JP3049696U - Shoe insole with arch pad - Google Patents

Abstract

(57) [Summary] [Problem] Since a conventional arch pad almost only covers a position corresponding to an arch, even if it is worn by utilizing the adhesiveness of the viscoelastic body itself, it can walk or exercise. There is a defect that it shifts, and the original function and effect cannot be sufficiently exhibited. SOLUTION: A planar fabric having an outline of an 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. A shoe insole comprising: a viscoelastic polyurethane resin pad integrally formed with one piece and adhered to the entire back surface of the cloth.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a shoe insole, and more particularly, to an insole having an arch pad for reinforcing a foot arch.

[0002]

[Prior art]

 For the purpose of alleviating gait disturbances due to lowering the arch of the foot, or recovering and preventing the lowering of the arch, for example, elderly people, sportsmen and other people with a low arch, people with a slight decrease, people with a risk of decreasing, and feet It has been proposed to use an arch pad directly on a shoe insole or under an insole for a person having pain in a knee or a hip joint. FIG. 1 shows a conventional arch pad 10 described in Japanese Utility Model Application Laid-Open No. Hei 6-23515. 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 flat fabric 12 having a shape that almost completely covers the horizontal and vertical arches (inside and outside) of the sole and having a rounded corner is formed integrally with the back surface of the fabric 12. The viscoelastic polyurethane resin pad 11 is a double-shaft arch pad having a convex lens-like curved surface facing downward. The arch pad 10 can be easily used by anyone, and is an arch pad in which three types of pads that do not require positioning are integrated.

[0003]

[Problems to be solved by the invention]

 However, since the conventional arch pad 10 shown in FIG. 1 only covers almost only the position corresponding to the arch, even if it is worn by utilizing the adhesiveness of the viscoelastic body itself, it is difficult to walk or exercise. There is a defect that it shifts, and the original function and effect cannot be fully exhibited.

[0004]

Means for Solving the Problems The present invention relates to a flat fabric having a contour of the entire sole (hereinafter referred to as a fabric for representing a fabric, a foamed elastic plastic, a nonwoven fabric, or a synthetic leather) and a sole. At least one of a downward convex lens-shaped horizontal arch pad, inner vertical arch pad, and outer vertical arch pad corresponding to portions corresponding to the horizontal arch, the inner vertical arch, and the outer vertical arch, respectively. The conventional problem is solved by a shoe insole composed of a viscoelastic polyurethane resin pad integrally provided and adhered to the entire back surface of the fabric.

[0005] The present invention also provides a planar fabric having a contour of a sole extending from a rear end of a heel part to a part where a foot width of a front part is reduced, and a lateral arch, an inner vertical arch and an outer vertical arch of the sole. A gently downwardly projecting horizontal arch pad portion, an inner vertical arch pad portion, and an outer vertical arch pad portion, each integrally corresponding to a portion corresponding to a portion of The conventional problem is solved by a shoe insole consisting of a viscoelastic polyurethane resin pad adhered to the whole.

[0006]

[Action]

 In the present invention, not only the cloth on the plane but also the viscoelastic polyurethane resin pad covers the entire sole, or at least extends to the part where the width of the front part is narrow, so that the position of the arch pad may be shifted by walking. It can be used simply by laying the arch pad directly on the midsole of the shoe to alleviate gait impairment due to the lowering of the arch of the foot, or to recover and prevent the lowering of the arch. For

[0007]

[Embodiment of the invention]

 Hereinafter, the present invention will be described in detail. 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 comprises a viscoelastic polyurethane pad 21 and the fabric 12 bonded to the surface thereof. As shown, the viscoelastic polyurethane pad 21 has several arch pads that form a gentle arc that is convex downward. 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 and have a part composed of a common part. The viscoelastic polyurethane pad 21 shown in FIGS. 2 and 3 is mainly configured to have an inner vertical arch and a horizontal arch. The outer vertical arch is almost nonexistent in this example. FIG. 2 shows an example of the thickness distribution of the viscoelastic polyurethane 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. In order to continuously show the thickness distribution in the width direction, the thickness at the measurement point was plotted in the vertical direction in the figure. FIG. 3 is a sectional view taken along the line AA in FIG. 2 and shows a thickness distribution. Such a complicated distribution of thickness can be easily achieved by designing a molding die.

