JP2019188635A - Safety shoes - Google Patents

Abstract

To provide safety shoes which are reuseable by being recovered, cleaned and dried by a professional agent or the like after used for a certain period, and hardly damaged even when washed using a washing machine.SOLUTION: A safety shoe 100 comprises: an upper 10; a sole 20; a toe protector 30; and a covering layer 40 which covers the toe protector 30. The toe protector 30 is disposed on the upper 10, and covered by the covering layer 40 disposed opposite to an upper 10 side. The covering layer 40 and the sole 20 are an integrally molded article.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a safety shoe in which a toe can be protected by a protector.

Conventionally, safety shoes provided with a toe protector (toe core) for protecting a toe part of a foot from falling heavy objects have been proposed.
For example, the following Patent Document 1 has a double structure in which a lining material (described as a back cover in Patent Document 1) is provided inside a cover (described as a front cover in Patent Document 1), Safety shoes are proposed in which a toe protector is placed between them. Such safety shoes are obtained by superposing the upper and the lining material, stitching them except the toe portion, and forming a large number of loops made of thread on the lower periphery of the toe portion of the upper portion and the strings inserted through the loops. I have. Such a safety shoe manufacturing method involves mounting a toe protector between the upper and the lining material in a state where the upper is suspended in the last mold, and then narrowing down the lower peripheral edge of the toe by the above-described string. Although it is a safety shoe having a toe protector that includes a step of closely attaching the cover to the last mold, the production efficiency is improved as compared with the conventional case.

Japanese Patent Laid-Open No. 07-067672

  By the way, safety shoes used for business use, for example, in a clean room that manufactures industrial products such as electronic equipment and food medical products, etc. Sometimes used. Safety shoes collected by specialists are often washed in a washing machine having a drum-type washing tub. At this time, centrifugal force is applied to the safety shoes by the rotation in the washing tub. In the safety shoe with a toe protector attached to the toe part and biased in weight, the toe side having a relatively large weight repeatedly collides with the inner surface of the washing tub. As a result, there was a problem that the toe side of the safety shoe was easily damaged.

  The present invention has been made in view of the above-described problems. That is, the present invention provides safety shoes that are not easily damaged during washing using a washing machine.

  A safety shoe according to the present invention includes an upper, a shoe sole, a toe protector, and a covering layer that covers the toe protector, and the toe protector is disposed on the upper and the upper cover. The covering layer is covered with the covering layer disposed on the side opposite to the side, and the covering layer and the shoe sole are integrally formed.

In the safety shoe of the present invention, the covering layer that covers the toe protector is formed of the same member as the shoe sole. Therefore, even if the toe side of the safety shoe of the present invention repeatedly contacts the inner surface of the washing tub when being washed by the washing machine, it is difficult to break. Moreover, since the coating layer and the shoe sole are integrally formed, there is no physical boundary between them. Therefore, the safety shoe of the present invention is difficult to tear at the boundary between the coating layer and the shoe sole during use or washing, and has high durability on the toe side.
In addition, the manufacturing process can be simplified, and the production efficiency can be further improved.

(A) is the perspective view of the safety shoes of 1st embodiment of this invention, (b) is the perspective view which observed the toe protector used for 1st embodiment from the lower surface. It is II-II sectional drawing of the safety boot shown in FIG. It is explanatory drawing explaining an example of the manufacturing method of the safety shoes shown in FIG. It is a perspective view of the safety shoes of a second embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are denoted by the same reference numerals, and redundant description will be appropriately omitted. In the present invention, the vertical direction means the vertical direction when the safety shoes are placed on the floor unless otherwise specified, and the vertical direction is the same as the vertical direction.

