JP2018086228A - Sole, and shoe using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it difficult for a foreign matter to remain on a ventilation part, and further to enter inside, when treading on the foreign matter existing on the ground.SOLUTION: A sole includes a lower bottom layer 2 having openings 2a-2e formed thereon, a middle bottom layer 3 arranged on the upper side of the lower bottom layer 2, and formed of a reed screen material 3b arranged so that several materials pass through each opening 2a-2e, extendedly in a longitudinal direction and having a clearance 3a in a cross direction, a ventilating moisture-permeable waterproof layer 4 arranged on the upper side of the middle bottom layer 3, and an upper bottom layer 5a arranged on the upper side of the ventilating moisture-permeable waterproof layer 4, and provided with a through hole 5a corresponding to the opening of the lower bottom layer 2. A length in a cross direction of the clearance 3a is shorter than a length in a cross direction of the reed screen material 3b.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a shoe sole having breathability and moisture permeability and a shoe using the same.

  Conventionally, in shoes such as men's shoes, moisture inside the shoes is difficult to be discharged to the outside, and the inside of the shoes may be stuffy.

  Therefore, it is intended for shoes other than completely waterproof shoes (special shoes for the purpose of complete waterproofing), and has breathability to prevent stuffy feet, so it can be worn comfortably and everyday There has been proposed a waterproof interior member for shoes that secures waterproofness to the extent that there is no problem in wearing the shoes (that is, provided with sufficient waterproofness as everyday waterproof shoes) (see, for example, Patent Document 1).

This member is made from a polyester fiber having a fiber diameter of 10 μm or less, has a basis weight of 50 to 250 g / m ² , and has an embossed and water-repellent melt blown nonwoven fabric as a main base material, or its melt blown method JIS L of melt-blown non-woven fabric with embossed and water-repellent finish as described above, with the main base material made of tricot reinforced at least one side of the non-woven fabric
The air permeability according to 1096 is in the range of 1 to 25 cc / cm ² / sec, and the water pressure resistance according to JIS L 1092A is in the range of 50 to 2000 mmH ₂ O.

  In addition, a vent hole is made in the sole (outsole), and a breathable breathable waterproof membrane is placed between the sole and the inner bottom of the sole so that moisture inside the shoe is also discharged from the sole. A shoe sole structure has been proposed (see, for example, Patent Document 2).

JP 2003-31803 A Japanese Patent Laying-Open No. 2015-228991

  In the structure described in Patent Document 1, a through hole is provided, and the through hole extends to the laminated portion of the breathable moisture permeable waterproof membrane and the insole. There is a possibility that the through-hole, which is a ventilation portion, enters and closes the through-hole, and in some cases, a foreign object breaks the ventilation / breathable waterproof membrane and reaches the insole.

  An object of the present invention is to provide a shoe sole and a shoe using the same, in which, when a foreign object existing on the ground is stepped on, the foreign object is unlikely to remain in the ventilation portion and hardly enter the inside.

  According to the first aspect of the present invention, a lower bottom layer in which a wide opening is formed and an upper side of the lower bottom layer are disposed so as to extend in the left-right direction and leave a plurality of gaps in the front-rear direction so as to pass through the plurality of openings. An insole layer formed by a soldering material disposed on the inner bottom layer, a breathable moisture permeable waterproof layer disposed on the upper side of the insole layer, and an opening of the lower bottom layer disposed on the upper side of the breathable moisture permeable waterproof layer. And an upper bottom layer in which a through hole is provided, and the length of the gap in the front-rear direction is smaller than the length in the front-rear direction of the soldering material. Here, the left-right direction means the width direction of the shoe sole, and the front-rear direction means the longitudinal direction of the shoe sole.

