KR20110055315A - Assembling structure of door for vehicles - Google Patents

Abstract

PURPOSE: A coupling structure of a lower portion of a door for a vehicle is provided to suppress assembly error between members since a beam pipe is installed between two die casting forms of the beam pipe. CONSTITUTION: A coupling structure of a lower portion of a door for a vehicle comprises an integrated side panel(110), a die casting form(120), and a beam pipe(130). The die casting form is mounted inside the integrated side panel. The beam pipe is mounted between the two die casting forms. One end of the die casting form is overlapped with both ends of the beam pipe. The lower flange of the beam pipe is coupled with the integrated side panel. The top flange and the bottom flange of the die casting form are overlapped on the upper flange and the lower flange. The body of the die casting form is overlapped on the inner side of the beam pipe.

Description

Assembling structure of door for vehicles}

The present invention relates to a vehicle door lower coupling structure, and more particularly to a coupling structure of the components that are configured under the door inner panel.

In general, a door for a vehicle is composed of a door inner panel configured inside the door and a door outer panel bent to cover the door inner panel in close contact with a lower end of the door inner panel, and the exterior of the door outer panel for appearance. The door garnish is configured on the side.

1 is a schematic view showing the structure of a conventional vehicle door, Figures 2a and 2b is a partial view showing a lower coupling structure of a conventional vehicle door, Figure 3 is a cross-sectional view seen from A-A of FIG.

4 is a schematic view showing a misalignment state of a conventional vehicle door, and FIG. 5 is a photograph showing an incomplete matching state between members (parts) of the conventional vehicle door.

As shown in FIG. 1, a door inner panel 10 of a vehicle includes two side panels 13 disposed on side surfaces, a die cast product 15 disposed inside the side panels 13, and The first lower panel 11 and the second lower panel 12 disposed between the die-cast articles 15 are mounted, and a beam pipe 17 for mounting a shock during side impact is mounted at the upper end. .

2A and 2B, the conventional vehicle door is mounted so that the first lower panel 11 overlaps with the die cast product 15, and then the door inner panel 10 is inverted, and then the second lower panel 12 is mounted. ), The first lower panel 11, the second lower panel 12, and the die-cast product 15 having a box cross section (or closed loop cross section) as shown in FIG. To prevent separation or separation between members during a collision.

 As described above, the first lower panel 11 and the second lower panel 12 coupled to overlap the ends of the die-cast product 15 are disposed at the lower part of the door inner panel 10 so as to have a box cross section. Due to the configuration of the piece (PIECE), assembling scattering occurs between each member formed in the lower portion of the door inner panel 10, as shown in Figures 2a and 2b, the coupling point using a self-piercing rivet (SELF PIERCING RIVET) There is a problem of becoming excessive.

Accordingly, when the door outer panel is hemmed and fixed to the door inner panel, the door outer panel may not be closely contacted with the lower end of the door inner panel 10, resulting in a problem of bending and lifting, and a sealing member as shown in FIG. 4. As a result of poor alignment between the two, assembly failure and lifting occurs, which causes moisture to penetrate from the outside, causing watertightness problems, and wind quietness in the vehicle's interior due to wind penetration. There is.

In addition, as shown in FIG. 5, when excessive gaps are generated between the second lower panel 12, the die cast product 15, and the side panel 13, the internal structure is exposed and the appearance is degraded. Contamination may occur.

Also, as shown in FIGS. 2A and 2B, the first lower panel 11 is mounted so as to overlap with the die-cast product 15, and then the door inner panel 10 is turned upside down to assemble the second lower panel 12. Due to this, there is a problem of excessive assembly labor.

The present invention has been invented to solve the above problems, the existing side panel and two lower panels formed by forming one piece (ONE PEICE), a beam pipe having a closed loop cross-section between two die-cast products It is an object of the present invention to provide a vehicle door lower coupling structure which suppresses assembly dispersion between members.