<First embodiment>
Below, 1st embodiment of the safety shoes of this invention is described using FIGS. 1-3.
FIG. 1A is a perspective view of the safety shoe 100 according to the first embodiment of the present invention, and FIG. 1B is a perspective view of the toe protector 30 used in the first embodiment observed from the lower surface. . 2 is a sectional view of the safety shoe 100 shown in FIG. 1 taken along the line II-II. The cross-section shown in the II-II cross-sectional view is in the direction connecting the tip 110 (see FIG. 2) which is the toe side end of the safety shoe 100 and the base end 120 (see FIG. 2) which is the heel side end. It is a longitudinal section formed by cutting in the longitudinal direction. FIG. 3 is an explanatory view for explaining an example of a manufacturing method of the safety shoe 100 shown in FIG.

First, the outline | summary of the safety shoes 100 of this embodiment is demonstrated.
As shown in FIG. 1A, the safety shoe 100 includes an upper 10, a shoe sole 20, a toe protector 30, and a covering layer 40 that covers the toe protector 30. Protect 100 user's toes. As shown in FIG. 2, the toe protector 30 is disposed on the upper 10 and is covered with a coating layer 40 disposed on the side opposite to the upper 10 side. In the present embodiment, the coating layer 40 is configured integrally with the shoe sole 20. That is, in the safety shoe 100, the covering layer 40 and the shoe sole 20 are an integrally molded product.

In the safety shoe 100 having the above-described configuration, the toe protector 30 is sandwiched between the upper 10 and the covering layer 40 and is stably disposed, and the toe of the user of the safety shoe 100 can be well protected. . The covering layer 40 is formed as a single unit by the same member as the sole 20. In other words, the covering layer 40 is made of a shock-absorbing member suitable for the shoe sole 20. When centrifugal force is applied to the safety shoe 100 due to the rotation of the washing tub during washing, the covering layer 40 repeatedly collides with the inner wall of the washing tub with the weight of the toe protector 30, but the covering layer made of the same member as the shoe sole 20 is used. 40 is hard to break.
In the safety shoe 100, the covering layer 40 and the shoe sole 20 are integrally formed, so that there is substantially no physical boundary between the covering layer 40 and the shoe sole 20. Therefore, the boundary between the coating layer 40 and the shoe sole 20 is difficult to tear during use or cleaning. From this point of view, the safety shoe 100 is prevented from being damaged and has high durability.

Next, the safety shoe 100 of this embodiment will be described in detail.
The safety shoes 100 are provided with the upper 10 which mainly comprises the part which puts a foot like a normal shoe. The upper 10 is a so-called upper. The members constituting the upper 10 are suitable for use from members that can be used for general shoe uppers such as synthetic resins such as polyurethane and polyvinyl chloride, synthetic leather, natural leather, or woven fabric such as canvas fabric. Is selected. The upper 10 includes an aspect substantially composed of one member and an aspect composed of a combination of two or more members. From the viewpoint of bondability with the coating layer 40 described later, the upper 10 is preferably composed of a member containing a synthetic resin similar to the synthetic resin constituting the coating layer 40. As a more specific example, an embodiment in which the upper 10 and the covering layer 40 (and the shoe sole 20) are both made of a polyurethane-based resin is one of the preferred examples of the present embodiment.

  As shown in FIG. 1, the upper edge 12 of the upper 10 in the present embodiment is designed to be lower than the user's ankle 410. However, the present invention is not limited to this, and includes deep boots in which the upper end edge 12 is designed at a height exceeding the ankle 410 and boots-type safety shoes. The upper edge 12 of the upper 10 defines a upper opening 18 which is an opening through which a foot is taken in and out.

  The thickness of the upper 10 is not particularly limited, and may be a uniform thickness as a whole, or may be partially thick or thin. The average thickness of the upper 10 is generally, for example, about 1.0 mm or more and 4.5 mm or less, and when the upper 10 is substantially composed of one piece as in the present embodiment, The average thickness is preferably in the range of 1.1 mm to 1.5 mm, and more preferably 1.2 mm to 1.3 mm.