  In this way, even if a foreign object enters the opening by stepping on a foreign object that exists on the ground, the opening is wide and large enough to pass through a plurality of soldering materials when viewed from below, so that the foreign object is opened. It will never remain inside. Also, in the insole layer, the length in the front-rear direction of the gap formed between the soldering materials is smaller than the length of the soldering material in the front-rear direction, so the upper side of the opening is almost covered with the soldering material, so that foreign matter can be prevented from entering. It is blocked by the material, and foreign matter does not reach the ventilation / breathable waterproof layer.

  In this case, as described in claim 2, it is desirable that the width of the opening is about 15 to 25% of the shoe sole width of the portion where the opening is provided.

  And, as described in claim 3, in the lower bottom layer, an outer portion and an inner portion of a portion corresponding to the stepping portion from the stepped portion of the foot are divided into a plurality of regions in the front-rear direction, and each of the regions Preferably, the opening is formed except for a region corresponding to an inner portion of the step portion.

  In this way, a large opening can be dispersed and secured in a necessary portion, and efficient ventilation is realized.

  In that case, as described in claim 4, in the lower bottom layer, the outer portion and the inner portion of the portion corresponding to the stepped portion from the stepped portion of the foot are divided into three regions in the front-rear direction, In the region, except for a region corresponding to an inner portion of the step part, the opening is formed closer to the center, or the lower bottom layer is a step part of the foot as claimed in claim 5. The outer portion and the inner portion of the portion corresponding to the stepping portion are divided into three regions in the front-rear direction, and in each of the regions, the opening is formed closer to the center except for the region corresponding to the stepping portion. On the other hand, the region corresponding to the stepped portion may have a structure in which two openings are formed in the outer portion.

  As described in claim 6, it is desirable that the intermediate bottom layer has the gap that is about half of the longitudinal length of the soldering material.

  As described in claim 7, it is desirable that the length of the interdigital material in the front-rear direction is about 4 to 5 mm.

  The invention of claim 8 is a shoe, wherein the shoe sole according to any one of claims 1 to 6 is used.

  In the present invention, a ventilation / breathable / waterproof layer is provided on the upper side of the wide opening with a midsole layer (binder material) sandwiched between them. It is blocked by the soldering material and does not reach the breathable and waterproof waterproof layer. Further, since the opening is wide and large enough to allow a plurality of tins to pass through when viewed from below, foreign matter that has entered the opening does not remain in the opening.

It is sectional drawing of the shoe sole which is one embodiment of this invention. (A)-(d) is a figure which shows the component of the said shoe sole, respectively. (A) (b) is the figure which looked at the said shoe sole from the lower side, respectively. (A) (b) is the figure which looked at the shoe sole of other embodiment from the lower side, respectively. (A) (b) is the figure which looked at the sole of another embodiment from the lower side, respectively. It is explanatory drawing of the sole of a foot.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the present specification, as shown in FIG. 6, the sole of the foot 101 is a footpad 102, a stepping portion 103 (front foot portion), a stepping portion 104 (medium foot portion), and a heel portion from the front side. The side with the thumb 102a from the center line L is referred to as an inner portion, and the side with the little finger is referred to as an outer portion 102b.

  As shown in FIG. 1, the shoe sole 1 is used for men's shoes (not shown), for example, and has a lower bottom layer 2, an intermediate bottom layer 3, a breathable moisture-permeable waterproof layer 4 and an upper bottom layer 5 in order from the lower side. A four-layer structure. Each of these layers 2 to 5 is formed of a material known or known as a shoe sole.

  As shown in FIG. 2A, the lower bottom layer 2 has three regions (outer portions) in the front-rear direction, each of an outer portion and an inner portion corresponding to the stepped portion 103 from the stepped portion 104 of the foot 101. Are divided into S1 to S3 and the inner portion is divided into S4 to S6). In each region, the rectangular wide opening 2a to 2e is located near the center of the shoe sole except for the region S6 corresponding to the inner portion of the step portion 104. Is formed. Here, when the line is drawn in the left-right direction, the width corresponding to the width of the openings 2a to 2e is the length of the portion where the openings 2a to 2e are provided (the total width of the sole). ) Of about 15 to 25%.

