JP2001008705A - Footgear, its production and insole used for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a process for producing a footgear with upwardly curved shank parts having a more comfortable fitting property and an insole used for the same. SOLUTION: The footgear has an upper 1 and the insole 1B. A grounding sole 2 is joined to the rear surface of the insole 1B. A shank piece 3 upwardly curvilinearly molded to a shape capable of closing a hollowed-out part K is mounted at the insole 1B disposed in the hollowed-out part K in the prescribed position of the shank to a shape corresponding to the shape of the shank. The grounding sole 2 is integrated to the rear surface of such insole 1B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to footwear such as underwear, work shoes or boots, a method of manufacturing the same, and an insole used for the same.

[0002]

2. Description of the Related Art Various types of footwear having a grounded bottom, such as underground shoes or work shoes, are required to have a particularly light workability, so that a relatively flexible and thin bottom is attached. In order to satisfy this lightness, a part of the basement is bent upward in order to enhance the fit of the foot in a part of the basement. As a result, it is possible to make the footrest close to the arch of the foot so that the foot feels good on the ground and fits the foot.

In the above case, it is necessary to vulcanize and shape the rubber sole in order to bend the step portion of the rubber sole upward. In this manner, the rubber sole after vulcanization is attached to the middle sole. In this case, since the adhesion is difficult, the peripheral portion is further sewn and attached. However, as described above, when attaching the peripheral portion of the rubber bottom by sewing, not only is it necessary to take more time than when only bonding is performed, but if sewing is not performed securely, a gap is generated around the rubber bottom, There was a case where water might enter through the seam.

On the other hand, if the unvulcanized rubber bottom is bonded to the midsole and then vulcanized, it can be firmly fixed and there is no seam, so there is no danger of water infiltration. When vulcanization is performed by simple vulcanization molding, the stepping part cannot be bent upward, and even if vulcanization molding is performed while pressing the stepping part with an appropriate mold, a grudge that causes deformation was there.

[0005] In order to solve this problem, the applicant of the present invention has defined a stepped portion which has been previously curved upward and an uncured peripheral portion formed so as to surround the stepped portion, by combining the former outer edge with the latter. A rubber base is constructed by bonding the inner edge of the base to a rubber base, and vulcanized and molded to be attached to a midsole or the like. (See JP-A-8-70901)

[0006]

According to the above-mentioned proposal, while the step portion is curved upwardly, the peripheral portion can be integrally attached by vulcanization molding from an unvulcanized state. However, there is a feature that water can be prevented from entering, but there is a problem that the joint at the rubber bottom is inevitably exposed. For this reason, according to the present invention, while maintaining the curved shape above the step portion, the step portion is provided at a predetermined position, and the grounding bottom that does not expose the joint portion is integrally joined to provide an excellent appearance. To provide footwear.

[0007] The above-mentioned problem is not limited to the underground level, but can be similarly applied to other footwear such as work shoes and boots. By providing the step portion that is curved upward, the feeling of fitting and the feeling of grounding when worn are excellent, and the superiority as footwear is exhibited.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and its gist is to provide an upper and an insole, and to join a grounding bottom to the lower surface of the insole. In the footwear, a step piece which is curved upward in a shape capable of closing the cut-out portion is attached to an inner sole provided with a cut-out portion at a predetermined position of the step portion in a shape corresponding to the step portion. A footwear characterized in that a ground sole is integrated with the lower surface of the midsole.

The present invention also relates to a method for manufacturing footwear comprising an upper and an insole, wherein a ground sole is joined to a lower surface of the insole, wherein the footrest of the insole is formed in advance with a shape corresponding thereto. A hollow portion is provided at a predetermined position of the tread portion, and a tread piece that is upwardly curved and formed in a shape capable of closing the hollow portion is attached to the hollow portion, and an upper is hung on the midsole. A method for manufacturing footwear, characterized in that a grounding sole is joined to a lower surface to be integrated.

