JP4564538B2 - Shoes and insoles - Google Patents

Description

  The present invention relates to a shoe and an insole for reducing a burden on a foot due to collapse of a lateral arch shape.

  In order to prevent pain and deformation of the foot, a shoe with a raised insole that matches the shape of the arch in the cross-sectional direction of the foot bone (lateral arch) so that the skeleton of the foot can be brought close to the ideal shape has been proposed (For example, refer to Patent Document 1).

JP 2002-282011 A

  However, such shoes cannot cover even the individual differences in the sole shape because the raised shape of the insole is fixed, and the lateral arch shape and the raised shape of the person wearing the shoes may not match . Furthermore, in conventional shoes, the entire raised portion is often made of a hard member having a strong repulsive force in order to maintain the raised shape of the insole. For this reason, when such shoes are worn, there are cases in which the soles whose lateral arch shape has collapsed and the hard raised portions collide with each other strongly, and there are cases where fishes or fish eyes with strong pain centered on the bumped portions.

  In particular, in women's shoes, the weight load ratio on the forefoot increases as the heel increases. For this reason, in the case of women's shoes with a high heel, as a result of applying a large weight to the forefoot part, the foot from the second metatarsal head to the fourth metatarsal head falls, the lateral arch shape collapses, and it is easy to become an open leg, Due to the deformation of the foot, especially when walking for a long time wearing high heels, it is painful due to the heels and fish eyes with strong pain from the 2nd metatarsal head part of the sole to the 4th metatarsal head part There was a condition involving

  Therefore, even in the case of conventional shoes with a raised insole, in the case of women's shoes, the heel must be lowered to 3 cm or less in order to prevent the spread foot and prevent the formation of eyelids or fish eyes. Did not get. For these reasons, it has been difficult for women's shoes that are always required to have a design to satisfy both the foot load reduction and the design with a high heel.

  The present invention has been made in view of the above-described drawbacks of the prior art, and provides a shoe and an insole that can reduce the burden on the foot due to the collapse of the lateral arch shape when the shoe is worn. Objective.

  In order to solve the above-described problems and achieve the object, a shoe according to the present invention includes a first elastic member provided at a portion corresponding to the center of the lateral arch of the forefoot, and the first An insole having a second elastic member that is softer than the first elastic member and is provided on both sides of the first elastic member, and the first elastic member and the The continuous surface shape with the second elastic member is characterized in that the original shape is substantially flat and has an insole that deforms upwardly when applied with a weight when worn.

  In the shoe according to the present invention, in the insole, the first elastic member is provided in a region substantially corresponding to the second metatarsal head, the third metatarsal head, and the fourth metatarsal head, The second elastic member is provided in a region substantially corresponding to the first metatarsal head and a region substantially corresponding to the fifth metatarsal head.

  Further, in the shoe according to the present invention, in the insole, the second elastic member has at least the first metatarsal head corresponding portion of the sole and the fifth portion when the weight applied during wearing is applied. The portion corresponding to the metatarsal head sinks, and the second elastic member has a repulsive force and thickness so that the upper surface of the second elastic member does not touch the bottom. And having a repulsive force and thickness capable of holding the surface shape convex upward while sinking with a sinking amount smaller than that of the second elastic member.

  In the shoe according to the present invention, in the insole, the first elastic member has an original shape in which both side surfaces seen from the foot tip direction are inclined at an angle of less than 90 ° with respect to the bottom surface. The elastic member of 2 has an original shape in which a side surface seen from the foot tip direction is inclined to an angle greater than 90 ° with respect to the bottom surface to some extent so that it can be bonded to at least a part of the side surface of the first elastic member. Features.

  In addition, the insole of the shoe according to the present invention is provided on both sides of the first elastic member provided at a portion corresponding to the center of the lateral arch of the forefoot portion and the first elastic member as seen from the foot tip direction. A second elastic member that is softer than the first elastic member, and a continuous surface shape of the first elastic member and the second elastic member when viewed from the tip direction is: The original shape is substantially flat, and is deformed to be convex upward when a weight is applied when worn.

  In the insole of the shoe according to the present invention, the first elastic member is provided in a region substantially corresponding to the second metatarsal head, the third metatarsal head, and the fourth metatarsal head, and the second elastic member. The member is provided in a region substantially corresponding to the first metatarsal head and a region substantially corresponding to the fifth metatarsal head.

  Further, in the insole of the shoe according to the present invention, the second elastic member has at least a portion corresponding to the first metatarsal head of the sole and the fifth metatarsal head when the weight applied during wearing is applied. When the corresponding portion sinks and has a repulsive force and a thickness such that the upper surface of the second elastic member does not touch the bottom, the first elastic member has a weight applied when worn. The second elastic member has a repulsive force and a thickness that can sink with a smaller sinking amount than the second elastic member and can retain the surface shape that is convex upward.

