JPS6119932Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a door structure for a vehicle, and particularly to an improvement in the door structure that improves the strength of the hinge side end of the door.

This type of conventional vehicle door structure includes, for example:
NISSAN Service Bulletin, November 1970, No. 346
There are the ones shown on page 191 of No. Sunny, and the ones shown in Figures 1 to 3. In the conventional structure, a vehicle body 1 is placed inside a door 2 assembled with a door inner panel 3 and a door outer panel 4.
A door guard bar 5 is attached along the longitudinal direction of the door 2 to absorb impact energy in the event of a side collision to ensure the safety of occupants. An aus 6 was attached to maintain the strength of the hinge side end 15 when the door 2 is opened.

As shown in FIG.
The flange portion 7 is made of a substantially rectangular steel plate having a bent portion that substantially matches the cross-sectional shape of the hinge side end portion 15 of the flange portion 7.
A notch 9 is provided in order to avoid overlapping with the tip 8 of the door guard bar 5. Therefore,
At the hinge side end 15 inside the door 2, as shown in FIGS. 1 and 2, the tip 8 of the door guard bar 5 stretched along the approximate center of the door 2 touches the tip of the door inner panel 3. It is welded and fixed to the step part 10, and one end surface 1 of the door inner panel 3
The proximal end 12 of the hinge reinforcement 6 is welded and fixed to the hinge reinforcement 6, and the remaining notches 13 and 13' of the notch 9 provided in the hinge reinforcement 6 to avoid overlapping with the door guard bar 5 are fixed to the third As shown in the figure, similar to the installation of the door guard bar 5, it is welded and fixed to the tip end step 10 of the door inner panel 3, and the attachment portion of the door hinge 14 attached to the door inner panel 3 is reinforced in the vicinity thereof.

However, in the above-mentioned conventional vehicle door structure, the hinge reinforcement 6 is formed with a notch 9 to avoid overlapping with the door guard bar 5, so when the door 2 is opened, the notch 9 is formed in the hinge reinforcement 6. When a downward load is applied to the end side 16, the fourth
As shown by the imaginary line in the figure, the hinge reinforcement 6 is easily deformed around the notch 9, which causes the rear end side 16 of the door 2 to lower and cause interference with the vehicle body 1. There were problems such as the gap between the vehicle body 1 and the door 2 being not maintained constant when closed. On the other hand, measures such as increasing the thickness of the hinge reinforcement 6 have been taken to prevent these problems, but in such cases it is difficult to reduce vehicle weight and cost. There was a problem with that.

The present invention has been developed based on the above-mentioned viewpoints, and includes opening a plurality of holes in the flange portion of the hinge reinforcement, and attaching welding embossing that fits into the holes to the door inner panel and the door guard bar. A vehicle door structure is provided in which the strength of the hinge side end of the door is ensured by forming the emboss on one of the sides and welding the emboss to the other abutment surface holding the hinge reinforcement. This is what we provide.

The present invention will be described in detail below based on embodiments shown in the accompanying drawings.

5 to 7 show an embodiment of a vehicle door structure according to the present invention, in which a vehicle body 1 is installed inside a door 2 assembled with a door inner panel 3 and a door outer panel 4. A door guard bar 5 is attached along the front-rear direction, and the tip 8 of the door guard bar 5 and the flange 7 of the hinge reinforcement 6 are overlapped at the hinge side end 15 of the door 2, and the door inner It is fixed by welding to the tip step portion 10 of the panel 3.

This hinge reinforcement 6 is connected to the hinge side end 1 of the door inner panel 3, as shown in FIG.
It is made of a substantially rectangular steel plate having a bent part that substantially matches the cross-sectional shape of 5, and the flange part 7 on one side has a
A plurality of holes 17 are opened along the vertical direction of the central portion.

Further, the tip portion 8 of the door guard bar 5 that overlaps with the flange portion 7 has a hole 1 formed in the hinge reinforcement 6, as shown in FIGS. 6 and 7.
An embossing 18 that fits into the hole 17 is provided at a position corresponding to 7. This embossment 18 is formed to protrude by approximately the thickness of the hinge reinforcement 6, and therefore, the outer surface of the embossment 18 is approximately flush with the contact surface of the door inner panel 3 of the hinge reinforcement 6. become.

