JP5319179B2 - Insole and insole parts - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insole stabilizing the respective parts of a foot skeleton of a wearer in a well-balanced manner, having a favorable wearing feel and being useful for the healthcare-therapy of the foot skeleton. <P>SOLUTION: This insole is provided with (1) a central protrusion section coming into contact with metatarsal arch portions of second-fourth toes, (2) an lateral longitudinal arch protrusion section extending from the central protrusion section in the lateral longitudinal arch direction and protruding to cross the lower part of the lateral longitudinal arch, and (3) first-second intermetatarsal protrusion sections extending from the medial edge of the central protrusion section to the proximity to the head of the metatarsal along a space between the first metatarsal and the second metatarsal, in the upper face of an insole body consisting of a flexible material. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an insole and an insole component. More specifically, the present invention is an insole pad for footwear, which has a specific uneven structure that stabilizes each part of the wearer's foot skeleton in a well-balanced manner, has a good feeling of use and is intended for health and treatment purposes. The present invention also relates to an insole component including a useful insole and parts for forming a raised portion when the insole is configured in a modular manner (component assembly type).

  An insole (insole pad) used for footwear is made of a foamed or non-foamed flexible material such as rubber or a relatively soft plastic, and has a flat shape corresponding to the sole as a whole. Some have aimed at deodorizing effects and the like due to aeration inside the footwear, but those focusing on ensuring a good balance of foot skeleton and muscle action have also been proposed.

  For example, in the following Patent Document 1, an elastic part made of an elastic material having high hardness is provided on the lower surface of a flexible base material part, and this elastic part has a specific peripheral contour in relation to the foot skeleton of the wearing book. Disclosed is a floating finger prevention insole pad. As a part of the peripheral contour, in a region corresponding to the second heel-third heel of the foot skeleton, a sharp contour having a peripheral edge at a position beyond the joint between the metatarsal phalanges is provided.

  Next, in Patent Document 2 below, a gently downward projecting horizontal arch pad portion and an inner vertical arch pad corresponding to portions corresponding to the lateral arch, the inner vertical arch, and the outer vertical arch of the sole, respectively. A “shoe insole having an arch pad” is disclosed, comprising an elastic or viscoelastic pad integrally having at least one of an outer portion and an outer longitudinal arch pad portion. The shoe insole is effective at the same time for maintaining the function of the foot during running, or for maintaining the vicinity of the buttocks of the foot, which is useful for preventing obstacles.

Further, Patent Document 3 below discloses a modular molded insole having a predetermined removable correction element for an insole made of a resilient material.
JP 2007-89833 A JP-A-11-226042 However, each part of the wearer's foot skeleton is stabilized in a well-balanced manner, and thus the balance of the muscular action of the wearer's entire body is kept good, and the feeling of use is good, as well as health and treatment. For the purpose of providing an insole useful for the purpose, the conventional insole is not always satisfactory.

  Therefore, the present invention has as a technical problem to be solved to provide an insole that can achieve the above-described object and an insole component that includes parts for forming a raised portion for constituting the insole.

(First invention)
The configuration of the first invention of the present application for solving the above-mentioned problems is as follows. (1) to (3) on the upper surface of the insole body made of a flexible material having a plate shape as a whole and having a planar shape corresponding to the sole. It is an insole provided with a metatarsal protuberance that integrally forms the protuberance portion of the metatarsal bone.
(1) A central raised portion raised so as to contact the metatarsal arch portion of the second to fourth toes.
(2) An outer vertical arch ridge that extends continuously from the central ridge in the direction of the outer vertical arch, and protrudes across the lower portion of the outer vertical arch.
(3) First to second extending continuously from the inner front end of the central raised portion to the vicinity of the head of the metatarsal bone along the first metatarsal bone and the second metatarsal bone. Intermetatarsal protuberance.

(Second invention)
The structure of the second invention of the present application for solving the above-described problem is that the insole according to the first invention is further raised so that the lower space portion at the distal end side of the head of the metatarsal bone in each toe is buried. An insole with a protuberance.

