The Self-Powered Watch

The Self-Powered WatchElijah DominguezMatthew De La HozChristopher LeeJair Torres

History of the WristwatchThe wristwatch evolved from the pocket watch in the late 1800s and early 1900sOriginally designed as a strategic military tool used in World War I to properly time their strikes against enemiesSoldiers found it difficult to constantly open their pocket watches during battle, thus the idea of an easy access watch attached to the wrist was thought ofPeople felt the concept of a watch on a bracelet attached to your wrist was implausible at firstWristwatches eventually became an everyday fashion accessory for men and womenEvolved to digital, self-powered, and even smart wristwatches over many years

Animation

The Watch Case, Belts, and BucketsThe Watch Case securely fastens and protects the inner mechanism of the self-powered watchThe Watch Case part was built by initially extruding the square shaped base. Then the dial had to be extruded and duplicated with a circular sketch patternThere were four different belt parts created, which were assembled accordingly to allow the watch to wrap around your wristEach belt part was built in a similar fashion by extruding the base sketch and filleting the edgesThe Bucket Links required several loft features and needed precise angles at certain portions to allow for smoother movements when fully assembledThe Bucket Links also contain a special design on the bottom portion of the bucket (shown in the animation), courtesy of one of our group members

The MechanismMovement made by company in Switzerland called ETAETA is Switzerlands largest watch movement maker and makes the most influential designs for watch mechanismsEach gear must be assembled precisely to accurately rotate gears, which in turn will rotate the hour, minute, and second hand properlyMany Gear Mates were used to assemble the mechanism, and each dimension for all gears needed to be precise so that the gear mates had the proper teeth ratios between one another

Exploded View of Mechanism

Summarizing RemarksThe sparkle of our project would have to be the movement mechanism. Each piece, regardless of size, required extreme precision in order to make the watch function appropriately.A lot of time and effort was put in by each member to help create the parts required for the mechanism assemblyWithout the mechanism there would be no way to tell time on our watchIf we had more experience with SolidWorks along with a better model found online for the construction of the mechanism, we would have been able to create a more detailed wristwatchIf more time for the project was also given, details such as diamond engravings in the bezel and a built in chronograph could have been added to the design of the watch