Chest protector and garment with chest protector

Abstract

To provide a thin and light chest protector while sufficient impact absorption property is secured and a garment with the chest protector.SOLUTION: A plate-shaped chest protector 1 for covering the chest of a wearer has a plate thickness of 2 mm or less, density of 3 g / cm3 or less, Rockwell hardness of H80 or more, tensile strength of 600 MPa or more, a tensile modulus of 45 GPa or more, flexural strength of 750 MPa or more and a flexural modulus of 40 GPa or more.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a chest protector and clothing with a chest protector.

Background Art

[0002] Conventionally, as a chest protector for protecting the chest of a wearer such as a motorcycle rider, a synthetic rubber one is known (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Conventional synthetic rubber chest protectors have been problematic in that they are thick and heavy in order to ensure sufficient shock absorption. That is, they are difficult to handle when the wearer attaches and wears them to clothing or the like, and there is room for improvement in terms of improving the wearing comfort.

[0005] An object of the present invention is to provide a thin and lightweight chest protector and clothing with a chest protector while ensuring sufficient shock absorption.

Means for Solving the Problems

[0006] In order to solve the above problems, the present invention provides the following means.

[0007] 〔Aspect 1 of the Present Invention〕 A plate-shaped chest protector that covers the chest of a wearer, having a plate thickness of 2 mm or less and a density of 3 g / cm 3The following, a chest protector having a Rockwell hardness of H80 or more, a tensile strength of 600 MPa or more, a tensile elastic modulus of 45 GPa or more, a flexural strength of 750 MPa or more, and a flexural elastic modulus of 40 GPa or more.

[0008] 〔Aspect 2 of the present invention〕 The chest protector according to aspect 1, wherein the plate thickness is 1.5 mm or less and the density is 2 g / cm 3 or less.

[0009] 〔Aspect 3 of the present invention〕 The chest protector according to aspect 1 or 2, wherein the Rockwell hardness is H90 or more.

[0010] 〔Aspect 4 of the present invention〕 The chest protector according to any one of aspects 1 to 3, wherein the tensile strength is 650 MPa or more and the tensile elastic modulus is 50 GPa or more.

[0011] 〔Aspect 5 of the present invention〕 The chest protector according to any one of aspects 1 to 4, wherein the flexural strength is 800 MPa or more and the flexural elastic modulus is 45 GPa or more.

[0012] 〔Aspect 6 of the present invention〕 The chest protector according to any one of aspects 1 to 5, comprising a front surface and a rear surface which are a pair of plate surfaces facing in the front-rear direction, wherein the rear surface has a concave shape that is recessed toward the front in a longitudinal cross-sectional view perpendicular to the left-right direction, and is arranged with a space from each other in the left-right direction, and has a pair of concave portions that overlap with the left and right pectoralis major muscles of the chest when viewed from the front-rear direction, and has a convex shape that bulges toward the rear in the longitudinal cross-sectional view and is arranged with a space from each other in the left-right direction, and a pair of curved portions that are arranged below the pair of concave portions, and each of the concave portions has a concave shape that is recessed toward the front in a cross-sectional view perpendicular to the up-down direction, and each of the curved portions has a concave shape that is recessed toward the front in the cross-sectional view.

[0013] 〔Aspect 7 of the present invention〕 A chest protector according to any one of Aspects 1 to 6, a front body covering the chest from the front, and holding means for holding the chest protector on the front body, a piece of clothing with a chest protector.

Advantages of the Invention

[0014] According to the chest protector and the piece of clothing with a chest protector of the above aspect of the present invention, while ensuring sufficient shock absorbency, it is thin and lightweight. Therefore, it is easy for the wearer to handle and can obtain a light and comfortable wearing feeling.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0016] Hereinafter, the chest protector 1 and the piece of clothing 10 with a chest protector according to an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the chest protector 1 may sometimes be simply referred to as a protector or the like.

