JPH0334083Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an outsole provided below the midsole of a bowling shoe.

(Prior Art) The sole structure of a conventional bowling shoe is shown in FIG. In the figure, 1 is an insole made of natural leather, 2 is an outsole placed under the insole 1, and the outsole 2 and the insole 1 are separated by a synthetic leather upper. The peripheral bent portions 3a of No. 3 are sandwiched and sewn to form the sole. In addition, S
Sewing thread 4 is a decorative member glued to the upper surface periphery of the outsole 2, and 5 is an inner sole glued to the upper surface of the width sole 1.

Conventionally, the above-mentioned outsole 2 is constructed by bonding a rubber heel member 2b to the rear part of the lower surface of an outsole main body 2a made of natural leather, and the outsole main body 2a (natural leather) allows for moderate slippage during pitching. It is becoming possible to obtain

However, according to this conventional outsole structure, the outsole main body 2a is constructed using expensive natural leather over the entire outsole, resulting in high material costs. Moreover, the rear part of the outsole main body 2a is covered by the heel member 2b, and the sliding function of the natural leather is performed only on the toe side half, so there is no need to use expensive natural leather on the entire surface, and the material is The reality was that it was a waste of money. In addition, due to the hardness peculiar to natural leather, the outsole as a whole had poor cushioning properties and was not very comfortable to wear. On the other hand, the upper 3 made of synthetic leather and the outsole main body 2a made of natural leather have poor adhesion due to their materials and are prone to so-called adhesion separation (peeling), so it is important to ensure that they are integrated. The only way to do this is by sewing, and as a result, the heel member 2b had to be adhered to the outsole main body 2a at the final stage of shoe manufacturing. In other words, it is not possible to manufacture the outsole 1 as an independent component in advance and integrate it with the upper 3 and the midsole 1 during the shoe manufacturing stage, which increases the number of steps during shoe manufacturing. However, it has the drawbacks of poor manufacturability and high manufacturing cost.

(Purpose of the invention) Therefore, the present invention not only minimizes the amount of expensive natural leather used and saves material costs, but also allows the entire outsole to be manufactured in advance as an independent component, and is rich in cushioning. This provides a bowling shoes outsole that provides good comfort.

(Structure of the invention) The invention consists of a bottom skin made of natural leather on the toe side half of the lower surface of the outsole body made of sponge rubber such as ethylene-vinyl acetate copolymer, and a rubber heel member on the other half. They are each fixed to each other.

With this configuration, while maintaining the sliding function of natural leather, the amount of natural leather used can be minimized, resulting in low material costs. In addition, because the outsole body is made of sponge rubber such as ethylene-vinyl acetate copolymer, which has good adhesion to synthetic leather, the outsole body and upper leather can be integrated by adhesive. Because of this, it is possible to integrate the outsole body, sole skin, and heel member in advance, and manufacture the entire outsole as a single independent component in the preliminary stage of shoe manufacturing. becomes. moreover,
The elasticity of the sponge rubber provides unprecedented cushioning properties, making it more comfortable to wear.

(Example) An example of the present invention will be described with reference to FIGS. 1 and 2.

The outsole 11 is made of ethylene-vinyl acetate copolymer (hereinafter referred to as EVA according to the common abbreviation), which is a type of sponge rubber, and has a predetermined sole shape and size. A bottom skin 13 made of natural leather is bonded to the toe side half, and a rubber heel member 14 is bonded to the remaining half. The heel member 14 has a thick heel part 14a that forms the original heel, and a connecting part 14b having the same thickness as the sole skin 13 is attached to the front part of the thick heel part 14a.
The heel member 14 and the sole 13 are bonded to the outsole main body 12 with the front end surface of the connecting portion 14b and the rear end surface of the sole 13 abutted against each other. ing.

The EVA sponge rubber that forms the outsole main body 11 is easily mass-produced and is much cheaper as a material than natural leather. For this reason, the outsole main body 12 is formed of EVA sponge rubber, and this outsole main body 12
This outsole 11, which has natural leather (sole skin 13) that performs a sliding function only on the toe side half, maintains the same sliding function as a conventional outsole, but has lower material costs than a conventional outsole. It's cheap. In addition, this EVA sponge rubber has the characteristics of being highly elastic, lightweight, and has excellent impact resistance.
The outsole as a whole is light and durable, and provides cushioning properties not found in conventional outsole.

