Ballistic plate components and ballistic plates

Abstract

To provide a high-performance bullet-resistant plate member and a bullet-resistant plate with a three-dimensional shape that relatively conforms to the shape of the body and is capable of withstanding a plurality of bullets.SOLUTION: A bullet-resistant plate member 1A is used for a bullet-resistant plate and the bullet-resistant plate member 1A comprises, when viewed along a reference axis RL extending vertically with the head side viewed from the body in an upper direction, the leg side viewed from the body in a lower direction and the arm side viewed from the body in a right-left direction, comprises cylindrical surface plate member 10a, 10b which have the reference axis RL as their axes and from which a portion of a cylindrical surface located at a predetermined distance R1 from the reference axis RL is extracted, and spherical surface plate members 20a, 20b from which a portion of a spherical surface centered at a point on the reference axis RL and located at the same radial distance as the predetermined distance R1 is extracted, and the bullet-resistant plate member has a three-dimensional shape that conforms to the shape of the body by combining the plurality of cylindrical surface plate members 10a, 10b and the plurality of spherical plate members 20a, 20b.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a member for a bulletproof plate and a bulletproof plate.

Background Art

[0002] A bulletproof plate is protective equipment that protects the central part of the body with major organs from high-threat-level bullets flying at a speed faster than that of pistol bullets. In the past, steel plates were used. However, in order to obtain sufficient protective ability with a steel plate, there was a problem that the thickness increased and it became very heavy.

[0003] Therefore, in order to lighten the bulletproof plate, a bulletproof plate made of a composite material using high-strength fibers as a reinforcing material was developed. This bulletproof plate was very light compared to a steel plate and had sufficient protective performance against general bullets with the outside of lead covered with metal. However, in order to stop a bullet with high penetration power in which a penetrator made of a hard substance was embedded inside the bullet, the thickness had to be increased, which not only made it heavy but also bulky, making it difficult to move.

[0004] In order to stop such a bullet with high penetration power, it is necessary to crush the penetrator and disperse the impact, and a high-performance bulletproof plate with a ceramic plate attached to the front surface of the composite material was developed (Japanese Patent No. 3207330 (Patent Document 1)).

[0005] However, as it evolved into a lightweight and high-performance bulletproof plate with a metal plate, a fiber-reinforced composite material, and a fiber-reinforced composite material with a ceramic plate, the degree of freedom in shape was lost. With a steel plate or a composite material, it was relatively easy to make a bulletproof plate of any shape along the body shape if there was a press mold.

[0006] However, since a bulletproof plate using ceramic is affected by the shape of the ceramic, generally, simple-shaped tiles such as a flat plate (one-dimensional) or at most a cylinder (two-dimensional) that is easy to fire and cut the ceramic are used, and it was difficult to form it into a shape along the body shape (Japanese Unexamined Patent Application Publication No. 2010-210201 (Patent Document 2)).

[0007] To solve this problem, a ballistic plate was developed in which a three-dimensional free-form surface similar to the shape of the body was attached to a fiber-reinforced composite material formed by firing a single ceramic plate called a monoplate, and the wearing comfort was greatly improved. However, because a single ceramic plate is used, unlike ballistic plates made by bonding multiple tiles together, the impact of a single bullet easily causes cracks to propagate across the entire ceramic surface, resulting in a problem where the performance against subsequent bullets deteriorates. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Patent No. 3207330 [Patent Document 2] Japanese Patent Publication No. 2010-210201 [Overview of the project] [Problems that the invention aims to solve]

[0009] The purpose of this disclosure is to provide a high-performance bulletproof plate component that has a three-dimensional shape that conforms relatively well to the shape of the body and can withstand multiple bullets. [Means for solving the problem]

[0010] [1]: A ballistic plate component used in a ballistic plate, wherein, when viewed from the torso of the body, with the head side up, the legs side down, and the arms side left and right, the ballistic plate component includes a cylindrical plate component obtained by taking a portion of a cylindrical surface located at a predetermined distance from the above reference axis, and a spherical plate component obtained by taking a portion of a sphere located at the same radius distance as the above predetermined distance, and by combining a plurality of the above cylindrical plate components and a plurality of spherical plate components, the component has a three-dimensional shape that conforms to the shape of the torso.

[0011] [2]: In the ballistic plate member described in [1] above, the left and right end face shapes of the cylindrical plate member and the spherical plate member have cross-sectional shapes cut by upper and lower virtual planes including the reference axis.

