JPH0737521Y2 - Sole structure of athletics shoes - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole structure of athletics shoes used especially for short-distance competition.

[0002]

2. Description of the Related Art The applicant has applied for Japanese Patent Application No. 3-60656 (Japanese Utility Model Publication No. 5-4903) as a device prior to the present invention. This device uses a relatively hard synthetic resin,
From the front part of the arch of the shoe sole to the heel part,
It has a three-dimensional shape in which the periphery of the sole is rolled up so as to wrap around the back of the foot, and the upper edge of the winding is near the ridgeline where the width of the foot is the maximum when the shoe is worn and the heel is seen from behind under the heel. It is a shoe sole that passes through. In the shoe sole of the invention, since the periphery of the heel portion of the rear part of the foot has a three-dimensional shape, the sole firmly wraps and supports the heel portion. Therefore, the heel counter is no longer needed. Furthermore, since the periphery of the heel portion has a three-dimensional shape, it is not bent, and the vicinity of the stepped portion is easily bent, so that a shank effect can be obtained without using a separate shank.

As described above, Japanese Utility Model Application No. 3-60656
(Japanese Utility Model Laid-Open No. 5-4903) The invention has excellent features, but when making such a shoe sole by injection molding, it is necessary to prepare a mold for each size, which is a drawback that the manufacturing cost becomes high. was there. As described in Japanese Patent Application No. 3-60656 (Japanese Utility Model Laid-Open No. 5-4903), if the shoe sole is divided into a front sole and a rear sole, some size adjustment is possible. Since it corresponds to a bent portion, there is a risk that the overlap between the front bottom portion and the rear bottom portion will hinder the bending, and there is also a risk that the overlapping portion between the front bottom portion and the rear bottom portion will separate during repeated use.

[0006]

Therefore, the present invention does not require a separate shank of the Japanese Patent Application No. 3-60656 (Japanese Utility Model Laid-Open No. 5-4903) and is lightweight. While maintaining the features of, and, if possible, the feature of wrapping and supporting the heel part, without making a mold for each size and making an outsole, 1
It is intended to provide a shoe sole having the above characteristics at low cost by making two outsoles so that shoes of several sizes can be manufactured.

As described above, the invention of Japanese Patent Application No. 3-60656 has excellent characteristics. However, when such shoe soles are manufactured by injection molding, it is necessary to prepare a mold for each size, There was a drawback that the cost was high. As described in Japanese Patent Application No. 3-60656, it is possible to adjust the size to some extent if the shoe sole is divided into a front sole and a rear sole, but since this divided portion corresponds exactly to the bent portion,
Overlapping of the front bottom part and the rear bottom part may prevent bending,
Further, there is a fear that the overlapping portion of the front bottom portion and the rear bottom portion may be peeled off during repeated use.

In order to solve the above problems, the applicant has paid attention to the following points of athletic shoes used for short-distance competition. First of all, athletics shoes used for short-distance competition usually have spikes attached only to the front sole of the shoe. This is because in normal running, the weight shifts from the heel of the foot to the tip of the foot, so spikes for non-slip are required on the entire sole, whereas in short-distance competition, the foot is stepped on. First of all, the weight is transferred from the front of the part to the toes, so the spikes for preventing slippage are only required on the front sole of the shoe. From this, it was found that the rear sole of the athletic shoes used for short-distance competition does not need a function of non-slip.

Secondly, in athletics shoes, it is known to interpose one or more midsole between the upper and the outsole. This midsole is the same as the outsole. It is common to be cut to size, and at most only cut smaller than the outsole. This made me wonder if this midsole could be used better.

[0006]

Therefore, the present invention maintains the characteristics of the sole that the separate shank of the invention of Japanese Patent Application No. 3-60656 is not necessary and is lightweight, and preferably the heel part. While maintaining the feature of wrapping and supporting, even if you do not have to make a mold for each size and make an outsole, you can make shoes of several sizes by making one outsole, It is intended to provide a shoe sole having the above characteristics at low cost.

