JP3429857B2 - Shoe sole - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole loaded with a midsole that promotes breathability. 2. Description of the Related Art Heretofore, there have been a wide variety of personal items using a water-impermeable gas-permeable membrane having both waterproofness and gas-permeability.
In particular, it is frequently used for sportswear and outdoor equipment. However, shoes are used only in the upper part of trekking shoes or the like using cloth, and their use for shoe soles is not yet widespread. It is conceivable to simply provide a through hole in the outsole and attach a breathable film to the inner surface of the outsole.However, since the shoe sole is in direct contact with the ground surface, foreign substances such as sand from the outside penetrate the outsole. It is considered that there is a very high risk of damaging the breathable membrane itself through the holes. Further, since the wearer's feet are always in close contact with the inner sole, the movement of air in the shoes is unexpectedly difficult, and it is considered that the function of the breathable membrane cannot be sufficiently exerted. As a shoe that solves such a problem, Japanese Utility Model Application 63-9
Japanese Patent Publication No. 9503 discloses the following structure.
That is, in a shoe sole having a through-sole having a through-hole and a water-impermeable permeable membrane, the through-hole in the outsole is inclined to prevent entry of foreign matter from the outside, and at the same time, an inclined penetrating that occurs every time walking is performed. The configuration is such that the air movement in the shoe is promoted by utilizing the distortion of the hole. [0003] However, even if simply inclining the through hole in the outsole can prevent foreign substances from entering from the outsole portion, the gas permeable membrane is always directly exposed to the outside world. Still have a problem with its durability. Also,
If the gas permeable membrane is damaged due to long-term use or entry of foreign matter, water may easily enter. In addition, possible outsole wear can reduce through-hole distortion and thus imperfect air movement. Therefore, the present invention has almost no relation to the wear of the outsole,
While improving the air permeability inside the shoe and the ventilation function to the outside of the shoe, it also has a non-permeable gas permeable membrane with excellent durability, and even if this gas permeable membrane breaks, water in the shoe will It is an object to provide a shoe sole that can prevent entry. In order to achieve the above object, the present invention provides an outsole having a through hole penetrating from the inner surface side to the grounding surface side, and penetrating from the inner surface side to the grounding surface side. A membrane carrier having a through-hole and laminated on the inner surface of the outsole such that the through-hole communicates with the through-hole on the outsole, and a non-permeable gas-permeable 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 plane side, and having a flat area capable of covering all the through holes of the inner sole, the midsole having a plurality of convex portions protruding, between the film carrier and the inner sole, arranged without sticking, also, the
A gas permeable membrane is formed on the gas permeable membrane main body and one surface of the gas permeable membrane main body.
Woven or non-woven fabric to be laminated and the other side
Woven cloth, which is made of
The woven fabric side is adhered to the membrane carrier . 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, an outsole 7, a laminate sheet 9, a midsole 11 and a shank 13.
It is composed 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 step portion and the toe portion (hereinafter, referred to as a "stepping portion") from the upper surface to the ground surface. Penetrates through. The diameter of the through-hole 3a can be appropriately changed according to the use of the shoe, such as for business or sports. For example, in the case of sports, the diameter of the through-hole 3a is made relatively large, or the distribution of the through-holes is increased. Higher densities promote better ventilation. The midsole 5 corresponds to the carrier for a membrane in the present invention. The midsole 5 is in the form of a sponge. In the present embodiment, the midsole 5 is sewn to the fine leather 8 and is fixed to the upper 2 and, at the same time, is sewn to the outer sole 7 described below. It has a large peripheral edge. Similarly to the inner sole 3, the midsole 5 is provided with a large number of through holes 5a at the stepped portion thereof. The diameter of the through hole 5a is not particularly limited. However, if the diameter of the through hole 3a of the inner sole 3 or the diameter of the through hole 7a of the outsole 7 is larger than that of the through hole 3a, these through holes 3a, 5a , 7a is preferred because it facilitates the alignment. The midsole 5 has a through hole 5a.
A laminate sheet 9 is fixed so as to cover the entirety from both sides. The laminate sheet 9 includes a coarse woven cloth 9a (for example, trade name "Tricot" manufactured by Asahi Kasei Apico Co., Ltd.) and a non-permeable air-permeable membrane 9b (for example, trade name "Microtex" manufactured by Nitto Denko Corporation). And a three-layer structure of finely woven polyester fabric 9c or nonwoven fabric. In the fixing method, first, the peripheral edge of the coarse woven fabric 9a is glued, applied to a predetermined portion of the midsole 5, and the gas permeable membrane 9b is stacked thereon. Next, the polyester woven fabric 9c glued to the peripheral portion is overlaid. The coarse woven cloth 9a and the gas permeable membrane 9b are fixed by the permeation of the paste from the coarse woven cloth 9a. Although the laminate sheet 9 is fixed to both surfaces of the midsole 5 here, only one of the surfaces may be fixed. The outsole 7 has a through hole 3a of the inner sole 3 and a through hole 5
a through-hole 7a communicating with a through the laminate sheet 9
Is provided. In addition, since the convex portion of the tread pattern (not shown) formed on the ground contact surface side of the outsole 7 directly supports the load during walking, if the through hole 7a is provided in the concave portion, foreign matters such as pebbles will be removed. The possibility of clogging can be reduced. The middle object 11 is a plate-shaped flexible urethane formed with a number of convex portions 11a protruding toward the grounding surface, and a dimple-shaped shallow concave portion 11 is provided on the opposite surface, that is, on the inner surface.
b is formed. The midsole 11 has a flat area capable of covering all the through holes 3 a provided in the inner sole 3, and the midsole 5 (in this embodiment, an inner laminate sheet fixed to the midsole 5) 9)
And the inner sole 3 without being fixed. [0011] According to the sole of the present embodiment, the outsole 7 during walking.
