startech-dell-usb-cable-retainer.scad

   1 // -*- C -*-
   2
   3 include <utils.scad>
   4
   5 body_depth = 40.15 + 4;
   6 body_height = 16.78 + 0.50;
   7
   8 back_round_depth = 2.0;
   9 back_round_rad = 8.0;
  10 back_above_height = 5.3;
  11 back_thick = 3.0;
  12
  13 conn_thick = 6.42 + 2.25;
  14 wire_thick = 6.00 + 0.75;
  15 total_depth = 63.82 - 1.0;
  16
  17 body_front_overlap = 3;
  18
  19 prong_higher = 1.5;
  20 prong_depth = 5.0;
  21 prong_width = 2.0;
  22
  23 base_thick = 4;
  24
  25 $fa= 3;
  26 $fs= 0.3;
  27
  28 // calculated
  29
  30 epp0 = [ 0, -body_height/2 ];
  31 epp1 = [ 0, -conn_thick/2 ];
  32 epp2 = epp1 + [ -body_front_overlap, 0 ];
  33 epp3 = [ +body_depth -total_depth, epp2[1] ];
  34 epp4 = [ epp3[0], +conn_thick/2 +prong_higher ];
  35 epp4a = epp4 + prong_higher * [0,-1];
  36 epp4b = epp4 + prong_higher * [1,0];
  37 epp5 = epp4 + [ -prong_depth, 0 ];
  38 epp6 = [ epp5[0], epp0[1] -base_thick ];
  39 epp7 = [ epp2[0], epp6[1] ];
  40 epp12 = [ +body_depth +back_round_rad, 0 ];
  41 epp11 = [ +body_depth +back_round_depth, epp0[1] ];
  42 epp10 = [ epp11[0], +back_above_height ];
  43 epp9 = epp10 + [ +back_thick, 0 ];
  44 epp8 = [ epp9[0], epp7[1] ];
  45
  46 y1 = wire_thick/2;
  47 y2 = y1 + prong_width;
  48
  49 module MainElevation(){
  50   polygon([epp0,
  51            epp1,
  52            epp3,
  53            epp4a,
  54            epp4b,
  55            epp5,
  56            epp6,
  57            epp8,
  58            epp9,
  59            epp10,
  60            epp11
  61            ]);
  62   intersection(){
  63     translate(epp12) circle(r= back_round_rad);
  64     rectfromto(epp8,
  65                epp10 + [-back_round_rad, 0]);
  66   }
  67 }
  68
  69 module Retainer(){
  70   difference(){
  71     linextr_y_xz( -y2, +y2 ) {
  72       MainElevation();
  73     }
  74     linextr_y_xz( -y1, +y1 ) {
  75       rectfromto( epp7 + [+1, -1],
  76                   epp5 + [-1, +1] );
  77     }
  78   }
  79 }
  80
  81 module RetainerPrint(){
  82   rotate([0,0,180]) Retainer();
  83 }
  84
  85 //MainElevation();
  86
  87 RetainerPrint();