JP4718956B2 - Floating finger prevention insole pad and footwear with it - Google Patents

Description

  The present invention relates to an insole pad that is designed to promote prevention of a floating finger when the user wears footwear, and footwear to which the insole pad is attached.

  Insole pads used for footwear are known for various uses and configurations. For example, in Japanese Utility Model Publication No. 3-47527 as a shoe insole, “consisting of a sheet portion composed of an elastic body such as elastic polyurethane and a viscoelastic body such as viscoelastic polyurethane bonded to the lower side or inside thereof. A viscoelastic polyurethane portion is used for a longitudinal arch portion and / or a lateral arch portion, and the elastic polyurethane is formed by the presence of the viscoelastic polyurethane in the arch portion. There is a disclosure of a shoe insole (prior art 1) characterized by being inflated.

  In addition, utility model registration publication No. 2554376 (Japanese Utility Model Laid-Open No. 6-235515) states that “the lateral arch of the sole, the vertical A flat fabric having a contour formed so as to cover the arch (inside and outside) almost completely and having rounded corners, and a viscoelastic polyurethane resin pad integrally bonded to the back surface of the fabric, A dual-axis arch pad (prior art 2) is disclosed in which the lower surface of the arch pad has a convex lens-like curved surface.

  Further, in Japanese Patent Laid-Open No. 7-79805, “a base material 11 made of a flexible polyurethane foam having a hardness of 80 degrees or more. 20 to 20 having a convex shape in the vicinity of the second metatarsal bone head position on the base material 11. Convex part 12 made of a flexible polyurethane foam having a hardness of 60 degrees, a base material 11 or a skin material 13 laminated on the convex part 12. In a shoe comprising these base material 11, convex part 12, and skin material 13 The structure of “Shiki (Prior Art 3)” is disclosed.

Furthermore, Japanese Patent Application Laid-Open No. 11-226042 discloses “an arch pad that is effective at the same time for maintaining the function of the foot during running or for maintaining the periphery of the heel of the foot that is useful for preventing obstacles”. A gently downward projecting horizontal arch pad portion, an inner vertical arch pad portion, and an inner vertical arch pad portion each having a contour of the entire bottom and corresponding to portions corresponding to the lateral arch, the inner vertical arch and the outer vertical arch of the sole, respectively There is a disclosure of a shoe insole (prior art 4) comprising an elastic or viscoelastic pad integrally having at least one of the outer longitudinal arch pad portions.
Japanese Utility Model Publication 3-47527 Utility Model Registration Gazette No. 2554376 (Act No. 6-23515) JP-A-7-79805 JP-A-11-226042

  In recent years, there has been a tendency that the number of children who cannot run straight increases due to a decrease in physical strength, especially the physical strength of children due to changes in the surrounding environment. The present inventors investigated the legs of kindergarten children and elementary school students, and as a tendency grasped by the survey, it has been found that many children are leaning in the standing posture. The load on the heel tends to cause the toes to float, and the muscular strength balance tends to be lost, which tends to deteriorate the posture. If you are forced into such a physical environment when you are a growing child, you may experience various physical problems even after you grow up.

  The present invention provides a floating finger prevention insole pad that facilitates acquisition of a better posture by preventing a floating finger during standing posture and walking, and footwear equipped with the same.

  In order to solve the above-mentioned problem, an insole pad in which an elastic portion made of an elastic material having a hardness higher than that of the base material portion is provided on the lower surface of the flexible base material portion having a foot shape as a whole, The contour starts from the heel side in the toe direction, and corresponds to the inner side of the first heel with the middle position of the metatarsal bone in the region corresponding to the first heel-second heel and the region corresponding to the fifth heel. In the region corresponding to the region and the outer side of the fifth heel, the position exceeding the middle of the proximal phalanx is the peripheral edge, and in the region corresponding to the second heel-third heel, the position exceeding the joint between the metatarsal phalanx is the peripheral edge. -A floating finger preventing insole pad is proposed, characterized in that a region in front of the metatarsal bone head is set as a peripheral edge in a region corresponding to the fourth intercostal space.

