1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
/* A small, arbitrary unit to guard against rounding errors */
eps = 0.1;
alot = 1000;
/* Base PCB size */
pcb_width = 90;
pcb_height = 50;
bottom_thickness = 1.5;
screw_base_dia = 8;
screw_base_h = 5;
screw_nut_dia = 5.4;
screw_nut_h = 6;
screw_hole_dia = 3.5;
screw_hole_h = 6;
module rounded_rect(w, h, r) {
hull(){
translate([w/2-r, h/2-r]) circle(r);
translate([-(w/2-r), h/2-r]) circle(r);
translate([w/2-r, -(h/2-r)]) circle(r);
translate([-(w/2-r), -(h/2-r)]) circle(r);
}
}
module single_screw_base() {
translate([0, 0, bottom_thickness-eps]) linear_extrude(height=screw_base_h+eps) {
circle(d=screw_base_dia);
translate([-screw_base_dia/2, 0]) square([alot, alot]);
translate([0, -screw_base_dia/2]) square([alot, alot]);
}
}
w = pcb_width+10;
h = pcb_height;
l = 10;
r = 10;
t = 5;
b = 5;
s1_pos = [ w/2-l, h/2-b];
s2_pos = [-w/2+r, -h/2+t];
s3_pos = [ w/2-l, -h/2+t];
s4_pos = [-w/2+r, h/2-b];
module screw_bases() {
intersection() {
union() {
translate(s1_pos) single_screw_base();
translate(s2_pos) mirror([1,1,0]) single_screw_base();
translate(s3_pos) mirror([0,1,0]) single_screw_base();
translate(s4_pos) mirror([1,0,0]) single_screw_base();
}
cube([w+eps, h+eps, alot], center=true);
}
}
module single_screw_hole() {
translate([0, 0, bottom_thickness+screw_base_h+eps])
mirror([0,0,1])
union() {
cylinder(h=screw_nut_h+eps, d=screw_nut_dia);
cylinder(h=screw_hole_h+eps, d=screw_hole_dia);
}
}
module screw_holes() {
translate(s1_pos) single_screw_hole();
translate(s2_pos) mirror([1,1,0]) single_screw_hole();
translate(s3_pos) mirror([0,1,0]) single_screw_hole();
translate(s4_pos) mirror([1,0,0]) single_screw_hole();
}
tab_w = 20;
tab_h = 30;
tab_thickness = 3;
tab_hole_d = 9;
module screw_tab() {
difference() {
translate([-tab_h/2, -eps, 0]) cube([tab_h, tab_w+eps, tab_thickness]);
rotate([0, 0, -50]) translate([-alot/2, tab_h*0.6, -eps]) cube([alot, alot, tab_h+2*eps]);
rotate([0, 0, 50]) translate([-alot/2, tab_h*0.6, -eps]) cube([alot, alot, tab_thickness+2*eps]);
translate([0, tab_w/2, -eps]) cylinder(d=tab_hole_d, h=tab_thickness+eps*2);
}
}
wall_height = bottom_thickness + 3;
wall_thickness = 1.5;
cutout_w = 25;
cutout_h = 70;
module carrier() {
union() {
difference() {
translate([0, 0, wall_height/2]) cube([w, h, wall_height], center=true);
translate([0, 0, bottom_thickness + alot/2]) cube([w-wall_thickness*2+eps, h-wall_thickness*2+eps, alot], center=true);
cube([cutout_h, cutout_w, alot], center=true);
}
difference() {
screw_bases();
screw_holes();
}
translate([0, h/2, 0]) screw_tab();
mirror([0,1,0]) translate([0, h/2, 0]) screw_tab();
}
}
carrier($fn=25);
|