[0012] [3]: In the ballistic plate member described in [1] or [2] above, the end face shapes of the upper and lower surfaces of the cylindrical plate member and the spherical plate member have cross-sectional shapes cut by left and right virtual planes extending perpendicular to the reference axis.

[0013] [4]: A ballistic plate comprising a plurality of ballistic plate members and a high-strength fiber-reinforced composite material, wherein the plate members are the ballistic plate members described in any of [1] to [3] above, and a plurality of cylindrical plate members and a plurality of spherical plate members are combined and bonded together with the high-strength fiber-reinforced composite material to have a three-dimensional shape that conforms to the shape of the torso. [Effects of the Invention]

[0014] According to this disclosure, by combining a plurality of cylindrical plate members and a plurality of spherical plate members, it is possible to provide a ballistic plate member and a ballistic plate that have a three-dimensional shape that conforms to the shape of the torso and can withstand multiple bullets with high penetrating power at the same time. [Brief explanation of the drawing]

[0015] [Figure 1] This is a front view of the ballistic plate in Embodiment 1. [Figure 2] This is an end view taken along the line II-II in Figure 1. [Figure 3] This is an end view taken along line III-III in Figure 1. [Figure 4] This is a schematic diagram showing the specific configuration of the ballistic plate in Embodiment 1. [Figure 5] This is an end view taken along the VV line in Figure 4. [Figure 6]It is an end view taken along the line VI-VI in FIG. 4. [Figure 7] It is a partially enlarged schematic view showing the configuration of the cylindrical plate member. [Figure 8] It is an orthographic view showing the configuration of the cylindrical plate member. [Figure 9] It is a partially enlarged schematic view showing the configuration of the spherical plate member. [Figure 10] It is an orthographic view showing the configuration of the spherical plate member. [Figure 11] It is a partially enlarged schematic view of the state in which the cylindrical plate members are combined. [Figure 12] It is a schematic view showing the specific configuration of the bulletproof plate in Embodiment 2. [Figure 13] It is an end view taken along the line XIII-XIII in FIG. 12. [Figure 14] It is an end view taken along the line XIV-XIV in FIG. 12. [Figure 15] It is a schematic view showing the specific configuration of the bulletproof plate in the prior art. [Figure 16] It is an end view taken along the line XVI-XVI in FIG. 15. [Figure 17] It is an end view taken along the line XVII-XVII in FIG. 15. [Figure 18] It is a schematic view showing the specific configuration of the bulletproof plate in Embodiment 3. [Figure 19] It is an end view taken along the line XIX-XIX in FIG. 18. [Figure 20] It is an end view taken along the line XX-XX in FIG. 18. [Figure 21] It is a schematic view showing the specific configuration of the bulletproof plate in Embodiment 4. [Figure 22] It is an end view taken along the line XXII-XXII in FIG. 21. [Figure 23] It is an end view taken along the line XXIII-XXIII in FIG. 21. [Figure 24] It is a schematic view showing the specific configuration of the bulletproof plate in Embodiment 5. [Figure 25]This is an end view taken along the line XXV-XXV in Figure 24. [Figure 26] This is an end view taken along the line XXVI-XXVI in Figure 24. [Figure 27] This is a schematic diagram showing the condition of the ballistic plates attached to a bulletproof vest. [Figure 28] This is a schematic diagram illustrating the effects of the ballistic plate of this embodiment. [Figure 29] This is a schematic diagram illustrating the effects of the ballistic plate, a reference technology. [Modes for carrying out the invention]

[0016] The ballistic plate components and ballistic plates of each embodiment based on this disclosure will be described below with reference to the drawings. In each embodiment described below, when the number, quantity, etc. is mentioned, the scope of the present invention is not necessarily limited to that number, quantity, etc., unless otherwise specified. The same reference numeral will be used for the same part or equivalent part, and redundant descriptions will not be repeated. It is intended from the outset that the configurations in the embodiments will be used in appropriate combinations.

[0017] In the following explanation, when wearing ballistic plates, the wearer's body is used as the reference point. The head is considered the upper direction when viewed from the torso, the legs the lower direction when viewed from the torso, and the arms the left and right directions when viewed from the torso. The line extending vertically is referred to as the reference axis RL. Ballistic protection means preventing bullet penetration by providing shielding. The left-right direction may also be referred to as the row direction, and the up-down direction as the column direction.

[0018] (Embodiment 1: Ballistic plate 1A) Referring to Figures 1 to 3, the schematic configuration of the ballistic plate 1A of the embodiment will be described. The ballistic plate 1A is a ballistic plate for the chest. Figure 1 is a front view of the ballistic plate 1A, Figure 2 is an end view taken along the line II-II in Figure 1, and Figure 3 is an end view taken along the line III-III in Figure 1.

