JP2016086968A - Air-permeable shoe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-permeable shoe in which air permeability inside a shoe is improved.SOLUTION: In the air-permeable shoe in which a sole is joined to the primary part of the shoe including an upper member and an insole member, the upper member has a shape with a notched part in the inner section covering at least the first metatarsal bone head of a person and/or in the outer section covering at least the fifth metatarsal bone head. The insole member is an air-permeable member and has a shape formed by each extending a section corresponding to the notched part outward from the inner edge of the insole and/or outward from the outer edge thereof. As a characteristic of the air-permeable shoe, the notched part of the upper member and the notched part of the insole member are sewn together, so that the upper member and the insole member are joined to each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a breathable shoe, and more particularly to a breathable shoe with improved breathability inside the shoe, particularly in the vicinity of the toe of the upper and the arch of the insole.

  If a shoe is worn for a long time, the foot will sweat and the inside of the shoe will be in a high humidity environment, and bacteria and athlete's foot will grow and cause bad odor. Therefore, a breathable shoe is required in order to suppress foot stuffiness in the shoe, and various inventions and devices have been proposed so far.

  For example, Patent Literature 1 proposes a breathable shoe that can discharge moisture accumulated on the back side of the foot to the outside from a portion corresponding to the side of the foot. In the breathable shoe described in Patent Document 1, the insole member 4 is composed of at least three pieces, and the end surface of the part that constitutes the upper member 5 and extends from the insole composed of the breathable member 6; There is provided an insole member 4 manufactured by butting and sewing an end surface of an insole made of the same material as the breathable member 6 (paragraphs [0041] to [0045] in Patent Document 1).

Japanese Patent No. 5255933

However, in the breathable shoe described in Patent Document 1, a large number of stitches exist because the inner end surface or the outer end surface of the midsole and the end surface of the extending portion constituting the upper member 5 are sewn. . For this reason, an air passage route in which air passes from the inside of the insole to the outside of the shoe through the extended portion is obstructed, and it becomes difficult to ensure high air permeability.
Therefore, the breathable shoes described in Patent Document 1 have room for improvement in the air permeability from the inside of the insole to the outside.

  Therefore, the present invention solves the above-described problem, and eliminates the stitched portion between the above-described extended portion of the upper and the insole in the breathable shoe, thereby improving the breathability of the shoe. Is to provide shoes.

  As a result of intensive studies to eliminate the stitched portion of the upper part of the upper shell and the insole in the breathable shoe and to improve the breathability of the inside of the shoe, the present inventors have found that the insole portion has no seam portion. By using a material, i.e., a one-piece insole member, air is extended from the inside of the insole by the stitched part between the above-described extension part and the insole of the upper shell caused by stitches as described above. The present inventors have found that it is possible to eliminate the problem of obstructing the ventilation path of passing through the shoe to the outside of the shoe, and to improve the breathability inside the shoe, and the present invention has been completed.

That is, the present invention
(1) In a breathable shoe in which a shoe sole is joined to a shoe main portion including a shell member and an insole member,
The crust member has a shape in which at least a medial portion covering the human first metatarsal bone head and / or at least a lateral portion covering the human fifth metatarsal bone head is a cutout portion. ,
The insole member is a breathable member, and has a shape in which a portion corresponding to the cutout portion is formed to extend outward from the inner edge of the insole and / or outward from the outer edge. And a notch portion of the upper member and a portion corresponding to the notch portion of the insole member are stitched together so that the upper member and the insole member are joined to each other. ,
(2) The breathable shoe according to (1), wherein the breathable member is a double raschel structure member,
(3) The breathable shoe according to (1) or (2), wherein the insole member has a cut.

  The breathable shoe of the present invention uses an insole member consisting of one piece, so that the breathability of the inside of the shoe, etc., compared to a breathable shoe using an insole member composed of three conventional pieces, etc. Can be improved.

