JPH07327706A - Shoe sole - Google Patents

Abstract

PURPOSE:To provide a shoe sole having an air permeable and water impermeable film excellent in durability and improved air permeation characteristic and ventilation function irrespective of the structure of the front surface of sole and being capable of preventing infiltration of water into the shoe in case of breakage of the air permeable film. CONSTITUTION:This shoe sole comprises an outer sole part 7 having through holes 7a; a film carrier 5 having through holes 5a; an inner sole part 3 having through holes 3a; a lamination sheet 9 where a water impermeable and air permeable film is held between coarse woven cloth and fine woven cloth; and an inner material 11 for facilitating discharge of moist in a shoe body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sole loaded with a filling material for promoting breathability.

[0002]

2. Description of the Related Art Conventionally, a wide variety of personal items use a water-impermeable, breathable membrane having both waterproofness and breathability.
Especially, it is often used in sportswear and outdoor products. However, in shoes, it is only found in the insteps of trekking shoes using cloth, and its use for shoe soles has not yet spread. A structure in which a through-hole is provided on the outsole and a breathable film is attached to the inner surface of the outsole is also conceivable, but since the shoe sole is in direct contact with the ground surface, foreign matter such as sand penetrates the outsole from the outside. It is considered that there is an extremely high risk of damaging the breathable membrane itself through the holes. Furthermore, since the wearer's foot is always in close contact with the inner sole, the movement of air in the shoe is unexpectedly not easy, and it is considered that the function of the breathable membrane cannot be fully exerted. As a shoe to solve such a problem
Japanese Patent No. 9503 discloses the following structure.
That is, in a shoe sole having an outsole having a through hole and a water-impermeable and breathable membrane, a penetration hole at the outsole is inclined to prevent foreign matter from entering from the outside, and at the same time, an inclined penetration that occurs at each walking. The structure uses a distortion of the holes to promote air movement in the shoe.

[0003]

However, even if it is possible to prevent foreign matter from entering from the front bottom portion by merely inclining the through hole at the front bottom, the breathable membrane is always directly exposed to the outside world, and therefore, that problem still remains. There is a problem with durability. Also,
If the breathable membrane is damaged by long-term use or by the entry of foreign matter, water may easily enter. In addition, of course, possible wear on the outsole can reduce distortion of the through-holes and thus incomplete air movement. Therefore, the present invention, regardless of the wear of the outsole,
While enhancing the air permeability inside the shoe and the ventilation function to the outside of the shoe, at the same time it has a non-water permeable breathable membrane with excellent durability, and even if this breathable membrane is torn, water inside the shoe It is intended to provide a shoe sole capable of preventing entry.

[0004]

In order to achieve the above object, the present invention provides a front bottom having a through hole penetrating from the inner surface side to the ground surface side and a through hole penetrating from the inner surface side to the ground surface side. A membrane carrier which is laminated on the inner surface of the front bottom so that the through hole communicates with the through hole of the outer bottom, a water-impermeable gas-permeable membrane laminated on at least one surface of the carrier for the membrane, and an inner surface The inner sole having a through hole penetrating from the side to the grounding surface side, the shoe sole having a flat area capable of covering all of the through hole of the inner sole, and a plurality of projecting to the grounding surface side. The inner material provided with the convex portion is disposed between the membrane carrier and the inner sole without being fixed.

[0005]

【Example】

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. As shown in FIG. 1, a shoe sole 1 according to the present invention includes an upper 2, an inner sole 3, a midsole 5, a front sole 7, a laminate sheet 9, a midsole 11 and a shank 13.
It consists of The inner sole 3 sewn to the upper 2 forms the entire insole, and a large number of through holes 3a are formed between the tread portion and the toe portion (hereinafter, referred to as "trampling portion") from the upper surface to the ground surface side. Penetrates into. The diameter of the through hole 3a can be appropriately changed according to the use of shoes such as for business use and sports use. For example, for sports use, the diameter can be made relatively large, or the distribution of the through holes can be improved. Ventilation is promoted more by increasing the density.

