JPH11226042A - Insole with arch pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contribute to the maintenance of functions or the prevention of a fault and to be effective for maintaining the periphery of a heel part by consisting of an elastic or viscoelastic pad provided with the contour of the whole sole and integrally provided with at least one of a horizontal arch pad part in the state of projecting downward and an inner/outer vertical arch pad part at a part equivalent to the horizontal arch, the inner/outer vertical arch parts of a sole. SOLUTION: The viscoelastic pad 21 is provided with some arch pads forming arcs gently projecting downward. These parts are at least one of an inner vertical arch pad part 24, an outer vertical arch pad part and a horizontal arch pad part 23. In general, the inner vertical arch part and the horizontal arch part are partially overlapped and are provided with a part consisting of a common part. This insole 20 is used by inserting to the middle sole of a shoes by making the part of the pad 21 a lower side. At the time of walking in this state, the arch pad is bent to be nearly adhered to the bottom surface of the arch. Consequently, it makes no trouble even if a side in contact with a sole is curved along the arch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to insoles for shoes,
More particularly, the present invention relates to an insole having an arch pad for reinforcing a foot arch.

[0002]

2. Description of the Related Art Conventionally, in order to alleviate a walking disorder due to a decrease in a foot arch or to recover and prevent a decrease in an arch, for example, an elderly person, a sportsman, or a person with a reduced arch,
It has been suggested that arch pads are placed directly on the insole of the shoe, or used under the insole, for people who are on the decline, those who are at risk of falling, those who have pain in their feet, knees or hips. ing. Figure 1 shows the actual construction of Hei 6-6351.
5 shows a conventional arch pad 10 described in No. 5, wherein a pad 10 in which a horizontal axis arch pad 1, an inner vertical axis arch pad 2, and an outer arch pad 3 are integrated is used. That is, a planar fabric 12 having a shape that almost completely covers the horizontal arch and the vertical arch (inside and outside) of the sole and has a contour with rounded corners, and is integrally formed on the back surface of the fabric 12. Adhesive viscoelastic polyurethane resin pad 1
The viscoelastic polyurethane resin pad 11 is a double-shaft arch pad having a convex lens-shaped curved surface facing downward. This arch pad 10 can be easily used by anyone, and is an arch pad in which three types of pads that do not require respective positioning are integrated.

[0003]

However, since the conventional arch pad 10 shown in FIG. 1 only covers almost only the position corresponding to the arch, there is no restriction before and after the arch pad 10 and the adhesiveness of the viscoelastic body Even if you wear using
There is a defect that it is displaced by walking or exercise, and there is a defect that the original function and effect cannot be sufficiently exhibited. Further, the conventional arch pad has been mainly devised for alleviation of a walking disorder or recovery and prevention of a fall of an arch, but little attention has been given to prevention of a running obstacle. Therefore,
The present invention provides an arch pad that is effective at the same time as maintaining the periphery of the heel of the foot so as to help maintain the function or prevent obstacles in such a case.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a downwardly convex lens-like lateral surface having an area that spans the sole of the foot and corresponding to the lateral arch, the medial longitudinal arch, and the lateral longitudinal arch, respectively. A conventional problem is solved by a shoe insole made of an elastic or viscoelastic pad such as rubber, EVA, polyurethane or the like integrally having at least one of an arch pad portion, an inner vertical arch pad portion and an outer vertical arch pad portion. Although the above shoe insole can be used as it is, when a viscoelastic body is used, it is preferable to use a flat fabric having the contour of the entire sole (in this document, fabric, foamed elastic plastic, nonwoven fabric, or synthetic leather as a representative). We call it cloth)
Adhesive support.