    A floating finger-preventing insole pad described in the column 0008 is proposed in which portions corresponding to the inner longitudinal arch, the outer longitudinal arch, and the lateral arch of the elastic portion are thickened so as to rise from the other portions.

    A floating finger preventing insole pad described in the 0008 column or the 0009 column is proposed in which the elastic portion is gradually thickened from the central portion toward the outer peripheral edge and the inner peripheral edge in a portion corresponding to the rib.

  The footwear to which the floating finger prevention insole pad according to any one of the columns 0008, 0009 or 0010 is mounted, wherein the shape of the bottom surface of the base portion of the floating finger prevention insole pad is substantially the same as the shape of the bottom surface in the footwear. Suggest matching footwear. In the present invention, “inside” means the left foot side when viewed from the right foot, right foot side when viewed from the left foot, and “outside” means the opposite side of “inside”.

  According to the present invention, in the region inside the first heel, the elastic portion has a peripheral edge at a position exceeding the middle of the proximal phalanx, thereby preventing the inward displacement of the first heel and ). By preventing overpronation, the loss of function of the first rod is prevented. Similarly, by setting the elastic part in the region outside the 5th rib as the periphery, the position beyond the middle of the proximal phalanx is used as a rim to prevent the shift to the outside of the 5th rib and prevent over-suppression. There is an action to promote. By preventing over-suppression (excessive overshooting), function loss of the fifth rod is prevented. Then, by preventing the displacement to the inside of the first heel and preventing the displacement to the outside of the fifth heel, each of the above-mentioned peripheral edges of the elastic portion can be accurately arranged at a desired foot bone position.

  In the region between the second heel and the third heel, the elastic portion tries to use the foot heel, particularly the first heel and the second heel, by setting the position beyond the joint between the middle foot heel joint as the periphery.

  Then, in the region between the third and fourth heels, the elastic part uses the toes, particularly the third and fourth heels, by setting the position corresponding to the position in front of the metatarsal head as the periphery. And

  In this way, floating finger prevention is promoted by encouraging the use of the toes.

  According to the second aspect of the present invention, the first heel is supported by the support of the inner longitudinal arch, and the fifth heel is supported by the support of the outer longitudinal arch. The work to try and use the second heel, the third heel, and the fourth heel by the support of the lateral arch respectively increase, and the prevention of floating fingers is further promoted.

  Further, according to the invention of claim 3, the heel part is wrapped from the inside and outside by the elastic part, and an excessive inward and outward inclination or deviation (overtime, overtime) when landing on the heel. Therefore, it is difficult to cause bad blurring, and floating finger prevention is promoted more efficiently.

  According to the invention of claim 4, since the floating finger prevention insole pad is fixed at a predetermined position in the footwear, each of the aforementioned peripheral edges of the elastic portion can be accurately placed at a desired foot bone position. it can.

  FIG. 1 is a rear view of one embodiment of the floating finger prevention insole pad according to the present invention, and FIG. 1 is an explanatory view of a foot bone position when a foot is put on footwear laid with the floating finger prevention insole pad according to the present invention. 2 is a sectional view taken along line WW in FIG. 2, FIG. 4 is a sectional view taken along line XX in FIG. 2, FIG. 5 is a sectional view taken along line YY in FIG. 2, and FIG. 6 is a sectional view taken along line ZZ in FIG. A description will be given based on FIG. 8 which is an explanatory diagram of a foot bone showing names of respective parts of the bone.

  A floating finger preventing insole pad 1 according to an embodiment of the present invention includes a flexible base portion 2 having a foot shape as a whole and an elastic portion 3 provided on the lower surface of the base portion 2.

  The material of the base material portion 2 may be a flexible material, but a material with high buffering properties is preferable. For example, a synthetic resin foam such as rubber, polyurethane, EVA, polyethylene, or soft vinyl chloride is preferable, but a fiber material such as woven fabric, knitted fabric, nonwoven fabric, or felt may be used.

