JPH0327444Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention relates to a shoe insole that is effective in treating and preventing athlete's foot due to the bactericidal action of copper ions.

<Prior art> Utility Model Publication No. 55-42727 discloses that copper is used on the surface of the insole.
Alternatively, it is known that a coating layer containing powder of the alloy is provided.

Furthermore, an insole in which a mesh made of copper wire is laid on the lower surface of a surface plate made of a breathable sheet is known from Japanese Utility Model Application Publication No. 13872/1983.

<Problems to be solved by the invention> In the above-mentioned Utility Model Publication No. 55-42727, the powder of copper or its alloy does not adhere to the surface of the insole as it is, so it is kneaded into an adhesive that hardens when it hardens and adheres as a layer. Therefore, only the copper powder exposed on the surface of the coating layer actually generates copper ions; most of the copper powder is trapped in the hardened layer of the adhesive, and the sterilizing effect is low considering the amount of copper powder used. is scarce.

Furthermore, in the method disclosed in Japanese Utility Model Application Publication No. 55-13872, it is time-consuming to knit the net with copper wires, and when it is laid on the underside of the breathable sheet, it becomes stiff and extremely uncomfortable to wear.

<Means for solving the problem> Therefore, the present invention interposes a thin layer made of copper or its alloy (hereinafter referred to as a thin copper layer) on the lower surface of the surface plate made of one or more layers of breathable sheets. The present invention is characterized in that a plastic covering layer is provided, and this covering layer is provided with a hole reaching the thin copper layer from the lower surface and a protrusion projecting downward from the lower surface.

<Function> In addition to acting on the sole of the foot through the top plate of the breathable sheet, the copper ions generated by the thin copper layer also pass through the holes in the plastic coating layer on the bottom of the top plate and into the gap between the upper surface of the sole maintained by the protrusions. It acts from the entire inside of the shoe to the surface of the foot.

The coating layer also prevents the thin copper layer from peeling off from the bottom surface of the top plate.

<Example> In each of the illustrated examples, 1 is a surface plate made of one or more air permeable sheets, 2 is a thin copper layer provided on the lower surface thereof, and 3 is a thin copper layer provided on the lower surface of the surface plate, A plastic coating layer covers the lower surface of the surface plate 1. Reference numeral 4 indicates a hole formed from the lower surface of the coating layer to reach the thin copper layer. Reference numeral 5 indicates a protrusion extending from the lower surface of the coating layer.

The breathable sheet constituting the surface plate 1 may be made of knitted or woven fabric, non-woven fabric, net material such as loofah or saran net, other natural or synthetic leather, natural or synthetic thin rubber plate with many pores, etc. Any material may be used as long as it is strong and flexible, and two or three pieces may be bonded together with adhesive, etc.
For example, a pile fabric such as a towel may be adhered to the upper surface of a thin rubber plate having holes formed by injection molding on the lower surface of a plastic covering layer with a thin copper layer interposed on the lower surface.

In addition, the plastic covering layer 3 is made of elastic synthetic resin such as soft vinyl chloride, EVA, polyethylene, thermoplastic polyurethane, etc. and has a thickness of about 0.2 to 1.5 mm so as not to impair the flexibility of the surface plate 1. . This coating layer 3 is applied to the surface plate 1 with a thin copper layer 2 interposed therebetween.
Laminated by injection molding on the bottom surface of the hole 4 and protrusion 5 at the same time.
Alternatively, it may be formed into a sheet having holes 4 and protrusions 5, cut to the same size as the outer shape of the surface plate 1, and fixed with an adhesive or the like. Note that the hole 4 only needs to be provided in the part that covers the thin copper layer 2, and the hole diameter should be approximately 1 to 1.
The distance between them may be about 3 mm, and the mutual spacing may be about 5 to 10 mm. On the other hand, the protrusions 5 are uniformly distributed over the entire lower surface of the coating layer 3 with a mutual interval of about 5 to 10 mm and a downward length of about 0.2 to 2.0 mm.

In the embodiment shown in FIGS. 1 and 2, a thin copper layer 2 is provided on the lower surface of the surface plate 1 by a thermal spraying method in which molten copper or its alloy is atomized by pressure air and sprayed at high velocity. This thermally sprayed thin copper layer 2 is porous, has a small coefficient of friction, and is wear resistant, with some of the fine copper particles biting into the gaps between the meshes and textures of the surface plate and becoming almost integrated with the surface plate. Although it has excellent properties, it has poor mechanical properties such as tensile strength and elongation, and has almost no toughness.