(Third invention)
The configuration of the third invention of the present application for solving the above problem is that the metatarsal protuberance and the finger are located outside the first to second intermetatarial protuberances of the metatarsal protuberance in the insole according to the second invention. A metatarsal head pocket, which is a recess surrounded by these ridges, is formed between the outer part of the pillow ridges, and inside the first to second intermetatarsal ridges of the metatarsal ridges, An insole in which a seed bone pocket is formed between the bone protuberance and the inner part of the finger pillow protuberance, a recess surrounded by these protuberances.

(Fourth invention)
In order to solve the above problem, the fourth invention of the present application is such that the insole according to any one of the first to third inventions further contacts and supports the cubic bone located at the rear part of the outer longitudinal arch. An insole with a raised outer longitudinal arch ridge.

(Fifth invention)
The configuration of the fifth invention of the present application for solving the above-mentioned problem is a recess surrounded by the bulge between the metatarsal ridge and the outer longitudinal arch filling ridge in the insole according to the fourth invention. 5 Insole with a metatarsal rough pocket formed.

(Sixth invention)
The configuration of the sixth invention of the present application for solving the above problem is an insole in which the insole according to any one of the first to fifth inventions corresponds to any of the following (4) to (7). is there.
(4) The entire insole is integrally formed with a single constituent material.
(5) The insole body has a laminated structure in which the same or different constituent materials are joined in layers, and the metatarsal protuberance according to claim 1 is formed on the upper surface of the uppermost constituent material, and the finger according to claim 2 One or more portions of the pillow protuberance and the outer longitudinal arch filled protuberance according to claim 4 are integrally formed.
(6) The insole body made of a single constituent material or having a laminated structure in which the same or different constituent materials are joined in layers is formed separately from the insole body. A bulge part having a shape corresponding to one or more of the metatarsal bulge, the finger pillow bulge according to claim 2 and the outer longitudinal arch bulge bulge according to claim 4 is attached to and removed from the corresponding position on the upper surface of the insole body. It is a modular insole that can be joined in such a way that it can be or cannot be detached.
(7) In the above (6), the raised part is made of a material different from the constituent material of the insole body.

(Seventh invention)
The configuration of the seventh invention of the present application for solving the above-mentioned problems is the one described in (5) to (7) of the sixth invention for configuring the insole according to any one of the first to fifth inventions. This is an insole part composed of the above raised parts.

  The metatarsal ridge according to the first aspect of the present invention is formed by integrally forming a central bulge, an outer longitudinal arch bulge, and a first-second metatarsal bulge. Among these, the central raised portion that is raised so as to abut on the metatarsal arch portion of the second to fourth heels is a concave portion of the sole formed by the inner longitudinal arch, the outer longitudinal arch, and the lateral arch of the foot skeleton. The central portion is supported, and then the lateral longitudinal arch ridge supports the lateral longitudinal arch of the foot skeleton, and the first to second intermetatarsal ridges support the medial longitudinal arch portion of the foot skeleton. Therefore, the arch structure of the wearer's foot skeleton is supported in a well-balanced manner as a whole, and as a result, the balance of the muscle action of the wearer's entire body is also well maintained, so that the foot tension is effective and the wearing feeling is good. In addition, it is useful for health and therapeutic purposes such as the effects of skeletal correction.

  Since the inner longitudinal arch portion is subjected to a very large load, it is not sufficient to have a ridge that simply crosses the lower part of the arch, such as the outer longitudinal arch ridge, and the first metatarsal and the second metatarsal A first-second metatarsal protuberance that extends continuously to the vicinity of the head of the metatarsal bone is required. In this regard, as in Patent Document 1 described above, the raised portion provided between the second ridge and the third ridge has an insufficient support effect on the inner vertical arch portion. This is confirmed by a balance test which will be described later in the column of the embodiment.

  The second invention further includes a finger pillow raised so as to fill the lower space of the distal side of the metatarsal bone head of each toe. Each of the first to fifth toes has a skeletal structure with the tip bent downward, and there is a space underneath them, but the conventional insole raised to fill this part No finger pillows have been proposed. When the insole has such a finger pillow uplift, the foot struts are remarkably effective, and a feeling of fullness is given to the lower space portion of the toes, and the wearing feeling is also good.

