JP3068888U - Footwear with drainage structure - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To quickly drain water entering a shoe and to avoid complication of the shape of an upper surface of an outsole and components in forming a drainage mechanism. SOLUTION: A water-permeable hole 7 extending downward is provided in a midsole 3 or a spacer layer corresponding thereto below a water guide surface formed with an insole for guiding infiltrated water downward. On the upper surface of the outsole 2, the ball portion 1 extends from the heel portion 11, the arch portion 12 and the toe portion 16 so as to be continuous with the water-permeable hole.
4 and a rear water groove 8 and a fore water groove 8A having an inclination which is lowered toward the ball portion.
In the ball portion 14 of the outsole 2, a temporary storage space 9 connected to each of the water passage grooves 8, 8A is secured, and on the side surface of the outsole 2, the water retained in the temporary storage space 9 is directed to the side of the footwear. A drain hole 10 is formed for draining. The discharge of the infiltration water is quick, and water does not flow back to the insole from the outside.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to footwear having a drainage structure, and more particularly to shoes and sandals, etc., in which an insole is integrated with an outsole, and when water invades the insole, the infiltrated water is removed from the footwear. It relates to the structure of footwear that can be discharged to the public.

[0002]

[Prior art]

 Footwear, such as shoes, are not usually constructed in a manner that allows for the intrusion of seawater or river water in the event of rainwater, pooled water, or water play. Therefore, if water enters, it cannot be drained automatically, and if water enters the footwear, it goes without saying that it becomes difficult to walk thereafter. Therefore, it is convenient if a drainage mechanism can be provided in footwear for playing with water, shoes for walking in wetlands, and the like.

[0003] By the way, even in footwear, particularly in the case of shoes having an upper covering the feet, the inside of the shoes often becomes stuffy due to sweat from the feet. There are examples in which various measures have been taken to eliminate the stuffiness of the shoes. For example, Japanese Patent Application Laid-Open Nos. Hei 10-57103 and Hei 10-179205 describe an exhaust structure having a simple structure.

[0004] The water vapor-permeable footwear described in Japanese Patent Application Laid-Open No. H10-57103 has a large number of holes formed on the surface of the insole, and the insole is provided with a felt layer interposed between the insole and the outsole. A hole connected to the hole is also provided on the outsole. Accordingly, water vapor in the upper can be discharged from the shoe sole by sweating from the foot.

[0005] In Japanese Patent Application Laid-Open No. Hei 10-179205, an insole is made of a mesh material to provide water permeability and moisture permeability, and a water drain having a diameter of 5 to 8 mm extending toward the ground on an outsole immediately below the insole. For example, two openings are provided in the heel portion and the arch portion, respectively.

[0006] In each of the examples, the moisture in the upper is guided downward to be exhausted from the shoe sole. Therefore, since there are holes and openings on the lower surface of the outsole, pebbles may bite during walking, sand and dust may enter the walking surface, impeding walking, and damaging the outsole. Of course, the shoes can be drained through the holes and openings, but on the other hand, it is inevitable that water easily enters from the bottom and the like.

[0007] By the way, a structure which is not drainable but circulates air in the shoes to prevent the shoes from getting stuffy is disclosed in JP-A-8-154703 and JP-A-6-15502. . In Japanese Unexamined Patent Publication No. Hei 8-154703, an air bag is built in the heel, the air bag is enlarged or reduced by a change in the load acting on the heel by walking, and the air in the upper is covered by a pumping action based on the air bag. Can be circulated. It has a large number of vents on the front surface of the insole leading to the air duct extending from the air bag.

[0008] The structure disclosed in Japanese Utility Model Laid-Open No. 6-15502 includes a hole provided in the insole, a gap secured in the heel, and a groove communicating the gap and the hole through the upper surface of the outsole. Has become. When a load is applied to the heel during walking and the gap is compressed, internal air is supplied to the sole from the hole in the insole through the groove. When the load on the heel is released, the air gap is restored and the air in the sole is sucked, and the inside of the shoe is repeatedly ventilated.

In each of the examples, a space is formed on the upper surface of the outsole between the outsole and the insole to secure an air passage between the pumping mechanism and the insole. However, they do not allow direct or indirect drainage, but merely move the air in the shoes.

