KR101209681B1 - Strength reinforcement structure of Tail gate side part - Google Patents

Strength reinforcement structure of Tail gate side part Download PDF

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Publication number
KR101209681B1
KR101209681B1 KR1020100061261A KR20100061261A KR101209681B1 KR 101209681 B1 KR101209681 B1 KR 101209681B1 KR 1020100061261 A KR1020100061261 A KR 1020100061261A KR 20100061261 A KR20100061261 A KR 20100061261A KR 101209681 B1 KR101209681 B1 KR 101209681B1
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South Korea
Prior art keywords
tail gate
panel
inner panel
reinforcement
quarter inner
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KR1020100061261A
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Korean (ko)
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KR20120000800A (en
Inventor
곽동혁
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기아자동차주식회사
현대자동차주식회사
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Priority to KR1020100061261A priority Critical patent/KR101209681B1/en
Publication of KR20120000800A publication Critical patent/KR20120000800A/en
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Publication of KR101209681B1 publication Critical patent/KR101209681B1/en

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  • Engineering & Computer Science (AREA)
  • Body Structure For Vehicles (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)

Abstract

The present invention relates to a rigid reinforcing structure of the tail gate side portion, and more particularly, to a rigid reinforcing structure for improving the fastening force by improving the coupling structure of the tail gate side portion of the vehicle.
To this end, the present invention comprises a side outer panel and a quarter inner panel forming the vehicle body rear side portion, and a filler reinforcement is located in the space between the side outer panel and the quarter inner panel,
The filler reinforcement has a center portion coupled to the bottom surface of the side outer panel 10, and an extension portion on one side of the center portion is coupled to the inner opening flange of the quarter inner panel and the outer opening flange of the side outer panel at the same time. The tip portion provides the rigid reinforcement structure of the tail gate side portion, which is coupled to the quarter inner panel on the other side.

Description

Strength reinforcement structure of Tail gate side part

The present invention relates to a rigid reinforcing structure of the tail gate side portion, and more particularly, to a rigid reinforcing structure for improving the fastening force by improving the coupling structure of the tail gate side portion of the vehicle.

Generally, the rear part of a vehicle may be divided into a notch back type and a hatch back type according to a body structure.

The notch back type vehicle is formed in a chin shape by bending the space of the rear window and the trunk lid, and is widely used in a sedan because of the large space of the upper occupant of the rear seat and the ample trunk space.

On the other hand, the hatchback type car has a tail gate that can be lifted up and down and installed at the rear end of the body.When loading a large amount of cargo, the rear seat can be stored to obtain a cargo compartment. It is used for a purpose vehicle.

Unlike the hatch back type car, the hatch back type car is a package that closes the rear seat and the trunk to expand the cargo compartment and increase the cargo storage efficiency by folding the rear seat. The tray member is not installed.

Therefore, the body rigidity of the rear of the vehicle is weaker than that of a normal Notch Back type vehicle, and thus, the tail gate and the surrounding frame of the tail gate are required to have a high rigidity structure for the passenger safety in the event of a vehicle crash.

In particular, the tail gate side part of the hatchback vehicle is a main factor part related to securing body rigidity, and the annular structure of the opening part corresponding to the upper end part of the tail gate side part has a great influence.

Hereinafter, the reinforcing structure of the tail gate side part of a conventional hatchback type automobile will be described with reference to the accompanying drawings.

1 is a perspective view showing a vehicle body of a general hatchback type automobile from the rear side, and FIG. 2 is a cross-sectional view of the reinforcing structure of the tail gate side part according to the related art as viewed from A-A of FIG. 1.

As shown in the figure, side portions S are provided at both rear sides of the vehicle body provided with the tail gate, and the side portions S are provided with the side outer panel 10, the quarter inner panel 20, and the filler reinforcement ( 30), and although not shown, the roof panel and the rear roof rail are configured together.

The tail gate side part S is formed at the top of the side part S as the side outer panel 10 and the quarter inner panel 20 are loaded in the longitudinal direction when the body body (body in white) is assembled. Except for the opening part, there is no coupling section.

Looking at the structure of the tail gate opening portion according to the prior art, the filler reinforcing material 30 for securing rigidity is bonded to the quarter inner panel 20 loaded in the longitudinal direction along with the side outer panel 10 when the vehicle body is assembled, the side outer A loading gap of about 3 mm is provided between the panel 10 and the filler reinforcement 30, and the joining of the quarter inner panel 20 and the filler reinforcement 30 is made by general spot welding.

