WO2021199398A1 - Cushion member, shoe sole provided with same and shoes provided with same, and method for manufacturing cushion member - Google Patents

Cushion member, shoe sole provided with same and shoes provided with same, and method for manufacturing cushion member Download PDF

Info

Publication number
WO2021199398A1
WO2021199398A1 PCT/JP2020/015164 JP2020015164W WO2021199398A1 WO 2021199398 A1 WO2021199398 A1 WO 2021199398A1 JP 2020015164 W JP2020015164 W JP 2020015164W WO 2021199398 A1 WO2021199398 A1 WO 2021199398A1
Authority
WO
WIPO (PCT)
Prior art keywords
soft
cushion member
sole
side portion
cushion
Prior art date
Application number
PCT/JP2020/015164
Other languages
French (fr)
Japanese (ja)
Inventor
健太郎 山下
拓人 石井
勇紀 奥村
善紀 立石
田中　義人
友和 橋場
直也 岩本
竜朗 田邊
Original Assignee
株式会社アシックス
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社アシックス filed Critical 株式会社アシックス
Priority to PCT/JP2020/015164 priority Critical patent/WO2021199398A1/en
Publication of WO2021199398A1 publication Critical patent/WO2021199398A1/en

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12—Soles with several layers of different materials
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/02—Producing footwear made in one piece using a moulding technique, e.g. by injection moulding or casting
    • B29D35/04—Producing footwear made in one piece using a moulding technique, e.g. by injection moulding or casting having multilayered parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
    • B29D35/14—Multilayered parts