[0010]

[Problem to be Solved by the Invention] Unlike the above-mentioned example, Japanese Utility Model No. 3019307 describes an example in which water entering the shoe can be positively discharged. In this method, the outsole is composed of a laminate of open-celled rubber and solid rubber, and the sides of each layer are exposed to the outside air. The insole is a water-permeable material, and the water in the shoe can be absorbed by the continuous foam rubber layer via the insole and released from the side to the outside air. In addition, a part of the rubber tape that adheres the entire circumference to integrate the insole and the outsole, especially a water-permeable hole is provided at the toe, was sucked into the open-cell rubber layer. Water can also be released from the water holes.

In this example, water can be discharged to the side or the front of the shoe, but the open-cell rubber layer tends to continue to absorb water for a long time. This is because quick drainage is not easy due to the fine bubbles, and it takes a long time to eliminate the wet state in the shoes. Of course, water from the road surface or the like is absorbed or penetrated from the water-permeable holes formed in the rubber tape at the side surface or the toe portion of the open-cell rubber layer exposed to the outside air. Furthermore, since the water discharged from the rubber tape is discharged forward, there is a high possibility that the discharged water will be sucked in again.

As can be seen from the above description, the prior art has advantages and disadvantages when its structure is applied to a drainage function. In other words, it takes a long time to drain the water even if it can be drained, and it is possible that the water can be drained, but there is also a possibility of water absorption. Problems remain, such as the necessity of providing a complex shape on the upper surface of the outsole or mounting another component in order to store functional components for ventilation and the like.

[0013] The present invention has been made in view of the above-described problems, and has as its object the ability to quickly drain water that has infiltrated shoes, prevent water from flowing back from outside to the soles, and a drainage mechanism. An object of the present invention is to provide a footwear having a drainage structure capable of avoiding complication of the shape of the upper surface of the outsole, eliminating unnecessary leftovers, and eliminating instability that hinders walking when forming the outsole. .

[0014]

[Means for Solving the Problems]

 The present invention relates to footwear such as shoes and sandals in which an insole is integrated with an outsole, and is provided with a drainage structure capable of discharging the infiltrated water out of the footwear when water enters the insole. Applies to footwear. As a feature, referring to FIGS. 1 to 3, the insole 4 is formed with a water guide surface 6 for guiding infiltration water downward, while the insole 4 is provided with a midsole 3 or a lower surface located below the water guide surface 6. The corresponding spacer layer is provided with a water-permeable hole 7 extending downward. On the upper surface of the outsole 2, a rear water flow groove 8 extending from the heel portion 11 and the arch portion 12 to the ball portion 14, and a fore water flow groove 8A extending from the toe portion 16 to the ball portion 14 are formed. At the same time, each of the water passage grooves 8 and 8A has a slope that is lowered toward the ball portion 14. In the ball portion 14 of the outsole 2, a temporary storage space 9 connected to the water passage grooves 8, 8A is secured. A drain hole 10 is formed on the side surface of the outsole 2 to discharge water retained in the temporary storage space 9 toward the side of the shoe.

[0015]

[Effect of the invention]

 According to the present invention, a water guide surface is provided on the insole, a water hole is provided below the insole, a rear water groove extending from the heel portion and the arch portion to the ball portion on the upper surface of the outsole, and a fore water groove extending from the toe portion to the ball portion. Since the ball part has a temporary storage space and the outsole has a drain hole formed on the side, the water that has entered the footwear is discharged to the side of the footwear through the above holes and grooves. be able to. Each ditches are inclined so that infiltration water can easily go to the ball part. Therefore, the water collection effect is extremely high and the drainage time is short.

In addition, since a large pressing force often acts on the ball portion when the other foot is stepped on, the accumulated water is easily pressurized and ejected. Even if water around the footwear may be sucked in when the pressing force is released after the stagnant water is released and the volume of the temporary storage space is restored, the water only collects in the temporary storage space and goes back to each water channel to insole. It does not flow back to

Since the discharge hole is located on the side surface of the outsole, foreign matter such as pebbles hardly bites during walking, and the degree of damage to the outsole due to the presence of the drainage mechanism is reduced as much as possible. The outsole is provided with a water channel and a temporary storage space, etc., which can be molded when the outsole is manufactured, and there is no need to attach a separate drainage part to the outsole. Is simplified.

[0018] The forewater groove can quickly guide the infiltrated water accumulated near the toe into the temporary storage space. If the accumulated water at the finger part where power is applied during walking is drained sequentially, the feet are prevented from becoming swollen, and walking becomes easier.

[0019]

[Embodiment of the invention]

 Hereinafter, the footwear having the drainage structure according to the present invention will be described in detail with reference to the drawings showing the embodiments. The present invention is intended to automatically and promptly drain water that has infiltrated footwear, and to provide a drainage structure applicable to various shoes, sandals, and the like.

