JP3036281U - Sandals with air cushioning properties - Google Patents

Abstract

(57) [Summary] [Purpose] Not only is the upper surface of the sandal table finished to be flexible, but the soles also feel flexibility and pressure, and changes in that flexibility and pressure. Provide sandals to do. [Structure] A flat air bag 3 made of a material having an appropriate elasticity is attached to the upper surface of the sandal stand 1 so that the sole of the foot can ride on the flat air bag 3, and the weight of the air bag can be partially applied to the air bag. When that part is depressed, the internal pressure increases and,
The other part was configured to expand.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a sandal in which the sole absorbs and relaxes the impact force received from the upper surface of the sandal stand while walking, and the cushioning effect applied to the sole changes.

[0002]

[Prior art]

 When putting on your sandals and walking, when you put your feet forward, your toes should be raised. Along with that, the contact area on the sole gradually shifts to the front, and eventually the foot becomes in a state of riding on the sandals, and the whole sole touches the table surface and the whole weight is applied to it. Then, when the body further advances, the center of gravity also shifts forward, the legs are raised from the heel in order, and finally the weight shifts to the opposite leg, and this leg rises from the platform. It is put forward again with sandals. In this way, when walking while wearing sandals, the person's feet can climb onto the sandals, so the upper surface of the sandal stand is covered with a flexible sheet material, or cushioning properties such as EVA continuous foam are provided. It is formed by using a material that has a material such as the above to absorb and relax the impact force that the sole receives from the upper surface of the sandal stand. In addition, a number of protrusions are formed on the upper surface of the sandal stand at the positions corresponding to the acupressure points on the soles of the feet, and when walking, these push the acupoints on the soles of the feet to obtain the effect of acupressure. Is also used.

[0003]

[Problems to be solved by the device]

 As described above, in the conventional sandals, since the upper surface of the sandal table has appropriate flexibility and cushioning properties, the impact force on the sole of the foot is absorbed and relaxed. However, the effect is only the so-called cushioning effect, which is caused by the lowering of the upper surface in proportion to the weight added to the sandal stand, and the feeling is that the bottom is soft like sneakers and it makes walking a long time. It's almost the same as wearing the right shoes. However, sandals are easy to use in place of shoes, and when there is no upper skin, the ankles are exposed, and when the feet are lifted, the soles of the feet are separated from the sandal stand, which is a long distance. It is not used for walking, and most of it is used as indoor or indoor footwear. Therefore, there is a problem in that a sandal that is simply provided with flexibility and cushioning properties that allow the sandal stand to walk for a long distance is not always suitable as a sandal. Due to these reasons, in recent years, not only the upper surface of the sandal stand has been finished to be flexible, but also the soles feel flexibility and pressure, and the flexibility and pressure change. Development of sandals was desired.

[0004]

[Means for Solving the Problems]

 The sandal according to the present invention solves the above-mentioned conventional problems by attaching a flat air bag whose inner pressure is adjusted to 1 to 1.5 atmospheric pressure to the sandal stand and allowing the sole of the foot to ride on it. The air bag can be configured to have almost the same shape as the upper surface of the sandal stand, and the upper surface can be covered with the air bag. The air bag can be attached to the sandal table at an appropriate position on the upper surface to partially press the sole of the foot. By forming the air bag using a material having an appropriate elasticity, the air bag itself can be configured to act as a cushioning material for the sole.

[0005]

[Action]

 According to the present invention, when the foot is stepped forward, the weight is first applied to the heel side portion of the air bag. Then, this portion of the air bag is recessed, and the air in the bag is pushed forward. Then, as a person moves forward and the weight of the air bag moves forward, the weight of the air bag is increased, and the recessed area becomes wider, and the air pressure of the front part increases and swells up. You will feel pressure from the bottom of your feet. When the weight moves further forward, the weight is also applied to the toe side of the air bag, and when the weight applied to the heel side part is reduced by that amount, the air pushed in the front part moves to the rear part. Begin to. When the weight of the back side of the air bag becomes smaller than the weight of the front side of the air bag, the back portion of the air bag swells, and the sole of the foot in contact with this portion feels pressure from below.

[0006]

【Example】

 Hereinafter, a sandal having an air cushioning property according to the present invention will be specifically described with reference to the illustrated embodiment. In this embodiment, the sandal comprises a sandal stand 1, a band 2 and an air bag 3. This sandal is almost the same as the normal one except that the air bag 3 is attached to the sandal base 1. The sandal base 1 is made of soft vinyl chloride resin or EVA continuous air bubbles. It is formed using the body and has band 2 attached to it. Further, in this embodiment, the top plate 4 is attached to the sandal stand 1, and the air bag 3 is made of a vinyl chloride resin having an appropriate elasticity. It is configured by joining, and when a part is pressed with a force of about 1 to 5 kg, the part is recessed until it reaches the bottom of the bag (top plate 4 in this embodiment). The air bladder 3 is a flat body having a thickness of about 5 to 15 mm, the internal pressure is adjusted to about 1 to 1.5 atm, and each portion can be recessed or inflated.

