JP3213495U - shoes - Google Patents

Abstract

[PROBLEMS] To provide a shoe that can be easily walked by a person who has a poor ankle and is difficult to balance, or who is in a state where balance is difficult to balance. SOLUTION: A structure comprising a shoe main body portion 19 that wraps and covers a person's foot, and a fluid bag portion 13 that is provided in a shoe bottom portion 12 of the shoe main body portion 11 and has a fluid built therein and can be deformed up and down. It is said that. [Selection] Figure 1

Description

  The present invention relates to a shoe and relates to a shoe that can be easily walked.

  Conventionally, people who do not move their ankles well, especially because their feet are bad, will not be able to walk more easily if they wear shoes, as well as bare feet. was there.

  Moreover, even a healthy person who does not have a bad foot may become difficult to walk because his ankle motion becomes dull when he gets tired.

  Furthermore, in places with poor scaffolding, it is difficult for anyone to balance their bodies and to walk.

  Although research to make walking easy has been made, there are few solid proposals.

  For example, Patent Document 1 discloses a walking support device that is provided on a shoe sole and assists walking.

  The walking support device disclosed in Patent Document 1 certainly makes it easy to walk, but rather, by using the elastic energy of the spring when walking, such as a person with weak legs , To promote walking.

  However, it is appropriate for people who cannot walk easily even if they wear their shoes, especially when their ankles do not move well, especially when they make their feet worse. It is not a good technology.

JP 2012-143365 A

  The present invention is intended to solve the conventional problems as described above, and the problem is that people who have poor ankles and are difficult to balance or those who are difficult to balance can easily walk. It is to provide shoes that can be performed.

In order to solve the above-mentioned problem, the device according to claim 1 is provided in a shoe main body portion that wraps and covers a person's foot, and a shoe sole portion of the shoe main body portion. And a fluid bag part that is deformable.
Therefore, when the person wearing this shoe moves forward and walks, the fluid bag part gradually contacts the ground and gradually sinks from the toe side as the weight is applied from the heel side to the toe side. Is gradually lifted, and when the upper surface of the fluid bag part inclines forward and starts walking, the fluid bag part gradually sinks from the heel side when landing, and gradually lifts from the toe side, and the fluid bag part The upper surface of the glass is inclined rearward and deforms like a seesaw that repeats these alternately.

In the invention according to claim 2, the fluid bag portion includes a front side portion and a rear side portion of the shoe sole portion, and the front side portion and the rear side portion of the fluid inside by connecting them in the middle. And a bypass part that enables the flow between them.
Therefore, when a person wearing these shoes moves forward and walks, the fluid bag portion gradually contacts the ground with the bypass portion as the center and gradually gains weight from the toe side as the weight is applied from the heel side to the toe side. When the upper surface of the fluid bag portion tilts forward and starts walking, the fluid bag portion gradually moves from the heel side around the bypass portion when landing. It sinks and gradually lifts from the toe side, and the upper surface of the fluid bag portion inclines to the rear side, and deforms more reliably like a seesaw that repeats these alternately.

In the invention according to claim 3, the bypass portion is formed narrower than the front side portion and the rear side portion, and on both sides in the width direction of the bypass portion, than the fluid bag portion. The spacer has a high strength and is provided with a spacer portion that supports the front side portion, the rear side portion, and the bypass portion from the side.
Therefore, the strength is higher than that of the fluid bag portion, and the spacer portion that supports the front side portion, the rear side portion, and the bypass portion from the side contacts the ground at the time of deformation such as a seesaw of the fluid bag portion. A fulcrum.

The invention according to claim 4 is characterized in that a groove having a bellows shape or a V-shaped cross section is formed in the circumferential surface of the fluid bag portion along the circumferential direction.
Therefore, even when the fluid bag portion is hard to wear and is made of a relatively hard material, the fluid bag portion is easily deformed up and down by the bellows-like or V-shaped groove.

The invention according to claim 5 is characterized in that an inlet / outlet through which the fluid can be taken in and out is provided on a peripheral surface of the fluid bag portion.
Accordingly, the amount of the fluid in the fluid bag portion can be variously adjusted from the entrance / exit.

The invention according to claim 6 is characterized in that the inlet / outlet port is provided with a backflow prevention valve in a hole communicating the inside and the outside of the fluid bag portion.
Therefore, if the fluid is injected from the hole into the fluid bag portion by a fluid injector, the amount of the fluid becomes a desired amount, the state is maintained by the backflow prevention valve, and the amount of the fluid is excessive. In such a case, a pipe or the like can be inserted into the hole, and the excess of the fluid can be discharged.

