KR20240021556A - Shoe sole reduces the pressure on toe - Google Patents

Abstract

The disclosed content is that only the remaining toes, excluding the big toe and index toe, are supported by being caught on the propulsion reinforcement protrusion, so that the pressure concentrated on the big toe and index toe can be distributed when walking or running, thereby causing pain in the big toe and index toe. It is about a toe pressure reduction type shoe sole that solves this problem and maximizes the balance of propulsion.
The disclosed content includes a shoe sole body corresponding to the sole of the shoe wearer, a toe corresponding portion formed at the front end of the shoe sole body to correspond to the toe of the shoe wearer, and a rear end of the shoe sole body formed to correspond to the heel of the shoe wearer. A heel-responsive portion, a propulsion-reinforcing protrusion protruding upwardly from the rear end of the toe-corresponding portion on the shoe sole body so that the toe concavities of the middle toe, ring toe, and little toe of the shoe wearer are seated and supported, and the length of the shoe sole body. A toe pressure reduction type shoe sole including left and right anti-slip protrusions protruding upward from the rear end of the propulsion enhancing protrusion along the direction center line to the tip of the heel response portion is presented as an embodiment.

Description

Toe pressure reducing shoe sole {SHOE SOLE REDUCES THE PRESSURE ON TOE}

The disclosed content relates to a shoe sole that constitutes the bottom of a shoe, such as an outsole, midsole, insole, and insole.

Unless otherwise indicated herein, the matters described in this identification are not prior art to the claims of this application, and are not admitted to be prior art by being described in this identification.

In general, human gait is largely divided into stance phase and swing phase.

The stance phase refers to the period when the foot is in contact with the ground, and accounts for approximately 60% of the normal gait cycle. The stance phase consists of five stages: heel strike, sole strike, mid stance phase, end stance phase, and toe off.

The first step of the stance phase, heel strike, is the movement in which the heel touches the ground. At this time, the hip joint is bent, the knee joint is straightened, and the ankle joint is in a state where the top of the foot is pulled slightly upward. And, the other foot is in the final stance state. In other words, it is a simultaneous stance phase.

The second stage of the stance phase, plantar contact, is the stage that immediately follows after the heel touches the ground. At this time, the body weight is transferred to the lower extremities placed in front. And to prevent the body weight from moving forward excessively, the knee joint is slightly bent to absorb the shock of the body weight moved forward. At the same time, the ankle joint performs a downward extension motion, and the opposite foot performs a toe-off motion.

The third stage of the stance phase, the mid-stance phase, is the period when the body's center of gravity passes through the center of the sole. At this stage, the body weight is supported on one foot, and the hip joint changes from a bent state to an extended state. At this time, the ankle joint performs the motion of pulling the instep upward, and the opposite foot performs the mid-swing motion.

At the end of the stance phase, which is the fourth stage of the stance phase, the hip and knee joints remain gradually straightened, and the ankle joint gradually straightens the top of the foot downward to prevent the body's center of gravity from moving excessively forward. At this time, the opposite foot prepares to touch the heel in the deceleration phase of the swing phase.

Toe off, the final stage of the stance phase, is when the tips of the toes come off the ground. This phase, like heel strike, is a simultaneous stance phase. At this time, the hip and knee joints gradually bend, and the ankle joint performs a motion in which the top of the foot straightens downward. Then, the opposite foot performs a plantar touch.

Additionally, the swing phase refers to the period when the foot leaves the ground and moves forward, accounting for approximately 40% of the normal gait cycle. The swing phase consists of three stages: acceleration, mid-swing, and deceleration.

Here, the accelerator, which is the first stage of the swing phase, is a movement in which the foot swings in the air after the toe drops, and the swing speed gradually increases, and the hip and knee joints perform a flexion movement. At this time, the ankle joint simply performs an action of pulling the top of the foot upward (dorsiflexion), and the opposite foot is in the early stages of mid-stance.

The second phase of the swing phase, the mid-swing phase, is the final phase of the acceleration phase and the initial phase of the deceleration phase. As the hip and knee joints pass through the body's center line, they gradually change from a bent state to an extended motion. At this time, the ankle joint maintains the state of pulling the top of the foot upward, which is in an accelerator state, and the other foot is in the final stage of the mid-stance phase.

The final stage of the swing phase, the deceleration phase, is the stage in which the heel prepares to contact the ground. At this time, the hip joint remains slightly bent, but the knee joint is fully extended, and the ankle joint remains extended upward with the top of the foot. And, the other foot is in the end-stance state.

