X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=fairphone-case.scad;h=04c4d61b93c93c6c11f5717a98d86a11bedca2a1;hp=d85c37783f6cd37ed07fbad14eeaef87a09f0e13;hb=85db45c1dd57ad34e781f8d108368fa1124a2e47;hpb=511889ef2bac7f3e0bdd1ceea8fff67c3fb2770e diff --git a/fairphone-case.scad b/fairphone-case.scad index d85c377..04c4d61 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. @@ -22,7 +26,7 @@ phone_backside_slope_outer = 1.0; // larger means shallower camera_pos_tl = [ 6.450, 12.750 ]; // measured from tl corner camera_pos_br = [ 22.300, 37.600 ]; // tl/br as seen from back -jack_pos = [ 14.38, 7.96 ]; +jack_pos = [ 13.83, 8.485 ]; jack_dia = 10.64 + .5; // some jack I had lying around noisecancelmic_pos = [ 19.54, 7.37 ]; // from rhs @@ -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; @@ -96,18 +100,31 @@ 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; catch_thickness = 1.0; catch_side_gap = 0.75; // each side -catch_depth = 1.25; +catch_depth = 0.75; 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 = 4; +prop_side_gap = 0.75; // each side +prop_lidrecess_behind = 0.75; +prop_caserecess_behind = 0.75; +prop_caserecess_taper = 0.45; // 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] ]; @@ -161,6 +189,9 @@ bppO = [ bppN[0], bppP[1] ]; bppL = lpp10 + [5,0]; bppK = [ bppL[0], bppN[1] ]; bppJ = [ bppN[0], bppL[1] ]; +bppU = [ bppJ[0], lpp12[1] ]; +bppV = lpp11; +bppW = lpp10; // hinge plan hp_rn = hingescrew_nut_dia/2; @@ -197,8 +228,8 @@ 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 +252,39 @@ 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] + prc_r3 + prop_caserecess_behind, + epp2i[1] - prc_r3 - prop_recess_under]; + +// 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){ @@ -260,7 +324,9 @@ module LidEdgeProfile(){ module ButtonCoverProfile(){ intersection(){ - polygon([ bppM, bppP, bppO, bppJ, bppL, bppK ]); + polygon(concat([ bppM, bppP, bppO, bppJ ], + (enable_support ? [ bppU, bppV, bppW ] : []), + [ bppL, bppK ])); hull(){ EdgeProfile(); LidEdgeProfile(); @@ -523,12 +589,15 @@ module HingeLeverOuterProfile(){ } module HingeLeverInnerProfile(){ - for (c = [hppT, hppB]) { - hull() + for (s = [-1,+1]) { + c = s > 0 ? hppT : hppB; + translate(c) + mirror([0,0,s>0]) + hull() for (x=[-20,20]) - for (y=[0, c[1] - hppM[1]]) + for (y=[0, s * 10]) translate([x,y]) - circleat(c, hp_rn); + circle(hp_rn); } } @@ -561,6 +630,102 @@ module CaseBase(){ EdgeProfile(); } +function prop_x(gamma) = hp_k / (2 * sin(gamma/2)) - hppT[0]; + +module PropProfileAssignments(gamma){ + // https://en.wikipedia.org/wiki/Solution_of_triangles#Two_sides_and_the_included_angle_given_(SAS) + x = prop_x(gamma); + p = phone_height + prlp10[0] - hppB[0]; + b = p + x; + + q = phone_height - hppT[0] - prcp1[0]; // $prpp7[0] is 0 by definition + a = q + x; + c = sqrt(a*a + b*b - 2*a*b*cos(gamma)); + $prp_alpha = acos( (b*b + c*c - a*a) / (2*b*c) ); + + $prp_theta = 90 - $prp_alpha; + beta = 180 - $prp_alpha - gamma; + psi = 90 - beta; + + //echo("abc", a,b,c); + + v1 = [ [ cos(psi), -sin(psi) ], // x + [ sin(psi), cos(psi) ] ]; // y + + $prpp7 = [0, c + (lpp13[1] - $prpp10[1] - hp_k) ]; + + $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] - cppA[0]); + $prpp3 = $prpp1 + + v1[0] * -$prp_r1 + + v1[1] * ((prcp2[1] - prcp1[1]) - prop_prop_gap); + $prpp12 = $prpp3 + v1[0] * + (prop_end_dia + prop_caserecess_taper * ($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] * $prp_r8; + + children(); +} + +module PropProfile(gamma, cut=0, rot=0){ ////toplevel + PropProfileAssignments(gamma){ + + //#circleat($prpp3,1); + //#circleat($prpp12,1); + + if (!cut) { + hull(){ + translate($prpp8) + intersection(){ + circle($prp_r8); + polygon([[-20,-0], [20,20], [0,0]]); + } + rectfromto($prpp6, $prpp9); + translate($prpp5) intersection(){ + circle($prp_r5); + polygon([[-10,-10], [0,0], [10,0]]); + } + rectfromto($prpp12 + [0,-0.1], $prpp3); + } + hull(){ + circleat($prpp1, $prp_r1); + rectfromto($prpp12 + [0,-0.1], $prpp3); + } + } + // main shaft + rotate([0,0, rot*-$prp_theta]){ + hull(){ + extra = cut ? prop_recess_slop : 0; + rectfromto($prpp6, $prpp9); + circleat($prpp11, $prp_r11 + extra); + circleat($prpp10, $prp_r10 + extra); + } + } + } +} + +module PropAggregateProfile(){ + for (angle = prop_angles) + PropProfile(angle, 0,0); +} + +module Prop(){ ////toplevel + hw = prop_main_width/2; + linextr(-hw, +hw) + PropAggregateProfile(); +} + module Case(){ ////toplevel difference(){ union(){ @@ -582,6 +747,16 @@ module Case(){ ////toplevel // hinge HingePortion(hex20, hex21) HingeBaseProfile(); + + // buildout for prop recess + if (prop_caserecess_buildout_r > 0) Flip_rhs(1) + linextr(case_bottom_z, epp2i[1]) + hull() { + for (dxs = [-1,+1]) + circleat([ prop_x_pos + dxs * prop_caserecess_buildout_r, + -epp2o[0] ], + r = epp2o[0] - prcp2[0]); + } } // slot for keeper @@ -624,6 +799,7 @@ module Case(){ ////toplevel linear_extrude(height= 20) ButtonPlan($button_l, 1,1); } + } // apertures along top edge @@ -649,6 +825,18 @@ module Case(){ ////toplevel // catch striker CatchPortion(catch_width + catch_side_gap*2) CatchCutProfile(); + + // prop recess + Flip_rhs(1) + translate([prop_x_pos,0,0]) + mirror([0,1,0]) + rotate([90,0,90]) + linextr(-prop_recess_hw, +prop_recess_hw) + hull(){ + for (d=[ [0,0], [0,-1], [+1,-1/prop_caserecess_taper] ]) + circleat(prcp1 + 20*d, + prc_r3); + } } } @@ -683,6 +871,15 @@ module Lid(){ ////toplevel // screw holes in the hinge arms HingeScrews(); + + // prop recess + translate([prop_x_pos, -prlp10[0], prlp10[1]]) + mirror([0,1,0]) + rotate([90,0,90]) + linextr(-prop_recess_hw, +prop_recess_hw) + hull() + for (pa = prop_angles) + PropProfile(pa, 1,1); } } @@ -822,6 +1019,10 @@ module TestSelectFrame(){ } } +module TestSelectLidFrame(){ + TestSelectFrame(); +} + module TestFrameCase(){ ////toplevel intersection(){ Case(); @@ -833,10 +1034,19 @@ module TestFrameCase(){ ////toplevel } } +module TestTopApertures(){ ////toplevel + intersection(){ + Case(); + TestSelectFrame(); + translate([-100, -35, -100]) + cube([400, 100, 200]); + } +} + module TestFrameLidPrint(){ ////toplevel rotate([0,180,0]) intersection(){ Lid(); - TestSelectFrame(); + TestSelectLidFrame(); } } @@ -862,9 +1072,51 @@ module HingeScrews(){ } } +module DemoPropAngleSelect(c){ + color(c) difference(){ + union(){ children(); } + translate([ prop_x_pos, -400, -200 ]) + cube([ 400,800,400 ]); + } +} + +module DemoPropAngle(ang){ + hL = [0, -(phone_height - hppT[0]), hppT[1] - hp_k*2]; + hC = [0, -(phone_height - hppB[0]), hppB[1]]; + + translate(hL) + rotate([ang/2,0,0]) + translate(-hL) + translate(hC) + rotate([ang/2,0,0]) + translate(-hC) { + DemoPropAngleSelect("red") Case(); + + color("orange") + translate([prop_x_pos, -prcp1[0], prcp1[1]]) + PropProfileAssignments(ang) { + echo($prpp1); + rotate([-$prp_theta, 0, 0]) + translate([0, $prpp1[0], -$prpp1[1]]) + rotate([90,0,-90]) + Prop(); + } + } + + translate([0,0, -hp_k*2]) + DemoPropAngleSelect("blue") + Lid(); +} + +module DemoPropAngles(){ ////toplevel + for (i=[0 : len(prop_angles)-1]) + translate(i * [0, -100, 100]) + DemoPropAngle(prop_angles[i]); +} + module DemoFrame(){ ////toplevel color("red") TestFrameCase(); - color("blue") intersection(){ Lid(); TestSelectFrame(); } + color("blue") intersection(){ Lid(); TestSelectLidFrame(); } color("black") HingeScrews(); %HingeLever(); } @@ -872,7 +1124,7 @@ 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 +1179,19 @@ module DemoProfiles(){ ////toplevel color("blue") CatchCatchProfile(); color("red") difference(){ EdgeProfile(); CatchCutProfile(); } } + + translate([40,-30]) { + difference(){ + LidEdgeProfile(); + translate(prlp10) + PropProfile(10, 1, 0); + } + translate(prlp10) + PropProfile(15, 0); + } + translate([60,-30]) { + PropAggregateProfile(); + } } //EdgeProfile(); @@ -937,3 +1202,4 @@ module DemoProfiles(){ ////toplevel //LidEdgeProfile(); //KeeperProfile(); //DemoProfiles(); +//PropRecess();