[0019] The ballistic plate 1A basically has its plate members arranged in a 6x5 grid. Specifically, it has 13 first cylindrical plate members 10a, 4 second cylindrical plate members 10b, 6 first spherical plate members 20a, 2 second spherical plate members 20b, 2 third spherical plate members 20c, 2 fourth spherical plate members 21a, 1 fifth spherical plate member 21b, and 1 sixth spherical plate member 21c.

[0020] In Figure 1, the region indicated by R10 represents the region where the cylindrical plate member is arranged, and the regions indicated by R20 and R21 represent the region where the spherical plate member is arranged. In this embodiment, the ballistic plate 1A has three rows of cylindrical plate members, with two rows of spherical plate members arranged above the cylindrical plate members and one row of spherical plate members arranged below the cylindrical plate members.

[0021] In the central row where the cylindrical surface plate members are arranged, five first cylindrical surface plate members 10a of the same shape are arranged, in the uppermost row there are four first cylindrical surface plate members 10a of the same shape, and at both ends on the left and right are second cylindrical surface plate members 10b that are half the width of the first cylindrical surface plate members 10a.

[0022] In region R20 where the upper spherical plate member is located, three first spherical plate members 20a of the same shape are arranged, and second spherical plate members 20b and third spherical plate members 20c of symmetrical shapes are arranged on both sides. In region R21, two fourth spherical plate members 21a of the same shape are arranged, and fifth spherical plate members 21b and sixth spherical plate members 21c of symmetrical shapes are arranged on both sides. In region R20 where the lower spherical plate member is located, three first spherical plate members 20a of the same shape are arranged to be vertically symmetrical, and second spherical plate members 20b and third spherical plate members 20c of symmetrical shapes are arranged on both sides.

[0023] In this way, by arranging the cylindrical and spherical plate members, the ballistic plate 1A has a cylindrical shape in the central region and a shape that slopes inward in the upper and lower regions, as shown in Figures 2 and 3. Furthermore, by arranging the cylindrical and spherical plate members in a staggered pattern, even if hit by a bullet, the damage will be limited to cracks in the plate member, preventing the crack from spreading throughout the entire plate. Moreover, even if the cylindrical and spherical plate members are hit simultaneously, the damage can be contained to a maximum of three plates. The specific shapes of the cylindrical and spherical plate members will be described later.

[0024] The ballistic plate 1A of this disclosure uses multiple cylindrical and spherical plate members, which serve as ballistic plate components, bonded to a fiber-reinforced composite material to form a ballistic plate. When a bullet hits, the ballistic plate components pulverize the bullet and simultaneously disperse and absorb the bullet's energy through destruction. Furthermore, the fiber-reinforced composite material catches the shattered ceramic and bullet fragments, preventing penetration.

[0025] The structure of ballistic plate 1A uses a ballistic plate component on the impact surface side and a fiber-reinforced composite material on the body side, and these two are joined directly with adhesive, or a three-layer structure is formed by using a thin, high-rigidity plate as an intermediate layer and joining each layer with adhesive.

[0026] For cylindrical and spherical plate members used as ballistic plate components, high-purity fine ceramics are preferable. Low-purity ceramics are unsuitable for this disclosure due to their inferior mechanical properties, particularly hardness. Examples of fine ceramics used include aluminum oxide, silicon nitride, silicon carbide, and boron carbide, selected according to the threat posed by the projectile, and are not limited to those specified in this disclosure. Furthermore, methods for manufacturing the ceramic tiles in this disclosure include uniaxial compression molding or cold isostatic molding followed by sintering, molding while sintering by hot pressing, and casting followed by sintering.

[0027] Examples of fine ceramics include, but are not limited to, alumina (purity 90-99.9%), silicon nitride, silicon carbide, and zirconia. Furthermore, one or more of these ceramics may be combined. The physical properties of the ceramics include a Vickers hardness of 1000 kg / mm². 2 The above bending strength is 30 kgf / mm². 2 The above is an elastic modulus of 2.8 × 10⁻⁶. 4 kg / mm 2 The above is preferable.

[0028] Furthermore, the material is not limited to high-purity fine ceramics, as long as it has the same functionality as high-purity fine ceramics.