FIG. 4 shows an example of a typical hiking boot 1. An outsole (outsole) 2, which is independently manufactured in advance by injection molding of polyurethane or the like, is connected to a foot via a midsole 3 or the like. An insole (middle bottom) 4 having a mounting surface is laminated and integrated. When water enters the insole from outside the upper 5, the insole has a drainable structure so that the infiltrated water can be discharged outside the boots.

The drainage structure is secured on a water guide surface 6 provided on the insole 4 shown in FIG. 3, a water permeable hole 7 formed on the midsole 3 shown in FIG. 4, and the upper surface of the outsole 2 shown in FIG. A rear water channel 8, a fore water channel 8A, a temporary storage space 9, and a drain hole 10 provided on a side surface of the outsole 2 so that infiltrated water can be discharged smoothly. Have been.

Referring to FIG. 3 in detail, first of all, referring to FIG. 3, the insole 4 to which the sole directly contacts is provided with a water guide surface 6 for guiding water penetrating the sole downward. For the water guide surface, a water-permeable woven fabric or a water-permeable material such as a mesh woven material 6A such as a woven fabric in which polyamide fibers and cloth yarns are woven, a net of synthetic fiber monofilament, and the like are employed.

If this kind is used, it is not necessary to make a hole in the insole 4 positively, and the intruded water can be easily moved downward. By the way, a highly wearable skin 13 is sewn to a part of the heel (heel) 11 and the arch (arch) 12 of the insole 4 as necessary.

The cushion member 3A, the shape-retaining core member 3B, etc., which constitute the midsole 3 shown in FIG. 4 or a spacer layer corresponding to the midsole 3 shown in FIG. (See also FIG. 1 and FIGS. 5 to 7 described later.)

As described above, when the midsole 3 or the spacer layer corresponding to the midsole 3 is made of a cushion material, a shape-retaining core material, or the like, the water-permeable holes 7 are bonded by overlapping the cushion material and the shape-retaining core material. In this state, a perforated vertical hole having a diameter of, for example, 2 mm may be formed by punching. In this way, the vertically permeable water holes are easy to pierce and the water flow is smooth.

On the other hand, the upper surface of the outsole 2 is connected to the water-permeable hole 7, extends from the heel portion 11 and the arch portion 12 shown in FIG. 2 to the ball portion (stepping portion) 14, and has a downward slope toward the ball portion. A large number of rear water channels 8 are formed (see also FIG. 1). In this example, the rear water channel is formed in a fishbone shape extending to the ball portion, and the water collecting effect in the temporary storage space 9 described later is enhanced. Of course, since the bottom of the rear water channel 8 is inclined as shown in FIG. 1, the flow of the derived water is also promoted.

In addition, a recess 15 having a diameter of, for example, about 10 mm is provided at each upstream end of the rear water passage groove 8. This functions as a drainage water receiver, and is covered with the midsole 3 and the like in the same manner as the rear water passage groove 8 (see FIGS. 6 and 7), and the water led out to the outsole 2 from the water permeation hole 7 is passed through the rear water passage. The water can be efficiently guided to the water channel 8 and the drainage time can be reduced.

In addition, a large amount of the fleshy portion of the outsole 2 in the heel portion 11 and the arch portion 12 is secured, and high durability against a compressive force during walking is maintained. 5 to 7 are cross-sectional views of the outsole 2 at different positions. The height H ₂ (see FIG. 6) of the rear water channel 8 and the outlet water receiver 15 from the ground is H ₁ (see FIG. 6). 7 (see FIG. 7).

In FIG. 2, the upper surface of the outsole 2 is connected to the water-permeable hole 7, extends from the toe portion (toe portion) 16 to the ball portion 14, and bends in an arc shape having an inclination down toward the ball portion. A fore passage groove 8A is also formed (see also FIG. 1). By doing so, infiltration water that has accumulated near the toes can be quickly led to the temporary storage space 9. It goes without saying that if the accumulated water at the finger portion to which power is applied during walking is sequentially discharged, the finger is prevented from swelling and walking becomes easier.

A temporary storage space 9 connected to both of the water passage grooves 8 and 8 A is secured in the ball portion 14 of the outsole 2. The temporary storage space 9 is a shallow space formed between the lamination of the outsole 2 and the midsole 3 and the like. As shown in FIG. 5, the bottom thereof has a drain groove 17 (see FIG. 2 is also formed. Although the drainage allows the drainage to be drained smoothly, the temporary storage space 9 itself has a shallow space, and the midsole 3 or a spacer layer corresponding thereto is present at the upper portion, so that the unstableness at the stepping portion is caused. It does not create a feeling.

