JPH04133706U - spike - Google Patents

Abstract

(57) [Summary] [Purpose] To provide spikes that can suppress an increase in weight even when the number of spikes is increased, and can effectively utilize the force applied in the moment from landing to kicking off. [Structure] The edge 11a of the flange 11 is provided with columnar protrusions 20 protruding from at least three locations, and the columnar protrusions 20
is at least a large diameter proximal protrusion 21 and a small diameter distal protrusion 23
and has. Further, the flange 11 has a trifurcated shape branched at equal intervals, and a columnar projection 20 is formed protruding from each edge 11a.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a hard plate attached to the front stepping part of spiked shoes for track and field. It concerns the spikes that can be attached.

0002

[Conventional technology]

Conventionally, the soles of track and field shoes have a hard plate made of synthetic resin in the front tread area. is installed. A female screw member is embedded in this hard plate at a predetermined location. Then, a metal spike can be removably attached to the screw hole of this female screw member. The sea urchin is turning.

0003 Meanwhile, the Japan Athletics Federation revised its rules in 1988. stop As a general rule for track and field competitions, the soles and heels of competition shoes must have no more than 11 spars. It has been revised to have a structure that allows for the attachment of an iku. With this amendment, Spike's book It is now possible to install any number of wires up to 11.

0004

[Problem that the idea aims to solve]

For shoe wearers, the number of spikes is important to improve road grip and anti-slip properties. The more the better. However, increasing the number of spikes gradually increases the weight significantly. It has the disadvantage of adding Also, while running, the contact point from landing to kicking off is the metatarsal bone of the little finger. Since the spikes will move from the ground to the phalanges of the thumb, align the spike attachment site with this ground contact process. is preferable. However, the size of the female threaded member embedded in a predetermined location and The size of the spike flange is constant due to the relationship between the spike retention force and landing impact. The size of is required. Therefore, for example, spacing should be applied to the lower part of the metatarsal bone of the little toe. It is not possible to set spikes, and it is not possible to make the distance between the spikes closer than the limit. I couldn't do it either. Therefore, when landing, the part of the ground and the part of the spikes do not necessarily match, and the landing Not only is it undesirable for running, but it can also put stress on your feet that is not related to competitive ability. It was.

[0005] The present invention was made in view of these problems of the conventional technology. The purpose of this is to suppress the increase in weight even if the number of spikes is increased. In addition to being able to do this, it also makes effective use of the momentary force from landing to kicking off. It is intended to provide a spike that can be used.

[0006]

[Means to solve the problem]

In order to achieve the above purpose, the spike in the present invention protrudes from the edge of the flange. The columnar projections are provided at at least three locations, and the columnar projections have at least a large diameter. It has a proximal protrusion and a small-diameter distal protrusion. In addition, the flange has a trifurcated shape with equally spaced branches, and each edge has a protruding columnar projection. It is something that comes into being.

[0007]

[Effect]

Since the spike has columnar projections in at least three places, one spa It can be supported at 3 points when in contact with the ground, improving road grip and anti-slip properties. can be done. In addition, when the spikes are attached to a hard board, It can be aligned with the metatarsal bone of the little finger, which is the landing point, and the spikes can be used while running. It can adapt to the contact area from the landing to the kick-off, and has a precise corner. It is possible to perform work, and it is also possible to obtain good landing balance.

[0008]

【Example】

Examples will be described with reference to the drawings. The spike 10 according to the present invention is made of non-ferrous metal such as aluminum alloy or titanium alloy, or It may be formed from a material such as ceramic or iron. 11 is a flange of the spike 10. The flange 11 can also be disposed in a disc shape. However, in order to reduce weight, it is possible to use an equilateral triangular shape with rounded corners or a triangular shape with curved sides. It is preferable to form a triangular shape, such as a square shape, in which each edge 11a is equally spaced. Yes. 12 is a mounting hole provided in the center of the flange 11.

[0009] The edge 11a of the flange 11 is provided with columnar projections 20 at at least three locations. It has been formed. In the illustrated example, a columnar projection 2 is provided on each edge 11a exhibiting a trident shape. 0 are formed protrudingly, and three columnar projections 20, 2 in which spikes 10 are arranged at equal intervals. 0,20. Each columnar projection 20 has at least a large-diameter proximal end projection and a small-diameter distal end projection. It has a stepped shape in which the diameter becomes gradually smaller from the lunge 11 side. Then, the top of each protrusion A stepped portion is formed so that the surface thereof is parallel to the surface of the flange 11. Thus, together with the fact that the three columnar projections 20, 20, 20 are close to each other, Spikes 10 are not easily buried in the surface of the truck, and the surface of the truck is It is less likely to cause damage and allows the wearer to extend their stride.

0010 FIG. 1 shows a first embodiment of a columnar projection 20. As shown in FIG. In this example, the columnar projection 20 is formed to protrude from the edge 11a of the flange 11. A cylindrical large-diameter proximal protrusion 21, a base protruding from the center of the proximal protrusion 21; A cylindrical intermediate protrusion 22 having a smaller diameter than the end protrusion 21; It has a three-stage structure with a cylindrical tip protrusion 23 having a smaller diameter than the intermediate protrusion 22 formed. There is.