The reinforcing structure of the conventional tail gate opening portion is the filler reinforcement 30 is coupled to the quarter inner panel 20 only and not coupled to the side outer panel 10, and between the parlor reinforcement 30 and the side outer panel 10. Due to the securing of the loading gap, the cross-sectional area of the box-shaped closed end surface between the quarter inner panel 20 and the filler reinforcement 30 becomes relatively small, resulting in a lack of coupling force.

Accordingly, the torsional rigidity that influences the ride comfort of the vehicle is weak, and the displacement of the tail gate opening is excessively generated due to the road load transmitted to the upper end of the vehicle body through the tail gate during driving, thereby gradually breaking the panels of the tail gate side part. When the door is opened, noise generated due to vibration of the side outer panel 10 may be introduced into the vehicle interior.

FIG. 3 is a view illustrating a stiffness measurement result of a body tail gate part according to the prior art, and the stiffness level of the upper corner part of the tail gate may be confirmed through an analysis of the stiffness measurement result of FIG. 3.

The present invention has been invented to solve the above problems, the tail gate to combine the filler reinforcement coupled with the quarter inner panel of the tail gate side portion with the side outer panel to improve the cross-section fastening and to reinforce the body rigidity The object is to provide a rigid reinforcement structure of the side portion.

In order to achieve the above object, the present invention comprises a side outer panel and a quarter inner panel forming a vehicle body rear side portion, and a filler reinforcement is located in the space between the side outer panel and the quarter inner panel,

The filler reinforcement has a center portion coupled to the bottom surface of the side outer panel 10, and an extension portion on one side of the center portion is coupled to the inner opening flange of the quarter inner panel and the outer opening flange of the side outer panel at the same time. The tip portion provides the rigid reinforcement structure of the tail gate side portion, which is coupled to the quarter inner panel on the other side.

Preferably, the quarter inner panel is characterized in that a welding hole for inserting a tool for the coupling operation is formed.

Rigid reinforcement structure of the tail gate side portion according to the present invention can achieve the effect of increasing the torsional rigidity of the tail gate side portion by reinforcing the cross-sectional fastening force by simultaneously coupling to the side outer panel and the quarter inner panel when mounting the filler reinforcement.

In addition, the present invention can be applied to the tail gate side portion as a whole by appropriately adjusting the size of the filler reinforcement and the number of welding holes, it is possible to secure the overall rigidity of the tail gate side portion and reinforce the vehicle body rigidity.

In addition, the present invention can improve the welding workability of the operator when assembling the vehicle body by forming a welding hole for performing a welding operation by inserting a welding gun when the vehicle body assembly on the quarter inner panel.

1 is a perspective view showing a body of a general hatchback type automobile from the rear side.
FIG. 2 is a cross-sectional view of the reinforcing structure of the tail gate side part according to the related art as viewed from AA of FIG. 1.
3 is a view showing a stiffness measurement result of the vehicle body tail gate portion according to the prior art.
4 is a cross-sectional view showing the rigid reinforcement structure of the tail gate side portion according to the present invention.
5 is a partial perspective view showing the rigid reinforcement structure of the tail gate side portion according to the present invention.
Figure 6 is a table showing the results of measuring the torsional rigidity, skeletal rigidity and durability improvement level applied to the hatchback type vehicle to which the reinforcing structure according to the present invention is applied.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. In the description, overlapping descriptions of the same parts as the related art may be omitted.

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

In a vehicle having a tail gate that is installed to be rotatable up and down in the rear portion of the vehicle body and is responsible for opening and closing, both sides of the rear portion, that is, the tail gate side portion S of the vehicle body, have side portions at the rear of the vehicle body as shown in FIG. 4. The side outer panel 10 and the quarter inner panel 20 for forming are comprised, and the filler reinforcement 30 etc. are provided between them for rigid reinforcement.

The upper coupling structure of the tail gate side part S as shown in FIG. 4 is configured such that the side outer panel 10, the quarter inner panel 20, and the filler reinforcement 30 form a box-shaped closed end surface, respectively.

That is, in the present invention, the filler reinforcing material 30 is welded to the quarter inner panel 20 at both sides (bonding points B and D) and welded to the side outer panel 10 therebetween (bonding point C).

The filler reinforcing material 30 is formed in a single panel shape in which the tip portion 33 and the extension portion 35 are formed on both sides of the center portion 31, and the side outer panel 10 and the quarter inner panel 20 are formed. It is installed with the structure inserted in the space between them.

