KR20120011512A - Torsion beam axle type rear suspension system for vehicle - Google Patents

Torsion beam axle type rear suspension system for vehicle Download PDF

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Publication number
KR20120011512A
KR20120011512A KR1020100073351A KR20100073351A KR20120011512A KR 20120011512 A KR20120011512 A KR 20120011512A KR 1020100073351 A KR1020100073351 A KR 1020100073351A KR 20100073351 A KR20100073351 A KR 20100073351A KR 20120011512 A KR20120011512 A KR 20120011512A
Authority
KR
South Korea
Prior art keywords
torsion beam
beam axle
reinforcing rod
vehicle body
trailing arm
Prior art date
Application number
KR1020100073351A
Other languages
Korean (ko)
Inventor
홍덕희
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 KR1020100073351A priority Critical patent/KR20120011512A/en
Publication of KR20120011512A publication Critical patent/KR20120011512A/en

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    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/43—Fittings, brackets or knuckles
    • 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
    • B60G2206/72—Steel

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

Abstract

The present invention relates to a torsion beam axle type rear suspension device for automobiles, and is provided with a reinforcement device 20 installed to connect the trailing arm 1 and the vehicle body 11 so that the riding comfort can be improved during normal straight driving of the vehicle. In this case, the rolling phenomenon of the vehicle can be eliminated during the turning driving, and the turning stability can be greatly improved.

Description

Torsion beam axle type rear suspension system for automobiles {Torsion beam axle type rear suspension system for vehicle}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torsion beam axle type rear suspension device mainly applied to small and medium sized passenger cars.

In general, the suspension of the vehicle is a device that prevents damage to the vehicle body or cargo and improves the riding comfort by not transmitting vibration or shock received from the road surface directly to the vehicle body when driving.

As shown in FIG. 1, a rear suspension device, which is mainly applied to a rear wheel of a small and medium-sized passenger car, is a torsion beam axle type of vehicle suspension device. It comprises a trailing arm (1) and a torsion beam axle (2), which is disposed in the left and right directions of the vehicle body and is coupled to the pair of trailing arms (1).

A spring seat 3 and a spindle bracket 4 are respectively coupled to the rear end of the trailing arm 1 positioned toward the rear of the vehicle body with respect to the torsion beam axle 2, and the spring seat 3 A lower end of the coil spring 5 is seated, and a lower end of the shock absorber 6 connected to the vehicle body is coupled to the side of the coil spring 5.

A trailing arm bush 7 is coupled to an end of the trailing arm 1 facing forward, and the trailing arm bush 7 is coupled with a bush bracket 9 through a bush shaft 8. The bracket 9 has a configuration combined with the vehicle body.

The torsion beam axle-type rear suspension configured as described above is a technique for realizing weight reduction and cost reduction. For this purpose, the torsion beam axle 2 has to use a light weight, and thus the torsion beam axle 2 is It has no choice but to have a low stiffness value.

Accordingly, when the lateral force is input through the training day arm 1 during the turning driving of the vehicle, the torsion beam axle 2 having a low rigidity value is severely moved in the front, rear, left and right directions of the vehicle body and rolls on the vehicle in the turning driving. The phenomenon occurs, and the vehicle has a disadvantage in that the turning stability is bad.

In order to prevent this, when the rigidity of the torsion beam axle 2 is increased, the turning stability is improved, but the riding comfort is deteriorated. As a result, the conventional torsion beam axle type rear suspension system satisfies the turning stability and the riding comfort of the vehicle at the same time. It is difficult to make.

Accordingly, the present invention has been made to solve the above problems, to maintain the soft characteristics of the torsion beam axle as it is to prevent the deterioration of the ride comfort, and also to the torsion beam against the lateral force input during the turning of the vehicle It is an object of the present invention to provide a torsion beam axle type rear suspension for automobiles that can greatly improve the stability of turning by suppressing the movement of the axle in the front and rear and left and right directions as much as possible.

The present invention for achieving the above object, a pair of trailing arms arranged along the front and rear direction of the vehicle body at the left and right sides of the vehicle body, both ends are coupled to the pair of trailing arms while being disposed in the left and right direction of the vehicle body A torsion beam axle type rear suspension for automobile comprising a beam axle and a trailing arm bush coupled to one end of the trailing arm and connected to the vehicle body side, wherein the trailing arm is installed to connect the trailing arm and the vehicle body. It is characterized in that it further comprises a reinforcing device that enables the vertical movement of the movement and restrains forward and backward and left and right movement.

The reinforcing device includes a reinforcing rod having one end coupled to an outer surface of the trailing arm along a longitudinal direction of the torsion beam axle; One end of the reinforcing rod is connected and the other end is fixedly coupled to a vehicle body to which the trailing arm bush is coupled; The reinforcing rod and the reinforcing bracket are connected to allow the up and down movement of the reinforcing rod and to restrain the front and rear and left and right movements of the reinforcing rod.

