JP2016036704A - Sole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sole that prevents excessive pronation by paying attention to the structure and function of sustentaculum tali which composes foot bone.SOLUTION: The sole placed inside a shoe is designed to have a structure supporting sustentaculum tali, cuboideum bone, and the first metatarsal bone/sesamoid bone which compose foot bone.SELECTED DRAWING: None

Description

    The present invention relates to a shoe sole. In particular, the present invention relates to a shoe sole that has an effect of preventing excessive varus during walking exercise.

  Here, the so-called “varus” and the adverse effects caused by the club will be described in detail based on the skeleton structure of the foot. In the following description, regarding the skeleton structure of the foot, [H. F. Frick, B.M. Kummer, R.A. V. Reference was made to Putz, “Wolf, Human Anatomy Atlas, New Edition, pages 404-407” (published on April 20, 2001 by Nishimura Shoten). Further, in the following description, with respect to the direction of the sole, “front” refers to the direction toward the toe, “inside” refers to the left side for the right foot, and the right side for the left foot.

  The pronation of the foot is defined as a movement in which the arch, mainly the medial longitudinal arch, is excessively lowered so that the talus on the rib turns inward and the rib falls inward. The pronation originally has a function and action as a so-called shock absorber, which absorbs an impact when the heel lands on the ground during walking motion. However, when the pronation is excessive, that is, when the pronation becomes excessive, adverse effects such as flat feet, hallux valgus, hallux valgus, buoyancy, hammer toe, lower tibial fatigue fracture, and the like are caused. In addition, pronation is synonymous with varus, abduction, dorsiflexion, and the like.

  The tarsal bone is composed of three wedge bones, a cubic bone, a scaphoid bone, a talus, and a rib. Cubic bones are continuously arranged in front of the ribs, and the talus, scaphoid and wedge bones are arranged in this order on the ribs and the cubic bones. When the skeleton of the foot is observed from the medial side of the skeletal view (50%), the talus neck is in front of the talus, and the scaphoid, intermediate wedge, medial scaphoid, and the first metatarsal rough surface are in front of it. The first metatarsal bone, seed bone, proximal phalanx, and distal phalanx are arranged. In addition, a rib is placed under the talus. When the ribs (100%) are observed from the medial side, the posterior talar joint surface of the rear part of the talus covers the upper part of the ribs, and the distance projection protrudes inward from the front upper part of the ribs like an overhang. ing. The upper surface of the distance projection is the metatarsal joint surface and the anterior talus joint surface, supporting the talus and at the same time serving as a stopper that prevents the ribs from tilting inward. The distance projection is not observed from the outer side of the foot skeleton and the outer side of the rib.

  When observing a human foot vertically, the talus is piled up like a building block through the subtalar joint via the subtalar joint, and the tibia and ribs via the ankle joint above the talus, The structure is easy to move. From the shape of the 7 tarsal bones, 5 metatarsals and 14 ribs themselves that make up the skeleton of the foot, the bones of the foot itself, especially the ribs that make up the foot bone, can easily tilt inward. Yes. As described above, the distance projection serves as a stopper that prevents the rib from inclining inward. Therefore, the present inventor has inferred that it is important to support the distance projection in order to prevent excessive pronation. By the way, as a method for preventing excessive pronation, various insoles such as an insole having an anatomical structure supporting an inner longitudinal arch, a lateral arch and an outer longitudinal arch have been proposed and put on the market. I came.

  For example, Patent Document 1 supports the three points of the first metatarsal seed bone, the fifth metatarsal rough surface, and the rib bulge from the sole of the foot, and enables the center of gravity to be stabilized by the three-point balance, thereby supporting the sole of the foot. The insole for shoes which can give the stimulus which aligns the body interlocking from the body and returns to a normal posture is disclosed. However, the insole described in Patent Document 1 is not a structure that supports the distance projection. The rib bulge supported by the insole described in Patent Document 1 is from the plantar surface of the foot bone (70%), from both the lateral and medial surfaces of the foot bone (50%), and the rib ( (100%) is a bulge formed over the entire edge of the posterior end of the rib at a site observable from the proximal surface, the medial surface, and the lateral surface (see above [HF Frick, B. Kummer, edited by RV Putz, "Wolf, Human Anatomy Atlas, New Edition, pages 404-407"). The rib bulge is the location where the calf gastrocnemius and soleus muscles are attached via the Achilles tendon. The Achilles tendon itself is necessary for walking or jumping, but even if the three points of the first metatarsal seed bone including the rib bulge and the fifth metatarsal rough surface are supported from the sole of the foot, There is no effect to prevent the reduction of the rib, which is a major factor of the pronation phenomenon.

JP 2013-150797 A

The problem to be solved by the present invention is focused on the structure and function of the distance projection, which is a component of the tarsal bone composed of the wedge bone, the cubic bone, the scaphoid bone, the talus, and the rib, To provide a shoe sole that is effective in preventing excessive pronation.
Other problems and advantages to be solved by the present invention will be clarified sequentially.