Therefore, in the case of the hinge side end 15 of the door 2, the base end 12 of the hinge reinforcement 6 is welded and fixed to the general surface 11 of the door inner panel 3, as shown in FIGS. At the same time, the tip side flange portion 7 is in contact with the tip step portion 10 of the door inner panel 3, and the upper and lower portions of the flange portion 7 are welded and fixed to the tip step portion 10. Also, the tip portion 8 of the door guard bar 5 overlaps with the upper surface of the center portion of the flange portion 7 of the hinge reinforcement 6.
are the flange portions 7 to which each embossing 18 corresponds, respectively.
The emboss 18 is fitted into the hole 17 of the door inner panel 3, and the emboss 18 and the tip end step 10 of the door inner panel 3 are welded and fixed with the hinge reinforcement 6 sandwiched therebetween. Therefore, the flange portion 7 of the hinge reinforcement 6 is fixed to the door inner panel 3 along the vertical direction of the door 2, so that the rigidity of the hinge side end portion 15 of the door 2 can be increased. . That is, when the door 2 is opened, a downward load is applied to the rear end side 16 of the door 2, and complex stresses such as bending, twisting, and shearing are generated in the hinge reinforcement 6, but the entire flange portion 7 is fixed. As a result, the hinge side end 15 of the door 2 can sufficiently support the load of the door 2. In particular, the center part of the hinge reinforcement 6 is sandwiched between the door inner panel 3 and the door guard bar 5, so the rigidity of the center part increases and the hinge reinforcement 6 deforms. It has a difficult structure.

FIG. 9 shows another embodiment of the vehicle door structure according to the present invention, in which the central part of the hinge reinforcement 6 that overlaps with the tip 8 of the door guard bar 5 has a structure similar to that of the embodiment described above. Similarly, a plurality of holes 17 are opened in the vertical direction, but the embossment 18 that fits into the hole 17 is different from the above embodiment.
Provided on the door inner panel 3 side, this emboss 1
8 and the tip 8 of the door guard bar 5 formed into a planar shape are welded and fixed.

As explained above, according to the vehicle door structure according to the present invention, a plurality of holes are formed approximately in the center of the flange portion of the hinge reinforcement attached to the hinge side end of the door, and the holes are An emboss to be fitted is formed on either the door inner panel or the door guard bar, and the door inner panel and the door guard bar are welded and fixed via this emboss, so that the entire flange part of the hinge reinforcement is fixed to the door inner panel. The structure increases the rigidity of the hinge reinforcement itself,
The strength of the hinge side end of the door can be ensured. Furthermore, since the thickness of the hinge reinforcement can be reduced compared to conventional door structures, it is possible to reduce vehicle weight and cost.

[Brief explanation of the drawing]

Fig. 1 is a side view of a vehicle body showing an example of a conventional vehicle door structure, Fig. 2 is a sectional view taken along the line - - in Fig. 1, Fig. 3 is a sectional view taken along the - line in Fig. 1, and Fig. 4 is a sectional view taken along the - line in Fig. 1. FIG. 5 is a side view of a vehicle body showing an embodiment of the vehicle door structure according to the present invention; FIG. 6 is a sectional view taken along the line in FIG. 5;
The figures are a cross-sectional view taken along the line in FIG. 6, FIG. 8 is a perspective view showing the hinge reinforcement of the present invention, and FIG. 9 is a corresponding cross-sectional view taken along the line in FIG. 5, showing another embodiment of the present invention. be. 2...Door, 3...Door inner panel, 5...
...Door guard bar, 6...Hinge reinforcement, 7...Flange part, 8...Tip part, 15...
Hinge side end, 17...hole, 18...emboss.

Claims (1)

[Scope of utility model registration request] A vehicle in which a hinge reinforcement 6 is provided at a hinge side end 15 in a door 2 having a door guard bar 5, and a flange 7 of the hinge reinforcement 6 and a tip 8 of the door guard bar 5 are fixed to a door inner panel 3. In the door structure, a plurality of holes 17 are formed in the flange portion 7 of the hinge reinforcement 6.
At the same time, an embossment 18 is formed at a position corresponding to the hole 17 on either the door inner panel 3 that comes into contact with the flange portion 7 or the tip 8 of the door guard bar 5, and the embossment 18 fitted in the hole 17 A vehicle door structure characterized in that a door inner panel 3 and a tip 8 of a door guard bar 5 are welded and fixed via a door guard bar 5.