KR20160056394A

KR20160056394A - Geometric independent variable type double wishbone suspension system

Info

Publication number: KR20160056394A
Application number: KR1020140155658A
Authority: KR
Inventors: 김보민; 고대식; 김종민
Original assignee: 현대자동차주식회사
Priority date: 2014-11-10
Filing date: 2014-11-10
Publication date: 2016-05-20
Also published as: KR102041918B1

Abstract

The geometric independent variable double wishbone suspension is launched. The geometric independent variable double wishbone suspension according to an embodiment of the present invention A knuckle body having an upper coupling end formed on both sides of the upper portion and a lower coupling end formed on both lower sides thereof; Upper and lower geometry varying means each having a bolt fastening structure on both upper and lower coupling ends of the knuckle body to variably adjust a king pin axis and a cast angle; A tie rod connecting body configured to be able to adjust a fastening position with a tie rod, at a front lower one side of the knuckle body; An upper arm which is ball-jointed to the upper geometry varying means and is connected to the upper geometry varying means through an upper position varying means, the upper arm being capable of adjusting the ball joint fastening position in the forward, backward, and transverse directions of the vehicle; And a lower arm which is ball jointed to the lower geometry varying means and is connected to the lower geometry varying means through a lower position varying means, the lower arm being capable of adjusting the ball joint fastening position in the forward, backward and lateral directions of the vehicle.

Description

[0001] GEOMETRIC INDEPENDENT VARIABLE TYPE DOUBLE WISHBONE SUSPENSION SYSTEM [0002]

The present invention relates to a geometrically independent variable double wishbone suspension, and more particularly to a geometric independent variable double wishbone suspension capable of independently varying the geometry factor associated with a kingpin axis.

In general, a double wishbone suspension exists between a vehicle body and a wheel, and these two rigid bodies are connected to an upper arm and a lower arm to mitigate shock and vibration from the road surface during traveling, thereby improving ride comfort and running stability. Is supported by a spring, a shock absorber, and the like. In the other direction, various arms and rods are used to suitably balance high rigidity and flexibility so as to mechanically balance the relative motion between the vehicle body and the wheel.

Especially, the double wishbone suspension which is applied to a high performance vehicle or a racing vehicle is applied to a geometric variable suspension component in order to realize a handling characteristic suitable to driver's preference and driving condition, but has many limitations.

In other words, the conventional geometric variable suspension system mainly controls the initial toe or camber only by kinematics, so there is a restriction on the change of the kinematic or compliance characteristic that can be obtained by moving the king pin axis. In particular, double wishbone (in-wheel type) suspension, which is mainly applied to high-performance vehicles, has a fixed king pin axis.

In addition, since the conventional geometric variable suspension system adjusts the length of the suspension arm or fastens the hardware such as the cam bolt and the cam washer to the bracket having the eccentric hole in the body side mounting portion of the rock, Most can not be done.

For example, if the length of the rock is adjusted to change the Kingfin offset, it will be accompanied by a change in the undesirable geometry characteristics as the length of the rock changes.

FIGS. 1, 2, and 3 are conceptual diagrams for explaining problems caused by adjustment of a ground kingpin offset, a caster, and a cast trail through a general double wishbone suspension.

Referring to FIG. 1, in the conventional double wishbone suspension 100, in order to reduce the ground kinphin offset K while maintaining the other geometric characteristics and to reduce the moment around the king pin shaft 101 by the forward and backward forces, If the length of the camshaft 103 is reduced or the length of the lower arm 105 is increased, the characteristics of the camber C are changed and the angle of swinging of the ball joint 107 becomes disadvantageous.

2, when the position of the ball joint 107 is moved by the upper arm 103 of the tuning kit type in order to increase only the caster angle CA, it is possible to assemble the axle by rotating the axle, There is a problem that the length L and the caster trail CT are increased to change most of the related geometric characteristics.