In order to achieve the above object, the present invention provides an integrated side panel, two die casts mounted at an inner position of the integrated side panel, and a beam pipe mounted between the two die casts is assembled to the door inner panel. Is composed,

One end of two die-cast articles overlaps with both ends of the beam pipe and is coupled to each other, and the lower flange of the beam pipe is coupled to the integrated side panel to provide a vehicle door lower coupling structure.

The vehicle door lower coupling structure according to the present invention can suppress the assembly scattering between the members mounted on the door inner panel, there is an effect of suppressing the lifting of the door outer panel and the misalignment of the sealing member between members.

In addition, the present invention is reduced the number of assembly between the members installed in the lower portion of the door inner panel, the coupling point using the self-piercing rivets, bolts, etc. can be reduced to less than half to obtain the effect of reducing the manufacturing cost, the member There is an effect that the matching line is simplified to simplify the joint line.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, as used in the singular and the plural unless the context clearly indicates otherwise.

There may be a plurality of embodiments of the present invention, and overlapping descriptions of the same parts as in the prior art may be omitted.

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

Figure 6 is a schematic configuration diagram showing a vehicle door lower coupling structure according to the present invention, Figure 7 is a coupling diagram showing the position where the fastening member is mounted by expanding the main portion of Figure 6, Figure 8 is a present invention It is a cross-sectional view showing a vehicle door lower coupling structure according.

9 is an enlarged view illustrating an alignment state between members of a vehicle door according to the present invention.

In the vehicle door lower coupling structure according to the present invention, the lower part of the door inner panel has an integrated side panel 110 stacked on the edge of the door inner panel, and the two side panel 110 arranged inside and mounted therein. The die-cast article 120 and the beam pipe 130 which are arrange | positioned and mounted so that it overlaps between this die-cast article 120 are assembled.

The integrated side panel 110 is formed to cover the side edge and the bottom edge of the door inner panel.

In the present invention, two die-cast articles 120 are spaced apart from both sides at an inner position of the integrated side panel 110 stacked on the door inner panel, and each die-cast article 120 includes the integrated side panel ( In the state overlapped with the inner edge of the 110, for example, by a welding or the like.

In addition, a beam pipe 130 having a closed loop cross section is disposed between the two die cast articles 120, and both ends of the beam pipe 130 are respectively end portions of the die cast articles 120 (door inner panel). And overlapped ends).

In the exemplary embodiment of the present invention, the die cast product 120 has a lower end portion having a substantially 'b' shape, and each end portion thereof faces each other while being disposed inwardly of the integrated side panel 110.

As shown in FIG. 7, a portion where the die cast product 120 and the beam pipe 130 overlap with each other is combined into four places of riveting and two places of bolting using fastening members such as self-piercing rivets and bolts. The overlapping part of the side panel 110 and the beam pipe 130 is coupled to the seven places.

On the other hand, the die-cast article 120 may be divided into a body 123 between the upper flange 121 and the lower flange 122, and the upper flange 121 and the lower flange 122 at the edge.

Referring to FIG. 8, in the vehicle door (or door inner panel) according to the present invention, one end of the body 123 is inserted into both ends of the beam pipe 130 in two die-cast articles 120. The upper flange 121 and the lower flange 122 of the die cast product 120 are fastened in a state overlapped with the inner surface of the beam pipe 130, and the upper flange 131 and the lower flange 132 of the beam pipe 130 are fixed. Are overlaid on top of each other.

That is, when the die cast product 120 and the beam pipe 130 are coupled, the upper flange 121 and the lower flange 122 of the die cast product 120 are the upper flange 131 of the beam pipe 130. ) And the lower flange 132, respectively, overlapping, the body 123 of the die cast product 120 is combined in a staggered structure, such as overlapping on the inner surface of the beam pipe 130 to obtain an effect that the tightening force is further increased. Can be.

In addition, the lower flange 132 of the beam pipe 130 is fastened by riveting at a portion overlapping with the integrated side panel 110.

As illustrated in FIG. 8, the beam pipe 130 includes the upper flange 131 extending upward and the lower flange 132 extending downward.

