Safety boots

Abstract

To provide a safety shoe capable of preventing unintended detachment of an instep protector which can be easily detached by a hook and loop fastener, and preventing exposure of a male surface or a female surface of the hook and loop fastener after detachment of the instep protector.SOLUTION: In a safety shoe 1 in which an instep protector 2 is detachably attached, a left inner flap 12, a left outer flap 13, a right inner flap 14 and a right outer flap 15 are provided on an external surface of an upper, an instep protector 2 comprises female surfaces 21, 22, 24 of the hook and loop fastener on the left inner surface, the left outer surface, and right outer surface respectively, and male surface 23 of the hook and loop fastener on the right inner surface, the left inner flap 12 comprises the male surface 121 of the hook and loop fastener on the external surface, the left outer flap 13 comprises the male surface 131 of the hook and loop fastener on the internal surface, the right inner flap 14 comprises the female surface 143 of the hook and loop fastener on the external surface, and the right outer flap 15 comprises the male surface 151 of the hook and loop fastener on the internal surface.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to safety shoes with detachable instep protectors. [Background technology]

[0002] Some safety shoes equipped with an instep protector that protects the instep from falling objects have an instep protector that can be attached and detached (Patent Document 1 and Patent Document 2). This makes the instep protector replaceable. Patent Document 1 discloses safety shoes with an instep protector that can be attached and detached by an instep protector attachment belt that passes through a first belt ring and a second belt ring provided on the instep (Patent Document 1, [Claim 1]). The safety shoes disclosed in Patent Document 1 have the advantage that the instep protector can be attached using only one of the first belt ring and the second belt ring (Patent Document 1,

[0007] ).

[0003] Patent Document 2 discloses safety shoes (work shoes) with an instep protector (protector) that can be attached and detached by a fastener provided on the instep (Patent Document 2, [Claim 1]). Examples of the fastener include a hook-and-loop fastener, a band, and a hook (Patent Document 2,

[0004] ). The instep protector is replaced if it becomes damaged or dirty (Patent Document 2,

[0006] ). The safety shoes disclosed in Patent Document 2 have an instep protector made of a soft, flexible, uneven elastic material, which provides better protection for the instep (Patent Document 2,

[0007] ). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 05-093211 [Patent Document 2] Publication No. 3219923 Summary of the Invention [Problem to be solved by the invention]

[0005] The safety shoes disclosed in Patent Document 1 have a structure in which the instep protector is attached by passing the instep protector attachment belt through one or both of the first belt ring and the second belt ring, and therefore have the advantage that the instep protector is securely attached, does not slip, and is difficult to come off. However, the task of passing the instep protector attachment belt through one or both of the first belt ring and the second belt ring is difficult, and the safety shoes disclosed in Patent Document 1 are not suitable for cases where the instep protector needs to be put on and taken off in a complicated manner.

[0006] In contrast, the safety shoes disclosed in Patent Document 2 use a hook-and-loop fastener to attach and detach the instep protector, so it is relatively easy to attach and detach the instep protector without any hassle. However, the instep protector is attached by simply joining the male (hook) and female (loop) surfaces of the hook-and-loop fastener, so there is a risk of it coming off unexpectedly. In addition, when the instep protector is removed, the male or female surface of the hook-and-loop fastener on the instep is exposed, and there is a risk of the male or female surface of the hook-and-loop fastener becoming dirty.

[0007] Safety shoes with instep protectors are often worn with the instep protectors on the assumption that they will not be removed frequently. However, in order to provide sufficient protection at a low cost, instep protectors are mostly constructed with a built-in metal plate, which has the disadvantage of restricting foot movement in safety shoes, and it is preferable to be able to remove them if protection of the instep is not required. Therefore, we have studied safety shoes that prevent the instep protector, which can be easily attached and removed with a hook-and-loop fastener, from accidentally coming off, and that do not expose the male or female surface of the hook-and-loop fastener after the instep protector is removed. [Means for solving the problem]

