JPH0111046Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an improvement in the sole of baseball spike shoes.

<Prior Art> Today, spike shoes used for sports such as baseball generally have metal spikes attached to the soles of the shoes. This metal spike is the third
As shown in the figure, it consists of a tip a and a base b,
The base b is fixed to the sole body C by a screw d.
A cushion material e or the like is laid on the sole body C. Furthermore, Japanese Patent Laid-Open No. 56-91702 proposes a structure in which the base of the spike claw is embedded in a fixing member, and this fixing member is fitted and fixed to the sole body.

On the other hand, improvements have been made in the material of the spike claw itself, and it has been proposed to use ceramic instead of metal (Japanese Patent Laid-Open No. 59-28902, Utility Model Laid-Open No. 60-1999).
No. 105406).

<Problems to be solved by the invention> These metal spikes are heavy, and the weight of the spike shoes as a whole inevitably increases. On the other hand, the contestants
I want a light spike shoe for agile movements. Also, it is strong against intense play,
Additionally, they want spikes that won't wear out even with repeated use.

However, metal spikes are inherently heavy;
If strength, hardness, and abrasion resistance were to be improved, the weight would be even greater, which would not meet the needs of athletes.

In addition, in the case of metal spikes, screws d are fixed to the sole body C, but the impact from the sole during competition is likely to be transmitted to the athlete's feet through the screw d that penetrates the sole body 3. .

Furthermore, metal spikes had the problem that soil easily adhered to them during competitions, and that it was difficult to remove the adhered soil. This tendency is particularly noticeable on rainy days.

In this respect, these problems can be solved if ceramic spikes are used. However, in the case of ceramic spike claws, it is difficult to adopt the fixed structure of conventional metal spikes.
Conventional structures cannot provide stable fixation.

Furthermore, the fixing structure proposed in Japanese Patent Application Laid-Open No. 56-91702 is still not satisfactory in terms of stability of fixing the spikes and dispersion of impact applied to the spikes.

<Means for Solving the Problems> Therefore, the present invention provides a baseball shoe consisting of a sole body 3, a spike claw 4 made of ceramic, and a fixing member 8 made of synthetic resin, and having the following features. By providing a bottom, the above problems are solved.

This spike claw 4 has a tip 5 extending in the vertical direction.
and a base 6 extending laterally are integrally molded. The base 6 of this spike claw is the fixing member 8
embedded in. This fixing member 8 includes a raised part 8a that includes the base 6 of the spike claw and the boundary between the base 6 and the tip 5 and is gently raised from the periphery to the center, and an extension part that extends from the periphery. 8b. The area of the raised portion 8a and the area of the extended portion 8b are respectively equal to the area of the base 6 of the spike claw.
is assumed to be larger than the area of This fixing member 8
The entire shoe sole body 3 is embedded within the sole body 3, and a portion of the sole body 3 located above the raised portion 8a of the fixing member is a raised portion 1a that rises corresponding to the raised portion 8a of the fixing member. Tip part 5 of the spike claw
The raised part 8a of the fixing member and the raised part 1 of the sole body
It protrudes from the surface of the sole body by penetrating the center of both a and a. The fixing member 8 is made of a highly rigid synthetic resin such as polycarbonate.
The sole body 3 is formed of a urethane resin or the like which has lower rigidity and higher elasticity.

<Function> Firstly, not only the base 6 of the spike claw 4 but also the base of the tip 5 are covered with two layers: the raised part 8a of the fixing member and the raised part 1a of the sole body. be done. Moreover, both of these 8, 1a
is a structure in which the tip 5 of the spike claw protrudes through the center of both.

As a result, the spike claw 4 has two layers of raised portions 8a and 1a that swell from the periphery to the center.
It is strongly supported by That is, since the spike claw 4 is covered with two layers: the raised part 8a of the fixing member that rises gently from the periphery to the center, and the raised part 1a of the sole body, as the tip 5 of the spike claw is inclined, , the tip 5 and both 8
The angles a and 1a approach a right angle, and the force that suppresses the inclination of the tip 5 becomes large.

Moreover, the impact applied to the spike claw 4 is dispersed from the center to the periphery of the two-layered raised portion 8a and the raised portion 1a.