In the present invention, as described above, the beam pipe 130 made of the extruded material is a closed loop that can prevent separation and separation between members (between the die cast product 120 and the beam pipe 130) during side collision of the vehicle. It is made to have a cross section (or box cross section), the body 123 portion of the die-cast article 120 in contact with the inner surface of the beam pipe 130 is coupled through a fastening member such as a bolt.

In the present invention, the integrated side panel 110 is performed by integrating the roles of the existing side panel (see FIG. 1 to 13) and the first lower panel (see FIG. When the door outer panel is hemmed, the lower end of the door inner panel and the door outer panel may be in close contact with each other so that the lifting phenomenon does not occur.

In addition, as the beam pipe 130 coupled to overlap the end of the die-cast product 120 has a closed loop cross section, a process for coupling the existing first lower panel 11 and the second lower panel 12, etc. This omission of the assembly maneuver is reduced, it is possible to prevent the separation from the vehicle door during the side collision of the vehicle to ensure the shock-absorbing performance can improve the stability of the vehicle.

Accordingly, in the vehicle door according to the present invention, the assembly spread between members formed at the lower portion of the door inner panel is suppressed, and as shown in FIG. 9, alignment for matching between members of the die cast product 120 and the beam pipe 130, etc. Due to the improved condition, the sealing process may be easily performed.

In addition, in the present invention, since the process of inverting the existing door inner panel when the beam pipe 130 is assembled (see FIG. 2A) is omitted, the beam pipe 130 may be assembled to the door inner panel in one step. Likewise, as the coupling points such as riveting or bolting are reduced to less than half, the manufacturing cost can be reduced.

Although the present invention has been illustrated and described with respect to specific preferred embodiments, the invention is not limited to these embodiments, and the invention is claimed in the claims by one of ordinary skill in the art to which the invention pertains. It includes all embodiments of the various forms that can be carried out without departing from the spirit of the invention.

1 is a schematic diagram showing the structure of a conventional vehicle door

2a and 2b is a partial view showing a lower coupling structure of a conventional vehicle door

3 is a cross-sectional view seen from A-A of FIG.

Figure 4 is a schematic diagram showing a misalignment state of a conventional vehicle door

5 is a photograph showing an incomplete matching state between members (parts) of a conventional vehicle door.

6 is a schematic diagram illustrating a vehicle door lower coupling structure according to the present invention;

7 is an enlarged view illustrating a position where the fastening member is mounted by expanding the main portion of FIG. 6;

8 is a cross-sectional view showing a vehicle door lower coupling structure according to the present invention.

Figure 9 is an enlarged view showing the alignment state between the members of the vehicle door according to the invention

<Description of the symbols for the main parts of the drawings>

110: integrated side panel

120: die-cast

121: top flange

122: bottom flange

123: body

130: beam pipe

131: upper flange 132: lower flange

Claims (4)

The integrated side panel 110, two die-cast articles 120 mounted at an inner position of the integrated side panel 110, and a beam pipe 130 mounted between the two die cast articles 120 are provided. The door is assembled to the inner panel, One end of each of the two die-cast articles 120 overlaps and is coupled to both ends of the beam pipe 130, and the lower flange 132 of the beam pipe 130 is fastened to the integrated side panel 110. Vehicle door lower coupling structure, characterized in that. The method according to claim 1, When the die cast product 120 and the beam pipe 130 are coupled to each other, the upper flange 121 and the lower flange 122 of the die cast product 120 are respectively the upper flange 131 of the beam pipe 130. And a superimposed on the lower flange (132), the body (123) of the die cast product 120 is to be superimposed on the inner surface of the beam pipe (130). The method according to claim 1, The integrated side panel 110, the vehicle door lower coupling structure, characterized in that formed to cover the side edge and the bottom edge of the door inner panel. The method according to claim 1, Vehicle beam lower coupling structure, characterized in that the beam pipe 130 is formed to have a closed loop cross section.

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