It is a side view which shows one embodiment of the breathable shoes of this invention. It is a side view which shows one embodiment of the upper member used for this invention. It is a top view which shows one embodiment of the insole member used for this invention. It is the perspective view which shows one embodiment of the air permeable member which comprises the insole member used for this invention, (a) and a side view (b). They are the top view (a) which shows another embodiment of the insole member used for this invention, and the AA sectional view (b) of the insole member shown to the said top view (a). It is a graph which shows the result of the humidity measurement of the toe vicinity of the upper shell in Example 2. It is a graph which shows the result of a humidity measurement near the arch of the insole in Example 2.

  For example, as shown in FIG. 1, the breathable shoe of the present invention basically has a structure in which a shoe sole 4 is joined to a shoe main portion 3 including an upper member 1 and an insole member 2.

First, the upper member 1 used in the present invention will be described.
The shape of the upper member 1 used in the present invention is such that, in a typical upper member of a shoe, at least a medial part covering the first metatarsal head of a human and / or at least a fifth metatarsal head of a human. It is the shape where the outer side part which coat | covers becomes the notch part 5a (5b). Therefore, the shape of the other part of the upper shell member 1 is basically not particularly limited as long as it has the cutout part 5a (5b).

  Further, in the present invention, if the upper member 1 has a shape having the cutout portion 5a (5b), the upper member 1 does not need to be integrally formed. It is also possible to use the provided upper member or the upper member provided with a fastener at the heel portion.

  The shape of the cutout portion 5a (5b) is not particularly limited as long as it does not affect the sewing operation between the upper shell member 1 and the midsole member 2, and for example, a substantially rectangular shape, a substantially trapezoidal shape, and a substantially Examples include rhombus shapes, streamline shapes such as airfoil shapes and propeller shapes. An example of the upper member 1 is shown in FIG.

  In the present invention, by forming the upper shell member 1 as described above, moisture inside the shoe can be discharged to the outside through the insole member 2 coupled to the notch portion 5a (5b).

  Here, it is also conceivable to provide the notch 5a (5b) near the heel of the upper member 1 instead of near the toe of the upper member 1. However, the portion of the shoe where moisture accumulates is particularly near the toes of the upper shell and the arch of the insole, and even when the shoe is worn, ventilation between the foot and the heel of the shoe. Since the path is secured, the notch portion 5a (5b) is provided near the toes of the upper crotch so that the moisture inside the shoe can be discharged to the outside.

  On the other hand, it is conceivable to provide the cutout portion 5a (5b) near both the toe and the heel of the upper shell. In such a case, it is difficult to maintain high shape retention as a shoe. There is a possibility that the foot contact (comfort of shoes) is not good.

  Moreover, it does not specifically limit as a member which comprises the upper shell member 1, For example, cloth, natural leather, synthetic leather, artificial leather, cloth material, synthetic fiber, those combinations, etc. are mentioned.

Next, the insole member 2 used in the present invention will be described. The shape of the insole member 2 used in the present invention is the above-described cutout portion 5a of the upper member 1 when it is combined with the upper member 1. In order to produce the shoe main part 3 with (5b) closed, it is necessary to have a shape having a part for closing the cutout part 5a (5b) on both sides or one side of the insole. Shapes formed by extending portions 2a (2b) corresponding to the cutout portions of the upper shell member 1 outward from the inner edge of the insole and / or outward from the outer edge (hereinafter also referred to as extended portions) To do).

  Further, as described above, since the cutout portion 5a (5b) of the upper shell member 1 is provided in the vicinity of the toe, the extended portion 2a (2b) of the insole member 2 is closer to the toe of the insole. Is provided.

  The shape of the extended portion 2a (2b) of the insole member 2 is that when the upper member 1 and the insole member 2 are joined to form the shoe main portion 3, the entire cutout portion of the upper member 1 is formed. Can be closed by the extended portion 2a (2b). For example, as described above, the shape similar to the shape of the cutout portion 5a (5b) of the upper member 1 can be mentioned. An example of the insole member 2 is shown in FIG.

