WO2008001828A1

WO2008001828A1 - Shoe midsole

Info

Publication number: WO2008001828A1
Application number: PCT/JP2007/062955
Authority: WO
Inventors: Shuji Yamamoto
Original assignee: Press Control Co., Ltd.
Priority date: 2006-06-28
Filing date: 2007-06-21
Publication date: 2008-01-03
Also published as: JP2008005942A; JP3944536B1; US20090282701A1

Abstract

A shoe midsole using a plastic material having flexibility, repulsion, and restoring characteristics and capable of instantaneously absorbing and damping an impact from every direction. The plastic material, which has flexibility and restoring characteristics, is used as the material of a body of the shoe midsole. The thickness of the body is set to a range from 1.5 mm to 3.0 mm. The body is formed in a shape that can control the arch of the foot. A heel section provided with a U-shaped edge and made of a plastic material is formed on the underside of a heel section of the body so as to be integral with the body. A continuous groove is provided in a region continuing from a side surface of the U-shaped edge of the heel section to the lower surface of the heel section of the body.

Description

Shoe insole Technical field

The present invention uses a plastic material having flexibility, repulsive force, and resilience, and a shoe insole that can alleviate impacts in all directions while stably supporting the foot arch when a load is applied. About. Background art

Traditionally, shoe insoles have functions such as breathability, antibacterial, deodorant, shock absorption, comfortable fit, arch support, flex, resilience, etc. Among them, breathability, antibacterial, deodorant, shock absorption Such functions are emphasized. The following prior art has been proposed for insoles with excellent cushioning, fitting, and stability.

Japanese Utility Model Publication No. 7-3 9 5 1 No. 1 discloses a cup insole that is mounted inside a shoe, the bottom of the cup insole body made of an elastic material is fitted to the bottom of the shoe, and the upper surface of the heel is The flat part and the side wall part from the inner upper step part to the outer side part through the rear part of the inner shell are formed into a concave curved surface, and a bouncing putty is used on the upper surface of the side wall part. There is disclosed a cup sole having a structure in which a shock absorbing material (sponge) is installed and covered and locked by any one of fabric, non-woven fabric, and leather. Japanese Utility Model Publication No. 6-2 6 5 1 1 discloses that a sponge plate having a large number of through holes is fixed on a substrate, and a urethane foam plate is fixed on the sponge plate. Above, an insole for footwear covered with a surface cover having a number of small holes is disclosed.

In addition, Japanese Patent Laid-Open No. 2 0 0 5-2 0 5 2 0 4 discloses that the sole of the foot is completely fitted to the insole of the shoe, the shock applied to the sole of the foot is buffered during walking, and the ribs are The cup insole is composed of a main body member, a main body member support member, and a buttock-compatible member, and the cup insole is molded with a high-density, low-resilience urethane, with the aim of preventing position and pronation. A high resilience urethane part is fitted in the part corresponding to the heel of the member, and the inner arch protection member, the outer arch protection member, and the second heel protection member are connected together from the bottom of the main body. The second middle foot part corresponding to the second middle foot part has a raised structure from the left and right sides of the body member support member toward the center in the width direction and from both the saddle direction and the stepping part toward the center. The body-corresponding part has through holes in the vertical direction Kappuinsoru for projecting at least one projection is disclosed is 揷 enter the insertion hole formed in.

Japanese Patent Laid-Open No. 2 0205-2 0 4 90 2 discloses an insole excellent in motility and impact relaxation, and a base, a finger ball portion and a heel that are made of different materials from the base. An insole is disclosed in which the material of the finger ball portion and the material of the heel portion are different from each other.

Japanese Patent Application Laid-Open No. Hei 10-2 9 5 4 0 9 discloses a cushion in which one or more layers are laminated for the purpose of improving the breathability of the insole of shoes and eliminating the stuffiness of the foot. And a double raschel mesh layer bonded to the surface of the material. In particular, the cushion material is bonded to the surface of the ethylene-butyl acetate copolymer layer having a shape conforming to the unevenness of the sole. An insole comprising a foamed latex layer and an open-celled urethane foam layer bonded to the surface is disclosed.