  Further, in the insole of the shoe according to the present invention, the first elastic member has an original shape in which both side surfaces viewed from the toe direction are inclined at an angle of less than 90 ° with respect to the bottom surface, and the second elastic member The member has an original shape in which a side surface viewed from the direction of the tip of the foot is inclined to an angle larger than 90 ° with respect to the bottom surface to the extent that it can be bonded to at least a part of the side surface of the first elastic member. .

  According to the present invention, the first elastic member provided at the portion corresponding to the center of the lateral arch of the forefoot part, and the first elastic member provided on both sides of the first elastic member when viewed from the foot tip direction, And the continuous surface shape of the first elastic member and the second elastic member when viewed from the direction of the toes is the weight applied during wearing. When the shoe is worn, the sole of the forefoot will be close to the side arch when the shoe is worn. In this case, the collapse of the lateral arch shape is reduced, and the burden on the foot due to the collapse of the lateral arch shape can be reduced.

FIG. 1 is a plan view showing an insole (insole) of a shoe according to an embodiment. 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is a cross-sectional view in the transverse arch direction when the shoe according to the first embodiment is worn. FIG. 4 is a cross-sectional view in the transverse arch direction of a shoe according to the prior art. FIG. 5 is a side view of the insole and the outsole shown in FIG. FIG. 6 is a cross-sectional view in the foot length direction when the shoe according to the embodiment is worn. FIG. 7 is a side view for explaining the shoe manufacturing method according to the embodiment. FIG. 8 is a side view for explaining the shoe manufacturing method according to the embodiment. FIG. 9 is a cross-sectional view in the transverse arch direction showing another example of the insole of the shoe according to the embodiment. FIG. 10 is a transverse arch direction sectional view showing another example of the insole in the shoe according to the embodiment. FIG. 11 is a cross-sectional view in the transverse arch direction showing another example of the insole in the shoe according to the embodiment. FIG. 12 is a transverse arch direction sectional view showing another example of the insole in the shoe according to the embodiment. FIG. 13 is a plan view showing the insole of the shoe according to the embodiment. 14 is a cross-sectional view taken along line CC of FIG. FIG. 15 is a cross-sectional view taken along line CC of FIG. FIG. 16 is a side view of the insole shown in FIG. FIG. 17 is a diagram for explaining a method of attaching the insole shown in FIG. 13 to the shoe.

Explanation of symbols

2,3,4,104,140,240,340,440 Insole 5 Outsole 6 Heel 8,503 Surface sheet 41, 141, 241, 341 Inner part 42, 142, 242, 342 Outer part 43, 143, 343 Central part 540 Insole 541 Peripheral part

  Hereinafter, a shoe and an insole of an embodiment of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments. In the description of the drawings, the same parts are denoted by the same reference numerals. Furthermore, it should be noted that the drawings are schematic, and the relationship between the thickness and width of each layer, the ratio of each layer, and the like are different from the actual ones. Also in the drawings, there are included portions having different dimensional relationships and ratios.

  The shoe according to the embodiment has an insole in which the elasticity corresponding to the side arch is partially changed so that the shape of the arch (lateral arch) in the cross-sectional direction of the foot bone does not collapse when the shoe is worn Is used. First, the insole of the shoes in this Embodiment is demonstrated.

  FIG. 1 is a plan view showing an insole (insole) of a shoe in the present embodiment. FIG. 1 illustrates an insole corresponding to the left foot as the insole of the shoe in the present embodiment. As shown in FIG. 1, the insole of the shoe in the present embodiment includes an insole 2 constituting the toe portion, an insole 3 corresponding to the arch to the heel portion, and a center corresponding to the ball joint B. The bottom 4 is made separately. The insole 2 and 3 are formed of an elastic material having a cushioning property. Further, the insoles 2, 3 and 4 are bonded to each other in contact with each other during shoe manufacture.

  Next, the insole 4 shown in FIG. 1 will be described in more detail with reference to FIGS. 2 and 3 together with FIG. 2 and 3 are views of a cross section of the insole 4 in FIG. 1 taken along the line AA along the ball joint B, as viewed from the foot tip direction. FIG. 2A is a cross-sectional view of the original shape of the insole 4 in a state where no shoes are worn by the user, and FIG. 2B is an insole 4 applied from the top of the insole 4 when worn. FIG. 3 is a cross-sectional view of the insole 4 in a state where the weight is applied to the base, and FIG. 3 is a cross-sectional view in a state where shoes are put on by the user, that is, when a foot is placed on the insole 4. . FIG. 3 illustrates a state after the completion of the shoe in which a thin surface sheet 8 made of nylon, polyester, leather, or the like that expands and contracts according to the shape change of the surface of the insole 4 is bonded onto the insole 4.

