Open mask wearing device
A mask and device technology, applied in the field of open mask wearers, can solve the problems of not being able to achieve the purpose of protection, unfavorable long-term wearing, wearing too loose, etc., and achieve the effect of improving comfort and effectiveness of protection
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[0009] figure 1 is the rear view of the open mask wearer, "01" is the bracket, "02" is the rack 1, "03" is the rack 2, "04" is the adjustment gear, "05" is the adjustment knob, and "06" is the clip Buckle 1; Bracket "01" is a flexible U-shaped ring. The outer surface of the bracket has two upper and lower sliding grooves with limit card edges. Flexible rack 1 "02" and flexible rack 2 "03" are installed In the two chutes, the length of a single rack is greater than half of the bracket but less than the overall length, the teeth of the upper rack face downward, the teeth of the lower rack face upward, and there is an adjusting gear "04" installed in the middle of the bracket ”, the adjustment gear is connected with an adjustment knob “05”, the adjustment gear is tightly engaged with the upper and lower flexible racks, and the close engagement is used to increase the friction between the bracket, the flexible rack, and the adjustment gear, so as ...
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