In the present invention, the filler reinforcement 30 is properly bent to be coupled to the quarter inner panel 20 at the front end portion 33, as well as to the side outer panel 10 and the center portion 31, and thus the side outer panel 10. In contact with the bottom surface of one side, the center portion 31 in contact with the side outer panel 10 is coupled to one side of the side outer panel 10 by a general spot welding.

In addition, the quarter inner panel 20 is provided with a welding hole 23 for inserting a welding means such as a welding gun for welding the side outer panel 10 and the filler reinforcement 30 as described above.

In this case, the stiffness around the welding hole 23 may be relatively reduced by forming the welding hole 23 in the quarter inner panel 20, but the filler reinforcement 30 supports the edge of the welding hole 23. .

In the present invention, the filler reinforcement 30 is not only bent into a shape for engagement with the side outer panel 10 but also has one end portion of an opening flange 21 (hereinafter, referred to as an inner opening flange) of the quarter inner panel 20. It is formed to extend.

The extension part 35 of the filler reinforcement 30 thus extended is positioned between the opening flange 11 (hereinafter, referred to as the outer opening flange) of the side outer panel 10 and the inner opening flange 21, and is a general spot. The outer opening flange 11 and the inner opening flange 21 are joined at the same time by welding.

In the present invention, the quarter inner panel 20 and the side outer panel 10 are not deformed in shape when combined with the filler reinforcement 30 as described above.

As described above, the reinforcing structure of the upper part of the tail gate side part S according to the present invention is a filler reinforcing material 30 positioned between the side outer panel 10 and the quarter inner panel 20 as the two panels are simultaneously coupled to each other. The cross-section fastening force is improved and the body stiffness is reinforced to obtain the effect of increasing the overall torsional rigidity.

In addition, the present invention can also secure the coupling rigidity by welding the outer opening flange 11, the inner opening flange 21 and the extension portion 35 of the filler reinforcing material 30, etc. at the quarter inner panel 20 side. .

According to the present invention, the cross-sections (cross-sections formed as the side outer panel 10, the quarter inner panel 20, and the filler reinforcement 30 are combined) are formed on the tail gate side part S. As a whole, a box-shaped closed section is formed and mutually supported to obtain an effect of reinforcing cross-sectional rigidity.

For example, the side outer panel 10 and the filler reinforcement 30 are coupled to the extension portion 35 and the center portion 31 of the filler reinforcement 30 at the upper end of the tail gate side part S (FIG. 4). And the box-shaped closed end surface E on the left side of FIG. 4 due to the junction of B and C of FIG. 5, the quarter inner panel 20 and the filler reinforcement 30 at the tip 33 and the extension 35. The box-shaped closed end face F in the center of FIG. 4 due to the coupling (B and D junction portions of FIGS. 4 and 5) and the side outer panel 10 and the filler reinforcement 30 are coupled to the center portion 31 ( 4 and 5) and the box-shaped closed end on the right side of FIG. 4 due to the coupling of the quarter inner panel 20 and the filler reinforcement 30 at the distal end 33 (D junction of FIGS. 4 and 5). Surface G is formed.

In addition, the predetermined closed end surface due to the coupling (B, C, D junction portion) in the extension portion 35, the center portion 31 and the tip portion 33 of the filler reinforcement 30, and the tail gate side portion (S) The entire cross section of the upper end forms a predetermined closed cross section.

In addition, the rigid reinforcement structure of the tail gate side part S according to the present invention adjusts the size of the filler reinforcing material 30 and the number of welding holes, and so on, as well as the top of the tail gate side part S, as well as the tail gate side part S. Applicable to all parts of).

On the other hand, Figure 6 is a table showing the results of measuring the torsional stiffness, skeletal stiffness and endurance improvement by applying the rigid reinforcement structure of the tail gate side portion (S) according to the present invention to a hatchback type vehicle.

As shown in FIG. 6, it can be seen that the stiffness torsional strength of the tail gate side part S and the skeletal stiffness and the durability improvement level of the upper corner of the tail gate are improved to a target value or more.

Figure 112010041509576-pat00001

Table 1 is a numerical value showing the effect of increasing the torsional torsion through the application of the reinforcing structure according to the present invention, the filler reinforcing material 30 is welded to the bottom of the side outer panel 10 and the inner opening flange 21 The coupling of the outer opening flange 11 to the extension 35 of the filler reinforcement 30 shows that the effect of increasing the torsional rigidity is superior to increasing the thickness of the quarter inner panel 20.