  As shown in FIGS. 1 to 3, the insole 4 is a portion corresponding to the ball joint B portion of the entire insole of the shoe, and originally a first arch that is formed with a lateral arch shape. A portion corresponding to the head of the bone to the fifth metatarsal head is formed.

  The insole 4 is divided into an inner part 41 corresponding to the thumb side of the foot, an outer part 42 corresponding to the little finger side of the foot, and a center part 43. The center part 43 is provided in the part corresponding to the center of the horizontal arch of the forefoot part. And the inner side part 41 and the outer side part 42 are provided in the both sides of the center part 43 seeing from the tip direction. The inner portion 41, the outer portion 42, and the central portion 43 are formed of an elastic material. Furthermore, each part in the insole 4 will be described in detail.

  The medial portion 41 is provided in a region substantially corresponding to the first metatarsal head. In the inner part 41, the width W1 on the ball joint B is such that the region corresponding to the first metatarsal head of the sole on the shoe is worn on the inner part 41 when the shoe is worn. 4 The width W is about 30% of the entire width W, and the length Lf in the foot length direction from the end portion in the foot tip direction to the ball joint B is about 8% of the foot length Lt. The length La in the foot length direction from the joint B to the end in the heel direction is approximately 6% of the foot length Lt.

  The outer portion 42 is provided in a region substantially corresponding to the fifth metatarsal head. In the outer side portion 42, as shown in FIG. 1, the width W2 on the ball joint B is such that a region corresponding to the fifth metatarsal head of the sole of the foot is on the outer side portion 42 when the shoe is worn. It has a width of about 30% of the entire width W of the insole 4 on the ball joint B. Like the inner side portion 41, the length Lf in the foot length direction from the end in the foot tip direction to the ball joint B is The length La is about 8% of the length Lt, and the length La in the foot length direction from the ball joint B to the end in the heel direction is about 6% of the foot length Lt.

  The central portion 43 is provided in a region substantially corresponding to the second metatarsal head, the third metatarsal head, and the fourth metatarsal head. In the central portion 43, as shown in FIG. 1, regions corresponding to the second metatarsal head, the third metatarsal head, and the fourth metatarsal head on the sole are on the central portion 43 when shoes are worn. As described above, the width W3 on the ball joint B has a width of about 40% of the entire width W of the insole 4 on the ball joint B. The length Lf in the foot length direction from the ball joint B to the ball joint B is about 8% of the foot length Lt, and the length La in the foot length direction from the ball joint B to the end in the heel direction is the foot length. It has a length of about 6% of Lt. The first metatarsal head to the fifth middle arch are formed even when a high heel is provided or when the entire foot is shifted in the toe direction due to the weight of the weight during walking or the like. The length in the foot length direction of the inner side portion 41, the outer side portion 42 and the central portion 43 of the midsole 4 so that the sole portion corresponding to the head of the foot hits the midsole 4. The length is longer than the length in the heel direction from the ball joint B. That is, in the inner part 41, the outer part 42, and the central part 43, the length Lf is set longer than the length La.

  2 (1), the continuous surface shape of the inner portion 41, the outer portion 42, and the central portion 43 is processed so that the original shape is substantially flat. The central portion 43 has a thickness D1.

  Further, as shown in FIG. 2A, the entire side surfaces of the inner portion 41 and the outer portion 42 on the central portion 43 side are bonded to the entire respective side surfaces of the central portion 43 with an adhesive. In addition, when the side surface of the inner portion 41 and the outer portion 42 on the central portion 43 side and each side surface of the central portion 43 are bonded using an adhesive, hot pressing may be performed under heating conditions.

  As shown in FIG. 2 (1), the central portion 43 has an original shape in which both side surfaces viewed from the toe direction are inclined at an angle θ1 of less than 90 ° with respect to the bottom surface, and the inner portion 41 and the outer portion. 42 has an original shape in which the side surface on the central portion 43 side viewed from the foot tip direction is inclined at an angle θ2 larger than 90 °. The inclination angle θ2 of each side surface of the inner portion 41 and the outer portion 42 on the central portion 43 side is such that each side surface of the inner portion 41 and the outer portion 42 on the central portion 43 side can be securely bonded to the entire side surfaces of the central portion 43. Further, the angle is set to correspond to the inclination angle θ1 of both side surfaces of the central portion 43. For example, θ2 is (180 ° −θ1).

  Further, the elasticity of the inner bottom 4 is partially changed so that the lateral arch shape does not collapse when the shoe is worn, and the inner portion 41 and the outer portion 42 are different from the central portion 43 in elasticity. Have Specifically, the central portion 43 is formed of an elastic material having a strong repulsive force, and the inner portion 41 and the outer portion 42 are formed of an elastic material that is softer than the central portion 43.

