KR20040071140A - Shoe insole - Google Patents

Abstract

It provides an insole that is easy to clean and has good adhesion with the sole. An insole formed by molding a thermoplastic elastomer into a sheet-like article having the shape of a sole or the shape of a sole tip by injection molding.

Description

Shoe insole {Shoe insole}

Conventionally, insoles have been used on the bottoms of sandals, such as sandals and sandals without heel, for the purpose of preventing dirt, imparting cushioning properties, preventing slipping, etc. As such insoles, for example, silicone rubber or the like It is mainly used to cut and cut a sheet of the sheet in accordance with a predetermined shape (for example, the shape of the sole entire surface or the shape of the sole foot).

However, since these insoles are silicone rubbers, the adhesion between the soles is insufficient, and therefore the insoles are shifted or flipped due to the insertion force of the foot during use. Particularly, in the shape of the sole of the sole, in women's sandals, a large load and a frictional force are applied to the insole when the foot is inserted into the toe, and thus there is a drawback of shifting or flipping.

Accordingly, an object of the present invention is to provide a novel shoe insole.

Another object of the present invention is to provide an insole for preventing dirt, in particular sandals, which has good adhesion to the sole and is free of slippage and peeling due to large loads and frictional forces.

The present invention relates to anti-dirty insoles (sheets) of sandals, such as shoe insoles, in particular sandals, sandals without heel.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing one embodiment of an insole according to the present invention.

2 is a plan view showing another embodiment of the insole according to the present invention.

3 is a cross-sectional view taken along line III-III of FIG. 2.

4 is a plan view showing still another embodiment of the insole according to the present invention.

5 is a plan view showing still another embodiment of the insole according to the present invention.

Fig. 6 is a cross-sectional view showing an embodiment of the countervalgus bloating measures used in the shoe insole according to the present invention.

7 is an embodiment of the flat foot insole according to the present invention.

FIG. 8 is a cross-sectional view of the projection along the VII-VII line in FIG. 7. FIG.

Fig. 9 is an embodiment of the insole for correcting X leg according to the present invention.

10 is a cross-sectional view of the projection along the X-X ray in FIG. 9.

Fig. 11 is an embodiment of an insole for leg correction according to the present invention.

FIG. 12 is a cross-sectional view of the projection taken along the line XII-XII in FIG. 11.

Fig. 13 is an embodiment of the shock absorbing insole according to the present invention.

14 is a cross-sectional view of the projection taken along the line XIV-XIV in FIG. 13.

(Initiation of invention)

The said object is achieved by following (1)-(11).

(1) An insole in which a thermoplastic elastomer is molded by injection molding into a sheet-like material in the shape of the sole or the shape of the sole tip.

(2) An insole according to (1), wherein the upper surface of the insole is embossed.

(3) The insole of the above (2) description, wherein the embossing is not performed at the protruding portion of the insole.

(4) The insole according to any one of the above (1) to (3), wherein the insole includes a protrusion of a detachable thermoplastic elastomer.

(5) The shoe insole according to the above (4), wherein the projection is for countervalence ignorance.

(6) The insole of the above (4) description, wherein the projection is for straight foot straightening.

(7) The insole of the above (4) description, wherein the protrusion is for correcting an X-type leg.

(8) The insole of the above (4) description, wherein the projection is for O type leg correction.

(9) The insole of the above (4), wherein the projection is for shock absorption.

(10) The insole of any one of the above (1) to (4), wherein the insole is a half insole.

(11) The insole of (10) above, wherein at least the foot insertion side of the half insole has a tapered inclination toward the surface.

(The best form to carry out invention)

Next, the present invention will be described in detail with reference to the drawings.

That is, the insoles 1 and 2 according to the present invention have a shape 1 almost the same as the front shape of the sole, or the sole tip (toe, as shown in Figs. 1 and 2 (both left feet only)). A half insole 2 from the attached part. Thus, the surface of the insole (the surface opposite to the surface in contact with the sole) is embossed to form a matte shape, thereby exhibiting an anti-slip effect on the surface in contact with the foot.