The invention according to claim 7 is characterized in that the fluid is air.
Therefore, the air is around us and can be used freely for free.

In the shoe according to claim 1, a shoe main body part that wraps and covers a person's foot, a fluid bag part that is provided in a shoe bottom part of the shoe main body part, contains fluid therein, and can be deformed up and down It is set as the structure provided with.
Therefore, when the person wearing this shoe moves forward and walks, the fluid bag part gradually contacts the ground and gradually sinks from the toe side as the weight is applied from the heel side to the toe side. Is gradually lifted, and when the upper surface of the fluid bag part inclines forward and starts walking, the fluid bag part gradually sinks from the heel side when landing, and gradually lifts from the toe side, and the fluid bag part The upper surface of the glass is inclined rearward and deforms like a seesaw that repeats these alternately.
As a result, when the person wearing the shoes moves forward and walks, the fluid bag portion gradually sinks from the toe side as the body touches the ground and the weight is applied from the heel side to the toe side. The fluid bag part gradually sinks from the heel side when landing, and gradually rises from the toe side when landing, and the fluid bag part gradually rises from the toe side. Since the upper surface of the part is inclined rearward and deforms like a seesaw that repeats these alternately, even if you can not use the ankle well, it becomes a stable posture suitable for walking, the ankle is bad and difficult to balance, People who are in a difficult state of balance can also walk easily.

In the shoe according to claim 2, the fluid bag portion includes a front side portion and a rear side portion of the shoe sole portion, and the front side portion and the rear side portion of the fluid inside by connecting them in the middle. And a bypass part that enables flow between them.
Therefore, when a person wearing these shoes moves forward and walks, the fluid bag portion gradually contacts the ground with the bypass portion as the center and gradually gains weight from the toe side as the weight is applied from the heel side to the toe side. When the upper surface of the fluid bag portion tilts forward and starts walking, the fluid bag portion gradually moves from the heel side around the bypass portion when landing. It sinks and gradually lifts from the toe side, and the upper surface of the fluid bag portion inclines to the rear side, and deforms more reliably like a seesaw that repeats these alternately.
As a result, when a person wearing this shoe moves forward and walks, the fluid bag part comes into contact with the ground with the bypass part as the center, and the weight is applied from the heel side to the toe side. Slowly sink, gradually lift from the heel side, and when the upper surface of the fluid bag portion inclines forward and starts walking, the fluid bag portion gradually reaches from the heel side around the bypass portion when landing. It sinks in, gradually lifts up from the toe side, and the upper surface of the fluid bag part is inclined rearward, so that it deforms more reliably like a seesaw that repeats these alternately, so even if the ankle can not be used well, it is suitable for walking Therefore, even a person who has a poor ankle and is difficult to balance, or a person who is difficult to balance, can walk more easily.

In the shoe according to claim 3, the bypass portion is formed narrower than the front side portion and the rear side portion, and on both sides in the width direction of the bypass portion, than the fluid bag portion. A spacer portion is provided that has high strength and supports the front side portion, the rear side portion, and the bypass portion from the side.
Therefore, the strength is higher than that of the fluid bag portion, and the spacer portion that supports the front side portion, the rear side portion, and the bypass portion from the side contacts the ground at the time of deformation such as a seesaw of the fluid bag portion. A fulcrum.
As a result, the strength is higher than that of the fluid bag part, and the spacer part that supports the front side part, the rear side part, and the bypass part from the side is a ground at the time of deformation like a seesaw of the fluid bag part. Even if you can't use your ankle well, it becomes a more stable posture suitable for walking, even if you have a poor ankle and it is difficult to balance, and people who are in a state where it is difficult to balance also walk more It can be done easily.

In the shoe according to claim 4, a bellows-like or V-shaped groove is formed along the circumferential direction on the peripheral surface of the fluid bag portion.
Therefore, even when the fluid bag portion is hard to wear and is made of a relatively hard material, the fluid bag portion is easily deformed up and down by the bellows-like or V-shaped groove.
As a result, even when the fluid bag portion is hard to wear out and is made of a relatively hard material, the bellows-like or V-shaped groove is easily deformed up and down. Even a person who is in a state where it is difficult to balance can maintain the effect of being able to walk easily, and the service life of the fluid bag portion can be extended.

