More comfortable face shield

thingiverse

Wearing a face shield at the mouth gives me a sense of openness, and it doesn't get damp. There's no tightening on my head. Since it attaches to the mouth, it excels at preventing splashes from escaping. The head model used for installation instructions is a work by lehthanis: "Full Size Human Head Model for resting headsets on." URL: https://www.thingiverse.com/thing:758647 Special thanks to Mr. File overview: msc_006.FCStd (mouth_shield_C-ver. 6th Trial) - FreeCAD format file msc_006.stl - Mesh format file of frame body only msc_006_pc.stl - Model with built-in parts to prevent peeling pin_c_type.FCStd - Pin for connection (C type) - FreeCAD format file pin_c_type.stl - Pin for connecting (C-type) mesh format file pin.zip - Pins with different length A more detailed overview: Emergency declarations have been canceled in Japan. However, I'm still required to wear a face shield with a mask at work. The "Inexpensive Face Shield" distributed at the workplace secures the shield in front of my face by wrapping sponge foam on my forehead. This construction of the face shield is very hot and makes me feel uncomfortable. In addition, the rubber used in the mounting feels very tight depending on the size of my head (my head being especially large). So, I made a brace that's as open as possible and can be worn without using rubber. The one I referred to was a shield supported by a "chin." However, many "chin" supports have small shields because their main purpose is to prevent splashes from the wearer's mouth. It's not possible to protect my eyes and sides of my face from external splashes like this time. And when only the shield was enlarged, it shook and wasn't stable. Therefore, we designed the frame so that it can be mounted stably even with a large shield by enlarging the frame and supporting it under my mouth and temporomandibular joint. We adopted a method of suspending with a string to prevent it from falling off, but the length of the string is suitable for all head sizes with proper tightening by using a cord stopper. The problem is that the straps are designed to pass over my ears, so some hairstyles can't support the weight of the frame and slip off. You can make a ring with rubber and put it on your ears. I haven't tried. I used an OHP sheet for the shield part. It was an unwanted item waiting to be thrown away at my workplace. It's a waste product. A5 size was left, so I chose this size, but if you can prepare a large sheet, it's better to use it. The shield and frame are fixed with pins. By sandwiching the sponge foam and optimizing the length of the pin, you'll get just the right friction, and you can adjust the inclination of the shield. If you use a large shield (such as A4 size), it may not have enough friction, but in that case, consider fixing it using the hole at the end of the frame. It will be more comfortable to wear sponge foam between the frame and face. For the pin output, it's recommended that the outer wall be increased to output instead of increasing the infill.