[0010] The present invention further comprises an upper and an insole,
In the insole used for footwear in which the ground sole is joined to the lower surface of the insole, a hollow portion is provided at a predetermined position of the foot portion in a shape corresponding to the foot portion, and a shape capable of closing the hollow portion. An insole used for footwear characterized by attaching a stepping piece curved upward is also included in the gist.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 5 show examples in which the present invention is applied to each underground. In these figures,
Reference numeral 1 denotes an underground upper, which is formed by suspending an upper 1A, usually made of woven fabric, on an insole 1B.
Reference numeral 2 denotes a grounding bottom, which is formed of rubber or synthetic resin, and is attached to the bottom of the upper 1, that is, the lower surface of the midsole 1B. Reference numeral 1C denotes a reinforcing cloth for the toe and the heel.

[0012] The present invention relates to such an underground,
First, as shown in FIG. 3, a midsole 1 </ b> B provided with a hollow portion K at a predetermined position of the tread portion in a shape corresponding to the tread portion is prepared, and as shown in FIG. 4, the hollow portion K is closed. A stepping piece 3 is prepared which has a shape that can be formed and is curved upward in advance so as to follow the curved state of the stepping portion. In this example, the stepping piece 3 has the same shape as the hollow portion K, but this is preferable because there is no step on the periphery.

The step piece 3 is generally formed using rubber or synthetic resin or a material mainly composed of rubber or synthetic resin. In this example, as shown in FIG.
Are used, and this is curved-formed by an appropriate forming method. When the cloth 3B is joined to the upper surface of the main material 3A as in this example, the strength of the foot piece 3 can be improved, and the cloth 3B is located inside the footwear. It can be used without it. In this case, it is advantageous to use an easily stretchable material or a cloth made of a woven or knitted fabric having a texture as the cloth 3B, since the shape can be easily formed at the time of curve forming and the shape can be easily formed into a predetermined shape. In particular, when rubber is used as the main material 3A, since the molding shrinkage of the rubber is larger than that of the cloth, the curved shape of the step portion 3 is preferably maintained.

Next, the stepping piece 3 is housed in the hollowed portion K of the insole 1B, and the peripheral edge 3C thereof is formed as shown in FIG.
The zigzag stitch is attached so as to straddle both edges with the peripheries of the cutout portion K abutting each other. When the step 3 is attached to the insole 1B in this manner, the step 3
Can be accurately positioned with respect to the insole 1B, and since the hollow portion K is provided, the curved shape of the step portion can be utilized as it is.

In the above example, the stepping piece 3 is mounted in the same shape as the hollow portion K. However, the upwardly curved foot portion 3 is formed in a shape similar to the hollow portion K and slightly larger. It is also possible to attach this to the core. FIG. 8 shows this example. In this case, the peripheral edge 3C of the step portion 3 can be sewn, adhered, or both can be attached while partially overlapping the peripheral edge of the hollow portion K.

The insole 1B and the upper 1 obtained as described above are formed into a mold according to a standard method (not shown, but a stepped bottom portion of the mold is provided with a curved recess).
, And the lower peripheral edge of the upper 1 is suspended and adhered to the peripheral edge of the midsole 1B to be integrated. This operation can be performed in the same manner as the conventional operation of hanging the upper on the insole, since the stepping piece 3 is already attached to the insole 1B. When the above state is reached, the lower surface of the insole 1B (although this surface is often turned up at the time of work) is placed in an unvulcanized state of a predetermined shape, that is, an unvulcanized or semi-vulcanized state. Grounding bottom 2 made of rubber
Are bonded by using an adhesive, and then vulcanized and integrated to form an underground container of the present invention as shown in FIG. In addition, on the lower surface of the grounding bottom 2,
The tread pattern is formed by appropriate unevenness.

FIG. 2 shows an underground wall obtained by the present invention.
As shown in FIG. 5, the grounding bottom 2 is a single piece, and is formed by vulcanizing unvulcanized rubber and integrally attached to the inner bottom 1B or the lower end peripheral edge of the upper 1, so that the joining portion is It is not exposed to the outside at all, and it can be firmly joined to the grounding bottom 2 and the midsole 1B and the stepping piece 3 by vulcanization molding, so that there is no danger of water infiltration. Since it is possible to accurately bend upwards, it is possible to provide a product that fits the foot and has good lightness. When the grounding sole 2 of the present invention is joined to the lower surface of the midsole 1B, it is also effective to use a special adhesive between the two in order to ensure adhesion to the stepping piece 3.