Definitions

  • the present disclosure relates to a cushion member, a sole provided with the cushion member, a shoe provided with the cushion member, and a method for manufacturing the cushion member.
  • Patent Document 1 discloses a shoe sole provided with a cushion member and a shoe provided with the cushion member.
  • Patent Document 1 discloses a cushioning structure of a sole with a midsole inserted between the upper and the outer sole.
  • the cushioning structure of the sole has a soft cushioning element as a cushion member.
  • the soft buffer element comprises a gel filled in a sealed resin container. The soft buffer element is exposed laterally.
  • the conventional cushion member is incorporated in the article, and the soft member constituting the cushion member is arranged so as to be exposed to the outside of the article in order to improve the aesthetic appearance. May occur.
  • the soft member constituting the cushion member is arranged so as to be exposed to the outside of the article in order to improve the aesthetic appearance. May occur.
  • the cushion member becomes heavier.
  • the article in which the cushion member is incorporated also becomes heavy.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a cushion member capable of increasing the outer surface area of a soft member while suppressing an increase in weight.
  • the cushion member based on the present invention includes a soft member and a foamed member.
  • the soft member has a bottom portion and a peripheral side portion. The peripheral side is located along the entire circumference of the peripheral edge of the bottom.
  • the soft member contains a soft elastomer.
  • the foam member is located in an internal space formed by a bottom portion and a peripheral side portion of the soft member. The foam member is joined to the bottom and peripheral sides of the soft member.
  • the foaming member contains a foaming resin.
  • the foamed member has a smaller mass per unit volume than the soft member.
  • the sole according to the present invention includes the cushion member according to the present invention.
  • the shoe based on the present invention has the above-mentioned sole.
  • the method for manufacturing a cushion member based on the present invention includes a pouring process and an arranging process.
  • the pouring process it has a bottom and a peripheral portion located along the entire circumference of the peripheral edge of the bottom, and the formation is opened by the peripheral side on the side opposite to the bottom, and the bottom, the peripheral side, and the peripheral portion are formed.
  • the foamable resin is poured from the opening into the internal space of the soft member containing the soft elastomer in which the internal space surrounded by the opening is formed.
  • the foamable resin is foamed in the internal space, so that the foamed member having a smaller mass per unit volume than the soft member is arranged in the internal space so as to be joined to the bottom portion and the peripheral side portion of the soft member.
  • the exposed area of the soft member on the outer surface can be increased while suppressing the weight increase.
  • FIG. 4 is a side view which looked at the shoe which concerns on one Embodiment of this invention from the outer foot side. It is a side view which looked at the shoe which concerns on one Embodiment of this invention from the inner foot side. It is a rear view which looked at the shoe which concerns on one Embodiment of this invention from the rear. It is a bottom view of the sole which concerns on one Embodiment of this invention. It is sectional drawing which saw the sole of FIG. 4 from the direction of the arrow of VV line.
  • FIG. 6 is a cross-sectional view of the sole of FIG. 4 as viewed from the direction of the arrow on the VI-VI line.
  • FIG. 4 is a cross-sectional view of the sole of FIG.
  • the extending direction of the straight line connecting both ends in the long axis direction of the shoe sole in the plan view of the shoe is referred to as the front-back direction, and the shoe is printed orthogonally to the front-back direction in the plan view.
  • the direction is called the foot width direction.
  • the direction from the end on the side where the portion supporting the heel of the foot of the shoe sole is located to the end on the side where the portion supporting the toe of the foot of the shoe sole is located is forward.
  • the direction from the end on the side where the part supporting the toe part of the foot of the shoe sole is located faces the end on the side where the part supporting the heel part of the foot of the shoe sole is located. Called backward.
  • a position corresponding to 40% of the dimension in the front-rear direction of the sole from the front end is set as the first boundary position, and the front-back direction of the sole from the front end.
  • the position corresponding to 80% of the dimension of is set as the second boundary position
  • the part included between the front end and the first boundary position along the front-rear direction is referred to as the forefoot part of the sole.
  • the part included between the first boundary position and the second boundary position along the front-back direction is called the midfoot part of the sole, and between the second boundary position and the rear end of the sole along the front-back direction.
  • the part included in is called the hind foot part of the sole.
  • the forefoot portion of the sole corresponds to the portion that supports the toe portion and the tread portion of the foot
  • the midfoot portion of the sole corresponds to the portion that supports the tread portion of the foot
  • the hind foot of the sole corresponds to the part that supports the heel of the foot.
  • the median side of the foot in the anatomical median position (that is, the side near the median) is referred to as the inner foot side, and the side of the foot opposite to the median side in the anatomical median position (that is, the side far from the median). ) Is referred to as the outer leg side.
  • the thickness direction means the direction orthogonal to the contact patch of the sole unless otherwise specified, and the thickness means the dimension in the thickness direction unless otherwise specified. do.
  • FIG. 1 is a side view of the shoe according to the embodiment of the present invention as viewed from the outer foot side.
  • FIG. 2 is a side view of the shoe according to the embodiment of the present invention as viewed from the inner foot side.
  • FIG. 3 is a rear view of the shoe according to the embodiment of the present invention as viewed from the rear.
  • the shoe 1 according to the embodiment of the present invention includes a sole 10 and an upper 20.
  • the sole 10 is joined to the bottom surface of the upper 20 by an adhesive or the like on the upper surface of the sole 10.
  • FIG. 4 is a bottom view of the sole according to the embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of the sole of FIG. 4 as viewed from the direction of the arrow along the VV line.
  • FIG. 6 is a cross-sectional view of the sole of FIG. 4 as viewed from the direction of the arrow on the VI-VI line.
  • FIG. 7 is a cross-sectional view of the sole of FIG. 4 as viewed from the direction of the arrow along the VII-VII line.
  • FIG. 8 is a cross-sectional view of the sole of FIG. 4 as viewed from the direction of the arrow along the VIII-VIII line.
  • the sole 10 includes a cushion member 100.
  • the sole 10 includes at least an outsole 11 and a midsole 12 including a cushion member 100.
  • the outsole 11 is provided on the lower surface of the midsole 12.
  • FIG. 9 is a top view of the cushion member according to the embodiment of the present invention.
  • FIG. 10 is a bottom view of the cushion member according to the embodiment of the present invention.
  • the vertical direction of the cushion member 100 is the same as the vertical direction of the shoe 1 and the sole 10, but the vertical direction of the cushion member 100 is the same as the vertical direction of the shoe 1 and the sole 10. It does not have to be.
  • the cushion member 100 includes a soft member 110 and a foam member 120.
  • the soft member 110 has a bottom portion 111 and a peripheral side portion 115.
  • the bottom portion 111 has a lower surface 112 which is a surface located on the side opposite to the foaming member 120 side.
  • a protruding portion 113 is provided at substantially the center of the lower surface 112 of the bottom 111.
  • the outer surface of the projecting portion 113 projects toward the side opposite to the foaming member 120 side.
  • the lower surfaces 112 located on both sides of the protruding portion 113 when viewed from the outer foot side or the inner foot side are curved in a convex shape toward the side opposite to the foaming member 120 side.
  • the peripheral side portion 115 is located along the entire circumference of the peripheral edge 114 of the bottom portion 111.
  • the peripheral side portion 115 has a first side portion 115A, a second side portion 115B, a third side portion 115C, and a fourth side portion 115D.
  • the second side portion 115B is located on the opposite side of the first side portion 115A via the foam member 120.
  • the third side portion 115C connects the end portion of the first side portion 115A on the third side portion 115C side and the end portion of the second side portion 115B of the third side portion 115C.
  • the fourth side portion 115D is located on the opposite side of the third side portion 115C via the foaming member 120.
  • the fourth side portion 115D connects the end portion of the first side portion 115A on the fourth side portion 115D side and the end portion of the second side portion 115B on the fourth side portion 115D side to each other.
  • the first side portion 115A has a first inner side surface 116A, a first outer surface 117A, and a first upper end surface 118A.
  • the first inner side surface 116A is in contact with the foam member 120.
  • the first inner side surface 116A is curved convexly toward the foam member 120 side.
  • the first outer surface 117A is located on the side opposite to the first inner surface 116A when viewed from the first side portion 115A.
  • the first outer surface 117A is curved in a convex shape toward the foam member 120 side.
  • the first upper end surface 118A connects the first inner surface 116A and the first outer surface 117A to each other on the side opposite to the bottom 111 side of the first side portion 115A.
  • the second side portion 115B has a second inner side surface 116B, a second outer surface 117B, and a second upper end surface 118B.
  • the second inner side surface 116B is in contact with the foam member 120.
  • the second inner side surface 116B is curved convexly toward the foam member 120 side.
  • the second outer surface 117B is located on the side opposite to the second inner surface 116B when viewed from the second side portion 115B.
  • the second outer surface 117B is convexly curved to the side opposite to the foam member 120 side.
  • the second upper end surface 118B connects the second inner surface 116B and the second outer surface 117B to each other on the side opposite to the bottom 111 side of the second side portion 115B.
  • the third side portion 115C has a third inner side surface 116C, a third outer surface 117C, a third outer upper end surface 118C, and a third inner upper end surface 119C.
  • the third inner side surface 116C is in contact with the foam member 120.
  • the third inner side surface 116C is curved convexly toward the side opposite to the foam member 120 side.
  • the third outer surface 117C is located on the side opposite to the third inner surface 116C when viewed from the third side portion 115C.
  • the third outer surface 117C is curved in a convex shape toward the side opposite to the foam member 120 side.
  • the third outer surface 117C is curved convexly toward the side opposite to the foaming member 120 side when viewed from the direction in which the third side portion 115C extends from the first side portion 115A side toward the second side portion 115B side. doing.
  • the third outer upper end surface 118C is the surface farthest from the bottom 111 of the soft member 110 in the direction in which the bottom 111 and the foam member 120 are aligned, that is, in the vertical direction.
  • the third outer upper end surface 118C is connected to the third outer surface 117C.
  • the third outer upper end surface 118C extends in a direction in which the bottom portion 111 and the foaming member 120 are aligned, that is, in a direction substantially orthogonal to the vertical direction.
  • the third outer upper end surface 118C extends from the end portion of the third side portion 115C on the first side portion 115A side to the end portion on the second side portion 115B side.
  • the third inner upper end surface 119C connects the third inner side surface 116C and the third outer upper end surface 118C to each other.
  • the third inner upper end surface 119C extends from the end portion of the third side portion 115C on the first side portion 115A side to the end portion on the second side portion 115B side.
  • the third inner upper end surface 119C is smoothly connected to the first upper end surface 118A.
  • the third inner upper end surface 119C is smoothly connected to the second upper end surface 118B.
  • the third inner upper end surface 119C is curved so that the soft member 110 is recessed when viewed from the direction in which the third side portion 115C extends from the first side portion 115A side toward the second side portion 115B side.
  • the fourth side portion 115D has a fourth inner side surface 116D, a fourth outer surface 117D, a fourth outer upper end surface 118D, and a fourth inner upper end surface 119D.
  • the fourth inner side surface 116D is in contact with the foam member 120.
  • the fourth inner side surface 116D is curved convexly toward the side opposite to the foam member 120 side.
  • the fourth outer surface 117D is located on the side opposite to the fourth inner surface 116D when viewed from the fourth side portion 115D.
  • the fourth outer surface 117D is curved in a convex shape toward the side opposite to the foam member 120 side.
  • the fourth outer surface 117D is curved convexly toward the side opposite to the foaming member 120 side when viewed from the direction in which the fourth side portion 115D extends from the first side portion 115A side toward the second side portion 115B side. doing.
  • the fourth outer upper end surface 118D is the surface farthest from the bottom 111 of the soft member 110 in the direction in which the bottom 111 and the foam member 120 are aligned, that is, in the vertical direction.
  • the fourth outer upper end surface 118D is connected to the fourth inner side surface 116D.
  • the fourth outer upper end surface 118D extends in a direction in which the bottom portion 111 and the foaming member 120 are aligned, that is, in a direction substantially orthogonal to the vertical direction.
  • the fourth outer upper end surface 118D extends from the end on the first side 115A side of the fourth side 115D to the end on the second side 115B side.
  • the fourth inner upper end surface 119D connects the fourth inner side surface 116D and the fourth outer upper end surface 118D to each other.
  • the fourth inner upper end surface 119D extends from the end portion of the fourth side portion 115D on the first side portion 115A side to the end portion on the second side portion 115B side.
  • the fourth inner upper end surface 119D is smoothly connected to the first upper end surface 118A.
  • the fourth inner upper end surface 119D is smoothly connected to the second upper end surface 118B.
  • the fourth inner upper end surface 119D is curved so that the soft member 110 is recessed when viewed from the direction in which the fourth side portion 115D extends from the first side portion 115A side toward the second side portion 115B side.
  • an opening O is formed by the peripheral side portion 115 on the side opposite to the bottom portion 111.
  • an internal space S surrounded by a bottom portion 111, a peripheral side portion 115, and an opening O is formed.
  • the open end of the opening O includes a connection portion between the first inner side surface 116A and the first upper end surface 118A, a connection portion between the second inner side surface 116B and the second upper end surface 118B, and a third inner side surface 116C. It is composed of a connecting portion with the third inner upper end surface 119C and a connecting portion between the fourth inner side surface 116D and the fourth inner upper end surface 119D.
  • the sole 10 in the sole 10 according to the present embodiment, at least a part of the soft member 110 is exposed on the upper 20 side of the sole 10, that is, on the surface other than the upper side.
  • the protruding portion 113 is exposed on the lower side of the sole 10, and a part of the third side portion 115C is exposed on the outer foot side of the sole 10.
  • a part of the fourth side portion 115D is exposed on the inner foot side of the sole 10. More specifically, in the sole 10 according to the present embodiment, the outer surface of the protruding portion 113 is exposed on the lower side of the sole 10, and a part of the third outer surface 117C is exposed on the outer foot side of the sole 10. It is exposed, and a part of the fourth outer surface 117D is exposed to the outside of the sole 10 on the inner foot side of the sole 10.
  • the soft member 110 contains a soft elastomer as a main component.
  • the flexible elastomer comprises, for example, a polyurethane-based polymer, a polystyrene-based polymer, a silicone-based resin, or another thermoplastic resin.
  • the soft elastomer is a solid and jelly-like viscoelastic body.
  • the flexible elastomer may be a foam made of a foamable resin.
  • the Asker C hardness of the soft member 110 is, for example, 30 degrees or more and 50 degrees or less. When the Asker C hardness of the soft member 110 is 30 degrees or more and 50 degrees or less, even if the hardness of the foam member 120 is reduced, the cushion member 100 is suppressed from being destroyed when the cushion member 100 is used.
  • the mass per unit volume of the soft member 110 is, for example, 0.5 g / cm 3 or more and 1.2 g / cm 3 or less.
  • the foaming member 120 is located in the internal space S formed by the bottom portion 111 and the peripheral side portion 115 of the soft member 110.
  • the foam member 120 is joined to the bottom portion 111 and the peripheral side portion 115 of the soft member 110.
  • the foamed member 120 is joined to each of the first inner side surface 116A, the second inner side surface 116B, the third inner side surface 116C, and the fourth inner side surface 116D among the peripheral side portions 115 of the soft member 110.
  • the foamed member 120 is joined by directly adhering to the bottom portion 111 and the peripheral side portion 115 of the soft member 110 without using another member such as an adhesive.
  • the foaming member 120 contains a foaming resin as a main component.
  • the effervescent resin is made of a polymer of the same type as the soft elastomer.
  • the foamable resin is a foam of the polyurethane-based polymer.
  • the foamable resin is a polystyrene-based polymer foam, more specifically, expanded polystyrene.
  • the soft elastomer contained in the soft member 110 is a silicone-based resin
  • the soft elastomer is foamed silicone.
  • the foamable resin and the flexible elastomer are both made of a polyurethane polymer. That is, in the present embodiment, the flexible elastomer is a foam of a polyurethane-based polymer.
  • the Asker C hardness of the foam member 120 is, for example, 15 degrees or more and less than 30 degrees. If the Asker C hardness of the foam member 120 is 15 degrees or more and less than 30 degrees, the entire cushion member 100 can be softened, and when the shoe 1 is worn and the sole 10 is stepped on, the impact is satisfactorily cushioned. can do.
  • the foamed member 120 has a smaller mass per unit volume than the soft member 110. Mass per unit volume of the foam member 120 is, for example, 0.05 g / cm 3 or more 0.3 g / cm 3 or less.
  • the cushion member 100 according to the embodiment of the present invention is located at least on the hind foot portion of the sole 10, but may be located at least on the forefoot portion of the sole 10.
  • the midsole 12 further includes a first midsole 200 and a second midsole 300.
  • the first midsole 200 has a first upper surface 210 and a first lower surface 220.
  • the first upper surface 210 constitutes the entire upper surface of the midsole 12.
  • the first lower surface 220 is located on the side opposite to the first upper surface 210 in the vertical direction.
  • the cushion member 100 is joined to the first lower surface 220 of the first midsole 200.
  • the peripheral side portion 115 of the soft member 110 is joined to the first lower surface 220 of the first midsole 200.
  • Each of the end surface 119C and the fourth outer upper end surface 118D and the fourth inner upper end surface 119D of the fourth side portion 115D are joined to the first lower surface 220 of the first midsole 200.
  • the foam member 120 is in contact with the first lower surface of the first midsole 200.
  • the material constituting the first midsole 200 is not particularly limited.
  • the first midsole 200 may contain a thermoplastic resin as a main component, for example.
  • the first midsole 200 may contain, for example, a polyethylene-based polymer as a main component, and specifically, may contain a linear short-chain branched low-density polyethylene as a main component.
  • the second midsole 300 has a second upper surface 310 and a second lower surface 320.
  • the second upper surface further has a second front upper surface 311 and a second rear upper surface 312, and a second central upper surface 313.
  • the second front upper surface 311 When viewed from the vertical direction, the second front upper surface 311 is located on the front side of the second midsole 300. When viewed from the vertical direction, the second rear upper surface 312 is located on the rear side of the second midsole 300, separated from the second front upper surface 311.
  • the second central upper surface 313 When viewed from the vertical direction, the second central upper surface 313 is located between the second front upper surface 311 and the second rear upper surface 312.
  • the second central upper surface 313 connects the second front upper surface 311 and the second rear upper surface 312 to each other.
  • the second central upper surface 313 is located below the connection portion between the second front upper surface 311 and the second central upper surface 313.
  • the second central upper surface 313 is located below the connection portion between the second rear upper surface 312 and the second central upper surface 313.
  • the second central upper surface 313 is concavely curved toward the outside of the second midsole 300 when viewed from the outer foot side.
  • the second midsole 300 further has a through hole 330 penetrating the second midsole 300 from the second upper surface 310 to the second lower surface 320. Specifically, the through hole 330 penetrates the second midsole 300 from the second central upper surface 313 toward the second lower surface 320.
  • the second midsole 300 is joined to the first midsole 200. Specifically, each of the second front upper surface 311 and the second upper surface 310 of the second midsole 300 is joined to the first lower surface 220 of the first midsole 200.
  • the second lower surface 320 is located on the side opposite to the second upper surface 310 in the vertical direction.
  • the outsole 11 is located on a part of the second lower surface 320.
  • the cushion member 100 is supported by the second midsole 300.
  • the bottom portion 111 is supported by the second midsole 300 from the side opposite to the foaming member 120 side of the bottom portion 111.
  • the bottom portion 111 is supported by the second central upper surface 313 from the side opposite to the foaming member 120 side of the bottom portion 111.
  • the protrusion 113 formed on the bottom 111 is arranged in the through hole 330.
  • the protruding portion 113 is located above the opening end on the second lower surface 320 side of the through hole 330.
  • a part of the peripheral side portion 115 is located so as to face the second midsole 300.
  • the first outer surface 117A of the first side portion 115A is located so as to face the second midsole 300. More specifically, the first outer surface 117A is positioned so as to face the second central upper surface 313.
  • the second central upper surface 313 extends along the first outer surface 117A. In the present embodiment, at least a part of the first outer surface 117A is located so as to be slightly separated from the second central upper surface 313. The entire surface of the first outer surface 117A may be in contact with the second central upper surface 313.
  • the second outer surface 117B of the second side portion 115B is located so as to face the second midsole 300. More specifically, the second outer surface 117B is positioned so as to face the second central upper surface 313.
  • the second central upper surface 313 extends along the second outer surface 117B. In the present embodiment, at least a part of the second outer surface 117B is located so as to be slightly separated from the second central upper surface 313. The entire surface of the second outer surface 117B may be in contact with the second central upper surface 313.
  • the material constituting the second midsole 300 is not particularly limited.
  • the second midsole 300 contains, for example, a thermoplastic resin as a main component.
  • the second midsole 300 may contain, for example, an ethylene-vinyl acetate copolymer as a main component.
  • the cushion member 100 includes a soft member 110 and a foamed member 120.
  • the soft member 110 has a bottom portion 111 and a peripheral side portion 115.
  • the peripheral side portion 115 is located along the entire circumference of the peripheral edge 114 of the bottom portion 111.
  • the soft member 110 contains a soft elastomer.
  • the foam member 120 is located in the internal space S formed by the bottom portion 111 and the peripheral side portion 115 of the soft member 110.
  • the foam member 120 is joined to the bottom portion 111 and the peripheral side portion 115 of the soft member 110.
  • the foaming member 120 contains a foaming resin.
  • the foamed member 120 has a smaller mass per unit volume than the soft member 110.
  • the outer surface area of the soft member 110 can be increased while suppressing the weight increase of the cushion member 100.
  • the foamable resin is made of a polymer of the same type as the soft elastomer.
  • the adhesive force between the soft member 110 and the foamed member 120 is improved, and it is possible to prevent the soft member 110 and the foamed member 120 from peeling off from each other.
  • the foamable resin and the soft elastomer are both made of a polyurethane polymer. Since the volume reduction of the foamable resin made of the polyurethane polymer is relatively small in cooling after foaming, the foamed member 120 that follows the shape of the internal space S can be easily formed.
  • the sole 10 includes the cushion member 100. Since the weight increase of the cushion member 100 is suppressed, it is possible to prevent the sole 10 from becoming heavy even if the sole 10 includes the cushion member 100.
  • the soft member 110 is exposed on the surface other than the upper side of the sole. Thereby, the aesthetic appearance of the sole 10 can be improved.
  • the shoe according to the embodiment of the present invention has the above-mentioned sole. Since the weight increase of the sole 10 is suppressed, even if the shoe 1 is provided with the sole 10, it is possible to prevent the shoe 1 from becoming heavy.
  • FIG. 11 is a flowchart showing a method of manufacturing a cushion member according to an embodiment of the present invention.
  • the method for manufacturing the cushion member 100 according to the embodiment of the present invention includes a soft member preparation step S1, a pouring step S2, and an arrangement step S3.
  • the soft member 110 is prepared.
  • the method for preparing the soft member 110 is not particularly limited.
  • the soft member 110 is formed by injection molding to form the soft member 110. You may prepare.
  • the soft elastomer contained in the soft member 110 is a polystyrene-based polymer
  • the soft member 110 may prepare the soft member 110 by forming the soft member 110 by compression molding.
  • the soft elastomer contained in the soft member 110 is a silicone-based resin
  • the soft member 110 may be prepared by forming the soft member 110 by injection molding.
  • the unfoamed foamable resin is poured from the opening O into the internal space S into the soft member 110 containing the soft elastomer in which the above-mentioned internal space S is formed. Further, in the arrangement step S3, by foaming the unfoamed foamable resin in the internal space S, the foamed member 120 having a smaller mass per unit volume than the soft member 110 is formed on the bottom 111 and the peripheral side portion of the soft member 110. It is arranged in the internal space S so as to be joined to 115.
  • the outer surface area of the soft member 110 can be increased while suppressing the weight increase of the cushion member 100, and the foamed member 120 and the soft member 110 can be brought together by foaming the foamable resin in the internal space S. It can be easily brought into close contact.
  • the unfoamed foamable resin can be foamed by heating, for example. Further, in the arrangement step S3, before foaming the unfoamed foamable resin, a lid material for sealing the opening O may be arranged, and then the unfoamed foamable resin may be foamed in the internal space S. good. This makes it possible to manufacture the cushion member 100 having the foamed member 120 having a desired volume, density and shape. It is preferable that the lid material can be removed after foaming the unfoamed foamable resin.
  • the foamable resin is made of a polymer of the same type as the soft elastomer.
  • the adhesive force between the soft member 110 and the foamed member 120 is improved, and it is possible to prevent the soft member 110 and the foamed member 120 from peeling off from each other.
  • both the foamable resin and the flexible elastomer are made of a polyurethane polymer. Since the volume reduction of the foamable resin made of the polyurethane polymer is relatively small in cooling after foaming, the foamed member 120 can be brought into close contact with the soft member 110.
  • the cushion member 100 according to the embodiment of the present invention is manufactured.
  • the sole 10 according to the present embodiment is manufactured by arranging the cushion member 100 on the midsole 12 by a conventionally known method and further joining the midsole 12 to the outsole 11 by a conventionally known method. be able to.
  • the shoe 1 according to the present embodiment can be manufactured by joining the sole 10 and the upper 20 to each other by a conventionally known method.

