Backpack Umbrella Pops Up for Rain Emergencies

If you have some warning about rain when commuting to your job or class, you might wear a jacket, or keep your umbrella at the ready. For storms that come up all of a sudden, Emiel, “The Practical Engineer” has a novel solution — an umbrella that pops up in an instant after pulling its ripcord.

The design is built around a small backpack, which conceals a shaped piece of wood that holds the mechanical bits. Mechanics include a pair of springs, as well as some fairly heavy bearings and an axle, that flip the umbrella on an external pivoting arm up and over the user. A pneumatic valve is also connected to the assembly not to power it, but to keep its speed under control.

A pin normally holds the umbrella down, attached to a cord that the Emiel can pull to release when needed for rain protection — or perhaps heat relief during a hot summer day. Parts for the project are cut on a band saw and lathe, and 3D-printed, but one of the more unique techniques used is shown around 4:30 in the video below where he loops a cord into itself to form a sort of slipknot.

Backpack Umbrella Pops Up for Rain Emergencies was originally published in Hackster Blog on Medium, where people are continuing the conversation by highlighting and responding to this story.

Original article: Backpack Umbrella Pops Up for Rain Emergencies
Author: Jeremy S. Cook