JP4363991B2 - Insole of shoes - Google Patents

Description

The present invention relates to an insole that is used by being inserted into a shoe composed of an outer shoe sole and a leather, cloth, or rubber foot support portion for inserting a foot. The present invention relates to the insole of a shoe provided with a spring as a cushioning material that reduces the impact from the ground.

  Shoes that are manufactured for various purposes are generally manufactured with functionality and good comfort according to each application, but you can walk or run while wearing shoes. Since the ground reaction force when touching the ground is large when standing, work has been done to alleviate the impact from the ground and make it difficult for the foot to be transmitted to the foot. Yes.

  Conventionally, from the viewpoint of mitigating the impact from the ground when walking, for example, the entire outer bottom as a shoe sole or the heel portion is manufactured with an elastic part such as rubber to remove the impact from the ground. There have been proposed and marketed, such as those that are relaxed at the bottom, and those that form a space in the flange portion of the outer bottom to absorb an impact with an air cushion as an air tank.

  However, as described above, the outer bottom itself has elasticity, so that the shock from the ground is absorbed, and the shock from the ground is absorbed by the air cushion, When running or standing, etc., it is not possible to absorb the impact from the ground with just the feet, and the impact is transmitted to the knee, waist, spine, etc., and this part is burdened. Actually, the feeling of fatigue increases and a comfortable wearing feeling cannot be obtained.

  In recent years, as a solution to such a problem, a spring is incorporated into the outer sole of the shoe so that it can be seen from the outside, and when the weight is applied to the heel of the shoe, the spring is compressed to reduce the impact from the ground. Something like this has been proposed.

  FIG. 6 shows an example. Only the heel portion 2 of the outer bottom 1 of the shoe is thickened in a thick shape, and the middle portion in the thickness direction (vertical direction) of the thick heel portion 2 is cut away. The portion 2 is divided into an upper flange portion 3a and a lower flange portion 3b. Further, a plurality of impact relaxation compression springs 4 are arranged side by side between the upper flange portion 3a and the lower flange portion 3b, and the upper and lower ends of each compression spring 4 are connected to the upper flange portion 3a and the lower flange portion 3b. When the weight is applied to the upper heel portion 3b and the weight is applied to the upper heel portion 3b, each compression spring 4 is compressed, and the impact from the ground is absorbed by each compression spring 4 to relax. . Reference numeral 5 denotes a foot support portion as a shoe body that allows the foot to support the shoe (see, for example, Patent Document 1).

  In the shoe shown in FIG. 6, when walking or running with a foot attached, if the weight is applied to the upper heel portion 3 a of the outer bottom 1 by landing on the heel of the foot, the upper heel portion 3 a and the lower Each compression spring 4 interposed between the heel portion 3b compresses and sinks the upper heel portion 3a downward by a required amount, so that it is transmitted from the ground to the heel of the foot through the lower heel portion 3b of the outer bottom 1. The impact force to be applied can be absorbed by the compression springs 4, and on the other hand, when walking, the weight is transferred to the front side of the foot and the entire foot is supported and the ground is kicked up. In some cases, the compression springs 4 are extended to push up the heel of the foot, so that it is possible to impart shock absorption, energy storage, and energy recovery to the foot.

  In addition to the one shown in FIG. 6, the heel portion of the outer bottom of the shoe is thickened and divided into upper and lower parts, and a compression spring is interposed between them to reduce the impact from the ground when walking or running. There are some which are absorbed and relieved by a compression spring of the heel portion (see, for example, Patent Document 2 and Patent Document 3).

  Also, as a means to absorb the impact on the heel of the shoe when walking or running, it acts between the insole and the bottom (outer bottom) of the shoe sole. A cushion portion that absorbs an impact from the ground against a load to be applied, and the cushion portion includes an upper cylindrical body and a lower cylindrical body configured to form an air tank, a fixing pin attached to the inside of the upper cylindrical body, The inner spring 10 is arranged between the upper cylindrical body and the lower cylindrical body by being fitted to the fixing pin. There has also been proposed a structure in which the cushion portions are arranged side by side and an insole is placed on the upper surface (see, for example, Patent Document 4).

