positioned at a position proximate to the welding K portion. It has a drilled structure.

본 실시예에서 상기 충진홀(4)은 고압발포수지충진기를 이용해 발포수지를 충진할 정도의 직경으로 뚫어준다.In this embodiment, the filling hole (4) is drilled to a diameter enough to fill the foam resin using a high-pressure foam resin filling machine.

도 2(가)내지 (다)는 본 발명에 따라 충진재를 채운 터뷸라토션빔의 구성도를 나타낸다.2 (a) to 2 (c) show the construction of a turbulent torsion beam filled with a filler according to the present invention.

도 2(가)에 도시된 바와 같이, 본 실시예에서는 터뷸라토션빔(2)에 뚫린 충진홀(4)을 이용해 충진재(5)를 주입하고, 충진재(5)의 주입이 완료된 후에는 플러그(6)를 충진홀(4)에 끼워줌으로서, 도 2(나)와 같이 충진홀(4)이 플러그(6)를 통해 막혀진 상태를 갖는다.As shown in FIG. 2 (a), in the present embodiment, the filler 5 is injected using the filling hole 4 drilled through the turbulent beam 2, and after the injection of the filler 5 is completed, the plug By inserting 6 into the filling hole 4, the filling hole 4 is blocked by the plug 6 as shown in Fig. 2 (b).

본실시예에서는 충진재(5)의 재료로서 열가소성 폴리우레탄수지나 발포성 폴리에폭시수지등을 사용하며, 고압으로 충진하는 방식을 적용한다.In this embodiment, a thermoplastic polyurethane resin, a foamed polyepoxy resin, or the like is used as the material of the filler 5, and a method of filling at high pressure is applied.

상기와 같이 충진재(5)가 적용되는 자동차분야는 크래쉬박스 충진제, 범퍼 충진제, 충돌성능 개선용 사이드 멤버 충진제와 같은 용도가 있다. As described above, the automobile field to which the filler 5 is applied has a use such as a crash box filler, a bumper filler, and a side member filler for improving collision performance.

또한, 상기 충진재(5)의 주입작업은 터뷸라토션빔(2)에 대한 도장(페인팅)작업 후 이루어진다.In addition, the filling operation of the filler 5 is performed after the painting (painting) operation on the turbula torsion beam (2).

본 실시예에서 상기 플러그(6)는 터뷸라토션빔(2)의 내부공간(3)에 충진된 충진재(5)에 대한 이물질 유입을 방지하기 위한 것으로, 고무마개를 이용함이 바람직하다.In the present embodiment, the plug 6 is used to prevent foreign substances from entering the filler 5 filled in the inner space 3 of the turbula torsion beam 2, and it is preferable to use a rubber stopper.

도 2(다)는 본 실시예에 따라 충진재(5)가 충진된 터뷸라토션빔(2)의 내부공간(3)의 단면을 나타내며, 도시된 바와 같이 내부공간(3)은 충진재(5)로 채워짐으로서, 보강재로서 단순 강판을 용접한 구조보다 에너지흡수율이 높아 기존 구조변경 없이 강도 및 강성을 높일 수 있게 된다. 2 (c) shows a cross section of the internal space 3 of the turbulent torsion beam 2 filled with the filler 5 according to the present embodiment, and as shown, the internal space 3 is the filler 5. Filled with, it is possible to increase the strength and rigidity without changing the existing structure because the energy absorption rate is higher than the structure welded a simple steel plate as a reinforcing material.

도 3은 본 발명에 따른 터뷸라토션빔쪽 응력해석도를 나타낸다.Figure 3 shows the turbulence torsion beam side stress analysis according to the present invention.

도시된 바와 같이, 트레일링암(1)을 따라 형성된 응력형성부(a,b)중 특히, 트레일링암(1)과 전후방향에서 용접(K)된 터뷸라토션빔(2)의 용접부위쪽으로 크랙집중부(X,Y)가 집중되더라도, 상기 터뷸라토션빔(2)의 내부공간(3)으로 채워진 충진재(5)가 상기 크랙집중부(X,Y)쪽의 내구성을 강화함으로서 용접(K)부위쪽 크랙(Crack)의 형성을 크게 낮출 수 있게 된다.
As shown, among the stress forming portions (a, b) formed along the trailing arm (1), in particular, cracks toward the welding portion of the turbulent torsion beam (2) welded (K) in the front and rear direction with the trailing arm (1). Even if the concentrating portions X and Y are concentrated, the filler 5 filled with the inner space 3 of the turbulent torsion beam 2 enhances the durability of the crack concentrating portions X and Y, thereby welding (K). This greatly reduces the formation of cracks in the region.


1 : 트레일링암 2 : 터뷸라토션빔
3 : 내부공간 4 : 충진홀
5 : 충진재 6 : 플러그
K : 용접 a,b : 응력형성부
X,Y : 크랙(Crack)집중부
1: trailing arm 2: turbula torsion beam
3: interior space 4: filling hole
5: filler 6: plug
K: welding a, b: stress forming part
X, Y: crack concentration

Claims (5)

트레일링암과 전후방향에서 용접된 터뷸라토션빔을 갖춘 현가장치에 있어서,
상기 터뷸라토션빔의 내부공간은 빈공간을 형성하지 않도록 채워진 충진재를 포함한 것을 특징으로 하는 터뷸라토션빔타입 현가장치.
A suspension device having a trailing arm and a turbulent torsion beam welded in the front and rear directions,
The inner space of the turbula torsion beams turbula torsion beam type suspension, characterized in that it comprises a filler filled so as not to form an empty space.
청구항 1에 있어서, 상기 충진재는 열가소성 폴리우레탄수지나 발포성 폴리에폭시수지인 것을 특징으로 하는 터뷸라토션빔타입 현가장치.
The turbula torsion beam type suspension apparatus according to claim 1, wherein the filler is a thermoplastic polyurethane resin or a expandable polyepoxy resin.
청구항 2에 있어서, 상기 충진재는 상기 터뷸라토션빔이 트레일링암과 용접된 부위로 집중되도록 채워지는 것을 특징으로 하는 터뷸라토션빔타입 현가장치.
The turbula torsion beam-type suspension device according to claim 2, wherein the filler is filled so that the turbula torsion beam is concentrated to the welded area with the trailing arm.
청구항 3에 있어서, 상기 충진재는 상기 터뷸라토션빔의 내부공간에 연통되도록 뚫려진 충진홀을 통해 주입되는 것을 특징으로 하는 터뷸라토션빔타입 현가장치.

4. The turbula torsion beam-type suspension device according to claim 3, wherein the filler is injected through a filling hole which is opened to communicate with the inner space of the turbula torsion beam.

청구항 4에 있어서, 상기 충진홀은 플러그를 통해 막혀지는 것을 특징으로 하는 터뷸라토션빔타입 현가장치.
The turbulent torsion beam type suspension apparatus according to claim 4, wherein the filling hole is blocked by a plug.
KR1020100015620A 2010-02-22 2010-02-22 Tubular torsion beam typed suspension in vehicle KR20110096268A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101383725B1 (en) * 2012-12-07 2014-04-08 현대자동차(주) Torsion beam for suspension in vehicle
KR101382966B1 (en) * 2012-11-21 2014-04-09 현대자동차주식회사 Rear axle module manufacturing process and coupled tubular beam axle suspension thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101382966B1 (en) * 2012-11-21 2014-04-09 현대자동차주식회사 Rear axle module manufacturing process and coupled tubular beam axle suspension thereof
KR101383725B1 (en) * 2012-12-07 2014-04-08 현대자동차(주) Torsion beam for suspension in vehicle

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