FIGS. 6 and 7 show an embodiment in which the present invention is applied to boots. In the figure, 1 is the upper, 2
Is a grounding sole, but in the case of boots, the upper 1 is composed of a rubber cloth 1D integrally formed from the trunk to the upper, and an inner cloth 1E made of a knit or the like provided on the inner surface thereof. . In the case of manufacturing the boots of the present invention, the inner cloth 1 is used in a type in which the top and bottom in FIG. 6 are inverted (not shown, but a stepped bottom portion of this type is provided with a curved recess).
Put E on.

In the present invention, the insole 1B is adhered to the bottom surface in the above state, and the insole 1B is prepared in the same manner as in FIG. 3 (however, there is no toe portion crotch).
That is, an insole 1B provided with a hollow portion having a shape corresponding to a step portion.
Then, a step piece 3 which is previously bent in a shape capable of closing the hollow portion, that is, the same shape as the hollow portion K, is applied thereto, and a peripheral edge thereof is sewn or adhered to produce an integrated product. In this case as well, similarly to the case of FIG. 8 of the above embodiment, it is also possible to attach using a stepping piece 3 having a shape similar to the hollow portion K and having a slightly larger shape.

The bottom surface of the mold covered with the inner cloth 1E has a flat shape due to the tension of the upper surface of the stepping portion and the inner cloth 1E. , And then the rubber cloth 1D is adhered to the trunk and the shell to cover the body and the upper. When the hanging is performed in this manner, since the inner cloth 1E is made of a stretchable material such as a knit, the inner cloth 1E is pushed in by the curvature of the piece 3 and follows the depression of the mold.

From above, an intermediate core 1F made of unvulcanized rubber is adhered to eliminate a step due to suspension,
Further, when the grounding bottom 2 made of the same rubber is bonded via an adhesive and vulcanized and formed by a predetermined method, the grounding bottom 2 as shown in FIG. 7 is integrally bonded and the stepping portion curves upward. As a result, an excellent boot can be obtained in which the ground sole 2, the midsole 1B and the stepping piece 3 are firmly integrated, and the joint is not exposed to the outside.

FIG. 9 shows still another embodiment, which is a modification applied to the boots shown in FIGS. In the example of FIG. 7 described above, unvulcanized rubber is used as the grounding floor 2 and is vulcanized and integrated so as to follow the curvature of the stepping piece 3. The underground 2 is made of an unvulcanized rubber, a vulcanized rubber or a synthetic resin, made of a suitable material such as felt,
Further, a cushioning material 4 having a cushioning property such as a foamed synthetic resin is interposed in a gap between this and the insole 1B.

Also in this case, the step portion acts along the arch of the foot due to the curvature of the step piece 3, and when the gravity is applied thereto, the step piece 3 is slightly pressed downward. However, the degree of curvature of the step piece 3 can be changed by the interposition of the cushioning material 4, so that it can be absorbed and fitted to the arch and a good feeling of ground contact can be exhibited. Also in the case of this example, the grounding bottom 2 may be bonded after the core 1F is bonded to the lower surface of the bottom 1B if necessary. In this embodiment, the description is made based on an example in which the present invention is applied to boots. However, it is needless to say that this embodiment can be applied to other footwear such as work shoes.

Although the embodiment in which the present invention is applied to the basement boots and boots has been described above, the present invention is not limited to this example, and the basement without a crotch, work shoes, athletic shoes, indoor shoes, etc. It can be applied to various types of footwear.
When applied to these footwear, they are configured in the same manner as described above, but for example, the structure of the obtained footwear is
The cross section is almost the same as the cross section of FIG. 2, and the step is formed on the insole 1B configured as shown in FIG. The piece 3 is attached, the core 1F is adhered to the insole 1B if necessary, and then the grounding bottom 2 is joined to be integrated. The core 1F used as necessary in the present invention can be appropriately used such as unvulcanized rubber or vulcanized molded rubber.

Further, in the present invention, the insole itself used for the above-described footwear has a feature. The insole 1B shown in FIG. 3 and FIG. By applying this to the footwear in combination with an appropriate upper and attaching the ground sole, the footwear that fits the foot sufficiently and has an excellent ground feeling by the same manufacturing process as the conventional one Can be provided. Of course, also in this case, the core 1F can be used together if necessary.