3, when the upper arm 103 and the lower arm 105 are both used as a tuning kit type to move the king pin shaft 101 in a forward direction in order to increase only the caster trail CT, There is a disadvantage in that the toe characteristic and the steering characteristic according to the reduction of the length L are changed.

The embodiment of the present invention allows the center point position of each ball joint mounting portion to be adjusted in the front, rear, and inside and outside directions of the vehicle body through the upper and lower geometry varying means formed on the upper and lower portions of the knuckle body, The present invention provides a geometric independent variable double wishbone suspension capable of adjusting the position of the ball joint in the front, rear, and inside directions of the vehicle body via the variable means, thereby changing the geometric characteristic factors more independently than the conventional method.

In particular, it is intended to provide a geometric independent variable double wishbone suspension capable of adjusting moments around a king pin axis due to front / rear force, lateral force, and effective length of a rock.

In one or more embodiments of the present invention, a knuckle body having both upper side coupling ends formed on both sides of the upper side and both lower side coupling ends formed on both sides of the lower side; Upper and lower geometry varying means each having a bolt fastening structure on both upper and lower coupling ends of the knuckle body to variably adjust a king pin axis and a cast angle; A tie rod connecting body configured to be able to adjust a fastening position with a tie rod, at a front lower one side of the knuckle body; An upper arm which is ball-jointed to the upper geometry varying means and is connected to the upper geometry varying means through an upper position varying means, the upper arm being capable of adjusting the ball joint fastening position in the forward, backward, and transverse directions of the vehicle; And a lower arm which is ball-jointed to the lower geometry varying means and is connected to the lower geometry varying means through lower position varying means, the lower arm being capable of adjusting the ball joint fastening position with respect to the longitudinal and transverse directions of the vehicle. This suspension can be provided.

The upper geometry varying means includes bolts fastened between the upper and lower upper coupling ends so as to be positionally adjustable in the longitudinal direction of the vehicle body, and fastening portions formed with threaded holes on both sides in the vehicle width direction. And an upper ball joint mounter bolted to the fastening portion so as to be adjustable in the vehicle body width direction with respect to the upper adjustment block, and an upper ball joint mounter to which the ball joint of the upper arm is fastened.

A plurality of spacers may be interposed between the upper and lower upper coupling blocks and between the upper and lower sides of the upper adjustment block to bolt together.

A plurality of washers for maintaining a gap may be interposed between the fastening portion of the upper adjustment block and the upper ball joint mounter so as to be bolted together.

Further, the lower geometry varying means may include a superimposed bolt hole in which a plurality of bolt holes are overlapped in the vehicle width direction on both the lower joint ends, and a ball joint of the lower arm is disposed between the both lower joint ends, A lower ball joint mounter; And a lower ball joint mounter which is integrally formed on both sides of the lower ball joint mounter so as to adjust positions of the lower ball joint mounter in the longitudinal direction and the vehicle width direction of the vehicle body, And may be composed of both side fastening ends to be fastened with bolts.

Further, a plurality of spacers for maintaining the respective intervals may be interposed between the both side lower coupling ends and the both side fastening ends, and they may be bolted together.

Also, the tie-rod connector may be bolted to a plurality of bolt holes formed at a front lower portion side of the knuckle body so as to be adjustable in the longitudinal direction of the vehicle body via a plurality of spacers.

The upper arm may include an upper upper arm constituting a ball joint of the upper arm to be coupled to the upper ball joint mounter; An inner upper arm connected to the outer upper arm and coupled to the vehicle body; And upper position varying means for fastening the outer and inner upper arms to each other and adjusting the position of the ball joint of the upper arm relative to the vehicle body front and rear and the vehicle width direction.

The upper position varying means is integrally formed at an end of the outer upper arm, and has an outer upper arm fastening plate formed with a plurality of overlapping bolt holes overlapping with bolt holes in a longitudinal direction of the vehicle body; A plurality of bolt holes formed integrally with the ends of the inner upper arm and overlapping bolt holes in the longitudinal direction of the vehicle body so as to be bolted to each other through the bolt holes of the outer upper arm tightening plate, Arm clamping plate; And a plurality of spacers interposed between the outer and inner upper arm fastening plates for bolt fastening together to adjust the length of the upper arm in the vehicle width direction.

