JP6415860B2 - Sole structure part of breathable breathable waterproof shoes - Google Patents

Description

  The present invention relates generally to a shoe sole structure of a shoe, and more particularly, to a shoe sole structure that combines breathability and / or moisture permeability with waterproofness required in daily shoe wear.

  Conventionally, in order to improve the waterproofness and water resistance of shoes, it is known to use a material having higher waterproofness or a material having higher water resistance for the surface of the upper. However, when such a material is used for the front material, it is difficult to discharge moisture inside the shoe to the outside, and the inside of the shoe may be steamed.

  Therefore, in order to prevent the inside of the shoe from becoming stuffy without impairing the waterproofness of the shoe, use a non-waterproof material as the cover material of the upper and use a breathable moisture-permeable waterproof membrane as the lining material of the upper. It has been known. Rainwater or the like that enters from the outside of the shoe does not enter the interior of the breathable waterproof membrane. On the other hand, moisture inside the shoe is discharged to the outside of the shoe through the ventilation moisture permeable waterproof membrane. Examples of the material of the breathable moisture permeable waterproof membrane include a polytetrafluoroethylene porous film, a urethane-based nonporous film, a urethane-based porous film, and a hydrophilic polyester film.

  In addition, vents are made in the sole (outsole), and a breathable breathable waterproof membrane is placed between the sole and the midsole inside the sole. Shoes that exhaust internal moisture have also been proposed.

  For example, in Japanese Patent Laid-Open No. 10-234414 (Patent Document 1), 60 through-holes are randomly provided in the insole stepping portion, and 30 through-holes are constant in the shoe sole stepping portion. Breathable shoes formed with a pitch of are described. In this breathable shoe, a sheet having moisture permeability and waterproof performance is disposed between the insole and the shoe sole.

  In Japanese Patent Laid-Open No. 2000-166606 (Patent Document 2), a shoe ventilation member having a plurality of through holes provided in a stepped portion on an insole and a plurality of through holes formed on a lower surface thereof is disposed. A breathable shoe is described. In this ventilation shoe, a waterproof ventilation sheet is disposed between the insole and the shoe ventilation member.

  JP 2010-510009 (Patent Document 3) discloses a core layer having a through-hole formed therein, a water vapor permeable / liquid impermeable thin film disposed thereunder, and a porous protective layer. A shoe comprising a moisture-permeable or perforated layered element and an installation body provided with a plurality of through-holes is described.

  Japanese Patent Application Laid-Open No. 2000-23702 (Patent Document 4) describes a transpiration shoe sole structure including a shoe sole having a hole and means for selectively transmitting air but not transmitting water. The hole opens along all or part of the outer edge of the sole. Inside the opening of the hole, a strip made of a material that selectively transmits air but does not transmit water is attached.

  JP 2002-10801 A (Patent Document 5) does not include a breathable moisture-permeable waterproof membrane, but has a ventilation path that branches into a plurality of shoes that communicates the inside of the shoe with the outside of the shoe sole. The shoes that are formed are described. A check valve is arranged in the ventilation path.

Japanese Patent Laid-Open No. 10-234414 JP 2000-166606 A JP 2010-510009 A JP 2000-23702 A JP 2002-10801 A

  However, in the breathable shoes of Patent Document 1 to Patent Document 3, a through-hole for ventilation on the inner side (foot side) of the shoe and the outer side of the shoe (waterproof breathable sheet) are sandwiched between the moisture permeable waterproof sheet (waterproof breathable sheet). When the through hole is formed so as to face the through hole for ventilation on the shoe sole side), the sheet having moisture permeability and waterproofness is easily damaged. That is, not only air but also water flows into the through hole for ventilation on the shoe sole side from the outside of the shoe sole. The water that flows into the through-hole may impair the water resistance of the sheet having moisture permeability and waterproofness by applying a large water pressure to the sheet having moisture permeability and waterproofness by walking or stepping on.

  Further, in the evaporative shoe sole structure of Patent Document 4, it is necessary to affix a strip formed of a material that selectively transmits air but does not transmit water inside the openings of a large number of holes. This strip may break if it is repeatedly deformed by walking or stepping on shoes.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to increase the water pressure resistance of a breathable moisture permeable waterproof membrane and to use a walking or stepping to efficiently drain and ventilate the shoe sole structure of a breathable moisture permeable waterproof shoe. Is to provide a department.

