JP4068595B2 - Shape-up shoes - Google Patents

Description

  The present invention relates to a shape-up shoe, which has a walking effect similar to walking on sand, has a large calorie consumption during walking, eliminates lack of exercise in a short period of time, and relates to a shape-up shoe having a high diet effect.

  In today's busy city, walking is used as a means of resolving the lack of daily exercise. Walking is carried out with recreation from elderly people to children because it can be performed at any time according to their physical strength.

If you spend the same amount of time, you can say a method that increases the effect of exercise, such as walking with a load on shoes, using shoes that rise toes, or Nordeck walking on the sandy beach.
When walking on the sandy beach, the sand layer presses against the sand layer when touching the ground, and the buttock penetrates into the sand layer. It is said that about 1.2 to 1.5 times the amount of exercise can be obtained compared to walking. Therefore, it consumes a lot of energy and has a large diet effect.
The movement of the foot, that is, stepping deeply on the buttocks and kicking is defined as the undulating undulation effect.

  As a conventional technique that incorporates the undulation effect, the first method is that the sole part comprises at least a midsole, an undersole and an outsole, the midsole is hard and elastic, and the intermediate undersole is elastically flexible. In spite of the fact that it is in a loaded state, it becomes a new shape due to the acting force, deforms according to the acting direction of the load, produces a undulating undulation effect, has a high exercise effect, and feels like walking barefoot in sand Shoes are provided (see, for example, Patent Document 1).

The second method is a proposal for obtaining the undulation effect on the shape of the shoe sole. By tilting the buttock grounding surface downward with respect to the line connecting the tiptoe tip of the shoe sole upper surface and the buttock rear end, and tilting the toe portion upward from the stepping portion corresponding to the base ball portion, There has been proposed a shape-up shoe with a high movement effect, in which the heel part sinks deeply, the toes rise and the vertical displacement is large (see, for example, Patent Document 2).
In addition, sports shoes that have both shock absorption and resilience have been developed. For example, “a shoe having a sole, having a recess in the thickness of the sole, and having an elastic body having selectable hardness characteristics that is detachably housed in the recess” (Patent Document 3), “Sports shoes in which a notch is formed in the midsole, and a cushion material made of a foam of a mixture of an ethylene-octene copolymer and an ethylene vinyl acetate copolymer is interposed in the notch” (Patent Document 4). It has been known.
Special table 2003-508098 gazette JP 2002-65310 A JP-A-1-91801 JP 2001-128707 A

Both the shape-up shoes according to Patent Document 1 and Patent Document 2 have an ups and downswelling effect and increase the amount of exercise activity. However, the shoes according to Patent Document 1 are provided on the entire surface of the bottom forming portion in the middle in the shoe bottom structure. Although the undersole is elastic and flexible, it becomes a new shape due to the acting force in the loaded state and deforms according to the acting direction of the load. Had.
The sports shoes of Patent Document 3 and Patent Document 4 are intended to improve impact and resilience at the time of violent movement during sports stop and dash, such as tennis and basketball, and to reduce the burden on the foot. There was a problem that energy consumption such as oxygen consumption during walking was small and the diet effect was small. The shoes of Patent Document 3 and Patent Document 4 are sports shoes suitable for sports such as tennis and baskets with a large amount of exercise and intense movement, and are not intended for walking, so even if you walk with shoes on, There was a problem that the effect of burning body fat was small, the calorie consumption was small, and the diet effect was lacking.
In addition, both the shape-up shoes of Patent Document 1 and Patent Document 2 require new production equipment, for example, a shoe mold, and it is difficult to provide shoes at an inexpensive price. In addition, there is a problem that the design of the shoe sole is also restricted.

  The present invention performs intensive research to solve the problems of the prior art, has a sense of stability in walking, increases the amount of exercise activity due to the undulating swell effect compared to conventional walking, and burns body fat as much as possible (i.e., The energy consumption such as oxygen consumption is increased), and the shape effect is improved by the diet effect, the movement is small, the movement is gentle, and even if you walk for a relatively long time, there is no lateral blurring, and walking is stable. The purpose is to provide shape-up shoes that can use conventional production equipment, can be freely designed, and are excellent in mass productivity at low cost.

