JP5271312B2 - Insoles - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insole by which fatigue and pain are prevented from generating at a bone head part of metatarsal bones. <P>SOLUTION: In the insole 1, a support base plate 3 made of a plastic plate corresponding to an area from the heel bone 27 to the metatarsal bones 26a-26e adheres on an area of the backside of a flexible surface sheet and an end part top cover made of a sheet form elastic material adhering on an area except the area the support base plate 3 adheres. On the inner face of the end part cover, a thick wall part 15 with a partially thicker wall is formed by sticking the sheet form elastic material 6 on an area corresponding to an area from the bone head parts of the second to fifth metatarsal bones 26b-26e to the proximal phalanxes 22b-22e of the second to fifth phalanges 21b-21e and an area corresponding to the distal phalange 23a of the first phalange 21a so as to surround an area corresponding to the bone head part of the first metatarsal bone 26a, the metatarsophalangeal articulation 25a of the first toe, and the proximal phalanx 22a of the first phalange 21a. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a shoe insole used for footwear such as shoes and sandals, and more particularly to a shoe insole that supports natural walking and can prevent the occurrence of foot disorders such as hallux valgus.

  The mechanism of human walking is that the foot heel first lands (bed contact stage), then the center of gravity on the heel moves to the front foot, and from the bone head of the fifth metatarsal to the first middle foot. It moves to the bone head of the bone and becomes a stable standing position (mid stance), and then the bone head of the first metatarsal bone (屈) The ball is kicked up with the sphere as a fulcrum to leave the floor (leaving stage). By performing ideal walking along this walking mechanism, the burden on each part of the body is reduced, and the occurrence of various obstacles can be prevented.

However, the dorsiflexion of the heel part during the above-mentioned bed leaving period, especially in the case of a person who is difficult to bend the toe (hereinafter referred to as “）”) due to short gastrocnemius and soleus muscles and stiff joints. However, it is difficult to carry out forcefully and smoothly, which places an unreasonable burden on the plantar muscles in particular, and may cause problems such as hallux valgus, Achilles tendonitis, plantar aponeurosis and fish eyes and heels.
In view of this problem, the applicant has recently proposed a shoe insole that supports natural and ideal walking movements to prevent various foot injuries (see, for example, Patent Document 1).

Japanese Patent No. 4076555

  As shown in FIGS. 5 and 6, this insole is a region from the rib 27 to the proximal phalanges 22 b to 22 e of the second to fifth ribs 21 b to 21 e on the back surface of the flexible topsheet 40. A support substrate 30 made of a plastic plate is attached to correspond to the above. In the support substrate 30, the region S corresponding to the proximal phalanges 22b to 22e of the second to fifth ribs 21b to 21e from the bone heads of the second to fifth metatarsals 26b to 26e is bent with respect to the load. The other regions are formed so as to be thin, and the other regions are formed so as to be thick so that they will not bend even when a load is applied. The support substrate 30 is cut out in regions corresponding to the bone head of the first metatarsal bone 26a, the midfoot phalanx joint 25a of the heel, and the proximal phalange 22a of the first rib 21a. On the back surface of the top sheet 40, a tip top cover 50 made of a sheet-like elastic material is stuck in a region other than the region where the support substrate 30 is stuck, and the first rib 21a on the inner surface of the tip top cover 50 is attached. A sheet-like elastic material 60 is attached to a region corresponding to the distal phalanx 23a.