On the side surface of the outsole 2, a drain hole 10 is formed which is continuous with the temporary storage space 9 and discharges water retained therein toward the side of the footwear. It is preferable that a plastic nipple 18 be fitted into the drain hole 10 from the side of the outer surface of the outsole 2. Damage of the outsole around the opening of the drain hole 10 is suppressed.

It is also possible to integrally form a detachable thin film 18 a at the opening of the nipple 18 and to function this as a check valve. Although it is not easy to integrate the check valve into the outsole 2 itself, the thin film 18a can be easily formed on the nipple 18, which is a small plastic molded product. Even if the thin film is damaged, if the nipple is replaced, the amount of water entering the temporary storage space 9 during walking in the water pool can be suppressed, and an increase in shoe weight can be suppressed.

As can be seen from FIG. 2, the drain hole 10 is provided on the ball portion 14 on the side of the toe. This arrangement minimizes the need to water your other foot.

According to the above-described configuration, the intruding water moves and can be discharged out of the footwear as follows. When water invades the insole 4 over the upper 5 during walking, the water that has reached the sole is guided from the water guide surface 6 of the insole 4 to the water passage hole 7 below. The water that has moved from the water-permeable hole 7 to the upper surface of the outsole 2 is guided to the temporary storage space 9 through the water-permeable grooves 8 and 8A.

The temporary storage space 9 is located in the ball portion 14, and a pressing force acts or is released each time the user walks. Therefore, the stagnant water is pushed out from the temporary storage space 9 toward the drain hole 10. The drain hole 10 is located on the side surface of the outsole 2 and is ejected from the opening of the nipple 18. During walking, the feet rise, fall, or incline, so that the water moves in the outsole 2 as the feet move. However, since the temporary storage space 9 is provided in the ball portion 14 where the ground contact opportunity is the largest, Its collection and discharge will be extremely smooth. On the other hand, when the walking is stopped or the footwear is removed, natural drainage is performed by the inclined water passages 8 and 8A and the drainage grooves 17.

As can be understood from the above description, according to the above-described configuration, water that has entered the footwear can be discharged to the side of the footwear through each hole or the like. The water passage grooves 8 and 8A are inclined so that infiltration water is easily directed to the ball portion 14, and the temporary storage space 9 has the longest contact with the ground during walking and is often at a lower position than other portions. Since it is provided at a location, the water collection effect is extremely high and the drainage time is short.

In addition, a large pressing force often acts on the ball portion 14 when the other foot is stepped on, so that it becomes easy to pressurize and eject the retained water. Even if the water around the footwear may be sucked in when the pressure is released after the accumulated water is released and the volume of the temporary storage space 9 is restored, the water only accumulates in the temporary storage space 9 and the water passage grooves 8, There is no backflow to the insole 4 going back 8A.

Since the discharge hole is located on the side surface of the outsole 2, foreign matter such as pebbles rarely bites during walking, and damage to the outsole 2 due to the presence of the drainage mechanism is possible. To be avoided. The outsole 2 is provided with water passage grooves 8, 8A, a temporary storage space 9, and the like, which can be formed at the time of manufacturing the outsole 2, and separate parts for water passage are provided. There is an advantage that the outsole structure can be simplified without the need for mounting.

By the way, in the above example, the water guide surface 6 forming the footrest surface is the mesh knitted material 6A (see FIG. 3), but penetrates the water guide surface through the insole 4 as shown in FIG. A large number of downwardly extending outlet holes 21 may be formed. By doing so, it is of course possible to easily move the intruded water downward, but the limitation on the material of the insole itself is relaxed, and the range of choice of the insole material can be expanded.

The drain hole 10 shown in FIG. 2 may be provided on the ball part 14 on the side of the toe (not shown). With this arrangement, there is no drain on others when walking side by side, and almost no water is applied to one's feet during walking unless both legs are aligned. Also in this case, if the drain groove 17 is inclined downward toward the drain hole 10, it is needless to say that the stagnant water can be naturally drained even when not walking.

If the drain holes 10 are provided on the toe side and the toe side of the ball portion 14, the amount of drainage by a single pressing operation of the temporary storage space 9 increases, and the drainage speed increases. In this case, if the bottom of the drainage groove 17 is provided with a downward slope toward the drainage holes 10 provided on both sides of the footwear, spontaneous drainage of the stagnant water is quickly performed even when walking is stopped.

