| blob | 651ceeb20261e1f73f54f049e88f5f42d12419ec |
1 //measures are in millimeters
2 AY=23.0;
3 AX=19.0;
4 BY=18.0;
5 BLX=14.5;
6 EZ=11.0;
7 FLZ=14.0;
8 H=12.75;
9 CYL_OFF_Z=70;
10 CYL_DEPTH=0.1;
11 CLIP_X=2;
12 CLIP_Y=0.75;
13 CLIP_H=3*CLIP_Y;
14 CORNER_RADIUS=2;
15 INNER_GUARD_RADIUS=6.5;
16 OUTER_GUARD_RADIUS=7.5;
17 BLIND_SHAFT_OUTER_DIAMETER=4.85
18 BLIND_SHAFT_INNER_DIAMETER=1.85
19 SHAFT_X=8.0;
20 SHAFT_Y=6.0;
21 SHAFT_LENGTH=9.0;
22 SHAFT_THICKNESS=1.0;
23 SHAFT_CLIP_WIDTH=3.0;
24 SHAFT_CLIP_THICKNESS=0.75;
25 SHAFT_CLIP_HEIGHT=2.0;
26 SHAFT_CLIP_SLOPE_DEPTH=1.0;
27 SHAFT_CLIP_ANGLE=45;
28 SHAFT_END_CUTOUT_HEIGHT=1.5;
29 SHAFT_LARGE_SLOT_TO_BASE=1.5;
30 SHAFT_SMALL_SLOT_LENGTH=7.25;
31 SHAFT_SMALL_SLOT_WIDTH=2.5;
32 SHAFT_SPRING_HOLDER_WIDTH=3.0;
33 SHAFT_SPRING_HOLDER_TO_BASE=4.0;
34 SHAFT_SPRING_GUIDE_WIDTH=1.0;
35 SHAFT_SPRING_GUIDE_SIDES_HEIGHT=3.5;
36 STRUT_THICKNESS=1;
37 STRUT_HEIGHT=3;
38 STRUT_SPACING=1;
39 SHAFT_SPRING_HOLDER_NIPPLE_HEIGHT=1;
40 SHAFT_SPRING_HOLDER_NIPPLE_RADIUS=0.75;
42 SHAFT_SMALL_SLOT_BEVEL=0.5;
44 WallThickness=0.75;
45 ClipWidth=2.2;
46 ClipDepth=0.75;
48 //ascfront=FLZ/sqrt(pow(FLZ,2)-pow(H,2));
49 //asctop=(H-EZ)/sqrt(pow(BLX,2)-pow((H-EZ),2));
51 alpha=asin((H-EZ)/BLX);
52 beta=asin(H/FLZ);
53 gamma=90-asin((0.5*(AY-BY))/EZ);
55 module keycap(){
56 scale([AX/(AX+2*CORNER_RADIUS),AY/(AY+2*CORNER_RADIUS),1])
57 translate([CORNER_RADIUS,CORNER_RADIUS,0.01])
58 minkowski(){
59 difference(){
60 cube([AX,AY,H]);
61 rotate(a=gamma,v=[1,0,0]) cube([100,100,100]);
62 translate([0,AY,0]) rotate(a=90-gamma,v=[1,0,0]) cube([100,100,100]);
63 translate([0,0,EZ]) rotate(a=-alpha,v=[0,1,0]) translate([-50,0,0]) cube([100,100,100]);
64 translate([0,AY/2,EZ+CYL_OFF_Z]) rotate(a=90-alpha,v=[0,1,0]) cylinder(h=100,center=true,r=CYL_OFF_Z+CYL_DEPTH,$fa=1);
65 translate([AX,0,0]) rotate(a=beta-90,v=[0,1,0]) cube([100,100,100]);
66 }
67 cylinder(h=0.01,r=CORNER_RADIUS,$fs=0.6);
68 //rotate(a=90,v=[1,0,0]) cylinder(h=0.01,r=1,$fs=0.3);
69 }
70 }
72 module blind_shaft(){
74 }
76 module shaft(){
77 spring_guide_length = SHAFT_X-SHAFT_THICKNESS-SHAFT_SPRING_HOLDER_WIDTH;
78 spring_guide_height = SHAFT_SPRING_HOLDER_TO_BASE-SHAFT_LARGE_SLOT_TO_BASE;
79 translate([0,0,-SHAFT_LENGTH]) difference(){
80 union(){
81 difference(){
82 union(){
83 difference(){
84 intersection(){
85 cylinder(h=100,r=SHAFT_X/2,$fs=0.3);
86 translate([-SHAFT_X/2,-SHAFT_Y/2,0]) cube([SHAFT_X,SHAFT_Y,100]);
87 }
88 intersection(){
89 cylinder(h=100,r=SHAFT_X/2-SHAFT_THICKNESS,$fs=0.3);
90 translate([-SHAFT_X/2+SHAFT_THICKNESS,-SHAFT_Y/2+SHAFT_THICKNESS,0]) cube([SHAFT_X-2*SHAFT_THICKNESS,SHAFT_Y-2*SHAFT_THICKNESS,100]);
91 }
92 }
93 translate([-SHAFT_CLIP_WIDTH/2, -SHAFT_CLIP_THICKNESS-SHAFT_Y/2,0]) cube([SHAFT_CLIP_WIDTH/2, SHAFT_CLIP_THICKNESS,SHAFT_CLIP_HEIGHT]);