  Further, the length X of the extending portion 2a (2b) of the midsole member 2 is from the one end of the extending portion 2a (2b) to the other end in the length direction of the midsole member 2. The length of the line drawn parallel to the center line. FIG. 3 shows an example of the length X of the extended portion 2a (2b) of the midsole member 2.

  The length of the extended portion 2a (2b) of the insole member 2 must affect the stitching operation between the cutout portion 5a (5b) of the upper member and the extended portion 2a (2b) of the insole member 2. Although not particularly limited, it is preferably 20% to 50% of the foot length size of the shoe. If the length is short, the moisture on the back of the foot cannot be discharged sufficiently. On the other hand, if the length is long, the extension 2a (2b) of the insole member 2 is likely to enter the heel, There is a risk of increasing the number of manufacturing processes, such as the need to cut the extended portion 2a (2b) in order to prevent the occurrence.

The width of the extended portion 2a (2b) of the insole member 2 refers to the length of a line drawn perpendicularly from the apex of the extended portion 2a (2b) to the inner edge of the insole. FIG. 3 shows an example of the width Y of the extended portion 2a (2b) of the midsole member 2.
The width Y of the extended portion 2a (2b) of the insole member is preferably protruded from the insole by 10 mm or more in the crust direction when molded as a shoe from the viewpoint of sufficiently discharging the moisture on the back of the foot.

In the present invention, since the insole member 2 is integrally formed and has no stitches, the breathable shoe of the present invention improves the breathability inside the shoe as compared with the conventional breathable shoe. Can do.
Further, it is durable against a load applied during walking, particularly a load applied near the arch.

  Moreover, as a member which comprises the insole member 2, although a pulp material, material | dough, a foamed ethylene-vinyl acetate copolymer (EVA) etc. are mentioned, from a viewpoint of ensuring air permeability fully, an air permeable member is mentioned. 6 is preferred.

  Here, the breathable member 6 is, for example, a sheet having a structure in which the skin layers 61 and 62 are provided on both surfaces of the intermediate layer 63, and the intermediate layer 63 has a ventilation path in the thickness, width, and length directions. Thus, it is a layer having air permeability, and the skin layers 61 and 62 are layers having air permeability at least in the thickness direction. FIG. 4 shows an example of the breathable member 6.

  The breathable member 6 is preferably a double raschel structure member in which a surface 71 and a lining 72 are connected by a connecting thread 73, and fabrics 81 and 82 are laminated on both sides of a polyurethane foam cutting sheet 83 having a three-dimensional network structure. Can be used well. Alternatively, the polyurethane foam cutting sheet may be replaced with a fiber material 93 such as synthetic resin cotton. When polyurethane foam is used, it is preferable to use a cell membrane removed by an explosion method or the like. The pore volume of the intermediate layer 63 is preferably 90% to 99% as a value according to JIS-L1096 in order to improve the air permeability of the air passage.

As the structure of the skin layer 61, the skin layers 61 and 62 have a mesh structure so that moisture on the back surface of the foot can be easily taken into the breathable member and easily discharged from the portion corresponding to the side surface of the foot. Those are preferred. As the skin layers 61 and 62, those having an air permeability of 100 to 1000 cm ³ / cm ² · S in accordance with air permeability (Fragile method) defined in JIS-L1096 can be suitably used.

  The thickness of the insole member 2 is not particularly limited. However, in the case of a double raschel cloth in order to form a good ventilation path, the distance between the inner surface of the outer fabric 61 and the inner surface of the lining 62 connected by the connecting yarn is as follows. A thickness of 0.5 mm to 5.0 mm is preferable. In the case of a polyurethane foam cut sheet or a sheet in which fabric is laminated on both sides of the fiber material, the thickness of the cut sheet or fiber material is 0.5 mm to 5. The one set to 0 mm is preferable. If the distance between the inner surfaces or the thickness of the cut sheet is less than 0.5 mm, the moisture may not be sufficiently discharged. Become high. Further, in the present invention, two breathable members can be stacked and used.

