JPH09140404A - Shoe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the adhesion of a moisture permeable member and a midsole while hardly increasing the weight of the midsole from conventional one. SOLUTION: For this shoe, after hanging an upper 7 to an insole 2 provided with air permeability, the midsole 3 provided with a hollow part 3a near the center of a stamping part is formed by a vulcanizing method or an injection molding method, then a filling material 5 is loaded in the hollow part 3a and thereafter, an outsole 6 provided with the air permeability is provided. In this case, as the midsole 3, the one provided with a flange part 3b projected inward on the non-grounded surface side of the inner peripheral edge of the hollow part is used. Also, A non-water-permeable moisture permeable member 4 is disposed between the midsole 3 including the flange part 3b and the insole 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe having an insole formed by a vulcanizing method or an injection molding method.

[0002]

2. Description of the Related Art Although the vulcanized manufacturing method and the injection molding method require a mold and the equipment cost is high, the bottoming work is easier than the Goodyear and other manufacturing methods, and the cemented method is also used. Since the outsole has a higher adhesive strength than the shoes manufactured by, the method is popular as a simple and robust method that surpasses the cemented type. In addition, the shoe manufactured by this method has an advantage that it is also excellent in waterproofness due to the firm adhesion between the outsole and the upper.

Further, in order to reduce the weight, not the whole of the front bottom is molded by the vulcanize method or the injection molding method, but only the inner bottom is molded by the vulcanize method or the injection molding method. A manufacturing method is also used in which a front bottom formed of a lightweight material such as foamed synthetic rubber is attached. In this case, in order to further reduce the weight without impairing the waterproof property, it is performed by hollowing out the vicinity of the center of the stepping part which is in close contact with the lower part of the upper part except the peripheral part. Also, according to this method, compared with the case where the bottom is molded only by the vulcanize method or the injection molding method, the thickness of the filling bottom is thinner, so that there is an advantage that the vulcanization or solidification time of the material can be shortened. doing.

[0004]

By the way, in recent years, in order to prevent stuffiness inside shoes, a through hole penetrating in the thickness direction is provided in the vicinity of the center of the stepping part of the outsole, and a breathable insole is provided. In addition, a shoe sole in which a water-impermeable and moisture-permeable member is disposed between the outer sole and the inner sole is known. According to this shoe sole, heat and moisture in the shoe can be efficiently released to the outside, and at the same time, it is possible to prevent water and foreign matter from entering from the outside.

However, when the stuffiness preventing structure having such a water-impermeable and moisture-permeable member is applied to a shoe having an insole formed by the above-mentioned vulcanizing method or injection molding method, the following problems occur. .

That is, since the hollow portion is formed near the center of the stepping portion of the inner bottom, it is necessary to dispose a water-impermeable, moisture-permeable member between the inner bottom and the inner bottom. However, if the inner bottom and the moisture-permeable member do not overlap to some extent, the adhesiveness cannot be obtained, and there is a risk of easy peeling.
For this reason, it is necessary to use a material having an area larger than the size of the cut-out portion, and it is preferable that the area of the moisture-permeable member is large in terms of adhesion to the inner bottom. However, if it is too big, it will overlap with the suspended upper. When the size is such that the upper and the moisture permeable member overlap, the moisture permeable member is pushed inward from the peripheral edge during squeezing, causing wrinkles, and the function of the moisture permeable member may not be fully exerted. is there. On the other hand, in order to increase the adhesion between the inner bottom and the moisture-permeable member, conversely, it may be possible to reduce the size of the hollowed-out portion of the inner bottom. However, there is a problem that the smaller the size of the hollow portion, the heavier the weight of the inner bottom.

The present invention has been made in order to solve the above-mentioned problems, and there is provided a shoe having a centering sole having a hollow portion near the center of the stepping portion, such that the weight of the centering sole is hardly increased. An object of the present invention is to provide a shoe which does not impair the inherent properties and has excellent adhesion between the moisture permeable member and the inner sole.