  When the foot is placed on the shoe insole 10 having the above-described configuration, the rear foot portion and the front foot portion are supported by the support substrate 30, but the midfoot phalanx joint 25 a of the heel sinks at the notched portion. The dorsiflexion of the heel portion, that is, the warp of the heel metatarsal joint 25a of the heel is supported, and the floor surface is kicked up by the bone head of the first metatarsal bone 26a powerfully and smoothly. In conjunction with this, the dorsiflexion of the second to fourth ribs 21b to 21d is smoothly performed from the second to fourth metatarsal joints 25b to 25d. In particular, since the dorsiflexion function of the heel portion at the time of walking is further enhanced by the presence of the thick portion 16 to which the elastic material 60 is stuck, the exercise during the bed leaving phase becomes smooth and the walking exercise can be performed more smoothly. it can. According to this insole, the movement of the foot is ideally performed from the middle stage of stance to the bed leaving period, and a natural walking motion is realized. As a result, it does not place an excessive burden on each part of the foot, especially the stress on the plantar muscles is greatly improved, and it causes problems such as hallux valgus, Achilles tendonitis, plantar aponeurosis and fish eyes and heels It is prevented from causing.

  However, in the above-mentioned shoe insole 10, the support substrate 30 made of a plastic plate is hard and not flexible, and the second to fifth ribs 21b to 21e from the bone heads of the second to fifth metatarsals 26b to 26e. Since the region S corresponding to the proximal phalanxes 22b to 22e is thin, the impact and vibration during walking are not absorbed by the support substrate 30, and the second to fifth metatarsals 26b to 26e are not absorbed. As a result of being transmitted to the bone head, there is a risk of causing fatigue and pain in the bone heads of the second to fifth metatarsals 26b to 26e.

  The present invention has been made to solve the above-described problems, and absorbs shocks and vibrations during walking so as not to be transmitted to the metatarsal bone head. An object is to provide a shoe insole that does not cause fatigue or pain.

A shoe insole according to the present invention has a support substrate made of a plastic plate corresponding to a region from the ribs to the metatarsals on the back surface of the flexible surface sheet, and a region other than the region where the support substrate is pasted. A tip top cover made of a sheet-like elastic material is attached to the region. The inner surface of the distal end top cover includes second to fifth so as to surround a region corresponding to the bone head of the first metatarsal bone, the metatarsal phalanx joint of the heel, and the proximal phalanx of the first rib. A sheet-like elastic material is attached to the region corresponding to the region from the bone head of the metatarsal bone to the proximal phalanx of the second to fifth ribs and the region corresponding to the distal phalanx of the first rib, A thick part having a thick part is formed. And the said elastic material respond | corresponds to the part affixed to the area | region corresponding to the area | region corresponding to the proximal phalanx of the 2nd-5th rib from the bone head of the 2nd-5th metatarsal, and the distal phalanx of the 1st rib. It is formed in a series of high-density microcell urethane foam so that the part pasted on the area to be continuous is continuous.

When the foot is placed on the shoe insole according to the present invention, the rear foot portion and the front foot portion are supported by the support substrate, but the middle foot phalanx joint of the heel sinks, so that the dorsiflexion of the heel portion, that is, The warp of the heel metatarsal joint is supported, and the kicking of the floor surface by the bone head of the first metatarsal bone is performed powerfully and smoothly. In conjunction with this, the dorsiflexion of the second to fourth ribs is smoothly performed from the second to fourth metatarsal joints. In addition, since an elastic material is attached to the area corresponding to the distal phalanx of the first rib on the back surface of the top sheet, the thick part increases the dorsiflexion function of the heel part during walking. The movement becomes smoother and the walking movement can be performed more smoothly. Thereby, the movement of the foot from the middle stage of stance to the bed leaving stage is ideally performed, and a natural walking motion is realized. As a result, it does not place an excessive burden on each part of the foot, especially the stress on the plantar muscles is greatly improved, and it causes problems such as hallux valgus, Achilles tendonitis, plantar aponeurosis and fish eyes and heels There is no cause. In addition, affixed to the region corresponding to the region from the bone head of the second to fifth metatarsals to the proximal phalanx of the second to fifth ribs on the back surface of the top sheet to the region corresponding to the distal phalanx of the first rib. Since the elastic material and a series of elastic materials are affixed, impact and vibration during walking are absorbed by the thick-walled portion and not transmitted to the bone heads of the second to fifth metatarsals, There is no fear of causing fatigue or pain in the bone heads of the second to fifth metatarsals. In addition, as the elastic material, a high-density microcell urethane foam that is a foam having a high density, extremely fineness, and a uniform cell structure is used, so that the compression residual strain (sag) is small, It works to absorb shocks and vibrations quickly.