On the other hand, when people move, they place the weight of part of their body in front of them, moving their center of gravity forward and walking. When walking or running, it is ideal to lift your legs and keep your upper body straight when placing a part of your body in front of your center of gravity. However, in general, people who walk quickly or lack strength in their lower extremities tend to stick their heads forward. When the head comes forward, the back naturally bends, which disrupts the ideal walking motion and causes musculoskeletal diseases. In particular, disorders such as plantar fasciitis occur in the muscles and muscle fibers related to walking or running.

In order to solve the above-mentioned problems, many shoe soles are designed to prevent or improve musculoskeletal diseases caused by incorrect walking posture by maintaining optimal walking posture, providing walking propulsion, reducing shock to the feet, and maximizing pressure balance. It is being developed.

As an example of such a shoe sole, Republic of Korea Patent Registration No. 10-2357936 (announced on February 7, 2022) includes an arch and base foam, a front elastic foam coupled to the upper front portion of the arch and base foam, and the front elastic foam. It is made up of a heel foam that is connected to the heel portion of the upper surface of the foam, and the front elastic foam is characterized by grooves being formed at positions corresponding to the bone joints of the foot. It is a high-performance shoe sole with a three-layer structure that provides excellent fit and walking performance. This begins.

In addition, Republic of Korea Patent Registration No. 10-2341961 (announced on December 23, 2021) discloses an outsole made of a hard material, a midsole made of a hard material forming an uneven portion bonded to the outsole, and an insole made of a soft material bonded to the upper surface of the midsole. In the insole, the front slope to which force is applied from front to back is composed of a thin thickness, and the rear slope to which force is applied horizontally from the top to the bottom is composed of a thick thickness. Propulsion and cushioning effect. A shoe sole reinforced with is disclosed.

In addition, Republic of Korea Patent Registration No. 10-18980760 (announced on October 4, 2018) discloses a sole-corresponding portion corresponding to the sole of the wearer's foot, a toe-corresponding portion formed at the tip of the sole-corresponding portion to correspond to the wearer's toes, and the sole-corresponding portion. A heel response portion formed at the rear end of the portion to correspond to the heel of the wearer's foot, a rolling action portion whose upper surface is convexly formed along a center line passing through the middle portion of the sole response portion and the heel response portion in the left and right directions, and a tip portion of the sole response portion; It includes a propulsion reinforcement portion whose upper surface is formed in a convex shape corresponding to the concave portion of the wearer between the rear ends of the toe corresponding portion, wherein the portion corresponding to the concave portion of the big toe is low and the portion corresponding to the concave portion of the little toe is low. A shoe outsole that gradually becomes higher toward is disclosed.

However, in the case of the conventional shoe sole as described above, the propulsion reinforcement portion protrudes over almost the entire width of the shoe sole, so that all toes from the big toe to the little toe are supported by the propulsion reinforcement portion, thereby increasing the propulsion force when walking. As relatively excessive pressure is concentrated on the big toe and index toe compared to the other toes, pain occurs in the big toe and index toe, and there is a problem of causing diseases such as hallux valgus or plantar fasciitis.

1. Republic of Korea Patent Registration No. 10-2357936 (announced on February 7, 2022) 2. Republic of Korea Patent Registration No. 10-2341961 (announced on December 23, 2021) 3. Republic of Korea Patent Registration No. 10-18980760 (announced on October 4, 2018)

As only the remaining toes, excluding the big toe and index toe, are supported by being caught on the propulsion reinforcement protrusion, the pressure concentrated on the big toe and index toe can be distributed when walking or running, thereby relieving pain occurring in the big toe and index toe. At the same time, we aim to provide a toe pressure-reducing sole that maximizes the balance of propulsion.

Additionally, it is not limited to the technical challenges described above, and it is obvious that other technical challenges may be derived from the description below.

The disclosed content includes a shoe sole body corresponding to the sole of the shoe wearer, a toe corresponding portion formed at the front end of the shoe sole body to correspond to the toe of the shoe wearer, and a rear end of the shoe sole body formed to correspond to the heel of the shoe wearer. A heel-responsive portion, a propulsion-reinforcing protrusion protruding upwardly from the rear end of the toe-corresponding portion on the shoe sole body so that the toe concavities of the middle toe, ring toe, and little toe of the shoe wearer are seated and supported, and the length of the shoe sole body. A toe pressure reduction type shoe sole including left and right anti-slip protrusions protruding upward from the rear end of the propulsion enhancing protrusion along the direction center line to the tip of the heel response portion is presented as an embodiment.

According to a feature of the disclosed content, the shoe sole body further includes a plurality of pairs of cushioning grooves recessed in the downward direction on both sides of the left and right slip-prevention protrusions.