[0029] The ballistic plate component used in this disclosure requires that the inner surface of the ballistic plate component and the hard plate or fiber-reinforced composite material have the same shape so that no steps or gaps occur when bonded to the hard plate or fiber-reinforced composite material. If there is a difference in the radius of curvature or the center, the thickness will not be uniform, resulting in differences in ballistic performance and creating steps at the bonded boundary. This creates a gap between the bonded inner surface of the ballistic plate component and the hard plate or fiber-reinforced composite material, reducing ballistic performance.

[0030] Therefore, it is desirable that the shape of the outer surface of the rigid plate or fiber-reinforced composite material bonded to the ballistic plate member of this disclosure be the same as the shape of the inner surface of the ballistic plate member. In this sense, the combination of the first cylindrical surface plate member 10a and the second cylindrical surface plate member 10b of this disclosure with the first spherical plate member 20a, the second spherical plate member 20b, the third spherical plate member 20c, the fourth spherical plate member 21a, the fifth spherical plate member 21b, and the sixth spherical plate member 21c makes it possible to design the mold when manufacturing the rigid plate or fiber-reinforced composite material by die press molding, and thus enables high-precision bonding.

[0031] The reinforcing fibers used in the fiber-reinforced composite material bonded to the ballistic plate components should be impact-resistant organic high-strength fibers with a tensile strength of 20 cN / dtex or more and an elastic modulus of 500 cN / dtex or more, such as ultra-high molecular weight polyethylene fibers, polypezazole fibers, fully aromatic polyamide fibers, fully aromatic polyester fibers, etc., but are not particularly limited. If the tensile strength and elastic modulus are below the above values, sufficient impact resistance may not be obtained.

[0032] The reinforcing fibers can take the form of known materials, such as UD laminated composite materials, which are made by stacking sheets of fibers aligned in one direction and fixed with resin at 0 and 90 degrees perpendicularly, or woven laminated composite materials, which are made by processing fibers into a fabric and impregnating it with resin.

[0033] On the other hand, the resins used to impregnate or coat these high-strength fibers include thermosetting resins such as phenolic resins, epoxy resins, polyurethane resins, unsaturated polyester resins, vinyl ester resins, and polyimide resins; thermoplastic resins such as polyethylene, polyolefins such as polypropylene, polyamides, polyesters, polyvinyl acetates, polyether sulfides, polyphenyl sulfides, polyethers, ether ketones, and furthermore, thermoplastic polyurethanes, styrene, butadiene rubber, nitrile rubber, acrylonitrile styrene (AS) resin, neoprene, and other synthetic rubbers or elastomers.

[0034] To obtain fiber-reinforced composite materials, in the case of thermosetting resins, a prepreg is prepared by impregnating or coating high-strength fibers with the thermosetting resin, and then a compression molding method is used by stacking multiple prepregs and heating and pressing them, or a hand lay-up method is used without creating a prepreg. The resin content can be in the range of 5 to 80% (by weight, the same applies below), but it is usually 5 to 50%, preferably 8 to 30%. On the other hand, in the case of thermoplastic resins, a compression molding method is used by alternately stacking multiple sheets of high-strength fibers and thermoplastic resin film or woven fabric, and then heating and pressing them, or a method is used in which the resin is melted in advance and then attached to the high-strength fibers. The content of the thermoplastic resin is the same as that of the thermosetting resin described above.

[0035] As the high-rigidity plate used in the intermediate layer, a highly rigid metal plate, preferably an aluminum alloy or titanium alloy, or a non-organic fiber-reinforced composite material, preferably a glass fiber-reinforced composite material or a carbon fiber composite material, can be used.

[0036] The ballistic plate component of the present invention can be bonded to a high-rigidity plate and a fiber-reinforced composite material using an adhesive such as synthetic rubber, epoxy resin, or urethane resin. Since this involves bonding dissimilar materials, it is preferable to use an elastic adhesive to prevent delamination of the interface due to thermal shock or other factors.

[0037] (Specific shape of ballistic plate 1A) Next, with reference to Figures 4 to 11, the shapes of the first cylindrical plate member 10a, the second cylindrical plate member 10b, the first spherical plate member 20a, the second spherical plate member 20b, the third spherical plate member 20c, the fourth spherical plate member 21a, the fifth spherical plate member 21b, and the sixth spherical plate member 21c used in the ballistic plate 1A will be described.

