KR100952153B1 - Shoe - Google Patents

Abstract

Functional footwear of the present invention, the water repellent portion of the bottom of the shoe is a concave portion of the foot, in particular the portion corresponding to the metatarsal head, the foot plane is concave than the periphery so that a portion of the foot can go down in this part when pressure is applied Characterized in that formed. The metatarsal bone has five metatarsal bones corresponding to five toes on one foot. For example, the present invention may be applied to only the first metatarsal portion or the first metatarsal bone and the fifth metatarsal bone, but all five metatarsal bones In the water-repellent portion is preferably formed. Such a structure can be realized by a member placed under the sole such as the midsole, insole, sole and heel, and a functional insole can also be used to form such a structure.

Description

Functional shoes {shoe}

The present invention relates to a shoe, and more particularly to a functional shoe that can promote the plantar foot flexion movement of the heel lifting step during walking.

The feet are sophisticated and delicate organs, each of which consists of about 26 bones, 33 joints, 107 ligaments and numerous muscles and tendons. 1A and 1B are a plan view and a side view seen from the plain side showing the bone structure of such a foot.

These foot components form a basic fixed structure to perform the function of the foot well in the line state and the moving state, and forms a few formal shapes and structures by the combination of each other in each state.

For example, as a fixed structure, the soles of the soles of the feet are recessed from the surface, called the arches of the feet. Our feet have three arches. Among these arches, especially the medial calf of the foot is important, and when the medial calf structure collapses, various symptoms occur from general fatigue and pain of the foot to valgus valgus, callus, flat foot.

On the other hand, the shape of the foot during the walking process is different depending on each period, the walking process can be classified into four stages according to the shape of the foot during walking. In walking, the foot is the initial grounder (heel contact phase), the middle footrest (foot flat phase), the heel lift phase, the toe lifter (propulsion, toe off phase). ) And swing phase, respectively. When the foot is said to be four steps of walking, touching the whole heel, lifting the heel, and pushing the forefoot on the basis of the motion, the foot goes through these four walking steps periodically and repeats the steps.

In order to walk smoothly at each of these stages, the components of the foot have some formal shape in relation to each other, and if the shape is not properly implemented for any reason, walking becomes inefficient, on the other hand, Excessive pressure or force may be applied to each part to cause damage or deformity, and on the other hand, a necessary part of the foot may not be sufficiently used, and thus the function of the foot is weakened along with the malformation of the foot.

Shoes have a positive effect of protecting your feet from damage from external heat, cold, and contact with external objects, and alleviating the impact on your feet when you move, but they can also have a negative effect on your feet by limiting their natural movements. . For example, the soles of the conventional shoes, such as insoles and midsoles, are made in a shape that conforms to the curved surface of only the soles of the soles, or because they are entirely made of cushioning members, they weaken and reduce the natural movement of joints that connect the bones or bones of the foot during walking or running. There is a problem.

Hereinafter, the problem of walking will be described in more detail by illustrating high heels, particularly for highlighting problems among conventional shoes.

First, a foot that walks normally in the heel contact, which is the first step of walking, forms a dorsiflexion when the heel touches the ground, and walks normally in the full touch, which is the second step of walking. The feet will form Plantarflexion, which extends the ankles as they reach the ground.

In addition, in the third step of lifting the heel, the ankle is further extended and the plantar flexion is intensified, so that the joint part connecting the metatarsal head and the first bone of the toe is bent upward. Hereinafter, for convenience, the foot shape of the second step forms the first type plantar flexion, and the foot shape of the third step forms the second type plantar flexion.

In the fourth step, forefoot push, the toe of the foot is formed in the plantar flexion, and in the third step, the toe is pushed back to the ground as the calves and the vertebrae, which are angled, spread out, and then back to the first step of walking. As you prepare for the transition, your feet will bend and your feet will fall off the ground.

However, in the case of the existing high-heeled women's dress shoes, that is, high heels, the first step is not a natural four-step walk, based on the shape of the walking foot. That is, when walking, the shape of the foot is fixed by the shape of the high heels itself in the form of a magpie foot similar to the type 2 plantar flexion that always holds the heel.