[0008] As a result of the study, the developed safety shoes have an instep protector that can be easily attached and detached. The left side is fixed, and the right side is freely openable and closable. The left side inner flap and the left side outer flap are provided on the left side outer surface of the instep, and the right side is fixed, and the left side is freely openable and closable. The right side is fixed, and the left side inner flap and the right side outer flap are provided on the right side outer surface of the instep. The left side inner flap is provided with a hook-and-loop fastener male or female surface on each of the left inner surface, the left outer surface, the right inner surface, and the right outer surface. The left side inner flap is provided with a hook-and-loop fastener that is joined to the male or female surface of the hook-and-loop fastener provided on the left inner surface of the instep protector. the left outer flap has a female or male surface of a hook-and-loop fastener on its outer surface which joins with the male or female surface of the hook-and-loop fastener on the left outer surface of the instep protector; the right inner flap has a female or male surface of a hook-and-loop fastener on its outer surface which joins with the male or female surface of the hook-and-loop fastener on the right inner surface of the instep protector; and the right outer flap has a female or male surface of a hook-and-loop fastener on its inner surface which joins with the male or female surface of the hook-and-loop fastener on the right outer surface of the instep protector.

[0009] The safety shoes of the present invention are attached by fastening the left side of the instep protector with the left side inner flap and the left side outer flap provided on the left side outer surface of the instep protector, and the right side of the instep protector with the right side inner flap and the right side outer flap provided on the right side outer surface of the instep protector, respectively. Specifically, the left side inner surface of the instep protector is fastened to the outer surface of the left side inner flap, the left side outer surface is fastened to the inner surface of the left side outer flap, the right side inner surface is fastened to the outer surface of the right side inner flap, and the right side outer surface is fastened to the inner surface of the right side inner flap, respectively, with fasteners, and the left side inner flap and the left side outer flap sandwich the left side of the instep protector, and the right side of the instep protector is sandwiched by the right side inner flap and the right side outer flap provided on the right side outer surface of the instep protector.

[0010] The right inner flap is a fastening belt that crosses the instep, and the male or female side of the hook-and-loop fastener is provided on the left outer surface of the upper, and the right inner flap is provided on the left inner surface with a female or male side of the hook-and-loop fastener that is joined to the male or female side of the hook-and-loop fastener provided on the left outer surface of the upper, and the female or male side of the hook-and-loop fastener that is joined to the male or female side of the hook-and-loop fastener provided on the right inner surface of the instep protector is provided on the right outer surface. The right inner flap is an example, and the left inner flap may be used as a fastening belt instead of the right inner flap. In this case, the configuration in which the left inner flap, which is a fastening belt that crosses the instep, is provided with a left inner flap, the descriptions of left and right are all reversed.

[0011] The right inner flap, which is provided as a fastening belt across the instep, has its left inner side joined to the left outer side of the upper with a hook-and-loop fastener, and fastens the upper as a fastening belt while shrinking the flexible upper. With the left inner flap overlapping the left side of the right inner flap fastening the upper, the instep protector is joined with hook-and-loop fasteners to the outer side of the left inner flap, the left outer side to the inner side of the left outer flap, the right inner side to the right outer side of the right inner flap, and the right outer side to the inner side of the right inner flap.

[0012] The right inner flap may be a fastening belt that crosses the instep, and the right inner flap may have a female or male surface of a hook-and-loop fastener on its left inner surface that is joined to the male or female surface of the hook-and-loop fastener on the outer surface of the left inner flap, a female or male surface of a hook-and-loop fastener on its left outer surface that is joined to the male or female surface of the hook-and-loop fastener on the inner surface of the left outer flap, and a female or male surface of a hook-and-loop fastener on its right outer surface that is joined to the male or female surface of the hook-and-loop fastener on the inner surface of the right outer flap. The right inner flap is an example, and the left inner flap may be used as a fastening belt instead of the right inner flap. In this case, the configuration in which the left inner flap that is a fastening belt that crosses the instep is provided with a left inner flap, the descriptions of left and right are all reversed.