Every time the body comes into contact with the ground, the weight of the wearer is pressurized through the inner sole 3 to the midsole 11 having the plurality of protrusions 11a. The midsole 11 is disposed without being fixed between the midsole 5 and the inner sole 3 in spite of having a flat area capable of covering all the through holes 3 a of the inner sole 3. As a result, the middle object 11 is distorted by this load, and the moisture in the upper 2 wraps around a small gap generated at the peripheral edge of the middle object 11 through the through hole 3a of the inner sole 3 toward the ground contact surface side, so that each of the projections 11a Move into the space between the.
Then, by repeating this distortion, through the pores of the permeable membrane 9b of the laminate 9 provided on the ground surface side, the through holes 5a of the midsole 5 which is a carrier for the membrane, and the through holes 7a of the outsole 7 Moisture inside the shoes is exhausted. The middle object 11 is released from the load, and takes in new air into the space of each convex portion 11a while restoring to the normal state. Repeated pressurization and depressurization of the middle object 11 during walking, ie, the middle object 11
By repeating the distortion, the fresh air is taken in from the periphery of the midsole 11, and the moisture in the shoe is discharged as described above. On the other hand, the water that enters from the ground contact surface side through the through hole 7a of the outsole 7 during walking does not enter the shoe because the non-permeable air-permeable membrane 9b is provided. Even if the laminate sheet 9 is torn due to long-term use and the function of the gas permeable membrane 9b is impaired, the flat area of the midsole 11 is large enough to cover all the through holes 3a provided in the inner sole 3. Because of this, water is prevented from penetrating into the shoe, that is, the inside of the inner sole 3, because of being blocked by the midsole 11. In the above embodiment, the stepping portion is provided at the place where the through hole as the ventilation hole is provided to improve the air permeability inside the shoe, but the heel of the shoe is taken into consideration in consideration of the use of the shoe and the assumed use environment. It is also possible to provide a part, an arch part, a heel part or the whole surface. Also, as in the above embodiment, the through hole 7a in the outsole 7 has only a stepping portion, and the through holes 3a and 5a in the inner sole 3 and the mid sole 5 do not step on the heel portion,
Or you may make it provide in the whole. In this case, since the shank is loaded in the stepping portion in the Goodyear welt type shoes, it is preferable that the shank is provided with a groove so that the moisture in the stepping portion and the heel portion can be sent to the stepping portion. Further, in the present embodiment, as shown in the drawings, an example in which the present invention is applied to a Goodyear welt-type shoe is described, but the present invention can be applied to shoes manufactured by another manufacturing method, for example, a cemented type or Mackay type shoe. 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 seam between the upper 2 and the outsole 7 can be obtained only with the configuration of the above embodiment. Inability to prevent water from entering. Therefore, in the case of the Mackay type shoes, the upper surface of the inner sole 3 is separately loaded with a non-permeable air-permeable insole 15 so as to cover the entire inner surface of the insole including the sewn portion (see FIG. 4). It is good to adhere a water-impermeable tape only to the part. According to the shoe sole according to the present invention, since the midsole having the convex portion is loaded without being fixed between the inner sole and the membrane single piece, the footwear can be used during walking while walking. Repeated pressurization and decompression in the above promotes air movement in the shoe, and the flat area of the inside is large enough to cover all the through holes of the inner sole, and the breathable membrane is temporarily damaged It is difficult for water to penetrate into shoes. In addition, the air-permeable membrane employs a structure in which a coarse woven fabric and a fine woven fabric are laminated, so that the durability is higher than before.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded view of a shoe sole according to one embodiment of the present invention. FIG. 2 is a sectional view of a shoe sole according to the embodiment. FIG. 3 is an enlarged cross-sectional view showing a laminate sheet and an inner material used for a shoe sole according to the embodiment. FIG. 4 is a cross-sectional view showing an example in which the shoe sole of the above embodiment is applied to a shoe made by the Mackay method. [Description of Signs] 1 Sole 2 Upper 3 Inner sole 5 Midsole 7 Outsole 8 Thin leather 9 Laminate sheet 11 Medium thing 13 Shank 15 Insole

Claims (1)

(57) [Claim 1] An outsole 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, wherein the through hole is A membrane carrier laminated on the inner surface of the outsole so as to communicate with the through hole of the outer sole, a water-impermeable permeable membrane laminated on at least one surface of the membrane carrier, and a penetrating from the inner surface to the grounding surface side An inner sole having a through-hole having a flat area capable of covering all of the through-holes of the inner sole, and having a plurality of protrusions protruding toward the grounding surface side. The article is disposed between the membrane carrier and the inner sole without being fixed, and the gas permeable membrane is a gas permeable membrane body.
And a fine-grained woven fabric laminated on one surface of the breathable membrane main body
Or from non-woven fabric and coarse woven fabric laminated on the other side
Adhesive, the coarse woven fabric side is adhered to the membrane carrier.
Sole, characterized by being.