  According to the present invention, it is possible to support a natural and ideal walking motion, and as a result, it is possible to prevent an excessive burden on each part of the foot, and particularly the stress on the plantar muscle is greatly improved, and the hallux valgus is improved. It can prevent the occurrence of defects such as sputum, Achilles tendinitis, plantar aponeurosis and spider fish eyes and sputum. Further, since shock and vibration during walking are absorbed so as not to be transmitted to the metatarsal bone head, there is no possibility of causing fatigue or pain in the metatarsal bone head.

It is a rear view of the shoe insole which is one Example of this invention. It is the top view which showed the external shape of the Example of FIG. 1 with the frame | skeleton of the leg | foot. It is a rear view of the state which peeled off the front-end | tip part top cover of the Example of FIG. It is sectional drawing which follows the AA line of FIG. It is a rear view of the conventional shoe insole. It is the top view which showed the external shape of the conventional shoe insole with the frame | skeleton of the leg | foot.

  FIG. 1 shows the appearance of a shoe insole 1 according to an embodiment of the present invention as seen from the back side. FIG. 2 shows the outer shape of the insole (indicated by a one-dot chain line) together with the skeleton of the foot 2. In FIG. 2, 21a to 21e are the first to fifth ribs, 22a to 22e and 23a to 23e are the proximal and distal phalanges of the first to fifth ribs 21a to 21e, and 24b to 24e are the second to fifth ribs. 21b to 21e are the middle phalanges, 25a to 25e are the first to fifth metatarsal joints, 26a to 26e are the first to fifth metatarsals, and 27 is the radius. Although the illustrated insole 1 is for the right foot, the structure for the left foot is the same, and illustration and description are omitted here.

  As shown in FIGS. 1, 3 and 4, the insole 1 of the illustrated example has a flexible support surface 3 and a flexible and elastic surface on the back surface of a flexible and flexible surface sheet 4. A certain tip top cover 5 is attached. Although the surface sheet 4 of this embodiment is formed in a shape along the outer shape of the inner bottom surface of the shoe with artificial leather, the material of the surface sheet 4 is not limited as long as the surface sheet 4 is flexible and receives a load. .

  The support substrate 3 is formed in a size and shape corresponding to a region from the ribs 27 of the foot 2 to the first to fifth metatarsals 26a to 26e by a hard plastic plate. The region along the front edge of the support substrate 3 is formed with a slightly thin thickness to facilitate bending, and the other regions are formed with a thick thickness so that they are not easily bent even when subjected to a load.

  A circular through hole 13 is formed at the collar portion of the support substrate 3, and a disk-shaped collar support plate 14 is fitted into the through hole 13 and joined to the surface sheet 4. The heel support plate 14 is for supporting the heel of the foot, and an elastic material made of the same material as the tip top cover 5 described later is used as the heel support plate 14. Since the heel support plate 14 is compressed and deformed in the through hole 13 along the shape of the heel by the load of the foot, the heel is stably supported in a state of being fitted in the through hole 13.

  The tip top cover 5 is made of a sheet-like elastic material, and is a region other than the region where the support substrate 3 on the back surface of the topsheet 4 is pasted, that is, the first to fifth metatarsals 26a to 26e. It is attached to the area from to the toe. In this example, a high-density microcell urethane foam (trade name “Polon”) is used as the elastic material. However, the present invention is not limited to this, and a foam made of a polyurethane resin such as a low-resilience elastic urethane foam is used. It can also be used.