[0013] The right inner flap, which is a tightening belt that crosses the instep, has its left inner surface joined to the outer surface of the left inner flap with a hook-and-loop fastener, and tightens the upper as a tightening belt while shrinking the flexible upper. With the instep protector removed, the left outer surface of the right inner flap is joined to the inner surface of the left outer flap and its right outer surface to the inner surface of the right inner flap with a hook-and-loop fastener, respectively. As a result, the left inner flap and the left outer flap sandwich the left side of the right inner flap, and the right outer flap overlaps the right side of the right inner flap, and the hook-and-loop fasteners are joined to each other, so that the right inner flap, which is a tightening belt, is tightly attached to the upper without the instep protector. Effect of the Invention

[0014] In the safety shoes of the present invention, the left and right sides of the instep protector are sandwiched between the left inner flap and the left outer flap and the right inner flap and the right outer flap, respectively, and the hook-and-loop fastener is joined, so that the instep protector is held firmly and does not come off unexpectedly. In this way, the safety shoes of the present invention ensure stable attachment of the removable instep protector. Since the instep protector can be stably attached to the safety shoes, it is possible to increase the degree of freedom in design, for example, a large configuration that covers the toes and ankles. In addition, the left outer flap and the right outer flap that hold the left and right sides of the instep protector do not have hook-and-loop fasteners on their outer surfaces, so the safety shoes of the present invention with the instep protector attached do not have exposed hook-and-loop fasteners.

[0015] If the right inner flap (or the left inner flap) is used as a fastening belt, the instep protector can be attached without loosening the fastened upper, and the instep protector can be attached more stably. Then, by joining the right outer flap to the right inner flap that is hung over the instep, and by sandwiching the left side of the right inner flap, which can be opened and closed, between the left inner flap and the left outer flap, the left inner flap, the left outer flap, the right inner flap and the right outer flap can be stably attached to the upper when the instep protector is removed. In this case, the left outer flap and the right outer flap that hold the left and right sides of the right inner flap do not have hook-and-loop fasteners on their outer surfaces, so that the hook-and-loop fasteners are not exposed in the safety shoes of the present invention when the instep protector is removed. [Brief description of the drawings]

[0016] [Figure 1] 1 is a perspective view showing an example of a safety shoe to which the present invention is applied, in which an instep protector is detachable. [Diagram 2] FIG. 2 is a perspective view showing step 1 of putting on an instep protector in the safety shoe of this embodiment. [Diagram 3] FIG. 2 is a perspective view showing step 2 of putting on an instep protector in the safety shoe of this embodiment. [Figure 4] FIG. 2 is a perspective view of the instep protector of this example as seen from the outer surface side. [Diagram 5] FIG. 2 is a perspective view of the instep protector of this example, as viewed from the inner side. [Figure 6] FIG. 11 is a perspective view showing step 3 of putting on the instep protector in the safety shoe of this embodiment. [Figure 7] FIG. 2 is a perspective view showing the fastening state of the right inner flap in the safety shoe of this example when the instep protector is removed. [Figure 8] FIG. 2 is a perspective view showing the safety shoe of the present embodiment with the instep protector removed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, the embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, the safety shoes 1 of this example are an example with a toe gap, and the instep protector 2 is detachable from the instep cover 11. Since the safety shoes 1 for the left and right feet are symmetrical, for convenience of explanation, the safety shoes 1 for the right foot will be taken as an example and specifically described. In each figure where the safety shoes 1 are viewed from the front side, the left and right of each component are reversed from the illustration (for example, the left inner flap 12 is located on the right side in each figure).

[0018] As shown in Fig. 2 and Fig. 3, the right safety shoe 1 is configured with a left inner flap 12 and a left outer flap 13 on the left side (right side in the figure), and a right inner flap 14 and a right outer flap 15 on the right side (left side in the figure) sandwiching a flexible adjustment part in the left-right center part of the upper 11. In this example, the safety shoe 1 also uses the right inner flap 14 as a tightening belt. The right inner flap 14 is joined to the left outer surface or the left inner flap of the upper 11 while the left-right center part of the upper 11 is bent or stretched, thereby adjusting the tightening degree of the upper 11 to the foot.

[0019] The left inner flap 12 and the left outer flap 13 are attached to the left outer surface of the upper 11 with the left edge fixed by sewing and the right side openable and closable. The right inner flap 14 and the right outer flap 15 are attached to the right outer surface of the upper 11 with the right edge fixed by sewing and the left side openable and closable. The left inner flap 12 and the left outer flap 13 are pieces of cloth that are long from front to back and have the same shape of a rectangular shape in a plan view. The right outer flap 15 is a piece of cloth that is symmetrical to the left outer flap 13 and has the same shape. The right inner flap 14 is used as a fastening belt, so it is a piece of cloth that is long from left to right and has a rectangular shape in a plan view.

