JPH032172Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The invention relates to spikes for baseball shoes.
This is a composite spike made of a spike body integrally formed with a known blade plate and base plate, and a synthetic resin such as nylon or polyacetal, which has been improved for the following purposes.

(1) Improve slip resistance and speed up sprinting and other movements.

(2) Controlling the ground penetration rate of spikes.

(3) Make it easy to determine whether or not spike replacement is necessary.

(4) Reduce head wear of fixing screws.

(5) Visually aesthetically pleasing.

The object of the present invention is to provide the above spikes for baseball shoes.

Conventional technology Conventional spikes for baseball shoes (hereinafter referred to as spikes) include those in which blade plates are provided at the corners of base plates that are connected in a substantially triangular shape in plan, and those in which blade plates are provided in the corners of base plates that are approximately square in plan. In addition to spikes made of a combination of wear-resistant materials such as carbon steel, stainless steel, and cemented carbide, recently spikes made of cermets, ceramics, etc. have also become popular.

These spikes are fixed to the sole of the shoe, and the blade part plunges into the ground due to the user's weight and stepping pressure, preventing slipping and increasing stepping resistance, promoting sprinting and other movements. be.

Problems that the invention aims to solve: In conventional spikes, both the blade plate and the base plate have a smooth surface finish, and when the ground is hard, the part of the blade plate that penetrates is shallow, but when it penetrates deeply, it becomes difficult to pull out, and the resistance to pull out increases. The operation slows down.

On the other hand, when the ground is soft, the blade plate penetrates all the way to the base, but the ground resistance is weak, so the blade plate slides underground, hindering quick operation.

Also, if the head of the screw or rivet that secures the spike to the sole of the shoe protrudes from the base plate, it will repeatedly contact the other surface and cause horizontal friction, and the head of the screw will wear to the point where the driver groove disappears, causing the spike to become stuck. There was a problem that made it difficult to remove the screws when replacing them.

Means for Solving the Problems The present invention improves the above-mentioned drawbacks (1) to (5).
The purpose of this invention is achieved, and the means thereof will be described in detail below with reference to the drawings.

A composite spike body A consisting of a blade plate 1 and a base plate 2 with screw holes 3, which are known per se, is made of a material such as metal or ceramics, and the body A is covered with an outer layer B of a synthetic resin such as nylon or polyacetal. It is a spike, and the synthetic resin outer layer B covers the entire surface of the base plate 2 from the approximate center of the blade plate 1, but the tip of the approximate center of the blade plate 1 has an acute angle B' both inside and outside the blade plate 1,
The base plate 2 is provided with a plurality of protrusions 4 on the ground surface side, and the corresponding sole surface side is a spike having a flat surface 5 with screw holes corresponding to the screw holes 3 of the main body A. The synthetic resin outer layer B may be made of any resin other than those mentioned above as long as it is highly wear resistant. It is also optional to incorporate fibers into the synthetic resin outer layer B to make it a reinforced plastic.

The protrusion 4 is not limited to the illustrated truncated cone shape but may have any shape, but its height is lower than the blade plate 1 and higher than the head of the fixing device (screw) to the sole of the shoe.

The means for fixing the spike of the present invention to the sole of a baseball shoe is to embed a nut 8 in advance in the spike attachment part of the sole 7 as shown in FIG. 2 and screw the spike with a screw 9 as in the conventional method. Although not shown in the drawings, there is a method of caulking the spikes to the sole of the shoe using screws, rivets, etc., without embedding nuts in the sole.

Effects of the invention The spike of the invention is a composite spike in which a spike body A, which is known per se, is integrally coated with a synthetic resin outer layer B. The synthetic resin outer layer B is the main body A.
The entire surface of the base plate 2 is covered from the approximate center of the blade plate 1, and the tip of the approximate center of the blade plate 1 has an acute angle both inside and outside of the blade plate 1.
Since it is formed at B', there is no problem in the blade plate 1 thrusting into the other surface, and on soft ground,
Together with the plurality of protrusions 4 provided on the ground surface side of the base plate 2, this serves to control the blade plate 1 from plunging deeply into the ground, and at the same time, the pulling resistance force is reduced. Further, the protrusion 4 cooperates with the blade plate 1 to enhance the anti-slip effect, allowing running and other movements to be performed smoothly and quickly. Furthermore, since the height of the protrusion 4 is higher than the head position of the screw 9, the screw head is covered by the protrusion 4 and even if it touches the ground, the friction rate in the horizontal direction is reduced. Wear and tear on the parts is significantly reduced. Furthermore, it is preferable to replace the spikes when the blade plate 1 is worn down to the vicinity of the acute angle B' at the tip of the synthetic resin outer layer B of the blade plate 1 due to repeated use, so that it is possible to determine when it is necessary to replace the spikes. Another advantage is that when it is formed from the main body A and the different colored synthetic resin outer layer B,
There is an incidental effect that presents a visually beautiful appearance.

Although other embodiments have been omitted, the present invention can also be applied to spikes in which blade plates are provided at the corners of base plates that are connected in a generally triangular planar shape.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view, FIG. 2 is a plan view, and FIG. 3 is a sectional view of the device screwed onto the sole of a shoe. A...Spike body, B...Synthetic resin outer layer,
B'...acute angle, 1...blade plate, 2...base plate, 3...
Screw hole, 4...Protrusion, 5...Flat surface, 7...Sole,
8...Natsuto, 9...Bis.

Claims (1)

[Scope of utility model registration request] A spike for baseball shoes, which is known per se and consists of a blade plate and a base plate provided with fixing holes, is a composite spike in which a synthetic resin outer layer covers the entire surface of the base plate from the approximate center of the blade plate, and the synthetic resin outer layer is It extends to approximately the center of the blade plate and its tip is formed at an acute angle, and the base plate has a plurality of arbitrarily shaped protrusions that are lower than the blade plate and higher than the head of the fixing device to the sole of the shoe. Spikes for baseball shoes that are integrated.