[0017] The chest protector 1 and the garment 10 with a chest protector of the present embodiment protect the wearer's chest when worn by a wearer (not shown). The wearer is, for example, a biker who rides a motorcycle or a bicycle such as a two-wheeler. In the present embodiment, the chest protector 1 has a shape adapted to, for example, the chest shape of an adult male.

[0018] In the present embodiment, an XYZ orthogonal coordinate system (three-dimensional orthogonal coordinate system) is set, and each component will be described. In each figure, the X-axis direction is the direction in which the front (front side) and the back (back side) of the wearer face, corresponding to the front-back direction. Among the front-back direction, the front side is the +X side, and the back side is the -X side.

[0019] Also, the Y-axis direction is the direction in which the left side and the right side of the wearer face, corresponding to the left-right direction. Among the left-right direction, the left side is the +Y side, and the right side is the -Y side. Also, the direction from both ends in the left-right direction of the chest protector 1 toward the central portion is called the inner side (central side) in the left-right direction, and the direction from the central portion in the left-right direction toward both ends is called the outer side in the left-right direction.

[0020] Also, the Z-axis direction is the direction in which the upper surface (such as the top of the head) and the lower surface (such as the sole of the foot) of the wearer face, corresponding to the up-down direction. Among the up-down direction, the upper side is the +Z side, and the lower side is the -Z side.

[0021] Note that in the present embodiment, the front side, the back side, the left side, the right side, the upper side, and the lower side are merely names for explaining the relative positional relationship of each part, and regarding the actual arrangement relationship etc. when using the chest protector 1, it may be an arrangement relationship etc. other than the arrangement relationship indicated by these names.

[0022] As shown in FIGS. 1 and 7, the chest protector 1 is in the shape of a plate that covers the chest of the wearer. The chest protector 1 is composed of, for example, a plate-shaped member made of dry carbon (carbon fiber reinforced plastic, CFRP). As shown in FIGS. 1 to 6, in this embodiment, the chest protector 1 is integrally formed by a single plate-shaped member. The chest protector 1 has a symmetric shape. That is, the chest protector 1 has mirror symmetry in the left-right direction.

[0023] The plate thickness (plate thickness dimension) of the chest protector 1 is, for example, 2 mm or less, preferably 1.5 mm or less. In this embodiment, the plate thickness of the chest protector 1 is about 1.0 mm. Note that the lower limit value of the plate thickness of the chest protector 1 is preferably, for example, 0.5 mm or more.

[0024] The physical property values and the like of the chest protector 1 will be described. The density of the chest protector 1 is, for example, 3 g / cm 3 or less, preferably 2 g / cm 3 or less. In this embodiment, the density of the chest protector 1 is about 1.7 g / cm 3 Note that the lower limit value of the density of the chest protector 1 is preferably, for example, 1.2 g / cm 3 or more.

[0025] The Rockwell hardness of the chest protector 1 is, for example, H80 or more, preferably 90 or more. In this embodiment, the Rockwell hardness of the chest protector 1 is about H100.

[0026] The tensile strength of the chest protector 1 is, for example, 600 MPa or more, preferably 650 MPa or more. In this embodiment, the tensile strength of the chest protector 1 is about 700 MPa.

[0027] The tensile elastic modulus of the chest protector 1 is, for example, 45 GPa or more, preferably 50 GPa or more. In the present embodiment, the tensile elastic modulus of the chest protector 1 is set to about 55 GPa.

[0028] The flexural strength of the chest protector 1 is, for example, 750 MPa or more, preferably 800 MPa or more. In the present embodiment, the flexural strength of the chest protector 1 is set to about 850 MPa.

[0029] The flexural elastic modulus of the chest protector 1 is, for example, 40 GPa or more, preferably 45 GPa or more. In the present embodiment, the flexural elastic modulus of the chest protector 1 is set to about 50 GPa.

[0030] Next, the specific shape and the like of the chest protector 1 will be described. The chest protector 1 has a substantially polygonal plate shape. The chest protector 1 includes a front surface 1a and a rear surface 1b which are a pair of plate surfaces facing in the front-rear direction. The front surface 1a is one of the pair of plate surfaces of the chest protector 1 that faces the front side. The rear surface 1b is the other of the pair of plate surfaces that faces the rear side. Also, the rear surface 1b is the surface facing the wearer's chest side.