  A shoe sole structure portion of a breathable breathable waterproof shoe according to the present invention includes a shoe sole, an insole, and a breathable breathable waterproof membrane. A through hole is formed in the shoe sole from the outside to the inside. A through hole is formed in the insole from the outside to the inside. The breathable moisture permeable waterproof membrane is disposed between the shoe sole and the insole. The through hole in the shoe sole and the through hole in the insole are arranged so as not to face each other. This breathable moisture-permeable waterproof shoe further includes a passage that communicates one through hole of the shoe sole with another through hole. The passage is open to the outside on the side surface of the shoe sole.

  The sole structure of the breathable / breathable waterproof shoe according to the present invention includes a waterproof body disposed between the breathable / breathable waterproof membrane and the shoe sole, and the waterproof body has a through hole formed from the outside to the inside. The through hole of the waterproof body is preferably arranged so as to face the through hole of the shoe sole and to face the through hole of the insole.

  In the sole structure portion of the breathable moisture-permeable waterproof shoe according to the present invention, the passage may be formed on the side surface of the shoe sole so as to approach the lower surface of the shoe sole as compared with the center portion of the shoe sole. preferable.

  According to the present invention, there is provided a sole structure portion of a breathable / breathable / waterproof shoe that increases the water pressure resistance of the breathable / breathable / waterproof membrane and can efficiently drain and ventilate by using walking or stepping. Can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view schematically showing the entire insole (A), rubber (B), and shoe sole (C) of a breathable breathable waterproof shoe according to an embodiment of the present invention. The top view (A) which looked from the sole side which shows typically the whole sole structure part of the breathable moisture-permeable waterproof shoes of one embodiment of this invention, and the BB line shown to (A) of FIG. They are sectional drawing (B) seen from the direction, and sectional drawing (C) seen from the direction of CC line shown to (A) of FIG. It is the figure (A) which shows typically the flow of the air in a sole structure part, and the figure (B) which shows the flow of the water in a sole structure part typically. FIG. 2A is a diagram schematically illustrating a state where the shoe sole structure portion is not stepped on, and FIG. 2B is a diagram schematically illustrating a state where the shoe sole structure portion is stepped on. It is sectional drawing which shows typically the whole shoe-sole structure part of the ventilation moisture permeability waterproof shoes of another embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the terms “front side” and “back side” mean the outside of the shoe and the inside of the shoe, respectively, unless otherwise specified.

  As shown in FIG. 1, the shoe sole of a breathable / breathable waterproof shoe according to one embodiment of the present invention includes an insole 10, a rubber 20 as a waterproof body, a shoe sole 30, and a breathable / breathable waterproof membrane described later. Are laminated.

  The insole 10 is made of the same material as the upper as a part of the upper or separately from the upper. For example, leathers such as artificial leather, synthetic leather, natural leather, polyurethane sheets, EVA (ethylene vinyl alcohol) sheets, PVC (polyvinyl chloride) sheets, rubber sheets and other materials formed into sheets, polyester fibers, It is formed of a woven fabric or a knitted fabric using non-designated fibers such as nylon fiber, polypropylene fiber, cold sensation fiber and Japanese paper. In the insole 10, a plurality of through holes 11 are formed in a region from the arch to the portion where the base of the toe hits. The through hole 11 penetrates from the front side to the back side of the midsole 10.

  The rubber 20 is made of rubber in this embodiment. In addition to rubber, the rubber 20 is formed by impregnating a fiber structure with a resin such as polyurethane resin such as polyurethane, EVA, TPU (thermoplastic polyurethane composition), or coating on the same material as the upper. It may be formed by doing so as long as it is waterproof. A plurality of through holes 21 are formed in the rubber 20 in a region from the arch to the portion where the base of the toe hits. The through hole 21 penetrates from the front side to the back side of the rubber 20. The planar shape of the through hole 21 is, for example, an oval shape or a rectangular shape, and is formed to be larger than the through hole 11 of the insole 10.

  The shoe sole 30 is formed of a material known as an outer shoe sole. In the shoe sole 30, a plurality of through holes 31 are formed in a region from the arch to the portion where the base of the toe hits. The through hole 31 penetrates from the front side to the back side of the shoe sole 30. Further, the through hole 31 is communicated with a passage 32. The passage 32 is open to the outside on the side surface of the shoe sole 30.

  As shown in FIG. 2, the insole 10, the breathable moisture-permeable waterproof film 40, the rubber 20, and the shoe sole 30 are such that the insole 10 is on the inside (sole side) of the shoe and the shoe sole 30 is on the outside of the shoe. To form the sole structure portion 1.

