JPH08882Y2 - Soles of athletic shoes - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sole of athletics shoes.

[0002]

2. Description of the Related Art The sole of an athletics shoe is composed of a front sole with spikes attached and a rear sole without spikes. The front sole and the rear sole are made of the same material and are integrally formed. Some of them are formed of the same material or of different materials, and some of them are bonded to each other so that the front and rear soles partially overlap with each other near the trampling part in front of the arch when manufacturing shoes. is there. In either of the above configurations,
As shown in FIG. 4, it is necessary to embed the base portion of the spike 14 in the front bottom portion 12 or to embed a replaceable spike metal fitting, so that this portion needs to be thick. On the other hand, the rear bottom part 1 behind the stepping part 18
No. 3 was generally constructed thin so as not to increase the weight of the sole 11 or to prevent the flexibility of the entire shoe from being excluded. For this reason, such a shoe sole is, as a matter of course, at a position slightly rearward of the stepping portion 18, which is a boundary between the thick front sole portion 12 and the thin rear sole portion 13, as a matter of course.
Will be created.

By the way, it is known that when running fast such as in a short-distance competition or a long jump run, only the front sole of the sole of the foot touches the runway in front of the foot, that is, in the sole. Then, as the shoe runs, the ground contact position of the shoe sole moves from the stepped portion at the rear of the front sole to the tip of the toes. When the running is smooth, the cycle is only repeated, and therefore the step 17 on the sole does not affect the runner. However, if there is an unexpected unevenness on the track or if the movement of the feet is strange, the cycle will be misaligned and the sole 11 as shown in FIG.
The foot sometimes landed on the runway from the stepped portion 17.
Since the spikes 14 are attached to the front sole 12, the height difference from the rear sole 13 without the spikes is largest at the step portion 17, and the entire sole 11 is thick Since the step portion 17 that suddenly becomes thinner from the bottom portion 12 is most likely to bend, when landing on the runway from the step portion 17, the foot immediately after the step portion 17 of the shoe bends more than the bend required by the foot to run, and the foot Not only was it hurt, but the impact of landing was also transmitted directly to the soles of the feet.

Further, as mentioned above, such a sole 1
1 shows that the front sole part 12 having a large thickness is greatly bent immediately after the step part 17 which is suddenly thinned, but the desirable bending method of the shoe sole 11 is to some extent from the step part 17 to the arch part 16. It is to bend with an area.
Therefore, it is conceivable to extend the thick front sole 12 toward the arch 16 so that the bending position has a certain area. However, this increases the thick portion and increases the weight of the sole. A new drawback is caused. However, in the conventional state, only the portion immediately after the step portion 17 is bent, so that a gap is formed between the sole of the foot and the sole of the shoe, and the defect that the feeling of wearing the shoe is poor cannot be solved. Furthermore, if the shoe is worn for a long time, the thin portion immediately after the step portion 17 may be repeatedly bent, and the sole made of synthetic resin may be torn.

Even in the conventional shoe, there is one in which a protrusion 19 which is long in the shoe width direction is provided immediately behind the step portion 17 as shown in FIG. Like the spikes 14 attached to the front bottom portion 12 and the projections 15 also formed on the front bottom portion 12, the protrusions 19 prevent the shoes from slipping on the track and ensure that the force of the foot is transmitted to the track. It is provided for the purpose. Therefore, since the protrusion 19 has no function of adjusting the flexibility and the bending range of the shoe, the disadvantage that the shoe bends more than necessary when the foot lands on the stepped portion 17 of the shoe sole is eliminated. In addition, the bending range of the shoe sole could not be set to a certain range from the step portion 17 to the arch portion 16 instead of immediately after the step portion 17.

[0006] In addition, it is necessary to reinforce the entire rear bottom portion rearward from the trampling portion into a honeycomb shape to reinforce design registration No. 8031.
Although it is publicly known as No. 61, this design also has no function of adjusting the flexibility and the range of bending from the stepped part of the shoe to the arch part because the entire rear bottom part has a honeycomb shape. Furthermore, since the entire rear bottom part has a honeycomb shape and the front bottom part and the rear bottom part are configured to have the same thickness, the weight is much larger than when the rear bottom part is made thin, and the weight is light. It was difficult to make a perfect shoe sole. Even in the shoe sole or design registration No. 803161 as shown in FIG. 6, the shoe sole did not positively promote the running of the wearer.

[0007]

At present, short-distance athletics shoes and long jump shoes are required to have bare foot sensations that do not give the feeling of wearing them so that they can run fast. For that purpose, it is necessary to make shoes as light as possible, and the soles of the shoes are also required to have light quality.
Therefore, by devising a stepped portion formed between the thick front sole and the thin rear sole, it is possible to minimize the increase in weight of the entire shoe sole and prevent the stepped portion of the sole from bending more than necessary. It is intended to prevent the bending position from having a certain range from the step portion to the arch portion. Then, it is intended to prevent the shoe sole from tearing from the step portion even after repeated wearing. Furthermore, in the running motion in which the weight moves to the toes of the toes after landing, a shoe that gives a force that pushes up the rear sole of the shoe sole and actively promotes running It is the one that tries to reach the bottom.