  It is preferable that the bubble rate (volume ratio occupied by bubbles) of the synthetic resin foam is 50 to 90% by volume. If the bubble ratio is less than 50% by volume, the flexibility of the base material portion 2 tends to be poor, and conversely if it exceeds 90% by volume, it tends to be apt to be distorted. Lack of flexibility or partial settling and distortion of the base material portion 2 deteriorates the buffering property, and the shape of the elastic portion is not accurately transmitted to the foot, thereby reducing the effect of preventing floating fingers.

  The base material part 2 using the material in the range of 50 to 90% by volume of air bubbles is flat on the upper and lower surfaces in the portion where the foot is placed, and has a thickness of 0.095L to 0.22Lmm in order to improve buffering. (L is foot length size [cm]). For example, in the case of foot length size 16 cm, it is preferable to form with a thickness of 1.5 mm to 3.5 mm. Moreover, it is preferable that the surface hardness of the base material part 2 is 1-30 degree | times (durometer type A [hardness immediately after pressurization]). When the surface hardness of the base material part 2 is less than 1 degree, the buffering property is poor, and when it is more than 30 degrees, the shape of the elastic part 3 provided on the lower surface of the base material part 2 is difficult to be transmitted to the back surface of the foot.

  It is preferable to provide a skin material (not shown) on the entire upper surface side of the base member 2. The material for the skin material is preferably a woven fabric, a knitted fabric, a non-woven fabric, a raised fabric or the like. The fabric has a function of introducing air, sweat, and moisture between the yarns and between the fibers and discharging them to the outside.

  The elastic portion 3 is formed such that the inner vertical arch 20, the outer vertical arch 21 and the horizontal arch 22 shown in FIG. 2 are relatively thicker than the other portions. Moreover, it is preferable that the portion between the second and third metatarsals 23 is slightly raised. Furthermore, it is preferable that the front part 201 and the rear part 202 of the inner vertical arch 20 and the front part 211 and the rear part 212 of the outer vertical arch 21 are slightly raised.

  The front part 201 of the inner vertical arch 20 is an important part that allows the first rod to be used efficiently, and suppresses overpronation, and the first rod from the middle stage of stance (just before kicking) to the time of kicking Encourage grounding and enable powerful kickout. The rear portion 202 of the inner vertical arch 20 directly acts on the distance projection J, thereby supporting the inner vertical arch 20 from the heel contact to the middle stage of stance and suppressing overpronation.

  The front portion 211 of the outer vertical arch 21 supports the outer side of the foot from the middle stage of stance to the time of kicking and enables powerful kicking. The rear part 212 of the outer vertical arch 21 directly acts on the lower end of the cubic bone K, thereby supporting the outer vertical arch 21 from the heel contact to the middle stage of stance, suppressing overpronation, and reducing the size efficiently.促 す Encourage abduction (open the fifth cage).

  The elastic part 3 is made of an elastic material having a hardness higher than that of the base part 2. The material of the elastic part 3 is preferably a solid substance made of a synthetic resin such as rubber, polyurethane, EVA, polyethylene, soft vinyl chloride or the like, or a fine foamed foam, that is, a foam having a smaller cell ratio than the material of the base part 2. However, fiber materials, such as a woven fabric, a knitted fabric, a nonwoven fabric, and a felt, may be sufficient. The cell ratio of the synthetic resin solid body or fine foamed foam is preferably 0 to 50% by volume. When the bubble ratio exceeds 50% by volume, it becomes easy to get loose (distorted), and the effect of preventing floating fingers does not last long.

  The surface hardness of the elastic part 3 is preferably at least higher than the surface hardness of the base material part 2 and 10 to 70 degrees (durometer type A [hardness immediately after pressing]). If the surface hardness of the elastic portion 3 is less than 10 degrees, the effect of preventing floating fingers is reduced due to the weight of the wearer. Conversely, if the surface hardness is more than 70 degrees, it cannot follow the bending of the shoe during walking. It tends to impair comfort.