Second, when an impact is applied to the tip 5 in the lateral direction (direction B), the spike claw 4 does not swing around its base 6. This oscillation becomes larger as it approaches the tip. In the present invention, the sole body 3 is made of a urethane resin, etc., which has lower rigidity and higher elasticity than the fixing member 8, in a part closer to the tip.
The base and base are supported by a fixing member 8 made of a highly rigid synthetic resin such as polycarbonate. This makes use of the difference in elastic rigidity between the members 3 and 8 to support the claw 4 in response to vibrations caused by impact.

Thirdly, the distal end portion 5 of the spike claw 4 is horizontally (B
A part of the force applied in this direction acts on the base 6 as a force in the vertical direction (direction A) using the root as a fulcrum. At that time, the roots of this base 6 and tip 5 are as follows:
It is included in a raised part 8a of the fixing member 8, and an extending part 8b extends from the periphery of this raised part 8a.

Moreover, the area of both 8a and 8b is larger than the area of the base 6 of the spike claw 4, and these are embedded and supported in the sole body 3.

As a result, even the force in the vertical direction (direction A) acting with the base 6 of the spike claw as a fulcrum is dispersed to the extended portion 8b having a sufficiently large area and supported by the sole body 3.

<Example> Embodiments of the present invention will be described below based on the figures.

As shown in FIG. 2, the sole of the example has a surface layer 1
A spike claw 4 made of ceramic is made to protrude from a sole body 3 consisting of a sole body 3 and a back layer 2.

As shown in FIG. 1, this spike claw is formed by integrally molding a tip portion 5 extending in the vertical direction (direction A) and a base portion 6 extending in the horizontal direction (direction B). These spike claws are made of ceramic, and the quality of fine ceramic has rapidly improved in recent years (for example, it is 5 times harder than stainless steel,
Products that are twice as strong and 10 times as wear resistant have been developed.
It is used in various fields. ), select and use the appropriate one.

The base 6 of the spike claw 4 is made of synthetic resin such as polycarbonate and is embedded in a fixing member 8 having a larger area than the base 6. This fixing member 8 includes a raised part 8a that includes the base 6 of the spike claw and the boundary between the base 6 and the tip 5 and is gently raised from the periphery to the center, and an extension part that extends from the periphery. 8b. The area of the raised portion 8a and the area of the extended portion 8b are each larger than the area of the base 6 of the spike claw. This embedding method is free, but for example, when molding the fixing member 8 by injection molding, the spike claw 4 may be set in a mold for molding. Thereby, the fixing member 8 in which the base portion 6 of the spike claw 4 is embedded can be obtained. At this time, the base 6 of the spike claw 4
If irregularities and holes 7 are made in the hole 7, the resin of the fixing member 8 will enter into the hole 7, and the fixing member can be fixed even more firmly.

Next, this fixing member 8 is embedded in the sole body 3 made of synthetic resin. This embedding method is also free, but when molding the sole body 3 by injection molding, similar to the above-mentioned embedding of the spike claws 4,
The embedding may be performed simultaneously with the molding of the sole body 3. By this embedding, the base 6 of the spike claw 4
is covered with two layers, the fixing member 8 and the sole body 3, and only the tip 5 of the spike claw 4 protrudes from the surface of the sole body 3. Specifically, the sole body 3 is composed of two layers (three or more layers may be used), a surface layer 1 and a back layer 2, and the fixing member 8 is sandwiched between the surface layer 1 and the back layer 2. Embedded within the sole body. Then, the raised portion 8 of the fixing member on the surface layer 1
A portion located above a is a raised portion 1a that is raised corresponding to the raised portion 8a of the fixing member. The tip 5 of the spike claw mentioned above is located at the raised part 1 of the surface layer.
a and the protrusion 8a of the fixing member, and protrudes from the surface of the sole body. Both the surface layer 1 and the back layer 2 are made of urethane resin,
The surface layer 1 is made relatively softer than the back layer 2 to have flexibility. Although the back layer 2 has a complete shoe sole shape, the surface layer 1 is smaller than the back layer 2 and has cutout portions 1' at appropriate locations. This allows the sole body 3 to have appropriate flexibility and lightness while ensuring the necessary strength. In particular, a large number of parallel cutout parts 1' in the center of the surface layer 1 (arch part) make the sole body 3 easy to bend back and forth, providing a sole that can accommodate changes in the shape of the foot during exercise. It is effective for