Here, a portion of the reinforcing bracket connected to the reinforcing rod is formed with a bracket groove having a diagonal cross-section (C) cross-section opening in a vertical direction and a direction toward the trailing arm; The front end of the reinforcing rod having a rectangular parallelepiped shape is inserted into the bracket groove.

A pair of rollers are rotatably installed on both sides of the bracket groove in the front and rear directions of the vehicle body; The front end of the reinforcing rod is inserted between the pair of rollers so that both sides of the roller and the front end of the reinforcing rod are in contact with each other.

On the other hand, it is preferable that the connection portion of the reinforcing rod and the reinforcing bracket is formed at a right angle.

The torsion beam axle type rear suspension device according to the present invention can improve the riding comfort during normal straight running of the vehicle by the reinforcement device installed to connect the trailing arm and the vehicle body, and eliminate the roll phenomenon of the vehicle during the turning driving. There is an effect that can greatly improve the swing stability.

1 is a view of a conventional torsion beam axle type rear suspension,
2 is a view of a torsion beam axle type rear suspension device according to the present invention to which the reinforcement device is applied;
3 is an enlarged view of a portion to which the reinforcing device is applied in FIG.
4 is a cross-sectional view taken along the line II of FIG. 3.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 to 4, the torsion beam axle type rear suspension according to the present invention, a pair of trailing arms (1) arranged along the front and rear direction of the vehicle body on the left and right sides of the vehicle body, and in the left and right directions of the vehicle body; It is configured to include a torsion beam axle (2) which is disposed while being coupled to the pair of trailing arms (1).

A spring seat 3 and a spindle bracket 4 are respectively coupled to the rear end of the trailing arm 1 positioned toward the rear of the vehicle body with respect to the torsion beam axle 2, and the spring seat 3 A lower end of the coil spring 5 is seated, and a lower end of the shock absorber 6 connected to the vehicle body is coupled to the side of the coil spring 5.

A trailing arm bush 7 is coupled to an end of the trailing arm 1 facing forward, and the trailing arm bush 7 is coupled with a bush bracket 9 through a bush shaft 8. The bracket 9 has a configuration combined with the vehicle body.

In addition, the present invention is installed so as to connect the trailing arm 1 and the vehicle body 11 further enables the reinforcement device 20 to enable the vertical movement of the trailing arm (1) and to restrain the front and rear and left and right movements. It is configured to include.

The reinforcement device 20 has a reinforcing rod 21 having one end coupled to an outer side surface of the trailing arm 1 along the longitudinal direction of the torsion beam axle 2, and one end thereof being connected to the reinforcing rod 21. And the reinforcing bracket 22 having the other end fixedly coupled to the vehicle body 11 to which the trailing arm bush 7 is coupled.

Here, the structure in which the reinforcing rod 21 and the reinforcing bracket 22 are connected, the vertical movement of the reinforcing rod 21 is possible, and the front and rear and left and right movements of the reinforcing rod 21 are constrained. Structure.

The reinforcing rod 21 is formed in the shape of the rod 21a and the rectangular portion 21b, one end of the rod 21a is coupled to the outer surface of the trailing arm 1, and the The rectangular portion 21b is coupled to the other end of the circular rod portion 21a, and the rectangular portion 21b has a structure in which the reinforcing bracket 22 is connected.

However, the shape of the reinforcing rod 21 may be variously formed.

A portion of the reinforcing bracket 22 connected to the reinforcing rod 21 is formed with a bracket groove 22a having a diagonal (C) cross-section opening in a vertical direction and a direction toward the trailing arm 1.

The front end of the reinforcing rod 21 having a rectangular parallelepiped shape, that is, the rectangular portion 21b, is inserted into the bracket groove 22a.

The rectangular portion 21b fitted into the bracket groove 22a can move in the vertical direction as described above, but is in a constrained state that cannot move in the front, rear, and left and right directions.

In more detail, roller mounting grooves 22b are formed at both sides of the bracket groove 22a in the front and rear directions of the vehicle body, and the roller mounting grooves 22b are formed of steel. A pair of rollers 23 are rotatably installed, and the front end of the reinforcing rod 21, that is, the rectangular portion 21b, is inserted between the pair of rollers 23 so that the roller 23 and the reinforcing rod ( 21) It is a structure installed so that both sides of the tip contact each other.

Accordingly, the front end of the reinforcing rod 21 is smoothly moved by the rotation of the roller 23 in the vertical direction while being inserted into the bracket groove 22a so as to contact the pair of rollers 23. However, the movement in the front and rear and left and right directions is constrained by the roller 23 and cannot be moved.

On the other hand, the reinforcing rod 21 and the reinforcing bracket 22 is preferably a structure installed so that the connection portion at a right angle.

The operation of the embodiment of the present invention will be described below.

The suspension device according to the present invention is configured to maintain the characteristics of the torsion beam axle type in order to achieve weight reduction and cost reduction, and accordingly, the torsion beam axle 2 has a low weight so as to have a low rigidity value as before. It is a composition using a light one.

Therefore, in the general straight driving, the torsion beam axle 2 having a low stiffness value is sufficiently absorbed while being elastically deformed smoothly in the up and down direction with respect to the load transmitted from the road surface, so that the riding comfort of the vehicle is improved as before. Will remain the same.