Further, the lower arm may include an outer lower arm constituting a ball joint of a lower arm engaged with the lower ball joint mounter; An inner lower arm connected to the outer lower arm and coupled to the vehicle body; And lower position varying means for fastening the outer and inner lower arms to each other and adjusting the position of the ball joint of the lower arm with respect to the vehicle longitudinal direction and the vehicle width direction.

The lower position changing means is formed integrally with an end portion of the outer lower arm, and has a plurality of bolt holes formed in a cross section in which bolt holes are overlapped in a longitudinal direction of the vehicle body. A plurality of bolt holes formed integrally with the ends of the inner lower arm and having bolt holes overlapping in a longitudinal direction of the vehicle body, the inner bolt fastening bolts being fastened to the outer lower arm fastening bolt through the bolt holes, Arm clamping plate; And a plurality of spacers interposed between the outer and inner lower arm fastening plates so as to adjust lengths of the lower arms in the vehicle width direction and bolted together.

The embodiment of the present invention allows the center point position of each ball joint mounting portion to be adjusted in the front, rear, and inside and outside directions of the vehicle body through the upper and lower geometry varying means formed on the upper and lower portions of the knuckle body, It is possible to adjust the position of the ball joint in the front, rear, and inside directions of the vehicle body, thereby changing the geometric characteristic factors more independently than conventional methods. Particularly, the moment around the king pin axis due to the front / Setting, and effective length can be adjusted independently.

Thus, in the vehicle development stage, the effects of the variables can be evaluated in detail when evaluating the characteristics of the geometric principle.

FIG. 1 is a conceptual diagram for explaining a problem caused by adjustment of a ground kingpin offset through a general double wishbone suspension.
FIG. 2 is a conceptual diagram for explaining a problem caused by adjustment of a caster through a general double wishbone suspension.
3 is a conceptual diagram for explaining a problem caused by adjustment of a caster trail through a general double wishbone suspension.
4 is an exploded perspective view of a geometrically independent variable double wishbone suspension according to an embodiment of the present invention.
5 is an exploded perspective view of an upper geometry variable means on a knuckle body applied to a geometrically independent variable double wishbone suspension in accordance with an embodiment of the present invention.
6 is a partially projected perspective view of a lower geometry variable means on a knuckle body applied to a geometrically independent variable double wishbone suspension in accordance with an embodiment of the present invention.
7 is an exploded perspective view of a tie rod coupling body on a knuckle body applied to a geometrically independent variable double wishbone suspension according to an embodiment of the present invention.
8 is an exploded perspective view of an upper arm applied to a geometrically independent variable double wishbone suspension according to an embodiment of the present invention.
9 is a cross-sectional view of an upper position varying means of an upper arm applied to a geometrically independent variable double wishbone suspension according to an embodiment of the present invention.
10 is an exploded perspective view of a lower arm applied to a geometrically independent variable double wishbone suspension according to an embodiment of the present invention.
11 is a side view of a lower arm applied to a geometrically independent variable double wishbone suspension according to an embodiment of the present invention.

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

In order to clearly illustrate the embodiments of the present invention, portions not related to the description are omitted.

FIG. 4 is an exploded perspective view of a geometrically independent variable double wishbone suspension according to an embodiment of the present invention, FIG. 5 is a perspective view of an upper geometry variable means on a knuckle body applied to a geometric independent variable double wishbone suspension FIG. 6 is a partial perspective view of a lower geometry variable means on a knuckle body applied to a geometrically independent variable double wishbone suspension according to an embodiment of the present invention, and FIG. 7 is a perspective view of a geometry independent variable geometry Fig. 3 is an exploded perspective view of a tie rod connecting body on a knuckle body applied to a double wishbone suspension.

