JP6058892B2 - Safety boots - Google Patents

Description

  The present invention relates to a safety boot, and more particularly to a safety boot having a step-out prevention plate.

  FIG. 8 is a perspective view showing an external shape of a conventional knitted safety boot used as, for example, a fire fighting boot, and FIG. 9 is a cross-sectional structural view taken along line IX-IX shown in FIG. [FIG. 11] is a schematic plan view showing the relationship between a step-out prevention plate and a shoe mold, and FIG. 11 is a cross-sectional view taken along the line XI-XI shown in FIG. 10.

  First, referring to FIG. 8, the safety boots 11 are composed of a foot portion 13 that protects a user's foot and a trunk portion 15 that protects the shin.

  Next, referring to FIG. 8 and FIG. 9, the cross-sectional structure is such that a center core 68 and a midsole 69 are formed on the upper surface of the back bottom 17 with respect to the bottom surface side of the foot portion 13, and further on that. An insole 72 is formed through a step-out prevention plate 70. On the upper surface of the insole 72, a lining cloth 66 serving as the inner surface of the shoe is provided on the entire surface.

  On the other hand, with respect to the side surface side of the foot portion 13, an edge-wrapped rubber 18 formed so as to partially contact the back bottom 17, and an exterior rubber 61 and a lower body rubber 62 are provided on the inner surface side of the edge-wrapped rubber 18. Further, a reinforcing cloth 23 made of two Kevlar felts 64a and 64b for piercing and cutting is embedded in the inner surface. The Kevlar felts 64a and 64b are made of high-strength fibers such as para-aramid fibers. A helmet rubber 65 is formed on the inner surface side of the reinforcing cloth 23, and a back cloth 66 facing the inside of the shoe is laid on the entire inner surface from the bottom surface side. The reinforcing cloth 23 is formed on the entire surface of the upper part 21 and the heel part 22 of the safety boot 11 to protect the user's upper part and heel. The exterior rubber 18, the helmet rubber 65, and the backing cloth 66 extend in a cylindrical shape above the collar portion 22 to form the body portion 15.

  Next, referring to FIG. 10 and FIG. 11, the step-out prevention plate 70 is formed by covering a protective plate 71 made of a steel plate having a thickness of 0.4 mm with covering rubbers 73a and 73b, and is defined in JIS T 8101. The test method has a puncture resistance performance of 1100 N or more. That is, the protective plate 71 has higher strength and hardness than the rubber or cloth forming each component on the side surface side of the foot 13 shown in FIG. Then, if any force is applied to the contact portion in a state where the end portion of the protection plate 71 is in contact with the inner surface of the foot portion 13, the protection plate 71 may damage the side surface side of the foot portion 13. Therefore, the size of the step-out prevention plate 70 is set to be smaller than the shoe shape of the safety boot shown by the two-dot chain line in FIG. 10 so that the end portion of the protection plate 71 does not contact the inner surface of the foot portion 13. Yes.

  The step-out prevention plate 70 is bonded to the midsole 69 and the midsole 72 shown in FIG. 9 via an adhesive (not shown) applied to the surfaces of the covering rubbers 73a and 73b.

  In the conventional safety boots as described above, a range that cannot be covered by the step-out prevention plate occurs. Therefore, it is possible to prevent stepping from the bottom side within the range that can be covered with the stepping prevention plate, but as shown by the two-dot chain line arrow in FIG. However, if the reinforcing cloth is penetrated, there is a possibility that the stepping-out cannot be prevented.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a safety boot with improved safety.

To achieve the above object, a first aspect of the present invention, the safety boots having a Fuminuki preventing plate, Fuminuki preventing plate, Ri Na from steel, piercing above 1100N in the test method specified in JIS T 8101 A first protective plate having resistance, and having a piercing resistance of 1100 N or more in the test method prescribed in JIS T 8101, and being integrally bonded so as to overlap the entire upper surface of the first protective plate, The projected area in plan view is larger than the projected area in plan view of the first protective plate, is set to the same size as the shoe mold, and is composed of a flexible second protective plate made of laminated fibers It is characterized by this.