However, since the thermally sprayed thin copper layer 2 is covered with a plastic coating layer 3 that covers the bottom surface of the top plate, stress may be applied repeatedly during use, causing it to bend together with the top plate 1 and the coating layer 3. Although there is almost no peeling off from the bottom surface of the surface plate 1, in order to completely prevent the peeled powdery copper particles from leaking out from the holes 4 of the coating layer 3, a thermal spray layer is applied as shown in FIG. After covering it from below with a nonwoven fabric or cloth 2', a covering layer 3 may be provided underneath.

The thickness of the thin copper layer 2 by thermal spraying is several tens of microns.
The thickness should be about 300μ so as not to impair the flexibility of the surface plate 1 and the coating layer 3 as much as possible. Further, this thin copper layer may be provided on the lower surface of the surface plate over substantially the entire area, or may be provided only on a necessary portion.

The embodiments shown in FIGS. 3 and 4 are those in which the thin copper layer 2 is made of foil of copper or its alloy.

In this case, the thickness of the copper foil is approximately 0.05 to 0.3 mm so as not to impair the flexibility of the surface plate 1 and the coating layer 3. Then, punch it out into the desired shape, press it with a burring punch from one side, and press it to the other side.
Tapered burr tubes 6 that protrude by about 0.3 to 1.00 mm are punched out at several locations, and these burr tubes 6 are bitten into the surface plate 1 from below and are combined with the surface plate to form the plastic coating layer 3. It is placed in a mold and the coating layer is injection molded.

As a result, the plastic penetrates into the surface plate 1 in the areas where the thin copper layer 2 is not present, as in the case where the coating layer 3 is injection molded on the lower surface of the surface plate 1 in the embodiment shown in FIGS. In this embodiment, a part of the plastic penetrates into the surface plate 1 through the burring tube 6 and adheres thereto, and the thin copper layer 2 is a foil.
This adhesive part 3' covers the weak bonding strength between the surface plate and the surface plate, which cannot be bonded by directly biting the copper fine particles into the surface plate as in the case of thermal spraying, and at the same time increases the bond strength between the surface plate 1 and the coating layer 3. It also increases.

Of course, since the thin copper layer 2 of the copper foil is covered with a coating layer that covers the lower surface of the top plate 1, it will not peel off from the top plate.

In the embodiments shown in FIGS. 3 and 4, the thin copper layer 2 is provided over almost the entire lower surface of the surface plate, but the thin copper layer 2 may be provided only in a portion as in the embodiment shown in FIG.

The fourth embodiment shown in Figs. 6 and 7, the fifth embodiment shown in Figs. 8 and 9, and the sixth embodiment shown in Figs.
Similarly to the embodiment shown in FIG. 5, the thin copper layer 2 is made of copper or copper alloy foil, and as in FIG. Attach by layer 3.

This thin copper layer 2 made of foil has a burring tube 6 that is bitten into the surface plate 1 from below as shown in FIGS. 3 and 4 and FIG. The copper thin layer 2 is filled with a diameter of 5 to 15 mm.
It also has a relatively large opening 7. For this purpose, when the covering layer 3 is injection molded, the plastic likewise fills the opening 7 and adheres to the underside of the top plate 1. This adhesive part 3'', like the adhesive part 3' in the burring tube 6, increases the bonding strength of the thin copper layer 3 of the foil to the surface plate 1 and the bonding strength of the covering layer 3 to the surface plate 1. This effectively prevents the copper thin layer foil that is loose from the lower surface of the surface plate 1 from emitting a clicking sound inside the cover layer 3 due to stress repeatedly applied during use.Opening 7 Although one is provided in the center of the thin copper layer 2, the number is not limited to one and a plurality may be provided.

The fourth embodiment shown in FIGS. 6 and 7 includes a plurality of thin copper layers 2,
It is placed on the lower surface of the surface plate 1, and is fixed by covering the entire lower surface of the surface plate with a coating layer 3 injection molded, and the coating layer 3 has holes and downward protrusions 5 evenly arranged over the entire surface. Therefore, copper ions exit from the holes 4 located below the thin copper layer 2 to the upper surface of the sole.

In the fifth embodiment shown in FIGS. 8 and 9, the covering layer 3 is
They are not formed on the entire bottom surface, but are formed by injection molding on a portion of the bottom surface of the surface plate 1, which is slightly larger than the thin copper layer 2, and each coating layer 3 is provided with holes 4 and downward protrusions 5 on the entire surface. There is. In this embodiment, since the covering layer 3 is not provided on the entire lower surface of the top plate, the weight of the insole is reduced accordingly.