[0031] As shown in FIG. 1, the dimension in the left-right direction (width dimension) of the chest protector 1 is the largest at the central portion in the up-down direction of the chest protector 1, and gradually decreases as it goes from the central portion in the up-down direction toward the upper side or the lower side. Also, the dimension in the up-down direction (height dimension) of the chest protector 1 is larger at the intermediate portion located between both ends in the left-right direction than at both ends in the left-right direction of the chest protector 1.

[0032] The chest protector 1 includes an upper recessed portion 2, a lower recessed portion 3, a side recessed portion 4, and a side protruding portion 5.

[0033] The upper recessed portion 2 is disposed at the central portion in the left-right direction at the upper end portion of the chest protector 1. The upper recessed portion 2 has a concave shape that is recessed downward from the upper end edge of the chest protector 1. The lower recessed portion 3 is disposed at the central portion in the left-right direction at the lower end portion of the chest protector 1. The lower recessed portion 3 has a concave shape that is recessed upward from the lower end edge of the chest protector 1.

[0034] The upper recessed portion 2 and the lower recessed portion 3 are used, for example, for the purpose of positioning a belt member or the like attached to the chest protector 1 at the central portion in the left-right direction of the protector (see the modified example of the present embodiment described later and FIG. 8). Further, the upper recessed portion 2 ensures a large movable area for the neck and jaw of the wearer.

[0035] The side recessed portions 4 are disposed at the upper portions at the side end portions in the left-right direction of the chest protector 1. The side recessed portions 4 have a concave shape that is recessed inward (toward the center) in the left-right direction from the side end edges in the left-right direction of the chest protector 1. A pair of side recessed portions 4 are provided at both side end portions in the left-right direction of the chest protector 1. The side recessed portions 4 ensure a large movable area for the arms and shoulders of the wearer.

[0036] The side projecting portions 5 are disposed at the lower portions at the side end portions in the left-right direction of the chest protector 1. The side projecting portions 5 have a convex shape that projects outward in the left-right direction from the side end edges in the left-right direction of the chest protector 1. In the present embodiment, the amount of projection of the side projecting portions 5 outward in the left-right direction increases as it goes upward from the lower end portion of the protector. A pair of side projecting portions 5 are provided at both side end portions in the left-right direction of the chest protector 1. The side projecting portions 5 cover at least a part of the flank of the wearer.

[0037] Further, as shown in FIGS. 2 to 6, the rear surface 1b facing the chest of the wearer has a pair of recesses 6, an inter-recess region 7, a pair of curved portions 8, and an inter-curved portion region 9. Note that FIG. 2 is a longitudinal sectional view showing the II-II cross section of FIG. 1, FIG. 3 is a longitudinal sectional view showing the III-III cross section of FIG. 1. Further, FIG. 4 is a cross-sectional view showing the IV-IV cross section of FIG. 1, FIG. 5 is a cross-sectional view showing the V-V cross section of FIG. 1, and FIG. 6 is a cross-sectional view showing the VI-VI cross section of FIG. 1.

[0038] As shown in FIGS. 4 and 5, a pair of recesses 6 are arranged at intervals in the left-right direction. The pair of recesses 6 are arranged so as to overlap with the left and right pectoralis major muscles of the wearer's chest when viewed from the front-rear direction. Specifically, among the pair of recesses 6, the left recess 6 faces the left pectoralis major muscle of the wearer from the front side, and the right recess 6 faces the right pectoralis major muscle of the wearer from the front side.

[0039] As shown in FIG. 3, in a longitudinal sectional view perpendicular to the left-right direction, each recess 6 has a concave shape that depresses toward the front side. Also, as shown in FIGS. 4 and 5, in a cross-sectional view perpendicular to the up-down direction, each recess 6 has a concave shape that depresses toward the front side.

