KR100610341B1 - Rear trailing arm assembling structure of an vehicle - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly structure of a rear trailing arm of an automobile, wherein in a support structure of a rear trailing arm rotatably mounted to a vehicle body via a bolt, the rear trailing arm is fixed to the rear floor side member 13 and is located inside the vehicle body. The nut 18 is mounted on the site by welding and the area on which the rear trailing arm is mounted is fixed to the inner rear trailing mounting bracket 15 and the rear side seal inner panel 14 formed to be inclined at an angle to the inside of the vehicle. And between the outer rear trailing mounting bracket 16 and the inner and outer rear trailing mounting brackets 16 and 16, the portions on which the rear trailing arms are mounted are formed to be inclined at an angle to the inside of the vehicle. And a bolt 12 with a head located on the outer rear trailing mounting bracket 16 to penetrate the bushing of the rear trailing arm. With, and this structure is easy to assemble, and improves the performance of the rear suspension.

Car, rear suspension, trailing arm, centering, assembly

Description

Rear trailing arm assembling structure of an vehicle

1 is a schematic block diagram showing the assembly structure of a rear trailing arm of a vehicle according to the prior art as a whole;

Figure 2 is a schematic configuration diagram showing the assembly structure of the rear trailing arm of the automobile according to the present invention as a whole;

3 is a view showing a rear trailing mounting reinforcement is further provided in the assembly structure of the present invention;

4 is an explanatory view for explaining the centering function in which the bush portion of the rear trailing arm is mounted on the rear trailing mounting bracket of the present invention.

※ Explanation of symbols about main part of drawing ※

12: Bolt

13: rear floor side members

14: rear side seal inner panel

15: inner rear trailing mounting bracket

16: outer rear trailing mounting bracket

17: rear trailing mounting reinforcement

17a: seating part

18: Nut

The present invention relates to an assembling structure of a rear trailing arm of a vehicle, and more particularly, to an assembling structure of a rear trailing arm of a vehicle that is easy to assemble and that the performance of the rear suspension can be improved.

In general, in the case of a passenger car, the rear trailing arm that supports the front and rear loads of the vehicle in the rear suspension plays a very important role because it functions as a safety component.

The assembly structure of the rear trailing arm of a vehicle according to the prior art is known in various forms, as shown in Figure 1, for example, a panel constituting the vehicle, such as the rear floor side member 1 and the rear side seal inner panel ( 2) the rear suspension module 4, ie the bushing of the rear trailing arm, is rotatably mounted via the bracket and the reinforcement 3.

At this time, the panel, that is, the rear floor side member 1, the rear side seal inner panel 2, the bracket and the reinforcement 3, etc. are provided in a pre-assembled state, and in this state the rear suspension module 4 This bolt 5 has a structure fixed to it.

However, the bolt (5) is fitted by the tool such as impactor (7) after the head is fitted so as to be located on the fuel tank (8) side, the nut (6) fitted to the bolt (5) is mounted on the panel bracket And the reinforcement 3 or the like in the closed end portion, the distance between the head of the bolt 5 and the fuel tank 8 is very small, so that the impactor 7 or the like is provided. In the latter case, if the work space using the tool is narrow, the work efficiency is lowered. In the latter case, if the nut 6 is dropped in the middle of the assembling work, the assembling work is impossible. It was a problem that the repair work for fixing the nut 6 was impossible.

The present invention is to solve the above-mentioned conventional problems, to provide a sufficient working space using a tool such as an impactor to facilitate the assembly work and further improve the performance of the rear suspension of the rear trailing arm of the vehicle The purpose is to provide an assembly structure.