The invention of claim 1, the bottom and midsole in forming the sole uppermost layer portion, or is formed through into the stepped portion of the ground pressure portion and mother趾球the vicinity of the heel central portion of the midsole A volume formed of a notched portion, a foam of a viscoelastic composition containing 3,4-bonded isoprene, or a butyl-based solid rubber provided with a through-hole or a through-groove, with a side surface being constrained and embedded in the notched portion An insole formed by an absorbent body, a foam of a viscoelastic composition containing 3,4-bonded isoprene, or a butyl-based solid rubber provided with a through hole or a through groove, and inserted into the upper surface of the uppermost layer portion of the shoe sole; It is a shape up shoe characterized by having.

The invention according to claim 2 is the shape-up shoe according to claim 1, wherein the foam has a through hole or a through groove .

The invention according to claim 3 is the shape-up shoe according to claim 1 or 2 , wherein the insole is a semi-insole formed in a length from the heel portion to the arch portion.

The invention according to claim 4, outsole is formed of a transparent or semi-transparent elastic composition material, either the volume absorber of claim 1 to 3, characterized in that it is visible through the outsole 1 The shape-up shoes described in 1.

The basic sole of a typical walking-only shoe usually has a three-layer structure of insole / midsole / outsole.
In the present invention, the basic structure of the shoe sole is left as it is, the ground contact pressure portion of the insole and the midsole or midsole, and the stepping portion near the base ball portion are cut out, and the cutout portion is elastic. By embedding a volume absorber having a vertical displacement function, an undulating undulation effect is generated during walking to increase the momentum, and a diet effect is achieved in a short time.

The insole is elastic and relatively hard, such as leather board or pulp board. Thereby, the effect | action of stabilizing a walk is acquired.
Further, when a groove or slit in the width direction is provided in the insole so as to bend easily at the stepped portion in the vicinity of the baseball, the stepped portion can be stepped in deeply when kicking out, and the undulation effect can be increased. The thickness of the insole according to the present invention is usually 0.5 to 1.0 mm.

  Moreover, you may use the half insole from a heel part to an arch part as an insole. If the half midsole is used, since there is no hard insole in the stepping part near the baseball, the flexibility is improved, and the kicking part can be stepped deeply.

  For the midsole, foam is used to reduce the weight and cushioning of the shoe. The foam is formed of a foam such as ethylene vinyl acetate copolymer resin, polyurethane resin, or vinyl chloride resin, and has a hardness in the range of 50 to 80 (JIS K6253 type E), more preferably a hardness of 55 to 75. (JIS K6253 type E). The thickness of the midsole is 4 to 12 mm, preferably 5 to 10 mm. As a result, it has moderate cushioning properties and is lightweight, so that even when walking for a long time, there is little fatigue and the undulation effect can be exhibited smoothly.

  For the elastic volume absorbent according to the present invention, rubber or thermoplastic elastomer having a large number of penetrating voids, rubber or thermoplastic elastomer containing a hollow particle body, sponge, air spring, or the like is used. The volume absorber has a hardness of 30 to 60, preferably 35 to 55 (JIS K6253 type E).

The elastic body having a large number of through-holes constituting the volume absorber includes open-cell elastic foam, closed-cell elastic foam with through-holes or through-grooves (long holes), viscoelastic and flexible A rubber or thermoplastic elastomer having a through hole or through groove is preferably used.
It was found that a large volume change is necessary to produce the undulation effect in the small space provided in the midsole. For example, an air bag or the like in which air is sealed has a small air escape field and a small amount of displacement. However, by providing the through hole or through groove of the present invention, the elastic foam is not provided with an air gap. It was found that the displacement was much larger than
In order to increase the undulation effect, it is preferable to provide a through hole or a long through hole.

When using an independent foam as the volume absorber, considering the shrinkage of the volume of the built-in gas sphere, the capacity of the through-holes (holes and grooves) (the sum of the volume of the gaps and the sheet thickness of the same thickness) In the case of this foam, the porosity may be regarded as the area, that is, the porosity, which is preferably 2 to 10% of the capacity of the volume absorber. Specifically, if it is a through hole, the size is 1 to 3 mm and 0.1 to 3 per 1 cm ^{2. In} the case of a through groove, it is 1 to 3 mm in width and 0.2 to ² per 5 cm ^2. By doing so, it can be made 2 to 10% of the capacity of the volume absorber. As a result, a high displacement rate can be obtained and an undulating and undulating effect can be produced efficiently in accordance with walking.

