Chair Design as of Week 6

Chair Design as of Week 6

     As the page title says, this is the Pro/Engineering model of what the chair that our group is designing will somewhat look like when completed. In Figure 1 below, there is a photograph of what the side view of the finalized version of the chair will look like, and Figure 2 is the view of the chair from the front.

                               Figure 1: Side view of the chair.               Figure 2: Front view of the chair.

     As expected there were a couple changes in the overall design of the chair considering the previous design was in the beginning of the design process. There have been a couple changes. Some things that are immediately noticeable is the linear actuator is acting in parallel with the hydraulic system that came with the chair, instead of replacing the hydraulic system with the linear actuator. Another thing is the gear has been taken out since the group is now not focusing on the left and right rotations of the chair. Figure 3 below is a close up of the Pro/Engineering model.

     

Figure 3: Close up of the chair.

     At point 1 is the seat bottom where the patient will be comfortably sitting on. Number 2 is the "lazy Susan." This was implemented in order to protect the integrity of the linear actuator, number 4. Originally the chair wasn't design to swivel. However, if the patient were to unknowingly try to swivel, the torque on the linear actuator could cause it to break. With the lazy Susan, the top of the chair can swivel while the bottom part of the lazy Susan stays stationary. Number 3 is the hydraulic system that came with the chair, and number 5 is base of the chair.