Inner protector for human body protection

Abstract

The durability of the protective parts portion of a human body protection inner protector, which consists of a protective sheet and multiple protective parts sewn onto the protective sheet, is improved. [Solution] The protective part of the inner protector for protecting the human body consists of a protective sheet and a plurality of protective parts sewn to the protective sheet in a predetermined arrangement and overlapping state, comprising a protective material made of a thin metal plate of a predetermined shape, two pieces of cloth material of the same shape but larger by predetermined dimensions than the protective material, and two heat-welded sheets of the same shape and dimensions as the two pieces of cloth material, wherein the entire protective material is welded and integrated between the two pieces of cloth material via the two heat-welded sheets.

Description

Technical Field

[0001] The present invention relates to the structure of an inner protector for body protection.

Background Art

[0002] The inventors of the present application have hitherto used a plurality of flexible circular metal thin plates excellent in body protection performance such as stab resistance, cut resistance, and impact resistance as protection materials, and overlapped the plate portions of these plurality of protection materials with each other in the vertical, horizontal, or diagonal directions with a predetermined width using a plurality of protection sheets (cross materials). By arranging them in a polymerized state, an inner protector for body protection has been developed that can reliably protect the body while allowing the body to freely deform during work and exercise (see, for example, Patent Document 1).

[0003] In the case of this inner protector, a plurality of protection materials are arranged on each of a plurality of (at least three) protection sheets, and in a state where the plurality of protection sheets are overlapped with each other, each plate portion of the plurality of protection materials arranged on each protection sheet overlaps with each other with a predetermined width so as to cover the entire required body protector surface without gaps. It is configured by being attached in an arrangement relationship.

[0004] The plurality of protection sheets for arranging a plurality of protection materials in a predetermined layout each consist of two upper and lower cross materials. A plurality of protection materials are arranged in a predetermined layout between these two upper and lower cross materials, and the whole is integrally sealed in a bag shape by heat welding each of them through a heat welding sheet. The plurality of protection sheets composed of two upper and lower cross materials in which a plurality of protection materials are integrally sealed in this way are further overlapped with each other to form an inner plate for body protection. In the polymerized state, each plate portion of the plurality of protection materials arranged on each protection sheet overlaps with each other with a predetermined width to cover the entire required body protector surface without gaps.

[0005] Furthermore, predetermined exterior components are placed on both the upper and lower sides of this inner plate, and by joining their outer edges, a predetermined human body protection protector is finally formed according to each primary application. In terms of applications, it can be used in various human body protection protectors that take advantage of the aforementioned puncture resistance, cut resistance, and impact resistance, such as the water jet work protector described in Patent Document 1, as well as security protectors. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2020-79463 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] However, in the case of the conventional inner protector described above, the protective sheet itself, which is an integrated protective material consisting of multiple thin metal plates placed between two upper and lower cross materials, is a large-diameter protective part that is almost the same size as the outer material, and the inner plate is formed by overlapping multiple (at least three) of these protective sheets. In order to maintain a secure overlapping state of each protective material, the fabric material that forms the protective sheet is a high-strength, non-stretchable cross material such as polyester fiber of a predetermined thickness. Moreover, the inner plate is fixed in a multi-layered state (at least five layers) by sewing these multiple protective sheets together with the upper and lower outer materials.

[0008] Therefore, even though the protective material itself, made of thin metal sheets, is flexible and can be bent, and provides a good fit, the need for at least three protective sheets (three sets) made by overlapping two cross materials inevitably makes the inner plate portion considerably thicker. Furthermore, even though bending deformation is possible between each protective material and between the protective materials themselves, the rigidity of the overall structure is high because these three high-strength protective sheets are sewn together with the upper and lower outer components, and the three protective sheets (three sets) after being integrated cannot be deformed as freely as they could individually. As a result, there are limitations to the degree of freedom of body deformation during work and exercise, and to the improvement of the fit. In addition, the weight is considerably increased.

[0009] Therefore, the inventors of this invention have developed an inner plate for human protection that makes the thickness of the inner plate portion as thin as possible and allows for greater freedom of deformation of the inner plate as a whole. This is achieved by forming the protective material portion, which is made of a thin metal plate, into individual, independent protective parts, sewing each of these protective parts to a protective sheet made of a single piece of cloth material in a predetermined arrangement and overlapping state, and by appropriately setting the arrangement and overlapping state of each protective part during sewing, so that the entire necessary body protector surface can be covered without gaps using at least one or two protective sheets. In this way, the thickness of the inner plate portion is made as thin as possible, and greater freedom of deformation is possible not only between the protective parts but also for the inner plate as a whole.

[0010] In this case, each of the above-mentioned protective parts can be made of, for example, a protective material of a predetermined shape made of a flexible thin metal plate, and two cross materials of the same shape as the protective material but with a predetermined outer diameter larger than the protective material, with the protective material interposed between the two cross materials and the outer edges sewn together to form a bag, thereby positioning the protective material to move freely inside, or heat-sealing only the outer edges of the protective material between the two cross materials to form a bag using a heat-sealing sheet, thereby similarly positioning the protective material to move freely inside.

[0011] With this configuration, the protective material, consisting of a thin metal plate enclosed between two layers of fabric, is maintained in place while being able to move somewhat freely between the two layers of fabric. This allows for greater individual and mutual deformation, and because the protective sheet itself is made of a single piece of fabric, even if an outer layer is sewn on afterward, the thickness of the inner plate is extremely thin and its rigidity is greatly reduced, resulting in almost no restriction on body movement during work or exercise. Therefore, the wearing comfort is greatly improved. In addition, the weight is also significantly reduced, making it sufficiently light.