  And each elasticity of the inner side part 41, the outer side part 42, and the center part 43 is, as shown in FIG. The continuous surface shape of the outer side part 42 and the center part 43 is set to be a convex shape upward.

  The inner portion 41 has a portion corresponding to the first metatarsal head B1 that rides on the inner portion 41 as shown in FIG. 2 (2) and FIG. It has a repulsive force and a thickness D21 such that it sinks and the upper surface of the inner portion 41 does not touch the bottom. The outer portion 42 has a portion corresponding to the fifth metatarsal head B5 that rides on the outer portion 42 as shown in FIG. 2 (2) and FIG. It has a repulsive force and thickness D22 that sinks and does not allow the upper surface of the outer portion 42 to touch the bottom. In addition, the center portion 43 has a sinking thickness D23 (> D21, D22) with a sinking amount smaller than that of the inner portion 41 and the outer portion 42 when a weight is applied from the upper part of the insole 4 when worn. And has a repulsive force and thickness capable of maintaining the continuous surface shapes of the inner portion 41, the outer portion 42, and the central portion 43 that are deformed upward.

  The elasticity of the inner part 41, the outer part 42, and the central part 43 is estimated when the approximate weights applied to the inner part 41, the outer part 42, and the central part 43 are estimated and these weights are applied. Is set to have a convex shape. Here, when not wearing shoes, the weight load factor on the ball joint B of the forefoot is about 22%. The weight load factor applied to the ball joint B of the forefoot increases as the height of the heel increases, and when a shoe having a heel height of 4 cm is worn, the weight on the ball joint B of the forefoot is increased. The load factor is approximately 32%, and when a shoe with a heel height of 8 cm is worn, the weight load factor on the ball joint B of the forefoot is approximately 63%. Moreover, the weight load factor concerning a forefoot part changes with a center, an inner side, and an outer side. Further, the weight load factor applied to the forefoot part is different between when kicking out and when stationary. For this reason, the elasticity of the inner part 41, the outer part 42, and the center part 43 includes the weight load factor of each part of the sole corresponding to the heel height, the weight load factor at the time of kicking, the average weight of the wearer, etc. Set based on The central portion 43 is formed of a relatively hard cushioning EVA sponge or the like, and the inner portion 41 and the outer portion 42 are cushioned low resilience sponge materials such as RS foam (Daiyu Shoji Co., Ltd.). Made of) or X2 (manufactured by Bruggemann) or urethane injected with gas.

  Since the elasticity of the insole 4 is partially changed in this way, as shown in FIG. 3, when a shoe having the insole 4 is worn, that is, when the weight applied during wearing is applied, The medial portion 41 corresponding to the first metatarsal head B1 and the lateral portion 42 corresponding to the fifth metatarsal head B5 sink, and the second metatarsal head B2, the third metatarsal head B3, and the fourth metatarsal head B4. The central portion 43 corresponding to the submerged portion sinks with a smaller amount of sinking than the inner portion 41 and the outer portion 42. The corners at both ends of the upper portion of the central portion 43 are also deformed so as to be crushed by the stress applied on the midsole 4.

  As a result, as shown in FIG. 3, when the weight applied during wearing is applied, the stress applied to the insole 4 is appropriately dispersed, and the continuous surface shape of the inner part 41, the outer part 42 and the central part 43 is obtained. Deforms upward from a flat original shape. In particular, since each side surface of the inner part 41, the outer part 42, and the central part 43 has an original shape inclined with respect to the bottom surface in accordance with the transverse arch shape, the continuous surface shape of the inner part 41, the outer part 42, and the central part 43 is It can be deformed into a gentle convex shape close to the lateral arch shape of the sole. Further, the inner portion 41 and the outer portion 42 have repulsive force and thickness so that the upper surfaces of the inner portion 41 and the outer portion 42 do not touch the bottom when the weight is applied from the top of the midsole 4 when worn. Therefore, in the midsole 4, the first metatarsal head B1 corresponding part riding on the inner side part 41 and the fifth metatarsal head B5 corresponding part riding on the outer side part 42 can be supported by an elastic material having cushioning properties. .