The toe protector 30 in the present embodiment is arranged on the upper 10 and a lining material is provided on the inner side of the upper 10 to sandwich the toe protector 30 with the upper 10 as shown in Patent Document 1. There is no need to provide it.
When the toe protector 30 is sandwiched between the upper 10 and the lining material, it takes time to dry the moisture soaked in from the lining material side after cleaning, but in this embodiment, the drying time is shortened compared to that. . Therefore, the safety shoe 100 can be configured by the upper 10 on the innermost surface on the toe side. In the present embodiment, the entire innermost surface of the safety shoe 100 is substantially constituted by the upper 10. By omitting the lining material, it is preferable because the drying time on the inner surface side of the safety shoe 100 is shortened after the safety shoe 100 is washed.

  In addition, description of this embodiment does not prohibit providing a lining material in the safety shoes of this invention. Even when the lining material is provided in the safety shoe of the present invention, since the toe protector is not arranged between the upper and the lining material, the drying time is longer than that of the safety shoe shown in Patent Document 1. It is shortened. As another aspect of the present invention, when the lining material is provided inside the upper 10, the average thickness of the upper 10 shown above indicates the sum of the thickness of the upper 10 and the lining material.

  A toe protector 30 having a curved shape so as to cover the toe portion of the foot is disposed on the front end side of the upper 10. The toe protector 30 is sandwiched between the upper 10 and a coating layer 40 provided on the opposite side of the upper 10 via the toe protector 30. The toe protector 30 is appropriately hard and has a predetermined thickness that can protect the toe. Components of the toe protector 30 are polypropylene, polyethylene, nylon, poly (ethylene terephthalate), polybutylene terephthalate, polystyrene, AS (acrylonitrile styrene) resin, ABS (acrylonitrile butadiene styrene) resin, PPS (polyphenylene sulfite), PEI (poly). Examples thereof include thermoplastic synthetic resins such as etherimide) and PEEK (polyetheretherketone), reinforced resins in which reinforcing members such as polycarbonate, polyamide, and glass fiber are mixed, or metals. In particular, a thermoplastic synthetic resin is light and easily obtains a desired strength, and thus is preferable as a constituent member of a toe protector.

  As shown in FIG. 1B and FIG. 2, the toe protector 30 in the present embodiment includes a folding part 34 along the shoe sole 20, a toe side protection part 36 rising upward from the folding part 34, and a toe side protection part 36. And the toe upper surface protection part 38 that is continuous from the toe to cover the toe of the user's foot. The folding part 34 is located between the upper 10 and the shoe sole 20 and terminates in the vicinity of the periphery of the shoe sole 20. The entire toe protector 30 is disposed between the covering layer 40 or the shoe sole 20 and the upper 10 and has good placement stability. Further, the toe protector can be well protected by covering the entire toe. it can.

A longitudinal section of the safety shoe 100 of the present embodiment is shown in FIG. As described above, the longitudinal section is a surface formed by cutting in the longitudinal direction along the direction connecting the distal end 110 that is the toe side end of the safety shoe 100 and the proximal end 120 that is the heel side end. It is.
An edge 32 on the base end 120 side of the toe protector 30 is covered with the covering layer 40, and an edge 42 on the base end 120 side of the covering layer 40 is joined to the upper 10. The covering layer 40 in the present embodiment covers the toe protector 30 and terminates so that the edge 42 of the covering layer 40 is located between the toe side of the safety shoe 100 and the upper opening 18.
The distance from the edge 32 to the edge 42 observed in the longitudinal section indicates the bonding width at which the coating layer 40 is bonded to the upper 10. The distance from the end edge 32 to the end edge 42 is not particularly limited, but from the viewpoint of achieving a good balance between the weight reduction of the safety shoe 100 and the maintenance of the covering state of the toe protector 30, the distance is 3 mm. It is preferably 20 mm or less, more preferably 3 mm or more and 10 mm or less, and further preferably 4 mm or more and 7 mm or less. When the distance is 3 mm or more, the covering layer 40 is hardly peeled off from the upper 10, and when the distance is within 20 mm, the weight of the covering layer 40 is moderately suppressed, and the weight of the safety shoe 100 including the covering layer 40 is reduced. Can be kept within a range that does not become excessive.