Abstract

A cushion member (100) comprises a soft member (110) and a foamed member (120). The soft member (110) has a bottom part (111) and a peripheral side member (115). The peripheral side member (115) is positioned along the whole periphery of the peripheral edge (114) of the bottom part (111). The soft member (110) includes a soft elastomer. The foamed member (120) is positioned in the internal space (S) formed by the bottom part (111) and peripheral side member (115) of the soft member (110). The foamed member (120) is joined to the bottom part (111) and peripheral side member (115) of the soft member (110). The foamed member (120) includes foamable resin. The mass per unit volume of the foamed member (120) is smaller than that of the soft member (110).

Description

クッション部材、これを備える靴底およびこれを備える靴、ならびに、クッション部材の製造方法A cushion member, a sole provided with the cushion member, a shoe provided with the cushion member, and a method for manufacturing the cushion member.
　本開示は、クッション部材、これを備える靴底およびこれを備える靴、ならびに、クッション部材の製造方法に関する。 The present disclosure relates to a cushion member, a sole provided with the cushion member, a shoe provided with the cushion member, and a method for manufacturing the cushion member.
　クッション部材を備える靴底およびこれを備える靴を開示した文献として、特開２００３－９９０４号公報(特許文献１)がある。特許文献１には、アッパーとアウターソールとの間に、ミッドソールを介挿した靴底の緩衝構造が開示されている。当該靴底の緩衝構造は、クッション部材として軟質緩衝要素を有している。軟質緩衝要素は、樹脂製の密封容器の中に充填されたゲルを含む。軟質緩衝要素は、側方に向って露出している。 Japanese Patent Application Laid-Open No. 2003-9904 (Patent Document 1) discloses a shoe sole provided with a cushion member and a shoe provided with the cushion member. Patent Document 1 discloses a cushioning structure of a sole with a midsole inserted between the upper and the outer sole. The cushioning structure of the sole has a soft cushioning element as a cushion member. The soft buffer element comprises a gel filled in a sealed resin container. The soft buffer element is exposed laterally.
特開２００３－９９０４号公報Japanese Unexamined Patent Publication No. 2003-9904
　特許文献１に開示されたクッション部材のように、従来のクッション部材は、物品の中に組み込まれつつ、美観向上のため、クッション部材を構成する軟質部材が物品の外側に露出するように配置される場合がある。ここで、さらなる美観向上のため軟質部材の露出面積を大きくするためには、クッション部材の体積を大きくする必要がある。しかしながら、クッション部材の体積を大きくすると、クッション部材が重くなる。ひいては、クッション部材が組み込まれた物品も重くなる。 Like the cushion member disclosed in Patent Document 1, the conventional cushion member is incorporated in the article, and the soft member constituting the cushion member is arranged so as to be exposed to the outside of the article in order to improve the aesthetic appearance. May occur. Here, in order to increase the exposed area of the soft member in order to further improve the aesthetic appearance, it is necessary to increase the volume of the cushion member. However, when the volume of the cushion member is increased, the cushion member becomes heavier. As a result, the article in which the cushion member is incorporated also becomes heavy.
　本発明は上記課題に鑑みてなされたものであり、重量増加を抑制しつつ、軟質部材の外表面積を大きくできる、クッション部材を提供することを目的とする。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a cushion member capable of increasing the outer surface area of a soft member while suppressing an increase in weight.
　本発明に基づくクッション部材は、軟質部材と、発泡部材とを備えている。軟質部材は、底部と、周側部とを有している。周側部は、底部の周縁の全周に沿うように位置している。軟質部材は、軟質エラストマーを含んでいる。発泡部材は、軟質部材の底部と周側部とによって形成された内部空間に位置している。発泡部材は、軟質部材の底部および周側部に接合されている。発泡部材は、発泡性樹脂を含んでいる。発泡部材は、軟質部材より単位体積あたりの質量が小さい。 The cushion member based on the present invention includes a soft member and a foamed member. The soft member has a bottom portion and a peripheral side portion. The peripheral side is located along the entire circumference of the peripheral edge of the bottom. The soft member contains a soft elastomer. The foam member is located in an internal space formed by a bottom portion and a peripheral side portion of the soft member. The foam member is joined to the bottom and peripheral sides of the soft member. The foaming member contains a foaming resin. The foamed member has a smaller mass per unit volume than the soft member.
　本発明に基づく靴底は、上記本発明に基づくクッション部材を備えている。
　本発明に基づく靴は、上記靴底を備えている。 The sole according to the present invention includes the cushion member according to the present invention.
The shoe based on the present invention has the above-mentioned sole.
　本発明に基づくクッション部材の製造方法は、流込工程と、配置工程とを備えている。流込工程においては、底部と、底部の周縁の全周に沿うように位置する周側部とを有し、底部とは反対側において周側部によって形成が開口され、底部、周側部および開口に囲まれた内部空間が形成された、軟質エラストマーを含む軟質部材に対して、開口から内部空間に発泡性樹脂を流し込む。配置工程においては、内部空間において発泡性樹脂を発泡させることにより、軟質部材より単位体積あたりの質量が小さい発泡部材を、軟質部材の底部および周側部に接合するように内部空間に配置する。 The method for manufacturing a cushion member based on the present invention includes a pouring process and an arranging process. In the pouring process, it has a bottom and a peripheral portion located along the entire circumference of the peripheral edge of the bottom, and the formation is opened by the peripheral side on the side opposite to the bottom, and the bottom, the peripheral side, and the peripheral portion are formed. The foamable resin is poured from the opening into the internal space of the soft member containing the soft elastomer in which the internal space surrounded by the opening is formed. In the arranging step, the foamable resin is foamed in the internal space, so that the foamed member having a smaller mass per unit volume than the soft member is arranged in the internal space so as to be joined to the bottom portion and the peripheral side portion of the soft member.
　本発明によれば、重量増加を抑制しつつ、外表面における軟質部材の露出面積を大きくできる。 According to the present invention, the exposed area of the soft member on the outer surface can be increased while suppressing the weight increase.
本発明の一実施形態に係る靴を外足側から見た側面図である。It is a side view which looked at the shoe which concerns on one Embodiment of this invention from the outer foot side. 本発明の一実施形態に係る靴を内足側から見た側面図である。It is a side view which looked at the shoe which concerns on one Embodiment of this invention from the inner foot side. 本発明の一実施形態に係る靴を後方から見た背面図である。It is a rear view which looked at the shoe which concerns on one Embodiment of this invention from the rear. 本発明の一実施形態に係る靴底の下面図である。It is a bottom view of the sole which concerns on one Embodiment of this invention. 図４の靴底をＶ－Ｖ線矢印方向から見た断面図である。It is sectional drawing which saw the sole of FIG. 4 from the direction of the arrow of VV line. 図４の靴底をＶＩ－ＶＩ線矢印方向から見た断面図である。FIG. 6 is a cross-sectional view of the sole of FIG. 4 as viewed from the direction of the arrow on the VI-VI line. 図４の靴底をＶＩＩ－ＶＩＩ線矢印方向から見た断面図である。FIG. 4 is a cross-sectional view of the sole of FIG. 4 as viewed from the direction of the arrow along the VII-VII line. 図４の靴底をＶＩＩＩ－ＶＩＩＩ線矢印方向から見た断面図である。It is sectional drawing which saw the sole of FIG. 4 from the direction of the arrow of the line VIII-VIII. 本発明の一実施形態に係るクッション部材の上面図である。It is a top view of the cushion member which concerns on one Embodiment of this invention. 本発明の一実施形態に係るクッション部材の下面図である。It is a bottom view of the cushion member which concerns on one Embodiment of this invention. 本発明の一実施形態に係るクッション部材の製造方法を示すフローチャートである。It is a flowchart which shows the manufacturing method of the cushion member which concerns on one Embodiment of this invention.
　以下、本発明の一実施形態について図を参照して説明する。以下の実施形態の説明においては、図中の同一または相当部分には同一符号を付して、その説明は繰り返さない。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description of the embodiment, the same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated.
　以下に示す実施形態においては、靴を平面視した状態において靴底の長軸方向における両末端を結ぶ直線の延在方向を前後方向と称し、靴を平面視した状態において上記前後方向と直交刷る方向を足幅方向と称する。 In the embodiment shown below, the extending direction of the straight line connecting both ends in the long axis direction of the shoe sole in the plan view of the shoe is referred to as the front-back direction, and the shoe is printed orthogonally to the front-back direction in the plan view. The direction is called the foot width direction.
　また、上記前後方向のうち、靴底の足の踵部を支持する部分が位置する側の末端から、靴底の足の足趾部を支持する部分が位置する側の末端を向く方向を前方と称し、上記前後方向のうち、靴底の足の足趾部を支持する部分が位置する側の末端から、靴底の足の踵部を支持する部分が位置する側の末端を向く方向を後方と称する。 Further, in the front-back direction, the direction from the end on the side where the portion supporting the heel of the foot of the shoe sole is located to the end on the side where the portion supporting the toe of the foot of the shoe sole is located is forward. In the above-mentioned anteroposterior direction, the direction from the end on the side where the part supporting the toe part of the foot of the shoe sole is located faces the end on the side where the part supporting the heel part of the foot of the shoe sole is located. Called backward.
　また、靴底の前方側末端を基準とし、当該前方側末端から靴底の前後方向の寸法の４０％の寸法に相当する位置を第１境界位置とし、当該前方側末端から靴底の前後方向の寸法の８０％の寸法に相当する位置を第２境界位置とした場合に、前後方向に沿って前方側末端と第１境界位置との間に含まれる部分を靴底の前足部と称し、前後方向に沿って第１境界位置と第２境界位置との間に含まれる部分を靴底の中足部と称し、前後方向に沿って第２境界位置と靴底の後方側末端との間に含まれる部分を靴底の後足部と称する。 Further, with reference to the front end of the sole, a position corresponding to 40% of the dimension in the front-rear direction of the sole from the front end is set as the first boundary position, and the front-back direction of the sole from the front end. When the position corresponding to 80% of the dimension of is set as the second boundary position, the part included between the front end and the first boundary position along the front-rear direction is referred to as the forefoot part of the sole. The part included between the first boundary position and the second boundary position along the front-back direction is called the midfoot part of the sole, and between the second boundary position and the rear end of the sole along the front-back direction. The part included in is called the hind foot part of the sole.
　ここで、靴底の前足部は、足の足趾部と踏付け部とを支持する部分に該当し、靴底の中足部は、足の踏まず部を支持する部分に該当し、靴底の後足部は、足の踵部を支持する部分に該当する。 Here, the forefoot portion of the sole corresponds to the portion that supports the toe portion and the tread portion of the foot, and the midfoot portion of the sole corresponds to the portion that supports the tread portion of the foot. The hind foot of the sole corresponds to the part that supports the heel of the foot.
　また、足のうちの解剖学的正位における正中側（すなわち正中に近い側）を内足側と称し、足のうちの解剖学的正位における正中側とは反対側（すなわち正中に遠い側）を外足側と称する。 In addition, the median side of the foot in the anatomical median position (that is, the side near the median) is referred to as the inner foot side, and the side of the foot opposite to the median side in the anatomical median position (that is, the side far from the median). ) Is referred to as the outer leg side.
　さらには、厚み方向とは、他に特段の記載がない限り、靴底の接地面と直交する方向を意味し、厚みとは、他に特段の記載がない限り、当該厚み方向の寸法を意味する。 Furthermore, the thickness direction means the direction orthogonal to the contact patch of the sole unless otherwise specified, and the thickness means the dimension in the thickness direction unless otherwise specified. do.
　図１は、本発明の一実施形態に係る靴を外足側から見た側面図である。図２は、本発明の一実施形態に係る靴を内足側から見た側面図である。図３は、本発明の一実施形態に係る靴を後方から見た背面図である。図１から図３に示すように、本発明の一実施形態に係る靴１は、靴底１０と、アッパー２０とを備えている。靴底１０は、靴底１０の上面において、アッパー２０の底面と、接着剤などにより接合されている。 FIG. 1 is a side view of the shoe according to the embodiment of the present invention as viewed from the outer foot side. FIG. 2 is a side view of the shoe according to the embodiment of the present invention as viewed from the inner foot side. FIG. 3 is a rear view of the shoe according to the embodiment of the present invention as viewed from the rear. As shown in FIGS. 1 to 3, the shoe 1 according to the embodiment of the present invention includes a sole 10 and an upper 20. The sole 10 is joined to the bottom surface of the upper 20 by an adhesive or the like on the upper surface of the sole 10.
　図４は、本発明の一実施形態に係る靴底の下面図である。図５は、図４の靴底をＶ－Ｖ線矢印方向から見た断面図である。図６は、図４の靴底をＶＩ－ＶＩ線矢印方向から見た断面図である。図７は、図４の靴底をＶＩＩ－ＶＩＩ線矢印方向から見た断面図である。図８は、図４の靴底をＶＩＩＩ－ＶＩＩＩ線矢印方向から見た断面図である。 FIG. 4 is a bottom view of the sole according to the embodiment of the present invention. FIG. 5 is a cross-sectional view of the sole of FIG. 4 as viewed from the direction of the arrow along the VV line. FIG. 6 is a cross-sectional view of the sole of FIG. 4 as viewed from the direction of the arrow on the VI-VI line. FIG. 7 is a cross-sectional view of the sole of FIG. 4 as viewed from the direction of the arrow along the VII-VII line. FIG. 8 is a cross-sectional view of the sole of FIG. 4 as viewed from the direction of the arrow along the VIII-VIII line.
　図１から図８に示すように、本発明の一実施形態に係る靴底１０は、クッション部材１００を備えている。具体的には、靴底１０は、少なくともアウトソール１１と、クッション部材１００を含むミッドソール１２とを備えている。アウトソール１１は、ミッドソール１２の下面に設けられている。 As shown in FIGS. 1 to 8, the sole 10 according to the embodiment of the present invention includes a cushion member 100. Specifically, the sole 10 includes at least an outsole 11 and a midsole 12 including a cushion member 100. The outsole 11 is provided on the lower surface of the midsole 12.