[0020] The left inner flap 12 has a hook-and-loop fastener male surface 121 on the entire outer surface. The left outer flap 13 has a hook-and-loop fastener male surface 131 on the entire inner surface. The right outer flap 15 has a hook-and-loop fastener male surface 151 on the entire inner surface. The right inner flap 14 has hook-and-loop fastener female surfaces 141, 142, 143, which are approximately rectangular in plan view and extend in the front-rear direction, on the left inner surface, the left outer surface, and the right outer surface, respectively. In addition, the safety shoe 1 of this example has a hook-and-loop fastener male surface 111 on the left outer surface of the upper 11 in the area where the left inner flap 14 overlaps.

[0021] As shown in Figures 4 and 5, the instep protector 2 for the right foot has an appearance in which a symmetrical, approximately pentagonal surface material in plan view is folded into a mountain-shaped cross section so as to be convex upward. Instep protectors of various conventionally known structures are used. The instep protector 2 of this example is a structure in which a hard protective plate (metal plate or hard resin plate, etc.) with sufficient strength to protect the instep of the foot is wrapped in an elastic cushioning material and covered with a cloth outer skin. The hook-and-loop fastener is approximately rectangular in plan view, extending in the front-rear direction along the side edge, and is provided with a female surface 21 on the left inner surface, a female surface 22 on the left outer surface, a male surface 23 on the right inner surface, and a female surface 24 on the right outer surface.

[0022] The procedure for putting on the instep protector 2 in the safety shoes 1 of this embodiment will be described. In step 1, when the instep protector 2 has been removed, all of the hook-and-loop fasteners on the left inner flap 12, left outer flap 13, right inner flap 14, and right outer flap 15 are released, as shown in Fig. 2. In the safety shoes 1 of this embodiment, the right inner flap 14 doubles as a fastening belt, so from the step 1 state, the right inner flap 14 is placed over the instep, and the female surface 141 of the hook-and-loop fastener on the left inner surface of the right inner flap 14 is joined to the male surface 111 of the hook-and-loop fastener on the left outer surface of the upper 11, as shown in Fig. 3.

[0023] Next, in the state of step 2 in which the left side inner flap 12 is overlapped on the left outer surface of the right side inner flap 14 whose left side is fixed to the upper 11, as shown in Fig. 6, the female surface 21 of the hook-and-loop fastener on the left inner surface of the upper protector 2 is joined to the male surface 121 of the hook-and-loop fastener on the outer surface of the left side inner flap 12, and the male surface 23 of the hook-and-loop fastener on the right inner surface of the upper protector 2 is joined to the female surface 143 of the hook-and-loop fastener on the right outer surface of the right side inner flap 14, respectively, to bring the upper protector 2 into the state of step 3 in which it is temporarily fixed. The upper protector 2 is temporarily fixed with the left inner surface and the right inner surface joined to the left inner flap 12 and the right inner flap 14, respectively.

[0024] As the left inner flap 12 does not have a hook-and-loop fastener on its inner surface, it is not joined to the left outer surface of the right inner flap 14 and can move freely, making it easy to align the instep protector 2 whose left and right inner surfaces are joined to the left inner flap 12 and right inner flap 14, respectively. If it is desired to fix the position of the left inner flap 12, for example, a male surface of a hook-and-loop fastener that joins with the female surface 142 of the hook-and-loop fastener provided on the left outer surface of the right inner flap 14 in this example may be provided on the outer surface of the left inner flap 12.

[0025] Finally, from the state of step 3 where the upper protector 2 is temporarily fixed, the male surface 131 of the hook-and-loop fastener on the inner surface of the left outer flap 13 is overlapped and joined to the female surface 22 of the hook-and-loop fastener on the left outer surface of the upper protector 2, and the female surface 151 of the hook-and-loop fastener on the inner surface of the right outer flap 15 is overlapped and joined to the female surface 24 of the hook-and-loop fastener on the right outer surface of the upper protector 2, and the installation of the upper protector 2 is completed (see Figure 1). The upper protector 2 is sandwiched between the left inner flap 12 and the left outer flap 13 on the left side, and between the right inner flap 14 and the right outer flap 15 on the right side, and both the inner and outer surfaces are joined to the hook-and-loop fastener, so there is no risk of it coming off the upper cover 11, and it does not shift position relative to the upper cover 11.