The insole can be obtained by molding the thermoplastic elastomer by the injection molding method in the shape of the sole (see FIG. 1) or in the shape of the sole tip (the front part from the portion where the toe is attached) (see FIG. 2). In this case, it is preferable that the surface (that is, the opposite surface in contact with the sole surface) is embossed to form a matte shape. This embossing can be performed simultaneously with injection molding by forming an embossed surface in a mold used for injection molding, and an insole embossed on one surface can be obtained. Moreover, in the said thermoplastic elastomer, it is also possible to disperse | distribute metal powder, such as aluminum powder, aluminum foil powder, copper powder, copper foil powder, and metal foil powder, and to make it into a lame shape, and aesthetics arise by this, and fashion property is improved.

On the other hand, since it is a flat surface without embossing on the lower surface (surface contacting sole), as described later, the adhesion with the sole is extremely good when pressed during use.

The insoles 1 and 2 have a thickness of 0.4 to 1.2 mm, preferably 0.4 to 0.9 mm, and more preferably 0.4 to 0.7 mm. As shown in FIG. 2, in the case of a half insole 2, at least the end face 3 on the side opposite to the toe has a tapered inclination toward the surface, as shown in FIG. 3. It is desirable to have. As a result, even when pressure is applied when the foot is inserted into the sandal, the foot is smoothly inserted and no peeling occurs.

4 and 5, embossing is not performed on a portion of the insoles 4 and 5, particularly for forming projections for countervalence vulgaris prevention as described later. Otherwise, since the location (protrusion forming position determining section) 6, 7 is not embossed, it becomes transparent (even if lame processing is performed), so that the hallux valgus prevention projection 8 as shown in Fig. 6 can be formed. Positioning at the time becomes extremely easy. The valgus secretion prevention projection 8 is generally flat on its lower surface and curved on its surface. Thus, both the insoles 4 and 5 are made of thermoplastic elastomer, so that the adhesion between them is extremely good. Therefore, once formed in a predetermined position, there is no worry of slipping even if a sliding force or pressure is applied when the foot is inserted into the sandals.

In addition, as shown in FIG. 7, except that the part 10 which is not embossed is formed in the part which is stepped by the foot of the insole 9, it is embossed almost in the whole surface, and becomes a matte shape, The said embossing ratio In the machining portion, the projection 11 is detachably positioned. As shown in Fig. 8, the protrusion 11 is formed by flattening the lower surface and curved upwards. Thereby, the correction of the flat foot is possible.

In addition, as shown in FIG. 9, the inner part near the heel part of the insole 12 is embossed to almost the entire surface except that the part 13 which is not embossed is formed and has a matte shape. In the embossed unworked portion, the projection 14 is removably positioned. As shown in FIG. 10, this protrusion 14 is shaped to increase toward the inside. This makes it possible to correct the X-shaped legs.

In addition, as shown in FIG. 11, except that the part 16 which is not embossed was formed in the outer part near the heel part of the insole 15, it is embossed almost in the whole surface, and it becomes a matte shape, In the embossed unworked portion, the projection 17 is detachably positioned. As shown in FIG. 12, this protrusion 17 is a shape which becomes high toward an outer side. Thereby, O type leg can be correct | amended.

In addition, as shown in FIG. 13, except that the part 19 which is not embossed is formed in the heel part of the insole 18, it is embossed almost in the whole surface, and becomes a matte shape, The said embossing unprocessed In the part, the projection 20 is detachably positioned. As shown in Fig. 14, the protrusions 20 are substantially flat. As a result, the load or the impact applied to the heel can be absorbed.

1, 4, 7, 9, 11, and 13, the curves indicated by reference numerals a to c are lines for cutting the insoles 1 and 4 according to the size of the shoe.

In addition, there are various thermoplastic elastomers used in the present invention, for example, polystyrenes, polyolefins, polyurethanes, polyesters, and the like, but there are many injection molding shapes, excellent adhesion, and at room temperature to low temperature. Polyester thermoplastic elastomers are preferred because they have rubber elasticity.