[0038] Figure 4 is a schematic diagram showing the specific configuration of the ballistic plate 1A, Figure 5 is an end view taken along the line VV in Figure 4, Figure 6 is an end view taken along the line VI-VI in Figure 4, Figure 7 is a partially enlarged schematic diagram showing the configuration of the cylindrical plate member, Figure 8 is a six-view diagram showing the configuration of the cylindrical plate member, Figure 9 is a partially enlarged schematic diagram showing the configuration of the spherical plate member, Figure 10 is a six-view diagram showing the configuration of the spherical plate member, and Figure 11 is a partially enlarged schematic diagram showing the cylindrical plate member and the cylindrical plate member combined.

[0039] In this diagram, the vertically extending line is defined as the reference axis RL, the line that appears when the line is divided along the upper and lower virtual plane VV containing the reference axis RL is defined as the vertical line LL, and the line that appears when the line is divided along the left and right virtual plane VH extending perpendicular to the reference axis RL is defined as the horizontal line LM.

[0040] Figure 4 shows the shape of the ballistic plate 1A shown in Figure 1, using a reference axis RL, vertical line LL, and horizontal line LM. The shapes of the first cylindrical surface plate member 10a and the second cylindrical surface plate member 10b, shown in the region R10, will be explained with reference to Figure 7. In the configuration shown in Figure 4, the basic arrangement of the plate members is shown as an example of arrangement of plate members in 6 rows and 5 columns.

[0041] The overall shape is that of a sphere divided in half and connected by a cylinder, with the top two rows and the bottom row using spherical plate members, and the central three rows using cylindrical plate members. The number of rows and the shape of the plate members used can be arbitrarily determined by the dimensions and shape of the ballistic plates and the dimensions of each plate member. In this disclosure, the plate members are combined with a 1 / 2 offset in each row, but this offset is not necessarily required.

[0042] (Shape of cylindrical plate member) The shapes of the first cylindrical plate member 10a and the second cylindrical plate member 10b will be described with reference to Figures 7 and 8. As shown in the partially enlarged schematic diagram of Figure 7, the surface of the first cylindrical plate member 10a is on the outer surface 12 of the same cylinder as the reference axis RL, and the back surface is on the inner surface 13. The upper surface 14 and the lower surface 15 are on horizontal lines LM that appear when the plate is cut along left and right virtual planes VH that extend perpendicular to the reference axis RL, respectively, and the left surface 16 and the right surface 17 are on vertical lines LL that appear when the plate is cut along upper and lower virtual planes VV that include the reference axis RL, respectively.

[0043] Referring to Figure 8, the shape of the first cylindrical plate member 10a is such that the upper surface 14 and lower surface 15 are fan-shaped, and the left side 16 and right side 17 are rectangular. The outer surface 12 and inner surface 13 are perfect circles with the same reference axis RL, and the difference in radius is equal to the thickness.

[0044] Since the left side 16 and the right side 17 are cut along the upper and lower virtual plane VV which includes the reference axis RL, the end face shapes of the left side 16 and the right side 17 of the first cylindrical plate member 10a are congruent. Since the left and right virtual planes VH are parallel to each other, the upper side 14 and the lower side 15 of the first cylindrical plate member 10a are parallel and congruent. The shape of the second cylindrical plate member 10b is half the width of the first cylindrical plate member 10a.

[0045] Therefore, as shown in Figure 4, in the R10 region, when multiple first cylindrical surface plate members 10a and second cylindrical surface plate members 10b are arranged side by side, the first cylindrical surface plate members 10a and second cylindrical surface plate members 10b can be arranged without gaps, as shown in Figures 5 and 6. The thickness of all cylindrical surface plate members is the same.

[0046] (Shape of the spherical plate member) Next, the shapes of the first spherical plate member 20a, the second spherical plate member 20b, the third spherical plate member 20c, the fourth spherical plate member 21a, the fifth spherical plate member 21b, and the sixth spherical plate member 21c will be described with reference to Figures 9 and 10.

[0047] As shown in Figure 9, the first spherical plate member 20a and the fourth spherical plate member 21a have the same center as the outer sphere 22 and the inner sphere 23, and the difference in radius is equal to the thickness. The front of the planar plate member is located on the outer sphere 22, and the back is located on the inner sphere 23. The bottommost lower surface 20a1 of the first spherical plate member 20a is separated by a left-right virtual plane VH that includes the center of the sphere. The upper surface 20a2 of the first spherical plate member 20a and the lower surface 21a1 of the fourth spherical plate member 21a are separated by a left-right virtual plane VH parallel to the left-right virtual plane VH of the bottommost layer.

