JP3225827U - O leg prevention insole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insole for preventing O-legs, which guides weight transfer from the outside to the inside of the foot. SOLUTION: The main body is an insole molded from a foamed ethylene vinyl acetate copolymer material or a foamed polyurethane material, and a convex shape having a shape supporting a vertical arch of a foot is provided on an inner side 2 corresponding to an arch part on a surface of the insole. The convex portion 5 for supporting the lateral arch of the foot is provided in the central portion, the shallow depression 7 is provided in the ball portion 6 of the thumb, and the cup-shaped portion 13 is provided from the heel portion to the outer side portion of the insole central portion 4 The reinforcing material 11 made of a hard material was extended from the heel portion of the outer surface 8 on the back surface of the insole to the center of the foot. Further, the reinforcing member 11 has a thickness in the central portion so that the reinforcing member 11 has an angle from the outer surface 8 of the insole toward the inner side along the inner surface of the cup of the cup-shaped portion 13. [Selection diagram] Fig. 1

Description

  The present invention relates to an insole for O-leg prevention for the elderly or adults.

  In an aging society, it is essential to improve the quality of life (QOL) of the elderly and improve their health in order to suppress an increase in social welfare expenses. When considering the quality of life of the elderly, what is particularly important is maintaining the health of the legs and hips, and the problem is the pain caused by the weakening of the knees of the elderly. A major cause is knee osteoarthritis, which is a major cause of knee pain, especially in elderly women.

  As osteoarthritis of the knee progresses, daily pains such as climbing up and down stairs, unable to sit straight, and unable to run due to knee pain are hindered. When it gets worse, walking itself becomes harder, which leads to a decrease in QOL. The biggest cause of osteoarthritis of the knee is the O-leg, and if the O-leg continues for a long time, the burden on the inside of the knee increases when standing or walking, and the articular cartilage is partially worn away, and the bones Pain appears as they rub against each other. The result is osteoarthritis of the knee. In other words, when considering the problem of the knee joint of the elderly, it is essential to address the problem of the O-leg, and the development of products that can be expected to have the effect of preventing and improving it is of social significance. It is.

  When considering prevention and improvement of the O-leg, one of the major causes is the “outside center of gravity” in which the center of gravity is inclined toward the little finger of the foot. The proper way to stand and walk is the “inside center of gravity” with the center of gravity applied to the inside, and it is necessary to maintain a posture that stands upright as if one axis passed through the body.

  The outer center of gravity can easily become tired due to excessive strain on both sides of the body, or the pelvis can spread and the thighs can appear to protrude outside. This is a state called an O-leg, and when the outer center of gravity continues, the inside of the knee joint is rubbed and deformed, resulting in osteoarthritis of the knee.

  Until now, many insoles have been proposed for the purpose of stabilizing the posture during walking and facilitating walking. For example, the insole of Patent Literature 1 has an insole body in which the inside of the toe is formed to have a lower height than the outside, and the surface of the toe is inclined downward from the outside toward the inside. It is.

  Further, the insole of Patent Document 2 is formed of a flat elastic material, and forms a concave portion and various raised portions on a surface in contact with the sole of the foot, and induces a tilting movement to smoothly move the center of gravity during walking. The goal is to ensure stable walking with less fatigue.

  In addition, the insole of Patent Document 3 is provided with a rising portion from the middle foot portion to the heel portion to form a wavy reinforcing portion, and the shape of the reinforcing portion is a shape considering the foot bone shape and the movement curve of the center of gravity. The purpose is to secure stable walking and running at the same time and reduce the force received from the ground.

  Further, the insole of Patent Literature 4 is a shoe sole including an insole that can prevent the O-legs of the elderly and promote the tilting walking, and has a gradually thinner slope from the heel to the stepping portion. It promotes gait walking, maintains walking balance, prevents stumbling and falling outwards, and provides smooth grounding of the foot behind the heel and kicking motion at the toe, which is early in walking. It is assumed that ground stability can be achieved.