  As shown in FIG. 2B, the middle bottom layer 3 disposed on the upper side of the lower bottom layer 2 extends in the left-right direction and has a large number of cross sections each having a substantially rectangular cross section with a gap 3a (approximately 2 mm) in the front-rear direction. It is formed by the shape of the interdigital material 3b (length in the front-rear direction is approximately 4 to 5 mm). The length in the front-rear direction of the gap 3a is smaller than the length in the front-rear direction of the soldering material 3b, and forms a ventable portion.

As shown in FIG. 2 (c), the breathable moisture-permeable waterproof layer 4 disposed on the upper side of the midsole layer 3 is, for example, a polytetrafluoroethylene porous film, a urethane-based nonporous film, a urethane-based porous film, It is formed of a raw material formed into a film shape such as a hydrophilic polyester film, a nonwoven fabric made of polyethylene, polypropylene, polyester or the like, or a melt blown nonwoven fabric. In particular, a nonwoven fabric made of polyethylene, polypropylene, polyester, or the like, or a melt blown nonwoven fabric has good air permeability. The breathable and moisture permeable waterproof layer 4 only needs to have at least breathability or moisture permeability and waterproofness, and more preferably has breathability and moisture permeability and further has waterproofness. is there. Moreover, for example, polyurethane or cellulose nanofibers may be used for such a breathable moisture-permeable waterproof material. By constructing a breathable and breathable waterproof material using nanofibers, compared to the case of a breathable and breathable waterproof material using melt-blown nonwoven fabric, it increases the water pressure resistance and flex resistance while maintaining breathability. Can do. In addition, breathable and breathable waterproof materials using nanofibers are easy to stretch, and their performance does not change easily even when stretched. They are soft and difficult to wrinkle when making shoes, making it hard to finish. In particular, a breathable moisture-permeable waterproof material using polyurethane nanofibers is excellent in elongation, flexibility and durability. Specifically, for example, a waterproof interior member for shoes described in JP-A-2003-31803 can be used. That is, this member is made of a polyester fiber having a fiber diameter of 10 μm or less, has a basis weight of 50 to 250 g / m ² , and has an embossed and water-repellent melt blown nonwoven fabric as a main base material, A material obtained by reinforcing at least one surface of a melt blown nonwoven fabric with tricot as a main base material, and the air permeability according to JIS L 1096 of the above-mentioned embossed and water repellent melt blown nonwoven fabric is 1-2.
It is in the range of 5 cc / cm ² / sec and the water pressure resistance according to JIS L 1092A is in the range of 300 to 2000 mmH ₂ O.

As shown in FIG. 2 (d), the upper bottom layer 5 disposed on the upper side of the breathable moisture permeable waterproof layer 4 is a waterproof layer and corresponds to the openings 2a to 2e of the lower bottom layer 2 from the arch to the base of the toes. In a region up to the portion hitting, hole groups G1 to G5 including a plurality of through holes 5a penetrating from the front side to the back side are provided. The through holes 5a of the hole groups G1 to G5 are arranged in two rows, and the groups G1 to G2 are arranged in the openings 2a to 2e. That is, for each opening 2a to 2e, a plurality of through holes 5a (hole groups G1 to G5) having an opening area smaller than them are passed through the midsole layer 3 (gap 3a between the blind members 3b) and the breathable moisture permeable waterproof layer 4. , It communicates with air.

  The upper bottom layer 5 is made of rubber, for example. In addition to rubber, it may be formed by impregnating the fiber structure with a resin such as polyurethane resin such as polyurethane, EVA, TPU (thermoplastic polyurethane composition), etc. If you do.

