opening_height = 7.84;
opening_depth = 7.88;
-openingcnr_dia = 2.75;
+openingedge_dia = 1.34;
opening_protrh = 1.8;
+pivot_x = 6;
+inside_len = 4;
+
+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
+
+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 - 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]) {
mirror([0,my]) {
- translate([cr/2, opening_height/2 + cr/2]) {
+ translate(Q0) {
hull(){
circle(r=cr, $fn=20);
translate([-cr,10]) square([cr*2, 1]);
}
}
-ExtrusionSect();
+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);
+}
+
+Demo();
+//Test();