If comprised in this way, the step-out prevention range will expand rather than the case of only a 1st protection board. Moreover, the rigidity of the foot side of the safety boots is lowered.

  According to a second aspect of the present invention, in the configuration of the first aspect of the invention, the second protective plate is installed on the upper surface of the first protective plate and also serves as an insole.

  If comprised in this way, it will become possible to follow the magnitude | size and curved surface of a shoe type as an insole.

  According to a third aspect of the present invention, in the configuration of the second aspect of the present invention, the second protection plate is set to a size that covers up to the arch portion.

  If comprised in this way, installation will be possible along the curved surface of the arch part.

  According to a fourth aspect of the present invention, in the configuration of the first aspect of the present invention, the first protective plate and the second protective plate are integrated with each other through a vulcanized rubber. It is to be glued.

  If comprised in this way, the adhesion state of a 1st protection board and a 2nd protection board will become strong.

  According to a fifth aspect of the present invention, in the configuration of the first aspect of the present invention, the aramid fiber is formed in at least a part between the exterior rubber forming the foot and the trunk and the backing cloth. A reinforcing cloth made of a nonwoven fabric is embedded.

  If comprised in this way, the cut which arises in the embedding part of a reinforcement cloth will not reach a boots inside easily.

As described above, according to the first aspect of the present invention, the step-out prevention range is expanded as compared with the case of only the first protective plate, and thus the safety is further improved. Moreover, since the rigidity on the foot side of the safety boots is lowered, the feeling of use is improved.

  In addition to the effect of the invention described in claim 1, the invention described in claim 2 can be adapted to the size and curved surface of the shoe mold as an insole, so that an efficient arrangement is achieved.

  Since the invention according to claim 3 can be installed along the curved surface of the arch portion in addition to the configuration of the invention according to claim 2, protection of the portion that cannot be covered by the first protection plate is expanded.

  In addition to the configuration of the invention according to any one of claims 1 to 3, the invention described in claim 4 is deviated because the adhesion state between the first protection plate and the second protection plate becomes strong. There is no fear and durability is improved.

  In addition to the configuration of the invention according to any one of claims 1 to 4, the invention described in claim 5 is resistant to cutting because the cut generated in the embedded portion of the reinforcing cloth is difficult to reach the inside of the boots. improves.

It is a plane schematic diagram of the step-out prevention plate provided in the safety boots according to the first embodiment of the present invention. It is sectional drawing of the II-II line shown in FIG. It is a plane schematic diagram which shows the relationship between the step-out prevention board shown in FIG. It is sectional drawing of the foot | leg part of the safety boots provided with the step-out prevention board shown in FIG. 1, Comprising: It is a figure corresponding to FIG. 9 of the conventional safety boots. It is a plane schematic diagram of the step-out prevention board with which the safety boots by 2nd Embodiment of this invention are equipped. FIG. 6 is a schematic plan view of a step-out prevention plate in a state in which the arch protector shown in FIG. 5 is raised. It is sectional drawing of the foot | leg part of the safety boots provided with the step-out prevention board shown in FIG. 5, Comprising: It is a figure corresponding to FIG. 9 of the conventional safety boots. For example, it is the perspective view which showed the external appearance shape of the conventional knitting-type safety boots used as a fire boots. FIG. 9 is a cross-sectional structure diagram of the IX-IX line illustrated in FIG. 8. It is a plane schematic diagram which shows the relationship between a step-out prevention board and a shoe type. It is sectional drawing of the XI-XI line shown in FIG.

  FIG. 1 is a schematic plan view of a step-out prevention plate provided in a safety boot according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II shown in FIG. 1, and FIG. FIG. 4 is a schematic plan view showing the relationship between the step-out prevention plate shown in FIG. 1 and the shoe mold, and FIG. 4 is a cross-sectional view of the foot portion of the safety boot having the step-out prevention plate shown in FIG. It is a figure corresponding to FIG. 9 of the conventional safety boots.