On the toe side of the safety shoe 100, the coating layer 40 extends from the shoe bottom 20 toward the top surface of the toe. The covering layer 40 and the shoe sole 20 are integrally formed and are configured without physical breaks. Both are comprised by the same member.
Examples of the members constituting the covering layer 40 and the shoe sole 20 include polyurethane resins such as thermoplastic polyurethane, one-component polyurethane, two-component polyurethane, vinyl chloride resin, nylon, natural rubber, synthetic rubber, heat It can be appropriately selected from members suitable for shoe soles such as plastic rubber or a mixture thereof. An example of a method for forming the covering layer 40 and the shoe sole 20 in a single unit is an injection molding method. That is, the covering layer 40 and the shoe sole 20 may be a series of injection molded products that are injection-molded. Details of the manufacturing method of the safety shoe 100 will be described later.

  As another means for covering the toe protector 30 disposed on the upper 10 from the upper surface side, an independent covering member is prepared in advance, and the covering member is sutured to the upper 10 via the toe protector 30. A means of attaching by doing so can also be considered. However, in this case, there are disadvantages in the manufacturing process such that the number of parts for configuring the safety shoe 100 is increased and the shoe sole 20 and the covering layer 40 cannot be molded simultaneously. In addition, the safety shoes constituted by the different means may damage the stitched portion of the sewn covering member on the toe side where there is a possibility of repeated collisions during washing or use.

  The thickness of the covering layer 40 in the present embodiment is designed to be relatively large with respect to the thickness of the upper 10 from the viewpoint of preventing breakage of the toe side of the safety shoe 100 and improving safety. The upper 10 is a main part constituting the safety shoe 100 and is designed to have a moderately small thickness in consideration of lightness and comfort. On the other hand, the coating layer 40 provided on the toe portion important for protecting breakage and safety is designed to have a relatively large thickness relative to the thickness of the upper 10. As a result, the safety shoes 100 are appropriately maintained in light weight while ensuring the safety on the toe side.

  For example, the average thickness of the cover layer 40 is preferably configured to be greater than the average thickness of the upper 10, and the minimum thickness dimension 44 of the cover layer 40 is configured to be greater than the maximum thickness dimension 14 of the upper 10. More preferably. The average thickness here refers to a value obtained by adding the thickness dimension of the minimum thickness portion and the thickness dimension of the maximum thickness portion and dividing by two. In addition, the minimum thickness dimension refers to a dimension obtained by measuring a place having the smallest thickness, and the maximum thickness dimension designates a dimension obtained by measuring a place having the largest thickness.

  The member constituting the covering layer 40 and the member constituting the toe protector 30 may be the same or different. Moreover, it is preferable that a surface treatment layer (not shown) is provided on the surface of the toe protector 30. Although it does not specifically limit as a surface treatment agent, when forming the coating layer 40 by injection molding, a surface treatment layer is functioned as an adhesive layer, and, thereby, the coating layer 40 and the toe protector 30 are interposed through the surface treatment layer. Should just be able to be joined well. For example, moisture curable urethane can be used. As a result, the toe protector 30 is prevented from moving between the covering layer 40 and the upper 10. In particular, it is effective when the toe protector 30 and the member of the coating layer 40 are different.

Here, the main member constituting the coating layer 40 means a member having the largest blending ratio among the members constituting the coating layer 40. Similarly, the main member constituting the toe protector 30 means a member having the most blending among the members constituting the toe protector 30. For example, in the member constituting the coating layer 40, when the polyurethane is contained in an amount exceeding 50% by mass, the polyurethane is the main member. As another example, even if the blending ratio of the polyurethane is less than 50% by mass, If the blending amount is the largest in comparison with the blending member, the polyurethane is the main member.
The difference between the main member constituting the covering layer 40 and the main member constituting the toe protector 30 means that they are not similar members, for example, one main member is a polypropylene resin, and the other When the main member is a polyurethane-based resin, it is understood that the two main members are different.

