JP2004254864A - Insole set for infant shoes and insole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insole set for the infant shoes and insoles which enable the promotion of the formation of the plantar arches in particular by considering the changes in the walking styles of the babies to the period of acquiring the independent walking from the period of starting it. <P>SOLUTION: The insole set for the infant shoes has the first insoles 10 and the second insoles 20. Each of the first insoles 10 has a partition 11 erected and extended between the first and second toes of the foot of the infant and the remaining area thereof is made flat. In addition to the partition 21, each of the second insoles 20 has a rise part 22 for the plantar arch to match the plantar arch of the foot of the infant. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an insole for infant shoes, and more particularly to an insole for promoting the formation of an arch of an infant.
[0002]
[Prior art]
Infants' shoes are used from the beginning of an infant's walking, and are used for protecting the feet.
[0003]
It is said that foot growth in infancy continues from around one year old when walking begins to about six or seven years of age. In particular, it is important to grow the foot in a healthy state in a relatively young infant.
[0004]
A typical manifestation of such healthy foot growth is arch formation. The arch plays an important role in exerting a shock absorbing effect during walking and protecting the brain through the spine. In order to form the arch, it is important to walk while exercising each of the toes so that the foot can grasp the ground. Such a walking state is more easily realized when the infant walks barefoot.
[0005]
On the other hand, nonetheless, shoes are needed for foot protection. When infants wear shoes, the movement of each toe of the toes is impeded, making it difficult to move the feet to grasp the ground, and as a result, may hinder healthy growth of the feet.
[0006]
The same applicant as the present application disclosed in Japanese Patent Application Laid-Open No. 2001-157601 an infant insole improved to promote healthy growth of infant's feet.
[0007]
[Patent Document 1]
JP 2001-157601 A (FIGS. 2 and 3)
[0008]
[Problems to be solved by the invention]
The present invention seeks to further improve the insole for infant shoes disclosed in JP-A-2001-157601.
[0009]
That is, an object of the present invention is to consider a change in the walking form from the start of independent walking of the infant to the time of learning the independent walking, and particularly a set of insoles for infants that can effectively promote the formation of the arch. The insole is to provide.
[0010]
[Means for Solving the Problems]
The insole set for infant shoes according to the present invention includes a first insole and a second insole. The first insole has an inter-finger ridge sandwiched between the first and second toes of the infant's foot, and the remaining area has a flat shape without the ridge. The second insole has, in addition to the above-mentioned inter-finger ridge, a ridge for an arch that hits the arch of the foot of the baby.
[0011]
In one embodiment, the inter-finger ridge includes a partition wall that rises and extends between the first and second fingers.
[0012]
In another embodiment, the inter-finger ridge includes a small vertical ridge extending between the first and second fingers, and a bottom of the first finger and a bottom of the second finger. And an inverted T-shaped ridge consisting of a lateral ridge extending to. The height of the inverted T-shaped ridge is preferably 5 mm or less. Further, the lateral ridge is preferably such that one end thereof does not exceed the third finger.
[0013]
The insole according to the present invention includes an inter-finger ridge sandwiched between the first and second toes of an infant's foot and an arch ridge for hitting the arch of the infant's foot.
[0014]
The operation and effect of each of the above configurations will be described in the section of the embodiment of the invention.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows the sole of an adult with an arch formed. In the figure, the arrows indicate the trajectories of weight shift during walking. When attention is paid to the movement of the center of gravity during walking of an adult, first, the ground touches the heel, the center of gravity moves to the outside of the foot, and the head moves from the fifth metatarsal head to the first metatarsal head, and It comes off from the tip of the first finger).
[0016]
In the case of an infant who has begun to walk without forming an arch, a completely different locus of movement of the center of gravity is drawn. The inventor of the present application analyzed the walking of infants by measuring the pressure distribution on the soles. Specifically, the pressure distribution mat is used to predict the difference in the pressure applied to the sole between the start of walking and the time when the user is used to walking, and to grasp the state of the load applied to the sole and the center of gravity during walking. Measurement.
