flyscreen-handle: wip straps

[reprap-play.git] / flyscreen-handle.scad

diff --git a/flyscreen-handle.scad b/flyscreen-handle.scad
index 2eccdbe7a529cce365a3d91326edf6e3d11e0bb5..5a535fcd218a5fd0880eb23ef08a1b9c2b5d30bb 100644 (file)
--- a/flyscreen-handle.scad
+++ b/flyscreen-handle.scad
@@ -8,7 +8,7 @@ opening_protrh = 1.8;
 pivot_x = 6;
 inside_len = 4;
 
-pivoting_gap = 1;
+pivoting_gap = 0.1;
 
 outside_gap = 3;
 outside_len = 16;
@@ -16,14 +16,26 @@ outend_height = 3;
 
 outside_pushh = 4;
 outside_pushslope = 1.4;
+outside_push_inadj = 0.82;
 
 ourcirc_r = 0.5 / 2;
 
+ribble_dia = 2.2;;
+
 opening_protr_slop = 0.1;
 
 intooth_top_slop = 0.1;
 inside_h_xgap = 1;
 
+pivot_r = 2;
+pivot_slop = 0.25;
+
+strap_above = 0.1;
+strap_th = 2.5;
+strap_below = 3;
+
+width = 5;
+
 // calculated
 
 inside_h = opening_height/2 - opening_protrh - inside_h_xgap/2;
@@ -37,17 +49,30 @@ p4p5d = [edge_or + ourcirc_r, 0];
 
 P0 = [ pivot_x, pivoting_gap ];
 P4 = Q0 - p4p5d;
-P3 = [ P4[0], Q0[1] - openingedge_dia/2 + opening_protrh
-       - intooth_top_slop - ourcirc_r ];
+P3t = [ P4[0], Q0[1] - openingedge_dia/2 + opening_protrh
+       - intooth_top_slop - ourcirc_r ];
 P2 = P4 + [ -(inside_len - ourcirc_r*2), 0 ];
-P1 = [ P2[0], P3[1] - (inside_h + ourcirc_r*2) ];
-P9 = [ outside_len - ourcirc_r, outside_gap/2 + ourcirc_r ];
-P8 = P9 + [ 0, outend_height - ourcirc_r*2 ];
+P1 = [ P2[0], P3t[1] - (inside_h + ourcirc_r*2) ];
+
 P5 = Q0 + p4p5d;
-P6 = P5 + [ 0, outside_pushh - ourcirc_r*2 ];
-P7 = [ P6[0] + (P6[1] - P1[1]) / outside_pushslope,
+
+P8t = [ outside_len - ourcirc_r, P5[1] ];
+P9t = P8t + [ 0, -(strap_above + strap_th + strap_below - ourcirc_r*2) ];
+
+P9b = [ P9t[0], -P9t[1] + outside_gap ];
+P8b = P9b + [ 0, outend_height ];
+
+P6t = P5 + [ 0, outside_pushh - ourcirc_r*2 ];
+P7 = [ P6t[0] + (P6t[1] - P1[1]) / outside_pushslope,
        P1[1] ];
 
+P3a = P3t + [ -outside_push_inadj, 0 ];
+P6a = P6t + [ -outside_push_inadj, 0 ];
+
+outside_push_inadj_slope = (P3t[1]-P4[1]) / (P6a[1]-P5[1]);
+
+ribble_rad = ribble_dia/2;
+
 module ExtrusionSect(){
   cr = openingedge_dia/2;
   toph = opening_height/2 + opening_protrh;
@@ -80,34 +105,79 @@ module PsHull(ps) {
   }
 }
 
-module LeverSect(){
+module LeverSect(top, inadj=false){
+  P3 = inadj ? P3a : P3t;
+  P8 = top ? P8t : P8b;
+  P9 = top ? P9t : P9b;
+  diag = inadj ? atan(outside_push_inadj_slope) : 0;
   PsHull([P2,P3,P4]);
-  PsHull([P5,P6,P7]);
   difference(){
     PsHull([P0,P1,P2,P5,P8,P9]);
     translate(Q0) {
-      hull(){
-       circle(r=edge_or, $fn=20);
-       translate([0,10]) circle(r=edge_or, $fn=20);
+      rotate(diag){
+       hull(){
+         circle(r=edge_or, $fn=20);
+         translate([0,10]) circle(r=edge_or, $fn=20);
+       }
       }
     }
   }
 }
 
+module StrapSect(){
+  translate(P9t) {
+    difference(){
+      circle(r = strap_below + strap_th, $fn=40);
+      circle(r = strap_below,            $fn=40);
+    }
+  }
+}
+
 module LeverSectTop(){
-  LeverSect();
+  difference(){
+    union(){
+      LeverSect(true, false);
+      for (x = [ P8t[0] + ourcirc_r - ribble_rad :
+                -ribble_rad * 4 :
+                Q0[0] + edge_or + ribble_rad*2 ]) {
+       translate([x, P5[1] + ourcirc_r])
+         circle(r = ribble_rad, $fn=20);
+      }
+    }
+    translate([pivot_x,0]) circle(r= pivot_r + pivot_slop, $fn=20);
+  }
 }
 
-module LeverSectBot(){
+module LeverSectBot(inadj=false){
+  P6 = inadj ? P6a : P6t;
   mirror([0,1]) {
-    LeverSect();
+    LeverSect(false, inadj);
+    PsHull([P5,P6,P7]);
+    translate([pivot_x,0]) circle(r=pivot_r, $fn=20);
   }
 }
 
 module Demo(){
   translate([0,0,-5]) color("white") ExtrusionSect();
   LeverSectTop();
-  LeverSectBot();
+  translate([0,0,5]) LeverSectBot();
+  color("black") LeverSectBot(true);
+  color("blue") translate([0,0,10]) StrapSect();
+}
+
+module LeverTop(){
+  linear_extrude(height=width, convexity=100) LeverSectTop();
+}
+
+module LeverBot(inadj=false){
+  linear_extrude(height=width, convexity=100) LeverSectBot(inadj);
+}
+
+module Test(){
+  translate([0,2,0]) LeverTop();
+  LeverBot();
+  translate([0,-opening_height - 2,0]) LeverBot(true);
 }
 
 Demo();
+//Test();