[0012] However, with this configuration, it was found that the protective material, made of a thin metal plate, moves freely between the two cross materials of the bag structure in accordance with the body's movements during work and exercise, resulting in constant relative friction between the two cross materials, which could cause the cross materials to tear over time. This tendency is even stronger in the case of protective material made of a thin metal plate, due to the sharp edges around its outer perimeter.

[0013] The present invention was made to solve these problems, and aims to provide an inner protector for human body protection in which two heat-weldable sheets of the same shape and outer diameter as the metal sheet protector are placed between two cross materials of the same shape but with an outer diameter predetermined to be larger than the metal sheet protector, and the upper and lower sides of the metal sheet protector are superimposed and heat-welded through the two heat-weldable sheets, thereby welding the metal sheet into the two cross materials and preventing relative friction between the metal sheet and the two cross materials. [Means for solving the problem]

[0014] The present invention is configured to solve the above-mentioned problems by providing the following effective problem-solving means.

[0015] (1) Means for solving the problem of the invention of claim 1 The means for solving the problem of this invention is a protective sheet and a material sewn to the protective sheet in a predetermined arrangement and predetermined overlapping state. , each independent of the others An inner protector for human body protection consisting of multiple protective parts, each of which is made of a thin, hexagonal metal plate. 1 sheet The protective material consists of a protective material, two hexagonal cross materials with a larger outer diameter than the protective material, and two heat-welded sheets with the same hexagonal shape and outer diameter as the two cross materials. The entire protective material is welded and integrated between the two cross materials via the two heat-welded sheets, forming the outer edge of the protective part without protective material on the inside where the stitching takes place.

[0016] First, the inner protector for human body protection in the means for solving the problem of the invention of claim 1 comprises a protective sheet and a protective material sewn to the protective sheet in a predetermined arrangement and predetermined overlapping state. , each independent of the others It is composed of multiple protective parts.

[0017] In other words, in this configuration, the protective material portion that provides a protective function against the human body is formed by multiple individually independent protective parts. These protective parts are sewn to a protective sheet, for example, made of a single piece of cloth, in a predetermined arrangement and overlapping state. By appropriately setting the arrangement and overlapping state of each protective part during sewing, it is possible to cover the entire required body protector surface without gaps using at least one or two protective sheets.

[0018] Therefore, as mentioned earlier, the thickness of the inner plate can be made as thin as possible, allowing for greater freedom of deformation not only between the protective parts but also of the inner plate as a whole. At the same time, weight reduction can be achieved.

[0019] Furthermore, in the case of the means for solving the problem of the invention of claim 1, in the same configuration , each independent of the others Each of the multiple protective parts consists of a thin, hexagonal metal plate. 1 sheet The protective material consists of a protective material, two hexagonal cross materials with a larger outer diameter than the protective material, and two heat-sealable sheets with the same hexagonal shape and outer diameter as the two cross materials. The entire protective material is welded and integrated between the two cross materials via the two heat-sealable sheets, forming the outer edge of the protective part where there is no protective material on the inside of the sewing area.

[0020] With this configuration, it consists of hexagonal metal sheets. 1 sheet The entire protective material, made of a thin metal plate of the same hexagonal shape, is enclosed between two cross materials of the same hexagonal shape, each having an outer diameter larger than the protective material by a predetermined dimension. The entire structure and outer circumference of the two cross materials and the cross materials are then welded together via two heat-sealable sheets of the same hexagonal shape and outer diameter. , each independent of the others Multiple protective parts are formed.

[0021] And each of the plurality of protective parts is made of a hexagonal thin metal plate enclosed inside 1 sheet The protective material, for example, overlaps appropriately with a predetermined width in each of the vertical, horizontal, and diagonal directions, and a single protective sheet in which the plurality of protective parts are sewn in a predetermined arrangement and a predetermined overlapping state, or two protective sheets in which the plurality of protective parts are sewn in a predetermined arrangement and a predetermined overlapping state are combined. According to the set arrangement relationship and overlapping state, the entire required body protector surface can be covered without gaps

[0022] As a result, according to this configuration, each of the plurality of protective parts in which the protective material made of a thin metal plate is enclosed and integrally covered can slide relatively while being maintained at a predetermined position, so that deformation can be freely performed alone and between each other. Moreover, since only one or two fabrics are sufficient for the protective sheet itself, even if an exterior material is sewn later, the thickness of the inner plate is extremely thin and the rigidity is greatly reduced, so the restraining force on the movement of the body during work and exercise is almost eliminated. Therefore, the wearing feeling is greatly improved. Also, the weight is significantly reduced and it becomes sufficiently light

[0023] Moreover, in the case of this configuration, each of the above protective parts is made of the above thin metal plate 1 sheet Between two cross members of the same hexagonal shape having an outer diameter dimension larger than a predetermined dimension by a predetermined dimension than the protective material, two heat-sealing sheets of the same hexagonal shape and the same outer diameter dimension as those cross members are arranged, and the upper and lower sides of the protective material made of the above thin metal plate are overlapped and heat-sealed through the two heat-sealing sheets 1 sheet By heat-sealing the upper and lower sides of the protective material made of the above thin metal plate 1 sheet The upper and lower two cross members are integrally welded to the entire upper and lower surfaces of the protective material made of the above thin metal plate, and the upper and lower two cross members cover and integrate the protective material made of the above thin metal plate 1 sheet That is, the protective material made of the thin metal plate is integrally covered

[0024] Therefore, even if various deformations occur in each of the above protective part portions along with the movement of the body during work and exercise, between the two cross members, the protective material made of a thin metal plate 1 sheet The protective material itself does not move independently, and no relative friction occurs between it and the two layers of cross material. Therefore, the risk of the cross material tearing, as discovered during the development process described above, is completely eliminated.

