JP2003235604A - Shoe sole and shoe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shoe sole and shoes improved in its moisture permeable water-proof performance. <P>SOLUTION: This shoe sole is composed of a laminate sheet composed of an inner sole having through holes penetrated from an inner face side to a ground face side, a support for a film having air permeability, and a moisture permeable water-proof film laminated on the support for the film, and laminated on an inner face side of the inner sole, an outer sole formed by being impregnated with a peripheral edge of the laminate sheet around the inner sole, and an intermediate sole having through holes penetrated from the inner face side to the ground face side. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole and a shoe using a moisture-permeable waterproof membrane having both waterproofness and breathability.

[0002]

2. Description of the Related Art Conventionally, a moisture-permeable waterproof membrane having both waterproofness and breathability has been used in order to prevent the infiltration of water from the outside and to promote ventilation inside the shoe to suppress stuffiness and bad odor of the foot. Known soles and shoes are known. Also, various types of moisture-permeable waterproof membranes have been proposed. The moisture-permeable waterproof membrane used for the sole of the shoe is generally laminated on a membrane carrier made of woven or non-woven fabric and processed as a laminate sheet. And this laminated sheet is usually adhered to the front bottom and the midsole.

[0003]

By the way, in the conventional shoe sole of this kind, in order to ensure the air permeability, in order to ensure the air permeability, in the sole and the midsole, or in the case of a shoe sole having a midsole, it is further ventilated. Through-holes are formed. The best method to improve the ventilation performance of shoes is to form a large number of these through holes in a wider area, but in the conventional shoe sole, as described above, a laminated sheet including a moisture-permeable waterproof film. However, since it is fixed to the front bottom or midsole by adhesion, a margin of about 10 mm width is required at the peripheral edge of the joint surface with respect to the front bottom of the laminate sheet, and the effective area of the laminate sheet is correspondingly small. It had to be something. Therefore, the range and number of the through holes formed on the front bottom and the like are limited, and it is difficult to further improve the ventilation performance. In addition, the method of fixing the laminate sheet by adhesion is naturally inefficient because it involves the work of applying an adhesive to the peripheral edge of the joint surface of the laminate sheet and attaching it to a predetermined position such as the front bottom. However, productivity was poor, and this was a factor in increasing costs.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a shoe sole and a shoe which can improve the ventilation performance as compared with the conventional one and can be manufactured at low cost. And

[0005]

In order to solve the above problems, the present invention according to claim 1 provides an inner bottom having a through hole penetrating from the inner surface side to the ground contact surface side, and a membrane carrier having air permeability. And a moisture-permeable waterproof membrane laminated on the membrane carrier,
A laminate sheet laminated on the inner surface side of the inner bottom, an outer bottom formed by impregnating the periphery of the laminate sheet around the inner bottom, and a through hole penetrating from the inner surface side to the ground plane side. Provided is a shoe sole having an insole. The present invention according to claim 2 provides the shoe sole according to claim 1, wherein the inner sole has a collar around the periphery, and the outer sole is formed by including the collar. The present invention according to claim 3 provides the shoe sole according to claim 2, wherein the collar has a hole and / or a protrusion penetrating in the thickness direction. The present invention according to claim 4 is characterized in that the membrane carrier has elasticity and is provided between the inner bottom and the inner bottom in a compressed manner in the thickness direction. The shoe sole according to any one of 3 above is provided. The present invention according to claim 5 is characterized in that the outer sole is formed by fixing a rubber ridge to the inner surface side peripheral edge of the outer sole. I will provide a. The present invention according to claim 6 provides a shoe comprising the shoe sole according to any one of claims 1 to 5.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a partial sectional view of a shoe according to an embodiment of the present invention seen from a side surface side, and FIG.
It is a longitudinal cross-sectional view of the shoe according to the embodiment. As shown in these figures, the shoe according to the present embodiment is configured to have an instep 1, an insole 2, an outsole 3, a laminate sheet 4 and a ridge 5, and the instep 1 and the instep It is a cemented-type shoe in which the sole 3 and the sole 3 are not sewn with a thread and are attached with an adhesive. A shoe of the cemented type manufacturing method usually has a midsole (midsole) provided between the insole 2 and the outsole 3, but according to the shoe according to the present embodiment, it is also used as a midsole. By adopting a laminate sheet 4 which will be described later and which can function, no intermediate material is required and the manufacturing cost is reduced.

The insole 2 forms the entire inner bottom surface of the shoe, and a large number of holes penetrate from the inner surface side to the ground contact surface side between the step portion and the toe portion (hereinafter referred to as "stepping portion"). Through hole 2a is formed. The diameter and number of the through holes 2a can be appropriately changed according to the application of the shoe. For example, in the case of sports, the diameter is relatively large or the distribution density of the through holes 2a is high. Ventilation is promoted more by doing.

