JPH0755926Y2 - Spikes for baseball shoes - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of spikes to be attached to baseball shoe soles.
It is a spike to be attached to the front stepping part on the ground contact side of the shoe sole, especially when the shoe shifts in multiple directions and deforms immediately before the impact that maximizes the load on the shoe sole during batting. An object of the present invention is to provide a spike for a baseball shoe, which prevents the foam from breaking down and maximizes the anti-slip action of the spike, thereby effectively exerting the anti-slip action in any movement motion such as batting, throwing and running. Is.

Conventionally, a spike for a baseball shoe to be mounted on a front stepped portion of a shoe sole has three projections on the toe side and rear left and right projections connected by a connecting plate as shown in FIG. One that is supported by points, or one that is supported by three points without the above-mentioned three projecting pieces being connected by a connecting plate.
No. 6 publication) or three-point supported by a protrusion on the toe side that is not connected by a connecting plate and rear left and right protrusions that are connected by a connecting plate (for example, the actual open year 52) 1322
The invention disclosed in Japanese Patent No. 23) is publicly known, and in each case, a projection having a substantially trapezoidal shape is integrally projected at a position connecting a line of an isosceles triangle with the toe side of the shoe sole as an apex. Target. Of the related projections, the projections on the toe side are usually formed in the driving direction from the landing of the running to the kick, that is, in the direction orthogonal to the front-back direction of the shoe sole and the direction intersecting with each other to maximize the anti-slip effect. It is formed so that it can.

On the other hand, the two rear left and right protrusions are arranged below the metatarsal bones 8 of the foot of the shoe wearer. In addition, the shoe soles are projected in a direction substantially orthogonal to the left-right direction, so that when a runner on the first run starts a stolen base or makes a dash, maximum slip resistance is exerted in the propulsion direction. In other words, the runner who runs to the base serves for stealing, takes a parallel posture over the opponent's pitcher's back, and at the same time as the start and the dash, the body rotates 90 degrees and goes straight in the direction of travel.

Therefore, the angles of the two rear spike protrusions are set so as to be substantially orthogonal to the left and right direction of the shoe sole in order to effectively exert an anti-slip force at the time of starting and dashing. By the way, according to the experimental results of the inventors,
In the striking motion, the load of the batter's weight is the largest and is applied to the sole just before the impact, and immediately before the impact, the horizontal ground reaction force applied to the batter's foot is substantially equal to that of the metatarsal bone 8 of the foot. It has been found to act slightly forward, that is, in the direction of the middle phalanx 9 of the first toe of the foot, starting from the center. Therefore, as described above, a conventional product in which two rear projections are arranged and formed along the metatarsal bones of the foot in parallel, and the projections are projected in the direction orthogonal to the left-right direction of the shoe sole. Then, immediately before the impact, since the protruding piece is not formed in the vicinity of the direction of the middle phalanx 9 of the first finger of the foot on which the greatest horizontal ground reaction force of the batter acts, the anti-slip force of the spike does not work sufficiently. In some cases, the sole shifts in the front, rear, left, and right directions when hitting, which can be one of the factors that disrupt the batting form. Further, among the above-mentioned known side, in particular, the device according to Japanese Utility Model Laid-Open No. 52-132223 has two pin-shaped spikes attached to the intermediate side between the tongue side protrusion and the rear left and right side protrusions. Although it is detachably attached, such conventional products also have a pin-like mid-side spike, so the anti-slip action at the start and dash in a baseball game cannot be fully utilized. Since the spike itself is formed independently, the strength of attachment is weak, and there is a problem in durability, etc., which is not sufficiently satisfactory.

[0005]

SUMMARY OF THE INVENTION Therefore, the present invention provides a spike for a baseball shoe which maximizes the anti-slip force of the spike and can effectively exert the anti-slip action in any movement motion such as batting, throwing and running. It is the one we are trying to provide.

[0006]

In order to solve the above problems, the inventor of the present invention has conducted extensive research and as a result, has provided a device having the following configuration. That is, the present invention is directed to a toe projecting piece and two left and right projecting pieces projecting rearward of the toe projecting piece.
Also, in a baseball spike having a connecting seat plate for connecting each of these projecting pieces, an auxiliary projecting piece is integrally formed with the connecting seating plate 3 on an intermediate side between the toe projecting piece and the two rear left and right projecting pieces. The project was adopted as a new technical means.