[0008]

Therefore, in the present invention, when integrally molding the sole of a track and field shoe using a relatively hard synthetic resin, a thick front wall for fixing spikes is used. To the thin arch portion, a reinforcing portion composed of a partition wall and a concave portion is formed, and the reinforcing portion is formed so that its height gradually decreases as it moves from the front bottom portion to the arch portion. It is desirable that the reinforcing portion including the partition wall and the concave portion has a honeycomb shape or a lattice shape.

[0009]

As described above, according to the present invention, when the shoe sole of the athletics shoe is integrally formed by using the relatively hard synthetic resin, the front sole portion which has conventionally been thickened to fix the spike is used. And, in the stepped part that had occurred between the thin rear bottom part,
A reinforcing portion including a partition wall and a concave portion is formed. Moreover, the reinforcing portion is formed so that its height gradually decreases as it moves from the front bottom portion to the arch portion.
In the conventional shoe sole, the thin-walled portion immediately after the stepped portion was bent most, but in the shoe sole of the present invention, the bending position exists within a certain range due to the reinforcing portion including the partition wall and the concave portion. become. Moreover, unlike the conventional shoe sole that bends within a limited range of one straight line of the shoe width immediately after the step portion, the reinforcing portion composed of the partition wall and the concave portion gradually increases in height as it moves from the front sole portion to the arch portion. Since it is formed so as to have a low height, it is possible to provide a characteristic that it becomes easier to bend gradually from the front bottom portion to the rear bottom portion.

Therefore, if there is an unexpected unevenness on the track, or if the foot is not properly carried, even if the user lands on the track from the rear part of the foot part of the shoe sole, the reinforcement part composed of the partition wall and the recessed part provides the rear part of the foot part. Since it is difficult to bend, and the bending position has a certain range, not only can the shoe be prevented from bending more than the foot needs to run, but also the impact can be mitigated. Conventionally, the shape was thin from the rear part of the foot part of the shoe sole to the arch part, and the shape retention was poor, but in the present invention, since it is a reinforcing part consisting of a partition wall and a recess, the shape retention is good and the shape of the sole of the foot. A three-dimensional shape tailored to can be given to this part. In addition to the fact that the bending position has a certain range, the sole can easily conform to the shape of the shoe sole, and a shoe sole excellent in wearing feeling can be provided.

Further, since the shoe sole is a reinforcing portion composed of a partition wall and a concave portion from the rear part of the stepping part to the arch part, and has a three-dimensional shape corresponding to the shape of the sole, it does not normally bend to the sole. When a bending force is applied in the opposite direction, the sole has a repulsive force that pushes up the rear sole in an attempt to return to the original position. Therefore, in the running motion in which the heel falls due to the impact of landing, the weight moves to the fingertip from the next moment, and the heel rises, the shoe sole gives a repulsive force that pushes the rear sole up. Therefore, the soles of the shoes positively encourage the wearer's running. Furthermore, unlike a conventional shoe sole, which bends within a limited range of one straight line of the shoe width immediately after the step, the bending position also has a certain range from the trampling portion to the arch portion. , Repeated wearing will not cause the bent part to tear.

Various shapes of polygons can be considered as the shape of the reinforcing portion composed of the partition wall and the recessed portion, but in order to secure effective strength with the least number of partition walls, bending in the longitudinal direction of the shoe, width of the shoe. Considering the flexibility of bending in any direction, or the twisting that occurs between the front and rear soles of shoes, the honeycomb shape or lattice shape that can apply a uniform force in any direction with a small number of partition walls is the best. ing. In the case of the lattice shape, it is more preferable that the partition wall has an angle of about 30 ° to 60 ° with respect to the longitudinal direction of the shoe. Such a shape maximizes the reinforcing effect. Moreover, since the reinforcing portion has the concave portion, and the reinforcing portion is provided only in the necessary range from the front bottom portion to the arch portion, the weight increase due to forming the reinforcing portion can be minimized. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an example in which the present invention is applied to a shoe sole for a right foot, and when molding a shoe sole 1 with a relatively hard synthetic resin, from a front sole portion 2 thickened to fix a spike 4 The partition wall 7a and the recessed portion 7 are extended toward the thin arch portion 6 direction.
The reinforcing portion 7 composed of b is formed. In this embodiment,
Large and small protrusions 5 on the front bottom 2 and the rear bottom 3 to prevent slippage.
Is provided. Further, in this embodiment, the partition wall 7a and the concave portion 7b are
The reinforcing portion 7 composed of and has a honeycomb shape. In addition to the embodiment, the reinforcing portion may have any shape as long as it is a combination of polygons. FIG. 3 shows another embodiment in which the reinforcing portion 7 has a lattice shape, and when the angle θ between the lattice-shaped partition wall 7a and the longitudinal direction of the shoe is set to about 30 ° to 60 °, strength is improved. It has an excellent shape, which is most suitable for the purpose of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1, and is composed of a partition wall 7a and a recessed portion 7b extending from the front bottom portion 2 thickened to fix the spikes 4 to the thin arch portion 6 direction. The reinforcing portion 7 is formed so that its height gradually decreases as it moves from the front bottom portion 2 to the arch portion 6. The reinforcing portion 7 can be formed to be long or short according to the taste of the wearer, but the arch portion is sufficient at the maximum, and making it longer than this causes an increase in the weight of the entire sole. Not preferable. In addition, the partition 7a and the recess 7b
Since the arch portion 6 can be reinforced from the front sole portion 2 of the shoe by the reinforcement portion 7 made of, this portion is designed so as to conform to the shape of the foot when running while wearing the shoe with the sole of the present invention. The shape can be retained in a three-dimensional shape. Therefore, the sole of the foot easily conforms to the shape of the sole.