[0026] The safety shoes 1 are fitted over the upper 11 with a gap in the middle part of the right side and the inner flap 14 as the inner layer, which is joined only on the left and right sides with a hook-and-loop fastener, and the instep protector 2 as the outer layer, which is joined only on the left and right sides with a hook-and-loop fastener, is fitted over the right inner flap 14 with a gap in the middle part of the right side. As a result, the impact applied to the instep protector 2 from above is mitigated by the gap between the upper 11 and the right inner flap 14 and the gap between the right inner flap 14 and the instep protector 2, and is not easily transmitted to the instep. In this way, the safety shoes 1 of the present invention also have the advantage of improved instep protection performance. The instep protector 2 is removed by reversing the steps 1 to 3 for fitting.

[0027] When the safety shoes 1 of the present invention are used with the instep protector 2 removed, the hook-and-loop fastener for attaching the instep protector 2 is not exposed. When the safety shoes 1 are not attached with the instep protector 2, as shown in Fig. 7, the male surface 121 of the hook-and-loop fastener on the outer surface of the left inner flap 12 is overlapped and joined to the female surface 41 of the hook-and-loop fastener 1 on the left inner surface of the right inner flap 14. As a result, the left inner flap 12 and the right inner flap 14 are restrained by each other and the upper 11 is tightened, but the upper 11 is not restrained by the left inner flap 12 and the right inner flap 14 and can move freely.

[0028] Then, by overlapping and joining the male surface 131 of the hook-and-loop fastener on the inner surface of the left outer flap 13 to the female surface 142 of the hook-and-loop fastener on the left outer surface of the right inner flap, and overlapping and joining the female surface 151 of the hook-and-loop fastener on the inner surface of the right outer flap 15 to the female surface 143 of the hook-and-loop fastener on the right outer surface of the right inner flap 14, the safety shoes 1 without the instep protector 2 is completed as shown in Fig. 8. As is clear from Fig. 8, the safety shoes 1 of this example do not have the instep protector 2, so the hook-and-loop fastener is not exposed even when the upper 11 is slightly exposed because there is no instep protector 2.

[0029] The left outer flap 13 and the right outer flap 15 are restrained by the right inner flap 14 and do not move unexpectedly by overlapping and joining the male surface 131 of the hook-and-loop fastener on the inner surface of the left outer flap 13 with the female surface 142 of the hook-and-loop fastener on the left outer surface of the right inner flap 14, and overlapping and joining the male surface 151 of the hook-and-loop fastener on the inner surface of the right outer flap 15 with the female surface 143 of the hook-and-loop fastener on the right outer surface of the right inner flap 14. The right inner flap 14 is not joined to the upper 11 but is only joined to the left inner flap 12, so the upper 11 has a high degree of freedom and ensures the freedom of the foot when the upper protector 2 is not worn.

[0030] Here, if the male surface 23 of the hook-and-loop fastener on the right inner surface of the upper protector 2 is joined to the female surface 143 of the hook-and-loop fastener on the right outer surface of the right inner flap 14 from the state shown in Fig. 7, the upper protector 2 can be temporarily fixed in the same state as in step 3 while preventing the upper protector 2 from shifting out of position, although the stability of the upper protector 2 is slightly reduced. In this case, the upper cover 11 is not restrained by the right inner flap 14 and is kept in a state where it can move freely. Also, the upper protector 2 is temporarily fixed with only the right inner surface joined to the right inner flap 14.

