Lightweight bulletproof helmet
By setting six-petal and four-petal bulletproof helmet cut sheets at intervals, adjusting the number and layout of the cut sheets, the problem of excessive weight of existing bulletproof helmets is solved, and effective weight reduction and bulletproof performance are achieved.
Patent Information
- Application Number
- CN202420834857.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-22
AI Technical Summary
While improving bulletproof performance, existing bulletproof helmets are difficult to reduce weight, resulting in greater pressure on the head when worn.
The six-petal bulletproof helmet cut sheet and four-petal bulletproof helmet cut sheet are used to adjust the number and layout of the cut sheets, thereby reducing the area of the cut sheets, thereby reducing the weight of the finished helmet.
Without affecting bulletproof performance, the helmet weight is reduced by 40-50g, the pressure during wearing is reduced, and the performance indicators of the helmet body are improved by increasing the cutting level.
Smart Images
Figure CN222688991U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a lightweight bulletproof helmet, belonging to the technical field of bulletproof helmets. Background Art
[0002] Bulletproof helmets can absorb the impact energy of bullets and effectively reduce the casualties of soldiers on the battlefield. With the development and upgrading of weapons, not only the protective performance of bulletproof helmets is required to be improved, but also the weight of helmets is required to be reduced to reduce the amount of cargo that a soldier has to carry when performing tasks. Bulletproof helmets made of ordinary aramid prepreg are mostly made of Figure 1 The six-petal panel pattern shown is limited by the weight of the helmet shell and the surface density of the prepreg. Once it is finalized, it is difficult to further improve the bulletproof performance of the bulletproof helmet by increasing the number of panels. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a lightweight bulletproof helmet which reduces the weight of the bulletproof helmet, so as to reduce the pressure on the head when a person wears the helmet.
[0004] In order to achieve the above purpose, the utility model adopts the following scheme:
[0005] The utility model comprises six-petal bulletproof helmet pieces and four-petal bulletproof helmet pieces which are arranged at intervals, wherein the six-petal bulletproof helmet pieces are 15 to 17 pieces, and the four-petal bulletproof helmet pieces are 3 to 4 pieces; the axes of adjacent petals of the four-petal bulletproof helmet pieces are perpendicular, and two petals on the same axis are spindle-shaped.
[0006] The utility model comprises three four-petal bulletproof helmet cutting pieces; one four-petal bulletproof helmet cutting piece is arranged between the fourth and fifth six-petal bulletproof helmet cutting pieces, between the eighth and ninth six-petal bulletproof helmet cutting pieces, and between the twelfth and thirteenth six-petal bulletproof helmet cutting pieces in order from outside to inside.
[0007] The utility model comprises four four-petal bulletproof helmet cutting pieces; from outside to inside, one four-petal bulletproof helmet cutting piece is arranged between the third and fourth six-petal bulletproof helmet cutting pieces, between the sixth and seventh six-petal bulletproof helmet cutting pieces, between the ninth and tenth six-petal bulletproof helmet cutting pieces, and between the twelfth and thirteenth six-petal bulletproof helmet cutting pieces.
[0008] The six-petal bulletproof helmet cutting pieces and the four-petal bulletproof helmet cutting pieces of the utility model are aramid prepreg or ultra-high molecular weight polyethylene non-weft cloth.
[0009] The surface density of the ultra-high molecular weight polyethylene non-woven fabric of the utility model is 75-200g / m 2, fiber content is 82-93%; aramid prepreg surface density is 425-473g / m 2 , the fiber content is 80-95%.
[0010] The positive effects of the utility model are as follows: the gap between the two petal ends of the four-petal bulletproof helmet cut piece of the utility model is relatively large, and the area of the cut piece is reduced without affecting the bulletproof performance, thereby reducing the weight of the finished helmet by 40 to 50 g and reducing the wearing weight of the helmet; when the weight of the helmet remains unchanged, the reduced weight is partially converted into at least one layer of six-petal cut pieces, and the addition of this layer can effectively improve the performance index of the helmet body; when laying the pieces, a layer of four-petal bulletproof helmet cut pieces is arranged between two six-petal bulletproof helmet cut pieces, which can prevent the four petals from deviating during pre-pressing and forming, prevent creases from appearing on the helmet after forming, and enhance the local bulletproof function of the helmet. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the structure of a 6-petal cutting piece of the utility model;
[0012] Figure 2 This is a schematic diagram of the structure of the four-petal cutting piece of the utility model. DETAILED DESCRIPTION
[0013] Embodiment 1:
[0014] As attached Figure 1 , 2 As shown, the utility model comprises six-petal bulletproof helmet pieces 1 and four-petal bulletproof helmet pieces 2 arranged at intervals, the six-petal bulletproof helmet pieces 1 are 15 pieces, and the four-petal bulletproof helmet pieces 2 are 3 pieces; the axes of adjacent petals of the four-petal bulletproof helmet pieces 2 are perpendicular, and the two petals on the same axis are spindle-shaped; the six-petal bulletproof helmet pieces 1 and the four-petal bulletproof helmet pieces 2 are aramid prepreg, and the surface density of the aramid prepreg is 473g / m 2 , fiber content is 95%;
[0015] Laying pieces: from outside to inside, a four-petal bulletproof helmet piece 2 is arranged between the 4th and 5th six-petal bulletproof helmet pieces 1, between the 8th and 9th six-petal bulletproof helmet pieces 1, and between the 12th and 13th six-petal bulletproof helmet pieces 1; after all the pieces are arranged and laid out in order, all the pieces are bonded according to the shape of the helmet with a hot air gun, and then pre-formed at 100° C. and 10 MPa for 10 minutes, taken out and trimmed, and then put into a hot pressing molding machine, and pressed at 158° C. and 20 MPa for 20 minutes to obtain a bulletproof helmet.