[0008]

In order to achieve the above object, the shoe of the present invention is such that after the upper is suspended on a breathable insole, a hollow portion is formed in the vicinity of the center of the stepping portion by a vulcanize type or injection molding method. In a shoe produced by forming an insole having an inner sole, and then loading a hollow material into the hollow portion, and thereafter providing a breathable outer sole,
The centering bottom has a flange part that projects inward on the non-grounding surface side of the inner peripheral edge of the hollow part, and a water-impermeable transparent material between the centering bottom including this flange part and the middle bottom. A wet member is provided.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the figure, reference numeral 1 denotes a shoe of this embodiment, which includes an insole 2, an insole 3, an impermeable moisture-permeable member 4,
It is configured to have a midsole 5, a front bottom 6, an upper 7, and the like.

The insole 2 is made of rubber or synthetic resin, and has a plurality of through holes 2a penetrating in the thickness direction at substantially the center of the stepping portion. The size (hole diameter) and number of the through holes 2a can be appropriately changed according to the application of shoes such as for business use and sports use. For example, in the case of sports use, the hole diameter can be relatively large, Breathability can be enhanced by providing a larger number. The insole 2 does not necessarily have to have such a through hole 2a as long as it has air permeability.

The inner bottom 3 is formed by a vulcanizing method or an injection molding method using a predetermined mold. That is,
In the case of the vulcanized manufacturing method, put unvulcanized rubber pieces between the left and right side molds and the bottom mold and attach while heating and pressing to vulcanize.In the case of the injection molding method, the liquid raw material is Inject between molds and attach.

A hollow portion 3a is formed near the center of the stepping portion of the inner bottom 3 of the hollow. This hollow portion 3a is provided to reduce the weight, but in the present embodiment, a flange portion 3b that projects inward is formed on the non-grounded surface side of the inner peripheral edge of the hollow portion 3a of the insert bottom 3. Has been done. The flange portion 3b is provided for disposing a water-impermeable, moisture-permeable member 4 which will be described later, and is preferably formed as thin as possible so that the weight of the inner bottom 3 does not increase significantly.

In forming the inner bottom 3 as in this embodiment, in either case of the vulcanizing method or the injection molding method, the hollow portion 3a is formed. A ridge having a shape corresponding to the shape of the hollowed-out portion 3a is formed on the upper surface portion near the center. More specifically, as the raised portion,
Only the peripheral edge of the upper surface is slightly lowered. The flange portion 3b is formed by having a height difference between the peripheral portion and the other portion.

The water-impermeable, moisture-permeable member 4 has a larger area than the hollowed-out portion 3a of the inner bottom 3 and covers the entire through-hole 2a formed in the inner-bottom 2 and the through-hole 6a formed in the front bottom 6 described later. It has a shape that allows it. The moisture permeable member 4 is
A sheet 42 (for example, polyester woven fabric or nonwoven fabric) having a fine mesh is sandwiched between the water-impermeable and moisture-permeable membranes 41, and
It has a three-layer structure in which a coarse sheet 43 (for example, a product name “Tricot” manufactured by Asahi Kasei Apico Co., Ltd.) is arranged on the other surface. As the water-impermeable moisture-permeable film 41, any film may be used as long as it allows only water vapor or only water vapor and air to pass without passing water, for example, a product name manufactured by Nitto Denko Corporation. "Microtex" can be used. In addition, the material forming each of these layers is fixed by applying an adhesive only to the peripheral portion.

The midsole 5 is disposed in the hollow portion 3a formed in the inner bottom 3 and may be any conventionally known air-permeable material such as sponge or cork. Etc. can be used.

Like the insole 2, the front bottom 6 has a plurality of through holes 6a near the center of the stepped portion. This through hole 6a
1 means that the convex portion of the tread pattern formed on the ground contact surface side of the outsole 6 directly supports the load during walking.
As shown in FIG. 5, by providing the recess 6b, it is possible to reduce the risk that foreign matter such as pebbles will be clogged. Since the through hole 6a is provided to ensure air permeability, like the insole 2, if the material itself forming the outsole 6 has air permeability, The through hole may not be separately provided.