JP 2001-501123 A JP-T 9-506804 US Pat. No. 6,568,102 B1 JP-A-8-107802

  However, in each of Patent Document 1, Patent Document 2, and Patent Document 3, the heel portion of the outer bottom 1 of the shoe is divided into upper and lower parts, and a compression spring 4 is interposed between the upper and lower parts. The upper surface of the upper portion, that is, the upper surface of the upper heel portion 3a shown in FIG. 6, is higher than the height of the heel portion of the normal shoe sole by the height of the spring 4 from the position of the lower surface of the lower heel portion 3b that is the ground plane. Yes. Therefore, when it is actually worn, it is inevitable that the toe stands and becomes unstable, and there is a tendency that smooth and stable walking cannot be performed unless considerable care is taken. Also, when wearing and walking, forgetting that the upper heel part 3a where the heel of the foot is placed is higher than the height of the heel of the shoes that you can usually wear, unevenness on the road surface, steps, stairs, etc. There is a risk that the shoe will catch on, fall over, or twist your foot.

  Further, the spring 4 is visible from the outside, and if rainwater or dust enters the spring device and foreign matter is caught in the spring, the spring may be biased when the weight is applied. . Furthermore, in order to prevent the outer bottom of the hard material from being divided into upper and lower parts and a spring between them, and to prevent the spring from being detached during use, it is very difficult to install the spring. It is an important task and cannot be done easily.

  On the other hand, what is shown in Patent Document 4 uses the elasticity of the air cushion and the spring, but since the insole is laid directly on each cushion part, if the elasticity of the spring is strong, Due to the elasticity of the acting spring, there is a problem that pain occurs in the footpad over time when worn. Further, if the strength of the spring is weakened, there is a possibility that the effect of shock absorption cannot be obtained.

Therefore, the present invention is a type in which a spring as an impact relaxation material is used for a shoe sole, and the spring can be easily attached, can be worn as if it was worn, and stable walking and running can be performed. An object of the present invention is to provide an insole for a shoe that is incorporated in a shoe so that it can be effectively relaxed and an anti-fatigue effect can be obtained.

In order to solve the above-mentioned problems, the present invention provides a shoe insole that is used by being fixed to the upper surface of the outer bottom of a shoe after being incorporated in the shoe, and comprising an insole body, the insole body, the a pedestal separate consists of a compression spring, said insole body, a resilient member which is thicker, and toe-side portion to be a tip end side together planar shape to the planar shape of the outsole of the shoe The structure is divided into a heel portion on the rear end side and an intermediate portion located between the toe side portion and the heel portion, and each lower surface side of the intermediate portion and the heel portion is cut out in stages. The thickness dimension of the intermediate part and the heel part is made smaller than the thickness dimension of the toe side part, and the pedestal has a length dimension in the front-rear direction as a planar shape corresponding to the planar shape of the heel part. It is smaller than the length dimension in the front-rear direction of the lower surface of the flange portion, When the portion is pushed down, it does not interfere with the lower surface of the intermediate portion, and the compression spring expands and contracts vertically between the lower surface of the collar portion of the midsole body and the upper surface of the pedestal. In this way, the collar portion and the pedestal are integrated so as to be integrated .

In the above configuration, the protrusions as spring guides of the required height are opposed to the mounting portions of the compression springs having the upper and lower ends fixed to the lower surface of the collar portion of the insole body and the upper surface of the pedestal, respectively. Provided so that both ends of the compression spring are guided by the projections, or the upper surface of the intermediate portion and the heel portion of the insole body is stepped higher than the upper surface of the toe side portion to increase the height. Saga stepwise differently provided with a step, a configuration in which the respective horizontal state of each upper surface of the toe-side portion and the intermediate portion and the heel portion having a level difference.