  The shoe sole 20 is a part on the sole side of the safety shoe, and is a so-called sole. In the present embodiment, the shoe sole 20 is a so-called outsole including the ground contact surface 130. As a different aspect not shown, the shoe sole 20 may have a multilayer structure including an intermediate layer (so-called midsole) between the outsole and the midsole (the midsole 50). In the aspect in which the shoe sole 20 includes a midsole, for example, the shoe sole 20 that is a midsole and the covering layer 40 are integrally formed, and then an outsole having an installation surface is provided on the midsole. it can.

  In the safety shoe 100 of the present embodiment, an insole 50 is provided on the shoe sole 20. A user's feeling of use can be improved by arrangement of the insole 50. The insole 50 is disposed on the upper surface side of the bottom portion 13 of the upper 10, and the upper 10 and the insole 50 constitute a bag foot portion by sewing or bonding. The bottom portion 13 of the upper 10 indicates a portion that is folded from the side surface of the upper 10 toward the shoe sole 20.

  The insole 50 is composed of one or more selected from, for example, woven fabric, nonwoven fabric, knitted fabric, synthetic resin leather, synthetic resin sheet, or synthetic leather. Further, an insole (insole) may be inserted into the upper surface side of the insole 50 as necessary.

  As shown in FIG. 2, on the toe side of the safety shoe 100 of the present embodiment, the rising region 150 that rises upward from the ground contact surface 130 of the safety shoe 100 toward the front side surface is configured to be significantly curved. The safety shoe 100 is provided with not only the upper 10 but also the toe protector 30 and the covering layer 40 having a moderate thickness on the tip 110 side of the toe. For this reason, the force at the tip of the toe of the user wearing the safety shoe 100 is difficult to be transmitted to the tip 110 of the safety shoe 100 and may easily be struck forward during walking. Therefore, it is preferable that the toe spring 155 is sufficiently secured to enable a smooth walking motion. Here, the toe spring 155 means the distance from the floor 160 to the leading edge rising portion 150 of the shoe sole 20 when the shoe is installed on the horizontal floor 160. The leading edge rising portion 150 of the shoe sole 20 means a portion that begins to curve upward from the shoe sole 20 toward the entire surface side of the safety shoe 100. More specifically, the toe spring 155 is preferably in the range of 15 mm to 25 mm, and more preferably in the range of 18 mm to 20 mm. If the toe spring 155 is less than 15 mm, it is difficult to sufficiently prevent the user of the safety shoe 100 from stroking during walking, and if it exceeds 25 mm, the walking balance may be lost.

  In the relationship between the toe spring 155 and the overall length of the safety shoe 100, the ratio (%) of the height (mm) of the toe spring 155 to the overall length (mm) of the safety shoe 100 is preferably 5% or more and 10% or less. More preferably, it is 5% or more and 8% or less. By designing the height of the toe spring within the above range, it is possible to prevent the user of the safety shoe 100 from hitting while walking. For example, for a safety shoe 100 having a size of 26 cm, the overall length may be set to 285 mm and the toe spring may be set to around 20 mm. However, the above examples are not intended to limit the present invention, and even for safety shoes of the same size, the overall length may be appropriately designed depending on the thickness of the sole and the thickness of the upper 10 at the rear end of the shoe. Accordingly, the height of the toe spring can be changed as appropriate.

  Next, an example of a method for manufacturing safety shoes 100 will be described with reference to FIG. FIG. 3 shows an injection molding apparatus 300 for manufacturing safety shoes, in which a side mold on the front side of the sheet of the pair of left and right side molds 310 is omitted, and a bottom is formed along the boundary surface of the right and left side molds. In a state where the mold 320 is cut, the last mold 340 in which the upper 10 is suspended is viewed from the side.

  The upper 10 to which the insole 50 not shown in FIG. 3 is attached is suspended from the last mold 340, and then the toe protector 30 is attached to the upper 10. At this time, the toe protector 30 temporarily fixes the upper 10 appropriately. Thereafter, the last mold 340 is moved to a predetermined position, and the side mold 310 and the bottom mold 320 are clamped. The space provided between the bottom mold 320 and the last mold 340 and the space provided between the site mold 310 and the last mold 340 are continuous, and a space that imitates the shoe sole 20 and the coating layer 40. 330 is constituted.