Finally, the shoe sole 4 used in the present invention will be described.
In the present invention, the material constituting the shoe sole 4 is not particularly limited. For example, non-foamed or foamed materials such as ethylene-vinyl acetate copolymer (EVA), soft polyvinyl chloride, polyurethane, rubber, etc. Can be suitably used.

Next, production of the breathable shoes of the present invention will be described. The breathable shoe of the present invention is basically manufactured by joining the upper member 1 and the insole member 2 to produce the shoe main portion 3 and joining the shoe sole 4 thereto. An example of this will be described next. As the crust member 1, at least a medial portion covering the human first metatarsal bone head and / or an outer portion covering at least the human fifth metatarsal bone head have a cutout portion 5a (5b), The notch portion 5a (5b) is prepared in a substantially rhombus shape (see, for example, FIG. 2). Further, the insole member 2 has an extending portion 2a (2b) outward from the inner edge of the insole and / or outward from the outer edge, and the extending portion 2a (2b) has a substantially rhombus shape. Then, a component composed of the breathable member 6 is prepared (see, for example, FIG. 3). Then, for example, by hand-sewing, sewing using a sewing machine or joining using an adhesive, the end surface of the cutout portion 5a (5b) of the upper member 1 and the end surface of the extended portion 2a (2b) of the midsole member 2 And suture. Further, the end surface of the portion other than the cutout portion 5a (5b) of the upper member 1 and the end surface of the portion other than the extended portion 2a (2b) of the midsole member 2 are similarly stitched to form the shoe main portion 3. To do.

  Here, when the upper member 1 and the insole member 2 are combined, if the insole member 2 having a notch is used, the connecting operation becomes easy, and the working efficiency can be increased. The position and length of the cut portion 7 may be appropriately designed depending on the shape of the midsole member 2. Specifically, since a part of the sewing machine base can be taken out from the cut portion 7 at the time of sewing, even the insole member 2 having a complicated shape as used in the present invention can be easily used. And can be sutured. In particular, it is preferable to have a notch in the center of the midsole member 2. FIG. 5 shows an example of the insole member 2 having a cut portion at the center.

  In addition, it is preferable to sew the upper shell member 1 and the midsole member 2 so as not to cause wrinkles in the midsole member 2. If wrinkles occur, the ventilation path of passing from the inside of the insole to the outside of the shoe through the extended portion is obstructed, and there is a possibility that sufficient ventilation cannot be ensured. Further, means for stitching the end surface of the cutout portion 5a (5b) of the upper member 1 and the end surface of the extended portion 2a (2b) of the midsole member 2, and the cutout portion 5a (5b) of the upper member 1 Means for stitching the end surface of the other portion and the end surface of the portion other than the extending portion 2a (2b) of the midsole member 2 may be the same or different.

  Finally, the shoe sole 4 is integrally formed with the shoe main portion 3 obtained above by injection molding, or the shoe sole 4 formed in advance is joined to the shoe main portion 3 obtained above by an adhesive. Thus, the breathable shoe of the present invention is completed.

An example of the breathable shoe 10 of the present invention produced by the above manufacturing method is shown in FIG.
Since the breathable shoe of the present invention uses a breathable member composed of one piece as an insole member, when the shoe is worn, there is almost no foreign body feeling on the sole, but from the aspect of comfort, It is preferable to use a breathable insole.
Examples of such insoles include resin foams such as urethane foam and EVA foam, which are provided with a large number of through-holes, and are formed with irregularities on the surface to facilitate air passage, or both. Insole.

  Hereinafter, the present invention will be described in more detail based on examples and comparative examples, but the present invention is not limited to these examples.

