Book Holder¶
Features¶
General¶
- Transferable base
- Clamped to wheelchair
- On a stand
- Pivot arms
Motion¶
- Swivel base 360° revolution
- Lower arm 180° rotation
- Shaft 360° rotation
- Upper arm 360° rotation
- Holder 180° hinge
Reference¶
I used a book holder with a pivot arm for reference. The design holds other objects, and the range of motion demonstrates versatility.
Measurements¶
Motion¶
Final Rendering¶
Components¶
Clamp¶
The clamp is designed as a bracket with a clamp distance of 2.8 inches, accommodating a standard armrest.
The screw uses a proportionally large knob to account for mobile impairments. One can use the back slot to strengthen their hold if necessary.
The base rotates 360 degrees, which allows multidirectional adjustment depending on placement. If desired, one can remove the screw entirely and use one of equal thickness for attachment to a rolling stand.
Joints¶
The joints rotate various parts of the stand, and the range of motion allows for comfortable adjustment. The pairs rotate in sync as a rigid group for either set.
Base Joints¶
Base joints rotate 180 degrees to fully expand and compress the joint without interfering with the clamp.
Shaft¶
Shaft connects the pairs of joints and rotates 360 degrees, which can fold the top joint and holder completely inwards for storage.
Top Joints¶
Top joints connect and rotate the holder 360 degrees, letting one read at as steep or flat an angle as they please.
Holder¶
The surface area fits standard paper dimensions. One can prop a book onto the base with the addition of larger slots to insert pages and stabilize their pages vertically. One can grab the smaller slots to adjust the angle while reading. For larger books or devices, the corner circles (made of rubber or similar) anchor the sides.