[0025] Furthermore, between the two cross materials via the two heat-sealing sheets mentioned above 1 sheet The welding of the protective material is performed in a manner that forms an outer edge of the protective part without protective material on the inside, and this formed outer edge of the protective part without protective material on the inside is formed at the sewing portion of the protective part to the protective sheet.

[0026] In the above configuration, the protective material consisting of the thin metal plate is made of stainless steel, such as SUS304, which is thin, flexible, resilient, and has high strength. The two upper and lower cross materials or protective sheets are made of synthetic fiber fabrics such as polyester fiber, which has high strength and good surface sliding properties.

[0027] Furthermore, in the same configuration, Mutually independent It consists of multiple protective parts. 1 sheet Each thin metal sheet is made up of hexagonal metal sheets, and the two cross materials, which have a larger outer diameter than the protective material, are also made up of hexagonal cross materials, and the two heat-sealable sheets are also formed in the same hexagonal shape as the two cross materials.

[0028] In this configuration, unlike conventional cases (Patent Document 1 above) where the protective material is circular, the six sides (outer edges) of the protective material, which consists of thin metal plates located inside each protective part, overlap appropriately in the up, down, left, right, and diagonal directions with an equal width (parallel overlap width) of a honeycomb structure. This ensures that the entire required body protector surface is uniformly and reliably covered, whether the protective sheet is placed and overlapped by itself or by a combination of two protective sheets.

[0029] Furthermore, by utilizing the corners (tops) of the cross material used to cover the protective material, which has a larger outer diameter than the protective material itself, ultrasonic welding and sewing sections for temporary fastening to the protective sheet can be provided. Therefore, positioning and sewing of the protective parts to the protective sheet becomes easier.

[0030] (2) Means for solving the problem of the invention of claim 2 The means for solving the problem of this invention is that, in the configuration of the means for solving the problem of the invention of claim 1, the multiple protective parts are not sewn to the protective sheet along the entire outer edge of the protective parts that do not have protective material on the inside, but rather, considering the required amount of movement, required overlap, and relative amount of movement in the overlapping parts of each of the multiple protective parts that are adjacent and overlap in the left and right, up and down and diagonally directions, only the desired parts are sewn to the desired position.

[0031] In this configuration, the desired amount of stitching in that area precisely defines the required mounting position and state of each of the multiple protective parts. This effectively ensures the necessary range of motion for each protective part, the free overlapping of adjacent plate materials, and the relative movement in the overlapping areas, resulting in more freedom and appropriate protection of the body surface. Consequently, the wearing comfort is also improved.

[0032] Furthermore, when sewing, a portion of the same part can be temporarily fixed in place by welding it using an ultrasonic welding method to serve as a positioning point, and then only the designated portion needs to be sewn, thus simplifying the sewing process.

[0033] (3) Means for solving the problem of the invention of claim 3 The means for solving the problem of this invention is that, in the configuration of the means for solving the problem of the invention of claim 1 or 2, two sets of small holes corresponding to each other are provided at each sewing position of the protective part on the protective sheet side and at the corresponding sewing position on the outer edge of each protective part, and each protective part is positioned at each sewing position of the protective part on the protective sheet side by concentrically corresponding these two sets of small holes.

[0034] This configuration allows multiple protective parts to be precisely positioned at their respective corresponding sewing locations on the protective sheet. As a result, precise stitching becomes possible.

[0035] Furthermore, the two sets of small holes on the left and right sides of the protective part can also function as guidelines to indicate the sewing direction when sewing multiple protective parts, which are stacked in a row and overlapped horizontally, onto the protective sheet from left to right or right to left. This allows for more precise sewing.

[0036] (4) Means for solving the problem of the invention of claim 4 The solution to the problem of this invention is that, in the configuration of the solution to the problem of the invention of claim 3, ultrasonic welding portions are provided at least two locations on the outer edge of each protective part that does not have a protective material on the inside, and by welding these ultrasonic welding portions to the protective sheet, the protective parts positioned by two sets of small holes are temporarily fixed to the protective sheet.

[0037] With this configuration, by aligning the two sets of small holes concentrically, the protective part, which is precisely positioned relative to the sewing position of the protective part on the protective sheet side, is securely fixed in place so as not to move.

[0038] Therefore, the subsequent sewing process becomes more accurate and easier. [Effects of the Invention]

[0039] As a result of the above, according to the invention of this application, an inner protector for human body protection that is highly flexible and can be freely deformed as a whole, while enabling secure body protection without gaps, can be provided at an extremely low cost using only at least one or two protective sheets and a minimum number of protective parts corresponding to the shape and dimensions of the protective material for the one or two protective sheets.Therefore, compared to the conventional configuration that requires three sets of two-layer protective sheets (a configuration of six protective sheet materials), the overall thickness is much thinner, its rigidity is greatly reduced, and its weight is reduced.

