JP2019010370A - insole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a fall accident by inducing a somatic reflex that unknowingly works the toes and activating a mechanoreceptor on the sole of the foot without providing a protrusion on the surface in contact with the sole of the foot. Provides an effective insole. SOLUTION: An inverted V-shaped through hole toward the toe is provided at a position of contact with at least one position of the MP joints of all toes, and a circular through hole is provided at the position of the ankle bone. An insole provided and further characterized in that the tip of the toe has a shape along the IP joint of the first toe and the PIP joint of the second to fifth toes. [Selection diagram] Fig. 4

Description

  The present invention relates to an insole that is used in footwear, and more specifically, the mechanoreceptor (sensory receptor) provided on the sole of a human body is stimulated to induce somatic reflex, thereby inducing the footpad during walking. The present invention relates to an insole that promotes use, improves body posture and balance, and prevents falls.

  According to statistics from the Ministry of Health, Labor and Welfare, the second most common cause of death due to accidents is a fall accident (more than 7,000 people), exceeding the annual number of traffic accident deaths (approximately 4000 people). The ratio of fall accidents is particularly high among elderly people, which has become a social problem due to the aging of the population. In recent years, however, there has been an increase in the number of injuries caused by child fall accidents. The fall of muscle strength and balance sensation due to aging is generally a problem as a fall accident, but recent studies have shown that the function of the mechano-receptor (sensory receptor) on the sole of the foot has been reduced, regardless of age or gender. It has been pointed out.

  The mechano-receptor is an organ having a so-called “sensor function” that accepts a physical stimulus from the outside, and is distributed throughout the body centering on the joint, but is particularly present on the sole of the foot. As shown in FIG. 1, the mechano-receptor on the sole of the foot is concentrated on the first heel (finger), the midfoot phalanx joint (MP joint), and the heel part. It senses not only information such as “Whether weight is applied straight” or “Where it is leaning”, but also senses shocks and interference transmitted to the body and transmits them to the brain through nerves. The brain analyzes the information from the mechano-receptor and the information from the eyes and the semicircular canal, and issues a command to each muscle of the body to maintain balance. In other words, the mechano-receptor plays the role of obtaining the first information in the standing balance, and the decrease in the function is considered to be the cause of the decrease in the balance holding power and the increase in the number of falls accidents.

In addition, it is known that the function of mechanoreceptors decreases not only when aging but also when not used. Modern people who have become extremely less likely to live barefoot are generally prone to mechanoreceptor inactivity. Originally, the basic posture of the human body during activities is that the pelvis is slightly tilted forward, but most modern people are accustomed to the movement of the toes restricted by footwear and do not use the toes for walking much. ing. For this reason, weight tends to increase on the heels, and almost no weight is applied to the third, fourth, and fifth limbs of the toes regardless of age and gender, and mechano-receptors along the MP joints are not used. Often placed in a state. Therefore, to activate the mechanoreceptor, it is important to actively work the toes.

On the other hand, various products have been proposed in which a certain uneven structure is provided on the insole or insole of footwear to stimulate the acupoints on the soles and improve the body balance during walking. For example, the insole for footwear disclosed in Patent Document 1 also stimulates the acupoints of the sole with the metatarsal pad provided in the metatarsal corresponding part. In addition, the insole and insole for footwear according to Patent Document 2 are intended to realize footwear that is smooth and less fatigued by providing various uneven portions at positions such as the turret and arch.
Japanese Patent Laid-Open No. 2013-150797 Japanese Patent Laid-Open No. 2014-147622

  However, there is no conventional footwear or insole including these prior arts for the purpose of actively activating mechanoreceptors by using a footpad. In the first place, the sensation of the skin on the sole is inherently extremely sensitive, and a somatic reflex is generated by detecting a slight sense of incongruity. Somatic reflex is a reaction that unconsciously contracts the skeletal muscle via the autonomic nervous system when receiving mechanical stimulation from the outside, and the patella tendon reflex in which the lower leg jumps up when the patella tendon is struck with a mallet Is one of the typical somatic reflections. In the lower limbs, for example, even if small sand particles enter the footwear, the body causes somatic reflexes due to the uncomfortable feeling and unconsciously causes the toes to rotate inward or outward, which rises to the legs and waist. The posture of the whole body is distorted by the movement chain.

When the acupoint called “spring” corresponding to the metatarsal bone is stimulated with a projection like the insole for footwear disclosed in Patent Document 1, the sole actually avoids this projection by somatic reflection. Therefore, it is impossible to step on the ground with the tip of the foot, and the weight is applied to the heel, which results in the ascending movement chain and tilting the pelvis backward. In addition, like the insole for footwear and the insole disclosed in Patent Document 2, if the arch portion of the arch is provided with a convex portion to support the arch shape of the arch, the convex portion as a foreign object is also unconsciously caused by somatic reflection. The toes are inward to avoid. As a result, since the heel valgus outwards as it walks, the first heel (finger) is pressed against the inner side surface of the toe portion of the footwear by the principle of leverage, and on the other hand, it tends to become a hallux valgus. Generally speaking, “the soles dislike the protrusions”, and the stimulation by the protrusions induces somatic reflexes that distort the body posture rather than the positive effect of activating mechanoceptors by using the footpads. There was a problem that the negative effect was greater.