The outsole 3 has an inner bottom 31 and an outer bottom 32. The inner bottom 31 is formed at least at the stepped portion, and is formed of rubber as a material such that the ground contact surface side is uneven, and the through hole 31a penetrates from the inner surface side to the ground contact surface side. Is provided so as to be located in the recess. By providing the inner sole 31 on the stepped portion of the shoe (shoe sole), the slip resistance can be enhanced. Moreover, since the convex portion formed on the ground contact surface side of the inner bottom 31 directly supports the weight during walking,
By forming the through hole 31a in the recess, the through hole 3a
It is possible to reduce the possibility that foreign matter such as pebbles will be clogged in 1a, and by further increasing the height difference between the convex portion and the concave portion, the possibility of foreign matter clogging can be further reduced.

The inner bottom 31 has a collar 31 around the inner bottom 31.
b is integrally molded. Conventionally, in a shoe (shoe sole) having an outer sole having an outer sole formed around the inner sole, a joint member such as cloth is interposed between the inner sole and the outer sole to join the two. However, in this case, a joining member must be separately prepared, and a work of attaching the joining member to the inner bottom is required, so that the manufacturing cost including the material cost is high. In this regard, according to the present embodiment, since the collar 31b is integrally formed around the main body of the inner bottom 31 at the same time, it is not necessary to separately prepare a joining member, and the joining member is attached to the inner bottom. No additional work is required. Therefore, the manufacturing cost including the material cost can be reduced more than ever before.

The collar 31b has a hole 31c penetrating in the thickness direction thereof, or has a protrusion 31d protruding in a direction substantially orthogonal to the main body of the collar 31b, or like the present embodiment. It is preferable to have both the hole 31c and the protrusion 31d. Since the collar 31b has the holes 31c and the protrusions 31d as described above, when the outer bottom 32 is formed around the inner bottom 31 as described later, the outer bottom 32 encloses the collar 31b and the outer bottom 32b. The material for forming 32 is filled in the hole 31c of the collar 31b and surrounds the protrusion 31d.
The inner bottom 31 and the outer bottom 32 can be firmly joined to each other by preventing the inner bottom 31 and the outer bottom 32 from being separated (see FIG. 2). Also, the brim 31
Since b is formed so as to project from the main body of the inner bottom 31 in a substantially horizontal direction, it is included in the outer bottom 32 to prevent water from entering between the inner bottom 31 and the outer bottom 32. It can be surely prevented.

The outer bottom 32 is formed of, for example, a foamed resin such as polyurethane. Although the material for forming the outer sole 32 is not limited, it may be formed by impregnating the peripheral edge 4a of the laminate sheet 4 as will be described later because of the structure of the shoe sole of the present invention. Therefore, what is available in a liquid state at the beginning of molding is used.

For example, the outer bottom 32 in this embodiment is
As shown in FIG. 3, after the inner bottom 31 is set inside the lower mold 6a and the laminate sheet 4 described later is placed on the inner bottom 31 without adhering, the opening of the lower mold 6a is opened. Is closed with an upper mold 6b having a rubber ridge 5 set therein, and urethane resin as a forming material is injected into the mold 6 and left for a predetermined time to foam in the mold 6. And formed into a predetermined shape. And at this time, the outer bottom 3
2 is formed by including the collar 31b of the inner bottom 31 and impregnating the peripheral edge 4a of the laminate sheet 4 described later. In addition, a rubber ridge 5 is provided on the inner peripheral edge of the outer bottom 32.
Is fixed. The material for forming the outer bottom 32 is preferably injected into the mold 6 without applying pressure. For example, in a molding method of pressurizing and injecting such as injection molding, there are problems that the flange 31b of the inner bottom 31 is deformed, and the inner bottom 31 and the laminate sheet 4 are easily displaced in the mold 6. Therefore, this is to prevent these and increase the yield.

As described above, according to this embodiment, the outer bottom 32
Is formed by impregnating the peripheral edge 4a of the laminate sheet 4, it is possible to reliably prevent water from entering between the outer bottom 32 and the laminate sheet 4. Therefore, since it is not necessary to bond the laminate sheet 4 to the inner bottom 31 in order to prevent water from entering, the bonding margin is unnecessary, and the effective area of the laminate sheet 4 can be made larger than that in the past. As a result, the range and number of the through holes 2a and 31a formed in the inner bottom 2 and the inner bottom 31 can be increased more than in the conventional case, and the ventilation performance can be improved.

Further, in general, when a foamed resin such as polyurethane is used as a material for forming the outer sole 32, the same material is reproduced to represent a fine design shape such as a seam of a thread. It is difficult to make, and the surface is liable to be chipped (voids), so it was not suitable for shoes that emphasize appearance in particular. In this respect, according to the present embodiment, the ridge 5 having a fine design shape is made of rubber which is easy to reproduce the same one and is hard to be chipped on the surface, and the ridge 5 is formed on the outer sole 32. Since it was decided to fix at the same time when molding,
Even when a foamed resin such as polyurethane is used as the material for forming the outer sole 32, a shoe (sole) having excellent design can be provided. In addition, after molding the outer bottom 32,
Compared with the case where the ridge 5 is bonded, the labor and time can be significantly reduced.