[0040] Furthermore, the thin metal plate within the protective part is securely welded and integrated between the two pieces of cross material via a heat-sealing sheet, ensuring a firm fixation. This prevents tearing of the fabric due to relative friction during deformation of the inner protector during work or movement, resulting in extremely high durability. [Brief explanation of the drawing]

[0041] [Figure 1] This is a plan view showing the configuration of the first protective part in an inner protector for human body protection according to an embodiment of the invention of this application. [Figure 2] This is a plan view showing the configuration of the second to N protective parts in an inner protector for human body protection according to an embodiment of the invention of this application. [Figure 3] These are cross-sectional views of the CC line section in Figures 1 and 2, showing the common configuration of the first, second to Nth protective parts. [Figure 4] Figures 1 and 2 show cross-sectional views of the CC line cut section before heat welding of the heat-welded sheet, illustrating the common configuration of the first, second to Nth protective parts. [Figure 5] This is a plan view showing the configuration of the first inner protector, in which one side of each of the first, second to N protective parts is sequentially overlapped by a predetermined width from right to left, set in the designated position on the first protective sheet which serves as the base fabric, temporarily fixed, and then sequentially sewn in place to form a three-row structure. [Figure 6] This is a cross-sectional view of the DD line section in Figure 5, showing the configuration of the first inner protector. [Figure 7] This is a plan view showing the configuration of the second inner protector, in which one side of each of the first, second to N protective parts described above is sequentially overlapped by a predetermined width from right to left, set in the designated position on the second protective sheet which serves as the base fabric, temporarily fixed, and then sequentially sewn in place to form a three-row structure. [Figure 8] This is a cross-sectional view of the EE line cutting section in Figure 7, showing the configuration of the second inner protector. [Figure 9] These are plan views (perspective plan views) showing the overlap between the protective parts of the first inner protector and the protective parts of the second inner protector in the final inner protector structure, in which the second inner protector shown in Figures 7 and 8 is superimposed on the first inner protector shown in Figures 5 and 6, shifted to a predetermined position. [Figure 10] This is a plan view showing the overlap between the protective material inside the protective part of the first inner protector and the protective material inside the protective part of the second inner protector in the state shown in Figure 9. [Modes for carrying out the invention]

[0042] The embodiments of the invention described herein will now be explained in detail with reference to Figures 1 to 10 of the attached drawings mentioned above.

[0043] <Inner protector composition> First, Figures 5 and 6 show the configuration of the first inner protector (lower side) of the inner protector for human body protection according to an embodiment of the invention of this application, and Figures 7 and 8 show the configuration of the second inner protector (upper side) of the inner protector for human body protection according to an embodiment of the invention of this application.

[0044] In other words, the inner protector for human body protection according to the embodiment of the invention of this application is constructed by overlapping and integrating two sets of inner protectors, the first and the second, vertically.

[0045] The first inner protector consists of a first protective sheet (base fabric) 1a made of a predetermined fiber fabric (for example, polyester fabric), and the first protective sheet 1a, with its sides overlapping by a predetermined width W2 from right to left on the surface. , each independent of the others It is composed of multiple protective parts A, A·· numbered from the 1st to the Nth. The number of protective parts A, A·· numbered from the 1st to the Nth is determined according to the required width in the left-right direction of the first protective sheet 1a, and the number of rows in the up-down direction is determined according to the required width in the up-down direction of the same first protective sheet 1a. In the illustrated examples in Figures 5 and 6, for the sake of simplicity, a sample configuration is shown with 6 pieces in the left-right direction (N=6) and 3 rows in the up-down direction (A,A··, A,A··, A,A··).

[0046] And in the case of the first inner protector in Figures 5 and 6, each protective part A, A... is Correct It is constructed in a hexagonal (honeycomb) shape.

[0047] this Mutually independent Multiple hexagonal protective parts A, A·· are each made of a thin hexagonal metal plate (for example, stainless steel plate such as SUS304), as shown in Figures 1 to 4. 1 sheet The protective material 2 consists of two heat-sealable sheets (heat-seal materials) 3,3, which are the same shape as the protective material 2 but have a predetermined larger outer diameter than the protective material 2, and two cloth materials (for example, polyester fabric) 4,4, which are the same shape and have the same outer diameter as the heat-sealable sheets 3,3, forming a sewn portion 6 and creating an outer edge portion 4a of the protective part that does not have the protective material 2 on the inside, and is made of the thin metal plate described above. 1 sheetThe protective material 2 is superimposed between the two upper and lower cross materials 4, 4 via the heat-sealing sheets 3, 3 (see Figure 4), and the entire structure, including the central and outer parts, is heated to fuse and integrate it, resulting in the thin metal plate described above. 1 sheet The protective material 2 is formed in a covering structure in which it is completely superimposed and integrated between the two upper and lower cross materials 4, 4 (see Figure 3).

[0048] In this case, the above consists of a thin metal plate. 1 sheet Protective material 2 and 2 Heat-sealable sheet 3,3, 2 The cross materials 4,4 are superimposed and welded together such that their respective centers (the intersections where the three diagonals meet) coincide with the center (same) of the protective material 2 made of the thin metal plate, and each of their six corners coincides in the same diagonal direction (see Figures 1 and 2).

[0049] As a result, on the outer circumference of each of the hexagonal protective parts A, A·· described above, an edge (ear) 4a is formed on the inside of a predetermined width W1 corresponding to the difference in outer diameter dimensions between the protective material 2 made of the thin metal plate and the two upper and lower cross materials 4, 4, without the protective material 2. Furthermore, on the left and right sides of the base of the triangular edge 4a located at the top (vertex) of one of the six corners of each of the hexagonal protective parts A, A·· in the drawings of Figures 1 and 2, two sets of small holes 6a, 6a are provided at predetermined intervals for positioning relative to the first protective sheet 1a during sewing. On the other hand, the first protective sheet 1a has two sets of small holes (not shown) of the same diameter and spacing corresponding to the two sets of small holes 6a, 6a used for positioning, at the sewing positions of the protective parts A, A··. By aligning the centers of the two sets of small holes 6a, 6a concentrically with respect to these two sets of small holes, the protective parts A, A·· are accurately positioned at the sewing positions of the protective parts on the first protective sheet 1a.