[0005] The present invention also has a sole profile extending from the rear end of the heel portion to the vicinity of the front edge of the midfoot portion, and preferably to a portion where the width of the foot is further reduced. An elastic or viscoelastic body having at least one of a gently downwardly projecting horizontal arch pad portion, an inner vertical arch pad portion, and an outer vertical arch pad portion corresponding to portions corresponding to the arch and the outer vertical arch portion, respectively. The conventional problem is solved by an insole composed of an elastic pad. The above-mentioned shoe insole can be used as it is, but when using a viscoelastic body, preferably a flat surface having a contour of a sole extending from the rear end of the heel to the middle foot, preferably to a portion where the width of the foot further narrows. Adhesively supported on a cloth. In this embodiment, from the inside of the front edge portion of the pad, through the medial arc portion, toward the front between the second metatarsal portion and the third metatarsal portion (that is, between the second and third metatarsal heads). It is desirable to define a protruding portion, from which it then retracts through the leading edge outer arc and joins the leading edge outside. In this embodiment, the toes can be freely bent without being restrained by the pad, so that the motor function is not impaired and the pad is prevented from being damaged. In addition, by providing the middle foot projection on the front edge of the pad, it is possible to effectively support the lateral arch of the sole, and to increase the depression of the thumb,
Enables efficient drilling. Further, when covering the entire sole, it is desirable to increase the thickness of the peripheral part of the heel so as to support around the heel part, including covering a part of the sole. Because the heel is embraced by the insole, stability (so-called heel hold) is improved, and it supports and protects the foot not only when walking but also when walking, and can absorb the impact of touching the ground and prevent obstacles to the foot . Further, by providing a protruding 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 to the thumb when the heel touches the ground, facilitates the natural opening of the little finger, and stabilizes the weight support of the toe when the foot touches the ground.

In the present invention, an elastic or viscoelastic pad (or even cloth) covers the entire sole, or at least extends from the heel to the midfoot, and more preferably to the part where the width of the foot is narrowed. There is no risk of misalignment of the arch pad, and it can be used simply by laying the arch pad directly on the midsole of the shoe to alleviate the walking difficulty due to the lowered arch of the foot, or to recover and prevent the arch deterioration. .

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
In the following embodiments, an example in which a viscoelastic pad is supported on the back surface of a fabric will be described. Fabric is not essential, but it is better to use it if a viscoelastic pad is used. In the embodiment, the viscoelastic body is used as the material of the pad. However, an elastic body such as EVA, rubber, and other elastomers may be used. First, reference is made to FIGS. FIG. 2 shows the insole 20 for the right foot as viewed from the back side of the foot, and includes a viscoelastic pad 21 and the fabric 12 bonded to the surface thereof. The fabric 12 need not always be used. Viscoelastic pad 2
1 has several arch pads in the shape of a gentle arc that is convex downward as shown. These portions are at least one of the inner vertical arch pad portion 24, the outer vertical arch pad portion (not shown), and the horizontal arch pad portion 23. Generally, the inner vertical arch part and the horizontal arch part partially overlap,
It has a part composed of a common part. The viscoelastic pad 21 shown in FIGS. 2 and 3 is mainly configured to have an inner vertical arch and a horizontal arch. The outer longitudinal arch is not set too high in this example. FIG. 2 shows an example of the thickness distribution of the viscoelastic pad 21 of each part by a number with a decimal point. The unit is mm and the measurement points are indicated by black dots. Further, in order to continuously show the thickness distribution in the width direction, the thickness of the measurement point was plotted by the thickness in the vertical direction in the figure. FIG. 3 is a cross-sectional view taken along line AA of FIG. 2 and shows a thickness distribution. Such a complicated distribution of thickness can be easily achieved by designing a molding die.

The materials which can be used as the material of the pad 11 in the present invention include, for example, viscoelastic polyurethanes described in JP-B-62-26330 and JP-A-61-19618.
A suitable elastic body or viscoelastic body such as an elastic body such as a known elastomer such as VA and natural rubber can be selected.