As a technical configuration for achieving the above object, the present invention, in the support structure of the rear trailing arm rotatably mounted to the vehicle body via a bolt, is fixed to the rear floor side member and a nut on the inner portion of the vehicle body The rear trailing mounting bracket, which is mounted by welding and the rear trailing arm is inclined at an angle to the inside of the vehicle, and the portion where the rear trailing arm is fixed and fixed to the rear side seal inner panel An outer rear trailing mounting bracket formed to be inclined at an angle to the inside of the vehicle so as to be parallel to the rear trailing mounting bracket, and an outer rear through the bush portion of the rear trailing arm positioned between the inner and outer rear trailing mounting brackets; Head position on trailing mounting bracket To the assembly structure of the automobile rear of the trailing arm, it characterized in that it comprises a bolt which is fastened to the nut by the maryeonham.

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

Figure 2 is a schematic configuration diagram showing the overall assembly structure of the rear trailing arm of the vehicle according to the present invention, the bushing portion of the rear suspension module 11, ie the rear trailing arm can be rotated to the vehicle body by the bolt 12 And the head of the bolt 12 is located in the outward direction of the vehicle body, and the nut 18 to which the bolt 12 is coupled is located in the inward direction of the vehicle body.

In addition, the bolt 12 is installed at an angle θ, for example, inclined by about 24 ° such that the head is located at a lower portion than the portion to which the nut 18 is coupled, and the bolt 12 is inclined. In order to correspond to the shape of the other components and the installation structure is adopted.

The bushing portion of the rear trailing arm is mounted via a rear trailing mounting bracket 15, 16 at a predetermined position of the vehicle body, preferably at the boundary between the rear floor side member 13 and the rear side seal inner panel 14. .
The extension part of the rear floor side member 13 and the extension part of the rear side seal inner panel 14 are fixed to each other, and the rear trailing mounting bracket (1) of one side of the fixed part, for example, the rear floor side member 13 side ( 15) 16 are fixed.
Alternatively, as shown in FIG. 3, a portion extending from the rear floor side member 13 may have a substantially 'U' shape, and the rear side seal inner panel 14 may be fixed to the portion, and thus may be coupled to each other. Rear trailing mounting brackets 15 and 16 may be fixed to the rear floor side member 13 and the rear side seal inner panel 14, respectively. FIG. 2 is a view in which the bolt 12 of FIG. 2 is horizontally positioned by rotating a predetermined angle θ in a clockwise direction, and a portion where the head of the bolt 12 is coupled to the nut 18. The rear floor side member 13, the rear side seal inner panel 14 and the rear trail of FIG. 3, which are parts for supporting the bolt 12 so that they can be mounted at an angle θ inclined so as to be located further lower It is obvious that the ring mounting brackets 15, 16 and the like are also inclined at an angle θ as shown in FIG.

In addition, a rear trailing mounting reinforcement 17 may be additionally installed between the rear trailing mounting brackets 15 and 16. In this case, the rear trailing mounting rein The garment 17 has an approximate '∩' shaped cross section, and a seating portion 17a having an arc shape is formed at the center of both lower ends. This seating portion 17a functions to guide the rear suspension module 11, ie the bushing of the rear trailing arm, to be automatically centered and seated on the seating portion 17a.

In addition, a nut 18 is fixedly installed on an inner rear trailing mounting bracket 15 located inside the vehicle, and the nut 18 is to be viewed from the outside of the rear trailing mounting bracket 15 and 16. It is fixed in an open space so that it can

In the above, the rear trailing mounting brackets 15 and 16 extend parallel to each other at a predetermined distance, as shown in Figs. 2 and 3, and the bolt 12 penetrates through in the direction perpendicular to the extended portions. In this case, the rear trailing mounting bracket may be tilted at a predetermined angle θ, for example, 24 ° so that the head side of the bolt 12 is located at a lower portion than the portion to be coupled to the nut 18 ( The extended portions of the 15 and 16 are also inclined to have an angle corresponding to the inclined angle of the bolt 12.

In addition, the rear trailing arm of the rear suspension module 11 is bent portion adjacent to the bush portion which is rotatably mounted to the rear trailing mounting brackets 15 and 16 via a bolt 12, such bending The site improves suspension performance.

Of course, the inner and outer rear trailing mounting brackets 15 and 16 are formed with bolt mounting holes through which the bolts 12 can be fitted.