4, a geometric independent variable double wishbone suspension according to an embodiment of the present invention includes a knuckle body 1, an upper geometry variable means 10, a lower geometry variable means 20, a tie rod connector 30, An upper arm 40, and a lower arm 50, as shown in Fig.

The knuckle body 1 has upper and lower side upper coupling ends 3 on both sides and lower side coupling ends 5 on both sides of the lower side.

The upper and lower side coupling ends 3 and 5 are formed at regular intervals.

Referring to FIG. 5, the upper geometry variable means 10 is fastened with bolts B between both upper coupling ends 3 of the knuckle body 1.

The upper geometry variable means 10 is composed of an upper adjustment block 11 and an upper ball joint mounter 13.

The upper adjustment block 11 is interposed between the upper and lower upper coupling ends 3 and is fastened with bolts B so as to be adjustable in the front and rear direction of the vehicle body and has threaded holes 17 formed on both sides in the vehicle width direction, (15) are integrally formed.

The upper ball joint mounter 13 is fastened to the fastening portion 15 with bolts B so that the upper ball joint mounter 13 can be adjusted in position with respect to the upper adjustment block 11 in the vehicle width direction.

At this time, a plurality of spacers 19 for maintaining the respective intervals are interposed between the upper and lower side upper coupling blocks 3 and 11, and the bolts B are fastened together.

A plurality of washers W are interposed between the fastening portions 15 of the upper adjustment block 11 and the upper ball joint mounter 13 to be spaced from each other and fastened together with bolts B, The ball joint (BJ) is coupled to the ball joint mounter (13).

The upper arm 40 coupled to the upper ball joint mounter 13 with the ball joint BJ is adjusted in position of the center point of the mounting portion of the ball joint BJ through the spacer 19 and the washer W. [

That is, the angular interval between the both upper side coupling edges 3 and both sides of the upper adjustment block 11 is adjusted through the acceleration and deceleration of the spacer 19, and the angle between the coupling part 15 of the upper adjustment block 11 The gap between the upper ball joint mounters 13 is adjusted by adjusting the degree of the washer W so that the adjustment of the angle of the king pin shaft and the caster is adjusted by adjusting the center point position of the mounting portion of the ball joint BJ of the upper arm 40 .

Referring to FIG. 6, the lower geometry variable means 20 includes a lower ball joint mounter 21 and both side fastening ends 23, which are fastened to the both side lower coupling ends 5.

Here, the bolt holes BH are formed on the both side lower coupling ends 5 so that a plurality of bolt holes are overlapped in the vehicle width direction.

The lower ball joint mounter 21 is disposed between the lower side coupling ends 5 so that the ball joint BJ of the lower arm 50 is fastened.

The both side fastening ends 23 are integrally formed on both sides of the lower ball joint mounter 21.

The two side fastening ends 23 are fastened to the respective bolt holes BH with bolts B in the longitudinal direction of the vehicle body corresponding to the outer sides of the both side lower coupling ends 5.

At this time, a plurality of spacers 25 for holding the respective gaps are interposed between the both side lower coupling ends 5 and the both side fastening ends 23 and are fastened together with the bolts B.

Here, the lower arm 50 coupled to the lower ball joint mounter 21 with a ball joint BJ has a center point position of the mounting portion of the ball joint BJ through the overlapping bolt hole BH and the spacer 25 .

That is, the angular intervals between the both side lower coupling ends 5 and the side coupling ends 23 are adjusted through the acceleration / deceleration of the spacer 25.

The lower ball joint mounter 21 and the two side fastening ends 23 are positioned at a center point of the ball joint mounting portion of the lower arm 50 in accordance with the fastening position of the bolt B with respect to the bolt hole BH. The position is adjusted, and the variable adjustment of the king pin axis and the cast angle becomes possible.

