JPS6024162Y2 - athletic shoe soles - Google Patents

Description

[Detailed explanation of the invention] In recent years, while the jogging boom has become more and more popular, so-called running injuries have also become a focus of attention, and shoe manufacturing technology has also been equipped with functions to overcome these running injuries. More and more emphasis is being placed on the development of shoes.

Of course, such running injuries have a wide variety of causes, and it cannot be said that they are solely caused by structural defects in shoes, but recent research has been conducted into the causes from the physiological perspective of exercise. It has been found that the occurrence of so-called "overpronation" is a major cause of running injuries.

What is "overpronation"? In the mechanics of running,
First, the heel lands, and as the foot moves forward, the weight is applied to the outside of the foot, and then the weight is transferred inward.Following this, the entire foot tilts inward, and then the weight shifts to the tip of the toe. This state in which the foot momentarily tilts inward, which is said to be a 3/4 foot position, is called pronation.

A state in which this rotation is more than necessary, that is, a state in which the ankle rotates inward in a dogleg shape is called "overpronation."

It is generally said that the load caused by landing is about three times the body weight, and the turning phenomenon is said to be a natural phenomenon that cushions the landing impact and protects the lower limbs from damage.

However, when ``overpronation'' as mentioned above occurs, it causes sprains and injuries to various joints of the lower limbs, mainly the ankles, and the femur above the knee tends to twist outward to maintain the balance of the whole body. On the other hand, the opposite movement occurs from the knee down, inward, which places extra stress on the knee joint, which is the joint between the knees, and this is said to be a cause of knee failure.

It is said that this phenomenon of excessive inversion is more likely to occur on the beads if the sole of the shoe is worn inward, or if the insole or insole is too soft.

Therefore, the main purpose of this invention is to place particular emphasis on the structure of the heel of the shoe, and to prevent the above-mentioned overpronation from occurring, and in addition, to further improve the running speed, which is the original function of the shoe. We provide athletic shoes.

That is, the present invention provides an athletic shoe sole consisting of at least an outer sole and an intermediate sole, in which a hard elastic body surrounds the heel side of the foot on the heel-corresponding side of the intermediate sole, and the side-corresponding part is called the outer-corresponding part. The pupil side wall portion is formed to be somewhat taller than the pupil side wall portion, and the heel stepping portion has an elasticity slightly lower in hardness than the pupil side wall portion. Moreover, the present invention relates to an athletic shoe sole having an intermediate sole mainly composed of a front treading part having good flexibility.

The above-mentioned present invention will be explained with reference to the drawings. Fig. 1 shows an intermediate sole consisting of a pupil side wall part 1, a heel stepping part 2, and a front stepping part 3, each having a different hardness.

The pupil side wall part 1 stands up from the heel stepping part 2 in a curved shape surrounding the heel part of the foot.

As the constituent member used for the pupil side wall portion 1, a hard elastic member capable of suppressing the inclination of the heel to the left and right is suitable, such as natural fiber, synthetic rubber, styrene-butadiene rubber; , Imprengo, Mu, Ethylene Vinyl, Ayate 1, etc., or mixtures of two or more thereof are used.

At this time, it is desirable that the above-mentioned hard elastic materials used for the pupil side portion 1 have a hardness of 65 to 7 degrees.

? The heel stepping part 2 is made of a material having appropriate elasticity that mainly relieves the impact caused by landing pressure during running and prevents the heel part of the foot from sinking excessively.

To the part 2 of the tumor. Elastomers such as natural rubber, synthetic rubber, isoprene rubber, ethylene vinyl acetate copolymer, etc., or mixtures thereof are used as appropriate.

At this time, the heel stepping part 2 is formed of an elastic body having a hardness somewhat lower than that of the pupil side wall part 1, that is, a hardness of 60 to 6 degrees.

Next, the front stepping section 3. A cushioning material with good flexibility and a hardness lower than that of the stepping portion 2, that is, about 45 to 55, is used.

As the cushioning material, it is desirable to use structural members having high flexibility and elasticity, such as natural rubber or synthetic rubber.

Therefore, since the present invention has the above-mentioned configuration, the pupil side wall portion 1 formed of a hard elastic member on the vagina suppresses the excessive inclination of the heel to the left and right sides, thereby preventing so-called hyperpronation. This makes it possible to prevent the occurrence of foot problems and prevent various types of foot injuries caused by overpronation as described above.

Furthermore, as shown in FIG. 3, the pupil side wall 1 has appropriate hardness and elasticity, and has a structure that covers the entire heel, so it can be used as a prosthetic material for the heel of a shoe instead of a so-called heel counter. It also has the advantage of being able to be used as a material.

Furthermore, the heel forming the pupil side wall 1 is completely surrounded by the pupil side wall 1, giving stability to the heel, and has appropriate elasticity, so it fits well along the foot. is also good.

Of course, the pupil side wall 1 can be used as it is in a shoe having a heel counter 5 as shown in FIG. Both are possible.