In the shoe according to claim 5, an inlet / outlet through which the fluid can be taken in and out is provided on a peripheral surface of the fluid bag portion.
Accordingly, the amount of the fluid in the fluid bag portion can be variously adjusted from the entrance / exit.
As a result, since the amount of the fluid in the fluid bag portion can be variously adjusted from the entrance / exit, the amount of the fluid in the fluid bag portion can be easily walked by a person wearing this shoe. The amount can be adjusted individually.

In the shoe according to claim 6, a backflow prevention valve is provided in the hole for communicating the inside and the outside of the fluid bag portion at the entrance / exit.
Therefore, if the fluid is injected from the hole into the fluid bag portion by a fluid injector, the amount of the fluid becomes a desired amount, the state is maintained by the backflow prevention valve, and the amount of the fluid is excessive. In such a case, a pipe or the like can be inserted into the hole, and the excess of the fluid can be discharged.
As a result, if the fluid is injected into the fluid bag portion from the hole by a fluid injector, the amount of the fluid becomes a desired one, the state is maintained by the backflow prevention valve, and the amount of the fluid is reduced. If it is excessive, a pipe or the like can be inserted into the hole and the excess of the fluid can be adjusted so that the amount of the fluid can be easily adjusted individually so that the ball air can be introduced. It can be an amount.

In the shoe according to claim 7, the fluid is air.
Therefore, the air is around us and can be used freely for free.
As a result, since air is around and can be used freely for free, the manufacturing cost can be reduced and the amount can be easily adjusted.

FIG. 1 is a side view showing a schematic configuration of a shoe according to an embodiment of the present invention. FIG. 2 is a bottom view showing a schematic configuration of a shoe according to an embodiment of the present invention. Fig.3 (a) is a side view which shows schematic structure of the member used for the spacer part of the shoe of embodiment of this invention, FIG.3 (b) is a bottom view of the member. FIG. 4 is a view showing a deformed state when a person wearing the shoes of the embodiment of the present invention puts weight on the toe side. FIG. 3 is a diagram illustrating a deformed state when a person wearing the shoes of the embodiment of the present invention puts weight on the heel side.

  Hereinafter, shoes according to the present invention will be described based on embodiments with reference to the drawings.

First, the configuration of the embodiment will be described.
1-5 has shown schematic structure of the shoes 10 of embodiment of this invention.

  As shown in FIG. 1, the shoe 10 of this embodiment is provided in a shoe main body 11 that wraps and covers a person's foot, and a shoe sole 12 of the shoe main body 11. The deformable fluid bag portion 13 is provided.

  More specifically, in the shoe 10, as shown in FIG. 2, the fluid bag portion 13 is formed by connecting the front side portion 14 and the rear side portion 15 of the shoe bottom portion 12 to the front side of the internal fluid by connecting them in the middle. And a bypass portion 16 that enables flow between the portion 14 and the rear side portion 15.

  The fluid bag portion 13 is formed in the same planar shape as the bottom surface shape of the shoe sole portion 12 of the shoe main body portion 11, and is formed with a thickness dimension larger than the thickness dimension of the shoe sole of a conventional ordinary shoe or sneaker. ing.

  The bypass portion 16 is provided in the arch portion 24 between the front side portion 14 and the rear side portion 15 so as to be narrower than the front side portion 14 and the rear side portion 15 at the center portion in the width direction of the arch portion 24, and on both sides in the width direction. Notches 25, 25 are formed in the part.

  Here, the fluid flowing inside the front side portion 14 and the rear side portion 15 constituting the fluid bag portion 13 and the bypass portion 16 connecting them is air 22.

  In addition, between the shoe sole part 12 of the shoe main body part 11 and the upper surface of the fluid bag part 13 is firmly fixed by means such as sewing or an adhesive.

  Further, the notches 25, 25 formed on both sides in the width direction of the bypass portion 16 have higher strength than the fluid bag portion 13, and support the front side portion 14, the rear side portion 15 and the bypass portion 16 from the side. Portions 17 and 17 are provided.

  In addition, as shown in FIGS. 3A and 3B, members having a U-shaped cross section are used for the spacer portions 17 and 17.

  The spacer portions 17 and 17 are arranged so that the distal end portion 27 is substantially flush with the ground contact surface 28 of the fluid bag portion 13 by fixing the fixing portions 26 and 26 to the shoe sole portion 12 by means such as an adhesive. The

  Here, the spacer parts 17 and 17 are made of PET resin.