  After each mold is clamped as described above, molten resin is injected into the space 330 from the injection port 312 provided in the side mold 310, and injection molding is performed to form the shoe sole 20 and the covering layer 40 in a series. . In the present embodiment, the toe protector 30 is completely covered with the covering layer 40 and the shoe sole 20, and the outer edges of the covering layer 40 and the shoe sole 20 are joined to the upper 10. The toe protector 30 placed between the covering layer 40 has good placement stability. In order to exhibit better arrangement stability, a surface treatment layer may be provided on the surface of the toe protector 30 as described above.

  After the injected resin is cured, the side mold 310 is separated in the left-right direction, the last mold 340 is pulled upward, and then the safety shoes 100 are removed from the last mold 340, whereby the safety shoes 100 are manufactured. In addition, since the safety shoes 100 are provided with the toe protector 30 and the coating layer 40, the thickness on the toe side is larger than that of the conventional safety shoes. Therefore, when the last mold 340 is pulled upward after injection molding, the last mold 340 can be lifted smoothly by separating the pair of side molds to a distance equal to or greater than the maximum width of the safety shoe 100.

  However, when it is difficult to secure a space that can sufficiently separate the pair of side molds 310 in the left-right direction as in the above-described injection molding apparatus 300, the configuration of the injection molding apparatus may be changed as appropriate. For example, as a different injection molding apparatus (not shown), a mold (hereinafter referred to as an additional mold) corresponding to the toe upper surface protection part 38 of the toe protector 30 is provided separately from the side mold 310, and after injection molding, the side mold It is also possible to separate the 310 in the left and right directions and move the additional mold by pulling it upward to ensure smooth movement upward of the last mold 340 with the safety shoes 100 attached.

  When the safety shoe 100 is manufactured using the injection molding technique as described above, since the shoe sole 20 and the covering layer 40 are integrally formed, both can be formed in one manufacturing process. Therefore, the safety shoe 100 has a configuration that is easy to manufacture.

<Second embodiment>
Below, 2nd embodiment of the safety shoes of this invention is described using FIG. FIG. 4 is a perspective view of a safety shoe 200 according to the second embodiment of the present invention. The safety shoe 200 is configured in the same manner as the safety shoe 100 described above except that a skirt portion 60 described later is provided.

  The safety shoe 200 according to this embodiment is designed such that the upper edge 12 of the upper 10 is lower than the user's ankle 410, and the user's ankle 400 is located above the upper edge 12. The skirt part 60 which covers is provided. The safety shoes 200 can reduce the overall weight of the shoe as compared with a boots type in which the upper 10 extends to the periphery of the ankle 400. That is, the safety shoes 200 can protect the user's ankle 400 without impairing the lightness.

  In the present embodiment, the skirt portion 60 has a lower end portion that is sewn and fixed to the vicinity of the upper end edge 12 of the upper 10 so that the skirt portion 60 can be fixed to the ankle 400 at a predetermined position. A fixing member 62 is provided. The fixing member 62 is exemplified by a string 66 inserted through a through hole 64 formed in the circumferential direction at the upper end portion of the skirt portion 60 as illustrated. Moreover, as a fixing member 62 having a different form not shown, a hook-and-loop fastener may be attached to the upper end portion of the skirt portion 60 so that the length can be adjusted in the circumferential direction of the upper end portion. Although FIG. 4 shows an aspect in which the skirt portion 60 directly covers the ankle 400, the skirt portion 60 can also indirectly cover the ankle 400 from above the working hood.

  The skirt part 60 is comprised from a woven fabric, a nonwoven fabric, a resin film etc., for example. As a constituent member of the skirt part 60, a member whose weight per unit area is lighter than the upper 10 is preferable, and more preferably impermeable. The water impermeability referred to here may be either a physical property of the constituent member itself of the skirt 60 or a physical property imparted to the surface of the water permeable member by a surface treatment such as a water repellent treatment.