[0017]
At 13 months, 14 months, and 15 months after the birth of the subject, the subject was allowed to walk on the pressure distribution mat by free walking by calling, and the change in load and the movement of the center of gravity were compared. The pressure distribution mat used in the experiment has a sensor resolution of 1 [cm ² ], a sensor unit size of 48 cm × 44 cm, and can output normal force as pressure information. The measurement range of the sensor is 1.96 to 19.6 [kPa], and the accuracy is ± 10%. Two mats were connected to each other, placed so that the effective measurement area was 96 cm × 44 cm, and measurement was performed at a sampling frequency of 100 [Hz].
[0018]
One step of the right foot having substantially the same standing time is selected from the respective measurement results at 13 months, 14 months, and 15 months after birth, and the comparison is performed. Since the soles of the infants are still undeveloped and flat feet, the load distribution is divided into a front part and a rear part at the center of the foot length as shown in FIG.
[0019]
FIG. 3 shows a temporal change of the right foot load. Looking at the time when the rear load becomes 0 [N] at each of 13 months, 14 months, and 15 months after birth, it is 0.19 [s] at 13 months and 0.29 [s] at 14 months. , At 15 months, 0.31 [s], and the load time on the rear part gradually increases with growth. This indicates that from the immature way of walking, where the foot lands on almost the entire foot, and then the heel floats, it develops into a way of walking that lands from the heel and gradually shifts the load to the front. I have.
[0020]
FIG. 4 shows the locus of movement of the center of gravity of the sole. At the time of 13 months, the center of gravity moves linearly from the heel to the toe, whereas as the months of 14 months and 15 months progress, the center of gravity moves toward the toes in an arc. In other words, it can be seen that the center of gravity also moves in the width direction of the foot, so that a sense of stability is obtained and walking is improved.
[0021]
The inventor of the present application also investigated the locus of the center of gravity movement of the left and right feet of the infant. FIG. 5 is a trajectory of the center of gravity of an infant at the age of 13 months (one month after the start of walking) as an example of the walking start time and an infant at the age of nineteen months (9 months after the start of walking) as an example of the time at which the user is used to walking. The time factor and the distance factor are shown.
[0022]
As is clear from the comparison between (a) and (b) of FIG. 5, the center of gravity moves to the center of the foot at the time of walking start, and moves to the next foot as it is. This is because, when one foot is standing, before the center of gravity moves to the forefoot, the next foot lands, and the center of gravity is moved with both feet touching. That is, the center of gravity is not moved efficiently.
[0023]
At the time of walking, the center of gravity moves to the forefoot through the heel and then to the heel of the next foot. That is, the center of gravity shifts from the heel to the forefoot when one foot is standing, and then the next foot lands. This is considered to be a manifestation of the action of kicking the ground with the forefoot.
[0024]
Next, the free leg time ratio, which indicates the percentage of time during which one foot is standing on one leg, increases to 21.5% at the start of walking and 31.0% at the time when the user is used to walking. Has increased stability. Also, the stride is 25.9 cm at the start of walking, while it is 37.4 cm at the time when the user is used to walking, and the walking speed also increases from 0.63 km / h to 1.35 km / h. ing. From this, it is considered that the walking efficiency is improved.
[0025]
From the above measurement results, the stability during walking and the walking efficiency were increased as the user became accustomed to walking from the start of walking, and it was recognized that walking was improved.
[0026]
An object of the present invention is to provide an insole set and an insole capable of appropriately promoting the formation of an arch in accordance with the growth stage in consideration of the infant's walking characteristics as described above.
[0027]
The insole set includes a first insole 10 shown in FIGS. 6 to 8, a second insole 20 shown in FIGS. 9 to 10, a third insole 30 shown in FIGS. 11 to 13, and FIGS. A fourth insole 40 shown in FIG. 15 and a fifth insole 50 shown in FIG. 16 are provided.
[0028]
Insole sets are made by combining different types of insoles, but there are various combinations depending on the purpose. For example, an insole set can be configured by a combination of insoles described below.