To use the insole 20 of the present invention, the viscoelastic pad 21 is inserted into the shoe with the viscoelastic pad 21 facing down. When walking in this state, the arch pad bends and comes into close contact with the arch bottom surface. Therefore, there is no problem even if the side contacting the sole is not curved along the arch. When the insole 20 is placed in the shoe, the entire circumference is restrained by the inner wall of the shoe, so that the insole 20 is not easily displaced, and the arch pad portion can be fixed at a designed position. On the other hand, since the fabric 22 is in contact with the foot, a feeling similar to that of a normal insole is obtained.

The arch pad of the present invention is easy to manufacture. For example, according to the method described in Japanese Utility Model Application Laid-open No. Hei 6-23515, a raw material for viscoelasticity is prepared by lowering a mold having a molding cavity having an accurate thickness distribution. And a molding machine consisting of an upper mold having a flat bottom surface, a predetermined amount of raw material measured in advance is charged into the molding cavity, a cloth 22 is placed thereon, the upper and lower molds are closed, and the mold is closed. Is heated to a predetermined temperature and held for a predetermined time. As a result, crosslinking occurs, and the desired viscoelastic pad 2
A padded insole is obtained in which 1 and the fabric 22 are completely integrated.

FIG. 4 shows another embodiment of the present invention. Also in this example, the fabric is not indispensable and is unnecessary when the pad is made of an elastic material. However, in this example, since the viscoelastic body is used for the pad, the pad is covered with the cloth. The insole 30 in this example does not cover the entire sole, but is moved forward from the heel so as to be restrained by the inner wall of the shoe to prevent movement when the shoe is inserted from the heel to the vicinity of the midfoot, preferably in the shoe. And a viscoelastic pad 31 formed on the bottom surface of the flat cloth 32 and extending slightly to the point where the width of the foot immediately before the finger portion begins to narrow, and formed slightly smaller than the contour thereof and integrally fixed thereto. Since the pad 31 extending from the heel to the vicinity of the middle foot is restricted on the heel and the left and right sides, a sufficient positioning force can be obtained by itself. 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 shown by contour lines. The numbers described in the circles indicate that the height increases in order, and do not indicate actual numbers. As shown, the leading edge of the pad extends between the second and third metatarsals (ie, the second and third metatarsal heads) from inside the leading edge 37 of the pad via an inner arc 38. ) To form a middle foot protrusion 39, from which it is connected to a front edge outside 41 via a front edge outside arc-shaped portion 40. In this mode, the toes can be freely bent without being restrained by the pad, so that the motor function is not impaired, and the obstacle due to the pad is prevented. In addition, by providing a midfoot projection on the front edge of the pad, it is possible to effectively support the lateral arch of the sole, and to increase the depth of the thumb, enabling efficient overturning. . In addition, when the thickness around the heel is increased as shown in FIG. 4, the heel is embraced by the insole, so that the stability (so-called heel hold) is improved, and the foot is supported and protected not only during walking but also during walking. Can prevent failure. Furthermore, by providing a raised portion protruding inward from the thick portion of the outer edge of the pad near the heel 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 to the thumb when the heel touches the ground, facilitates the natural opening of the little finger, and stabilizes the weight support of the toe when the foot touches the ground. Other effects are shown in Figure 2
3 is the same as the example.

[0012]

As described above, the insole according to the present invention has an advantage that the positioning of the arch portion can be easily and stably achieved, unlike the conventional arch pad. In addition, if a viscoelastic pad is used, the pad exhibits low tackiness, so that the pad easily adheres to the midsole of the shoe. Therefore, the arch pad of the present invention can be easily used by anyone. According to the structure of the present invention, the manufacture of the arch pad is easy and suitable for mass production. It should be noted that with a set of typical pads designed to fit any patient, the best effect can be achieved with a small number of insoles if the physician selects the most appropriate insole.
In the pad extending from the heel to the vicinity of the middle foot, the second middle foot and the third middle foot are formed from the inside of the front edge of the pad through the inner arc-shaped portion.
Protruded forward between the middle feet, then retracted through the front edge outer arc and connected to the outside of the front edge, so that the toes flex freely without being restrained by the pad It is possible to prevent impairment of motor function and prevent damage by pad. In addition, by providing a midfoot projection on the front edge of the pad, it is possible to effectively support the lateral arch of the sole, and to increase the depth of the thumb, enabling efficient overturning. . In addition, by increasing the thickness of the periphery of the heel so as to support the periphery of the heel, the heel is embraced by the insole, increasing the support stability, supporting and protecting the foot not only during walking but also running, and touching the ground The shock of the time can be absorbed and the obstacle of the foot can be prevented. Further, by providing a protruding 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 to the thumb when the heel touches the ground, facilitates the natural opening of the little finger, and stabilizes the weight support of the toe when the foot touches the ground.