[0050] The two sets of small holes 6a, 6a used for positioning are provided at predetermined intervals and evenly spaced in both the left and right directions, centered on the center line of the left and right middle parts of the protective parts A, A··, and these indicate the sewing lines 6b in the left and right directions. Therefore, the seamstress can recognize the area where the two sets of small holes 6a, 6a are provided as the sewing area 6, and sew using the sewing lines 6b in the sewing area 6 as a reference. Thus, the sewing of multiple protective parts A, A·· onto the first protective sheet 1a is accurate and easy.

[0051] Furthermore, on the upper half side edge 4a of the protective parts A, A··, in priority to the above-mentioned sewing work, ultrasonic welding sections 5a, 5b, 5c, 5a, 5b are provided, for example, as shown in Figure 1, at three locations on the upper side of the six corners of each of the hexagonal protective parts A, A·· (the top and both left and right shoulders), and as shown in Figure 2, at two locations on the upper side of the six corners of each of the hexagonal protective parts A, A·· (the top and the left shoulder), where the corresponding edge 4a of the protective part A, which is covered and polymerized with the cross material 4, 4 as shown in Figure 3, and the corresponding part of the first protective sheet 1a are spot-welded and integrated by ultrasonic welding. The symbols and black dots of these ultrasonic welding sections 5a, 5b, 5c, 5a, 5b in Figures 1 and 2 indicate the welding positions before ultrasonic welding, respectively. On the other hand, the reference numerals for the ultrasonically welded parts 5a, 5b, 5c, 5a, 5b and the black areas in Figures 5, 6, 7, and 8 indicate cross-sections of the welded spot structure after ultrasonic welding.

[0052] Protect part A shown in Figure 1 and Protect part A shown in Figure 2 are structurally identical and have no differences whatsoever. However, Protect part A shown in Figure 1 is the first protect part to be sewn on, located at the right end of the stitching row of the first protective sheet 1a, as shown in Figure 5, for example. Therefore, ultrasonic welding parts 5a, 5b, and 5c are provided at three upper corners (the top and the left and right shoulders) of the six corners of the hexagonal protect part A to securely fasten it temporarily. On the other hand, the right shoulder corners of the second to Nth protect parts A, A, etc. on the left side overlap with the protective material 2 of the protect part A on the right side that was sewn on earlier, so ultrasonic welding is not possible. Furthermore, ultrasonic welding would reduce the relative degree of freedom during sliding, so the parts are not welded. Furthermore, from the perspective of the temporary fastening function of protective part A, it can be sufficiently secured by welding at least two upper corners (the top and the left shoulder) 5a, 5b of the six corners. Therefore, that is sufficient.

[0053] Thus, if the multiple rows and multiple protective parts A,A··, A,A··, A,A·· shown in Figures 5 and 6 to be sewn are precisely positioned and securely temporarily fixed to the first protective sheet 1a beforehand, and the sewing direction and sewing lines are clearly indicated, the subsequent sewing work becomes extremely accurate and efficient, greatly improving manufacturability. Furthermore, automation becomes easier.

[0054] When sewing the multiple rows and multiple protective parts A,A··, A,A··, A,A·· shown in the diagram to this first protective sheet 1a, the protective parts A,A·· on the bottom row side are sewn on first, and then sequentially the lower edges (bottom tops) of the protective parts A,A·· on the upper rows overlap the upper edges (tops) of those lower protective parts A,A··.

[0055] In this case, the setting of the stitching positions of the multiple rows of regular hexagonal shapes and the multiple protective parts A,A··, A,A··, A,A·· on the first protective sheet 1a, and the overlap widths of the left-right and up-down directions are in relation to the setting of the stitching positions of the multiple rows of regular hexagonal shapes and the multiple protective parts A,A··, A,A··, A,A·· on the second protective sheet 1b shown in Figures 7 and 8 below, and when the second protective sheet 1b shown later is superimposed on the first protective sheet 1a (see Figure 9), the relationship between each of the regular hexagonal shapes of the protective sheets 1a and 1b Multiple rows of protective parts A,A··, A,A··, A,A·· are arranged in such a way that, as shown in Figures 9 and 10, for example, the left and right sides and the diagonal top, bottom, left, and right sides of the inner protective material 2,2··, 2,2··, 2,2·· overlap each other by a predetermined width W3 in all six directions of the regular hexagon, and are sewn together in such a positional relationship that a gapless and reliable protective surface is formed by the protective material 2,2··, 2,2··, 2,2·· over the entire protective sheet surface formed by the two protective sheets, the first protective sheet 1a and the second protective sheet 1b, which are superimposed on each other vertically.

[0056] In other words, in the configuration of the embodiment of this invention, for example as shown in Figures 7 and 8, the regular hexagonal shape of the second protective sheet 1b superimposed on the first protective sheet 1a Each is independent of the others. The stitching of multiple rows and multiple protective parts A,A··, A,A··, A,A·· (protective materials 2,2··, 2,2··, 2,2··) to the first protective sheet 1a described above is done in the above hexagonal shape Each is independent of the others.The stitching of multiple rows and multiple protective parts A,A··, A,A··, A,A·· (protective materials 2,2··, 2,2··, 2,2··) is exactly the same, and the setting of the stitching position and the overlap width in the left-right and up-down directions of each of the multiple rows and multiple protective parts A,A··, A,A··, A,A·· of the same regular hexagon shape is in relation to the setting of the stitching position and the overlap width in the left-right and up-down directions of each of the multiple rows and multiple protective parts A,A··, A,A··, A,A·· of the regular hexagon shape with respect to the first protective sheet 1a in Figures 5 and 6 above, when the second protective sheet 1b is placed on top of the first protective sheet 1a (see Figure 9). As shown in Figures 9 and 10, for example, the inner protective material 2,2..., 2,2..., 2,2..., overlaps each other by a predetermined width W3, with both the left and right sides and both the top, bottom, left, and right sides in the diagonal directions overlapping each other evenly in each of the six sides of the regular hexagon. The protective material 2,2..., 2,2..., 2,2..., is sewn in such a positional relationship that a gapless and reliable protective surface (protective surface) is formed by the protective material 2,2..., 2,2..., 2,2..., over the entire protective sheet surface formed by the two protective sheets, the first protective sheet 1a and the second protective sheet 1b, which are overlapped vertically.