Due to the reinforcing portion 7 and the three-dimensional shape, when the sole 1 is given a force to bend in a direction opposite to the direction in which it normally bends, the sole 3 is moved upward in order to return to the original state. It will have a repulsive force to push up. Therefore, if the rear sole part 13 is lowered by the impact at the time of landing, the rear sole part 13 of the shoe sole 1 exerts the force of pushing up the heel of the wearer, so that the sole 1 is worn by the wearer. It will encourage running. As the relatively hard synthetic resin material used in the present invention, polyamide resin, aramid resin, polyurethane resin, polyester resin, EVA resin, ionomer resin and resin obtained by reinforcing them with fibers such as glass, titanium, ceramics, carbon, etc. Is mentioned. Further, as a method of manufacturing the shoe sole, injection molding, thermocompression molding, etc. can be considered.

[0016]

According to the present invention, since the reinforcing portion 7 including the partition wall 7a and the recessed portion 7b is formed so that its height gradually decreases as it moves from the front bottom portion 2 to the arch portion 6, the shoe. Even when landing on the track from the rear part of the foot part 8 of the sole 1, the rear part of the foot part 8 is difficult to bend, and the shoe does not bend more than necessary. Moreover, the reinforcing portion 7 can reduce the impact. Further, since the shape retention is improved by the reinforcing portion 7,
It is possible to give a three-dimensional shape that matches the shape of the sole of the foot, and it is easy for the sole of the foot to conform to the shape of the shoe sole in combination with having a certain range of bending range. Further, since the bending range has a certain area, the bending portion is not torn even if the wearer wears it repeatedly.

The three-dimensional shape corresponding to the shapes of the reinforcing portion 7 and the sole of the foot gives a repulsive force that pushes the rear sole portion 3 of the shoe sole 1 and pushes the shoe sole 1 upward, thus promoting the running of the wearer. It will also have the function of doing. Moreover, the reinforcing portion 7 has the concave portion 7b.
Since it is provided only in the minimum necessary range from the front bottom part 2 to the arch part 6, the weight increase can be minimized. If the reinforcing portion 7 is formed in a honeycomb shape or a lattice shape, the reinforcing effect is maximized with a small number of partition walls 7a, and the weight increase is small.

[Brief description of drawings]

FIG. 1 is a plan view of the sole of an athletic shoe embodying the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a plan view of an essential part showing another embodiment of the reinforcing part of the present invention.

FIG. 4 is an end view of a conventional shoe sole.

FIG. 5 is an explanatory diagram showing a state in which the vehicle has landed on a track from a step portion.

FIG. 6 is a plan view of relevant parts near a stepped portion of a conventional shoe sole.

[Description of sign]

 1 shoe sole 2 front sole part 3 rear sole part 4 spikes 5 protrusions 6 arch part 7a partition wall 7b recessed part 7 reinforcement part 8 treading part 11 shoe sole 12 front bottom part 13 rear bottom part 14 spike 15 protrusion 16 arch part 17 step part 18 treading part 19 B shoes

Claims (3)

[Scope of utility model registration request] 1. When a sole of an athletics shoe is integrally formed by using a relatively hard synthetic resin, a partition wall is formed from a thick front wall portion for fixing spikes to a thin arch portion. A shoe sole for athletics shoes, which comprises a reinforcing portion formed of a concave portion, and the height of the reinforcing portion is gradually reduced as the front sole portion moves to the arch portion. 2. The sole of the athletic shoe according to claim 1, wherein the reinforcing portion including the partition wall and the concave portion has a honeycomb shape. 3. The sole of the athletic shoe according to claim 1, wherein the reinforcing portion including the partition wall and the concave portion has a lattice shape.