[0048] Referring to Figure 10, the shape of the first spherical plate member 20a is such that the upper side 20a2 and lower side 20a1 are fan-shaped, and the left side 27 and right side 28 are rectangular. Since the fan-shaped shapes of the upper side 20a2 and lower side 20a1 are made up of arcs with the same center, the shapes of the upper side of the lower row and the lower side of the upper row are congruent in each row. For example, the shapes of the upper side 20a2 of the first spherical plate member 20a and the lower side 21a1 of the fourth spherical plate member 21a are congruent. The rectangular shapes of the left side 27 and right side 28 are symmetrical, and the rectangular shapes differ between the lower row and the upper row. Therefore, it is not possible to use a common spherical plate member in different rows.

[0049] Therefore, the three first spherical plate members 20a located in the same row above the cylindrical plate member have the same shape. The second spherical plate members 20b and the third spherical plate members 20c, located on the left and right, have symmetrical shapes. Similarly, the two fourth spherical plate members 21a, located above the first spherical plate member 20a, have the same shape. The fifth spherical plate members 21b and the sixth spherical plate members 21c, located on the left and right, have symmetrical shapes. Furthermore, the spherical plate located below the cylindrical plate member is also similar.

[0050] (Combination of cylindrical plate member and spherical plate member) Figure 11 is a partially enlarged schematic diagram showing a combination of a cylindrical plate member and a spherical plate member. The outer surface 12 and inner surface 13 of the region where the cylindrical plate member is provided are perfect circles with the same reference axis RL, and the difference in radius is the same as the thickness. The centers of the outer sphere 22 and inner sphere 23 of the region where the spherical plate member is provided are the same, and the difference in radius is the same as the thickness. Furthermore, the distance from the reference axis RL to the outer surface 12 is the same as the radius of the outer sphere 22, and the distance from the reference axis RL to the inner surface 13 is the same as the radius of the inner sphere 23.

[0051] Therefore, since the first cylindrical plate member 10a and the first spherical plate member 20a are separated by the same upper and lower virtual plane VV, the shapes of the upper surface 14 of the first cylindrical plate member 10a and the lower surface 20a1 of the first spherical plate member 20a are congruent, and they can be superimposed without causing misalignment or unevenness.

[0052] As described above, the ballistic plate 1A in this embodiment uses a cylindrical plate member obtained by taking a portion of a cylindrical surface located at a predetermined distance R1 from the reference axis RL, and a spherical plate member obtained by taking a portion of a sphere located at the same radius distance R1 as a predetermined distance from a point on the reference axis RL. Furthermore, the cylindrical plate member and the spherical plate member are cut along the upper and lower virtual planes VV that include the reference axis RL, and along the left and right virtual planes VH that extend perpendicular to the reference axis RL.

[0053] As a result, by combining the obtained cylindrical plate members and spherical plate members, it becomes possible to provide a ballistic plate having a three-dimensional shape that conforms to the shape of the torso. Furthermore, it becomes possible to use many plate members whose side shapes are congruent or symmetrical, and as a result, it becomes possible to provide ballistic plate members and ballistic plates that can withstand multiple high-penetration bullets without increasing costs.

[0054] (Embodiment 2: Ballistic plate 2) The ballistic plate 2 of this embodiment will be described with reference to Figures 12 to 14. The ballistic plate 2 is a ballistic plate for the chest. Figure 12 is a schematic diagram showing the specific configuration of the ballistic plate 2, Figure 13 is an end view taken along the line XIII-XIII in Figure 12, and Figure 14 is an end view taken along the line XIV-XIV in Figure 12.

[0055] The basic configuration is the same as that of the ballistic plate 1A in the above embodiment. The difference is that, in the spherical plate member, in the case of the ballistic plate 1A in the above embodiment, the spherical plate member was cut along left and right virtual planes VH that extend perpendicular to the reference axis RL, whereas in the ballistic plate 2 of this embodiment, the spherical plate member is cut along a central virtual plane VC that includes the center BO of the sphere.

[0056] As a result, as shown in Figure 12, in the region where cylindrical plate members are provided, a first cylindrical plate member 10a and a second cylindrical plate member 10b, which have the same shape as the ballistic plate 1A, can be used. On the other hand, in the region where spherical plate members are provided, the height of the spherical plate member in the direction of the reference axis RL differs in the left-right direction, so a large variety of spherical plate members (20x, 20y1, 20z1, 20y2, 20z2, 21x1, 21y1, 21x2, 21x2) are required.

[0057] However, in the ballistic plate 2 of this embodiment, by combining multiple cylindrical plate members and multiple spherical plate members, it is possible to provide a ballistic plate having a three-dimensional shape that conforms to the shape of the torso. Furthermore, it is possible to employ many plate members whose side shapes are congruent or symmetrical, and as a result, it is possible to provide ballistic plate members and ballistic plates that can withstand multiple highly penetrating bullets without increasing costs.