Therefore, the high heels make it difficult to form the first step foot flexion during walking, and prevents the function of forming the first type plantar flexion in the entire contact state of the metatarsal step of the second step. In addition, in normal walking, the foot muscle flexion of the first stage is changed to the first type plantar flexion of the second stage and the second type plantar flexion of the third stage, so that the action of the foot muscles is continuously increased in a large width. The muscles can accumulate enough elasticity. However, the high heels are pushed to the forefoot in four stages while the second type plantar flexion continues without the first type plantar flexion. Therefore, during high heels walking, the width of the foot muscles is reduced or the width of the action, and the elasticity of the muscles due to the deformation may not be fully utilized, and the whole foot is not changed enough in the continuous Plantarflexion state with only the strength of the legs. There is a tendency that the foot is lifted, and the plantar flexion function is significantly lowered in the pushing motion of the toes.

In addition, in both high heels and general shoes, the material of the shoe sole is usually made of resin or rubber to increase durability, and has a strong elasticity and prevents the shape of the foot. In particular, it prevents the foot from being deformed sufficiently to achieve the heel lifting action, ie, type 2 plantar flexion, of the foot in the third step of walking. As mentioned above, if the foot is not sufficiently deformed in the third step, the elasticity of the muscles is accumulated in the foot, so that the end part pushes the ground in the fourth step. After all, there is a problem that the efficiency of walking falls.

The present invention aims to solve or alleviate the above-mentioned problems of conventional shoes in walking, and to provide a functional shoe that allows the heel lifting to be sufficiently performed in the third step of walking, which is made of four steps.

In addition, it is an object of the present invention to provide a functional shoe which can enhance the heel lifting function, especially in high heels.

The object of the present invention is to provide a functional shoe that ultimately relieves the impact on the foot during walking, while the form of the foot forming the four steps of walking compared to conventional shoes can be made more naturally.

Functional shoes of the present invention for achieving the above object,

Among the soles of the shoe, the foot corresponding to the metatarsal bone of the foot, particularly the metatarsal head, is formed to form a water-repellent portion in which the bottom plane becomes more concave than the periphery so that a part of the foot can go down there when pressure is applied. .

At this time, when the pressure is applied to the corresponding metatarsal bone is a step of forming the plantar flexion of the heel lifting step, which is the third step of the four steps of walking consisting of heel contact, full contact, heel lifting, and forefoot pushing. . The metatarsal bone has five metatarsal bones corresponding to five toes on one foot. For example, the present invention may be applied to only the first metatarsal portion or the first metatarsal bone and the fifth metatarsal bone, but all five metatarsal bones In the water-repellent portion is preferably formed. In addition, the sole of the shoe may include all of the members placed under the sole, such as the midsole, insole, sole and heel, even if there is no separate heel can be considered.

In the present invention, the water-repellent part may be made by simply removing a part of the metatarsal bone of the foot, for example, a portion corresponding to the metatarsal head, to simply make a groove that is an empty space, but the elastic body that contracts greatly when pressure is applied to the groove. More preferably it is made in such a way that is installed. In this case, when the elastic body is pressed by pressure in the step of forming the second type of plantar flexion, which is the third step of walking, and energy is stored in the inside, the step moves to the next step through the restoring force of the elastic body. The ease of implementation can be increased. To increase this effect, the elastic body may be formed to partially protrude out of the groove.

In addition, the grooves do not necessarily have to be made in the insole surface where the bottom of the foot touches, but may be formed in the midsole or the outsole. Therefore, the water-repellent portion may include not only a case of forming a clear step with the periphery, but also a case in which the insole or insole forms a gently recessed portion compared to the periphery.

However, the present invention may also be considered a case where only the groove is formed without a separate elastic body.

In the present invention, the elastic body may be installed on each of the corresponding portions of the five metatarsal heads constituting the foot and installed in a total of five places, and an additional bottom member directly contacting the sole of the elastic body may be further installed. For example, if the groove of the water repellent part is formed in the midsole, an insole or insole may be installed in which only a portion corresponding to the groove is distinguished from the surroundings. In this case, plantar flexion is more efficiently formed by forming an elastic body in the metatarsal head of the metatarsal bone.