[0029]
A. First insole 10 + Second insole 20 (FIG. 20)
B. Third insole 30 + Fourth insole 40 (FIG. 21)
C. First insole 10 + Third insole 30 (FIG. 22)
D. 2nd insole 20 + 4th insole 40 (FIG. 23)
E. FIG. First insole 10 + third insole 30 + fifth insole 50 (FIG. 24)
F. Second insole 20 + fourth insole 40 + fifth insole 50 (FIG. 25)
G. FIG. First insole 10 + second insole 20 + third insole 30 + fourth insole 40 + fifth insole 50 (FIG. 26)
The first insole 10 shown in FIG. 6 and the third insole 30 shown in FIG. 11 have an inter-finger ridge sandwiched between the first and second toes of the infant, and the remaining area is the ridge. It is a flat shape without any. These insoles 10 and 30 are suitable for infants in the early stages of walking. The walking movement of the infant at the beginning of walking is a so-called flat walking in which the sole of the foot touches the ground almost at the same time, and the trajectory of the movement of the center of gravity is linear and escapes at the thumb (first finger).
[0030]
The presence of the inter-finger ridge that provides a grasping action to the first and second fingers promotes the formation of the arch of the infant's foot. In the toddling stage at the beginning of walking, since the user can only walk flat, that is, can walk only with a solid foot, a flat shape is desirable in an area other than the inter-finger ridge. For example, if there is a bulge in the arch part of the insole at the beginning of walking, the balance between the left and right is deteriorated, and the walking of the infant becomes unstable.
[0031]
The first insole 10 and the third insole 30 will be described more specifically.
[0032]
The first insole 10 includes a partition wall 11 that rises and extends between the first finger 1 and the second finger 2 of the infant's foot as a protruding portion between fingers. The first insole 10 is used when an infant wears shoes barefoot. As shown in FIG. 8, the partition wall 11 is a flat plate-like member extending between the first finger 1 and the second finger 2, and its upper end 11a is slightly thicker. In addition, a base plate 11b located on the back surface of the insole is formed at the base end. The area other than the partition wall 11 has a flat shape so as to be suitable for an infant who has begun to walk.
[0033]
As shown in FIG. 8, the height of the partition wall 11 is substantially equal to or larger than the toes of the infant. Since the foot of the infant performs a movement of grasping the partition wall 11 located between the first finger 1 and the second finger 2, the formation of the arch is promoted.
[0034]
The sixth insole 60 shown in FIGS. 17 to 19 is obtained by improving the first insole 10. The sixth insole 60 has a partition wall 61 rising and extending between the first finger and the second finger. As shown in the figure, the partition wall 61 has a relatively hard flat hard material portion 62 and a relatively soft soft material portion 63 surrounding the entire hard material portion 62. The hard material portion 62 is formed of, for example, hard silicon rubber, and the soft material portion 63 is formed of, for example, soft silicon rubber.
[0035]
The partition wall 61 is in direct contact with the skin of a very sensitive and weak infant. According to the sixth insole 60, the soft material portion 63 is in contact with the skin of the baby, so that the skin is not damaged. On the other hand, the hard material portion 62 inside keeps the partition wall 61 stably upright.
[0036]
A third insole 30 shown in FIGS. 11 to 13 has a vertical ridge 32 extending slightly between the first finger 1 and the second finger 2 as a ridge between fingers, An inverted T-shaped protruding portion 31 including a lateral protruding portion 33 extending below the base and below the base of the second finger 2. The third insole 30 is suitable for use when a baby wears socks because the height of the raised portion is low. Needless to say, the third insole 30 can also be used when the infant wears shoes barefoot.
[0037]
Considering that the foot is put on the third insole 30 while wearing socks, the height of the inverted T-shaped raised portion 31, that is, the height of the vertical raised portion 32 and the horizontal raised portion 33 is set to 5 mm or less. Is preferred.
[0038]
The infant performs a finger movement such that the first finger 1 and the second finger 2 grip the vertical ridge 32 even in a state of wearing socks. In this case, since the height of the vertical protrusion 32 is low, the finger slips only with the vertical protrusion 32, and the finger gripping operation becomes insufficient. The lateral ridge 33 acts to stop such finger slippage, thereby facilitating good gripping operation.
[0039]
Since the infant who starts to walk is a solid foot walk, if the ridge extends below the base of the fourth finger 4 and the fifth finger 5, the feet will be caught during walking, and the walking balance will be poor. Become. Therefore, preferably, the lateral protrusion 33 has a length such that one end thereof does not exceed the third finger 3.
