KR20130006101A - Rear suspension of coupled torsion beam axle type - Google Patents

Rear suspension of coupled torsion beam axle type Download PDF

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Publication number
KR20130006101A
KR20130006101A KR1020110067939A KR20110067939A KR20130006101A KR 20130006101 A KR20130006101 A KR 20130006101A KR 1020110067939 A KR1020110067939 A KR 1020110067939A KR 20110067939 A KR20110067939 A KR 20110067939A KR 20130006101 A KR20130006101 A KR 20130006101A
Authority
KR
South Korea
Prior art keywords
torsion beam
trailing arm
rear suspension
axle type
coupled
Prior art date
Application number
KR1020110067939A
Other languages
Korean (ko)
Inventor
이문용
설현욱
Original Assignee
주식회사 성우하이텍
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 주식회사 성우하이텍 filed Critical 주식회사 성우하이텍
Priority to KR1020110067939A priority Critical patent/KR20130006101A/en
Publication of KR20130006101A publication Critical patent/KR20130006101A/en

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    • 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
    • B60G21/052—Mounting means therefor
    • 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
    • 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
    • B60G2206/80—Manufacturing procedures
    • B60G2206/82—Joining
    • B60G2206/8201—Joining by welding
    • 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
    • B60G2206/80—Manufacturing procedures
    • B60G2206/82—Joining
    • B60G2206/8207—Joining by screwing

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

Abstract

PURPOSE: A coupled torsion beam axle type rear suspension system is provided to improve durability by reinforcing the connection between a torsion beam and a trailing arm. CONSTITUTION: A coupled torsion beam axle type rear suspension system(100) comprises a torsion beam(10) and left and right trailing arms(30). The torsion beam is composed of a steel bar with a specific length and is welded to the left and right trailing arms. The left and right trailing arms are connected to both ends of the torsion beam. One or more plane portions are formed on the penetrated ends(E) of the torsion beam penetrating through the trailing arms.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rear suspension of a coupled torsion beam axle type,

An embodiment of the present invention relates to a rear suspension of a coupled torsion beam axle type, and more particularly, to a rear suspension of a coupled torsion beam axle type having an improved structure of a torsion beam.

In general, coupled suspension torsion beam axle (CTBA) type suspensions have a relatively high driving stability compared to low production costs and small masses, although the design performance range is not high due to simple components. Rear suspension of light vehicles and semi-heavy vehicles.

1 is a perspective view showing a rear suspension of a coupled torsion beam axle type according to the prior art.

Referring to FIG. 1, the coupled torsion beam axle-type rear suspension includes a torsion beam 101, and both ends of the torsion beam 101 include a carrier 103 for mounting a tire and a wheel. The trailing arm 105 mounted on one side is fixed.

One side of each trailing arm 105 includes a shock absorber 107 and a bush 109 for connecting to a vehicle body (not shown), and a spring 113 between the vehicle body through the spring seat 111. ) Is installed.

The rear suspension of this coupled torsion beam axle type is characterized in that the wheel is deformed due to the torsional deformation characteristics of the torsion beam 101 located at the center of the trailing arm 105, The bump 109 can be induced to a toe-in at the time of bump by the position of the arm 105 and the bush 109 characteristics.

In the rear suspension of the coupled torsion beam axle type as described above, the trailing arm 105 is made of a tubular type banding the pipe as shown in Figure 2 to maximize the light weight and high performance.

The torsion beam 101 is formed of a steel rod having a circular cross section as shown in FIG. 2, and penetrates the trailing arm 105 of a pipe type and is welded to the trailing arm 105.

However, in the prior art, since the torsion beam 101 made of a steel rod having a circular cross section is welded through the trailing arm 105, the junction portion of the torsion beam 101 and the trailing arm 105 in the shear and torsional modes is connected. Stress can be concentrated.

That is, in the conventional coupled torsion beam axle type suspension structure, stress is excessively concentrated at the junction between the torsion beam 101 and the trailing arm 105, and as a result, the roll rigidity due to the increase of the torsional constant is weak. And the durability problem of the joint in the shear / torsion mode.

Embodiments of the present invention can improve the roll rigidity according to the increase of the torsional constant value by improving the shape and coupling structure of the torsion beam, coupled torsion beam axle type rear suspension to improve the durability and marketability To provide.