  The present invention has been made in view of the above-mentioned problems of the prior art, and induces somatic reflexes that cause the toes to work unconsciously without providing protrusions on the surface that contacts the soles. An object of the present invention is to provide an insole that activates mechano-receptors on the soles.

  In order to solve the above-mentioned problem, the invention described in claim 1 is an insole that is used in an interior of footwear, and has a through-hole at a position where it abuts at least one position of the MP joints of all the heels. It is provided.

  As shown in FIG. 2, the MP joint (metatarsal interphalangeal joint) is a joint of all five bases and metatarsals. It is known medically and empirically that the foot part of the human body exhibits a somatic reflex that unconsciously rolls the foot pad by receiving acupuncture at the MP joint. When a protrusion is provided on the upper surface of the insole as a means for giving acupuncture, as described above, excessive somatic reflection may occur, and the muscles of the sole may react to avoid the protrusion and distort the posture of the whole body. Therefore, in the present invention, as shown in FIG. 3, instead of protrusions, moderate somatic reflexes are induced by acupuncture caused by the depression of through holes provided at the positions of the MP joints and ribs. When the sole that steps on the insole steps on the through-hole, the toes of the foot roll unintentionally curl due to somatic reflection and firmly contact the insole of the footwear. Then, when walking, the toes are used actively, so to speak, “how to grab the ground”, so that the mechanoreceptors concentrated in the MP joint are activated.

  The position and number of the through-holes can be appropriately determined according to the user's foot condition, shoe shape, and walking condition. If the tip of the toe rotates outwardly like the so-called “crab crotch” person and the first heel (finger) tends to lift, a through hole is provided at the position of the MP joint of the first heel, so that the first is natural when walking. It is possible to put power into the bag. On the other hand, in the case of people who tend to have internal toes that tend to swivel and tend to “floating fingers” where the third to fifth heels do not come into contact with the ground, it penetrates to the position of the MP joint on the fourth heel. It is effective to provide holes. Further, in order to actively use all the five bases, it is desirable to provide through holes at the positions of the first, third and fifth base MP joints.

  Next, the invention described in claim 2 is the insole according to claim 1, wherein the tip of the toe side has a shape along the IP joint of the first heel and the PIP joint of the second heel to the fifth heel. It is characterized by.

  As shown in FIG. 2 again, the IP joint (interphalangeal joint) is a joint of the distal phalanx and the proximal phalanx at the tip of the first heel (finger), and the PIP joint (proximal phalangeal joint) is the second joint. It is the joint of the middle phalanx and the proximal phalanx from the fifth to fifth. In addition, the insole according to the present invention is different from a general insole, and the tip of the toe side is cut in an arc shape from the first toe IP joint along the second to fifth toe PIP joints and becomes clogged. Therefore, at the time of wearing, all the tips of the five bases (portions corresponding to the distal phalanx) protrude from the tip of the insole. Therefore, the tip of the toe is slightly rounded slightly by the thickness of the insole, and the MP joint portion of the sole is in close contact with the upper surface of the insole.

  Next, the invention described in claim 3 is the insole according to claim 1 or 2, wherein the through hole is formed in an inverted V shape toward the toe direction.

The shape of the through hole may be a circle or an ellipse, or may be a concave shape instead of the through hole as long as the sole is given acupuncture by depression. However, by forming an inverted V-shaped through-hole in the toe direction, the shape of the inverted V-shaped pointed part hits the sole when the sole steps on it. Moreover, since the weight moves mainly in the front-rear direction during walking, the acupuncture is emphasized because the shape of the pointed portion is directed forward. Therefore, it is preferable that the through hole has such a shape because an effective acupuncture can be obtained even with a relatively small through hole.

  Finally, the invention described in claim 4 is the insole according to any one of claims 1 to 3, further comprising a through hole at a position of the rib.

The heel part is not only the largest weight on the sole but also the part where the mechanoreceptors are concentrated and distributed along with the MP joint part. By providing a through hole at a position directly below the ribs, the through hole can stimulate the mechanoreceptor and activate it even when standing up without walking. it can. The shape of the through hole at the position of the rib is preferably circular. The mechano-receptor in the heel is particularly important for detecting changes in body centroid position due to posture changes, exercise, and external impacts, as well as detecting body weight movement in the front-rear direction during walking like the MP joint. This is because it plays a role, and it is desirable that the mechanoreceptor is stimulated by the through-holes in all directions.

The insole according to the present invention is replaced with a conventional insole, and is installed in footwear, standing up and walking, unconsciously urging the use of the toes and grasping the ground with the tip of the foot, how to walk It can be expected that the mechanoreceptors distributed in the MP joint part are moderately stimulated and activated. This not only prevents “floating fingers” that reduce the contact area of the sole and destabilize the posture, but also enhances the sense of balance and stabilizes the body axis by activating the mechanoreceptor, thereby preventing a fall accident. Can be prevented.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to FIGS. FIG. 4 is a perspective view of the right foot insole 1 according to the first embodiment of the present invention, and FIG. 5 is a plan view thereof. The left foot is in contrast to these.