  Accordingly, as shown in FIG. 3, the sole placed on the insole 4 is supported by the inner part 41, the outer part 42, and the central part 43, which have a surface shape that is deformed upward, and is laterally supported. It is possible to maintain a state of being deformed upwardly like a curve As close to the arch curve. In other words, when a shoe having an insole 4 is worn, the lateral arch shape of the wearer's foot is not greatly collapsed, and the sole of the forefoot can hold the shape close to the lateral arch. And the inner side part 41, the outer side part 42, and the center part 43 are formed with the elastic material, Furthermore, each side surface of the inner side part 41, the outer side part 42, and the center part 43 inclined with respect to the bottom face according to the horizontal arch shape. Since it has an original shape, even if there are individual differences in weight and skeleton shape of the foot, the individual differences can be absorbed, and it can be deformed into a convex shape close to a transverse arch curve. For this reason, according to the shoe which has the insole 4, it is thought that it becomes possible for any person to prevent the large collapse of the lateral arch shape of the foot. Further, even when worn by a person whose lateral arch has already collapsed, when loaded, the first metatarsal head and the fifth metatarsal head correspond to the second metatarsal head to the fourth metatarsal head. Since it sinks deeper into the sole side than the part that performs, it is considered that the progress of the collapse of the lateral arch can be reduced by distributing the weight.

  Here, in the conventional shoe having the insole 104 illustrated in FIG. 4, since the raised shape is fixed, it is not possible to cover individual differences in the sole shape, and the lateral arch shape and the raised shape of the person wearing this shoe are not covered. In some cases, the shape did not match. For this reason, when these shoes are worn, the portion corresponding to the second metatarsal head B2 to the fourth metatarsal head B4 of the sole and the raised portion of the midsole 104 collide with each other, such as a heel or fish eye with strong pain. In some cases, strong pain may occur.

  On the other hand, in the shoe according to the present embodiment, the elasticity of the inner portion 41, the outer portion 42, and the central portion 43 of the insole 4 is applied from the upper portion of the insole 4 when the weight is applied. Further, the continuous surface shape of the inner portion 41, the outer portion 42, and the central portion 43 is set so as to be deformed into a gentle convex shape. For this reason, the convex shape close | similar to the shape of the sole of each person who wears these shoes can be formed. In addition, each component of the insole 4 only needs to be able to be deformed into a convex shape when the body weight is applied during use, and it is not necessary to retain a raised shape that matches the horizontal arch shape as in the conventional case. It is not necessary to use a strong hard member for the entire insole 4. For this reason, in the shoe having the insole 4 according to the present embodiment, it is possible to reduce the occurrence of pain due to strong pain caused by heels or fish eyes caused by a strong collision between the sole and the insole. Become.

  Therefore, according to the shoe having the insole 4 according to the embodiment, when the shoe is worn, the sole of the forefoot has a shape close to the lateral arch, so that the collapse of the lateral arch shape is reduced, and the forefoot Since the sole of the foot can hold a shape close to the lateral arch, the burden on the foot due to the collapse of the lateral arch shape such as pain caused by a heel or fish eye can be reduced.

  Furthermore, conventionally, when women's shoes with high heels are worn, the heavier weight is applied to the forefoot than when shoes with low heels are worn, so the second metatarsal head of the foot as shown in FIG. From B2 to the fourth metatarsal head B4 fell, the transverse arch shape collapsed and the soles were often bent upward as shown by the curve As0. As a result of the spread of legs, the soles of the shoes collide with the insole of the shoes, and there are problems such as heels and fish eyes with strong pain centered on the bumped part, and even hallux valgus in the future. there were. In order to eliminate the occurrence of the spread leg, it was necessary to reduce the weight load ratio on the forefoot part, so that the height of the heel was conventionally limited to 3 cm. For this reason, it has been impossible to satisfy both the foot load reduction and the design with a high heel for women's shoes that always require design.

  On the other hand, in the shoe according to the present embodiment, the elasticity of the inner part 41, the outer part 42, and the central part 43 in the insole 4 is the weight load factor that changes depending on the heel height, and the weight load in each part of the sole. Because it is set based on the rate and the weight load rate when kicking out or at rest, etc., even if the heel is high, it can prevent the collapse of the lateral arch shape of the foot, depending on the eye of the shark or fish Pain can be reduced. Actually, as a shoe having the insole 4 according to the present embodiment, five pairs of women's shoes having a high heel of 5 cm or 6 cm were prototyped and tested by 15 women. As a result, almost no pain was felt during wearing. Therefore, in the shoe according to the embodiment, by using the insole 4, the heel can be much higher than 3 cm, which was the limit of the prior art, and the required design can be satisfied. For this reason, the shoes according to the embodiment sufficiently satisfy both the foot load reduction and the design with a high heel in the women's shoes for which design is always required by adopting the insole 4. It becomes possible. Furthermore, since the shoe according to the embodiment can prevent the open leg even when the heel is high by adopting the insole 4, the first metatarsal head can be held in a normal shape, It can also be expected to prevent hallux valgus in which the first metatarsal head opens inward and the base of the toe protrudes outward.

