JP3822349B2 - Insoles with arch pads - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an insole for shoes, and more particularly to an insole having an arch pad integrally for reinforcing an arch of a foot.
[0002]
[Prior art]
Conventionally, for the purpose of alleviating gait disturbance due to a decrease in the arch of the foot, or recovery and prevention of the decrease in the arch, for example, an elderly person, a sportsman, a person with a decreased arch, a person with a tendency to decrease, a person with a risk of decrease, a foot, It has been proposed to use an arch pad directly on an insole or under an insole in a person having a pain in a knee or a hip joint.
FIG. 1 shows a conventional arch pad 10 described in Japanese Utility Model Laid-Open No. 6-23515, in which a pad 10 in which a horizontal arch pad 1, an inner vertical arch pad 2, and an outer arch pad 3 are integrated is used. . In other words, a flat fabric 12 having a shape that almost completely covers the lateral arch and vertical arch (inner and outer) portions of the sole and a rounded corner is formed on the back surface of the fabric 12. The viscoelastic polyurethane resin pad 11 is composed of an adhesive viscoelastic polyurethane resin pad 11. The viscoelastic polyurethane resin pad 11 is a dual-axis arch pad having a convex lens-like curved surface facing downward. This arch pad 10 is an arch pad that can be easily used by anyone and that integrates three types of pads that do not require positioning.
[0003]
[Problems to be solved by the invention]
However, since the conventional arch pad 10 shown in FIG. 1 only covers almost the position corresponding to the arch, even if it is worn using the adhesiveness of the viscoelastic body without restriction before and after, There is a defect that shifts due to walking or exercise, and there is a defect that the original effect cannot be fully exhibited.
Further, the conventional arch pad has been devised mainly for the purpose of alleviating gait obstacles, or recovering and preventing arch degradation, but is not much considered in preventing obstacles during running. Accordingly, the present invention provides a shoe insole having an arch pad that is effective at the same time for maintaining the function of the case or preventing the obstacle around the heel of the foot.
In particular, the present invention allows the toes to bend freely without being constrained by the pad and does not impair the motor function. In addition, the back arch can be effectively supported and the stepping of the thumb is enhanced. Providing a shoe insole that enables efficient protrusion.
[0004]
[Means for Solving the Problems]
The present invention has a contour of the sole that extends from the rear end of the buttocks to a portion where the foot width in the vicinity of the front edge portion of the middle foot portion is narrowed, and each of the lateral arch, the inner vertical arch, and the outer vertical arch portion of the sole. the corresponding parts, the transverse arch pad portion convex in loose bottom, possess together at least one of the medial longitudinal arch pad portion and an outer longitudinal arch pad portion, front edge of the pad, the second metatarsal The conventional problem is solved by an insole made of an elastic or viscoelastic pad made of rubber, EVA, polyurethane or the like, having a portion protruding forward between the portion and the third middle foot portion .
The above-mentioned shoe insole can be used as it is, but when using a viscoelastic body, a plane having a contour of a sole that preferably extends from the rear end of the buttocks to the middle foot, preferably further to a portion where the foot width is narrowed. Adhesive support (in this document, fabric, foamed elastic plastic, non-woven fabric, or synthetic leather is referred to as fabric).
The front edge of the pad is forward from the inside of the front edge of the pad through the inner arcuate portion and between the second and third metatarsals (ie, between the second and third metatarsal heads). It is desirable to determine that it protrudes from the front edge and then retracts from the outer edge arcuate portion and is connected to the outside of the front edge. In this embodiment, first, the toes are not restrained by the pad and can be flexed freely, so that the motor function is not impaired, and the obstacle caused by the pad is prevented. In addition, by providing a midfoot protrusion on the front edge of the pad, it is possible to effectively support the lateral arch of the sole, and to enhance the stepping of the thumb, enabling efficient protrusion. .
Further, when covering the entire sole, it is desirable to increase the thickness of the periphery of the heel so as to support the periphery of the heel including the case of partially covering the sole. Since the heel is embraced by the insole, stability (so-called heel hold) is improved, and it is possible to support and protect the foot not only during walking but also during walking, and absorb the shock at the time of grounding to prevent foot injury .
Further, by providing a raised portion protruding inward from the thick portion of the outer edge of the pad at a portion corresponding to the outer arch, the outer vertical arch can be effectively supported. In addition, this portion facilitates weight transfer from the outside of the sole toward the thumb when touching the heel, and the little finger is easily opened naturally, and the weight support when the toe is touched is stabilized.
[0005]
The elastic or viscoelastic pad in the present invention (or even fabric) extends to the foot part having a width narrower in the midfoot from the heel portion, there is no possibility that the position of the arch pad is shifted by walking, reduction in the arch of the foot In order to alleviate the gait disturbance due to, or to recover and prevent arch degradation, it can be used simply by laying the arch pad directly on the insole of the shoe.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to FIG . In the following examples, an example in which a viscoelastic pad is supported on the back surface of the fabric will be described. Fabric is not essential, but should be used when using viscoelastic pads. In the embodiment, a viscoelastic body is used as the pad material. However, an elastic body such as EVA, rubber, or other elastomer may be used .
[0007]
Examples of the material that can be used for the material of the pad 11 in the present invention include elastic materials such as known elastomers such as viscoelastic polyurethane, EVA and natural rubber described in JP-B-62-26330 and JP-A-61-19618. A suitable elastic body or viscoelastic body such as a body can be selected.
[0008]