This two-layer sole body 3 is manufactured in the following manner. First, the fixing member 8 is set at a predetermined position in a mold for molding the surface layer 1, and the surface layer 1 is molded. Next, this molded surface layer 1 is set at a predetermined position in a mold for molding the back layer 2, and the back layer 2 is molded. As a result, the front and back layers 1 and 2 are integrated,
In addition, the fixing member 8 is sandwiched between both layers 1 and 2.
is embedded. At this time, by providing the fixing member 8 with holes 9 and convex portions 10, the fixing member 8 is reliably fixed within both layers 1 and 2. In addition, contrary to the above, the surface layer 1 may be molded after the back layer 2 is molded.

Cushion material 11 and the like are attached to the sole main body 3 formed as described above, as required, to form a shoe sole for spike shoes.

The above explanation is based on the case where one spike claw 4 is supported by one fixing member 8, such as the spike attached to the upper end of the sole shown in FIG. However, like the spikes attached to the center and lower ends of the sole in FIG. 2, a plurality of spike claws 4... may be supported by one continuous fixing member 8', 8''. By supporting the plurality of spike claws 4 by making the fixing members continuous, the spike claws 4 can be fixed to the sole of the shoe even more firmly.

<Effects of the Invention> Since the sole of the present invention uses ceramic for the spike claws, it can be made lighter than a sole using spikes made of metal such as stainless steel. In addition, by using high-quality ceramic, which is 5 times harder, 2 times stronger, and 10 times more wear resistant than stainless steel, we were able to dramatically increase the strength of the spikes. . Therefore, this invention simultaneously provides the lightness of spike shoes required for agile movements, and the hardness, resistance to bending, and resistance to abrasion of spikes required for intense movements and long-term use. It is something that can satisfy you.

Moreover, since the outer surface of the spike claw is a rough surface unique to ceramic, it has the advantage that soil is difficult to adhere to, and even soil that has adhered to it is easily removed.

Furthermore, the ceramic spike claws 4 of the present invention
is reliably supported by the fixing member 8 and the sole body 3 due to the first to third actions, and there is no fear of it coming off or loosening, and the impact applied thereto is absorbed by the fixing member 8, the front and back sides. 1 and the entire back layer 2, it can soften the impact on the feet.

As described above, the present invention uses a new material called ceramic in a shape and structure that is optimal for exercise, and has been able to provide a spike shoe sole that can meet the complex demands of users.

[Brief explanation of the drawing]

FIG. 2 is a plan view of a shoe sole according to an embodiment of the present invention, and FIG. 1 is a sectional view taken along the line -- in FIG. FIG. 3 is a sectional view showing a conventional spike mounting structure. 1... Surface layer, 2... Back layer, 3... Sole body, 4
...Spike claw, 5...Tip, 6...Base, 8
...Fixed member.

Claims (1)

[Scope of claims for utility model registration] Shoe sole body 3 and ceramic spike claws 4
and a fixing member 8 made of synthetic resin, and a tip portion 5 at which the spike claw 4 extends in the vertical direction.
The base 6 of the spike claw is embedded in a fixing member 8, and the fixing member 8 is connected to the base 6 of the spike claw, and the base 6 and the tip 5 of the spike claw. A raised portion 8 that includes the boundary between the
a and an extended portion 8b extending from its periphery, and the area of the raised portion 8a and the area of the extended portion 8b are each larger than the area of the base 6 of the spike claw, and this fixing The entire member 8 is embedded in the sole body 3, and a portion of the surface layer 1 located above the raised portion 8a of the fixing member is a raised portion 1a that is raised corresponding to the raised portion 8a of the fixed member, and the spike claw The tip portion 5 of the fixing member 8 penetrates through the center of both the raised portion 8a of the fixing member and the raised portion 1a of the surface layer and protrudes from the surface of the sole body, and the fixing member 8 is formed of a synthetic resin with high rigidity such as polycarbonate, and is fixed. The sole body 3 is made of urethane resin, etc., which has lower rigidity and higher elasticity than the member 8.
A sole of a baseball shoe equipped with ceramic spikes, characterized in that the sole is formed of ceramic spikes.