JPH0541406U - Safety shoes with toe plate - Google Patents

Abstract

(57) [Abstract] [Purpose] To protect the toes even when a downward pressing force is applied to the toe part by embedding a toe plate holding plate made of a hard material in the outsole. It is intended to provide safety shoes that can more reliably maintain the empty space. [Structure] A toe holder holding plate 7 made of a hard material is embedded in the front bottom 6 in a state corresponding to part or all of the lower surface of the folded-back bottom portion 2 of the toe core.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a safety shoe having improved pressure resistance against an external pressing force applied to the toe core portion of the safety shoe due to a fall of a heavy object or the like.

[0002]

[Prior Art]

 In conventional safety shoes, a toecap made of metal or hard plastic is arranged on the inner surface of the instep, and the lower edge of this toecap is folded back along the outer peripheral edge of the front sole of the shoe. The structure was such that the folded bottom part of the toecap was directly supported by the upper surface of the outsole. Regarding the material of the outsole, recently, materials with rich cushioning properties such as rubber and highly expanded polyurethane have been used to improve the feeling of use, and the ground contact surface part of the outsole is used to improve wear resistance. Ingenuity has been elaborated such as using low-foam polyurethane.

[0003]

[Problems to be solved by the device]

 In the conventional safety shoes as described above, the folded bottom surface of the toecap is placed on the upper surface of the outsole such as rubber with high cushioning property and highly foamed polyurethane while sandwiching the folded edge of the instep. Was becoming. Therefore, when a vertical pressing force is applied from above the toecap, the pressing force is diffused through the flexible outsole material in the direct downward direction, the oblique downward direction, the horizontal direction, and all directions of the outsole material. It was the result of going. Of these, the pressing force diffused in the horizontal central direction has the effect of causing the outsole and insole to fold upward in the shoe because there is no other place to go. This overlaps with the action of the top plate itself of the toe flexing slightly downward due to the downward pressing force, ensuring a sufficient volume inside the toe to protect the toes of the toes. Was difficult. Therefore, there was a problem in that the original function of safety shoes, which fully protects the toes, is slightly impaired in the event of heavy objects falling to the toes, which is most likely to occur at work sites. The problem to be solved by the present invention is to ensure a sufficient space for protecting the toe even when a vertical pressing force is applied from above the toecap. To provide shoes.

[0004]

[Means for Solving the Problems]

 According to the present invention, in a safety shoe having a toecap, a toecap holding plate made of a hard material is embedded in the outsole in a state corresponding to a part or all of the bottom surface of the folded bottom surface of the toecap. With the featured safety shoes with toecap holding plates, we are trying to solve the above problems.

[0005]

[Action]

 When a vertical pressing force is applied from above the toecap, the pressing force is applied through the toecap holding plate embedded inside the front bottom so as to be in contact with the lower surface of the folded bottom surface of the toecap. By transmitting the downward force, it is possible to prevent the pressing force from diffusing in the horizontal direction, diagonally downward direction, etc., and as a result, it is possible to prevent the insole and the outsole from rising up in the safety shoes. It can prevent and improve the toe protection function of safety shoes.

[0006]

【Example】

 An embodiment will be described based on FIG. FIG. 1 shows a vertical cross section of the tip of a safety shoe having a toecap and a toecap holding plate incorporated therein. Reference numeral 1 is a toecap, 2 is a folded bottom surface of the toecap. FIG. 2 shows the entire toe box and the folded bottom surface of the toe box. The toecap is formed using a rigid hard material such as metal or hard plastic, and it is assumed that it has enough strength to withstand the pressing force. Reference numeral 3 denotes the upper, 4 the backing cloth, 5 the midsole, and 6 the front sole. The outsole is mainly made of polyurethane foam, which has excellent shock absorption. Reference numeral 7 denotes a toe core holding plate of the present invention, which is embedded in the outsole using a hard material such as plywood, wood, metal, or plastic. Between the upper surface of this toe core holding plate and the lower surface of the folded bottom surface of the toe box, there is an instep. The folded edge of the leather 3 is clamped. The toe holder holding plate may correspond to only a part of the folded bottom surface of the toe core as shown in 7a of FIG. 3 or may correspond to the entire folded bottom surface of the toe core as shown in 7b of FIG. .. The larger the corresponding area between the folded bottom surface of the toe box and the toe box holding plate, the greater the effect of the present invention. The thickness of the toe box holding plate can be set to any dimension within the range from the bottom surface of the folded bottom surface of the toe box to the ground contact surface of the outsole, but the thicker the present invention, the better. Contribute to improving the effect of. Generally, the appropriate thickness is about 1 to 9 mm. It is desirable that the planar shape of the toecap holding plate corresponds to the folded bottom surface of the toecap, and its width dimension is generally about 5 to several tens of mm.