  First, referring to FIGS. 1 and 4, the step-out prevention plate 70 in the conventional safety boot 11 shown in FIGS. 8 and 9 is replaced with a step-out prevention plate 30. Further, the reinforcing cloth 53 made of the aramid fiber non-woven fabrics 54a and 54b embedded between the exterior rubber 61 and the back cloth 66 extends not only to the foot portion 13 shown in FIG. 8 but also to the trunk portion 15 shown in FIG. It is embedded between the exterior rubber 61 and the back cloth 66. If comprised in this way, since the cut which arises in the embedding part of the reinforcement cloth 53 does not reach the inside of a boot well, the anti-cut property of the safety boot 11 improves. In addition, since the component of the other safety boots 11 is the same as the thing by the conventional safety boots 11, description here is not repeated.

  Next, referring to FIG. 1 and FIG. 2, the step-out prevention plate 30 includes a first protective plate 31 made of a steel plate having a thickness of 0.4 mm, and an ARMORTEX (ARMORTEX is overlapped on the entire surface of the first protective plate 31. The second protective plate 32 is a registered trademark). ARMORTEX is made of a laminated fiber in which a plurality of polyester fibers are bonded together. Both the first protective plate 31 and the second protective plate 32 have a piercing resistance (step-out resistance) performance of 1100 N or more in the test method specified in JIS T8101.

  Here, referring to FIG. 3, the first protective plate 31 made of a steel plate has a reason similar to that of the step-out preventing plate 70 shown in FIG. It is set to a small size. On the other hand, the second protective plate 32 is high in strength, but has a hardness lower than that of the first protective plate 31, so that the second protective plate 32 is almost the same size as the shoe type of the safety boots (the second in FIG. The outer edge of the protective plate 32 is set to be smaller than the outer edge of the shoe mold. Therefore, the projected area of the second protective plate 32 in plan view is larger than the projected area of the first protective plate 31 in plan view. If comprised in this way, since the step-out prevention range will expand rather than the case where it is only the 1st protection board 31, safety | security improves more.

  Referring to FIG. 2 again, the entire surface of the first protective plate 31 is covered with vulcanized rubber 33. The second protective plate 32 is integrally bonded to the first protective plate 31 via an adhesive (not shown) applied to one surface of the vulcanized rubber 33 of the first protective plate 31. If comprised in this way, since the adhesion state of the 1st protection board 31 and the 2nd protection board 32 will become strong, there is no possibility that it may shift | deviate and durability improves.

  Since the second protective plate 32 has a certain degree of flexibility, it is installed on the upper surface of the first protective plate 31, and the insole 72 of the conventional safety boot 11 shown in FIGS. Doubles as If comprised in this way, it will become possible to follow the magnitude | size and curved surface of a shoe type as the insole 72, Therefore It becomes an efficient arrangement | positioning.

  2 and 4, with respect to the installation state of the stepping prevention plate 30, an adhesive (not shown) is applied to the other surface of the vulcanized rubber 33, and the intermediate bottom 69 shown in FIG. The prevention plate 30 is adhered. Further, an adhesive (not shown) is also applied to the surface of the covering rubber 34 that covers the upper surface of the second protective plate 32, and the step-out prevention plate 30 is bonded to the back cloth 66 through this.

  Here, as described above, the second protective plate 32 is set to have approximately the same size as the shoe shape of the safety boots 11 and can follow the size and curved surface of the shoe sole. is there. Therefore, the second protective plate 32 also covers the range from the outer edge of the step-out prevention range by the first protective plate 31 to the end of the shoe sole. Then, as described above, since the second protective plate 32 has a puncture resistance performance of 1100 N or more, the range that cannot be covered by the first protective plate 31 as shown by the two-dot chain line arrow in FIG. It is also possible to prevent stepping in.

  FIG. 5 is a schematic plan view of a step-out prevention plate provided in a safety boot according to a second embodiment of the present invention. FIG. 6 shows the step-out prevention plate in a state in which the arch protection part shown in FIG. 5 is raised. FIG. 7 is a schematic plan view, and FIG. 7 is a cross-sectional view of the foot portion of the safety boot having the step-out prevention plate shown in FIG. 5, corresponding to FIG. 9 of the conventional safety boot.