In the present invention, the elastic body is composed of a compressed coil spring having an outer material wrapped in a pocket (pocket) can be inserted into the groove, the elastic rubber or EVA (Ethylene Vinyl Acetate) foam, polyurethane resin, etc. When the material can be more easily contracted compared to the surroundings to form the water repellent portion of the present invention. In addition, the magnetic shape may be made of a material capable of memory.

In the present invention, the elastic body may be installed in each of the five metatarsal heads constituting the foot in a divided state, the elastic body does not directly touch the foot, the upper end of the elastic body is limited to the water repellent only in the bottom directly contacting the sole More can be installed. The separate flooring may be installed as one instead of being installed separately in the five metatarsal heads.

In particular, the present invention can be usefully applied to the high heels of the bottom end of the shoe is more than 3 centimeters higher than the front end, wherein the heel or the bottom of the high heel is a rear end slope to form the foot flexion of the first stage of walking The angle of the floor (the angle between the bottom of the shoe bottom and the bottom of the shoe and the point of contact with the ground) is the ground, and the bottom is placed under the sole such as the sole and the heel while the entire bottom is in contact with the ground. When including all the members to be laid, it can be formed so that it may be 45 degrees or less.

At this time, in the high heels, the sole of the heel or the bottom of the sole formed on the ground and the falling part is hollowed out in the lower heel of the foot or filled with an elastic material, such as urethane foam, which is easy to shrink, and is elastically deformable. It may consist of a ring skeleton.

In this case, the elliptical ring skeleton is made of an elastic plastic material or metal material in the elliptic ring skeleton state to better mitigate the impact when the heel touches the ground in the first step of walking and forming the foot flexion. can do.

The present invention can alleviate the problem of preventing the conventional heel lifting in the third step of the four-step walking in walking, especially in high heels, it is possible to enhance the heel lifting function.

The present invention ultimately improves the efficiency of walking and prevents the pathology from walking by relieving the impact on the foot during walking, so that the form of the foot forming the four steps of walking can be made more naturally.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

2 is a schematic side cross-sectional view of a functional shoe according to an embodiment of the present invention. Overall, the sole part of the rear is located high to form a high heel, but the sole of the shoe is made of an elliptical ring shape of the sole 10 without a separate heel over the part spaced apart from the ground to replace the heel. As can be seen through the enlarged view of FIG. 3, the sole 10 is approximately y-shaped at the connecting portion 17 where the front part 12 of the sole 10 and the elliptical ring-shaped portion meet each other. The lower part, which is in contact with the ground, 16 is directly connected to the front part of the foot 12 of the sole, and the part which is in contact with the sole of the elliptical ring 14 is made of an elastic material such as urethane foam 11 and spring 15 in the middle. It is connected to the front part 12 of the foot.

Where the front part 12 of the sole 10 and the elliptical ring portion meets the portion corresponding to the metatarsal bone of the foot. Foot front part 12 of the outsole in contact with the ground is the foot (foot) of the foot and the foot of the foot comes in contact, it can be seen that the metatarsal bone of the foot is placed on the connection portion 17 of the sole forming a substantially y-shape.

The groove | channel 13 is formed in the connection part 17 through the sole 10 and the urethane foam 11 which is an elastic material in the horizontal side (width direction) of a foot in the intervening part. The compression coil spring is inserted and installed in the groove 13. In this case, in order to facilitate the operation of inserting the compression coil spring into the groove, the spring consists of a pocket-type spring 15 wrapped in a pocket-type nonwoven pocket.

Figure 4 is a plan view of the bottom of another embodiment of the present invention, by using the outsole under the insole 30 in the shoe bottom based on the insole 30 and grooved to be laterally connected to the metatarsal tip portion The urethane foam 11 forms a highly elastic elastic layer. Each of the grooves 13 formed through the soles of the first to fifth metatarsal heads and the urethane foam 11 elastic material layer, respectively, shows a case where the pocket springs are installed.