Thus, it can be seen that the general technique of increasing the rigidity torsion while increasing the thickness of the quarter inner panel 20 has a slight effect of increasing the torsional rigidity as compared with the technique according to the present invention.

That is, while the torsional stiffness 0.64 is increased when the present invention is applied, the thickness increase technique of the existing quarter inner panel 20 is 0.24 and 0.48 to increase the torsional rigidity does not reach the effect of the present invention.

Accordingly, the present invention is expected to reduce the weight of about 1 kg per vehicle compared to the conventional technology for increasing the thickness of the quarter inner panel 20, thereby reducing the cost.

In the present invention, when the filler reinforcement 30 is formed between the side outer panel 10 and the quarter inner panel 20, the filler reinforcement 30 is simultaneously coupled with the two panels 10 and 20 (B, C, D). Welding coupling portion) By forming a plurality of closed cross-sections to strengthen the cross-sectional fastening force to increase the torsional rigidity of the tail gate side portion (S).

In addition, since the center portion 31 of the filler reinforcement 30 is coupled to form a closed cross section in a space spaced between the side outer panel 10 and the quarter inner panel 20, the side outer panel 10 when the vehicle door is opened. The noise generated by the vibration of the) can be prevented from entering the vehicle interior, and by inserting a welding gun when assembling the vehicle body on the quarter inner panel 20 to form a welding hole 23 for performing a welding operation When assembling the vehicle body it is possible to improve the welding workability of the operator.

While the invention has been shown and described with respect to preferred embodiments thereof, the invention is not limited to these embodiments, and various modifications may be made by those of ordinary skill in the art to which the invention pertains. It includes all forms of embodiments.

10: side outer panel
11: outer opening flange
20: quarter inner panel
21: inner opening flange
23: welding hole
30: filler reinforcement
31 center portion of filler reinforcement
33: tip of filler reinforcement
35 extension part of filler reinforcement

Claims (2)

A side outer panel 10 and a quarter inner panel 20 forming a vehicle rear side portion, and a filler reinforcement 30 positioned in a space between the side outer panel 10 and the quarter inner panel 20,
The filler reinforcement 30 has a center portion 31 coupled to the bottom surface of the side outer panel 10, and an extension portion 35 on one side of the quarter reinforcement panel 20 is formed around the center portion 31. It is coupled to the inner opening flange 21 and the outer opening flange 11 of the side outer panel 10 at the same time, the other end portion 33 is coupled to the quarter inner panel 20 on the other side,
At the upper end of the tail gate side part, the box-shaped closed end face E due to the coupling of the side outer panel and the filler reinforcement at the extension part and the center part of the filler reinforcement and the quarter inner panel and the filler reinforcement at the tip and extension part of the filler reinforcement part are combined. Box-shaped closed end face (F) due to the combination of the side outer panel and the filler reinforcement at the center of the filler reinforcement and the box-shaped closed end face (G) formed by the combination of the quarter inner panel and the filler reinforcement at the tip of the filler reinforcement. The rigid reinforcement structure of the tail gate side part characterized by the above-mentioned.
The method according to claim 1,
The quarter inner panel 20 is a rigid reinforcing structure of the tail gate side portion, characterized in that the welding hole 23 for inserting a tool for the coupling operation is formed.
KR1020100061261A 2010-06-28 2010-06-28 Strength reinforcement structure of Tail gate side part KR101209681B1 (en)

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KR1020100061261A KR101209681B1 (en) 2010-06-28 2010-06-28 Strength reinforcement structure of Tail gate side part

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Publication number Priority date Publication date Assignee Title
KR102080885B1 (en) * 2018-01-15 2020-02-24 지엠 글로벌 테크놀러지 오퍼레이션스 엘엘씨 Power lift gate structure comprising a pocket-like rigid reinforcing member

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003127900A (en) * 2001-10-19 2003-05-08 Suzuki Motor Corp Rear pillar reinforcing structure
JP2008087609A (en) * 2006-10-02 2008-04-17 Suzuki Motor Corp Reinforcement structure of rear pillar upper part for vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003127900A (en) * 2001-10-19 2003-05-08 Suzuki Motor Corp Rear pillar reinforcing structure
JP2008087609A (en) * 2006-10-02 2008-04-17 Suzuki Motor Corp Reinforcement structure of rear pillar upper part for vehicle

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