　まず、本発明の一実施形態に係るクッション部材１００について詳細に説明する。図９は、本発明の一実施形態に係るクッション部材の上面図である。図１０は、本発明の一実施形態に係るクッション部材の下面図である。なお、本実施形態において、クッション部材１００の上下方向は、靴１および靴底１０の上下方向と同一であるが、クッション部材１００の上下方向は、靴１および靴底１０の上下方向と同一でなくてもよい。 First, the cushion member 100 according to the embodiment of the present invention will be described in detail. FIG. 9 is a top view of the cushion member according to the embodiment of the present invention. FIG. 10 is a bottom view of the cushion member according to the embodiment of the present invention. In the present embodiment, the vertical direction of the cushion member 100 is the same as the vertical direction of the shoe 1 and the sole 10, but the vertical direction of the cushion member 100 is the same as the vertical direction of the shoe 1 and the sole 10. It does not have to be.
　図４から図１０に示すように、本発明の一実施形態に係るクッション部材１００は、軟質部材１１０と、発泡部材１２０とを備えている。軟質部材１１０は、底部１１１と、周側部１１５とを有している。 As shown in FIGS. 4 to 10, the cushion member 100 according to the embodiment of the present invention includes a soft member 110 and a foam member 120. The soft member 110 has a bottom portion 111 and a peripheral side portion 115.
　図５から図１０に示すように、底部１１１は、発泡部材１２０側とは反対側に位置する面である下面１１２を有する。クッション部材１００を底部１１１側から見たときに、底部１１１の下面１１２の略中央には、突出部１１３が設けられている。突出部１１３の外表面は、発泡部材１２０側とは反対側に向かって突出している。外足側または内足側から見て、突出部１１３の両側に位置する下面１１２は、発泡部材１２０側とは反対側に向かって凸状に湾曲している。 As shown in FIGS. 5 to 10, the bottom portion 111 has a lower surface 112 which is a surface located on the side opposite to the foaming member 120 side. When the cushion member 100 is viewed from the bottom 111 side, a protruding portion 113 is provided at substantially the center of the lower surface 112 of the bottom 111. The outer surface of the projecting portion 113 projects toward the side opposite to the foaming member 120 side. The lower surfaces 112 located on both sides of the protruding portion 113 when viewed from the outer foot side or the inner foot side are curved in a convex shape toward the side opposite to the foaming member 120 side.
　周側部１１５は、底部１１１の周縁１１４の全周に沿うように位置している。周側部１１５は、第１側部１１５Ａと、第２側部１１５Ｂと、第３側部１１５Ｃと、第４側部１１５Ｄとを有している。 The peripheral side portion 115 is located along the entire circumference of the peripheral edge 114 of the bottom portion 111. The peripheral side portion 115 has a first side portion 115A, a second side portion 115B, a third side portion 115C, and a fourth side portion 115D.
　クッション部材１００を底部１１１側とは反対側から見て、第２側部１１５Ｂは、発泡部材１２０を介して第１側部１１５Ａの反対側に位置している。第３側部１１５Ｃは、第１側部１１５Ａの第３側部１１５Ｃ側の端部と、第２側部１１５Ｂの第３側部１１５Ｃの端部とを接続している。第４側部１１５Ｄは、発泡部材１２０を介して第３側部１１５Ｃの反対側に位置している。第４側部１１５Ｄは、第１側部１１５Ａの第４側部１１５Ｄ側の端部と、第２側部１１５Ｂの第４側部１１５Ｄ側の端部とを互いに接続している。 When the cushion member 100 is viewed from the side opposite to the bottom 111 side, the second side portion 115B is located on the opposite side of the first side portion 115A via the foam member 120. The third side portion 115C connects the end portion of the first side portion 115A on the third side portion 115C side and the end portion of the second side portion 115B of the third side portion 115C. The fourth side portion 115D is located on the opposite side of the third side portion 115C via the foaming member 120. The fourth side portion 115D connects the end portion of the first side portion 115A on the fourth side portion 115D side and the end portion of the second side portion 115B on the fourth side portion 115D side to each other.
　第１側部１１５Ａは、第１内側面１１６Ａと、第１外側面１１７Ａと、第１上端面１１８Ａとを有している。第１内側面１１６Ａは、発泡部材１２０と接している。クッション部材１００を底部１１１側とは反対側から見て、第１内側面１１６Ａは、発泡部材１２０側に向かって凸状に湾曲している。第１外側面１１７Ａは、第１側部１１５Ａから見て第１内側面１１６Ａとは反対側に位置している。クッション部材１００を底部１１１側とは反対側から見て、第１外側面１１７Ａは、発泡部材１２０側に向かって凸状に湾曲している。第１上端面１１８Ａは、第１内側面１１６Ａと第１外側面１１７Ａとを、第１側部１１５Ａの底部１１１側とは反対側において、互いに接続している。 The first side portion 115A has a first inner side surface 116A, a first outer surface 117A, and a first upper end surface 118A. The first inner side surface 116A is in contact with the foam member 120. When the cushion member 100 is viewed from the side opposite to the bottom 111 side, the first inner side surface 116A is curved convexly toward the foam member 120 side. The first outer surface 117A is located on the side opposite to the first inner surface 116A when viewed from the first side portion 115A. When the cushion member 100 is viewed from the side opposite to the bottom 111 side, the first outer surface 117A is curved in a convex shape toward the foam member 120 side. The first upper end surface 118A connects the first inner surface 116A and the first outer surface 117A to each other on the side opposite to the bottom 111 side of the first side portion 115A.
　第２側部１１５Ｂは、第２内側面１１６Ｂと、第２外側面１１７Ｂと、第２上端面１１８Ｂとを有している。第２内側面１１６Ｂは、発泡部材１２０と接している。クッション部材１００を底部１１１側とは反対側から見て、第２内側面１１６Ｂは、発泡部材１２０側に向かって凸状に湾曲している。第２外側面１１７Ｂは、第２側部１１５Ｂから見て第２内側面１１６Ｂとは反対側に位置している。クッション部材１００を底部１１１側とは反対側から見て、第２外側面１１７Ｂは、発泡部材１２０側とは反対側に凸状に湾曲している。第２上端面１１８Ｂは、第２内側面１１６Ｂと第２外側面１１７Ｂとを、第２側部１１５Ｂの底部１１１側とは反対側において、互いに接続している。 The second side portion 115B has a second inner side surface 116B, a second outer surface 117B, and a second upper end surface 118B. The second inner side surface 116B is in contact with the foam member 120. When the cushion member 100 is viewed from the side opposite to the bottom 111 side, the second inner side surface 116B is curved convexly toward the foam member 120 side. The second outer surface 117B is located on the side opposite to the second inner surface 116B when viewed from the second side portion 115B. When the cushion member 100 is viewed from the side opposite to the bottom 111 side, the second outer surface 117B is convexly curved to the side opposite to the foam member 120 side. The second upper end surface 118B connects the second inner surface 116B and the second outer surface 117B to each other on the side opposite to the bottom 111 side of the second side portion 115B.
　第３側部１１５Ｃは、第３内側面１１６Ｃと、第３外側面１１７Ｃと、第３外側上端面１１８Ｃと、第３内側上端面１１９Ｃとを有している。第３内側面１１６Ｃは、発泡部材１２０と接している。クッション部材１００を底部１１１側とは反対側から見て、第３内側面１１６Ｃは、発泡部材１２０側とは反対側に向かって凸状に湾曲している。第３外側面１１７Ｃは、第３側部１１５Ｃから見て第３内側面１１６Ｃとは反対側に位置している。クッション部材１００を底部１１１側とは反対側から見て、第３外側面１１７Ｃは、発泡部材１２０側とは反対側に向かって凸状に湾曲している。第３外側面１１７Ｃは、第３側部１１５Ｃが第１側部１１５Ａ側から第２側部１１５Ｂ側に向かって延びる方向から見て、発泡部材１２０側とは反対側に向かって凸状に湾曲している。 The third side portion 115C has a third inner side surface 116C, a third outer surface 117C, a third outer upper end surface 118C, and a third inner upper end surface 119C. The third inner side surface 116C is in contact with the foam member 120. When the cushion member 100 is viewed from the side opposite to the bottom 111 side, the third inner side surface 116C is curved convexly toward the side opposite to the foam member 120 side. The third outer surface 117C is located on the side opposite to the third inner surface 116C when viewed from the third side portion 115C. When the cushion member 100 is viewed from the side opposite to the bottom 111 side, the third outer surface 117C is curved in a convex shape toward the side opposite to the foam member 120 side. The third outer surface 117C is curved convexly toward the side opposite to the foaming member 120 side when viewed from the direction in which the third side portion 115C extends from the first side portion 115A side toward the second side portion 115B side. doing.
　第３外側上端面１１８Ｃは、底部１１１と発泡部材１２０とが並ぶ方向すなわち上下方向において、軟質部材１１０の底部１１１から最も離れた面である。第３外側上端面１１８Ｃは、第３外側面１１７Ｃと接続している。第３外側上端面１１８Ｃは、底部１１１と発泡部材１２０とが並ぶ方向すなわち上下方向に対して略直交方向に延びている。第３外側上端面１１８Ｃは、第３側部１１５Ｃの第１側部１１５Ａ側の端部から第２側部１１５Ｂ側の端部に至るまで延びている。 The third outer upper end surface 118C is the surface farthest from the bottom 111 of the soft member 110 in the direction in which the bottom 111 and the foam member 120 are aligned, that is, in the vertical direction. The third outer upper end surface 118C is connected to the third outer surface 117C. The third outer upper end surface 118C extends in a direction in which the bottom portion 111 and the foaming member 120 are aligned, that is, in a direction substantially orthogonal to the vertical direction. The third outer upper end surface 118C extends from the end portion of the third side portion 115C on the first side portion 115A side to the end portion on the second side portion 115B side.
　第３内側上端面１１９Ｃは、第３内側面１１６Ｃと第３外側上端面１１８Ｃとを互いに接続している。第３内側上端面１１９Ｃは、第３側部１１５Ｃの第１側部１１５Ａ側の端部から第２側部１１５Ｂ側の端部に至るまで延びている。第３内側上端面１１９Ｃは、第１上端面１１８Ａと滑らかに接続している。第３内側上端面１１９Ｃは、第２上端面１１８Ｂと滑らかに接続している。第３内側上端面１１９Ｃは、第３側部１１５Ｃが第１側部１１５Ａ側から第２側部１１５Ｂ側に向かって延びる方向から見て、軟質部材１１０が凹むように湾曲している。 The third inner upper end surface 119C connects the third inner side surface 116C and the third outer upper end surface 118C to each other. The third inner upper end surface 119C extends from the end portion of the third side portion 115C on the first side portion 115A side to the end portion on the second side portion 115B side. The third inner upper end surface 119C is smoothly connected to the first upper end surface 118A. The third inner upper end surface 119C is smoothly connected to the second upper end surface 118B. The third inner upper end surface 119C is curved so that the soft member 110 is recessed when viewed from the direction in which the third side portion 115C extends from the first side portion 115A side toward the second side portion 115B side.
　第４側部１１５Ｄは、第４内側面１１６Ｄと、第４外側面１１７Ｄと、第４外側上端面１１８Ｄと、第４内側上端面１１９Ｄとを有している。第４内側面１１６Ｄは、発泡部材１２０と接している。クッション部材１００を底部１１１側とは反対側から見て、第４内側面１１６Ｄは、発泡部材１２０側とは反対側に向かって凸状に湾曲している。第４外側面１１７Ｄは、第４側部１１５Ｄから見て第４内側面１１６Ｄとは反対側に位置している。クッション部材１００を底部１１１側とは反対側から見て、第４外側面１１７Ｄは、発泡部材１２０側とは反対側に向かって凸状に湾曲している。第４外側面１１７Ｄは、第４側部１１５Ｄが第１側部１１５Ａ側から第２側部１１５Ｂ側に向かって延びる方向から見て、発泡部材１２０側とは反対側に向かって凸状に湾曲している。 The fourth side portion 115D has a fourth inner side surface 116D, a fourth outer surface 117D, a fourth outer upper end surface 118D, and a fourth inner upper end surface 119D. The fourth inner side surface 116D is in contact with the foam member 120. When the cushion member 100 is viewed from the side opposite to the bottom 111 side, the fourth inner side surface 116D is curved convexly toward the side opposite to the foam member 120 side. The fourth outer surface 117D is located on the side opposite to the fourth inner surface 116D when viewed from the fourth side portion 115D. When the cushion member 100 is viewed from the side opposite to the bottom 111 side, the fourth outer surface 117D is curved in a convex shape toward the side opposite to the foam member 120 side. The fourth outer surface 117D is curved convexly toward the side opposite to the foaming member 120 side when viewed from the direction in which the fourth side portion 115D extends from the first side portion 115A side toward the second side portion 115B side. doing.
　第４外側上端面１１８Ｄは、底部１１１と発泡部材１２０とが並ぶ方向すなわち上下方向において、軟質部材１１０の底部１１１から最も離れた面である。第４外側上端面１１８Ｄは、第４内側面１１６Ｄと接続している。第４外側上端面１１８Ｄは、底部１１１と発泡部材１２０とが並ぶ方向すなわち上下方向に対して略直交方向に延びている。第４外側上端面１１８Ｄは、第４側部１１５Ｄの第１側部１１５Ａ側の端部から第２側部１１５Ｂ側の端部に至るまで延びている。 The fourth outer upper end surface 118D is the surface farthest from the bottom 111 of the soft member 110 in the direction in which the bottom 111 and the foam member 120 are aligned, that is, in the vertical direction. The fourth outer upper end surface 118D is connected to the fourth inner side surface 116D. The fourth outer upper end surface 118D extends in a direction in which the bottom portion 111 and the foaming member 120 are aligned, that is, in a direction substantially orthogonal to the vertical direction. The fourth outer upper end surface 118D extends from the end on the first side 115A side of the fourth side 115D to the end on the second side 115B side.
　第４内側上端面１１９Ｄは、第４内側面１１６Ｄと第４外側上端面１１８Ｄとを互いに接続している。第４内側上端面１１９Ｄは、第４側部１１５Ｄの第１側部１１５Ａ側の端部から第２側部１１５Ｂ側の端部に至るまで延びている。第４内側上端面１１９Ｄは、第１上端面１１８Ａと滑らかに接続している。第４内側上端面１１９Ｄは、第２上端面１１８Ｂと滑らかに接続している。第４内側上端面１１９Ｄは第４側部１１５Ｄが第１側部１１５Ａ側から第２側部１１５Ｂ側に向かって延びる方向から見て、軟質部材１１０が凹むように湾曲している。 The fourth inner upper end surface 119D connects the fourth inner side surface 116D and the fourth outer upper end surface 118D to each other. The fourth inner upper end surface 119D extends from the end portion of the fourth side portion 115D on the first side portion 115A side to the end portion on the second side portion 115B side. The fourth inner upper end surface 119D is smoothly connected to the first upper end surface 118A. The fourth inner upper end surface 119D is smoothly connected to the second upper end surface 118B. The fourth inner upper end surface 119D is curved so that the soft member 110 is recessed when viewed from the direction in which the fourth side portion 115D extends from the first side portion 115A side toward the second side portion 115B side.