In addition, as for the external force for moving the wheel in the vertical direction in the general straight running, the reinforcing rod 21 according to the present invention moves smoothly in the vertical direction along the bracket groove 22a, and thus the trailing arm 1 and the torsion beam axle 2 ) Also enables smooth movement of the up and down direction, and thus the external force is absorbed by the damping action of the coil spring (5) and the shock absorber (6) by the vertical movement of the trailing arm (1) and the torsion beam axle (2). It is sufficiently attenuated to maintain an improved ride comfort.

On the other hand, when the vehicle makes a turning run, the lateral force is transmitted through the wheel and the trailing arm 1, and when the torsion beam axle 2 moves severely in the front and rear directions and the left and right directions due to the lateral force, the vehicle causes a roll phenomenon. This results in poor swing stability.

However, in the embodiment of the present invention, since the reinforcing rod 21 is inserted into the bracket groove 22a, the movement in the left and right directions is restricted, and the forward and backward movement is restricted by the roller 23, so that when the driving is turned Even when the lateral force is transmitted through the trailing arm 1, the forward and backward movements of the torsion beam axle 2 rarely occur. Accordingly, the rolling phenomenon does not occur in the turning vehicle so that the turning stability of the vehicle is reduced. Is greatly improved.

As described above, the suspension device according to the present invention can improve the riding comfort when driving a general vehicle by the reinforcement device 20 installed to connect the trailing arm 1 and the vehicle body 11, and the vehicle during turning driving. There is an advantage that can greatly improve the swing stability by eliminating the roll phenomenon.

1-trailing arm 2-torsion beam axle
7-trailing arm bush 11-body
20-reinforcement 21-reinforcement rod
22-Reinforcement bracket 23-Roller

Claims (6)

A pair of trailing arms arranged along the front-rear direction of the vehicle body at left and right sides of the vehicle body, a torsion beam axle coupled to the pair of trailing arms while being disposed in the left and right direction of the vehicle body, and coupled to one end of the trailing arm, In a torsion beam axle type rear suspension for automobiles including a trailing arm bush installed to be connected to the vehicle body side,
The reinforcing device is installed to connect the trailing arm and the vehicle body to enable vertical movement of the trailing arm and to restrain forward, backward and leftward movement.
A torsion beam axle type rear suspension for automobiles further comprising a. The reinforcing device of claim 1, further comprising: a reinforcing rod having one end coupled to an outer surface of the trailing arm along a longitudinal direction of the torsion beam axle;
One end of the reinforcing rod is connected and the other end is fixedly coupled to a vehicle body to which the trailing arm bush is coupled;
The torsion beam axle type rear suspension of claim 1, wherein the reinforcing rod and the reinforcing bracket are connected to each other so that the up and down movement of the reinforcing rod is possible, and the front and rear and left and right movements of the reinforcing rod are constrained. The method of claim 2, wherein the portion of the reinforcing bracket connected to the reinforcing rod is formed in the groove groove of the cross-sectional shape of the Di (c) cross-section opening in the direction toward the vertical direction and the trailing arm;
A torsion beam axle type rear suspension for automobiles, characterized in that the front end of the reinforcing rod having a rectangular parallelepiped shape is inserted into the bracket groove. The method of claim 3, wherein a pair of rollers are rotatably installed on both sides of the bracket groove in the front and rear directions of the vehicle body;
A torsion beam axle type rear suspension for automobiles, characterized in that the front end of the reinforcing rod is inserted between the pair of rollers so that both sides of the roller and the front end of the reinforcing rod are in contact with each other. The torsion beam axle-type rear suspension of claim 4, wherein the pair of rollers are formed of steel. The torsion beam axle type rear suspension device according to claim 2, wherein the reinforcing rod and the connection portion of the reinforcing bracket are installed at right angles.
KR1020100073351A 2010-07-29 2010-07-29 Torsion beam axle type rear suspension system for vehicle KR20120011512A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100073351A KR20120011512A (en) 2010-07-29 2010-07-29 Torsion beam axle type rear suspension system for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100073351A KR20120011512A (en) 2010-07-29 2010-07-29 Torsion beam axle type rear suspension system for vehicle

Publications (1)

Publication Number Publication Date
KR20120011512A true KR20120011512A (en) 2012-02-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100073351A KR20120011512A (en) 2010-07-29 2010-07-29 Torsion beam axle type rear suspension system for vehicle

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111703264A (en) * 2020-06-19 2020-09-25 北京汽车集团越野车有限公司 Rubber bushing for suspension rod series part
KR20210014392A (en) 2019-07-30 2021-02-09 박우영 Torsion Beam Axle Type Rear Suspension System For Vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210014392A (en) 2019-07-30 2021-02-09 박우영 Torsion Beam Axle Type Rear Suspension System For Vehicle
CN111703264A (en) * 2020-06-19 2020-09-25 北京汽车集团越野车有限公司 Rubber bushing for suspension rod series part

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