[0057] This second preventionEven when sewing multiple rows and multiple protective parts A, A··, A, A··, A, A·· (protective materials 2, 2··, 2, 2··, 2, 2··) of the above-mentioned regular hexagonal shape to the protective sheet 1b, protective part A shown in Figure 1 is the first protective part to be sewn in, for example, as shown in Figure 7, located at the right end of the sewing row of the second protective sheet 1b. Therefore, ultrasonic welding parts 5a, 5b, and 5c are provided at three upper locations (the top and the left and right shoulders) of each of the six corners of each of the above-mentioned regular hexagonal protective part A to securely temporarily fasten them. On the other hand, the right shoulder corners of the second to Nth protective parts A, A·· on the left side overlap with the protective material 2 of the right protective part A that was sewn in earlier, so ultrasonic welding is not possible, and ultrasonic welding would reduce the relative degree of freedom during sliding, so the structure is not designed to weld them.

[0058] Thus, if the multiple rows and multiple protective parts A,A··, A,A··, A,A·· shown in Figures 7 and 8 to be sewn are precisely positioned and securely temporarily fastened to the second protective sheet 1b beforehand, and the sewing direction and sewing lines are clearly indicated, the subsequent sewing work will be more accurate and efficient, greatly improving manufacturability. Furthermore, automation will become easier.

[0059] In the case of sewing the second protective sheet 1b, just as with the first protective sheet 1a, the protective parts A, A·· on the bottom row side are sewn on first, and then the protective parts A, A·· on the upper row side are sewn on so that a portion of the lower end (lower top) of the protective parts A, A·· on the upper row side overlaps with the upper end (upper top) of those lower protective parts A, A··.

[0060] In the configurations shown in Figures 9 and 10, the overlap widths of each protective part A,A··, A,A··, A,A·· and protective material 2,2··, 2,2··, 2,2·· are set to maintain a constant and sufficient overlap for protecting the body surface, taking into account the required amount of movement, free overlap with adjacent plate materials, and relative movement in the overlapping parts.

[0061] And in order to realize such a function, in the embodiment of this invention, when the second protective sheet 1b of the above configuration is placed on top of the first protective sheet 1a of the above configuration, the correspondence between the hexagonal protective parts A,A··, A,A··, A,A·· on the first protective sheet 1a side and the hexagonal protective parts A,A··, A,A··, A,A·· on the second protective sheet 1b side is such that the first protective The centers of the hexagonal protective parts A,A··, A,A··, A,A··, A,A·· on the second protective sheet 1b (the intersection of the three diagonals mentioned above) are superimposed concentrically with the centers of the rhombic space P (see Figure 5) formed between the protective parts A,A··, A,A··, A,A·· on the sheet 1a side (see Figure 9).

[0062] This is also true when viewing the second protective sheet 1b from the first protective sheet side 1a. The center of the rhombus-shaped space P (see Figure 7) formed between the protective parts A,A··, A,A··, A,A·· on the second protective sheet 1b (the intersection of the perpendicularly intersecting diagonals) corresponds concentrically to the center of the hexagonal protective parts A,A··, A,A··, A,A·· on the first protective sheet 1a (the intersection of the three diagonals mentioned above) (see Figure 9).

[0063] As a result, the protective materials 2,

[0064] In this way, an inner plate for protecting the human body according to an embodiment of the present invention is formed.

[0065] Then, on both the upper and lower surfaces (outer and inner surfaces as viewed from the human body) of the inner protector, which consists of the first and second protective sheets 1a and 1b configured in this way, a predetermined outer cover and inner cover of high strength are sewn on (not shown), so that the entire structure is properly covered. In this way, the protector body of a human body protection protector suitable for various applications such as work protectors is finally formed.

[0066] In the above configuration, the metal sheet of the protective material 2 is made of a thin metal sheet that is easily bendable and has sufficient strength, such as a SUS304 stainless steel sheet. Furthermore, the two protective sheets 1a and 1b mentioned above, and the two cross materials 4, 4 above and below each protective part A, A·· are made of a fibrous fabric such as polyester fiber, which has high strength and high surface sliding properties.

[0067] As a result, stable strength of each protective part A,A... and effective sliding between each protective part A,A... are reliably achieved. The thickness of the protective sheets 1a,1b may be relatively thicker than the thickness of the two upper and lower cross materials 4,4, or they may be the same thickness.

[0068] Furthermore, in the above embodiment, the sewing of multiple rows and multiple pieces of protective parts A,A··, A,A··, A,A·· to the protective sheets 1a,1b is not done by sewing the entire outer edge 4a of the protective parts A,A·· (protective material 2,2··), but rather by considering the required amount of movement of each protective part A,A··, the free overlapping of adjacent protective parts A,A··, and the relative amount of movement in the overlapping parts, and using one corner (the top of protective part A, which is a regular hexagon shape as shown in the example) to accurately position it to the desired position and length using the positioning holes 6a,6a, and then setting the ultrasonic welding parts 5a,5b,5c, 5a,5b to temporarily fix it, and then sewing it with good workability. At that time, the positioning holes 6a,6a are used as reference and guide means to indicate the sewing direction and sewing line, enabling accurate and easy sewing.