Furthermore, EVA sponge rubber is made of natural leather,
It has good adhesion to both synthetic leather and rubber, and has the characteristic that so-called adhesion separation, which occurs between natural leather and synthetic leather, is unlikely to occur. For this reason, the outsole main body 12, the sole skin 13, and the heel member 1
4 are definitely integrated, especially the bottom skin 13
However, since it is bonded only to the half of the toe side, there is no possibility that it will easily peel off.

This outsole 11 is manufactured in advance as an independent component having the above-mentioned configuration, and is integrated with the midsole 15 and the upper 16 during shoe manufacturing. That is,
As shown in FIG. 2, the peripheral edge of the outsole main body 12 is adhered to the peripheral bent part 16a of the upper 16, and the peripheral edge of the insole 15 is further adhered to the peripheral bent part 16a, so that these three are integrated. In FIG. 2, thick line A indicates this bonded portion. Further, 17 is the endothelium.

In this case, as mentioned above, since EVA sponge rubber is best bonded to synthetic leather, the outsole main body 12 and the peripheral bent portion 16a of the upper 16 are securely integrated by the above bonding. be done. In other words, since the outsole 11 and the upper 16 are reliably integrated only by adhesion, the outsole main body 2a, the insole 1 and the upper are integrated, as in the conventional outsole 2 shown in FIG. In order to integrate with the bent portion 3a, there is no need to take a sewing method, that is, there is no need to take a step of gluing the heel member 2 to the outsole main body 2a after three-way sewing, and the heel member 14 The entire outsole 11 including the insole 11 is manufactured in advance as one independent part, and the outsole 11 is integrated with the insole 15 and the upper folded part 6a by gluing during the shoe manufacturing stage. It has become possible to take the following. As a result, in the conventional outsole 2, it was necessary at the shoe manufacturing stage.
After sewing the above, attach the main sole body 2a (natural leather) to the inner sole 1.
Also, the process of cutting to a shape and size suitable for the upper 3 and the process of bonding the heel member 2b are no longer necessary. Therefore, the shoe manufacturing efficiency is improved and the manufacturing cost is reduced.

However, in this outsole 11, the integration with the insole 15 and the upper 16 is further strengthened, and the psychological anxiety felt by the user due to the lack of visible seams is eliminated. Honsole 1 in meaning
The peripheral edge of the heel member 14 in No. 1, excluding the heel portion 14a and the slope 14c, may be sewn to the midsole 15 and the upper folded portion 16a after the above-described adhesion.

Note that a shallow recess 1 is formed around the entire circumference of the upper surface of the outsole main body 12, which is bonded to the upper folded portion 16a.
2a is formed, and this recess 1 is formed as shown in FIG.
The bent part 16a and the outsole main body 12 are bonded to each other with the bent part 16a of the upper skin being substantially accommodated in the bent part 2a. As a result, the upper skin folded portion 16a
Since there is almost no difference in level between the sole and the bottom surface of the midsole, and the entire sole of the shoe is formed flat, the shoe is comfortable to wear. In addition, the decorative member 4 glued to the upper surface periphery of the main body 2a of the conventional outsole 2 shown in FIG. In view of the needless increase in shoe manufacturing steps, the decorative member 4 is omitted in this outsole 11.

By the way, the outsole main body 12 and the sole skin 13 may be sewn together instead of being glued together as in the above embodiment.
In addition, as the sponge rubber forming the outsole main body 12, the above-mentioned EVA is most suitable;
Other materials with equivalent properties may also be used.

(Effect of the invention) As described above, according to the invention, the outsole main body is formed of sponge rubber such as EVA, and the bottom skin made of natural leather is formed only on the toe side half of the lower surface of the outsole main body. The heel components are fixed to the remaining half of the shoe, forming the outsole as an independent component, allowing the amount of expensive natural leather used to be kept to a minimum while maintaining the necessary sliding properties. Not only can material costs be reduced, but the number of shoe manufacturing processes can be reduced to improve manufacturability and reduce manufacturing costs. Moreover, the shoe has excellent cushioning properties and provides good comfort.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the outsole of a bowling shoe according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a sectional view showing a conventional sole structure including the outsole. 11... Outsole, 12... Outsole main body, 13... Sole skin, 14... Heel member.

Claims (1)

[Scope of utility model registration request] The sole is made of sponge rubber such as ethylene-vinyl acetate copolymer, and has a bottom skin made of natural leather on the toe side half of the bottom surface of the sole body, and a rubber heel member on the other half. The bottom of Bowling Shoes.