  Conventionally, the structure and function of the distance projection corresponding portion, that is, (1) the distance projection protrudes inwardly like an overhang from the front upper part of the rib, and the upper surface of the distance projection is the metatarsal joint surface and Shoes that prevent excessive pronation by focusing on the anterior talus joint surface and supporting the talus and (2) acting as a stopper to prevent the ribs from tilting inward There has never been research or development of the bottom and insole. The present inventor has researched and developed a shoe sole that prevents the novel excessive pronation by paying attention to the structure and function of the above-described distance projection. In the process, it was found that the desired effect could not be achieved simply by making the sole so that only the distance protrusions do not drop. Furthermore, as a result of investigation, it was discovered that excessive pronation can be prevented by supporting the distance projection, the cubic bone, and the first metatarsal seed bone (acupuncture seed bone) simultaneously or almost simultaneously. Therefore, the problem is solved by the means described in the following items. In the present invention, the distance projection, the cubic bone, and the first metatarsal seed bone (acupuncture seed bone) are specified as the distance projection, the cubic bone, or the first metatarsal seed bone (acupuncture seed bone). The location is not defined, but is defined as a circular region having a diameter of 25 mm, for example, centering on the center portion of the distance projection, the cubic bone, or the first metatarsal seed bone (acupuncture seed bone). In addition, the said circular area | region is suitably changed with the size of the leg | foot which considered age, sex, etc.

Therefore, the above-mentioned problem is solved by means described in the following items.
1. A shoe sole configured to support a distance projection, a cubic bone, and a first metatarsal seed bone constituting a foot bone in a shoe sole to be mounted in a shoe.

  2. In the shoe sole according to the item 1, the hardness of the material of the portion corresponding to the distance projection, the portion corresponding to the cubic bone, and the portion corresponding to the first metatarsal seed bone is greater than the hardness of the material of the remaining portion. By doing so, the distance projection, the cubic bone, and the first metatarsal seed bone are supported.

  3. In the above item 1 or 2, a design having a predetermined shape is formed on the sole of the shoe.

  4). In 3 above, the design is cylindrical.

According to the invention described in claim 1, the following effects are achieved.
One prior art is an insole that has an anatomical structure that directly supports the arch. However, since the arch portion is composed of a plurality of fine bones, even if the arch portion is directly supported, it can be supported only partially. It protrudes inward like an overhang from the upper front of the rib, and the upper surface is the mesotal anterior surface and the anterior talar joint surface, supporting the talus and preventing the rib from tilting inward It is possible to prevent the ribs from being tilted inward by supporting the distance projection serving as a stopper. However, on the other hand, there is a secondary reaction that the foot tends to tilt outward. Therefore, by supporting the cubic bone, it is possible to suppress a secondary reaction that makes it easier for the foot to tilt outward. On the other hand, as a reaction, a further secondary reaction occurs in which the foot tends to tilt forward. Therefore, by supporting the first metatarsal seed bone, that is, the base of the heel, it is possible to suppress a side reaction that makes the leg easily tilted inward. By performing the three strokes continuously in the order described above, it is possible to prevent excessive pronation, adjust the balance of the foot bones, and return to a normal standing posture. This effect is an effect that cannot be achieved from the conventional anatomical shoe sole and insole supporting the inner longitudinal arch, the lateral arch and the lateral longitudinal arch, or the insole described in Patent Document 1. is there.

  According to the invention described in claim 2, in the shoe sole described in claim 1, the hardness of the material of the portion corresponding to the cubic projection and the portion corresponding to the first metatarsal seed bone corresponding to the distance projection is obtained. Since the structure is made to support the distance projection, the cubic bone, and the first metatarsal seed bone by increasing the hardness of the material of the remaining portion, the insole is similar to the insole described in Patent Document 1. Unlike the structure in which the concavo-convex part is formed on the surface of the shoe, the use of the shoe sole of the present invention makes the surface of the insole substantially flat, so that there is no sense of incongruity during walking. Furthermore, by selecting the hardness according to various conditions such as age, gender, and health level, the product lineup will be abundant and will contribute to merchandising.

  According to the invention described in claim 3, in the shoe sole described in claim 1 or 2, a design of a predetermined shape is formed on the bottom of the shoe sole, so that the insole described in Patent Document 1 is formed. Unlike the structure that forms irregularities on the surface, when using the shoe sole of the present invention, since the surface of the insole can be made substantially flat, there is no sense of incongruity during walking, and the design provided on the sole bottom of the shoe is The bottom of the foot is pressed from below, and a synergistic effect is exhibited with the hard portion formed on the distance projection corresponding portion, the cubic bone corresponding portion and the first metatarsal bone corresponding portion of the shoe sole. Furthermore, by making the design provided on the bottom of this bottom into a design that matches various conditions such as age, sex, and health level, the product lineup will be abundant and will contribute to merchandising.

  According to the invention described in claim 4, the design provided on the bottom bottom portion of the shoe is formed in a columnar shape. In addition to the effect of the invention described in claim 3, the force that presses the bottom of the foot from the bottom has other shapes. It becomes bigger than that.