[0011] FIG. 2 shows a second embodiment of the columnar projection 20. As shown in FIG. In this example, the columnar projection 20 is formed to protrude from the edge 11a of the flange 11. A large diameter proximal protrusion 24 having a cylindrical shape, and a protrusion formed in the center of the proximal protrusion 24. It has a two-stage configuration including a cylindrical distal protrusion 25 having a smaller diameter than the proximal protrusion 24 .

0012 FIG. 3 shows a third embodiment of the columnar projection 20. In this example, the columnar projection 20 is formed to protrude from the edge 11a of the flange 11. A proximal protrusion 26 having a large diameter and an inverted truncated conical shape is formed protrudingly in the center of the proximal protrusion 26. A first intermediate protrusion 27 having an inverted truncated conical shape and having a smaller diameter than the proximal protrusion 26; A second intermediate portion having an inverted truncated conical shape and having a diameter smaller than that of the first intermediate protrusion 27 is formed to protrude from the center portion of the second intermediate portion 27. Intermediate protrusion 28 , smaller than the second intermediate protrusion 28 formed protruding from the center of the second intermediate protrusion 28 It has a four-stage configuration of tip projections 29 each having a cylindrical diameter.

[0013] 30 is an attachment for attaching the spike 10 to a hard plate 40 attached to the sole of the shoe; It's a screw. The head 31 of the mounting screw 30 is a screw turn that rotates a normal land spike. It is preferable to form it in a shape that fits into the hole edge of the tool.

[0014] The spike 10 is attached to a hard plate by inserting the threaded part 32 of the mounting screw 30 into the mounting hole 12. What is necessary is just to screw it into the desired female screw member 41 embedded in 40. At this time, as shown in FIG. The columnar process 20 is placed at the lower part of the metatarsal bone of the little finger that first touches the ground during running. In addition, one spike 10 can have three columnar projections 2. 0, 20, and 20 can be placed close to each other, and the contact area and the spike area when landing are can be approximately matched. Note that 10a is a conventional spike in which only one columnar projection is provided at the center of the flange. It is In addition, 10b has a raised protrusion on the hard plate 40 in order to improve the anti-slip property. It is a protrusion.

[0015] Next, a test conducted on the spike 10 according to the present invention will be explained. The spikes used in this invention are shown in Figure 1. The comparative product has a disc-shaped flap. One columnar projection shown in Fig. 1 is formed protrudingly in the center of the plane of the flange, and the flange A device with a threaded portion protruding from the center of the bottom was used. Each of the above spikes is attached to a board, and top-class short-distance athletes are able to wear them from above the mounting board. I applied the same force as I would apply at the edge of the earth. and the vertical impact force and maximum impact force and the horizontal resistance force and the time until its maximum value occurs. It was measured. The results are shown in Table 1.

[0016]

[Table 1] FZ: Maximum value of the vertical component of the force that the body receives from the ground [kgf] FY: Maximum value of the longitudinal component of the force that the body receives from the ground [kgf] TZ: Time from the moment of landing until reaching FZ [msec] ] TY: Time from the moment of landing to reaching FY [msec] Values in parentheses are standard deviations, and there is a significant difference at 5% for TZ.

[0017] From the above results, the value of the product of the present invention is significantly larger in TZ. This thing is , the time it takes for the sole of the shoe to reach the ground (the time it takes for the spike to penetrate the ground) This means that the shoe is significantly longer, which means that the shock felt by the wearer when landing is reduced. It gets colder. Although there is no significant difference, the inventive product is smaller in FZ; It is shown that. Furthermore, in terms of TY, the value of the product of the present invention is smaller. This makes it stronger early on. This means that the track paving material can be gripped by force. In fact, this invention was proposed in FY. The product is larger. And if FY is large, the time from landing to takeoff is It is thought that the effect as a "lever" will be greater, making it easier to shift weight smoothly. It will be done.

[0018]

[Effect of the idea]

The present invention is constructed as described above, and the spike has three columnar projections. Therefore, one spike can support three points when in contact with the ground, making the landing more stable. It is possible to increase the durability and reduce the impact. In addition, when the spikes are attached to a hard board, You can run the spikes by aligning the landing point with the lower part of the metatarsal bone of the little finger. It can be adapted to the ground contact area from mid-landing to kicking off, resulting in a good landing. You can achieve earth balance. Therefore, it is excellent for corner work and improves propulsion force. do. Furthermore, when attaching to a hard board, position the three columnar protrusions as desired. It is possible to improve the fit of the wearer. In addition, the spikes are less likely to be buried in the track surface, and the track surface It is less likely to damage the feet and allows the wearer to lengthen their stride.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a first embodiment of a spike;

FIG. 2 is a perspective view of a second embodiment of the spike.

FIG. 3 is a perspective view of a third embodiment of the spike.

FIG. 4 is a bottom view of the spikes attached to the hard plate.

[Explanation of symbols]

10 Spike 11 Flange 11a Edge 20 Columnar process 21, 24, 26 Proximal protrusion 23, 25, 29 Tip protrusion

Continuation of front page (72) Creator Akira Kataoka 5-6-2 Tsukishigaoka, Kita-ku, Kobe City (72) Creator Morio Nakagawa 5-5-78 Karibadai, Nishi-ku, Kobe City

Claims (2)

[Scope of utility model registration request] 1. A spike comprising at least three columnar protrusions protruding from the edge of the flange, the columnar protrusions having at least a large-diameter proximal protrusion and a small-diameter distal protrusion. 2. The spike according to claim 1, wherein the flange has a trifurcated shape branching at equal intervals, and has columnar projections protruding from each edge.