Referring to FIG. 7, the tie rod connector 30 is provided at one side of the front lower part of the knuckle body 1 so as to be able to adjust a fastening position with respect to a tie rod (not shown) A plurality of bolt holes 31 are formed on one side of the front lower part.

The tie rod connection body 30 is fastened to the bolt hole 31 with bolts B so that the tie rod connection body 30 can be adjusted in the longitudinal direction of the vehicle body via a plurality of spacers 33.

Here, the tie rod connector 30 can adjust the length of the effective arm through the acceleration / deceleration of the spacer 33.

FIG. 8 is an exploded perspective view of an upper arm applied to a geometric independent variable double wishbone suspension according to an embodiment of the present invention, FIG. 9 is a perspective view of an upper arm applied to a geometric independent variable double wishbone suspension according to an embodiment of the present invention, 1 is a cross-sectional view of the upper position varying means.

8 and 9, the upper arm 40 is coupled to the upper ball joint mounter 13 of the upper geometry variable means 10 through a ball joint (BJ).

The upper arm 40 is composed of an upper upper arm 41, an inner upper arm 43 and an upper position varying means 45. The upper upper arm 41 is connected to the upper arm 40 through an upper position varying means 45.

The outer upper arm 41 constitutes a ball joint BJ of the upper arm 40 which is fastened to the upper ball joint mounter 13.

Further, the inner upper arm 43 is connected to the outer upper arm 41 and is coupled to the vehicle body.

The upper position varying means 45 adjusts the position of the ball joint BJ of the upper arm 40 with respect to the front and rear of the vehicle body and the vehicle width direction by fastening the outer and inner upper arms 41 and 43 to each other. do.

Here, the upper position varying means 45 is composed of an outer upper arm fastening plate 45a and an inner upper arm fastening plate 45b.

The outer upper arm fastening plate 45a is integrally formed at the end of the outer upper arm 41 and has a plurality of overlapping bolt holes BH in which the bolt holes are overlapped in the longitudinal direction of the vehicle body.

The inner upper arm fastening plate 45b is formed integrally with an end of the inner upper arm 43. A plurality of bolt holes BH are formed on the cross section so that the bolt holes are overlapped in the longitudinal direction of the vehicle body, And are fastened to each other by the bolts B through the upper arm fastening plate 45a and the respective bolt holes BH.

Between the outer and inner upper arm fastening plates 45a and 45b so as to adjust the length of the upper arm 40 in the vehicle width direction, a plurality of spacers 47 may be interposed between the upper and lower upper arm fastening plates 45a and 45b, .

At this time, the upper arm 40 is connected to the upper position varying means 45, so that it is possible to adjust the fastening position of the ball joint BJ in the front, rear, and side directions of the vehicle.

That is, the upper position varying means 45 adjusts the gap between the outer upper arm fastening plate 45a and the inner upper arm fastening plate 45b through the spacer 57, The engagement position of the ball joint BJ of the upper arm 40 with respect to the lateral direction and the longitudinal direction of the vehicle is adjusted according to the fastening position of the bolt B with respect to the upper arm 40. [

FIG. 10 is an exploded perspective view of a lower arm applied to a geometrically independent double wishbone suspension according to an embodiment of the present invention, and FIG. 11 is a perspective view of a lower arm applied to a geometric independent variable double wishbone suspension according to an embodiment of the present invention. Fig.

10 and 11, the lower arm 50 is coupled to the lower ball joint mounter 21 of the lower geometry varying means 20 through the ball joint BJ and the lower position varying means 55 And is composed of an outer lower arm 51, an inner lower arm 53, and a lower position varying means 55. As shown in FIG.

The outer lower arm 51 constitutes a ball joint BJ of the lower arm 50 which is fastened to the lower ball joint mounter 21.

The inner lower arm 53 is connected to the outer lower arm 51 and is coupled to the vehicle body.

The lower position varying means 55 adjusts the positions of the ball joints BJ of the lower arm 50 with respect to the vehicle longitudinal direction and the vehicle width direction by fastening the outer and inner lower arms 51, do.