According to the features of the disclosed content, the shoe sole body is one of an outsole, a midsole, an insole, and an insole.

According to the features of the disclosed content, a toe seating portion in the shape of a flat or concave portion where the big toe and index toe of the shoe wearer come into contact is formed on one side of the propulsion enhancing protrusion.

According to a feature of the disclosed content, the toe corresponding portion is formed to be inclined upward toward the front end of the shoe sole body, and the heel corresponding portion is formed to be inclined upward toward the rear end of the shoe sole body.

According to the characteristics of the disclosed content, the propulsion enhancing protrusion is formed so that the protrusion height gradually increases toward the little toe side of the shoe wearer.

According to the features of the disclosed content, the left and right anti-slip protrusions are formed in the form of linear uneven protrusions extending along the longitudinal center line of the shoe sole body.

According to the toe pressure reduction type shoe sole according to an embodiment of the disclosed content, the propulsion enhancing protrusion at the rear end of the toe corresponding portion on the shoe sole body is directed upward so that the toe concavities of the middle toe, ring toe, and little toe of the shoe wearer are seated and supported. As the protrusion is formed, the force applied to the middle toe, ring toe, and little toe when walking or running is transmitted to the ground through the sole without slipping, creating a driving force.

In addition, according to the toe pressure reducing shoe sole according to an embodiment of the disclosed content, only the remaining toes except the big toe and index toe are supported by being caught on the propulsion enhancing protrusion, and the big toe and index toe are supported by the propulsion enhancing protrusion when walking or running. As it is no longer caught, the pressure concentrated on the big toe and index toe when walking or running can be distributed to other toes, thereby relieving pain in the big toe and index toe and maximizing the balance of driving force. It has the advantage of preventing diseases such as valgus or plantar fasciitis.

In addition, according to the toe pressure reduction type shoe sole according to an embodiment of the disclosed content, the left and right anti-slip protrusions are formed to protrude upward from the rear end of the propulsion enhancing protrusion to the tip of the heel response portion along the longitudinal center line of the shoe sole body. There is also the advantage of preventing the foot from being pushed in that direction even if the force is concentrated on the left or right side based on the longitudinal center line of the shoe sole body when walking or running.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 to 3 are perspective views of a toe pressure reducing shoe sole according to an embodiment of the disclosed content.
Figure 4 is a plan view of the toe pressure reduction type shoe sole according to an embodiment of the disclosed content.
Figure 5 is a cross-sectional structural diagram taken along line A-A' of Figure 4 in a toe pressure reducing shoe sole according to an embodiment of the disclosed content.
Figure 6 is a cross-sectional structural diagram taken along line B-B' of Figure 4 in a toe pressure reducing shoe sole according to an embodiment of the disclosed content.

Hereinafter, the configuration and effects of preferred embodiments of the disclosed content will be examined with reference to the attached drawings. For reference, in the drawings below, each component is omitted or schematically shown for convenience and clarity, and the size of each component does not reflect the actual size. In addition, the same reference numerals refer to the same components throughout the specification, and reference numerals for the same components in individual drawings will be omitted.

The toe pressure reduction type shoe sole 1 according to an embodiment of the disclosed content includes a shoe sole body 10 and a toe corresponding portion 20 formed at the front end of the shoe sole body 10, as shown in FIGS. 1 to 6. and a heel corresponding portion 30 formed at the rear end of the shoe sole body 10, and a propulsion reinforcement protrusion 40 formed upwardly at the rear end of the toe corresponding portion 20 on the sole body 10. , It includes left and right anti-slip protrusions 50 that protrude upwardly along the longitudinal center line of the shoe sole body 10.

Here, the shoe sole body 10 constitutes the bottom of the shoe, for example, the outsole as shown in FIG. 1, the midsole as shown in FIG. 2, and the insole or insole shown in FIG. 3. It has a shape that corresponds to the sole of the shoe wearer's foot to support the load.

Typically, the outsole is the part of the shoe sole that contacts the ground and receives direct impact from the ground, and requires cushioning function, lightness, and wear resistance. For example, natural rubber, synthetic rubber, foamed vulcanized rubber, foamed EVA, polyester. It is manufactured from materials such as urethane.

The midsole corresponds to the midsole attached to the upper surface of the outsole, and requires anti-torsion and cushioning functions for the shoe, and is manufactured from materials such as EVA sponge, pylon, and polyurethane.

The insole is the part of the insole that is attached to the upper surface of the midsole and comes into contact with the sole of the shoe wearer. It requires sole protection and is made of materials such as latex foam, EVA sponge, and polyurethane. Additionally, the insole is inserted into the upper and fitted on the upper surface of the insole to reinforce the role of the insole. For example, the insole is made of materials such as latex foam, EVA sponge, and polyurethane.