  First, referring to FIGS. 5 and 7, the step-out prevention plate 70 in the conventional safety boot 11 shown in FIGS. 8 and 9 is replaced with a step-out prevention plate 40. In addition, since the component of the other safety boots 11 is the same as the thing by the conventional safety boots 11, description here is not repeated.

  Next, referring to FIG. 5, the step-out prevention plate 40 includes a first protection plate 41 made of a steel plate and a second protection plate 42 made of ARMORTEX that overlaps the entire upper surface of the first protection plate 41. Composed. The second protective plate 42 is formed in a substantially foot shape in plan view, but a portion corresponding to the arch is extended outward. That is, the second protection plate 42 is set to a size that can cover the arch. The part extended outside is referred to as a arch protection part 46. Both the first protective plate 41 and the second protective plate 42 have a piercing resistance performance of 1100 N or more in the test method specified in JIS T8101.

  With respect to the installation state of the step-out prevention plate 40, referring to FIG. 5, FIG. 6 and FIG. 7, the second protection plate 42 is bent along the two-dot chain line shown in FIG. To launch. Then, the step-out prevention plate 40 in the state shown in FIG. If it does in this way, installation will be possible along the curved surface of the arch part, and protection of the part which cannot be covered with the 1st protection board 41 will expand. That is, since the second protective plate 42 has a puncture resistance performance of 1100 N or more as described above, the first protective plate including the arch portion as shown by the two-dot chain arrow on the outside of FIG. Stepping out in a range not covered by the plate 41 can also be prevented.

  In each of the above embodiments, the second protective plate is installed on the upper surface of the first protective plate. However, even if the top and bottom are reversed, an insole may be provided separately.

  In each of the above embodiments, the second protective plate is made of ARMORTEX. However, instead of the second protective plate, it is preferable that the second protective plate is made of laminated fibers.

  Furthermore, in each of the above-described embodiments, the reinforcing cloth is embedded in the foot portion and the trunk portion, but may be embedded in at least a part of the foot portion or the trunk portion.

  Furthermore, in the first embodiment described above, the first protective plate and the second protective plate are integrally bonded via the vulcanized rubber, but are integrally bonded by other methods. Or simply stacked.

  Further, in each of the above-described embodiments, the second protective plate is set to be approximately the same size as the shoe mold and can follow the size and curved surface of the shoe sole. It is only necessary that the projected area in view is set so that the second protective plate is larger than at least the first protective plate.

  Furthermore, in each of the above-described embodiments, the puncture resistance between the first protective plate and the second protective plate is set to a predetermined value, but it is only necessary to have a certain level of puncture resistance.

DESCRIPTION OF SYMBOLS 11 ... Safety boots 13 ... Foot | foot part 15 ... Torso part 30 ... Depression prevention board 31 ... 1st protection board 32 ... 2nd protection board 33 ... Vulcanized rubber 40 ... Depression prevention board 41 ... 1st protection board 42 ... Second protective plate 46 ... arch protection part 53 ... reinforcing cloth 54a, 54b ... non-woven fabric made of aramid fiber 61 ... exterior rubber 66 ... lining cloth The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (5)

In safety boots with a step-out prevention plate,
Yes wherein Fuminuki preventing plate, Ri Na from steel sheet, a first protection plate having a piercing above 1100N resistance in a defined test method in JIS T 8101, or more piercing resistance 1100N in the test method specified in JIS T 8101 and the used and bonded integrally so as to overlap the entire upper surface of the first protective plate, larger than the projected area in plan view projected area of the first protective plate in a plan view, shoe same A safety boot comprising a second protective plate having a flexibility and made of laminated fibers.   The safety boot according to claim 1, wherein the second protection plate is installed on an upper surface of the first protection plate and also serves as an insole.   The safety boots according to claim 2, wherein the second protection plate is set to a size that covers a part of the arch.   The safety boots according to any one of claims 1 to 3, wherein the first protection plate and the second protection plate are integrally bonded via vulcanized rubber.   The safety boots according to any one of claims 1 to 4, wherein a reinforcing cloth made of a non-woven fabric made of aramid fibers is embedded in at least a part between the exterior rubber and the back cloth forming the foot part and the body part.

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