From: Jan "Yenya" Kasprzak Date: Sun, 19 Jan 2014 22:35:17 +0000 (+0100) Subject: case.scad: alternative mounting holes, thicker side clips, clip pretension X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=commitdiff_plain;h=4bb08ddf38fd72518684972dd82853c6e820cf62;p=heater.git case.scad: alternative mounting holes, thicker side clips, clip pretension --- diff --git a/case.scad b/case.scad index e4acfcb..a5d6347 100644 --- a/case.scad +++ b/case.scad @@ -1,18 +1,13 @@ -/* TODO - - nabeh zaklapavaciho hranolu by mel byt zkoseny - - vystup pro kabel leze do vystupu pro snuru pri vetsim wall - - diry pro uchyceni jsou mozna prilis male -*/ -lowres = 1; // fast rendering or fine printing with print-friendly orientation +lowres = 0; // fast rendering or fine printing with print-friendly orientation eps = 0.01; infty = 300; -wall = 2.0; // generic wall thickness +wall = 1.5; // generic wall thickness // 18650 is ~18mm diameter, ~65mm length, -batt_diam = 18 + 0.6; -batt_len = 65 + 1.5; +batt_diam = 18 + 1.0; +batt_len = 65 + 2.0; cable_sep = 2; @@ -28,14 +23,12 @@ pcb_groove = 1; body_top_h = 0.35 * batt_diam; // cube-shaped part of the body -outwire_thick = 2.2; wire_thick = 2.2; wire_sep = 3.5; -cable_out_diam = 5.2; batt_end_h = wire_sep/2 + wire_thick/2 + 1.5;; -lid_sep = 0.1; // the lid is made this much smaller to separate from the body +lid_sep = 0.2; // the lid is made this much smaller to separate from the body sw_diam = 2.5 + 0.5; led_diam = 3 + 0.5; @@ -45,8 +38,17 @@ pcb_xoff = 90 * 25.4/1000; // offset of the LED from the middle of the PCB prg_len = 10; // programming connector prg_width = 7; -rear_clip_hole_dist = 10; // distance between the holes in the rear clip -rear_clip_aspect = 0.35; // w/h aspect ratio of the ellipse of the rear clip +outcable_h = 4.5; +outcable_w = 2.5; + +// mounting cylinder + holes +mounthole_w = 5; +mounthole_h = 3; +mountcyl_w = mounthole_w + 4*wall; +mountcyl_h = 2*wall; +mountcone_h = mounthole_h + 2*wall; + +clip_pretension = 0.5; module case_body() { hull() { @@ -65,14 +67,28 @@ module case_body() { -batt_diam/2-2*pcb_comp_h-pcb_thick-wall]) cube([front_flat_len, pcb_width+wall, eps]); }; - for (x = [-1, 1]) scale([x, 1, 1]) hull() { - for (x0 = [0-wall, 10+wall]) - translate([batt_len/2-wall-wire_thick-x0, batt_diam/2, 0]) - rotate([-90, 0, 0]) scale([rear_clip_aspect, 1, 1]) - cylinder(r=batt_diam/2 + 2*wall + wire_thick, h=wall); - }; + // mounting cylinders + for (x = [-1, 1]) translate([x*(batt_len/2-mounthole_w/2), + batt_diam/2+wall, 0]) { + translate([0, 0, -batt_diam/2-wall-2*pcb_comp_h-pcb_thick]) + mount_cyl(); // front + translate([0, 0, body_top_h]) // rear + scale([1, 1, -1]) + mount_cyl(); + }; }; +module mount_cyl() { + assign(h = mounthole_h+wall) + hull () { + translate([0, -mountcyl_w/2+mounthole_h + wall]) + cylinder(r = mountcyl_w/2, h = mountcyl_h); + assign(l = 2*sqrt(h*(mountcyl_w-h))) + translate([-l/2, 0, mountcyl_h + mountcone_h]) + cube([l, eps, eps]); + }; +}; + module case() { difference() { case_body(); @@ -92,12 +108,17 @@ module case() { -batt_diam/2-pcb_thick - pcb_comp_h]) cube([pcb_len, pcb_width, batt_diam/2 + pcb_thick + pcb_comp_h + eps]); - // hole above the PCB - translate([-pcb_len/2-pcb_xoff-wall-2*outwire_thick, + // hole above the PCB for the outgoing cable + translate([-pcb_len/2-pcb_xoff-2*wall-outcable_w, batt_diam/2-pcb_width, -batt_diam/2-pcb_comp_h]) cube([pcb_len, pcb_width, batt_diam/2 + pcb_comp_h + eps]); + // cable outlet + translate([-pcb_xoff-pcb_len/2-wall-outcable_w, + -pcb_width+batt_diam/2, + -batt_diam/2-outcable_h]) + cube([outcable_w, infty, outcable_h]); // hole under the PCB translate([-pcb_len/2+pcb_groove-pcb_xoff, batt_diam/2-pcb_width + pcb_groove, @@ -122,11 +143,6 @@ module case() { translate([-sw_xoff, 0, 0]) cylinder(r=sw_diam/2, h=infty, $fn=6); }; - // cable outlet - translate([-pcb_xoff-pcb_len/2-outwire_thick-wall, -6, 0]) - rotate([40, 0, 0]) - scale([2, 1, -1]) - cylinder(r=outwire_thick/2, h = infty, $fn=12); // space under the wire holes for battery contacts translate([-batt_len/2-2*wall-cable_sep-eps, 0, 0]) difference() { @@ -174,19 +190,19 @@ module case() { // mounting holes for(x=[-1,1]) scale([x, 1, 1]) - translate([batt_len/2-wall-wire_thick, batt_diam/2+2*wall, -batt_diam/2-pcb_thick-2*pcb_comp_h-wall]) - vert_torus(); - - for (x = [-1, 1]) scale([x, 1, 1]) for (x0 = [0, 10]) - translate([batt_len/2-wall-wire_thick-x0, 0, batt_diam/2+wire_thick/2+wall]) - rotate([-90, 0, 0]) - scale([2,1,1]) cylinder (r=wire_thick/2, h=infty, $fn=16); + translate([batt_len/2-mounthole_w/2, batt_diam/2+wall+mounthole_h/2, -infty/2]) + scale([1, mounthole_h/mounthole_w, 1]) + cylinder(r = mounthole_w/2, h = infty); }; // clip barrier - for (x = [-1, 1]) scale([x, 1, 1]) + for (x = [-1, 1]) scale([x, 1, 1]) hull () { translate([batt_len/2+wall-eps, batt_diam/2-pcb_width+wall/2+lid_sep, -batt_diam/2-pcb_thick-pcb_comp_h + wall + lid_sep]) - cube([cable_sep+eps, pcb_width-2*wall-2*lid_sep, wall]); + cube([wall+eps, pcb_width-2*wall-2*lid_sep, wall]); + translate([batt_len/2+wall-eps, batt_diam/2-pcb_width+3*wall/2+lid_sep, + -batt_diam/2-pcb_thick-pcb_comp_h + 3*wall + lid_sep]) + cube([eps, pcb_width-4*wall-2*lid_sep, eps]); + }; }; module lid_body() { @@ -203,10 +219,10 @@ module lid_body() { cube([wall+cable_sep-lid_sep, batt_diam-2*lid_sep, eps]); rotate([0, 90, 0]) cylinder(r = batt_diam/2-lid_sep, h = wall+cable_sep-lid_sep); - translate([0, batt_diam/2 - pcb_width+lid_sep, + translate([-clip_pretension, batt_diam/2 - pcb_width+lid_sep, batt_diam/2+pcb_comp_h+pcb_thick-lid_sep]) cube([wall+cable_sep-lid_sep, pcb_width-2*lid_sep, eps]); - translate([cable_sep+wall/2, batt_diam/2 - pcb_width + 1.5*wall +lid_sep, + translate([cable_sep+wall/2-clip_pretension, batt_diam/2 - pcb_width + 1.5*wall +lid_sep, batt_diam/2+pcb_comp_h+pcb_thick+wall/2-lid_sep]) cube([wall/2-lid_sep, pcb_width-2*wall-2*lid_sep, eps]); // rear cone @@ -233,22 +249,9 @@ module lid() { translate([-batt_len/2-cable_sep-wall, batt_diam/2-pcb_width+0.5*wall+0.5*lid_sep, batt_diam/2 + pcb_comp_h+pcb_thick-wall-lid_sep]) cube([batt_len + 2*wall + 2* cable_sep, pcb_width-1.5*wall-1.5*lid_sep, eps]); }; - // holes for the mounting clips on the body - for (x = [-1, 1]) scale([x, 1, 1]) hull() { - for (x0 = [0-wall, 10+wall]) - translate([batt_len/2-wall-wire_thick-x0, batt_diam/2-lid_sep+eps, 0]) - rotate([-90, 0, 0]) scale([rear_clip_aspect, 1, 1]) - cylinder(r=batt_diam/2 + 2*wall + wire_thick+lid_sep/rear_clip_aspect, h=wall+lid_sep+eps); - }; }; }; -module vert_torus() { - rotate([0, 90, 0]) - scale([1, 1, 2]) - rotate_extrude() translate([5, 0, 0]) circle(r=wire_thick/2, $fn=16); -}; - if (lowres) { translate([0, 15, 0]) case(); translate([0, -15, 0]) rotate([180, 0, 0]) lid();