[0069] As a result, the necessary range of motion for each part, the free overlapping of adjacent protective parts A, A, etc., and the relative movement of the overlapping parts are appropriately ensured, allowing for more free deformation of the inner protector as a whole while providing appropriate protection for the human body. Therefore, the wearing comfort is also improved.

[0070] Furthermore, when the above configuration is adopted, the entire protective material 2, which is made of a thin metal plate in a regular hexagon shape, is enclosed between two cross materials 4,4 that are the same regular hexagon shape and are a predetermined size larger than the protective material 2, which is made of a thin metal plate in a regular hexagon shape. Multiple rows of multiple mutually independent protective parts A, A·· are formed by welding and covering the entirety and outer periphery of the two cross materials 4,4 with two heat-sealable sheets 3,3 that are the same regular hexagon shape and dimensions as the two cross materials 4,4.

[0071] And those Mutually independentMultiple rows and multiple protective parts A, A... are sewn to the first protective sheet 1a and the second protective sheet 1b in a predetermined positional relationship. By overlapping these two protective sheets 1a and 1b, protective materials 2, 2... made of thin metal plates of a predetermined shape, which are enclosed and integrated inside each, overlap each other by a predetermined width in directions such as up, down, left, right, and diagonally, thereby covering the entire required body protector surface without any gaps.

[0072] As a result, with this configuration, each of the multiple protective parts A, A, etc., which enclose and integrate a protective material 2 made of a thin metal plate, is maintained in a predetermined position on the protective sheets 1a and 1b, while being able to slide relative to each other. This allows for free deformation both individually and between them, and since the protective sheet itself only requires two pieces of fabric (cross material), even if the outer material is sewn on afterward, the thickness of the inner plate portion is extremely thin and the rigidity is greatly reduced, so there is almost no restriction on body movement during work or exercise. Therefore, the wearing comfort is greatly improved. In addition, the weight is also greatly reduced, making it sufficiently light.

[0073] Moreover, in the case of the same configuration, the above Mutually independent Each protective part A, A·· is made of the thin metal plate described above. 1 sheet Between two cross materials 4,4, each having the same regular hexagonal shape and outer diameter as the protective material 2, two heat-sealable sheets 3,3, each having the same regular hexagonal shape and outer diameter as the cross materials 4,4, are placed, and the thin metal plate described above is placed between these two heat-sealable sheets 3,3. 1 sheet By overlapping and heat-welding both the upper and lower surfaces of the protective material 2, the above-mentioned thin metal plate is formed. 1 sheet The two upper and lower cross materials 4,4 are welded together to form a single unit on both the upper and lower surfaces of the protective material 2, and the two upper and lower cross materials 4,4 form the thin metal plate. 1 sheet The protective material 2 is integrated into a thin, single-piece component.

[0074] Therefore, even if various deformations occur in the above-mentioned protective parts A, A... due to body movements during work or exercise, the thin metal plate between the two cross materials 4, 4 1 sheet The protective material 2 does not move on its own (it does not slide), and no relative friction occurs between it and the two cross materials 4, 4. Therefore, the risk of the cross materials 4, 4 tearing, as discovered during the development process of the present invention as described above, is reliably eliminated.

[0075] Furthermore, in the same configuration, the welding of the protective material 2 between the two cross materials 4, 4 via the two heat-welding sheets 3, 3 is performed in a manner that forms an outer peripheral edge 4a of the protective part that does not have protective material 2 on the inside, and this formed outer peripheral edge 4a of the protective part that does not have protective material 2 on the inside is formed at the sewing portion 6 of the protective part A to the protective sheets 1a, 1b.

[0076] Furthermore, in the above configuration, it is made of thin metal sheets. 1 sheet Protective material 2, the 1 sheet Two heat-sealing sheets 3,3 for heat-welding the protective material 2, the above 1 sheet The two cross materials 4, 4 that cover and integrate the protective material 2 via the two heat-sealable sheets 3, 3 are each configured in a regular hexagonal shape.

[0077] In this configuration, unlike conventional designs (Patent Document 1) where the protective material is made of thin metal plates and is circular, the six edges (periphery) of the protective materials 2,2... made of thin metal plates located inside each protective part A,A... overlap appropriately in a honeycomb structure with equal widths (parallel widths) in the up, down, left, right, and diagonal directions, ensuring uniform and reliable coverage of the entire required body protector surface. Therefore, the layout of multiple protective parts A,A... on protective sheets 1a,1b becomes easier. Furthermore, a space-efficient overlapping state can be achieved.

[0078] Furthermore, by utilizing the corners (triangular apex) of the larger protective covering cloth material 4,4 compared to the protective material 2, small holes 6a, 6a for positioning relative to the protective sheets 1a, 1b, ultrasonic welding sections 5a, 5b, 5c, 5a, 5b for temporary fastening, and stitching sections 6 can be provided. Therefore, positioning and stitching the protective parts A, A·· relative to the protective sheets 1a, 1b becomes easier.

[0079] As a result, according to the embodiment of this invention, an inner protector for human body protection that is highly flexible and can be freely deformed as a whole, while enabling secure body protection without gaps, can be provided at an extremely low cost using only two protective sheets 1a, 1b and a minimum number of protective parts A, A, etc., corresponding to the shape and dimensions of the protective materials 2, 2, etc.