[0040] The region between the recesses 7 is arranged between the pair of recesses 6 in the left-right direction. As shown in FIG. 2, in a longitudinal sectional view perpendicular to the left-right direction, the region between the recesses 7 is substantially linear and extends in the up-down direction. Also, in the cross-sectional view shown in FIGS. 4 and 5, the region between the recesses 7 has a convex shape that bulges toward the rear side.

[0041] As shown in FIG. 6, a pair of curved portions 8 are arranged at intervals in the left-right direction. The pair of curved portions 8 are arranged below the pair of recesses 6. Specifically, among the pair of curved portions 8, the left curved portion 8 is arranged below the left recess 6, and the right curved portion 8 is arranged below the right recess 6.

[0042] In the longitudinal sectional view shown in FIG. 3, each curved portion 8 has a convex shape that bulges toward the rear side. Also, as shown in FIG. 6, in a cross-sectional view perpendicular to the up-down direction, each curved portion 8 has a concave shape that depresses toward the front side. Specifically, in this cross-sectional view, the curved portion 8 curves and extends toward the rear side as it goes toward the outside in the left-right direction.

[0043] The region 9 between the curved portions is disposed between the pair of curved portions 8 in the left - right direction. In the longitudinal sectional view shown in FIG. 2, the region 9 between the curved portions is substantially linear and extends in the up - down direction. Specifically, in this longitudinal sectional view, the region 9 between the curved portions extends slightly rearward as it goes downward and is inclined with respect to the up - down direction. Also, in the cross - sectional view shown in FIG. 6, the region 9 between the curved portions is substantially linear and extends in the left - right direction.

[0044] Next, the clothing 10 with a chest protector will be described. As shown in FIG. 7, the clothing 10 with a chest protector includes a back panel 41 that covers the wearer's torso (not shown) from the rear, a front panel 40 that covers the torso including the wearer's chest from the front, a pair of sleeve portions 45, a chest protector 1, and holding means 30 for holding the chest protector 1 on the front panel 40.

[0045] In the present embodiment, the front panel 40 has a left front panel 42, a right front panel 43, and a connecting portion 44 that detachably connects the opposing ends of the left front panel 42 and the right front panel 43 to each other. The connecting portion 44 detachably connects the right end portion of the left front panel 42 and the left end portion of the right front panel 43 over substantially the entire up - down direction. In the present embodiment, the connecting portion 44 is a linear fastener (fastener) such as a so - called zipper or a chuck.

[0046] The holding means 30 has pockets 31 disposed on the front panel 40. The chest protector 1 is detachably accommodated in the pockets 31. The pockets 31 hold the chest protector 1 on the front side of the wearer's chest. In the present embodiment, the pockets 31 have a left pocket 32 disposed on the left front panel 42 and a right pocket 33 disposed on the right front panel 43.

[0047] The left pocket 32 forms a concave (pouch-like) shape that opens to the right. The left side portion of the chest protector 1 is accommodated in the left pocket 32. The right pocket 33 forms a concave (pouch-like) shape that opens to the left. The right side portion of the chest protector 1 is accommodated in the right pocket 33. If the chest protector 1 can be held on the front body 40, either the left pocket 32 or the right pocket 33 may not be provided.

[0048] According to the chest protector 1 and the clothing 10 with a chest protector of the present embodiment described above, the following excellent operational effects can be obtained. Compared with a conventional chest protector made of synthetic rubber, in the chest protector 1 of the present embodiment, although the plate thickness is sufficiently thinned to 2 mm or less, all of the hardness, strength, and elastic modulus are sufficiently ensured.

[0049] That is, because it is thin while having high rigidity, the impact from the outside (impact on a narrow range) can be dispersed over a wide range, and the impact transmitted from the protector to the human body (chest) can be received by the entire rib cage. The rib cage is a skeletal structure that protects important organs and the like arranged inside the chest of the human body and constitutes the rib cage. The chest protector 1 of the present embodiment is also characterized in that it effectively utilizes the function of these ribs.