  As defined in the third invention, in the insole comprising the metatarsal bulge according to the first invention and the finger pillow bulge according to the second invention, the following pockets (a) and (b) are formed as a result. Is done.

  (A) Metatarsal head pocket: The metatarsal bulge, more specifically, the central bulge and the lateral longitudinal of the metatarsal bulge outside the first-second metatarsal bulge of the metatarsal bulge. A metatarsal head pocket is formed between the arch ridge and the outer portion of the finger pillow ridge, which is a recess surrounded by these ridges. The effect of the first invention is further enhanced by the metatarsal head pocket.

  (B) Seed bone pocket: metatarsal protuberance, more specifically, metatarsal protuberance, and first and second metatarsal protuberances inside the first to second metatarsal protuberances of the metatarsal protuberance A seed bone pocket is formed between the interosseous protuberance and the inner part of the finger pillow protuberance, which is a recess surrounded by these protuberances. This seed bone pocket has a function to support the so-called mother's bulb of the foot skeleton (seed bone under the bone head of the first metatarsal bone) without difficulty.

  Thus, an insole in which a pair of raised portions are formed in a specific positional relationship and, as a result, a pocket having a specific function at an intermediate position between them is not seen in the related art.

  The fourth aspect of the present invention further includes an outer vertical arch filling bulge raised to abut against and support the cubic bone located at the rear of the outer vertical arch. In addition to the outer vertical arch ridges described in the first aspect of the invention, the insole is provided with the outer vertical arch ridges of the fourth aspect of the invention, so that the outer vertical arch is supported in a well-balanced manner.

  As defined in the fifth invention, in the insole including the metatarsal ridge according to the first invention and the outer longitudinal arch filled ridge according to the fourth invention, the following pockets (c) are formed as a result. .

  (C) Fifth metatarsal rough pocket: between these metatarsal ridges, more specifically between the central and lateral longitudinal arch ridges of the metatarsal ridge, and the lateral longitudinal arch ridge A fifth metatarsal rough surface pocket, which is a recess surrounded by the protuberance, is formed. The rough surface pocket of the fifth metatarsal bone has a function of further enhancing the effect of the first invention by supporting the rough surface side of the fifth metatarsal bone.

  Next, modes for carrying out the present invention will be described including the best mode.

[Main components of the insole]
The insole according to the present invention is made of a flexible material having a plate shape as a whole, and has at least a central ridge, an outer longitudinal arch ridge, and a specific position on the upper surface of the insole body having a planar shape corresponding to the sole. A metatarsal bulge composed of a bulge between the first and second metatarsals is provided. These central protuberances, lateral longitudinal arch protuberances and first-second metatarsal protuberances are continuous protuberances.

  The central raised portion is raised so as to abut on the concave portion of the metatarsal arch in the center of the sole formed by the inner longitudinal arch, the outer longitudinal arch, and the lateral arch of the foot skeleton.

  The outer vertical arch bulge extends continuously from the central bulge in the direction of the outer vertical arch, and protrudes across the lower portion of the outer vertical arch.

  The first to second metatarsal ridges are continuously near the head of these metatarsal bones along the space between the first and second metatarsals, continuously from the inner tip of the central bulge. It is a ridge extending up to.

  More preferably, the insole of the present invention includes a finger pillow raised so as to fill a lower space portion on the distal end side from the head portion of the metatarsal bone in each of the first to fifth toes.

  In the insole having such a finger pillow protuberance, the following recess (pocket) is formed between the metatarsal protuberance. That is, the outer portion of the first to second intermetatarsal ridges of the metatarsal ridge is a recess surrounded by these ridges between the metatarsal ridge and the outer portion of the finger pillow ridge. A metatarsal head pocket is formed. Moreover, in the inner part of the 1st-2nd metatarsal bulge part of the metatarsal bulge, it is a recessed part surrounded by these bulges between the metatarsal bulge and the inner part of the finger pillow bulge. A seed bone pocket is formed.

  More preferably, the insole of the present invention includes an outer longitudinal arch filling ridge raised to abut and support the cubic bone located at the rear of the outer longitudinal arch.