[0031] Then, from the state of the upper protector 2 temporarily fixed in the same state as step 3, the male surface 131 of the hook-and-loop fastener on the inner surface of the left outer flap 13 is overlapped and joined to the female surface 22 of the hook-and-loop fastener on the left outer surface of the upper protector 2, and the female surface 151 of the hook-and-loop fastener on the inner surface of the right outer flap 15 is overlapped and joined to the female surface 24 of the hook-and-loop fastener on the right outer surface of the upper protector 2, and the installation of the upper protector 2 is completed (see FIG. 1). The upper protector 2 is joined by the hook-and-loop fastener with the left side held by the left outer flap 13 and the right side sandwiched between the right inner flap 14 and the right outer flap 15, so there is no risk of it coming off the upper cover 11, and it does not shift position relative to the upper cover 11.

[0032] In order to prevent the instep protector 2 from coming off unexpectedly, it is desirable that the left side is sandwiched between the left inner flap 12 and the left outer flap 13, and the right side is sandwiched between the right inner flap 14 and the right outer flap 15, and both the inner and outer sides are fastened to the hook-and-loop fasteners, but the right inner flap 14 restrains the upper 11, reducing the freedom of the foot. On the other hand, if the instep protector 2 is worn from the state shown in Fig. 7, the left inner side of the instep protector 2 is no longer joined, and the stability of the wear is slightly reduced, but the right inner flap 14 no longer restrains the upper 11, providing the advantage of ensuring the freedom of the foot. In this way, the safety shoes 1 of this example have the advantage that the wear state of the instep protector 2 can be selected in two ways according to the freedom of the foot. [Explanation of symbols]

[0033] 1 Safety shoes (with toe crotch) 11 Instep 111 Male surface of hook-and-loop fastener (outer left surface of upper) 12 Left inner flap 121 Male surface of hook-and-loop fastener (outer surface) 13 Left outer flap 131 Male surface of hook-and-loop fastener (inner surface) 14 Right inner flap 141 Female side of hook-and-loop fastener (inner left side) 142 Female side of hook-and-loop fastener (outer left side) 143 Female side of hook-and-loop fastener (outer right side) 15 Right outer flap 151 Male surface of hook-and-loop fastener (inner surface) 2. Instep protector 21 Female side of hook-and-loop fastener (inner left side) 22 Female side of hook-and-loop fastener (outer left side) 23 Male surface of hook-and-loop fastener (inner right side) 24 Female side of hook-and-loop fastener (outer right side)

Claims

1. In safety shoes with removable instep protectors, The left side is fixed, and the right side is freely openable and closable. The left side inner flap and the left side outer flap are provided on the left side outer surface of the upper, and the right side is fixed, and the left side is freely openable and closable. The right side is fixed, and the left side is freely openable and closable. The right side inner flap and the right side outer flap are provided on the right side outer surface of the upper. The instep protector has a male or female hook-and-loop fastener on the left inner surface, left outer surface, right inner surface, and right outer surface. The left inner flap has a hook-and-loop fastener on its outer surface that is connected to the hook-and-loop fastener on the left inner surface of the instep protector. The left outer flap has a hook-and-loop fastener on its inner surface that is connected to the hook-and-loop fastener on the left outer surface of the instep protector. The right inner flap has a hook-and-loop fastener on its outer surface that is connected to the hook-and-loop fastener on the right inner surface of the instep protector. The right outer flap has a hook-and-loop fastener on its inner surface that is attached to the hook-and-loop fastener on the right outer surface of the instep protector. The safety shoes are characterized by:

2. The right inner flap is a fastening belt that crosses the instep of the foot, and a male or female surface of a hook-and-loop fastener is provided on the left outer surface of the instep. The right inner flap has a hook-and-loop fastener female or male surface on the left inner surface that is joined to the hook-and-loop fastener male or female surface on the left outer surface of the upper, and a hook-and-loop fastener female or male surface on the right outer surface that is joined to the hook-and-loop fastener male or female surface on the right inner surface of the upper protector.

2. The safety shoe according to claim 1.

3. The right inner flap is a fastening belt that crosses the instep, and has a hook-and-loop fastener female or male surface on the left inner surface that joins with the hook-and-loop fastener male or female surface on the outer surface of the left inner flap, a hook-and-loop fastener female or male surface on the left outer surface that joins with the hook-and-loop fastener male or female surface on the inner surface of the left outer flap, and a hook-and-loop fastener female or male surface on the right outer surface that joins with the hook-and-loop fastener male or female surface on the inner surface of the right outer flap.

2. The safety shoe according to claim 1.

Images