[0050] Specifically, this chest protector 1 not only ensures its own impact absorption, impact dispersion, and penetration resistance, but also acts to strengthen the ribs. Therefore, it becomes possible to effectively utilize the impact absorption effect originally possessed by the ribs. Therefore, according to the chest protector 1 of the present embodiment, the impact absorption effect is significantly enhanced.

[0051] In addition, when the inventor of the present invention had it confirmed by a third-party organization that conducts safety inspections on motorcycle riding helmets, it was demonstrated that the constituent material of the chest protector 1 has the same penetration resistance as a motorcycle riding helmet.

[0052] In addition, this chest protector 1 not only has a thin plate thickness of 2 mm or less, but also has a low density of 3 g / cm 3 or less, so that the overall weight of the protector can be reduced. Specifically, the chest protector 1 of the present embodiment can suppress the weight to about 100 g, for example. Therefore, it is easy to handle when the wearer attaches and wears it to clothes or the like, and the wearing feeling can be improved.

[0053] As described above, according to the chest protector 1 of the present embodiment and the clothing 10 with a chest protector provided with the same, it is thin and lightweight while ensuring sufficient shock absorbency. Therefore, it is easy for the wearer to handle and can obtain a light wearing feeling.

[0054] In addition, if the Rockwell hardness of the chest protector 1 is less than H80, the tensile strength is less than 600 MPa, the tensile elastic modulus is less than 45 GPa, the bending strength is less than 750 MPa, or the bending elastic modulus is less than 40 GPa, there is a possibility that a sufficient shock absorption effect cannot be obtained. Therefore, in order to stably obtain the above-described effects of the present embodiment, the Rockwell hardness of the chest protector 1 is H80 or more, the tensile strength is 600 MPa or more, the tensile elastic modulus is 45 GPa or more, the bending strength is 750 MPa or more, and the bending elastic modulus is 40 GPa or more.

[0055] In addition, the chest protector 1 of the present embodiment preferably has a plate thickness of 1.5 mm or less and a density of 2 g / cm 3 or less. When the above-described hardness, strength, and elastic modulus are ensured, and the plate thickness is 1.5 mm or less and the density is 2 g / cm 3 or less, it is possible to further reduce the thickness and weight of the entire chest protector 1 while ensuring the safety of the chest protector 1.

[0056] In addition, the chest protector 1 of the present embodiment preferably has a Rockwell hardness of H90 or more. When the Rockwell hardness is H90 or more, it becomes easier to disperse the impact over a wider range, and the impact absorption effect of the chest protector 1 can be further enhanced.

[0057] In addition, the chest protector 1 of the present embodiment preferably has a tensile strength of 650 MPa or more and a tensile elastic modulus of 50 GPa or more. When the tensile strength is 650 MPa or more and the tensile elastic modulus is 50 GPa or more, the impact absorption effect of the chest protector 1 can be further enhanced.

[0058] In addition, the chest protector 1 of the present embodiment preferably has a flexural strength of 800 MPa or more and a flexural elastic modulus of 45 GPa or more. When the flexural strength is 800 MPa or more and the flexural elastic modulus is 45 GPa or more, the impact absorption effect of the chest protector 1 can be further enhanced.

[0059] In addition, the rear surface 1b of the chest protector 1 of the present embodiment has a pair of concave portions 6 and a pair of curved portions 8. The pair of concave portions 6 are concave-shaped, recessed toward the front side in a longitudinal cross-sectional view perpendicular to the left-right direction, are arranged at intervals in the left-right direction, and overlap with the left and right pectoralis major muscles of the wearer's chest when viewed from the front-rear direction. Also, the pair of curved portions 8 are convex-shaped, bulging toward the rear side in the longitudinal cross-sectional view, are arranged at intervals in the left-right direction, and are arranged below the pair of concave portions 6. And each concave portion 6 is concave-shaped, recessed toward the front side in a cross-sectional view perpendicular to the up-down direction, and each curved portion 8 is concave-shaped, recessed toward the front side in the cross-sectional view.

