KR20120019282A

KR20120019282A - Strut type suspension system for vehicle

Info

Publication number: KR20120019282A
Application number: KR1020100082609A
Authority: KR
Inventors: 조영건
Original assignee: 현대자동차주식회사
Priority date: 2010-08-25
Filing date: 2010-08-25
Publication date: 2012-03-06

Abstract

The present invention is to provide a strut-type suspension of a vehicle that can minimize the camber tolerance by stiffening the coupling of the bracket and the knuckle of the strut assembly to minimize the assembly tolerance;
In the fastening and fastening of the knuckle connection part for rotatably supporting the wheel and the lower bracket of the strut assembly with two bolts and nuts, the front and rear flanges of the bracket and the connection part of the knuckle are in surface contact with the bolt. It provides a strut suspension of the vehicle, characterized in that is fixed while forming.

Description

Strut type suspension system of automobile {STRUT TYPE SUSPENSION SYSTEM FOR VEHICLE}

The present invention relates to a strut-type suspension mainly applied to the front wheel of a vehicle, and more particularly, by striking the coupling of the bracket and the knuckle of the strut assembly to minimize the assembly tolerance, so that the camber tolerance can be minimized. It is about the type suspension.

Tilting the vehicle while driving is one of the most pointed out items among consumer complaints.

The cause of the vehicle tilting is a wheel alignment difference between the left and right wheels, and in particular, it is important to minimize the parts and assembly tolerances of the left and right wheels in order to minimize the camber difference between the left and right wheels.

Considering the above, the structure of the strut-type suspension device, which is widely applied to the steering wheel of a passenger car, as shown in FIG. 1, has a lower control arm at the lower end of the knuckle 4 for rotatably supporting the wheel 2. It is connected to the vehicle body via (6), and the upper end is integrally formed with the strut assembly 12 in which the coil spring 8 and the shock absorber 10 are integrally formed.

The upper end of the strut assembly 12 is suspended and supported by an insulator 14 through a vehicle body (not shown), and a stabilizer 16 is connected inside the middle of the shock absorber 10.

In addition, when the knuckle 4 is coupled to the lower bracket 18 of the strut assembly 12, the upper connecting portion 20 of the knuckle 4 is inserted between the brackets 18, as shown in FIGS. The upper and lower two bolts 24 and 26 are penetrated in the longitudinal direction of the vehicle body to fix the nuts 28 and 30.

In forming the male threads 32 and 34 on the upper and lower bolts 24 and 26, the nuts 28 and 30 are formed long enough to remain even when the nuts 28 and 30 are sufficiently fastened.

Accordingly, the bolt head portion without the threaded portion is in surface contact with the part to be fastened, and no play occurs. However, the threaded portion has no surface contact with the part being fastened, so that the clearance A is relatively low. It is largely generated, causing assembly tolerances.

As described above, the occurrence of the assembly tolerance between the bracket and the knuckle of the strut assembly is the same as that in which the clearance in the camber direction is generated in the strut assembly, which may cause the vehicle to tip.

Therefore, the present invention has been invented to solve the above problems, an object of the present invention is to strengthen the coupling of the bracket and the knuckle of the strut assembly to minimize the assembly tolerance, the strut type of the car to minimize the camber tolerance To provide a suspension.

In order to achieve the above object, the present invention, in connection to the knuckle for rotatably supporting the wheel, and fixing the lower bracket of the strut assembly with two bolts and nuts, the front and rear flanges of the bracket It provides a strut suspension of a vehicle, characterized in that the connection portion of the knuckle is fixed while making a surface contact with the bolt.

The bolt is formed after the male thread penetrates the bracket, and the nut is characterized in that the female screw portion is formed in the rear end portion.

According to the present invention configured as described above, the entire connecting portion of the bracket and the knuckle is fastened by a nut in a state in which the entire surface of the connecting portion of the bracket and the knuckle is not formed, the gap between the bolt and the bracket and the connecting portion of the knuckle This does not occur.

Accordingly, the play of the strut assembly is not generated due to the tolerance of the strut parts, which is advantageous for the wheel alignment tolerance management of the left and right wheels, thereby preventing the tilting of the vehicle during driving.