  On the back surface of the distal end top cover 5, the first metatarsal 26a is surrounded by a bone head, a heel metatarsal phalanx joint 25a, and a region corresponding to the proximal phalange 22a of the first rib 21a. The region corresponding to the region from the bone head of the second to fifth metatarsals 26b to 26e to the proximal phalanges 22b to 22e of the second to fifth ribs 21b to 21e, and the distal phalanx 23a of the first rib 21a A series of sheet-like elastic members 6 are attached to the region to form a thick portion 15 that is partially thick. When a foot is placed on the insole 1, the middle foot phalanx joint 25 a of the heel sinks in a region surrounded by the thick portion 15.

  When a foot is placed on the shoe insole 1 having the above-described configuration, the rear foot portion and the front foot portion are supported by the support substrate 3, but the midfoot phalanx joint 25 a sinks, so that the back of the heel portion The bend, that is, the warp of the middle foot phalanx joint 25a of the heel is supported, and the floor of the first metatarsal bone 26a is kicked up strongly and smoothly by the bone head. In conjunction with this, the dorsiflexion of the second to fourth ribs 21b to 21d is smoothly performed from the second to fourth metatarsal joints 25b to 25d. In addition, since the elastic material 6 is pasted in the region corresponding to the distal phalange 23a of the first rib 21a on the back surface of the top sheet 4, the thick portion 15 further increases the dorsiflexion function of the rib portion during walking. Increased, the exercise at the time of getting out of bed becomes smooth, and the walking exercise can be performed more smoothly. Thereby, the movement of the foot from the middle stage of stance to the bed leaving stage is ideally performed, and a natural walking motion is realized. As a result, it does not place an excessive burden on each part of the foot, especially the stress on the plantar muscles is greatly improved, and it causes problems such as hallux valgus, Achilles tendonitis, plantar aponeurosis and fish eyes and heels There is no cause.

In addition, the elastic material 6 is formed in a region corresponding to a region from the bone heads of the second to fifth metatarsals 26b to 26e on the back surface of the top sheet 4 to the proximal phalanges 22b to 22e of the second to fifth ribs 21b to 21e. Since the thick part 15 absorbs shock and vibration during walking, the second to fifth metatarsals are not transmitted to the bone heads of the second to fifth metatarsals 26b to 26e. There is no fear of causing fatigue or pain in the bone heads of the bones 26b to 26e.
In this embodiment, since the high-density microcell urethane foam (trade name “Polon”) is used as the sheet-like elastic material 6, the residual compressive strain (sag) is small, and shock and vibration are quickly absorbed. There is an effect.

DESCRIPTION OF SYMBOLS 1 Shoe insole 3 Support substrate 4 Top sheet 5 Front-end | tip top cover 6 Elastic material 15 Thick part 2 Foot 25a Saddle metatarsophalangeal joint 21a-21e 1st-5th rib 22a-22e 1st-5th Proximal phalanx 23a-23e first to fifth distal phalanges 25a to 25e first to fifth metatarsal joints 26a to 26e first to fifth metatarsals 27 fibula

Claims (1)

A support substrate made of a plastic plate corresponding to the region from the ribs to the metatarsals on the back surface of the flexible top sheet, and a sheet-like elastic material in a region other than the region where the support substrate is affixed The distal end top cover is attached to the inner surface of the distal end top cover, and corresponds to the bone head of the first metatarsal bone, the metatarsal phalanx joint of the heel, and the proximal phalanx of the first rib. A region corresponding to a region from the bone head of the second to fifth metatarsals to a proximal phalanx of the second to fifth ribs, and a region corresponding to the distal phalanx of the first rib so as to surround the region; and affixed a sheet-like elastic material, partially and the thickness thicker the thick portion is formed, the elastic material, the second to fifth toe bone from the second to fifth metatarsal bones head The portion pasted in the region corresponding to the region reaching the proximal phalanx and the portion pasted in the region corresponding to the distal phalanx of the first rib are continuous Shoe insole comprising formed in series by the Uni-density microcell urethane foam.

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