Japanese Patent No. 6516808 Japanese Patent No. 5815172 Japanese Patent No. 4033647 Japanese Patent No. 3874982

  As described above, in order to improve the outer center of gravity, it is necessary to change to a state in which the center of gravity is applied to the toe of the toe, that is, to change to the inner center of gravity. The muscles inside the thighs are used to balance the way of standing and walking, and the gap between both knees is closed, and the O leg is corrected.

  The present invention has been made in consideration of such problems, and guides the center of gravity leaning to the outside of the foot to the inside when wearing shoes, and a structure in which the thumb joint of the foot is easily used due to the shape of the insole. By doing so, walking using the toes is promoted, and the center of gravity is applied to the toes during walking.

  In order to achieve the above object, the insole for preventing O-legs according to claim 1, the main body is molded of a foamed ethylene vinyl acetate copolymer material or a foamed polyurethane material, and the insole surface has an inside corresponding to an arch portion. A convex part that supports the vertical arch of the foot, a convex part that supports the horizontal arch of the foot is provided in the center, a shallow depression is provided in the thumb ball part, and the cup-shaped part is the foot from the heel part to the center part of the insole It extends to the outer part, and is characterized by a hard material reinforcement attached from the heel part of the outer surface of the insole back to the center of the foot.

  3. The insole for preventing O-legs according to claim 2, wherein the reinforcing material has an angle along the inner surface of the cup shape from the outer surface of the insole toward the inner side by thickening a central portion. And

  According to the present invention, a reinforcing member having a high hardness different from the insole body is attached to the back surface of the insole outside, and a difference in hardness is provided between the inside and the outside of the insole, so that the foot is gradually inclined inward when worn. Become like Also, by giving the reinforcing member a thickness and inclining from the outside to the inside, the center of gravity inclined to the outside of the foot is guided to the inside. At this time, by changing the hardness of the insole gradually, a natural inclination of the foot can be promoted. The inclination of the foot obtained by this action reduces the load on the inside of the knee of the wearer, and can be expected to be effective against knee disorders that may be caused by the O-leg due to aging or the like.

  Also, due to the inward inclination of the foot, the vertical arch of the inside of the foot is crushed due to the concentration of body pressure more than necessary and the concentration of weight on the thumb of the wearer may induce hallux valgus etc. In order to prevent concentration of body pressure due to tilting and to promote the distribution of body pressure, the inner arch is supported by providing a convex part (ridge) supporting the arch inside the foot, and obstacles due to concentration of weight on the thumb Can be prevented.

It is a top view of the insole of the right foot which shows the Example of this invention. It is a rear view of an insole. It is a right view of an insole. It is explanatory drawing of a reinforcement. FIG. 2 is an end view taken along line XX in FIG. 1.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. 1 to 5 show an insole for preventing O-legs according to an embodiment of the present invention. The insole body 1 is made of a foamed EVA (ethylene vinyl acetate copolymer) material or a foamed PU (polyurethane) material including a heel portion H. The insole surface A has a three-dimensional structure according to the shape of the sole, and the insole inside 2 corresponding to the arch is a raised convex portion 3 having a shape for supporting the vertical arch of the foot. The center part 4 of the insole is provided with a raised protrusion 5 for supporting the lateral arch structure of the foot. A recess 6 of 1 to 2 mm is provided in a portion 6 to which the thumb ball hits in front.

In addition, a hard TPU (thermoplastic polyurethane) material reinforcing material 11 is attached to the length from the heel portion 9 on the outer surface 8 side of the insole back surface B to the center 10 of the foot, so that the outer surface 8 of the insole is Hardness is reinforced (shaded portion in FIG. 2). The TPU material reinforcing material 11 extends not only to the insole back surface B, but also to the reinforcing portion 12 on the insole side surface that has been warped into a cup shape (shaded portion in FIG. 3).
The insole surface A of the present invention, that is, the wearing surface of the foot is parallel to the sole of the foot, and does not have a structure inclined by the attachment of the reinforcing material 11 on the insole back surface B. In short, the structure is such that it receives the pressure of body weight when worn and gradually inwards due to the difference in hardness of the material of the insole, guiding the center of gravity leaning outward to the inside of the foot It is.