[0040]
As described above, the first insole 10 is used when wearing shoes barefoot, and the third insole 30 is used particularly when wearing shoes while wearing socks. Therefore, according to the insole set including the combination of the first insole 10 and the third insole 30 (FIG. 22), the formation of the arch of the infant who starts to walk in both the barefoot state and the socked state is promoted. can do.
[0041]
The height of the foot in the shoe differs between the barefoot state and the state of wearing socks by the thickness of the sock. Therefore, in addition to the combination of the first insole 10 and the third insole 30, it is preferable to provide a flat insole 50 having no unevenness as shown in FIG. 16 as a set (FIG. 24). The fifth insole 50 is placed under the first insole 10 when wearing shoes barefoot. Even when the third insole 30 is used barefoot, the fifth insole 50 is preferably arranged below the third insole 30.
[0042]
The second insole 20 shown in FIG. 9 and the fourth insole 40 shown in FIG. 14 each have, in addition to the inter-finger protuberance, a protruding portion for the arch that hits the arch of the foot of the baby. These insoles 20 and 40 are suitable for infants at the stage where arch formation has begun. When the formation of the arch begins, the trajectory of the movement of the center of gravity starts to draw an arc. However, the degree of curvature is still small. Therefore, at this stage, if an insole having an arch for ridge is used, the movement of the center of gravity outward becomes larger due to the presence of the ridge for the arch of the foot. As a result, the degree of curvature of the locus of movement of the arc-shaped center of gravity increases, and the formation of the arch is further promoted.
[0043]
The second insole 20 and the fourth insole 40 will be described more specifically.
[0044]
The second insole 20 has a partition wall 21 that rises and extends between the first finger 1 and the second finger 2 of the infant's foot as the inter-finger ridge, and also hits the arch of the infant's foot. An arch ridge 22 is provided. Since the partition wall 21 is substantially the same as the partition wall 11 of the first insole 10, the description thereof is omitted. As shown in FIG. 9 and FIG. 10, the arch protruding portion 22 is protruded so as to hit the entire arch forming region of the infant's foot.
[0045]
The second insole 20 is used when the infant who has begun to form the arch wears shoes barefoot. The use of the second insole 20 at this stage not only promotes the finger movement by the partition wall 21 but also increases the degree of curvature of the trajectory of the movement of the center of gravity by the arch protuberance 22, thereby further promoting the formation of the arch. Is done.
[0046]
An insole set (FIG. 20) composed of a combination of the first insole 10 and the second insole 20 is used when an infant wears shoes barefoot, and the formation of the arch starts from the stage of starting walking. Can be used up to the stage.
[0047]
The fourth insole 40 includes a vertical ridge 42 that protrudes slightly between the first finger 1 and the second finger 2 to extend between the first finger 1 and the second finger 2, a lower part of the base of the first finger 1, and a second finger. In addition to having an inverted T-shaped ridge 41 consisting of a lateral ridge 43 extending below the base of the base 2, an arch ridge 44 for hitting the arch of an infant's foot is provided. Since the inverted T-shaped raised portion 41 is substantially the same as the inverted T-shaped raised portion 31 of the third insole 30, the description thereof is omitted. As shown in FIG. 14 and FIG. 15, the arch protuberance 44 is protruded in such a shape that it hits the entire arch formation region of the infant's foot.
[0048]
The fourth insole 40 is used when the infant who has begun to form the arch wears socks while wearing socks. The use of the fourth insole 40 at this stage increases the degree of curvature of the trajectory of the movement of the center of gravity in addition to the promotion of the finger movement by the inverted T-shaped raised portion 41, and the degree of curvature of the locus of movement of the center of gravity is increased by the raised portion 44 for the arch. Formation is further promoted.
[0049]
The insole set (FIG. 21) composed of a combination of the third insole 30 and the fourth insole 40 is used when an infant particularly wears socks while wearing socks, and forms an arch from the beginning of walking. Can be used up to the stage where it started.