  The outline of the elastic part 3 is an arcuate shape in plan view in the midpoint of the first metatarsal FA in the region corresponding to the first toe A and the second toe B starting from the heel side N toward the toe M direction. In the region corresponding to the fifth heel E, the middle position of the fifth metatarsal FE is the fifth peripheral edge 35 having a circular arc shape in plan view, and in the region corresponding to the inside of the first heel A, The middle position of the first proximal phalanx head GA is the first peripheral edge 31, and in the region corresponding to the outside of the fifth heel E, the middle position of the fifth proximal phalange GE is the sixth peripheral edge 36, and the second heel B-third In the region corresponding to the heel C, the position slightly beyond the second metatarsal interphalangeal joint HB is the third peripheral edge 33, and in the region corresponding to the third heel C-fourth heel D, the fourth metatarsal head ID The position in front of is the fourth peripheral edge 34. The first peripheral edge 31 to the sixth peripheral edge 36 are continuous peripheral edges.

  Since the second peripheral edge 32 is formed in an arc shape, it supports the toe ball (first heel) ball of the foot and promotes the grounding of the first heel. The second-third heel-metatarsal protuberance 23 supports this portion of the foot, thereby efficiently moving the load in the first heel direction smoothly when kicking out. The lateral arch 22 supports the third to fourth heel portions to promote the ground contact of the third and fourth heels in the middle of the stance, and smoothes the load movement when kicking out. The fifth peripheral edge 35 is formed in an arc shape, thereby supporting a small foot (fifth heel) ball of the foot and prompting the fifth heel to touch the ground.

  The elastic part 3 is a wedge-shaped portion with a thick inner cross section from the first peripheral edge 31 to the second peripheral edge 32, and the outer cross section is the part from the fifth peripheral edge 35 to the sixth peripheral edge 36. The thick rust type. By adopting such a cross-sectional shape, the prevention of the displacement of the first and fifth rods is further promoted. In addition, the first peripheral edge 31 suppresses overpronation of the first heel and suppresses distorted torsion, thereby urging the main heel abduction (opening the first heel). Furthermore, the sixth peripheral edge 36 suppresses overpronation of the fifth eyelid and suppresses distorted torsion.

  The collar part 30 of the elastic part 3 is formed so as to gradually increase from the central part toward the outer peripheral edge and the inner peripheral edge. In this embodiment, the central portion 300 of the collar portion 30 of the elastic portion 3 is hollowed in an oval shape, and becomes thicker while gradually increasing the angle from the central portion 300 toward the outer peripheral edge 301 and the inner peripheral edge 302. . At this time, it is preferable to make the outer peripheral edge 301 thicker than the inner peripheral edge 302. The inner peripheral edge 302 makes the load movement smooth in the fifth hook direction, and the outer peripheral edge 301 makes the load movement smooth in the first hook direction. Further, if the thickness of the outer peripheral edge 301 is made thicker than the inner peripheral edge 302, the action of inducing load movement toward the first heel direction is enhanced, and the prevention of floating fingers is promoted efficiently.

  The elastic part 3 is thickened so that the part corresponding to each arch rises from the other part. The thickness of the elastic part 3 is not particularly limited, but the thickest part is preferably 0.15 L to 0.30 Lmm (L is a foot length size [cm]). At each peripheral edge, it is desirable that the thickness increases quickly toward the heel side N direction. The thickness of the portion corresponding to the second metatarsal interphalangeal joint HB of the third peripheral edge 33 is preferably 0.15 L (L is the foot length size).

  The present invention will be described based on an embodiment of manufacturing an insole pad 1 for preventing a floating finger for a foot length size of 16 cm.

  First, production of the base material portion 2 with the skin material of the insole pad 1 for preventing floating fingers will be described. A liquid polyol component containing a foaming agent and a liquid polyisocyanate component mixed and mechanically stirred are injected between a lower mold having a 4.0 mm depth recess and a flat upper mold to foam. Solidify. By this process, a foamed sheet having a thickness of 4.0 mm having thin skin layers on the front and back surfaces was obtained.