FIG. 9 shows an example in which temporary storage spaces 9 A having different shapes are provided. The drainage groove 17 (see FIG. 2) is not formed in the temporary storage space, and the temporary storage space itself is deep as shown in FIGS. Therefore, the bottom itself of the temporary storage space 9A, which is secured between the lamination of the outsole 2 and the midsole 3 and the like, is given a downward slope toward the drain hole 10. It goes without saying that this slope works in the same way as the slope given to the drain. Therefore, the above-described concept in FIG. 2 can be applied regardless of whether the drain holes are present on the left or right.

Incidentally, the inclination given to the bottom of the temporary storage space 9A and the inclination of the drain groove 17 are not absolutely necessary, but it is described that they are convenient for smoothing the natural drainage action. Not even.

By the way, if the temporary storage space 9A is deepened as shown in the figure, the stepping portion tends to change up and down at the time of contact with the ground, and walking comfort is inferior. For this purpose, an elastic sponge 22 made of urethane material or the like is preferably fitted in the temporary storage space so as to fill the space and supplement the restoring elastic force. Cavities 23 are formed in the lower surface of the elastic sponge 22 so as to extend in the vertical and horizontal directions, and consideration is given to the smooth flow of water at the bottom of the temporary storage space 9A.

The hollow portion in the outsole 2 due to the existence of the temporary storage space 9 is filled with such an elastic sponge 22, and the occurrence of a feeling of instability during walking in the ball portion is avoided. The elastic sponge can easily discharge the retained water absorbed by receiving the pressing force of the ball portion, and also acts to promote the suction of the flowing water of the water passage grooves 8 and 8A when the elastic sponge is restored. 9 to 21, nipples are not drawn.

In the above description, the drainage structure has been described by taking the hiking boots as an example. However, sandals, especially sandals for playing in the water, such as beach sandals, hiking shoes with insteps, trekking shoes, and other footwear. It can also be applied to In any case, the infiltrated water can be discharged quickly, and water does not flow back to the insole from outside.

In forming the drainage mechanism, it is possible to avoid complication of the shape of the upper surface of the outsole, eliminate unnecessary spaces, and eliminate instability that hinders walking. There is no possibility that foreign matter is likely to be caught and damaged in the drainage hole, and there is no need to add a complicated shape to the upper surface of the outsole to store the independent functional parts for drainage, and it is not necessary to attach parts. Advantages are exhibited.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an example of an outsole applied to footwear having a drainage structure according to the present invention.

FIG. 2 is a plan view taken along line AA in FIG. 1;

FIG. 3 is a plan view of an insole in which a water guide surface is formed of a mesh knit.

FIG. 4 is a perspective view of a hiking shoe showing a part of an internal structure to which the drainage structure according to the present invention is applied.

FIG. 5 is a transverse sectional view taken along line BB in FIG. 2;

FIG. 6 is a transverse sectional view taken along line CC in FIG. 2;

FIG. 7 is a transverse sectional view taken along line DD in FIG. 2;

FIG. 8 is a plan view of an insole provided with a large number of outlet holes in a water guide surface.

FIG. 9 is a partial plan view of an outsole provided with a temporary storage space having a different structure.

10 is a vertical sectional view taken along line EE in FIG. 9;

FIG. 11 is a transverse sectional view taken along line FF in FIG. 9;

[Explanation of symbols]

1 Hiking boots (footwear), 2 Outsole (outer sole), 3 Midsole, 4 Insole (middle sole), 6
... water guide surface, 7 ... water permeation hole (through vertical hole), 8 ... rear water channel,
8A: Fore water channel, 9, 9A: Temporary reservoir space, 10: Drainage hole, 11: Heel (heel), 12: Arch (arch), 14: Ball (trample), 16: Toe Department (toe).

Claims (1)

[Utility model registration claims] 1. Footwear, such as shoes and sandals, in which an insole is integrated with an outsole, having a drainage structure in which when water enters the insole, the infiltrated water can be discharged out of the footwear. In the footwear, the insole is formed with a water guide surface for guiding infiltration water downward, while the midsole located below the water guide surface or a spacer layer corresponding thereto is provided with a water passage hole extending downward, On the upper surface of the outsole, a rear water groove extending from the heel portion and the arch portion to the ball portion and a fore water groove extending from the toe portion to the ball portion are formed. The water groove also has a downward slope toward the ball portion, and the ball portion of the outsole is provided with a temporary storage space connected to the water passage grooves, The side surface of Utosoru, footwear provided with a drainage structure, wherein a drain hole for discharging toward the retained water of the temporary reservoir space on the side of the footwear is formed.