  And in the insole 4 used for the shoes concerning embodiment, both the left-right side surfaces seen from the foot | toe side surface direction incline at an acute angle with respect to the bottom face. Specifically, this will be described with reference to FIG. FIG. 5 is a side view of the outsole and the insole provided on the outsole among the constituent members of the shoe. As shown in FIG. 5, of the insole 2, 3, 4 bonded on the outsole 5 having the heel 6, the insole 4 is an angle whose left side surface is smaller than 90 ° with respect to the upper surface of the outsole 5. The right side surface has a shape inclined at θ4 which is an angle smaller than 90 °. The right side surface of the midsole 2 is tilted in accordance with the tilt angle θ3 of the left side surface of the midsole 4, and the left side surface of the midsole 3 is tilted in accordance with the tilt angle θ4 of the right side surface of the midsole 4. is doing. In this way, the surface to which each insole is bonded is inclined so that the bonding surface is wide so that the insole 2, 3 and 4 are not peeled off. Therefore, as shown by the arrows in FIG. 6, even when the wearer's weight is large at the time of kicking and the region including the ball joint portion is greatly deformed, each insole 2, The deformation of 3 and 4 is smoothly absorbed by the elasticity of the insole 2, 3 and 4.

  The shoe having the insole 4 according to the embodiment is first formed of leather, synthetic leather, etc. on the insole 2, 3 and 4 made using an elastic material, as indicated by an arrow Y1 in FIG. The shoe body portion 7 is attached, and then the outsole 5 is bonded as shown by the arrow Y2, and then the heel 6 is attached as shown by the arrow Y3. Finally, as shown in FIG. 8, the top sheet 8 is manufactured by bonding onto the insole 4. Note that the actual creation order may be created in any order other than the above.

  Moreover, as a shoe according to the present embodiment, the case where the insole 4 having the central portion 43 having a trapezoidal cross section viewed from the toe direction as illustrated in FIGS. Of course, the original shape of each part of the insole 4 is not limited to the shape shown in FIG. 2, and the continuous surface shape of the inner part 41, the outer part 42, and the central part 43 protrudes upward when a heavy weight is applied during wearing. Anything that transforms into is sufficient.

  For example, as shown in FIG. 9 (1), the central portion 143 depicting a circular arc having a larger radius than the horizontal arch and the side surface on the central portion 143 side are curved surfaces matching the side surface shape of the central portion 143. It may be an insole 140 having an inner part 141 and an outer part 142 formed on the inner side. Also in this case, like the insole 4, when the weight applied during wearing is applied, the continuous surface shapes of the inner portion 141, the outer portion 142 and the central portion 143 are substantially flat as shown in FIG. What is necessary is just to set the side shape of each part, the thickness of each part, and the elasticity of each part so that it may deform | transform upwards like the curve As1 close | similar to the horizontal arch curve of FIG. Since the midsole 140 does not have a corner from the side surface to the top surface of the central part 143, the midsole 140 can absorb individual differences in weight and sole shape more smoothly than the midsole 4, and the sole of the forefoot part can be absorbed. Furthermore, it can be brought closer to the side arch. Further, in the insole 140, since the bonding surfaces of the inner part 141, the outer part 142, and the central part 143 can be taken more than in the case of the insole 4, the effect that each part is difficult to be peeled off can be expected.

  Further, as in the original shape of the insole 240 shown in FIG. 10 (1), the angle of the side surface on the side of the central portion 143 is set to be smaller than that of the insole 4 so that a gap Sa is formed between each side surface of the central portion 143. Further, the inner portion 241 and the outer portion 242 may be made larger. In this case, the side surfaces of the inner portion 241 and the outer portion 242 viewed from the direction of the toes are 90 ° to the bottom so that they can be bonded to at least a part of each side surface of the central portion 143 so that peeling does not occur. Must have an original shape inclined at a large angle. In the shoe provided with the insole 4, as shown in FIG. 10 (2), the inner portion 241 and the outer portion 242 are crushed so as to fill the gap Sa when a heavy weight is applied during wearing. . For this reason, as shown in FIG. 10 (2), when the weight applied during wearing is applied, the continuous surface shape of the inner part 241, the outer part 242 and the central part 143 is a medium as shown by the curve As2. The convex shape is larger than the bottom 140, and the sole of the forefoot can be brought closer to the horizontal arch shape.

  Further, like the original shape of the insole 340 shown in FIG. 11 (1), the end portion of the central portion 343 viewed from the foot tip direction is extended to the bottom surfaces of the inner portion 341 and the outer portion 342, and the inner portion 341 and The outer portion 342 may be bonded to the central portion 343 not only on the side surface but also on the bottom surface. In the insole 340, since both the side surface and the bottom surface can be used as an adhesive surface, it is possible to expect an effect that each part is hardly peeled off. Also in this case, as in the case of the insole 4, the continuous surface shape of the inner portion 341, the outer portion 342, and the central portion 343 has a flat original shape as shown in FIG. As shown in the above, the side surface shape of each part, the thickness of each part, and the elasticity of each part may be set so as to be convexly deformed when the weight applied during wearing is applied.

