fairphone-case: wip hinge

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/fairphone-case.scad b/fairphone-case.scad
index 9cfc23a220a6a74f14f8f84d91ac762e19a44a2a..7739a1e5b9fdfe678b831ecf3e4df4dadae6bfb1 100644 (file)
--- a/fairphone-case.scad
+++ b/fairphone-case.scad
@@ -62,6 +62,8 @@ foldover_gap = 0.50;
 foldover_lever_gap = 0.50;
 
 hingescrew_shaft_dia = 2.0 + 0.25; // M2 x 12mm machine screw
+hingescrew_shaft_len = 12;
+hingescrew_nut_thick = 1.93 + 0.20; // incl. washer
 hingescrew_nut_dia = 4.72 + 0.50; // washer, actually
 lever_cover_th = 0.75;
 hingemount_th = 2.5;
@@ -74,6 +76,9 @@ buttonishleg_default_l_is_fudge = 10;
 
 strut_min_at_end = 1.5;
 
+hinge_x_gap = 0.125;
+hinge_x_postscrew_gap = 0.75;
+
 rearspeaker_gap    = [ 1.0, 1.0 ]; // each side
 
 // ---------- calculated ----------
@@ -145,6 +150,17 @@ hppM = [ epp4[0] - foldover_lever_gap - hp_r2,
 hppT = hppM + 0.5 * [0,+1] * hp_k;
 hppB = hppM + 0.5 * [0,-1] * hp_k;
 
+// hinge elevation x coords
+
+hingescrew_portion_len =
+  0.5* (hingescrew_shaft_len - hingescrew_nut_thick - hinge_x_gap);
+
+hex20 = max(epp2o[0], phone_cnr_rad);
+hex21 = hex20 + hingescrew_portion_len;
+hex22 = hex21 - hinge_x_gap;
+hex23 = hex22 + hingescrew_portion_len;
+hex24 = hex23 + hinge_x_postscrew_gap;
+
 // ---------- modules ----------
 
 module KeeperProfile(slant=0){
@@ -418,8 +434,13 @@ module HingeLeverInnerProfile(){
   }
 }
 
-module HingePortion(){
-  Flip_rhs();
+module HingePortion(x0,x1){
+  Flip_rhs() Flip_bot(1)
+    translate([x0,0,0])
+    mirror([1,0,0])
+    rotate([90,0,-90])
+    linear_extrude(height=x1-x0)
+    children(0);
 }
 
 module CaseBase(){
@@ -448,7 +469,7 @@ module Case(){ ////toplevel
       }
 
       // hinge
-      // HingePortion(hex20, hex21) HingerBaseProfile();
+      HingePortion(hex20, hex21) HingeBaseProfile();
     }
 
     // slot for keeper