94 translate([-SHAFT_CLIP_WIDTH/2, SHAFT_Y/2,0]) cube([SHAFT_CLIP_WIDTH/2, SHAFT_CLIP_THICKNESS,SHAFT_CLIP_HEIGHT]);
95 }
96 translate([-SHAFT_CLIP_WIDTH/2, -SHAFT_CLIP_THICKNESS-SHAFT_Y/2+SHAFT_CLIP_SLOPE_DEPTH,0]) rotate(a=90+SHAFT_CLIP_ANGLE,v=[1,0,0]) cube([SHAFT_CLIP_WIDTH/2,100,100]);
97 translate([-SHAFT_CLIP_WIDTH/2, SHAFT_Y/2+SHAFT_CLIP_THICKNESS-SHAFT_CLIP_SLOPE_DEPTH,0]) mirror([0,1,0]) rotate(a=90+SHAFT_CLIP_ANGLE,v=[1,0,0]) cube([SHAFT_CLIP_WIDTH/2,100,100]);
98 translate([0,-50,0]) cube([100,100,SHAFT_END_CUTOUT_HEIGHT]);
99 translate([0,-SHAFT_Y/2+SHAFT_THICKNESS,0]) cube([100,SHAFT_Y-SHAFT_THICKNESS*2,SHAFT_LENGTH+SHAFT_LARGE_SLOT_TO_BASE]);
100 //small slot cutout
101 translate([0,-SHAFT_SMALL_SLOT_WIDTH/2,0]){
102 mirror([1,0,0]) cube([100,SHAFT_SMALL_SLOT_WIDTH,SHAFT_SMALL_SLOT_LENGTH-0.5*SHAFT_SMALL_SLOT_WIDTH]);
103 }
104 //small slot cutout
105 translate([0,0,SHAFT_SMALL_SLOT_LENGTH-0.5*SHAFT_SMALL_SLOT_WIDTH]) rotate(a=-90,v=[0,1,0]) cylinder(r=SHAFT_SMALL_SLOT_WIDTH/2,h=SHAFT_X/2,$fs=0.3);
106 }
107 //spring holder
108 translate([-SHAFT_X/2+SHAFT_SPRING_HOLDER_WIDTH/2+SHAFT_THICKNESS,0,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE]) cylinder(r=SHAFT_SPRING_HOLDER_WIDTH/2,h=100,$fs=0.3);
109 intersection(){
110 translate([-SHAFT_X/2+SHAFT_SPRING_HOLDER_WIDTH/2+SHAFT_THICKNESS,0,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE-SHAFT_SPRING_HOLDER_NIPPLE_HEIGHT]) cylinder(r=SHAFT_SPRING_HOLDER_NIPPLE_RADIUS,h=100,$fs=0.3);
111 translate([0,0,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE-SHAFT_SPRING_HOLDER_NIPPLE_HEIGHT*1.5]) rotate(v=[0,1,0], a=atan(SHAFT_SPRING_HOLDER_NIPPLE_HEIGHT/(SHAFT_SPRING_HOLDER_NIPPLE_RADIUS*2))) translate([-50,-50,0]) cube(100,100,100);
112 }
113 intersection(){
114 difference(){
115 translate([SHAFT_X/2-SHAFT_THICKNESS,-0.5*SHAFT_SPRING_GUIDE_WIDTH,SHAFT_LENGTH+SHAFT_LARGE_SLOT_TO_BASE]) mirror([1,0,0]) cube([100,SHAFT_SPRING_GUIDE_WIDTH,100]);
116 translate([-SHAFT_X/2+SHAFT_SPRING_HOLDER_WIDTH+SHAFT_THICKNESS,-0.5*SHAFT_SPRING_GUIDE_WIDTH,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE])
117 mirror([1,0,0]) rotate(a=90-asin(spring_guide_height/spring_guide_length),v=[0,1,0]) mirror([0,0,1]) translate([0,0,-50]) cube([100,SHAFT_SPRING_GUIDE_WIDTH,100]);
118 }
119 cube([SHAFT_X-SHAFT_THICKNESS,SHAFT_Y,100],center=true);
120 }
121 //side spring guides
122 difference(){
123 translate([-SHAFT_X/2+SHAFT_THICKNESS+(SHAFT_SPRING_HOLDER_WIDTH-SHAFT_SPRING_GUIDE_WIDTH)/2,-SHAFT_Y/2+SHAFT_THICKNESS,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE-SHAFT_SPRING_GUIDE_SIDES_HEIGHT]) cube([SHAFT_SPRING_GUIDE_WIDTH,SHAFT_Y-2*SHAFT_THICKNESS,EZ-SHAFT_SPRING_HOLDER_TO_BASE+SHAFT_SPRING_GUIDE_SIDES_HEIGHT]);