In the sixth embodiment shown in FIGS. 10 and 11, in order to further reduce the weight than that shown in FIG. A thin copper layer foil is fixed to the upper bottom surface of the recess 8 by means of a coating layer 3 injected into the interior of the recess 8. It goes without saying that each of the lower ends of the downward protrusions 5 of the covering layer 3 protrudes below the lower surface of the surface plate 1.

As a result, the weight can be further reduced compared to the embodiments shown in FIGS. 8 and 9 by the amount of the recess 8 formed on the lower surface of the surface plate, and flexibility can also be increased.

FIG. 12 is almost the same as the embodiments shown in FIGS. 10 and 11 described above, except that a sterilizing agent, This is because a powder of a chemical such as a deodorizing agent or a cloth or sheet 9 holding the powder is interposed therebetween.

As a result, in this embodiment, not only copper ions from the thin copper layer 2 are released from the holes 4 onto the sole of the shoe, but also medicinal ingredients such as disinfectants and deodorizers are released, so that in addition to preventing and treating athlete's foot, It also has deodorizing and sterilizing effects.

The embodiment shown in FIG. 13, like the sixth embodiment shown in FIGS. A thin copper layer 2 is fixed to the upper bottom surface of the recess by a plastic covering layer 3 having holes 4 and projections 5 injected into the recess. Then, a disinfectant and a deodorizing agent 9 are put into the remaining depressions 8, and these can be injected into the depressions 8 with plastic, or they can be attached to the lower surface of the surface plate 1 by covering the depressions 8 with adhesive or the like. A sterilizer and a deodorizer 9 are enclosed and held by a flexible cover 10. This disinfectant or deodorizer may be in powder form, and its components act on the soles of the feet through the surface plate 1. When the powder is in the form of a powder, if a hole is made in the cover 10, it will leak out from there, but if a sheet of non-woven fabric impregnated with a disinfectant or deodorizer is placed in the cavity, a hole should be made in the cover 10 to leak it. The components can also be made to come out from the pores.

The coating layer 3 is preferably transparent or semi-transparent so that the presence of the thin copper layer 2 can be visually recognized.

<Effect of the invention> According to the present invention, copper ions generated by the thin copper layer not only act on the sole of the foot from the breathable surface plate, but also penetrate through the holes in the coating layer to the bottom surface of the coating layer formed by the protrusions and the top surface of the sole. It spreads throughout the interior of the shoe through the space between.

In particular, the spaces formed by protrusions due to stress during walking are
Compression and restoration of the protrusions act as a breathing force to supply and expel air, so air is constantly circulating, and copper ions are carried by the air and diffuse within the shoe, acting on the entire foot, and at the same time removing moisture from sweat etc. This dries and creates an environment unsuitable for the growth and existence of athlete's foot inside the shoes.

Therefore, it is possible to provide an insole that is extremely effective in treating and preventing athlete's foot with a small amount of copper.

[Brief explanation of the drawing]

The drawing shows an example of the insole of the present invention.
Figure 1 is a plan view of the first embodiment, with one half seen from the front and the other half from the back, Figure 2 is a partially enlarged sectional view of Figure 1, and Figure 3 is the back of the second embodiment. 4 is an enlarged sectional view of a part of FIG. 3, and FIG. 5 is a partially enlarged sectional view of FIG.
FIG. 6 is a plan view of a part of the fourth embodiment seen from the back, FIG. 7 is an enlarged sectional view of the main part of FIG. 6, and FIG. 8 is a plan view of the fifth embodiment. FIG. 9 is an enlarged sectional view of the main part of FIG. 8; FIG. 10 is a plan view of a portion of the sixth embodiment as seen from the back; FIG. 11 10 is an enlarged sectional view of the main part of FIG. 10, FIG. 12 is an enlarged sectional view of the same main part as shown in FIG. 11 of the seventh embodiment, and FIG. A plan view seen from the back; In the figure, 1 is the surface plate, 2 is the thin copper layer, 3 is the coating layer,
4 indicates a hole, and 5 indicates a protrusion.

Claims (1)

[Scope of utility model registration request] A plastic coating layer is provided on the bottom surface of the surface plate made of one or more layers of breathable sheets with a thin copper layer interposed therebetween, and this coating layer has holes that reach the thin copper layer from the bottom surface and holes that extend downward from the bottom surface. An insole for shoes characterized by having a protruding protrusion.