laptop-sound-cable-hooks.scad

   1 // -*- C -*-
   2
   3 include <utils.scad>
   4
   5 wall_th = 2;
   6 hook_th = 4;
   7 hook_hole = 4;
   8
   9 plug_entry_gap = 1.0;
  10
  11 plug_l_d = [[ 27.78,
  12               10.62 + 0.50 ],
  13             [ 40.88,
  14               8.56 + 0.50 ],
  15             ];
  16
  17 plug_stem = [ 2.72 + 0.50,
  18               5.20 + 0.50 ];
  19
  20 palmrest_from_plug_z = 3.98;
  21 laptop_th = 16.31 + 0.75;
  22
  23 tongue_len = 50;
  24
  25 // calculated
  26
  27 hook_th_plug_holder =
  28   plug_l_d[0][1]/2 + wall_th * sin(22.5);
  29
  30 hook_tongue_h = hook_hole + wall_th*2;
  31
  32 plug_l_d_smallest = plug_l_d[len(plug_l_d)-1];
  33 plug_hook_x_min = -plug_l_d_smallest[0] - wall_th;
  34 plug_hook_z_start = -plug_l_d_smallest[1]/2 - wall_th;
  35
  36 z_laptop_base = palmrest_from_plug_z - laptop_th;
  37 z_hook_min = z_laptop_base - hook_tongue_h;
  38
  39 module PlugMainPlan() {
  40   for (l_d = plug_l_d) {
  41     l = l_d[0];
  42     d = l_d[1];
  43     rectfromto([ -l, -d/2 ],
  44                [  0, +d/2 ]);
  45   }
  46 }
  47
  48 module PlugHolderPlan() {
  49   intersection(){
  50     hull()
  51       offset(r= wall_th)
  52       PlugMainPlan();
  53
  54     rectfromto([-100,-100], [-plug_entry_gap,+100]);
  55   }
  56 }
  57
  58 module PlugHookHookPlan(){
  59   polygon([ [ plug_hook_x_min, 0 ],
  60             [ plug_hook_x_min, plug_hook_z_start ],
  61             [ plug_hook_x_min + (plug_hook_z_start - z_hook_min),
  62               z_hook_min ],
  63             [ -plug_entry_gap, z_hook_min ],
  64             [ -plug_entry_gap, 0 ],
  65             ]);
  66 }
  67
  68 module TonguePlan(){
  69   difference(){
  70     rectfromto([ -plug_entry_gap - 1, z_hook_min ],
  71                [ tongue_len, z_laptop_base ]);
  72     translate([ tongue_len - wall_th - hook_hole/2,
  73                 z_hook_min + wall_th + hook_hole/2 ])
  74       circle(r = hook_hole/2);
  75   }
  76 }
  77
  78 module FarHookPlan(){
  79   TonguePlan();
  80 }
  81
  82 module RotateIntersect(n=6){
  83   intersection_for (r = [0:n-1]) {
  84     rotate([r/n * 360,0,0])
  85       linextr(-100,100) children(0);
  86   }
  87 }
  88
  89 module PlugHolder(){
  90   difference(){
  91     union(){
  92       RotateIntersect(8)
  93         PlugHolderPlan();
  94
  95       rotate([0,0,180]) {
  96         linextr_y_xz(-hook_th_plug_holder/2,
  97                      +hook_th_plug_holder/2)
  98           PlugHookHookPlan();
  99
 100         linextr_y_xz(-hook_th/2,
 101                      +hook_th/2)
 102           TonguePlan();
 103       }
 104     }
 105
 106     RotateIntersect(6)
 107       PlugMainPlan();
 108
 109     linextr(-plug_stem[1]/2, 100)
 110       rectfromto([ -100, -plug_stem[0]/2 ],
 111                  [ +100, +plug_stem[0]/2 ]);
 112   }
 113 }
 114
 115 module PlugHolderPrint(){ ////toplevel
 116   render() PlugHolder();
 117 }
 118
 119 module DemoPlan() { ////toplevel
 120   translate([0,0,-10]) color("grey") PlugHolderPlan();
 121   PlugMainPlan();
 122   translate([0,0,-5]) color("blue") {
 123     PlugHookHookPlan();
 124     TonguePlan();
 125   }
 126
 127   translate([0,40,0]) {
 128     mirror([1,0,0]) {
 129       FarHookPlan();
 130     }
 131   }
 132 }