Coupled torsion beam axle type rear suspension according to an embodiment of the present invention includes a torsion beam and a trailing arm connected to both ends of the torsion beam, the torsion beam is made of a steel rod of circular cross-sectional shape It is characterized in that the penetrating through the trailing arm and fixed to the trailing arm, at least one planar portion is formed at the through end penetrating the trailing arm.

In addition, in the rear suspension of the coupled torsion beam axle type according to the embodiment of the present invention, the through portion of the torsion beam may be formed on each side of the planar portion.

In addition, in the rear suspension of the coupled torsion beam axle type according to the embodiment of the present invention, the trailing arm may be installed so that the guide tube for guiding the through end of the torsion beam.

In the rear suspension of the coupled torsion beam axle type according to the embodiment of the present invention, the guide tube may be inserted into a through hole formed in the trailing arm and welded to the trailing arm.

In addition, in the rear suspension of the coupled torsion beam axle type according to the embodiment of the present invention, a thread may be formed at the through end of the torsion beam.

In addition, in the rear suspension of the coupled torsion beam axle type according to the embodiment of the present invention, a nut may be coupled to the screw thread while a through end of the torsion beam passes through the guide tube.

Since the embodiment of the present invention is configured to form a planar portion at the through end of the torsion beam and weld-bond the through end to the trailing arm, the junction of the torsion beam and the trailing arm where stress is concentrated in the shear and torsional modes is provided. More robustly, roll stiffness can be improved due to an increase in the torsional constant value, and durability and marketability can be improved.

These drawings are for the purpose of describing an exemplary embodiment of the present invention, and therefore the technical idea of the present invention should not be construed as being limited to the accompanying drawings.
1 is a perspective view showing a rear suspension of a coupled torsion beam axle type according to the prior art.
2 is a perspective view illustrating a coupling structure of a torsion beam and a trailing arm according to an example in the rear suspension of a coupled torsion beam axle type according to the related art.
3 is a perspective view illustrating a coupling structure of a torsion beam and a trailing arm in a coupled torsion beam axle type rear suspension according to an embodiment of the present invention.
4 is a perspective view showing a torsion beam applied to the rear suspension of the coupled torsion beam axle type according to an embodiment of the present invention.
5 is a perspective view illustrating a coupling structure of a torsion beam and a trailing arm in a coupled torsion beam axle type rear suspension according to another embodiment of the present invention.
FIG. 6 is an exploded perspective view of FIG. 5. FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In addition, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to those shown in the drawings, and is shown by enlarging the thickness in order to clearly express various parts and regions. It was.

3 is a perspective view illustrating a coupling structure of a torsion beam and a trailing arm in a coupled torsion beam axle type rear suspension according to an embodiment of the present invention.

Referring to FIG. 3, the rear suspension device 100 of the coupled torsion beam axle type according to the embodiment of the present invention may be mainly applied to a light vehicle and a semi-medium vehicle.

The rear suspension 100 of the coupled torsion beam axle type according to the embodiment of the present invention basically includes a torsion beam 10 and left and right trailing arms 30 connected to both ends of the torsion beam 10. Include.

Here, the trailing arm 30 is welded and bonded to the bush case 31 for mounting with the vehicle body at one end, the first mounting bracket 33 for mounting the carrier (not shown) at the other end A welding joint is carried out, and the 2nd mount bracket 35 for mounting a spring (not shown) is welded.

The trailing arm 30 may be formed of a tubular type in which a pipe is bent to maximize light weight and high performance.

In addition, the torsion beam 10 is formed of a steel rod having a circular cross section having a predetermined length. The torsion beam 10 may pass through a trailing arm 30 of a pipe type and may be welded to the trailing arm 30.

The coupled torsion beam axle-type rear suspension device 100 according to an embodiment of the present invention improves the shape and coupling structure of the torsion beam 10, and the torsion beam 10 and the trailing arm 30. By strengthening the bonding site of the roll stiffness according to the increase of the torsional constant value can be improved, it is made as a structure that can improve the durability and marketability.

To this end, the torsion beam 10 according to the embodiment of the present invention passes through the trailing arm 30 and is fixedly installed on the trailing arm 30, as shown in FIG. 4. At least one planar portion 11 is formed at an end (hereinafter referred to as " through end " for convenience) passing through it.

Here, the planar portion 11 may be formed at both sides (upper and lower side in the drawing) at the through end E of the torsion beam 10. That is, the flat portion 11 may be formed by removing a portion of the upper and lower sides to a predetermined length from the first circular cross section.