The operation of the present invention configured as described above will be described.

First, as shown in FIG. 2, the rear trailing mounting bracket 15 fixedly installed to the rear floor side member 13 and the rear side seal inner panel 14 of the rear suspension module 11 and the bushing portion of the rear trailing arm. When the bolt 12 is to be mounted on the 16, the bolt 12 is inserted through the bolt mounting hole formed in the rear trailing mounting bracket 15 and 16, wherein the head of the bolt 12 is inserted. The part is located in the outward direction of the vehicle body, and the nut 18 engaged with the bolt 12 is fixed to the rear trailing mounting bracket 15 located in the inward direction of the vehicle body.

After the bolt 12 is inserted in this way, when the head of the bolt 12 located in the outward direction of the vehicle body is fastened to the nut 18 by using a tool such as an impactor 7, the bushing portion of the rear trailing arm is attached to the vehicle body. It is rotatably combined.

In this way, the head of the bolt 12 is located in the outward direction of the vehicle body, so that a work space using a tool such as the impactor 7 is provided widely, which improves the work efficiency as compared with the prior art.

In addition, since the nut 18 is fixed in the open space, while the nut 18 is detached from the rear trailing mounting bracket 15 during the operation of mounting the bolt 12, the nut ( Maintenance work for fixing 18) to the bracket 15 can be easily performed.

In particular, when the bush portion of the rear trailing arm is mounted between the rear trailing mounting brackets 15 and 16, the rear trailing mounting line in which the bush portion of the rear trailing arm is fixed between the brackets 15 and 16 is fixed. It is seated while being naturally centered on the seating portion 17a of the forcement 17, which allows the assembly position to be set accurately with respect to the bushing portion of the rear trailing arm so that the assembly work can be efficiently performed.

As described above, according to the assembling structure of the rear trailing arm of the automobile according to the present invention, when the bushing portion of the rear trailing arm is rotatably mounted to the vehicle body via a bracket, the head of the bolt is located outside the vehicle body. Since the working space is large, it has an excellent effect of improving the efficiency of the assembly work.

In addition, an arc-shaped seating portion is formed in the reinforcement fixedly installed between the brackets, so that the bushing portion of the rear trailing arm can be simply and quickly automatically centered at a predetermined position, so that the assembly work can be efficiently performed.

In addition, the nut fixed by welding to the bracket is installed in the open space so that it can be seen from the outside has an excellent effect that the repair work can be made quickly even when the nut falls from the bracket when the assembly work is performed.

Claims (3)

In the supporting structure of the rear trailing arm mounted to the vehicle body via a bolt, Inner rear trailing mounting brackets (15) which are fixed to the rear floor side member (13), the nut (18) is welded to the inner portion of the vehicle body, and the portion on which the rear trailing arm is mounted is inclined at an angle to the inside of the vehicle. )and, The outer rear trailing mounting bracket 16, which is fixed to the rear side seal inner panel 14 and which the rear trailing arm is mounted, is inclined at an angle to the inside of the vehicle so as to be parallel to the inner rear trailing mounting bracket 15. ) And, Fastening to the nut 18 such that the head is positioned on the outer rear trailing mounting bracket 16 so as to pass through the bush portion of the rear trailing arm located between the inner and outer rear trailing mounting brackets 15 and 16. Assembly structure of the rear trailing arm of a vehicle, characterized in that it comprises a bolt (12). 2. The rear trailing arm of claim 1, wherein a portion adjacent to the bush portion rotatably mounted to the inner and outer rear trailing mounting brackets (15) and (16) by means of bolts (12) is bent. Assembly structure of rear trailing arm of car to assume. The rear trailing system according to claim 1 or 2, having a '∩'-shaped cross section, disposed between and fixed between the inner and outer rear trailing mounting brackets (15) and (16), and rear trailing at the center of both lower end portions. And a rear trailing mounting reinforcement (17) having an arc-shaped seating portion (17a) that guides the bush portion of the arm to be automatically centered.

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