[0007]

[Means for Solving the Problems] Therefore, the present invention has
In an athletic shoe consisting of a midsole and an outsole, the outsole has a rolled-up shape from the stepping part to the rear of the arch part, and the rear part of the heel part has a cut shape and is integrally molded with the front bottom part, and the cut The shoe sole structure of the athletic shoe in which the midsole is placed and fixed on the outsole so that the midsole protrudes from the rear of the heel portion of the outsole. The midsole may have a flat shape in which the periphery of the heel portion is not rolled up, or the periphery of the heel portion may be formed in a rolled-up shape.

[0008]

In order to manufacture a shoe using the sole of the present invention, the midsole is placed and fixed on the rear of the heel of the cut outsole, and the upper is further adhered. Therefore, when you want to manufacture a shoe that is larger than the standard size shoe, shift the midsole that is fixedly attached to the rear of the heel of the outsole to slightly rearward to increase the overall length of the outsole. Just glue the skin. Conversely, if you want to manufacture a shoe with a size smaller than the standard size, shift the midsole that is placed and fixed to the rear of the heel of the outsole slightly forward, or cut the rear of the heel of the outsole and then use the midsole. If it is placed and fixed, the total length of the outsole will be shortened, so a small size shoe can be made by adhering a small size upper to it.

In this way, by adjusting the position of the midsole that is placed and fixed on the outsole or by cutting the rear part of the heel of the outsole itself, it is possible to manufacture shoes of several sizes from one outsole. It has become possible. Therefore,
It is not necessary to manufacture outsole dies for each size, for example, one outsole may be produced for every 3 or 4 sizes, so the number of dies can be small and the cost is low. Can provide shoes.

As described in the prior art, in the outsole of athletic shoes for short-distance competition, since the rear sole portion hardly lands during running, no anti-skid function is required. Therefore, even if the midsole is protruding from the rear of the heel of the outsole, or if the midsole is moved back and forth or the rear of the heel of the outsole is cut, there is no problem in running. It is a thing. In addition, unlike the case where the outsole is divided into a front bottom part and a rear bottom part to be manufactured and adjusted in size, flexibility is not hindered, and the overlapping part of the front bottom part and the rear bottom part is peeled off. Also disappears.

Furthermore, since the outsole has a rolled-up shape from the stepped portion to the rear of the arch, the three-dimensional rolled-up shape of this portion exerts a shank effect and is difficult to bend. In addition, the front bottom part is made thick to attach the spikes that are naturally necessary for athletics shoes for short-distance competition, and it is also difficult to bend. Therefore, in the outsole following the front bottom part, the stepping part, and the arch part, the stepping part that needs to be bent is most easily bent without using a separate shank. Moreover, the bending position and the degree of bending can be adjusted by increasing or decreasing the winding height from the trampling part to the rear of the arch, or by increasing or decreasing the slope leading to the winding. Is also possible. Furthermore, this winding promotes a sense of unity between the sole of the shoe and the sole of the foot, and also has the effect of preventing sideways movement of the foot.

The midsole, which is placed and fixed on the rear side of the heel of the outsole, may have a flat shape in which the peripheral edge of the heel is not rolled up if it is used for pure size adjustment. In addition to the size adjustment, if the function of wrapping and supporting the heel portion is added, the periphery of the heel portion can be formed in a rolled-up shape. In the former case, a heel counter is needed to support the heel. In addition, the weight of the entire shoe will be heavier than that of Jpn. Pat. Appln. No. 3-60656 because the outsole and the midsole overlap each other. it can.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of a shoe in which the present invention is applied to a right foot, and an outsole 4 has a shape 41 which is rolled up from the stepping part 5 to the rear of the arch part 6. As shown in FIG. 2, the rear part 42 of the heel of the outsole 4 has a cut shape 4
3 is set. Then, the heel rear 42 of the outsole 4
As shown in FIG. 3, the midsole 3 is mounted and fixed on the upper side so as to protrude from the outsole 4. The fact that the midsole 3 protrudes from the outsole 4 can be seen from FIG. 4 which shows the shoe of the present invention as seen from the sole side. The outsole 4 is formed integrally with the front bottom 45, and like the normal athletics shoe, the front bottom 4 of the outsole 4 is formed.
5, a spike 46 is provided, and a projection 44 is provided on the rear side of the arch portion 6.

