Plastic rotary knob hanging device

Abstract

The invention provides a plastic rotary knob hanging device. The device comprises a rigid shell layer which is connected into a helmet body, a sponge layer is further arranged on the inner side of the rigid shell layer, and a tightening belt is embedded in the sponge layer; one end of the tightening belt is fixed to the inner side of the rigid shell layer, the other end of the tightening belt is connected to one end of a toothed belt, and the other end of the toothed belt extends into an arc cavity with an opened end; a gear which is matched with belt teeth on the toothed belt is further arranged in the arc cavity, and the gear is connected with a plastic rotary knob on the bottom of the outer side of a rigid shell through a rotation shaft; a pressure measurement module is further embedded in the sponge layer. The plastic rotary knob hanging device is novel in structure, a helmet is not needed to be taken down, the plastic rotary knob can adjust the matched tightness degree of the helmet and the user head, through the measurement of a pressure sensor, the tightness degree can be controlled, excessively tight or excessively loose wearing is avoided, and the wearing comfort degree is effectively improved.

Description

technical field [0001] The invention relates to the technical field of suspension systems for bulletproof helmets, in particular to a plastic knob suspension. Background technique [0002] A helmet is a device to protect the head, and it is a hat worn by soldiers during training and combat. They are mostly semicircular and mainly consist of three parts: shell, lining and suspension device. Because most of the existing helmets are mass-produced, the size of its internal cavity cannot be suitable for everyone's head shape and head size, so it needs to be adjusted by the suspension device to meet the requirements of different people. And when people adjust the existing helmet by the suspension device, they usually need to take off the helmet, and then make the space between the suspension device of the helmet and the helmet shell meet people's use requirements by partially adjusting the suspension device. Most of the time, it cannot be adjusted at one time, and repeated adjus...

AI Technical Summary

Problems solved by technology

Since most of the existing helmets are mass-produced, the size of the internal cavity cannot be suitable for everyone's head shape and head size, so it needs to be adjusted by the suspension device to meet the requirements of different people.

And when people adjust the existing helmet by the suspension device, they usually need to take off the helmet, and then make the space between the suspension device of the helmet and the helmet shell meet people's use requirements by partially adjusting the suspension device. Most of the time, it cannot be adjusted at one time and needs to be adjusted repeatedly. If the adjustment is too loose, it will not be tight enough to wear and it will easily fall off. If the adjustment is too tight, it will bring discomfort to the wearer.

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