An embodiment will be described with reference to FIG. A more flexible midsole 6a made of high-foamed polyurethane or the like and an outsole 6b made of low-foamed polyurethane or the like to form the outsole 6 and the lower surface of the toecap holding plate 7. The toecap holding plate 7 is embedded in the midsole 6a so that the core contact the upper surface of the outer sole 6b. By embedding in this way, the vertical pressing force that has descended along the toe core holding plate is transmitted to the hard outsole, and that pressing force is released to the ground as it is, so that the effect of the present invention is further exerted. Can be made However, the lower surface of the toecap holding plate 7 does not necessarily have to contact the upper surface of the outsole 6b as long as the effect of transmitting the pressing force can be expected.

[0008]

[Effect of the device]

 In conventional safety shoes, as shown in Fig. 6, when downward pressure is applied by falling objects from above, the pressure on the folded bottom surface of the toe is diffused in all directions such as vertical and horizontal. Of these, since there is no other place for horizontal pressing force, it acts to push up the outsole and the insole upward in the shoe. 5a shows the position of the insole during normal operation, and 5b shows the position of the insole when pushed up. The downward pressing force also acts to bend the upper surface of the toecap slightly downward. 4a is the position of the backing cloth at the normal time, and 4b is the position of the backing cloth when the toe core is bent. In such a state, it is difficult to sufficiently protect the toes of the shoe wearer. However, if the toe core holding plate 7 is installed below the bottom surface of the toe core as in the present invention, the pressing force applied in the downward direction can be released through the holding plate as it is, and the force can be released in the horizontal direction. It can be prevented from diffusing, and thus the rising phenomenon of the outsole and the insole in the shoe can be prevented. Therefore, even if a pressing force is applied, the space between the toecap and the insole can be stably secured, and the wearer's toes can be protected more thoroughly. Further, the effect can be further enhanced by providing the outer sole of the safety shoe with a two-layer sole structure having a flexible portion and a hard portion so that the lower surface of the toecap holding plate abuts on the upper surface of the hard portion of the outer sole. Conventionally, synthetic rubber, which has high hardness and is difficult to compress, has been used as the material used for the outer soles of safety shoes, but recently foamed polyurethane that excels in shock absorption has been demanded for its soft feel and health performance. It is in the situation where the adoption of such as is mainstream. After the introduction of materials such as foamed polyurethane that are easily compressed, each safety shoe manufacturer has been struggling to secure a space after pressurizing the toe box. By adopting the present invention, this pain can be solved successfully.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a toe portion in a state in which a toecap holding plate of the present invention is incorporated into a safety shoe.

FIG. 2 is a perspective view of a safety shoe toecap seen from a diagonally lower rear portion.

FIG. 3 is a perspective view of a toecap holding plate.

FIG. 4 is a perspective view of another embodiment of the toecap holding plate.

FIG. 5 is a vertical cross-sectional view of a toe portion in a state in which the toecap holding plate of the present invention is incorporated into a safety shoe having a two-layer sole structure.

FIG. 6 is a vertical cross-sectional view of a toe portion in a state where a toe core of a conventional example is incorporated in safety shoes.

[Explanation of symbols]

 1 Toecap 2 Folded bottom surface of 3 toecap 3 Instep 4 Back cloth 4a, b Position of back cloth 5 Insole 5a, b Position of insole 6 Outer bottom 6a Midsole 6b Outsole 7 Toecap holding plate 7a, b Tip Wick holding plate

Claims (1)

[Scope of utility model registration request] 1. A safety shoe having a toecap, wherein a toecap holding plate made of a hard material is embedded in the outsole so as to correspond to a part or all of the lower surface of the folded bottom surface of the toecap. Safety shoes with a toecap holding plate.