  Further, as shown in FIG. 1, bellows-like grooves 18 and 18 are formed in the circumferential surface of the fluid bag portion 13 along the circumferential direction.

  Accordingly, when the weight is applied to the toe side, the fluid bag portion 13 is deformed so that the upper surface thereof is inclined forward with respect to the ground 23 together with the shoe bottom portion 12 of the shoe main body 11 as shown in FIG. When weight is applied to the side, as shown in FIG. 5, the upper surface of the shoe main body 11 is deformed so as to be inclined rearward with respect to the ground 23 together with the shoe bottom 12.

  Although the spacer portions 17 and 17 have higher strength than the fluid bag portion 13, as shown in FIGS. 4 and 5, the distal end portion 27 of the spacer portion 17 and 17 does not interfere with the above-described deformation. It is designed to follow the deformation of the.

  Further, as shown in FIG. 1 and FIG. 2, an inlet / outlet port 19 of the air 22 through which the air 22 as a fluid can be taken in and out is provided at the rear end portion of the fluid bag portion 13.

  Further, as shown in FIG. 2, a backflow prevention valve 21 is provided at the inlet / outlet port 19 of the air 22 in a hole 20 that communicates the inside and the outside of the fluid bag portion 13.

  Here, the backflow prevention valve 21 is provided in a state in which the hole 20 is closed by a flexible portion 21a having flexibility and restoring force at one end of the opening portion inside the fluid bag portion 13 of the hole 20. If air 22 as fluid from 20 is injected into the fluid bag portion 13 by air injection as a fluid injector (not shown), the amount of air 22 as fluid becomes a desired amount, and the backflow prevention valve 21 is allowed. The state returns to the state of closing the hole 20 by the restoring force of the flexure 21a, and the state is maintained.

  In addition, when the amount of air 22 as fluid is excessive, it is possible to adjust the exhaust of the excess air 22 as fluid by inserting a tube (not shown) into the hole 20. After the extraction, the backflow prevention valve 21 returns to the state of closing the hole 20 by the restoring force of the flexible portion 21a, and this state is maintained.

  That is, the air 22 as the fluid inside the fluid bag portion 13 can be adjusted in the same manner as the procedure for adjusting the amount of air inside the ball.

  Next, the function and effect of this embodiment will be described.

  As shown in FIGS. 1 to 5, the shoe 10 according to the embodiment of the present invention is provided on a shoe main body portion 11 that wraps and covers a person's foot and a shoe bottom portion 12 of the shoe main body portion 11. The air bag 22 is built in, and the fluid bag portion 13 can be deformed up and down.

  Accordingly, when a person wearing this shoe 10 moves forward and walks, the fluid bag portion 13 touches the ground 23 and gradually sinks from the toe side as the weight is applied from the heel side to the toe side. As shown in FIG. 4, when the upper surface of the fluid bag portion 13 is inclined forward together with the shoe bottom portion 12 of the shoe main body portion 11 and starts walking, the fluid bag portion 13 is As shown in FIG. 5, the upper surface of the fluid bag portion 13 is inclined rearward together with the shoe sole portion 12 of the shoe main body portion 11 and repeats alternately. Deforms like a seesaw.

  That is, when the shoe 10 is worn, the shoe 10 is first in the state of FIG. 5, and then the weight is moved in the toe direction to reach the state of FIG. 4.

  As a result, when the person wearing this shoe 10 walks forward, when the shoe 10 is worn, the shoe 10 is first in the state of FIG. 5, and then the weight moves in the toe direction. It reaches the state of 4 and deforms like a seesaw which repeats these alternately, so even if the ankle is not used well, it becomes a stable posture suitable for walking, the ankle is bad and difficult to balance, and it is difficult to balance People who are in a state can also walk easily.

  When the shoes 10 are worn on both feet, the deformation of the fluid bag portion 13 such as a seesaw during walking is reversed between the left and right feet, and the balance is achieved.

  More specifically, the fluid bag portion 13 includes a front side portion 14 and a rear side portion 15 of the shoe sole portion 12 and a front side portion 14 and a rear side portion 15 of air 22 as an internal fluid by connecting them in the middle. And a bypass part 16 that enables flow between them.