[0050]
As described above, the second insole 20 is used when wearing shoes barefoot, and the fourth insole 40 is used particularly when wearing shoes while wearing socks. Therefore, according to the insole set (FIG. 23) composed of the combination of the second insole 20 and the fourth insole 40, the infant who starts to form the arch in both the barefoot state and the sock-wearing state Thus, the formation of the arch can be further promoted. In the barefoot state and the state where the sock is worn, the height of the foot in the shoe is different by the thickness of the sock, and in addition to the combination of the second insole 20 and the fourth insole 40, shown in FIG. It is preferable to provide the fifth insole 50 having a flat shape with no unevenness as a set (FIG. 25).
[0051]
The insole set shown in FIG. 26 includes a first insole 10, a second insole 20, a third insole 30, a fourth insole 40, and a fifth insole 50. According to this insole set, it is possible to cope with both the state of wearing bare feet and the state of wearing socks, and further, it can be used from the stage of starting walking to the stage of starting arch formation.
[0052]
Although the present invention has been described with reference to the drawings, the present invention is not limited to the illustrated embodiment. Various modifications and variations can be made to the illustrated embodiment within the same or equivalent scope as the invention described in the claims.
[Brief description of the drawings]
FIG. 1 is a diagram showing a locus of movement of the center of gravity of an adult's foot.
FIG. 2 is a diagram showing that a baby's foot is divided into a front part and a rear part for pressure distribution analysis.
FIG. 3 is a diagram showing a temporal change of a right foot load.
FIG. 4 is a diagram showing a locus of movement of the center of gravity of the sole.
FIG. 5 is a diagram showing a locus of movement of the center of gravity of right and left feet.
FIG. 6 is a perspective view showing an example of an insole.
FIG. 7 is a plan view of the insole of FIG. 6;
FIG. 8 is a sectional view taken along line 8-8 in FIG. 7;
FIG. 9 is a plan view showing another example of the insole.
FIG. 10 is a sectional view taken along line 10-10 in FIG. 9;
FIG. 11 is a perspective view showing still another example of the insole.
FIG. 12 is a plan view of the insole of FIG. 11;
FIG. 13 is a cross-sectional view taken along line 13-13 of FIG.
FIG. 14 is a plan view showing still another example of the insole.
FIG. 15 is a cross-sectional view taken along line 15-15 of FIG.
FIG. 16 is a perspective view showing still another example of the insole.
FIG. 17 is a perspective view showing still another example of the insole.
18 is a longitudinal sectional view of the insole partition wall shown in FIG. 17 cut in a length direction.
19 is a longitudinal sectional view of the insole partition wall shown in FIG. 17 cut in a width direction.
FIG. 20 is a diagram illustrating an example of an insole set.
FIG. 21 is a diagram showing another example of the insole set.
FIG. 22 is a diagram showing still another example of the insole set.
FIG. 23 is a diagram showing still another example of the insole set.
FIG. 24 is a diagram showing still another example of the insole set.
FIG. 25 is a diagram showing still another example of the insole set.
FIG. 26 is a diagram showing still another example of the insole set.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 1st insole, 11 partition wall, 20 2nd insole, 21 partition wall, 22 arch ridge, 30 third insole, 31 inverted T-shaped ridge, 32 vertical ridge, 33 horizontal ridge, 40 fourth Insole, 41 inverted T-shaped ridge, 42 vertical ridge, 43 horizontal ridge, 44 arch ridge, 50 fifth insole, 60 sixth insole, 61 partition wall, 62 hard material part, 63 soft material part.

Claims (6)

A first insole having an inter-finger ridge sandwiched between the first and second toes of the baby's foot, and the remaining area having a flat shape without the ridge;
And a second insole having an arch for the arch of the infant's foot in addition to the inter-finger ridge. The insole set for an infant shoe according to claim 1, wherein the inter-finger ridge includes a partition wall rising and extending between the first finger and the second finger. The inter-finger ridge extends vertically to a small height between the first and second fingers, and extends below the base of the first finger and below the base of the second finger. The insole set for infant shoes according to claim 1, comprising an inverted T-shaped ridge formed by a lateral ridge. The insole set for infant shoes according to claim 3, wherein the height of the inverted T-shaped protrusion is 5 mm or less. The insole set for infant shoes according to claim 3 or 4, wherein the lateral ridge has a length such that one end thereof does not exceed the third finger. An inter-finger ridge sandwiched between the first and second toes of the infant's foot,
An insole for infants, comprising an arch for the arch of the feet of the infant.

Images