JPS6219205Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to spikes for athletic shoes for soccer, rugby, track and field, baseball, etc.

Conventionally, spikes for sports shoes such as soccer, rugby, track and field, and baseball have been made of metal or synthetic resin.
Although they are lightweight and have excellent shock absorption, they have drawbacks in wear resistance and durability.On the other hand, those made of metal, especially iron, have the disadvantage of being heavy and putting too much strain on the feet. Those made of aluminum alloy are lighter than those made of iron, but they have a drawback in terms of wear resistance.

Therefore, as a result of intensive study in view of these drawbacks of the conventional technology, the inventor of the present invention constructed the tip of the spike with a ceramic member and the bottom of the spike with a synthetic resin member to achieve lightweight, wear-resistant, and shock-absorbing properties. We have now completed a spike for athletic shoes that combines these features.

The spike A is shown in FIGS. 1 to 4, and the mounting bolt 5 is made up of a seat plate 6 at the top and a core rod 7 at the bottom, as shown in FIG. A mesh groove 8 is formed on the lower circumferential surface, and a male screw portion 2 is formed on the lower circumferential surface.

The tip portion 3 is made of ceramic, such as a cylindrical cermet with a slightly rounded upper surface.

The upper surface of the seat plate 6 of the mounting bolt 5 and the lower surface of the ceramic tip 3 are fixed and integrated by brazing or adhesive, and the lower surface of the seat plate 6 and the mesh groove 8 of the core rod 7 A substantially conical base 4 is molded from synthetic resin on the outer peripheral surface of the base 4, and as shown in FIG. It has a structure in which the male threaded portion 2 of the core rod 7 is provided protrudingly from the center of the base 4.

This annular protrusion 9 serves to prevent the spike A from loosening when screwed onto the sole of the shoe, and in conjunction with the large circumferential groove 10 and the small circumferential groove 11, acts like a suction cup to prevent the spike A from loosening when screwed onto the sole of the shoe. This is to make the spike A adhere to the sole of the shoe.

To briefly explain the manufacturing method of this spike A, first, the tip 3 is formed from ceramics such as cermet, and the bottom surface 1 of this tip 3 is brazed to the top surface of the seat plate 6 of the mounting bolt 5 to fix or fix it. The two are bonded together with adhesive and placed in a mold for molding, and a synthetic resin is injected into the mold to form the base 4, and at the same time, the tip 3 and the mounting By integrating the bolt 5 and the base 4,
This is referred to as spike A.

Next, explaining the spike B as another embodiment, as shown in FIGS. 5 and 6, the tip 3 made of ceramic made of cermet or the like has a cylindrical shape with a slightly rounded upper surface, and a slightly rounded upper surface. It has a rectangular shape with a small-diameter, cylindrical protrusion 12 protruding from it.

The mounting bolt 5 integrated with the tip 3 has a seat plate 6 at the top and a core rod 7 at the bottom.The core rod 7 has a knurl 13 on the upper circumference and a knurl 13 on the lower circumference. This is a configuration in which a male threaded portion 2 is formed.

The upper part of the seat plate 6 of the mounting bolt 5 and the bottom surface 1 of the cylindrical projection 12 of the tip 3 are fixed by brazing or adhesive, and the mounting bolt 5 and the ceramic tip 3 are integrated. , this cylindrical protrusion 1
2. Synthetic resin is injected into each peripheral surface of the seat plate 6 and knurling 13 to form a substantially conical base 4, and the annular protrusion 9, large circumferential groove 10, and small circumferential groove 11 are arranged in order from the outer periphery of the lower surface of the base 4. are formed respectively, and a core rod 7 is formed at the center of the lower surface of the base 4.
It has a structure in which a male threaded portion 2 is provided protrudingly.

The manufacturing method of spike B is similar to the manufacturing method of spike A, in which a ceramic tip 3 made of cermet or the like is fixed to a mounting bolt 5 by brazing or adhesive, and the two are integrated. Place it in a mold for molding, inject synthetic resin to mold the base 4, and attach the tip 3 to the mounting bolt 5.
and the base 4 are integrated to form a spike B.

Spike C will be explained as another example. As shown in FIGS. 7 and 8, spike C has the same external shape as spike A, and has a ceramic tip made of cermet or the like. 3
, a substantially conical base 4 made of synthetic resin is formed on the bottom surface, and a male screw portion 2 is provided protruding from the center of the base 4.

