X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=flyscreen-handle.scad;h=5a535fcd218a5fd0880eb23ef08a1b9c2b5d30bb;hp=6afe0bcfa18c94c0e47a94f4fb2b0d4c66f4c972;hb=4fe16ef67658b640a12f72ec23d6c2877a8ac5dc;hpb=fbb550563e362b360334843b2f04f21c8e84cdd0

diff --git a/flyscreen-handle.scad b/flyscreen-handle.scad
index 6afe0bc..5a535fc 100644
--- a/flyscreen-handle.scad
+++ b/flyscreen-handle.scad
@@ -2,23 +2,79 @@
 
 opening_height = 7.84;
 opening_depth = 7.88;
-openingcnr_dia = 1.34;
+openingedge_dia = 1.34;
 opening_protrh = 1.8;
 
 pivot_x = 6;
+inside_len = 4;
 
-pivoting_gap = 1;
+pivoting_gap = 0.1;
+
+outside_gap = 3;
+outside_len = 16;
+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
 
-Q0 = [ openingcnr_dia/2,
-       openingcnr_dia/2 + opening_height/2 ];
+inside_h = opening_height/2 - opening_protrh - inside_h_xgap/2;
+
+edge_or = openingedge_dia/2 + opening_protr_slop;
+
+Q0 = [ openingedge_dia/2,
+       openingedge_dia/2 + opening_height/2 ];
+
+p4p5d = [edge_or + ourcirc_r, 0];
 
 P0 = [ pivot_x, pivoting_gap ];
-//P4 = [ 
+P4 = Q0 - p4p5d;
+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], P3t[1] - (inside_h + ourcirc_r*2) ];
+
+P5 = Q0 + p4p5d;
+
+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 = openingcnr_dia/2;
+  cr = openingedge_dia/2;
   toph = opening_height/2 + opening_protrh;
 
   for (my=[0,1]) {
@@ -40,8 +96,88 @@ module ExtrusionSect(){
   }
 }
 
-module LeverSect(){
-  
+module PsHull(ps) {
+  hull(){
+    for (p = ps) {
+      translate(p)
+	circle(r = ourcirc_r, $fn=10);
+    }
+  }
+}
+
+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]);
+  difference(){
+    PsHull([P0,P1,P2,P5,P8,P9]);
+    translate(Q0) {
+      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(){
+  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(inadj=false){
+  P6 = inadj ? P6a : P6t;
+  mirror([0,1]) {
+    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();
+  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);
 }
 
-ExtrusionSect();
+Demo();
+//Test();