  In such an insole having an outer longitudinal arch filling ridge, a fifth metatarsal rough surface pocket which is a recess surrounded by these bulging ridges and the metatarsal ridge is provided. It is formed.

  The insole body is not limited, but is preferably a flat plate as a whole.

  The constituent material of the insole body is not limited as long as it is a flexible material, but is preferably made of rubber, polyurethane, EVA, polyethylene, soft vinyl chloride, or the like. Moreover, it is preferable to consist of a foaming material with high buffer property. The bubble rate (volume ratio occupied by bubbles) in the foam material is not limited. The thickness of the insole body may be appropriately determined as necessary, but is preferably in the range of about 1 mm to 7 mm, for example.

  As defined in the sixth invention described above, the insole of the present invention may be integrally molded with a single constituent material as a whole. Further, the insole body may have a laminated structure, and various ridges peculiar to the present invention may be integrally formed on the upper surface of the uppermost constituent material. Furthermore, the insole of the present invention is connected to an insole body made of a single constituent material or having a laminated structure so that a bulge-forming part formed separately from the insole body can be attached or detached. It can also be configured as a modular insole.

  In the above, when the insole body has a laminated structure, each layer can be made of the same or different flexible material. The “different flexible materials” in this case includes cases where the types of flexible materials are different, the hardness of the flexible materials is different, the bubble ratios of the flexible materials are different, and the like.

  Further, in the above-described modular insole, the parts for forming the bulge can be formed using a material different from the constituent material of the insole body. The “different material” in this case may be a flexible material having a different material type, hardness, or bubble ratio as compared with the constituent material of the insole body, but is a hard material with relatively poor flexibility. It may be a material (for example, hard plastic).

  As a form in which the bulge forming parts are detachably joined to the insole body, for example, a magic tape (registered trademark), which is a loop-hook adhesive tape, is attached to the upper surface of the insole body and the lower surface of the bulge formation part. Examples include a form in which a button-button hole type detachable fitting structure as disclosed in Patent Document 3 is provided on the upper surface of the insole body and the lower surface of the bulge forming part. .

  Examples of the form in which the bulge-forming parts are joined to the insole body so as not to be detachable include a form in which both are joined by an adhesive, a form in which both are joined by thermal welding, and the like.

[Other raised structure of insole]
In the insole according to the present invention, in addition to the above-described various bulges, for example, a heel cup bulge that bulges around the heel of the foot at the periphery of the rear end of the upper surface of the insole, and the heel cup bulge is the insole. An inner arch support ridge can be provided that extends along the inner periphery of the arch to a substantially central portion below the inner arch.

[Insole processing method]
In the processing of the insole of the present invention, various known processing methods such as cutting, molding, and the like can be arbitrarily selected and used. For example, in the cutting process, a custom-made processing method based on a so-called CAD / CAM method, in which an insole is designed and processed using a computer after acquiring measurement data of a wearer's individual foot skeleton and the like, is particularly used. preferable.

  Examples of the present invention will be described below. The technical scope of the present invention is not limited by the following examples.

〔insole〕
The insole body 1 shown in a plan view in FIG. 1 is for the left foot, but the insole body for the right foot is formed symmetrically. The insole body 1 is made of a foamable flexible resin material, and its length in the vertical direction (vertical direction in the figure) is approximately 25 cm, and the maximum width in the horizontal direction is approximately 9 cm, corresponding to the shape of the sole. Having a planar shape. The insole body 1 may be a single layer made of a single constituent material, but may have a laminated structure in which the same or different constituent materials are joined in layers.

  The insole body 1 has a thickness of about 3 mm as a whole, except for the formation of various ridges described later. As can be seen from FIGS. 3 (a) to 3 (c), which are longitudinal sectional views of FIG. 1, the insole body 1 has a flat plate shape as a whole.

  As shown in FIGS. 1 and 3 (a) to 3 (d), various bumps are provided on the upper surface of the insole body 1. Since the positions where the ridges are formed are determined in relation to the foot skeleton, the foot skeleton will be described in advance with reference to FIG. 2 in describing these ridges. FIG. 2 shows a plan view of the foot skeleton of the left foot corresponding to FIG.