  In the shoe sole 1 in which the respective layers 2 to 5 are laminated, the openings 2a to 2e of the lower bottom layer 2 and the hole groups G1 to G5 (through holes 5a) of the upper bottom layer 5 are respectively formed into the midsole layer 3 and the breathable moisture permeable waterproof layer. 4 opposite each other. And when it sees from the bottom in the state made into the shoe sole 1, as shown to Fig.3 (a), inside each opening 2a-2e is arrange | positioned with the clearance gap 3a in the front-back direction extending in the left-right direction. A plurality of the soldering materials 3b pass and a plurality of gaps 3a are arranged in the openings 2a to 2e. As described above, the openings 2a to 2e are wide, and the opening area becomes larger as it is seen that a plurality of soldering materials pass. In the shoe sole 1 (lower bottom layer 2) shown in FIG. 3A, a groove 2f is formed between the openings 2a to 2e, but the shoe sole 1A (lower bottom layer 2A) shown in FIG. ), The groove 2f of the lower bottom layer 2 can be omitted.

  According to the above-described shoe sole 1, the openings 2 a to 2 e of the lower sole layer 2, the gap 3 a of the midsole layer 3, and the breathable moisture permeable waterproof layer 4 between the inside and the outside of the men's shoe provided with the sole 1. And air enters and exits through the through holes 5 a of the upper bottom layer 5.

  The water outside the shoe, such as rainwater, tries to flow into the shoe through the openings 2a to 2e of the lower bottom layer 2 and the gap 3a of the midsole layer 3, but the upper side of the gap 3a of the midsole layer 3 is ventilated and breathable and waterproof. Since the layer 4 is closed, water does not flow into the through hole 5 a of the upper bottom layer 5.

  In addition, when walking, when the shoe sole 1 is not stepped on, the upper bottom layer 5, the breathable moisture permeable waterproof layer 4 and the midsole layer 3 bend downward and the lower bottom layer 2. Enter the openings 2a to 2e, and the spaces in the openings 2a to 2e are crushed. At this time, since the opening areas of the openings 2a to 2e are large, the spaces in the openings 2a to 2e are easily crushed.

  If there is water such as rain water in the gap 3 a of the midsole layer 3 or the openings 2 a to 2 e of the bottom layer 2, the water flows out from the bottom surface of the bottom layer 2 to the outside of the shoe sole 1. Further, when there is no water, the air in the gap 3a of the middle bottom layer 3 and the openings 2a to 2e of the lower bottom layer 2 is pushed out.

  On the other hand, after the space in the openings 2a to 2e is crushed, when returning to the state where the foot is not stepped on, air outside the shoe flows into the shoe sole through the openings 2a to 2e of the lower bottom portion 2.

  In this way, by using the walking and stepping of the person wearing the shoes, the space volume of the openings 2a to 2e is greatly changed and the pumping action is effectively exhibited, thus realizing efficient drainage and ventilation. can do.

  Since the openings 2 a to 2 e are provided on the bottom surface of the shoe sole 1, water outside the shoe sole such as rain water can easily enter the inside of the shoe sole, but a breathable moisture-permeable waterproof layer between the midsole layer 3 and the upper bottom layer 5. Since 4 is arranged, water can be prevented from entering the shoe. Therefore, with a simple structure in which the breathable moisture permeable waterproof layer 4 is provided, it is possible to ensure ventilation with the inside of the shoe while preventing water from entering the inside of the shoe.

Further, in the inner bottom layer 3, the length in the front-rear direction of the gap 3a formed between the soldering materials 3b is smaller than the length in the front-back direction of the soldering material 3, and the upper sides of the wide openings 2a to 2e are almost covered by the soldering material 3b. Therefore, even if a foreign object enters the openings 2a to 2e, the foreign object is blocked by the soldering material 3b (inner bottom layer 3) and does not reach the ventilation / breathable / waterproof layer 4. Therefore, the breathable moisture permeable waterproof layer 4 is protected, and damage to the breathable moisture permeable waterproof layer 4 is prevented. And since the opening 2a-2e is wide and it is so large that the plurality of soldering materials 3b pass when it sees from the lower side, a foreign material does not remain in the openings 2a-2e.