　図５から図８に示すように、軟質部材１１０においては、底部１１１とは反対側において周側部１１５によって開口Ｏが形成されている。軟質部材１１０においては、底部１１１、周側部１１５および開口Ｏに囲まれた内部空間Ｓが形成されている。本実施形態において、開口Ｏの開口端は、第１内側面１１６Ａと第１上端面１１８Ａとの接続部、第２内側面１１６Ｂと第２上端面１１８Ｂとの接続部、第３内側面１１６Ｃと第３内側上端面１１９Ｃとの接続部、および、第４内側面１１６Ｄと第４内側上端面１１９Ｄとの接続部で構成されている。 As shown in FIGS. 5 to 8, in the soft member 110, an opening O is formed by the peripheral side portion 115 on the side opposite to the bottom portion 111. In the soft member 110, an internal space S surrounded by a bottom portion 111, a peripheral side portion 115, and an opening O is formed. In the present embodiment, the open end of the opening O includes a connection portion between the first inner side surface 116A and the first upper end surface 118A, a connection portion between the second inner side surface 116B and the second upper end surface 118B, and a third inner side surface 116C. It is composed of a connecting portion with the third inner upper end surface 119C and a connecting portion between the fourth inner side surface 116D and the fourth inner upper end surface 119D.
　図１から図４に示すように、本実施形態に係る靴底１０においては、軟質部材１１０は、靴底１０のアッパー２０側すなわち上側以外の表面において少なくとも一部が露出している。本実施形態に係る靴底１０において、軟質部材１１０のうち、靴底１０の下側において突出部１１３が露出し、靴底１０の外足側において第３側部１１５Ｃの一部が露出し、靴底１０の内足側において第４側部１１５Ｄの一部が露出している。より具体的には、本実施形態に係る靴底１０において、靴底１０の下側において突出部１１３の外表面が露出し、靴底１０の外足側において第３外側面１１７Ｃの一部が露出し、靴底１０の内足側において第４外側面１１７Ｄの一部が靴底１０の外側に露出している。 As shown in FIGS. 1 to 4, in the sole 10 according to the present embodiment, at least a part of the soft member 110 is exposed on the upper 20 side of the sole 10, that is, on the surface other than the upper side. In the sole 10 according to the present embodiment, among the soft members 110, the protruding portion 113 is exposed on the lower side of the sole 10, and a part of the third side portion 115C is exposed on the outer foot side of the sole 10. A part of the fourth side portion 115D is exposed on the inner foot side of the sole 10. More specifically, in the sole 10 according to the present embodiment, the outer surface of the protruding portion 113 is exposed on the lower side of the sole 10, and a part of the third outer surface 117C is exposed on the outer foot side of the sole 10. It is exposed, and a part of the fourth outer surface 117D is exposed to the outside of the sole 10 on the inner foot side of the sole 10.
　軟質部材１１０は、主成分として軟質エラストマーを含んでいる。軟質エラストマーは、たとえば、ポリウレタン系ポリマー、ポリスチレン系ポリマー、シリコーン系樹脂、または、その他の熱可塑性樹脂からなる。軟質エラストマーは、固体状で、かつ、ゼリー状の粘弾性体である。軟質エラストマーは、発泡性樹脂からなる発泡体(foam)であってもよい。 The soft member 110 contains a soft elastomer as a main component. The flexible elastomer comprises, for example, a polyurethane-based polymer, a polystyrene-based polymer, a silicone-based resin, or another thermoplastic resin. The soft elastomer is a solid and jelly-like viscoelastic body. The flexible elastomer may be a foam made of a foamable resin.
　軟質部材１１０のアスカーＣ硬度は、たとえば３０度以上５０度以下である。軟質部材１１０のアスカーＣ硬度が３０度以上５０度以下であれば、発泡部材１２０の硬度を小さくしても、クッション部材１００使用時においてクッション部材１００が破壊されることが抑制される。軟質部材１１０の単位体積当たりの質量は、たとえば０．５ｇ／ｃｍ3以上１．２ｇ／ｃｍ3以下である。 The Asker C hardness of the soft member 110 is, for example, 30 degrees or more and 50 degrees or less. When the Asker C hardness of the soft member 110 is 30 degrees or more and 50 degrees or less, even if the hardness of the foam member 120 is reduced, the cushion member 100 is suppressed from being destroyed when the cushion member 100 is used. The mass per unit volume of the soft member 110 is, for example, 0.5 g / cm 3 or more and 1.2 g / cm 3 or less.
　図５から図１０に示すように、発泡部材１２０は、軟質部材１１０の底部１１１と周側部１１５とによって形成された内部空間Ｓに位置している。発泡部材１２０は、軟質部材１１０の底部１１１および周側部１１５に接合されている。具体的には、発泡部材１２０は、軟質部材１１０の周側部１１５のうち、第１内側面１１６Ａ、第２内側面１１６Ｂ、第３内側面１１６Ｃおよび第４内側面１１６Ｄの各々に接合されている。発泡部材１２０は、接着剤など他の部材を介することなく、軟質部材１１０の底部１１１および周側部１１５に直接的に密着することで接合されている。 As shown in FIGS. 5 to 10, the foaming member 120 is located in the internal space S formed by the bottom portion 111 and the peripheral side portion 115 of the soft member 110. The foam member 120 is joined to the bottom portion 111 and the peripheral side portion 115 of the soft member 110. Specifically, the foamed member 120 is joined to each of the first inner side surface 116A, the second inner side surface 116B, the third inner side surface 116C, and the fourth inner side surface 116D among the peripheral side portions 115 of the soft member 110. There is. The foamed member 120 is joined by directly adhering to the bottom portion 111 and the peripheral side portion 115 of the soft member 110 without using another member such as an adhesive.
　発泡部材１２０は、主成分として発泡性樹脂を含んでいる。本実施形態においては、発泡性樹脂は、軟質エラストマーと同系統のポリマーからなる。たとえば、軟質部材１１０に含まれる軟質エラストマーが、ポリウレタン系ポリマーである場合には、上記発泡性樹脂は、ポリウレタン系ポリマーの発泡体である。軟質部材１１０に含まれる軟質エラストマーが、ポリスチレン系ポリマーである場合には、上記発泡性樹脂は、ポリスチレン系ポリマーの発泡体、より具体的には発泡スチロールである。軟質部材１１０に含まれる軟質エラストマーが、シリコーン系樹脂である場合には、軟質エラストマーは、発泡シリコーンである。本実施形態においては、発泡性樹脂および軟質エラストマーは、いずれもポリウレタン系ポリマーからなる。すなわち、本実施形態において、軟質エラストマーは、ポリウレタン系ポリマーの発泡体である。 The foaming member 120 contains a foaming resin as a main component. In the present embodiment, the effervescent resin is made of a polymer of the same type as the soft elastomer. For example, when the soft elastomer contained in the soft member 110 is a polyurethane-based polymer, the foamable resin is a foam of the polyurethane-based polymer. When the soft elastomer contained in the soft member 110 is a polystyrene-based polymer, the foamable resin is a polystyrene-based polymer foam, more specifically, expanded polystyrene. When the soft elastomer contained in the soft member 110 is a silicone-based resin, the soft elastomer is foamed silicone. In the present embodiment, the foamable resin and the flexible elastomer are both made of a polyurethane polymer. That is, in the present embodiment, the flexible elastomer is a foam of a polyurethane-based polymer.
　発泡部材１２０のアスカーＣ硬度は、たとえば１５度以上３０度未満である。発泡部材１２０のアスカーＣ硬度は、１５度以上３０度未満であれば、クッション部材１００全体を柔らかくすることができ、靴１を着用して靴底１０を踏みつけたときに、衝撃を良好に緩衝することができる。発泡部材１２０は、軟質部材１１０より単位体積あたりの質量が小さい。発泡部材１２０の単位体積当たりの質量は、たとえば０．０５ｇ／ｃｍ3以上０．３ｇ／ｃｍ3以下である。 The Asker C hardness of the foam member 120 is, for example, 15 degrees or more and less than 30 degrees. If the Asker C hardness of the foam member 120 is 15 degrees or more and less than 30 degrees, the entire cushion member 100 can be softened, and when the shoe 1 is worn and the sole 10 is stepped on, the impact is satisfactorily cushioned. can do. The foamed member 120 has a smaller mass per unit volume than the soft member 110. Mass per unit volume of the foam member 120 is, for example, 0.05 g / cm 3 or more 0.3 g / cm 3 or less.
　本発明の一実施形態に係るクッション部材１００は、靴底１０の後足部に少なくとも位置しているが、靴底１０の前足部に少なくとも位置していてもよい。 The cushion member 100 according to the embodiment of the present invention is located at least on the hind foot portion of the sole 10, but may be located at least on the forefoot portion of the sole 10.
　図１から図８に示すように、本実施形態において、ミッドソール１２は、第１ミッドソール２００と、第２ミッドソール３００とをさらに含んでいる。 As shown in FIGS. 1 to 8, in the present embodiment, the midsole 12 further includes a first midsole 200 and a second midsole 300.
　第１ミッドソール２００は、第１上面２１０と、第１下面２２０とを有している。第１上面２１０は、ミッドソール１２の全体の上面を構成する。第１下面２２０は、上下方向において第１上面２１０とは反対側に位置している。 The first midsole 200 has a first upper surface 210 and a first lower surface 220. The first upper surface 210 constitutes the entire upper surface of the midsole 12. The first lower surface 220 is located on the side opposite to the first upper surface 210 in the vertical direction.
　本実施形態において、クッション部材１００は、第１ミッドソール２００の第１下面２２０と接合されている。軟質部材１１０の周側部１１５は、第１ミッドソール２００の第１下面２２０と接合されている。具体的には、軟質部材１１０における第１側部１１５Ａの第１上端面１１８Ａ、第２側部１１５Ｂの第２上端面１１８Ｂ、第３側部１１５Ｃの第３外側上端面１１８Ｃおよび第３内側上端面１１９Ｃ、ならびに、第４側部１１５Ｄの第４外側上端面１１８Ｄおよび第４内側上端面１１９Ｄの各々が、第１ミッドソール２００の第１下面２２０と接合されている。発泡部材１２０は、第１ミッドソール２００の第１下面と接している。 In the present embodiment, the cushion member 100 is joined to the first lower surface 220 of the first midsole 200. The peripheral side portion 115 of the soft member 110 is joined to the first lower surface 220 of the first midsole 200. Specifically, in the soft member 110, the first upper end surface 118A of the first side portion 115A, the second upper end surface 118B of the second side portion 115B, the third outer upper end surface 118C of the third side portion 115C, and the third inner upper surface. Each of the end surface 119C and the fourth outer upper end surface 118D and the fourth inner upper end surface 119D of the fourth side portion 115D are joined to the first lower surface 220 of the first midsole 200. The foam member 120 is in contact with the first lower surface of the first midsole 200.
　第１ミッドソール２００を構成する材料は特に限定されない。第１ミッドソール２００は、たとえば主成分として熱可塑性樹脂を含んでいてもよい。第１ミッドソール２００は、たとえば、ポリエチレン系ポリマーを主成分として含んでいてもよく、具体的には、直鎖状短鎖分岐低密度ポリエチレンを主成分として含んでいてもよい。 The material constituting the first midsole 200 is not particularly limited. The first midsole 200 may contain a thermoplastic resin as a main component, for example. The first midsole 200 may contain, for example, a polyethylene-based polymer as a main component, and specifically, may contain a linear short-chain branched low-density polyethylene as a main component.
　図１から図８に示すように、第２ミッドソール３００は、第２上面３１０と、第２下面３２０とを有している。第２上面は、第２前側上面３１１と、第２後側上面３１２と、第２中央上面３１３とをさらに有している。 As shown in FIGS. 1 to 8, the second midsole 300 has a second upper surface 310 and a second lower surface 320. The second upper surface further has a second front upper surface 311 and a second rear upper surface 312, and a second central upper surface 313.
　上下方向から見て、第２前側上面３１１は、第２ミッドソール３００の前側に位置している。上下方向から見て、第２後側上面３１２は、第２前側上面３１１と離間して、第２ミッドソール３００の後側に位置している。 When viewed from the vertical direction, the second front upper surface 311 is located on the front side of the second midsole 300. When viewed from the vertical direction, the second rear upper surface 312 is located on the rear side of the second midsole 300, separated from the second front upper surface 311.
　上下方向から見て、第２中央上面３１３は、第２前側上面３１１と第２後側上面３１２との間に位置している。第２中央上面３１３は、第２前側上面３１１と第２後側上面３１２とを互いに接続している。第２中央上面３１３は、第２前側上面３１１と第２中央上面３１３との接続部より下方に位置している。第２中央上面３１３は、第２後側上面３１２と第２中央上面３１３との接続部より下方に位置している。第２中央上面３１３は、外足側から見て、第２ミッドソール３００の外側に向かって凹状に湾曲している。 When viewed from the vertical direction, the second central upper surface 313 is located between the second front upper surface 311 and the second rear upper surface 312. The second central upper surface 313 connects the second front upper surface 311 and the second rear upper surface 312 to each other. The second central upper surface 313 is located below the connection portion between the second front upper surface 311 and the second central upper surface 313. The second central upper surface 313 is located below the connection portion between the second rear upper surface 312 and the second central upper surface 313. The second central upper surface 313 is concavely curved toward the outside of the second midsole 300 when viewed from the outer foot side.
　第２ミッドソール３００は、第２上面３１０から第２下面３２０に向かって第２ミッドソール３００を貫通する貫通孔３３０をさらに有している。具体的には、貫通孔３３０は、第２中央上面３１３から第２下面３２０に向かって第２ミッドソール３００を貫通する。 The second midsole 300 further has a through hole 330 penetrating the second midsole 300 from the second upper surface 310 to the second lower surface 320. Specifically, the through hole 330 penetrates the second midsole 300 from the second central upper surface 313 toward the second lower surface 320.
　第２ミッドソール３００は、第１ミッドソール２００と接合されている。具体的には、第２ミッドソール３００の第２前側上面３１１および第２上面３１０の各々は、第１ミッドソール２００の第１下面２２０と接合されている。第２下面３２０は、上下方向において第２上面３１０とは反対側に位置している。第２下面３２０上の一部に、アウトソール１１が位置している。 The second midsole 300 is joined to the first midsole 200. Specifically, each of the second front upper surface 311 and the second upper surface 310 of the second midsole 300 is joined to the first lower surface 220 of the first midsole 200. The second lower surface 320 is located on the side opposite to the second upper surface 310 in the vertical direction. The outsole 11 is located on a part of the second lower surface 320.
　クッション部材１００は、第２ミッドソール３００に支持されている。具体的には、底部１１１が、底部１１１の発泡部材１２０側とは反対側から、第２ミッドソール３００によって支持されている。 The cushion member 100 is supported by the second midsole 300. Specifically, the bottom portion 111 is supported by the second midsole 300 from the side opposite to the foaming member 120 side of the bottom portion 111.
　本実施形態においては、底部１１１は、底部１１１の発泡部材１２０側とは反対側から、第２中央上面３１３によって支持されている。底部１１１に形成された突出部１１３は、貫通孔３３０内に配置されている。突出部１１３は、貫通孔３３０の第２下面３２０側の開口端より上側に位置している。 In the present embodiment, the bottom portion 111 is supported by the second central upper surface 313 from the side opposite to the foaming member 120 side of the bottom portion 111. The protrusion 113 formed on the bottom 111 is arranged in the through hole 330. The protruding portion 113 is located above the opening end on the second lower surface 320 side of the through hole 330.