In addition, as shown in Figures 2 and 4, the pupil side wall 1 is formed so that the inner side of the shoe is taller than the outside, so that the inclination toward the inner side of the foot is more emphasized. This can further strengthen the prevention of overpronation.

As another method, as shown in FIGS. 2 (2) and 5 (5), the intended purpose may be achieved by forming the pupil side wall 1 so that its inner equivalent portion extends to the arch of the shoe. can.

As another method, it is also possible to further strengthen the prevention of the inside of the opening 5 by making the inner side of the hole somewhat harder than the side of the outer side.

In addition, the heel side wall part 1 has a heel stepping part 2 as shown in FIG. 2I.
It is also possible to form a connection with a different material, but as shown in Fig. 2■
It is desirable that both are integrally formed from the same member as shown in .

That is, by doing so, the bonding force of the pupil side wall portion 1 is naturally strengthened, and the supporting surface is made good, and the molding process is simplified, making mass production possible.

Next, the heel treading part 2 is designed to cushion the impact of landing, which is said to be applied by about three times the body weight during running, and has an appropriate hardness that prevents the heel from sinking too much due to the landing pressure. It is constructed from a hard member with

In other words, this sinking of the heel causes displacement and deformation of the heel stepping surface due to the landing pressure of the heel, which may cause overpronation. It is necessary to determine the shape of the surface as appropriate.

Here, as mentioned above, a hardness of about 60 to 64 is desired.

If the heel-treading part 2 is formed with such hardness, it will not only alleviate the landing impact caused by running, but also cause the landing surface to be slightly curved when landing, as shown in FIG. The heel of the foot is pressed from both sides of the pupil side wall 1, and the heel of the foot is more strongly surrounded, and the stability of the heel is further strengthened.

Next, the front stepping portion 3 is made of a flexible cushioning material that does not inhibit the flexibility of the foot.

That is, the front stepping part 3 is the part where the forward bending motion is most intense in the running mechanism, and the nature of the movement is completely different from that of the heel part, which moves (bends) less.

Therefore, it is natural that a member with good flexibility that particularly promotes bending is used for the front stepping portion 3.

Furthermore, as shown in FIGS. 1 and 5, the overlapping surface 4 of the front stepping part 3 and the heel stepping part 2 is such that the overlapping surface 4 gradually slopes gently from the heel to the toe. It is formed.

Forming the overlapping surface 4 in this way has the advantage that the members having different hardnesses are sequentially polymerized and bonded to each other, so that the extreme difference in hardness can be eliminated and smooth flexibility of the sole can be obtained. There is.

Furthermore, since the present invention has the above-mentioned configuration, the pupil side wall 1 of the vase is exposed on the back side of the shoe, resulting in an unprecedented configuration, and the design effect can be further increased, making it suitable for jogging shoes. It has extremely high practical value as it can be used in all types of running shoes, such as running shoes, marathon shoes, and training shoes.

[Brief explanation of drawings]

The drawings show one embodiment of the sports shoe sole of the present invention, and FIG. 1 is a perspective view schematic diagram showing an intermediate sole attached to the sports shoe sole of the present invention. Figure 2 I and ■ are sectional views of the main parts of Figure 1, where I is X-
A cross-sectional view taken along the X-ray, ■ is a cross-sectional view of the same portion according to another embodiment. FIGS. 3I and 3 are schematic cross-sectional views of essential parts of a sports shoe equipped with the sports shoe sole of the present invention. FIG. 4 is a schematic side view showing an intermediate sole according to another embodiment. FIGS. 5 and 5 are examples of inner side views of a sports shoe sole equipped with the sports shoe sole of the present invention. FIG. 6 is a schematic cross-sectional view of the main part of the sole of an athletic shoe, showing how it is used.

Claims (1)

[Claims for Utility Model Registration] 1. In a sports shoe sole consisting of an intermediate sole b in contact with the lower surface side of the upper part B, and an outer sole a connected to the lower surface side of the intermediate sole, the heel of the intermediate sole A heel side wall portion 1 made of a hard elastic body surrounding the heel side of the foot is formed on the corresponding side A, and a heel stepping portion 2 having a somewhat lower hardness and good elasticity than the heel side wall portion 1, and A front stepping part 3 having lower hardness and better flexibility than the heel stepping part 2 is coupled to the heel stepping part 2, and the heel side wall part 1 has a corresponding inner side opening. Athletic shoe sole A02 characterized in that it is formed somewhat taller toward the outer side corresponding to the outer side.The heel corresponding side A is formed by joining the heel side wall portion 1 and heel treading portion 2 with a different material. Sports shoe sole A03 according to claim 1 of the registered utility model, characterized in that the heel-corresponding portion side A is integrally formed with the heel side wall portion 1 and the heel stepping portion 2 of the same material. Sports shoe sole A0 according to claim 1, wherein the heel stepping part 2 and the front stepping part 3 are connected to each other in a superimposed manner that gradually slopes gradually from the heel to the toe and overlaps each other. Sports shoe sole A0 according to claim 1 of the utility model registration, characterized in that a surface 4 is formed.