Inspiration and Planning
The model is based off a spray bottle that I had on hand. I also referenced existing images of similar spray bottle exploded views and videos of spray bottles being deconstructed.
The assembly is made up of ten separate parts. I created nine of these parts myself, and the Full-Cone Plastic Spray Nozzle was downloaded from McMasters. I measured the parts of an existing spray bottle to obtain a rough idea of what the dimensions of each part would be, but I customized these dimensions based on my personal aesthetic preferences.
A significant challenge was modeling the threads of the Internal Holder to fit the threads on the McMasters nozzle. I also created matching threads for the Bottle and Twist Collar. Another challenging part was the Trigger. I changed the angles and dimensions of the Trigger multiple times in order to make sure the part fit with the Internal Casing throughout its entire range of motion.
Parts
I utilized several different types of mates in order to constrain the parts in relation to each other, allowing only for the movement of the Trigger, Spring, and Piston. The Bottle and Twist Collar are joined with a Screw mate to mimic realistic movement. The effects of this mate can be seen in the animated exploding view.
Assembly
The purpose of the animation is to show the collapsed view, exploded view, and movement of the Trigger, Spring, and Piston. Animating the Spring was tricky, as I needed to ensure that the Spring would rebuild properly in every frame, constrained by the Inner Casing on one end and adjusting to the position of the Piston on the other end.
Animation