The embodiments disclosed above are all exemplifications, and the present invention is not limited to these embodiments, and can be implemented with appropriate modifications.
(i) The shape and arrangement of the openings provided in the lower sole layer can be appropriately changed depending on the size and shape of the shoe sole. For example, it may be as shown in FIGS. 4 (a) and 4 (b). A shoe sole 1C shown in FIG. 4A has a groove 2f, and a shoe sole 1D shown in FIG. 4B has no groove.
(ii) The shape of the opening may be circular as shown in FIGS. A shoe sole 1E shown in FIG. 5 (a) has a groove 2f, and a shoe sole 1F shown in FIG. 5 (a) has no groove 2f. Of the openings 2a ′ to 2e ′, two openings 2c ′ and 2c ′ are provided in the outer portion of the arch, and the rear opening 2c ′ is closer to the center than the front opening 2c ′.
(iii) The lower bottom layer is divided into a plurality of regions without the need to divide the outer portion and the inner portion of the portion corresponding to the stepped portion from the stepped portion into three regions in the front-rear direction. Except for the region corresponding to the inner portion of the stepped portion, it is only necessary to form a wide opening that is large enough to allow a plurality of tins to pass through when viewed from below.
(iv) In the above embodiment, the shoe sole according to the present invention is applied to men's shoes, but it can be applied without being limited to the type of shoes, and can be applied to other shoes such as women's shoes and athletic shoes. Can also be applied.

DESCRIPTION OF SYMBOLS 1-1F Shoe sole 2 Lower bottom layer 2a-2e Opening 2f Groove 3 Middle bottom layer 3a Gap 3b Sanding material 4 Breathable moisture-permeable waterproof layer 5 Upper bottom layer 5a

Claims (8)

A lower bottom layer in which a wide opening is formed;
An insole layer that is disposed on the upper side of the lower bottom layer, extends in the left-right direction, has a gap in the front-rear direction, and is formed of a soldering material that is disposed so as to pass through the plurality of openings;
A breathable breathable waterproof layer disposed on the upper side of the midsole layer;
An upper bottom layer disposed above the breathable moisture permeable waterproof layer and provided with a through hole corresponding to the opening of the lower bottom layer;
A shoe sole characterized in that the length of the gap in the front-rear direction is smaller than the length of the interdigital material in the front-rear direction.   The shoe sole according to claim 1, wherein a width of the opening is about 15 to 25% of a shoe sole width of a portion where the opening is provided. The lower bottom layer is divided into a plurality of regions in the front-rear direction, the outer part and the inner part of the part corresponding to the stepping part from the step part of the foot,
The shoe sole according to claim 1 or 2, wherein, in each of the regions, the opening is formed except for a region corresponding to an inner portion of the stepped portion. The lower bottom layer is divided into three regions in the front-rear direction, the outer portion and the inner portion of the portion corresponding to the stepped portion from the stepped portion of the foot,
The shoe sole according to claim 3, wherein, in each of the regions, the opening is formed closer to the center except for a region corresponding to an inner portion of the stepping portion. The lower bottom layer is divided into three regions in the front-rear direction, the outer portion and the inner portion of the portion corresponding to the stepped portion from the stepped portion of the foot,
In each of the regions, the opening is formed except for the region corresponding to the inner portion of the step portion, while the two regions are formed in the region corresponding to the outer portion of the step portion, The shoe sole according to claim 3, wherein the opening is closer to the center than the opening on the front side.   The shoe sole according to any one of claims 1 to 5, wherein the insole layer has the gap that is about half of the length in the front-rear direction of the blind material.   The shoe sole according to claim 6, wherein a length in the front-rear direction of the sliding material is about 4 to 5 mm.   A shoe using the shoe sole according to any one of claims 1 to 7.

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