JPS6041132Y2 - baseball shoe spikes - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of spikes for baseball shoes.

Spikes A (Fig. 2) of conventional baseball shoes are made of one ordinary steel plate.
The material was pressed into a letter-shaped shape, and heat treated after the pressing to further increase hardness and enhance wear resistance.

However, when the hardness is increased by quenching the spikes,
Although abrasion-resistant effects can be expected, cracks occur in the bent portions of spikes processed into a hollow shape when used in baseball shoes, causing the so-called hard and brittle phenomenon, and conversely, if quench hardening is suppressed to some extent Some wear and tear was inevitable, and baseball shoes had to be replaced with new cleats two or three times before they became damaged and unusable.

In addition, sports equipment manufacturers believe that wear of the claws of current spikes is unavoidable to some extent, so they sell them with the claws slightly longer when new. is the current situation.

Therefore, although it can be used with the same nail length, users (mainly general athletes and professionals)
From my point of view, it was a very troublesome problem as I had to grind the claws of new spikes and adjust them to the height I liked one by one.

The present invention was devised in view of the above-mentioned inconveniences, and the purpose is to fit the end of the claw part of the spike into the bottom plate of the spike and weld it, thereby solving the problem of the bending part of the conventional spike. The present invention provides a spike that uses a cemented carbide steel plate for the claw portion to significantly improve wear resistance.

Hereinafter, one embodiment of the spike according to the present invention will be explained based on the drawings.
A cemented carbide steel plate made of stainless steel, spring steel, tool steel, etc. is used for this purpose, and the end portion 1a of the claw part 1 is fitted into a bottom plate 2 made of an ordinary steel plate, so that the claw part 1 is erected in a T-shape.

In the spike shown in FIG. 1, the claw part 1 is driven from the back side of the bottom plate 2 with the other end 1b forming the tapered surface as the tip.
is erected in a T-shape.

In this method, the burr 4 that has been removed by driving serves as a reinforcing piece for the claw portion 1.

Another method is to use a bottom plate 12 with holes 3 drilled in advance, as shown in FIG. 3, and to fit the ends 1a of the claws 1 into the holes 3 so that the claws 1 are erected in a T-shape. There is.

A reinforcing piece 6 may be provided around the entire circumference of the hole 3.

By the above method, the end 1a of the claw part 1 which is erected in a T-shape does not protrude from the back surface of the bottom plate, and the end 1a and the bottom plate 2, 12 are connected to each other.
By welding from the back side, it is firmly fixed.

The round holes 5, 5 bored in the bottom plates 2, 12 are
When the shoe sole is embedded in the shoe sole, the synthetic resin forming the shoe sole bites into the round holes 5, 5, increasing the degree of adhesion of the sole plates 2, 12 to the shoe sole.

Conventional spikes tend to crack at the bends, so there is a limit to how hard they can increase, and the Rockwell (C scale) of the spikes is 42° to 50', and the spikes of this invention have a hardness at the claws and bottom plate. By separately fitting the claw end to the bottom plate and welding it, a cemented carbide steel plate can be used for the claw. Therefore, the spike of this invention is made of Rockwell (
C scale) reaches 600, and the wear resistance can be significantly improved, so the life of the spike is longer than the life of the shoe itself, and there is no need to replace the spike, and when manufacturing baseball shoes, the sole plate of the spike can be replaced with the sole of the shoe. It can be buried in

Therefore, there is no need to fix it with screws or the like, and there is no need for a separate attachment part to the sole of the shoe, which leads to a reduction in the weight of the sphere in that field.

In addition, since the bottom plate is buried, there are effects such as no soil clods adhering to it and the bottom plate can be thin.

One of the features of this invention is that the bottom plate can be made thinner.
The thickness is 172 to 1/3 that of iron spikes made by pressing or light alloy spikes made by die casting, and it does not crack like spikes made of light alloy.

Moreover, since the bottom plate can be made thinner, a larger bottom plate area can be obtained with the same amount of iron material required for conventional bottom plate manufacturing.

Since the sole plate is thin and wide, the user of the baseball shoe does not feel the presence of the sole plate, and the baseball shoe is comfortable to wear.

As mentioned above, the baseball shoe spike of the present invention has a novel structure and its practical effects are remarkable.

[Brief explanation of the drawing]

Fig. 1 shows one embodiment of the baseball shoe spike according to the present invention, in which a is a perspective view, b is a front view, Fig. 2 is a perspective view of a conventional example, and Fig. 3 is a sole plate used in the present invention. FIG. 3 is a plan view showing another embodiment of the invention. Code in the figure = 1...Claw part, 2...Bottom plate,
3...hole, 4...paris, 5...
・Round hole, 6... Reinforcement piece, 12... Bottom plate.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. The claw portion 1 of the spike is fitted into the bottom plate of the spike, and the claw portion 1 is inserted from the back surface of the spike in a state where the end portion 1a of the spike portion 1 does not protrude from the back surface of the bottom plate of the spike. Baseball shoe spikes made by welding the bottom plate. 2. The baseball shoe spike according to claim 1, wherein the claw portion 1 is made of a cemented carbide steel plate.