[0016] Embodiment 2:
[0017] As attached Figure 1 , 2As shown, the utility model comprises six-petal bulletproof helmet pieces 1 and four-petal bulletproof helmet pieces 2 arranged at intervals, the six-petal bulletproof helmet pieces 1 are 17 pieces, the four-petal bulletproof helmet pieces 2 are 4 pieces; the adjacent petal axes of the four-petal bulletproof helmet pieces 2 are perpendicular, and the two petals on the same axis are spindle-shaped. The six-petal bulletproof helmet pieces 1 and the four-petal bulletproof helmet pieces 2 are ultra-high molecular weight polyethylene non-woven fabrics; the surface density of the ultra-high molecular weight polyethylene non-woven fabric is 200g / m 2 , fiber content is 93%;
[0018] When laying the pieces: from outside to inside, a four-petal bulletproof helmet piece 2 is arranged between the third and fourth six-petal bulletproof helmet pieces 1, between the seventh and eighth six-petal bulletproof helmet pieces 1, between the tenth and eleventh six-petal bulletproof helmet pieces 1, and between the fourteenth and fifteenth six-petal bulletproof helmet pieces 1; after all the pieces are arranged in order, all the pieces are laid out according to the shape of the helmet using a hot air gun, and then pre-formed by pressing at 100° C. and 10 MPa for 10 minutes, taken out and trimmed, and then put into a hot pressing molding machine, pressed at 128° C. and 20 MPa for 20 minutes to obtain a bulletproof helmet.
[0019] The utility model of the four-petal bulletproof helmet cut piece of the above-mentioned embodiment has a large gap between the two petal ends, which reduces the area of the cut piece without affecting the bulletproof performance, thereby reducing the weight of the finished helmet by 40-50g and reducing the wearing weight of the helmet; when the weight of the helmet remains unchanged, the reduced weight is converted into at least one layer of six-petal cut pieces, so that the performance indicators of the helmet body can be effectively improved; when laying the pieces, a layer of four-petal bulletproof helmet cut pieces is arranged between two six-petal bulletproof helmet cut pieces, which can prevent the four petals from deviating during pre-pressing and forming, and prevent creases from appearing on the helmet after forming; and the local bulletproof function of the helmet is enhanced.
Claims
1. A lightweight bulletproof helmet, characterized in that: The invention comprises six-petal bulletproof helmet pieces (1) and four-petal bulletproof helmet pieces (2) which are arranged at intervals, wherein the six-petal bulletproof helmet pieces (1) are 15 to 17 pieces, and the four-petal bulletproof helmet pieces (2) are 3 to 4 pieces. The axes of adjacent petals of the four-petal bulletproof helmet cut piece (2) are perpendicular, and two petals on the same axis are spindle-shaped.
2. A lightweight bulletproof helmet according to claim 1, characterized in that: The four-petal-shaped bulletproof helmet cut pieces (2) consist of three pieces; From the outside to the inside, a four-petal bulletproof helmet cut piece (2) is arranged between the fourth and fifth six-petal bulletproof helmet cut pieces (1), between the eighth and ninth six-petal bulletproof helmet cut pieces (1), and between the twelfth and thirteenth six-petal bulletproof helmet cut pieces (1).
3. A lightweight bulletproof helmet according to claim 1, characterized in that: The four-petal-shaped bulletproof helmet cut pieces (2) are four pieces; From the outside to the inside, a four-petal bulletproof helmet cut piece (2) is arranged between the third and fourth six-petal bulletproof helmet cut pieces (1), between the sixth and seventh six-petal bulletproof helmet cut pieces (1), between the ninth and tenth six-petal bulletproof helmet cut pieces (1), and between the twelfth and thirteenth six-petal bulletproof helmet cut pieces (1).
4. A lightweight bulletproof helmet according to any one of claims 1 to 3, characterized in that: The six-petal bulletproof helmet cutting piece (1) and the four-petal bulletproof helmet cutting piece (2) are aramid prepreg or ultra-high molecular weight polyethylene non-woven fabric.
5. A lightweight bulletproof helmet according to claim 4, characterized in that: The surface density of ultra-high molecular weight polyethylene non-woven fabric is 75-200g / m 2 , fiber content is 82-93%; aramid prepreg surface density is 425-473g / m 2 , the fiber content is 80-95%.