  In FIG. 4, although the upper end part of the skirt part 60 has shown the aspect extended to the upper part of the ankle 410 slightly, the safety shoes 200 are not limited to this, The upper end part of the skirt part 60 is a user's knee. It may extend near the bottom or above the knee.

The above embodiment includes the following technical idea.
(1) An upper, a shoe sole, a toe protector, and a covering layer that covers the toe protector,
The toe protector is disposed on the upper and is covered with the covering layer disposed on the side opposite to the upper side,
The safety shoe, wherein the covering layer and the shoe sole are integrally formed.
(2) In the longitudinal section formed by cutting in the longitudinal direction along the direction connecting the distal end which is the toe side end of the safety shoe and the proximal end which is the heel side end,
The safety shoe according to (1), wherein a distance from the base end side edge of the toe protector to the base end side edge of the coating layer is 3 mm or more and 20 mm or less.
(3) The safety shoe according to (1) or (2), wherein a surface treatment layer is provided on a surface of the toe protector.
(4) The safety shoe according to any one of (1) to (3), wherein a toe spring of the safety shoe is in a range of 15 mm to 25 mm on a toe side of the safety shoe.
(5) The upper end edge of the upper is designed so as to be lower than the user's ankle, and the skirt portion covering the user's ankle is provided above the upper end edge. (1) The safety shoe according to any one of (4).
(6) The toe protector includes a folded portion along a shoe sole, a toe side protection portion that rises upward from the folded portion, and a toe upper surface protection portion that continues from the toe side protection portion,
The safety shoe according to any one of (1) to (5), wherein the entire toe protector is disposed between the covering layer or the shoe sole and the upper.
(7) The safety shoe according to any one of (1) to (6), wherein a minimum thickness dimension of the covering layer is larger than a maximum thickness dimension of the upper.
(8) The safety shoe according to any one of (1) to (7), wherein the upper constitutes an innermost surface on a toe side of the safety shoe.

DESCRIPTION OF SYMBOLS 10 ... Upper 12 ... Upper edge 13 ... Bottom 14 ... Maximum thickness dimension 16 ... Inner surface 18 ... Upper opening 20 ... Shoe bottom 30 ... Toe protector 32 42 ... Edge 34 ... Folding part 36 ... Toe side surface protection part 38 ... Toe top surface protection part 40 ... Cover layer 44 ... Minimum thickness dimension 50 ... Insole 60 .... Skirt 62 ... Fixing member 64 ... Through hole 66 ... String 100, 200 ... Safety shoes 110 ... Tip 120 ... Base end 130 ... Grounding surface 140 ... Front side surface 150 ... rising edge 155 ... toe spring 160 ... floor 300 ... injection molding device 310 ... side mold 312 ... inlet 320 ... bottom mold 330 ... space 340 ... Last mold 400 ... Ankle 410 ... ankle

Claims (5)

An upper, a shoe sole, a toe protector, and a covering layer covering the toe protector;
The toe protector is disposed on the upper and is covered with the covering layer disposed on the side opposite to the upper side,
The safety shoe, wherein the covering layer and the shoe sole are integrally formed. In the longitudinal section formed by cutting in the vertical direction along the direction connecting the distal end that is the toe side end of the safety shoe and the proximal end that is the heel side end,
The safety shoe according to claim 1, wherein a distance from an end edge on the base end side of the toe protector to an end edge on the base end side of the covering layer is 3 mm or more and 20 mm or less. The safety boot according to claim 1 or 2, wherein a surface treatment layer is provided on a surface of the toe protector. The safety shoe according to any one of claims 1 to 3, wherein a toe spring of the safety shoe is in a range of 15 mm to 25 mm on a toe side of the safety shoe. The upper end edge of the upper is designed to be lower than the user's ankle, and a skirt portion that covers the user's ankle is provided above the upper end edge. 5. The safety shoe according to any one of 4.

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