The grounding bottom in the present invention can be integrally formed by vulcanization using an unvulcanized state, that is, an unvulcanized or semi-vulcanized rubber, or a vulcanized bottom is used. You can also. In addition, other than rubber, various synthetic resins, felts, leathers, and other materials may be used, and these materials may be used while being molded or integrally attached.

[0027]

The present invention has a construction as described in detail above, and uses an insole to which a unique tread is attached,
Since it is integrated with the grounding bottom, it has a stepped part with a predetermined shape that is curved upward and is accurately provided at a predetermined position, thereby preventing water from entering, and furthermore, to the outside. Excellent footwear without exposed joints can be provided, and by using an insole with pre-installed treads, such footwear can be efficiently and reliably secured without using special methods and equipment. In addition, there is an advantage that the above-mentioned effect can be exerted even in general footwear by using the insole to which the unique tread piece is attached.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment in which the present invention is applied to each underground.

FIG. 2 is a partial longitudinal sectional view of FIG.

FIG. 3 is a perspective view showing a state before a stepping piece is attached to an insole used in the present invention.

FIG. 4 is an enlarged sectional view of a step piece used in the present invention.

FIG. 5 is a partial plan view showing an example of an insole to which a step piece is attached.

FIG. 6 is a perspective view showing an embodiment in which the present invention is applied to boots.

FIG. 7 is a partially enlarged longitudinal sectional view of FIG. 6;

FIG. 8 is a sectional view showing another example of the insole used in the present invention.

FIG. 9 shows another embodiment in which the present invention is applied to boots.
FIG. 3 is an enlarged sectional view corresponding to FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper 1B Middle bottom 2 Grounding bottom 3 Stepping piece 4 Buffer material K

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A43B 13/14 A43B 10/00 101Z 302

Claims (12)

[Claims] 1. A footwear comprising an upper and an insole, wherein a ground sole is joined to a lower surface of the insole, wherein a hollow portion is provided at a predetermined position of the tread portion in a shape corresponding to the tread portion. Footwear, characterized by attaching a stepping piece which is upwardly curved in a shape capable of closing the hollow portion, and which is integrated with a ground sole on the lower surface of the inner sole. 2. The footwear according to claim 1, wherein the grounding sole is formed so as to follow the curvature of the footstep and integrated. 3. The structure as claimed in claim 1, wherein a cushioning material is interposed between the grounding bottom and the lower part of the step of the midsole to interpose the cushioning material.
Footwear as described. 4. The footwear according to claim 1, wherein an unvulcanized rubber is used as the ground sole, and the rubber is vulcanized so as to be integrated with the midsole. 5. The footwear according to claim 1, wherein a step piece having a cloth bonded to an upper surface is used. 6. A method of manufacturing footwear comprising an upper and an insole, wherein a ground sole is joined to a lower surface of the insole, wherein the tread portion of the insole has a shape corresponding thereto in advance. A hollow portion is provided at a predetermined position, a stepping piece which is upwardly curved in a shape capable of closing the hollow portion is attached to the hollow portion, and an upper is suspended from the middle bottom, and further contacted with the lower surface. A method for manufacturing footwear, wherein the underground is joined and integrated. 7. The footwear manufacturing method according to claim 6, wherein a grounding sole made of a moldable material is formed and integrated so as to follow the curvature of the step piece. 8. The structure according to claim 6, wherein a cushioning material is interposed between the grounding bottom and the lower part of the step of the midsole so as to be integrated.
A method for producing the footwear according to the above. 9. A footwear manufacturing method according to claim 6, wherein an unvulcanized rubber is used as the ground sole and vulcanized so as to be integrated with the midsole. 10. The method of manufacturing footwear according to claim 6, wherein a step piece having a cloth bonded to an upper surface is used. 11. An insole for use in footwear having an upper and an insole, and a ground sole joined to a lower surface of the insole, wherein a hollow portion is provided at a predetermined position of the tread portion in a shape corresponding to the tread portion. An insole for use in footwear, characterized in that a stepping piece having a shape capable of closing the hollow portion and curved upward is attached. 12. An insole for use in footwear according to claim 11, wherein a step piece having a cloth bonded to its upper surface is used.