The laminate sheet 4 comprises a film-permeable carrier 41 and a moisture-permeable waterproof film 42 laminated on the film-support 41. The laminated sheet 4 in the present embodiment has a two-layer structure in which the membrane carrier 41 is arranged on the inner surface side and the moisture permeable waterproof membrane 42 is arranged on the ground plane side. It is also possible to use a three-layer structure having a film carrier 41 arranged on both sides of the film carrier 41 sandwiched therebetween.
In order to prevent damage to the moisture-permeable waterproof film 42, a mesh sheet made of metal or resin may be provided between the laminate sheet 4 and the inner bottom 31.

As the film carrier 41, it is preferable to use one having air permeability and elasticity to some extent, and a typical example is a woven or non-woven fabric made of natural fibers or synthetic fibers. Sponge rubber It is also possible to use Due to the elasticity of the film carrier 41, it is possible to exhibit an appropriate cushioning property as in the case of a general medium product. In the present embodiment, felt is used as the film carrier 41 as an example of those having such conditions.

The membrane carrier 41 is preferably provided between the inner bottom 2 and the inner bottom 3 in a compressed manner in the thickness direction. That is, the membrane carrier 41 is formed to be slightly thick from the beginning so that the thickness of the laminate sheet 4 itself becomes larger than the height dimension of the gap between the inner bottom 2 and the inner bottom 3 on which the laminate sheet 4 is arranged. Is preferably provided. This not only enhances the cushioning property, but also when the outer mold 32 is molded, when the opening of the lower mold 6a is closed by the upper mold 6b, the film carrier 41 is not separated by the upper mold 6b. As it is compressed and presses the inner bottom 31,
It is possible to prevent the inner bottom 31 and the laminate sheet 4 set inside the lower mold 6a from being displaced. Also,
The inner bottom 31 is brought into close contact with the lower mold 6a, and the laminated sheet 4
Since it also closely adheres to the inner bottom 31, it is possible to prevent the inner bottom 31 and the laminate sheet 4 from rising when the material for forming the outer bottom 32 is injected into the mold. Therefore, it is possible to effectively prevent the forming material of the outer bottom 32 from entering the bottom surface of the inner bottom 31 or between the inner bottom 31 and the laminate sheet 4.

The moisture-permeable and waterproof membrane 42 is not particularly limited as long as it is water-impermeable and breathable. For example, the product name "SOLE04" manufactured by Japan Gore-Tex Co., Ltd.
Conventionally known ones such as the above can be used. The moisture-permeable waterproof membrane 42 is attached and laminated on the membrane carrier 41 within a range that does not impair the moisture-permeable waterproof performance.

[0019]

As described above, according to the shoe sole and the shoe of the present invention, the inner sole having the through hole penetrating from the inner surface side to the ground contact surface side, the breathable membrane carrier, and the membrane. And a laminated sheet which is formed on the inner surface of the inner bottom, and an outer bottom which is formed around the inner bottom by impregnating the periphery of the laminated sheet. , And an insole having a through hole penetrating from the inner surface side to the ground surface side. Therefore, it is possible to reliably prevent the infiltration of water into the inside of the shoe, and since the laminated sheet can be fixedly arranged without adhering, it is possible to increase the effective area of the laminated sheet. It is possible to increase the range and number of the through holes formed in the inner bottom and the inner bottom as compared with the conventional one, and improve the ventilation performance.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a shoe according to an embodiment of the present invention seen from a side surface side.

FIG. 2 is a vertical cross-sectional view of the shoe according to the same embodiment.

FIG. 3 is a view for explaining the outer bottom molding method adopted in the same embodiment.

[Explanation of symbols]

1 Armor 2 insole 3 Outsole 31 inner bottom 32 Outsole 4 Laminated sheet 41 Membrane carrier 42 moisture-permeable waterproof membrane 5 rim

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Norio Takamiya, inventor             4-38-16 Umeda, Adachi-ku, Tokyo Adachi-go             Mu Co., Ltd. F-term (reference) 4F050 BA05 BA43 BA49 BA50 BA56                       HA26 HA28 HA53 HA82 HA89

Claims (6)

[Claims] 1. An inner bottom having a through hole penetrating from the inner surface side to the grounding surface side, an air permeable membrane carrier, and a moisture-permeable waterproof membrane laminated on the membrane carrier. A laminated sheet laminated on the inner surface side, an outer bottom formed by impregnating the periphery of the laminated sheet around the inner bottom, and an inner bottom having a through hole penetrating from the inner surface side to the ground surface side. A shoe sole comprising: 2. The shoe sole according to claim 1, wherein the inner sole has a collar around the periphery, and the outer sole is formed by including the collar. 3. The shoe sole according to claim 2, wherein the collar has a hole and / or a protrusion penetrating in the thickness direction. 4. The membrane carrier has elasticity and
The shoe sole according to any one of claims 1 to 3, wherein the shoe sole is provided between the inner sole and the insole by being compressed in the thickness direction. 5. The shoe sole according to claim 1, wherein the outer sole is formed by fixing a rubber ridge to the inner peripheral edge of the outer sole. 6. A shoe comprising the shoe sole according to any one of claims 1 to 5.