  The breathable moisture permeable waterproof membrane 14 is made of, for example, a material formed into a film shape such as a polytetrafluoroethylene porous film, a urethane-based nonporous film, a urethane-based porous film, a hydrophilic polyester film, polyethylene, polypropylene, It is formed of a nonwoven fabric made of polyester or the like, or a melt blown nonwoven fabric. In particular, a nonwoven fabric made of polyethylene, polypropylene, polyester, or the like, or a melt blown nonwoven fabric has good air permeability. The breathable / water-permeable waterproof membrane 40 only needs to have at least air permeability or moisture permeability and waterproofness, and more preferably has air permeability and moisture permeability, and further has waterproofness. is there. Moreover, for example, polyurethane or cellulose nanofibers may be used for such a breathable moisture-permeable waterproof material. By constructing a breathable and breathable waterproof material using nanofibers, compared to the case of a breathable and breathable waterproof material using melt-blown nonwoven fabric, it increases the water pressure resistance and flex resistance while maintaining breathability. Can do. In addition, breathable and breathable waterproof materials using nanofibers are easy to stretch, and their performance does not change easily even when stretched. They are soft and difficult to wrinkle when making shoes, making it hard to finish. In particular, a breathable moisture-permeable waterproof material using polyurethane nanofibers is excellent in elongation, flexibility and durability.

  When the insole 10, the breathable / breathable waterproof membrane 40, the rubber 20, and the shoe sole 30 are laminated, the through hole 11 of the midsole 10 and the through hole 21 of the rubber 20 sandwich the breathable / breathable waterproof membrane 40. opposite. Further, the through hole 31 of the shoe sole 30 and the through hole 21 of the rubber 20 face each other. On the other hand, the through hole 11 of the insole 10 does not face the through hole 31 of the shoe sole 30. The breathable moisture-permeable waterproof membrane 40 closes the lower surface of the through hole 11 in the midsole 10 and closes the upper surface of the through hole 21 of the rubber 20.

  As shown to (A) of FIG. 3, air flows into the inside of the sole structure part 1 as shown by the arrow. That is, the air inside the shoe flows into the through hole 31 of the shoe sole 30 through the through hole 11 of the insole 10, the breathable moisture-permeable waterproof membrane 40, and the through hole 21 of the rubber 20. The through hole 31 of the shoe sole 30 communicates with the passage 32, and the passage 32 is open to the outside on the side surface of the shoe sole 30, so that air flowing into the through hole 31 passes through the passage 32. Released to the outside. Further, since the lower surface of the through hole 31 is open at the bottom of the shoe sole, the air that has flowed into the through hole 31 is also released from the lower surface of the through hole 31 to the outside of the shoe. On the contrary, the air outside the sole structure 1 passes through the through hole 31 and / or the passage 32, the through hole 21 of the rubber 20, the breathable moisture-permeable waterproof membrane 40, and the through hole 11 of the insole 10. Flows into the interior.

  As shown in FIG. 3B, water flows inside the shoe sole structure 1 as indicated by arrows. That is, water outside the shoe, such as rainwater, flows into the inside of the shoe sole 30 and the inside of the through hole 21 of the rubber 20 from the lower surface of the through hole 31 of the shoe sole 30 and the opening of the passage 32. However, since the air permeable and moisture permeable waterproof membrane 40 blocks the upper surface of the through hole 21 of the rubber 20, water does not flow into the through hole 11 of the midsole 10.

  As shown in FIG. 4, when moving from a state in which the shoe sole structure portion is not stepped on (A) to a state in which the shoe sole structure portion is stepped on (B) during walking, the breathable moisture-permeable waterproof membrane The space in the through hole 21 of the rubber 20 formed between the lower surface of 40 and the upper surface of the shoe sole 30 is crushed. At this time, if there is water such as rain water in the through hole 21 of the rubber 20, the through hole 31 of the shoe sole 30, and the passage 32, the water flows from the lower surface of the through hole 31 of the shoe sole 30 and the opening of the passage 32 to the shoe. It flows out of the bottom. In addition, when there is no water in the shoe sole 30, the air in the through hole 21 of the rubber 20, the through hole 31 of the shoe sole 30, and the passage 32 is pushed out. And after the space in the through-hole 21 of the rubber 20 is crushed, when returning to the state (A) where the shoe sole structure is not stepped on, air outside the shoe flows into the shoe sole structure 1. .