[0080] Moreover, the above Mutually independent Protect parts A, A... each Protective material 2,2·· is, 2 The two cross materials 4,4 are securely welded together and covered via heat-sealing sheets 3,3, ensuring a secure and fixed structure. This prevents tearing of the fabric due to friction during deformation of the inner protector during work or exercise, resulting in extremely high durability.

[0081] In particular, in the embodiment of this invention, the first inner plate shown in Figures 5 and 6 and the second inner plate shown in Figures 7 and 8 are combined vertically, and two mutually independent protective sheets 1a and 1b are used as the base fabric. Therefore, the degree of freedom of deformation in the vertical direction is increased, as is the movement in the horizontal direction. In addition, the sewing work of protective parts A, A, etc. on protective sheets 1a and 1b becomes easier.

[0082] <Example 1> In the above embodiment, the structure is constructed by combining two sets of inner plates, the first inner plate shown in Figures 5 and 6 and the second inner plate shown in Figures 7 and 8, vertically, and using two mutually independent protective sheets 1a and 1b as the base fabric.

[0083] However, this means that, for example, by sewing the protective parts A,A..., A,A..., A,A... on the second protective sheet 1b between the upper and lower rows of protective parts A,A..., A,A..., A,A... on the first protective sheet 1a shown in Figure 5 in the same relationship as described above, an inner plate in the state shown in Figures 9 and 10 can be constructed with only one protective sheet.

[0084] As a result, only one protective sheet is needed, and only one set of inner plates is required. Therefore, the structure is simpler, the overall thickness is further reduced, and the degree of freedom of deformation in both the vertical and horizontal directions is improved.

[0085] <Modification 2> In the above embodiment, the structure is constructed by combining two sets of inner plates, the first inner plate shown in Figures 5 and 6 and the second inner plate shown in Figures 7 and 8, vertically, and using two mutually independent protective sheets 1a and 1b as the base fabric.

[0086] Furthermore, each protective part A,A..., A,A..., A,A... is only partially sewn in a single row horizontally to the two protective sheets 1a and 1b at the upper end. In addition, only one end of the lower edge of each row of protective parts A,A..., A,A..., A,A... overlaps slightly, and bending deformation between them is easy. Therefore, even if multiple rows and multiple protective parts A,A..., A,A..., A,A... are closely sewn together, the degree of freedom of deformation in the vertical direction is relatively high.

[0087] However, multiple rows and multiple protective parts A,A..., A,A..., A,A... are tightly sewn together in a single row with a relatively large predetermined width W2 overlap in the left-right direction of the two protective sheets 1a and 1b. Therefore, there is a problem in that the bending rigidity in the left-right direction is large, but the degree of freedom of deformation in the left-right direction is lacking.

[0088] Therefore, in order to solve this problem, it is also possible to increase the number of protective sheets 1a and 1b to three or four, remove some of the protective parts A,A··, A,A··, A,A·· in each row on the first and second protective sheets 1a and 1b to create a predetermined gap, sew them to the positions of the third and fourth protective sheets corresponding to the removed positions, and then overlap these multiple protective sheets.

[0089] With this configuration, the number of protective parts in the protective sheet decreases, the bending rigidity in the lateral direction decreases by the amount by which the number of protective sheets increases, and the degree of freedom of deformation in the lateral direction improves. [Explanation of Symbols]

[0090] A: Protective parts 1a: First protective sheet 1b: Second protective sheet 2: Protective material 3: Heat-sealable sheet 4: Cross material 4a: Edge (ear) 5a~5c, 5a,5b: Ultrasonic welding part 6: Sewing part 6a,6a: Small hole 6b: Sewing line W1: Width of edge 4a on the outer perimeter of protective part A W2: The overlap width between adjacent protective parts A, A in the left-right direction. W3: The overlap width between adjacent protective materials 2,2 in the vertical, horizontal, and vertical directions.

Claims

1. An inner protector for protecting the human body, comprising a protective sheet and a plurality of mutually independent protective parts sewn to the protective sheet in a predetermined arrangement and overlapping state, wherein each of the plurality of protective parts consists of one protective material made of a thin metal plate with a hexagonal shape, two cross materials of the same hexagonal shape with a larger outer diameter than the protective material, and two heat-welded sheets of the same hexagonal shape and outer diameter as the two cross materials, wherein the entire protective material is welded and integrated between the two cross materials via the two heat-welded sheets, forming the outer edge of the protective part without protective material on the inside where it is sewn.

2. The inner protector for protecting the human body according to Claim 1, characterized in that, rather than sewing the entire outer edge of the protect parts that do not have protective material on the inside to the protective sheet, the protect parts are sewn to the desired position and only the desired portion, taking into consideration the required amount of movement, required overlap, and relative amount of movement in the overlapping parts of each of the multiple protect parts that are adjacent and overlap in the left and right, up and down and diagonally directions.

3. The inner protector for protecting the human body according to claim 1 or 2, characterized in that each protective part on the protective sheet side has two sets of small holes on the left and right that correspond to each other at the sewing position of the protective part and at the corresponding sewing position on the outer edge of each protective part, and each protective part is positioned at each sewing position of the protective part on the protective sheet side by concentrically aligning these two sets of small holes.

4. The inner protector for human body protection according to claim 3, characterized in that ultrasonic welding portions are provided at least two locations on the outer edge of each protective part that does not have a protective material on the inside, and the protective parts positioned by two sets of small holes are temporarily fixed to the protective sheet by welding the ultrasonic welding portions to the protective sheet.

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