At the tip of the shoe sole body 10 described above, a toe corresponding portion 20 is formed to correspond to the toes of the shoe wearer. It is preferable that the toe corresponding portion 20 is formed low at a portion corresponding to the big toe and gradually inclined upward toward the portion corresponding to the little toe so that the lower surfaces of all toes of the shoe wearer can be seated and closely supported.

The shape of this toe corresponding portion 20 allows the wearer's big toe, index toe, middle toe, ring toe, and little toe to all adhere to the toe corresponding portion 20 with equal force when walking or running. Not only the propulsion force applied to the corresponding part, but also the force applied to the corresponding part of the index toe, middle toe, ring toe, and little toe can all be used as propulsion force, resulting in a powerful and fast performance through an increase in propulsion force. It makes walking and running possible and at the same time reduces physical strength consumption of the shoe wearer.

In addition, the toe response portion 20 is formed to be inclined upwardly toward the front, thereby preventing the shoe wearer's feet from being tilted toward the front of the shoe when walking or running, thereby preventing the phenomenon of pressure being applied to the toes by the shoe upper. To prevent.

At the rear end of the above-described shoe sole body 10, a heel response portion 30 is formed to correspond to the heel of the foot of the shoe wearer. The heel response portion 30 is formed to be inclined upwardly toward the rear, thereby preventing the shoe wearer's feet from being tilted forward against the shoe when walking or running, and at the same time, when force is applied by the shoe wearer, the heel response portion 30 is inclined upwardly toward the rear. It deforms elastically and acts as a buffer, and when the shoe wearer's strength disappears, it elastically restores upward and lifts the shoe wearer's foot, thereby assisting the shoe wearer's step-off motion.

On the above-described shoe sole body 10, a propulsion enhancing protrusion 40 is formed at the rear end of the toe corresponding portion 20. The propulsion reinforcement protrusion 40 is not formed on the part corresponding to the big toe and index toe of the shoe wearer, where force is concentrated when walking or running, while the toe concave portion of the middle toe, ring toe, and little toe of the shoe wearer is seated. It is formed to protrude upward in a portion corresponding to the toe concavity of the middle toe, ring toe, and little toe of the shoe wearer so as to be supported.

The propulsion enhancing protrusion 40 gradually increases in protrusion height from the part corresponding to the toe concave of the middle toe of the shoe wearer to the part corresponding to the toe concave of the shoe wearer's little toe so as to correspond to the shape of the toe concave of the shoe wearer. At the same time as it is formed higher, it is formed to curve backwards and extend in a form where the front and rear widths become narrower. Due to the shape of the propulsion enhancing protrusion 40, the toe concavities of the middle toe, ring toe, and little toe are configured to be in close contact with the propulsion enhancing protrusion 40.

Accordingly, when walking or running, the shoe wearer's middle toe, ring toe, and little toe are caught by the propulsion enhancing protrusion 40 and are supported to prevent backward slipping, thereby increasing the propulsion force, while the shoe wearer's big toe and index toe are As the shoes are not supported by the propulsion reinforcement protrusion 40, the force concentrated on the big toe and index toe of the shoe wearer is distributed to the other toes, thereby relieving pain.

To support the big toe and index toe of the shoe wearer, a toe seating portion 41 in the shape of a flat or concave portion where the big toe and index toe of the shoe wearer come into contact is provided on one side of the propulsion reinforcement protrusion 40 on the shoe sole body 10. is formed

In addition, as shown in FIGS. 4 and 5, along the longitudinal center line of the above-described shoe sole body 10, left and right anti-slip protrusions 50 are located from the rear end of the propulsion reinforcement protrusion 40 to the front end of the heel response portion 30. It protrudes upward toward the top.

The left and right anti-slip protrusions (50) induce the shoe wearer's feet to roll relative to the shoe sole body (10) when force is concentrated on one side or the other side based on the longitudinal center line of the shoe sole body (10) during walking or running. This prevents the shoe from being pushed to one side or the other, and can be formed in the form of a linear protrusion extending along the longitudinal center line of the shoe sole body, especially a linear uneven protrusion.

In addition, as shown in FIG. 4, a plurality of pairs of buffer grooves 60 are formed downwardly on both sides of the left and right anti-slip protrusions 50 on the shoe sole body 10 described above.