[0007]

According to the present invention, like the conventional spike for a baseball shoe, the spike tip toe supporting the front stepped portion of the shoe sole at three points and the two rear left and right protrusions are substantially omitted. At the time of batting, the auxiliary projecting piece is integrally formed with the connecting seat plate at the middle part, that is, immediately below the impact in batting, at a portion directly below the middle phalanx of the first finger of the foot where the horizontal ground reaction force acts. It is possible to achieve a bat swing with stable batting foam that suppresses slippage, prevents slippage and deformation of the sole.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a spike for baseball shoes of the present invention, FIG. 2 is a bottom view thereof, and FIG. 3 is a side view thereof. As shown in FIG. 1, the spike for baseball shoes of the present invention includes a toe projection 1, two left and right projections 2 and 2 protruding behind the toe projection 1, and the projections 1 and 2 respectively. Has a connecting seat plate 3 for connecting the toe projecting piece 1 and auxiliary projecting pieces 4, 4 on the intermediate side between the toe projecting piece 1 and the two left and right projecting pieces 2, 2 integrally formed with the connecting seat plate 3. The main configuration is to be provided in. At this time, the connecting seat plate 3 is provided with a connecting hole 5 at an appropriate position for connecting the spike body to the shoe sole.
In addition, there is a space 6 surrounded by the connecting seat plate 3 in the center of the spike body. At this time, the auxiliary projecting pieces 4 and 4 are integrally projected with the connecting seat plate 3 of the spike body, and the projecting piece 1
Installation angle θ of 0 to 45 degrees with respect to the horizontal line P parallel to
It is formed so as to incline inward so as to be. The attachment angle θ is determined from the direction and magnitude acting point of the ground reaction force during the striking motion measured by the inventor in the experiment. That is, FIG. 6 shows the installation state of the foot when the horizontal ground reaction force that acts during batting is maximized in the striking motion. At this time, the horizontal ground reaction force is the foot wearer's foot. It is shown by a straight line Y extending from the central side of the metatarsal bone 8 toward the metatarsal bone 9 of the first finger.

Therefore, ideally, the auxiliary protrusions 4 and 4 are arranged on the straight line Y representing the direction of the ground reaction force in the horizontal direction described above, and the mounting angle θ of one of the auxiliary protrusions 4 is the above-mentioned. Providing in a direction orthogonal to the straight line Y provides a more effective anti-slip effect. Therefore, at least one attachment angle θ of the auxiliary projecting pieces 4 and 4 is 0 to 45 degrees with respect to the horizontal line P parallel to the toe projecting piece 1 if the toe projecting piece 1 is used as a reference as described above. The angle is set to be orthogonal to the straight line Y representing the direction of the ground reaction force in the horizontal direction within the range. At this time, in addition to steel, aluminum alloy, and titanium, a metal having high lightness and durability, nonmetal such as ceramic, FRP, carbon fiber, and synthetic resin are used for the spike body.

[0010]

According to the present invention, therefore, in the front stepping portion of the shoe sole, the impact is exerted on the side of the toe of the spike and the two left and right projections at the rear end, that is, at the butting. An auxiliary projecting piece integrally projecting with the connecting seat plate at least in the vicinity of the front part of the middle phalanx 9 of the first toe of the shoe-wearing foot, which is the direction of action of the ground reaction force in the horizontal direction immediately before As a result, slippage during batting can be suppressed, displacement and deformation of the sole can be prevented, and a stable batting foam can be maintained at all times. Therefore, the present invention has extremely high practical value as a spike for baseball shoes.

[Brief description of drawings]

FIG. 1 is a plan view showing a spike for baseball shoes of the present invention.

FIG. 2 is a bottom view showing the spike for baseball shoes of the present invention.

FIG. 3 is a side view showing the spike for baseball shoes of the present invention.

FIG. 4 is a plan view in which the spike for baseball shoes of the present invention is attached to the sole.

FIG. 5 is a schematic plan view showing a conventional spike for baseball shoes.

FIG. 6 is a schematic plan view showing a mounting position of the spike for baseball shoes of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Toe tip projecting piece 2 Projecting piece 3 Connecting seat plate 4 Auxiliary projecting piece 5 Coupling hole 6 Gap 7 Screw 8 Metatarsal bone 9 Metatarsal bone

Claims (2)

[Scope of utility model registration request] 1. A toe projecting piece 1, two left and right projecting pieces 2 and 2 projecting from the rear of the toe projecting piece 1, and each of these projecting pieces 1.
In a baseball spike having a connecting seat plate 3 for connecting the two, auxiliary connecting pieces 4, 4 are provided on the intermediate side between the toe projecting piece 1 and the two rear left and right projecting pieces 2, 2. A spike for baseball shoes that is mainly attached to the front tread part of the sole, which is characterized by being integrally projected. 2. The auxiliary projecting pieces 4, 4 are formed so as to be inclined inward so as to form an attachment angle θ of 0 to 45 degrees with respect to a horizontal line P parallel to the toe projecting piece 1. The spike for baseball shoes according to claim 1.