108 lines
2.7 KiB
OpenSCAD
108 lines
2.7 KiB
OpenSCAD
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/***************************************************************
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Parameterized Battery pack with electrical connections
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(c) 2010 Juan Gonzalez-Gomez (Obijuan) juan@iearobotics.com
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This design is derived from the Battery comparment generator
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(c) Nikolaus Gradwohl (guru (at) local-guru.net)
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http://www.thingiverse.com/thing:5051
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Other contributors:
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* Chris Thompson (http://eagleapex.com/): Connection in series along the case
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-----------------------------------------------------------
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The nuts (two per battery) are embedded into the battery pack.
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The screws (two per battery) are inserted from the outside and
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touch the batteries.
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-----------------------------------------------------------
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GPL LICENCE
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****************************************************************/
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//-- Battery sizes
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AA = [ 14.5, 50.5 ];
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AAA = [ 10.5,44.5 ];
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C = [ 26.2, 50 ];
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D = [ 34.2, 61.5 ];
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// CHOOSE BATTERY TYPE AND COUNT
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typ = AA;
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num =3;
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//---------------------------------
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//-- Battery pack parameters
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//-- Can be set by the user
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//---------------------------------
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//-- Battery pack thickness
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bottom_thick=1.5;
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fr_thick=3.5; //-- Front and rear parts
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side_thick=2; //-- Side part
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//-- Distance beween batteries
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distance_bat=1;
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//-- Nut parameters
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nut_h = 2.5;
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nut_radius = 6.4/2;
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nut_drill = 3.1;
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//------------------------------
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//-- IMPLEMENTATION
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//------------------------------
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//-- Battery dimensions: width, height and length. Change ser for batteries in series along the case.
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ser=1;
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w=typ[0];
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h=w;
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l=typ[1]*ser;
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//-- Dimensions of the inner part of the compartiment
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ip_l = l;
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ip_w = w + (w+distance_bat)*(num-1);
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ip_h = h;
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//-- Dimensions of the mother cube
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mc_l = ip_l+2*fr_thick;
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mc_w = ip_w+2*side_thick;
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mc_h = ip_h+bottom_thick;
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//-- The process of building the battery pack is just substracting
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//-- things to the mother cube
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rotate([0,0,90])
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difference() {
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//-- The mother cube
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translate([0,0,-bottom_thick/2])
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cube(size=[mc_l, mc_w, mc_h],center=true);
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//-- Array of batteries
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translate([0,0,h/2])
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cube(size=[ip_l,ip_w,ip_h],center=true);
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translate([0,-mc_w/2+w/2+side_thick,0])
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for ( i = [0:num-1] ) {
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translate([0,i*(w+distance_bat),0])
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union() {
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translate([0,0,h/2])
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cube(size=[l,w,h],center=true);
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rotate([0,90,0])
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cylinder(r=w/2, h=l-0.01, center=true, $fn=50);
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}
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}
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//-- Array of contacts
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translate([0,-mc_w/2+w/2+side_thick,0])
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for ( i = [0:num-1] ) {
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//-- Drills
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translate([0,i*(w+distance_bat),0])
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rotate([0,90,0])
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cylinder(center=true,h=l+20, r=nut_drill/2, $fn=50, center=true);
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//-- Room for the embedded nuts
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translate([0,i*(w+distance_bat),0])
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rotate([0,90,0])
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cylinder(h=l+2*nut_h, r=nut_radius, $fn=6, center=true);
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}
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}
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