  A surface material made of a knitted fabric having a mass per unit area of 120 g / m 2 is attached to one surface of the foamed sheet, and then subjected to pressure molding with a press mold heated to 120 ° C., as shown in FIG. A base material part 2 with a skin material having a cup-like side was produced. The base material portion 2 with the skin material is formed so that the portion in contact with the bottom surface of the foot is substantially flat and has a uniform thickness (2.5 mm), and the bottom surface shape thereof matches the shape of the bottom surface inside the footwear. Further, the surface hardness of the base material part 2 with the skin material is 16 degrees (durometer type A [hardness immediately after pressing]), and the density is 0.35 g / cm 2 (bubble ratio 65% by volume). It was. In addition, the surface hardness in Asker C of the base material part 2 was 45 degree | times (hardness after a press for 30 seconds).

  Next, the production of the elastic portion 3 of the insole pad 1 for preventing floating fingers will be described. A mixture of a liquid polyol component containing a foaming agent and a liquid polyisocyanate component mixed and mechanically agitated, as shown in FIG. 2, a lower mold having a recess for forming an elastic part 3, and a flat upper mold The elastic part 3 was produced by injecting between and solidifying by foaming. The surface hardness of the elastic part 3 was 32 degrees (durometer type A [hardness immediately after pressing]), and its density was 0.85 g / cm 2 (bubble ratio 15% by volume). In addition, the surface hardness in Asker C of the elastic part 3 was 55 degree | times (hardness after 30 seconds of pressurization).

  As shown in FIGS. 1 and 2, the insole pad 1 for preventing floating fingers was manufactured by adhering the elastic portion 3 to the back surface side of the base material portion 2 with the skin material with an adhesive or the like as shown in FIGS. 1 and 2.

  It is an insole pad for preventing floating fingers, and is used by attaching it to athletic shoes and boots, and is particularly effective for children who are leaning against a load when standing.

The bottom view of one embodiment of the floating finger prevention insole pad which is this invention Explanatory drawing of the positional relationship of the said pad and a foot bone when putting a foot into the footwear which laid the padding pad for preventing floating finger of this invention WW sectional view of FIG. XX sectional view of FIG. YY sectional view of FIG. ZZ line sectional view of FIG. The perspective view of the base material part with a skin material of embodiment of the floating finger prevention insole pad which is this invention Foot bone explanatory diagram showing the position of each part when looking at the foot bone from above

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floating finger prevention insole pad 2 Base material part 20 Inner vertical arch 21 Outer vertical arch 22 Lateral arch 3 Elastic part N heel side M Toe side 30 heel part 300 Central part 301 Outer peripheral edge 302 Inner peripheral edge 31 1st peripheral edge 32 2nd peripheral edge 33 3rd peripheral edge 34 4th peripheral edge 35 5th peripheral edge 36 6th peripheral edge A 1st collar B 2nd collar C 3rd collar D 4th collar E 5th collar FA First metatarsal mid position FE 5 metatarsal bone Mid position GA 1st proximal phalange head GE 5th proximal phalanx HB 2nd metatarsal joint ID 4th metatarsal head J Distance process K Cubic bone

Claims (4)

An insole pad in which an elastic part made of an elastic material having a hardness higher than that of the base part is provided on the lower surface of the flexible base part having a foot shape as a whole, and the outline of the elastic part starts from the heel side In the region corresponding to the first and second heels and the region corresponding to the fifth heel in the toe direction, the middle position of the metatarsal bone is the periphery, and the region corresponding to the inside of the first heel and the outside of the fifth heel In the region where the middle phalanx exceeds the middle phalanx, the region corresponding to the second heel-third heel is the region exceeding the metatarsal joint joint, and the region corresponding to the third heel-fourth heel Then, a floating finger-preventing insole pad characterized by having a position in front of the metatarsal bone head as a periphery. 2. The floating finger prevention insole pad according to claim 1, wherein portions of the elastic portion corresponding to the inner vertical arch, the outer vertical arch, and the horizontal arch of the foot are thickened so as to rise from other portions. The floating finger prevention insole pad according to claim 1 or 2, wherein the elastic portion is gradually thickened from the central portion toward the outer peripheral edge and the inner peripheral edge at a portion corresponding to the rib. The footwear to which the floating finger preventing insole pad according to any one of claims 1 to 3 is attached, wherein the shape of the bottom surface of the base portion of the floating finger preventing insole pad is substantially the same as the shape of the bottom surface in the footwear. The footwear we are doing.

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