In this case, it will be apparent that the trailing hole 30 should be formed in the trailing arm 30 so that the through end E may be fitted to correspond to the through end E shape of the torsion beam 10.

In addition, a portion of the through end E of the torsion beam 10 penetrates the through hole of the trailing arm 30 and protrudes, and is preferably welded to the end of the through hole of the trailing arm 30. .

Therefore, the rear suspension 100 of the coupled torsion beam axle type according to the embodiment of the present invention configured as described above forms a flat portion 11 at the through end E of the torsion beam 10 and the Since the through end E is weld-bonded to the trailing arm 30, the joint portion of the torsion beam 10 and the trailing arm 30 where stress is concentrated in shear and torsional modes can be made more robust. It is possible to further improve the roll stiffness according to the increase of the torsional constant value, and further improve durability and marketability.

FIG. 5 is an exploded perspective view illustrating a coupling structure of a torsion beam and a trailing arm in a coupled torsion beam axle type rear suspension according to another embodiment of the present invention, and FIG. 6 is an exploded perspective view of FIG. 5.

5 and 6, the rear suspension 200 of the coupled torsion beam axle type according to another embodiment of the present invention may pass through the end E of the torsion beam 210 to the trailing arm 230. It can be fastened to the trailing arm 230 using the nut N, without welding.

To this end, in another embodiment of the present invention, the trailing arm 230 is installed to pass through the guide tube 250 for guiding the through end (E) of the torsion beam (210).

The guide tube 250 is a through end E of the torsion beam 210 is fitted, corresponding to the cross section of the torsion beam 210 is formed in the form of a tube open at both ends.

Here, the guide tube 250 may be fitted into the through hole 231 formed in the trailing arm 230 and both ends may be welded to the hole end of the through hole 231.

On the other hand, in another embodiment of the present invention, the torsion beam 210 is formed with a flat portion 211 at the through end (E) as in the previous embodiment, the thread 213 on the outer peripheral surface of the through end (E) ) Is formed.

Therefore, in another embodiment of the present invention, while the guide tube 250 is installed on the trailing arm 230, the through end E of the torsion beam 210 is inserted into the guide tube 250 and the guide tube ( The torsion beam 210 may be firmly mounted to the trailing arm 230 by fastening the nut N to the thread 213 of the through end E penetrating 250.

Since the rest of the configuration and operation of the coupled torsion beam axle-type rear suspension 200 according to another embodiment of the present invention is the same as in the previous embodiment, a detailed description thereof will be omitted below.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And it goes without saying that the invention belongs to the scope of the invention.

10, 210 ... torsion beam 11, 211 ... flat part
30, 230 ... trailing arm 213 ... thread
231 ... through-hole 250 ... guide tube
N ... Nut

Claims (5)

In the rear suspension of the coupled torsion beam axle type comprising a torsion beam and a trailing arm connected to both ends of the torsion beam,
The torsion beam is formed of a steel rod having a circular cross-sectional shape, penetrates the trailing arm and is fixed to the trailing arm, and at least one planar portion is formed at a through end passing through the trailing arm. Rear suspension of coupled torsion beam axle type. The method according to claim 1,
Coupled torsion beam axle type rear suspension, characterized in that the through portion of the torsion beam is formed on each side of the flat portion. The method of claim 2,
Coupled torsion beam axle type rear suspension, characterized in that the trailing arm is installed so as to pass through the guide tube for guiding the through end of the torsion beam. The method of claim 3,
And the guide tube is inserted into a through hole formed in the trailing arm and welded to the trailing arm. The method of claim 3,
A thread is formed at the through end of the torsion beam, and the nut is coupled to the screw with the through end of the torsion beam passing through the guide tube.
KR1020110067939A 2011-07-08 2011-07-08 Rear suspension of coupled torsion beam axle type KR20130006101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110067939A KR20130006101A (en) 2011-07-08 2011-07-08 Rear suspension of coupled torsion beam axle type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110067939A KR20130006101A (en) 2011-07-08 2011-07-08 Rear suspension of coupled torsion beam axle type

Publications (1)

Publication Number Publication Date
KR20130006101A true KR20130006101A (en) 2013-01-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110067939A KR20130006101A (en) 2011-07-08 2011-07-08 Rear suspension of coupled torsion beam axle type

Country Status (1)

Country Link
KR (1) KR20130006101A (en)

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