　本実施形態においては、周側部１１５の一部は、第２ミッドソール３００と対向するように位置している。 In the present embodiment, a part of the peripheral side portion 115 is located so as to face the second midsole 300.
　具体的には、第１側部１１５Ａの第１外側面１１７Ａが、第２ミッドソール３００と対向するように位置している。より具体的には、第１外側面１１７Ａは、第２中央上面３１３と対向するように位置している。第２中央上面３１３は、第１外側面１１７Ａに沿うように延びている。本実施形態において、第１外側面１１７Ａの少なくとも一部は、第２中央上面３１３とわずかに離間するように位置している。第１外側面１１７Ａの全面が、第２中央上面３１３と接していてもよい。 Specifically, the first outer surface 117A of the first side portion 115A is located so as to face the second midsole 300. More specifically, the first outer surface 117A is positioned so as to face the second central upper surface 313. The second central upper surface 313 extends along the first outer surface 117A. In the present embodiment, at least a part of the first outer surface 117A is located so as to be slightly separated from the second central upper surface 313. The entire surface of the first outer surface 117A may be in contact with the second central upper surface 313.
　また、第２側部１１５Ｂの第２外側面１１７Ｂが、第２ミッドソール３００と対向するように位置している。より具体的には、第２外側面１１７Ｂは、第２中央上面３１３と対向するように位置している。第２中央上面３１３は、第２外側面１１７Ｂに沿うように延びている。本実施形態において、第２外側面１１７Ｂの少なくとも一部は、第２中央上面３１３とわずかに離間するように位置している。第２外側面１１７Ｂの全面が、第２中央上面３１３と接していてもよい。 Further, the second outer surface 117B of the second side portion 115B is located so as to face the second midsole 300. More specifically, the second outer surface 117B is positioned so as to face the second central upper surface 313. The second central upper surface 313 extends along the second outer surface 117B. In the present embodiment, at least a part of the second outer surface 117B is located so as to be slightly separated from the second central upper surface 313. The entire surface of the second outer surface 117B may be in contact with the second central upper surface 313.
　第２ミッドソール３００を構成する材料は特に限定されない。第２ミッドソール３００は、たとえば主成分として熱可塑性樹脂を含んでいる。第２ミッドソール３００は、たとえば、エチレン－酢酸ビニル共重合体を主成分として含んでいてもよい。 The material constituting the second midsole 300 is not particularly limited. The second midsole 300 contains, for example, a thermoplastic resin as a main component. The second midsole 300 may contain, for example, an ethylene-vinyl acetate copolymer as a main component.
　上述のように、本発明の一実施形態に係るクッション部材１００は、軟質部材１１０と、発泡部材１２０とを備えている。軟質部材１１０は、底部１１１と、周側部１１５とを有している。周側部１１５は、底部１１１の周縁１１４の全周に沿うように位置している。軟質部材１１０は、軟質エラストマーを含んでいる。発泡部材１２０は、軟質部材１１０の底部１１１と周側部１１５とによって形成された内部空間Ｓに位置している。発泡部材１２０は、軟質部材１１０の底部１１１および周側部１１５に接合されている。発泡部材１２０は、発泡性樹脂を含んでいる。発泡部材１２０は、軟質部材１１０より単位体積あたりの質量が小さい。 As described above, the cushion member 100 according to the embodiment of the present invention includes a soft member 110 and a foamed member 120. The soft member 110 has a bottom portion 111 and a peripheral side portion 115. The peripheral side portion 115 is located along the entire circumference of the peripheral edge 114 of the bottom portion 111. The soft member 110 contains a soft elastomer. The foam member 120 is located in the internal space S formed by the bottom portion 111 and the peripheral side portion 115 of the soft member 110. The foam member 120 is joined to the bottom portion 111 and the peripheral side portion 115 of the soft member 110. The foaming member 120 contains a foaming resin. The foamed member 120 has a smaller mass per unit volume than the soft member 110.
　これにより、クッション部材１００の重量増加を抑制しつつ、軟質部材１１０の外表面積を大きくすることができる。 Thereby, the outer surface area of the soft member 110 can be increased while suppressing the weight increase of the cushion member 100.
　本発明の一実施形態に係るクッション部材１００においては、発泡性樹脂は、軟質エラストマーと同系統のポリマーからなる。これにより、軟質部材１１０と発泡部材１２０との接着力が向上し、軟質部材１１０と発泡部材１２０とが互いに剥離することを抑制できる。 In the cushion member 100 according to the embodiment of the present invention, the foamable resin is made of a polymer of the same type as the soft elastomer. As a result, the adhesive force between the soft member 110 and the foamed member 120 is improved, and it is possible to prevent the soft member 110 and the foamed member 120 from peeling off from each other.
　本発明の一実施形態に係るクッション部材１００においては、発泡性樹脂および軟質エラストマーは、いずれもポリウレタン系ポリマーからなる。ポリウレタン系ポリマーからなる発泡性樹脂は、発泡後の冷却において体積の縮小が比較的小さいため、内部空間Ｓの形状に沿う発泡部材１２０を容易に形成することができる。 In the cushion member 100 according to the embodiment of the present invention, the foamable resin and the soft elastomer are both made of a polyurethane polymer. Since the volume reduction of the foamable resin made of the polyurethane polymer is relatively small in cooling after foaming, the foamed member 120 that follows the shape of the internal space S can be easily formed.
　本発明の一実施形態に係る靴底１０は、上記クッション部材１００を備えている。上記クッション部材１００は重量増加が抑制されているため、靴底１０がクッション部材１００を備えていても、靴底１０が重くなることを抑制できる。 The sole 10 according to an embodiment of the present invention includes the cushion member 100. Since the weight increase of the cushion member 100 is suppressed, it is possible to prevent the sole 10 from becoming heavy even if the sole 10 includes the cushion member 100.
　本発明の一実施形態に係る靴底においては、軟質部材１１０は、靴底のアッパー側以外の表面において少なくとも一部が露出している。これにより、靴底１０の美観を向上させることができる。 In the sole according to the embodiment of the present invention, at least a part of the soft member 110 is exposed on the surface other than the upper side of the sole. Thereby, the aesthetic appearance of the sole 10 can be improved.
　本発明の一実施形態に係る靴は、上記靴底を備えている。上記靴底１０は重量増加が抑制されているため、靴１が靴底１０を備えていても、靴１が重くなることを抑制できる。 The shoe according to the embodiment of the present invention has the above-mentioned sole. Since the weight increase of the sole 10 is suppressed, even if the shoe 1 is provided with the sole 10, it is possible to prevent the shoe 1 from becoming heavy.
　以下、本発明の一実施形態に係るクッション部材１００の製造方法について説明する。図１１は、本発明の一実施形態に係るクッション部材の製造方法を示すフローチャートである。図１１に示すように、本発明の一実施形態に係るクッション部材１００の製造方法は、軟質部材準備工程Ｓ１と、流込工程Ｓ２と、配置工程Ｓ３とを備えている。 Hereinafter, a method for manufacturing the cushion member 100 according to the embodiment of the present invention will be described. FIG. 11 is a flowchart showing a method of manufacturing a cushion member according to an embodiment of the present invention. As shown in FIG. 11, the method for manufacturing the cushion member 100 according to the embodiment of the present invention includes a soft member preparation step S1, a pouring step S2, and an arrangement step S3.
　軟質部材準備工程Ｓ１においては、本実施形態における軟質部材１１０を準備する。軟質部材１１０を準備する方法は特に限定されないが、たとえば、軟質部材１１０に含まれる軟質エラストマーが、ポリウレタン系ポリマーである場合には、射出成形により軟質部材１１０を形成することで、軟質部材１１０を準備してもよい。軟質部材１１０に含まれる軟質エラストマーが、ポリスチレン系ポリマーである場合には、軟質部材１１０は、圧縮成形により軟質部材１１０を形成することで、軟質部材１１０を準備してもよい。軟質部材１１０に含まれる軟質エラストマーがシリコーン系樹脂である場合には、射出成形により軟質部材１１０を形成することで、軟質部材１１０を準備してもよい。 In the soft member preparation step S1, the soft member 110 according to the present embodiment is prepared. The method for preparing the soft member 110 is not particularly limited. For example, when the soft elastomer contained in the soft member 110 is a polyurethane-based polymer, the soft member 110 is formed by injection molding to form the soft member 110. You may prepare. When the soft elastomer contained in the soft member 110 is a polystyrene-based polymer, the soft member 110 may prepare the soft member 110 by forming the soft member 110 by compression molding. When the soft elastomer contained in the soft member 110 is a silicone-based resin, the soft member 110 may be prepared by forming the soft member 110 by injection molding.
　流込工程Ｓ２においては、上述の内部空間Ｓが形成された、軟質エラストマーを含む軟質部材１１０に対して、開口Ｏから内部空間Ｓに未発泡の発泡性樹脂を流し込む。さらに、配置工程Ｓ３においては、内部空間Ｓにおいて未発泡の発泡性樹脂を発泡させることにより、軟質部材１１０より単位体積あたりの質量が小さい発泡部材１２０を、軟質部材１１０の底部１１１および周側部１１５に接合するように内部空間Ｓに配置する。 In the pouring step S2, the unfoamed foamable resin is poured from the opening O into the internal space S into the soft member 110 containing the soft elastomer in which the above-mentioned internal space S is formed. Further, in the arrangement step S3, by foaming the unfoamed foamable resin in the internal space S, the foamed member 120 having a smaller mass per unit volume than the soft member 110 is formed on the bottom 111 and the peripheral side portion of the soft member 110. It is arranged in the internal space S so as to be joined to 115.
　これにより、クッション部材１００の重量増加を抑制しつつ、軟質部材１１０の外表面積を大きくすることができるとともに、内部空間Ｓでの発泡性樹脂の発泡により、発泡部材１２０と軟質部材１１０とを互いに容易に密着させることができる。 As a result, the outer surface area of the soft member 110 can be increased while suppressing the weight increase of the cushion member 100, and the foamed member 120 and the soft member 110 can be brought together by foaming the foamable resin in the internal space S. It can be easily brought into close contact.
　なお、未発泡の発泡性樹脂は、たとえば加熱により発泡させることができる。また、配置工程Ｓ３においては、未発泡の発泡性樹脂を発泡させる前に、開口Ｏを封止するような蓋材を配置した後、内部空間Ｓにおいて未発泡の発泡性樹脂を発泡させてもよい。これにより、所望の体積、密度および形状を有する発泡部材１２０を備えるクッション部材１００を製造することができる。上記蓋材は、未発泡の発泡性樹脂を発泡させた後、取り除くことができることが好ましい。 The unfoamed foamable resin can be foamed by heating, for example. Further, in the arrangement step S3, before foaming the unfoamed foamable resin, a lid material for sealing the opening O may be arranged, and then the unfoamed foamable resin may be foamed in the internal space S. good. This makes it possible to manufacture the cushion member 100 having the foamed member 120 having a desired volume, density and shape. It is preferable that the lid material can be removed after foaming the unfoamed foamable resin.
　また、本実施形態に係るクッション部材１００の製造方法においては、発泡性樹脂は、軟質エラストマーと同系統のポリマーからなる。これにより、軟質部材１１０と発泡部材１２０との接着力が向上し、軟質部材１１０と発泡部材１２０とが互いに剥離することを抑制できる。 Further, in the method for manufacturing the cushion member 100 according to the present embodiment, the foamable resin is made of a polymer of the same type as the soft elastomer. As a result, the adhesive force between the soft member 110 and the foamed member 120 is improved, and it is possible to prevent the soft member 110 and the foamed member 120 from peeling off from each other.
　また、本実施形態に係るクッション部材１００の製造方法においては、発泡性樹脂および軟質エラストマーは、いずれもポリウレタン系ポリマーからなる。ポリウレタン系ポリマーからなる発泡性樹脂は、発泡後の冷却において体積の縮小が比較的小さいため、軟質部材１１０に発泡部材１２０を密着させることができる。 Further, in the method for manufacturing the cushion member 100 according to the present embodiment, both the foamable resin and the flexible elastomer are made of a polyurethane polymer. Since the volume reduction of the foamable resin made of the polyurethane polymer is relatively small in cooling after foaming, the foamed member 120 can be brought into close contact with the soft member 110.
　上記の工程により、本発明の一実施形態に係るクッション部材１００が製造される。なお、本実施形態に係る靴底１０は、従来公知の方法によりクッション部材１００をミッドソール１２に配置し、さらに、従来公知の方法によりミッドソール１２をアウトソール１１に接合することで、製造することができる。また、本実施形態に係る靴１は、従来公知の方法により靴底１０とアッパー２０とを互いに接合することで、製造することができる。 By the above steps, the cushion member 100 according to the embodiment of the present invention is manufactured. The sole 10 according to the present embodiment is manufactured by arranging the cushion member 100 on the midsole 12 by a conventionally known method and further joining the midsole 12 to the outsole 11 by a conventionally known method. be able to. Further, the shoe 1 according to the present embodiment can be manufactured by joining the sole 10 and the upper 20 to each other by a conventionally known method.
　今回開示された実施形態はすべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は上記した説明ではなくて請求の範囲によって示され、請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 The embodiments disclosed this time should be considered to be exemplary in all respects and not restrictive. The scope of the present invention is shown by the claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the claims.
　１　靴、１０　靴底、１１　アウトソール、１２　ミッドソール、２０　アッパー、１００　クッション部材、１１０　軟質部材、１１１　底部、１１２　下面、１１３　突出部、１１４　周縁、１１５　周側部、１１５Ａ　第１側部、１１５Ｂ　第２側部、１１５Ｃ　第３側部、１１５Ｄ　第４側部、１１６Ａ　第１内側面、１１６Ｂ　第２内側面、１１６Ｃ　第３内側面、１１６Ｄ　第４内側面、１１７Ａ　第１外側面、１１７Ｂ　第２外側面、１１７Ｃ　第３外側面、１１７Ｄ　第４外側面、１１８Ａ　第１上端面、１１８Ｂ　第２上端面、１１８Ｃ　第３外側上端面、１１８Ｄ　第４外側上端面、１１９Ｃ　第３内側上端面、１１９Ｄ　第４内側上端面、１２０　発泡部材、２００　第１ミッドソール、２１０　第１上面、２２０　第１下面、３００　第２ミッドソール、３１０　第２上面、３１１　第２前側上面、３１２　第２後側上面、３１３　第２中央上面、３２０　第２下面、３３０　貫通孔、Ｏ　開口、Ｓ　内部空間。 1 shoe, 10 sole, 11 outsole, 12 midsole, 20 upper, 100 cushion member, 110 soft member, 111 bottom, 112 lower surface, 113 protrusion, 114 peripheral edge, 115 peripheral side, 115A first side, 115B 2nd side, 115C 3rd side, 115D 4th side, 116A 1st inner side, 116B 2nd inner side, 116C 3rd inner side, 116D 4th inner side, 117A 1st outer side, 117B first 2 outer surface, 117C, third outer surface, 117D, fourth outer surface, 118A, first upper end surface, 118B, second upper end surface, 118C, third outer upper end surface, 118D, fourth outer upper end surface, 119C, third inner upper end surface, 119D. 4th inner upper end surface, 120 foam member, 200 1st midsole, 210 1st upper surface, 220 1st lower surface, 300 2nd midsole, 310 2nd upper surface, 311 2nd front upper surface, 312 2nd rear upper surface, 313 2nd center upper surface, 320 2nd lower surface, 330 through hole, O opening, S internal space.