As a material for conventional shoe insoles, many sponge materials with excellent cushioning properties are used. However, sponge materials are inferior in flexibility, resilience, and resilience compared to plastic materials, so they have a problem that they do not match the movement of the foot and may suppress movement.

Here, the merit of using a plastic material for the material of the insole is that it is close to the foot, moves in coordination with the ligaments and muscles, works without restraining the movement of the foot, and can perform more natural movement is there. However, if the plastic material is too thick, it will restrain the ligaments and muscles of the foot too much, so restrain the movement. On the other hand, if the plastic material is too thin, it will not be possible to control the foot because the plastic will not be strong.

Accordingly, the present invention has been made to solve such problems, and uses a plastic material having flexibility, repulsive force, and resilience, and stabilizes the foot arch when a load is applied. The purpose is to provide a shoe insole that can absorb and mitigate the impact instantaneously in any direction while supporting it. Disclosure of the invention

A shoe insole according to the present invention is a shoe insole that is inserted into the inner bottom of a shoe and used. The material of the body part of the insole is made of a plastic material having flexibility, repulsive force and resilience, and the thickness of the body part is 1.5 mn! A U-shaped edge made of the plastic material in the lower area from the heel part of the main body part to the vicinity of the arch part, and the main body part is formed in a shape capable of arch control. A flange portion is formed integrally with the main body portion, and the outer surface of the U-shaped edge portion is protruded in the horizontal direction so that the lower surface of the flange portion is formed in a flat shape, and the U-shaped edge portion is horizontally formed. A configuration is adopted in which a groove portion that is continuous from one end to the other end of the U-shaped edge portion is provided in a region that extends from the upper surface of the protruding edge portion to the lower surface that is inclined obliquely downward of the flange portion of the main body portion. In addition, an impact absorbing material is embedded along the groove, and is continuous from one end of the U-shaped edge to the other end of the planar edge of the U-shaped edge of the flange. A concave portion is provided around, the depth of the four portions is set in a range of 2.0 mm to 3.0 O mm, and an impact absorbing material is mounted in the concave portion.

Further, the present invention is characterized in that shock absorbing materials having different hardnesses are attached to the inside side and the outside side of the collar.

As described above, according to the present invention, the material of the body part of the shoe insole is a plastic material having flexibility, repulsive force, and resilience, and the body part has a thickness of 1.5 mm to 3. O mm. In order to work without restraining the movement of the foot, the insole is in close contact with the foot and moves in coordination with the ligaments and muscles. You can do more natural exercise. In addition, the outside of the U-shaped edge protrudes horizontally, and the bottom surface of the collar is formed flat. Five

In addition to contributing to stability, this saddle part is integrally formed using the same plastic material as the main part so as to cover the lower area from the saddle part of the main part to the vicinity of the arch part. A groove that continues from one end of the U-shaped edge to the other end is provided in a region that extends from the upper surface of the outer edge of the U-shaped edge that protrudes in the horizontal direction to the lower surface that slopes diagonally downward of the flange portion of the main body. As a result, when the load is applied, the body can stably support the arch of the foot and the groove can instantaneously absorb and mitigate shocks in all directions (vertical, horizontal, and diagonal). .

In addition, embedding the shock absorber along the groove improves shock absorption and stability.

In addition, a continuous recess is provided around the lower surface of the flat edge of the U-shaped edge of the collar, and the depth of the recess is set in the range of 2.0 mm to 3.0 mm. By wearing the absorbent material, the sense of stability is enhanced, and it is always possible to walk consistently by suppressing wobbling of the heel during walking. In addition, by mounting shock absorbers with different hardness on the inside side and the inside side of the recess, it is effective against flat feet, O-legs, and knee pain.