The arch pad of the present invention is easy to manufacture. For example, according to the method described in Japanese Utility Model Laid-Open No. Hei 6-23515, a viscoelastic raw material, a lower mold having a molding cavity having an accurate thickness distribution, and a flat surface Using a molding machine composed of an upper mold having a shaped bottom surface, a predetermined amount of a pre-weighed amount of raw material is charged into a molding cavity, a cloth 32 is placed thereon, the upper and lower molds are closed, and the mold is heated to a predetermined temperature. The temperature is raised to a predetermined time. Thereby, bridge | crosslinking occurs and the insole with a pad which the desired viscoelastic pad 31 and the fabric 32 integrated completely is obtained.
[0009]
FIG. 2 shows an embodiment of the present invention. In this example, a fabric is used, but the fabric is not essential. For example, it is not necessary when the pad is made of an elastic body. However, in this example, since a viscoelastic body is used for the pad, it is covered with a cloth. The insole 30 in this example does not cover the entire sole, and when inserted from the heel to the vicinity of the middle foot, preferably into the shoe, it is restrained by the inner wall of the shoe and prevented from moving so that it moves forward from the heel. And a viscoelastic pad 31 which is formed to be slightly smaller than the contour thereof and is integrally fixed to the bottom surface thereof. Since the pad 31 extending from the heel to the position where the foot width in the vicinity of the middle foot is reduced, the heel and the left and right side portions are restrained, so that a sufficient positioning force can be obtained. The pad 31 has an inner vertical arch pad portion 34, an outer vertical arch pad portion 35, and a horizontal arch pad portion 33. In this example, the thickness distribution of the pad 31 is indicated by contour lines. The numbers in the circles indicate that the height increases in order, not the actual numbers.
As shown, the front edge of the pad extends from the inner front edge 37 of the pad through the inner arcuate portion 38 and between the second and third metatarsals (ie, the second and third metatarsal heads). The middle foot projecting part 39 is formed by projecting forward toward the front edge of the front edge part 41 and then connected to the front edge part outer side 41 via the front edge outer arcuate part 40.
In this form, the toes are not restrained by the pad and can be bent freely, so that the motor function is not impaired, and the obstacle caused by the pad is prevented. In addition, by providing a midfoot protrusion on the front edge of the pad, it is possible to effectively support the lateral arch of the sole, and to enhance the stepping of the thumb, enabling efficient protrusion. .
Also, if the wall thickness around the heel is increased as shown in 36 in FIG. 2 , the heel is embraced by the insole, so stability (so-called heel hold) is improved and the foot is supported and protected not only during walking but also during walking. Can prevent the failure.
Furthermore, by providing a raised portion protruding inward from the thick portion of the outer edge of the pad at a portion near the ridge of the outer vertical arch pad portion 35, the outer vertical arch can be effectively supported. In addition, this portion facilitates weight transfer from the outside of the sole toward the thumb when touching the heel, and the little finger is easily opened naturally, and the weight support when the toe is touched is stabilized.
[0010]
【The invention's effect】
As described above, unlike the conventional arch pad, the insole of the present invention has an advantage that the positioning of the arch portion can be achieved easily and stably. In addition, if a viscoelastic pad is used, it exhibits weak adhesiveness and is thus easily fixed on the insole of the shoe. Therefore, anyone can easily use the arch pad of the present invention. According to the structure of the present invention, the manufacture of the arch pad is easy and suitable for mass production. Note that if you have a set of typical pads designed to fit any patient, the best effect can be achieved with a few additional insoles if the doctor chooses the most appropriate insole.
In the pad of the form extending from the buttocks to the vicinity of the middle foot part, it projects forward from the inside of the front edge part of the pad through the inner arcuate part between the second middle foot part and the third middle foot part, and then from there Since it is determined to be retracted through the front edge outer arc portion and connected to the outer front edge portion, the toes can be freely bent without being constrained by the pad, so that the motor function is not impaired, and the pad is prevented from being damaged. In addition, by providing a midfoot protrusion on the front edge of the pad, it is possible to effectively support the lateral arch of the sole, and to enhance the stepping of the thumb, enabling efficient protrusion. .
In addition, by increasing the thickness of the periphery of the heel so as to support the area around the heel, the heel is embraced by the insole, increasing the support stability, supporting and protecting the foot not only during walking but also during running It can absorb the impact of time and prevent foot injury. Further, by providing a raised portion protruding inward from the thick portion of the outer edge of the pad at a portion corresponding to the outer arch, the outer vertical arch can be effectively supported.
In addition, this portion facilitates weight transfer from the outside of the sole toward the thumb when touching the heel, and the little finger is easily opened naturally, and the weight support when the toe is touched is stabilized.
[Brief description of the drawings]
FIG. 1 is a bottom view of a conventional arch pad.
FIG. 2 is a bottom view of a shoe insole according to the present invention and shows a relative relationship with a sole.
[Explanation of symbols]
30 Insole 31 Elastic pad 32 Cloth 33 Horizontal arch pad 34 Inner vertical arch pad 35 Outer vertical arch pad 36 Thick part 37 around the heel 37 Front edge part of pad 38 Inner arcuate part 39 of front edge Middle leg protrusion of front edge Part 40 front edge outside arcuate part 41 front edge outside

Claims (2)

It has a contour of the sole that extends from the rear end of the buttocks to a portion where the foot width in the vicinity of the middle foot portion becomes narrower, and it is loose on the portions corresponding to the lateral arch, inner longitudinal arch and outer longitudinal arch portion of the sole. At least one of a downwardly projecting horizontal arch pad portion, an inner vertical arch pad portion, and an outer vertical arch pad portion is integrally formed, and the front edge portion of the pad has a second middle foot portion and a third middle foot portion. A shoe insole consisting of an elastic or viscoelastic pad having a portion protruding between . The front edge of the pad is connected to the projecting portion from the inside of the front edge of the pad through the inner arcuate portion, and then retracted from there through the outer edge of the front edge and connected to the outer side of the front edge. The insole for shoes according to claim 1 defined in 1.

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