Claims (9)

  1. 　底部と、該底部の周縁の全周に沿うように位置する周側部とを有する、軟質エラストマーを含む軟質部材と、
    　前記軟質部材の前記底部と前記周側部とによって形成された内部空間に位置する、発泡性樹脂を含む発泡部材とを備え、
    　前記発泡部材は、前記軟質部材の前記底部および前記周側部に接合されており、かつ、前記軟質部材より単位体積あたりの質量が小さい、クッション部材。     A soft member containing a soft elastomer, having a bottom and a peripheral side portion located along the entire circumference of the peripheral edge of the bottom.
    A foamed member containing a foamable resin, which is located in an internal space formed by the bottom portion and the peripheral side portion of the soft member, is provided.
    The foam member is a cushion member that is joined to the bottom portion and the peripheral side portion of the soft member and has a smaller mass per unit volume than the soft member.
  2. 　前記発泡性樹脂は、前記軟質エラストマーと同系統のポリマーからなる、請求項１に記載のクッション部材。 The cushion member according to claim 1, wherein the foamable resin is made of a polymer of the same type as the soft elastomer.
  3. 　前記発泡性樹脂および前記軟質エラストマーは、いずれもポリウレタン系ポリマーからなる、請求項２に記載のクッション部材。 The cushion member according to claim 2, wherein both the foamable resin and the soft elastomer are made of a polyurethane polymer.
  4. 　請求項１から請求項３のいずれか１項に記載の前記クッション部材を備える、靴底。 A shoe sole provided with the cushion member according to any one of claims 1 to 3.
  5. 　前記軟質部材は、前記靴底のアッパー側以外の表面において少なくとも一部が露出している、請求項４に記載の靴底。 The sole according to claim 4, wherein at least a part of the soft member is exposed on a surface other than the upper side of the sole.
  6. 　請求項４または請求項５に記載の前記靴底を備える、靴。 A shoe having the sole according to claim 4 or 5.
  7. 　底部と、該底部の周縁の全周に沿うように位置する周側部とを有し、前記底部とは反対側において前記周側部によって形成が開口され、前記底部、前記周側部および前記開口に囲まれた内部空間が形成された、軟質エラストマーを含む軟質部材に対して、前記開口から前記内部空間に発泡性樹脂を流し込む工程と、
    　前記内部空間において前記発泡性樹脂を発泡させることにより、前記軟質部材より単位体積あたりの質量が小さい発泡部材を、前記軟質部材の前記底部および前記周側部に接合するように前記内部空間に配置する工程とを備える、クッション部材の製造方法。     It has a bottom portion and a peripheral portion located along the entire circumference of the peripheral edge of the bottom portion, and the formation is opened by the peripheral side portion on a side opposite to the bottom portion, and the bottom portion, the peripheral side portion, and the peripheral portion are opened. A step of pouring a foamable resin from the opening into the internal space into a soft member containing a soft elastomer in which an internal space surrounded by the opening is formed.
    By foaming the foamable resin in the internal space, a foamed member having a smaller mass per unit volume than the soft member is arranged in the internal space so as to be joined to the bottom portion and the peripheral side portion of the soft member. A method of manufacturing a cushion member, which comprises a step of making a cushion member.
  8. 　前記発泡性樹脂は、前記軟質エラストマーと同系統のポリマーからなる、請求項７に記載のクッション部材の製造方法。 The method for manufacturing a cushion member according to claim 7, wherein the foamable resin is made of a polymer of the same type as the soft elastomer.
  9. 　前記発泡性樹脂および前記軟質エラストマーは、いずれもポリウレタン系ポリマーからなる、請求項８に記載のクッション部材の製造方法。 The method for manufacturing a cushion member according to claim 8, wherein both the foamable resin and the soft elastomer are made of a polyurethane polymer.
PCT/JP2020/015164 2020-04-02 2020-04-02 Cushion member, shoe sole provided with same and shoes provided with same, and method for manufacturing cushion member WO2021199398A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/015164 WO2021199398A1 (en) 2020-04-02 2020-04-02 Cushion member, shoe sole provided with same and shoes provided with same, and method for manufacturing cushion member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/015164 WO2021199398A1 (en) 2020-04-02 2020-04-02 Cushion member, shoe sole provided with same and shoes provided with same, and method for manufacturing cushion member