[0058] (Reference technology) The ballistic plate 3, a reference technology, will be described with reference to Figures 15 to 17. Figure 15 is a schematic diagram showing the specific configuration of the ballistic plate 3, Figure 16 is an end view taken along the line XVI-XVI in Figure 15, and Figure 17 is an end view taken along the line XVII-XVII in Figure 15.

[0059] In this reference technology, compared to the ballistic plate 1A of Embodiment 1 described above, the ballistic plate 3 does not have a spherical plate member and is composed only of cylindrical plate members. For the top two rows of the ballistic plate 3, a first cylindrical trapezoidal plate member 10e and a second cylindrical trapezoidal plate member 10f are used to narrow the width of the ballistic plate 1A. The first cylindrical trapezoidal plate member 10e and the second cylindrical trapezoidal plate member 10f have symmetrical shapes.

[0060] In the case of this ballistic plate 3, as is clear from Figures 16 and 17, it has a two-dimensional shape that conforms to the shape of the torso.

[0061] (Embodiment 3: Ballistic plate 1B) The ballistic plate 1B of this embodiment will be described with reference to Figures 18 to 20. The ballistic plate 1B is a ballistic plate for the chest. Figure 18 is a schematic diagram showing the specific configuration of the ballistic plate 1B, Figure 19 is an end view taken along the line XIX-XIX in Figure 18, and Figure 20 is an end view taken along the line XX-XX in Figure 18.

[0062] The basic configuration is the same as that of the ballistic plate 1A in the above embodiment, with 6 rows and 5 columns. The ballistic plate 1A had 3 rows of cylindrical plate members, 2 rows of spherical plate members on the upper side, and 1 row of spherical plate members on the lower side. The ballistic plate 1B in this embodiment has a plate member arrangement of 6 rows and 5 columns, with 4 rows of cylindrical plate members, 2 rows of spherical plate members on the upper side, and no spherical plate members on the lower side.

[0063] Even with a ballistic plate 1B having this configuration, it is possible to obtain the same effects and advantages as the ballistic plate 1A of the above embodiment.

[0064] (Embodiment 4: Ballistic plate 1C) The ballistic plate 1C of this embodiment will be described with reference to Figures 21 to 23. The ballistic plate 1C is a ballistic plate for the back. Figure 21 is a schematic diagram showing the specific configuration of the ballistic plate 1C, Figure 22 is an end view taken along the line XXII-XXII in Figure 21, and Figure 23 is an end view taken along the line XXIII-XXIII in Figure 21.

[0065] The basic configuration is the same as the ballistic plate 1A of the above embodiment, with 6 rows and 5 columns. However, since this ballistic plate 1C is for the back, it has four rows of cylindrical plate members, one row of spherical plate members on the upper side, and one row of spherical plate members on the lower side. Furthermore, on the lower side, seventh spherical plate members 20f, which are half the width of the first spherical plate member 20a, are used on the left and right sides of the spherical plate member.

[0066] Even with a ballistic plate 1C having this configuration, it is possible to obtain the same effects and advantages as the ballistic plate 1A of the above embodiment.

[0067] (Embodiment 5: Ballistic plate 1D) The ballistic plate 1D of this embodiment will be described with reference to Figures 24 to 26. The ballistic plate 1D is a ballistic plate for the back. Figure 24 is a schematic diagram showing the specific configuration of the ballistic plate 1D, Figure 25 is an end view taken along the line XXV-XXV in Figure 24, and Figure 26 is an end view taken along the line XXVI-XXVI in Figure 24.

[0068] The basic configuration is the same as that of the ballistic plate 1A in the above embodiment, but the ballistic plate 1D has plate members arranged in 7 rows and 5 columns. Since this ballistic plate 1D is for the back, it has a configuration in which five rows of cylindrical plate members are provided and two rows of spherical plate members are provided on the upper side. Furthermore, in the lower row of cylindrical plate members, triangular third cylindrical plate members 10m and fourth cylindrical plate members 10n are provided on the left and right sides. The third cylindrical plate member 10m and the fourth cylindrical plate member 10n have symmetrical shapes.

[0069] Even with a ballistic plate 1D having this configuration, it is possible to obtain the same effects and advantages as the ballistic plate 1A of the above embodiment.