The viscoelastic polyurethane which can be used for the material of the viscoelastic polyurethane pad 11 in the present invention may be selected from any known materials, but is preferably a mixture of a high molecular weight polyol and a low molecular weight polyol. In addition, an ultra-low hardness polyurethane was produced by reacting a polyisocyanate under the condition of an excess of OH. For example, Japanese Patent Publication No. 62-26330 discloses poly (1,2-propylene glycol), N, A polyurethane elastomer obtained by reacting a blend of N, N ', N'-tetrakis (2-hydroxypropyl) ethylenediamine with at least one stoichiometric amount of aromatic isocyanate may be used. This viscoelastic polyurethane is a polyurethane elastomer having a low compression set and a slow recovery from compression, and is a material suitable for the purpose of the present invention. Further, in order to improve the energy absorption (impact attenuation) depending on temperature, a viscoelastic polyurethane described in JP-A-61-19618 to which a monohydric alcohol component is further added may be used. In this case, the polyol and isocyanate are reacted in equivalent amounts and do not contain excess hydroxy groups. In any case, the hardness is 0 to 30 according to JIS A, 30 is hard, 0 is soft and easily deformed by external force, but recovers its original shape within a few seconds when the force is removed.

In order to use the insole 20 of the present invention, the viscoelastic polyurethane pad 21 is inserted into the bottom of the shoe with the part thereof facing down. When walking in this state, the arch pad bends and comes into close contact with the bottom of the arch. Therefore, there is no problem even if the side in contact with the sole is not a curved line 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 the 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 can be obtained.

[0010] 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, the raw material for viscoelastic polyurethane is prepared by molding a raw material having a molded cavity having an accurate thickness distribution. Using a molding machine consisting of a mold and an upper mold having a flat bottom surface, a predetermined amount of raw material that has been measured in advance is charged into a molding cavity, and a cloth 22 is placed thereon. The upper and lower molds are closed, and the molds are heated to a predetermined temperature and held for a predetermined time. Thereby, cross-linking occurs, and a padded insole in which the desired viscoelastic polyurethane pad 21 and fabric 22 are completely integrated is obtained.

FIG. 4 shows another embodiment of the present invention. The insole 30 in this example does not cover the entire sole and extends forward from the heel so that when inserted into the shoe, it is restrained by the inner wall of the shoe to prevent movement. It consists of a planar fabric 32 extending to the point where it begins to narrow, and a viscoelastic polyurethane pad 31 formed on the bottom surface of the fabric slightly smaller than its contour and integrally fixed. The pad 31 has an inner vertical arch pad 34, an outer vertical arch pad 35, and a horizontal arch pad 33. In this example, the thickness distribution of the pad 31 is shown by contour lines. The number in the circle indicates that the height increases in order, and does not indicate the actual value. When the thickness around the heel is increased as shown in FIG. 36, the stability (so-called heel hold) is improved because the heel is embraced by the insole. Other effects of this example are the same as those of FIGS.

[0012]

[Effect of the invention]

 As described above, the insole of the present invention has an advantage that the positioning of the arch portion can be automatically achieved, unlike the conventional arch pad. In addition, since the viscoelastic polyurethane is applied to the part other than the arch part, the impact applied to the sole during walking is reduced. Further, since the viscoelastic polyurethane pad shows weak adhesiveness, it 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 production of the arch pad is easy and suitable for mass production. With a set of typical pads designed to fit any patient, a doctor can choose the most appropriate insole for maximum effectiveness with a small number of insoles. .

[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 the shoe insole according to another embodiment of the present invention.

[Explanation of symbols]

 20, 30 Shoe insole 21, 31 Viscoelastic polyurethane pad 22, 32 Fabric 23, 33 Horizontal arch pad 24, 34 Inner vertical arch pad 35 Outer vertical arch pad

Claims (8)

[Utility model registration claims] 1. 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. A shoe insole comprising: a viscoelastic polyurethane resin pad integrally formed with one piece and adhered to the entire back surface of the cloth. 2. The insole according to claim 1, 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. 3. The insole according to claim 1, wherein the insole has a horizontal arch pad portion, an inner vertical arch pad portion and an outer vertical arch pad portion. 4. The shoe insole according to claim 1, wherein the outer dimensions of the fabric are larger than the outer dimensions of the viscoelastic body. 5. A flat fabric having a sole profile extending from the rear end of the heel portion to a portion where the width of the front portion is narrowed, and corresponds to a horizontal arch, a medial vertical arch, and an external vertical arch of the sole. And 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, each of which corresponds to a corresponding portion, and is adhered to the entire back surface of the fabric. Insole consisting of a viscoelastic polyurethane resin pad. 6. 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. 7. 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. 8. The insole according to claim 5, wherein the outer dimensions of the fabric are larger than the outer dimensions of the viscoelastic body.