[0060] In this case, the rear surface 1b of the chest protector 1 has a concave and convex shape so as to follow the undulations from the pectoralis major muscle of the wearer's chest to the upper abdomen (upper rectus abdominis muscle). As a result, a protector shape that fits three-dimensionally to the chest shape of the wearer can be obtained. It becomes possible to ensure a sufficiently wide contact area between the chest protector 1 and the human chest, and to disperse the external impact acting on the protector over a wider range (to suppress the impact per unit area to be smaller) and transmit it to the human body. Therefore, the impact absorption effect of the chest protector 1 is more significantly enhanced.

[0061] The present invention is not limited to the above-described embodiments, and for example, as described below, configuration changes and the like are possible without departing from the gist of the present invention. In the illustration of the modification example, the same components as those in the above-described embodiments are denoted by the same reference numerals, and the following mainly describes the different points.

[0062] FIG. 8 shows a modification example of the holding means 30 of the chest protector 1 described in the above-described embodiment. In this modification example, the holding means 30 for holding the chest protector 1 on the front body 40 has a belt member (attachment member) 34 that is detachably attached to the chest protector 1. The belt member 34, for example, forms a loop and is wound around from the central portion in the left-right direction of the front surface 1a of the chest protector 1 to the central portion in the left-right direction of the rear surface 1b. Note that the belt member 34 is not limited to a configuration in which it can be attached to and detached from the protector and has a loop shape, and for example, it may be in the form of a sheet and may be disposed only on the front surface 1a of the chest protector 1 by being adhesively fixed using an adhesive or the like.

[0063] The belt member 34 has a plurality of snap buttons 35, 36 disposed on the front surface of the belt member 34. The plurality of snap buttons 35, 36 include a plurality of left snap buttons 35 disposed at the left end portion of the front surface of the belt member 34 and a plurality of right snap buttons 36 disposed at the right end portion of the front surface of the belt member 34. The plurality of left snap buttons 35 are arranged at intervals in the vertical direction. The plurality of right snap buttons 36 are arranged at intervals in the vertical direction.

[0064] Although not particularly shown, in this modification, the holding means 30 has a plurality of front body snap buttons disposed on the front body 40 (see FIG. 7). The plurality of front body snap buttons include a plurality of left front body snap buttons provided on the lining of the left front body 42 and a plurality of right front body snap buttons provided on the lining of the right front body 43. The plurality of left front body snap buttons are arranged at intervals in the vertical direction. The plurality of right front body snap buttons are arranged at intervals in the vertical direction.

[0065] The left front body snap buttons and the left snap buttons 35 are arranged to face each other in the front-rear direction. Among the left front body snap buttons and the left snap buttons 35, one has an engagement recess, and the other has an engagement projection that detachably fits (engages) with this engagement recess. By engaging each left front body snap button with each left snap button 35, the chest protector 1 is detachably held on the left front body 42.

[0066] Also, the right front body snap buttons and the right snap buttons 36 are arranged to face each other in the front-rear direction. Among the right front body snap buttons and the right snap buttons 36, one has an engagement recess, and the other has an engagement projection that detachably fits (engages) with this engagement recess. By engaging each right front body snap button with each right snap button 36, the chest protector 1 is detachably held on the right front body 43. Also in this modification, the same operational effects as those of the aforementioned embodiment can be obtained.

[0067] Further, in the above-described modification, the holding means 30 may include, instead of or together with various snap buttons, a hook-and-loop fastener 37. In this case, the hook-and-loop fastener 37 has a male fastener and a female fastener that detachably engages with the engaging surface of the male fastener. Of the male fastener and the female fastener, one is disposed on the front surface of the belt member 34, and the other is disposed on the lining of the front body 40. Also in this case, the same operational effects as those of the above-described embodiment can be obtained.

[0068] Also, in the above-described embodiment, an example in which the garment 10 with a chest protector includes a fastener (a wire fastener) as the connecting portion 44 has been given, but the present invention is not limited to this. The connecting portion 44 may have a configuration that detachably connects the opposing ends of the left front body 42 and the right front body 43 to each other. For example, it may include a plurality of sets of concave and convex snap buttons that fit (engage) with each other, or a plurality of sets of buttons and buttonholes. Alternatively, the front body 40 may not have the connecting portion 44, and the left front body 42 and the right front body 43 may be integrally formed.