This buffer groove 60 induces elastic deformation of the shoe sole body 10 when the shoe wearer's force is applied to the shoe sole body 10 and the heel response portion 30 as he or she walks or runs, and the force exerted by the shoe wearer disappears. When this occurs, the process of inducing elastic recovery of the shoe sole body 10 is repeated, thereby minimizing the impact transmitted from the ground to the shoe wearer's feet.

The cushioning grooves 60 are shown in FIG. 4 as being formed in five pairs on both sides of the left and right slip-prevention protrusions 50 on the shoe sole body 10, but are not limited to this and are formed along the length of the shoe sole body 10 or the cushioning grooves. It can be increased or decreased depending on the individual area of (60).

In the case of the toe pressure reduction type shoe sole (1) according to an embodiment of the disclosed content, the propulsion enhancing protrusion (40) is provided at the rear end of the toe corresponding portion (20) on the shoe sole body (10) to support the middle toe and ring finger of the shoe wearer. As the toe concave portions of the toes and little toes protrude upward to support seating, the force applied to the middle toe, ring toe, and little toe when walking or running is transmitted to the ground through the sole body 10 without slipping. Propulsion force can be increased.

In addition, in the case of the toe pressure reduction type shoe sole 1 according to an embodiment of the disclosed content, as shown in FIG. 6, only the remaining toes except the big toe and index toe are on the propulsion enhancing protrusion 40 when walking or running. Since the big toe and index toe are supported by being caught and are not caught by the propulsion reinforcement protrusion 40, the pressure concentrated on the big toe and index toe when walking or running can be distributed to other toes, so that the big toe and index toe At the same time that pain occurring in the joints is relieved, the balance of driving force can be maximized, and diseases such as hallux valgus and plantar fasciitis can be prevented.

In addition, in the case of the toe pressure reduction type shoe sole 1 according to an embodiment of the disclosed content, left and right anti-slip protrusions 50 are formed along the longitudinal center line of the sole body 10, as shown in FIGS. 4 and 5. As the propulsion reinforcement protrusion 40 protrudes upward from the rear end to the tip of the heel response portion 30, a force is applied to the left or right side based on the longitudinal center line of the sole body 10 when walking or running. Even if it is biased, the phenomenon of feet being pushed in that direction can be prevented.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the embodiments described in this specification and the configuration shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention. Since this is not the case, it should be understood that there may be various equivalents and modifications that can replace them at the time of filing this application. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the claims described later rather than the detailed description, and the meaning and scope of the claims and their All changes or modified forms derived from the equivalent concept should be construed as falling within the scope of the present invention.

1: Toe pressure reducing sole
10: Shoe sole body
20: Toe corresponding part
30: Heel response part
40: Propulsion reinforcement protrusion
41: Toe seating area
50: Left and right anti-sliding protrusions
60: buffer groove

Claims (7)

A shoe sole body corresponding to the sole of the shoe wearer's foot;
A toe corresponding portion formed at the front end of the shoe sole body to correspond to the toes of the shoe wearer;
a heel corresponding portion formed at the rear end of the shoe sole body to correspond to the heel of the foot of the shoe wearer;
A thrust reinforcing protrusion formed on the shoe sole body to protrude upwardly at the rear end of the toe corresponding portion so that the toe concavities of the middle toe, ring toe, and little toe of the shoe wearer are seated and supported; and
A toe pressure-reducing type shoe sole including left and right anti-slip protrusions protruding upward from the rear end of the propulsion enhancing protrusion to the front end of the heel response portion along the longitudinal center line of the sole body. In claim 1,
A toe pressure-reducing type shoe sole further comprising a plurality of pairs of cushioning grooves recessed in the downward direction on both sides of the shoe sole body with respect to the left and right slip-prevention protrusions. In claim 1 or claim 2,
A toe pressure-reducing shoe sole, characterized in that the sole body is one of an outsole, a midsole, and an insole. In claim 1 or claim 2,
A toe pressure-reducing shoe sole, characterized in that a toe seating portion in the shape of a flat or concave portion where the big toe and index toe of the shoe wearer come into contact is formed on one side of the propulsion enhancing protrusion. In claim 1 or claim 2,
A toe pressure reduction type shoe sole, wherein the toe corresponding portion is formed to be inclined upward toward the front end of the shoe sole body, and the heel corresponding portion is formed to be inclined upward toward the rear end of the shoe sole body. In claim 1 or claim 2,
The propulsion-enhancing protrusion is a toe pressure-reducing shoe sole, characterized in that the protrusion height gradually increases toward the little toe of the shoe wearer. In claim 1 or claim 2,
A toe pressure reducing shoe sole, wherein the left and right anti-slip protrusions are formed in the form of linear uneven protrusions extending along the longitudinal center line of the shoe sole body.

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