In Example 1 of this invention, the perspective view which showed the distance projection corresponding | compatible part formed in a shoe sole, the cubic bone corresponding part, and the 1st metatarsal seed bone corresponding part with the skeleton figure of the leg | foot. The bottom view of Example 1 of this invention. FIG. 3 is a sectional view taken along the plane A-A ′ of FIG. 2.

    Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a distance projection corresponding part, a cubic bone corresponding part and a first metatarsal seed bone corresponding part formed on a shoe sole according to the present invention in a skeleton diagram of a foot, and each range is conceptually illustrated. Is shown. The distance projection corresponding part 1 is a circle having a diameter of about 25 mm to 35 mm with the distance projection 2 approximately at the center. The cubic bone corresponding portion 3 is a circle having a diameter of about 25 to 35 mm about the cubic bone 4 at the center. The first metatarsal seed bone corresponding portion 5 has a circular shape having a diameter of about 25 mm to 35 mm about the two first metatarsal seed bones 6, 6. The distance projection corresponding part 1, the cubic bone corresponding part 3, and the first metatarsal seed bone corresponding part 5 are selected in accordance with the size of the foot for each age and sex within a diameter range of about 25 mm to 35 mm. .

2 is a bottom view of the first embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along the line AA ′ of FIG. The sole 7 having a size of 19 cm and a thickness of 10 mm was produced using EVA (ethylene-vinyl acetate copolymer) as a material. The distance projection corresponding portion 8 is a circle having a diameter of 25.0 mm and a thickness of 3 mm at the center of the distance projection 2, and the cube bone corresponding portion 9 is a diameter of 25.0 mm and a thickness of 3 mm at the center of the cube bone 4. The circular, first metatarsal seed bone corresponding portion 10 was manufactured in a circular shape having a diameter of 25.0 mm and a thickness of 3 mm around the two first metatarsal seed bones 6.
As shown in FIG. 3, the distance projection corresponding portion 8 was manufactured by setting the hardness of the diameter of 25.0 mm and the thickness of 3 mm to 80 (Asker TYPE-C) at the bottom of EVA which is the material of the shoe sole 7. Although the cross-sectional view is not shown, the cubic bone corresponding portion 9 was manufactured by setting the hardness of the diameter of 25.0 mm and the thickness of 3 mm to 80 (Asker TYPE-C) at the bottom of EVA which is the material of the shoe sole 7. Similarly, although the cross-sectional view is not shown, the first metatarsal seed bone corresponding portion 10 has a diameter of 25.0 mm and a thickness of 3 mm at the bottom of EVA, which is a material of the shoe sole 7, having a hardness of 80 (Asker TYPE- C). In the examples, the hardness of portions other than the distance projection corresponding portion 8, the cubic bone corresponding portion 9 and the first metatarsal seed bone corresponding portion 10 of the shoe sole 7 was set to 60 (Asker TYPE-C).

  As described in detail above, the shoe sole of the present invention has the structure and function of the distance projection, that is, the distance projection supports the talus and serves as a stopper that prevents the rib from inclining inward. As a result of research and development focusing on the fact that it is doing, it has a structure that supports the distance process, the cubic bone and the first metatarsal bone that constitute the foot bone in the shoe sole, especially corresponding to the distance process By making the hardness of the material of the portion corresponding to the cubic bone and the portion corresponding to the first metatarsal seed bone greater than the hardness of the material of the other portion, the distance projection, the cubic bone and the first bone Since the structure of supporting the metatarsal seed bone is used, it is described in the conventional anatomical shoe sole supporting the medial longitudinal arch, lateral arch and lateral longitudinal arch, or Patent Document 1. The insole is fundamentally different in structure, and the excessive pronation during gait movement Sealed, since the adverse effects resulting directly or indirectly in excess times have can be prevented or reduced, there is industrial applicability as sole.

DESCRIPTION OF SYMBOLS 1 Distance protrusion corresponding | compatible part 2 Distance protrusion 3 Cubic bone corresponding | compatible part 4 Cubic bone 5 1st metatarsal seed bone corresponding | compatible part 6 1st metatarsal seed bone 7 Shoe sole 8 The distance protrusion corresponding | compatible part 9 of shoes Cubic bone corresponding part 10 Sole first metatarsal bone corresponding part L Sole thickness corresponding to distance projection

Claims (4)

  A shoe sole configured to support a distance projection, a cubic bone, and a first metatarsal seed bone constituting a foot bone in a shoe sole to be mounted in a shoe.   In the shoe sole, the hardness of the material corresponding to the distance projection, the portion corresponding to the cubic bone, and the portion corresponding to the first metatarsal seed bone is made larger than the hardness of the material of the remaining portion. The shoe sole according to claim 1, wherein the shoe sole supports the distance projection, the cubic bone, and the first metatarsal seed bone.   The shoe sole according to claim 1 or 2, wherein a design having a predetermined shape is formed on the shoe sole.   The shoe sole according to claim 3, wherein the design is cylindrical.

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