  Among the bones constituting the foot skeleton, the first metatarsal bone 51, the second metatarsal bone 52, and the third middle bone, which are the metatarsals of the first to fifth ribs, are considered to be closely related to the present invention. Examples include the footbone 53, the fourth metatarsal 54, and the fifth metatarsal 55. The metatarsals of the first to fifth heels all have an arch shape, and constitute a metatarsal arch portion that is a depression of the sole as a whole. The inner part of the metatarsal arch is the inner longitudinal arch 56, the outer part of the metatarsal arch is the outer longitudinal arch 57, and the distal side (upper end in the figure) of the metatarsal arch is the side arch. 58.

  Although not shown in FIG. 2, there is a seed bone (a mother's bulb) below the bone head (tip) of the first metatarsal bone. Next, bones such as the proximal phalanx 59 and the middle phalanx 60 constituting the toes are continued to the distal side of each metatarsal bone of the first to fifth heels in a skeletal structure in which the bones are bent downward. Therefore, a space part exists below them. Further, a protruding portion called a fifth metatarsal rough surface 61 is provided at the rear end portion of the fifth metatarsal 55. Further, a cubic bone 62 at the rear end portion of the outer longitudinal arch 57 is adjacent to the rear portion of the protruding fifth metatarsal rough surface 61.

[Insole ridges]
On the upper surface of the insole body 1, the following ridges 1) to 5) are formed corresponding to the foot skeleton shown in FIG. These bulges may be formed integrally by processing the insole body 1, but the bulge parts of a corresponding shape formed separately from the insole body 1 may correspond to the upper surface of the insole body 1. It may be joined to the position so as to be removable or not removable.

  1) A gentle hilly metatarsal ridge 2 with a ridge height of about 2-4 mm. The metatarsal protuberance 2 includes a central protuberance 2a, an outer longitudinal arch protuberance 2b, and a first-second metatarsal protuberance 2c. The central raised portion 2a is a portion raised so as to abut against the entire arch portion of the second metatarsal 52 to the fourth metatarsal 54, which are the metatarsals of the second to fourth heels. This corresponds to the approximate center of the metatarsal arch. The outer vertical arch ridge 2 b is continuously extended from the central ridge 2 a toward the outer vertical arch 57, and protrudes so as to cross the lower portion of the outer vertical arch 57. The first to second metatarsal protuberances 2c extend from the medial tip of the central protuberance 2a along the first metatarsal bone 51 and the second metatarsal bone 52, and the heads of these metatarsals. It extends continuously to the vicinity of the portion (tip portion).

  2) The finger pillow bulge 3 whose cross section protrudes in a mountain shape and whose bulge height is about 2 to 4 mm. The finger pillow protuberance 3 fills a lower space portion formed by bending the bones such as the proximal phalanx 59 and the middle phalanx 60 on the distal side from the metatarsal bone head in each toe. It is formed in a bent planar shape.

  3) A heel cup bulge 4 having a bulge height of about 5 to 10 mm, which bulges around the periphery of the heel of the foot at the periphery of the rear end of the upper surface of the insole body 1. This heel cup protuberance 4 supports the entire buttocks of the foot.

  4) The inner arch support ridge 5 having a ridge height of about 5 to 10 mm, wherein the heel cup ridge 4 extends along the inner peripheral edge of the insole body 1 to a substantially central portion below the inner vertical arch 56. The inner arch support ridge 5 reinforces the support for the inner arch.

  5) Outer vertical arch-filled bulge extended in a pier shape with a ridge height of about 2 to 4 mm from the vicinity of the tip of the outer peripheral edge of the heel cup ridge 4 and raised so as to abut against and support the cubic bone 62 6.

[Insole pocket]
As a result of the predetermined formation of the above-mentioned various ridges on the upper surface of the insole body 1, the following pocket portions 6) to 8) are formed between the ridges.