When solid rubber is used as a volume absorber, unlike the foam, it is not possible to shrink the volume of the built-in gas sphere. %.
The thickness of the volume absorber is formed to a thickness of the thickness of the midsole and the midsole, or a thickness of only the midsole, and is 4.5 to 13 mm, preferably 5 to 11 mm.
When the gap is 10% for the closed foam and more than 40% for the solid rubber, the compression resistance tends to decrease, the feeling of bottom contact tends to become worse, and the walking feeling tends to worsen. As the foam decreases to 2% and the solid rubber decreases to less than 30%, the amount of displacement decreases, the undulation effect decreases, and the diet effect tends to be difficult to obtain.
In addition, as the thickness becomes smaller than 5 mm, the amount of displacement tends to decrease, and the undulation effect tends to decrease. As the thickness becomes larger than 11 mm, the compression resistance decreases, and the volume of the entire shoe increases. As a result, the appearance looks bad and the weight increases, which tends to be unfavorable, and as these tend to be less than 4.5 mm or more than 13 mm, it is not preferable.

As the material of the volume absorber, since the undulation undulation effect is weakened if the spring function is too strong, a material having a high viscosity with which the spring slowly recovers is preferable.
A foam of a viscoelastic composition containing 3,4-bonded isoprene, which is a material having a peak temperature of loss tangent (tan δ), which is a measure of viscosity, around 19 ° C. and room temperature and a large tan δ of 1.9 is preferable. Moreover, even if a through hole is provided in a butyl-based solid rubber, desirable properties can be obtained. Since the peak temperature of butyl tan δ is around 0 ° C. and the value of tan δ is as large as 1.5 to 1.6, a high undulation effect can be obtained.

It is preferable to use the same material as the volume absorber as the material of the shoe insole that is inserted into the shoe and used. This increases the amount of displacement in the vertical direction of the entire shoe sole, and further increases the undulation effect. In addition, the material of the shoe insole and the volume absorber can be used in combination of low-viscosity and high-viscosity materials.
The undulation and undulation effect can be further increased by wearing an insole having a shock-absorbing property made of a foam having a large number of through-holes in the heel portion and the stepping portion in the vicinity of the base heel portion.
The impact absorption increases as the material viscosity increases.
The size of the through hole opened in the portion corresponding to the volume absorber installation portion of the shoe insole is about 1 to ² mm and about 0.5 to ² per 1 cm ² . If there are more than ² through-holes per 1 cm ² or the diameter is too large, the shock absorption capacity tends to be reduced. Also, if the number of through-holes is less than 0.5 per 1 cm ² , Is less than 1 mm, the impact absorbability tends to decrease, which is not preferable.

  In selling undulating and undulating shoe products, it is desirable to make the volume absorber visible through the outsole of the shoe in order to increase ease of explanation and persuasion to consumers. For this purpose, it is necessary to make the outsole a transparent elastic composition.

The rubber used as the material for the outsole is a rubber for shoe soles, and is a synthetic rubber such as styrene-butadiene rubber (SBR), butadiene rubber (BR), isoprene rubber (IR), and special synthetic rubber such as acrylonitrile. Examples include, but are not limited to, butadiene rubber (NBR), butadiene / acrylonitrile / acrylate terpolymers, butadiene / acrylonitrile / isoprene terpolymers, and the like. These rubbers may be used alone or in a blend.
These rubbers are mixed with a vulcanizing agent and a compounding agent in consideration of transparency to obtain a transparent compounded kneaded product. The kneaded product is placed in a mold and vulcanized by heating and pressing to form a predetermined shape.
A transparent thermoplastic elastomer may be molded by injection molding. A transparent thermoplastic elastomer for shoes is preferably styrene based on adhesiveness.

The present invention cuts out the contact pressure part in the middle part of the insole and the midsole of the midsole forming the shoe sole uppermost layer part and the stepping part in the vicinity of the base ball part, and the cutout part has elasticity and has a side surface. By embedding a volume absorber having a longitudinal displacement function in a restrained state, an undulating undulation effect is produced during walking, and exercise intensity is increased.
Further, the undulation effect is obtained by inserting and using an insole made of a foam having a large number of through holes in the upper surface of the uppermost layer portion and in the stepped portion in the vicinity of the heel portion and the base ball portion. Is encouraged.
By using the shape-up shoe according to the present invention, the amount of exercise calories during walking is increased, and the diet effect is increased.