[0069] Also, in the above-described embodiment, an example in which the garment 10 with a chest protector is a long sleeve having a pair of sleeve portions 45 has been given, but the present invention is not limited to this. For example, it may be a short sleeve or a three-quarter sleeve. Further, the garment 10 with a chest protector may not have a pair of sleeve portions 45.

[0070] In the above-described embodiment, an example in which the wearer wearing the chest protector 1 is a biker who rides a motorcycle or a bicycle such as a motorbike has been given, but the present invention is not limited to this. The chest protector of the present invention can obtain the same excellent operational effects as those of the above-described embodiment even when worn by a wearer who performs sports or work in which there is a risk of heart concussion or the like due to receiving a strong impact.

[0071] Moreover, the chest protector of the present invention is not limited to being made of dry carbon as described in the foregoing embodiments. As long as it satisfies the plate thickness, each physical property value, etc. of the present invention, for example, it may be composed of another material such as metal or resin having performance equivalent to that of dry carbon.

[0072] Also, in the foregoing embodiments, the chest protector 1 has been described as having a shape adapted to the chest shape of, for example, an adult male, but it is not limited thereto. The chest protector 1 can also be adapted to each chest shape of, for example, adult women and children other than adult males.

[0073] The present invention may combine each configuration described in the foregoing embodiments and modification examples within the scope not departing from the gist of the present invention, and addition, omission, substitution, and other changes of the configuration are possible. Also, the present invention is not limited by the foregoing embodiments, etc., and is limited only by the scope of the claims.

Industrial Applicability

[0074] According to the chest protector and the garment with a chest protector of the present invention, while ensuring sufficient shock absorbency, it is thin and lightweight. Therefore, it is easy for the wearer to handle and can obtain a light wearing feeling. Accordingly, it has industrial applicability.

Explanation of Reference Numerals

[0075] 1... Chest protector, 1a... Front surface, 1b... Rear surface, 6... Recessed portion, 8... Curved portion, 10... Garment with a chest protector, 30... Holding means, 40... Front body

Claims

1. A chest protector in the form of a plate that covers the wearer's chest, with a plate thickness of 2 mm or less, The density is 3 g / cm ３ or less, a Rockwell hardness of H80 or more, a tensile strength of 600 MPa or more, a tensile elastic modulus of 45 GPa or more, a flexural strength of 750 MPa or more, and a flexural elastic modulus of 40 GPa or more, the chest protector.

2. wherein the plate thickness is 1.5 mm or less, The density is 2 g / cm ３ or less, the chest protector according to Claim 1.

3. wherein the Rockwell hardness is H90 or more, the chest protector according to Claim 1 or 2.

4. wherein the tensile strength is 650 MPa or more, and the tensile elastic modulus is 50 GPa or more, the chest protector according to Claim 1 or 2.

5. wherein the flexural strength is 800 MPa or more, and the flexural elastic modulus is 45 GPa or more, the chest protector according to Claim 1 or 2.

6. comprising a front surface and a rear surface which are a pair of plate surfaces facing in the front-rear direction, wherein the rear surface forms a concave shape that is recessed toward the front in a longitudinal cross-sectional view perpendicular to the left-right direction, and is arranged with a space between them in the left-right direction, and a pair of concave portions that overlap the left and right pectoralis major muscles of the chest when viewed from the front-rear direction, forms a convex shape that bulges toward the rear in the longitudinal cross-sectional view, and is arranged with a space between them in the left-right direction, and a pair of curved portions that are arranged below the pair of concave portions, each of the concave portions forms a concave shape that is recessed toward the front in a cross-sectional view perpendicular to the up-down direction, and each of the curved portions forms a concave shape that is recessed toward the front in the cross-sectional view, the chest protector according to Claim 1 or 2.

7. the chest protector according to Claim 1 or 2, a front body that covers the chest from the front, and holding means for holding the chest protector on the front body, clothing with a chest protector.

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