According to the insole of the shoe of the present invention, the insole of the shoe is used by being fixed to the upper surface of the outer bottom of the shoe after being incorporated in the shoe, and the insole body and the insole body a pedestal separate consists of a compression spring, said insole body, a resilient member which is thicker, and toe-side portion to be a tip end side together planar shape to the planar shape of the outsole of the shoe, The structure is divided into a heel portion on the rear end side and an intermediate portion located between the toe side portion and the heel portion, and each lower surface side of the intermediate portion and the heel portion is cut out in stages. The thickness dimension of the intermediate part and the heel part is made smaller than the thickness dimension of the toe side part, and the pedestal has a length dimension in the front-rear direction as a planar shape corresponding to the planar shape of the heel part. The length of the lower surface of the portion is smaller than the length dimension in the front-rear direction, and the intermediate portion is pushed together with the flange portion. So that it does not interfere with the lower surface of the intermediate portion when lowered, and the compression spring extends and contracts vertically between the lower surface of the flange portion of the midsole body and the upper surface of the pedestal. Since the heel portion and the pedestal are integrated with each other, the following excellent effects can be obtained.
(1) When walking, running or standing while wearing a shoe with the insole of the present invention incorporated in the shoe, the weight on the heel portion of the insole body The spring attached between the heel portion of the insole body and the pedestal can be compressed by the heel portion of the insole body. At this time, the bottom surface of the intermediate portion and the pedestal do not interfere with each other. The spring acts directly on the body to absorb the impact from the ground, so that the impact to the foot heel can be mitigated, and it is applied to other skeletons such as knees and spine without burdening the foot heel. The load can be reduced.
(2) According to the above (1), the spring deformation is averaged regardless of the posture at the time of landing, the impact is effectively mitigated, and a comfortable wearing feeling and fatigue prevention effect are obtained.
(3) Since the spring is interposed between the midsole body of the insole and the pedestal, the shoe heel raises the outside of the shoe as compared to the spring mounted on the outer bottom of the shoe. It can be made into a shoe for everyday shoes without increasing the thickness of the sole, and can increase the stability during walking and prevent the height from being seen from the appearance. .
(4) Since there is a heel portion of the insole body having elasticity on the spring that directly acts on the heel of the foot, and the spring is compressed through the heel portion, the elasticity of the spring is absorbed by the heel portion. Thus, it is possible to prevent pains from occurring in the footpad due to the elasticity of the spring.
(5) Since the insole body and pedestal that are thick-bottomed are manufactured separately, a compression spring is interposed between the heel part on the back side of the insole body and the pedestal to form an integral structure insole The compression spring is easy to install, and when the compression spring is put into the shoe, the insole can be handled as a single block, and it is easily assembled into the shoe, and the spring is put in the heel part. Can be.
(6) Protrusions are provided on the flange part and the spring mounting part on the pedestal, respectively, so that the expansion and contraction of the spring is guided so that even if the spring is biased and pushed, it follows the projection. Therefore, the spring can be expanded and contracted stably.
(7) The upper surface of the intermediate portion and the heel portion of the insole body are stepped higher than the upper surface of the toe side portion, and steps are provided so that the heights are stepwise different from each other. By making each upper surface of the heel and the heel part horizontal, it is possible to walk and run in a stable posture like a shoe that you can wear, compared to the case where only the heel part is thick. Can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 to FIG. 5 show an embodiment of the present invention. A foot support portion 5 manufactured so as to be attached to a foot is attached to an outer bottom (lower sole) 1 as a shoe sole for grounding a lower surface. those bonded to, in a shoe that is as laid by inserting a thin plate-shaped inner bottom 6 on the inner side of the foot supporting section 5, and a is characteristic write useless set the bottom 7 in a spring-loaded of the present invention It is .

More specifically, the insole 7 of the shoe of the present invention is made of an elastic member such as rubber that is thick and has sufficient cushioning properties, a toe side portion 8 that is the front end side, a heel portion 9 that is the rear end side, and The upper surface of the intermediate portion 10 and the heel portion 9 is stepped higher than the upper surface of the toe side portion 8 by dividing the intermediate portion 10 between the toe side portion 8 and the heel portion 9 and height. Is different from the insole body 7a, a base 11 formed separately from the insole body 7a and having a size corresponding to the flange 9 and a lower end on the upper surface of the base 11 The upper end portion is fixed to the lower surface of the flange portion 9 and the compression spring 12 is interposed between the base 11 and the flange portion 9.

