Design of backdoor

Back door

Back door is part of the back side of the vehicle normally called as ‘dicky’ .Back gate it parts of the rear side of the vehicle where luggage it can be stored with particular limit of capacity as per the vehicle configuration .

Design consideration of back gate ;

1 Outer panel upper side

2 outer panel lower side

3 Back gate inner panel .

4 hinge reinforcement

5 gas stay reinforcement

6 wiper motor reinforcement

7 latch and stricker reinforcement

Outer panel upper side :

In outer panel first check the surface quality all the edges of the surface is should be tangentially align if any sharp surface or irregularity found in surface then it required to rework on the surface .The outer panel upper side offset the surface 2.65mm downward direction then make curve on face command to make 7mm clearance from the outer side of panel.

Then it trim it off the outer most edge to get the hemming process.

At the corner of the panel it provide the relief in order reduce the stress concentration while hemming . as mentioned below

Outer Panel lower side .

In outer panel lower side it will offset the surface 2.65 mm downward direction . then it get trim off the outer surface with curve on surface command and make arc length upto 7 mm. with the help of law extension command it get trim the upper surface of the panel .later it get mirror and sew the two panel and then thicken the surface upto 0.75mm

Back gate Inner panel .

Back gate inner panel offset the surface of outer panel upper 8mm . inner panel which give the support to the outer panel which is attatched to inner flange mastic surface .

In inner panel has attatched with hinge reinforcement , gas stay reinforcement , wiper motor reinforcement and hinge reinforcement , .the inner panel osurface has emboss creation to provide the strength to the surface .

Hinge reinforcement .

Hinge reinforcement first extract the surface from the bottom the surface of the inner panel and then trim it off in rectangle section . as mention below figure in both LH and RH SIDE .

Gas stay reinforcement .

Gas stay reinforcement extract the surface of the inner panel and trim the surface in rectangle section .gas reinforcement to give the support to the gas stay mounting to open and closed the smoothly and withstand the load of the back gate .

Wiper motor reinforcement .

In wiper motor reinforcement to give the support the wiper motor emboss support to increase the strength and durability of the sheet metal .

Latch and striker reinforcement .

In latch and striker creation to take the center point of the both the side of the hinge mounting hole and create a center point and make a center plane.

W.r.t to center plane draw the circle which is intersecting the line of the lower panel flange with center axis and make a tangent line perpendicular to the circle end surface . Create a curve on surface command to make a offset surface with 20mm distance which is intersect the lower flange surface as mentioned below fig.

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CONCLUSION :

Back door design has done a follow the all design parameter as per the given data.