The part of the shoe, which is composed of members arranged under the sole of the shoe, is referred to as a shoe sole, and when the structure of the bottom member constituting the shoe bottom is divided into pieces, first, a filler layer 20 or a midsole is installed above the sole 10, and thereon, Insole 30 is installed to the bottom of the shoe.

In this structure, a relatively rigid sole is removed in a portion of the connection portion 17 and is installed in such a manner that the elastic material, that is, the urethane foam 11 and the pocket spring 15, is easily deformed and stretched therein. Therefore, when the walking step is, for example, the third step and the pressure is concentrated on this part, the elastic material contracts so that the hard resin sole part above the elastic material approaches the hard resin sole part below the elastic material. As a result, the bottom of the shoe in this part is concave downward, as shown by the dotted line 50 in FIG. 3, and is partially lowered to the ground while being partially accommodated by the foot receiving part formed by concave deformation of the metatarsal part of the foot. In addition, the elastic material is contracted at this stage, thereby also acting to relieve the pressure of the foot concentrated on the metatarsal portion or the impact of landing.

At this time, the metatarsal bone and the vertebral bone have a larger angle, and the lower foot muscles are stretched and the ankles are further stretched to deepen the type 2 plantar flexion of the third step of walking.

On the other hand, at this time in the width direction (horizontal axis) of the foot in the sole is wider than the groove 13 is provided with a pocket spring is formed in the horizontally continuous groove, as shown in Figure 4 where the highly elastic urethane foam 11 is formed in this portion If so, the thickness of the sole, which has a strong and strong elasticity, is in a thin state, so that this portion can be easily bent in comparison with other portions of the sole. Therefore, the problem that the flooring blocks the free deformation of the joint in the walking of the foot is reduced.

Subsequently, in the forefoot pushing step, which is the fourth step of walking, the plantar flexion is intensified, and thus the ground is pushed to the forefoot more efficiently by using the elasticity of the muscle accumulated in the foot. This is the same logic as the bow that flies farther when the bow strikes to increase the amount of displacement of the bow.

In addition, the elastic energy accumulated in the elastic material compressed by the pressure at the y-shaped connection part 17 of the sole acts to restore the force of the foot by pushing up the metatarsal bone of the foot. It facilitates the foot shape while pushing the foot, while making it easy to form the foot flexion to the first step, which is the next step of walking, and to increase the angular change between the metatarsal bone and the fractured bone to function To strengthen.

  In the above, the high heel type is taken as an example, but the discussion about the formation and action of the foot receiving portion of the metatarsal part in the shoe of the low heels rather than the high heel can be equally applied to the third and fourth steps of walking.

On the other hand, if you look at the role of the sole portion formed in the elliptical ring instead of the heel of the shoe, in the first step heel contact of walking, the angle between the inclination of the rear end of the heel and the ground to make a small acute angle to substantially reduce the heel height By smoothing the transition from the first step to the second step of walking in the state where the heel is in contact with the ground, it is possible to facilitate or facilitate the pedestrian walking while forming the foot flexion during walking.

In other words, in high heels, the heels are high when walking, so the time from pushing to the heel to the next heel is short, and there is a case in which there is not enough room to form a foot flexion. In addition, even if the rear end of the heel touches the ground in the form of foot flexion, the transition to the next step of the formation of the plantar flexion may occur, and the shoe may slip off the ground or the foot joint may occur. However, in the elliptical ring structure of the heel (sole corresponding to the heel) as in the present embodiment, the effect of shortening the heel is substantially shortened to lengthen the period in which the foot is formed while the foot is in the air, and the shape of the smooth curve and the elliptic ring Due to the elastic wear and tear of the entire arch, it is possible to minimize the shock caused by the rapid change of posture and the slipping of the heel of the shoe and the group of the foot joints when the foot transitions from the foot flexion to the plantar flexion.