The midsole 5 corresponds to the membrane carrier of the present invention. The midsole 5 is sponge-shaped, and in this embodiment, it is sewn to the thin leather 8 and fixed to the upper 2, and at the same time, the front bottom 7 is also sewn. It has a large peripheral part. Similarly to the inner sole 3, the midsole 5 is also provided with a large number of through holes 5a in its stepped portion. The diameter of the through hole 5a is not particularly limited, but if it is formed larger than the diameter of the through hole 3a of the inner sole 3 or the through hole 7a of the front bottom 7, these through holes 3a, 5a. , 7a is easy to align, which is preferable.

The midsole 5 has a through hole 5a.
The laminate sheet 9 is fixed so as to cover all of the above from both sides. The laminated sheet 9 includes a woven cloth 9a having a coarse mesh (for example, a product name "Tricot" manufactured by Asahi Kasei Apico Co., Ltd.), and a water-impermeable breathable membrane 9b (for example, a product name "Microtex" manufactured by Nitto Denko Corporation). And has a three-layer structure of fine polyester woven cloth 9c or non-woven cloth. As the fixing method, first, gluing is applied to the peripheral portion of the woven cloth 9a having coarse mesh, and it is applied to a predetermined position of the midsole 5, and the breathable membrane 9b is placed thereon. Next, the polyester woven fabric 9c glued to the peripheral portion is overlapped. The woven cloth 9a having a coarse mesh and the breathable membrane 9b are fixed by permeating the glue from the coarse mesh of the woven cloth 9a. Although the laminated sheet 9 is fixed to both sides of the midsole 5 here, only one of them may be attached.

The front bottom 7 has a through hole 3a in the inner sole 3 and a through hole 5 in the midsole 5 at the stepped portion thereof.
a and a through hole 7a communicating with the laminate sheet 9
Is provided. Since the convex portion of the tread pattern (not shown) formed on the ground contact surface side of the front bottom 7 directly supports the weight during walking, if the through hole 7a is provided in the concave portion, foreign matter such as pebbles will be prevented. The possibility of clogging can be reduced.

The midsole 11 is a plate-shaped flexible urethane having a large number of projections 11a protruding toward the ground contact surface, and a dimple-shaped shallow recess 11 on the opposite surface, that is, the inner surface.
b is formed. The midsole 11 has a flat area capable of covering all the through holes 3a provided in the inner sole 3, and the midsole 5 (in this embodiment, an inner surface side laminated sheet fixed to the midsole 5). 9)
The inner sole 3 and the inner sole 3 are loaded without being fixed.

According to the shoe sole of this embodiment, the outsole 7 is used when walking.
The weight of the wearer is pressed through the inner sole 3 to the midsole 11 having the plurality of convex portions 11a every time the ground contact is made. The midsole 11 has a flat area capable of covering all the through holes 3a of the inner sole 3, but is arranged without being fixed between the midsole 5 and the inner sole 3. Therefore, due to this weighting, the inside 11 is distorted, and the moisture inside the upper 2 passes through the through hole 3a of the inner sole 3 from the slight gap generated at the peripheral edge of the inside 11 to the ground contact surface side and the respective convex portions 11a. Move into the space sandwiched between.
Then, by repeating this distortion, through the pores of the breathable film 9b of the laminate 9 provided on the ground plane, the through holes 5a of the midsole 5 which is the film carrier, and the through holes 7a of the outsole 7, The moisture in the shoes is discharged. By releasing the weight from the inside 11, the new air is taken into the space of each convex portion 11a while being restored to the normal shape. Repeating pressurization and depressurization for the medium object 11 during walking, that is, the medium object 11
The fresh air is taken in from the peripheral edge of the midsole 11 by repeating the distortion of (1) and the moisture in the shoe is discharged as described above. On the other hand, water that enters from the ground contact surface side through the through hole 7a of the outsole 7 during walking does not enter the inside of the shoe because the impermeable membrane 9b is provided. Even if the laminate sheet 9 is torn and the function of the breathable membrane 9b is impaired due to long-term use, the flat area of the midsole 11 is large enough to cover all the through holes 3a provided in the inner sole 3. Therefore, water is prevented from permeating the inside 11 of the shoe, that is, the inside of the inner sole 3, because of being blocked by the inner material 11.