  The insole is originally intended to stabilize the heel portion, and generally, the raised cup-shaped portion 13 which is shaped to support only the heel portion is replaced by the length of the insole center portion 4 only at the outside of the foot. 4a, and the reinforcing material 11 made of a hard TPU material attached to the insole back surface B is also extended to its length and reinforced (see the hatched portion in FIG. 3). FIG. 4 is an explanatory view of the reinforcing member 11 alone. Also, the shape of the reinforcing member 11 is not uniform in thickness, but is provided with a thickness 11b at the central portion 11a so as to extend from the insole outer surface 8 toward the inside at a constant angle, that is, along the cup-shaped inner surface 11c. An angle is provided (see the hatched portion in FIG. 5).

Next, the operation of the present invention will be described.
When the shoes with the insole laid in the present invention are worn, the pressure of the sole disperses to the entire surface of the insole because the sole first comes into horizontal contact with the insole of the three-dimensional structure adapted to the sole shape. Thereafter, when the weight is applied as pressure on the foot, as the insole deforms due to the pressure, the difference in hardness of the material of the inner surface of the insole due to the effect of the reinforcing material 11 of the TPU material results in the insole surface A (the foot wearing surface). ) Inclines from the outside of the foot toward the inside. Thus, the center of gravity of the wearer is naturally guided from the outside of the foot to the inside.

  In addition, the effect of the reinforcement of the cup-shaped portion 13 extended to the center of the outer foot and the reinforcing material 11 of the TPU material on the back surface causes the wearer's foot, which is the outer center of gravity, to lean outward and to prevent Deviation to the outside can also be prevented from the side.

  Also, the insole inner 2 prevents the vertical arch inside the foot from being crushed by applying excessive pressure to the inside due to the center of gravity guided to the inside, so that a foot injury such as hallux valgus is not induced. Has a structure that supports the inner vertical arch by the raised convex portion 3.

  In addition, after the center of gravity is shifted to the inner side, the state where the center of gravity is applied to the thumb of the foot (inside center of gravity) is induced. Kicking and walking are encouraged.

  As described above, in the present invention, the aim is to bring an angle by the difference in hardness of the material of the insole, and the insole which can be in contact with the foot in parallel like a normal insole until the weight is applied With this, the entire sole of the foot can transmit pressure to the insole in parallel at the time of wearing, so that the body pressure can be evenly distributed, so that fatigue of the foot can be reduced. In addition, since the method of guiding to the inner center of gravity is to naturally guide the center of gravity to the inside by stepwise changes in hardness of the inside and outside of the insole and deformation of the insole due to body pressure, Unlike the one where the floor itself is inclined and the center of gravity is forcibly moved, a natural center of gravity can be guided inward.

DESCRIPTION OF SYMBOLS 1 Insole main body 2 Insole inside 3 Convex part 4 Center part of insole 4a Length of central part of insole 5 Convex part 6 Hitting ball of thumb 7 Depression 8 Outer side surface of insole 9 Heel part 10 Center of insole 11 Reinforcing material (TPU material)
11a Central part of reinforcement
11b Reinforcement thickness 11c Reinforcement cup-shaped inner surface 12 Insole side reinforcement 13 Insole cup-shaped portion A Insole surface B Insole back surface H Heel portion

Claims (2)

  The main body is an insole molded of a foamed ethylene vinyl acetate copolymer material or a foamed polyurethane material, and a convex portion 3 having a shape for supporting a vertical arch of a foot is provided on an inner side 2 corresponding to an arch portion on the insole surface. The central part is provided with a convex part 5 for supporting the lateral arch of the foot, the thumb ball part 6 is provided with a shallow depression 7, and the cup-shaped part 13 is extended from the heel part to the outer part of the foot in the center part of the insole. An insole for preventing O-legs, wherein a hard material reinforcing material 11 is attached from the heel portion 9 of the outer surface 8 on the back surface to the center 10 of the foot.   The said reinforcement material 11 was given the angle along the cup inner surface 11c of the said cup-shaped part 13 from the insole outer surface 8 inward by attaching thickness 11b to the center part 11a. The insole for O leg prevention described in the above.

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