In addition, in the present embodiment with respect to the second step of walking, it is possible to form the foot dorsiflexion, it is also possible to form the first type foot plantar flexion. Strictly speaking, the second step of general walking is that both the bottom of the shoe and the foot are in full contact with the ground, but according to the present embodiment, when the type 1 plantar flexion is formed in the walking, not the bottom of the shoe is in contact with the ground. Type 1 plantar flexion according to this embodiment is somewhat different from general type 1 plantar flexion. However, it is important to refer to the overall shape of the foot, in the present embodiment, since the shape of the foot forms the second type plantar flexion according to the shape of the shoe in the step where the soles of the shoes all touch the ground, If the plantar flexion is formed in the first stage, the first plantar flexion is naturally formed through the transition phase in the process of reaching the third stage of forming the plantar flexion of the second type. In particular, the elliptical ring-shaped portion of the sole is the second step of the incomplete walking according to the embodiment of the present invention, in the step of forming the first type plantar flexion, so as to maximize the portion that is in close contact with the ground by elastic deformation as simple heel Compared to the case of having a shape, the first type of plantar flexion in high heels can be more stably formed.

On the other hand, the elliptical ring can accumulate energy while the impact of the walking on the heel is relieved by the deformation of the elliptic ring sole in the first and second steps of walking according to the present embodiment, the accumulated energy is There is an advantage that the shape of the foot facilitates the transition to heel lifting as all the floors move to the third stage of gait, which touches the ground.

Therefore, according to the present embodiment, even when walking in a shoe with high heel in the form of high heels, it is possible to improve the efficiency of walking by deriving the foot shape made in four steps of natural walking, and limiting the shape of the foot when the shoe is walking. It can prevent the pathology of the foot from coming.

5 is a perspective view showing a functional foot orthotic that may be used in the present invention.

Referring to the functional insole 60 of Fig. 5, the curved surface of the unitary so that the plantar flexion receiving portion for accommodating the first metatarsal bone and the fifth metatarsal bone and the rear support portion for accommodating the heel can increase the contact area with the sole of the foot if possible. Consisting of the forefoot varus and forefoot valgus upper wedge (63,64) made of a buffer member attached to the plantar bone receptacle for accommodating the first metatarsal bone or the fifth metatarsal bone is applied to the first metatarsal bone or the fifth metatarsal bone It is made to cushion the impact and to restore the inner or outer lateral arch.

The functional insole 60 is preferably made of a material that is strong enough to maintain its shape, such as plastic, and has some elasticity and is easily molded. As the buffer member, an elastic material member such as polyurethane or ethylene vinyl acetate (EVA) having a restoring force may be used.

When the insole 60 is used, the foot of the foot is detached from the ground while absorbing the impact applied to the plantar flexion receptacle of the insole 60 by the first and fifth metatarsal feet of the foot. By pushing the first metatarsal bone and the fifth metatarsal bone, it is possible to increase the amount of motion or the range of motion of the first metatarsal bone and the fifth metatarsal bone, thereby enhancing the function of a joint connecting the bones constituting the foot.

In addition, since the meta dome 65 is formed between the plantar flexion accommodating portion for accommodating the first metatarsal bone and the plantar flexion accommodating portion for accommodating the fifth metatarsal bone, a meta dome 65 is formed to wear shoes equipped with insole. In the process of walking or running, the meta dome 65 can obtain the effect of acupressure on the metatarsals of the foot.

In addition, the shock absorbing member 66 is attached to the rear support portion to cushion the impact of the landing on the heel of the foot during the landing of the foot, thereby impacting the heel of the foot, including the calcaneus, in the process of stepping the foot. You can mitigate to a minimum.

And anti-slip protrusions (not shown) are formed on the inner and outer sides of the forefoot base 68 or the rear foot base 67 of the insole 10, and the block-shaped wedges are attached to the inner and outer sides of the non-slip protrusions, so the insole By preventing the slip of the (10) to increase the stability and the height of the insole 10 is possible.

By using such a functional insole, as a result, a case of forming the functional shoe of the present invention and a case of using such a functional insole in addition to the functional shoe of the present invention can be assumed. Such functional insoles can make the configuration of the present invention clear and further increase the effect of the present invention.