This will be described in detail with reference to the drawings.
FIG. 1 is an overall view showing a partially cutaway cross section according to the present embodiment, FIG. 2 is a view of the bottom of a shoe according to the present embodiment as viewed from the bottom, and FIG. It is a perspective view of the insole which has the shock absorption property which consists of a foam which has many through-holes concerning the form.

  In the insole (1) and the midsole (2) forming the uppermost layer portion of the shoe sole, the insole (1) is a half-insole from the heel portion to the arch portion using a pulp board having a thickness of 0.8 mm. . If the half midsole is used, since there is no hard insole in the stepping part near the baseball, the flexibility is improved, and the stepping part is stepped deeply when kicking out, and the undulation effect can be enhanced. A portion of the midsole (2) that does not have an insole (1) on the upper surface was covered with a fabric.

The midsole (2) was formed of a foam of ethylene monoacetate copolymer resin, had a hardness of 55 (JIS K6253 type E) and a thickness of 10 mm.
A half-midsole (1) and a midsole (2) of the ground contact pressure part (3) at the center part of the heel were cut into a competition track shape having a width of 25 mm and a length of 40 mm to form a notch part 5.
Further, the midsole (2) of the stepping portion (4) in the vicinity of the main ball portion was cut out in a trapezoidal shape to form a cutout portion 5 '. The notch size was a trapezoid with an upper side of 55 mm, a lower side of 70 mm, and a distance between the upper side and the lower side of 60 mm.

Elastic volume absorbers (5a, 5b) were embedded in the ground contact pressure part (3) in the center of the heel, which is the notches 5, 5 ', and the stepping part (4) in the vicinity of the main base ball part.
As the volume absorber (5a, 5b), when the spring function is too strong, the undulating undulation effect is weakened.
A loss tangent (tan δ) peak temperature, which is a measure of viscosity, is around 19 ° C. and at room temperature, and a foam of a viscoelastic composition containing 3,4-bonded isoprene, which is a material having a large tan δ of 1.9, has through holes or The one provided with a through groove was adopted.
The specific gravity of the foam was 0.25. The thickness of the foam was 11 mm, which was substantially the same as the depth of the notch to be embedded, and was cut into the shape of the notch to be embedded.

  The volume absorber (5a) embedded in the ground contact pressure part (3) at the center of the heel has five through-holes (7) with a diameter of 3 mm, and the volume absorption embedded in the stepping part (4) near the base ball part. In the body (5b), three through grooves (8) having a width of 2 mm, a length of 45 mm, and a depth of 11 mm were formed in the width direction of the shoe sole.

An insole (6) having an impact absorption property that is inserted into the upper surface of the uppermost layer portion of the shoe sole and is worn is a portion corresponding to the contact pressure portion (3) at the center of the heel and a stepping portion ( The impact absorbing material was made of a foam in which through holes (9) were formed so that there would be one per cm ² in the portion corresponding to 4). The material was a foam of a viscoelastic composition containing the same 3,4-bonded isoprene as the volume absorber (5a, 5b). In the through hole (9), nine holes with a diameter of 1.5 mm were formed in the heel portion, and 16 holes with a diameter of 1.5 mm were formed in the stepped portion in the vicinity of the base ball portion. The thickness of the insole (6) was 5 mm.

The outsole (10) is a transparent blended kneaded product in which styrene butadiene rubber (SBR) of solution polymerization is used as a main constituent polymer and a known vulcanizing agent and compounding agent considering transparency are mixed. It was put into a mold and vulcanized by heating and pressurizing to form a predetermined shape.
The shoe was molded by a normal bonding method. It was found that the volume absorber (5) was visible through the outsole (10) and could be easily differentiated from other products.
In the present embodiment, the structure formed only on the midsole has been described. However, a similar notch may be formed on the midsole and the midsole to embed the volume absorber.