Here, the lower position varying means 55 includes an outer lower arm fastening plate 55a and an inner lower arm fastening plate 55b.

The outer lower arm fastening plate 55a is integrally formed with the end of the outer lower arm 51 and has a plurality of overlapping bolt holes BH in which bolt holes are overlapped in the longitudinal direction of the vehicle body.

The inner lower arm fastening plate 55b is formed integrally with an end of the inner lower arm 53. A plurality of overlapping bolt holes BH are formed on the cross section so that bolt holes are overlapped in the longitudinal direction of the vehicle body, (B) through the lower arm fastening plate 55a and each of the overlapping bolt holes BH.

Between the outer and inner lower arm fastening plates 55a and 55b so as to adjust the length of the lower arm 50 in the vehicle width direction, a plurality of spacers 57 may be interposed between the outer and inner lower arm fastening plates 55a and 55b, .

At this time, the lower arm 50 is connected through the lower position varying means 55, so that it is possible to adjust the fastening position of the ball joint BJ in the front, rear, and side directions of the vehicle.

That is, the lower position varying means 55 adjusts the gap between the outer lower arm fastening plate 55a and the inner lower arm fastening plate 55b through the spacer 57 and the overlapping bolt holes BH, The fastening position of the ball joint BJ of the lower arm 50 with respect to the lateral direction and the longitudinal direction of the vehicle is adjusted according to the fastening position of the bolt B.

The geometric independent variable double wishbone suspension according to an embodiment of the present invention is constructed such that upper and lower geometric variable means 10 and 20 constituting upper and lower portions of a knuckle body 1 are disposed in front and rear, (BJ) mounting portions of the lower arm 40 and the lower arm 50. The upper arm 40 and the lower arm 50 are provided with respective position changing means 45 and 55 It is possible to adjust the position of the ball joint in the front, rear, and inside directions of the vehicle body, and thus the geometric characteristic factors can be changed independently from the existing method.

In particular, it is possible to independently adjust the moments around the axis of the king pin due to the front / rear force, lateral force, and the effective length of the arm. Thus, the influence of the variables can be evaluated in evaluating the characteristics of the principle of geometry in the vehicle development stage .

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

1: Knuckle body
3: upper side coupling ends
5: Both side lower coupling ends
1O: upper geometry variable means
11: upper adjustment block
13: Upper ball joint mounter
15:
17: screw hole
19: Spacer
20: Lower geometry variable means
21: Lower ball joint mounter
23:
25: Spacer
30: tie rod connector
31: Bolt hole
33: Spacer
40: upper arm
41: outer upper arm
43: inner upper arm
45: upper position varying means
45a: outer upper arm fastening plate
45b: inner upper arm fastening plate
47: Spacer
50: Lower arm
51: lateral lower arm
53: Inner side arm
55: lower position variable means
55a: outer lower arm fastening plate
55b: Inner side arm fastening plate
57: Spacer
B: Bolt
W: Washer
BH: Overlap bolt hole
BJ: Ball joint

Claims

A knuckle body having both upper side coupling ends formed on both sides of the upper side and both lower side coupling ends formed on both sides of the lower side;
Upper and lower geometry varying means each having a bolt fastening structure on both upper and lower coupling ends of the knuckle body to variably adjust a king pin axis and a cast angle;
A tie rod connecting body configured to be able to adjust a fastening position with a tie rod, at a front lower one side of the knuckle body;
An upper arm which is ball-jointed to the upper geometry varying means and is connected to the upper geometry varying means through an upper position varying means, the upper arm being capable of adjusting the ball joint fastening position in the forward, backward, and transverse directions of the vehicle; And
A lower arm which is ball-jointed to the lower geometry varying means and is connected to the lower geometry varying means through a lower position varying means, the lower arm being capable of adjusting the ball joint fastening position in the forward, backward, and transverse directions of the vehicle;
The double wishbone suspension with geometric independent variable geometry.