As the polyester thermoplastic elastomer, styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS), styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene-ethylene -Propylene-styrene block copolymer (SEPS) and the like. It is preferable to use such a polyester thermoplastic elastomer as a molding material (molding composition) which mix | blends polyolefin, such as polypropylene and polyethylene, and an oil etc. in order to raise hardness and fluidity.

The insole is usually molded by injection molding as such a thermoplastic elastomer.

Next, an Example is given and this invention is demonstrated in more detail.

(Example)

Aluminum foil is blended with a molding composition (Sefuton KC-145A, manufactured by Kuraray Plastics Co., Ltd.) formed by blending polypropylene and oil with styrene-butadiene-styrene block copolymer (SBS), and this is an injection molding machine (Sumitomo Corporation). The insole of the shape shown in FIG. 4 and FIG. 5 by the nozzle temperature of 250 degreeC, the 1st zone temperature of 240 degreeC, and the 2nd zone temperature of 230 degreeC by Machine Corporation SG-75) In addition to 6 and 7) parts, embossing was performed to prepare insoles 4 and 5 containing lame having a thickness of 0.75 mm. The part of the said location (symbol 6 and 7) is transparent.

Further, under the same conditions, the same material was manufactured as shown in Fig. 6, having a diameter of 30 mm and a maximum height of 4 mm for the prevention of hallux valgus 8.

The insole thus obtained has very good adhesion to the sole when it is laid on sandals, and further has good adhesion with the prevention of hallux valgus prevention, and it may come off or peel off when the foot is inserted. It didn't happen at all. In addition, since the positioning portions 6 and 7 were transparent, the positioning of the valgus ignorance preventing projection 8 was extremely easy.

In addition, in the case of the half insole 5 shown in Fig. 5, the end 3 of the opposite side (the part where the toe is attached) of the toe end is inclined in a tapered shape toward the upper surface, so that when the foot is inserted, No deviation or peeling occurred at all.

As described above, since the shoe insole according to the present invention is formed by injection molding a thermoplastic elastomer, there is no fear that a slip or peeling occurs due to pressure or sliding force when the foot is inserted during use. In addition, when the attachment point for prevention of hallux valgus is specified, the positioning thereof is extremely easy, and the adhesion between the hallux valgus countermeasure and the insole is extremely good even when no adhesive is used. In addition, the insole can prevent slipping of the foot by embossing the surface. Similarly, when the embossed unfinished portion is formed in each of the necessary places and the projections are placed in the portions, the adhesion of the protrusions in the portions is extremely good, and the flatness, the X-shaped legs, and the O-shaped legs are corrected by the use points. Etc. can be performed easily.

In addition, since the insole can be easily removed and washed when it is dirty, the insole can be kept clean at all times and odor can be prevented. In addition, since the insole according to the present invention is molded by the injection molding method, as shown in Figs. 1 and 2, L or R (not shown) for displaying left and right, or a curve after cutting according to the size (a , b, c, etc.) or other requirements can be easily engraved during molding.

Claims (11)

An insole in which a thermoplastic elastomer is molded by an injection molding method into a sheet-like article having a shape of a sole or a shape of a sole tip. The insole of claim 1, wherein the upper surface of the insole is embossed. The shoe insole according to claim 2, wherein the embossing process is not performed at the protruding portion of the insole. The insole of claim 1, wherein the insole comprises a protrusion of a removable thermoplastic elastomer. The sole of claim 4, wherein the protrusion is for countervalgus ignorance. The insole of claim 4, wherein the protrusion is for flat foot straightening. The sole of claim 4, wherein the protrusion is for correcting an X-type leg. The sole of claim 4, wherein the protrusion is for correcting an O type leg. The sole of claim 4, wherein the protrusion is for absorbing shock. The shoe insole of claim 1, wherein the insole is a half insole. 11. The sole of claim 10 wherein at least the foot insertion side of the half insole has a tapered inclination toward the surface.