  6) Outside the first to second intermetatarsal protuberance 2c of the metatarsal protuberance 2, the metatarsal protuberance 2 and the outer portion of the finger pillow protuberance 3 are surrounded by these protuberances. A metatarsal head pocket 7 which is a recess is formed. The metatarsal head pocket 7 has a function of stably receiving the bone heads (tip portions) of the second metatarsal bone 52 to the fifth metatarsal 55 which are the metatarsals of the second to fifth heels.

  7) Inside the first to second metatarsal protuberance 2c of the metatarsal protuberance 2, the metatarsal protuberance 2 and the inner part of the finger pillow protuberance 3 are surrounded by these protuberances. A seed bone pocket 8 which is a recess is formed. The seed bone pocket 8 has a function of stably receiving a so-called mother's bulb (a seed bone under the bone head of the first metatarsal bone).

  8) Between the metatarsal ridge 2 and the outer longitudinal arch filling ridge 6 is formed a fifth metatarsal rough surface pocket 9 which is a recess surrounded by these ridges. The fifth metatarsal rough surface pocket 9 has a function of stably receiving the fifth metatarsal rough surface 61 which is a protruding portion of the rear end portion of the fifth metatarsal 55.

[Insole evaluation test]
The insole of the present example having the above configuration was subjected to a balance test as shown in FIGS. 4A and 4B together with a comparative example insole manufactured as described below.

  The balance test is a state in which the subject A has a special load even when the loader B gives a large load to the subject A who stands upright in a natural state with both feet open to the shoulder width with the insole attached to the sole. This is a test to see if you can withstand the load without difficulty and maintain a balance of standing. In this balance test, the subject A was a healthy boy having a height of about 172 cm and a weight of about 63 kg, and the loader B was a healthy boy having a height of about 170 cm and a weight of about 70 kg.

  In the balance test shown in FIG. 4 (a), subject A who is standing as shown in the figure hangs his arms and puts both hands in front, and loader B loads the entire weight of the combined portion of both hands. The load was given with the feeling of doing. Next, in the balance test shown in FIG. 4 (b), the subject A, who is standing in the figure, turns both arms backwards and combines both hands, and the loader B places the entire weight on the combined portion of both hands. The load was given in the sense of loading. Although the load amount in these tests is not measured mechanically, it is estimated that in any test, it reaches about 50 kg.

  First, as Comparative Example 1, an insole made only of an insole main body 1 having a flat upper surface, which does not have a raised portion like the insole of the present embodiment, was tested by subject A wearing it. 4 (a) and 4 (b), the subject A could not withstand the load and maintain the standing posture at all unless the subject A moved the center of gravity largely in the opposite direction to the load. .

  Next, as Comparative Example 2, it is a raised portion similar to the raised portion 2c between the first and second metatarsals 2c in the insole of the present embodiment, but between the second and third metatarsals. An insole in which only the second to third metatarsal ridges differing in the points provided near the head of the metatarsal bone were formed on the upper surface of the insole body 1, and this was tested by the subject A wearing it. As a result, almost the same results as in Comparative Example 1 were obtained.

  As a comparative example 3, an insole in which only the first to second metatarsal protuberances 2c of the insole of this example were formed on the upper surface of the insole body 1 was prototyped, and this was tested by the subject A wearing it. However, unlike Comparative Examples 1 and 2, Subject A was able to withstand a certain amount of load in both tests. However, when the loader B applied the load in the sense of loading the entire weight, the test subject A could not stand and stand up with the load.

  As Example 1, an insole in which a metatarsal protuberance 2 including a central protuberance 2a, an outer longitudinal arch protuberance 2b, and a first-second intermetatarial protuberance 2c is completely formed on the upper surface of the insole body 1 is used. Prototypes were tested and tested by subject A. In either test, subject A would stand up to the load and stand up naturally without any special action to resist the load, such as shifting the center of gravity. Could be maintained. However, when the loader B suddenly loaded the whole weight, the natural standing of the subject A collapsed.

  As Example 2, the insole as shown in FIG. 1 was prototyped and tested by subject A wearing it. In any test, including the case where loader B suddenly applied the entire weight. However, Subject A was able to withstand the load and maintain a natural standing.

