Design Rationale
The door assembly is designed to attach the Shirt Horn to the door so that it can be elevated to a
height above Elsa’s head. Therefore, when Elsa pulls down on the rope connected to the pulleys,
the claw releases the shirt onto her head. As the remainder of the device could not stand on its
own due to its bulkiness and asymmetry, it was necessary to either attach the device to an
external fixed object to to built a full frame to support the device. Mary explained during the user
observation summary that Elsa’s bed did not have a bed frame to attach our device to (see
Appendix D: User Observation Summary). With that in mind and after considering the desire for
portability, we decided to design a section which would fit over a door.
This section of the design was loosely modeled on a basketball hoop system which fits over a
door.
Claws
Design Concept
The claws (see Figure 10) are two pairs of 5inch tall Lshaped plastic attachments which hold
the shirt in place. They are attached to the central support. The dynamic (outer) claw is