Here, the control of walking balance can be divided into two main types: control in the first half of walking (when landing) and control in the second half of walking (when kicking out). The applicant of the present application has already invented and obtained a patent for “shoe insole” that contributes to control during the second half of walking (when kicking out) (Patent No. 3 6 6 2 0 1 4; registration date 1995 4) January 1) On the other hand, the insole according to the present invention contributes to the control in the first half of walking (at the time of landing) Because it affects landing when the load is most likely to be applied to the large skeleton of the foot, the control effect of walking balance is greater than the latter half of walking (when kicking). Brief Description of Drawings

FIG. 1 is a perspective view showing an example of a shoe insole (for left foot) according to the present invention. FIG. 2 is a bottom view of the shoe insole shown in FIG. FIG. 3 is an AA enlarged sectional view of the shoe insole shown in FIG. FIG. 4 is a cross-sectional view of the insole B 1 B shown in FIG. FIG. 5 is a side view of the shoe insole shown in FIG. 1 on the outside side. FIG. 6 is a side view of the insole side of the shoe insole shown in FIG. FIG. 7 is a perspective view showing a state in which a hard material is attached to the recess on the inside side of the shoe insole shown in FIG. 1 and a soft material is attached to the recess on the side of the shoe side. FIG. 8 is a perspective view showing a state in which a soft material is attached to the recess on the inside side of the shoe insole shown in FIG. 1 and a hard material is attached to the recess on the outside side. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an example of an embodiment of the present invention will be described.

FIG. 1 is a perspective view showing an example of a shoe insole (for left foot) according to the present invention. As shown in FIG. 1, the shoe insole according to the present invention has a heel part 20 having a U-shaped edge in a lower region from the heel part of the main body part 10 to the vicinity of the arch part. It is formed integrally with 0. A plastic material having flexibility, repulsive force, and resilience is used for the material of the main body 10 and the flange 20.

As shown in FIGS. 3 to 6, the shoe insole according to the present invention has a main body 10. The thickness is set in the range of 1.5 mm to 3.0 mm. Formed so that the surface on the sole of the body 10 can be arch-controlled (shape that supports the foot arch from the inside edge 1 1 a to the outside edge 1 1 b and adheres to the foot) Has been.

The flange 20 has a flat bottom surface formed by projecting the outer side (side surface 21) of the U-shaped edge in the horizontal direction. Also, the U-shaped edge in the region that connects the outer side of the U-shaped edge of the flange 20 that protrudes in the horizontal direction (side surface 21) from the upper surface to the lower surface that is inclined obliquely downward of the flange of the main body 10 A continuous groove portion 22 is provided from one end to the other end. The grooves 22 and 2 can instantaneously absorb and mitigate shocks in all directions (vertical, horizontal, and diagonal).

In addition, a shock absorbing material (not shown) may be embedded in the groove portion 22 in order to improve shock absorption and stability.

On the bottom surface of the U-shaped edge portion of the flange portion 20, there is provided a recess 23 that is continuous from one end to the other end of the U-shaped edge portion. The depth of the recess 23 is set in the range of 2.0 mm to 3.0 mm.

In the recess 23, shock absorbers (symbols 30 · 3 1 shown in FIG. 7 and symbols 3 2 · 3 3 shown in FIG. 8) are mounted. This increases the sense of stability and suppresses wobble of the heel when walking. When considering the position of the center of gravity of the soles during walking, it is considered that the most effective way is to attach the impact absorbing material to the position shown in the figure.

The impact absorbing material is not limited as long as it has an impact absorbing effect such as polyurethane, rubber, rapper, EVA sponge, and the like.

Also, as shown in FIG. 7 and FIG. On the side, shock absorbers with different hardness (hard material 30 and soft material 31, soft material 3 2 and hard material 3 3) may be attached to change the balance.

(First Example)

A flange part 20 having a U-shaped edge is formed integrally with the main body part 10 at the flange part of the main body part 10. A plastic material having flexibility, repulsive force, and resilience is used for the material of the main body 10 and the flange 20. The thickness of the main body 10 is set in the range of 1.5 mm to 3.0 mm. The surface that corresponds to the sole of the main body 10 is formed in a shape that allows arch control.

A groove 22 that continues from one end of the U-shaped edge to the other end is provided in a region connecting the side surface 21 of the U-shaped edge of the flange 20 to the lower surface of the flange of the main body 10. The grooves 22 and 2 can instantaneously absorb and mitigate the shock in all directions (vertical, horizontal, and diagonal).

(Second embodiment)

Similar to the first embodiment, a continuous groove portion 22 is provided around, and an impact absorbing material (not shown) is embedded in the groove portion 22. The groove 22 and the shock absorber improve the shock absorption and stability.

