JP2598955B2 - Joint structure of toe lining - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a joining structure of a toray nig in shoes made by a goodyear welt type shoemaking method.

<Conventional example and problems> Generally, when the upper with the thin leather toe lining laminated inside the upper is squeezed into the midsole and fixed, the inner surface of the lining that is in contact with the side of the rib at the midsole has an adhesive Is fixed by bonding or the like.

In this case, the leather surface on the inner surface of the lining is a smooth silver surface, and the silver surface layer at the joint may peel off together with the adhesive and peel off at the joint with the midsole. It has been practiced to buff the silver surface of the surface to enhance the bonding effect.

<Problems to be Solved by the Invention> However, according to the above-described joint structure, the buffing of the silver surface makes the originally thinner lining leather thinner, so that the strength of the lining itself is weakened. Therefore, it breaks without being able to withstand the tensile stress during fishing,
It often breaks along the edge of the joint due to bending and stretching force during use. In addition, when the lining leather becomes thin, the leather becomes easy to stretch when subjected to fishing stress, so that the fishing position is displaced and the buff part does not correctly face the inner bottom rib side surface, There are also disadvantages such as a failure to obtain a predetermined bonding strength.

<Means for Solving the Problems> Therefore, the joining structure according to the present invention is designed to eliminate the above-mentioned drawbacks by arranging a plurality of diameters as appropriate for the tow lining that is to be joined to the side surface of the insole rib. Of the toe lining formed by forming the perforations.

<Operation> According to the joint structure of the tow lining according to the present invention, even when the tow lining is strongly pulled during upper fishing, it does not abnormally expand, so the position of the perforation provided in the fishing allowance is reduced. Without being displaced and displaced, it is positioned at a predetermined position and faces the rib side surface of the inner bottom. When adhesive is applied between the fishing allowance and the rib side surface at this position and pressed against it, the adhesive solidifies while flowing into the perforation,
The upper and the midsole are strongly joined.

<Examples> Next, the present invention will be described in more detail according to one example shown in the drawings.

FIG. 1 shows a cross-sectional view of a shoe manufactured by the Goodyear Welt type shoemaking method. Reference numeral 1 denotes an upper, which is composed of an upper 2 and two layers of a lining, that is, a lining stretched inside the upper. Reference numeral 5 denotes an insole rib protruding and fixed in a substantially T-shape along the bottom edge of the insole 4, and is formed of a tough material such as canvas or plastic. Reference numeral 6 denotes a midsole filled between the midsole 4 and the outsole 7, and 8 denotes a midsole rib 5 sandwiching the lower edge of the upper 1.
Scooping thread that stitches the rising part 5a of the
Reference numeral 9 denotes a sewing thread obtained by sewing the fine leather 71 and the outsole 7.

FIG. 2 and FIG.
The upper 1 is shown in a fixed state. here,
As in the prior art, the toe lining 3 is bonded to the side of the rising portion 5a of the midsole rib with an adhesive by using the adhesive allowance 3a. There are provided a plurality of perforations 10 formed by the above method. Therefore, the adhesive layer applied to the joint surface is solidified with a part of the adhesive layer being cut into the perforation 10, so that the toe lining 3 and the rising portion 5a of the midsole rib are firmly joined. Next, after trimming and removing the extra fishing allowance of the upper 1 along the lower edge of the rising portion 5a, the bottoming is completed by sewing as shown in FIG.

FIG. 4 shows a thin leather for tow lining used in the present invention. The perforations 10 are formed in the thin toe portion of the thin leather, that is, the toe portion 3B, with holes having a diameter of approximately 2 mm at intervals of approximately 5 mm within the width of the fishing allowance 3a. However, the interval P and the diameter D are appropriately changed according to the type of the shoe and the like.

<Effect> According to the joint structure of the toe lining according to the present invention, even when the tow lining is strongly pulled during upper fishing, it does not abnormally expand, so the position of the perforation provided in the fishing allowance is reduced. Without being displaced and displaced, it is positioned at a predetermined position and faces the rib side surface of the inner bottom. When adhesive is applied between the fishing allowance and the rib side surface at this position and pressed against it, the adhesive solidifies while flowing into the perforation,
The upper and the midsole are strongly joined.

Accordingly, there is no displacement of the tow lining fishing position and the joining with the insole is completed, so that inconvenience such as peeling of the bonded portion does not occur.

Further, since the tensile strength at the time of fishing is not weakened, and the perforation can be easily formed by a usual punching process, there is no problem in the work process, and the present invention is rich in various usefulness.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an embodiment of the present invention. FIG. 1 is a cross-sectional view of a shoe manufactured by the Goodyear Welt type shoemaking method, FIG. 2 is a perspective view showing a joint portion of an upper after fishing, FIG.
The figure is a partially cutaway sectional view showing the cross section taken along the line III-III in FIG. 2 with the insole facing downward, and FIG. 4 is a developed view of the tow lining. 3 ... toe lining 3a ... ... fishing allowance 4 ... ... midsole 5 ... ... midsole rib 5a ... ... rising part 10 ... ... perforation

Claims (1)

(57) [Claims] 1. A toe lining joining structure in which a plurality of perforations having an appropriate diameter are formed in place of a toe lining allowance for forming a joining surface with a side surface of an inner bottom rib.