124 translate([-SHAFT_X/2+SHAFT_THICKNESS+(SHAFT_SPRING_HOLDER_WIDTH-SHAFT_SPRING_GUIDE_WIDTH)/2,-SHAFT_SPRING_HOLDER_WIDTH/2,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE]) rotate(a=-asin(((SHAFT_Y-SHAFT_SPRING_HOLDER_WIDTH)/2-SHAFT_THICKNESS)/SHAFT_SPRING_GUIDE_SIDES_HEIGHT),v=[1,0,0]) translate([0,0,-50]) cube([SHAFT_SPRING_GUIDE_WIDTH,100,100]);
125 }
126 difference(){
127 translate([-SHAFT_X/2+SHAFT_THICKNESS+(SHAFT_SPRING_HOLDER_WIDTH-SHAFT_SPRING_GUIDE_WIDTH)/2,-SHAFT_Y/2+SHAFT_THICKNESS,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE-SHAFT_SPRING_GUIDE_SIDES_HEIGHT]) cube([SHAFT_SPRING_GUIDE_WIDTH,SHAFT_Y-2*SHAFT_THICKNESS,EZ-SHAFT_SPRING_HOLDER_TO_BASE+SHAFT_SPRING_GUIDE_SIDES_HEIGHT]);
128 mirror([0,1,0]) translate([-SHAFT_X/2+SHAFT_THICKNESS+(SHAFT_SPRING_HOLDER_WIDTH-SHAFT_SPRING_GUIDE_WIDTH)/2,-SHAFT_SPRING_HOLDER_WIDTH/2,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE]) rotate(a=-asin(((SHAFT_Y-SHAFT_SPRING_HOLDER_WIDTH)/2-SHAFT_THICKNESS)/SHAFT_SPRING_GUIDE_SIDES_HEIGHT),v=[1,0,0]) translate([0,0,-50]) cube([SHAFT_SPRING_GUIDE_WIDTH,100,100]);
129 }
130 }
131 translate([-SHAFT_X/2+SHAFT_SPRING_HOLDER_WIDTH+SHAFT_THICKNESS,-SHAFT_Y/2+SHAFT_THICKNESS,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE]) mirror([1,0,0]) rotate(a=90-asin(spring_guide_height/spring_guide_length),v=[0,1,0]) mirror([0,0,1]) cube([SHAFT_THICKNESS,SHAFT_Y-2*SHAFT_THICKNESS,100]);
132 }
133 }
135 module guard(){
136 difference(){
137 union(){
138 cube([STRUT_THICKNESS,100,100],center=true);
139 cube([100,STRUT_THICKNESS,100],center=true);
140 cylinder(r=OUTER_GUARD_RADIUS,h=100);
141 }
142 difference(){
143 cylinder(r=INNER_GUARD_RADIUS,h=100);
144 translate([-STRUT_SPACING/2-STRUT_THICKNESS,-50,EZ-STRUT_HEIGHT]) cube([STRUT_THICKNESS,100,STRUT_HEIGHT]);
145 translate([STRUT_SPACING/2,-50,EZ-STRUT_HEIGHT]) cube([STRUT_THICKNESS,100,STRUT_HEIGHT]);
146 translate([-50,-STRUT_SPACING/2-STRUT_THICKNESS,EZ-STRUT_HEIGHT]) cube([100,STRUT_THICKNESS,STRUT_HEIGHT]);
147 translate([-50,STRUT_SPACING/2,EZ-STRUT_HEIGHT]) cube([100,STRUT_THICKNESS,STRUT_HEIGHT]);
148 }
149 }
150 }
152 difference(){
153 keycap();
154 difference(){
155 translate([WallThickness, WallThickness, 0]) scale(v=[1-2*WallThickness/AX, 1-2*WallThickness/AY, 1-WallThickness/H]) keycap();
156 translate([OUTER_GUARD_RADIUS+WallThickness,AY/2]) guard();
157 }
158 }
159 intersection(){
160 union(){
161 translate([WallThickness, WallThickness, 0]) scale(v=[1-2*WallThickness/AX, 1-2*WallThickness/AY, 1-WallThickness/H]) keycap();
162 translate([-50,-50,-99.9]) cube([100,100,100]);
163 }
164 translate([OUTER_GUARD_RADIUS+WallThickness,AY/2]) union(){
165 shaft();
166 }
167 }