These drawings are for reference in describing exemplary embodiments of the present invention, and the technical spirit of the present invention should not be construed as being limited to the accompanying drawings.
1 is a front view of a typical strut type suspension device.
Figure 2 is an exploded perspective view of the main portion excerpts for explaining the prior art.
3 is an assembled cross-sectional view of FIG.
Figure 4 is a perspective view of the main portion excerpts for the description of the present invention.
5 is an assembled cross-sectional view of FIG. 4.
6 is a perspective view of a nut applied to the present invention.
FIG. 7 is a cross-sectional view taken from portion I of FIG. 4.

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.

Parts not related to the description are omitted in order to clearly describe the present invention, and the same reference numerals are used to designate the same or similar elements throughout the specification.

4, and 5 is a perspective view and assembly cross-sectional view of the main portion extract for explaining the present invention, in the description of the embodiment of the present invention, the symbols for the strut assembly, the bracket, the knuckle, and the connecting portion are the same as those of FIG. Give it 4 and 20.

In coupling the knuckle 4 to the lower bracket 18 of the strut assembly 12, the present invention provides a top connection of the knuckle 4 between the flanges 32 and 34 before and after the bracket 18. After inserting the 20, the upper and lower bolts 100 and 102 are penetrated in the longitudinal direction of the vehicle body to fix the nuts 104 and 106.

6 and 7, the upper and lower bolts 100 and 102 are formed with male threads 108 and 110 at their ends, but the non-applied section B is increased as compared with the prior art. Female threads 112 and 114 are formed on the nuts 104 and 106, but the thread unapplied section B is increased in the same manner as the male threads 108 and 110.

More specifically, the male thread parts 108 and 110 are formed after the upper and lower bolts 100 and 102 sufficiently pass through the front and rear flanges 32 and 34, and the female thread parts 112 ( 114) means that it is formed in a part of the rear end.

Accordingly, the entire lengths of the male thread parts 108 and 110 and the female thread parts 112 and 114 are shorter than in the related art.

At this time, the thread application section (C) of the upper and lower bolts 100, 102, and the thread application section (C) of the nuts 104, 106 are connected to the bracket 18 and the knuckle (4) (20) ) Is set to withstand the load sufficient to fasten and fasten.

When the connecting portion 20 of the bracket 18 and the knuckle 4 is fastened and fixed using the bolts 100 and 102 and the nuts 104 and 106 as described above, the bolts 100 and 102 are The male threads 108 and 110 are positioned past the flange 34 of the through-direction bracket 18, in which the nuts 104 and 106 are fastened.

Then, the whole of the connecting portion 20 of the bracket 18 and the knuckle 4 is in contact with the nut 104 and 106 as shown in FIG. By tightening, no play occurs between the bolts 100 and 102 and the flanges 32 and 34 of the bracket 18 and the connection portion 20 of the knuckle 4.

As the play of the strut assembly 12 is not generated due to the tolerance of the strut parts, it is advantageous to manage wheel alignment tolerances of the left and right wheels, thereby preventing the vehicle from shifting during driving.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the scope of the invention.

2 ... wheel 4 ... knuckle
12 ... Strut Assembly 18 ... Bracket
20 ... Connection 100,102 ... Bolt
104,106 ... Nut 108,110 ... Male thread
112,114 Female thread A ... clearance
B ... section without threads C ... section with threads

Claims

The connecting portion 20 of the knuckle 4 rotatably supporting the wheel 2 and the lower bracket 18 of the strut assembly 12 have two bolts 100 and 102 and a nut 104 up and down. In fastening and fixing with 106,
Strut suspension of a vehicle, characterized in that the front and rear flanges 32 and 34 of the bracket 18 and the connecting portion 20 of the knuckle 4 are fixed while making surface contact with the bolts 100 and 102. Device.

The method of claim 1,
The bolts 100 and 102 are
The male thread portion 108, 110 is formed after passing through the bracket 18, the nut 104, 106 is a female thread characterized in that the female portion 112, 114 is formed in the rear end portion Strut type suspension system.