  Moreover, it is not limited to the case where the insole is separately formed by three members having different elasticity, and the insole may be separately formed by a larger number of members. For example, as shown in an insole 440 of FIG. 12 (1), the members 441, 442, 443a to 443c having different elasticity may be made differently so as to be gradually hardened from the end to the center. In this case as well as the insole 4, the continuous surface shape of the members 441, 442, 443 a to 443 c is changed from the flat original shape shown in FIG. The shape of the side surface, the thickness of each part, and the elasticity of each part may be set so as to be deformed into a convex shape close to the transverse arch curve as indicated by the curve As4 of 12 (2). In the midsole 440, the members 443a to 443c provided in the regions substantially corresponding to the second metatarsal head, the third metatarsal head, and the fourth metatarsal head have side surfaces as viewed from the toe direction. It has an original shape inclined at an angle of less than 90 °. Further, the member 443a located in the center, the member 443b located in the side surface direction, and the member 443c are gradually formed of a soft material in order, and the member 441 corresponding to the inside of the foot and the member 442 corresponding to the outside of the foot are further provided. Made of soft material. For this reason, as shown in FIG. 12 (2), the insole 440 can form a convex shape that further matches the ideal transverse arch shape when the weight applied during wearing is applied. Conceivable.

  Moreover, you may apply the insole employ | adopted to the shoes concerning this Embodiment to the insole for adjusting the magnitude | size of shoes. When applied to the insole, similarly to the insole 4, each region corresponding to the ball joint in the insole may be formed by using materials having different elasticity.

  Specifically, as shown in FIG. 13, an insole 540 having a shape corresponding to the foot tip from the center of the foot according to the shape of the sole will be described as an example. In the insole 540, a central portion 43 is formed in a region substantially corresponding to the second metatarsal head, the third metatarsal head, and the fourth metatarsal head as in the case of the insole 4. The peripheral portion 541 which is a region other than the central portion 43 of the insole 540 is formed of an elastic material having the same characteristics as the inner portion 41 and the outer portion 42 in the insole 4. The width of the region of the peripheral portion 541 corresponding to the thumb side of the foot on the ball joint B is the same as that of the insole 4 so that the region corresponding to the first metatarsal head on the sole of the foot is on the shoe. W1. The width on the ball joint B in the region of the peripheral portion 541 corresponding to the little toe side of the foot is the same as that of the insole 4 so that the region corresponding to the fifth metatarsal head on the sole of the foot is on the shoe. Has a width W2. Further, the length L43 of the central portion 43 in the foot length direction is the case where the entire foot is displaced in the foot tip direction due to the weight of the weight, and the sole corresponding to the second metatarsal head to the fourth metatarsal head. The length is set to be longer than the length in the foot length direction corresponding to the actual second to fourth metatarsal heads so that the portion hits the insole 540.

  Next, FIG. 14 shows a cross-sectional view of the insole 540 in FIG. As shown in FIG. 14, like the insole 4, the peripheral portion 541 and the central portion 43 have a thickness D1, and the continuous surface shapes of the peripheral portion 541 and the central portion 43 have a flat original shape. . The original shape of the continuous surface shape of the peripheral portion 541 and the central portion 43 is flat. Further, as shown in FIG. 15, the insole 540 is a continuous surface of the peripheral portion 541 and the central portion 43 when the weight applied on the insole 540 is applied from the top of the insole 540 as in the case of the insole 4. The shape is a convex shape upward like a curve As close to the horizontal arch curve. For this reason, when wearing shoes with an insole 540, the sole of the forefoot has a shape close to that of the horizontal arch, so the collapse of the horizontal arch shape is reduced and the foot caused by the collapse of the horizontal arch shape is reduced. Can be reduced. Furthermore, as shown in FIG. 16, which is a side view of the insole 540 shown in FIG. 13, the side surface in the heel direction of the insole 540 has an angle larger than 90 ° with respect to the upper surface of the outsole 5 as shown in FIG. It has a shape inclined at an angle θ4. Therefore, when the insole 540 is attached to the shoe, a space Sb is formed between the insole 540 and the top surface sheet 503 of the shoe, so that the portion corresponding to the ball joint of the top sheet 503 and the insole 540 is greatly deformed when kicking out. Even in the case, the deformation of the topsheet 503 and the insole 540 is absorbed in the space Sb to prevent the end of the heel direction of the insole 540 from being lifted and the pushing up to the sole is suppressed.