  From the results of the above Examples and Comparative Examples, it can be seen that the insole of the present invention stabilizes each part of the wearer's foot skeleton in a well-balanced manner, and thus maintains a good balance of the muscular action of the wearer's entire body. Therefore, it can be said that not only the feeling of use is good, but also useful for the health and treatment of the foot skeleton.

  The insole of the present invention stabilizes each part of the wearer's foot skeleton in a well-balanced manner, has a good feeling of use, and is useful for health and treatment purposes of the foot skeleton.

It is a top view of the insole which concerns on an Example.

It is a top view of the foot skeleton of a left foot.

3A is an end view of the Y1-Y1 line cross section of FIG. 1, FIG. 3B is an end view of the Y2-Y2 line cross section of FIG. 1, and FIG. 3C is Y3 of FIG. FIG. 3D is an end view of the cross section taken along the line -Y3, and FIG. 3D is an end view of the cross section taken along the line XX of FIG.

It is a figure which shows the implementation point of a balance test.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Insole main body 2 Metatarsal ridge 2a Central ridge 2b Outer vertical arch ridge 2c 1st-2nd metatarsal ridge 3 Finger pillow ridge 4 Heel cup ridge 5 Inner arch support ridge 6 Outer vertical arch ridge 7 Metatarsal head pocket 8 Seed bone pocket 9 Fifth metatarsal rough surface pocket

Claims (6)

A metatarsal protuberance is formed by integrally forming the protuberances (1) to (3) below on the upper surface of the insole body made of a flexible material that is plate-like as a whole and having a planar shape corresponding to the sole. The insole further comprises a finger pillow raised so as to fill a lower space portion on the distal end side from the metatarsal bone head in each toe .
(1) A central raised portion raised so as to contact the metatarsal arch portion of the second to fourth toes.
(2) An outer vertical arch ridge that extends continuously from the central ridge in the direction of the outer vertical arch, and protrudes across the lower portion of the outer vertical arch.
(3) First to second extending continuously from the inner front end of the central raised portion to the vicinity of the head of the metatarsal bone along the first metatarsal bone and the second metatarsal bone. Intermetatarsal protuberance. On the outside of the first to second metatarsal ridges of the metatarsal protuberance in the insole, a middle portion is a recess surrounded by these ridges between the metatarsal protuberance and the outer part of the finger pillow protuberance Toe head pockets were formed and surrounded by these ridges between the metatarsal ridge and the inner part of the finger pillow ridge inside the first-second intermetatarsal ridge of the metatarsal ridge The insole according to claim 1 , wherein a seed bone pocket which is a concave portion is formed. The insole according to claim 1 or 2 , wherein the insole further comprises an outer vertical arch filling ridge raised to abut against and support a cubic bone located at the rear of the outer vertical arch. To claim 3, characterized in that the fifth metatarsal rough pocket is a recess surrounded by these ridges are formed between the metatarsals raised outer longitudinal arch appropriated raised in the insole Insole as described. Insole as claimed in any one of claims 1 to 4, wherein the insole is to any of the following (4) to (7).
(4) The entire insole is integrally formed with a single constituent material.
(5) The insole body has a laminated structure in which the same or different constituent materials are joined in layers, and the metatarsal protuberance according to claim 1 is formed on the upper surface of the uppermost constituent material, and the finger according to claim 2 One or more portions of the pillow protuberance and the outer longitudinal arch filled protuberance according to claim 4 are integrally formed.
(6) The insole body made of a single constituent material or having a laminated structure in which the same or different constituent materials are joined in layers is formed separately from the insole body. metatarsal ridge, desorbing the raised parts for the shape corresponding to one or more of the outer longitudinal arch appropriated raised described finger pillow elevations and claim 3 to claim 1, in the appropriate position on the upper surface of the insole body It is a modular insole that can be joined in such a way that it can be or cannot be detached.
(7) In the above (6), the raised part is made of a material different from the constituent material of the insole body. Corresponding to metatarsal bulge, finger pillow bulge, and lateral longitudinal arch bulge bulge according to (6) to (7) of claim 5 for constituting the insole according to any one of claims 1 to 4. Insole parts characterized by consisting of raised parts with a shape to form .