In the embodiment, as shown in FIG. 3, the midsole 3 is used.
The circumference of the heel portion is rolled up 31. Of course, the peripheral edge of the heel portion may not be rolled up 31 and may have a flat shape. It should be noted that raising or lowering the height of the hoist 41 or tightening or loosening the slope from the stepping part 5 to the arch part 6 is optional and is limited to the present embodiment. Not a thing. Further, it is also optional to change the height and inclination of the winding 41 between the inside and outside of the foot, and it is possible to adjust the bending position and the bending degree by this change.

[0015]

[Effects of the Invention] By using the shoe sole of the present invention, the position of the midsole 3 fixedly mounted on the outsole 4 can be shifted forward or backward, or the rear part 42 of the heel part of the outsole 4 itself can be cut to obtain a standard size. Since a larger or slightly smaller outsole can be used, one outsole can be utilized for shoes of several sizes. Therefore, it is not necessary to manufacture the mold of the outsole 4 for each size (0.5 cm), for example, one for every 3 sizes or 4 sizes.
Since only one outsole needs to be manufactured, the number of molds can be small, and shoes can be provided at a low cost. Further, unlike the case where the outsole is divided into a front bottom portion and a rear bottom portion to be manufactured and the size is adjusted, flexibility is not hindered and the overlapping portion between the front bottom portion and the rear bottom portion is not peeled off.

The outsole 4 has a three-dimensional winding 41 shape from the stepping part 5 to the rear of the arch part 6 to exert a shank effect, and the stepping part 5 is most easily bent without using a separate shank. . In addition, it is possible to adjust the bending position and the degree of bending by increasing or decreasing the height of the winding 41, or by increasing or decreasing the inclination of the winding 41. Further, the weight of the entire shoe is slightly heavy due to the overlap between the outsole and the midsole, but at this level, the weight does not increase so much, and a shoe that can be said to be sufficiently lightweight can be provided. Therefore, the characteristics of Japanese Patent Application No. 3-60656, which do not require a separate shank and are lightweight, can be maintained as they are.
Furthermore, if the circumference of the heel of the midsole 3 is rolled up into a shape of 31, the effect of wrapping and supporting the heel can be maintained.

[Brief description of drawings]

FIG. 1 is a side view of an athletics shoe embodying the present invention.

FIG. 2 is a perspective view of a heel rear portion of the outsole.

FIG. 3 is a perspective view of a rear part of the heel in which a midsole is placed and fixed on an outsole.

FIG. 4 is a bottom view of the rear part of the heel of the athletics shoe embodying the present invention as seen from the sole.

[Explanation of sign]

 1 shoe 2 upper 3 midsole 31 hoisting 4 outsole 41 hoisting 42 heel rear 43 cut shape 44 protrusion 45 front bottom 46 spike 5 tread 6 foot arch

Claims (2)

[Scope of utility model registration request] 1. An athletic shoe comprising an upper, a midsole, and an outsole, wherein the outsole has a rolled-up shape from the stepped part to the rear of the arch, and the rear part of the heel has a cut front part. A shoe sole structure for an athletics shoe, which is integrally molded with the cut outsole, and in which the midsole is placed and fixed on the outsole so that the midsole protrudes from the rear of the heel portion of the cut outsole. 2. The shoe sole structure for athletic shoes according to claim 1, wherein the periphery of the heel portion of the midsole is formed in a rolled-up shape.