The shape of the insole 1 itself is the same as that in general use, but it penetrates the part corresponding to the MP joints of the first, third, and fifth toes in an inverted V shape toward the toe. Holes h1, h3, and h5 are provided, respectively, and a circular through hole h6 is provided at a position directly below the rib. By providing through holes in the first, third, and fifth bases, the use of all five bases can be promoted and the mechano-receptor can be activated. In this case, the through holes are not provided at the positions of the second and fourth heel MP joints, and if the through holes are provided at the positions of all the MP joints, the range of the acupuncture to the sole spreads. This is because the effect of mechanoreceptor activation is reduced. Since the number of ribs and the structure of the human toes are different between the first toe (趾) and the second to fourth toes, the movement of the first toe and other fingers is difficult to coordinate. There is a strong tendency for movements from second to fourth to be integrated. Therefore, if a through hole corresponding to only the third and fifth rods is provided in addition to the first rod, the second and fourth rods will move in conjunction with them, and the range of acupuncture will be limited. The mechanoreceptor is activated more efficiently because it does not diffuse.

(Second embodiment)
FIG. 6 is a perspective view of the right foot insole 2 according to the second embodiment of the present invention, and FIG. 7 is a plan view thereof. The shape of the insole 2 is such that the tip of the toe side is cut in an arc shape from the IP joint of the first heel along the second to fifth PIP joints. Projecting from the tip of the insole.

In addition, a portion of the sole of the insole 2 that touches the arch is greatly curved inward. When a human foot is subjected to acupuncture to the heel abductor from the heel to the arch, the toes unintentionally cause somatic reflexes. To prevent this, the inside of the footwear is the inner part of the arch. It is desirable to have a structure that does not give acupuncture. However, in general shoes, the inner part of the arch is raised so as to follow the arch shape of the arch, and especially in women's shoes, especially pumps, the shoes themselves are the arch part. Many of them are thin and have a shape that tightens the side of the foot with an upper. This shape is more than necessary for Japanese feet, which generally have a strong tendency to flat feet, even though it is not a big problem for many Westerners who originally had a clear arch shape. This will give the side acupuncture, and this will not change even if you wear a normal insole. Therefore, the swell can be leveled by providing an inwardly curved portion that avoids the swell of the arch on the shoe bottom. For this reason, even a Japanese foot with a flat foot can reduce the acupuncture of the inner part of the arch and can suppress toe adduction and abduction of the heel due to somatic reflection.

Note that, as in the insole 3 shown in FIG. 8, a through hole may be provided only in a portion corresponding to the fourth joint MP joint and the buttocks. In this case, the effects of promoting the use of the toes and activating the mechano-receptor appear mainly in the third toe, the fourth toe and the fifth toe. In addition, although not shown, it is preferable to provide a through hole only at the position of the MP joint of the first forehead when it is desired to exert an effect on the first forehead (the thumb). In addition, the material of insole itself is not specifically limited, A general urethane rubber etc. can be applied.

  As mentioned above, although embodiment of this invention was described referring drawings, this invention is not necessarily limited only to the structure mentioned above, In the range which achieves the objective of this invention and has an effect suitably, As long as they can be modified and fall within the scope of the technical idea of the present invention, they belong to the technical scope of the present invention.

  The insole according to the first embodiment of the present invention can be easily realized simply by adding a through-hole at an appropriate position of the conventional insole, and the insole according to the second embodiment is also replaced with the conventional insole. Can be applied to existing footwear. By applying and standing up and walking without changing the structure of the footwear itself, it is possible to unconsciously encourage the use of the toes and to stand and walk like grabbing the ground with the tip of the foot, and MP The mechanoreceptors distributed in the joints are moderately stimulated and activated, strengthening the sense of tension, stabilizing the body axis, and preventing fall accidents. Further, the present invention can be applied not only as an insole alone but also to the shape of the insole of footwear.

Schematic showing the distribution of mechano-receptors on the sole Plane schematic view of the footbone Schematic showing the part where the through hole is provided The perspective view of the insole 1 which concerns on 1st embodiment. The top view of the insole 1 which concerns on 1st embodiment. The perspective view of the insole 2 which concerns on 2nd embodiment. The top view of the insole 2 which concerns on 2nd embodiment The top view of the insole 3 which concerns on 2nd embodiment

1, 2, 3 Insole h1 to h6 Through hole

Claims (4)

  An insole characterized in that a through hole is provided at a position that abuts on at least one position of the MP joints of the entire arm.   The insole according to claim 1, wherein the tip end on the toe side has a shape along the IP joint of the first heel and the PIP joint of the second heel to the fifth heel.   The insole according to claim 1, wherein the through hole has an inverted V shape toward the toe direction.   The insole according to any one of claims 1 to 3, wherein the insole is further provided with a through hole at a position of a rib.