  In order to use the insole 540, as shown by the arrow in FIG. 17, the insole 540 is inserted into the already completed shoe to correspond to the second metatarsal head to the fourth metatarsal head on the surface sheet 503. The insole 540 may be attached so that the central portion 43 is disposed in the portion to be performed. In this case, the periphery of the insole 540 may be cut so as to match the shape inside the shoe. The insole 540 may have a plurality of sizes corresponding to the length of the foot length. Further, an adhesive may be applied to the back surface of the insole 540 so as not to peel off from the top sheet 503. In this case, the adhesive on the back surface of the insole 540 is stored in a state of being covered with a film film or the like so that the adhesive does not solidify until the insole 540 is attached on the top sheet 503.

  Further, the elastic combination of the inner part, the outer part and the central part of the insole 4, 140, 240, 340, 440 and the elastic combination of the peripheral part 541 and the central part 43 of the insole 540 are the height of the heel. A plurality of types may be set corresponding to a person having a heavy weight, a person having a light weight, and the like.

  As described above, the insole and the shoe according to the present invention are useful for reducing the burden on the foot due to the collapse of the lateral arch shape when the shoe is worn. Suitable for use on required women's shoes.

Claims (8)

A first elastic member provided at a portion corresponding to the center of the lateral arch of the forefoot,
A second elastic member provided on both sides of the first elastic member as viewed from the direction of the toe, and softer than the first elastic member;
A shoe with an insole having
The continuous surface shape of the first elastic member and the second elastic member when viewed from the direction of the toes is flat when the original shape is substantially flat, and the weight is increased when worn. Deformed to convex,
The first elastic member is inclined such that at least the upper part of the joint surface on both sides with the second elastic member when viewed from the direction of the foot tip is widened toward the bottom surface. Shoes. In the insole,
The first elastic member is provided in a region substantially corresponding to the second metatarsal head, the third metatarsal head, and the fourth metatarsal head,
The shoe according to claim 1, wherein the second elastic member is provided in a region substantially corresponding to the first metatarsal head and a region substantially corresponding to the fifth metatarsal head. In the insole,
The second elastic member is configured such that at least the first metatarsal head corresponding part and the fifth metatarsal head corresponding part of the sole sink when the weight applied during wearing is applied, and the second elastic member Repulsive force and thickness so that the upper surface of the member does not touch the bottom,
The first elastic member sinks with a smaller sinking amount than the second elastic member when applied with a weight when worn, and has a repulsion capable of maintaining the convex surface shape. The shoe according to claim 2, wherein the shoe has strength and thickness. In the insole,
The first elastic member has an original shape in which both side surfaces viewed from the foot tip direction are inclined at an angle of less than 90 ° with respect to the bottom surface;
The second elastic member has an original shape in which a side surface viewed from the foot tip direction is inclined at an angle larger than 90 ° with respect to the bottom surface to a certain extent so that it can be bonded to at least a part of the side surface of the first elastic member. The shoe according to claim 1. A first elastic member provided at a portion corresponding to the center of the lateral arch of the forefoot,
A second elastic member provided on both sides of the first elastic member as viewed from the direction of the toe, and softer than the first elastic member;
With
The continuous surface shape of the first elastic member and the second elastic member when viewed from the direction of the toes is flat when the original shape is substantially flat, and the weight is increased when worn. Deformed to convex,
The first elastic member is inclined such that at least the upper part of the joint surface on both sides with the second elastic member when viewed from the direction of the foot tip is widened toward the bottom surface. Shoe insole. The first elastic member is provided in a region substantially corresponding to the second metatarsal head, the third metatarsal head, and the fourth metatarsal head,
The insole for a shoe according to claim 5, wherein the second elastic member is provided in a region substantially corresponding to the first metatarsal head and a region substantially corresponding to the fifth metatarsal head. The second elastic member is configured such that at least the first metatarsal head corresponding part and the fifth metatarsal head corresponding part of the sole sink when the weight applied during wearing is applied, and the second elastic member Repulsive force and thickness so that the upper surface of the member does not touch the bottom,
The first elastic member sinks with a smaller sinking amount than the second elastic member when applied with a weight when worn, and has a repulsion capable of maintaining the convex surface shape. 7. An insole for shoes according to claim 6, characterized in that it has strength and thickness. The first elastic member has an original shape in which both side surfaces viewed from the foot tip direction are inclined at an angle of less than 90 ° with respect to the bottom surface;
The second elastic member has an original shape in which a side surface viewed from the foot tip direction is inclined at an angle larger than 90 ° with respect to the bottom surface to a certain extent so that it can be bonded to at least a part of the side surface of the first elastic member. The insole for shoes according to claim 5.

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