In the above-mentioned embodiment, the stepped portion is the location where the through-hole as the ventilation hole is improved and the ventilation is improved, but the heel of the shoe is taken into consideration in consideration of the application of the shoe and the expected environment of use. It is also possible to provide the part, the arch part, the heel part or the entire surface. Further, the through hole 7a of the outsole 7 is, as in the above embodiment, only the stepped portion, and the through holes 3a and 5a of the inner sole 3 and the midsole 5 are not stepped on the heel portion or the heel portion,
Alternatively, it may be provided entirely. In this case, since the shank is loaded in the tread portion of the Goodyear welt type shoe, it is preferable that the shank be provided with a groove so that moisture in the tread portion and the heel portion can be sent to the tread portion. Further, in the present embodiment, as shown in the figure, an example applied to Goodyear-welt type shoes is explained, but it can be applied to shoes manufactured by other manufacturing methods, for example, cemented type and McKay type shoes. Of course. However, in a shoe using a manufacturing method in which the upper 2, the inner sole 3, and the outsole 7 are sewn together from the inside like the McKay type, the seams between the upper 2 and the outsole 7 can be obtained only by the configuration of the above embodiment. It cannot prevent water from entering. Therefore, in the case of a McKay type shoe, the upper surface of the inner sole 3 may be separately loaded with a non-permeable breathable insole 15 so as to cover the entire inner surface of the insole including the stitched portion (see FIG. 4). It is advisable to adhere a water-impermeable tape only to the area.

[0013]

According to the shoe sole of the present invention, since the inner material having the convex portion is loaded without being fixed between the inner sole and the membrane unit, it is possible to pressurize the ground when walking.・ Repeating depressurization promotes the movement of air inside the shoe, and the flat area of the inside is large enough to cover all the through holes of the inner sole. It is difficult for water to penetrate into. Further, since the breathable membrane also has a structure in which it is laminated with a woven cloth having a coarse mesh and a woven cloth having a fine mesh, it has higher durability than before.

[Brief description of drawings]

FIG. 1 is an exploded view of a shoe sole according to an embodiment of the present invention.

FIG. 2 is a sectional view of a shoe sole according to the above embodiment.

FIG. 3 is an enlarged cross-sectional view showing a laminated sheet and an inner material used for the shoe sole according to the above-mentioned embodiment.

FIG. 4 is a cross-sectional view showing an example in which the shoe sole of the above-described embodiment is applied to a McKay type manufacturing shoe.

[Explanation of Codes] 1 Sole 2 Upper 3 Inner sole 5 Midsole 7 Outsole 8 Thin leather 9 Laminated sheet 11 Inside 13 Shank 15 Insole

Claims (2)

[Claims] 1. A front bottom having a through hole penetrating from the inner surface side to the ground contact surface side, and a through hole penetrating from the inner surface side to the ground contact surface side so that the through hole communicates with the through hole on the outer bottom surface. A membrane carrier laminated on the inner surface of the front bottom, a water-impermeable breathable membrane laminated on at least one surface of the membrane carrier, and an inner sole having a through hole penetrating from the inner surface side to the ground surface side, In a shoe sole having a flat surface area capable of covering all of the through holes of the inner sole, the midsole provided with a plurality of protrusions protruding toward the ground contact surface is used as a membrane carrier and an inner sole. The shoe sole is characterized in that it is disposed between and without being fixed. 2. The breathable membrane, a breathable membrane body, a fine woven fabric or nonwoven fabric laminated on one surface of the breathable membrane body, and a coarse woven fabric laminated on the other surface. The shoe sole according to claim 1, wherein the sole comprises a woven fabric side having a coarse mesh bonded to the membrane carrier with an adhesive.