Integrated molding safety helmet and method for producing the same

Abstract

The invention provides an integral safety helmet. A precasting hard outer helmet is directly injected with poly-long particles to form a soft inner helmet through heating and pressurizing, and both helmets are integrally formed and closely and firmly jointed into the safety helmet without gap. The making steps of the integral safety helmet comprise: sheathing a formed shell of the hard outer helmet onto an upper mould; matching the upper mould and a lower mould according to the sequence, heating the moulds to soften the outer helmet made of compound materials, pressurizing the outer helmet to discharge redundant resin in the outer helmet made of the compound materials, ejecting, foaming, pressurizing and cooling the poly-long particles in an inner concave cavity of the matched moulds after reducing the temperature and cooling, and then demoulding to make the soft inner helmet integrally formed in the hard outer helmet.

Description

technical field [0001] The invention relates to an integrally formed helmet and a manufacturing method thereof, in particular to a motorcycle or racing car safety helmet and a manufacturing method thereof. Background technique [0002] The structure of safety helmets for motorcycles or racing cars is similar at present, and its outer helmet is a harder shell (mostly composite materials such as PC, ABS, carbon fiber, glass fiber, Kung Fu Dragon). A light and soft material layer is filled inside the hard shell to form the inner helmet in contact with the head. When a collision occurs, the lightweight and soft inner helmet will act as a shock-absorbing cushion. [0003] The manufacturing method of the above-mentioned motorcycle or race car safety helmet is mostly filled with polystyrene inside the outer helmet, that is, the polystyrene particles are formed into a shell-shaped inner helmet by heating and pressing, and then the polystyrene inner helmet is wrapped with electrical...

AI Technical Summary

Problems solved by technology

[0003] The manufacturing method of the above-mentioned motorcycle or race car safety helmet is mostly filled with polystyrene inside the outer helmet, that is, the polystyrene particles are formed into a shell-shaped inner helmet by heating and pressing, and then the polystyrene inner helmet is wrapped with electrical tape. Then cover the hard outer helmet, and cover the inner surface of the styrofoam inner helmet with soft cotton, so that the head does not come into contact with the rough styrofoam, and can protect the styrofoam from damage. The process is complicated, so the production cost is also high

[0004] In addition, since the hard outer helmet and the Styrofoam inner helmet are often joined by hook and loop, gaps and fall-off are likely to occur, resulting in uneven stress distribution during collisions and reducing the effect of protecting the head.

[0005] In addition, when the hard outer helmet is made of composite materials such as carbon fiber, glass fiber, and Kungfu Dragon, synthetic fiber cloth is often used to coat resin for molding, resulting in large gaps between fibers, and the use of resin also increases the overall weight.