[Example 1: Production of breathable shoes]
As the crust member 1, the inner part covering the first metatarsal bone head and the outer part covering the fifth metatarsal bone head have a notch part 5 a (5 b) having a substantially rhombus shape, and polychlorinated What comprised vinyl (PVC) leather and double raschel was prepared. In addition, the insole member 2 has an extended portion 2a (2b) having a substantially rhombus shape outward from the inner edge of the insole and outward from the outer edge, and has a notch in the center, and The thing which consists of double raschel was prepared. Next, in order to prevent wrinkles in the portion 2a (2b) of the insole member 2, the notched portion 5a (5b) of the upper member 1 and the portion 2a (2b) of the insole member 2 are machined. Used to sew. Similarly, a portion other than the cutout portion 5a (5b) of the upper shell member 1, a portion other than the portion 2a (2b) of the midsole member 2, and a center incision of the midsole member are also sewn, and the shoe main body 3 was produced.

  Next, the shoe main portion 3 obtained as described above was attached to the last of the foot type, and the shoe sole 4 formed in advance was adhered to obtain a breathable shoe 10 having a structure as shown in FIG.

[Example 2: Humidity measurement of breathable shoes]
A humidity sensor MSHTDL-16 (manufactured by Cisco) was installed in the breathable shoes obtained in Example 1, and the humidity in the shoes during walking was measured.
Each condition in humidity measurement is as follows.

[Open air]
20 ° C, 60% RH

[Walking conditions]
Using a treadmill (manufactured by Alinco, AFW 3109), the patient walked for 30 minutes at a speed of 4 km / hour. During walking, wind of 2.5 m / sec was applied to the shoes with a fan (weak). This wind speed is at the same level as the monthly average value of average wind speed in Tokyo (around 2008 to June 2013, issued by the Japan Meteorological Agency).

[sample size]
26.0cm

[Sensor installation location]
Near the toes of the upper shell member, near the arch of the midsole member

Moreover, the shoe produced by the method similar to Example 1 was used as a comparative example except having used the insole member comprised from three parts as the insole member 2. FIG.
The results of humidity measurement are shown in FIGS.

  From the results of FIGS. 6 and 7, the breathable shoe of Example 1 is about 21% lower in humidity near the toe of the upper than the shoe of the comparative example, and about 16% near the arch of the insole. The humidity drop was confirmed. In terms of the experience, I felt that the toes were cool with little heat accumulation.

DESCRIPTION OF SYMBOLS 1 ... Shell member 2 ... Insole member 2a ... Extension part 2b ... Extension part 2c ... Toe part 2d ... Heel part 3 ... Shoe main part 4 .... -Sole 5: Notch portion of the upper member 5a ... Notch portion of the upper member 5b ... Notch portion of the upper member 6 ... Breathable member 61 ... Skin layer 62 ... Skin layer 63 ... Intermediate layer 71 ... Outer material 72 ... Lining 73 ... Connecting yarn 81 ... Cloth 82 ... Cloth 83 ... Polyurethane foam cutting sheet 93 ... Textile material 7 ... Cut portion 10 ... Breathable shoe X ... Length Y of extension portion ... Width of extension portion

Claims (3)

In the breathable shoe in which the shoe sole is joined to the shoe main portion including the upper member and the insole member,
The crust member has a shape in which at least a medial portion covering the human first metatarsal bone head and / or at least a lateral portion covering the human fifth metatarsal bone head is a cutout portion. ,
The insole member is a breathable member, and has a shape in which a portion corresponding to the cutout portion is formed to extend outward from the inner edge of the insole and / or outward from the outer edge. And a notch portion of the upper member and a portion corresponding to the notch portion of the insole member are stitched together so that the upper member and the insole member are joined to each other. .   The breathable shoe according to claim 1, wherein the breathable member is a double raschel structure member.   The breathable shoe according to claim 1, wherein the insole member has a cut.

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