  As described above, the sole structure portion 1 of the breathable / breathable waterproof shoe includes the shoe sole 30, the midsole 10, and the breathable / breathable waterproof membrane 40. A through hole 31 is formed in the shoe sole 30 from the outside to the inside. A through hole 11 is formed in the midsole 10 from the outside to the inside. The breathable moisture permeable waterproof membrane 40 is disposed between the shoe sole 30 and the midsole 10. The through hole 31 of the shoe sole 30 and the through hole 11 of the midsole 10 are disposed so as not to face each other. The sole structure portion 1 of the breathable moisture-permeable waterproof shoe further includes a passage 32 that communicates one through hole 31 of the shoe sole 30 with the other through hole 31. The passage 32 is open to the outside on the side surface of the shoe sole 30.

  The through-hole 31 of the shoe sole 30 is opened at the bottom surface of the shoe sole 30 and the passage 32 communicating with the through-hole 31 is opened at the side surface of the shoe sole 30, so that the bottom surface or side surface of the shoe sole 30 is opened. Compared with the case where the inside of the shoe sole 30 communicates with the outside only in any one of these, drainage and ventilation can be performed efficiently.

  Since the through hole 31 is open on the bottom surface of the shoe sole 30, water outside the shoe sole 30 such as rain water tends to enter the through hole 31. However, by arranging the breathable / breathable waterproof membrane 40 between the through hole 11 of the insole 10 and the through hole 31 of the shoe sole 30, the opening of each through hole 11 is waterproofed or a check valve is provided. It is possible to efficiently secure the waterproofing inside the shoe with a simple structure without providing a shoe.

  In addition, since the inside of the through hole 31 of the shoe sole 30 communicates with the outside of the shoe sole 30 both on the bottom surface of the shoe sole 30 and on the side surface via the passage 32, rainwater is placed inside the through hole 31. The amount of water that enters easily increases. However, by arranging the through hole 11 of the insole 10 and the through hole 31 of the shoe sole 30 so as not to face each other, it is sandwiched between the through hole 11 of the insole 10 and the through hole 31 of the shoe sole 30. It is possible to prevent a large water pressure from being applied to the breathable moisture permeable waterproof membrane 40 and to prevent the breathable moisture permeable waterproof membrane 40 from being damaged.

  As described above, according to the sole structure portion 1 of the breathable / breathable / waterproof shoe, the water pressure resistance of the breathable / breathable / waterproof membrane 40 is increased and drainage and ventilation are efficiently performed using walking and stepping. It becomes possible.

  The shoe sole structure 1 includes a rubber 20 as a waterproof body disposed between the breathable moisture-permeable waterproof membrane 40 and the shoe sole 30, and the rubber 20 has a through-hole 21 formed from the outside to the inside. The 20 through holes 21 are arranged to face the through holes 31 of the shoe sole 30 and to face the through holes 11 of the midsole 10.

  By doing in this way, the through-hole 21 of the rubber 20 deform | transforms like a pump by stepping on at the time of walking, and water discharge and ventilation can be performed effectively.

  In addition, as shown in FIG. 5, the shape of the passage 33 can be changed. In the shoe sole structure 2 shown in FIG. 5, the passage 33 is formed on the side surface of the shoe sole 30 so as to approach the lower surface of the shoe sole 30 as compared with the central portion of the shoe sole 30.

  By doing in this way, it becomes possible to discharge | emit the water collected in the shoe sole 30 more efficiently.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.

  1, 2: Sole structure part, 10: Insole, 11: Through hole, 20: Rubber, 21: Through hole, 30: Sole, 31: Through hole, 32, 33: Passage, 40: Breathable breathable waterproof film.

Claims (2)

A shoe sole in which a through hole is formed from the outside to the inside;
An insole in which a through hole is formed from the outside to the inside;
A breathable moisture permeable waterproof membrane disposed between the shoe sole and the insole ;
A waterproof body disposed between the breathable moisture-permeable waterproof membrane and the shoe sole;
The through hole of the shoe sole and the through hole of the midsole are arranged so as not to face each other,
A passage that communicates the one through hole of the shoe sole and the other through hole of the shoe sole inside the shoe sole ;
The passage is opened to the outside on the side surface of the shoe sole ,
The waterproof body has a through hole formed from the outside to the inside,
The through-hole of the waterproof body is a shoe sole structure portion of a breathable moisture-permeable waterproof shoe , which is disposed so as to face the through-hole of the shoe sole and to face the through-hole of the insole. The passage in the side of the sole in comparison with the central portion of the sole, and is formed so as to approach the lower surface of the sole, the sole structure of the breathable waterproof breathable shoe according to claim 1.

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