'(Third example)

On the bottom surface of the U-shaped edge portion of the heel portion 20 of the shoe insole described in the first embodiment or the second embodiment, a concave portion 23 is continuously provided from one end of the U-shaped edge portion to the other end. Yes. The depth of the recess 23 is set in the range of 2.0 mm to 3.0 mm. An impact absorbing material (symbol 3 0 · 3 1 shown in Fig. 7) is installed in the recess 23. Is done.

Install a shock absorber made of hard material (symbol 30 shown in Fig. 7) in the recess 23 on the inside side (symbol 23 a shown in Fig. 3). On the other hand, a shock absorber made of a soft material (symbol 31 shown in Fig. 7) is installed in the recess 23 on the outside side (symbol 23b shown in Fig. 3). In this case, the arch support on the inside side is strengthened and the knee is prevented from being inwardly added, which is effective for flat feet and knee pain.

Here, the soft material refers to a material that is extremely excellent in shock absorption and feels the sinking of the foot. Hard materials are materials that have a repulsive force that does not place a burden on the foot and that feel the foot supported from below. In addition, regarding the hardness of soft and hard materials, the hardness of soft materials is on the scale of AS TMD 2 240 based on the AS TM (American Society and Testing and Materials) abbreviation. It is suitable to be 5 5 to 75 degrees. On the other hand, the hardness of the hard material is suitably 60 to 80 degrees on the same scale. Therefore, the hardness difference between the soft material and the hard material is preferably at least 5 degrees or more on the same scale. A specific measuring instrument used for the above scale is Du- ome ter s ZPTC (registered trademark) 400 S E R I E SZ Model 1 4 1 1 ZT y p e 00 manufactured by Pac i fic T r a ns d u c e r Cor.

(Fourth embodiment)

On the bottom surface of the U-shaped edge of the heel 20 of the insole described in the first embodiment or the second embodiment, a concave portion 23 that is continuous from one end to the other end of the U-shaped edge is provided around the bottom. It is. The depth of the recess 2 3 is 2. O mn! It is set in the range of ~ 3.0 mm. An impact absorbing material (symbols 3 2 3 3 shown in FIG. 8) is mounted in the recess 23.

A shock absorber made of a hard material (symbol 3 3 shown in FIG. 8) is attached to the recess 23 (outside side, symbol 2 3 b shown in FIG. 3). On the other hand, an impact absorbing material (symbol 3 2 shown in FIG. 8) made of a soft material is attached to the recess 23 (inside symbol 2 3 a shown in FIG. 3) on the inside side. In this case, the outside arch servo is strengthened and the knee is prevented from abducting outward, which is effective for O-legs and knee pain.

As for the hardness of the soft material and the hard material, those within the respective hardness ranges can be selected as in the third embodiment, but the hardness difference between the soft material and the hard material is at least 5 degrees on the same scale. The above is preferable.

Claims

The scope of the claims

1. In a shoe insole that is inserted into the inner bottom of a shoe and used, the shoe insole is made of a plastic material having flexibility, repulsive force, and resilience, and the thickness of the body is reduced. The range of 1.5 mm to 3. O mm is set, and the main body is formed in a shape capable of arch control, and the plastic material is formed in the lower region from the heel portion of the main body portion to the vicinity of the arch portion. And a U-shaped edge part formed integrally with the main body part, and the outer side of the U-shaped edge part protrudes in the horizontal direction to form the bottom surface of the collar part in a planar shape and the U-shaped edge. A groove that continues from one end of the u-shaped edge to the other end is provided in the area that connects from the outer upper surface of the edge protruding in the horizontal direction to the lower surface that is inclined obliquely downward of the flange portion of the main body. Shoe insole.

2. A shoe insole, characterized in that an impact absorbing material is embedded along the groove portion according to claim 1.

3. A concave portion continuous from one end to the other end of the U-shaped edge is provided on the lower surface of the planar edge of the U-shaped edge of the flange according to claim 1 or 2. A shoe insole, wherein a depth of the recess is set in a range of 2.0 mm to 3.0 mm, and an impact absorbing material is mounted in the recess.

4. A shoe insole characterized in that shock absorbing materials having different hardnesses are attached to the inside side and the outside side of the recess according to claim 3.