Therefore, when only a narrow range (portion A in the figure) of the air bag 3 is compressed, that portion is dented, the air at that position is transferred to another portion, and that portion is inflated. As a body, the internal volume hardly changes, and therefore the internal pressure hardly changes (FIG. 2). However, as the compressed area becomes wider, the amount of decrease in the internal volume due to the depression of that part is smaller than the amount of increase in the internal volume due to the expansion of other parts. The apparent inner volume of the air bladder 3 decreases, and the inner pressure increases accordingly. For example, when the parts A and B in the figure are pressed, the upper surface of the bag is dented until it reaches the bottom surface, and the air at that position moves to other parts (the parts C, D and E in the figure), Although that part inflates, the increase in the internal volume due to this is smaller than the decrease in the internal volume of A and B, so the apparent internal volume of the air bladder 3 decreases by that amount, and C Parts D, E have high internal pressure. When the range of pressing the air bladder 3 further expands and the portions A, B and C in the figure are pressed, the inner pressure of the air bladder 3 becomes higher and the inner pressure is the unit of the portions A, B and C. It becomes larger than the pressing force per area, and the upper surface of that part of the air bag 3 does not reach the bottom surface. Therefore, the foot is in a state of riding on the air bag of the internal pressure, and the sole of the foot feels the cushioning property of the internal pressure. When the pressing portion for the air bag 3 moves further forward and the pressing force for the rear portion disappears, the front portion of the bag is recessed and the rear portion is inflated.

In addition, in this embodiment, the air bag 3 is formed in the shape of a saucer by forming the elastic supplement ribs 32 at several places of the air bag 3, and the peripheral wall portion is compressed by the elasticity of the material. While it exerts an appropriate resistance to the force, it does not exert its resistance in the central part, so it corrects the point that it is easily dented, and it shows an almost uniform elasticity as a whole. It is done.

FIG. 3 shows an example in which air bags 5 and 6 are attached to the part of the foot where the heel hits and the part where the base of the finger hits. Although the structure and function of the air bags 5 and 6 are the same as those shown in FIG. 1, in this embodiment, the air bags are not formed by joining the top members 51 and 61 to the top plate 4, but on the bottom surface. Formed by joining to the sheets 52 and 62, on the other hand, the top plate 4 is cut out at the portion where the air bag is attached, and the air bags 5 and 6 are made to project the respective upper surface members 51 and 61 from the cutout portions. Attached to this by. In this case, if the upper surface members 51 and 61 are made of a transparent material and the bottom surface sheets 52 and 62 are appropriately colored, the sandals are rich in color. In this sandal, it is expected that the air bladder 6 mainly exerts a cushioning effect on the heel of the foot, and the air bladder 5 exerts a soft acupressure effect on a part of the base of the finger.

FIG. 5 shows that two air bags 5 and 6 are connected by a thin ventilation pipe 7 so that air moves between them, and the apparent amount of increase or decrease of air in each air bag is formed. It shows an example of a larger size. That is, in this embodiment, when the heel is placed on the air bladder 6, the air therein is pushed through the ventilation pipe 7 into the air bladder 5, and the air bladder 6 is almost not filled with air. While the air bag 5 is inflated so that the same amount of air is press-fitted. Therefore, the base of the toes rides on the inflated air bag 5. Then, when the weight is applied to this, the bag 5 is gradually recessed, and the air is pushed into the air bag 6. It is desirable that the ventilation pipe 7 be formed thin so that it takes at least 0.1 second to recess the air bag 5 from the inflated state to the normal state.

[00011]

[Effect of the invention]

 As described in detail above, according to the present invention, when a person wears sandals and walks, the heel first comes into contact with the sandal table and the weight is applied to the table, and the contact area of the sole of the foot gradually moves forward as the body moves forward. When the body moves forward further, the center of gravity of the body shifts to the front, and the legs are raised in order from the heel. A flat air bladder made of a material with excellent elasticity is attached, and when you step forward, your weight is first applied to the heel side of the air bladder, and this part of the air bladder is The air in the dent and bag is pushed forward, and the air pressure at the front increases and swells up, and the soles of the feet that try to ride on this feel pressure from below. Then, as the weight moves further forward, the weight is also applied to the toe side of the air bag, and when the weight applied to the heel side part is reduced by that amount, the air pushed into the front part is rearward. When the weight on the back side of the air bag becomes smaller than that on the front side of the air bag, the back part of the air bag bulges and the sole of the foot in contact with this part feels pressure from below. Become. Therefore, there is an advantage that the sole of the foot receives an extremely peculiar sensation like riding on a cushioning material having a varying cushioning property, and a soft acupressure effect is obtained.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of a sandal having an air cushioning property according to the present invention.

FIG. 2 is a vertical cross-sectional side view showing an example of the above-mentioned usage state.

FIG. 3 is a partially cutaway plan view showing another embodiment of sandals having an air cushioning property according to the present invention.

FIG. 4 is an exploded vertical side view of the same.

FIG. 5 is a partially cutaway plan view showing another embodiment of sandals having an air cushioning property according to the present invention.

[Explanation of symbols]

 1 Sandal stand 2 Band 3 Air bag 4 Top plate 5 Air bag 6 Air bag 7 Air bag 7 Vent pipe 31 Top member 32 Elastic replenishment rib 51 Top member 61 Top member 52 Bottom sheet 62 Bottom sheet

Claims (4)

[Utility model registration claims] 1. A sandal having an air cushioning property, in which a flat air bag having an internal pressure adjusted to about 1 to 1.5 atmospheres is attached to the upper surface of a sandal stand. 2. The air cushioning property according to claim 1, wherein the air bag is formed by joining an upper surface member shaped like a saucer plate to a top plate by using a material having an appropriate elasticity. Sandals to have. 3. The air bladder is formed by joining a bottom plate with a bottom plate, which is shaped like a saucer using a material having an appropriate elasticity, and the top plate has substantially the same plane shape as the top member. The sandal having an air cushioning property according to claim 1, wherein the sandal is attached to the top plate by notching the shape and projecting the upper surface member therethrough. 4. The sandal having an air cushioning property according to claim 1, wherein the upper surface member is formed of a transparent material.