  Therefore, when the person wearing this shoe 10 walks forward, the fluid bag portion 13 contacts the ground 23 with the bypass portion 16 as the center, and the weight increases from the heel side to the toe side. When the upper surface of the fluid bag portion 13 inclines forward with the shoe bottom portion 12 of the shoe main body portion 11 and begins to walk as shown in FIG. When landing, the part 13 gradually sinks from the heel side around the bypass part 16 and gradually lifts from the toe side, and the upper surface of the fluid bag part 13 is the shoe of the shoe body part 11 as shown in FIG. It inclines to the rear side together with the bottom 12 and deforms more reliably like a seesaw that repeats these alternately.

  As a result, when the person who wears the shoes 10 walks forward, the fluid bag 13 contacts the ground 23 with the bypass 16 as the center, and the toe as the weight is applied from the heel side to the toe side. When the upper surface of the fluid bag part 13 inclines forward together with the shoe bottom part 12 of the shoe main body part 11 and begins to walk as shown in FIG. At the time of landing, the bag portion 13 gradually sinks from the heel side around the bypass portion 16 and gradually lifts from the toe side. As shown in FIG. Even if the ankle can not be used well, the posture is more stable for walking, and the ankle is poorly balanced. Difficult people and to take, people to be placed to take difficult state of balance, it is possible to carry out walking more comfortably.

  Here, as shown in FIG. 2, the bypass portion 16 is formed to be narrower than the front side portion 14 and the rear side portion 15, and on both sides in the width direction of the bypass portion 16, than the fluid bag portion 13. Spacers 17 and 17 are provided which are strong and support the front side portion 14, the rear side portion 15 and the bypass portion 16 from the side.

  Therefore, the strength of the fluid bag portion 13 is higher, and the spacer portions 17 and 17 that support the front side portion 14, the rear side portion 15, and the bypass portion 16 from the side are ground when the fluid bag portion 13 is deformed like a seesaw. It becomes a fulcrum in contact with 23.

  As a result, the strength of the fluid bag portion 13 is higher, and the spacer portions 17 and 17 that support the front side portion 14, the rear side portion 15, and the bypass portion 16 from the side are deformed like a seesaw of the fluid bag portion 13. Because it is a fulcrum that touches the ground 23, even if the ankle is not used well, it becomes a more stable posture suitable for walking, and even if the ankle is bad and difficult to balance, people who are in a state where it is difficult to balance can also walk Can be performed even more easily.

  Here, as shown in FIG. 3, members having a U-shaped cross section are used for the spacer portions 17 and 17.

  Therefore, when walking, the arch portion 24 prevents the sinking due to the weight of the bypass portion 16 because the spacer portions 17, 17 abut against the ground 23, and air as a fluid between the front side portion 14 and the rear side portion 15. In addition to securing the flow of 22, the spacer portions 17, 17 themselves also receive an impact input from the ground 23 by walking and the tip portion 27 absorbs deformation by expanding the fixing portions 26, 26. 16 and the cushioning property can be maintained.

  As a result, when walking, the arch portion 24 prevents the sinking due to the weight of the bypass portion 16 because the spacer portions 17, 17 abut against the ground 23, and as a fluid between the front side portion 14 and the rear side portion 15. Since the flow of the air 22 can be secured and the spacer portions 17 and 17 themselves also receive an impact input from the ground 23 by walking, the tip portion 27 receives the deformation and the fixing portions 26 and 26 expand and absorb the deformation. The portion 16 can be prevented from collapsing, and the flow of the air 22 between the front side portion 14 and the rear side portion 15 can be secured, and the cushioning property can be maintained, so that the fluid bag portion 13 can be deformed like a seesaw. While fulfilling the function as a fulcrum in contact with the ground 23, the sense of stability during walking can be further increased.

  Further, bellows-like grooves 18 and 18 are formed in the circumferential surface of the fluid bag portion 13 along the circumferential direction thereof.

  Therefore, even when the fluid bag portion 13 is hard to wear out and is made of a relatively hard material, the bellows-like grooves 18 and 18 are easily deformed up and down.

  As a result, even when the fluid bag portion 13 is hard to wear off and is made of a relatively hard material, the bellows-like grooves 18 and 18 are easily deformed up and down. A person who is difficult to remove can also extend the service life of the fluid bag portion 13 while maintaining the effect of being able to walk easily.

  Further, an inlet / outlet port 19 through which air 22 as a fluid can be taken in and out is provided on the rear side of the peripheral surface of the fluid bag portion 13.