In the above, it is assumed that the member shown in FIG. 5 is used as an insole of a shoe, but a case of forming a functional shoe of the present invention using a midsole having the same structure may be assumed. In this case, the sole of the functional shoe having the structure as shown in FIG. 5 may be attached to the sole of the structure of FIG. 5 with the midsole member to form a functional shoe having an integrated sole.

Figures 6a and 6b is a side view showing the bone structure of the corresponding portion of the foot before and after forming a groove in the metatarsal head portion of the foot, the elastic body is well contracted in accordance with an embodiment of the present invention.

According to these drawings, the functional insole is installed in the functional shoe with the forefoot varus upper wedge 63 at the first metatarsal flexion accommodating portion as shown in FIG. 5, or the midsole having the structure as shown in FIG. 5 is adopted in the functional shoe itself. Or, when the bottom groove and the elastic body of the functional shoe of the present invention is installed by adopting a sole of the structure as shown in FIG. 3, the first metatarsal head 71a has a bottom. Lower toward the lower, the first metatarsal bone 71 and the basal bone 73 is in the form of bending away from the parallel direction. Therefore, the range of angles formed by the first metatarsal bone 71 and the fractured bone 73 in the walking motion can be further increased, and the elastic energy accumulated in the muscle can be increased, so that the efficiency of the walking motion can be improved. In addition, as shown in the figure, the force acting on each part of the foot relieves the force pushing each other in the joint between the first metatarsal bone 71 and the ganglion bone 73 to increase the degree of freedom of movement, and thus, the movement is more smoothly. It can be done.

1A and 1B are a plan view and a side view seen from the plain side showing the bone structure of such a foot.

2 is a schematic side cross-sectional view of a functional shoe according to an embodiment of the present invention.

FIG. 3 is an enlarged view showing the structure by enlarging the portion of the sole connecting portion 17 of FIG.

Figure 4 is a plan view of the bottom of another embodiment of the present invention.

5 is a perspective view showing a functional foot orthotic that may be used in the present invention.

Figures 6a and 6b is a side view showing the bone structure of the corresponding portion of the foot before and after forming a groove in the metatarsal head portion of the foot, the elastic body is well contracted in accordance with an embodiment of the present invention.

Claims (7)

Among the bottom part where the foot bottom touches, the corresponding metatarsal head of the foot forms a water-repellent part that becomes concave lower than the surrounding when pressure is applied. The water-repellent part is made of a hollow space by removing at least a portion of the metatarsal head, and an elastic body having a greater degree of shrinkage when pressed in the groove is installed. The height of the rear end portion of the bottom portion is more than 3 centimeters higher than the tip portion, and the angle of the rear end slope of the bottom portion with the ground is less than 45 degrees. The method of claim 1, The grooves are formed in each of the five metatarsal heads constituting the foot, and the elastic body is a pocket-shaped compressed coil spring or a magnetic shape memory material and is inserted into the grooves, respectively, and is installed on the upper end of the elastic body directly on the sole and Functional footwear, characterized in that a separate bottom member is further contacted. delete The method of claim 2, Heel is formed in the sole portion of the foot and the ground, and the heel is a functional shoe, characterized in that made of an oval skeleton filled with a hollow material or easy to shrink in the lower heel of the foot when viewed from the side. The method of claim 1, When the pressure is applied, the functional shoe, characterized in that the heel lifting step of the third step of the four steps of walking consisting of heel contact, full contact, heel lifting, forefoot pushing. The method of claim 1, Includes a functional insole, the functional insole is a foot flexion receiving portion for accommodating the first metatarsal and fifth metatarsal of the foot and the rear support portion for accommodating the heel is formed of a unitary curved surface and the foot bone receiving portion is a buffer member Functional footwear, characterized in that the forefoot varus or forefoot valgus upper wedge is made of. The method of claim 1, The water-repellent part is formed using a functional midsole, wherein the functional midsole is formed of a curved surface of the plantar flexion receiving part for accommodating the first metatarsal bone and the fifth metatarsal bone and a posterior foot supporting part for accommodating the heel, and the plantar surface. Functional footwear, characterized in that the forefoot varus or forefoot valgus upper wedge is made of a buffer member attached to the bone.

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