[0070] As described above, the ballistic plate in each of the above embodiments has the desired shape circle This can be obtained by arbitrarily combining a cylindrical plate member and a spherical plate member. The combination method is as follows: Spherical plate member / circle Cylindrical plate member / Spherical plate member, or, Spherical plate member / circle There are two types of cylindrical plate members. Furthermore, as shown in Figure 9, by adjusting the width appropriately for each row, a smooth sphere can also be formed by combining spherical plate members.

[0071] (With ballistic plate 1A and ballistic plate 1D attached) The mounting state of ballistic plates 1A and 1D will be described with reference to Figures 27 to 29. Figure 27 is a schematic diagram showing the state of the ballistic plates mounted on the bulletproof vest 100, Figure 28 is a schematic diagram showing the effect of the ballistic plates in this embodiment, and Figure 29 is a schematic diagram showing the effect of the ballistic plates in the reference technology.

[0072] Figure 27 shows the state in which the chest ballistic plate 1A and the back ballistic plate 1D are attached to the outside of the bulletproof vest 100. In Figure 28, when the ballistic plates in this embodiment are attached, the ballistic plates are positioned on the outside of the bulletproof vest 100, so there is a space between them and the body. In particular, for both the chest and back of the wearer 200, the conformity to the body shape is greatly improved by using a spherical plate member at least on the upper part of the cylindrical plate member.

[0073] On the other hand, as shown in Figure 29, in the case of a ballistic plate composed only of cylindrical plate members as shown as reference technology, the plates are arranged in a straight line vertically on the chest and back of the wearer 200, and the upper end in particular is farther from the body (the space indicated by X in the figure). Therefore, when crawling, for example, both the upper end of the chest and the upper end of the back are prone to getting caught on obstacles, forcing the wearer to act in a posture that is significantly different from when not wearing the plate, which may hinder mobility.

[0074] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the present invention is indicated by the claims rather than by the foregoing description, and all modifications within the meaning and scope equivalent to the claims are intended. [Explanation of Symbols]

[0075] 10a First cylindrical plate member, 10b Second cylindrical plate member, 10e First cylindrical trapezoidal plate member, 10f Second cylindrical trapezoidal plate member, 10m Third cylindrical plate member, 10n Fourth cylindrical plate member, 12 Outer surface, 13 Inner surface, 14, 20a2 Upper side, 15, 20a1, 21a1 Lower side, 16, 27 Left side, 17, 28 Right side, 20a First spherical plate member, 20b Second spherical plate member, 20c Third spherical plate member, 20f Seventh spherical plate member, 21a Fourth spherical plate member, 21b Fifth spherical plate member, 21c Sixth spherical plate member, 22 Outer sphere, 23 Inner sphere, 100 Bulletproof vest, 200 Wearer, BO Center, LL Vertical line, LM Horizontal line, R1 The specified distance, RL is the reference axis, VC is the virtual center plane, VH is the left-right virtual plane, and VV is the up-down virtual plane.

Claims

1. A component for use in bulletproof plates, In the torso shape of the body, when viewed from the perspective of the torso, with the head side upwards, the legs side downwards, and the arms side horizontally, and considering the reference axis extending vertically, The ballistic plate component is, A cylindrical plate member is formed by taking a portion of a cylindrical surface located at a predetermined distance from the aforementioned reference axis, A spherical plate member obtained by taking a portion of a sphere located at the same radius distance as the predetermined distance, centered on one point on the aforementioned reference axis, Includes, The structure includes a spherical plate arrangement region on the upper side in which a plurality of the spherical plate members are arranged in the vertical and horizontal directions, and a cylindrical plate arrangement region below the spherical plate arrangement region in which a plurality of the cylindrical plate members are arranged in the vertical and horizontal directions, thereby forming a three-dimensional shape that conforms to the shape of the body. Components for bulletproof plates.

2. The left and right end face shapes of the cylindrical plate member and the spherical plate member have cross-sectional shapes obtained by cutting them with upper and lower virtual planes including the reference axis. The bulletproof plate component according to claim 1.

3. The end face shapes of the upper and lower surfaces of the cylindrical plate member and the spherical plate member have cross-sectional shapes cut by left and right virtual planes extending perpendicular to the reference axis. The bulletproof plate member according to claim 1.

4. A ballistic plate comprising multiple ballistic plate components and a high-strength fiber-reinforced composite material, The ballistic plate member is the ballistic plate member according to any one of claims 1 to 3, By combining multiple cylindrical plate members and multiple spherical plate members and bonding them with the high-strength fiber-reinforced composite material, a three-dimensional shape conforming to the shape of the body is formed. Ballistic plate.

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