The midsole body 7a of the midsole 7 of the present invention has a planar shape that matches the planar shape of the outer bottom 1, and the toe side portion 8 has the largest thickness, for example, about 40 mm, and the top surface is flat. The bottom surface is configured to be bonded to the top surface of the outer bottom 1 with an adhesive. The intermediate portion 10 and the heel portion 9 are both smaller in thickness than the toe side portion 8, for example, the thickness of the intermediate portion 10 is about 30 mm and the thickness of the heel portion 9 is about 25 mm. The intermediate portion 10 is stepped so that its upper surface is higher than the upper surface of the toe side portion 8 by a required dimension (for example, about 10 mm). Further, the flange portion 9 is provided with a step so that the upper surface is higher than the upper surface of the intermediate portion 10 by a required dimension (for example, about 5 mm). Along with this, each lower surface side of the intermediate portion 10 and the flange portion 9 has a structure that is cut out stepwise, so that a space portion 13 is formed. Furthermore, the upper part of the intermediate part 10 and the part corresponding to the arch of the foot are provided with a bulging part 14 projecting upward in a required dimension, for example, about 5 mm so as to be partially thickened.

The pedestal 11 of the insole 7 has a planar shape corresponding to the planar shape of the flange portion 9 of the insole body 7a , and the length dimension L1 in the front-rear direction is the length of the bottom surface of the flange portion 9 in the front-rear direction. The size is slightly smaller than the dimension L2, and the base 11 does not interfere with the lower surface of the intermediate portion 10 when the intermediate portion 10 is pushed down together with the flange portion 9.

Further, the compression spring 12 of the upper Kifuku number, Yes disposed in a vertical position and fixed to the upper surface of the lower surface and the base 11 of the heel portion 9 of the insole body 7a of the upper and lower ends, the compression spring 12 on the pedestal 11 A heel portion 9 made of a thick cushion material is placed on the upper surface of the rim, so that it can be compressed by receiving a load through the heel portion 9. Projections 15 as columnar navels projecting downward in a required dimension, for example, about 5 mm, at a plurality of locations on the lower surface of the flange 9 that is the mounting portion of the compression spring 12 so that the outer peripheral surface functions as a spring guide Are arranged side by side (horizontal direction). On the upper surface of the pedestal 11, protrusions 16 having the same height and functioning as spring guides are provided side by side so as to face the plurality of protrusions 15 on the flange portion 9 side. The compression spring 12 is optimally elastic, that is, when the weight is applied from the heel of the foot to the heel portion 9 when being used, the compression spring 12 can be compressed without difficulty, and a strong reaction force does not act on the heel when compressed. For example, the length is 25 mm, the outer diameter is 25 mm, and the inner diameter is about 22 mm. Further, one end (upper end) portion of the compression spring 12 is fitted to the outer side of each projection 15 on the lower surface of the flange portion 9 and then embedded and fixed in the flange portion 9, and the other end (lower end) of the compression spring 12. The portion is fitted to each protrusion 16 on the pedestal 11 and then embedded and fixed in the pedestal 11 so that the facing distance between the lower surface of the flange portion 9 and the upper surface of the pedestal 11 is, for example, about 18 to 20 mm. Thus, when the weight acts on the upper surface of the heel portion 9 and pushes down the heel portion 9, even if the direction in which the weight acts is biased, the compression spring 12 does not come off and is not twisted. 15 and 16 are guided so that stable expansion and contraction is possible.

As shown in FIG. 1, the insole 7 of the shoe of the present invention configured as described above is incorporated in the shoe so that it cannot be seen from the outside. At this time, the insole 7 is prepared by separately preparing the insole body 7a, the pedestal 11 and the compression spring 12, and the insole body 7a and the pedestal 11 are connected by the compression spring 12 so as to be integrated. They are easy to manufacture and easy to assemble and can be handled as a single block. When fabricating shoes Ru using the insole 7, as the foot support portions 5, toe-side and higher than the foot support part of any ordinary shoe heel side, i.e., from the lower side peripheral edge to the upper height The shape is made higher by a dimension corresponding to the thickness of the insole 7, and the lower end side peripheral portion of the foot support portion 5 is joined and fixed to the outer bottom 1 by sewing or adhesion. Thereafter, the insole 7 is inserted into the foot support 5 of the shoe and placed on the outer bottom 1, and the lower surface of the toe side portion 8 of the insole body 7 a is bonded to the toe side portion of the outer bottom 1. In addition, the base 11 of the midsole 7 is positioned on the upper surface of the flange portion of the outer bottom 1 and the lower surface thereof is bonded to the outer bottom 1 with an adhesive or the like. Thereby, the insole 7 can be attached to the upper side of the outer bottom 1.

