X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=flyscreen-handle.scad;h=d7b8f572aa49a272b388fccd94ad9795fc7fb2c5;hb=c2bcba321d2c33d933f8fd5451afe93e3a07f47f;hp=1a8d15ab8576e91740721882189cfebc8307935d;hpb=1d758ca89a6f6b8729b5eabf1636f050c2781ad3;p=reprap-play.git

diff --git a/flyscreen-handle.scad b/flyscreen-handle.scad
index 1a8d15a..d7b8f57 100644
--- a/flyscreen-handle.scad
+++ b/flyscreen-handle.scad
@@ -8,11 +8,15 @@ opening_protrh = 1.8;
 pivot_x = 6;
 inside_len = 4;
 
-pivoting_gap = 1;
+pivoting_gap = 0.1;
 
 outside_gap = 3;
-outside_len = 10;
-outend_height = 4;
+outside_len = 16;
+outend_height = 3;
+
+outside_pushh = 4;
+outside_pushslope = 1.4;
+outside_push_inadj = 0.82;
 
 ourcirc_r = 0.5 / 2;
 
@@ -21,21 +25,42 @@ opening_protr_slop = 0.1;
 intooth_top_slop = 0.1;
 inside_h_xgap = 1;
 
+pivot_r = 2;
+pivot_slop = 0.25;
+
+width = 5;
+
 // calculated
 
 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 = Q0 + [ -(openingedge_dia/2 + opening_protr_slop + ourcirc_r), 0 ];
-P3 = [ P4[0], Q0[1] - openingedge_dia/2 + opening_protrh
-       - intooth_top_slop - ourcirc_r ];
+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], P3[1] - (inside_h + ourcirc_r*2) ];
+P1 = [ P2[0], P3t[1] - (inside_h + ourcirc_r*2) ];
 P9 = [ outside_len - ourcirc_r, outside_gap/2 + ourcirc_r ];
 P8 = P9 + [ 0, outend_height - ourcirc_r*2 ];
+P5 = Q0 + p4p5d;
+
+P6t = P5 + [ 0, outside_pushh - ourcirc_r*2 ];
+P7t = [ P6t[0] + (P6t[1] - P1[1]) / outside_pushslope,
+	P1[1] ];
+
+outside_push_inadj_slope = (P3t[1]-P4[1]) / (P6a[1]-P5[1]);
+
+P3a = P3t + [ -outside_push_inadj, 0 ];
+P6a = P6t + [ -outside_push_inadj, 0 ];
+P7a = [ P6a[0] + (P6a[1] - P1[1]) / outside_pushslope,
+	P1[1] ];
 
 module ExtrusionSect(){
   cr = openingedge_dia/2;
@@ -60,8 +85,68 @@ module ExtrusionSect(){
   }
 }
 
-module LeverSect(){
-  
+module PsHull(ps) {
+  hull(){
+    for (p = ps) {
+      translate(p)
+	circle(r = ourcirc_r, $fn=10);
+    }
+  }
+}
+
+module LeverSect(inadj=false){
+  P3 = inadj ? P3a : P3t;
+  diag = inadj ? 0 : atan(outside_push_inadj_slope);
+  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 LeverSectTop(){
+  difference(){
+    LeverSect(false);
+    translate([pivot_x,0]) circle(r= pivot_r + pivot_slop, $fn=20);
+  }
+}
+
+module LeverSectBot(inadj=false){
+  P6 = inadj ? P6a : P6t;
+  P7 = inadj ? P7a : P7t;
+  mirror([0,1]) {
+    LeverSect(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();
+}
+
+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();