The tip portion 3 has a slightly rounded cylindrical upper surface, a neck portion 14 on its bottom surface, and a bulge portion 17 having a smaller diameter than the cylindrical shape on its lower end.
It is in the form of

The mounting bolt 5 has a seat plate 6 formed at the upper end of the core rod 7 of the male threaded portion 2. Further, as the mounting bolt 5, a commercially available bolt having a hexagonal head can also be used.

The tip 3 and the mounting bolt 5 are placed in a mold, a synthetic resin is injected to form a substantially conical base 4, the tip 3 and the mounting bolt 5 are integrated, and the bottom surface of the base 4 is An annular projecting edge 9, a large circumferential groove 10, and a small circumferential groove 11 are formed in this order from the outside, and the mounting bolt 5 is installed so that the male threaded portion 2 protrudes from the bottom surface of the base 4 in the longitudinal axis direction of the base 4. It has a structure in which it is internally fixed.

Spike D will be described as another example. As shown in FIGS. 9 and 10, spike D has the same external shape as spike A, and has a ceramic tip made of cermet or the like. 3
, a base 4 made of synthetic resin is disposed at the bottom, and a male screw portion 2 is provided protruding from the center of the base 4.

The tip 3 has a cylindrical shape with a slightly rounded top surface, and has a substantially semispherical recess 15 in its bottom surface, and a through hole 16 penetrating into the recess 15 from the rounded tip. It has a perforated shape.

The mounting bolt 5 is a core rod 7 having a male threaded portion 2.
A seat plate 6 is formed at the upper end of the seat plate 6. Further, as the mounting bolt 5, a commercially available bolt having a hexagonal head can also be used.

The base 4 is molded from synthetic resin into a substantially conical shape, and the recess 15 of the tip 3 is formed in the upper part of the base 4.
A substantially semicircular spherical convex portion 18 is protruded from the bottom surface, and an annular protrusion 9 with a wide base is protruded from the bottom surface. A groove 10 is formed, and a small circumferential groove 11 is formed inside the groove 10, and the mounting bolt 5 is inserted in the vertical axis direction of the base 4 so that the male threaded portion 2 protrudes from the bottom surface of the base 4.
It is a structure that includes.

This method of manufacturing spike D includes forming a bowl-shaped tip 3 made of ceramic such as cermet,
The tip part 3 and the mounting bolt 5 are placed in a mold, synthetic resin is injected, and the base part 4 is molded.
This is a configuration in which the spike D is formed by integrating the tip portion 3, the mounting bolt 5, and the base portion 4 at the same time.

Note that the through hole 16 may be formed at the top of the bowl-shaped tip 3.

As described above, the spike according to the present invention has excellent wear resistance because the tip part 3 is made of ceramic, and together with the fact that the base part 4 is made of synthetic resin, it is lightweight and has excellent durability. Spikes can be provided economically.

In addition, an annular protrusion 9 and a large circumferential groove 1 are provided on the bottom surface of the base 4.
0, when the spikes are screwed onto the sole of the shoe, the annular protrusion 9 and the large circumferential groove 10 act like a suction cup, allowing the spike to be firmly screwed onto the sole of the shoe. The elasticity of the resin base 4 provides the spike with shock absorbing properties.

Furthermore, like spikes A and B, the ceramic tips 3 are brazed to the mounting bolts 5 or bonded with adhesive and are integrated with the base 4, making the spikes even stronger. .

Ceramic tips 3 like spikes C and D
By interposing a synthetic resin between the mounting bolt 5 and the seat plate 6 of the mounting bolt 5, the impact absorption properties of the spike can be further improved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of spike A, FIG. 2 is a longitudinal cross-sectional view of the spike A, and FIG.
The figure is a front view of the mounting bolt, Figure 4 is a bottom view of Figure 1, Figure 5 is a front view of spike B, Figure 6 is a vertical cross-sectional view of Figure 5, and Figure 7 is a front view of spike C. figure,
Figure 8 is a vertical cross-sectional view of Figure 7, Figure 9 is spike D
FIG. 10 is a longitudinal sectional view of FIG. 9. 2...Male thread part, 3...Tip part, 4...Base part,
5...Mounting bolt, 9...Annular ridge, 11...
Great circumferential groove.

Claims (1)

[Scope of utility model registration request] It is approximately conical in shape, and has an annular ridge 9 along the outer periphery of its bottom surface.
A spike base 4 made of synthetic resin having a large circumferential groove 11 inside thereof is formed, a tip 3 made of ceramic is fixed to the tip of the base 4, and a tip 3 made of ceramic is fixed at the center of the lower surface of the base 4 in the vertical axis direction. A spike for athletic shoes in which a male threaded portion 2 of a mounting bolt 5 is provided protrudingly.