Next, a method for manufacturing the above shoe will be described. First, the insole 2 having the ventilation holes 2a is temporarily fixed to the last (not shown), and the upper 7 is suspended. Up to this suspending operation, the procedure is exactly the same as the conventional Vulcanize manufacturing method or injection molding method except that the one having the vent hole 2a is used as the insole 2. The upper 7 may be either the upper only, or the upper 7 having a back 72 in addition to the upper 71 depending on the use of the shoe.

Next, on the ground contact surface side of the insole 2, the water-impermeable, moisture-permeable member 4 is formed so as to close all the ventilation holes 2a.
Cover with. The water-impermeable and moisture-permeable member 4 is formed in advance in such a size that it does not overlap the suspended portion 7a of the upper 7. The water-impermeable, moisture-permeable member 4 is oriented so that the sheet 42 having a fine mesh is in contact with the ground contact surface of the insole 2, and its peripheral portion is temporarily fixed to the insole 2 with an adhesive or the like.

Next, the metal foot mold used in the Vulcanize manufacturing method or the injection molding method is inserted into the upper 7, and the inner bottom 3 is formed by using the mold as described above. Since the inner bottom 3 has the flange 3b formed therein, the inclusion of the flange 3b results in an adhesive area between the water-impermeable moisture-permeable member 4 and the inner bottom 3 forming the flange 3b. It can be quite large compared to the case without it. Moreover, the water-impermeable, moisture-permeable member 4 has a coarser sheet 43 than the inner bottom 3 is.
Are formed so as to be bonded to each other, the material for forming the inner bottom 3 enters the gap of the coarse sheet 43 during the molding and directly bonds to the water impermeable moisture permeable film 41.
If the water-impermeable moisture-permeable membrane 41 and the inner bottom 3 are not directly joined, there is a risk that water or the like will penetrate through the coarse sheet 43, but according to the present embodiment, that There is no fear.

Next, the inner material 5 is loaded into the hollow portion 3a formed on the inner bottom 3 and the front bottom 6 is attached. The front bottom 6 may be attached by a cemented method in which an adhesive is applied to the ground contact surface of the inner bottom 3 to press and close it, or a method of sewing to the inner bottom 3 may be adopted. .

According to the shoe manufactured by the above-mentioned method, when the user walks, he / she lands on or moves away from the ground, so that the through hole 3a formed in the insole 3 and the non-water-permeable moisture-permeable member 4, Through the through holes 6a in the outsole 6, sweat converted into water vapor is released in the shoe. Also, the heat in the shoes is released. On the other hand, since the water-impermeable and moisture-permeable member 4 has the water-impermeable and moisture-permeable film 41 as its constituent element, water and dust from the through holes 6a provided in the outsole 6 may enter the shoe. Is prevented.

[0022]

According to the shoe of the present invention, since the water-impermeable, water-impermeable member is disposed in close contact with the inner bottom, the air permeability is good, while the outsole side is the ground contact surface side. It is possible to prevent water and dust from entering. Moreover, it does not impair the inherent properties of a shoe having an inner sole having a hollow portion near the center of the stepping portion, such as being lightweight.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a shoe of the present invention.

FIG. 2 is a vertical sectional view of the embodiment.

[Explanation of symbols]

 1 shoe 2 insole 3 insole 4 impermeable and moisture permeable member 41 impermeable and moisture permeable membrane 42 fine mesh sheet 43 coarse mesh sheet 5 medium material 6 outer sole 7 upper

Claims (3)

[Claims] 1. After suspending an upper in a breathable insole, an insole having a hollow portion near the center of the stepping portion is formed by a vulcanizing method or an injection molding method, and then, in the hollow portion. In a shoe manufactured by loading the inside and then providing a breathable outsole, the insole has a flange portion projecting inward on the non-grounding surface side of the inner peripheral edge of the hollow portion. In addition, a non-water permeable and moisture permeable member is disposed between the insole and the insole including the flange portion. 2. The water-impermeable, moisture-permeable member comprises a water-impermeable, moisture-permeable film, a fine sheet laminated on one surface of the moisture-permeable film, and a coarse sheet laminated on the other surface. The shoe according to claim 1, comprising: 3. The shoe according to claim 2, wherein the water-impermeable and moisture-permeable member is arranged such that the side of the sheet having coarse mesh is in close contact with the inner bottom.