The method according to claim 1,
The upper geometry variable means
An upper adjusting block which is interposed between the upper side coupling ends and is bolted so as to be positionally adjustable in the longitudinal direction of the vehicle body and on both sides in the vehicle width direction, And
An upper ball joint mount bolt fastened to the fastening portion so as to be adjustable in a vehicle body width direction with respect to the upper adjustment block and to which a ball joint of the upper arm is fastened;
Geometry independent variable double wishbone suspension.

3. The method of claim 2,
And a plurality of spacers for maintaining an interval between the upper and lower upper coupling blocks and the upper and lower adjustment blocks are bolted together.

3. The method of claim 2,
Wherein a plurality of washers are provided between the fastening portion of the upper adjustment block and the upper ball joint mounter so as to maintain a gap therebetween and are bolted together.

The method according to claim 1,
The lower geometry variable means
A plurality of bolt holes are formed in the vehicle width direction on the both side lower coupling ends,
A lower ball joint mounter which is disposed between the lower side coupling ends and to which the ball joint of the lower arm is coupled; And
And the lower ball joint mounter is integrally formed on both sides of the lower ball joint mounter so as to adjust positions of the lower ball joint mounter in the front and rear direction of the vehicle body and in the vehicle width direction, Both side fastening ends to be fastened;
Geometric independent variable double wishbone suspension.

6. The method of claim 5,
And a plurality of spacers for maintaining an interval between the two lower coupling ends and the two side coupling ends are bolted together.

The method according to claim 1,
The tie-
And a plurality of bolts formed on one side of a front lower portion of the knuckle body, the bolts being bolted to be adjustable in the longitudinal direction of the vehicle body via a plurality of spacers.

3. The method of claim 2,
The upper arm
An upper upper arm constituting a ball joint of an upper arm to be coupled to the upper ball joint mounter;
An inner upper arm connected to the outer upper arm and coupled to the vehicle body; And
Upper position varying means for fastening the outer and inner upper arms to each other and adjusting the position of the ball joint of the upper arm relative to the front and rear of the vehicle body and the vehicle width direction;
The double wishbone suspension with geometric independent variable geometry.

9. The method of claim 8,
The upper position varying means
An outer upper arm fastening plate integrally formed at an end of the outer upper arm and having a plurality of bolt holes formed by overlapping bolt holes in a longitudinal direction of the vehicle body;
A plurality of bolt holes formed integrally with the ends of the inner upper arm and overlapping bolt holes in the longitudinal direction of the vehicle body so as to be bolted to each other through the bolt holes of the outer upper arm tightening plate, Arm clamping plate; And
A plurality of spacers interposed between the outer and inner upper arm fastening plates to adjust the length of the upper arm in the vehicle width direction and bolted together;
Double wishbone suspension with independent geometry with variable geometry.

6. The method of claim 5,
The lower arm
An outer lower arm constituting a ball joint of a lower arm fastened to the lower ball joint mounter;
An inner lower arm connected to the outer lower arm and coupled to the vehicle body; And
Lower position varying means for fastening the outer and inner lower arms to each other and adjusting the position of the ball joint of the lower arm with respect to the vehicle longitudinal direction and the vehicle width direction;
The double wishbone suspension with geometric independent variable geometry.

11. The method of claim 10,
The lower position varying means
An outer lower arm fastening plate integrally formed on an end of the outer lower arm and having a plurality of bolt holes formed by overlapping bolt holes in a longitudinal direction of the vehicle body;
A plurality of bolt holes formed integrally with the ends of the inner lower arm and having bolt holes overlapping in a longitudinal direction of the vehicle body, the inner bolt fastening bolts being fastened to the outer lower arm fastening bolt through the bolt holes, Arm clamping plate; And
A plurality of spacers interposed between the outer and inner lower arm fastening plates to adjust the length of the lower arm in the vehicle width direction and bolted together;
Double wishbone suspension with independent geometry with variable geometry.