X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=fairphone-case.scad;h=c321dbec7f66965c9455d091f470b61251eb5348;hp=13b26585a6f02da9ecf75056dff5be2b3888ec2f;hb=b47a6fbe901394bc680c4ac79e3e26d8197ce948;hpb=5f99c09b118d35198de2548fa9601d4ed461267a diff --git a/fairphone-case.scad b/fairphone-case.scad index 13b2658..c321dbe 100644 --- a/fairphone-case.scad +++ b/fairphone-case.scad @@ -4,6 +4,10 @@ include phone = [ 75.0, 145.0 ]; +prop_buildout_less = 3; + +prop_angles = [ 15, 30, 45, 60 ]; + bumper = [ 0.250, -0.025 ]; // ^ One side. Overall size is increased by twice this. // If no bumpers, is the gap around the phone. @@ -67,7 +71,7 @@ lid_gap_x = 0.25; lid_gap_z = 0.25; lid_lip = 1.75; -catch_slop = 0.25; +catch_slop = 0.50; foldover_gap = 0.50; foldover_lever_gap = 0.50; @@ -96,7 +100,7 @@ hinge_x_postscrew_gap = 0.75; hinge_x_arms_gap = 0.35; hinge_r_arms_gap = 0.55; -rearspeaker_gap = [ 1.0, 1.0 ]; // each side +rearspeaker_gap = [ 2.0, 2.0 ]; // each side catch_len = 7.5; catch_width = 15; @@ -108,6 +112,19 @@ catch_height = 0.35; catch_finger_height = 1.5; catch_finger_depth = 2.5; +prop_recess_under = 0.50; +prop_recess_slop = 0.200; // each side +prop_end_dia = 0.5; +prop_main_th = 3; +prop_taper_len = 6; +prop_main_width = 3; +prop_side_gap = 0.75; // each side +prop_lidrecess_behind = 0.75; +prop_caserecess_behind = 0.75; +prop_caserecess_taper = 0.35; // one side only +prop_prop_gap = 0.5; +prop_prong_heel_slope = 0.5; + // ---------- calculated ---------- phone_width = (phone + bumper*2)[0]; @@ -115,6 +132,8 @@ phone_height = (phone + bumper*2)[1]; inside_br = [phone_width, -phone_height]; +prop_prong_h = prop_main_th; + //echo(camera_pos_tl + bumper, // camera_pos_br + bumper); @@ -124,6 +143,13 @@ lid_buttoncover_overlap = case_th_lip + keeper_gap_z_top; phone_backside_slope_thick = phone_total_thick - phone_edge_thick; +//prop_lidrecess_depth = case_th_lid - prop_recess_under; + +//prop_nose_len = case_th_lid - prop_recess_under; +//prop_recess_slope = tan(prop_max_angle); // bigger means steeper +//prop_recess_width = prop_main_th / cos(prop_max_angle) + prop_backfwd_gap; + + //lid_lip_overlap_width xxx bad name = ; //lid_lip_inner_slope = [ 5, 5 ]; // xxx @@ -150,6 +176,8 @@ lp_r12 = case_th_lid - (lpp11[1] - lpp10[1]); lpp12 = [ epp4[0] + lp_r12, lpp11[1] ]; lpp13 = [ lpp12[0], lpp12[1] + lp_r12 ]; +case_bottom_z = epp2o[1] - case_th_bottom; + // button profile bppM = epp4 + [0,5]; bppN = [ 0.5 * (epp0[0] + epp4[0]), bppM[1] ]; @@ -197,8 +225,8 @@ hex22 = hex21 + hinge_x_gap; hex23 = hex22 + hingescrew_portion_len - hingescrew_nut_thick; // bodge, need to divvy this up more sensibly hex24 = hex20 + hingescrew_shaft_len + hinge_x_postscrew_gap; -echo(hex20, hex21, hex22, hex23, hex24); -echo(hingescrew_portion_len); +//echo(hex20, hex21, hex22, hex23, hex24); +//echo(hingescrew_portion_len); // catch @@ -221,6 +249,39 @@ cppQ = [ cppR[0], cppV[1] - (catch_finger_height - cp_rQ) ]; cppF = [ cppV[0] + catch_finger_depth, cppC[1] ]; +// prop recess in case + +prop_x_pos = phone_width/2; + +prop_recess_hw = 0.5 * prop_main_width + prop_side_gap; + +prc_r1 = prop_end_dia/2; +prc_r3 = prc_r1 + prop_recess_slop; + +prcp2 = [ epp4[0] + prop_buildout_less, + case_bottom_z ]; + +prop_caserecess_buildout_r = -1; // prcp2[0] - epp2o[0]; + +prcp1 = [ epp2o[0], + epp2i[1] - prc_r3 ]; + +// prop recess in lid + +prl_r10 = prop_end_dia/2; +prl_r10o = prl_r10 + prop_recess_slop; + +prlp10 = lpp10 + [1,1] * prl_r10o + + [1,0] * prop_lidrecess_behind + + [0,1] * prop_recess_under; + +// prop + +prpp10 = [0,0]; +prpp11 = [0, prop_taper_len]; + +prp_r10 = prl_r10; + // ---------- modules ---------- module KeeperProfile(slant=0){ @@ -561,6 +622,82 @@ module CaseBase(){ EdgeProfile(); } +module PropProfile(gamma, cut=0){ ////toplevel + // https://en.wikipedia.org/wiki/Solution_of_triangles#Two_sides_and_the_included_angle_given_(SAS) + k = hp_k; + p = phone_height - prlp10[0] - hppB[0]; + x = k / (2 * sin(gamma/2)) - hppT[0]; + b = p + x; + + q = phone_height - hppT[0]; // prpp7[0] is 0 by definition + a = q + x; + c = sqrt(a*a + b*b - 2*a*b*cos(gamma)); + alpha = acos( (b*b + c*c - a*a) / (2*b*c) ); + + theta = 90 - alpha; + beta = 180 - alpha - gamma; + psi = 90 - beta + atan(prop_caserecess_taper); + + echo("abc", a,b,c); + + v1 = [ [ cos(psi), -sin(psi) ], // x + [ sin(psi), cos(psi) ] ]; // y + + prpp7 = [0, c + (lpp13[1] - prpp10[1]) ]; + + prp_r1 = prc_r1; + prp_r11 = prop_main_th/2; + + prpp1 = prpp7 + [1,0] * + // this is approximate, but will do + (prop_main_th/2 + prop_prop_gap + prcp1[0] - epp4[0]); + prpp3 = prpp1 + + v1[0] * -prp_r1 + + v1[1] * ((prcp2[1] - prcp1[1]) - prop_prop_gap); + prpp12 = prpp3 + [1,0] * + (prop_end_dia + prop_caserecess_taper * (prpp1[1] - prpp3[1])); + prp_r8 = prop_main_th; + prpp4 = [ prop_main_th/2, prpp3[1] ]; + prp_r5 = prp_r8; + prpp5 = [ prpp12[0] - prp_r5, + prpp3[1] - prop_prong_h + prp_r5 ]; + prpp6 = prpp4 + [0,-1] * (prop_prong_h + + prop_prong_heel_slope * (prpp5[0] - prpp4[0])); + prpp8 = prpp4 + [0,-1] * prp_r8; + prpp9 = prpp8 + [-1,0] * prp_r8; + + //#circleat(prpp5,1); + + if (!cut) { + hull(){ + translate(prpp8) + intersection(){ + circle(prp_r8); + rectfromto([-20,-0], [20,20]); + } + rectfromto(prpp6, prpp9); + translate(prpp5) intersection(){ + circle(prp_r5); + rectfromto([-10,-10], [10,0]); + } + rectfromto(prpp12 + [0,-0.1], prpp3); + } + %hull(){ + circleat(prpp1, prp_r1); + rectfromto(prpp12 + [0,-0.1], prpp3); + } + } + // main shaft + rotate([0,0, cut ? -theta : 0]){ + hull(){ + extra = cut ? prop_recess_slop : 0; + rectfromto(prpp6, prpp9); + circleat(prpp11, prp_r11 + extra); + circleat(prpp10, prp_r10 + extra); + } + } +} + module Case(){ ////toplevel difference(){ union(){ @@ -582,6 +719,16 @@ module Case(){ ////toplevel // hinge HingePortion(hex20, hex21) HingeBaseProfile(); + + // buildout for prop recess + if (prop_caserecess_buildout_r > 0) Flip_rhs(1) + linextr(case_bottom_z, epp2i[1]) + hull() { + for (dxs = [-1,+1]) + circleat([ prop_x_pos + dxs * prop_caserecess_buildout_r, + -epp2o[0] ], + r = epp2o[0] - prcp2[0]); + } } // slot for keeper @@ -624,6 +771,7 @@ module Case(){ ////toplevel linear_extrude(height= 20) ButtonPlan($button_l, 1,1); } + } // apertures along top edge @@ -649,6 +797,18 @@ module Case(){ ////toplevel // catch striker CatchPortion(catch_width + catch_side_gap*2) CatchCutProfile(); + + // prop recess + Flip_rhs(1) + translate([prop_x_pos,0,0]) + rotate([90,0,90]) + linextr(-prop_recess_hw, +prop_recess_hw) + mirror([1,0]) + hull(){ + for (d=[ [0,0], [0,-1], [+1,-1/prop_caserecess_taper] ]) + circleat(prcp1 + 20*d, + prc_r3); + } } } @@ -811,6 +971,19 @@ module LidPrint(){ ////toplevel Lid(); } +module TestSelectPropRecesses(posns){ + linextr(-100,100){ + translate([phone_width/2, -phone_height]){ + square([ 3, 500 ], center=true); + for (y=posns) + hull() + for (dy=[ -prp5[0], -prp2[0] ]) + translate([0,y+dy]) + square([prop_main_width+5, 5], center=true); + } + } +} + module TestSelectFrame(){ include = [1,-1] * (epp2i[0] + 4); @@ -822,6 +995,11 @@ module TestSelectFrame(){ } } +module TestSelectLidFrame(){ + TestSelectFrame(); + TestSelectPropRecesses(prop_lid_posns); +} + module TestFrameCase(){ ////toplevel intersection(){ Case(); @@ -836,7 +1014,7 @@ module TestFrameCase(){ ////toplevel module TestFrameLidPrint(){ ////toplevel rotate([0,180,0]) intersection(){ Lid(); - TestSelectFrame(); + TestSelectLidFrame(); } } @@ -864,7 +1042,7 @@ module HingeScrews(){ module DemoFrame(){ ////toplevel color("red") TestFrameCase(); - color("blue") intersection(){ Lid(); TestSelectFrame(); } + color("blue") intersection(){ Lid(); TestSelectLidFrame(); } color("black") HingeScrews(); %HingeLever(); } @@ -872,7 +1050,7 @@ module DemoFrame(){ ////toplevel module DemoHingedFrame(){ ///toplevel color("red") TestFrameCase(); translate([0,0, -2*hp_k]) - color("blue") intersection(){ Lid(); TestSelectFrame(); } + color("blue") intersection(){ Lid(); TestSelectLidFrame(); } Flip_hinge(){ color("orange") HingeLever(); @@ -927,6 +1105,16 @@ module DemoProfiles(){ ////toplevel color("blue") CatchCatchProfile(); color("red") difference(){ EdgeProfile(); CatchCutProfile(); } } + + translate([40,-30]) { + difference(){ + %LidEdgeProfile(); + //translate(prlp10) + //PropProfile(10, 1); + } + translate(prlp10) + PropProfile(15, 0); + } } //EdgeProfile(); @@ -937,3 +1125,4 @@ module DemoProfiles(){ ////toplevel //LidEdgeProfile(); //KeeperProfile(); //DemoProfiles(); +//PropRecess();