Next, examples based on the present embodiment and evaluation results of conventional shoes will be described.
Comparison between ordinary walking shoes (hereinafter referred to as conventional products) and the shape-up shoes of the examples (hereinafter referred to as developed products) was made in terms of muscle discharge and oxygen intake.
(1) Muscle discharge amount comparison at the time of kicking The muscle discharge amount was measured using a multi-telemeter system WEB5000 manufactured by Nihon Kohden.
The measuring method is that the electrodes are attached to the surface of the skin corresponding to the position of the gastrocnemius muscles of the lower limbs, wear conventional products and developed products, walk on a treadmill at a speed of 6 km / h, and walk for about 10 seconds after 1 minute of walking. The amount of discharge was measured. For the measurement, a conventional product or a developed product was randomly performed for 3 trials, and the results are shown in FIGS.
FIG. 4 is a diagram showing a measurement result of the gastrocnemius discharge amount of the conventional product, and FIG. 5 is a diagram showing a measurement result of the gastrocnemius discharge amount of the developed product.
Further, muscle discharge amount data for 4 steps per trial was extracted, 3 trials were extracted in the same manner, data for a total of 12 trials were analyzed by a computer, and the results are shown in FIG. FIG. 6 is a diagram showing the measurement results of the gastrocnemius discharge amount of the conventional product and the developed product.
FIG. 6 shows that the developed product has a significantly larger muscle discharge amount and a greater muscle activity amount than the conventional product.
(2) Comparison of oxygen intake Oxygen intake was measured when walking on a treadmill at 6.5 km / h.
Oxygen intake was measured by the Douglas bag method. The collected breath was analyzed for oxygen concentration (paramagnetic method) and carbon dioxide concentration (non-dispersed infrared absorption method) using a breath gas analyzer (Vmax 29C, manufactured by Sensor Medics). The amount of gas was quantified with a dry gas meter (manufactured by Shinagawa Seisakusho), and the gas temperature was also measured. In the test, changes in oxygen intake during walking at 6.5 km / h were performed by 8 subjects, and the results are shown in FIG.
FIG. 7 is a diagram showing the measurement results of oxygen intake of the conventional product and the developed product.
As is clear from FIG. 7, when the developed product was worn, an increase in oxygen intake of 18 to 25% was observed compared to the conventional product.

  The present invention relates to a shape-up shoe, in which an insole forming the uppermost layer portion of the shoe sole and a contact pressure portion in the middle portion of the midsole and a stepping portion in the vicinity of the base ball portion are cut out, and the cutout portion is made elastic. By embedding a volume absorber that has a displacement function in the vertical direction in a state where the side surface is constrained, the undulation effect at the time of walking can be generated, and the exercise strength can be increased, and further, on the upper surface of the uppermost layer part, The shape of the invention according to the present invention is promoted by inserting and using an insole made of a foam having a large number of penetrated voids in the heel portion and the stepping portion in the vicinity of the base ball portion, and wearing it. By using up shoes, the amount of exercise calories during walking can be increased, and shape up shoes that increase the diet effect can be provided.

Overall view showing a partially cutaway section according to the present embodiment The figure which looked at the bottom of the shoes concerning this embodiment from the bottom The perspective view of the insole which has the shock absorption property which consists of a foam which has many through-holes concerning this Embodiment The figure which showed the measurement result of the gastrocnemius discharge amount of the conventional product Figure showing the measurement results of the gastrocnemius discharge of the developed product Figure showing measurement results of gastrocnemius discharge of conventional and developed products The figure which showed the measurement result of the oxygen intake of the conventional product and the developed product

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Middle bottom 2 Midsole 3 Ground contact pressure part of the center part 4 Stepping part 5 near the base ball part 5, 5 'Notch part 5a Volume absorber 5b Volume absorber 6 Insole 7 Through hole 8 Through groove 9 Through hole 10 Outsole

Claims (4)

Bottom and midsole in forming the sole uppermost layer portion, or a cutout portion formed to penetrate the ground pressure section and the base趾球portion stepped portion in the vicinity of the heel central portion of the midsole, 3, a volume absorber foams or through-hole or the through groove formed in the butyl-based solid rubber provided side in the notch of the viscoelastic composition are embedded are constrained containing 4 bound isoprene, 3,4 A foam of a viscoelastic composition containing bound isoprene or an insole formed of a butyl-based solid rubber provided with a through hole or a through groove and inserted into the upper surface of the uppermost layer portion of the shoe sole. Shape up shoes. The shape-up shoe according to claim 1, wherein the foam has a through hole or a through groove . The shape-up shoe according to claim 1 or 2 , wherein the insole is a semi-insole formed in a length from the heel portion to the arch portion. The shape up shoe according to any one of claims 1 to 3 , wherein an outsole is formed of a transparent or translucent elastic composition, and the volume absorber is visible through the outsole.