JP3087213B2 - Underground - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an underground wall which can be used for civil engineering, construction sites, agricultural work, and various other uses.

[0002]

2. Description of the Related Art Conventionally, an underground base is manufactured by bonding an upper obtained by sewing a fabric and a grounding bottom made of rubber or synthetic resin by a sticking or sewing method. Such an underground structure is widely used because it has a light feeling due to its configuration and has an excellent feeling of contact with the ground, but there is still a problem in protecting the foot when an object is dropped on a toe or the like.

[0003] For this reason, a protective body made of a steel plate or the like is interposed in the toe of the underground or is covered with the outer part of the upper, or it is covered by Japanese Utility Model Publication No. 36-11438 or Japanese Utility Model Publication No. 3-32241. It is already known from the gazette.

[0004] However, the former of these is the former No. 36-1
In the case of a basement disclosed in Japanese Patent Publication No. 1438, since a protective body is interposed in the upper part, it takes time and effort to manufacture, and there is a grudge that cannot be provided at low cost.

[0005] In the latter case of Japanese Utility Model Publication No. 3-32241, the protective body is separated by the thumb and the four fingers, so that lightness is not impaired and the protection is easy. There is a fear that the user may feel uneasy about coming off during use.

[0006] Since a light and stable feeling is required in each basement, even when a toe protector is installed, it must be securely fixed to the upper, and at the same time, the manufacture is simple and efficient. Can be well manufactured and required.

[0007]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention does not impair the original feeling of lightness, and furthermore, the toe protector is firmly adhered to the upper toe to ensure the protection of the toes. The purpose of the present invention is to provide a method for efficiently producing each underground work.

[0008]

SUMMARY OF THE INVENTION That is, the gist of the present invention is to provide a method for manufacturing a basement in which a protective body is attached to an upper toe, so that the upper and lower fingers are integrally covered. The toe protector formed on the upper part is covered with the upper toe and an adhesive is interposed between the toe protector, and the action of fluid pressure is applied to at least the toe inside the upper.
Can be inflated with less upper
Both underground, characterized by using a sac that can be shaped to correspond to the toe , applying pressure from the inside and holding the toe protector from outside to adhere to the upper in this state Manufacturing method.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 shows an example of a basement manufactured according to an embodiment of the present invention, and FIG. 2 is a partial cross-sectional view illustrating a manufacturing method according to an embodiment of the present invention.

In these figures, reference numeral 1 denotes an upper, and the upper 1 is sewn with a front cloth and a back cloth, and an insole 2 is attached to the upper cloth. The 3 is a ground base made of rubber or synthetic resin, has produced a time underground secured by add-on type or sewn-type bonded to the upper 1.

According to the present invention, in such a method of manufacturing underground, the toe protector 4 formed so as to integrally cover the thumb and the four fingers on the toe is firmly attached to the toe of the upper 1. It is used to manufacture a basement that is bonded to a basement.

That is, in the embodiment shown in FIG. 2, the toe protector 4 is covered with the toe of the upper 1 and an adhesive is interposed between the toes to form a shape corresponding to at least the toe inside the upper 1. A sac 5 which can be formed is loaded inside, and is inflated by the pressure of a fluid such as air to keep the shape. In this state, the toe protector 4 is pressed from the outside to adhere to the upper 1.

By using such a sac 5, it is possible to easily inflate and retain the shape by the action of fluid pressure by injecting air or the like, and to release the fluid pressure more easily than the upper 1. Can be removed. Also, when the shape is retained by the capsule 5, the toe can be uniformly expanded and the degree of expansion can be adjusted, so that it can be applied even when there is a delicate difference in the inner volume inside the toe. Since moderate flexibility can be maintained, the shape can be reliably retained from the inside of the toe protector 4.

The bladder 5 used in the present invention is made of rubber or plastic having excellent air-tightness or water-tightness. However, if it is flexible and can be formed into a shape corresponding to the toe by fluid pressure. Although it is not necessary to pre-mold, it is more convenient to pre-mold in consideration of the internal shape of the toe.

FIGS. 3 to 5 show the toe protector 4 used in the present invention viewed from the bottom side. The main body 4A is shaped so as to cover the thumb and the four fingers. An engagement portion 4B is provided. The engaging portion 4B is provided at the rear of the bottom surface as shown in the figure, but may be provided at the central portion or at both. In addition, such an engaging part 4B
Is provided, a concave portion 3A can be provided at a position corresponding to the grounding bottom 3 so as to accommodate the engaging portion 4B. (FIG. 6
When the engaging portion 4B is engaged with the concave portion in this way, the toe protector 4 does not come off during use, and can be attached more firmly.

[0016] In toe guards 4 in FIG. 3, it is provided with the projecting pieces like engagement portion 4B, which those of one or two rod-shaped such pass multiplying both sides as shown in FIG. 4 or FIG. 5 You can also
This can prevent deformation such that the bottom surface opens due to pressure from above the toe protection member 4, which is more convenient. Of course, such an engaging portion 4B can be omitted when the strength of the toe protector itself is sufficient.

The toe protector 4 used in the present invention is made of a steel plate, reinforced plastic, or leather such as cowhide impregnated with a synthetic resin, and is formed into a shape covering the thumb and the four fingers. When the engaging portion 4B is provided, a piece or a bar is welded,
It can be fixed or integrally formed by riveting.

Although illustration is omitted, a buffer sheet is interposed between the outer cloth of the front cloth, the inside of the back cloth, or between the front cloth and the back cloth at a portion corresponding to the toe portion to which the toe protector of the upper 1 is covered. Can be. Such a cushioning sheet is not only useful for protecting the toe, but also can provide a certain tension when covering the toe protector, which is convenient. As the buffer sheet, a thick cloth, a nonwoven fabric, or the like is used.

[0019]

According to the present invention having the above-described structure, the toe protector can be firmly and securely bonded to the upper, and as a result, an underground base with the toe protected can be manufactured efficiently. There are advantages that can be.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a basement obtained by the present invention.

FIG. 2 is a partial cross-sectional view for explaining a manufacturing method according to one embodiment of the present invention.

FIG. 3 is a perspective view showing the embodiment of the toe protector used in the present invention as viewed from the bottom surface side.

FIG. 4 is a perspective view showing the embodiment of the toe protector used in the present invention as viewed from the bottom side.

FIG. 5 is a perspective view showing the embodiment of the toe protector used in the present invention as viewed from the bottom side.

FIG. 6 is a sectional view taken along the line AA 'of FIG. 1;

[Explanation of symbols]

 1 ··· Upper 2 ··· Middle bottom 3 ··· Ground contact 4 ··· Toe protector 5 ··· Capsule

Claims (4)

(57) [Claims] 1. A method for manufacturing a basement in which a protective body is attached to an upper toe portion, wherein a toe protector shaped so as to integrally cover the thumb portion and the four finger portions of the upper is attached to the upper toe portion. At the same time, the pressure is applied to at least the toe inside the upper part by putting the adhesive between
Can be inflated with less upper
Both underground, characterized by using a sac that can be shaped to correspond to the toe , applying pressure from the inside and holding the toe protector from outside to adhere to the upper in this state Manufacturing method. 2. A method for producing a time underground according to claim 1, which comprises using the toe guards provided with engaging portions on the bottom. 3. The method according to claim 2, wherein a grounding bottom having a concave portion provided at a corresponding portion of the engaging portion of the toe protector is used. 4. A cushioning sheet is interposed in a corresponding upper portion covered with a toe protector .
The method according to claim 2 or claim 3 .