  Further, a thin inner bottom 6 is laid on the upper surface of the midsole body 7a in the foot support part 5, and the lower surface of the inner bottom 6 is joined to the upper surfaces of the heel part 9 and the toe side part 8 of the midsole body 7a, At the raised portion 14 of the intermediate portion 10, the inner bottom 6 is gently raised upward.

  The insole body 7a located on the inner side of the foot support portion 5 has elasticity as a sponge as a whole, and the heel portion 9 and the intermediate portion 10 have a space portion 13 on the lower surface side and are worn. When the body weight is applied, it is necessary to be able to freely move downward when pushed down. For this purpose, as shown in FIG. A slight gap δ is formed so as to allow relative displacement without joining.

Insole of the present invention, as described above, a structure obtained by interposing a plurality of compression springs 12 between the base 11 as a separate body from the heel portion 9 of the bottom body 7a in which are a platform-like Therefore, when the insole 7 of the shoe of the present invention is incorporated in the shoe, it is covered with the foot support 5 and cannot be visually recognized from the outside. Therefore, I do not know that the inside of the shoe is thick, and I can show my height by wearing this shoe, and also when I wear it while walking, running, or standing The impact from the ground can be absorbed by the insole 7, and the impact can be prevented from being transmitted to the heel of the foot.

That is, when walking, running or standing while wearing a shoe in which the insole of the shoe of the present invention is incorporated in the shoe, the toe side portion of the insole 7 is the toe side portion of the shoe. 8, the impact from the ground is relieved, and the impact from the ground is mitigated by the elasticity of the spring 12 and the reed portion 9 in the heel portion, and the transmission to the foot is reduced. At this time, when the spring is mounted on the outer bottom 1 of the shoe and the thin inner bottom is simply placed on the spring, the footpad is placed on the spring for walking or running. When compressing the spring with the toe of the foot, the spring is not always pushed from the upper side in a regular manner. It has been confirmed by the present inventor that pain occurs. In this regard, by using the insole of the present invention, the upper surface of the compression spring 12 incorporated between the heel 9 and the pedestal 11 of the portion of the foot of the heel, the heel comprising a cushioning material in which the required thickness Since there is a portion 9 and the heel portion 9 has a function of absorbing and dispersing the elasticity of the spring 12, even when walking, running or standing for a long time, pain in the heel of the foot It does not occur. Further, projections 15 and 16 having an outer diameter smaller than the inner diameter of each spring 12 are provided on the lower surface of the flange portion 9 and the upper surface of the pedestal 11, respectively, and each spring 12 guides the projections 15 and 16. Since the extension / contraction operation is repeated, even if the way of walking is wrinkled and the weight is biased, it is possible to prevent each spring 12 from being biased obliquely.

In general, the movement of the foot when a person walks is as follows: (1) Landing from the heel, (2) Moving the weight to the outside of the foot, (3) Gradually moving the weight to the inside of the foot, It is a series of “tilting exercises” that support the robot and kick the ground.

Insole of the invention, between the base 11 separate the inner part of the heel of the shoe, a heel portion 9 of the insole body 7a and the insole body 7a when used incorporated in a shoe to become a structure of arranging the spring 12, since the spring 12 when the weight rests on the heel portion 9 are to be compressed, the series of "tilt movement" is performed smoothly put the well-balanced weight on entire foot The load applied to the human body during walking can be reduced. Therefore, although the spring is used in the shoes, the deformation of the spring 12 is averaged regardless of the posture at the time of landing, and the impact can be effectively reduced.