[Brief description of the drawings]

FIG. 1 is a bottom view of a conventional arch pad.

FIG. 2 is a bottom view of the shoe insole according to the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a bottom view of a shoe insole according to another embodiment of the present invention, showing a relative relationship with a sole.

[Explanation of symbols]

 20, 30 Shoe insole 21, 31 Viscoelastic pad 22, 32 Cloth 23, 33 Horizontal arch pad 24, 34 Inner vertical arch pad 35 Outer vertical arch pad 36 Thickness around heel 37 Inner front edge of pad 38 inside arc portion of front edge 39 middle foot protrusion of front edge 40 front edge outside arc portion 41 front edge outside

Claims (11)

[Claims] 1. A gently downwardly projecting horizontal arch pad portion having a contour of the entire sole and corresponding to portions corresponding to a horizontal arch, an inner vertical arch, and an outer vertical arch of the sole, respectively. An insole comprising an elastic or viscoelastic pad integrally having at least one of an inner vertical arch pad portion and an outer vertical arch pad portion. 2. A planar fabric having a contour of the entire sole,
At least one of a gently downwardly projecting horizontal arch pad portion, an inner vertical arch pad portion, and an outer vertical arch pad portion corresponding to portions corresponding to the horizontal arch, the inner vertical arch, and the outer vertical arch portion of the sole, respectively. An insole with an elastic or viscoelastic pad that has one piece and is adhered to the entire back surface of the fabric. 3. The insole according to claim 1, wherein at least two of the horizontal arch pad portion, the inner vertical arch pad portion and the outer vertical arch pad portion are integrally formed. 4. The shoe insole according to claim 1, wherein a horizontal arch pad portion, an inner vertical arch pad portion, and an outer vertical arch pad portion are integrally formed. 5. A sole having a contour extending from the rear end of the heel to the vicinity of the middle foot, and corresponding to portions corresponding to the horizontal arch, the medial vertical arch, and the external vertical arch of the sole, respectively.
An insole composed of an elastic or viscoelastic pad integrally having at least one of a gentle downwardly convex horizontal arch pad, an inner vertical arch pad, and an outer vertical arch pad. 6. A planar fabric having a sole profile extending from the rear end of the heel to the vicinity of the front midfoot, and portions corresponding to the horizontal arch, the medial vertical arch, and the external vertical arch of the sole. , Which has at least one of a gently downwardly projecting horizontal arch pad portion, an inner vertical arch pad portion, and an outer vertical arch pad portion, respectively, and is adhered to the entire back surface of the fabric. Or a shoe insole consisting of a viscoelastic pad. 7. The insole according to claim 5, wherein at least two of a horizontal arch pad portion, an inner vertical arch pad portion and an outer vertical arch pad portion are integrally formed. 8. The insole according to claim 5, wherein the horizontal arch pad portion, the inner vertical arch pad portion and the outer vertical arch pad portion are integrally formed. 9. The front edge of the pad has a portion projecting between a second metatarsal portion and a third metatarsal portion.
Either shoe insole. 10. The insole according to claim 1, wherein the pad has a thick portion around the heel. 11. The pad according to claim 1, wherein a portion of the outer arch portion adjacent to the heel portion of the pad has a portion protruding inward.
One of the 10 insoles.