JPH0582302U - Toecap for reinforcing safety shoes - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a reinforcing toe for shoes, which can improve strength without using a reinforcing toe made of steel. [Structure] In a reinforcing toe built into a toe part of a safety shoe, the toe is formed of a hard plastic material, and a rib extending in a vertical axis direction is formed in a space surrounded by the toe. The feature is that the columns are erected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a reinforcing toe for use in work safety shoes, and more particularly to a toe for reinforcing a safety shoe that is a plastic toe and has improved strength.

[0002]

[Prior Art]

 The purpose of using reinforcing toecaps in safety shoes is to protect the user's toes from falling objects on the toes. For light work of Japanese Industrial Standard JIS T 8101 (leather safety shoes) In the (L grade) item, the use of metal or plastic as the toecap material is permitted. Among them, as the metal material, generally, a steel material SK7 or a material having a strength equal to or higher than that of steel material SK7 and having a thickness dimension of about 1.1 to 1.3 mm is used.

[0003]

[Problems to be solved by the device]

 At present, one of the important requirements for working safety shoes is the demand for weight reduction of shoes. However, in most conventional safety shoes, a toecap made of steel was built in the toe, which hindered weight reduction (the specific gravity of steel is 7.8 to 7.9, which is very heavy). As a solution to this weight reduction, it is considered to use a plastic toecap with a small specific gravity.However, the plastic toecap has a steel material tip that is resistant to dents and cracks caused by falling objects and has a compression resistance. There was a weakness that it was a fraction of the core. Of course, attempts have been made to adopt a high-performance plastic toecap to improve performance and to improve the strength by mixing various fibers into the material, but to the same level as steel materials. The strength could not be increased.

As a result, the next consideration is to increase the thickness of the plastic material. However, the plastic material has the same strength as the steel material toe core having a thickness of 1.1 to 1.3 mm. However, in reality, the thickness must be about 3 to 5 mm. However, if a plastic toecap with such a thick dimension is used, the surface of the toe part of the shoe containing the toecap may bulge extremely, or the upper may be suspended in the last during actual product processing. There were problems such as difficulty. The present invention is intended to provide a reinforcing toe for safety shoes that can increase the strength of the toe without increasing the thickness dimension, even though the toe is made of plastic.

[0005]

[Means for Solving the Problems]

 For this reason, in the present invention, in the reinforcing toe built into the toe part of the safety shoe, the toe is made of a hard plastic material, and the space surrounded by the toe is arranged in the longitudinal direction. A reinforcing toe core of a safety shoe, which is characterized by standing ribs or struts extending to, is used as a means for solving the problem.

[0006]

[Action]

 With the structure of the present invention, if the strength of the whole toecap is improved and the impact force is within a predetermined range, even if a hard plastic material is used, the whole toecap will be crushed. Disappears.

[0007]

【Example】

 Hereinafter, the present invention will be described with reference to the drawings. 1 and 2 are perspective views of the present invention as seen from the diagonally lower rear side, FIG. 3 is a perspective view of the conventional steel toecap as seen from the diagonally upper rear side, and FIG. 4 is a perspective view as seen from the diagonally lower side. FIG. 5 is a vertical cross-sectional view of the toe portion in a state where the toe core of the conventional example is incorporated in safety shoes. In FIG. 5, the toecap body 1 is incorporated in the toe part of the shoe, and the toecap body is sandwiched between the upper 2 and the backing material 3, and the insole 4 is laid inside the shoe, and the inner surface 4 is laid on the lower surface thereof. An object 5 is stacked on the lower surface of the object 5, and an outsole 6 is stacked on the lower surface thereof. In the figure, reference numeral 7 is a rib, 8 is a pillar, 9 is a space surrounded by a toe box, and 10 is a flange portion of the toe box body.

The present invention is usually formed to have a thickness of about 1.5 to 3 mm, and the toecap becomes excessively thick to inflate the toes of the shoe extremely, or the upper is hung on the last when processing the product. There is no adverse effect such as difficulty in peeling, and the necessary strength is sufficiently secured by the existence of the ribs 7 or the columns 8. In the present invention, the ribs 7 as shown in FIG. 1 or the columns 8 as shown in FIG. 2 are erected in the vertical direction in the space 9 surrounded by the toecap. The ribs and struts should be attached so that their upper ends are integrally abutted against the inside of the upper surface of the toe core body, and their lower ends reach the collar 10 or reach the insole 4 or the outsole 6 of the shoe. It is better to stretch it. Between the toe core body 1 and the fingertips, a considerable gap, which is usually called a throwaway dimension, is secured, and if the ribs 7 and columns 8 are housed near this gap, it will not be an obstacle when worn. .. Even if ribs 7 and columns 8 are erected inward of the throw-away dimension, for example, between the first (thumb) and second (index) fingers of the toe, that is, the part through which the sandals of sandals or geta pass. By locating these in the same way, there is no obstruction as before. The shapes and dimensions of the ribs 7 and the columns 8 can be freely selected.

For this reason, the safety shoes incorporating the toecap of the present invention are subject to ribs and struts when an impact force (a value within a range calculated in advance considering the safety factor) is applied to the upper surface of the toe. Receives the stress on the insole or the outsole of the shoe, and the toecap does not deform in the vertical axis direction. There is no concern that the shape of the toe of the shoe may change without changing the shape. Its performance is that it can sufficiently clear the pressure resistance and impact resistance of the work safety shoes specified in JIS T 8101 of the Japanese Industrial Standards. In addition, it is possible to form ventilation holes at appropriate places in the toecap body so that the strength is not impaired, and in this case, the comfort of the shoe is improved.

[0010]

[Effect of the device]

 Therefore, according to the present invention, since the toecap can be changed from the steel product to the hard plastic product, the weight of the shoe can be reduced, and even if the material is changed, the strength of the toecap can be improved due to the presence of the ribs and the columns. Since it does not cause deterioration, it has an excellent effect that the safety protection for the user of shoes is perfect.

[Brief description of drawings]

FIG. 1 is a perspective view of the present invention as seen from a diagonally lower rear side.

FIG. 2 is a perspective view of the present invention seen from a diagonally lower rear side.

FIG. 3 is a perspective view of a conventional steel toecap seen from an obliquely upper rear side.

FIG. 4 is a perspective view of a conventional steel toecap seen from an obliquely lower rear side.

FIG. 5 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 Body 2 Upper 3 Backing 4 Midsole 5 Midsole 6 Outsole 7 Rib 8 Strut 9 Space part 10 Collar part

Claims (1)

[Scope of utility model registration request] 1. A reinforcing toe core built into a toe portion of a safety shoe, wherein the toe core is made of a hard plastic material, and extends in the longitudinal direction in a space surrounded by the toe core. Reinforcing toebox for safety shoes, which is characterized by standing ribs or columns.