Also, the insole of the shoe of the present invention, when and place in the interior of the shoe, for a platform-like insole 7 of the present invention are not intended to be able to recognize from the outside, wear without resistance even shorty In addition, the outer sole of the shoe can be an ordinary shoe sole that is used daily, and the toe side portion 8 of the insole body 7a is thickened. In addition, since the toes do not stand when worn, stability during walking and running can be maintained.

In the above embodiment, the outer sole 1 is shown as a relatively flat shoe. However, the men's leather shoes with high heels are such that the upper surface of the outer bottom is slightly lowered from the heel toward the toe side. In the case of shoes for women or low heels, the midsole 7 of the present invention is attached to the top surface of the outer bottom so that the top surface of the midsole 7 has a slightly downward slope toward the toe side. In addition to the above, the insole of the shoe of the present invention can be used for various shoes such as sneakers (sports shoes) and golf shoes. Furthermore, although the case where two springs 12 are provided side by side in the left-right direction is shown, two or more springs 12 may be provided. In the embodiment, the dimensions of each part of the insole 7 of the present invention are illustrated, but this is an example, and the present invention is not limited to the numerical values shown here.

It is a partially cutaway side view showing an outline of an embodiment in which the insole of the shoe of the present invention is incorporated in a shoe . It is A arrow sectional drawing of FIG. It is the top view which excised part of the insole of the shoes of this invention. It is a perspective view of the insole of the shoes of this invention. It is B arrow sectional drawing of FIG. It is the schematic which shows the type of shoes which attached the spring to the conventional heel part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer bottom 5 Foot support part 6 Inner bottom 7 Middle bottom 7a Middle bottom main body 8 Toe side part 9 Acupuncture part 10 Middle part 11 Base 12 Compression spring 14 Raised part 15 Projection 16 Projection

Claims (3)

A insole that after incorporation therein shoe to use fixed to the upper surface of the outsole of the shoe, from the midsole body, and the base separate from the intermediate bottom body, a compression spring The insole body is made of a thick elastic member, the toe side portion being the tip side, the heel portion being the rear end side, and the toe side, with the planar shape matching the planar shape of the outer bottom of the shoe It is divided into an intermediate portion located between the portion and the heel portion, and each lower surface side of the intermediate portion and the heel portion is cut out stepwise, and the thickness dimension of the intermediate portion and the heel portion is determined on the toe side. The thickness of the pedestal is smaller than the thickness dimension of the portion, and the length of the pedestal is a planar shape corresponding to the planar shape of the heel portion. When the intermediate part is pushed down together with the flange part, the intermediate part Further, the compression spring is interposed between the lower surface of the collar portion of the midsole body and the upper surface of the pedestal so as to extend and contract in the vertical direction. An insole for a shoe having a structure in which a base is integrated . A insole that after incorporation therein shoe to use fixed to the upper surface of the outsole of the shoe, from the midsole body, and the base separate from the intermediate bottom body, a compression spring The insole body is made of a thick elastic member, the toe side portion being the tip side, the heel portion being the rear end side, and the toe side, with the planar shape matching the planar shape of the outer bottom of the shoe It is divided into an intermediate portion located between the portion and the heel portion, and each lower surface side of the intermediate portion and the heel portion is cut out stepwise, and the thickness dimension of the intermediate portion and the heel portion is determined on the toe side. The thickness of the pedestal is smaller than the thickness dimension of the portion, and the length of the pedestal is a planar shape corresponding to the planar shape of the heel portion. When the intermediate part is pushed down together with the flange part, the intermediate part Further, the compression spring is interposed between the lower surface of the collar portion of the midsole body and the upper surface of the pedestal so as to extend and contract in the vertical direction. The pedestal has a single structure, and further, projections as spring guides of the required height are provided on the mounting portions of the compression springs so as to oppose each other, and both ends of the compression springs are provided by the projections. The above-mentioned insole body, pedestal, and compression spring are incorporated into the shoe, and the toe side portion of the insole body and each lower surface of the pedestal are fixed to the upper surface of the outer bottom. The insole of the characteristic shoes. Steps are provided so that the upper surface of the intermediate part and the heel part of the insole body are stepwise higher than the upper surface of the toe side part, and the heights are stepwise different from each other. The insole of the shoe according to claim 1 or 2, wherein each upper surface of the portion is in a horizontal state.

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