  Accordingly, the amount of the air 22 as the fluid in the fluid bag portion 13 from the inlet / outlet port 19 can be variously adjusted.

  As a result, the amount of air 22 as fluid in the fluid bag portion 13 can be adjusted in various ways from the inlet / outlet port 19, so that the shoe 10 is worn with the amount of air 22 as fluid in the fluid bag portion 13. The amount can be adjusted individually so that a person can walk most easily.

  Further, as shown in FIG. 2, the inlet / outlet port 19 is provided with a backflow prevention valve 21 in a hole 20 that communicates the inside and the outside of the fluid bag portion 13.

  Therefore, if air 22 as a fluid is injected into the fluid bag portion 13 from the hole 20 by entering air as a fluid injector (not shown), the amount of air as a fluid becomes desired, and the backflow prevention valve 21 When the state is maintained and the amount of the air 22 as the fluid is excessive, a pipe or the like (not shown) can be inserted into the hole 20 and the excess of the air 22 as the fluid can be discharged.

  As a result, if air 22 as fluid is injected from the hole 20 into the fluid bag portion 13 by air injection as a fluid injector, the amount of air 22 as fluid becomes a desired amount. If the state is maintained and the amount of air 22 as fluid is excessive, a pipe or the like can be inserted into the hole 20 to adjust the discharge of excess air 22 as fluid. The amount of air 22 can easily be individually tailored to contain the ball air.

  Therefore, a pipe used for a commercially available ball or the like may be used as an air inlet / outlet pipe as a fluid injector for adjusting the amount of air 22 as a fluid inside the fluid bag portion 13. It is possible and convenient.

  Further, the fluid inside the fluid bag portion 13 is air 22.

  Therefore, the air is around us and can be used freely for free.

  As a result, since air is around and can be used freely for free, the manufacturing cost can be reduced and the amount can be easily adjusted.

  The embodiment of the shoe according to the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are not limited to this embodiment. Included in the idea.

  For example, in the above-described embodiment, although not specified, in the case of a person who is bad only on one foot, the shoe 10 to be worn on the foot that is not bad is the inner part of the shoe so that the deformation of the fluid bag portion 13 does not occur so much. If a large amount of air 22 is used as a fluid, the balance may be easily obtained during walking.

  In the above-described embodiment, the groove 18 provided on the peripheral surface of the fluid bag portion 13 has a bellows shape. However, the present invention is not limited to this, and the groove 18 may have a V-shaped cross section.

  Furthermore, in the above-described embodiment, the fluid inside the fluid bag portion 13 is air. However, the present invention is not limited to this, and other fluids may be used.

  The shoes according to the present invention can be widely used as shoes that can be easily walked even by people who have poor ankles and who are difficult to balance or who are in a difficult state of balance. It has sex.

DESCRIPTION OF SYMBOLS 10 Shoes 11 Shoe body part 12 Shoe bottom part 13 Fluid bag part 14 Front side part 15 Rear side part 16 Bypass part 17 Spacer part 18 Groove 19 Entrance / exit 20 Hole 21 Backflow prevention valve 21a Flexible part 22 Air (fluid)
23 Ground 24 Arch part 25 Notch part 26 Fixing part 27 Tip part 28 Grounding surface

Claims (7)

  A shoe comprising: a shoe body part that wraps and covers a person's foot; and a fluid bag part that is provided on a shoe bottom part of the shoe body part and contains fluid therein and is deformable up and down.   The fluid bag portion includes a front side portion and a rear side portion of the shoe sole portion, and a bypass portion that connects these in the middle to allow a flow between the front side portion and the rear side portion of the fluid inside. The shoe according to claim 1, further comprising:   The bypass portion is formed to be narrower than the front side portion and the rear side portion, and has strength higher than that of the fluid bag portion on both sides in the width direction of the bypass portion. The shoe according to claim 2, wherein a spacer portion is provided to support the portion and the bypass portion from the side.   The shoe according to any one of claims 1 to 3, wherein a groove having a bellows shape or a V-shaped cross section is formed on a circumferential surface of the fluid bag portion along a circumferential direction thereof.   The shoe according to any one of claims 1 to 4, wherein an inlet / outlet through which the fluid can be taken in and out is provided on a peripheral surface of the fluid bag portion.   The shoe according to claim 5, wherein the entrance / exit is provided with a backflow prevention valve in a hole communicating the inside and the outside of the fluid bag portion.   The shoe according to any one of claims 1 to 6, wherein the fluid is air.