Publications (1)

Publication Number Publication Date
WO2021199398A1 true WO2021199398A1 (en) 2021-10-07

Family

ID=77930176

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/015164 WO2021199398A1 (en) 2020-04-02 2020-04-02 Cushion member, shoe sole provided with same and shoes provided with same, and method for manufacturing cushion member

Country Status (1)

Country Link
WO (1) WO2021199398A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08303A (en) * 1994-06-21 1996-01-09 Asics Corp Shock elimination type shoe
JP2002238613A (en) * 2001-02-20 2002-08-27 Zett Corp Sole
WO2006038357A1 (en) * 2004-09-30 2006-04-13 Asics Corporation Cushioning device for shoe bottom
WO2007122722A1 (en) * 2006-04-21 2007-11-01 Asics Corporation Shoe sole with reinforcing structure and shoe sole with damping structure
JP2009511108A (en) * 2005-10-10 2009-03-19 キブン アクチェンゲゼルシャフト Footwear as matte socks
JP2010051624A (en) * 2008-08-29 2010-03-11 Taika:Kk Cushioning material and shoe equipped with the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08303A (en) * 1994-06-21 1996-01-09 Asics Corp Shock elimination type shoe
JP2002238613A (en) * 2001-02-20 2002-08-27 Zett Corp Sole
WO2006038357A1 (en) * 2004-09-30 2006-04-13 Asics Corporation Cushioning device for shoe bottom
JP2009511108A (en) * 2005-10-10 2009-03-19 キブン アクチェンゲゼルシャフト Footwear as matte socks
WO2007122722A1 (en) * 2006-04-21 2007-11-01 Asics Corporation Shoe sole with reinforcing structure and shoe sole with damping structure
JP2010051624A (en) * 2008-08-29 2010-03-11 Taika:Kk Cushioning material and shoe equipped with the same

Similar Documents

Publication Publication Date Title
TWI823602B (en) Article of footwear
CN112469300B (en) Bladder for an article of footwear
US20230200490A1 (en) Article of footwear
EP1916917B1 (en) Footwear sole component with an insert
CA2483699C (en) Footwear sole component with a single sealed chamber
CN101304675B (en) Article of footwear with midsole having higher density peripheral portion
CN101282664B (en) Shoe insole
FR2520986A1 (en) IMPROVED ATHLETICS SHOE
US20070101612A1 (en) Article of footwear having force attenuation membrane
CN102724892B (en) Footwear article
KR100575466B1 (en) Cross-linked blown foam for in-sole which having inner cushion
US20180338571A1 (en) Article of footwear with auxetic sole structure having a filled auxetic aperture
US20210330026A1 (en) Shoe
WO2021199398A1 (en) Cushion member, shoe sole provided with same and shoes provided with same, and method for manufacturing cushion member
CN112601472B (en) Sole member and shoe
CN104780799A (en) Article of footwear
JP4788702B2 (en) Footwear and its insole and cushion for insole
WO2022074845A1 (en) Shoe sole and shoe comprising same
EP2381809B1 (en) Orthopedic module
TWI832077B (en) Sole structure for article of footwear
JP7090857B1 (en) Shoe insoles

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20928443

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20928443

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP